Entries |
Document | Title | Date |
20080197858 | AUTOMATIC CALIBRATION TECHNIQUES WITH IMPROVED ACCURACY AND LOWER COMPLEXITY FOR HIGH FREQUENCY VECTOR NETWORK ANALYZERS - A calibration module, for use in calibrating a VNA, includes ports connectable to the VNA, calibration standards, and single pole multi throw (SPMT) switches. Each SPMT includes a single pole terminal, multiple throw terminals and a shunt terminal corresponding to each multiple throw terminal. A switching path is between each throw terminal and the single pole terminal, and between each shunt terminal and the single pole terminal. Each switching path includes at least one solid state switching element. The calibration standards are selectively connectable to the ports of the calibration module by selectively controlling the switching elements. Each port of the calibration module is directly connected to a throw terminal of one of the SPMT switches. Also, unique algorithm are provided for calibrating a VNA when using a calibration impedance that is a hybrid of a reflect standard and a transmission standard, which can be achieved using the calibration module. | 08-21-2008 |
20080204039 | Self Calibration Apparatus And Methods - The present invention is a method to allow a vector network analyzer (VNA) to self calibrate without the addition of calibration standards, e.g. a calibration kit with a network analyzer. | 08-28-2008 |
20080211514 | METHOD AND APPARATUS FOR DETERMINING THE MOISTURE OF A RUNNING MATERIAL WEB - In a method for determining the moisture of a running material web, in particular a paper web or paperboard web, the material web is scanned by way of a sensor including a microwave resonator, the resonance response of the microwave resonator is investigated, and the moisture in the material web is established in the light of this resonance response while taking account of the distance between the microwave resonator and the material web. Also disclosed is a corresponding apparatus for determining the moisture. | 09-04-2008 |
20080211515 | Method and Apparatus for Measuring Scattering Coefficient of Device Under Test - A measuring method and measuring apparatus for vector-measuring a scattering coefficient of a device under test substantially using a scalar measuring instrument while enabling a reduction in the size of the measuring instrument and the cost. The measurement system includes a signal source that applies a signal to a device under test, a scalar measuring instrument that measures a reflected wave reflected from the device under test or a transmitted wave transmitted through the device under test as a scalar value, and a superimposing signal system that superimposes three different vector signals whose relation values are specified in advance on the reflected wave or the transmitted wave of the device under test. The three vector signals are superimposed on the reflected wave or the transmitted wave of the device under test, and the superimposed signals are each measured as a scalar value by the electric-power measuring instrument. The three measured scalar values are converted into a single vector value using the specified relation values of the three vector signals, thereby obtaining a transmission coefficient of the device under test. | 09-04-2008 |
20080238441 | Vector Network Analyzer-Noise Figure Measurement - A noise receiver is included in a network analyzer block diagram such that noise power and S-parameters measurements can be made almost simultaneously without mechanical switching in the test set. Additionally, a variable mismatch device tuner that is used by the network analyzer for S-parameter calibrations, is further used during the noise figure measurements method to remove the effect of source match variations so that the expected noise figure performance of the DUT when connected to a desired input (probably 50 ohms) can be determined. | 10-02-2008 |
20080252301 | Calibration Device and Calibration Method for Adjusting a Directional-Coupler Measuring System - A calibration device for adjusting the forward power and reflected power measured via a single measuring directional coupler which is connected to a high-frequency transmitter, the forward power that is attenuated with a | 10-16-2008 |
20080258738 | CHARACTERIZING TEST FIXTURES - Provided herein are techniques for characterizing a test fixture that is used for connecting a device under test (DUT) to a vector network analyzer (VNA), e.g., to thereby enable de-embedding of the test fixture from measurements of the DUT connected to the test fixture. In an embodiment, the test fixture is separated into 4-port test fixture segments, based on which ports of the DUT have internal coupling. Each test fixture segment has an outer 2-port reference plane and an inner 2-port reference plane. A 4-port calibration is performed at outer planes of the two test fixture segments, while corresponding ports of the inner planes of the test fixture segments are connected together with thru segments, to thereby determine a thru set of S-parameters. A set of S-parameters is determined for each of the 4-port test fixture segments, based on the thru set of S-parameters. | 10-23-2008 |
20080265909 | Autosensitive Detector and Measurement System - This disclosure relates to an autosensitive detector and an autosensitive measurement system with a self-adjustable set-off value, and more specifically, to a probe for adaptation to an environmental parameter such as liquids adapted to reset its measured sensitivity each time the probe is enabled or turned on, which can be further desensitized by adjusting a sensitivity correction factor by a factor (F) within the range of 0.0510-30-2008 | |
20080278176 | CALIBRATED S-PARAMETER MEASUREMENTS OF A HIGH IMPEDANCE PROBE - A new methodology for the measurement of the S-parameters of a high impedance probe allows obtaining a full two port S-parameter set for the high impedance probe. The measured probe S-parameters are then used for characterization of probes. An alternative method characterizes half of the fixture and termination as a one-port network and expanding it into a two-port error box. The two-port error box is then cascaded with the probe input. | 11-13-2008 |
20080278177 | Method for Direct Measurement of the Mixed-Mode Scattering Matrix With a Vectorial Network Analyser - In a method for the excitation of port groups of a multi-port device under test with coherent incident waves of the same frequency, which provide defined amplitude ratios and phase differences within each port group, the waves are generated respectively by one signal generator of a vectorial network analyzer per test port. The network analyzer has unbalanced test ports. A system-error correction of the unbalanced incident and reflected waves with reference to the ports of the device under test is implemented in order to obtain corrected waves. The amplitude and phase changes required in the signal generators to fulfil the desired amplitude and phase conditions are calculated from these corrected waves. | 11-13-2008 |
20090027063 | Method for Calibrating an Electrostatic Discharge Tester - The present disclosure relates to a method for calibrating transient behaviour of an electrostatic discharge (ESD) test system. The system includes an ESD pulse generator and probe needles for applying a predetermined pulse on a device under test. The probe needles are connected to the ESD pulse generator via conductors. The test system includes measurement equipment for detecting transient behaviour of the device under test by simultaneously capturing voltage and current waveforms the device as a result of the pulse. The method comprises the steps of: (a) applying the ESD test system on a first known system with a first known impedance, (b) applying the ESD test system on a second known system with a known second impedance, and (c) determining calibration data for the transient behaviour the ESD test system on the basis of captured voltage and current waveforms, taking into account said known first and second impedances. In preferred embodiments the waveforms are transferred to the frequency domain for correlation. | 01-29-2009 |
20090027064 | METHOD AND SYSTEM FOR ERROR CHECKING AN ELECTROCHEMICAL SENSOR - A method and a corresponding system for error checking an electrochemical sensor having at least two electrodes and a liquid measuring medium applied thereto are disclosed. The method comprises determining a first admittance between a first set of electrodes of the sensor; determining a second admittance between a second set of electrodes of the sensor; determining a value using the first admittance and the second admittance; and displaying an error message if the value is out of a predetermined tolerance. | 01-29-2009 |
20090066342 | METHOD AND APPARATUS FOR A VOLTAGE/CURRENT PROBE TEST ARRANGEMENTS - A diagnostic tool for performing electrical measurements to calibrate a plasma processing chamber probe is provided. The diagnostic tool includes an RF generator. The diagnostic tool also includes a first impedance circuit. The first impedance circuit is a voltage-load network, configured to deliver RF voltage outputs from the RF generator for voltage measurements when RF power from the RF generator is delivered to the first impedance circuit. The diagnostic tool further includes a second impedance circuit. The second impedance circuit is a current-load network, configured to deliver RF current outputs from the RF generator for current measurements when the RF power from the RF generator is delivered to the second impedance circuit. The diagnostic tool further includes a coaxial switch network arrangement configured to provide switchable RF delivery paths to deliver the RF power from the RF generator to one of the first impedance circuit and the second impedance circuit. | 03-12-2009 |
20090091334 | Calibration Circuit for Resistance Component - A calibration circuit including a plurality of first resistance components, a plurality of second resistance components, and a first feedback system is provided. The first feedback system selects M | 04-09-2009 |
20090134882 | DISPOSABLE, PRE-CALIBRATED, PRE-VALIDATED SENSORS FOR USE IN BIO-PROCESSING APPLICATIONS - Disposable, pre-sterilized, and pre-calibrated, pre-validated conductivity sensors are provided. These sensors are designed to store sensor-specific information, such as calibration and production information, in a non-volatile memory chip on the sensor. The sensors are calibrated using 0.100 molar potassium chloride (KCl) solutions at 25 degrees Celsius. These sensors may be utilize with in-line systems, closed fluid circuits, bioprocessing systems, or systems which require an aseptic environment while avoiding or reducing cleaning procedures and quality assurance variances. | 05-28-2009 |
20090160458 | Network analyzer calibrator having electrical and electrooptical components - A calibration kit ( | 06-25-2009 |
20090167320 | Test method for a variable capacitance measuring system - A method for testing a variable capacitance measurement system including a fixed voltage source, a variable capacitance sensor, and a circuit to process information output by this sensor. The method connects an electrically controllable electronic simulation device to replace the variable capacitance sensor, models the electrophysical behaviour of the sensor, and tests the system. | 07-02-2009 |
20090174415 | Method for Calibrating a Real-Time Load-Pull System - A calibration procedure for a real-time load-pull system whereby the signal passes through at least one of the tuners of said real-time load-pull system. A calibration standard is connected to the test ports and an electromagnetic wave signal passes through one of the tuners before passing through the wave sensing structure. After having passed the wave sensing structure the electromagnetic wave signal interacts with the calibration element. This results in a reflected and eventually a transmitted electromagnetic wave signal that pass through the wave sensing structures of the system. The sensed electromagnetic wave signals are measured by means of a receiver. The procedure is repeated with different calibration standards. Then a line element is connected to the test ports and, one after the other, a set of calibration standards, a power meter and a harmonic phase reference generator are connected to the output tuner, each time sending a signal and measuring the wave signals. The measured data is used to calculate the error coefficients of the real-time load-pull system. | 07-09-2009 |
20090184721 | METHOD AND SYSTEM FOR TRACKING SCATTERING PARAMETER TEST SYSTEM CALIBRATION - Embodiments describe methods of correcting S-parameter measurements for a DUT. The method includes coupling at least one tracking module associated with a set of electrical standards to a S-parameter measurement device to form a test system. An initial calibration for the test system is then determined. This may include measuring the S-parameters of the electrical standards, generating a calibration along a calibration plane, generating a calibration along a correction plane and determining at least one error adapter from the calibrations. The DUT is coupled to the test system and the S-parameters of the DUT are measured. Changes in the initial calibration are tracked using the tracking modules. Tracking may include measuring the S-parameters of the electrical standards, generating a correction plane calibration and generating a corrected calibration plane calibration from the correction plane calibration and the error adapter(s). The measured S-parameters are corrected using the tracked changes. | 07-23-2009 |
20090195258 | CONTROLLING AN ANALOG SIGNAL IN AN INTEGRATED CIRCUIT - A method of controlling an analog signal in an integrated circuit includes generating a first control signal having a first predetermined duration within the integrated circuit. The first control signal is configured to cause the analog signal to have a first signal level. The first signal level is compared to a level of a target signal. A second control signal is generated within the integrated circuit based on a result of the comparison. The second control signal is configured to cause the analog signal to have a second signal level. The second control signal has a second predetermined duration that is different than the first predetermined duration. | 08-06-2009 |
20090212788 | Conductivity Counter - A conductivity counter and method of determining conductivity of a fluid sample are disclosed. The counter is suitable for high-speed, accurate counting of discrete events or items, such as cancer cells, passing through a fluid sample cell. A variable frequency current source is used to supply an excitation current to a sample cell connected in parallel with an inductance or the electrical equivalence of an inductance. This configuration can be accurately modeled as a parallel RLC circuit when the system is operated at a stable frequency. The current source frequency is tuned to the resonance frequency of the equivalent RLC circuit, which effectively eliminates the capacitive and inductive components of the impedance, leaving only purely resistive components. The output of the equivalent RLC circuit is connected to a high input impedance buffer amplifier and then to a phase sensitive detector, which detects the phase shift resulting from the equivalent RLC circuit. The output is filtered and a differencing amplifier is used to zero out the output signal due to the system components and the sample cell buffer solution prior to taking active readings. The remaining output signal is due to perturbations in the fluid sample, such as passing cancer cells. This output is sent to a high-gain output amplifier and then supplied to a suitable signal processing device or system, such as a computer. | 08-27-2009 |
20090224772 | SYSTEM AND METHOD FOR DE-EMBEDDING A DEVICE UNDER TEST EMPLOYING A PARAMETRIZED NETLIST - S-parameter data is measured on an embedded device test structure, an open dummy, and a short dummy. A 4-port network of the pad set parasitics of the embedded device test structure is modeled by a parameterized netlist containing a lumped element network having at least one parameterized lumped element. The S-parameter data across a range of measurement frequencies is fitted with the parametrized netlist employing the at least one parameterized lumped element as at least one fitting parameter for the S-parameter data. Thus, the fitting method is a multi-frequency fitting for the at least one parameterized lumped element. A 4-port Y-parameter (admittance parameter) is obtained from the fitted parameterized netlist. The Y-parameter of the device under test is obtained from the measured admittance of the embedded device test structure and the calculated 4-port Y parameter. | 09-10-2009 |
20090237090 | METHOD AND SYSTEM FOR ADJUSTING CHARACTERISTICS OF INTEGRATED RELATIVE HUMIDITY SENSOR - A method and system for adjusting characteristics of a relative humidity sensor in order to achieve a desired value of accuracy is presented. A relative humidity sensor, charge balance circuit include a series of sensing capacitors Cx | 09-24-2009 |
20090237091 | ELECTRICAL TESTER SETUP AND CALIBRATION DEVICE - An electronic testing machine includes a plurality of test modules. Each test module has a plurality of contact pairs for testing electronic components. An apparatus and process for electrical test setup and calibration of the electronic testing machine includes a plate having at least one contact per track movable between test positions to electrically insert a test device selectively between any one contact pair, and a control program. The test device can be selected from a group consisting of a volt meter, a current meter, a precision voltage/current source, a calibration resistor, and a calibration capacitor. The control program can perform at least one test function through the plate. The test function can be selected from a group consisting of alignment verification, voltage/current source verification, insulation resistance (IR) leakage measurement verification, part-present contact check verification, capacitance and dissipation (CD) measurement verification, IR/CD compensation, and IR/CD calibration. | 09-24-2009 |
20090243628 | SYSTEMS AND METHODS FOR ONLINE PHASE CALIBRATION - A system for online relative phase calibration is provided. The system includes at least one excitation source configured to generate multiple excitation signals. The system also includes at least two sensors coupled to respective ones of the at least one excitation source via a transmission line, wherein the two sensors are configured to receive respective ones of the excitation signals. The system further includes at least two phase detectors configured to receive at least two reflected signals from the two sensors via the transmission line, wherein each of the two phase detectors are configured to output a respective voltage representing a phase difference between respective ones of the reflected signals and respective ones of the excitation signals. The system also includes a switch coupled to the sensors and the phase detectors, the switch configured to switch the phase detectors between the sensors at a pre-determined switching interval. The system further includes a calibration module coupled to the phase detectors, wherein the calibration module is configured to receive and process the respective voltage from the at least two phase detectors to generate respective calibrated voltage signals, wherein the calibration module is further configured to and match the calibrated voltage signals of each of the phase detectors. | 10-01-2009 |
20090256578 | ANTI-PINCH SENSOR - An anti-pinch sensor, particularly for detecting an obstacle in the path of an actuating element of a motor vehicle is provided, having a sensor body, a measuring electrode, which is disposed in the sensor body and to which a measuring potential can be applied, a calibrating electrode, which is electrically disconnected and disposed in the sensor body adjacent to the measuring electrode, and a control unit. The control unit controls the measuring electrode and the calibrating electrode such that the measuring potential and the calibrating potential are equal in a measuring phase, and differ from each other in a calibrating phase. | 10-15-2009 |
20090302865 | METHOD AND DEVICE FOR MEASURING THE THICKNESS OF A LAYER OF MATERIAL - Described herein is a method for measuring, via a microwave sensor, the thickness of a layer of first material, said method envisaging: acquiring at least one frequency response of the layer of first material via a microwave sensor; setting the microwave sensor on a plurality of specimens of second materials for different temperature values in such a way as to obtain reference data; calibrating the microwave sensor as a function of the electrical conductivity of the first material using the reference data; measuring the temperature of the layer of first material via a temperature sensor; determining measurement parameters from the frequency response; and processing the reference data with the measurement parameters to obtain a measurement of the thickness of the layer of first material. | 12-10-2009 |
20090322347 | RF CALIBRATION DEVICE AND METHOD - A measurement device is presented being configured to be connectable to an analyzer unit (comprising a network analyzer). The measurement device comprises a measuring unit and a calibration and control unit connected to and integral with the measuring unit. The calibration and control unit is configured to enable connection of the measuring unit to the analyzer unit. The calibration and control unit comprises a number of terminals of known RF reflection coefficients respectively and comprises a memory utility carrying recorded data indicative of said RF reflection coefficients and recorded data indicative of RF transfer coefficients of the calibration and control unit. This configuration enables calculation of the RF response of the measuring unit while remaining integral with the calibration and control unit. | 12-31-2009 |
20090322348 | IMPEDANCE MEASURING METHOD - An impedance measuring method uses an impedance measuring device for measuring an impedance of a measured electronic component, a coaxial connector electrically connected to the impedance measuring device, and a measurement substrate which can be housed in the coaxial connector The coaxial connector has a center conductor and an outer conductor located outside the center conductor. The measurement substrate has an insulating substrate and first and second conductors each formed on a first principal surface of the insulating substrate. The measurement substrate with the measured electronic component being mounted on the first and second conductors is housed in the coaxial connector connected to the impedance measuring device, so as to electrically connect the first conductor to the center conductor and electrically connect the second conductor to the outer conductor. Then the impedance of the measured electronic component is measured by the impedance measuring device. | 12-31-2009 |
20100001742 | Calibration technique - The tolerance of Short-Open-Load (SOL) and Short-Open-Load-Reflect (SOLR) VNA calibration for variability in probe position is improved by using load and short calibration structures having impedance elements with a length at least two times the probe contact pitch and a width at least two times the sum of the combined pitches of the probe contacts. | 01-07-2010 |
20100007355 | METHOD FOR TESTING RADIO FREQUENCY (RF) RECEIVER TO PROVIDE POWER CORRECTION DATA - A method for testing a radio frequency (RF) receiver as a device under test (DUT) with one or more test instruments to provide a plurality of relative power correction factors, a plurality of received signal strength indication (RSSI) calibration factors, or both. | 01-14-2010 |
20100060295 | VOLTAGE DETECTION APPARATUS - A voltage detection apparatus includes: a battery including unit cells mutually connected in series; a first block including at least one of the unit cells; a second block including at least one of the unit cells, and provided adjacent to the first block; a first voltage detector connected to the first block, which detects a voltage between both ends of the unit cell in the first block, and which includes: a current source; a current detection element connected to the current source; and a voltage measuring unit which detects a voltage between both ends of the current detection element; and a second voltage detector connected to the second block, which has a similar construction with the first voltage detector. An abnormality detector of the voltage detection apparatus detects an abnormality of the voltage detectors in accordance with the voltages between both ends of the current detection elements. | 03-11-2010 |
20100079152 | Methods for Measuring Dielectric Properties of Parts - A method is disclosed for calibrating a capacitance of an apparatus for measuring dielectric properties of a part. The apparatus includes an electrically grounded chamber, a lower electrode disposed within the chamber and connected to a radiofrequency (RF) transmission rod, an electrically grounded upper electrode disposed within the chamber above the lower electrode, and a variable capacitor connected to control transmission of RF power through the RF transmission rod to the lower electrode. A method is also disclosed for determining a capacitance of a part through use of the apparatus. A method is also disclosed for determining a dielectric constant of a part through use of the apparatus. A method is also disclosed for determining a loss tangent of a part through use of the apparatus. | 04-01-2010 |
20100164511 | DIAGNOSING AN ELECTRONIC SENSOR - The apparatus ( | 07-01-2010 |
20100171513 | WOOD KILN MOISTURE MEASUREMENT CALIBRATION AND METERING METHODS - A moisture metering calibration method and system for, e.g., determining the moisture lumber within a lumber drying kiln is disclosed. Calibration of moisture indicative electrical signals obtained from, e.g., moisture sensing capacitive plates spaced apart within a stack of drying lumber is performed, wherein long lengths (e.g., up to 1000 linear feet or more) of coaxial cable can be used for transmitting the signals, and effectively removing signal anomalies induced in such cabling so that accurate lumber moisture measurements result. Such extended cable lengths provides flexibility with respect to placement of electronic moisture metering equipment. This flexibility allows such equipment to be placed in an environmentally-controlled enclosure, rather than on the weather exposed exterior of a kiln whose lumber is being monitored. | 07-08-2010 |
20100182014 | SYSTEMS AND METHODS FOR DETECTING TERMINAL STATE AND SETTING OUTPUT DRIVER IMPEDANCE - Embodiments of the present invention include systems for calibrating an output circuit. A comparator is coupled to a calibration terminal and configured to determine whether the calibration terminal is in a first state coupled to a calibration resistor or in a second state. A calibration circuit is coupled to the calibration terminal and configured to generate a calibration value based in part on the presence or absence of the calibration resistor. An impedance selector is coupled to the calibration circuit, the comparator, and a default calibration value. The impedance selector is configured to select the default calibration value when the comparator indicates the calibration terminal is in the second state and to select the calibration value coupled from the calibration circuit when the comparator indicates the calibration terminal is in the first state. | 07-22-2010 |
20100182015 | Apparatus and Method for Calibrating the Sensitivity of a Moisture Sensor - The present invention is a method for adjusting the sensitivity of a moisture probe which measures dielectric constant of surrounding media. The method comprises the steps of placing the probe in media and adjusting its depth to alter composite measured dielectric constant of a column of media about a probe blade. | 07-22-2010 |
20100188100 | AUTOMATED SENSOR SPECIFIC CALIBRATION THROUGH SENSOR PARAMETER DOWNLOAD - A sensor system for measuring a clearance parameter between a stationary component and a rotating component of a rotating machine is provided. The system includes a clearance sensor to output a clearance measurement signal. A sensor memory is attached to the sensor for storing a first sensor information. A second sensor information is stored in a electronics interface memory. The first and the second sensor information are read and the clearance sensor is matched with a respective plurality of calibration data by an electronic interface based on the first and the second sensor information. | 07-29-2010 |
20100188101 | Method And System For Synchronous Rectification - The method and system of the present invention uses synchronous rectification and frequency domain analysis to remove the need for calibration of the A/D and D/A components. It is applicable to any sensor based measurement in which either the sensor can be excited with an AC voltage or current, or in which the signal can be modulated with an AC voltage or current. | 07-29-2010 |
20100188102 | SEMICONDUCTOR DEVICE - A semiconductor device includes a signal generating circuit that generates an impedance adjustment command signal which indicates at least one of initiation and termination of an impedance adjustment. The semiconductor device outputs an output signal in synchronism with the impedance adjustment command signal. | 07-29-2010 |
20100231230 | Calibration Module Shield and Protection Method - An apparatus and method for preventing access to calibration controls includes a primary cover including a connection device, an access opening and a first through hole. The primary cover is configured to exclude access to an underlying area. The access opening is located on the primary cover to permit access to the underlying area when securing the primary cover. A shield is configured to fit over the primary cover and prevent access to the access opening. The shield includes a latch portion configured to latch on a first end portion of the primary cover and a second through hole located at a second end portion and corresponding to the first through hole of the primary cover. A security mechanism is configured to be received in the first and second through holes such that the security mechanism shows signs of tampering when unauthorized access to the underlying area is attempted. | 09-16-2010 |
20100231231 | METHOD FOR CALIBRATING APPARATUSES FOR DETERMINING THE MOISTURE CONTENT OF PRODUCTS BASED ON CAPACITIVE MEASUREMENTS, AND DEVICE FOR SIMULATING THE DIELECTRIC PROPERTIES OF PRODUCTS, SUCH AS WOOD, FOR USE IN THIS METHOD - A method for calibrating apparatuses for determining the moisture content of products based on capacitive measurements comprises the following operating steps:
| 09-16-2010 |
20100264937 | LIQUID CONCENTRATION SENSING DEVICE - A capacitance sensing section senses a capacitance between first and second electrodes. A temperature sensing section senses fuel temperature. A microcomputer functions as a concentration sensing section and senses a concentration of ethanol contained in fuel based on the capacitance sensed by the capacitance sensing section and the temperature sensed by the temperature sensing section. The microcomputer functions as an abnormality detecting section and performs abnormality determination to determine that an abnormality has occurred in the capacitance sensing section when the capacitance sensed by the capacitance sensing section does not change and the temperature sensed by the temperature sensing section changes. Since a dielectric constant has such a temperature characteristic that the dielectric constant changes with the temperature, the abnormality detecting section can detect occurrence of the abnormality in the capacitance sensing section. | 10-21-2010 |
20100295555 | APPARATUS AND METHOD FOR GENERATING A DEFINED CHARGE PULSE FOR CARRYING OUT A PARTIAL DISCHARGE MEASUREMENT - A calibrator apparatus for calibrating the performance of partial discharge measurements at electrical components, such as high voltage cables or transformators, comprises a housing ( | 11-25-2010 |
20100321032 | Pre-Settable Current Sensing Apparatus, System, and/or Method - The present invention relates to electromechanical device status monitoring and equipment protection applications for industrial automation, HVAC, and other implementations; and, more particularly, to the use of current sensing devices to detect loss-of-flow conditions. Presently described embodiments can comprise simplified, compact current sensing devices that can be economical to build, inventory, distribute, and purchase. Present embodiments can easily be calibrated and/or set by hand prior to installation, and they can be configured for automatically offering proof-of-flow detection based, at least in part, on the initially provided setting. | 12-23-2010 |
20100321033 | Method and System for Optimal Source Impedance Matching at the Input of Electronic Components, Particularly Transistors - A method for determining optimal source impedance at the input of a device under testing (DUT) in a measurement bench, includes the steps of calibrating a source pull type bench as a measurement bench, adjusting a load impedance and continuous bias of the DUT, generating an electric power signal by the source and injected in the DUT, acquiring input impedances of the DUT and corresponding gain performances. | 12-23-2010 |
20110001488 | OPTIMIAL DRIVE FREQUENCY SELECTION IN ELECTRICAL TOMOGRAPHY - Electrical tomography drive frequency selection systems and methods are disclosed. One aspect of the present invention pertains to a system for optimally selecting a drive frequency of an electrical tomography which comprises a sensor electrode stably associated with a tissue site within an internal organ of a subject for generating an induced signal based on a noise signal over a range of frequency bands, wherein an electrical field for the electrical tomography is turned off. In addition, the system comprises a noise processing module for isolating the induced signal for each frequency band over the range of frequency bands. Furthermore, the system comprises a frequency select module for selecting a drive frequency of the electrical field for the electrical tomography by comparing the induced signal for each frequency band over the range of frequency bands. | 01-06-2011 |
20110074440 | METHOD AND SYSTEM FOR COMPENSATING FOR VARIATION IN ATTENUATION MEASUREMENTS CAUSED BY CHANGES IN AMBIENT TEMPERATURE - A method and apparatus for determining the attenuation of an RF signal caused by a DPF at an unknown or different ambient temperature than the temperature used for DPF sensor calibration is disclosed. The method and apparatus determine the sensor attenuation just prior to determining the DPF attenuation by disconnecting the antennas and determining the attenuation of a loopback path. This sensor attenuation can then be deducted from the attenuation determined for the normal path that includes the attenuation caused by the loopback path, the cables, and the DPF. This method compensates for variation in the attenuation of the sensor caused by changes in ambient temperature of the sensor. Further temperature compensation is be achieved by determining additional factors to account for variations caused by changes in ambient temperature. | 03-31-2011 |
20110074441 | Low Capacitance Signal Acquisition System - A low capacitance signal acquisition system has a signal acquisition probe having a low capacitance input circuit coupled to a compensation amplifier in a signal processing instrument via a signal cable. The low capacitance input circuit, the signal cable and the signal processing instrument input have mismatched time constants with the compensation amplifier having feedback loop circuitry providing adjustable gain and pole-zero pairs for maintaining flatness over the low capacitance signal acquisition system frequency bandwidth. | 03-31-2011 |
20110080178 | CALIBRATION METHOD FOR INERTIAL DRIVE ACTUATOR, AND INERTIAL DRIVE ACTUATOR DEVICE - A calibration method for an inertial drive actuator of detecting a position of a moving body based on an electrostatic capacitance is proposed. The calibration method includes driving the moving body; outputting a first signal for detecting the electrostatic capacitance of opposing parts of a moving body side electrode provided on the moving body and a detecting electrode provided opposing the moving body side electrode; receiving a second signal obtained after the first signal output at the outputting has passed through the moving body side electrode and the detecting electrode; and calculating an optimum first signal based on the second signal received at the receiving. | 04-07-2011 |
20110084706 | ELIMINATING INLINE POSITIONAL ERRORS FOR FOUR-POINT RESISTANCE MEASUREMENT - Calculating resistance correction factors includes contacting the arms of a four-arm probe with a test sample; selecting a first set of first and second arms and a second set of third and fourth arms; applying a first current from the first arm to the second arm of the first set; detecting a first voltage between the third and fourth arms of the second set; calculating a first resistance using the first voltage and current; selecting a third set of first and second arms including no more than one arm of the first set, and a fourth set of third and fourth arms including no more than one arm of the second set; applying a second current from the first arm to the second arm of the third set; detecting a second voltage between the third and fourth arms of the fourth set; calculating a second resistance using the second voltage and current; and calculating a correction factor using the first and second resistances. | 04-14-2011 |
20110101994 | Calibration Apparatus And Method For Capacitive Sensing Devices - A calibration apparatus and method for a capacitive sensing device, in which a calibration capacitor device connects to the capacitive sensing device which is connected to an integration circuit that generates a voltage output and a latch output, a transforming circuit transforms a sensitivity calibration parameter into a pair of corresponding analog signal outputs, and an offset calibration parameter into a corresponding analog signal output, at least two first switches between the pair of corresponding analog signal outputs and a fixed potential according to system clock's levels, and at least a third switch switches between the corresponding analog signal output and another fixed potential according to the system clock's levels. The apparatus determines the switch between the pair of signal outputs according to the latch output. | 05-05-2011 |
20110101995 | METHOD OF AND SYSTEM FOR STABILIZATION OF SENSORS - A blood glucose sensing system includes a sensor and a sensor electronics device. The sensor includes a plurality of electrodes. The sensor electronics device includes stabilization circuitry. The stabilization circuitry causes a first voltage to be applied to one of the electrodes for a first timeframe and causes a second voltage to be applied to one of the electrodes for a second timeframe. The stabilization circuitry repeats the application of the first voltage and the second voltage to continue the anodic-cathodic cycle. The sensor electronics device may include a power supply, a regulator, and a voltage application device, where the voltage application device receives a regulated voltage from the regulator, applies a first voltage to an electrode for the first timeframe, and applies a second voltage to an electrode for the second timeframe. | 05-05-2011 |
20110109323 | Calibration Structure For Flex Fuel Sensor - A calibration structure ( | 05-12-2011 |
20110115497 | SELECTIVELY ACTUATING WIRELESS, PASSIVE IMPLANTABLE SENSOR - A wireless sensor having a primary passive electrical resonant circuit that has an intrinsic electrical property that is variable in response to a characteristic of a patient and a secondary passive electrical resonant circuit. In one aspect, the primary passive resonant circuit can be positioned into a tuned position in response to the actuation of the secondary passive electrical resonant circuit. In a further aspect, in the tuned position, the primary passive electrical resonant circuit, in response to an energizing signal produced by an ex-vivo source of RF energy, is configured to generate a sensor signal characterized by a resonant frequency that is indicative of the characteristic. | 05-19-2011 |
20110128014 | POSITION SENSOR - Position sensor ( | 06-02-2011 |
20110140715 | METHODS FOR MEASURING DIELECTRIC PROPERTIES OF PARTS - A method is disclosed for calibrating a capacitance of an apparatus for measuring dielectric properties of a part. The apparatus includes an electrically grounded chamber, a lower electrode disposed within the chamber and connected to a radiofrequency (RF) transmission rod, an electrically grounded upper electrode disposed within the chamber above the lower electrode, and a variable capacitor connected to control transmission of RF power through the RF transmission rod to the lower electrode. A method is also disclosed for determining a capacitance of a part through use of the apparatus. A method is also disclosed for determining a dielectric constant of a part through use of the apparatus. A method is also disclosed for determining a loss tangent of a part through use of the apparatus. | 06-16-2011 |
20110163761 | PARTICULATE MATTER DETECTION DEVICE AND INSPECTION METHOD OF THE PARTICULATE MATTER DETECTION DEVICE - The particulate matter detection device of the present invention is a particulate matter detection device | 07-07-2011 |
20110169502 | Power Calibration System - A calibration system for calibrating power sensors comprises a signal generator, a first signal splitter, a second signal splitter, a third signal splitter, a first measuring point, a second measuring point, a test port and a first power sensor. In this context, the signal generator is connected to the input of the first signal splitter. A first output of the first signal splitter is connected to the second signal splitter. A first output of the second signal splitter is connected to the test port. A second output of the second signal splitter is connected to the first measuring point. A second output of the first signal splitter is connected to the third signal splitter. A first output of the third signal splitter is connected to the first power sensor. A second output of the third signal splitter is connected to the second measuring point. | 07-14-2011 |
20110181297 | Communicating with an Implanted Wireless Sensor - The present invention determines the resonant frequency of a sensor by adjusting the phase and frequency of an energizing signal until the frequency of the energizing signal matches the resonant frequency of the sensor. The system energizes the sensor with a low duty cycle, gated burst of RF energy having a predetermined frequency or set of frequencies and a predetermined amplitude. The energizing signal is coupled to the sensor via magnetic coupling and induces a current in the sensor which oscillates at the resonant frequency of the sensor. The system receives the ring down response of the sensor via magnetic coupling and determines the resonant frequency of the sensor, which is used to calculate the measured physical parameter. The system uses a pair of phase locked loops to adjust the phase and the frequency of the energizing signal. | 07-28-2011 |
20110193564 | CEMENT EXPANSION MEASUREMENT APPARATUS AND METHOD - An apparatus for measuring cement expansion comprises an expansion cell that comprises two nodes separated by a slit. The nodes are separated by a distance such that a change of the distance between the nodes may be correlated to a linear expansion of cement contained in the expansion cell. An electrical component is coupled to the two nodes, and the electrical component has an electrical property that may be correlated to the distance between the nodes. Measurement of the electrical-property change may be performed continuously and in real time. In addition, the expansion cell may be placed in a vessel equipped to simulate downhole pressure and temperature conditions. | 08-11-2011 |
20110204901 | APPARATUS AND METHOD FOR REACTIVE POWER COMPENSATION OF A TEST TRANSFORMER - An apparatus and a method for reactive power compensation of a test transformer with an inductor and a stepped capacitor bank and a generator. The generator is used for generating a generator current and a generator voltage with a predeterminable test frequency. The inductance of the inductor can be set and can be interconnected with a stepped capacitor bank in such a way that the generator can be operated on virtually exclusive active power. Within the test circuit, the generator is therefore almost always set at an optimum operating point for testing of the test transformer and does not need to be dimensioned to be any larger than required. As a result, the power of the generator can be used in optimum fashion for generating the generator voltage and, as a result of the reduction in the component part sizes which is carried out on the essential components in the test circuit, enables the mobile use of the entire apparatus for in-situ testing of the power transformer to be tested. | 08-25-2011 |
20110227585 | SYSTEMS AND METHODS FOR ONLINE PHASE CALIBRATION - A system for online relative phase calibration is provided. The system includes at least one excitation source configured to generate multiple excitation signals. The system also includes at least two sensors coupled to respective ones of the at least one excitation source via a transmission line, wherein the two sensors are configured to receive respective ones of the excitation signals. The system further includes at least two phase detectors configured to receive at least two reflected signals from the two sensors via the transmission line, wherein each of the two phase detectors are configured to output a respective voltage representing a phase difference between respective ones of the reflected signals and respective ones of the excitation signals. The system also includes a switch coupled to the sensors and the phase detectors, the switch configured to switch the phase detectors between the sensors at a pre-determined switching interval. The system further includes a calibration module coupled to the phase detectors, wherein the calibration module is configured to receive and process the respective voltage from the at least two phase detectors to generate respective calibrated voltage signals, wherein the calibration module is further configured to and match the calibrated voltage signals of each of the phase detectors. | 09-22-2011 |
20110248723 | CAPACITIVE SENSOR HAVING CALIBRATION MECHANISM AND CAPACITIVE SENSING METHOD - A capacitive sensor with a calibration mechanism is provided. The capacitive sensor includes a set of sensing capacitors to generate a capacitance variation, a subtraction circuit and an integration circuit. The subtraction circuit includes a first capacitor array to generate offset-adjusting charges and a second capacitor array to generate subtraction charges according to an initial offset and a sensitivity of the sensing capacitors respectively. The integration circuit includes two input ends, wherein one of them is connected to the sensing capacitors and the subtraction circuit. During a sensing period, the integration circuit performs integration according to the capacitance variation and performs cancellation of the effect of the initial offset according to the offset-adjusting charges to generate an integration output signal that is continuously subtracted by the subtraction charges during a computing period to generate a subtraction count. A capacitive sensing method is disclosed herein as well. | 10-13-2011 |
20110254565 | CAPACITIVE SENSING SYSTEM WITH DIFFERENTIAL PAIRS - A capacitive sensing system comprising two or more capacitive sensors, one or more AC power sources for energizing the capacitive sensors, and a signal processing circuit for processing signals from the sensors. The sensors are arranged in pairs, wherein the one or more AC power sources are arranged to energize a first sensor of a pair of the sensors with an alternating current or voltage 180 degrees out of phase to a current or voltage for a second sensor of the pair of sensors, and wherein a pair of the sensors provides a measuring unit for a single measured distance value, the signal processing circuit receiving an output signal from each sensor of the pair and generating a measured value related to the average distance between the sensors of the pair and the target. | 10-20-2011 |
20110260736 | Apparatuses and systems for density gauge calibration and reference emulation - Apparatuses and systems for emulating electrical characteristics of a material having a known dielectric response are disclosed for standardizing and calibrating of electromagnetic devices. The emulator apparatus can include an electrically non-conductive layer having a dielectric constant less than the material dielectric constant and an electrically conductive layer adjacent the non-conductive layer. Artificial dielectrics for emulating the dielectric response of a material are also disclosed including a substrate matrix having a dielectric constant less than the material dielectric constant and an additive combined with the substrate, the additive having a dielectric constant higher than the material dielectric constant. | 10-27-2011 |
20110285403 | SENSOR CIRCUIT - A method of measuring signals related to a photodiode based sensor and calculating a corrected data value thereof is disclosed. A nominal reset voltage value of the photodiode may be measured. A knee point voltage may be applied to the photodiode and resets a voltage on the photodiode to the knee point voltage when the voltage on the photodiode falls below the knee point voltage. Applying the knee point voltage may extend the dynamic range of the sensor. An output voltage of the photodiode at end of an integration time of the photodiode may be measured. The knee point voltage may be applied again after the end of the integration time. A voltage value of the photodiode of the knee point voltage may be measured. The nominal reset voltage value, the output voltage of a sensor and the knee point voltage may be reported to calculate the corrected data value. | 11-24-2011 |
20110291669 | METHOD AND DEVICE FOR AUTOMATICALLY CALIBRATING TOUCH DETECTION - A method and device for automatically calibrating touch detection is disclosed. The present invention includes providing a sensing layer including a plurality of sensors, and each sensor senses a sensing range, and the sensing ranges of the sensors intersecting each other to form a crossing array; continuously detecting signals of the sensors as a detection signal set; performing update of an initial signal set based on the detection signal set; and when a default signal set does not match the initial signal set and the default signal set matches the detection signal set, performing update of the initial signal set. | 12-01-2011 |
20110291670 | CONDUCTIVITY MEASUREMENT CELL - The application relates to a conductivity measurement cell for measuring the concentration of a preselected biomarker or analyte in a body fluid, such as urine. In order to reduce the effect of sample dilution on measured concentration, the measured concentration can be normalised by a dilution factor, which can be determined from electrical conductivity. A test strip and measurement apparatus is disclosed for performing such normalised concentration measurement. | 12-01-2011 |
20110298473 | DYNAMIC COMPENSATION OF AGING DRIFT IN CURRENT SENSE RESISTOR - A current sense resistor circuit may include a primary current sense resistor that drifts with age. A secondary current sense resistor may drift with age in substantial unison with the primary current sense resistor. A calibration resistor may not drift with age in substantial unison with the primary current sense resistor. A compensation circuit may compensate for aging drift in the resistance of the primary current sense resistor based on a comparison of the calibration resistor with the secondary current sense resistor. The secondary current sense resistor may be in parallel with the primary current sense resistor, except when the compensation circuit is comparing the calibration resistor with the secondary current sense resistor. | 12-08-2011 |
20110316556 | CALIBRATING A CHANNEL OF A TEST SYSTEM - Circuitry includes a circuit path that corresponds to a channel of system for testing a device, an element in the circuit path, a first device to measure an electrical parameter associated with the element, a second device to obtain an error signal associated with the channel, and a feedback path electrically connected to the second device to pass the error signal or another signal. | 12-29-2011 |
20110316557 | TEST APPARATUS AND TEST METHOD - A test apparatus that tests a device under test, comprising a signal output section that outputs a test signal for testing the device under test; a signal acquiring section that acquires a device signal output by the device under test; and an adjusting section that adjusts a signal output timing at which the signal output section outputs the test signal, according to a delay caused by a transmission path that connects the signal output section and the signal acquiring section to the device under test. The adjusting section includes a rising edge adjusting section that adjusts the signal output timing of a rising edge of the test signal based on a timing at which the signal acquiring section acquires a rising edge of a reflected signal resulting from a rising edge of an adjustment test signal output from the signal output section being reflected at an end of the transmission path on the device under test side; and a falling edge adjusting section that adjusts the signal output timing of a falling edge of the test signal based on a timing at which the signal acquiring section acquires a falling edge of a reflected signal resulting from a falling edge of the adjustment test signal output from the signal output section being reflected at the end of the transmission path on the device under test side. | 12-29-2011 |
20120007604 | TRL Calibration Method for a Microwave Package And a Set of Standard Packages - A method of calibrating a test platform for microwave packages is provided. According to the invention, the conventional Thru, Reflect and Line standard patterns are replaced by microwave standard packages fulfilling similar functions, the test platform being adapted accordingly. The use of standard packages makes it possible to retain the same electrical interface between each of the packages and the test platform. The invention also relates to a method of determining an electrical length L | 01-12-2012 |
20120013350 | Apparatus for imitating thermal conductivity and electrical resistance of diamonds and their substitutes - The invention relates to devices which exhibit some physical properties, namely thermal conductivity and electrical resistance of diamonds and their popular imitations, and method for manufacturing and usage of such device. These physical properties of gems are usually used by commercial gem testers for the purpose of distinguishing true diamonds from the fakes. The imitations are made of inexpensive metals, like brass and stainless steel, and conductive plastics, and can replace more costly diamonds and other gems, like moissanite, white sapphire, and others for the purpose of verification of correct operation of gem testing devices. | 01-19-2012 |
20120019261 | CALIBRATION OF CONDUCTIVITY MEASUREMENT SYSTEM - A system and method for calibrating a digital conductivity and temperature measuring system. A connector is interposed between a sensor and transmitter of the digital conductivity and temperature measuring system. A calibrator, which may have selectable resistors with known values, is also attached to the connector. The sensor measures a raw resistance for a selected resistor. The digital conductivity and temperature measuring system then compares the raw resistance to the known value of the resistor to calculate a calibration factor. | 01-26-2012 |
20120032686 | VOLTAGE SOURCE FOR CALIBRATING A FAST TRANSIENT VOLTAGE MEASUREMENT SYSTEM AND CALIBRATION METHOD - The present disclosure discloses a voltage source for calibrating a fast transient voltage measurement system, comprising a DC high voltage power supply, a discharging gap, a high voltage conductor and an earthing conductor, wherein the high voltage conductor and the earthing conductor are high voltage insulated from each other and form a traveling wave line with constant wave impedance; the DC high voltage power supply is connected between the ends of the high voltage conductor and the earthing conductor; the discharging gap is connected between ends of the high voltage conductor and the earthing conductor; the discharging gap is broken down when the charging voltage on the high voltage conductor is risen to a certain amplitude. The present disclosure also provides a method for calibrating a fast transient voltage measurement system: the high voltage conductor is insulated from the earthing conductor, and is open circuit at one end and at the other end connected with the earthing conductor via the discharging gap, the high voltage breaks down the discharging gap, applying a high voltage between the high voltage conductor and the earthing conductor, a very fast transient high voltage is produced on the high voltage conductor and its waveform can be determined by theoretical calculation, the very fast transient high voltage with known waveform is used as the calibration voltage for calibrating the measurement system. This reaches the purpose of simplifying the structure of voltage source for calibrating the fast transient voltage measurement system as well as the calibration method. | 02-09-2012 |
20120043970 | Automatic Tuning of a Capacitive Sensing Device - An apparatus, system and method for automatically tuning a capacitance sensor based on comparisons of measured capacitance values to expected values and ranges of values is described. Measured capacitance is converted to a digital value with a capacitance to digital converter. The digital value is use to adjust the range, resolution, baseline offset and thresholds of the capacitance sensor according to logic executed by a controller and stored in programs in a memory. | 02-23-2012 |
20120056627 | METHODS, SYSTEMS, AND COMPUTER PROGRAM PRODUCTS FOR DETERMINING A PROPERTY OF CONSTRUCTION MATERIAL - Methods, systems, and computer program products for determining a property of construction material. According to one aspect, a material property gauge operable to determine a property of construction material is disclosed. The gauge may include an electromagnetic sensor operable to measure a response of construction material to an electromagnetic field. Further, the electromagnetic sensor may be operable to produce a signal representing the measured response by the construction material to the electromagnetic field. An acoustic detector may be operable to detect a response of the construction material to the acoustical energy. Further, the acoustic detector may be operable to produce a signal representing the detected response by the construction material to the acoustical energy. A material property calculation function may be configured to calculate a property value associated with the construction material based upon the signals produced by the electromagnetic sensor and the acoustic detector. | 03-08-2012 |
20120062241 | DEVICE FOR PROTECTING A CONNECTOR AND A COMMUNICATIONS WIRE OF A MEMORY CARD READER - A device is provided for protecting an electronic payment terminal that includes an electronic printed circuit board and a casing. The device includes at least one capacitive detector in a volume formed by a first ground plane of the printed circuit and a second ground plane positioned on an internal surface of the casing, the at least one capacitive detector being configured to deliver a reference capacitance. A capacitive measurement microprocessor detects a variation of capacitance of the at least one capacitive detector. A transmitter transmits the variation when an absolute value of a difference between the reference capacitance and the measured capacitance exceeds a predetermined threshold. | 03-15-2012 |
20120086462 | TEST APPARATUS - A power supply compensation circuit generates a compensation pulse current when a switch element is turned on. A pattern generator generates a test pattern that specifies a test signal to be output from a driver and a control signal to be output from the driver. In a calibration step, a voltage measurement unit measures the power supply voltage. A current adjustment unit adjusts the compensation pulse current to be generated in a test step after the calibration step. | 04-12-2012 |
20120098548 | OCCUPANT DETECTION SENSOR TESTING APPARATUS AND METHOD - A testing apparatus for testing whether an occupant detection sensor normally operates is disclosed. The testing apparatus includes: a ground that is an electrically-conductive structural member of the seat; an electrode plate that is electrically-conductive and is on the seat at a time of testing; multiple capacitors that are electrically connected between the electrode plate and the ground and are different in electrostatic capacity from each other; a switch mechanism that selects and switches one capacitor of the multiple capacitors; and a determination result check portion that determines, while switching the one capacitor by the switch mechanism, whether a signal outputted from the occupant detection sensor is a determination result corresponding to the switched one capacitor. | 04-26-2012 |
20120105076 | METHOD OF CORRECTING RESISTIVITY MEASUREMENTS FOR TOLL BENDING EFFECTS - A method for correcting subterranean resistivity measurements to account for tool bending includes processing at least one coupling component and at least one cross-coupling component in combination with a tool bending angle. Such processing may, for example, remove one or more coupling components from a cross-coupling component. Removal of the coupling component(s) tends to increase the sensitivity of directional resistivity measurements to remote boundaries. | 05-03-2012 |
20120119756 | DETECTION METHOD OF LOW FREQUENCY HANDSHAKING SIGNAL - A detection method of low frequency handshaking signal is described. The method includes the following steps of: (a) performing first impedance calibration when host device is activated for sending a first low frequency signal based on the first impedance calibration and performing a second impedance calibration when a controlled device is activated for sending a second low frequency signal based on the second impedance calibration; (b) transmitting a first high frequency training signal from the host device to the second receiver of the controlled device when the first low frequency signal and the second low frequency signal are in a predetermined condition; and (c) transmitting a second high frequency training signal from the controlled device to the first receiver of the host device wherein the frequency of the first low frequency signal and the second low frequency signal is smaller than the frequency of the first high frequency training signal and the second high frequency training signal. | 05-17-2012 |
20120126824 | ANALOG CIRCUIT TEST DEVICE - The invention relates to a test device ( | 05-24-2012 |
20120169351 | SIGNAL MEASUREMENT SYSTEMS AND METHODS - Signal measuring systems, and measurement methods are disclosed. | 07-05-2012 |
20120169352 | Method of testing electric field recording of a marine electromagnetic sensor cable - A method of testing the electric field recording of a marine electromagnetic sensor cable including electrodes is provided. The method includes causing time varying current to flow between at least one pair of current electrodes disposed along the marine electromagnetic sensor cable. The flow of current generates a voltage in a body of water, thereby causing a secondary field impressed on a pair of sensor electrodes disposed along the marine electromagnetic sensor cable. A potential difference between the pair of sensor electrodes is measured. Accuracy of the electric field recording is inferred from the measured potential difference | 07-05-2012 |
20120217978 | BACKGROUND NOISE MEASUREMENT AND FREQUENCY SELECTION IN TOUCH PANEL SENSOR SYSTEMS - A touch panel sensor system that can dynamically measure noise and automatically switch to a frequency with minimal noise is described. The touch panel sensor system includes a sensor configured to detect a change in capacitance associated with a touch upon a touch panel. The system also includes a drive module configured to generate a drive signal having a first waveform characteristic (e.g., signal having a periodic waveform characteristic) during a first phase (e.g., sensor phase) and a second drive signal having a second waveform characteristic (e.g., constant voltage signal) during a second phase (e.g., noise detection phase). The first and second drive signals are configured to drive the sensor. The system also includes a measuring module coupled to the sensor that is configured to measure noise having the first waveform characteristic (e.g., periodic waveform characteristic) during the second phase. | 08-30-2012 |
20120249161 | LOAD SIMULATOR - A load simulator includes a passive element, two electrode plates that are connected to the passive element, and a bias applier. The bias applier is a coil spring, for example, and is provided between the two electrode plates. The bias applier biases at least one of the two electrode plates in a predetermined direction. The two electrode plates are disposed so as to be substantially parallel with each other, for example, and the bias applier biases the two electrode plates in the direction of separation from each other. | 10-04-2012 |
20120249162 | SIMULATION OF PRINTED CIRCUIT BOARD IMPEDANCE VARIATIONS AND CROSSTALK EFFECTS - A method for altering an impedance of a conductive pathway on a microelectronic package includes applying a magnetic field to the conductive pathway. The microelectronic package may be, for example, a printed circuit board. The method also includes controlling a magnitude of the magnetic field at the conductive pathway for altering the impedance of the conductive pathway. The magnetic field may be applied by, for example, an electromagnet or a permanent magnet. A magnetic field may also be applied for simulating crosstalk effects on a conductive pathway. | 10-04-2012 |
20120268139 | DEVICE FOR DETECTING A LEVEL - In order to provide a device ( | 10-25-2012 |
20120268140 | Signal Acquisition System Having a Compensation Digital Filter - A signal acquisition system has a signal acquisition probe having probe tip circuitry coupled to a resistive center conductor signal cable. The resistive center conductor signal cable is coupled to a compensation system in a signal processing instrument via an input node and input circuitry in the signal processing instrument. The signal acquisition probe and the signal processing instrument have mismatched time constants at the input node with the compensation system having an input amplifier with feedback loop circuitry and a compensation digital filter providing pole-zero pairs for maintaining flatness over the signal acquisition system frequency bandwidth. | 10-25-2012 |
20120274337 | Method and Apparatus for Diagnosing Electrochemical Sensor - A method and apparatus for diagnosing an electrochemical sensor that detects the concentration of a gas are operative for diagnosing whether or not the sensor is in an error state due to a rise in a resistance in the electrolyte of the sensor. Such detection is made on the basis of a current flowing between a sensing electrode and an opposite electrode or a voltage corresponding to the current. A method for diagnosing an electrochemical sensor having a solid or liquid electrolyte between a sensing electrode and an opposite electrode detects the concentration of the gas to be detected on the basis of a current flowing between the sensing electrode and the opposite electrode, or a voltage corresponding to the current. Whether or not the electrochemical sensor is in an error state is diagnosed on the basis of a resistance of the electrolyte between the two electrodes of the electrolyte. | 11-01-2012 |
20130002265 | Methods and Devices for Determining Sensing Device Usability - Methods and devices for determining device usability, e.g., for point of care assay devices. In one embodiment, the invention is to a method of determining device usability in a sensing device, including the steps of: providing a device comprising a first electrical pad; a second electrical pad; and a first polymer layer contacting at least a portion of the first and the second electrical pads and a second polymer layer contacting the first polymer layer and not the first and second electrical pads; applying a potential across the first and the second electrical pads; measuring an electrical property associated with the first and the second polymer layers; and determining whether the measured electrical property associated with the first and the second polymer layers has exceeded a threshold level associated with the device usability. | 01-03-2013 |
20130038336 | Probe Calibration Device and Calibration Method - A calibration device applied for a test apparatus with at least a first probe and a second probe, the calibration device comprising: a first testing region and a second testing region, the first testing region and the second testing region divides into n×n sensing units respectively, the first testing region for generating n×n average electricity corresponding to a contact degree of the first probe contacted with the calibration device, and the second testing region for generating another n×n average electricity corresponding to a contact degree of the second probe contacted with the calibration device, and the pitch is the distance between the center of the first testing region to the center of the second testing region that is the same as that of the center of the first probe to the center of the second probe. | 02-14-2013 |
20130043884 | METHOD AND APPARATUS FOR CALIBRATING DEEP-READING MULTI-COMPONENT INDUCTION TOOLS WITH MINIMAL GROUND EFFECTS - An apparatus and method for calibrating a multi-component induction logging tool. The method may include orienting a Z-transmitter coil to be substantially orthogonal to at least one Z-receiver coil, positioning an X-transmitter coil disposed on the logging tool so that the X-transmitter coil is substantially parallel to a conducting surface; encompassing the Z-transmitter coil, the X-transmitter coil, and at least one Z-receiver coil of the logging tool with at least one conducting loop of a calibrator; and calibrating the logging tool using the calibrator. The apparatus may include a calibrator configured to receive the logging tool. The Z-transmitter coil and the Z-receiver coil may be located on separate subs that are detachable from one another. | 02-21-2013 |
20130063155 | FUEL PROPERTY DETECTION DEVICE AND METHOD FOR DETERMINING DETECTION OF PROPERTY OF FUEL - First, second, and third electrodes are exposed to a fuel passage. The third electrode defines a first gap with the first electrode and defines a second gap with the second electrode. A property detection unit detects a property of fuel according to a summation of a first capacitance of the first gap and a second capacitance of the second gap. A correct-erroneous determination unit determines whether the property detected with the property detection unit is correct or erroneous according to a ratio of the summation and the first capacitance. | 03-14-2013 |
20130063156 | AUTO-CALIBRATING PROXIMITY SENSOR FOR RETAIL DISPLAY SECURITY SYSTEM - An auto-calibrated proximity sensor used with a protected item in a retail display security system includes a metalized surface that cooperatively interacts with a printed circuit board to form a capacitive cell. A microcontroller senses changes in the frequency of the capacitive circuit if the orientation of the metalized surface changes with respect to the printed circuit board. | 03-14-2013 |
20130076372 | CHARACTERIZATION AND CORRECTION OF VOLTAGE PROBE, CURRENT PROBE AND CABLE - Responses of voltage and current probes are characterized or corrected. A voltage probe method includes measuring output of the voltage probe and a first output of a through, in response to an input signal applied to the through, with the voltage probe connected, measuring a second output of the through with the voltage probe disconnected, and characterizing the response of the voltage probe using the output of the voltage probe and the first and/or second outputs. A current probe method includes measuring output current of the current probe and first output current of a through, in response to an input signal applied to the through with the current probe connected in series, measuring second output current of the through with the current probe disconnected, and characterizing the response of the current probe using the output current of the current probe and the first and/or second output currents of the through. | 03-28-2013 |
20130134988 | METHOD AND SYSTEM FOR HIGH GAIN AUTO-ZEROING ARRANGEMENT FOR ELECTRONIC CIRCUITS - A method and system for high gain auto-zeroing arrangement for electronic circuits. An auto-zero electronic circuit eliminates an offset associated with a test electronic circuit. The test electronic circuit includes a pair of input terminals configured to receive an input voltage signal and a pair of output terminals. The auto-zero electronic circuit includes a pair of source followers, and a pair of capacitors coupled to the output terminals of the test electronic circuit for sampling the offset associated with the test electronic circuit. The auto-zero electronic circuit also includes a differential pair coupled to the pair of source followers. A pair of diode-connected transistors, coupled to the differential pair, is configured to generate biasing voltage signals. The biasing voltage signals modulate the control terminals of a pair of input source followers of the test electronic circuit and eliminate the offset associated with the test electronic circuit. | 05-30-2013 |
20130134989 | CALIBRATION RESISTANCE EMULATOR - The present disclosure relates generally to patient monitoring systems and, more particularly, to a resistance emulator for patient monitors. In an embodiment, a resistance emulator includes a first plug configured to couple with a medical monitor. The medical monitor is configured to receive a calibration resistance value of a medical device sensor from a coded resistor. The resistance emulator further includes a second plug configured to couple with a medical device sensor. The medical device sensor is configured without the coded resistor. The resistance emulator also includes emulation circuitry configured to provide an emulated signal representative of the calibration resistance value to the medical monitor. | 05-30-2013 |
20130134990 | CALIBRATION MEASUREMENTS FOR NETWORK ANALYZERS - A method for measuring s-parameters of an N-port device under test (DUT), using an N-port test fixture and a network analyzer. The method includes: measuring calibration errors of the N-port test fixture using a reduced set of N/2 calibration standards; measuring calibration errors due to the network analyzer by calibrating only the network analyzer using analyzer-only calibration standards; isolating test fixture s-parameters errors using results of the analyzer-only calibration standards measurement and the N-port test fixture calibration standard measurement; measuring the s-parameters errors of the DUT; and correcting the s-parameters errors of the DUT corresponding to the isolated test fixture s-parameters errors and the calibration errors of the network analyzer. | 05-30-2013 |
20130147492 | POWER CONSUMPTION MEASURING DEVICE - A power consumption measuring device includes an analog-to-digital converter and an arithmetic unit and serves to convert a current signal supplied to a load into a measurement digital signal by the analog-to-digital converter, send the measurement digital signal to the arithmetic unit for measuring a power consumption level of the load. The power consumption measuring device is characterized in that: the arithmetic unit selects a current gain value and a correction compensation value based on a current range into which the measurement digital signal falls and adapted to adjust a gain value of the analog-to-digital converter for reducing an error rate and enhancing accuracy of the next measurement digital signal. | 06-13-2013 |
20130154665 | POWER DETECTION CIRCUIT - There is provided a power detection circuit capable of appropriately adjusting detection voltage characteristics by using simple configuration. The power detection circuit includes a first resistor having current applied thereto to adjust a detection voltage value of input power, an element having an applied voltage and a load characteristic changed according to the input power, and a second resistor connected to the element and having current applied thereto when resistance of the element becomes relatively low, to adjust the detection voltage value of the input power. Detection voltage characteristics may be appropriately adjusted using a simple configuration. | 06-20-2013 |
20130154666 | LEAK DETECTION DEVICE, AND COATING INTENDED FOR A FLUID TRANSPORT OR STORAGE MEMBER AND COMPRISING SAID DETECTION DEVICE - The invention relates in particular to a method of covering a duct for transporting or storing a fluid in a device for detecting a leak of the fluid, the device comprising a layer of insulating fibrous material arranged to surround the duct and a layer of conductive material that extends against the layer of insulating material, the conductive material being essentially constituted by fibers of carbon or graphite, wherein the layer of insulating material is secured to the wall of the duct by strapping ties around said layer. | 06-20-2013 |
20130162266 | Resistance-Based Monitoring System and Method - A monitoring system for a support structure is provided. The monitoring system may include a resistance circuit coupled to the support structure, and an interface circuit coupled to the resistance circuit. The resistance circuit may include a first set of resistors and a second set of resistors, wherein the second set of resistors is configured to provide a reference voltage. The interface circuit may include one or more comparators, wherein each comparator is configured to compare a voltage across at least one of the resistors with the reference voltage and generate an output signal corresponding to the comparison. The interface circuit may be configured to continuously monitor an effective resistance of the support structure based on the output signals. | 06-27-2013 |
20130181723 | Current Measurement in a Power Transistor - A circuit arrangement includes a load transistor and a sense transistor. The first load terminal of the load transistor is coupled to the first load terminal of the sense transistor. A measurement circuit comprising a current source configured to provide a calibration current, the measurement circuit configured to measure a first voltage between the first load terminal and the second load terminal of the sense transistor in the on-state of the sense transistor, to determine a resistance of the sense transistor based on the calibration current and the first voltage, to measure a second voltage between the first load terminal and the second load terminal of the load transistor in the on-state of the load transistor, and to determine a load current through the load transistor based on the resistance of the sense transistor and the second voltage. | 07-18-2013 |
20130193982 | TECHNIQUES FOR CALIBRATING MEASUREMENT SYSTEMS - Techniques to provide calibration of a measurement system in conjunction with measurement operations. The techniques may include providing a reference device in a signal processing chain within the measurement system. An excitation signal may be driven through the reference device while it may be connected to the signal processing chain within the measurement system and a calibration response may be captured. During a measurement operation, the reference device connection may be complemented with a sensor connection in the signal processing chain and the excitation signal may be driven through the signal processing chain. A measurement response may be captured from the system. The measurement system may generate a calibrated measurement signal that accounts for phase and/or amplitude errors within the system from the calibration response and the measurement response. | 08-01-2013 |
20130207667 | Detection of a Dielectric Object - A measuring apparatus for detecting a dielectric object comprises a potential probe for determining an electric potential in an electric field, a first capacitance device, a second capacitance device, and a control device configured to supply alternating voltages to the first and the second capacitance devices. The control device is configured to amplify the alternating voltages in opposite directions to one another in order to minimize the magnitude of an AC voltage component, which is clock-synchronous with the alternating voltages, of a voltage which is recorded by means of the potential probe. The dielectric object is detected when a ratio of the alternating voltages does not correspond to a ratio of (i) a first distance of the potential probe from the first capacitance device to (ii) a second distance of the potential probe from the second capacitance device. | 08-15-2013 |
20130207668 | Simplified Resistance Based Belt Inspection - A resistance circuit for monitoring a support structure is provided. The resistance circuit may include a first set of resistors disposed at a belt-side and a second set of resistors disposed at a monitor-side. The first set of resistors may be configured to indicate one or more voltages thereacross corresponding to an effective resistance of the support structure. The first set of resistors may include at least one temperature-dependent resistor. The second set of resistors may be configured to indicate one or more voltages thereacross corresponding to an initial effective resistance of the support structure. The second set of resistors may include at least one switched resistor having an adjustable resistance capable of selectively approximating the initial effective resistance. | 08-15-2013 |
20130221984 | CALIBRATION UNIT FOR A MEASUREMENT DEVICE - A calibration unit for a measurement device for connecting to a connector embodied in a coaxial manner. The calibration unit provides a housing and an inner conductor, whereas the inner conductor ( | 08-29-2013 |
20130221985 | SIGNAL ACQUISITION SYSTEM HAVING REDUCED PROBE LOADING OF A DEVICE UNDER TEST - A signal acquisition system has a signal acquisition probe having probe tip circuitry coupled to a resistive center conductor signal cable. The resistive center conductor signal cable of the signal acquisition probe is coupled to a compensation system in a signal processing instrument via an input node and input circuitry in the signal processing instrument. The signal acquisition probe and the signal processing instrument have mismatched time constants at the input node with the compensation system providing pole-zero pairs for maintaining flatness over the signal acquisition system frequency bandwidth. | 08-29-2013 |
20130221986 | Method for Calibrating a Conductivity Measuring Cell - The invention relates to a method for calibrating a conductivity measuring cell located in a measurement setup for determining conductivity of a liquid medium, especially very pure water, by means of two electrodes of predetermined area arranged in the liquid medium at a predetermined separation relative to one another, supplied with an alternating voltage and having a cell constant, which is predetermined by separation and electrode area and must be calibrated. In order to be able to determine the cell constant independently of calibration standards with predetermined conductivity and/or reference measurement cells, an electrical capacitance of the measuring cell is ascertained by means of an alternating voltage placed on the electrodes in a frequency range between 1 kHz and 1 MHz, following which the cell constant is determined from the ascertained capacitance and the permittivity of the liquid medium contained in the measuring cell. | 08-29-2013 |
20130249566 | Kelvin Sense Probe Calibration - Calibrating automatic test systems for testing electronic components using Kelvin probes is taught. A nominal contact resistance of a Kelvin probe is measured using a test slug to replace an electronic component to be measured on the test system. The measured resistance is stored by the test system and can be used to compensate for a measured value for an electronic component. A test slug can be periodically inserted into the test system to update the contact resistance measure and/or track the contact resistance to measure Kelvin probe wear and/or contamination. | 09-26-2013 |
20130271154 | PROCESS AND SYSTEM FOR CALIBRATING A FIRST LOOP FEATURE VALUE ESTIMATION METHOD USING A FIRST LOCALLY MEASURABLE LOOP CHARACTERISTIC AND A FIRST SET OF PARAMETERS - A process for calibrating a first loop feature value estimation method using a first locally measurable loop characteristic and a first set of parameters, includes taking measurements of the first locally measurable loop characteristic for a plurality of loops, and obtaining a reference data set representing reference estimates of the loop feature value. The reference estimates are obtained by performing a calibrated second loop feature value estimation method using a second locally measurable loop characteristic and a second set of parameters. The method further includes determining calibrated parameters so as to minimize a deviation between the reference estimates and estimates obtained by applying the first estimation method to the measurements using the calibrated parameters as the first set of parameters. | 10-17-2013 |
20130328572 | APPLICATION OF ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY IN SENSOR SYSTEMS, DEVICES, AND RELATED METHODS - A diagnostic Electrochemical Impedance Spectroscopy (EIS) procedure is applied to measure values of impedance-related parameters for one or more sensing electrodes. The parameters may include real impedance, imaginary impedance, impedance magnitude, and/or phase angle. The measured values of the impedance-related parameters are then used in performing sensor diagnostics, calculating a highly-reliable fused sensor glucose value based on signals from a plurality of redundant sensing electrodes, calibrating sensors, detecting interferents within close proximity of one or more sensing electrodes, and testing surface area characteristics of electroplated electrodes. Advantageously, impedance-related parameters can be defined that are substantially glucose-independent over specific ranges of frequencies. An Application Specific Integrated Circuit (ASIC) enables implementation of the EIS-based diagnostics, fusion algorithms, and other processes based on measurement of EIS-based parameters. | 12-12-2013 |
20130328573 | APPLICATION OF ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY IN SENSOR SYSTEMS, DEVICES, AND RELATED METHODS - A diagnostic Electrochemical Impedance Spectroscopy (EIS) procedure is applied to measure values of impedance-related parameters for one or more sensing electrodes. The parameters may include real impedance, imaginary impedance, impedance magnitude, and/or phase angle. The measured values of the impedance-related parameters are then used in performing sensor diagnostics, calculating a highly-reliable fused sensor glucose value based on signals from a plurality of redundant sensing electrodes, calibrating sensors, detecting interferents within close proximity of one or more sensing electrodes, and testing surface area characteristics of electroplated electrodes. Advantageously, impedance-related parameters can be defined that are substantially glucose-independent over specific ranges of frequencies. An Application Specific Integrated Circuit (ASIC) enables implementation of the EIS-based diagnostics, fusion algorithms, and other processes based on measurement of EIS-based parameters. | 12-12-2013 |
20140002106 | MICROWAVE IMAGING BREAST PHANTOM, METHOD FOR TESTING RELIABILITY OF BREAST CANCER DIAGNOSTIC APPARATUS USING THE PHANTOM, AND BREAST CANCER DIAGNOSTIC APPARATUS INCLUDING THE PHANTOM | 01-02-2014 |
20140015543 | SIGNAL SAMPLER WITH A CALIBRATION CIRCUIT - A circuit configured to sample a signal of a source circuit and to provide calibration signals to a testing device of the signal sampled from the source circuit. The circuit may include an amplifier, a sampling circuit, and a calibration circuit. The amplifier may be configured to drive signals on an internal node to the testing device. The sampling circuit may be configured to provide a sample of a signal from the source circuit to the internal node. The calibration circuit may be configured to provide a first calibration signal and a second calibration signal to the internal node. The second calibration signal may be a known proportion of the first calibration signal. | 01-16-2014 |
20140028327 | METHOD FOR SENSOR READER CALIBRATION - In one embodiment a method for sensor reader calibration comprising: performing a calibration of a sensor reader wherein the calibration comprises open circuit calibration, a short circuit calibration, and a load circuit calibration, or any combination thereof in any succession; enabling connection of a pickup coil to the sensor reader to measure a sensor response; and applying a baseline correction to the sensor response, wherein the baseline correction is obtained utilizing measurements from the calibration step. In a further embodiment, a method for sensor response calibration incorporating environmental correction comprising: measuring a first resonance impedance spectrum of the sensor with a first applied power to the pickup coil; measuring a second resonance impedance spectrum of the sensor with a second applied power to the pickup coil; and applying a correction to the sensor response corresponding to the respective measured first and second resonance impedance spectrum to mitigate for environmental parameters. | 01-30-2014 |
20140055146 | SENSOR ARRANGEMENT AND METHOD - A sensor arrangement has a current regulator, a reference resistance a feed current scaler and a sensor element having an internal resistance, the internal resistance of the sensor element and the reference resistance having a predetermined ratio. The current regulator is implemented to provide a reference current by the reference resistance and to change the reference current in response to an interference influence-conditioned change of the reference resistance such that the voltage decreasing across the reference resistance remains in a predetermined range around an applied set voltage. The current regulator is implemented to provide a feed current to the feed current scaler and to change a magnitude of the feed current depending on a magnitude of the reference current. The feed current scaler is implemented to feed a scaled feed current into the sensor element to scale a voltage according to the scaling of the feed current. | 02-27-2014 |
20140118004 | Measurement Structure for Radio Frequency Scattering Parameter Measurement Applying Two Calibrators and Calibration Method Thereof - The present invention provides a measurement structure for radio frequency (RF) scattering parameter measurement applying two calibrators and a calibration method thereof, comprising an offset series device calibrator, an offset shunt device calibrator and a tested object measuring instrument. Herein the lengths of the transmission lines for the offset series device calibrator and the offset shunt device calibrator and the one of the transmission line for the tested object measuring instrument are equivalent such that the offset series device calibrator, the offset shunt device calibrator and the tested object measuring instrument have the identical error box. After having acquired the scattering parameter matrix for the error box through the calibration method, it is possible to connect a tested electronic device onto the tested object measuring instrument and perform operations on the uncorrected measurement data thereby obtaining the RF scattering parameters of the tested object. | 05-01-2014 |
20140125354 | HOT STICK POWER ANALYZER - A hot stick power analyzer includes a housing mounted on a pole and a channel for a power line. A ground line extends from the housing and there is a power line conductive contact. A voltage sensor includes voltage sensing circuitry connected to the power line conductive contact and the ground line. There is a high voltage capacitance between the ground line and the voltage sensing circuitry. A current sensor includes windings about and spaced from the power line. A processing subsystem is responsive to the voltage sensing circuitry and to the current sensor and is configured to compute power analysis metrics. | 05-08-2014 |
20140139236 | MEASURING METAL LINE SPACING IN SEMICONDUCTOR DEVICES - A test layout structure including a first series of parallel metal lines in a first level, and a first series of contact structures in a second level, the second level being positioned above the first level, the first series of contact structures being positioned at known increments, where the increments are in a direction perpendicular to a length of the first series of parallel metal lines, and where one or more of the first series of contact structures is in electrical contact with one or more of the first series of parallel metal lines. | 05-22-2014 |
20140176156 | Time Domain Network Analyzer - An apparatus for measuring s-parameters using as few as one pulser and two samplers is described. The apparatus calibrates itself automatically using the internal calibration standards. | 06-26-2014 |
20140191768 | METHOD AND SYSTEM FOR MEASURING THE RESISTANCE OF A RESISTIVE STRUCTURE - Method and system for measuring the resistance of a resistive structure having at least three nodes. A first calibration signal is determined by measuring a voltage at an output of the resistance structure when no calibration current is injected into a third node between the first and second nodes of the structure. A calibration current is then injected into the third node and a second calibration signal is determined. The absolute value of the difference between the first calibration signal and the second calibration signal is determined, the absolute value being proportional to a product of the resistance of the resistive structure and the calibration current. | 07-10-2014 |
20140239974 | NON-CONTACT ELECTRICAL MACHINE AIR GAP MEASUREMENT TOOL - A measuring kit for contactless measuring of the air gap distance between a frame mounted pole and core of a rotor includes a capacitance sensor which generates a signal proportional to the measured air gap, a panel meter in communication with the capacitance sensor which interprets the signal and displays the minimum air gap distance, an A/D converter also in communication with the capacitance sensor which converts the signal to a digitized signal, and a control panel which takes the digitized signal from the A/D converter, processes the digitized signal, and then displays the minimum air gap measurement. The control panel shows a graphic of the core and its surrounding poles to track the progress of the testing, and when the testing between the core and one of the surrounding poles is complete, the graphic of the pole tested visually darkens to indicate that portion of the test is complete. | 08-28-2014 |
20140239975 | METHOD FOR SEARCHING A CAPACITANCE VARIATION OF A CAPACITIVE SENSOR OF A MOTOR VEHICLE - Method of searching for a variation in capacitance of a capacitive sensor, includes a phase of searching for variation in capacitance and, when a capacitance variation has been detected, a phase of verifying the variation in capacitance. The search phase includes a recurrent step of searching for variation in capacitance including steps of measuring the duration of a first measurement sequence and determining, according to the measured duration, whether a first predefined detection criterion for variation in capacitance is verified. The verification phase includes steps of measuring the duration of a second measurement sequence and determining, according to the measured duration, whether a second predefined detection criterion for variation in capacitance is verified. The first measurement sequence has a reference duration less than that of the second measurement sequence, and the verification phase includes, when the second detection criterion is not verified, a step of updating the first detection criterion. | 08-28-2014 |
20140247058 | IMPEDANCE MEASUREMENT SYSTEM - Systems and methods for monitoring the condition of electrodes used in biological signal measurement are provided. One method includes applying a first test signal having a first frequency to at least one of a plurality of electrodes and applying a second test signal having a second frequency to at least one of the plurality of electrodes. Both frequencies are below a frequency range associated with the biological signal. The method further includes capturing the biological signal while applying the plurality of test signals and generating an output signal that includes both the measured biological signal and the plurality of test signals. The method further includes retrieving an output amplitude for each of the plurality of test signals from the output signal and calculating an estimated impedance for each of the plurality of electrodes based on the retrieved output amplitudes of the plurality of test signals. | 09-04-2014 |
20140266246 | MCU-BASED COMPENSATION AND CALIBRATION FOR MEMS DEVICES - A sensor system includes a microelectromechanical systems (MEMS) sensor, a processor, measurement circuitry, stimulus circuitry and memory. The MEMS sensor is configured to provide an output responsive to physical displacement within the MEMS sensor to the measurement circuitry. The stimulus circuitry is configured to provide a stimulus signal to the MEMS sensor to cause a physical displacement within the MEMS sensor. The measurement circuitry is configured to process the output from the MEMS sensor and provide it to the processor. The processor is configured to generate stimulus signals and provide them to the stimulus circuitry for provision to the MEMS sensor. The processor is configured to monitor the output from the measurement circuitry corresponding to the physical displacement occurring in the MEMS sensor, calculate MEMS sensor characteristics based on the output, and update calibration values based on the output. Methods for monitoring and calibrating MEMS sensors are also provided. | 09-18-2014 |
20140266247 | TEST PATTERN MEMBRANE AND METHOD FOR TESTING CAPACITIVE SENSORS - A test pattern membrane test method uses a test pattern membrane to test the capacitive sensors of a device. The device is placed in the test fixture. The capacitive sensors are read without the test pattern membrane, storing as a set of baseline measurements. The test pattern membrane is placed on the unit to be tested. The test pattern membrane has a plurality of conductive areas on a non-conductive substrate. The conductive areas are arranged in a pattern that corresponds to the pattern of capacitive sensors. The sensors are read again to obtain a set of stimulated measurements. Differences for each of the sensors are determined between the sensor readings with and without the test pattern membrane in place. This difference is compared to a threshold. A sensor is considered to be functioning properly if the difference value is greater than the sensor's threshold value. | 09-18-2014 |
20140292351 | Capacitive Sensor Device and Method for Calibrating a Capacitive Sensor Device - A capacitive sensor device for approach and/or contact detection has at least one generator electrode, at least one measurement electrode and at least one calibration electrode, wherein the at least one calibration electrode is arranged in a predefined distance adjacent to the at least one measurement electrode, wherein the at least one measurement electrode and the at least one calibration electrode are assigned to the generator electrode, wherein the at least one generator electrode may be loaded with a generator voltage and the at least one calibration electrode may be loaded with a calibrating voltage, and wherein the at least one calibration electrode at least may be operated in a first operating mode and a second operating mode, wherein in each of the operating modes the calibrating voltage lies between a ground voltage and the generator voltage, and the calibrating voltage is different in each operating mode. | 10-02-2014 |
20140292352 | IMAGE FORMING APPARATUS AND ABNORMALITY DETECTION APPARATUS AND METHOD FOR HUMIDITY SENSOR DEVICE - An image forming apparatus includes a humidity sensor element, a resistor, a clock supply section, a detection section and a determination section. The detection section detects a humidity on the basis of a divided voltage value obtained by the humidity sensor element and the resistor. The determination section acquires the divided voltage value at a first timing within a period from a rising edge to a falling edge of a first clock signal and at a second timing within a period from a falling edge to a rising edge of the first clock signal, and determines, on the basis of the divided voltage values thus acquired, whether or not the humidity detected by the detection section is normal. | 10-02-2014 |
20140306719 | CALIBRATION OF TEST INSTRUMENT OVER EXTENDED OPERATING RANGE - A method of calibrating a test instrument comprises determining a first response of a calibration device on the test instrument over a first set of operating ranges, determining a derived second response of the calibration device on the test instrument over a second set of operating ranges based on the first response, measuring the second response of the calibration device on the test instrument over the second set of operating ranges, and determining correction factors of the test instrument for the second set of operating ranges based on a comparison between the measured second response and the derived second response. | 10-16-2014 |
20140320150 | SHUNT RESISTOR BASED CURRENT SENSOR - A temperature sensor ( | 10-30-2014 |
20140347072 | Variable Resistor Arrangement, Measurement Bridge Circuit and Method for Calibrating a Measurement Bridge Circuit - A measurement bridge circuit includes a first branch and a second branch. The first branch contains a first resistor which is sensitive to measured variables and an invariable resistor connected in series. A first tap point is located between the first resistor and the invariable resistor. The second branch contains a second resistor which is sensitive to measured variables and a variable resistor arrangement connected in series. The variable resistor arrangement includes a first component having an invariable electrical resistance value and a second component having a variable electrical resistance value. The second component is connected in parallel with the first component in order to vary a total electrical resistance value for the variable resistor arrangement. A second tap point is located between the second resistor and the variable resistor arrangement. | 11-27-2014 |
20150028887 | MEASURING POWER CONSUMPTION OF CIRUIT COMPONENT OPERATING IN ULTRA-LOW POWER MODE - By powering an electronic component operating in an ultra-low power mode from a pre-charged measuring capacitor and measuring the time to discharge the capacitor to a trip voltage level, measurement data can be obtained. In some implementations, the capacitance of the capacitor can be obtained by adding a known current to the unknown current drawn from the capacitor and calculating the capacitance using a mathematical formula. | 01-29-2015 |
20150042357 | ELECTRONIC DEVICE, ELECTROSTATIC CAPACITANCE SENSOR AND TOUCH PANEL - When the excitation frequency of a touch panel and the frequency of external noise match or are close, noise cannot be removed by a bandpass filter. In addition, when a touch detection operating period is limited to a short period such as the no addressing period, the signal-to-noise ratio (S/N) decreases because frequency separation decreases and the noise removal effect by averaging is degraded. An electronic device of the present invention includes a sensor system ( | 02-12-2015 |
20150097576 | CALIBRATION ASSEMBLY FOR AIDE IN DETECTION OF ANALYTES WITH ELECTROMAGNETIC READ-WRITE HEADS - According to one embodiment, a calibration assembly includes an outer layer having at least one calibration trench extending along a y-axis, and an encapsulation layer within the calibration trench. The encapsulation layer has a plurality of nanoparticles spaced apart along said y-axis of said at least one calibration trench. Each of said plurality of nanoparticles are provided at known y-axis locations in said calibration trench, and each of the plurality of nanoparticles have a known magnetic property. | 04-09-2015 |
20150115977 | CURRENT-MODE COARSE-BASELINE-CORRECTION - The embodiments herein are generally directed to using a current-mode CBC circuit to maintain a voltage bias setting at a receiver when performing capacitive sensing. To do so, the CBC circuit may compensate for the change in voltage at a receiver by providing a current at the input of the receiver. Instead of using a passive CBC capacitor for each receiver, the input device may use a single CBC capacitor and a plurality of current mirrors to source and sink the current required to correct the input voltage at a plurality of receivers. As a result, the current-mode CBC circuit includes only one passive capacitor (or bank of capacitors) and a plurality of current mirrors which may provide space and cost benefits relative to a CBC circuit that uses a passive capacitor (or bank of capacitors) for each receiver channel. | 04-30-2015 |
20150115978 | CALIBRATION OF AN ANTENNA ARRAY - An antenna system including at least one antenna connected to a captured signal processing receiver, an antenna protection radome; and a plurality of electro-optical probes distributed on or inside of the radome. | 04-30-2015 |
20150130478 | Method For Adapting The Sensitivity Of A Sensor System - Provided is a method for adapting the sensitivity of a sensor system, in particular of a capacitive sensor system, which provides a sensor signal, wherein
| 05-14-2015 |
20150145526 | APPARATUS FOR CALIBRATING A POWER MEASURING SYSTEM FOR POWER TRANSFORMERS - The present invention relates to an apparatus for calibrating a power measuring system for power transformers. The general inventive concept involves the two reference measuring systems that are known from the prior art for the calibration of a current transformer, a voltage transformer and an evaluation device being integrated in a shared apparatus, according to the invention, for calibrating a power measuring system for power transformers, which apparatus is furthermore arranged on a container such that the apparatus can be moved by means of a trailer that holds the container for the purpose of in-situ calibration of the power measuring system of power transformers. | 05-28-2015 |
20150293158 | CONTACTLESS RESISTANCE MEASUREMENT - A resistance is measured without physical contact/connection to the resistance. A resistive element to be measured is provided, physically connected as part of a passive electrical circuit. Without physically contacting the resistive element, an electromagnetic field is used to produce an excitation in the passive electrical circuit. The resistance of the resistive element is determined based on an effect of the excitation on the electromagnetic field. | 10-15-2015 |
20150377941 | High Frequency Phase Reference Standard Signal - A pre-characterised high frequency signal ( | 12-31-2015 |
20160011291 | METHOD OF INTERFACING A LC SENSOR AND RELATED SYSTEM | 01-14-2016 |
20160054248 | Methods and Devices for Determining Sensing Device Usability - Methods and devices for determining sensing device usability, e.g., for self-monitoring and point of care devices. In one embodiment, the invention is to a method of determining device usability, comprising the steps of providing a device comprising a first electrical pad; a second electrical pad; and a humidity-responsive polymer layer contacting at least a portion of the first and second electrical pads; applying a potential across the first and second electrical pads; measuring an electrical property associated with the humidity-responsive polymer layer; and determining whether the measured electrical property associated with the humidity-responsive polymer layer has exceeded a humidity threshold level associated with the device usability. | 02-25-2016 |
20160054424 | APPLICATION OF ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY IN SENSOR SYSTEMS, DEVICES, AND RELATED METHODS - A diagnostic Electrochemical Impedance Spectroscopy (EIS) procedure is applied to measure values of impedance-related parameters for one or more sensing electrodes. The parameters may include real impedance, imaginary impedance, impedance magnitude, and/or phase angle. The measured values of the impedance-related parameters are then used in performing sensor diagnostics, calculating a highly-reliable fused sensor glucose value based on signals from a plurality of redundant sensing electrodes, calibrating sensors, detecting interferents within close proximity of one or more sensing electrodes, and testing surface area characteristics of electroplated electrodes. Advantageously, impedance-related parameters can be defined that are substantially glucose-independent over specific ranges of frequencies. An Application Specific Integrated Circuit (ASIC) enables implementation of the EIS-based diagnostics, fusion algorithms, and other processes based on measurement of EIS-based parameters. | 02-25-2016 |
20160061864 | Isolated Capacitance Line Voltage Sensor - Isolated capacitance line voltage sensing is provided that avoids metal-to-metal contact for voltage sensing of a power signal present on a power wire. An external conductor is positioned by the power wire, creating a capacitor with the power wire conductor, insulation, and external conductor. The capacitance is used to measure the electric field, indicating a voltage level for the powered wire. The impedance mismatch caused by the capacitance is transformed. The impedance transformation circuit may be integrated with the external conductor, allowing voltage sensing by a voltage meter having a lower input impedance. A manual or automatic calibration circuit may be provided to ensure the measured voltage represents the actual voltage on the power wire. | 03-03-2016 |
20160077030 | CONDUCTIVE LIQUID PROPERTY MEASUREMENT USING VARIABLE PHASE MIXING - A system and method for measuring an electrical characteristic of a fluid using a measuring circuit. In one implementation, the measuring circuit includes a sensing component, a current supply connected to the sensing component, a sensor switchably connected to the sensing component, an array of components switchably connected to the sensing component, and a monitoring circuit connected to the sensing component. A controller performs a calibration of the measuring circuit by switching parallel impedances in and out of the circuit while measuring voltages across the sensing component. The voltages are measured at at least two different phase angles that are determined by the calibration. Once voltages at different impedances and different phases are determined, the controller calculates a value of the electrical characteristic of the fluid by interpolating between lines of fixed capacitance or resistance. | 03-17-2016 |
20160097732 | ABNORMALITY DETERMINATION DEVICE OF FUEL PROPERTY SENSOR AND METHOD OF DETERMINING ABNORMALITY OF THE SAME - An abnormality determination device is applied to an electrostatic capacitance type fuel property sensor that has a sensing section that senses an electrostatic capacitance of a fuel to be detected. The abnormality determination device of the fuel property sensor acquires a first output that is an output when a predetermined voltage is applied to the sensing section and a second output that is an output when a voltage is not applied to the sensing section. The acquired first output and second output are compared and whether or not the fuel property sensor is abnormal is determined. | 04-07-2016 |
20160103197 | CORRECTION OF TRANSMISSION LINE INDUCED PHASE AND AMPLITUDE ERRORS IN REFLECTIVITY MEASUREMENTS - Various examples of methods and systems are disclosed for correction of phase and amplitude errors that occur in transmission lines connecting transmitter/receiver devices to measurement fixtures. In one example, a method is described that includes using time domain processing to determine a phase shift from the measurement fixture that can occur between calibration measurements and measurements of the specimen under test. In another example, a method is described that includes frequency-domain processing of the signals to obtain both phase and amplitude corrections. Including these phase and amplitude corrections in the calibration procedure can reduce or minimize the errors induced in the measurements when the transmission line(s) experience either temperature changes or physical deflections, among other things. | 04-14-2016 |
20160131710 | TEST SYSTEM FOR SEMICONDUCTOR APPARATUS AND TEST METHOD USING THE SAME - A test system for a semiconductor apparatus that includes a calibration board having first skew information therein and outputting a plurality of test signals, and a main board configured to perform first skew correction for correcting skews of the test signals based on the first skew information and perform secondary skew correction for correcting an I/O skew thereof using the plurality of test signals | 05-12-2016 |
20160145909 | METHOD OF CALIBRATING A STANDBY DURATION OF A PROXIMITY DETECTION SENSOR AND ASSOCIATED SENSOR - A method of calibrating a standby duration (D | 05-26-2016 |
20160169939 | SYSTEM AND METHOD FOR COIL SENSOR DESIGN, ALIGNMENT AND TUNING | 06-16-2016 |
20160178721 | METHOD FOR SELF CALIBRATION OF MEASUREMENT NONLINEARITY | 06-23-2016 |
20160178722 | METHOD FOR CHARACTERIZING MICROWAVE COMPONENTS | 06-23-2016 |
20160187402 | PLANAR TRANSMISSION-LINE PERMITTIVITY SENSOR AND CALIBRATION METHOD FOR THE CHARACTERIZATION OF LIQUIDS, POWDERS AND SEMISOLID MATERIALS - A low cost planar transmission line sensor and simple calibration method for measuring the complex permittivity of materials with minimal sample preparation over a wide band of radio- and microwave frequencies. The sensor is also used for measuring anisotropic dielectric properties of materials with a defined grain. | 06-30-2016 |
20160195598 | RESONANT INDUCTIVE SENSING WITH ALGORITHMIC CONTROL LOOP FOR TUNING NEGATIVE IMPEDANCE TO RESONATOR IMPEDANCE | 07-07-2016 |
20160252376 | Position Measurement System with Calibration Means | 09-01-2016 |
20160252600 | A MEASURING DEVICE AND A METHOD FOR MEASURING A HIGH-FREQUENCY SIGNAL WITH DEEMBEDDING | 09-01-2016 |
20160252601 | TESTER | 09-01-2016 |
20160252602 | TESTER | 09-01-2016 |
20170234959 | CALIBRATION APPARATUS AND METHOD FOR NETWORK ANALYZER | 08-17-2017 |
20190145927 | DUAL GATE BIOLOGICALLY SENSITIVE FIELD EFFECT TRANSISTOR | 05-16-2019 |
20190146050 | Self-Calibration of Source-Measure Unit via Capacitor | 05-16-2019 |