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Accelerometer

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702 - Data processing: measuring, calibrating, or testing

702127000 - MEASUREMENT SYSTEM

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DocumentTitleDate
20130030754METHOD AND APPARATUS FOR DETERMINING ATTITUDE OF AN OBJECT - A method and apparatus for determining the attitude of an object is provided herein. The method for determining the attitude of the object comprises: receiving a gravity acceleration signal and a geomagnetic field signal, the gravity acceleration signal and the geomagnetic field signal changing with the attitude of the object accordingly; determining a gravity field representation in an object coordinate system according to the gravity acceleration signal, and determining a geomagnetic field representation in the object coordinate system according to the geomagnetic field signal; calculating a conversion parameter of coordinate system between to the object coordinate system and a terrestrial coordinate system according to the gravity field representation and the geomagnetic field representation in the object coordinate system; and determining the attitude of the object according to the conversion parameter of coordinate system.01-31-2013
20090093992Pedometer - The invention relates to a method for measuring the number of steps of an animal moving on four legs, according to which an acceleration sensor (04-09-2009
20110295547BODY MOTION DETECTION DEVICE - The invention improves a degree of freedom of a usage mode and improves measurement accuracy. An exercise amount meter main body including an acceleration detection unit for detecting acceleration, and a calculation unit for executing a body motion calculating process for calculating body motion of a living body based on acceleration data, further includes an attachment/detachment guide for allowing a belt type attachment body and a clip type attachment body to be attached or detached, wherein the calculation unit executes an attachment/detachment detection process for detecting attachment or detachment from the change in acceleration that appears in the acceleration data when attaching or detaching the belt type attachment body or the clip type attachment body to or from the attachment/detachment guide, and executes the body motion calculating process based on the detected attachment/detachment while switching to a mode complying with a state after the attachment/detachment.12-01-2011
20110202305Monitoring Aggressive Driving Operation of a Mobile Asset - The acceleration of a mobile asset is sensed and compared to threshold acceleration levels when the speed of the mobile asset is above a threshold speed. When the acceleration exceeds a threshold a report is created allowing aggressive driving behavior to be logged.08-18-2011
20110202304MOTION STATE DETECTION METHOD AND MOTION STATE DETECTOR - A motion state detection method which uses a pair of electrodes, facing each other to fix mutual positional relationship, and a movable spherical conductor disposed between the pair of electrodes, putting the pair of electrodes into either a conduction state or a non-conduction state, includes: defining a plurality of level values determined by the proportion of a duration of the conduction state in a unit time period and calculating a level value in the unit time period among the plurality of level values as a first level value; adding a second predetermined value to the first level value to calculate a second level value; and calculating the sum of squares of a plurality of first level values in a plurality of consecutive unit time periods as a first detection value and calculating the sum of squares of a plurality of second level values as a second detection value.08-18-2011
20110202303Method for determining loads in clothes washing machines - The present invention refers to a method for determining loads in clothes washing machines which comprises the following steps: method for measuring loads in clothes washing machines, characterized by comprising the following steps: (E1) Acceleration of the mobile assembly of the washing machine until the mobile assembly reaches a low rotation speed; (E2) Acceleration of the mobile assembly until the mobile assembly reaches a medium rotation speed faster than the speed in the first step (E1); (E3) Deceleration, whereby the engine which turns the mobile assembly is shutdown; (E4) Acceleration of the mobile assembly and measurement of the engine current, whereby the speed of the engine which turns the mobile assembly is increased up to a pre-determined rotation speed limit; (E5) Measurement, whereby parameters regarding the engine are measured; (E6) Shutdown of the engine and measurement of the deceleration time, whereby the said engine is turned off and turns via inertia, with the time spent from the shutdown until a pre-determined minimum speed limit is reached, being measured; (E7) Repetition, whereby the forth (E4), fifth (E5) and sixth (E6) steps are repeated at least once before the performance of the eighth step (E8); (E8) Calculation of the average of each one of the parameters measured in the fourth, fifth, sixth and seventh steps; and (E9); Obtainment of clothes load value based on the values obtained by the eighth step (E8) through the application of a neural network or from an empirical equation.08-18-2011
20130085713SIGNATURE-BASED TRICK DETERMINATION SYSTEMS AND METHODS FOR SKATEBOARDING AND OTHER ACTIVITIES OF MOTION - The invention provides improved devices, systems and methods for skateboarding (and other sporting activities) that monitor motion of a skateboard to identify tricks performed on it by a user. A system according to one aspect of the invention includes (i) a sensing device that is attached (or otherwise coupled) to the skateboard and that measures a physical characteristic of it, and (ii) a data processor that identifies the feat or trick (or other action) performed by or on the skateboard based, at least in part, on correspondence between physical characteristics of motion and/or of the environment measured by the sensing device(s) and a unique signature associated with each of one or more possible tricks.04-04-2013
20130085712INERTIAL SENSING INPUT APPARATUS AND METHOD THEREOF - An inertial sensing input apparatus includes a motion sensing module, a state determination module, an attitude estimation module, a coordinate transformation module, a gravity elimination module, an integral operation module, a data storage module, a trajectory modification module and a trajectory removal module. When the inertial sensing input apparatus is in a moving time period, the coordinate transformation module transforms a relative acceleration measured by the motion sensing module to an absolute acceleration based on a rotational attitude estimated by the attitude estimation module. The integral operation module calculates a velocity and a displacement based on an absolute acceleration revised by the gravity elimination module and forwards them to the data storage module. When the K04-04-2013
20130085711TECHNIQUES FOR IMPROVED PEDOMETER READINGS - Techniques are provided for improving pedometer readings. In some embodiments, motion data, such as acceleration data is detected, and a magnitude of the acceleration data, referred to as the modulus, is processed for improved step detection. Techniques involve computing a moving average of the modulus and applying an acceleration threshold filter to the modulus. Crossings are detected based on peak-to-peak swing of the modulus about the moving average. In some embodiments, the frequency of the modulus is used in an adaptive filtering technique. based on the dominant frequency of the modulus, a frequency band is selected to filter to modulus. The frequency band may be dynamically changed to one of several frequency bands when a significant frequency change is detected in the dominant frequency of the modulus. In some embodiments, steps are detected based on the acceleration threshold-filtered and the frequency-filtered modulus.04-04-2013
20130085710METHOD FOR DETECTING WHEEL ROTATION USING A ONE-DIMENSIONAL ACCELERATION SENSOR - Embodiments relate to TPMS utilizing a single-axis acceleration sensor for measuring the direction of rotation of the tires in a tire localization methodology. In an embodiment, the known axis position of the acceleration sensor in the tires allows for the assessment by an integrated circuit in order to determine the left or right positioning of a tire, as well as the magnitude of acceleration or deceleration. Because of the dual components of the measured acceleration signal of first, the directional acceleration of the vehicle and second, the oscillating modulation due to gravity, the generated waveform is known to have differences between the left and right tire signals of an accelerating and decelerating vehicle. The impact of the oscillating modulation on the directional acceleration of the vehicle can be utilized to identify tire rotation direction, and thus the wheels localized therefrom, as well as the magnitude of acceleration and deceleration.04-04-2013
20130035893METHODS, DEVICES, AND APPARATUSES FOR ACTIVITY CLASSIFICATION USING TEMPORAL SCALING OF TIME-REFERENCED FEATURES - Components, methods, and apparatuses are provided that may be used to obtain a plurality of time-referenced features extracted from signals received from one or more inertial sensors of a mobile device, wherein the time-referenced features are provided according to heterogeneous time scales. The time-referenced features are combined over a decision window to infer an activity of a user co-located with the mobile device.02-07-2013
20130041619ELECTRONIC DEVICE AND MOTION STATE JUDGMENT METHOD - An electronic device includes: a sensor that detects a triaxial direction acceleration; and a processor operable to calculate axial components in the triaxial directions of a gravitational acceleration from detection values of the sensor, to determine a ratio of a magnitude of the gravitational acceleration with respect to the axial components of an axial direction of the triaxial directions, to determine a vertical acceleration magnitude according to the ratio and the detection values of the sensor in the axial direction, and to judge whether or not a motion state is a running state according to the vertical acceleration magnitude.02-14-2013
20130041618ESTIMATION OF AN INITIAL CONDITION INERTIAL REFERENCE FRAME - In one embodiment, an inertial device for determining an initial condition reference frame for a body is provided. The inertial device comprises at least one inertial measurement unit, one or more processing devices, and one or more memory devices. The inertial measurement unit provides rotation information along at least one axis to the one or more processing devices. The one or more processing devices uses the rotation information to estimate the current attitude of the body, based on estimates of a total rotation angle from experienced by the body from the beginning of body motion to when the inertial measurement unit initialized.02-14-2013
20100042359PORTABLE ELECTRONIC APPARATUS, OPERATION CONTROL METHOD, OPERATION CONTROL PROGRAM, SIGNAL GENERATION APPARATUS AND SIGNAL GENERATION METHOD - A portable electronic apparatus includes an acceleration detection unit, an evaluation-signal generation unit, and a control unit. The acceleration detection unit is configured to detect an acceleration generated in the portable electronic apparatus. The evaluation-signal generation unit is configured to carry out a predetermined process based on the acceleration detected by the acceleration detection unit in order to generate an evaluation signal representing the amplitude and positive or negative polarity of the acceleration. The control unit is configured to produce a result of determination as to whether or not the portable electronic apparatus has been driven to make a predetermined movement on the basis of the evaluation signal and carrying out a predetermined operation on the basis of the result of determination.02-18-2010
20100042357Manipulator Position Sensor System - A system and method for determining a position of an articulated member with respect to a predetermined plane comprise a multi-axis accelerometer mounted to a first movable member of an articulated set of members. The multi-axis accelerometer produces a sinusoidal signal in proportion to a position of the member with respect to a predetermined set of axes of a predetermined plane. An motion controller operatively in communication with the multi-axis accelerometer determines the angle of inclination as the arctangent of two readings obtained from the accelerometer.02-18-2010
20120185205 METHOD OF DETECTING PARASITIC MOVEMENTS WHILE ALIGNING AN INERTIAL UNIT - A method of detecting parasitic movements while aligning an inertial unit comprising a navigation unit connected to accelerometer sensors and gyros disposed in a predetermined frame of reference, the method comprising the steps of: integrating the acceleration signal in a frame of reference that is turning in accordance with the measurement of the gyros so as to obtain a raw position signal during a predetermined duration; during this predetermined duration recording the previously calculated position signals; from an error model, determining the parameters for modeling the raw position signal; calculating a residual signal between the modeling signal and the raw position signal; and identifying a parasitic movement when the residual signal overshoots a predetermined limit threshold.07-19-2012
20120185204METHOD FOR ESTIMATING THE DIRECTION OF A MOVING SOLID - The invention relates to a method for estimating the orientation in an inertial reference frame of a solid in motion equipped with an accelerometer and a magnetometer which are mounted on said solid.07-19-2012
20120185203INFORMATION PROCESSING APPARATUS AND METHOD FOR CONTROLLING THE SAME - An information processing apparatus capable of preventing unintentional vibration from being erroneously recognized as vibration caused by a tapping operation is provided. The information processing apparatus detects acceleration caused by vibration applied thereto, determines whether the amplitude of acceleration data detected by the acceleration sensor is greater than or equal to a threshold, analyzes a frequency of the acceleration data when the amplitude is greater than or equal to the threshold, and executes processing assigned to the tapping operation when the frequency analysis result indicates the tapping operation.07-19-2012
20090171616Motion detector module - In a data acquisition system a sensor module includes a motion sensor and a communication controller. The motion sensor and communication controller are prepared in a form factor adapted to be received within, or otherwise readily used with, the user appliance. A data signal produced by the motion sensor is adaptable for compliance validation.07-02-2009
20130046505METHODS AND APPARATUSES FOR USE IN CLASSIFYING A MOTION STATE OF A MOBILE DEVICE - Methods and apparatuses are provided that may be implemented in a mobile device to establish an orientation invariant reference frame based, at least in part, on measurement values from a three-dimensional accelerometer fixed to the mobile device; transform subsequent inertial sensor measurements to the reference frame; and classify a motion state of the mobile device relative to the reference frame based, at least in part, on the transformed inertial sensor measurements.02-21-2013
20110004436IDENTIFYING MOBILE DEVICES - A method of identifying mobile devices (01-06-2011
20100268508SYSTEM AND METHOD FOR MEASURING TILT USING LOWEST DEGREES OF FREEDOM OF ACCELEROMETER - Systems and methods are provided for calculating the tilt of an object from a minimum set of measurements. In the described embodiments, one or more accelerometers are used to sense tilt in fewer degrees of freedom than would otherwise be required in a conventional measurement apparatus. In one embodiment, a single axis accelerometer measures 2D tilt by taking into account a constant value of the earth's gravitational field in a direction generally perpendicular to the earth.10-21-2010
20110172951METHODS FOR PROCESSING MEASUREMENTS FROM AN ACCELEROMETER - There is provided a method for estimating the orientation of an accelerometer relative to a fixed reference frame, the method comprising obtaining signals from the accelerometer, the signals indicating the components of the acceleration acting on the accelerometer along three orthogonal axes; identifying the axis with the highest component of acceleration; and determining the orientation of the accelerometer by determining the angle between the acceleration acting on the accelerometer and the axis with the highest component of acceleration. There is further provided a method for estimating the vertical acceleration in the fixed reference frame using the estimated orientation.07-14-2011
20120191405Athletic Performance Monitoring Systems and Methods in a Team Sports Environment - Systems and methods for sensing and monitoring various athletic performance metrics, e.g., during the course of a game, a practice, a training session, training drills, and the like, are described. These systems and methods can provide useful metrics for players and coaches relating to athletic performances in various sports, including various team sports.07-26-2012
20090093991SYSTEM AND METHOD FOR DETECTION OF SPUN VEHICLE - A system, method and computer program product is provided for detecting if a vehicle has spun. A normal force and a lateral force of each of a front and rear axle of a vehicle is estimated. A coefficient of friction representative of a surface is estimated. Lateral momenta of the front and rear axles based on the coefficient of friction and the normal and lateral forces is calculated. Whether a surplus momentum is present, is determined. If the surplus momentum is present, a yaw rate of the vehicle is integrated respect to time to obtain a vehicle rotation estimation.04-09-2009
20130073249SYSTEM AND METHOD FOR REAL-TIME DETERMINATION OF A REPETITIVE MOVEMENT PARAMETER - The invention pertains to a system for real-time determination of a parameter of a movement (PM, T03-21-2013
20130073248APPARATUS AND METHOD FOR EMPLOYING MINIATURE INERTIAL MEASUREMENT UNITS FOR DEDUCING FORCES AND MOMENTS ON BODIES - An apparatus for analyzing movement of equipment. The apparatus includes an inertial measurement unit continuously measuring six rigid body degrees of freedom of the equipment and outputting data representative thereof, wherein the inertial measurement unit defines a planar substrate having a single common plane. The inertial measurement unit further includes at least one angular rate gyro and at least one accelerometer sufficient to measure the six rigid body degrees of freedom and each being mounted on the single common plane. The apparatus further includes a processing unit determining the acceleration of the mass center of the equipment, the angular velocity and the angular acceleration of the equipment through a single derivative operation.03-21-2013
20130073247APPARATUS AND METHOD FOR IDENTIFYING AND ANALYZING THE FREE FLIGHT DYNAMICS OF A BODY - An apparatus for analyzing free flight of a body including an inertial measurement unit having at least one accelerometer continuously measuring three orthogonal axes of acceleration and outputting data representative thereof and a processing unit operably receiving the data and determining three components of an angular velocity of the body during free flight.03-21-2013
20110015892METHOD AND APPARATUS FOR DECIDE TRAVEL CONDITION USING SENSOR - A method and apparatus of determining a stationary state and a driving state of a moving object using a sensor are provided. The method of determining a driving state using a sensor includes: calculating an amount of change ΔP in a sensor output signal of the sensor wherein the sensor detects a vibration of a moving object; and comparing the calculated amount of change ΔP in the sensor output signal with a predetermined set range of the sensor output signal and determining whether the moving object is in a stationary state or in a driving state.01-20-2011
20130060515PORTABLE DEVICE AND ORIENTATION DETECTION METHOD THEREFOR - An embodiment of the invention provides an orientation detection method for a portable device. The method comprises acquiring an accelerometer data, determining whether the portable device is in a flat status, determining whether the portable device is in a stable status, and when the portable device is determined in both the flat status and the stable status, stopping acquiring the accelerometer data until receiving an enable signal.03-07-2013
20130060514MEMS ACCELEROMETER AIRLINER TAKEOFF AND LANDING DETECTION - Identifying an airliner motion event at a mobile device may utilize, for example, one or more accelerometers, an acceleration feature extractor, and a motion event identification processor. The one or more accelerometers may be configured to output calibrated triaxial accelerometer data. The acceleration feature extractor may be configured to determine scalar acceleration signals from the calibrated triaxial accelerometer data, to filter the scalar acceleration signals to reduce high frequency noise, and to process the filtered scalar acceleration signals to generate an acceleration spread waveform. The motion event identification processor may be configured to compare the acceleration spread waveform to one or more predetermined patterns characteristic of an airliner motion event, and to identify an airliner motion event based on whether the comparing results in a substantial match.03-07-2013
20130060513Systems and Methods for Utilizing Acceleration Event Signatures - Systems and methods are described for utilizing acceleration event signatures. One method for utilizing acceleration event signatures in an electronic device comprises receiving, by the electronic device, one or more acceleration events. The method further comprises determining whether the received one or more acceleration events correspond to one or more predefined signature definitions and invoking one or more functions based on the one or more acceleration events.03-07-2013
20130060512CALCULATION OF MINIMUM GROUND CLEARANCE USING BODY WORN SENSORS - Methods, systems, and apparatus for deriving a relationship between minimum ground clearance (MGC) and inertial sensor data. A regression model may be generated by collecting tri-axial angular velocity and acceleration data from inertial sensors and MGC data from optical motion capture systems during a walking trial. A linear, quadratic, interaction, stepwise interaction, or another regression model may be generated. The regression model may estimate the MGC as a function of one or more parameters measured by or derived from the inertial sensor data. The regression model may be used to calculate an estimate of the MGC based on inertial sensor data collected from one or more individuals.03-07-2013
20130066586INPUT DEVICE, COMPUTER-READABLE STORAGE MEDIUM HAVING INPUT PROCESSING PROGRAM STORED THEREIN, INPUT PROCESSING METHOD, AND INPUT PROCESSING SYSTEM - An exemplary input device detects a first detected attitude thereof based on angular velocity data outputted from an angular velocity sensor. Next, the input device corrects the first detected attitude based on acceleration data outputted from an acceleration sensor. Then, the input device performs predetermined information processing, without using components, in a horizontal direction and a depth direction, of the first detected attitude which has been corrected.03-14-2013
20110022349METHOD AND APPARATUS FOR ESTIMATING A MOTION PARAMETER - A system for estimating motion parameters corresponding to a user. The system may generally include a receiver operable to receive a signal from an external source, an inertial sensor operable to be coupled with the user and arbitrarily oriented relative to the direction of user motion for generation of a signal corresponding to user motion, and a processing system in communication with the receiver and inertial sensor. The processing system can be operable to utilize the receiver signal to estimate a first parameter corresponding to a first motion parameter type, utilize the inertial sensor signal to estimate a second parameter corresponding to a second motion parameter type, generate a user-specific motion model to correlate the first parameter type and second parameter type using at least the first and second estimated parameters, utilize the inertial sensor signal to estimate a third parameter corresponding to the second parameter type, and utilize the motion model and the third parameter to estimate a fourth parameter corresponding to the first parameter type independent of the receiver signal.01-27-2011
20110022348METHOD AND APPARATUS FOR DECIDE VERTICAL TRAVEL CONDITION USING SENSOR - A method and apparatus for determining a vertical driving state using a sensor which determines the driving state according to a gravity change of a moving object by using an acceleration sensor are provided. The method of determining a driving state using a sensor includes: reading a sensor output signal according to a gravity value of a moving object while being driven, from a sensor which senses a gravity value of the moving object with respect to a direction of gravity; and determining whether the moving object is in a level driving state or inclining/declining-slope driving state by comparing the read sensor output signal with a predetermined reference range.01-27-2011
20090234614EYEWEAR HAVING HUMAN ACTIVITY MONITORING DEVICE - A method for monitoring human activity using an inertial sensor includes obtaining acceleration measurement data from an inertial sensor disposed in eyewear. The acceleration measurement data is processed to determine a user activity statistic. The user activity statistic includes at least one of a current user activity, periodic human motion count, total distance traveled, vertical distance traveled, current speed and average speed.09-17-2009
20120271589INFORMATION PROCESSING APPARATUS AND METHOD - According to one embodiment, an information processing apparatus extracts utterance information of at least one user who utilizes a network community from a server. The information processing apparatus includes a measurement unit, an estimation unit, an extraction unit, and a display unit. The measurement unit is configured to measure a present location and an acceleration representing a rate of a specific user's move. The estimation unit is configured to estimate a moving status of the specific user based on the acceleration, and to estimate a line information which the specific user is presently utilizing or will utilize based on the present location and the moving status. The extraction unit is configured to extract at least one utterance information related to the line information from the server. The display unit is configured to display the utterance information extracted.10-25-2012
20130166246Sensor-assisted Improvement of Timing-Based Positioning Accuracy - There are provided measures for enabling a sensor-assisted improvement of timing-based positioning accuracy. Such measures may exemplarily include measuring a first timing value for timing-based positioning calculation on the basis of a first positioning-related signal at a first time, measuring a second timing value for timing-based positioning calculation on the basis of a second positioning-related signal at a second time, deriving movement information indicative of a movement of an apparatus to be positioned during a time interval from the first time to the second time, and utilizing the measured first timing value, the measured second timing value and the derived movement information for timing-based positioning calculation relating to the apparatus to be positioned at a network side.06-27-2013
20130166247INFORMATION PROCESSING APPARATUS AND INFORMATION PROCESSING METHOD - A process of the invention analyzes a moving speed using acceleration data by an acceleration sensor and calculates a moving distance of the object. The process removes each of given candidate values of drift components from angular velocity data by a gyro sensor and generates relative azimuths data pieces. Based on the respective relative azimuths data pieces, the process calculates moving directions of the object. Using the moving distance and moving directions calculated, the process creates plural moving loci corresponding to the candidate values of drift components. By comparing the positions of actual starting and end points of moving in a building with the positions of starting and end points of each moving locus, the process evaluates the moving loci and determines an optimal moving locus out of the moving loci, based on the evaluation result.06-27-2013
20100042358MOTION PLANE CORRECTION FOR MEMS-BASED INPUT DEVICES - An electronic motion-based input device and method for correcting errors in acceleration due to a deviation from a horizontal plane of motion by correcting for gravitational acceleration components due to the deviation in the plane of motion.02-18-2010
20120116709DISPLAY-INTEGRATED OPTICAL ACCELEROMETER - An optical accelerometer and method of determining an acceleration are disclosed. In one aspect, an accelerometer includes a light source, a substrate, a light guide attached to a first side of the substrate and configured to redirect light from the light source through the substrate. The accelerometer also includes a light detector, a proof mass attached to a second side of the substrate via one or more springs, wherein the second side is opposite the first side and wherein motion of the proof mass alters a characteristic of the light from the light source reaching the light detector, and a processor configured to determine an acceleration based on the characteristic of the light reaching the light detector.05-10-2012
20110046913SYNTHETIC VIBRATION ISOLATION SYSTEM FOR FREEFALL GRAVIMETER - A gravimeter is disclosed that comprises a base, a reference device coupled to the base and configured to move along a first axis, a falling device configured to free fall from a first position to a second position on a second axis that is parallel to the first axis, a measurement module coupled to the reference device and configured to provide a first signal of the displacement of the reference device relative to the base and provide a second signal of the displacement of the falling device relative to the reference device. A processing unit accepts the first and second signals and computes a displacement of the falling device in inertial space by processing the first and second signals and subtracting the processed first signal from the processed second signal.02-24-2011
20110282620TRAVELING STATE DETERMINING DEVICE, METHOD FOR DETERMINING TRAVELING STATE AND RECORDING MEDIUM - Disclosed is a traveling state determining device including an acceleration sensor which detects an acceleration, a cycle comparing unit which compares a varying cycle of an acceleration of a vertical direction component in an output of the acceleration sensor to a varying cycle of an acceleration of a horizontal direction component and a state determining unit which determines between a state where a user is walking or running by wearing or retaining the traveling state determining device on a body of the user and a state where the user is walking or running by holding the traveling state determining device in a hand of the user based on the comparing result of the cycle comparing unit.11-17-2011
20110066397MULTIPLE ACCELEROMETER APPARATUS FOR COUNTING ROTATIONS OF AN OBJECT, AND METHODS OF USE - A system determines the revolutions of an object using multiple accelerometers. A difference vector between at least 2 multi-axis accelerometers spaced some distance apart is used to calculate the two-dimensional or three-dimensional centripetal acceleration vector. The centripetal acceleration vector is then used as a rough estimate for the sampling rate for a digital tracking bandpass filter. This bandpass filter extracts angular orientation data leading to a sampling rate and to a revolution totalizer. The number of revolutions of the object, along with a known diameter of an attached object, such as a vehicle wheel, may be used to calculate distance traveled by the object.03-17-2011
20100161271TECHNIQUES FOR DETERMINING ORIENTATION OF A THREE-AXIS ACCELEROMETER - A method, apparatus, and article containing computer instructions are described. Embodiments may use accelerometer data regarding forward motion by a wearer of a three-axis on-body accelerometer. Embodiments may further measure an acceleration due to gravity on each axis x, y, z of the accelerometer and use the direction of gravity to associate or align the x axis of the accelerometer with gravity. Embodiments may then use the acceleration not due to gravity to identify the forward motion and associate or align the forward direction with the y axis. The remaining direction may be identified as the sideways direction, which may be associated or aligned with the z axis. Additional activities may then be performed using the now-known orientation of the accelerometer. Other embodiments are described and claimed.06-24-2010
20090204361TIRE ROTATION DETECTION SYSTEM AND METHOD - A method for determining whether a tire is in rotation is provided. A measured acceleration is compared to a first threshold after a first timer indicates that a first period has lapsed, and indication that the tire is in rotation is provided if at least one of the measured accelerations is greater than the first threshold. If an absolute difference between consecutive measured accelerations is greater than a second threshold, an indication that the tire is in rotation is also provided. Additionally, the second timer is started if the absolute difference is greater than the second threshold and if a second timer is not running, and indication that the tire is rotating is provided if the absolute difference is less than a predetermined threshold and if the second timer is running.08-13-2009
20110288812Apparatus and Method for Geometric Measurement - An non-contacting measurement apparatus for measuring distances, angles and related geometric quantities, and for computing other quantities based on the measurements, is provided. A visible light beam allows a user to point the device at one or more points to which the distance is measured, and angular rotation between the various points of interest can be recorded. Then, geometric and trigonometric relationships are used to compute and display lengths, areas, volumes or other facts derived from the measurements. Various input and output features are provided in the present embodiments.11-24-2011
20110288811WIRELESS SENSOR BASED QUANTITATIVE FALLS RISK ASSESSMENT - Methods and systems may provide for a plurality of kinematic sensors to be coupled to a corresponding plurality of shanks of an individual, a processor, and a memory to store a set of instructions. If executed by the processor, the instructions can cause the system to calculate a timed up and go (TUG) time segment based on angular velocity data from the plurality of kinematic sensors. The instructions may also cause the system to calculate a derived parameter based on the angular velocity data, and generate a falls risk assessment based on at least one of the TUG time segment and the derived parameter.11-24-2011
20080208516Cycle and Load Measurement Device - The present application relates to a sensing system for an medical device, the sensing system having at least one sensor for measuring movement of the medical device and a recording device for storing movement data from the at least one sensor. The application also relates to a method for evaluating a patient' s compliance with a healing regimen, the patient provided with a medical device, the method having the steps of a) collecting movement data relating to movement of a sensing system affixed within, to, or near the medical device; b) retrieving the movement data from the sensing system; and c) analyzing the movement data and comparing the movement data to standard movement data to evaluate the patient's compliance with the healing regimen.08-28-2008
20110218758MOVEMENT MONITORING SYSTEMS AND ASSOCIATED METHODS - Systems and methods are disclosed that monitor movement of a person, or of a vehicle ridden by the person, to determine speed, distance traveled and/or airtime of the person or vehicle. Accelerometer-based sensors, pressure sensors or Doppler sensors may be employed in these systems and methods. A liquid crystal display may attach to the person to display speed, distance traveled and/or airtime.09-08-2011
20110218757METHODS AND APPARATUS HAVING POWER CONTROL FEATURES FOR CONFORMAL SENSING OF CHANGE IN MOTION OF A BODY PART - Sensing a change in motion proximate to a body part of a person via one or more sensing elements disposed on a flexible substrate and having a sufficient mechanical coupling to the body part. A proximity of the sensing element(s) to the body part is detected, and power is coupled to or decoupled from the sensing element(s) based at least in part on the detected proximity.09-08-2011
20090150114ACTIVITY MONITORING SYSTEMS AND METHODS - An activity monitor, comprises housing for attachment to a person; at least one accelerometer disposed within the housing; and a processor disposed within the housing, for processing signals from the accelerometer to assess activity of the person. A method assesses activity of a person, including: sensing acceleration at a first location on the person; processing the acceleration, over time, to assess activity of the person; and wirelessly communicating information indicative of the activity to a second location.06-11-2009
20110295546MEMS ACCELEROMETER DEVICE - A MEMS accelerometer device for use with a machine having a housing with a threaded aperture, and an external data acquisition system, the device including a stud defining a chamber and having a threaded body configured to fasten into the threaded aperture, a printed circuit board disposed in the chamber, an accelerometer sensor chip mounted on and electrically connected to the printed circuit board, and a communication device electrically connected to the printed circuit board and configured for providing measurement data to the data acquisition system.12-01-2011
20100121603METHOD AND SYSTEM FOR FALL-ONSET DETECTION - A method and system for fall-onset detection is provided. The method includes the steps of monitoring acceleration at the thigh of a person; monitoring acceleration at the waist of the person; monitoring orientation of the thigh of the person; and detecting the fall-onset if the orientation of the thigh exceeds a first threshold value and a correlation between variation in acceleration of the thigh and variation in acceleration of the waist exceeds a second threshold value and a correlation between variation in the orientation of the thigh and a fall-template variation exceeds a third threshold value.05-13-2010
20120109575FALL DETECTORS AND A METHOD OF DETECTING FALLS - There is provided a fall detector for detecting falls of a user or an object to which the fall detector is attached, characterized in that the fall detector comprises an air flow sensor for providing measurements indicative of vertical velocity and/or changes in altitude of the fall detector.05-03-2012
20120109574Multi-dimensional vector determining circuit in a sensor integrated circuit package - A sensor integrated circuit package with a Multi-Dimensional Vector Determining Circuit (MDVDC) determines a resultant vector by processing vector component magnitudes detected by the sensor. For example, an accelerometer integrated circuit package contains a sensing circuit, an Analog-to-Digital Converter (ADC), and a MDVDC. The sensing circuit generates a first signal representing an acceleration vector component of the accelerometer along a first axis and generates a second signal representing an acceleration vector component of the accelerometer along a second orthogonal axis. The ADC converts both signals into digital logic values. The MDVDC uses the digital logic values that represent the acceleration vector components to determine a resultant acceleration vector representing the precise acceleration magnitude and direction of the accelerometer. The accelerometer generates an interrupt signal when the resultant acceleration vector magnitude is above a pre-defined threshold value (during a shake condition), or below a pre-defined threshold value (during a free-fall condition).05-03-2012
20090171617METHOD OF DETECTING FREE FALL AND APPARATUS TO DETECT FREE FALL USING THE METHOD - A method of detecting a free fall of a device includes measuring an acceleration of the device, calculating an integral of the acceleration, and determining whether the acceleration is periodic. If the acceleration is not periodic, the integral of the acceleration is compared with a first critical value to determine whether the device falls freely. If the acceleration is periodic, the integral of the acceleration is compared with a second critical value to determine whether the device falls freely. The first and second critical values are different. Since whether the device is periodically accelerated is considered, free fall of the device can be correctly detected, and thus malfunction of the device can be prevented. For example, an unnecessary protection operation for a hard disk drive of the device can be prevented, and thus a user can conveniently use the device.07-02-2009
20110172950INTEGRATED RATE ISOLATION SENSOR - In one embodiment, a system for providing fault-tolerant inertial measurement data includes a sensor for measuring an inertial parameter and a processor. The sensor has less accuracy than a typical inertial measurement unit (IMU). The processor detects whether a difference exists between a first data stream received from a first inertial measurement unit and a second data stream received from a second inertial measurement unit. Upon detecting a difference, the processor determines whether at least one of the first or second inertial measurement units has failed by comparing each of the first and second data streams to the inertial parameter.07-14-2011
20090287449INFORMATION EQUIPMENT FOR DETECTING FALL - Acceleration is detected by an acceleration sensor in information equipment and information of detected acceleration is compared with a threshold value. Then, if the information of the detected acceleration is equal to or less than the threshold value, it is determined that the information equipment is in a weightless condition.11-19-2009
20130218515ELECTRONIC DEVICE - Control section (08-22-2013
20080275664Method and Device for Determining the Roll Angle for Occupant Protection Devices - A method for determining the roll angle for occupant protection devices and a corresponding device are described. A transverse acceleration and a vertical acceleration of the vehicle are detected, and the roll angle of the vehicle is estimated based on the detected transverse acceleration and the detected vertical acceleration.11-06-2008
20080228430Wireless sensor for semiconductor processing systems - A wireless sensor is provided to obtain information relating to vibration of wafers or substrates in a semiconductor processing system. In one exemplary embodiment, a wireless substrate-like sensor is provided and includes a power source adapted to provide power to the sensor, a wireless communication module coupled to the power source, and a controller coupled to the power source and the wireless communication module. An acceleration detection component is operably coupled to the controller to provide information relative to acceleration of the sensor in three axes.09-18-2008
20080228429Systems and methods for location, motion, and contact detection and tracking in a networked audiovisual device - Systems and methods for location, motion, and contact detection and tracking in a portable networked device are disclosed. A portable device may include a motion detection unit including an accelerometer for detecting accelerations in one or more axes. Signals associated with the detected motion are processed to generate estimates of device acceleration, velocity, and relative and absolute locations. Additional processing may be performed to detect user gestures or other user input relevant to portable device control. Particular motion or vibrational characteristics may be also be detected and used by other processes in the portable device.09-18-2008
20120296601Method and apparatus for monitoring motion of a substatially rigid - A method and apparatus for monitoring motion of a substantially rigid body relative to at a first location, in which linear and rotational motions are sensed by one or more motion sensors attached to the substantially rigid body at other locations. The sensed rotation is used to compensate for the angular and centripetal acceleration components in the sensed linear motion. In one embodiment, the components are estimated explicitly from the sensed rotation. In a further embodiment, the sensed rotations are used to estimate the relative orientations of two or more sensors, enabling the linear motions to be combined so as to cancel the angular and centripetal accelerations. A reference sensor may be used for in-situ calibration. When the substantially rigid body is a human head, the reference sensor may be coupled to a helmet or mouthguard.11-22-2012
20110270569Micromachined piezoelectric three-axis gyroscope and stacked lateral overlap transducer (slot) based three-axis accelerometer - This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for making and using x-axis gyroscopes, y-axis gyroscopes, z-axis gyroscopes, two-axis accelerometers and three-axis accelerometers. Combining fabrication processes for such devices can enable the monolithic integration of six inertial sensing axes on a single substrate, such as a single glass substrate. Such devices may be included in a mobile device, such as a mobile display device.11-03-2011
20110208473METHOD FOR AN IMPROVED ESTIMATION OF AN OBJECT ORIENTATION AND ATTITUDE CONTROL SYSTEM IMPLEMENTING SAID METHOD - A method of estimating the orientation of an object in space at time k using measurements of the total acceleration (y08-25-2011
20110208472Movement detection device, electronic device, movement detection method and computer readable medium - Tri-axial acceleration component data detected by a tri-axial acceleration sensor of acceleration acting on a movement detection device is split into respective stationary components obtained by low-pass filtering processing and movement components of the acceleration component data from which the respective stationary component has been removed. Which axial direction has been moved in is detected based on the split movement component expressing the maximum value. A shake duration is detected as a period of time from the point in time when this maximum movement component exceeded a threshold value expressing an upper limit value of a specific range up to once again becoming a value in the specific range after becoming less than a threshold value expressing a lower limit value, or as a period of time from the point in time when the movement component became less than the lower threshold value up to once again becoming a value in the specific range after exceeding the upper threshold value. The magnitude of movement is determined by whether or not the shake duration is a determination period or longer, or by whether or not the vector integral value over the shake duration is a determination threshold value or greater.08-25-2011
20090132197Activating Applications Based on Accelerometer Data - In some implementations, a computer-implemented method includes storing a plurality of acceleration profiles in a mobile device; receiving accelerometer data from an accelerometer in the mobile device; correlating the accelerometer data with one accelerometer profile in the plurality of accelerometer profiles; and activating a user application of the mobile device that is associated with the correlated accelerometer profile. Each acceleration profile can correspond to a sequence of acceleration forces a mobile device would be subjected to when carried with a user during an activity that corresponds to the correlated acceleration profile.05-21-2009
20090187370METHOD AND DEVICE FOR DETECTING ANOMALOUS EVENTS FOR AN ELECTRONIC APPARATUS, IN PARTICULAR A PORTABLE APPARATUS - Detection of an anomalous event in an electronic apparatus includes detecting accelerations acting on the electronic apparatus, establishing a normal-mode range of accelerations that corresponds to normal operation of the apparatus, and detecting the anomalous event when a level of acceleration of the electronic apparatus exits the normal-mode range and remains outside the normal mode range for more than a defined duration. The method includes displacing the normal-mode range toward a current level of acceleration of the electronic apparatus while the level of acceleration remains outside the normal-mode range. Additionally, the normal-mode range is increased toward a maximum size while the level of acceleration remains outside the normal-mode range, and is decreased toward a minimum size while the level of acceleration is within the normal-mode range.07-23-2009
20110224944TESTABLE VIBRATION MONITORING DEVICE AND METHOD - A vibration monitoring device having a reference axis and is provided with two accelerometers fixed to a common support. Each accelerometer includes: an inertia mass movable parallel to the reference axis between an intermediate rest position and two opposite limits, an internal test circuit for moving the inertia mass from a rest position towards a first of the two opposite limits in one testable direction in the absence of vibration of the common support, and sensing means for delivering an acceleration signal corresponding to the motion of the inertia mass parallel to the reference axis, the acceleration signal containing a first signal portion corresponding to the motion of the inertia mass between the intermediate rest position and the first of the two opposite limits, and a second signal portion corresponding to the motion of the inertia mass between the intermediate rest position and the other of the two opposite limits. Remarkably, the testable directions of the two accelerometers are opposite to one another.09-15-2011
20090326858ATTITUDE-ANGLE DETECTING APPARATUS AND ATTITUDE-ANGLE DETECTING METHOD - To provide an attitude-angle detecting apparatus, which detects an attitude angle of a mobile object during movement with good accuracy by correcting an output value from an acceleration sensor, and to provide a method for the same.12-31-2009
20090326857HAND HELD POINTING DEVICE WITH ROLL COMPENSATION - A pointing device includes accelerometers and rotational sensors that are coupled to a processor. The processor samples the accelerometers and rotational sensors to detect gravity and pointing device motion and uses algebraic algorithms to calculate roll compensated cursor control signals. The processor transmits the cursor control signals to a receiver that is coupled to an electronic device that moves the cursor on the visual display.12-31-2009
20090024350Tilt-angle detecting method and apparatus for a motorcycle - A vehicular tilt-angle detecting apparatus includes a steering-angle sensor, a vehicle speed sensor, a lateral-G sensor, a turning-radius calculation unit, a base tilt-angle calculation unit, a transient tilt-angle calculation unit, and a transient tilt angle calculation unit. The turning-radius calculation unit determines a turning radius corresponding to a steering angle based on a predetermined relationship between a steering angle and a turning radius. The base tilt-angle calculation unit calculates a current instantaneous tilt angle of a vehicle body during short-term steady-state turning based on the turning radius and the vehicle speed. The transient tilt-angle calculation unit corrects the initial calculated tilt angle of the vehicle body based on a transient turning radius when a variation of the steering angle is equal to or greater than a predetermined value. When the variation is less than the predetermined value, the transient tilt-angle calculation unit calculates the lateral-G corrected transient tilt angle.01-22-2009
20110224943System and Method for Adaptive Motion Sensing with Location Determination - A system and method for adaptive motion sensing with location determination is described. In one embodiment, the adaptive motion sensor is based on vibration sensor readings and can identify different states of motions based on modifiable parameters.09-15-2011
20110231145METHOD AND APPARATUS FOR FALL DETECTION - The invention relates to a method and apparatus for fall detection. According to the invention, the method for detecting the fall of an object comprises the steps of acquiring (09-22-2011
20110231144PHYSICAL AMOUNT MEASURING DEVICE AND PHYSICAL AMOUNT MEASURING METHOD - It is possible to rapidly or highly accurately estimate a highly reliable offset according to situations and improve further the reliability of the estimated offset even if a measurement data is not obtained in a space in which the magnitude of a vector physical quantity to be measured is uniform. The offset included in the obtained vector physical quantity data are statistically estimated based on a predetermined evaluation formula using a difference vectors. In the estimation of the offset, reliability information on a reference point is calculated based on at least one of the vector physical quantity data, the difference vectors and a plurality of estimated reference points according to a calculation parameter for calculating the reliability information on the reference point, whether or not the reference point is reliable is determined by comparing the reliability information with a determination threshold value, and the reference point determined to be reliable is output as an offset included in vector physical quantity data determined by a data acquisition portion.09-22-2011
20120078571GEOMAGNETISM SENSING DEVICE - An X-axis sensor, a Y-axis sensor, and a Z-axis sensor that detect a geomagnetic vector are provided, and the direction of the geomagnetic vector is sought on a spherical coordinate from the detection output of each sensor. A reference axis is determined in the spherical coordinate, a hypothetical central point is sought on the reference axis depending on data of two coordinate detection points, a perpendicular line to a plane that includes vectors from the hypothetical central point to the respective data is sought from the cross product of the vectors, an axis that is parallel to the perpendicular line and passes through an origin is set to be a calculated rotational axis, and movement centered around the calculated rotational axis is specified.03-29-2012
20120078569METHOD AND CONTROL UNIT FOR CLASSIFYING A COLLISION OF A VEHICLE - A method for detecting a collision of a vehicle is described, including a step of receiving a linear signal and a rotation signal via an interface, the linear signal containing information about a linear motion, and the rotation signal containing information about a rotational motion of the vehicle. The method also includes a step of supplying an evaluation signal based on the linear signal and the rotation signal, the evaluation signal containing information about the collision.03-29-2012
20120197587VEHICLE RIDE EVALUATION - The invention relates generally to vehicle ride evaluation and, more particularly, to a method of information sensing and transformation to assist a vehicle operator to make an informed evaluation for vehicular ride quality and a composite comprised of said vehicle and portable device secured to said vehicle for said information sensing and transformation.08-02-2012
20090006028Motion Detection Apparatus and Motion Detecting Method - A motion detection apparatus includes an acceleration sensor which detects acceleration generated by motion of an electronic device; a motion detecting section including a statistical processing section which calculates the average value of data provided from the acceleration sensor, calculates the difference between the average value and the last value of the data obtained, and calculates a pseudo-variance value of the data from the calculated difference; a threshold comparing section which compares the pseudo-variance value calculated by the motion detecting section with a motion threshold to generate a signal value in response to determination that the pseudo-variance value has exceeded the motion threshold; a first buffer memory which sequentially stores signal values generated by the threshold comparing section at predetermined time intervals; and a signal generating section which includes means for adding up values in the first buffer memory, thereby appropriately associating acceleration with motion.01-01-2009
20080262786NON-EXERCISE ACTIVITY THERMOGENESIS (NEAT) GAMES AS UBIQUITOUS ACTIVITY BASED GAMING - A system for tracking physical activity comprising a sensor that detects movement carried by a first user, converts the movement into an electrical data signal and transmits the signal to a receiver, a receiver that transfers the movement data in the electrical data signal to a storage medium, and a processor that executes instructions to convert the movement data to a graphic representation of the first users movement. A method for monitoring physical activity, comprising attaching a sensor to a user wherein the sensor detects physical movement of the used and converts the physical movement into movement data indicative of the movement, transmitting and receiving the movement data signal, storing the movement data in a storage medium, and analyzing the movement data to monitor physical activity of the user.10-23-2008
20080262785METHOD AND DEVICE FOR ANALYSING THE EFFECTS OF THE VIBRATIONS OF A VEHICLE ACTING ON A PERSON - Methods and systems for analyzing vibrations of a vehicle acting on a person. The person uses a sprung vehicle seat. A detection unit detects acceleration values fitted to the vehicle seat in the x-, y- and z-axes at preset intervals of time. An increase over time of the acceleration values cumulated with one another is determined and a time calculated from this when a pre-determinable permitted maximum of the cumulated acceleration values will foreseeably be reached.10-23-2008
20120197589DEVICE, SYSTEM AND METHOD FOR MONITORING THE LINE SAG OF POWER LINES AND SUCH - The invention relates to monitoring line sag of objects, especially monitoring the line sag of geographically wide objects, such as electric lines. The apparatus according to the invention can be fastened to the object to be monitored and it comprises a physical sensor, a data processing unit operationally connected to the sensor and communication means for relaying the data wirelessly to outside the apparatus from the data processing unit. According to the invention the sensor is arranged to recognize the movement or change of movement of the apparatus and the data processing unit is arranged to derive a parameter describing the state of the object on the basis of the movement data provided by the sensor. The invention also relates to a system and a method. The invention allows monitoring the status of electric lines inexpensively and in a centralized way.08-02-2012
20120197588APPARATUS AND METHOD FOR INSPECTING ROAD SURFACES - An apparatus for inspecting road surfaces includes a global positioning system (GPS) unit, an acceleration sensor, a comparing module, and a storing module. The GPS unit is mounted on a car to detect a position of the car. The acceleration sensor is mounted on the car to sense vertical movement of the car. The vertical movement of the car is recorded as a coordinate along a Z-axis of the car. The comparing module compares the coordinate along the Z-axis of the car with a reference coordinate. The storing module stores the coordinate along the Z-axis and the position corresponding to the coordinate when the coordinate along the Z-axis is greater than the reference coordinate.08-02-2012
20100274524System and Method for Auto Triggering of a Data Acquisition Device - A data acquisition device for an auto triggering thereof comprises a movement detector, a distance detector, a processor, and a data acquiring component. The movement detector detects movement data of the data acquisition device. The movement data indicates a state of movement for the data acquisition device. The state of movement is one of static and dynamic. The distance detector detects distance data between the data acquisition device and an object to which data is to be acquired. The processor receives the movement data to determine the state of movement and, when the state of movement is determined to be static, receives the distance data to determine the distance of the object from the data acquisition device. The data acquiring component acquires the data from the object when the processor initially determines that the state of movement is static and subsequently determines the distance is within a predetermined range.10-28-2010
20100191499Systems And Methods For Determining Drop Distance And Speed Of Moving Sportsmen Involved In Board Sports - A system for determining airtime, speed and/or drop distance of a moving sportsman includes at least one accelerometer for detecting vibration or acceleration of the sportsman and/or a GPS unit. A processor in communication with the at least one accelerometer may process signals from the accelerometer to determine free-fall.07-29-2010
20090271142PHYSICAL QUANTITY MEASURING INSTRUMENT AND SIGNAL PROCESSING METHOD THEREOF - The present invention relates to a physical quantity measuring instrument and signal processing method thereof capable of reducing noise components and improving reliability without increasing size or cost of the circuit. A physical quantity detecting unit (10-29-2009
20100241391APPARATUS AND METHOD FOR MEASURING THE VELOCITY AND ACCELERATION OF A VEHICLE USING SAD ALGORITHM - Provided are a single-board type vehicle driving information measuring apparatus and method using a sum of absolute difference (SAD) hardware accelerator. In the vehicle driving information measuring apparatus and method, time differences between vehicle sensing signals sensed by two or more sensing units are accurately calculated in real time by the SAD hardware accelerator, and the velocity and acceleration of a vehicle can be accurately calculated based on the accurate time differences between the vehicle sensing signals. The vehicle driving information measuring apparatus is operated in two separate modes, that is, a vehicle sensing mode and a velocity measuring mode. Accordingly, power consumption of the apparatus can be minimized. In addition, the apparatus can be provided with a wireless transceiver, so that the apparatus can be constructed and operated without external cables. Further, functional blocks of the apparatus can be powered separately.09-23-2010
20100217558MINIMIZATION OF FALSE TRIGGER IN A MOBILE ELECTRONIC SYSTEM - Preventative actions normally performed in response to detecting a trigger event triggered by an accelerometer attached to a portable device may be bypassed during a quiet period. The quiet period may be initiated in response to detecting at least one repeated trigger event within a time window encompassing the first trigger event, and may be terminated based on an expiration criterion.08-26-2010
20090076765METHOD AND APPARATUS FOR ESTIMATING A MOTION PARAMETER - A method and apparatus for estimating a motion parameter corresponding to a subject element employs one or more accelerometers operable to measure accelerations and a processing system operable to generate a motion parameter metric utilizing the acceleration measurements and estimate the motion parameter using the motion parameter metric.03-19-2009
20120035881Activating Applications Based on Accelerometer Data - In some implementations, a computer-implemented method includes storing a plurality of acceleration profiles in a mobile device; receiving accelerometer data from an accelerometer in the mobile device; correlating the accelerometer data with one accelerometer profile in the plurality of accelerometer profiles; and activating a user application of the mobile device that is associated with the correlated accelerometer profile. Each acceleration profile can correspond to a sequence of acceleration forces a mobile device would be subjected to when carried with a user during an activity that corresponds to the correlated acceleration profile.02-09-2012
20090043530PROCESS VARIABLE TRANSMITTER WITH ACCELERATION SENSOR - A process variable transmitter for use in an industrial process control or monitoring system includes a transmitter housing and a process variable sensor having a sensor output related to a process variable. An accelerometer is coupled to the transmitter and provides an accelerometer output related to acceleration. Diagnostic circuitry provides a diagnostic output as a function of the sensor output and the accelerometer output.02-12-2009
20100211349ACCELEROMETER AND METHOD FOR CONTROLLING AN ACCELEROMETER - Method for obtaining physiological muscle values of a user by means of a programmable accelerometer, wherein the method comprises the following operations: 08-19-2010
20090319221Program Setting Adjustments Based on Activity Identification - An electronic device monitors accelerations using an inertial sensor. The electronic device identifies a current motion state based on the accelerations. The electronic device determines an application that subscribes to a motion state identification service and notifies the application of the current motion state.12-24-2009
20090018794Method and device for measuring the progress of a moving person - The invention relates to measuring devices to be used in physical measuring, and more particularly, to a method and a device for measuring the progress of a moving person. In the solution according to the invention the quantities describing the progress of the moving person can be calculated based on vertical acceleration values of the body measured by means of an acceleration sensor, and on the measured time. The invention aims at providing a solution, better and simpler than prior solutions, for measuring the progress of a moving person, which solution is applicable for use in a multitude of measuring solutions for ways of locomotion of various types.01-15-2009
20110112793Extracorporeal Physiological Measurement Device - An extracorporeal physiological measurement device is disclosed, having fastening means for attaching to the body of a person or animal, measurement means for detection of values of a physiological measured variable on the body, and movement-detecting means and measured-value-influencing means connected thereto at the input for influencing the detected measured values before processing or storage as a function of a position or movement status of the body or the measurement device detected by the detection means such that the measured-value-influencing means have a unit for detection of a shift in position between the measurement device and the body.05-12-2011
20130138386MOVEMENT/POSITION MONITORING AND LINKING TO MEDIA CONSUMPTION - Systems and methods are disclosed for identifying users of portable user devices according to one or more accelerometer profiles created for a respective user. During a media session, the portable computing device collects media exposure data, while at the same time, collects data from the accelerometer and compares it to the user profile. The comparison authenticates the user and determines the physical activity the user is engaged in. Additional data may be collected from the portable computing device to determine one or more operational conditions of the device itself. Accelerometer data may also be used to determine probabilities that one or more users were actually exposed to a media event.05-30-2013
20110029275METHOD AND SYSTEM FOR TESTING AND CALIBRATING AN ACCELEROMETER OF AN ELECTRONIC DEVICE - A method and system for testing and calibrating an accelerometer of an electronic device are provided. In accordance with one embodiment, there is method of testing and calibrating an accelerometer of an electronic device, comprising: levelling a test fixture; placing the electronic device in a nest of the test fixture; detecting the electronic device within the nest; calculating an offset value for each sensing axis of the accelerometer in response to detecting the electronic device within the nest; and storing the offset values in a memory of the electronic device.02-03-2011
20110246125Situation Awareness By Noise Analysis - Embodiments of the invention relate to spectrally and spatially dissecting high frequency noise from a signal of a motion sensor. Data received from the dissected signal is reduced to statistical averages for selected frequency bands and spatial dimensions. A logic engine translates the statistical average to real-world application.10-06-2011
20110119021System and Method for Simulating a Billiard Cue Stroke - A billiard cue stroke simulator includes a wireless acceleration sensing device and a computing system. The wireless acceleration sensing device measures acceleration of a billiard cue along two or more axes of a coordinate system during a stroke of the billiard cue and generates acceleration data including the acceleration data. Additionally, the wireless acceleration sensing device transmits a wireless communication signal including the acceleration data to the computing system. The computing system generates image data indicating movement of the billiard cue during the stroke of the billiard cue based on the acceleration data and displays the image data. In this way, the billiard cue stroke simulator simulates the stroke of the billiard cue.05-19-2011
20110246126REVOLUTION INCREASE-DECREASE DETERMINATION DEVICE AND REVOLUTION INCREASE-DECREASE DETERMINATION METHOD - An acceleration-deceleration determination device includes: a DFT analysis unit which calculate, from an engine sound, a frequency signal at a predetermined frequency for each of predetermined time periods; and an acceleration-deceleration determination unit which determines whether the number of engine revolutions is increasing or decreasing, by determining whether a phase of the frequency signal is increasing at an accelerating rate over time or decreasing at an accelerating rate over time.10-06-2011
20110125453LOCATING APPARATUS, LOCATING METHOD AND COMPUTER PROGRAM STORAGE PRODUCT THEREOF FOR A MOBILE DEVICE - A locating apparatus, a locating method and a computer program storage product thereof for a mobile device are provided. The mobile device has an initial speed. The locating apparatus comprises a sensing unit, a calculation unit and a processing unit. The sensing unit is configured to sense acceleration information and height displacement information. The calculation unit is configured to calculate angle information according to the initial speed, the acceleration information, the height displacement information and a predetermined time interval, is configured to calculate modified acceleration information according to the acceleration information and the angle information, and is configured to calculate composite displacement information according to the initial speed, the modified acceleration information and the predetermined time interval, so that the processing unit is able to generate more accurate location information according to the composite displacement information and the height displacement information.05-26-2011
20110246123PERSONAL STATUS MONITORING - A method for monitoring kinetic motion includes: capturing acceleration data of a human body of interest from a plurality of points on the human body of interest; using the plurality of points that correlate to parts of the human body of interest to determine a position or view of the human body of interest, wherein the position or view includes a kinetic signature comprising motion characteristics; and displaying a live representation of the human body of interest by using the determined position or view of the human body of interest.10-06-2011
20110246124REMOTE APPLIANCE OR MACHINE MONITORING METHOD AND SYSTEM - The present invention relates to methods and systems for monitoring operational cycles of one or more appliances, such as washers and dryers, and remotely indicating when such operating cycles have terminated. In one aspect, the present invention provides an appliance or machine monitoring system. The system includes a monitor and transmitter unit configured to monitor an operation cycle of an appliance or machine and transmit a wireless signal upon completion of the operation cycle. The monitor and transmitter unit includes an operation cycle sensor, a signal conditioner, a comparator, and a wireless transmitter broadcasting a wireless signal based upon the signal generated by the comparator. The system further includes a portable receiver and alert unit configured to receive signals generated by the wireless transmitter and generate a signal indicative of completion of an operation cycle of an appliance or machine.10-06-2011
20110246122MOTION DETERMINATION APPARATUS, METHOD AND COMPUTER READABLE MEDIUM - In one embodiment, a motion determination apparatus includes: a basic motion determination module determining a basic motion of a user, based on a sensor signal for detecting a motion of the user; a basic motion recording module recording the basic motion in a temporal sequence; a motion scene determination table configured to store the basic motion and a condition under which the basic motion occurs, for each motion scene; a motion scene determination module determining that the basic motion recorded in the temporal sequence corresponds to a certain motion scene, based on the motion scene determination table; a detailed label determination table storing a detailed label indicating a detailed motion in the motion scene, for each motion scene; and a detailed label determination module determining that the basic motion included in the motion scene corresponds to a certain detailed label, based on the detailed label determination table.10-06-2011
20100131228MOTION MODE DETERMINATION METHOD AND APPARATUS AND STORAGE MEDIA USING THE SAME - A motion mode determination apparatus is disclosed, including an inertial device, a frequency decomposition module, a characteristic value generator, a training module and a determination module. The inertial device collects at least a first motion signal corresponding to a first motion mode and at least a second motion signal corresponding to a second motion mode, wherein each of the first and second motion signals includes a first signal, a second signal and a third signal. The frequency decomposition module decomposes the first signal into a first high-frequency signal and a first low-frequency signal. The characteristic value generator generates a plurality of characteristic values, wherein the characteristic values are the means and variances for each group of the first high-frequency signals, the first low-frequency signals, the second signals and the third signals respectively. The training module generates first and second data groups. The determination module determines the motion mode of a third motion signal.05-27-2010
20110178759METHOD OF ESTIMATING STRIDE LENGTH, METHOD OF CALCULATING MOVEMENT TRAJECTORY, AND STRIDE LENGTH ESTIMATING DEVICE - A method of estimating a stride length includes: detecting acceleration of a user's vertical movement; and estimating a stride length using the detected acceleration by changing the degree of correlation between the acceleration and the stride length, in which the stride length is increased as the detected acceleration increases, based on user's speed.07-21-2011
20080255794PHYSICAL ACTIVITY MONITORING AND PROMPTING SYSTEM - An apparatus and method are provided in various illustrative embodiments for monitoring a user's physical activity and prompting a user to undertake physical activity as needed. An illustrative embodiment includes a wearable activity sensor, an output device, and a control system. The control system is configured to receive data from the activity sensor and provide output via the output device as a function of the data from the activity sensor. The output comprises content associated with utilizing an exercise enabling device.10-16-2008
20110082663Method for ascertaining a rotational direction of a rotating body, and wheel sensor module - In a method for ascertaining a rotational direction of a rotating body, one rotational direction and one rotational speed value which indicates the rotational frequency of the rotating body are ascertained in each of multiple measurements. The rotational speed values of the multiple measurements are compared to each other, and a rotational direction of the rotating body is ascertained from the measured rotational directions and the comparison of the rotational speed values.04-07-2011
20100070235INFORMATION PROCESSING APPARATUS AND METHOD - A moving context and a moving time of a user are specified by acceleration information while the user is moving. The moving context represents the user's moving status. The acceleration information is measured by an acceleration sensor carried with the user. The moving context and the moving time are stored in time series. The moving context and the moving time between a moving start time and an arrival time are set as a moving pattern. A tag is set to the moving context in the moving pattern. The tag identifies a function to be executed for the moving context. A moving estimation pattern is generated as the moving pattern having the moving context and the moving time specified by acceleration information measured when the user is newly moving. The function identified by the tag is executed, when the moving context set with the tag in the moving estimation pattern coincides with a moving context specified by acceleration information measured while the user is newly moving.03-18-2010
20110098967Method and System for Detecting Forces on Aircraft - A method for sensing a force applied to an aircraft includes receiving a derivative of the acceleration of a motion of a portion of the aircraft, determining whether the derivative of the acceleration of the motion of the portion of the aircraft exceeds a threshold, and outputting an indication that a force has been applied to the portion of the aircraft responsive to determining that the derivative of the acceleration of motion of the portion of the aircraft exceeds the threshold.04-28-2011
20110153261SMART FOOTWEAR AND OPERATING METHOD THEREOF - Smart footwear includes: a film type insole sensor measuring a change of force applied by a user's foot, as a resistance value; an acceleration sensor measuring an acceleration value according to a change in the motion of the user's foot; and a microcontroller estimating the user's current condition and the quantity of motion based on the resistance value and the acceleration value, and generating user condition information and quantity of motion information.06-23-2011
20110077898Altimeter with calibration - An altitude dead reckoning system using measurements of forward velocity, forward acceleration, and yaw angle rate to determine changes in altitude with automatic calibration of an accelerometer bias.03-31-2011
20110060549METHODS AND APPARATUS FOR ASSESSING MARKING OPERATIONS BASED ON ACCELERATION INFORMATION - Marking devices of the type used for marking a presence or an absence of underground facilities and including motion detectors such as accelerometers are described. Methods of collecting and analyzing motion information indicative of the motion of a marking device are also described. The motion information may be used for various purposes, including documenting performance of a marking operation and/or performance of a particular technician, pattern determination and comparison, as well as quality control assessment.03-10-2011
20110060550System And Method For Non-Wirelessly Determining Free-Fall Of A Moving Sportsman - A system for determining airtime of a moving sportsman includes at least one accelerometer for detecting vibration or acceleration of the sportsman. A processor in communication with the at least one accelerometer processing signals from the accelerometer to determine free-fall. A pressure sensor may be used to determine change in altitude and the processor may process signals from the pressure sensor with the accelerometer signals to determine airtime and drop distance during free-fall. A method for determining airtime of a moving sportsman includes processing data from one or more accelerometers attached to the sportsman, to determine when the sportsman is in free-fall, and determining a time period corresponding to the free-fall.03-10-2011
20120303314ANGLE MEASUREMENT DEVICE, ANGLE MEASUREMENT METHOD AND CONSTRUCTION MACHINERY - An angle measurement device includes a microprocessor, a primary acceleration transducer, an output device, and an auxiliary acceleration transducer. There is a predetermined angle between a positive direction of a primary sensitive axis of the primary acceleration transducer and that of a auxiliary sensitive axis of the auxiliary acceleration transducer; the primary acceleration transducer and the auxiliary acceleration transducer output respectively a first initial parameter and a second initial parameter; the microprocessor obtains a first actual parameter of the primary acceleration transducer according to the first initial parameter, the second initial parameter and the predetermined angle and then gets an angle parameter according to the first actual parameter; the first actual parameter characterizes the parameter of the primary acceleration transducer in the case of no external interference. An angle measurement method and a construction machinery with the angle measurement device is also provided. The provided angle measurement device and method can obtain measuring result in dynamic state accurately.11-29-2012
20120203496ACCELERATION DETECTING DEVICE, ELECTRONIC APPARATUS, PEDOMETER, AND PROGRAM - An acceleration detecting device operable in a power-saving mode, including an acceleration detecting section for detecting acceleration in a first direction and a second direction independent from the first direction. The device includes a sampling period reducing section for reducing a sampling period used for detecting the acceleration in the first direction when the magnitude of the acceleration in the first direction exceeds a predetermined value.08-09-2012
20110178760POWER MEASUREMENT METHOD AND APPARATUS - There is provided an apparatus for estimating the power used by a user in performing the vertical component of a movement, the apparatus comprising an accelerometer for attachment to a user and for measuring the acceleration experienced by the user; the apparatus further comprising a processor configured to receive the measurements of the acceleration from the accelerometer attached to the user; estimate the vertical accelerations from the received measurements; and estimate the power used from the vertical accelerations.07-21-2011
20100004893Two-axis accelerometer for detecting inclination without the effect of common acceleration - A system and device for detecting inclination that eliminates the need to compensate for the acceleration of the vehicle is disclosed. The system includes a multi-axis acceleration sensing device that is fixedly attached to the object such that each sensing axis of the multi-axis acceleration sensing device lies in a common plane with the forward-aft axis of the object and the sensing axes are orthogonal to one another and each sensing axis is oriented 45 degrees from the forward-aft axis.01-07-2010
20090240462System and Method for Capturing an Event in MEMS Inertial Sensors - A method of capturing an event in a MEMS accelerometer stores acceleration data in memory, detects a trigger event based on the acceleration data, and modifies a configuration of the memory so that a specified amount of the acceleration data is saved. A MEMS event capturing system includes an inertial sensor having sensor circuitry and event capturing circuitry implemented with the sensor circuitry. The event capturing circuitry includes memory capable of storing acceleration data received from the inertial sensor and a detection module operatively coupled with the memory that detects a trigger event. The event capturing circuitry also includes a management module operatively coupled with the memory and the detection module that modifies the memory's storage configuration when the trigger event is detected.09-24-2009
20090240461BODY MOVEMENT DETECTOR, BODY MOVEMENT DETECTION METHOD AND BODY MOVEMENT DETECTION PROGRAM - A vertical component is extracted from an acceleration vector corresponding to body movement of a user from a three-axis acceleration sensor, and the vertical-component is separated by a high-band/low-band separating unit into a high-band component and a low-band component. Using these components, a peak detection/determination processing unit detects a peak-position candidate of action of the user in the vertical direction, identifies a peak-position candidate on the basis of an energy ratio between the high-band component and the low-band component, performs waveform matching regarding a predetermined range including each peak-position candidate, thereby determining a peak position, and detects body movement on the basis of the peak position, and a step-position analyzing unit detects a body-movement pitch.09-24-2009
20080255795Force Sensing Apparatus and Method to Determine the Radius of Rotation of a Moving Object - An apparatus having an arrangement of two or more identical accelerometers with aligned sensitivity axes. Each of the accelerometers senses motion over at least one axis. The accelerometer readings include a component corresponding to gravitational force that is the same for each accelerometer in the arrangement. Logic circuitry in communication with the accelerometer arrangement couples accelerometer signals to a processor to compute motion variables.10-16-2008
20110054831MOVEMENT DETECTION DEVICE, ELECTRONIC DEVICE, MOVEMENT DETECTION METHOD AND STORAGE MEDIUM STORED WITH A PROGRAM - A movement detection device that includes an acceleration detection unit, a splitting unit and a movement detection unit is provided. The acceleration detection unit detects each respective acceleration component of acting acceleration for each axis of a three-dimensional orthogonal coordinate system and outputs respective acceleration component data. The splitting unit splits the respective acceleration component data output from the acceleration detection unit into a stationary component obtained by low-pass filter processing and a movement component that is the respective acceleration component data from which the respective stationary component has been removed. The movement detection unit detects which axial direction the acceleration detection unit has moved in for each of the axes based on a movement component indicating the maximum value split by the splitting unit.03-03-2011
20110054830SYSTEM AND METHOD FOR ORIENTATION-BASED OBJECT MONITORING AND DEVICE FOR THE SAME - This invention relates to methods and systems for accelerometer-based sensing of motion and orientation of a portable device affixed to or integral with an object, to trigger an audio or visual output based on the motion or orientation of the object the portable device is monitoring. The audio output can be pre-recorded in the device memory or can be user recorded through the “tilt and tell” device voice recording. The invention also employs unique movement and orientation to estimated usage, the person using the device, and other application specific usage information. The unique movement can also be used as user interface to the device.03-03-2011
20110046914DEVICE FOR DETECTING A PERCUSSION EVENT, AND ASSOCIATED MOBILE SYSTEM - The device for detecting percussion events (DISP) comprises at least one axial accelerometer sensor (ACC02-24-2011
20080306707Impact Reporting Head Gear System And Method - A system for determining airtime of a moving sportsman includes at least one accelerometer for detecting vibration or acceleration of the sportsman. A processor in communication with the at least one accelerometer processing signals from the accelerometer to determine free-fall. A pressure sensor may be used to determine change in altitude and the processor may process signals from the pressure sensor with the accelerometer signals to determine airtime and drop distance during free-fall. A method for determining airtime of a moving sportsman includes processing data from one or more accelerometers attached to the sportsman, to determine when the sportsman is in free-fall, and determining a time period corresponding to the free-fall.12-11-2008
20110071789Real-time motion recognition system and method - A system and method that may sense and recognize a motion of a user is provided. The system and method may recognize a variety of motions of the user based on sensing data received from a remote controller.03-24-2011
20100324858METHOD AND DEVICE FOR DETERMINING THE CHANGE IN THE FOOTPRINT OF A TIRE - A method for determining a change in the footprint of a tire, on the basis of a signal, which may be assigned to the rotation of the tire, is output by a sensor, and corresponds to an acceleration, the determination being performed by the following: recording at least one acceleration signal g12-23-2010
20090171615Apparatus and method for classification of physical orientation - A state classifier uses learning obtained from a plurality of training algorithms each adapted to differentiate between states of physical orientation of an object in response to input data from an tri-axial accelerometer. At least two of the training algorithms are trained using data from an accelerometer mounted at a non-ideal angle. The classifier is trained to distinguish between the desired states from data collected from an tri-axial accelerometer device mounted at a plurality of respective angles with respect to a optimal axis on the object, wherein the angles are in the range of −180 degrees to +180 degrees. The classifier may include a plurality of classifiers and a decision fusion module used to combine the decisions from the respective classifiers to ascertain a state.07-02-2009
20090171614System and Method for Processing Raw Activity Energy Expenditure Data - According to one embodiment, a method is provided for calculating, by an activity monitor comprising one accelerometer, a raw activity energy expenditure data based on movement by a user. The method includes determining if the raw activity energy expenditure data is associated with a high intensity physical activity, wherein the high intensity physical activity causes the raw activity energy expenditure data to differ from an expected activity energy expenditure data. The method includes calculating a corrected activity energy expenditure data, if the raw activity energy expenditure data is associated with the high intensity physical activity, based on the raw activity energy expenditure data, wherein the corrected activity energy expenditure data is substantially identical to the expected activity energy expenditure data.07-02-2009
20120310588ELECTRONIC DEVICE AND DISPLAY ADJUSTMENT METHOD - An electronic device includes a display, an acceleration sensor, and a processing unit. The acceleration sensor detects displacement information of the electronic device. The processing unit compares the displacement information with an initial orientation information of the electronic device to determine directional movement of the electronic device. The processing unit shifts content of a display of the electronic device according to the directional movement.12-06-2012
20120310587Activity Detection - Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for determining a presumed activity associated with a mobile device. A plurality of sensor values detected by one or more sensors onboard the mobile device is received over a period of time. A plurality of derived values is calculated from the plurality of sensor values. The derived values are selectively combined to generate one or more abstract values. A presumed activity is identified from a plurality of possible activities based on a level of similarity between the one or more abstract values and expected values of each of the plurality of possible activities that correspond to the one or more abstract values.12-06-2012
20100082286METHOD AND APPARATUS FOR OPERATING AN INPUT DEVICE - Disclosed herein is an improved input device for a processing system, such as, for example a computer system; and an improved method for operating that input device. The system monitors at least one indicia, such as an operating parameter of the input device, where the operating parameter has a first characteristic when the input device is in one operating position or state, but where are the operating parameter has a second characteristic when the input device is in another position or state. In one example, the operating parameter includes generally vertical movement of the input device. In other embodiments, other operating parameters may be relied upon.04-01-2010
20130197856Method and system for discerning a false positive in a fall detection signal - Methods reduce the likelihood of an MPERS device falsely reporting a high acceleration event as a fall impact. The device stores acceleration data acquired before the high acceleration and afterward. If a number of samples of magnitude values from accelerometer sensors in the device acquired during as interval before the high acceleration that approach 0G exceeds a predetermined number, the high acceleration is deemed from a non-fall. Acceleration sensors can also indicate an orientation change before/after the high acceleration, and a barometric pressure sensor can do the same, to further characterize an event as a non-fall. A method compares current event data to composite data sets that have been determined from a plurality of empirically derived data sets of fall and non-fall events. High correlations can indicate falls, or non-falls, respectively. Further statistical analysis of data acquired after an event reduces the likelihood of falsely indicating a fall.08-01-2013
20110153262COLLISION DETECTION APPARATUS - A collision detection apparatus includes: an acceleration acquisition processing unit 06-23-2011
20110264400DEVICE AND METHOD FOR DETERMINING A CHARACTERISTIC OF A PATH FORMED BY CONSECUTIVE POSITIONS OF A TRIAXIAL ACCELEROMETER RIGIDLY CONNECTED TO A MOBILE ELEMENT - Device for determining a characteristic of a trajectory formed of successive positions of a triaxial accelerometer (10-27-2011
20110264401Overall Motion Determination - An apparatus, a method, and a computer program are disclosed. The apparatus comprises a processor. The processor is configured to obtain instantaneous acceleration values representing lower limb motion of a user, to form an effective acceleration value from the instantaneous acceleration values over a plurality of steps of the user, and to determine a motion parameter representing overall motion of the user by means of the effective acceleration value.10-27-2011
20100023296ADAPTIVE VEHICLE CONTROL SYSTEM WITH DRIVING STYLE RECOGNITION BASED ON VEHICLE U-TURN MANEUVERS - An adaptive vehicle control system that classifies a driver's driving style based on vehicle U-turn maneuvers. A process determines if the vehicle has started a turn if the yaw rate is greater than a first yaw rate threshold, and determines a vehicle heading angle based on the yaw rate and a sampling time if the vehicle has started a turn. The process then determines whether the vehicle maneuver has been completed by determining if the yaw rate is less than a second yaw rate threshold. The process then determines that the completed maneuver was a U-turn maneuver if the yaw rate is less than a third yaw rate threshold during the maneuver, the final vehicle heading angle is within a heading angle range and the duration of the maneuver is less than a predetermined time threshold. In one non-limiting embodiment, the heading angle range is between 165° and 195°.01-28-2010
20090063088Wristwatch type acceleration detection module - Disclosed is a wristwatch type acceleration detection module for measurement of exercise quantity, including a microprocessor, an acceleration sensor, a timer, a hand-swing-acceleration-vs-pace-span database, and a display device. The acceleration sensor detects a hand swing count of the user in movement and an acceleration induced by the hand swinging. The timer measures a time period when the user is in movement. The microprocessor receives the hand swing acceleration and the hand-swing-acceleration-vs-pace-span plot stored in the hand-swing-acceleration-vs-pace-span database to obtain the corresponding pace span and further computes a moving distance and a moving speed of the user through predetermined formula based on the pace span, the hand swing count, and the time period of movement of the user.03-05-2009
20090240463Activity Detection in MEMS Accelerometers - A method of detecting activity in a MEMS accelerometer captures an acceleration bias, measures acceleration at a predetermined time, calculates a change in acceleration using the measured acceleration and the acceleration bias, and compares the change in acceleration to a threshold to detect activity. A method of detecting inactivity uses a similar technique along with a timer. The method of detecting inactivity in a MEMS accelerometer captures an acceleration bias, measures acceleration at a predetermined time, calculates a change in acceleration using the measured acceleration and the acceleration bias, and compares the change in acceleration to a threshold to detect inactivity. The method further determines if the change in acceleration is less than the threshold and, if so, determines if a predetermined period of time has elapsed to detect inactivity.09-24-2009
20100131227SYSTEM AND METHOD OF CORRELATING THE ORIENTATION OF A TRI-AXIAL ACCELEROMETER - A system and method for analyzing a device that includes a mass configured for motion. The system includes a tri-axial accelerometer disposed to detect acceleration vectors of the device and to output three channels of acceleration data, and a user interface receiving the three channels of acceleration data. The user interface is configured to correlate the three channels of acceleration data with a reference frame defined by three orthogonal axes intersecting at a vertex, and includes a display and a selector. The display shows sets of options that represent dispositions of the device with respect to gravity, placements of the tri-axial accelerometer with respect to the device, and orientations of the tri-axial accelerometer with respect to the device. The selector selects one device disposition option, one tri-axial accelerometer placement option, and one tri-axial accelerometer orientation option.05-27-2010
20120150483Machine Logic Airtime Sensor For Board Sports - An airtime sensor for board sports includes a detector for generating signals representative of vibration associated with motion of a board sports vehicle along a surface. State machine logic filters the signals through a first low pass filter, filters the signals through a second low pass filter, and combines filtered signals from the first and second low pass filters to determine airtime.06-14-2012
20120046902MOTION PLANE CORRECTION FOR MEMS-BASED INPUT DEVICES - An electronic motion-based input device and method for correcting errors in acceleration due to a deviation from a horizontal plane of motion by correcting for gravitational acceleration components due to the deviation in the plane of motion.02-23-2012
20120046901MOTION CAPTURE APPARATUS - A motion capture apparatus (02-23-2012
20120046900INSTABILITY MONITORING DEVICE AND SYSTEM, IN PARTICULAR FOR A RAIL VEHICLE - An instability monitoring device for a rail vehicle, includes: at least a first accelerometer for delivering a first acceleration signal in response to vibration along a reference axis, at least a first solid-state safety relay, having two main terminals and being switchable between a closed state and an open state, and a programmable logic device connected to the first accelerometer and to the first solid-state relay, the programmable logic device is a field programmable gate array (FPGA) or a complex programmable logic device (CPLD), provided with non-volatile logic blocks running simultaneously in parallel and implementing an instability monitoring algorithm to change the state of the first solid-state relay based on an instability condition of the first acceleration signal.02-23-2012
20110029276SYSTEM AND PROCEDURE FOR THE REAL-TIME MONITORING OF FIXED OR MOBILE RIGID STRUCTURES SUCH AS BUILDING STRUCTURES, AIRCRAFT, SHIPS AND/OR THE LIKE - This invention relates to a system and a procedure for the carrying out of the ongoing monitoring in time of the distortions in a stationary or moving structure, due to the various effects acting thereupon, such as frictional forces, forces produced by loads, resistance forces, etc. The disturbances exerted on a structure may cause distortions, which may be calculated by using the warp and twist angles. When the disturbance acts on the structure for a period of time, these measured values may be used by a processor integrated in the system which, by means of mathematical analysis, will determine the necessary parameters, such as resistance, fatigue, acceleration, elastic potential energy, direction of the forces, speed, elasticity, etc., in order to determine the state of the structure and to establish its useful life span. The system and procedure are comprised of a plurality of inclinometers (02-03-2011
20120004882SENSOR-BASED ORIENTATION SYSTEM - A method for measuring positional changes of an object, including rotation about any or all of three axes, using linear accelerometers. There is disclosed a method of using a linear accelerometer to integrate two 3D linear accelerometers in order to measure and supply for further use six-dimensional information, that is, translation in three dimensions and rotation about three axes. Two linear accelerometer sensors are used to determine all but rotation about an imaginary axis between the accelerometers. Output from a third accelerometer may be used to generate the data needed to determine rotation about the imaginary axis. The need for a gyroscope for detecting changes in heading (i.e., yaw or azimuth) may therefore be avoided.01-05-2012
20120004883ACTIVITY MONITORING SYSTEMS AND METHODS - An activity monitor, comprises housing for attachment to a person; at least one accelerometer disposed within the housing; and a processor disposed within the housing, for processing signals from the accelerometer to assess activity of the person. A method assesses activity of a person, including: sensing acceleration at a first location on the person; processing the acceleration, over time, to assess activity of the person; and wirelessly communicating information indicative of the activity to a second location.01-05-2012
20120004881APPARATUS AND METHOD FOR ESTIMATING WALKING STATUS FOR STEP LENGTH ESTIMATION USING PORTABLE TERMINAL - Walking status estimation in a portable terminal includes a method for estimating walking status. The method includes setting an observation using an estimated temporary step length, an acceleration variance, and a step frequency. The method also includes generating an observed probability vector comprising probabilities per walking status according to the observation. The method further includes determining final probabilities per walking status by multiplying the observed probability vector by at least one of an initial probability matrix and one or more status transition probability vectors. The method still further includes determining a walking status having the greatest final probability as a final walking status.01-05-2012
20110166821System and method for analysis of ice skating motion - A processing means and method for obtaining and processing movement data and/or orientation data from one or both ice skates, for an ice skater, while the ice skater is skating. The means and method further recite the use of historical data regarding preferred hockey skating techniques for comparison with the movement data and/or orientation data.07-07-2011
20120065926INTEGRATED MOTION SENSING APPARATUS - Provided is an integrated motion sensing apparatus that may calculate first motion information associated with a target object based on an intensity of a (infrared) (IR) light measured by at least one optical sensor, may calculate second motion information associated with the target object based on inertial information measured by at least one inertial sensor, and may estimate third motion information associated with the target object based on at least one of the intensity of the light, the first motion information, the inertial information, and the second motion information.03-15-2012
20120116710MOTION DETECTION DEVICE, ELECTRONIC DEVICE, MOTION DETECTION METHOD, AND PROGRAM STORAGE MEDIUM - A motion detection device includes: an acceleration detection unit, a separating unit, a gravity axis determination unit, and a motion detection unit. The acceleration detection unit detects acceleration components of each axis of a three-dimensional rectangular coordinate system of acceleration acting on the acceleration detection unit and outputs sets of acceleration component data. The separating unit separates the outputted sets of acceleration component data into stationary components and motion components. The gravity axis determination unit determines an axis whose separated stationary component is the largest to be a gravity axis. The motion detection unit detects, if an axis corresponding to a largest motion component showing a largest value of the separated motion components is an axis other than the determined gravity axis, a motion axis of the acceleration detection unit on the basis of the largest motion component.05-10-2012
20120016624DEVICE AND METHOD FOR CHARACTERIZING MOVEMENTS - The invention proposes a device and a method for characterizing movements performed by an object, notably a limb of a human being instrumented with at least one accelerometer. The invention is particularly useful for determining the direction, the line and the length of the steps of said human being. The invention uses algorithms for processing the signals from the sensor to make it possible to segment the steps by identifying the lifting and the landing of said limb by comparing the signals output from the sensor with thresholds, to determine the direction and the line of the step by comparing the maxima of the values of the signals along two axes substantially parallel to the walking plane and to calculate the length of the step by double integration of the signals according to the direction of the step. The invention is also applicable to hand movements that have trend characteristics similar to those of the steps.01-19-2012
20120016623Use of Multiple Internal Sensors for Measurement Validation - A microcontroller-based method and apparatus are described for measuring motions signals (01-19-2012
20120022824SENSING DEVICE AND ELECTRONIC APPARATUS - A sensing device with lower power consumption by controlling a rate for generating output data is to be provided. A sensing device includes: a sensor module including a group of sensors, at least one of which is set as a motion sensor; and a data generating unit that generates output data on the basis of outputs from the group of sensors. The data generating unit switches, on the basis of an output from the motion sensor, a rate for generating the output data.01-26-2012
20120022823ELECTRONIC COMPASS - A method for determining a null drift (Hx01-26-2012
20120059620METHOD AND APPARATUS FOR DETERMINING PHASE SENSITIVITY OF AN ACCELEROMETER BASED ON AN ANALYSIS OF THE HARMONIC COMPONENTS OF THE INTERFERENCE SIGNAL - The present invention relates to a method and apparatus for determining phase sensitivity of an accelerometer based on an analysis of the harmonic components of the interference signal, which can estimate phase lags of an accelerometer through an analysis of the interference signal obtained using a single photo-detector when the accelerometer moves in sinusoidal motion with an initial phase of vibration. The method comprises the steps of obtaining an interference signal in a time domain generated from a signal reflected by an accelerometer and a fixed mirror using a single photo-detector; transforming the interference signal in the time domain into a signal in a frequency domain including a plurality of harmonic signals by Fourier transform; and determining the phase sensitivity of the accelerometer using initial phase of vibration displacement of the accelerometer, which is included in the interference signal in the frequency domain.03-08-2012
20120158351SYSTEM AND METHOD FOR DETERMINING THE ACTIVITY OF A MOBILE ELEMENT - System for determining the activity of a mobile element (EM), includes at least one motion sensor (CM) having at least one measurement axis, which is provided with a fattener (MF) for securely connecting said motion sensor (CM) to the mobile element (EM). The system further includes a filter (FILT) for selecting, for each measurement axis of the motion sensor, high frequencies above a first threshold (S06-21-2012
20120209560HUMAN MACHINE INTERFACE DEVICE - A hand operated input device including: a series of activation points activated by the fingers of a user; a motion sensor measuring a current orientation of the users hand and a processing means interconnected to the activation points and the motion sensors for output in a substantially continuous manner a series of currently active activation points and the current position and orientation of the input device.08-16-2012
20120072165SYSTEM AND METHOD FOR OBSERVING THE SWIMMING ACTIVITY OF A PERSON - A system for observing a swimming activity of a person includes a waterproof housing (BET) having a motion sensor (MS), and is furnished with fixing means (BEL) for securely fastening the housing (BET) to a part of the body of a user. The system has analysis means (AN) for analyzing the signals transmitted by the motion sensor (MS) to at least one measurement axis and which are adapted for determining the type of swimming of the user as a function of time by using a hidden Markov model with N states corresponding respectively to N types of swimming.03-22-2012
20120072164EXERCISE MODE AUTOMATIC IDENTIFICATION METHOD - An exercise mode automatic identification method is provided. The automatic identification method includes the following steps. A step count taken by a user is obtained. A horizontal transient speed at which the user moves at the end of a predetermined period is obtained. The user's exercise mode is defined by a microprocessor according to the step count and the horizontal transient speed.03-22-2012
20120123733METHOD SYSTEM AND COMPUTER READABLE MEDIA FOR HUMAN MOVEMENT RECOGNITION - A method for human movement recognition comprises the steps of: retrieving successive measuring data for human movement recognition from an inertial measurement unit; dividing the successive measuring data to generate at least a human movement pattern waveform if the successive measuring data conforms to a specific human movement pattern; quantifying the at least a human movement pattern waveform to generate at least a human movement sequence; and determining a human movement corresponding to the inertial measurement unit by comparing the at least a human movement sequence and a plurality of reference human movement sequences.05-17-2012
20080306706Accelerometer System - An accelerometer system comprises an accelerometer, a processor or threshold system connected to the accelerometer to receive electronic signals from accelerometer indicating acceleration and an annunciator connected to the processor or threshold system to receive electronic signals indicating the magnitude of acceleration. The annunciator produces a human discernable signal to notify of acceleration levels. The accelerometer system alerts vehicle operators of acceleration levels. The accelerometer system may be used to train vehicle operators to drive in a manner that reduces excessive acceleration. One embodiment prolongs battery life by turning off components in between measurements based on acceleration activity. Another embodiment packages the accelerometer system to fit into a cigarette lighter plug for vehicle use.12-11-2008
20110125454IN FLIGHT DETECTION - An apparatus and method for detecting whether a mobile device is in flight based on sensor measurements from a 3-dimensional accelerometer are presented. For example, embodiments estimate a direction of gravity and non-gravity acceleration, separate this non-gravity acceleration into a vertical and horizontal components, then test the estimated accelerations to determine whether the mobile device is experiencing sufficient vertical acceleration to warrant an in-flight determination.05-26-2011
20120084047VEHICLE LOADING AND UNLOADING DETECTION - A system for determining vehicle loading and unloading comprises an acceleration detector provided on a vehicle, a location detector for detecting the location of the vehicle and a processor that receives information detected by the acceleration detector and location detector and determines whether the detected acceleration is due to vehicle loading, unloading or travel, based on the received information. A timer may be started, when vehicle loading or unloading is determined, such that the amount of time spent loading or unloading the vehicle may be obtained. Also, a condition of a traveled surface may be determined based on information received from the acceleration detector and location detector.04-05-2012
20120221290PORTABLE ELECTRONIC DEVICE ADAPTED TO PROVIDE AN IMPROVED ATTITUDE MATRIX - According to one aspect, a method of determining an attitude matrix on a portable electronic device. The method includes determining a first attitude matrix gradient using data from at least one of an accelerometer and a magnetometer, determining a second attitude matrix gradient using data from a gyroscope, fusing the first attitude matrix gradient and the second attitude matrix gradient based on a mixing coefficient to generate a fused gradient, and based on the fused gradient, updating a fine attitude matrix for the portable electronic device.08-30-2012
20120221289LOW AVERAGE VELOCITY PEDESTRIAL MOTION IDENTIFICATION - Systems and methods for identifying a motion state of a mobile device are disclosed. In one embodiment, identifying a motion state of a mobile device using acceleration signals from one or more accelerometers comprises: detecting any pedestrial steps associated with a user of the mobile device during an observation period based on the acceleration signals; determining a maximum number of consecutive pedestrial steps taken during the observation period from the detected pedestrial steps; and declaring a high average velocity motion state or a low average velocity motion state for the observation period based on the determined maximum number of consecutive pedestrial steps.08-30-2012
20120130671VIBRATION ISOLATION INTERPOSER DIE - In an example, an interposer chip is provided. The interposer chip includes a base portion and a chip mounting portion. The interposer chip also includes one or more flexures connecting the base portion to the chip mounting portion. Additionally, a first plurality of projections extends from the base portion towards the chip mounting portion, and a second plurality of projections extends from the chip mounting portion towards the base portion and extending into interstices formed by first plurality of projections.05-24-2012
20120166134COMBINING REDUNDANT INERTIAL SENSORS TO CREATE A VIRTUAL SENSOR OUTPUT - Included are embodiments for determining an inertial quantity. One embodiment of a method includes combining readings from a plurality of inertial sensors to produce an estimate of the value of an inertial quantity in a manner that is fault-tolerant, more accurate than traditional sensor arrangements, and able to handle non-linear and non-Gaussian systems. Embodiments of a method also include utilizing a Monte Carlo estimation-based inference system to adaptively combine the inertial sensor outputs into a fault-tolerant highly-accurate inertial quantity estimate, an axis-reversed-paired physical arrangement of inertial sensors to minimize effects of environmental and process noise, and cross-associating sensors to ensure good sensor associations and reduce the effects of sample impoverishment.06-28-2012
20120166133Electronic device, pedometer, and program - A device has three acceleration sensors, one that detects an acceleration in a first direction to output a first signal, another that detects an acceleration in a second direction, orthogonal to the first direction, to output a second signal, and a third that detects an acceleration in a third direction, orthogonal to a plane uniquely identified by the first and second directions, to output a third signal. A CPU obtains one or more signals from among the first, second, and third signals to detect a walk by using the obtained signals. The CPU determines a posture of the device on the basis of a moving average value of the first signals, a moving average value of the second signals, and a moving average value of the third signals. The CPU stops the walk detecting operation on the basis of a change of the determined posture.06-28-2012
20120130672MEMS VERTICAL COMB STRUCTURE WITH LINEAR DRIVE/PICKOFF - A MEMS sensor comprises a substrate and at least one proof mass having a first plurality of combs. The proof mass is coupled to the substrate via one or more suspension beams such that the proof mass and the first plurality of combs are movable. The MEMS sensor also comprises at least one anchor having a second plurality of combs. The anchor is coupled to the substrate such that the anchor and second plurality of combs are fixed in position relative to the substrate. The first plurality of combs are interleaved with the second plurality of combs. Each of the combs comprises a plurality of conductive layers electrically isolated from each other by one or more non-conductive layers. Each conductive layer is individually coupled to a respective electric potential such that capacitance between the combs varies approximately linearly with displacement of the movable combs in an out-of-plane direction.05-24-2012
20100204952Motion Analysis Device for Sports - There is described a portable wrist worn device for determining information about the movement of a human body when swimming. The device comprises a waterproof housing containing: an accelerometer operable to generate an acceleration signal; a processor operable to process the acceleration signal so as to generate one or more metrics relating to the movement of the human body; and a means for feedback of the one or more metrics to the user. The accelerometer may be operable to generate an acceleration signal along an axis parallel to the proximo-distal axis of the user's arm in use and/or the accelerometer may be operable to generate an acceleration signal along an axis parallel to the dorsal-palmar axis of the user's hand in use. The device may also be used in sports other than swimming.08-12-2010
20120136619COLLISION DETECTING METHOD, ELECTRONIC DEVICE, AND COMPUTER PROGRAM PRODUCT THEREOF - A collision detecting method, an electronic device, and a computer program product thereof are provided for the electronic device having an accelerometer, a positioning module, and a communication module. The method includes obtaining a plurality of acceleration variations within each of a plurality of sampling intervals respectively detected by the accelerometer. The method also includes transforming the corresponding acceleration variations into a plurality of frequency domain signals for each sampling interval, and calculating energy and entropy of the frequency domain signals. The method further includes determining a collision has occurred if the energy and the entropy corresponding to each of a plurality of specific sampling intervals among the sampling intervals both drastically increase then drastically decrease suddenly.05-31-2012
20120136620APPARATUS FOR DETERMINING THE POSITION OF A DEVICE - An apparatus and method are disclosed for use in a device, such as a handheld printer or scanner, having functionality that requires information of its position relative to an origin and initial orientation. The module includes two sensors to generate movement data indicative of movement direction and orientation changes of the device. The location and orientation of the device relative to the origin and initial orientation is derived based on the movement data. A handheld printer or scanner implementing the device may thus be moved in different directions across a media to print or scan images, text, or other objects.05-31-2012
20120136618SYSTEM AND METHOD FOR DETECTING AND MEASURING IMPACTS IN HANDHELD DEVICES USING AN ACOUSTIC TRANSDUCER - A system and method is provided for detecting and measuring impacts in a wireless device. The wireless device has a processor coupled to a memory and an acoustic transducer. The method comprises acquiring data from the acoustic transducer, the data acquisition including the processor taking samples of an electrical input signal supplied to an input of the processor by the acoustic transducer; saving the acquired data in the memory; detecting whether an impact has occurred; and halting data acquisition after the impact is detected.05-31-2012
20100174506System and Method for Determining an Attitude of a Device Undergoing Dynamic Acceleration Using a Kalman Filter - A system, a computer readable storage medium including instructions, and a method for determining an attitude of a device undergoing dynamic acceleration. A difference between a first accelerometer measurement received from a first multi-dimensional accelerometer of the device and a second accelerometer measurement received from a second multi-dimensional accelerometer of the device is calculated. A Kalman gain is adjusted based on the difference, wherein the Kalman gain is used in a Kalman filter that determines the attitude of the device. An attitude of the device is determined using the Kalman filter based at least in part on the Kalman gain, the first accelerometer measurement, the second accelerometer measurement, and a magnetic field measurement received from a multi-dimensional magnetometer of the device.07-08-2010
20120173189METHOD AND MODULE FOR MEASURING ROTATION AND PORTABLE APPARATUS COMPRISING THE MODULE - The invention discloses a method and a module for measuring rotation and a portable apparatus comprising said module. The module of the present invention is adapted for measuring rotation of a target, and the module includes a first sensor, a second sensor and a processor. The first sensor is disposed at a first location of the target, for sensing a first centripetal acceleration and a first tangential acceleration when the target is rotated. The second sensor is disposed at a second location of the target, for sensing a second centripetal acceleration and a second tangential acceleration when the target is rotated. The processor is coupled to the first sensor and the second sensor, for receiving the first centripetal acceleration and the first tangential acceleration from the first sensor, receiving the second centripetal acceleration and the second tangential acceleration from the second sensor, and calculating the rotation angle of the target accordingly.07-05-2012
20120173190INERTIAL SENSOR AIDED HEADING AND POSITIONING FOR GNSS VEHICLE NAVIGATION - An apparatus and method for providing an improved heading estimate of a mobile device in a vehicle is presented. First, the mobile device determines if it is mounted in a cradle attached to the vehicle; if so, inertia sensor data may be valid. While in a mounted stated, the mobile device determines whether it has been rotated in the cradle; if so, inertia sensor data may no longer be reliable and a recalibration to determine a new relative orientation between the vehicle and the mobile device is needed. If the mobile device is mounted and not recently rotated, heading data from multiple sensors (e.g., GPS, gyroscope, accelerometer) may be computed and combined to form the improved heading estimate. This improved heading estimate may be used to form an improved velocity estimate. The improved heading estimate may also be used to compute a bias to correct a gyroscope.07-05-2012
20120316823Ballistic missile phase categorization technique - A computer-implemented analysis method is provided for identifying a flight trajectory of a bogey relative to earth's surface. The method includes a first step of obtaining first and second altitudes and velocities of the bogey separated by a first time interval. The second step calculates a first difference between the first and second velocities divided by the first time interval to obtain an acceleration vector. The third step calculates an acceleration magnitude from the acceleration vector. The remaining steps characterize the vectors and magnitude to report whether the bogey represents a ballistic projectile in a particular phase of Boost, Apogee or Descent.12-13-2012
20100049468MOTION CAPTURE AND ANALYSIS - Motion capture and analysis is described, including a motion sensor unit configured to capture data associated with movement of an object, to process the data to determine one or more values, to store the data and the one or more values, and to convert the data and the one or more values from an analog signal to a digital signal associated with a wireless transmission, and a display unit configured to receive the data from the motion sensor unit, the data being transmitted using through the wireless transmission, to process the data to determine one or more values, to store the data, and to graphically present the data and the one or more values.02-25-2010
20100010771SENSOR FOR SENSING ACCELERATIONS01-14-2010
20100010770MEASURING DEVICE FOR VEHICLE DATA, IN PARTICULAR FOR THE SPEED OF A VEHICLE RUNNING ON WHEELS - A measuring device for measuring the speed of a vehicle running on wheels has a first sensor and a second sensor. The two sensors are arranged on the same wheel of a vehicle and rotate with this wheel. Both sensors are arranged in such a way that they measure forces which are each perpendicular to the axis of the wheel and at an angle to one another, and act on the same point. An evaluation device is provided to which the measured values of the two sensors are fed, with the evaluation device obtaining the acceleration of the vehicle in the direction of travel therefrom, and calculating the current vehicle speed from it.01-14-2010
20120253738INTEGRATED MOTION PROCESSING UNIT (MPU) WITH MEMS INERTIAL SENSING AND EMBEDDED DIGITAL ELECTRONICS - A module operable to be mounted onto a surface of a board. The module includes a linear accelerometer to provide a first measurement output corresponding to a measurement of linear acceleration in at least one axis, and a first rotation sensor operable to provide a second measurement output corresponding to a measurement of rotation about at least one axis. The accelerometer and the first rotation sensor are formed on a first substrate. The module further includes an application specific integrated circuit (ASIC) to receive both the first measurement output from the linear accelerometer and the second measurement output from the first rotation sensor. The ASIC includes an analog-to-digital converter and is implemented on a second substrate. The first substrate is vertically bonded to the second substrate.10-04-2012
20120253737STATUS SIMULATION TESTING SYSTEM AND METHOD - A status simulation testing method is for use in testing a portable device having at least one angular velocity sensor and includes positioning the portable device on an oblique plane; moving and flinging the portable device at an increasing velocity to enable the portable device to move at an acceleration and an angular velocity; generating a sensing value by the angular velocity sensor of the portable device; and determining whether a sensing operation of the angular velocity sensor of the portable device is functioning well according to the sensing value. Accordingly, the method not only simulates a usage status of the portable device, but also tests the sensor of the portable device quickly, consistently, and accurately. A status simulation testing system is further introduced.10-04-2012
20120226467Inertial Navigation Units, Systems, and Methods - Navigation units, systems, and methods for use in the context of personal navigation, and associated methods for initialization, navigation, assistance, and correction, all in the field of inertial navigation and related applications. The inertial navigation units, systems, and methods of the invention utilize multiple accelerometers to gather specific force data for improvement of the initialization, navigation, assistance, or corrective processes.09-06-2012
20120226468REDUCTION OF IMU/AP LINK REQUIREMENTS FOR SDI - A method, controller and system in accordance with various aspects of the present disclosure facilitate reduced energy consumption in a motion sensing device having an inertial measurement unit (IMU), with a strap down integration unit, and an application processing unit (AP). The system and method include sensing acceleration values and rotational values at the IMU and converting the sensed acceleration and rotational values into velocity and orientation increments by strap down integration. The velocity and orientation increments are stored in a first buffer at the IMU between updates to the AP. When an update request is received at the IMU from the AP over an interrupt link, the buffer contents are transmitted over a serial link from the IMU to the AP.09-06-2012
20120259578REST DETECTION USING ACCELEROMETER - Example methods, apparatuses, or articles of manufacture are disclosed herein that may be utilized, in whole or in part, to facilitate or support one or more operations or techniques for detecting a state of rest of a mobile communication device using, at least in part, output signals from an accelerometer.10-11-2012
20120232832Inertial Sensing With Spatially Distributed Sensor Array And Two Dimensional Data Processing - A spatially distributed MEMS inertial sensor array is designed to reduce or cancel measurement errors and to increase the signal detection accuracy. By combining the measurements from a pair of sensors having sensing axes in two different, non-orthogonal directions, the correlated error due to the environmental changes are cancelled or reduced and the uncorrelated random noise is also reduced by the square root of two. By sequentially sampling the sensor array in the time domain, the number of the ADC circuits can be largely reduced. A two dimensional signal processing method is used to process the sensor array output data, in order to further reduce the remaining errors. Namely, one dimension uses the outputs from multiple spatially distributed sensor sets and the other dimension is the time domain. The signal to noise ratio is increased by using the signal correlation in both the spatial domain and the time domain.09-13-2012
20120232833METHOD AND SYSTEM FOR MONITORING A THIN STRUCTURE - A method and a system for monitoring a thin structure foresee acquiring the acceleration signals emitted by a plurality of accelerometers associated with the structure, obtaining the frequency spectrum of such signals, detecting their frequency peaks and temporal variations to calculate, for each of the frequency peaks, an average value and a statistical value that define a range of frequency values. Subsequently, at predetermined time periods, the frequency peaks are detected and, with respect to each average value, it is verified whether the corresponding peak frequency is outside of the respective range of frequency values and an error signal is generated as a function of such verification. In this case, the error signal and the processed signals of the accelerometers are sent to a remote unit where the signals are analysed to determine the state of the structure and its past data and to evaluate whether it is necessary for it to have technical personnel intervention.09-13-2012
20130173206Elevator Rope Sway Estimation - A method determines a sway of an elevator rope during an operation of an elevator system. The method includes acquiring at least one measurement of a motion of the elevator rope during the operation of the elevator system; and determining the sway of the elevator rope connecting an elevator car and a pulley based on an interpolation between boundaries of the elevator rope based on the measurement of the motion.07-04-2013
20110004437TOUCH TRIGGER MEASUREMENT PROBE - A measurement probe, for a co-ordinate positioning apparatus such as a machine tool, is described that includes a stylus holder that is deflectably mounted to a probe housing. One or more sensors are provided for sensing deflection of the stylus holder relative to the probe housing. A processor is included for producing a trigger signal when the deflection sensed by the one or more sensors meets a trigger condition, such as a deflection threshold. The probe also includes an accelerometer for measuring acceleration of the measurement probe. The trigger condition applied by the processor is alterable, during use, in response to the acceleration measured by the accelerometer. In this manner, false triggering can be suppressed.01-06-2011
20110131005MOBILE RECORDING APPARATUS, BODY MOVEMENT MEASURING APPARATUS, INFORMATION PROCESSING APPARATUS, MOVEMENT PATTERN DETERMINING APPARATUS, ACTIVITY AMOUNT CALCULATING APPARATUS, RECORDING METHOD, BODY MOVEMENT MEASURING METHOD, INFORMATION PROCESSING METHOD, MOVEMENT PATTERN DETERMINING METHOD, ACTIVITY AMOUNT CALCULATING MET - In an automatic recording mode, an action sensor 06-02-2011
20120265481ACCELEROMETER SYSTEMS AND METHODS - An accelerometer system can include a sensor element comprising first and second proofmasses, the first proofmass accelerating in a first direction and the second proofmass accelerating in a second direction opposite the first direction in response to an external acceleration. A force rebalance controller applies control signals to at least one control element to provide a first force to accelerate the first proofmass toward a first null position and to at least one control element to provide a second force to accelerate the second proofmass toward a second null position. The force rebalance controller can also generate opposite polarity first and second output signals associated with respective displacements of the first and second proofmasses relative to the respective first and second null positions. An acceleration component calculates the external acceleration based on the first and second output signals.10-18-2012
20120265482DEVICE POSITION ESTIMATES FROM MOTION AND AMBIENT LIGHT CLASSIFIERS - A position estimate for a mobile device is generated using data from motion sensors, such as accelerometers, magnetometers, and/or gyroscopes, and data from light sensors, such as an ambient light sensor, proximity sensor and/or camera intensity sensor. A plurality of proposed positions with associated likelihoods is generated by analyzing information from the motion sensors and a list of candidate positions is produced based on information from the light sensors. At least one of the plurality of proposed positions is eliminated using the list of candidate positions and a position estimate for the mobile device is determined based on the remaining proposed positions and associated likelihoods. The proposed positions may be generated by extracting features from the information from the motion sensors and using models to generate likelihoods for the proposed positions. The likelihoods may be filtered over time. Additionally, a confidence metric may be generated for the estimated position.10-18-2012
20130185016Activity Points - Systems and methods are provided for calculating point values for users who participate in activities. An activity is first captured with a sensor. A processor classifies the activity by comparing a sensor signal to templates. Once the activity is classified, an activity factor is selected. Point values are then calculated as a function of the activity factor and duration of the activity.07-18-2013
20120323521SYSTEM AND METHOD FOR RECOGNIZING GESTURES - Systems and methods for recognizing the gestures of an entity, notably a human being, and, optionally, for controlling an electrical or electronic system or apparatus, are discussed. The system uses sensors that measure signals, preferentially representative of inertial data about the movements of said entity, and implements a process for enriching a dictionary of said gestures to be recognized and a recognition algorithm, for recognition among the classes of gestures in said dictionary. The algorithm implemented is preferably of the dynamic time warping type. The system carries out preprocessing operations, such as the elimination of signals captured during periods of inactivity of the entity, subsampling of the signals, and normalization of the measurements by reduction, and preferentially uses, to classify the gestures, specific distance calculation modes and modes for merging or voting between the various measurements by the sensors.12-20-2012
20120323522Method and an Apparatus for Monitoring an Characteristic of an Object in Mechaninal Contact with a Mobile Terminal - An apparatus comprising at least one processor and at least one memory including computer program code the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to perform, actuating within an apparatus a motion in at least one actuation direction, monitoring the motion in the apparatus in at least one monitoring direction, and determining from the monitoring an characteristic of an object in contact with the apparatus.12-20-2012
20120323520MOTION DETERMINATION - Described herein are systems and methods that can employ a motion detection algorithm to determine whether a sensor has experienced a motion event or a no motion event. The sensor can be any sensor that can be used to identify and/or characterize motion. Upon receiving a signal from the sensor, moments of the signal can be calculated. Then, the moments can be compared to determine whether the signal is Gaussian. If the signal is a Gaussian signal, the algorithm determines that the signal is due to a no motion event. If the signal is a non-Gaussian signal, the algorithm determines that the signal is due to a motion event.12-20-2012
20110238364Electronic apparatus and program - A calculation unit calculates a magnitude of acceleration in at least one of three separate directions and calculates a synthesized value indicating the magnitudes of the accelerations in the three directions based on the calculated magnitude of the acceleration and the acceleration in the direction separate from at least one of the directions.09-29-2011
20110238363Apparatus for Detecting Angular Velocity and Acceleration - An apparatus for detecting angular velocity and acceleration having diagnosing units for diagnosing the function of detecting angular velocity; diagnosing units for diagnosing the function of detecting acceleration; a diagnosing unit for a DSP or a MPU; multiple ROMs storing the same data; a diagnosing unit for the ROMs; a diagnosing unit for a RAM; a unit for outputting the outputs of the angular velocity sensor, the acceleration sensor and the results of diagnoses all together in response to an output command from an external device; and a unit for sending error detection codes along with the sensor outputs and the result of diagnoses when the sensor outputs and the results of diagnoses are outputted together.09-29-2011
20110276305METHOD AND SYSTEM FOR MODELLING ROTARY ACCELERATIONS OF A VESSEL - Method and system for modeling angular accelerations of a vessel, so that forces/accelerations in real time and with a high degree of accuracy can be transformed to any other point on the vessel or in the vicinity of the vessel, provided that the vessel can be considered as a rigid body and that the vessel does not perform loops or rolls as a part of its general movement pattern.11-10-2011
20110276304DETERMINING ENERGY EXPENDITURE OF A USER - The invention relates to an electronic device for estimating energy consumption of a person. The electronic device uses a mathematical model based on acceleration data for estimating the person's energy consumption as a function of the actual performed activity and acceleration values. The acceleration values are converted to an estimate of energy consumption of a given activity by scaling a value of time integrated acceleration data with an activity scaling parameter. The activity scaling parameters for different activities have been determined off-line by comparing measured energy consumptions over e.g. a day with estimated energy consumptions over the same period, where the estimated values are determined using the mathematical model.11-10-2011
20110276303METHOD FOR OPTIMISING A MEASUREMENT CYCLE - A method is described for calculating an optimum stand-off distance for surface position measurements to be acquired by a coordinate positioning apparatus including a measurement probe. The coordinate positioning apparatus may include a machine tool and the measurement probe may include a touch trigger probe having a deflectable stylus. The method includes the step of calculating an optimum stand-off distance using at least one measured acceleration characteristic of the coordinate positioning apparatus. In this manner, measurement cycle times may be optimised.11-10-2011
20120101771WALKING POSTURE DETERMINATION APPARATUS - In a pedometer serving as a walking posture determination apparatus, horizontal-axis acceleration data is synchronized with and superimposed on vertical-axis acceleration data so as to extract vertical-axis acceleration in a right foot walking period and vertical-axis acceleration in a left foot walking period. Then, the difference YR−YL between the maximum amplitude YR of right foot acceleration and the maximum amplitude YL of left foot acceleration, or the ratio YR/YL therebetween is calculated as an index value to be used in a stride length determination. The pedometer then references pre-stored associations between index values and stride length levels, and determines the stride length level associated with the calculated index value to be the stride length level of the measurement subject.04-26-2012
20120101770FALL DETECTION - A fall detection device may be uniquely associated with a wearer. The fall detection device may predict whether a fall event is imminent based on kinematic information of the wearer's body. The device may also confirm whether the wearer actually experienced a fall event based on additional kinematic information.04-26-2012
20120290252Determining GPS Mode of Operation Based Upon Accelerometer Input - An electronic device is operable to determine a Global Positioning System (GPS) mode of operation based upon accelerometer input. The electronic device includes a communications interface, a GPS receiver, an accelerometer module, and processing circuitry. The processing circuitry receives an accelerometer output from the accelerometer module and compares the accelerometer output to a plurality of acceleration signatures. Based upon the comparison, an acceleration profile is selected. A GPS mode of operation is selected for the GPS receiver based upon the acceleration profile. The acceleration profile can be selected based upon one or more types of communications being serviced by the communications interface. In one embodiment, a selected GPS mode of operation selected corresponds to a distinct operating environment.11-15-2012
20130013249STATE DETECTING DEVICE, ELECTRONIC APPARATUS, PROGRAM AND STATE DETECTING METHOD - A state detecting device includes an acquisition unit which acquires an x-axis component, a y-axis component and a z-axis component of an acceleration signal from an acceleration sensor, and an arithmetic unit which performs arithmetic processing. The arithmetic unit calculates a coordinate transformation matrix for finding an acceleration component in horizontal direction, from an average value of the x-axis component, an average value of the y-axis component and an average value of the z-axis component acquired by the acquisition unit, and discriminates between a first state where a person is in a first type of vehicle and a second state where the person is in a second type of vehicle that is different from the first type, based on the coordinate transformation matrix that is calculated and a first indicator value obtained from the x-axis component, the y-axis component and the z-axis component.01-10-2013
20110161043Method and Device for Determining a State of Motion of a Vehicle Comprising an Acceleration Sensor - To determine a state of motion of a vehicle comprising an acceleration sensor, a vibration signal is determined as a function of a measurement signal of the acceleration sensor. The vibration signal is representative of vibrations of the vehicle. A determination is made as to whether the vehicle is at a standstill or whether the vehicle is moving, such determination made by comparing the vibration signal with at least one pre-determined threshold value.06-30-2011
20110161042Hinged Device With Multiple Accelerometers - Apparatus, systems and methods for determining relative spatial orientation of a first member and a second member connected by one or more hinges are provided. A first member having one or more first accelerometers disposed therein can provide a first signal proportionate to the acceleration of the first member along one or more axes. A second member having one or more second accelerometers disposed therein can provide a second signal proportionate to the acceleration of the second member along one or more axes. One or more hinges can pivotably connect the first and second members. A controller can receive the first signal provided by the one or more first accelerometers and the second signal provided by the one or more second accelerometers to calculate the spatial orientation of the first member with respect to the second member.06-30-2011
20130173207Miniaturized Inertial Measurement Unit and Associated Methods - An inertial measurement unit includes a base having a plurality of physically distinct sectors, upon which are positioned thereon groups of orthogonally oriented angle rate sensors, each group positioned on a different sector of the base. High-G and Low-G orthogonally oriented accelerometers are also positioned on the base. A processor is positioned on the base having software resident thereon for receiving signals from the angle rate sensors and the accelerometers. Software is also resident on the processor for calculating from the received signals one or more of the following: a change in attitude, a change in position, a change in angular rate, a change in velocity, and a change in acceleration of the unit over a plurality of finite time increments.07-04-2013
20130173208ROAD SURFACE INSPECTION DEVICE AND RECORDING MEDIUM - The road surface inspection process includes acquiring, calculating, and determining. The acquiring includes acquiring a deterioration candidate position at which a deterioration candidate of a road surface is detected by a process of detecting an abnormality on the road surface of a road. The calculating includes calculating a frequency at which an acceleration outside an allowable range is measured at the deterioration candidate position by referring to an acceleration at a measurement position corresponding to the deterioration candidate position among the accelerations stored in a driving data storage. The determining includes determining, when the calculated frequency is equal to or greater than a predetermined threshold value, that the deterioration candidate position at which the frequency is calculated is a position at which the road surface is deteriorated.07-04-2013
20130173209ACCELERATION SIGNAL PROCESSING DEVICE - In an acceleration sensor, it has been difficult to realize a circuit which has no current consumption at all during OFF of a system and is capable of activating a sensor main body when applied with vibration. Provided is an acceleration switch having one terminal connected to one of a positive power supply or a negative power supply, and another terminal connected to an interrupt input terminal of a microcomputer.07-04-2013
20080249736Multi-Mode Acceleration-Based Athleticism Measurement System - A multi-mode athleticism movement measurement system includes an athlete-borne acceleration sensor and an athleticism processing device to determine athleticism information based upon one or more timing measurements from the athlete-borne acceleration sensor, the athleticism information corresponding to any of multiple athleticism measurement modes available on athleticism processing device and selectable by a user. A data link between the athlete-borne acceleration sensor and the athleticism rating processing device transmits the one or more timing measurements from the athlete-borne acceleration sensor to the athleticism rating processing device.10-09-2008
20100088061GENERATING VIRTUAL BUTTONS USING MOTION SENSORS - An implementation of a system and method for using sensors such as one or more gyroscopes and/or accelerometers to sense input is provided. For example, one or more of such sensors may be use to provide virtual buttons at various areas on the housing of a mobile device, detect a force against the housing, or to detect relative movement of the mobile device.04-08-2010
20130138388MULTIPLE METER DETECTION AND PROCESSING USING MOTION DATA - Systems and methods are disclosed for identifying users of portable user devices according to one or more accelerometer profiles created for a respective user. During a media session, the portable computing device collects media exposure data, while at the same time, collects data from the accelerometer and compares it to the user profile. The comparison authenticates the user and determines the physical activity the user is engaged in. Additional data may be collected from the portable computing device to determine one or more operational conditions of the device itself, including the detection of multiple devices being physically carried by one user. Gross motion strings may also be generated by devices and compared to see if strings match, thus suggesting multiple devices are being carried by one user.05-30-2013
20130138387METHOD AND SYSTEM FOR OBJECT LOCATION DETECTION IN A SPACE - A method and system for object location detection in a space, the method including the steps of: configuring the resolution of a multi dimensional sensing apparatus to divide a multi dimensional space into M first sub spaces; scanning the multi dimensional space to generate M first sensed data and at least one first locked space; configuring the resolution of the multi dimensional sensing apparatus to divide each of the at least one first locked space into N second sub spaces; scanning the at least one first locked space to generate at least one group of second sensed data and at least one second locked space; and combining at least one of the M first sensed data that corresponds to the at least one first locked space, with the at least one group of second sensed data to form a set of output sensed data.05-30-2013
20130138390WALKING DIRECTION DETECTION DEVICE AND WALKING DIRECTION DETECTION METHOD - Provided is a walking azimuth detection device capable of quickly and accurately detecting a walking azimuth at the start of walker's walking. The device (05-30-2013
20130138389APPARATUS AND METHOD FOR DETECTING DISEASE IN DAIRY ANIMALS - Disclosed is apparatus and a method for detecting udder disease in dairy animals. An accelerometer is attached to each of a plurality of dairy animals. A processor determines a measure of the activity of the dairy animals to which the accelerometers are attached. Data is recorded by and automatically transmitted from a sensor unit secured to an animal, without the requirement for costly and time consuming chemical analysis of milk, or of visual or veterinary inspection of individual animals in a herd. The development of an udder disease in a dairy animal, such as mastitis, may be identified from a decrease in the monitored measure of activity of a dairy animal. A separate baseline measure of activity may be determined for each dairy animal and the ac tivity of a plurality of dairy animals in one or more herds may be taken into account, in order to reduce false positives due to external effects which are not specific to a single dairy animal.05-30-2013
20130096867Vehicle Stability Systems and Methods - Systems and methods for determining angular velocity of a vehicle. Systems include an array of accelerometers and a computing unit configured to determine angular velocity as a function of acceleration measured by the array of accelerometers. Angular velocity can then be used, for example, by stability systems to control the vehicle.04-18-2013
20130179113METHOD OF SAMPLING ACCELERATION MEASUREMENTS OF A MOTOR VEHICLE WHEEL - A method of sampling acceleration measurements of a wheel (07-11-2013
20130103343COMBINED ORBIT AND ATTITUDE DETERMINATION SYSTEM AND METHODS - A system and methods for calculating an attitude and a position of an object in space are disclosed. Measurements in relation to an object, stars, and a signal timing are received at a combined orbit and attitude determination system to provide received measurements. An estimated separation angle error, an estimated position error, and an estimated attitude error are estimated based upon the received measurements to provide estimated errors.04-25-2013
20130124138CRASH DETECTION APPARATUS AND METHOD - A crash detection apparatus includes a crash detection unit and first, second, and third acceleration sensors which are installed at different positions of the object whose crash is to be detected. The crash detection unit calculates expectation acceleration of the third acceleration sensor based on measurement information obtained by the first acceleration sensor and the second acceleration sensor, compares the expectation acceleration with a measured acceleration measured by the third acceleration sensor, and detects whether a shape of the object has been deformed or not.05-16-2013
20110313716INTERTIAL TRACKING SYSTEM WITH PROVISION FOR POSITION CORRECTION - A subject location tracking process is provided that includes the attachment of a system to a subject where the system includes a radiofrequency sensor integration module, an inertial tracking module, and a microprocessor. Radiofrequency signals are communicated from the radiofrequency sensor integration module to a remote radiofrequency transceiver beacon. A measured range is determined between the radiofrequency sensory integration module and the beacon. An error value E is then computed between the measured range and a predicted range. The predicted range is computed from the inertial tracking module alone based on positional data as to location and orientation of the system. The location data of the subject is determined with a microprocessor and displayed at the location. The present invention operates to provide a high degree of accuracy as to the position of a subject in spite of intermediate obstructions and without reliance on global position satellite systems, fixed reference signals, or line of sight.12-22-2011
20110313715MULTI CHANNEL ELECTRONIC ACCELERATION SWITCH - An electronic acceleration switch, such as for arming and firing a squib, for instance used in arming a warhead, safe missile air, ground and sea launch separation arming, includes multiple redundancies to provide a fail-safe system that does not have a single-point failure. The switch includes different channels, each of which includes a power subsystem, multiple accelerometers, a pair of controllers, and a switching circuit. The power subsystems of the two channels provide power to multiple accelerometers of each channel. The accelerometers of each channel may include a mix of digital and analog accelerometers. The acceleration sensors can be either one-axis or three-axis sensors. The accelerometers are connected to the controllers of both channels. The controllers provide redundancy for each channel. In addition, the controllers include voting logic that receives inputs from the accelerometers, and determines whether to send arm and enable signals to the multiple squib drivers.12-22-2011
20130179112ROBUST METHOD FOR SIGNAL SEGMENTATION FOR MOTION CLASSIFICATION IN PERSONAL NAVIGATION - A method to accurately detect true peaks and true valleys in a real-time incoming signal is provided. The method includes segmenting the real-time incoming signal into short-time intervals; determining an initial estimated frequency by fast Fourier transforming data in the short-time intervals, setting a sliding window width based on the initial estimated frequency, determining at least one peak data element or valley data element based on analysis of the real-time incoming signal within a first sliding window; and determining at least one peak data element or valley data element based on analysis of the real-time incoming signal within a second sliding window. A first portion of the second sliding window overlaps a second portion of the first sliding window.07-11-2013
20110213582FEATURE TRANSFORMATION APPARATUS AND FEATURE TRANSFORMATION METHOD - A feature transformation apparatus recognizes activities of subjects in adaptation to each individual and improves recognition accuracy. The feature transformation apparatus includes a section that acquires respective prescribed activity data of one or more reference individuals and a subject when the one or more reference individuals and the subject perform a prescribed activity. A section extracts a reference individual feature of the one or more reference individuals and a subject feature of the subject. A calculation section calculates at least one standard feature based on the one or more reference individual features. A transform matrix between the standard feature and the subject feature is calculated. Recognition object activity data is acquired when the subject performs a recognition object activity. A recognition object feature of the subject is extracted from the recognition object activity data. The recognition object feature is transformed using the transform matrix.09-01-2011
20130151193METHOD AND APPARATUS FOR DETERMINING MOTION EXPLOSIVENESS - A method and apparatus for determining motion explosiveness is described herein. In some configurations, a system is provided that includes a display, an inertial sensor operable to generate signals corresponding to user motion; and a processing system in communication with the inertial sensor and the display. The processing system is operable to calculate a histogram representing the sensed user motion, the histogram providing an indication of motion explosiveness, and communicate with the display to present the indication of motion explosiveness on the display.06-13-2013
20130158940VESTIBULAR DYNAMIC INCLINOMETER - A method of determining orientation parameters of a rigid body (06-20-2013
20130158939METHOD AND COMPUTER-READABLE STORAGE MEDIUM FOR FITTING TENNIS RACKET AND ANALYSIS DEVICE - A tennis racket fitting method according to the present invention comprises: a first step of preparing a plurality of test tennis rackets, at least one type of racket property that influences swing for hitting a ball being defined for each of the test tennis rackets; a second step of causing a reference tennis racket to be swung at least one time by a user in order to hit a tennis ball, and acquiring a measured value by measuring transition in at least one of the position, the velocity, the acceleration, and the angular velocity of the reference tennis racket in at least a portion of an interval from when the swing starts until when the swing ends; a third step of calculating at least one evaluation indicator to be an evaluation of the swing of the reference tennis racket based on the measured value; and a fourth step of, based on the racket property, selecting a tennis racket that can improve at least one evaluation indicator from among the test tennis rackets.06-20-2013
20130158941MOVING DIRECTION DETERMINATION WITH NOISY SIGNALS FROM INERTIAL NAVIGATION SYSTEMS ON MOBILE DEVICES - Aspects of the present disclosure relate generally to indoor localization, for example, where GPS or other localization signals are unavailable. More specifically, aspects relate to using inertial navigation systems (06-20-2013
20130158938PORTABLE ELECTRONIC DEVICE, STORAGE MEDIUM AND METHOD FOR REPORTING LOCATION OF THE PORTABLE ELECTRONIC DEVICE - In a method for reporting a location of a portable electronic device, an acceleration of the portable electronic device is detected via an accelerometer of the portable electronic device. The portable electronic device is determined as falling when a difference between the acceleration of the portable electronic device and an acceleration of gravity is in a predetermined range. An angular velocity of the portable electronic device is detected via a gyroscope of the portable electronic device when the portable electronic device is determined as falling. The portable electronic device is determined as static when the angular velocity of the portable electronic device equals zero. If the portable electronic device is static for a predetermined time period, location information of the portable electronic device is collected from a global position system receiver of the portable electronic device. The location information is sent to a target electronic device.06-20-2013
20130185015SYSTEM AND METHOD OF DETERMINING THE ANGULAR POSITION OF A ROTATING ROLL - A method of determining the angular position of a roll includes: (a) detecting signals generated by an accelerometer attached to an end of a rotating roll; (b) determining whether a signal generated in step (a) has reached a pre-trigger threshold, and repeating step (a) if the signal has not reached the pre-trigger threshold; (c) if the signal is determined in step (b) to have reached the pre-trigger threshold, detecting a subsequent signal generated by the accelerometer; (d) determining whether the signal detected in step (c) has reached a trigger threshold, and repeating step (c) if the signal has not reached the trigger threshold; and (e) if the signal has reached the trigger threshold, establishing the angular position of the roll based on the signal that has reached the trigger threshold.07-18-2013
20130191068HEAD TRACKING SYSTEM - The invention relates to a head tracking system that determines an absolute head position of a user's head. The head tracking system comprises a first positioning system and a second positioning system. The first positioning system comprises a reference unit that is fixedly installed remote from the head and defining a first coordinate system. The first positioning system further comprises a positioning unit attached to the head and configured to communicate with the reference unit to establish position data including indicators indicating a head position in the first coordinate system when the positioning unit is within a field of view of the reference unit. The second positioning system comprises a digital compass attached to the head and configured to establish second position data including indicators indicating a head position in a second coordinate system. The head tracking system further comprises a head position determining module configured to determine the absolute head position based on at least one of the first position data and the second position data.07-25-2013
20130191067Systems and Methods for Reliable Motion Control of Virtual Tour Applications - The present invention relates to systems and methods for reliably detecting motion control of mobile devices executing virtual tour applications. In one embodiment, a computerized mobile device reliably detects angular rotations. The mobile device includes a magnetometer for generating directional values representing the respective angular rotations. The mobile device detects abrupt change(s) in additional directional values relative to the prior directional values, and if an abrupt change in an additional directional value is detected, then an appropriate weight is assigned to the additional data value. In addition to generating directional values, the magnetometer may also generate corresponding magnitude values. The mobile device evaluates the corresponding magnitude values and if an amplitude of a magnitude value is greater than a threshold, then the mobile device decreases a confidence value associated with the corresponding directional value.07-25-2013
20120029866RELOCATION DETECTION METHOD AND RELOCATION DETECTION UNIT - A relocation detection unit includes: an acceleration sensor adapted to detect acceleration generated in the apparatus, an arithmetic section adapted to obtain a first calculation value by performing Nth-order integration on detected value of the acceleration sensor at a predetermined timing, wherein N is a predetermined positive integer, a correction section adapted to obtain a second calculated value by adding/subtracting a specific value to/from the first calculation value at the predetermined timing, and a detection section adapted to detect that the apparatus has been relocated if the second calculated value exceeds a preset reference value.02-02-2012
20120029865METHODS FOR BEHAVIOR PATTERN ANALYSIS - Disclosed is a method for behavior pattern analysis, in which the behavior signals of a subject are continuously detected using tri-axis accelerator, and the behavior signals are divided as a plurality of time windows based on a predetermined time length. The plurality of time windows are configured as an X-Y matrix, and cross analysis is performed on the time windows as X-axis and Y-axis to obtain a plurality of correlation coefficients as being the preferred correlation values. A pattern with bright spots and dark spots is plotted according to the preferred correlation values, and behavior pattern is evaluated from the number and distribution of bright spots and the pattern. The behavior consistency of a subject can be efficiently evaluated, and his/her behavior abnormality, disease development or other situations can be determined accordingly.02-02-2012
20130197857GPS-CALIBRATED PEDOMETER - A system is provided that is configured to be transported, carried or worn by a user, such as a portable personal training device or sports watch. The system comprises a global navigation satellite system (GNSS) receiver arranged to obtain the location and/or speed of the user and a pedometer for counting steps made by the user. Data from the GNSS receiver is used to calibrate the pedometer each time the user is determined to travel a distance greater than a predefined distance value during a period of time in which signals obtained by the GNSS receiver meet the one or more accuracy and/or reliability criteria.08-01-2013
20130204571VIBRATING BEAM ACCELEROMETER - Systems and methods for improving common mode cancelation in a vibrating beam accelerometer (VBA) by using multiple resonant modes. The VBA includes two double-ended tuning forks (DETF). Additional oscillators drive the DETFs into the extra resonant modes. This increases common mode rejection from two modes to four modes. In addition the scale factor of the additional mode may provide a greater scale factor than prior designs.08-08-2013
20130204572STATE DETECTION DEVICE, ELECTRONIC APPARATUS, AND PROGRAM - A state detection device includes a horizontal direction component extracting unit that obtains a horizontal direction component of acceleration detected by an acceleration sensor and a movement direction calculating unit that calculates a movement direction on the basis of the horizontal direction component. The movement direction calculating unit performs a process of extracting a DC component for movement direction information which is obtained on the basis of the horizontal direction component to calculate the movement direction.08-08-2013
20120078570MULTIPLE ACCELEROMETER SYSTEM - Systems and methods for approximating angular velocity using a plurality of accelerometers are disclosed. In particular, in one embodiment, a method of approximating angular velocity including receiving linear acceleration information from a plurality of accelerometers and calculating a relative acceleration for at least one pair of the plurality of accelerometers is disclosed. The method includes obtaining a distance value for the at least one pair of the plurality of accelerometers and approximating the angular velocity by multiplying the distance value by the relative acceleration to obtain.03-29-2012
20120095722FALL PREVENTION - There is provided a method of determining a fall risk of a user, the method comprising collecting measurements of the motion of the user, estimating a value for a parameter related to the gait of the user from the measurements, and determining a fall risk for the user from a comparison of the estimated value with a normal value for the parameter determined from motion of the user in which the user is at their normal risk of falling.04-19-2012
20120095721ACCELEROMETER BASED ON THE MEASUREMENT OF CASIMIR FORCE FLUCTUATIONS - An accelerometer based on the measurement of Casimir force fluctuations is described. The accelerometer comprises a sealed housing containing a vacuum or a liquid, a piezoelectric plate fixed with the sealed housing, and a mass moveable within the sealed housing located in proximity to the piezoelectric plate. The moveable mass and the piezoelectric plate each have conductive surfaces which are located from each other at a distance which creates a Casimir Effect between the movable mass and the piezoelectric plate. Fluctuations in acceleration of the moveable mass cause fluctuations in the Casimir force on the piezoelectric plate. The acceleration fluctuations cause fluctuations in an electric output of the piezoelectric plate. The fluctuations in electric output are measured and used to calculate an acceleration and direction of movement of the accelerometer or a host device in which the accelerometer is carried.04-19-2012
20130211773METHOD AND APPARATUS FOR SENSING A HORSE'S MOODS - In a method for sensing a horse's moods, in which multiple sensors sense physical parameters of the horse and a statement on the horse's well-being is derived from said measured values, the position of at least one ear is sensed by a sensor, and a statement reflecting the horse's mood in a differentiated manner on the basis of body language-related signals is output.08-15-2013
20130211772BELT-MOUNTED MOVEMENT SENSOR SYSTEM - A belt-mounted movement sensor system apparatus has a flexible belt shaped to be worn around the midsection of the user. The system has an array of accelerometers disposed on or within the flexible belt to physically associate with positions on the midsection of the user. Each array of accelerometers has a sample rate that can be configured for sensing body movement during a movement activity. A power source and a data collection system are operably connected to the array of accelerometers. The data collection system has a means for receiving data from the array of accelerometers and processing that data into a storable format.08-15-2013

Patent applications in class Accelerometer