Entries |
Document | Title | Date |
20080204041 | Differential Vector Network Analyzer - A measurement and correction method provides for a complete full correction of a true-mode system using only the single ended error matrix developed for 4 port correction of single ended measurements. The degree of misalignment of the balanced sources may be determined from these measurements. | 08-28-2008 |
20080204042 | NETWORKED POWER LINE PARAMETER ANALYSIS METHOD AND SYSTEM - A method and apparatus is disclosed for determining power line parameter of a system. Specifically, there is provided a system for determining comprising a networked device including a voltage perturbation circuit coupled to a voltage source and configured to perturb the waveform of the voltage source, and a voltage measurement circuit coupled to the voltage source and configured to transmit voltage measurements of the waveform over a network and a remote monitoring unit, coupled to the network, and configured to receive the voltage measurements over the network and to calculate an incident energy using the voltage measurements. | 08-28-2008 |
20080224716 | Method and System For Determining Freshness and Palatability and Assessing Organ Vitality - A method and system to determine freshness and palatability (tenderness, juiciness, and flavor) of live foodstuffs (meat, fish, fowl, fruit and vegetables) including the steps of; utilizing bioelectrical impedance analysis in a biological subject model for measurement and composition analysis; and a system of using the results of the utilizing step procedure to illustrate an objective scale of palatability; a ‘Palatability Index’. Also a method of whole body and regional organ and tissue vitality assessment in a biological entity, human, animal, fruit or vegetable, including the steps of: utilizing bioelectric impedance analysis in a biological model for composition analysis; and using the results of the utilizing step to provide an objective assessment of volume and distribution of fluid and tissues, and electrical health of cells and membranes of the organ or tissue. | 09-18-2008 |
20080238442 | DIFFERENTIAL SIGNALING SYSTEM AND FLAT PANEL DISPLAY WITH THE SAME - A differential signaling system, wherein a first wiring and a second wiring are coupled between a sending end and a receiving end as a differential signal line. A termination resistor is coupled between the first wiring and the second wiring in the receiving end side. A test circuit is coupled to the termination resistor in parallel, and amplifies and detects a variation of a differential impedance due to the differential signal line. The test circuit includes: a differential test amplifier for amplifying a variation in the differential impedance of the first wiring or the second wiring; a switching unit installed at an input terminal of the differential test amplifier for controlling an operation of the differential test amplifier; and a peak detector for converting an output signal of the differential test amplifier into a direct current component; and a phase detector for detecting a skew, a time delay, and/or a phase difference of a signal inputted to the differential signal line. | 10-02-2008 |
20080238443 | DIFFERENTIAL SIGNALING SYSTEM AND FLAT PANEL DISPLAY WITH THE SAME - A differential signaling system, wherein a first wiring and a second wiring are coupled between a sending end and a receiving end as a differential signal line. A termination resistor is coupled between the first wiring and the second wiring in the receiving end side. A test circuit is coupled to the termination resistor in parallel, and amplifies and detects a variation of a differential impedance due to the differential signal line. The test circuit includes: a differential test amplifier for amplifying a variation in the differential impedance of the first wiring or the second wiring; a switching unit installed at an input terminal of the differential test amplifier for controlling an operation of the differential test amplifier; and a peak detector for converting an output signal of the differential test amplifier into a direct current component. | 10-02-2008 |
20080265910 | Line impedance measurement method and system - A technique is disclosed for determining capacitive, inductive, and resistive components of power line impedance. A measurement circuit switches a burden resistor between power line conductors to cause a droop in a voltage waveform. The voltage waveform is sampled prior to inclusion of the resistor in the circuit, as well as after to identify the droop. The short circuit between the power lines is then removed by opening the circuit and a first effective capacitance in the test circuitry causes a resonant ring due to the inductive component of the power line impedance. The process is repeated a second time with a second effective load capacitance enabled in the test circuitry to cause a second resonant ring. Based upon the frequency of the rings and the voltage measurements, the capacitive, inductive, and resistive components of power line impedance can be computed. | 10-30-2008 |
20090102491 | MULTIPORT TEST-SET FOR SWITCH MODULE IN NETWORK ANALYZER - A system for measuring a multiport device connected to a network analyzer via a test-set comprising a multiport network analyzer; a test-set having multiple real switches wherein at least one set of real switches is capable of being connected together as needed between selection terminals; and a device for controlling the network analyzer and the test-set, wherein two or more predetermined real switches that have been connected together, including at least one real switch with an open terminal, are regarded as one imaginary switch, and the control device controls the selection status of the real switches related to the imaginary switch based on the combination of terminals to which electricity is to be conducted as instructed by the user for this imaginary switch. | 04-23-2009 |
20090115427 | System and Method For Determining The Impedance of a Medium Voltage Power Line - A system and method of detecting changes in the impedance of a segment of medium voltage power line is provided. In one embodiment, the method comprises receiving voltage data comprising data of the voltage of the power lines at locations at a plurality of different points in time, receiving current data that comprises data of the current flowing between adjacent locations at the plurality of points in time, intermittently determining an impedance of the power lines between adjacent locations based on the voltage data and current data, monitoring the impedance of the power lines between adjacent locations over time, and providing a notification of a change in the impedance of a power line between adjacent locations upon detection of a change in the impedance beyond a threshold change. | 05-07-2009 |
20090289637 | System and Method for Determining the Impedance of a Medium Voltage Power Line - A system and method of using a computer system to provide utility information related to a plurality of underground power line cable segments connected on opposite ends to different distribution transformers is provided. In one embodiment the method comprises monitoring the impedance of each of the plurality of underground power line cable segments over time, detecting a change in the impedance of a set of the plurality of underground power line cable segments, storing in a memory information sufficient for identifying each underground power line cable segment of the set of the plurality of underground power line cable segments for which a change in impedance is detected, generating a report that identifies the set of the plurality of underground power line cable segments for which a change in impedance is detected, and outputting the report. | 11-26-2009 |
20100085065 | PASSIVE AGENT SYSTEM IMPEDANCE MONITORING STATION AND METHOD - This invention relates to a hybrid passive agent system impedance monitoring station and method. The method of monitoring impedance of an electrical system includes the steps of providing an impedance monitoring station adapted to test and monitor system impedance, solving for system impedance in a time domain, solving for system impedance in a frequency domain, and determining a time domain driving point impedance and a frequency domain driving point impedance to identify the impedance of the system. | 04-08-2010 |
20100117659 | CALIBRATION AND COMPENSATION FOR ERRORS IN POSITION MEASUREMENT - Methods and systems method for sensing a position of an object in a body include positioning a probe in the body, making measurements of mapping electrical currents passing between at least a first electrode on the probe and a plurality of second electrodes on a surface of the body, calibrating the measurements so as to compensate for one or more non-ideal features of the measurements including effects of system-dependent electrical coupling to one or more devices other than the first electrode and the second electrodes, and computing the position of the probe in the body using the calibrated measurements. | 05-13-2010 |
20100301875 | TUNER CHARACTERIZATION METHODS AND APPARATUS - Embodiments include methods and apparatus for characterizing a tuner. For a given tuner, a processing system is adapted to measure scattering parameters for a plurality of characterization points that are non-uniformly distributed across a Smith chart, and to store the scattering parameters in a tuner characterization file. Interpolation and extrapolation processes are performed to determine additional scattering parameters for a plurality of additional characterization points, which are also stored in the tuner characterization file. | 12-02-2010 |
20110089955 | Element Substrate, Inspecting Method, and Manufacturing Method of Semiconductor Device - A substrate including a semiconductor layer, where characteristics of an element can be evaluated with high reliability, and an evaluating method thereof are provided. A substrate including a semiconductor layer of the invention has a closed-loop circuit in which an antenna coil and a semiconductor element are connected in series, and a surface of an area over which the circuit is formed is covered with an insulating film. By using such a circuit, a contactless inspection can be carried out. Further, a ring oscillator can be substituted for the closed-loop circuit. | 04-21-2011 |
20110121839 | IMPROVEMENTS IN THE DETERMINATION OF AT LEAST ONE VALUE ASSOCIATED WITH THE ELECTROMAGNETIC RADIATION OF AN OBJECT UNDER TEST - The invention relates to a device ( | 05-26-2011 |
20110128015 | Foreign Object Detection in Inductive Coupled Devices - A primary device for inductive power transfer to a secondary device is disclosed. The primary device includes a primary coil, the primary device being configured to (i) operate in a first mode during which the primary coil transfers power through inductive coupling to the secondary device, and (ii) operate in a second mode during which a foreign object is detected. The primary device further includes a primary controller configured to operate the primary coil (i) using a first frequency during the first mode, and (ii) using a second frequency during the second mode. A method to detect a foreign object which is in proximity of an inductively coupled environment of a primary device is also disclosed. | 06-02-2011 |
20110156720 | PORTABLE PARTIAL DISCHARGE DETECTION DEVICE - A partial discharge detection device for detecting and measuring partial discharges in electric systems or components, which delivers signals having a form much resembling that of the radiated pulse, for improved identification and analysis. The device is of small size, totally insulated and self-powered, and allows measurements to be performed with the highest safety with no need for direct connection, thereby allowing operators to stand at a distance and avoid any system shutdown while making measurements. Furthermore, it can also detect and deliver the sync signal, which is obtained by picking up the supply voltage of the discharge generating components. | 06-30-2011 |
20110156721 | PASSIVE MICROWAVE FIRE AND INTRUSION DETECTION SYSTEM - A passive microwave receiver array, operating in the one meter to sub-millimeter wavelengths range and including an internationally protected range of frequencies of varying bandwidth, may be used for fire and intrusion detection. One or more receiver array can be used to provide a plurality of frequency ranges that can be detected. In an interior installation, one or more receiver array can be placed inside a wall. In other embodiments, the receiver and array can be in the form of a hand-held or wearable device. This method and apparatus achieves high performance by exploiting conventional low noise amplification block conversion circuits and provides the detection of thermal signals through clear, smoky, misty, or environmentally untenable conditions as well as the detection of fire and intrusion events through a non-metallic wall. | 06-30-2011 |
20110169504 | METHOD AND APPARATUS FOR MEASURING BEARING CURRENTS IN AN ELECTRICAL MACHINE - The present disclosure relates to a measuring bearing currents in an electrical machine. According to exemplary embodiments, radio frequency signals that are generated by electric discharges are detected by an antenna near the bearing. A synchronizing signal is combined with the origin of the bearing current and signal triggered by the synchronizing signal is measured. | 07-14-2011 |
20110175625 | ELECTROMAGNETIC BODY SCANNING SYSTEM, A METHOD AND A COMPUTER PROGRAM PRODUCT - The invention relates to an electromagnetic body scanning system that comprises a measuring system for measuring data of radio waves scattered by a body in two distinct subbands; and a computer system. The computer system is arranged for constructing a first image of the body using the measured data, generating synthetic scattered data of the body in a frequency range outside the subbands, and constructing a second image of the body using both the measured data and the synthetic data. The step of constructing a first image comprises matching an image to a human model. | 07-21-2011 |
20110175626 | PORTABLE DEVICE WITH PROXIMITY SENSORS - A portable device with a proximity sensor is provided. The portable device with a proximity sensor of the present invention includes a shielding plate for shielding impedance applied in a direction opposite to the direction that the proximity sensor detects the proximity such that the proximity sensor is not affected by a change in the surrounding environment and can detect the proximity at the same sensitivity at all times. Moreover, when the portable device is placed upside down on a conductive surface that causes low impedance, a proximity sensor placed adjacent to the conductive surface is deactivated to prevent malfunction. | 07-21-2011 |
20110181299 | ELECTRIC FIELD WHISTLE - In one embodiment, an electric field sensor is provided including an elongated conductor; a circuit including an input and an output connected across the elongated conductor wherein said circuit includes a DC to AC signal converter; wherein said elongated conductor is operative to impose a DC signal on said circuit input in response to being exposed to an electric field and broadcast an AC signal converted from said DC signal in response to said electric field being greater than a threshold level. | 07-28-2011 |
20110199097 | Sensor system with reduced sensitivity to sample placement - The present invention relates to the non-invasive analysis of materials in both in-vivo and ex-vivo configurations that show reduced sensitivity to sample placement within the sample measurement location. Embodiments of the apparatus make use of paired magnetic configurations and/or paired electrode configurations. Methods are described that compensate for the variation in sample size, and volume to give accurate and repeatable results. | 08-18-2011 |
20110241699 | DETECTING APPARATUS AND IMAGING APPARATUS - A detection apparatus and an imaging apparatus are capable of accurately conducting non-destructive observation of a target by using an incoherent electromagnetic wave. The detection apparatus has a generating section, a first coupler section, a delaying section, a second coupler section and a signal processing section. The generating section | 10-06-2011 |
20110241700 | CAPACITATIVE SENSOR DEVICE - A capacitive sensor device is provided, especially for determining a rotational frequency of a rotary body, for example of a washing drum and for detecting the amount and/or of the humidity grade of a laundry situated in the washing drum. | 10-06-2011 |
20110241701 | ELECTROMAGNETIC WAVE INFORMATION DETECTION APPARATUS AND ELECTROMAGNETIC WAVE INFORMATION DETECTION METHOD - Disclosed is an electromagnetic wave information detection apparatus, including a photoelectric converter including first and second electrode layers; a charge generation layer that generates positive and negative charges by irradiation of an electromagnetic wave; and a charge transport layer; an electric potential imparting unit that imparts electric potentials to the first and second electrode layers; a detection unit; and a control unit controlling the electric potential imparting unit and the detection unit such that the electric potentials of the first and second electrode layers are equalized during a predetermined period of time between a process of imparting detection electric potentials to the first and second electrode layers to detect information carried by an electromagnetic wave of a previous irradiation and a process of imparting the detection electric potentials to the first and second electrode layers to detect information carried by an electromagnetic wave of a subsequent irradiation. | 10-06-2011 |
20110267074 | METHOD OF MEASURING A MULTIPHASE FLOW - A method of measuring the permittivity and/or conductivity of a multiphase fluid flowing through a conduit is provided. The method includes the steps of measuring the signal from a first electromagnetic transmitter to a first electromagnetic receiver separated by a first distance, measuring the signal from the first electromagnetic transmitter to a second electromagnetic receiver separated by a second distance, measuring the signal from a second electromagnetic transmitter to the first electromagnetic receiver separated by a distance substantially equal to the second distance, measuring the signal from the second electromagnetic transmitter to the second electromagnetic receiver separated by a distance substantially equal to the first distance, and wherein the first and second distances are substantially different. This is followed by the step of combining the four signals to obtain a measurement of the phase-shift and amplitude-attenuation substantially independent of the gain values applied to the receivers and transmitters to provide an estimate of the mixture permittivity and/or conductivity of the multiphase fluid. | 11-03-2011 |
20110267075 | METHOD OF MEASURING SPECIFIC ABSORPTION RATE OF ELECTROMAGNETIC WAVES - Disclosed is an SAR measurement method that is capable of securing sufficient power within a short period of time and always maintaining the intensity of measurement signals irrespective of the measurement frequency. With the SAR measurement method, a plurality of measurement modules each with a control unit for processing location information and SAR measurement values, a memory unit for storing data, an antenna for making signal transception with the external, and a storage battery charged by way of inductive power are prepared. Thereafter, the plurality of measurement modules are arranged and installed within a phantom formed with a homogeneous material that conforms to the electrical characteristics of human body tissue. An electronic product to be measured in SAR is mounted at a predetermined location of the phantom with a predetermined posture. A high frequency of several hundred megahertz (MHz) to several hundred gigahertz (GHz) is scanned toward the phantom. The electronic product is operated with a predetermined pattern during a predetermined period of time. A measurement controller receives the data stored at the respective measurement modules to download and process the data, thereby verifying the SAR of the electronic product. | 11-03-2011 |
20110291671 | BIDIRECTIONAL WIRELESS ELECTRICAL ENERGY MONITORING SYSTEM - The present invention relates to the technical field of energy monitoring system, and particularly to a bidirectional wireless electrical energy monitoring system which comprises a bidirectional wireless electrical energy monitoring apparatus and a bidirectional wireless electrical energy monitoring switchgear; the bidirectional wireless electrical energy monitoring apparatus comprises a first wireless bidirectional module for receiving a current signal from the bidirectional wireless electrical energy monitoring switchgear and transmitting a control signal to the bidirectional wireless electrical energy monitoring switchgear; the bidirectional wireless electrical energy monitoring switchgear comprises a second wireless bidirectional module for receiving the control signal from the bidirectional wireless electrical energy monitoring apparatus and transmitting the current signal of electrical equipment to the second wireless bidirectional module of the bidirectional wireless electrical energy monitoring apparatus; bidirectional wireless connection is realized between the bidirectional wireless electrical energy monitoring apparatus and the bidirectional wireless electrical energy monitoring switchgear through the first wireless bidirectional module and the second wireless bidirectional module. The present invention may realize the bidirectional signal transmission, bidirectional control and remote control between the bidirectional wireless electrical energy monitoring apparatus and the bidirectional wireless electrical energy monitoring switchgear. | 12-01-2011 |
20110304345 | POSITION SENSOR - A position sensor comprising two coils, the first coil (transmitting coil | 12-15-2011 |
20110316562 | DISPLACEMENT SENSOR - A linear capacitance displacement transducer ( | 12-29-2011 |
20120001644 | SPATIAL TRACKING SYSTEM AND METHOD - The specification discloses a simple and effective system for tracking position and rotation of an object or portable device located within an electromagnetic field. The electromagnetic field may be produced by a primary coil, which inductively couples with one or more secondary coils located within a portable device. The relative strength of this inductive coupling may be used to determine the position, rotation, or both of the portable device relative to the primary coil. | 01-05-2012 |
20120007606 | System and method for providing scanning polarized reference sources - A method of determining an angular orientation of a sensor relative to a source including the steps of amplitude modulating at least two synchronized polarized Radio Frequency (RF) carrier signals with a predetermined relationship between their amplitude modulation of their electric field components and their polarization states to provide a scanning polarized RF reference source with a desired scanning range, pattern and frequency; detecting the scanning polarized RF reference source at the sensor; and determining the orientation of the sensor based on the detected scanning polarized RF reference source. Similar methods are also provided for determining an angular orientation and/or position of a sensor relative to two or more sources, aligning a mobile sensor relative to a source and homing a sensor relative to a predetermined plane and/or point. | 01-12-2012 |
20120013352 | Multipoint Voltage And Current Probe System - A metrology system monitors radio frequency (RF) power at a plurality of locations in a circuit. The system includes a plurality of RF sensors that generate respective analog signals based on electrical properties of the RF power, a multiplexing module that generates an output signal based on the analog signals, and an analysis module that generates messages based on the output signal. The messages contain information regarding the electrical properties that are sensed by the plurality of RF sensors. | 01-19-2012 |
20120032689 | Blade tip clearance measurement sensor for gas turbine engines - An electromagnetic field sensor assembly for blade tip clearance measurement in a gas turbine engine is disclosed that includes a ceramic sensor body, a multi-layered wire coil wound about a distal end portion of the sensor body for producing an electromagnetic field, a ceramic well enclosing the sensor body and the coil, and a metallic housing surrounding the well and having an open distal end. | 02-09-2012 |
20120032690 | PROXIMITY SWITCH - Disclosed is a proximity switch provided with an actuator unit and a sensor unit. The sensor unit is provided with an antenna coil, a transmitting circuit which transmits electromagnetic waves at a constant frequency to the antenna coil, a receiving circuit which detects external signals received by means of the antenna coil, and control circuits. The actuator unit is provided with an antenna coil, a power supply circuit which rectifies an electromotive force generated in the antenna coil, and a signal processing circuit which receives power supply from the power supply circuit, performs frequency-dividing to the signals received by means of the antenna coil, and transmits the signals from the antenna coil after the frequency-dividing. The control circuit of the sensor unit has memory for registering the frequency of the signals transmitted from the actuator unit. The control circuit determines whether the actuator unit is in proximity to the sensor unit or not by checking the received signals detected by means of the receiving circuit with the operations of the transmitting circuit and the frequency registered in the memory. | 02-09-2012 |
20120038370 | METHOD FOR FREQUENCY DETECTION AND DETECTING VARIATION OF FREQUENCY - Method for frequency detection and detecting variation of frequency is disclosed. The method comprises the following steps. First of all, a pointer is provided over an electromagnetic position detection apparatus, wherein the pointer emits an electromagnetic signal with a frequency f | 02-16-2012 |
20120056628 | Propagation Time Measuring Method for Determining a Distance - An apparatus for ascertaining and monitoring a fill level and includes a transmitting/receiving unit and a delay circuit. The delay circuit includes at least a sampling clocking oscillator, which produces a sampling signal having a sampling frequency, a transmission clocking oscillator, which produces a pulse repetition signal having a pulse repetition frequency and a frequency converter, which produces by means of sequential sampling a difference signal. The apparatus further includes a control/evaluation unit, which determines on the basis of travel time the fill level. Provided on the control/evaluation unit is an external clocking input, which is connected via a clocking line with a first clocking output of the sampling clocking oscillator or with a second clocking output of the transmission clocking oscillator. A stabilized and cost-favorable control circuit for producing an intermediate frequency signal with a highly accurately determinable, transformation factor results. | 03-08-2012 |
20120112764 | METHOD OF MAKING A FINGER SENSOR PACKAGE AND ASSOCIATED DEVICES - A method of making finger sensor packages may include advancing a flexible circuit tape along a predetermined path of travel. The flexible circuit tape may include a flexible layer and conductive traces thereon defining individual flexible circuits. The method may include, as the flexible circuit tape is advanced along the path of travel, securing a respective finger sensing integrated circuit (IC) and surrounding sensor package frame to each flexible circuit, applying at least one fluid fill material adjacent each finger sensor IC while using the corresponding sensor package frame as a dam to thereby define finger sensor packages, and stamping out the finger sensor packages from the flexible circuit tape to form at least one flush common edge of each sensor package frame and individual flexible circuit. | 05-10-2012 |
20120126825 | SENSOR ASSEMBLY AND METHODS OF MEASURING THE PROXIMITY OF A COMPONENT TO AN EMITTER - A method for measuring a proximity of a component with respect to an emitter is provided. The method includes transmitting at least one microwave signal having a plurality of frequency components within a predefined frequency range to the emitter. At least one electromagnetic field is generated by the emitter from the microwave signal. A load is then induced to the emitter by an interaction between the component and the electromagnetic field, wherein at least one loading signal representative of the loading is reflected within a data conduit from the emitter. Moreover, the loading signal is received by at least one signal processing device. The proximity of the component with respect to the emitter is measured by the signal processing device based on the loading signal. | 05-24-2012 |
20120126826 | Sensor Assembly And Method Of Measuring The Proximity Of A Machine Component To A Sensor - A microwave sensor assembly includes a signal processing device for generating at least one microwave signal that includes a pattern of frequencies and at least one probe coupled to the signal processing device. The probe includes an emitter configured to generate an electromagnetic field from the at least one microwave signal, wherein the emitter is detuned when an object is positioned within the electromagnetic field such that a loading signal is reflected from the emitter to the signal processing device. | 05-24-2012 |
20120126827 | Sensor Assembly And Methods Of Adjusting The Operation Of A Sensor - A microwave sensor probe includes a probe housing, an emitter body coupled to the probe housing, and an emitter coupled to the emitter body. The emitter is configured to generate an electromagnetic field from at least one microwave signal. At least one electromagnetic absorbent member is configured to absorb at least one of a current transmitted through the emitter and an electromagnetic radiation generated by the emitter. | 05-24-2012 |
20120126828 | ELECTROMAGNETIC SENSOR FOR USE IN MEASUREMENTS ON A SUBJECT - A sensor unit for use in measurements on a subject is presented. The sensor unit includes a near field electromagnetic sensor and a flexible signal transmission structure, which are integral with one another by means of at least one common continuous surface. The flexible signal transmission structure is constructed from a first layer including signal connection lines associated with sensor cells near field electromagnetic sensor and a second electrically conductive layer electrically coupled to the electrically conductive material of the sensor. | 05-24-2012 |
20120139557 | RFID READABLE DEVICE WITH SMART SURFACE ACCESS - A monitoring system includes an array of concatenated sensing nodes, with each sensing node being configured to have at least one of near-field and far-field RF coupling circuitry to interface with an adjacent sensing node. A respective device is coupled to each of the sensing nodes. A reader device is configured to have at least one of near-field and far-field RF coupling circuitry to interface with the array of concatenated sensing nodes to read data from the devices. | 06-07-2012 |
20120146667 | RADIO FREQUENCY DETECTOR COILS - A resonant radiofrequency (RF) detector assembly comprising a substrate, a coil formed on a front surface of the substrate, and two capacitors, each capacitor having a front plate which is formed on the front surface of the substrate and a rear plate formed on a rear surface of the substrate, the two front plates each being electrically connected to a different end of the coil, and the two rear plates being electrically connected to each other. | 06-14-2012 |
20120153968 | Isolating and RFID-Based Sensor from Environmental Interference - An RFID-based sensor is provided with an RFID chip and an antenna electrically connected to the RFID chip. The antenna is adapted to receive energy from an RF field and produce a signal. The sensor also includes a sensing material electrically connected to the antenna and having an electrical property which varies in the presence of an environmental factor. The sensor is further provided with a dielectric spacer material and a ground element which is adapted to at least partially isolate the sensing material from the environmental factor. | 06-21-2012 |
20120169353 | SEED TUBE EGRESS-MOUNTED SEED SENSOR - A seed sensor for an agricultural planter adapted to be disposed proximate an egress end of a seed tube through which seeds pass during planting operations. The seed sensor capable of generating an output signal corresponding to the passage of seed therethrough. | 07-05-2012 |
20120235689 | Non-Contact Motion Detection Apparatus - A non-contact motion detection apparatus includes at least one reception antenna, at least one transmission antenna, a voltage-controlled oscillator (VCO) and a phase lock loop (PLL). The at least one reception antenna receives a first wireless radio frequency (RF) signal. The at least one transmission antenna transmits a second wireless RF signal to an object which reflects the second wireless RF signal into the first wireless RF signal. The VCO outputs an oscillation signal to the at least one transmission antenna. The first wireless RF signal received by the at least one reception antenna is injected to the VCO. The PLL generates a control voltage to the VCO according to the oscillation signal from the VCO and a reference frequency. Controlled by the control voltage, which represents a motion information of the object, the oscillation signal of the VCO is locked to the reference frequency. | 09-20-2012 |
20120242350 | SYSTEM AND METHOD FOR SOFT-FIELD TOMOGRAPHY DATA ACQUISITION - A system and method for soft-field tomography data acquisition are provided. One system includes a plurality of transducers that correspond to a plurality of channels, and an excitation driver coupled to generate excitation signals for the plurality of transducers. The system also includes a single reference excitation source from which excitations are generated and one or more derived excitation sources. The one or more derived excitation sources derive excitations from the single reference excitation source that are applied to each of the plurality of channels. The system further includes a response detector and a reduced bit digitizer in each of the plurality of channels configured to digitize a measured response difference between the measured response at one or more of the transducers and at least one of an excitation of the single reference excitation source or an excitation derived from the single reference excitation source or a separate reference. | 09-27-2012 |
20120262188 | RADIO-FREQUENCY TEST PROBES WITH INTEGRATED MATCHING CIRCUITRY - Wireless electronic devices include wireless communications circuitry such as transceiver circuitry coupled to an antenna resonating element. The transceiver circuitry and the antenna element may be formed on first and second substrates, respectively. In compact wireless devices, transceiver and antenna matching circuits may be formed on the first substrate. During production testing, a radio-frequency test probe with integrated matching circuitry may be used to mate with a corresponding contact point on the first substrate. The integrated matching circuitry may include resistors, capacitors, and inductors soldered in desired series-parallel configurations within the test probe. When the test probe is mated to the contact point on the first substrate, a test unit connected to the test probe may be used to perform radio-frequency measurements to determine whether the transceiver circuitry satisfies design criteria. | 10-18-2012 |
20120274339 | ELECTROMAGNETIC SENSOR SYSTEM AND ANTENNA LOOP LAYOUT METHOD THEREOF - An antenna loop layout method for an electromagnetic sensor board is provided. The electromagnetic sensor board has a plurality of inductive antennas which are arranged abreast of each other. One end of the inductive antennas is coupled to each other, and the other end of the inductive antennas have a switch. The method comprises the following steps: first, a pre-determined interval value is provided. Then, the switches are closed in sequence by the pre-determined interval value to form a plurality of physical antenna loops. The pre-determined interval value can be changed dynamically. | 11-01-2012 |
20120286802 | Sensor Electronics for a Plurality of Sensor Elements and Method for Determining a Position of an Object at The Sensor Elements - An electronic circuit with a plurality of connections for a plurality of sensor elements is provided, wherein the electronic circuit is configured to detect, with at least one multiplexing method, the presence of an object in at least one observation area of the sensor elements and to distinguish between the sensor elements. Also a method for determining the position of at least one object situated in at least one observation area of sensor elements relative to the sensor elements is provided, whereby with a multiplexing method an electric variable for each sensor element is detected, which is indicative for the presence of the object in the respective observation area. | 11-15-2012 |
20120299604 | Electric field sensor and implements comprising same - A system has a battery serving as a DC voltage source for electrical equipment of the system, a sensor for sensing an electric field (e-field) generated by the DC voltage source, sensor signal processing circuitry connected to the sensor for receiving a sensor output signal therefrom, and an e-field indicating device coupled to the sensor signal processing circuitry for receiving a processed DC e-field signal therefrom. The sensor outputs the sensor output signal, which is dependent upon a distance between the sensor and the DC voltage source. The sensor signal processing circuitry derives a processed direct current (DC) e-field signal from the sensor output signal. The e-field indicating device outputs the e-field indicating signal in response to the processed DC e-field signal indicating that the e-field exceeds an e-field threshold level. | 11-29-2012 |
20130033271 | Wireless Open-Circuit In-Plane Strain and Displacement Sensor Requiring No Electrical Connections - A wireless in-plane strain and displacement sensor includes an electrical conductor fixedly coupled to a substrate subject to strain conditions. The electrical conductor is shaped between its ends for storage of an electric field and a magnetic field, and remains electrically unconnected to define an unconnected open-circuit having inductance and capacitance. In the presence of a time-varying magnetic field, the electrical conductor so-shaped resonates to generate harmonic electric and magnetic field responses. The sensor also includes at least one electrically unconnected electrode having an end and a free portion extending from the end thereof. The end of each electrode is fixedly coupled to the substrate and the free portion thereof remains unencumbered and spaced apart from a portion of the electrical conductor so-shaped. More specifically, at least some of the free portion is disposed at a location lying within the magnetic field response generated by the electrical conductor. A motion guidance structure is slidingly engaged with each electrode's free portion in order to maintain each free portion parallel to the electrical conductor so-shaped. | 02-07-2013 |
20130043885 | ANTENNA SYSTEM FOR ELECTROMAGNETIC COMPATIBILITY TESTING - An antenna system for electromagnetic compliance testing within a frequency range includes a driven element mounted on a boom and including opposed first and second length-adjustable conductors. A length-adjustable passive element is mounted on the boom and spaced apart from the driven element and including opposed third and fourth length-adjustable conductors. An RF input connector is coupled between a feed path to a feed end of each length-adjustable conductors in the driven element. The feed path is configured to minimize stray reactances and stub effects within the frequency range. | 02-21-2013 |
20130057299 | Sensor Device and Method for Grip and Proximity Detection - A sensor device is provided, with a first electrode structure and a second electrode structure, wherein the first electrode structure has a transmitting electrode, a compensation electrode and a reception electrode and wherein the second electrode structure has a number of field sensing electrodes. The first and the second electrode structure are coupled with an evaluating device. The evaluating device has a signal generator for supplying the transmitting electrode and the compensation electrode with an alternating electrical signal. The reception electrode, the transmitting electrode, the compensation electrode and the field sensing electrodes are arranged in relation to each other in such a way that a first alternating electrical field emitted at the transmitting electrode may be coupled into the reception electrode and into one of the field sensing electrodes and a second alternating electrical field emitted at the compensation electrode may be coupled substantially only into the reception electrode. | 03-07-2013 |
20130057300 | SHIELDED DOUBLE-COIL MULTILAYER ASSEMBLY FOR INDUCTIVE DETECTOR - The invention relates to a shielded double-coil multilayer assembly intended to be used in an inductive detector. This multilayer assembly comprises a plurality of stacked parallel separated layers, namely:
| 03-07-2013 |
20130106440 | RF Power Measurement With Bi-Directional Bridge | 05-02-2013 |
20130127477 | STIMULUS RESPONSIVE NANOPARTICLES - Disclosed are various embodiments of methods and systems related to stimulus responsive nanoparticles. In one embodiment includes a stimulus responsive nanoparticle system, the system includes a first electrode, a second electrode, and a plurality of elongated electro-responsive nanoparticles dispersed between the first and second electrodes, the plurality of electro-responsive nanorods configured to respond to an electric field established between the first and second electrodes. | 05-23-2013 |
20130181724 | METHOD AND SYSTEM OF WIRELESS POWER TRANSFER FOREIGN OBJECT DETECTION - A wireless power transfer foreign object detector having, at least one secondary receiver coil, an adjustable load electrically coupled to the at least one secondary receiver coil, and at least one temperature sensor providing at least one temperature detection signal, wherein the at least one temperature sensor responsive to at least one thermal state of the at least one secondary receiver coil, and wherein foreign object detection is based at least in part upon the at least one temperature detection signal. | 07-18-2013 |
20130249568 | CABINET TOUCH CONTROL - Provided is a method and an apparatus for controlling an electric device. The apparatus includes a cabinet defining a recess, and a sensor disposed within said recess for sensing the presence of a foreign object in close proximity to the sensor. A veneer at least partially conceals the sensor disposed within said recess from view when observed from an ambient environment of the cabinet. A controller is responsive to a signal transmitted by the sensor indicative of the presence of the foreign object adjacent to the sensor to transmit a control signal for controlling operation of the electric device operatively connected to communicate with the controller. | 09-26-2013 |
20130285675 | TUNABLE PROXIMITY SENSOR - A tunable proximity sensor and a method of manufacturing the same are disclosed. The proximity sensor includes a cap with different sections having different dielectric constants, shapes, and/or thicknesses. As the cap is rotated with respect the sensing element, these non-uniform sections induce a different loading on the sensor element from the electromagnetic field, allowing the proximity sensor to be tuned. | 10-31-2013 |
20130314104 | DETERMINATION OF POSITIONS - A method for position determination, having a first step, in which a first sequence of positions is determined from radio signals of stationary transmitters, and a second sequence of positions being determined from other sensor data by dead reckoning. The first sequence of positions and the second sequence of positions are compared with one another in a second step. A computer program product for carrying out the method is also provided. A position determining device, in particular in a mobile terminal is also provided, having a receiver for radio signals of stationary transmitters, having position determining means for determining a first position of the receiver from radio signals of stationary transmitters, sensors at least for determining a direction and a distance in order to determine a second position by dead reckoning, and a memory for storing a sequence of first positions and a sequence of second positions. The first position determining device has a processing unit for comparing the sequence of first positions and the sequence of second positions. | 11-28-2013 |
20130320997 | SENSOR SYSTEM AND ANTENNA FOR USE IN A SENSOR SYSTEM - A sensor head configured for use in a radio frequency operated sensing device, the sensor head comprising a non-planar antenna. The sensor head may further include means for connecting the sensor head to a data conduit. The non-planar antenna may be configured to have a predetermined resonance frequency within the radio frequency spectrum. | 12-05-2013 |
20130320998 | IN-SITU VHF CURRENT SENSOR FOR A PLASMA REACTOR - An RF current probe is encapsulated in a conductive housing to permit its placement inside a plasma reactor chamber. An RF voltage probe is adapted to have a long coaxial cable to permit a measuring device to be connected remotely from the probe without distorting the voltage measurement. | 12-05-2013 |
20140015545 | METHOD FOR INSPECTING HOLLOW FIBER FILTRATION MODULES - Analyze a hollow fiber filter module for defects by providing a membrane header assembly with a header having a conduit defined there-through by a wall with multiple holes and a hollow fiber membrane inserted into a hole, directing a probe device with a sensor through the conduit, receiving sensory response information with the sensor, the sensory response information containing information sufficient to identify defect in the form of a hole lacking a hollow fiber membrane, a hole that has a hollow fiber membrane inserted to a non-desired depth, or both and then interpreting the sensory response information to detect such defects if they exist. | 01-16-2014 |
20140028329 | SYSTEM AND A METHOD FOR NON-INVASIVE DATA ACQUISITION - The invention relates to a system for non-invasive data acquisition from a human or animal body | 01-30-2014 |
20140055148 | Identifying Transmission/Reception Coils of a Magnetic Resonance Imaging Scanner with the Aid of Electronically Readable Labels - A device for identifying a local coil property of a local coil for a magnetic resonance imaging scanner includes at least one label configured to transmit at least one identity number wirelessly. The device also includes at least one reading unit with a reading-unit antenna. The reading unit is configured to receive the at least one identity number. The device includes an identification apparatus configured to identify a local coil property of the local coil based on the at least one received identity number. | 02-27-2014 |
20140091813 | SYSTEMS AND METHODS RELATED TO NEAR-FIELD ELECTROMAGNETIC SCANNERS - Disclosed are systems, devices and methods related to scanners that can be utilized for multiple electrical and/or magnetic field measurements at different locations of a radio-frequency (RF) module. In some embodiments, a scanning system can include a miniature probe such as a magnetic probe, a fixture system configured to hold a device under test (DUT) such as an RF module, an operating system configured to operate the DUT, and a measurement system configured to obtain field strength measurements through the miniature probe at different locations of the DUT. Such measurements can yield a near-field distribution over a plurality of selected areas of the DUT, with each of the selected areas being smaller than an overall lateral area of the DUT. In some implementations, such a scanning system can be utilized to facilitate applications such as electromagnetic (EM) shielding designs. | 04-03-2014 |
20140125355 | PASSENGER OCCUPANCY IDENTIFICATION SYSTEM - A seat for a passenger vehicle is provided that comprises a first sensor for detecting the presence or absence of an occupant in the seat and a second sensor for validating the seat occupancy. The seat further comprises a transmitter for transmitting a signal indicative of valid occupancy of the seat. The first sensor may be a non-contact, capacitive sensor and the second sensor may comprise a near-field communication device for receiving a seat validation code. A seat validation system may be established on a passenger vehicle such as a train, wherein a central controller may report on seat occupancy status for the vehicle. | 05-08-2014 |
20140139238 | SOLUTION TESTING EQUIPMENT - There is provided solution testing equipment which can detect an output variation of a THz oscillation device using a THz wave (hν) by contacting a liquid or cells on an RTD oscillation device, and can reduce the size and weight thereof. The solution testing equipment includes: a THz oscillation device configured to radiate the THz wave I | 05-22-2014 |
20140210487 | ANTENNA DEVICE - An antenna device includes a sensor electrode having a capacitance configured to change upon an object approaching or contacting the sensor electrode, a sensor circuit electrically connected to the sensor electrode, an antenna section, and a substrate having the sensor circuit mounted thereon and having the sensor electrode fixed thereto. The sensor circuit is configured to detect the capacitance. The substrate is inserted into the antenna section. This antenna device allows components to be easily positioned during assembly. | 07-31-2014 |
20140266248 | NON-CONTACT CONDUCTIVITY MEASUREMENT - A system for measuring the conductivity of a material-under-test includes a support structure, an upper magnet mounted to the support structure and a free-floating magnet below the fixed magnet. The system includes a diamagnet positioned between the fixed magnet and the free-floating magnet such that the free-floating magnet floats in the air beneath the diamagnet and a rotation detection assembly configured to detect a rotation rate of the free-floating magnet, where the rotation rate is based on a drag torque effect of a material-under-test on the free-floating magnet. The system also includes a conductivity calculation unit configured to calculate at least one of a conductivity or a resistivity of the material-under-test based on the detected rotation rate of the free-floating magnet. | 09-18-2014 |
20140368218 | COMPOSITION SIMULATING THE DIELECTRIC PROPERTIES OF THE HUMAN BODY AND USE THEREOF FOR SAR MEASUREMENT - An oil-in-water emulsion includes an aqueous phase and an oily phase, the aqueous phase including water and a relaxing agent, and the oily phase including an oil and at least one surfactant. The emulsion has dielectric properties simulating dielectric properties of the human body. A device including the emulsion, a simulated human body part filled with the emulsion; and at least one system capable of measuring a local specific absorption rate when the simulated human body part is exposed to an electromagnetic field are also described. A method for conducting specific absorption rate tests of an apparatus radiating an electromagnetic field including using the emulsion, and a process for manufacturing the emulsion are also described. | 12-18-2014 |
20150035545 | APPARATUS AND METHOD FOR DETERMINING INFORMATION ON A POWER VARIATION OF A TRANSMIT SIGNAL - An apparatus for determining information on a power variation of a transmit signal comprises a power amplifier module, an antenna module and a power variation determining module. The power amplifier module amplifies a radio frequency transmit signal and the antenna module transmits at least partly the amplified radio frequency transmit signal. The power variation determining module determines a weighted sum of a first feedback signal derived from the amplified radio frequency transmit signal and a second feedback signal derived from the amplified radio frequency transmit signal. The first feedback signal and the second feedback signal comprise different dependencies on a varying impedance at the antenna module. Further, the power variation determining module generates a power variation signal based on the weighted sum. The power variation signal comprises information related to a power variation of the amplified radio frequency transmit signal. | 02-05-2015 |
20150042358 | Dielectric Constant Measurement Circuit and Dielectric Constant Measurement Method - A dielectric constant measurement circuit includes a dielectric constant sensor, an oscillator controlling circuit, a waveform converting circuit, and a counting readout circuit. The oscillator controlling circuit generates an oscillation waveform according to the response of the dielectric constant sensor to a dielectric material. The waveform converting circuit converts the oscillation waveform into frequency division square waves. The counting readout circuit includes a switching counter, a switching circuit, a reference current source, and a current integrator. The reference current source charges the current integrator through the switching circuit controlled by the frequency division square waves, and the switching counter counts the number of the turned-on states of the switching circuit and stops counting the number of the turned-on states when a value of the output voltage from the current integrator reaches a value of the reference voltage, and the number of the turned-on states is related to the oscillation frequency. | 02-12-2015 |
20150042359 | Apparatus for Sensor with Configurable Coil Constant and Associated Methods - An apparatus includes a coil suspended in a magnetic field, and an optical detector to detect displacement of the coil in response to a stimulus. The apparatus further includes a feedback circuit coupled to the optical detector and to the coil. A coil constant of the apparatus may be configured to a desired value. | 02-12-2015 |
20150130479 | INFORMATION PROCESSING SYSTEM, INFORMATION PROCESSING APPARATUS, AND CABLE - An information processing system includes a cable and a first information processing apparatus. The cable connects information processing apparatuses to each other. The cable includes one or more first core wires through which information is transmitted, and one or more second core wires having a shape or component associated with preset information. The first information processing apparatus measures a first parameter that is related to the second core wires and changes with the shape or component, and to identify the cable using the measured first parameter. | 05-14-2015 |
20150137830 | Method and Apparatus for Detection and Identification of Counterfeit and Substandard Electronics - An apparatus for detecting a condition or authenticity of one or more electronic devices includes an enclosure having an antenna integrated therewithin, a fixture mounted within a hollow interior of the enclosure, the fixture being configured to receive the one or more electronic devices and connect one or more signals to each of the one or more electronic devices and a sensor and controller assembly connected to the antenna and configured to process a signature of an emission of a radiofrequency (RF) energy from of one or more electronic devices having the one or more signals connected thereto. | 05-21-2015 |
20150145528 | PASSIVE INTERMODULATION MEASUREMENT DEVICE AND RELAY UNIT INCLUDING THE SAME - A passive intermodulation (PIM) measurement device for measuring a PIM in at least one of installation equipments and a distribution network within a distributed antenna system (DAS), the PIM measurement device included in a relay unit of the DAS, the PIM measurement device includes a pulse generation unit, a PIM detection unit and a controller. The pulse generation unit generates a two-tone pulse signal having frequencies different from each other. The PIM detection unit detects intermodulation (IM) signals fed back from the installation equipments or the distribution network in the DAS, corresponding to the propagation of the two-tone pulse signal. The controller detects PIM generation information in the DAS, based on the fed-back IM signal. | 05-28-2015 |
20150300936 | FLUID SENSOR - A fluid sensor ( | 10-22-2015 |
20160041213 | RADIO FIELD INTENSITY MEASUREMENT DEVICE, AND RADIO FIELD INTENSITY DETECTOR AND GAME CONSOLE USING THE SAME - The present invention provides a radio field intensity measurement device having a display portion with improved visibility, in the case of measuring a weak radiowave from a long distance. In the radio field intensity measurement device, a battery is provided as a power source for power supply and the battery is charged by a received radiowave. When a potential of a signal obtained from the received radiowave is higher than an output potential of the battery, the power is stored in the battery. On the other hand, when the potential of the signal obtained from the received radiowave is lower than the output potential of the battery, power produced by the battery is used as power to drive the radio field intensity measurement device. As an element to display the radio field intensity, a thermochromic element or an electrochromic element is used. | 02-11-2016 |
20160054247 | CHARACTERIZATION OF MATERIAL UNDER TEST (MUT) WITH ELECTROMAGNETIC IMPEDANCE SPECTROSCOPY - Methods of extracting complex impedance from selected subsurface volumes of a material under test (MUT) using various embodiments of electrode sensor pairs are provided. The electrode pairs can penetrate into a subsurface of the MUT, and operate below the surface of the MUT. Configurations of electrode pair sensors provide measured data of complex impedance of selected subsurface volumes of the MUT using electromagnetic spectrographic signals over a frequency range. The complex impedance characteristics of the subsurface volumes may be used to identify variations in the properties of the MUT, or be correlated to physical properties of the MUT. | 02-25-2016 |
20160091545 | RADIO WAVE MEASUREMENT DEVICE - [Problem to be Solved] | 03-31-2016 |
20160123927 | Split-Ring Resonator Plasma Source - A miniaturized plasma source includes a stripline split-ring resonator. The split-ring resonator is sandwiched between two dielectric substrates and two metal ground planes. In order to make the plasma accessible from the outside of the ground planes, a hole is made through the gap between the ends of the split ring. The two ground planes act as an electromagnetic shield, protecting the split-ring resonator from electromagnetic interference due to changes in the electric or dielectric environment surrounding it. The miniaturized plasma source is particularly useful in optogalvanic spectroscopy applications. | 05-05-2016 |
20160124041 | ULTRA-SENSITIVE, ULTRA-LOW POWER RF FIELD SENSOR - A sensor includes a hollow enclosure, an antenna disposed external to the hollow enclosure and configured to collect emission of electromagnetic energy, a circuit disposed within the hollow enclosure and comprising a low noise amplifier (LNA) connectable to the antenna, and an analog to digital converter (ADC) in a connection with the LNA, circuit connections connecting, during use of the sensor, the circuit to each of the antenna, a source of electric energy and a signal processing component, a connection between the enclosure and an enclosure of an integrated circuit (IC), whereby the antenna id disposed between the sensor and the IC, and the sensor configured to at least measure a low-level electromagnetic energy emitted from the IC. | 05-05-2016 |
20170234915 | PERSONAL RADIO-FREQUENCY ELECTROMAGNETIC RADIATION EXPOSIMETRY | 08-17-2017 |
20180024176 | INHOMOGENEOUS TRANSMISSION LINE FOR DETERMINING THE PERMITTIVITY OF A DEVICE UNDER TEST IN A POSITION-RESOLVED MANNER | 01-25-2018 |