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Vibration detection

Subclass of:

702 - Data processing: measuring, calibrating, or testing


702033000 - Mechanical measurement system

Patent class list (only not empty are listed)

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20130030728CRYSTALLINITY EVALUATION METHOD, CRYSTALLINITY EVALUATION DEVICE, AND COMPUTER SOFTWARE THEREOF - A crystallinity evaluation method of evaluating crystallinity of a semiconductor film formed above a substrate includes following steps. First, a peak waveform of a Raman band in a Raman spectrum of the semiconductor film is obtained using Raman spectrometry. The Raman band corresponds to a phonon mode unique to the semiconductor film. The peak waveform is a wavelength range having a peak of the Raman band. Next, a first waveform is generated by fitting the obtained peak waveform by Gauss function. Then, a peak value of the first waveform is extracted. Then, a second waveform is generated by fitting the obtained peak waveform by Lorenz function based on the extracted peak value. Then, a peak value, a FWHM, and/or a wavelength indicating the peak value regarding the generated second waveform are obtained. Then, crystallinity of the semiconductor film is evaluated based on the obtained information.01-31-2013
20130030726CIRCUITRY FOR MEASURING AND COMPENSATING PHASE AND AMPLITUDE DIFFERENCES IN NDT/NDI OPERATION - Disclosed are a method and an NDT/NDI inspection device deploying digital circuitry to conduct detection and compensation of phase and amplitude shift in responding signals. A digital waveform generator, such as a direct digital synthesizer (DDS) is used to generate a digital sine-wave of a specific frequency and amplitude, mimicking the pulser frequency and amplitude. The sine-wave is converted to analog signal through a DAC and transmitted to the transducer. The received analog sine-wave from the transducer is converted back to a digital signal through an ADC. The transmitted and received digital signals are then compared for phase and amplitude differences. A null circuit involving another waveform generating component is employed to compensate the detected phase and amplitude differences. As a result the phase and amplitude differences are effectively eliminated before being further processed and analyzed for defects information.01-31-2013
20130030725MONITORING OPERATIONAL CONDITIONS OF A CARGO SHIP THROUGH USE OF SENSOR GRID ON INTERMODAL CONTAINERS - A computer-implemented method, system, and/or computer program product monitors operational conditions of a cargo ship. A baseline composite vibration pattern is established from readings generated by multiple smart sensors. Each of the multiple smart sensors is a uniquely-identified smart sensor that has been affixed to one of multiple intermodal shipping containers that have been loaded onto a cargo ship, and each smart sensor includes a vibration sensor for detecting mechanical vibration. Subsequent readings are then taken from the multiple smart sensors to generate a new composite vibration pattern. In response to the new composite vibration pattern being different from the baseline composite vibration pattern, the new composite vibration pattern is matched with a known composite vibration pattern in order to identify a cause of the new composite vibration pattern.01-31-2013
20130030727Floating Ultrasonic Transducer Inspection System and Method for Nondestructive Evaluation - A method for inspecting a structural sample using ultrasonic energy includes positioning an ultrasonic transducer adjacent to a surface of the sample, and then transmitting ultrasonic energy into the sample. Force pulses are applied to the transducer concurrently with transmission of the ultrasonic energy. A host machine processes ultrasonic return pulses from an ultrasonic pulser/receiver to quantify attenuation of the ultrasonic energy within the sample. The host machine detects a defect in the sample using the quantified level of attenuation. The method may include positioning a dry couplant between an ultrasonic transducer and the surface. A system includes an actuator, an ultrasonic transducer, a dry couplant between the transducer the sample, a scanning device that moves the actuator and transducer, and a measurement system having a pulsed actuator power supply, an ultrasonic pulser/receiver, and a host machine that executes the above method.01-31-2013
20110178737USER INTERFACE SYSTEM AND METHOD FOR DIAGNOSING A ROTATING MACHINE CONDITION NOT BASED UPON PRIOR MEASUREMENT HISTORY - A vibration data collection and rotating machinery fault diagnostic instrument includes a machine setup engine, a measurement engine, a diagnostic engine, a measurement user interface module, a machine setup user interface module, and a diagnostic user interface module. The machine setup engine requests and receives parameters about the machinery through the machine setup user interface module. The measurement engine requests and receives sensor placement locations through the measurement user interface module and keeps track of locations that have been measured and locations that still need to be measured. The diagnostic engine diagnoses machinery faults and presents the information to the user through the diagnostic user interface module using an intuitive graphical severity scale.07-21-2011
20100161254DETECTING OBJECTS IN SHIPPING CONTAINERS BY VIBRATION SPECTRAL ANALYSIS - Objects in a cargo shipping container are detected by measuring vibration resonant frequency peaks of the container. The mass of an object on the floor of the container effects the vibration resonance of the container, enabling the object to be detected. A vibration source and a plurality of accelerometers are either attached to the steel structure of the container, or are disposed on a supporting structure, such as a cargo crane or lift, so that they contact the container. The vibration source causes the container to vibrate, and the accelerometers detect the vibration resonance of the container. A mismatch between a cargo manifest and an observed cargo, or detection of an object having relatively high mass, e.g., due to lead shielding, can justify a manual inspection. The process uses synchronous processing to achieve the sensitivity needed, is unobtrusive, and does not slow the flow of cargo through a facility.06-24-2010
20090192734CORN HEAD CLUTCH MONITOR - A system for determining slippage of row unit or chopping unit slip clutches of a corn head includes a microcomputer coupled to at least one vibration sensor and a display or aural annunciator. A slipping clutch or group of clutches including a slipping clutch may be identified by recognizing a speed dependent predominant frequency. A slipping clutch or group of clutches including a slipping clutch may be identified by comparing magnitudes or times of receipt of vibrations from a pair of sensors. A slipping clutch or group of clutches including a slipping clutch may also be identified by comparing vibrations received from a single sensor with known location identifying magnitudes07-30-2009
20100076703Method and Apparatus for Monitoring Blade Vibration With A Fiber Optic Ribbon Probe - A method and apparatus for monitoring blade vibrations in a turbine engine having blade tip target portions associated with blades. An illumination conduit including a plurality of optical fibers conveys light from a light source to a transmission end of the optical fibers where the light is focused to define an axially elongated projected image. The blade tip target portions pass through the projected image and reflect light to receptor ends of a plurality of optical fibers defining a detection conduit for conveying the reflected light to a processor. The transmission ends and receptor ends of the optical fibers are configured as a narrow rectangle to define a probe end for receiving reflected light at different axial locations along the probe end, and to detect blade passing events defined by passage of either or both a blade leading edge and a blade trailing edge.03-25-2010
20120245867METHOD AND APPARATUS FOR DETECTION OF SHORT STRESS WAVES - Systems, apparatuses, and methods for measuring microscopic vibration of machines, which include the use of a selectable high pass or band pass filter and an average power processor unit, among other things.09-27-2012
20130080086METHOD FOR THE NON-DESTRUCTIVE INSPECTION OF A TEST OBJECT OF GREAT MATERIAL THICKNESS BY MEANS OF ULTRASOUND, THE USE OF A TEST PROBE FOR CARRYING OUT THE METHOD, AN ULTRASONIC TEST PROBE, A CONTROL UNIT FOR AN ULTRASONIC TEST PROBE AND A DEVICE FOR THE NON-DESTRUCTIVE INSPECTION OF A TEST OBJECT OF GREAT MATERIAL THICKNESS BY MEANS OF ULTRASOUND - Method and apparatus for the non-destructive inspection of a test object with a large material thickness by means of ultrasound. The apparatus includes an ultrasonic test probe with an ultrasonic transducer divided into a plurality of individually activatable transducer segments wherein the transducer segments are concentric circles or rings, or sections thereof. A first group j (j=1, 2, 3, . . . ) of transducer segments is selected in such a way that a parallel activation of these transducer segments results in a circular active surface Fj of the ultrasonic transducer (03-28-2013
20130041602RECORDING MATERIAL DETERMINATION DEVICE FOR DETERMINING WHETHER RECORDING MATERIALS ARE DOUBLY FED - A recording material determination device obtains a difference between a peak time, which is a first measurement result when an ultrasonic wave has passed through a recording material, and a peak time, which is a second or subsequent measurement result. The recording material determination device compares the difference with a double feed determination threshold value set based on the difference between the peak times, to precisely determine double feed of the recording materials without being influenced by an environment and the kind of the recording material.02-14-2013
20100036620SIMULATING A VIBRATION PATTERN IN A COMPUTER SUBSYSTEM - Some embodiments of the present invention provide a system that generates a simulated vibration pattern in a computer subsystem. During operation, a vibration pattern is monitored at a location in the computer subsystem, wherein the vibration pattern is monitored while the computer subsystem is incorporated into the computer system and the computer system is operating. Then, the vibrations of the computer subsystem are mimicked by generating the simulated vibration pattern at the same location in the computer subsystem based on the monitored vibration pattern.02-11-2010
20100042342Method and Apparatus for Measurement of Mechanical Characteristics of a Cement Sample - A system for non-destructively measuring the strength of a cement slurry sample includes an elongate sample container for receiving a cement slurry sample. The elongate sample container has a mass mounted at its first end. A transducer mounted at a second end of the elongate sample container vibrates the elongate sample container and mass. The elongate sample container, mass and transducer have a known resonance. The system calculates the strength of a tested cement slurry within the elongate sample container as a function of variation in resonance of the elongate sample container, mass and transducer.02-18-2010
20100042341DEVICE FOR DETERMINING DEFORMATION IN A BEARING ROLLER - Device for determining displacement, the device comprising at least two substantially parallel plates located at a distance from each other. The device is arranged to determine a displacement of at least two predetermined parts of each of the plates with respect to each other and the displacement are directed substantially perpendicular to a main surface of the plates, wherein the displacement is a result of bending of the plates. The device comprises at least one sensor for measuring the displacement.02-18-2010
20100042343DEVICE AND PROCESS FOR MACHINE DIAGNOSTICS BY MEANS OF VIBRATION MEASUREMENT - A device for machine diagnostics, with a vibration sensor (02-18-2010
20130030724DETECTION OF PIPELINE CONTAMINANTS - A computer-implemented method, system, and/or computer program product detects contaminants in a pipe that is transporting a known fluid. A baseline vibration pattern is established from readings generated by a smart sensor that is affixed to the pipe. This baseline vibration pattern is caused by a flow of the known fluid as the known fluid travels through the pipe in an unadulterated form. Subsequent readings from the smart sensor are taken to generate a new vibration pattern. In response to the new vibration pattern being different, beyond a predefined range, from the baseline vibration pattern, the new vibration pattern is matched to a known vibration pattern in order to identify a specific contaminant of the known fluid.01-31-2013
20130046487VISCOELASTICITY MEASURING METHOD AND VISCOELASTICITY MEASURING APPARATUS - [Problem] A viscoelasticity measuring method and a viscoelasticity measuring apparatus are provided which can measure viscoelasticity of a sample substance even when the quantity of the sample substance is minute.02-21-2013
20090043518METHOD FOR ASSIGNING PEAK CODES USING REGION PARTITION SCHEME, THE PEAK CODES FOR THE METHOD, AND METHOD FOR PREDICTING/DIAGNOSING FAULTY OPERATION OF MECHANICAL DEVICE USING PEAK CODES - A method for assigning a peak code using a region partition scheme, the peak code for use in the method, and a method for diagnosing a faulty operation of the mechanical device using the peak code are disclosed. The method analyzes a frequency of either a unique operation sound or vibration signal generated when each normal-status mechanical device is operated, acquires a normal peak code, and compares the acquired normal peak code with a measurement peak code acquired by analyzing a frequency of either a unique operation sound or vibration signal measured from a measurement-objective mechanical device, such that it determines the presence or absence of a faulty operation of each mechanical device according to the result of the comparison.02-12-2009
20130073228System Responsive to Machine Vibrations and Method of Use - A first embodiment of a system for measuring and analyzing a machine property includes a detector with a vibration sensor, power source, a data transmitter, a first data processor configured and adapted to obtain sensed vibration data from the sensor and convert it into digital data to be transmitted through the data transmitter, and a system server operatively in communication with the detector. The system server has software that can process and analyze data such as the sensed vibration data received via the data receiver. In a second embodiment, the system includes a vibration sensor, a terminal comprising a user interface unit and a first data processor that can obtain sensed vibration data from the sensor and convert it into digital data to be transmitted through the first data transceiver. In this embodiment, data may be presented visually on the user display area and user input received input from the user input area.03-21-2013
20090271130METHOD FOR MEASURING SUSPENDED SEDIMENT CONCENTRATION IN WATER - A method for measuring suspended sediment concentration (SSC) in water includes the steps of: placing a vibrating-type SSC measuring probe in a target water body whose SSC is to be measured, and causing the SSC measuring probe to vibrate; measuring a vibratory signal resulting from the vibration of the SSC measuring probe, and obtaining a vibration response of the SSC measuring probe according to the vibratory signal; and obtaining the SSC of the target water body based upon the vibration response and a pre-established relationship between vibration responses of the SSC measuring probe to various known SSCs.10-29-2009
20120226452Improvements in Distributed Fibre Optic Sensing - Techniques for determining lateral offset of the source of an acoustic disturbance in a distributed acoustic fibre optic sensor are described. The sensor comprises an optical source (09-06-2012
20100023281Apparatus for monitoring rotating components - The apparatus for monitoring appliances and machines having rotating components, particularly for monitoring compressors, vacuum pumps and other pumps, has a sensor, an evaluation electronics unit and an interface for the output of signals. The evaluation electronics unit has a microprocessor having three inputs for performing measurements in three different frequency ranges at different frequency resolutions, with the respective vibration intensities being averaged at a plurality of frequencies in line with the third-octave spectrum. The interface is a two-wire interface which is used to report different operating states using different DC values.01-28-2010
20120232812CHATTERING DETECTION METHOD FOR MACHINE TOOL - Reference phase variation values σk09-13-2012
20120239317CONTROLLING DEVICE AND METHOD FOR ABNORMALITY PREDICTION OF SEMICONDUCTOR PROCESSING EQUIPMENT - Disclosed in this invention is a controlling device for abnormality prediction of semiconductor processing equipment. The controlling device includes a multiplexer connecting a plurality of vibration sensors to a spectrum analyzer. Therein, the vibration sensors are non-destructively installed to a variable-frequency rotating mechanism inside the semiconductor processing equipment. The multiplexer includes an adapter and at least a modularized multi-channel connecting assembly plugged into the adapter where the number of the connected vibration sensors is less than the number of the signal connecting terminals of the multiplexer so that at least one terminal is unconnected with the vibration sensors. Additionally, a control signal wire connects the unconnected terminal to a corresponding controller of the variable-frequency rotating element. The vibration spectrum analyzer is configured to record and collect both vibration signals and control signals where these signals are transformed into time-domain waveforms to track the lifetime of the equipment, to predict the failure of the equipment, and to reduce equipment down time, parts waiting time, and equipment repair time of the semiconductor processing equipment.09-20-2012
20110137588METHODS, APPARATUS, OR SYSTEMS FOR CHARACTERIZING PHYSICAL PROPERTY IN NON-BIOMATERIAL OR BIO-MATERIAL - Techniques (e.g., system, apparatus, method, machine-readable medium) can be configured for characterizing a rheological or other structural physical property of a sample of a substance. In an example, this can include acoustically bidirectionally deforming the portion of the sample over a deformation range about a neutral-deformation locus within the deformation range, measuring a deformation response of at least a portion of the sample to the insonification, and characterizing the physical property of the sample using the measured response of at least a portion of the sample to the insonification, even in the presence of a flowing substance.06-09-2011
20090177419ADJUSTMENT DEVICE OF ROTARY MACHINE, ADJUSTMENT METHOD OF ROTARY MACHINE, AND MANUFACTURING METHOD OF ROTARY MACHINE - An adjustment device of a rotary machine including a movable base formed rotatable around an axis, vibration sensors formed so that the sensors can measure amplitudes of longitudinal vibration and transverse vibration of the rotary machine, an adjustment weight to be arranged on the movable base, and a PC including a control section for calculating a position and weight of the adjustment weight, a storage section, and an amplifier are provided, an approximate expression is obtained by the PC from an amplitude measured by the vibration sensor, and a predetermined function, an optimum change amount x and position θ of the adjustment weight are calculated from the approximate expression, whereby the adjustment weight is arranged.07-09-2009
20100268491METHOD AND APPARATUS FOR ASSESSING THE INTEGRITY OF A ROCK MASS - A method for assessing the integrity of a rock mass, the method including impacting the rock mass, capturing an acoustic signal generated as a result of the impact, deriving a frequency distribution for the captured acoustic signal, processing data from the frequency distribution by means of a neural network process applying artificial intelligence to assess the inputted data, and presenting a signal from the neural network process which is indicative of the integrity of the rock mass.10-21-2010
20110288795METHOD AND SYSTEM FOR DETERMINING THE TIME-OF-FLIGHT OF AN ACOUSTIC SIGNAL - A method of estimating the time and flight of an acoustic signal transmitted by a transmit acoustic transducer determines a difference in time between receiving the transmitted acoustic signal and receiving an electromagnetic wave transmitted by the transmit acoustic transducer coincident with transmitting the acoustic signal.11-24-2011
20110172936METHOD FOR RECONSTRUCTING AN ACOUSTIC FIELD - Disclosed herein is a method of reconstructing a sound field. The method comprises receiving measured values indicative of a first acoustic quantity measured at a set of measurement locations; defining a set of virtual source locations; and computing a second acoustic quantity for at least one target location from one or more wave functions each representative of a respective sound field originating from a respective one of the defined set of virtual source locations; wherein the one or more wave functions are weighted by respective one or more weighting factors, and wherein computing comprises determining the one or more weighting factors from a least-norm fit of the one or more wave functions to the received measured values.07-14-2011
20110288796CONDITION BASED MONITORING SYSTEM BASED ON RADAR SENSOR - A sensing system comprising a radar-based vibration sensor and processing unit used to collect and process vibration information from a machine of interest. The radar-based vibration sensor obtains vibration data from mechanical operation of a component or series of components in the machine, and may be steered toward specific regions of interest of the machine. The processing unit analyzes the data, and may fuse data from a plurality of vibration sensors, such as radar-based vibration sensors and multiple machine-mounted sensors such as accelerometers. From this analysis, indications related to a status of the mechanical operation of the components in the machine of interest may be provided to relevant users.11-24-2011
20100082276PROCESS FOR MONITORING A DRIVE TRAIN COMPONENT OF A WIND POWER PLANT - A process for monitoring a drive train component (04-01-2010
20080312850CORRECTION OF IN-LINE INSPECTION RUN DATA LOGS USING ACOUSTICAL DATA - A method of correcting in-line inspection run data logs using acoustical data includes positioning above ground markers periodically along a length of a pipeline to be inspected. The above ground markers generating detection events as an inspection tool passes. Acoustic detectors are positioned periodically along the length of the pipeline. An inspection tool travels along the length of the pipeline. An inspection log is created based on the detection events. Acoustic data generated by the inspection tool is recorded, and used to adjust the inspection log.12-18-2008
20100082272USB VIBRATION DATA ACQUISITION - A system for collecting and analyzing vibration data is provided. The system includes: at least one sensor for sensing vibrations and producing an electrical signal corresponding to the sensed vibrations; a Universal Serial Bus (USB) communication device for receiving the electrical signal corresponding to the sensed vibrations from the at least one sensor and conditioning and sampling the electrical signal to produce a conditioned signal; and a data collector for receiving the conditioned signal and storing the conditioned signal in a data storage device.04-01-2010
20100082275Method for the Detection of Errors in Pump Units - A method is provided for detecting faults in a pump assembly having an electric motor, or faults in an electric motor, having at least one rotating shaft. A vibration signal is detected, the detected vibration signal is processed in a manner such that the influence of the current rotational speed of the shaft is eliminated, periodic signals are filtered out of the processed vibration signal, and the vibrational operating condition, in particular possible faults, is recognized by way of the periodic signals. Further, a pump assembly having an electric motor or an electric motor is provided in which this method is applied.04-01-2010
20100125428System and Method for Detecting and Measuring Vibration in an Industrial Roll - A system for determining the source of vibration of a nipped roll assembly includes: a first substantially cylindrical roll; a mating structure positioned relative to the first roll to form a nip therewith; a plurality of annular nip condition sensor units mounted on the first roll; each of the annular nip condition sensor units being positioned at different axial locations along the first roll and configured to provide nip condition signals from the nip, the signals indicating a nip condition at multiple circumferential locations; and a processor associated with the sensor units that receives signals from the sensor units. The processor is configured to convert the signals from the sensor units into nip condition readings for the multiple circumferential locations at each axial location. Such a system can detect irregularities in a roll or the mating structure that can cause undesired vibration.05-20-2010
20080281535Meter Electronics and Methods For Verification Diagnostics For a Flow Meter - Meter electronics (11-13-2008
20080228413SYSTEMS AND METHODS FOR PREDICTING ACOUSTIC SIGNATURES - A system for determining an acoustic signature of a device is disclosed that includes a computer processor operable to determine strength and location of shock wave sound signals based on propagation of sound waves generated by the device. The strength and location of the shock wave signals are modified due to dissipation and dispersion effects in a non-uniform atmosphere. The shock wave signals are separated into even and odd numbered signals, and oscillations in the signals are smoothed by averaging even and odd numbered shock signals.09-18-2008
20080288187Method and Device for Detecting the Location of a Pulse-Type Mechanical Effect on a System Part - A method and device detect a position of a pulsed mechanical effect on a plant component. An operating noise in the plant component is continuously recorded by sensors which are arranged on the plant component and converted by the above into a measured signal. The measured signals of the sensors undergo a transformation in a first time window. A first evaluation function is derived from a plurality of first transformations determined in this manner, the evaluation functions display an appearance of the pulsed mechanical effect. Accordingly, when detecting an effect following the second shorter time window having the same algorithms, second transformed and respectively, second evaluation functions are derived, from which, respectively, one time point is determined. Wherein the sound signal produced by the effect impacts upon the sensor. From there, running time differences produced between the sensors can be exactly reconstructed on the position of the effect.11-20-2008
20120296582APPARATUS FOR ANALYSING THE CONDITION OF A MACHINE HAVING A ROTATING PART - A method of operating an apparatus for analysing the condition of a machine having a part rotating with a speed of rotation (f11-22-2012
20100191485SAFETY VALVE VIBRATION ANALYZER - The safety valve vibration analyzer includes: a set condition input unit in which set conditions of a physical model including a safety valve and an upstream pipe connected to the safety valve are inputted; a safety valve governing equation holder that holds a safety valve governing equations; a pipe governing equation holder that holds a pipe governing equation; a processing unit that derives a time variation of a valve lift by using the set conditions inputted, the safety valve governing equations, and the pipe governing equations; and a valve lifting force function holder that holds a valve lifting force function. The processing unit derives the time variation of the valve lift by applying the valve lifting force function to the equation of motion of the valve disc.07-29-2010
20100145639DIAGNOSIS METHOD OF DEFECTS IN A MOTOR AND DIAGNOSIS DEVICE THEREOF - A diagnosis method of defects in a motor and a diagnosis device thereof are described. A vibration sensing module can generate a vibration signal corresponding to a vibration of a motor during operation of the motor. Then, a data pre-processing procedure is performed to eliminate noises of the vibration signal. After the data pre-processing procedure, an analyzing procedure is performed to determine a first harmonic of spectrum features in the spectrum of the pre-processed vibration signal. And, other spectrum feature(s) is(/are) retrieved from the spectrum of the pre-processed vibration signal according to the first harmonic. Finally, a comparison procedure is performed with a defect spectrum feature database according to the retrieved spectrum features, so as to determine a defect type of the motor.06-10-2010
20100153031Timing Analysis - A method is provided for analysing blade displacements detected by a plurality of circumferentially spaced stationary timing probes associated with an assembly of rotating blades mounted on a rotor. The blade displacements correspond to the times at which the blades pass the respective probes. The method includes the step of: 06-17-2010
20130218490METHOD AND SYSTEM FOR DETERMINING THE POSITION OF AN ULTRASONIC WEDGE AND A PROBE - A method and system for determining the position of an ultrasonic wedge and a probe is disclosed. The positioning method includes the steps of automatically determining the position of the ultrasonic wedge and the probe based on a number of parameters, including parameters that are based on the particular ultrasonic wedge and the probe as well as parameters based on the dimensions of the conduit and the girth weld.08-22-2013
20090024336Method for weighing vehicles crossing a bridge - A method for weighing vehicles moving on a bridge deck pavement is provided. At least one vibration sensor is mounted on a lower side of the pavement to sense low frequency pavement vibrations generated by moving vehicle wheels and propagated in waves in the pavement. Vibration sensor output signals are provided to a computing device. Sensed vibration energy rate is computed and, with signals from vibration sensors mounted at two locations separated by a known longitudinal distance, vehicle speed is also computed. The weight of the vehicle is determined as the product of a calibration coefficient and the ratio of sensed vibration energy rate to velocity. Using vibration sensor signals indicative of wheel generated vibrations in the very near field and summing vibration energy rates computed from these signals during vehicle passage over the vibration sensors the weight of individual vehicles is computed when other moving vehicles are present.01-22-2009
20090093978SYSTEM AND METHOD FOR THE ACOUSTIC MONITORING OF TAPBLOCKS AND SIMILAR ELEMENTS - The described embodiments relate to systems and methods for acoustic monitoring of metallurgical furnace cooling elements. Some metallurgical furnaces have a tapblock that is blocked during operation of the furnace. The tapblock may be opened by lancing, drilling, tapping or by other means to release metal from the furnace. By monitoring acoustic emissions during the opening process, feedback may be provided to improve the opening process and to avoid excessive damage to the tapblock, the cooling elements, a refractory lining of the tapblock or other elements of the metallurgical furnace.04-09-2009
20110224922Method for preprocessing vibro-sensor signals for engine diagnostics and device for carrying out thereof - A method is provided for improved diagnostics of an internal combustion engine that includes cylinders, a crankshaft, crankshaft rotation angle sensor (CRAS), a vibro-sensor, a logic-mark sensor, each sensor produces respective signals. The method contemplates receiving the signals dividing them into a plurality of idling cycles, determining the crankshaft's position based on stochastic filtration, quasicontinuous representation of the signal, the Kalman filter, a nonlinear stochastic filter, based on CRAS characteristics and quasicontinuous representation, determining the Riesz generator basis function based on technical characteristics of the vibro-sensor, secondary discreeting of the signals with a replacement of argument, discreeting of a reciprocal function, obtaining a discrete wavelet transform, obtaining a continuous wavelet transform, obtaining a discrete wavelet transform of a reciprocal function, and producing output data. Two-dimensional arrays are divided relatively to predetermined indexes in the discrete transforms, an empirical probability distribution function is computed. Further optional diagnostic processing is provided.09-15-2011
20110231119METHOD FOR CAPTURE, AGGREGATION, AND TRANSFER OF DATA TO DETERMINE WINDSHIELD WIPER MOTION IN A MOTOR VEHICLE - Apparatus for capturing, aggregating, and transferring data to detect windshield wiper motion in a motor vehicle so as to alert the driver of the need to turn on headlights. The apparatus includes motion-sensing hardware having a microprocessor programmed to detect rhythmic movement of shadows at regular intervals or to receive digitized signals from inertial sensors and to sense rhythmic patterns of vibration or motion in the car and characterize and filter the patterns to accurately distinguish wiper motions from other motions. The software then instructs the microprocessor to output a perceivable alert to the driver indicating that vehicle lights must be turned on.09-22-2011
20090099796AEROELASTIC MODEL USING THE PRINCIPAL SHAPES OF MODES (AMPS) - The Aeroelastic Model using the Principal Shapes of modes (AMPS) is a method used to predict flutter in gas turbine engines. Modern gas turbine engines often include rotors with flexible disks and/or significant blade geometry variations. The AMPS method accounts for the varying blade mode shapes associated with flexible disks as well as changing blade geometry, providing accurate flutter predictions for a large number of modes from a relatively small number of CFD (computational fluid dynamics) simulations. The AMPS method includes determining a smaller set of principal shapes that approximates a larger set of structural modes of interest. Using linear superposition, aerodynamic forces associated with the vibration of the principal shapes can be used to construct the full aerodynamic coupling matrix associated with the structural modes of interest. An eigenvalue equation is solved to determine a damping distribution associated with the structural modes of interest. The damping distribution is predictive of flutter.04-16-2009
20120078544Wireless rotor track and balance system for rotorcraft - Disclosed is a rotor track and balance system for rotorcraft that includes a data processing unit, a tachometer sensor and at least one accelerometer. The tachometer sensor is located remotely from the data processing unit and is mounted proximate to the rotating blades of the rotorcraft. The tachometer sensor is adapted to measure the speed and position of the rotating blades and to wirelessly transmit speed and position data to the data processor. The at least one accelerometer is also located remotely from the data processing unit and is mounted proximate the rotating blades of the rotorcraft. Each accelerometer is adapted to measure vibration anomalies in the rotating blades and to wirelessly transmit vibration data to the data processor. The data processing unit synchronizes the wireless data transmitted from the tachometer sensor and the wireless accelerometer(s) and determines necessary adjustments to be made in order to reduce the vibration anomalies in the rotor blades.03-29-2012
20110144930PASSIVE ACOUSTIC UNDERWATER INTRUDER DETECTION SYSTEM - A portable threat detection apparatus and method is disclosed which may comprise a plurality of acoustic emission sensors arranged in a cluster, forming a polygon defining at least two axes of alignment between respective pairs of acoustic emission sensors; a computing device in cooperation with a non-transitory computer readable storage medium comprising computer readable instructions for performing: receiving a first signal produced by a first acoustic emission sensor within a respective pair of acoustic emission sensors, in response to the first acoustic emission sensor detecting an acoustic emission from a source, and receiving a second signal produced by a second acoustic emission sensor within the respective pair of acoustic emission sensors, in response to the second acoustic emission sensor detecting the acoustic emission; determining a cross-correlation factor between the first signal and the second signal; and, determining a bearing to the source based on the cross correlation factor.06-16-2011
20120197556METHOD AND SYSTEM TO DETECT ACTUATION OF A SWITCH USING VIBRATIONS OR VIBRATION SIGNATURES - Described herein are embodiments of methods and systems to detect actuation of a switch using vibrations and vibration signatures. One aspect of the method comprises sending an actuation signal to a switch, receiving a vibration signal associated with the switch, and determining from the vibration signal whether the actuation occurred.08-02-2012
20090248326VIBRATION SENSOR - A vibration sensor includes a housing, a high G accelerometer installed in the housing to measure vibratory accelerations communicated to the housing; a low G accelerometer installed in the housing to measure vibratory accelerations communicated to the housing; and a processor installed within the housing to receive data from the high G accelerometer and the low G accelerometer. A method for using the vibration sensor includes employing the low G and the high G acceleration data. Another vibration sensor includes intrinsically safe buttons.10-01-2009
20100161253Method and Apparatus for Measuring Properties of Board Products - An apparatus and method device for measuring at least one property of a board product, such as a paperboard product which includes a transmitter for applying a vibrational excitation to at least one region of the board product. The excitation includes a plurality of frequencies lying within a predetermined frequency range. The apparatus further includes a receiver for measuring a vibrational response of the board product to the vibrational excitation. A processor processes the measured vibrational response to obtain a frequency response of the region of the board product to the excitation, and analyses the frequency response to determine a measure of at least one property of the board product.06-24-2010
20100161255Acoustic-Based Rotating Component Analysis - An acoustic sensor acquires acoustic data corresponding to a rotating component of a machine during operation of the machine. The acoustic sensor can be configured to enhance acoustic signals in a range of frequencies corresponding to at least one evaluated condition of the rotating component and/or enhance the acoustic signals received from a directional area narrowly focused on the rotating component. The rotating component is evaluated using the acoustic data acquired by the acoustic sensor. In an embodiment, the machine can be a vehicle traveling past a parabolic microphone. In a more specific embodiment, the vehicle is a rail vehicle and the rotating component is a railroad wheel bearing.06-24-2010
20100262388Providing Stress Information In An Ultrasound System - Embodiments for providing stress information in an ultrasound system are disclosed. In one embodiment, by way of non-limiting example, an ultrasound system comprises: an ultrasound data acquisition unit configured to transmit/receive ultrasound signals to/from a target object while applying a stress to the target object to thereby output first ultrasound data and to transmit/receive ultrasound signals to/from the target object while releasing the stress applied to the target object to thereby output second ultrasound data; and a processing unit configured to form stress information based on the first and second ultrasound data, wherein the stress information includes stress magnitude information, stress application period information and ultrasound probe gradient information.10-14-2010
20100262389ANALYZING APPARATUS - Disclosed is an analyzing apparatus including a first drive part (10-14-2010
20100191484Electrical Submersible Pump Rotation Sensing Using An XY Vibration Sensor - When an electrical submersible pump motor runs, rotary vibrations occur in the same direction as the rotation of the motor. This vibration can be detected by an XY vibration sensor. Depending on the rotation direction, the vibration along the X-axis will be out of phase +90 degrees or −90 degrees with the vibration in the Y-axis. To determine the rotation direction, the vibration sensor measures a vibration of an ESP pump in two axes, recording first and second vibration signals. Next, whether the first signal either leads or lags the second signal is determined by, for example, comparing correlations of the first and second signal with the second signal shifted by plus and minus one-fourth of the period of rotation. Then a direction of a rotation of the electrical submersible pump can be determined responsive to the determination of whether the first signal either leads or lags the second signal.07-29-2010
20100217544SYSTEMS AND METHODS FOR THE INSPECTION OF STRUCTURES HAVING UNKNOWN PROPERTIES - An inspection method includes driving a plurality of spaced apart transmitting transducer elements with a respective time delay and a respective frequency such that each of the transmitting transducer elements transmits an ultrasonic guided wave through a transmission medium defined by a material having at least one unknown physical property. The ultrasonic guided waves are received at a receiving transducer element disposed at a distance from the transmitting transducer elements. A respective time delay and a respective frequency for each of the transmitting transducer elements is determined that provides a maximum amplitude in a signal received at the receiving transducer element. The plurality of transmitting transducer elements are activated in accordance with the determined time delays and frequencies to transmit inspection signals through the transmission medium. A location of a defect in the material is determined based on velocities of the inspection signals received at the receiving transducer element.08-26-2010
20110112775Method and device for monitoring an aircraft structure - The invention relates to servicing an aircraft. For this purpose said aircraft is provided with a permanently monitoring device comprising piezo-electric sensors. The inventive method consists in continuously recording signals transmitted by said sensors and in subsequently calculating a fatigue to which the aircraft critical parts are exposed, thereby making it possible to better monitoring said critical parts. Said invention makes it possible to reduce the aircraft servicing costs.05-12-2011
20120035868Method and System For Media Presentation During Operative Workflow - A portable measurement system is provided comprising a probe, two trackers, a receiver and a pod. A user interface control captures a location and position of the probe in a three-dimensional sensing space with respect to a coordinate system of the receiver from time of flight waveform analysis. The system suppresses a ringing portion of the received ultrasonic and minimizes distortion associated with ultrasonic transducer ring-down during high-resolution position tracking of the probe and the two trackers. Media is presented according to a customized use of the probe and two trackers during an operation workflow.02-09-2012
20100211335INFORMATION PROCESSING APPARATUS AND INFORMATION PROCESSING METHOD - An information processing apparatus of the present invention includes an HDD status monitoring part 08-19-2010
20100211334Methods and Systems for Monitoring Stator Winding Vibration - Embodiments of methods and systems for monitoring stator winding vibration of a rotating electric machine are provided. According to one example embodiment, a system includes at least one sensor including at least one conductive sensor antenna deposited on a first side of at least one layer of a printed circuit board substrate and positioned to substantially face a stator winding, and a non-conductive shield mounted to an opposing side of the printed circuit board substrate and positioned to substantially face away from the stator winding. The system further includes an alternating current power source in communication with the sensor and operable to deliver current to the conductive sensor antenna. A signal processing unit may be in communication with the sensor, operable to measure a load on the sensor antenna and to transmit vibration data to a controller responsive to the load on the sensor antenna.08-19-2010
20100036622METHOD AND SYSTEM FOR PREDICTING ACOUSTIC FIELDS BASED ON GENERALIZED MOVING FRAME ACOUSTIC HOLOGRAPHY - A method and system for predicting acoustic fields based on generalized moving frame acoustic holography are disclosed. The method includes acquiring a first wavenumber spectrum on a measurement plane according to a moving coordinate system, converting the first wavenumber spectrum to a second wavenumber spectrum on a reference coordinate system using a relative velocity between the measurement plane and a medium, converting the second wavenumber spectrum to a third wavenumber spectrum on a prediction plane using an acoustic wave propagation theory, converting the third wavenumber spectrum to a fourth wavenumber spectrum on a moving coordinate system using a relative velocity between the medium and the prediction plane, and computing acoustic fields on the prediction plane using the fourth wavenumber spectrum.02-11-2010
20110238336DEFECT DETECTION IN OBJECTS USING STATISTICAL APPROACHES - Disclosed are systems, methods and articles, including an inspection system that includes at least one generator to apply energy to an object at an application point to cause waves to travel, at least partly, through the object. The system further includes at least one detector configured to detect at least a portion of the waves traveling through the object, and a statistical analyzer to perform a statistical analysis based on an output produced by the at least one detector in response to the detected portion of the waves, the statistical analysis being used to determine whether at least one defect is present in the object.09-29-2011
20090276168METHOD AND APPARATUS FOR LOOSENING OF FASTENERS ON STRUCTURES - Methods and apparatuses for detecting fastener loosening. Sensors query a structure at a baseline value of an environment variable, such as temperature, and this baseline signal is stored for later use. Subsequently, users can query the structure remotely and at any time, and the signals from these queries are compared to the stored baseline signal. In some embodiments, an index is calculated, and the system determines that one or more fasteners have come loose if the calculated index exceeds a predetermined threshold value. It is desirable to select a time window within which the query signal is most sensitive to fastener loosening but least sensitive to variations in the environment variable. Accordingly, embodiments of the invention include methods and apparatuses for determining an optimal time window for use in calculating the above described index.11-05-2009
20090319205Monitoring System, Especially Vibration Monitoring System, and Method for Operating Said System - There is described a monitoring system, especially a vibration monitoring system, and a method for operating said system. The system is finely adjustable between purely single-channel to one fault tolerant and limited two fault tolerant without the necessity of additional special hardware components.12-24-2009
20090319206Timing analysis - A method is provided for identifying resonant frequency vibration events in an assembly of rotating blades mounted on a rotor. A plurality of circumferentially spaced stationary timing probes associated with the blades detect the times at which the blades pass the respective probes. The method includes the steps of: 12-24-2009
20110112777METHOD AND DEVICE FOR ESTIMATING THE CLAMPING FORCE ON A WINDING PACKAGE OF A TRANSFORMER OR A REACTOR - A method and a device for estimating the winding clamping force on a winding package of a transformer or a reactor, the winding package comprising at least one winding with connections and an iron core. The device includes a current pulse generator configured to generate a current pulse sufficient to excite the winding, means for supplying the current pulse to the winding, a sensor for measuring vibrations of the transformer or the reactor generated by the current pulse, and a computing unit configured to calculate a mechanical resonant frequency based on the measured vibrations and to estimate the clamping forces on the winding packages based on the calculated mechanical resonant frequency and a predetermined relation between the expected mechanical resonant frequency and the clamping force.05-12-2011
20110112778ULTRASOUND SYSTEM AND METHOD FOR PROVIDING DOPPLER SOUND - Embodiments for providing Doppler sounds are disclosed. In one embodiment, provided is an ultrasound system which may include: an ultrasound data acquiring unit configured to transmit ultrasound signals to a target object and receive ultrasound echo signals reflected therefrom, to acquire a plurality of ultrasound data associated with the target object, each of which having a synchronization (Sync) number uniquely assigned thereto; a storing unit to store the plurality of ultrasound data therein; an user input unit configured to allow a user to input a user instruction; and a processing unit coupled to the ultrasound data acquiring unit, the storing unit and the user input unit and configured to form a Doppler mode image having the Sync number based on the plurality of ultrasound data, the processing unit being further configured to extract ultrasound data with a Sync number corresponding to the user instruction from the storing unit, thereby forming the Doppler sound based on the extracted ultrasound data.05-12-2011
20110112776APPARATUS AND METHOD FOR DETERMINING THE INTERNAL CLEANLINESS OF A TUBE - A system to measure the internal state of a bundle of tubes by injecting a signal into each tube of the bundle, receiving reflections from the tube due to anomalies within the tube, then analyzing the reflections to determine the type or characteristics about the anomalies. The analyzed information is stored in database to be used for statistical processing. Further, the device can be used in the performance of a cleaning process by conducting an initial assessment of the tubes in a bundle of tubes, comparing the stored data and estimating the number of cleaning cycles that will be required, and re-conducting the evaluation of the state of the tubes after every cleaning cycle or after every few cleaning cycles.05-12-2011
20100305886Kurtosis Regulating Vibration Controller Apparatus and Method - A vibration control system provides a user-specified value of kurtosis as well as user control over a baseline random spectral density profile. The baseline random spectral density profile and a signal that embeds the desired value of kurtosis are summed in the frequency domain prior to forming a time-domain output waveform that drives a vibration table with attached unit under test. Feedback from a sense transducer attached to the vibration table or the unit under test measures the as-realized vibration's random spectral density and kurtosis value, which are then compared to the desired values to allow correction.12-02-2010
20090070050Method for fault detection and diagnosis of a rotary machine - Modem rotary machine production requires built-in fault detection and diagnoses. The occurrence of faults, e.g. increased friction or loose bonds has to be detected as early as possible. Theses faults generate a nonlinear behavior. Therefore, a method for fault detection and diagnosis of a rotary machine is presented. Based on a rotor system model for the faulty and un-faulty case, subspace-based identification methods are used to compute singular values that are used as features for fault detection. The method is tested on an industrial rotor balancing machine.03-12-2009
20100332160METHOD FOR DETERMINING A RADIATION MEASUREMENT FOR THERMAL RADIATION, ARC FURNACE, A SIGNAL PROCESSING DEVICE PROGRAMME CODE AND STORAGE MEDIUM FOR CARRYING OUT SAID METHOD - In a method, a variable characterising an operational state of an electrode of an arc furnace can be determined. An electrode flow guided to the electrode is detected in the method and the structure-borne noise oscillations are detected. From the detected electrode flow, a flow evaluation signal associated with the frequency range of the detected electrode flow is determined. From the detected structure-borne noise oscillations, an oscillation evaluation signal that is associated with a frequency range of the detected structure-borne noise oscillations is detected and a quotient from the oscillation evaluation signal and the flow evaluation signal is formed as a radiation measurement for at least one frequency common to the detected electrode flow and the detected structure-borne noise oscillation.12-30-2010
20100228506NON-DESTRUCTIVE INSPECTION APPARATUS - A free-hand inspection apparatus for non-destructively inspecting a structure may comprise an array and an inertial sensor. The array may comprise a plurality of elements for transmitting and receiving inspection signals towards and from a structure being inspected. The inertial sensor may be for measuring acceleration and angular rotation rate in X, Y, and Z directions of the array.09-09-2010
20100217543GENERATING A VIBRATION PROFILE FOR A ROTATING COOLING DEVICE IN A COMPUTER SYSTEM - One embodiment of the present invention provides a system that generates a vibration profile for a rotational device in a computer system. During operation, the system sequentially sweeps a rotation speed of a rotational device over a range of rotation speeds. While driving the rotational device at each rotation speed, the system collects a time-domain vibration signal produced by the rotational device and subsequently computes a frequency spectrum of the time-domain vibration signal. In this way, the system generates a set of frequency spectra associated with the range of rotation speeds. Next, the system combines the set of frequency spectra to generate a composite vibration profile for the rotational device.08-26-2010
20110015880ULTRASONIC PROPAGATION TIME MEASUREMENT SYSTEM - High-quality and high-speed electronic pen drawing performance is ensured without being affected by noise of an ultrasonic signal which is generated by an apparatus using ultrasonic such as a motion detector. In an ultrasonic receiver for use in ultrasonic propagation time measurement, an external environment noise is measured to first determine a frequency. Thereafter, centered around the frequency, a band elimination filter having a several kHz band is structured as software to again measure an external environment noise. This sequence is repeated until a signal intensity lowers below a predetermined value. When the signal intensity fails to lower below the predetermined value even after a predetermined number of repetitions of the sequence, a transmission output on the side of an electronic pen as an ultrasonic transmission source is increased or an ultrasonic oscillation frequency is changed.01-20-2011
20110144929TORSIONAL RESONANCE FREQUENCY MEASURING DEVICE AND METHOD - The invention provides a torsional resonance frequency measuring device and method applicable to a large-scale power generating equipment or a traction motor equipment with a rotating shaft, such as a large power grid-tied wind turbine. The invention is characterized by employing a machine-side converter existing in the grid-tied wind turbine to output direct currents to a three-phase PMSG (permanent magnet synchronous generator), such that a pulse torque is generated to mechanically excite a rotor of the three-phase PMSG. Afterwards, a control circuit of the machine-side converter acquires back electromotive force generated by the mechanically excited rotor so as to calculate the torsional resonance frequency of the overall drive-chain system according to the frequency spectrum of the back electromotive force.06-16-2011
20110246102Acoustic Emission Toughness Testing For PDC, PCBN, Or Other Hard Or Superhard Material Inserts - An acoustic emissions testing device includes a testing sample, an acoustic sensor communicably coupled to the testing sample, and a load that is exerted on the sample. The sensor detects one or more acoustic events occurring within the sample. The acoustic transmits data to a data recorder, which includes a processor and storage medium for executing instructions provided by a software residing within the storage medium. Upon executing the instructions on the transmitted data, the toughness of the sample is objectively determined and can be ranked comparatively to the toughness of other samples. The instructions provide for categorizing the data into possible acoustic event points and background data points, interpolating a background noise curve, determining the actual acoustic event points, and calculating the area under each actual acoustic event point. In some embodiments, a graphical representation of the cumulative area for each actual acoustic event point is plotted against the corresponding load.10-06-2011
20090048791Method and Device for Detecting a Pulse-Type Mechanical Effect on a System Part - A method and a device for detecting a pulse-type mechanical effect at a system component, include continuously recording an operating noise in the system component with a sensor disposed at the system component and converting the operating noise with the sensor into a measured signal subjected to a mathematical transformation. A sliding mean is calculated by determining quantiles from determined transformations and an evaluation function, which displays an application of the pulse-type mechanical effect on the system component, is derived from the sliding mean.02-19-2009
20110178739SUBJECT INFORMATION OBTAINING APPARATUS, SUBJECT INFORMATION OBTAINING METHOD, AND PROGRAM - A subject information obtaining apparatus has: a light source; a plurality of receiving elements which receive acoustic waves generated from a subject, and output signals; a memory unit for storing, for each of a plurality of predetermined positions, information to represent signals which are output from the plurality of receiving elements when an acoustic wave source is assumed to exist in the position; and an estimating unit for estimating a distribution of acoustic wave sources. The estimating unit assumes a distribution of acoustic wave sources, obtains signals corresponding to positions of respective acoustic wave sources in the assumed distribution from the stored information, and defines a distribution of acoustic wave sources, of which degree of coincidence between the obtained signals and signals obtained in an actual measurement is highest, as the distribution of acoustic wave sources.07-21-2011
20100057384PHYSICAL QUANTITY DETECTION CIRCUIT AND PHYSICAL QUANTITY SENSOR DEVICE - A physical quantity detection circuit (03-04-2010
20110098949SYSTEM AND METHOD FOR HANDLING WIDE DYNAMIC RANGE SIGNALS ENCOUNTERED IN VIBRATION ANALYSIS USING A LOGARITHMIC AMPLIFIER - A data acquisition system for vibration analysis signals includes a logarithmic amplifier for compressing wide dynamic range signals. The logarithmic amplifier replaces attenuators, gain amplifiers, and gain switches used in a conventional system. Further, only a low bit-count analog to digital converter is needed in combination with the logarithmic amplifier. Consequently, the footprint of the system and system cost are reduced.04-28-2011
20100070210DETECTING CONSTRAINED MOTION OF A COMPONENT IN A COMPUTER SYSTEM - Some embodiments of the present invention provide a system that detects the presence of constrained motion in one or more components in a computer system. First, a vibrational spectrum of the computer system is monitored while the computer system operates. Then, the vibrational spectrum is analyzed using a pattern-recognition model to detect constrained motion in one or more components in the computer system, wherein the pattern-recognition model classifies the vibrational spectrum as indicating constrained motion or as not indicating constrained motion.03-18-2010
20110251804Methods And Systems For Isolating A Frequency In A Rotating Machine - A method of isolating a frequency in a rotating machine having at least one sensor includes receiving, from the at least one sensor, a sensor signal that includes at least one frequency, converting the sensor signal to a digital vibration signal, modifying the vibration signal to generate an envelope signal, synchronously oversampling the envelope signal to generate a synchronous envelope signal, and transforming the synchronous envelope signal into a frequency spectrum to isolate the frequency.10-13-2011
20110098950Infrasound Sensor - Embodiments of infrasound sensors comprising multiple matched-responsivity pressure sensors are presented. Infrasound sensors in accordance with the present invention have limited volume, which enables them to observe wind velocity at the same point that infrasound is monitored. The small size and matched-responsivities enable infrasound sensors in accordance with the present invention to obviate the need for complex and costly spatial filters that degrade the signal-to-noise ratio of prior-art infrasound sensors.04-28-2011
20110040504FRUIT MATURITY DETERMINATION METHOD AND SYSTEM - In accordance with some embodiments of the present disclosure, a method for determining fruit maturity is disclosed. The method includes measuring acceleration data associated with an impulse response signal of a target fruit to an excitation force applied to such a target fruit, computing a frequency response of the impulse response signal based on digitized acceleration data, determining a first order resonance frequency from the frequency response, and non-destructively determining a level of maturity for the target fruit based on one or more physical properties of the target fruit and the first order resonance frequency.02-17-2011
20100280772METHOD FOR DETECTION AND AUTOMATIC IDENTIFICATION OF DAMAGE TO ROLLING BEARINGS - The subject of the invention is a method for detection and automatic identification of defects in rolling bearings applicable in diagnosing rolling bearings and detecting damage in a very early stage of its occurrence.11-04-2010
20100057383GENERATING A COMPOSITE VIBRATION PROFILE FOR A COMPUTER SYSTEM - Some embodiments of the present invention provide a system that generates a composite vibration profile in a frequency range for a computer system. First, a vibration spectrum in the frequency range is measured for a test computer system in each configuration in a set of configurations. Then, the composite vibration profile for the computer system is generated based on the measured vibration spectra.03-04-2010
20090312966Method for testing a vibration damper of a motor vehicle in the installed state, and vibration damper-test system for a motor vehicle - A method for checking a vibration damper of a motor vehicle in the installed state includes setting start values of the damping constant kA, the spring rate cA, and the body mass mA for a wheel of a motor vehicle; inducing a vertical vibration of the motor vehicle with the aid of a defined excitation sR12-17-2009
20120065905DEVICE FOR MEASURING NARROW BAND FREQUENCY RESPONSE OF A VIBRATING MACHINE - The present subject matter provides a device for providing indications of vibration energy available from a source of vibration in one or more frequency bands. In one embodiment, the device is constructed to detect and display available vibration energy in a single frequency band using a bandpass filter and associated display. The frequency band is chosen to match an operational frequency band for a vibrational energy harvesting device. In other embodiments, the device may be constructed to display available energy in plural frequency bands either selectively by individual frequency band or by plural frequency bands simultaneously to assist in determining mounting locations for plural energy harvesting devices operating in different frequency bands.03-15-2012
20110213574METHOD AND APPARATUS FOR CALCULATING THE MAXIMUM DISPLACEMENT OF A ROTATING SHAFT - A method is disclosed for monitoring the vibration of a rotating shaft including, measuring a current shaft position and determining a centroid of the shaft. The current shaft sector is then determined. The current distance between the centroid and the current shaft position may then be determined. The current distance is compared with a previously stored maximum distance for that sector, and if greater, the current shaft position and current distance is stored as the new maximum for that sector. After a predetermined period of time, the maximum displacement between the stored maximum positions is calculated, which represents the maximum shaft displacement peak to peak. This value may then be visually displayed or automatically monitored by shaft control computers.09-01-2011
20110257909INERTIALLY REFERENCED SENSOR SYSTEM AND METHOD - An inertially referenced motion sensor that may be rigidly coupled to a relative motion sensor. Signals from the relative motion sensor and inertially referenced motion sensor may be combined to produce an inertially referenced relative signal.10-20-2011
20080288186Dynamic-Mode Atomic-Force-Microscope Probe (Tip) Vibration Simulation Method, Program, Recording Medium, And Vibration Simulator - The vibration characteristic of a dynamic AFM probe is simulated. For a given operation parameter (for example, the displacement u11-20-2008
20110137587SYSTEMS AND METHODS FOR MONITORING ROLLERS FOR CONVEYORS - The present invention at directed to systems and methods for monitoring a conveyor having a plurality of rollers spaced along the conveyer for supporting a conveyer belt. The system includes a plurality of roller monitors and a remote monitor. The roller monitors are located at the rollers, each of the roller monitors having sensors for measuring physical parameters of the rollers and generating measurement data indicative of the current values of the physical parameters, a roller processor connected to the sensors, the roller processor operable to receive the measurement data from the sensors, a roller data storage device connected to the roller processor operable to store the measurement data, a roller communication device connected to the roller processor operable to transmit the measurement data to a remote monitor. The remote monitor is operable to receive the measurement data to generate maintenance information for each of the rollers based on the measurement data.06-09-2011
20100179775Determination of blade vibration frequencies and/or amplitudes - A method is provided for determining vibration frequencies of rotating blades mounted on a rotor which rotates relative to and is supported by a rotor support structure. The method includes the steps of: 07-15-2010
20120310554DETECTING SYSTEM FOR HOST VIBRATION TEST AND RELATED METHOD - A method for host vibration test is disclosed in the present invention. The method includes outputting an initial power spectrum density to a testing platform by a data acquisition device so as to vibrate the testing platform according to the initial power spectrum density. A host is disposed on a supporter, and the supporter is set on the testing platform. The method further includes installing a first accelerometer on the supporter, generating a first power spectrum density according to data detected by the first accelerometer, installing a second accelerometer on the testing platform, generating a second power spectrum density according to data detected by the second accelerometer, and the data acquisition device executing the vibration test of a host according to the first power spectrum density and the second power spectrum density.12-06-2012
20100082274Noise and Vibration Diagnosis Device for Vehicle and Control Method Thereof - A noise and vibration diagnosis device and control method thereof are provided for measuring noise and vibration generated in a vehicle. The device may include a measuring sensor configured to be attached at a predetermined position of a vehicle to measure noise and vibration thereof, a signal input portion to which the noise and vibration signal that is generated from the measuring sensor is inputted, and a control portion configured to receive the signal that is transferred from the signal input portion and compare it with a predetermined reference value to output a replacement signal by which it is determined whether the component on which the measuring device is attached is to be replaced or not in accordance with the comparison result. The noise and vibration causing a dissatisfaction that is expressed by a customer can be diagnosed in a short time, and an objective maintenance service is provided such that the mechanic can provide reliable service to the customer. Also, the diagnosis is performed through a standard process to reduce the maintenance time and the cost thereof, and a data base for the maintenance data can be established such that the maintenance data can be commonly used to provide uniform quality among maintenance centers through a network.04-01-2010
20100082273MODULAR CONDITION MONITORING INTEGRATION FOR CONTROL SYSTEMS - A system, in one embodiment, includes a controller configured to receive sensor signals from a machine system and to control operation of the machine system via actuators. The embodiment also includes function blocks stored and operational in the controller and configured to receive machine condition monitoring information and to calculate vibration parameters based upon the machine condition monitoring information. In another embodiment, the system includes a controller that includes computer code configured to control operation of a machine system via actuators based upon sensor signals. Moreover, the embodiment includes computer code configured to perform vibration monitoring of the machine system, including function blocks configured to receive vibration data and to calculate vibration parameters based upon the vibration data.04-01-2010
20100121584Method and apparatus for ultrasonic characterization of scale-dependent bulk material heterogeneities - Methods and apparatuses are provided for detecting and characterizing heterogeneities within a bulk material that exhibit scale-dependent uniformity represented by locally representative volume elements (LRVEs). The invention is particularly useful in the characterization of local variations of crystallographic texture of metals and alloys, including metallurgical Ti alloys. The invention consists of generating ultrasonic waves through different paths in the object, and detecting differences in time, amplitude and/or phase of the detected frequency components traveling the different paths to characterize a statistical mean dimensions of the LRVEs, for example, by autocorrelation. Mean sizes of the LRVEs in the scan directions can be computed by autocorrelation, and mean sizes in the direction of the propagation can also be approximated.05-13-2010
20110191040Techniques for use with rotor track and balance to reduce vibration - Described are techniques for selecting options used with current sensor data characterizing vibration caused by rotating blades. Sets of other sensor data are evaluated to determine a first of the sets of other sensor data that is a best match for said current sensor data. Each of the sets of other sensor data is associated with one of a plurality of option sets. Each option set includes options used in determining one or more adjustments that may be applied to the blades to reduce vibration. The one or more sets of other sensor data are evaluated to determine a first of the sets of other sensor data that is a best match for said current sensor data. A first of the plurality of option sets associated with said first set of sensor data is used in determining adjustment(s) that may be applied to the blades.08-04-2011
20110137585METHOD AND APPARATUS FOR MEASURING THE PHASE CHANGE OF A SOUND WAVE PROPAGATING THROUGH A CONDUIT - A system for measuring the superposition of a plurality of sound waves propagating within a conduit containing a fluid having a plurality of transducers positioned substantially parallel to the flow direction along the external surface of the conduit. The system includes means for modeling the superposition of a plurality of sound waves as they propagate within the conduit.06-09-2011
20110264387Method for determining the starting instant of a periodically oscillating signal response - A method for determining the starting instant (t10-27-2011
20090299663DIAGNOSTIC METHOD FOR A BALL BEARING, IN PARTICULAR FOR AN ANGULAR-CONTACT BALL BEARING, A CORRESPONDING DIAGNOSTIC SYSTEM, AND USE OF THE DIAGNOSTIC SYSTEM - In a diagnostic method for at least one ball bearing, in particular for an angular-contact ball bearing for bearing a rapidly rotating spindle, mechanical vibration caused by the respective angular-contact ball bearing is acquired by at least one vibration sensor and outputted as a corresponding vibration signal. At least one bearing characteristic, fundamental kinematic frequency dependent on a current bearing rotational frequency is determined by computation. A corresponding bearing frequency in a measurement frequency spectrum of the respective vibration signal is determined by measurement. A first diagnostic message is output when at least one of the determined bearing frequencies deviates by a respective prescribed frequency deviation from the corresponding computational fundamental kinematic frequency.12-03-2009
20100023280Characterizing the response of a device in a computer system to vibration over a frequency range - Some embodiments of the present invention provide a system that characterizes a response of a device in a computer system to vibration over a frequency range. During operation, the device is vibrated at each frequency in a set of frequencies in the frequency range, wherein the device is vibrated at each frequency, one frequency at a time, until a stabilized response of the device is determined. The response of the device to vibration over the frequency range is then characterized based on information related to the stabilized response at each frequency in the set of frequencies.01-28-2010
20110098948Combined Amplitude and Frequency Measurements for Non-Contacting Turbomachinery Blade Vibration - A method and apparatus for measuring the vibration of rotating blades, such as turbines, compressors, fans, or pumps, including sensing the return signal from projected energy and/or field changes from a plurality of sensors mounted on the machine housing. One or more of the sensors has a narrow field of measurement and the data is processed to provide the referenced time of arrival of each blade, and therefore the blade tip deflection due to vibration. One or more of the sensors has a wide field of measurement, providing a time history of the approaching and receding blades, and the data is processed to provide frequency content and relative magnitudes of the active mode(s) of blade vibration. By combining the overall tip deflection magnitude with the relative magnitudes of the active modes, the total vibratory stress state of the blade can be determined.04-28-2011
20110137586WIND TURBINE MONITORING AND ADJUSTING - Systems, devices, and methods are provided for leveling and monitoring a wind turbine tower. An exemplary system may comprise an accelerometer, signal transfer device, signal receiving device and signal display device. In an exemplary embodiment, the system is installed at or near the top of the wind turbine tower. The system maybe permanently installed. The installer may adjust tower mounting nuts to level the tower based on the display device information. In another exemplary embodiment, the system may be used for monitoring tower vibration during wind turbine operation and measuring wind speed during wind turbine operation.06-09-2011
20100262390SYSTEM AND METHOD FOR MODAL IDENTIFICATION USING SMART MOBILE SENSORS - Systems and methods for determining spatially dense dynamic properties of a structure are disclosed. In particular, spatially dense mode shapes are determined using acceleration records collected when one or several sensors are moving. The mobile sensor gathers vibration response data for the structure as the mobile sensor moves over the structure. The vibration response data is used to extract a fine grid of modal coordinates with a reduced number of sensors and without requiring mode shape expansion. The high spatially dense mode shapes can be included as part of accurate numerical models for the structure that can be used for a variety of purposes, such as damage detection, earthquake engineering, wind engineering, and other suitable purposes.10-14-2010
20110313689ACOUSTIC DETECTION FOR RESPIRATORY TREATMENT APPARATUS - Methods and apparatus provide acoustic detection for automated devices such as respiratory treatment apparatus. In some embodiments of the technology, acoustic analysis of noise or sound pulses, such as a cepstrum analysis, based on signals of a sound sensor (12-22-2011
20100036621Characterizing the response of a computer system component to vibrations - Some embodiments of the present invention provide a system that characterizes a response of a component in a computer system to vibrations generated by the computer system. First, the system measures the response of the component to vibrations in a frequency range while the component is located outside of the computer system. The system also measures vibrations generated by the computer system in the frequency range during operation of the computer system, wherein the vibrations are measured at a location in the computer system which is configured to receive the component. The system then characterizes the response of the component to vibrations generated by the computer system based on the measured response of the component to vibrations in the frequency range and the measured vibrations in the frequency range at the location.02-11-2010
20120041695INTEGRATED VIBRATION MEASUREMENT AND ANALYSIS SYSTEM - A vibration data collection system performs an integration or differentiation process on incoming digitized vibration data in real time. The system uses a digital Infinite Impulse Response (IIR) filter running at the input data rate to provide the integration or differentiation function. With this approach, the system reduces hardware complexity and data storage requirements. Also, the system provides the ability to directly integrate or differentiate stored time waveforms without resorting to FFT processing methods.02-16-2012
20120209545METHOD FOR MONITORING THE CONDITION OF A VIBRATION SENSOR - A system and method for monitoring the condition of a vibration sensor in a system. Vibrations are received in the system at one or more vibration sensors. Sensor data is output by the vibration sensor(s). The sensor data includes data representative of the vibrations in the system and data representative of a natural frequency of the corresponding vibration sensor. The sensor data output from the vibration sensor(s) is monitored, and upon a change in the data representative of the natural frequency of a vibration sensor, that vibration sensor is flagged.08-16-2012
20100324839VIBRATORY PIPELINE DIAGNOSTIC SYSTEM AND METHOD - A vibratory pipeline diagnostic system (12-23-2010
20110166807ULTRASONIC INSPECTION METHOD AND ULTRASONIC INSPECTION DEVICE - An ultrasonic inspection method and an ultrasonic inspection device allow three-dimensional inspection data and three-dimensional shape data to be appropriately positioned on a display screen and allow a defect echo and a shape echo to be quickly identified even when information on the relative positions of a probe and an object to be inspected is not provided. The ultrasonic inspection data that is generated from the waveforms of ultrasonic waves received by an ultrasonic probe is compared with a plurality of ultrasonic propagation data pieces calculated by a ray tracing method on the basis of the three-dimensional shape data on an object to be inspected. The position of the three-dimensional inspection data or the three-dimensional shape data is moved relative to the other data position on the basis of the comparison results, thereby displaying the three-dimensional inspection data and the three-dimensional shape data while overlapping each other.07-07-2011
20110166806METHOD AND APPARATUS FOR MEASURING OTOACOUSTIC EMISSION - A method of measuring an otoacoustic emission (OAE) is provided. The method comprises generating a frequency OAE graph with N plot lines, by performing frequency sweeping on N signals having different levels, wherein N is a natural number of at least 2; and when there are plot lines that overlap each other in the frequency OAE graph, compensating values of the N plot lines of the frequency OAE graph in a predetermined frequency section including a frequency section where the plot lines overlap each other.07-07-2011
20110166808METHOD AND SYSTEM FOR IMPROVING MLS-BASED MEASUREMENTS - A measurement systems that reduces spurious artifacts in reflected signals by generating and employing an improved maximum length sequence. Accurate acoustic measurements with both high SNR and low spurious artifacts are made possible by generating Wide MLS (WMLS) which modifies a base MLS by replacing each value with a sequence that includes the value and one or more additional values, where typically the replaced values have opposing polarities and, the additional signals have intermediate values. An exemplary intermediate values can be approximately zero value.07-07-2011
20120059604CONTACTLESS VIBRATION METER - A contactless vibration meter having a magnetic strip, a detector, and a processor is disclosed. The N-pole blocks of the magnetic strip are unequal lengths and the S-pole blocks of the magnetic strip are also unequal lengths, the detector is detecting the N-pole blocks of the magnetic strip with unequal lengths and the S-pole blocks of the magnetic strip with unequal lengths, and the voltage variation due to the change of the magnetoresistance of the detector is calculated by the processor, so as to transfer to corresponding vibrating waveform, thereby being capable of obtaining the vibrating information of the tested object. It is not limited by the space of the factory or the pattern of the tested object, and capable of being attached to detect immediately.03-08-2012
20120016604Methods and Systems for Pointing Device Using Acoustic Impediography - Invention includes a novel pointing device which uses acoustic impediography as a means to locate the position of finger and then uses the said location to control the position of a cursor on a computer screen. In addition, while the finger is touching the sensor the touch-pressure level can be estimated via statistical data evaluation, as average brightness decreases with increasing touch-pressure providing a means for gesturing. This new device has the advantage that it can double as a biometric identification device for verifying the identity of the computer's user.01-19-2012
20110071778Apparatus For Performing Ground Vibration Tests On Airplanes - The invention relates to improved methods and apparatus for performing ground vibration tests (so-called “ground vibration tests”) on an airplane. In the method according to the invention, the airplane is jacked up essentially undamped (“rigidly”) in conventional holding points with lifting devices. For purposes of the ground vibration test, the airplane is then excited to vibrate in a known manner using a plurality of vibration exciters, and the vibrations are acquired with a plurality of measuring transducers, in particular accelerometers. A dynamic vibration model of the airplane theoretically calculated beforehand can here be adjusted. The boundary conditions are removed during or after the ground vibration test, meaning the influence of the lifting device is “mathematically canceled out”, so that the determined measured values reflect the so-called “free-free” state of the airplane, as if the airplane had actually been in free flight during the ground vibration tests.03-24-2011
20120158323METHODS AND SYSTEMS FOR IMPROVED CORRELATION OF SHEAR DISPLACEMENT WAVEFORMS - Methods and systems for improving correlation of shear displacement waveforms are presented. The method includes delivering one or more reference pulses to a plurality of target regions to detect corresponding initial positions. Further, a plurality of pushing pulse segments are delivered to one or more pushing locations, where one or more parameters corresponding to the plurality of pushing pulse segments are adapted for generating a shear displacement waveform with a desired wave shape. Additionally, one or more tracking pulses may be delivered to the plurality of target regions for detecting displacements of at least a subset of the target regions as a function of time. Particularly, the displacements are determined as time samples of the shear displacement waveform. Subsequently, a shift between the shear displacement waveform detected at least two different target regions in the subset of the plurality of target regions is detected.06-21-2012
20120072136APPARATUS AND A METHOD FOR ANALYSING THE VIBRATION OF A MACHINE HAVING A ROTATING PART - An apparatus for analyzing the condition of a machine having a part rotatable with a speed of rotation, includes 03-22-2012
20110066390Systems and Methods For Determining Geologic Properties Using Acoustic Analysis - Systems and methods which determine geologic properties using acoustic analysis are shown. Acoustic signals are collected during processing (e.g., crushing, shearing, striking, compressing, etc.) of geologic media, such as rock samples, for determining geologic properties according to embodiments. The acoustic signals collected may include frequency information, amplitude information, time information, etc. which may be utilized in determining geologic properties, such as geologic media properties (e.g., mineralogy, porosity, permeability, sealing capacity, fracability, compressive strength, compressibility, Poisson's Ratio, Youngs Modulus, Bulk Modulus, Shear Modulus), geologic structure properties (e.g., lithology, seal quality, reservoir quality), geologic acoustic properties (e.g., acoustic logging effectiveness, acoustic response, natural or harmonic frequencies, etc.). Embodiments may be used to provide determination of geologic properties from a variety of geologic media samples, such as cuttings, core samples, etc.03-17-2011
20080300805Non-Contact Measurement System for Accurate Measurement of Frequency and Amplitude of Mechanical Vibration - A non-contact detection technique of measuring both the frequency and the amplitude of periodic movement using a property of nonlinear phase modulation is provided. In one embodiment, the technique can utilize a 22-40 GHz radar sensor. Embodiments do not require calibration of signal amplitude for accurate measurement of movement amplitude. In addition, self-verification is possible. Furthermore, embodiments can provide measurements of frequency and amplitude using a very simple architecture. The method can be used to detect movements with amplitudes larger than 0.335 of the carrier wavelength for a fixed carrier frequency system and 0.214 of the minimum carrier wavelength for a frequency tunable system.12-04-2008
20110106467Method and System for Measuring the Dynamic Response of a Structure During a Machining Process - A machine implement includes sensors that measure a force imparted by the machine implement to a structure during a machining process. A sensor array coupled to the structure measures the vibrational response of the structure to the imparted force. Analysis software compares the imparted force to the vibrational response to generate a transfer function for the structure. Based on the transfer function, a tool-path of the machine implement may be adjusted such that the resulting structure has precise vibrational characteristics that substantially comply with a set of design goals for the structure.05-05-2011
20120316800SYSTEM FOR PREDICTING VEHICLE VIBRATION OR ACOUSTIC RESPONSE - A system for predicting vibration or acoustic responses of a vehicle to a predetermined excitation of a candidate tire of the vehicle includes a first accelerometer for measuring tire responses at a test rig to the predetermined excitation of a reference tire mounted on the rig, a second accelerometer, microphone, or other vibration or acoustic sensor for measuring vibration and acoustic responses at a location on the vehicle to the predetermined excitation of the reference tire mounted on the vehicle, and a computer for calculating transfer functions as a ratio of the vibration or acoustic responses from the second accelerometer, microphone, or other vibration or acoustic sensor divided by the tire responses from the first accelerometer. The computer predicts candidate tire responses, similar to the tire responses of the first accelerometer, of the reference tire mounted on the test rig. The computer predicts vehicle vibration or acoustic responses, similar to the vibration responses of the second accelerometer, of the candidate tire mounted on the vehicle by multiplying the predicted candidate tire responses by the transfer functions.12-13-2012
20120130653SYSTEM AND METHOD OF CONDUCTING REFRACTION ANGLE VERIFICATION FOR PHASED ARRAY PROBES USING STANDARD CALIBRATION BLOCKS - Disclosed is an ultrasonic phased array non-destructive inspection system that includes a PA probe, a conventional PA inspection unit and a refraction angle verification unit. The PA inspection unit is employed to emit ultrasonic angle beams into an AWS 11W Block and to receive a set of corresponding echo signals reflected from the calibration block and to provide time-of-flight (TOF) values corresponding to each angle beam. The refraction angle verification unit then provides a true angle for each of the angle beams based on the ultrasonic and geometric characteristics of the block and the measured TOF values. Other calibration blocks such as the DSC and Nayships blocks can also be used for this purpose.05-24-2012
20120166112ELECTRONIC DEVICE AND VIBRATION TESTING METHOD THEREOF - The disclosure relates to an electronic device with vibration function and a vibration testing method utilized to test the electronic device. The electronic device includes a motor and a storage unit for storing data of a relationship between electrical currents of the motor and vibration frequencies of the motor. The method includes: measuring an electrical current of the motor when the motor vibrates, reading the stored relationship from the storage unit, and acquiring the vibration frequency of the motor corresponding to the measured current according to the measured current and the stored relationship.06-28-2012
20120173172Determination of a vibrational frequency of a wind turbine rotor blade with a sensor device being placed at a structural component being assigned to and/or being part of the rotor - A system for determining a vibrational frequency of a blade being attached to a structural component of a wind turbine is described. The blade is vibrating within a rotational plane of the rotor. A sensor sensitive to a movement along a sensor direction is placed at the structural component so the sensor direction and the direction of the longitudinal extension of the blade have a fixed angular relationship with respect to each other. The sensor is configured to provide a sensor output signal being indicative for the movement of the structural component along the sensor direction. A data processing unit is connected with the sensor and configured to determine the vibrational frequency of the blade based on the sensor output signal and on the fixed angular relationship. Corresponding wind turbine equipped with such a system, method for determining a vibrational frequency of a blade and computer program are provided.07-05-2012
20120173171In-Pavement Wireless Vibration Sensor Nodes, Networks and Systems - Apparatus and methods are disclosed that may be configured to respond to vibrations in a pavement induced by the travel of a vehicle on the pavement. The apparatus may include vibration sensor nodes embedded in the pavement and systems using the response of the sensor nodes to generate vehicle parameters, weight estimates, pavement deflection estimates and vehicle classifications. From these and other data, traffic ticket, tariff and insurance messages about the vehicle may be generated. Processors and processor-units are disclosed. Delivery mechanisms to configure the processor units and entities controlling and/or benefiting from the deliveries are disclosed.07-05-2012
20100049452ULTRASONIC MEASURING DEVICE AND ULTRASONIC MEASURING METHOD - An ultrasonic measurement method, including: receiving a plurality of ultrasonic waves that have been spectrum-spread with different codes by first and second wave-receivers; de-spreading the first and second receive signals respectively with a selected code and a non-selected code; obtaining an amplitude ratio between the produced selected de-spread signal and the non-selected de-spread signal; determining a threshold value based on the amplitude ratio; extracting a signal having an amplitude greater than or equal to the threshold value from the non-selected de-spread signal to thereby produce an interfering signal; spreading the interfering signal with a corresponding non-selected code and then removing the interfering signal from the first and second receive signals to thereby produce first and second receive signals from which the interfering signal has been removed; de-spreading the first and second receive signals from which the interfering signal has been removed each with the selected code to thereby obtain first and second de-spread signals from which the interfering signal has been removed; and calculating the propagation distance and the propagation direction of the selected ultrasonic wave based on points in time at which the first and second de-spread signals arrive at the first and second wave-receivers.02-25-2010
20120253707Device and Method for Quantifying and Analyzing the State of Damage in a Solid Medium - A device and method for assessing the damage state of solid materials and structures subjected to loading. The device includes multiple AE sensors connected to the switch controller/Amplifier/AD convertor, the event sorting module, the spectrum assignment unit, the probability space resolver, the trajectory of damage state generator, power source, and a visual display. The method includes means to assess and analyze performance of solid materials and structures that accounts for the influence of microscopic random damage events statistically, the method including the steps of sorting the electric signals into a series of non-overlapping AE events; determining the spectra of the sorted events; computing the probability distribution of the spectra; computing the probabilistic entropy of the probabilistic distribution; and generating the trajectory of damage state.10-04-2012
20080300804Movement Detection System and Method - A method for detecting movements within a vehicle, includes sensing vibrations inside the vehicle by a first set of sensors and generating a first set of signals representative of the vibrations sensed inside said vehicle. Also simultaneously vibrations are sensed from external disturbances by a second set of sensors and a second set of signals is generated representative of the vibrations sensed from external disturbances. A set of correlation coefficients is determined between signals from the first set of signals and the second set of signals. A statistical analysis is performed of the set of correlation coefficients. Movement based on the statistical analysis is decided.12-04-2008
20120239318SUBJECT INFORMATION ACQUISITION APPARATUS AND SUBJECT INFORMATION ACQUISITION METHOD - A subject information acquisition apparatus includes a first holding member that holds a subject, a probe that receives an elastic wave from the subject through the first holding member, a first holding member deformation amount measuring unit that measures an amount of deformation of the first holding member, and a processing unit that creates an area for generating subject information by using the amount of deformation of the first holding member and position information of the first holding member deformation amount measuring unit and generates an information value of subject information corresponding to the area for generating subject information by using a signal outputted by the probe.09-20-2012
20120330578SEVERITY ANALYSIS APPARATUS AND METHOD FOR SHAFTS OF ROTATING MACHINERY - A method includes receiving one or more vibration signals representing physical vibrations generated by a shaft of a machine during operation. The method also includes determining a rotational speed of the shaft. The method further includes identifying one or more sets of frequency components of the vibration signals based on the speed of the shaft, where each set of frequency components is associated with an operational characteristic of the shaft. In addition, the method includes determining one or more health indicators of the shaft based on relative energy levels of the frequency components in each set of frequency components.12-27-2012
20120330577VIBRATION SEVERITY ANALYSIS APPARATUS AND METHOD FOR ROTATING MACHINERY - A method includes obtaining a baseline vibration level of a machine and normalizing the baseline vibration level with a specified threshold value to generate a normalized baseline vibration level. The specified threshold value is based on a type of the machine. The method also includes obtaining a measurement of an operational vibration level of the machine during its operation, normalizing the measured operational vibration level against the normalized baseline vibration level, and identifying at least indicator of a status of the machine based on the normalized operational vibration level.12-27-2012
20110218744METHOD AND DEVICE FOR ASSESSING THE STRUCTURAL CHARACTERISTICS OF INSTALLED SUPPORTING POLES - The present disclosure relates to a method for automatically assessing structural characteristics of a supporting pole sunk in the ground, including the operational steps of detecting data regarding a pole being assessed, striking at least one blow against said pole, detecting pole oscillations generated by said struck blow(s), analyzing detected oscillations in order to determine at least one significant parameter of the oscillation trend, and comparing said significant parameter(s) with pre-established threshold values in order to obtain a conformity or non-conformity index related to pole characteristics.09-08-2011
20110218743COMPOSITE EVALUATION - A method for evaluating a composite structure includes providing a model of said structure and locally varying a material property to determine complex reflection and transmission coefficients at said locality. From these coefficients at least one ultrasonic response characteristic for said material property can be found and compared to a measured ultrasonic response of a sample to determine a local measure of the material property. This method exploits the fact that certain material properties contribute to the ultrasonic frequency response substantially independently of one another. The frequency response of a region of porosity and of a thick resin layer in particular are evaluated. In one embodiment, the modelled responses are used to provide frequency domain basis functions for material properties, which can in turn be used in a decomposition method.09-08-2011
20110276282Method and Apparatus Using Lateral Access to Obtain Acoustoelastic Extraction of Axial Material Properties - An ultrasound machine processes ultrasonic data according to acoustoelastic properties of the materials to obtain strain information without specific assumptions with respect to the material properties of the measured material or a variety of different material properties normally not obtained by ultrasound machines.11-10-2011
20110320143ULTRASOUND PROBE WITH ACCELEROMETER - An ultrasonic probe (12-29-2011
20120330579System Responsive to Machine Vibrations and Method of Use - A first embodiment of a system for measuring and analyzing a machine property comprises a vibration detector; power source; data transmitter, and first data processor which can obtain and convert sensed vibration data into digital data to be transmitted through the data transmitter to a system server which comprises software for processing and analyzing data comprising the received sensed vibration data. In a second embodiment, the system comprises a vibration sensor and a terminal used to obtain sensed vibration data from the sensor and convert it into digital data to be transmitted through the first data transceiver, and, optionally, to a system server. In this embodiment, data may be presented visually on the user display area and user input received input from the user input area.12-27-2012
20120101748RECORDING MEDIUM FOR ACOUSTIC ANALYSIS PROGRAM, ACOUSTIC ANALYSIS METHOD, AND ACOUSTIC ANALYSIS DEVICE - According to an embodiment, a computer-readable, non-transitory medium storing an acoustic analysis program causing a computer to execute a process, the process including: analyzing propagation of a sound generated within a device in an internal analysis space of the device as a first analysis; converting a radiated sound that indicates a result of analysis executed and has been radiated from the inside to the outside of the device to sound energy; and setting a plurality of virtual sound sources to be used as input of a second analysis which is different from the first analysis method on the basis of the sound energy which has been converted from the radiated sound by executing the converting process.04-26-2012
20100198534SYSTEM AND METHOD FOR MONITORING THE CONDITION OF A GEAR ASSEMBLY - A system and method for monitoring the condition of a gear assembly analyzes a signal output by a vibration detector that is attached to the gear assembly. Each time that an amplitude of the signal output from the vibration detector exceeds a threshold value, the system assumes that a debris particle has passed between meshing parts of the gear assembly. The number of times that this occurs, and possibly the amplitude of the vibrations are analyzed to determine a condition of the gear assembly, and possibly a damage index. This system and method are particularly applicable to planetary gear arrangements where the vibration detector can be mounted on a fixed ring gear of the gear assembly, or a structure upon which the fixed ring gear is mounted.08-05-2010
20100169028PHYSICAL QUANTITY DETECTION CIRCUIT AND PHYSICAL QUANTITY SENSOR DEVICE - An analog-to-digital conversion circuit converts a monitor signal and a sensor signal from a physical quantity sensor to a digital monitor signal and a digital sensor signal, respectively. A correction circuit generates a digital correction signal by adjusting the amplitude of the digital monitor signal and the phase difference between the digital monitor signal and the digital sensor signal, and corrects the digital sensor signal using the digital correction signal. A detector circuit detects a physical quantity signal corresponding to the physical quantity given to the physical quantity sensor from the digital sensor signal corrected by the correction circuit.07-01-2010
20130013229INPUT DEVICE, INPUT METHOD AND MEDIUM - An input device comprises: a detection unit that detects as detection data a vibration that is generated by tapping on a body of a user and transmitted through the body of the user; and an input information identification unit that refers to the detection data and that identifies a tap position based on a fact that the detection data varies according to a length of a vibration transmission path from the tap position to the detection unit.01-10-2013
20080221811METHOD AND APPARATUS FOR IDENTIFYING A REGION OF INTEREST OF TRANSIENT VIBRATION DATA REQUIRING ANALYSIS - A method and apparatus identifies a region of interest of transient vibration data needing analysis and provides context and construction for analytical plots. The method comprises providing transient data and determining a region of interest of the transient data, specifying a construction mode corresponding to a derived graphical display of the transient data and specifying a construction parameter corresponding to the specified construction mode. The method also comprises processing the transient data to produce at least one derived plot based on the transient data, the region of interest, the specified construction mode, and the specified construction parameters. This method may be performed by a graphical tool having a hardware module and a software module. The hardware module including a processor, a memory, a display, and a communicator, and the software module including a plotting module and a plotcontrol module.09-11-2008
20120253708VIBRATION DETERMINATION METHOD AND VIBRATION DETERMINATION DEVICE - When generation of a chatter vibration is detected, a parameter calculation device calculates a first frequency range and a second frequency range. A determination validity is calculated in consideration of a rotation speed detection resolution and a frequency resolution, and based on a ratio of a frequency range of rotational-period forced chatter vibration to a frequency range of regenerative chatter vibration. It is determined based on the determination validity whether the generated chatter vibration is regenerative chatter vibration, rotational-period forced chatter vibration, or flute-passage-period forced chatter vibration.10-04-2012
20130096852ULTRASONIC TOMOGRAPHY SYSTEMS - A system including a segmented transducer probe is provided. The segmented transducer probe includes a plurality of transducer segments adapted to transmit ultrasonic excitation signals into a test specimen and to receive echo signals resulting from the interaction of the ultrasonic excitation signals and the test specimen. The system also includes a processing system adapted to receive data from the segmented transducer probe that corresponds to the received echo signals and to utilize tomographic reconstruction methods to reconstruct an image corresponding to at least one volumetric slice of the test specimen.04-18-2013
20130103326METHOD FOR EARLY WARNING CHATTER DETECTION AND ASSET PROTECTION MANAGEMENT - The invention embodies the application of different combinations of the monitoring and data processing aspects as a means to develop an early warning chatter alarming system. Configuring an early warning chatter alarming system can be as simple as using nσ alarm settings to develop an alarming strategy from different trend conditions such as overall RMS, selected vibration frequencies, slope analysis, and wavelet analysis. A higher level of alarming is provided by using a time integrated approach to account for both intensity of the alarm variable and duration. Combining these different aspects with a predictive model incorporates process-operating conditions to enhance the alarming sensitivity for earlier detection and reduce false positives. Finally, combining the different alarming aspects with a rule-based decision making approach such as fuzzy logic allows alarming based on qualitative analysis of different data streams.04-25-2013
20130179098PROCESSING SIGNALS ACQUIRED DURING GUIDED WAVE TESTING - Processing signals acquired during guided wave testing A method of processing signals acquired during guided wave testing of an elongate member (07-11-2013
20110276283ULTRASOUND SYSTEM AND SIGNAL PROCESSING UNIT CONFIGURED FOR TIME GAIN AND LATERAL GAIN COMPENSATION - The present invention provides an ultrasound system, which comprises: a signal acquiring unit to transmit an ultrasound signal to an object and acquire an echo signal reflected from the object; a signal processing unit to control TGC (Time Gain Compensation) and LGC (Lateral Gain Compensation) of the echo signal; a TGC/LGC setup unit adapted to set TGC and LGC values based on TGC and LGC curves inputted by a user; and an image producing unit adapted to produce an ultrasound image of the object based on the echo signal. The signal processing unit is further adapted to control the TGC and the LGC of the echo signal based on the TGC and LGC values set by the TGC/LGC setup unit.11-10-2011
20080201089SYSTEM AND METHOD FOR DETERMINING NEUTRAL TEMPERATURE OF A METAL - A system for determining a neutral temperature of a metal specimen includes an excitation assembly disposed adjacent to the metal specimen for inducing vibrations to the metal specimen, at least one vibration detector disposed adjacent to the metal specimen to measure the induced vibrations transmitted in the metal specimen, a temperature sensor disposed adjacent to the metal specimen to measure temperature of the metal specimen, and a control/acquisition system for control of the excitation assembly and acquisition of data from the excitation assembly, the at least one vibration detector, and the temperature sensor, wherein the control/acquisition system calculates damping coefficients for each of the induced vibrations and determines a peak damping coefficient corresponding to the neutral temperature of the metal specimen based upon the acquired data.08-21-2008
20080201088SYSTEM AND METHOD FOR MONITORING A PROCESS - A system and method for monitoring a process. The system includes a processing chamber for receiving a workpiece, a processor coupled to the processing chamber, and at least one surface acoustic wave (SAW) device coupled to the workpiece, and wherein the processor utilizes the at least one SAW device to determine the conditions of the workpiece during processing. According to the method and system disclosed herein, the present invention provides inexpensive, accurate, and abundant information to control a process.08-21-2008
20130090868METHOD FOR MEASUREMENT OF VIBRATION PROPERTY OF STRUCTURE, AND VIBRATION PROPERTY MEASUREMENT DEVICE - A method for measuring a vibration property of a structure by applying an impulse input to the structure, which comprises: step (A) of pulse-irradiating the surface of the structure or a part adjacent to the surface with a laser beam to apply an impulse input to the structure and measuring a response output from the structure to which the impulse input has been applied; step (B) of determining the relationship between the laser intensity of the laser beam and the impulse input induced by the laser beam by a rigid pendulum method and determining an impulse input F corresponding to the laser intensity of the laser beam, with which the structure has been pulse-irradiated, based on the relationship; and step (C) of measuring the vibrational amplitude value of frequency response of the structure from the response output measured in step (A) and the impulse input F measured in step (B).04-11-2013
20100286934Method for determining blade mistuning on integrally manufactured rotor wheels - For determining production-inherent mistuning of integrally manufactured rotor wheels (blisks) on the basis of the identification of blade natural frequencies, the individual blades are excited independently of each other and the vibratory response is measured for the calculation of the respective blade natural frequency and of mistuning. During measurement the blades not under investigation are additionally mistuned by temporarily applying an identical extra mass to each of them, such that coupling effects disturbing the measurement of the vibratory response of the excited blade are shifted away from the natural frequency-near range of the blades and hence eliminated.11-11-2010
20110238335COMPONENT BALANCING ON A CNC MACHINING CENTER - The present invention broadly comprises a method of establishing parameters of a balancer to predict part unbalance on a computer numerically controlled machine comprising the steps of varying unbalance of the balancer and measuring vibration to develop influence parameters of the balancer, varying unbalance of a test part and measuring vibration to develop influence parameters of the test part, comparing the influence parameters of the balancer and the test part, and, determining a range of test part unbalance over which the influence parameters of the balancer and the test part approximately match. The present invention also broadly comprises a system for machining and balancing a workpiece comprising a computer numerically controlled machine, and, a rotating balancer assembly arranged to determine a measurement of unbalance when a first initial vibration measured by a first vibration sensor exceeds a limited range of vibration sensed by the first vibration sensor.09-29-2011
20120278010OBJECT INFORMATION ACQUIRING APPARATUS - The present invention provides an object information acquiring apparatus having: a probe which includes a plurality of elements that receive an acoustic wave propagated through an object to generate element signals; a pseudo-signal generator which computes a phase shift between element signals received by at least two elements out of the plurality of elements, and generates a pseudo-signal assumed to be received at a position on the probe that is different from the positions of the elements which have received the element signals in use a result of computation; and a signal processor which obtains object information based on the element signals received by the plurality of elements and the pseudo-signal.11-01-2012
20130158900ULTRASONIC DIAGNOSTIC APPARATUS AND EVALUATION CALCULATION METHOD - An ultrasonic diagnostic apparatus including: a two-dimensional elasticity image forming unit that calculates elasticity frame data indicating the elasticity distribution measured by scanning an object in a three-dimensional manner using an ultrasonic wave; an elasticity volume data generation unit that generates elasticity volume data by collecting the plurality of elasticity frame data items; a three-dimensional elasticity image forming unit that forms a three-dimensional elasticity image by performing volume rendering of the elasticity volume data; and a quality calculation unit that calculates a volume evaluation value indicating the quality of the elasticity volume data on the basis of an autocorrelation value between a pair of tomographic frame data items, which are a basis for calculating the elasticity frame data, and a frame evaluation value indicating the quality of the elasticity frame data.06-20-2013
20130211748METHOD FOR MEASURING VISCOELASTIC MODULUS OF SUBSTANCE, AND APPARATUS FOR MEASURING VISCOELASTIC MODULUS OF SUBSTANCE - [Problem] A method for measuring a viscoelastic modulus of a substance and an apparatus for measuring the viscoelastic modulus of the substance are provided for allowing information on viscoelasticity of an adsorption substance to be expressed by moduli G′ and G″ which are generally used when expressing viscoelasticity, and for further allowing calculation of the viscoelastic modulus in real time.08-15-2013
20130211747Method of Interrogating a Sensor of Surface Acoustic Wave Type - A method of interrogating sensors of SAW type, which allows notably the gathering of physical measurements of parameters carried out by SAW sensors, the method for gathering the measurement of an SAW sensor comprising a first step of generating and emitting an electromagnetic signal corresponding to the dilated time-reversal of a dilation coefficient k, of an impulse response signature which is characteristic of the SAW sensor, a second step of gathering a signal received as echo originating from the SAW sensor, a third step of determining a maximum of cross-correlation of the signal received as echo during the second step, the first step being applied with a set of values of the dilation coefficient k in a determined domain, the measurement of a physical parameter then being determined by the dilation coefficient k for which the power or the amplitude of the signal gathered as echo is a maximum.08-15-2013

Patent applications in class Vibration detection