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Using capacitive type measurement

Subclass of:

324 - Electricity: measuring and testing

324600000 - IMPEDANCE, ADMITTANCE OR OTHER QUANTITIES REPRESENTATIVE OF ELECTRICAL STIMULUS/RESPONSE RELATIONSHIPS

324649000 - Lumped type parameters

Patent class list (only not empty are listed)

Deeper subclasses:

Class / Patent application numberDescriptionNumber of patent applications / Date published
324686000 With a capacitive sensing means 175
324663000 Where a material or object forms part of the dielectric being measured 128
324679000 With comparison or difference circuit 127
324661000 With variable distance between capacitor electrodes 69
324676000 With pulse signal processing circuit 43
324681000 With frequency signal response, change or processing circuit 34
324684000 With compensation means 23
324659000 With loss characteristic evaluation 15
324660000 With variable electrode area 12
324683000 With phase signal processing circuit 9
Entries
DocumentTitleDate
20110175629CAPACITANCE DISPLACEMENT AND ROTATION SENSOR - A position measuring sensor formed from opposing sets of capacitor plates measures both rotational displacement and lateral displacement from the changes in capacitances as overlapping areas of capacitors change. Capacitances are measured by a measuring circuit. The measured capacitances are provided to a calculating circuit that performs calculations to obtain angular and lateral displacement from the capacitances measured by the measuring circuit.07-21-2011
20100156440Anti-Pinch Sensor - The invention relates to an anti-pinch sensor (06-24-2010
20120161791METHODS AND APPARATUS FOR DETERMINING INPUT OBJECTS ASSOCIATED WITH PROXIMITY EVENTS - A system determines whether proximity events at different positions are produced by the same input object or by different input objects. One or more hover states (or proximity events with “non-contact” signatures) occurring near the two positions are used in making this determination. The proximity events are found to be produced by different input objects, for example, when the hover state occurs at approximately the first position within a first duration after a first time, or at approximately the second position within a second duration before the second time.06-28-2012
20120169356PROXIMITY DETECTION SYSTEM - Proximity sensing arrangements utilize one or more sensing devices to detect and/or to discern objects that are or become proximate, or are expected to be proximate to a position of interest. For example, one or more capacitive sensors may be distributed to locations about a machine, e.g., attached to, incorporated with, or otherwise associated with a moving or otherwise operating component of the machine. Corresponding control electronics drive each capacitive sensor, using a corresponding excitation signal, as well as process information read from each capacitive sensor to make intelligent proximity related decisions.07-05-2012
20130082719Sensor Patterns With Reduced Noise Coupling - A capacitive sense array configured to improve noise immunity in detecting a presence of a conductive object is described. In one embodiment, a capacitive sense array includes at least a first set of sense elements disposed in straight parallel lines along a first axis of the capacitive sense array. A second set of sense elements is disposed in crooked paths about a second axis of the capacitive sense array. The first and second sets form a capacitive sense array that includes crooked sense paths in at least one of the axes of the sense array.04-04-2013
20100045308METHOD FOR THE EARLY DETECTION OF DAMAGE TO A CAPACITIVE SENSOR, AND CAPACITIVE SENSOR FEATURING A DIAGNOSTIC FUNCTION - A system for the early detection of damage to and/or soiling of a capacitive sensor includes determining a degree by which the sensor is damaged and/or soiled by measuring a physical property of an electrode, e.g. the resistance of the electrode, or optically by means of the coefficient of reflection of the electrode surface of at least one electrode of the capacitive sensor. A capacitive sensor, according to the system described herein, may include components for provide the diagnostic function.02-25-2010
20130038338Parasitic Capacitive Canceling in a Sensor Interface - In one embodiment, a method includes communicating a first voltage to a drive line of a touch sensor; setting a sense line of the touch sensor to a predetermined voltage; and communicating a second voltage to the drive line. A resulting transition at the drive line from the first voltage to the second voltage causes an amount of charge accumulated on the sense line to be communicated to an integrator. The method also includes, at the integrator, integrating the amount of charge communicated from the sense line to convert the amount of charge to an output voltage. The method also includes restoring the sense line to the predetermined voltage.02-14-2013
20100321038MONITORING OF THE AGING OF THE CAPACITORS IN A CONVERTER BY MEANS OF CAPACITANCE MEASUREMENT - A method and a device for converting an electrical current include at least one phase module having an AC voltage connection and at least one DC voltage connection. A phase module branch is disposed between each DC voltage connection and the AC voltage connection. Each phase module branch includes a series circuit of submodules, each having a capacitor and at least one power semiconductor. The apparatus can establish aging of an energy storage device in a simple manner by using a capacitor diagnosis device for a time-dependent determination of the capacitance of each capacitor.12-23-2010
20130088244VARIABLE CAPACITANCE SENSORS AND METHODS OF MAKING THE SAME - A variable capacitance sensor includes a first conductive electrode comprising electrically interconnected first conductive sheets; a second conductive electrode comprising electrically interconnected second conductive sheets, wherein the first conductive sheets are at least partially interleaved with the second conductive sheets, and wherein the second conductive electrode is electrically insulated from the first conductive electrode; and microporous dielectric material at least partially disposed between and contacting the first conductive sheets and the second conductive sheets. A method of making a variable capacitance sensor by replacing ceramic in a ceramic capacitor with a microporous material is also disclosed.04-11-2013
20100271048POSITION DETECTOR - There is provided a multilayer made up of: a support member 10-28-2010
20080303535MULTI-PIN CV MEASUREMENT - A method for measuring electrical parameters of a DUT having at least three terminals includes applying a first AC voltage to a first terminal; separately driving a second and a third terminal each to a virtual second AC voltage, each virtual voltage requiring a respective current; and measuring an electrical parameter of the DUT based on the first AC voltage and the second and third terminals each being at the virtual second AC voltage.12-11-2008
20120223725Touch Sensitive Device And Fabrication Method Thereof - The present invention relates to a touch sensitive device comprising a substrate, a mask layer, at least one touch sensing assembly partially masked by the mask layer, and an insulator formed between the mask layer and the touch sensing assembly for insulating the mask layer and the touch sensing assembly; wherein the mask layer, the touch sensing assembly, and the insulator are integrally formed on the substrate.09-06-2012
20110018557CAPACITIVE SENSING PATTERN - A sensor electrode pattern configured to enable the detection of multiple input objects concurrently disposed in a sensing region of a mutual capacitance sensor comprising a plurality of first sensor electrodes oriented along a first axis, and a plurality of second sensor electrodes oriented along a second axis and configured to be capacitively coupled with the plurality of first sensor electrodes. At least one sensor electrode of the plurality of first sensor electrodes is disposed in a configuration forming multiple crossings with a line that is parallel to the second axis. At least two of the plurality of first sensor electrodes or at least two of the plurality of second sensor electrodes are interleaved with each other proximate to the sensing region of the mutual capacitance sensor. The pluralities of first sensor electrodes and second sensor electrodes either comprise transmitter sensor electrodes or receiver sensor electrodes.01-27-2011
20120235691Touch Sensing Device - A touch sensing device is provided. A shielding plate is provided for covering and shielding wires that route sensing electrodes to a flexible circuit board. Alternatively, a conductive layer of the circuit board is applied for shielding a plurality of contacts of the electrodes and wires. Wires that couple two same typed electrodes extend as a shielding plate for shielding contacts of another type of electrodes. An auxiliary electrode bordering outside the sensing electrodes can be provided to compensate fringe effects of the sensing electrodes.09-20-2012
20120268143CAPACITIVE SENSING PATTERN - A capacitive input device includes a plurality of receiver sensor electrodes oriented substantially parallel to a first axis proximate to a sensing region of the capacitive input device. The capacitive sensing device also includes a plurality of transmitter sensor electrodes oriented substantially parallel to a second axis proximate to the sensing region and configured to be capacitively coupled with the plurality of receiver sensor electrodes. The at least one receiver sensor electrode of the plurality of receiver sensor electrodes is disposed in a configuration forming multiple crossings with a line that is parallel to the second axis, the multiple crossings occurring proximate to the sensing region.10-25-2012
20120112770Signal Processing - An iterative method may comprise obtaining a current input signal value for a current iteration, comparing the current input signal value with an output signal value determined in a previous iteration, updating a counter value determined in the previous iteration based on the comparison such that the updated counter value replaces the previously determined counter value, determining a slew value based on the counter value, and adding the slew value to the previously determined output signal value to generate a new current output signal value. Different slew values may be added to the previous output signal to obtain a new output signal. The counter value is updated to reflect recent trends in the input signals. For example, if the input signal is on an upward trend, the counter value may be relatively high because it is incremented each time an input signal exceeds a previously determined output signal.05-10-2012
20110001491CAPACITANCE MEASUREMENT CIRCUIT AND METHOD - A capacitance measurement circuit and method are provided. A storage capacitor is pre-charged. Charge transfer is performed between an under-test capacitor and the storage capacitor. The storage capacitor is discharged and charged according to a relationship between a voltage of the storage capacitor and a reference voltage. The capacitance of the under-test capacitor is measured according to the voltage on the storage capacitor.01-06-2011
20130162269Current Sensing with Internal ADC Capacitor - External conditions, e.g., smoke, temperature, humidity, humidity, pressure, flow rate, etc., affects a sensor's characteristics, wherein the sensor provides a current output representative of its characteristics as affected by the external conditions. The current output of the sensor is coupled to a sample and hold capacitor for a precision time period thereby charging the sample and hold capacitor to a voltage proportional to current provided by the sensor over the precision time period. The voltage on the sample and hold capacitor is converted to a digital representation and a determination is made whether the external condition represents an alarm situation, e.g., smoke detected from a fire.06-27-2013
20110084709CAPACITIVE PROXIMITY DEVICE AND ELECTRONIC DEVICE COMPRISING THE CAPACITIVE PROXIMITY DEVICE - The invention relates to a capacitive proximity device (04-14-2011
20100039121LOW COST FINGERPRINT SENSOR SYSTEM - Low cost fingerprint system having a single chip solution includes a circuit board, a fingerprint sensor array fabricated onto a first surface of the circuit board, and an integrated circuit die for processing information received from the fingerprint sensor array is mounted directly to a second surface of the circuit board. The integrated circuit die may be electrically connected to the sensor by, for example, vias in the circuit board.02-18-2010
20110298479Capacitive coordinate input device, capacitive coordinate input method, and information device - Provided are a capacitive coordinate input device and a capacitive coordinate input method for detecting at high speed the position of an object, such as a human finger or a pen, by detecting a change in capacitance at each intersection of a plurality of electrodes arranged corresponding to two-dimensional coordinates. Tri-state driving is performed such that, immediately after a voltage of a transmitting electrode is changed, impedance of other transmitting electrodes having no voltage change is temporarily increased.12-08-2011
20110291674APPARATUS AND METHOD FOR ANALYZING THE STATE OF OIL-FILLED ELECTRICAL DEVICES - Provided is an apparatus for analyzing the state of oil-filled electrical devices. The apparatus simulates the state of an oil-filled electrical device in which copper wire wrapped in insulating paper is immersed in insulating oil. The apparatus for analyzing the state of oil-filled electrical devices includes a first paper-covered copper wire and a second paper-covered copper wire, which are adjacent to each other; a tank which holds the first and second paper-covered copper wires as well as insulating oil extracted from the oil-filled electrical device, thereby immersing the first and second paper-covered copper wires in the insulating oil; and a capacitance measurement unit which measures the capacitance between the first and second paper-covered copper wires. The first and second paper-covered copper wires includes copper wire and insulating paper wrapped therearound. The insulating paper wrapper around each copper wire includes the same material as the insulating paper in the oil-filled electrical device.12-01-2011
20120098551INPUT DEVICE AND METHOD OF PRODUCING INPUT APPARATUS - An input device includes a sensor member that detects input position information; and a protective member that protects the sensor member, wherein the protective member includes a window-shaped light-transmissive region transmitting light in the thickness direction, a transparent substrate having an input surface on a first surface, and a decorative layer disposed on a second first of the transparent substrate. The decorative layer is stacked on the transparent substrate so as to surround the light-transmissive region, and an inclined section is provided at the inner edge of the decorative layer; the transparent filler is stacked on the second surface of the transparent substrate to cover the light-transmissive region and the inclined section; and the sensor member and the protective member are bonded together with the adhesive layer disposed on the transparent filler and the decorative layer.04-26-2012
20100090711SYSTEM AND METHOD FOR TESTING AN ELECTROSTATIC CHUCK - The present invention provides a reliable, non-invasive, electrical test method for predicting satisfactory performance of electrostatic chucks (ESCs). In accordance with an aspect of the present invention, a parameter, e.g., impedance, of an ESC is measured over a frequency band to generate a parameter functions. This parameter function may be used to establish predetermined acceptable limits of the parameter within the frequency band.04-15-2010
20110062970Rotating Angle Detection Device Used Capacitive Change and Method Thereof - This invention can increase the resolving power of the rotating angle using the rate of capacity change between two objects. The objective is to provide a rotating angle detecting device using capacitive change that is small in size and costs low to manufacture. The method to reach the above objective is a rotating angle detection device with a stator with two fixed conductor plates; and a rotator with a rotating conductor plate that rotates relatively to the above stator, with every rotation overlapping and passing the above fixed conductor plates repeatedly with different area change.03-17-2011
20110062969SINGLE LAYER CAPACITIVE IMAGE SENSING - A capacitive imaging sensor device includes a sensor substrate. A first set of sensor electrodes is disposed on a first surface of the sensor substrate, substantially in parallel with a first axis, and with at least two of its sensor electrodes extending for different lengths along the first axis. A second set of sensor electrodes is disposed on the first surface, substantially in parallel with the first axis, and in a common single layer with the first set. A processing system is coupled with the first and second sets and configured for: measuring a first capacitive coupling between a first sensor electrode of the first set and a sensor electrode of the second set; measuring a second capacitive coupling between a second sensor electrode of the first set and the sensor electrode of the second set; and determining a capacitance image using the first and second measurements of capacitive coupling.03-17-2011
20100090712SENSOR DEVICE AND METHOD WITH AT SURFACE OBJECT SENSING AND AWAY FROM SURFACE OBJECT SENSING - Methods, systems and devices are described for determining positional information for objects using a sensing device. The various embodiments provide improved user interface functionality by facilitating user input with both objects that are at the surfaced and objects that are away from the surface. The sensor device includes a processing system and a sensor array of sensing electrodes adapted to capacitively sense objects in a sensing region. First, the processing system is configured to determine positional information for objects at the surface in a first portion of the sensing region. Secondly, the processing system is configured to determine positional information for objects that are away from the surface and in a second portion of the sensing region, where the first portion of the sensing region is between the surface and the second portion of the sensing region.04-15-2010
20100079153Touch Sensor System and Method - A touch sensor assembly may include a cover, an electrode film assembly, an adhesive layer, a printed circuit board (PCB) electrically connected to the electrode film and a back plate configured to be coupled to the cover with the PCB and the electrode film assembly disposed between the housing and the back plate. The electrode film assembly may include an electrode film formed from a conductive ink and may comprise a plurality of contacts corresponding to a plurality of touch areas. The electrode film assembly may optionally comprise capacitive circuitry configured to exhibit a capacitance response to contact with the touch areas. The adhesive layer may be configured to secure the electrode film assembly to the cover. The PCB may be substantially planar and the cover may include an inner surface having a curvature. The electrode film may be configured to substantially conform to the curvature when secured thereto.04-01-2010
20110199102CHEMICAL SENSORS AND METHODS FOR MAKING AND USING THE SAME - A van der Pauw (VDP) sensor comprising an electronic circuit electrically coupled to a surface, the surface comprising a type III-V material, and the electronic circuit measuring a sheet resistivity of the surface using a VDP technique. The VDP sensor may further comprise a macromolecule, such as a porphyrin, an oligonucleotide, a protein, a polymer or a combination thereof in contact with the surface. The VDP sensors may be arranged in an array of similar or different sensors. An electronic circuit electrically coupled to a type III-V material having a two-dimensional electron gas, such as InAs or InN, the electronic circuit measuring an electrical property of the type III-V material having a two-dimensional electron gas.08-18-2011
20090295410OPENING AND CLOSING APPARATUS AND METHOD FOR MANUFACTURING SENSOR SUPPORTING MEMBER - An opening and closing apparatus is disclosed. The opening and closing apparatus includes an opening and closing body, a capacitance sensor, and a sensor support member. The capacitance sensor has a conductive sensor electrode, and outputs a detection signal that corresponds to the capacitance between the sensor electrode and a conductive object located close to the sensor electrode. The sensor support member includes a guard electrode, a holding portion, an attaching portion, and a conductive reinforcing member. The reinforcing member is embedded in the main body. At least a part of the reinforcing member is embedded in the guard electrode such that the reinforcing member is integrated with the guard electrode.12-03-2009
20090289640INSULATION MEASUREMENT APPARATUS - An insulation measurement apparatus includes a path including a first resistor, a capacitor in a state electrically floated from a ground potential, and a second resistor coupled in series sequentially from a positive electrode side of a power supply to a negative electrode side of the power supply, a first switching element provided in a path from the positive electrode side of the power supply to the capacitor, a second switching element provided in a path from the capacitor to the negative electrode side of the power supply, a detection section which detects a charge voltage set to the capacitor and determines an insulation state of the power supply, and a voltage setting section which executes a power supply voltage measurement mode for controlling the first and second switching elements to charge the capacitor by a voltage of the power supply for a predetermined voltage applying time period for measuring the voltage of the power supply, and an insulation voltage measurement mode for charging a terminal of a positive electrode side or a negative electrode side of the capacitor via a resistor between the positive electrode or the negative electrode of the power supply and the ground potential for a predetermined voltage applying time period for measuring a voltage of the insulation resistor.11-26-2009
20090289639INSULATION MEASUREMENT METHOD AND INSULATION MEASUREMENT APPARATUS - An insulation measurement method in an insulation measurement apparatus of a flying capacitor type, includes a first power supply charge voltage measurement process of applying a voltage of a power supply to a flying capacitor for a first charge time period a first grounding resistor measuring voltage measurement process of applying the voltage of the power supply to the flying capacitor via an insulation resistor on one electrode side of the power supply, a second power supply charge voltage measurement process of applying the voltage of the power supply to the flying capacitor for a second charge time period, a second grounding resistor measuring voltage measurement process of applying the voltage of the power supply to the flying capacitor via an insulation resistor on the other electrode side of the power supply, and an insulation resistor conversion process of obtaining a value of the insulation resistor based on measurement results of the first and second charge voltage measurement processes and the first and second grounding resistor measuring voltage measurement processes and an insulation resistor conversion expression.11-26-2009
20090261845ENANTIOSELECTIVE CAPACITIVE SENSOR - The present invention relates to an enantioselective capacitive sensor, its manufacture and use and to devices comprising such sensors.10-22-2009
20110199103Fill Level Measuring Device - A fill level measuring device for capacitive fill level measurement and/or travel time fill level measurement of a fill substance in a container. The measuring device has a coaxial measuring probe, whose inner conductor is galvanically isolated from its shield conductor, and whose shield conductor lies electrically at a reference potential. The device additionally includes: a securement apparatus lying electrically at a reference potential and serving for securement of the measuring device on a container opening equipped with a counterpart of the securement apparatus; and a washer made of an electrically conductive material and clamped in measurement operation between the securement apparatus and the counterpart. The inner conductor is completely surrounded in measurement operation by an insulating layer and passes through the washer into the container. The device additionally includes an insulating body adjoining the insulating layer and coaxially surrounding the inner conductor. The insulating body has a washer-shaped section clamped between the securement apparatus and the washer. The shield conductor coaxially surrounds the inner conductor and is connected mechanically and in an electrically conducting manner with the washer. At least one electrical contact element is affixed in the washer outside of a region of such covered by the insulating body and on a spring element. Via the contact element and the washer, the shield conductor is connected in an electrically conducting manner to the securement apparatus.08-18-2011
20110267078Current Sensor Capacity Measuring System - A capacitance measuring circuit comprising an oscillator circuit, where a sensor capacitance forms a link of a plurality of series connected impedances and where a square wave voltage is impressed on the series connected impedances from a separate high speed, a low impedance source and the measurement of the charging current, into the series connected impedances, is performed by a separate high accuracy current sensing device, connected in series between the low impedance square wave source and the plurality of the series connected impedances.11-03-2011
20120293189NOVEL METHOD AND DEVICE FOR WHOLE-CELL BACTERIAL BIO-CAPACITOR CHIP FOR DETECTING CELLULAR STRESS INDUCED BY TOXIC CHEMICALS - The present invention is directed to methods and a bio-capacitor sensing device for the detection of toxic chemicals using bacteria. The sensing platform comprises gold interdigitated capacitor with a defined geometry, a layer of carboxy-CNTs immobilized with viable 11-22-2012
20120043974CIRCUIT AND METHOD FOR MONITORING A CAPACITIVE SIGNAL SOURCE - A circuit for monitoring capacitive signal sources, and particularly detecting changes in capacitance of a variable capacitor, comprises the capacitive signal source and a differential analogue to digital converter. A voltage source provides a DC voltage to a first terminal of the differential analogue to digital converter, and the capacitive signal source is connected to the other terminal of the differential analogue to digital converter. A feedback path low pass filters the output of the differential analogue to digital converter to derive a DC offset value and couples the DC offset value to the other terminal of the differential analogue to digital converter.02-23-2012
20090128165CAPACITANCE MEASURING APPARATUS FOR CAPACITOR - A measuring apparatus for measuring capacitance of a capacitor includes a microprocessor, a control circuit coupled to the capacitor, and an Analog-to-Digital (A/D) converting circuit. The control circuit receives a control signal from the microprocessor, and outputs an analog voltage signal of the capacitor, and the control circuit charges/discharges the capacitor according to the control signal. The A/D converting circuit receives the analog voltage signal from the control circuit, and outputs a digital voltage signal. The microprocessor receives the digital voltage signal from the A/D converting circuit, and calculates capacitance of the capacitor according to the digital voltage signal and charge/discharge time.05-21-2009
20110006787DYNAMIC QUANTITY DETECTING MEMBER AND DYNAMIC QUANTITY DETECTING APPARATUS - A dynamic quantity detecting member includes: a base substrate of which a part or the whole including a contact portion is deformed in accordance with pressing of a contact object and of which an original shape is recovered when the pressing of the contact object disappears; electrodes serving as displacement electrodes of which the plurality of electrodes are fixed to a surface or inside of the base substrate and of which at least one electrode is disposed in a deformable portion (which is a region deformable and displaceable during the deformation) of the base substrate; and wirings which are connected to the electrodes. During deformation, the displacement electrodes are deformed and displaced with the deformation and displacement of the deformable portion without separation from the base substrate and without damaging conductivity. The deformation and displacement of the deformable portion are detected as a variation in capacitance between the electrodes.01-13-2011
20120105079CAPACITANCE-TO-VOLTAGE INTERFACE CIRCUITS - A capacitance-to-voltage interface circuit is utilized to obtain a voltage corresponding to a detected capacitance differential, which may be associated with the operation of a capacitive sensing cell. The interface circuit includes a capacitive sensing cell, an operational amplifier adapted for selective coupling to the capacitive sensing cell, a feedback capacitor for the operational amplifier, a load capacitor for the operational amplifier, and a switching architecture associated with the capacitive sensing cell, the operational amplifier, the feedback capacitor, and the load capacitor. During use, the switching architecture reconfigures the capacitance-to-voltage interface circuit for operation in a plurality of different phases. The different operational phases enable the single operational amplifier to be used for both capacitance-to-voltage conversion and voltage amplification.05-03-2012
20090051370METHOD OF ADJUSTING MOVING POSITION OF TRANSFER ARM AND POSITION DETECTING JIG - In the present invention, a position detecting substrate having a capacitive sensor is supported on a transfer arm and transferred by the transfer arm and mounted on a mounting part. The capacitive sensor on the position detecting substrate then detects a position of a target object on the mounting part to detect a mounting position of the position detecting substrate on the mounting part. Based on the mounting position of the position detecting substrate, the moving position of the transfer arm when transferring a substrate is then adjusted.02-26-2009
20090051369SYSTEM AND METHOD FOR MEASURING ADHESION FORCES IN MEMS DEVICES - A MEMS test device comprises a flexible beam spaced apart from an optical stack. The MEMS test device includes a reflective layer and a partially reflective layer, such that a change in the position of the MEMS test device can be observed without the use of an external interferometer. The flexible beam may be cantilevered or fixed at each end. The flexible beam may include a shoe suspended from the side of the beam facing the optical stack, to provide a fixed contact area. An array of MEMS test devices may be used to determine compliance, or to calculate adhesion forces.02-26-2009
20120268142CAPACITIVE PANEL SCANNING WITH REDUCED NUMBER OF SENSING CIRCUITS - Embodiments described herein provide capacitive sensor devices and methods for operating capacitive sensor devices. A first number of electrodes on the capacitive sensor array is activated. A signal is received from each of the first number of electrodes with a second number of receiver circuits on a controller associated with the capacitive sensor array. The first number is greater than the second number. It is determined if an object is proximate the capacitive sensor array based on the signals received from the first number of electrodes.10-25-2012
20090243631Circuit for capacitance measurement and method therefor - A measurement method for capacitance includes the following steps. First, a voltage on at least one end of a to-be-measured capacitor is switched in response to a first set of clock signals such that a level of an integrated voltage is adjusted from a start voltage level to an end voltage level in a first integration period, wherein a capacitance of the to-be-measured capacitor is relevant to a difference between the end voltage level and the start voltage level. Next, the level of the integrated voltage is adjusted from the end voltage level to the start voltage level in a second integration period in response to a second set of clock signals. Then, the capacitance of the to-be-measured capacitor is obtained according to the first and second integration periods and a known characteristic parameter.10-01-2009
20100171515Occupant detection system - An occupant detection system is a part of a vehicle occupant protection system. The vehicle occupant protection system is enabled to be activated when the occupant detection system determines an ON state indicative of existence of an occupant on a seat. The vehicle occupant protection system is disabled to be activated when the occupant detection system determines an OFF state. The system includes a capacitive sensor which detects the occupant based on a capacitance around the seat. The system determines the ON state or the OFF state based on the detected value of the capacitive sensor and a predetermined threshold value. The system evaluates whether the determination result in the determination block is appropriate or not. Then, the system biases the threshold value to suppress a reversal determination from the determination result which is evaluated as appropriate.07-08-2010
20100188105CAPACITANCE-TO-VOLTAGE INTERFACE CIRCUIT, AND RELATED OPERATING METHODS - A capacitance-to-voltage interface circuit is utilized to obtain a voltage corresponding to a detected capacitance differential, which may be associated with the operation of a capacitive sensing cell. The interface circuit includes a capacitive sensing cell, an operational amplifier adapted for selective coupling to the capacitive sensing cell, a feedback capacitor for the operational amplifier, a load capacitor for the operational amplifier, and a switching architecture associated with the capacitive sensing cell, the operational amplifier, the feedback capacitor, and the load capacitor. During use, the switching architecture reconfigures the capacitance-to-voltage interface circuit for operation in a plurality of different phases. The different operational phases enable the single operational amplifier to be used for both capacitance-to-voltage conversion and voltage amplification.07-29-2010
20100001745RESONANCE TAG WITH TEMPERATURE SENSOR - A temperature-history sensor includes a resonance circuit composed of at least a capacitor and a coil. The temperature-history sensor has a display for indicating a predetermined set temperature of the temperature-history sensor. The capacitor has at least a thermofusion material between electrodes of the capacitor, and the melting point of the thermofusion material is in the region of the set temperature.01-07-2010
20110057669Capacitive Sensor - A capacitive sensor for a digital display device comprises: one or more proximity wires; a grounding wire; wherein the DDD having a system area and a frame area; wherein the frame area is positioned around the system area; wherein the grounding wire is disposed on the DDD and forms a first area; wherein a first proximity wire is disposed outside of the first area; and wherein the first proximity wire and the grounding wire defines a first detection area of the capacity sensor.03-10-2011
20100253368CAPACITOR INTERFACE CIRCUIT - A capacitor interface circuit is provided. A capacitor under test (CUT) is divided into a variable portion and an invariable portion, and the capacitance of an offset capacitor is designed to equal to or close to the fixed capacitance of the CUT. The offset capacitor is used to store the charges opposite to the invariable portion of the CUT for neutralizing the effect of the invariable portion of the CUT. Thereupon, the charge converter composed by the fully-differential amplifier and the feedback capacitors only responses for the variable portion of the CUT so as to increase the accuracy of the follow-up data processing.10-07-2010
20090322352APPARATUS FOR OBJECT INFORMATION DETECTION AND METHODS OF USING SAME - A system for determining information regarding at least one object, comprising: a sensor sensitive to capacitive coupling; at least one object adapted to create a capacitive coupling with the sensor when at least one signal is input to the sensor; a detector adapted to measure at least one output signal of said sensor associated with the at least one object, wherein the output signal associated with the at least one object is an object information code.12-31-2009
20090115428SINGLE PIN MULTI-STATE IDENTIFIER USING RC TIMING ELEMENT - In a circuit identifier, an electrical circuit includes an output node to output an electrical signal. A resistor device and a capacitor device, electrically in series with the resistor device, receive at least a portion of the electrical signal. A counter device determines a time for the capacitor device to reach a predetermined charge and assigns a value to the time for the capacitor device to reach the predetermined charge. A processor or other system reads the value assigned by the counter device and identifies the capacitor from a predetermined list of capacitors. The identification of the capacitor identifies a revision of the circuit.05-07-2009
20100295559DEVICE WITH PROXIMITY DETECTION CAPABILITY - The electrical equivalent of a relatively large area proximity detection capability is provided in a space limited electronic device (11-25-2010
20110128017PLASMA UNCONFINEMENT SENSOR AND METHODS THEREOF - An arrangement within a plasma reactor for detecting a plasma unconfinement event is provided. The arrangement includes a sensor, which is a capacitive-based sensor implemented within the plasma reactor. The sensor is implemented outside of a plasma confinement region and is configured to produce a transient current when the sensor is exposed to plasma associated with the plasma unconfinement event. The sensor has at least one electrically insulative layer oriented toward the plasma associated with the plasma unconfined event. The arrangement also includes a detection circuit, which is electrically connected to the sensor for converting the transient current into a transient voltage signal and for processing the transient voltage signal to ascertain whether the plasma unconfinement event exists.06-02-2011
20100321039METHOD AND APPARATUS TO SELECT A PARAMETER/MODE BASED ON A TIME MEASUREMENT - An example integrated control circuit includes a regulator, a first comparator, a second comparator, and a counter. The regulator is to charge, during a time period, a capacitor. The first comparator is to provide an output indicating when a voltage on the capacitor reaches a first threshold voltage. The second comparator is coupled to provide an output indicating when the voltage on the capacitor reaches a second threshold voltage. The counter is coupled to begin counting in response to the first threshold voltage being reached and is coupled to stop counting in response to the second threshold voltage being reached. The counter is coupled to provide an output representative of the capacitance value of the capacitor during the time period and the integrated control circuit receives a bias current at the terminal from the capacitor to provide power to operate the integrated control circuit after the time period has ended.12-23-2010
20110001492CIRCUIT FOR CAPACITIVE TOUCH APPLICATIONS - A circuit for capacitive touch applications comprising 01-06-2011
20110109327Sensor for capacitive detection of a mechanical deflection - A sensor for capacitive detection of a mechanical deflection includes a substrate having a first substrate electrode and a second substrate electrode; and a mass movable relative to the substrate. The mass is divided into: a first electrically separate region having a first ground electrode; and a second electrically separate region of the mass having a second ground electrode. At least one portion of the first ground electrode is situated in a first region between the first substrate electrode and the second substrate electrode, and forms a first differential capacitor. At least one portion of the second ground electrode is situated in a second region between the first substrate electrode and the second substrate electrode, and forms a second differential capacitor.05-12-2011
20110043225Non-Contact Biopotential Sensor - A capacitive sensor system including a sensing plate, an amplifier, and a switching circuit is described. The sensing plate is capacitively coupled to a body surface. A change in the electric potential on the body surface generates an electric field that induces change in the electric potential of the sensing plate. The sensing plate includes a sensing node positioned in the electric field for generating an input signal from the electric field. The sensing plate is not in contact with the body surface. The amplifier receives the input signal at the input port, amplifies the input signal and generates an output signal at the output port. The switching circuit is connected to the input port and a reference voltage. The switching circuit non-continuously closes a shunting path from the sensing node to the reference voltage to reset the voltage at the sensing node.02-24-2011
20110043224CAPACITIVE OIL QUALITY MONITORING SENSOR WITH FLUORINATED BARRIER COATING - Methods and devices for evaluating the quality of oils are disclosed. The methods and devices can provide an indication of the oil quality based on the Total Polar Content of the oil. The methods rely on a reusable capacitive sensing element that comprises a fluorinated barrier coating, as disclosed herein.02-24-2011
20110084708APPARATUS, DEVICES, SYSTEMS, KITS, AND METHODS OF MONITORING FOOD TREATING MEDIA - An apparatus, system, and method regarding the monitoring of a fluid parameter are disclosed. More particularly, it relates to apparatus, systems, and methods of efficiently and economically monitoring the quality of a fluid, such as food treating media. An improved portable testing device may be in the form of a cartridge that is usable with a separate testing apparatus used to measure a parameter of the fluid carried on the sensing device. Included is a system and method that include a portable handheld device having a sensing device and a filter for protecting the sensing device from the fluid to be tested.04-14-2011
20090322351Adaptive Capacitive Sensing - A capacitive sensing circuit may comprise an RC (resistive-capacitive) bridge circuit, with a switching signal simultaneously applied to a reference path, and a signal path comprising the capacitance to be detected. Small perturbations in the capacitance may be detected by mixing/correlating a difference signal representative of the difference between the reference path signal and the signal path signal, to the switching signal. The output of the mixer may be filtered to virtually eliminate all EMI signals. A narrowband approach may also allow filtering of unwanted signals, enabling operation in systems susceptible to high levels of noise. Frequency stepping of the switching signal may minimize inband signal interference, and allow operation in the presence of many signals that would otherwise result in failure of the sensing circuit. Pad calibration may be implemented to free the user from a need to characterize each button channel capacitance and tailor the operation for each channel.12-31-2009
20100060298CAPACITIVE ELECTROMAGNETIC FLOWMETER - The surface of a signal electrode is treated as substrate treatment. For example, an oxide film on the surface of the signal electrode is removed for roughing, and the roughened surface is used as a surface treated face. A coating of a fluororesin is provided on the surface treated face for lining or thermal welding to the lining material. A signal electrode is provided in the resin lining. Since the oxide film has been removed from the surface of the signal electrode for roughening, the adhesive force of the coating of the fluororesin is increased. The fluororesin coating and the resin lining melt each other, and, as a result, the fluororesin coating is strongly bonded to the resin lining, whereby the adhesion between the signal electrode and the resin lining can be increased without opening a hole in the signal electrode. A method may also be adopted in which a primer film is formed by substrate treatment on the surface of the signal electrode.03-11-2010
20100066389CHARACTERIZATION TECHNIQUE FOR DIELECTRIC PROPERTIES OF POLYMERS - A test structure for polymer characterization over a wide frequency range, temperature range and under an applied DC electric field is disclosed. A high resistivity silicon substrate is topped by an adhesion layer. A polymer thin-film is deposited on a patterned metal03-18-2010
20110248728ELECTRONIC DEVICE AND OPERATION DETECTION METHOD - An electronic device includes an input plane member that includes a plurality of first conductive layers that is elastically deformed when a pressing operation is received from a user, a base that includes a plurality of second conductive layers that comes in contact with the first conductive layer when the input plane member is deformed, a capacitance detection unit that detects capacitance between the plurality of first conductive layers and between the plurality of second conductive layers, a resistance value detection unit that detects a resistance value between the first conductive layer and the second conductive layer when the first conductive layer comes in contact with the second conductive layer, and a switch unit that controls electrical connection between the first conductive layer and the second conductive layer and either of the capacitance detection unit and the resistance value detection unit.10-13-2011
20120200306CAPACITANCE VOLTAGE CONVERSION CIRCUIT, INPUT APPARATUS USING THE SAME, ELECTRONIC INSTRUMENT, AND CAPACITANCE VOLTAGE CONVERSION METHOD - A capacitance voltage conversion circuit, which converts respective capacitances of a plurality of sensor capacitors into voltages, includes: a plurality of capacitance current conversion circuits disposed in respective correspondence with the sensor capacitors, each capacitance current conversion circuit configured to generate a detection current corresponding to a capacitance of a corresponding sensor capacitor; a current average circuit configured to average a plurality of detection currents, which are respectively generated by the capacitance current conversion circuits, to generate an average current; and a plurality of current voltage conversion circuits disposed in respective correspondence with the sensor capacitors, each current voltage conversion circuit configured to convert a difference current between a corresponding detection current and the average current into a voltage.08-09-2012
20110068808ADAPTOR COMPONENT FOR A MEASURING SYSTEM - The circuit arrangement according to the invention comprises a measuring apparatus that measures an electrical connection, and also one or more conductor patterns. The conductor pattern is connected to the measuring apparatus using an adaptor component, which fits the impedance produced by the conductor pattern to be suitable for the measuring apparatus.03-24-2011
20110050252AUTOMATIC CHARACTERIZATION OF AN ACTUATOR BASED ON CAPACITANCE MEASUREMENT - An apparatus and method for determining characterizing attributes of an actuator is provided. An actuator may be moved to a maximum capacitance position. At the maximum capacitance position, an initial measurement of the actuator capacitance is made. The actuator is moved a predetermined increment toward a first extreme position, and the actuator capacitance is again measured. If the capacitance changed by a threshold amount, the signal preceding the signal that caused the actuator to move is recorded as an approximate response curve end point, or the first extreme position. The actuator is again moved a predetermined increment toward a second extreme position. After each move, the capacitance is measured. If it is determined the capacitance did change by a threshold amount from the previously measured capacitance, the signal related to the previously measured capacitance is recorded as an approximate response curve end point, or the second extreme position.03-03-2011
20110175630ELECTRONIC TEXTILE AND METHOD FOR DETERMINING A FUNCTIONAL AREA OF AN ELECTRONIC TEXTILE - The invention relates to a method for determining a functional area of an electronic textile (07-21-2011
20090295409CAPACITIVE VOLTAGE DIVIDER TOUCH SENSOR - A system for measuring capacitance has a measurement circuit with a first reference capacitor connected to a first node and to a second node. Each of the nodes is connected to a unit operable to apply a reference voltage or ground to one of the nodes. Each node has a first pad connected to the first node and a unit operable to measure voltage between the first node and second node.12-03-2009
20090278554System for Detecting a Container or Contents of the Container - A system for detecting a container or contents of the container. The system includes a diffuser for retaining the container, where the container is configured to hold an active material therein and may include a wick extending therefrom. The system further includes a sensor positioned to detect, for example, the container retained in the diffuser and/or the contents of the container retained in the diffuser.11-12-2009
20110156724CAPACITANCE MEASUREMENT SYSTEMS AND METHODS - A first capacitor and a second capacitor are charged until voltage at the second capacitor settles to a settling voltage. While charging, the first capacitor is alternately switched between a current source and ground. When the settling voltage is reached, charging of the first capacitor is halted. The second capacitor continues to be charged until voltage at the second capacitor reaches a reference voltage. The amount of time it takes for the settling voltage to reach the reference voltage corresponds to a measure of capacitance on the first capacitor.06-30-2011
20110163764ANTI-ENTRAPMENT SYSTEM - An anti-entrapment system for preventing an object from being entrapped by a translating device such as a vehicle window includes a capacitance sensor and a controller. The sensor has a jacket with a cavity, a dielectric element within the cavity, and first and second electrical conductors. The conductors are within the cavity on opposite sides of the dielectric element such that the conductors are separated from one another by a separation distance. The capacitance of the sensor changes in response to an electrically conductive object moving in proximity to at least one of the conductors. The controller is configured to control a translating device as a function of the capacitance of the sensor. The jacket is attachable to a seal configured to receive the translating device.07-07-2011
20110163763ELECTRICAL CAPACITANCE SENSOR - Disclosed is an electrical capacitance sensor comprising: a board 07-07-2011
20080204046Capacitance Measurement Apparatus and Method - A time period of an event is determined by charging a known value capacitor from a constant current source during the event. The resultant voltage on the capacitor is proportional to the event time period and may be calculated from the resultant voltage and known capacitance value. Capacitance is measured by charging a capacitor from a constant current source during a known time period. The resultant voltage on the capacitor is proportional to the capacitance thereof and may be calculated from the resultant voltage and known time period. A long time period event may be measured by charging a first capacitor at the start of the event and a second capacitor at the end of the event, while counting clock times therebetween. Delay of an event is done by charging voltages on first and second capacitors at beginning and end of event, while comparing voltages thereon with a reference voltage.08-28-2008
20100117660CABLE FOR A CAPACITIVE PROXIMITY SENSOR - A capacitive proximity sensor assembly comprises: (i) a capacitive proximity sensor (05-13-2010
20110133756APPARATUS FOR CAPACITIVELY MEASURING CHANGES - An apparatus for capacitively measuring changes has a sensor (S) with a sensor-active region. The sensor has at least one transmitting electrode, which generates an electric field, and a further electrode (06-09-2011
20100060297ELECTRODE ARRANGEMENT FOR GENERATING A SIGNAL INDICATIVE FOR THE PRESENCE OF AN OBJECT WITHIN AN OBSERVATION REGION - The invention relates to an electrode arrangement for achieving the detection of the presence, position, and/or the intrusion of an object, particularly of human limbs in an observation region. The aim of the invention is to provide solutions that are advantageous over prior solutions when detecting an object, especially a living body that is approaching a detection system. Said aim is solved, according to the invention, by an electrode arrangement for detecting the presence of an object within an observation region, with an electrode device for emitting an alternating field into an emission range, an electronic circuit for applying an alternating voltage to the electrode device, a connecting line for connecting the electrode device to the electronic circuit, and a device for shielding the connecting line. Said electrode arrangement is characterized in that an electrode-testing device is provided for generating a signal indicating the continuity of the electrode device.03-11-2010
20110148435TRANSCAPACITIVE SENSOR DEVICES WITH OHMIC SEAMS - A transcapacitive sensing device has and ohmic seam which sections a plurality of transmitter electrodes and also sections a plurality of receiver electrodes. A processing system is communicatively coupled with the transmitter electrodes and the receiver electrodes and configured to: transmit a first transmitter signal with a first transmitter electrode disposed on a first side of the ohmic seam; transmit a second transmitter signal with a second transmitter electrode disposed on a second side of the ohmic seam; receive a first response corresponding to said first transmitter signal with a first receiver electrode disposed on the first side of the ohmic seam; and receive a second response corresponding to said second transmitter signal with a second receiver electrode disposed on the second side of the ohmic seam.06-23-2011
20100213952Methods and Apparatuses for Determining Charging Current in Electrical Power Systems - A method and apparatus are disclosed for determining a system charging current in an electrical power system having three phases, a ground, a neutral, and a neutral resistor electrically coupling the neutral to the ground. The method comprises: measuring a line voltage of each phase; measuring a line-to-neutral voltage of each phase; determining a charging capacitance of each phase based on the line voltage of each phase, the line-to-neutral voltage of each phase, a frequency of the electrical power system, and a value of the neutral resistor; determining a phase charging current for each phase of the electrical power system based on the charging capacitance of each phase, the line voltage of each phase, and the frequency of the electrical power system; and determining the system charging current based on the phase charging current for each phase.08-26-2010
20100052700CAPACITIVE SENSOR - A shield electrode is provided in parallel with a sensor electrode. A detecting circuit detects a capacitance formed thereby around the sensor electrode. A capacitance-voltage conversion circuit converts the capacitance into a voltage by repeating a predetermined sequence. A shield electrode drive unit switches an electric state of the shield electrode in synchronization with the predetermined sequence. The shield electrode drive unit switches an electric state of the shield electrode in accordance with an electric state of the sensor electrode.03-04-2010
20100176819DEVICE FOR THE CAPACITIVE MEASUREMENT OF THE QUALITY AND/OR DETERIORATION OF A FLUID, INCLUDING A CAPACITIVE SENSOR THAT IS MECHANICALLY UNCOUPLED FROM THE ELEMENT IN WHICH IT IS ENCAPSULATED - The invention concerns a device for the capacitive measurement of the quality and/or deterioration of a fluid, comprising a sensor encapsulated in a perforated case, wherein the sensor is connected to the encapsulation so as to be mechanically uncoupled therefrom.07-15-2010
20090167324ELECTRIC POTENTIAL SENSOR - The invention provides an electric potential sensor, comprising at least one detection electrode arranged for capacitive coupling with a sample under test and for generating a measurement signal, and a sensor amplifier adapted to receive the measurement signal as input and to supply an amplified detection signal as output. Input impedance enhancing means provide a high input impedance to the sensor amplifier for increasing the sensitivity of the electrode to reduced electric potentials, and feedback means apply a coherent feedback signal to the input of the sensor amplifier for enhancing the signal to noise ratio of the sensor.07-02-2009
20110050253METHOD AND DEVICE FOR EVALUATING ELECTRIC PERFORMANCES OF AN FDSOI TRANSISTOR - A method for evaluating the electric performances of an FDSOI transistor, including the steps of: 03-03-2011
20110050251Capacitive sensor and actuator - A capacitive sensor and a capacitive actuator having at least one seismic mass deflectably mounted on a substrate. A comb electrode having comb fingers is mounted on the seismic mass, and a comb electrode having comb fingers is mounted on the substrate in such a way that the comb fingers are situated parallel to a deflection direction of the seismic mass and interlock in a comb-like manner. The characteristic curve of the sensor or actuator is adjusted by optimizing the geometry of at least one comb electrode, in particular of at least one comb finger.03-03-2011
20100097076MONITORING SYSTEM IN REAL TIME OF THE STATE OF CAPACITANCE GRADED BUSHINGS OF POWER TRANSFORMERS, POWER REACTORS, CURRENT TRANSFORMERS, CIRCUIT BREAKERS AND SIMILAR - Monitoring system in real time of the state of capacitance graded bushings of power transformers, powers reactors, current transformers, circuit breakers and similar, it is applied preferentially by power transformers; power reactors; chain transformers, circuit breakers and similar, being the system passible of accomplish the monitoring in real time of capacitance graded bushings (04-22-2010
20120043973CAPACITANCE TO CODE CONVERTER WITH SIGMA-DELTA MODULATOR - An apparatus and method of converting a capacitance measured on a sensor element to a digital value. The apparatus may include a switching capacitor as a sensor element, a modulation circuit coupled to the sensor element, and a switching circuit having a plurality of switches controlled by a variable-period clock. The modulation circuit is configured to measure a capacitance on the sense element and to convert the measured capacitance to a digital value.02-23-2012
20120043972METHOD AND CIRCUIT FOR REDUCING NOISE IN A CAPACITIVE SENSING DEVICE - A capacitive sensing circuit is provided. The capacitive sensing circuit includes a first capacitor and a charge-to-voltage converter circuit coupled to the first capacitor. The charge-to-voltage converter circuit includes a first current source that provides a first current to the first capacitor to charge the first capacitor and generate a time-varying voltage. The capacitive sensing circuit also includes a voltage-to-charge converter circuit coupled to the charge-to-voltage converter circuit, wherein the voltage-to-charge converter circuit samples the time-varying voltage and converts the time-varying voltage into a sampled charge at a predetermined sampling frequency. The capacitive sensing circuit further includes an integrator circuit coupled to the voltage-to-charge circuit, wherein the integrator circuit receives the sampled charge and integrates the sampled charge.02-23-2012
20120043971METHODS AND CIRCUITS FOR MEASURING MUTUAL AND SELF CAPACITANCE - A capacitance measurement circuit for measuring self and mutual capacitances may include a first electrode capacitively coupled with a second electrode, a first plurality of switches coupled with the first electrode, and a second plurality of switches coupled with the second electrode, wherein, during a first operation stage, the first plurality of switches is configured to apply a first initial voltage to the first electrode and the second plurality of switches is configured to apply a second initial voltage to the second electrode, and wherein, during a second operation stage, the first plurality of switches is configured to connect the first electrode with a measurement circuit, and the second plurality of switches is configured to connect the second electrode with a constant voltage.02-23-2012
20120001645COMBINED ELECTRICAL VARIABLE DETECTION DEVICE - A combined electrical variable detection device comprises a plurality of single-phase current measuring modules (01-05-2012
20120007614Method and Device for Position Detection with Palm Rejection - The method and the device for position detection with palm rejection are disclosed. The invention provides a sensor and a controller for controlling the sensor. The sensor includes a plurality of strips. The controller execute a first kind of position detection and a second kind of position detection on the sensor. The first kind of position detection identifies an ignored zone, and the second kind of position detection executes the position detection outside the ignored zone.01-12-2012
20120062244READOUT SYSTEM FOR MEMS-BASED CAPACITIVE ACCELEROMETERS AND STRAIN SENSORS, AND METHOD FOR READING - A method and an electronic readout circuit for measuring a capacitance of a MEMS sensor are disclosed. In one aspect, the readout circuit includes: an input stage for receiving a first signal from the sensor and for presenting a second signal; a charge amplifier stage for amplifying and integrating the second signal; and a control logic for controlling the readout circuit according to a predefined timing relation synchronized to actuation voltages applied to the sensor for generating the first signal. The readout circuit may further includes a first switching unit for applying a first reference voltage to the sensor and a second switching unit for applying the second signal to the charge amplifier stage, wherein the first and the second switching units are controlled according to the predefined timing relation such that a plurality of the second signals are accumulated.03-15-2012
20120153970CAPACITIVE TOUCH SENSING DEVICES AND METHODS OF MANUFACTURING THEREOF - The present disclosure provides systems, methods, and apparatus for sensing the location(s) of conductive objects disposed near a sensor array. In one aspect, a sensor array includes a conductive row and a conductive column formed of non-transparent material(s). At least a portion of the conductive row overlaps at least a portion of the conductive column and each of the conductive rows and columns include sensing elements. The sensing elements at least partially define volumes including non-conductive and optically transparent material(s) to limit the loss of light that passes therethrough.06-21-2012
20120153971SYSTEM AND METHOD FOR TESTING AN ELECTROSTATIC CHUCK - The present invention provides a reliable, non-invasive, electrical test method for predicting satisfactory performance of electrostatic chucks (ESCs). In accordance with an aspect of the present invention, a parameter, e.g., impedance, of an ESC is measured over a frequency band to generate a parameter functions. This parameter function may be used to establish predetermined acceptable limits of the parameter within the frequency band.06-21-2012
20120161792ELECTRONIC DEVICE, AND CAPACITOR CAPACITANCE DETECTION METHOD APPLIED TO THE SAME - According to one embodiment, an electronic device includes a capacitor, a power supply device, a discharger and a capacitance detector. The capacitor is used as a backup power supply. The power supply device charges the capacitor. The discharger discharges the capacitor. The capacitance detector maintains a terminal voltage of the capacitor at a given level for a predetermined time, by controlling an operating time of the power supply device. The capacitance detector allows the discharger to start the discharge the predetermined time later. The capacitance detector detects a capacitance of the capacitor based on a transient response characteristic of the discharge.06-28-2012
20100289504PROCESS FOR MEASURING BOND-LINE THICKNESS - A process for measuring the thickness of an insulating material. The process includes providing a device used to measure capacitance, and electrically connecting the capacitance measuring device to a heat sink and an electrical, heat-generating component. The thickness of the insulating material is determined by measuring the capacitance of the insulating material according to the formula;11-18-2010
20100289503EXTENDED PROXIMITY SENSOR DEVICE WITH ELECTROSTATIC DISCHARGE PROTECTION - An input device is provided with improved electrostatic discharge protection. Specifically, the input device includes a plurality of capacitive sensing electrodes configured for object detection. An electrostatic discharge (ESD) shunt is disposed near the capacitive sensing electrodes and configured to provide ESD protection to the capacitive sensing electrodes. The input device also includes an extended-proximity capacitive sensing electrode configured to for object detection of relatively distant objects. The ESD shunt has an associated first resistance, and the extended-proximity capacitive sensing electrode has an associated second resistance. The second resistance is greater than the first resistance such that an electrostatic discharge at a first exposed location would be attracted to the ESD shunt via a first potential discharge path instead of being attracted to the extended-proximity capacitive sensing electrode via a second potential discharge path, where the first discharge path is longer than the second discharge path.11-18-2010
20120161793CAPACITIVE OCCUPANT DETECTION APPARATUS - A capacitive occupant detection apparatus comprising a sensor unit and a control unit is disclosed. The sensor unit includes a detection electrode and a periphery guard electrode. The control unit includes: a signal application circuit for applying an oscillation signal to the detection electrode; an operational amplifier for applying to the guard electrode a signal having the same phase and potential as the oscillation signal applied to the detection electrode; and a control circuit for receiving current and voltage values supplied to the detection and for determining a mounting state on a seat based on the inputted current and voltage values (including phase information). The periphery guard electrode is located to surround the detection electrode when viewed from an upper side of the detection electrode.06-28-2012
20120126834Sensor Element Device and Method for Producing a Molded Body of a Sensor Element Device - A sensor element device for a capacitive contact switch for an operator control device with an operator panel has a molded body of an electrically nonconducting material. The molded body has an upper side that lies against an underside of the control panel in the assembled state. The molded body is transparently formed in certain portions in a direction perpendicular to its upper side as an illuminated indicator and is provided on its upper side with an electrically conductive coating. The electrically conductive coating serves as a capacitive sensor element of the capacitive contact switch and has at least one recess, which has been produced by means of a laser, to form a symbol.05-24-2012
20100207644ANALOG COMPUTATION - Some general aspects of the invention relate to a circuit and to a method for analog computation, for example, using switched capacitor integrated circuits. In some examples, a circuit includes a first group of capacitors and a second group of capacitors that may store charges during circuit operation. The first and/or the second group of capacitors may include multiple disjoint subsets of capacitors. An input circuit is provided for receiving a set of input signals and for inducing a charge on each of some or all capacitors in the first group of capacitors according to a corresponding input signal. Switches, for example, transistors controlled by a sequence of clock signals, are used to couple different sets of capacitors. Different configurations of the switches are used to form different sets of the capacitors among which charge can redistribute.08-19-2010
20120161790NOx SENSING MATERIALS AND SENSORS INCORPORATING SAID MATERIALS - Gas-sensitive materials are disclosed which are mixtures or composites of BaSnO06-28-2012
20120249167METHOD FOR OBTAINING INFORMATION ENABLING THE DETERMINATION OF A CHARACTERISTIC OF A POWER SOURCE - An apparatus for obtaining information enabling a characteristic like determination of maximum power point of a power source, the apparatus including at least an inductor and a capacitor, the information enabling the determination of the characteristic of the power source being obtained by monitoring the voltage charge of the capacitor, and a mechanism discharging the capacitor through the inductor prior to the monitoring of the charge of the capacitor.10-04-2012
20120223726MEMS Sensor with Movable Z-Axis Sensing Element - A MEMS sensor includes a substrate and a MEMS structure coupled to the substrate. The MEMS structure has a mass movable with respect to the substrate. The MEMS sensor also includes a reference structure electrically coupled to the mass of the MEMS sensor. The reference structure is used to provide a reference to offset any environmental changes that may affect the MEMS sensor in order to increase the accuracy of its measurement.09-06-2012
20120169355SENSOR STRIP FOR OBSTACLE DETECTION AND CONNECTING STRUCTURE THEREOF - Provided is a sensor strip for detecting an obstacle using a change in electrostatic capacitor, comprising: a sensor body which is formed with a reference surface coupled to an object; and a plate type strip electrode of which a center portion is closer to the reference surface than a peripheral portion thereof with respect to a transverse direction.07-05-2012
20120176146NONCONTACT DETERMINATION OF INTERFACE TRAP DENSITY FOR SEMICONDUCTOR-DIELECTRIC INTERFACE STRUCTURES - Embodiments of the subject method and apparatus relate to a sequence of noncontact Corona-Kelvin Metrology that allows the determination and monitoring of interface properties in dielectric/wide band gap semiconductor structures. The technique involves the incremental application of precise and measured quantities of corona charge, Q07-12-2012
20120074961CAPACITIVE SENSOR WITH ACTIVE SHIELD ELECTRODE - A capacitive sensor having an active shield electrode driven by a unity gain amplifier. Various arrangements using multiplexors or switch arrays may allow single shield with multiple sense electrodes.03-29-2012
20120074960ENERGY STORAGE SYSTEM ENERGY CAPACITY AND CAPABILITY MONITOR - A method and device for reporting the characteristics of an energy storage system. The method comprises acquiring the open circuit voltage. The method also comprises providing a coulomb capability and a coulomb capacity of the energy storage system based on the open circuit voltage, and determining at least one of an energy capability or an energy capacity of the energy storage system based on at least one of the coulomb capacity, coulomb capability, or combinations thereof.03-29-2012
20100271047METHODS AND SYSTEMS FOR DETECTING THE PRESENCE, OR DETERMINING THE LOCATION OR THE SIZE, OR DETECTING CHANGES OF MATERIAL PROPERTIES, OF AN OBJECT WITHIN A PREDEFINED SPACE - A method for detecting the presence, and/or determining the location, and/or detecting changes in the material properties, of a first object (10-28-2010
20100007359PASSIVE CAPACITIVELY-COUPLED ELECTROSTATIC (CCE) PROBE ARRANGEMENT FOR DETECTING IN-SITU ARCING EVENTS IN A PLASMA PROCESSING CHAMBER - An arrangement for detecting in-situ arcing events within a processing chamber of a plasma processing system during substrate processing is provided. The arrangement includes a probe arrangement, which is disposed on a surface of the processing chamber and is configured to measure at least one plasma processing parameter. The probe arrangement includes a plasma-facing sensor and a measuring capacitor, wherein the plasma-facing sensor is coupled to a first plate of the measuring capacitor. The probe arrangement also includes a detection arrangement that is coupled to a second plate of the measuring capacitor, wherein the detection arrangement is configured for converting an induced current flowing through the measuring capacitor into a set of digital signals, which is processed to detect the in-situ arcing events.01-14-2010
20120256642SINGLE LAYER TOUCH SENSOR - Embodiments described herein provide capacitance sensing devices and methods for forming such devices. The capacitance sensing devices include a substrate having a central and an outer portion. A plurality of substantially co-planar electrodes are on the central portion substrate. A first plurality of conductors are on the substrate. Each of the first plurality of conductors has a first end portion electrically connected to one of the plurality of electrodes and a second end portion on the outer portion of the substrate. An insulating material is coupled to the second end portions of the first plurality of conductors. A second plurality of conductors are coupled to the insulating material. Each of the second plurality of conductors is electrically connected to the second end portion of at least some of the first plurality of conductors and is insulated from the second end portion of the others of the first plurality of conductors.10-11-2012
20120187962CONTROL DEVICE AND METHOD FOR TRIGGERING PERSON PROTECTING DEVICE - In method and a control device for triggering person protection device, a signal of a planarly measuring environment sensor system and a second signal of a contact sensor system are evaluated separately in order to produce a respective trigger signal. These two trigger signals are then gated in order to produce a third trigger signal. A trigger circuit triggers the person protection device as a function of this third trigger signal.07-26-2012
20120262191EXTENSION SENSOR AND METHOD FOR MEASURING AN EXTENSION OF A TEXTILE - The invention relates to an extension sensor, in particular for measuring an extension of a textile, comprising at least one yarn, which has an extensibility and wherein the yarn comprises at least two electrically conductive layers that extend along a longitudinal direction of the yarn, wherein the electrically conductive layers are spatially separated and insulated from each other.10-18-2012
20120229148PROJECTED CAPACITIVE TOUCH PANEL HAVING A RESISTANCE FINE-TUNING STRUCTURE - A projected capacitive touch panel having a resistance fine-tuning structure has an X-axis sensing layer and a Y-axis sensing layer. The X-axis sensing layer and the Y-axis sensing layer respectively have multiple X-axis electrode arrays and multiple Y-axis electrode arrays. Each X-axis electrode array or each Y-axis electrode array is composed of multiple electrodes and multiple connection portions. Each connection portion is connected between adjacent two of the electrodes of one of the X-axis or Y-axis electrode arrays. By varying widths and adjusting resistance of the connection portions of the X-axis electrode arrays and the Y-axis electrode arrays, the touch sensitivity of the touch panel can be enhanced and the size of the touch panel can be enlarged.09-13-2012
20120229150INPUT APPARATUS AND ELECTRONIC EQUIPMENT USING CAPACITIVE SENSING METHOD IN DETECTING OPERATIONS - An input apparatus capable of improving detection sensitivity in detecting operations using a capacitive sensing method. An operation member is operated to change the positional relationship between a substrate and a conducive member. In the conductive member, a first part whose facing area facing an earth electrode of the substrate does not change even when the positional relationship between the substrate and the conducive member changes, and second parts whore facing area facing detecting electrodes of the substrate changes in response to a change in the positional relationship between the substrate and the conducive member are formed. The substrate or the conducive member is formed so that when the facing area of the second parts facing the detecting electrodes reaches the maximum, the facing area of the second parts facing the detecting electrodes can be equal to the facing area of the first part facing the earth electrode.09-13-2012
20120229149METHOD FOR DETERMINING LOAD CAPACITANCE OF AN OSCILLATOR CIRCUIT, OSCILLATOR CIRCUIT AND ELECTRONIC APPARATUS - It is an object of the present invention to provide a method for determining the load capacitance CL of an oscillator circuit having a low load capacitance. To attain the object, we provide a method for determining the load capacitance CL of an oscillator circuit, wherein, when a drive current and a load capacitance of the oscillator circuit with a negative resistance RL09-13-2012
20110121841Apparatus and method for predetermined component placement to a target platform - The present invention relates generally to assembly techniques. According to the present invention, the alignment and probing techniques to improve the accuracy of component placement in assembly are described. More particularly, the invention includes methods and structures to detect and improve the component placement accuracy on a target platform by incorporating alignment marks on component and reference marks on target platform under various probing techniques. A set of sensors grouped in any array to form a multiple-sensor probe can detect the deviation of displaced components in assembly.05-26-2011
20100327881Control unit, sensing device for a capacitive touch panel and method therefor - A noise reducing device for a capacitive touch panel and a method of reducing noise for a capacitive touch panel are disclosed to solve problems related to noise generated by a conventional filter circuit and an integrating circuit or external noise. In the invention, at least one switch circuit is used so that the conventional filter circuit and integrating circuit used in the prior are omitted. Signals output from a current measurement circuit are transmitting to a control unit to calculate the location of a touch point, reducing any noise.12-30-2010
20120319705HYBRID THREE-DIMENSIONAL SENSOR ARRAY, IN PARTICULAR FOR MEASURING ELECTROGENIC CELL ASSEMBLIES, AND THE MEASURING ASSEMBLY - The invention relates to a hybrid three-dimensional sensor array, in particular for measuring biological cell assemblies. The sensor array has a plurality of microstructured sensor plates, each having one carrier section on which a plurality of sensor needles are arranged in a comb-like manner, which carry a plurality of electrode surfaces. Furthermore, a plurality of spacer elements are provided, which are fastened between the sensor plates so that both the carrier sections and the sensor needles of adjacent sensor plates are at a distance from each other. The invention further relates to a measuring assembly for measuring electrical activities of biological cell assemblies using such a sensor array.12-20-2012
20120319704STACKED SENSOR FOR TESTING A POROUS MEDIUM - A sensor is provided for testing a porous medium. The sensor includes a plurality of porous elements, a number of electrically conductive interface plates which is one greater than the quantity of elements, and the same number of conductors. Each element operates as a discrete variable capacitor, exhibits a different known liquid release curve, and includes a first axial opening. The elements are stacked one on top of another. Each plate includes a second axial opening. The plates are axially distributed within the sensor such that the first and second axial openings combine to form a longitudinal cavity that extends from the sensor's proximal end to its distal end, and each element is sandwiched between a different pair of plates. A distal end of each conductor is attached to a different one of the plates, and a proximal end is routed through the cavity to the sensor's proximal end.12-20-2012
20100225333EXCITATION PHASE DETECTING CAPACITANCE-TYPE POSITION TRANSDUCER - An excitation phase detecting capacitance-type position transducer comprises a stationary part having a plurality of excitation electrode groups and a movable part having a plurality of coupling electrodes. The capacitance-type position transducer detects a signal of which phase varies according to the relative positions of the movable part with respect to the stationary par and calculates an intra-period phase angle φ from two excitation signals having a phase difference of 90° captured at a zero-cross point of the detection signal.09-09-2010
20120280698CAPACITANCE-TYPE PROXIMITY SENSOR DEVICE AND ELECTRONIC APPARATUS USING THE SAME - A capacitance-type proximity sensor device includes internal electrodes that are arranged such that capacitance is formed therebetween, external electrodes that are arranged in the outer circumference of the internal electrodes, a driving circuit that outputs a driving voltage, a detecting circuit that detects an output signal, a multiplexer that connects an electrode serving as a driving electrode to the driving circuit, connects an electrode serving as a detecting electrode to the detecting circuit, and connects an electrode serving as a shielding electrode to the ground, and a CPU that calculates the position of an object to be detected. When the object to be detected is detected, the multiplexer changes the internal electrodes and the external electrodes to the detecting electrodes, the driving electrodes, and the shielding electrodes.11-08-2012
20120092028CAPACITIVE TOUCH SENSING DEVICE BY DETECTING INDUCED ELECTRIC FIELD - A capacitive touch sensing device by detecting induced electric field includes a differential amplifier, a resistor and a signal judgment circuit. The differential amplifier is electrically connected to a touch sensor. The resistor is electrically connected to a first input end and a second input end of the differential amplifier. The signal judgment circuit is electrically connected to an output end of the differential amplifier. As the touch sensor receives an induced electric field signal, the induced electric field signal is amplified by the differential amplifier and the signal judgment circuit determines whether the amplified induced electric field signal is a touch input.04-19-2012
20120092027RFID Wetness Sensing Device - The present invention relates to a RFID tag having sensing capabilities. The RFID device includes an antenna section and a sensor patch section. The antenna is coupled to a chip. The sensor patch section upon exposure to an environmental condition causes the RFID device to change from a first operating condition to a second operating condition.04-19-2012
20120286808SYSTEM FOR LOCATING AND IDENTIFYING AT LEAST TWO SEPARATE ITEMS - A system for locating and identifying at least two separate items, for example packaging, includes a capacitive first sensor detecting a first measuring region at a first position of a sensor device, for example a sensor film on a shelf bottom for packaging, a capacitive second sensor detecting a second measuring region at a second position, differing from the first position, of the sensor device, an electrically conductive first mark of a first item in the measuring region of one sensor, an electrically conductive second mark of a second item in the measuring region of the other sensor, and an evaluation device evaluating signals from the sensors, the signals caused or changed by electrical conductivity of the marks. Items can be capacitively detected and information obtained can be used to improve warehousing. The sensors and the marks can be produced quickly and cost-effectively by printing processes or film transfer.11-15-2012
20120286809Circuit Arrangement for Determining a Capacitance of a Number of Capacitive Sensor Elements - A circuit arrangement for determining a capacitance of a number n of capacitive sensor elements (SE11-15-2012
20130009652ABSOLUTE POSITION MEASUREMENT CAPACITIVE GRATING DISPLACEMENT MEASUREMENT METHOD, SENSOR, AND OPERATING METHOD THEREOF - An absolute position measurement capacitive grating displacement measurement method, a sensor, and an operating method of the sensor are provided. In the measurement method, a drive signal having wave properties is used to excite a transmission grating, and displacement of a measured position in each wavelength is transformed into an initial phase of a time fundamental wave. The displacement of the measured position in each wavelength is acquired through an addition counter. A signal having wave properties output by a drive signal generator of the sensor is connected to a transmission grating, the master clock of an oscillator is connected to each circuit, an output of a reception grating is connected to a synchronous capture circuit through a signal selection switch and an analog processing circuit; and the synchronous capture circuit is connected to a controller, an addition counter, and a Random Access Memory (RAM). The controller is connected to all components. In the operating method of the sensor, an interface unit starts a measurement unit, a controller coordinates operation of all circuits, and after measurement of displacements in coarse, medium, and fine wavelengths is successively completed, the interface unit turns off the measurement unit, performs processing, and displays the measurement result. The circuits are simple, easy to control, and easy to be realized, and have high precision.01-10-2013
20130015862ROTATION ANGLE SENSORAANM Ludwig; RonnyAACI ReutlingenAACO DEAAGP Ludwig; Ronny Reutlingen DE - A rotation angle sensor which has at least one capacitor having capacitor plates and a dielectric designed as a disk. The disk is situated between the capacitor plates, and fills out differently sized surface portions between the capacitor plates, depending on the rotation angle. The rotation angle sensor is designed to determine the rotation angle as a function of a measured value of the capacitance of the at least one capacitor.01-17-2013
20130021044Apparatus and Method for Finger Activity on a Fingerprint Sensor - An apparatus and method for detecting the presence of a finger on a fingerprint sensor is disclosed in one embodiment of the invention as including transmitting a probing signal, comprising a series of probing pulses, to a fingerprint sensing area. A response signal, comprising a series of response pulses, is received from the fingerprint sensing area in response to the probing signal. An upper reference signal is generated and finger activity is detected on the fingerprint sensing area by monitoring whether the peaks of the response pulses exceed the reference signal.01-24-2013
20120242353Physical Property Measuring Method for TFT Liquid Crystal Panel and Physical Property Measuring Apparatus for TFT Liquid Crystal Panel - There is provided a physical property measuring method for a TFT liquid crystal panel, includes an impedance setting step of setting the impedance between the source and drain of a TFT of the TFT liquid crystal panel to be less than or equal to a predetermined value, a voltage application step of applying a voltage that cyclically varies to a liquid crystal layer of the TFT liquid crystal panel. And the method further includes a physical property measuring step of measuring a transient current flowing through the liquid crystal layer to which the voltage that cyclically varies is applied in the voltage application step to measure physical properties of the liquid crystal layer.09-27-2012
20130169294DEVICES AND METHODS HAVING CAPACITANCE SENSE STRUCTURE FORMED OVER HOUSING SURFACE - A capacitance sensing system can include at least a first conductive pattern formed on a first surface of a housing of an electronic device; and a capacitance sensing circuit electrically connected to the first conductive pattern.07-04-2013
20110273190Sensing Apparatus and Associated Methods - An apparatus includes an integrated circuit (IC) configured to sense capacitance, and two or more capacitive elements coupled to the IC. The capacitive elements each have a first section, and one capacitive element has a second section. The first sections of the capacitive elements have the same or substantially the same lengths, shapes, and/or capacitance values.11-10-2011
20110273189SENSING APPARATUS FOR AND ASSOCIATED METHODS - An apparatus includes an integrated circuit (IC) configured to sense capacitance, and two or more capacitive elements coupled to the IC. The capacitive elements each have a first section, and one capacitive element has a second section. The first sections of the capacitive elements have the same or substantially the same lengths, shapes, and/or capacitance values.11-10-2011
20130176037ENVIRONMENTAL INFORMATION MEASUREMENT DEVICE, ENVIRONMENTAL INFORMATION MEASUREMENT SYSTEM, AND ENVIRONMENTAL INFORMATION MEASUREMENT METHOD - An environmental information measurement device includes: a power source unit; an environmental information detector; a timer; and a controller. The power source unit generates, from an electromagnetic wave received, a power source voltage to be supplied to a load. The load includes the environmental information detector, the timer, and the controller. The environmental information detector includes a detector including a circuit element having an impedance or an electrostatic capacitance that varies according to a physical amount detected under an environment at a measurement target point, and outputs a signal that varies according to a response characteristic of the detector. The timer measures a duration from the time when measurement is initiated to the time when a voltage of the signal becomes a predetermined detection voltage. The controller controls an operation of the environmental information detector.07-11-2013
20130134992SENSOR SLEEVE FOR HEALTH MONITORING AN ARTICLE - A sensor sleeve (05-30-2013
20130113504VEHICLE DOOR HANDLE APPARATUS - A vehicle door handle apparatus is provided with a handle main body formed by coupling a first cover and a second cover and a capacitance sensor accommodated in a hollow space in the handle main body. One of the first cover and the second cover is formed with an accommodation recess defined by partition walls. The capacitance sensor is accommodated in the accommodation recess and fixed by a potting agent.05-09-2013
20110267079CAPACITANCE SENSING CIRCUIT AND METHOD OF CAPACITANCE SENSING - A capacitance sensing circuit comprises a capacitive device having a capacitance, the device initially being at a first voltage level. The capacitance sensing circuit is capable of applying one or more pull-up currents to the device during one or more corresponding pull-up periods of time, for changing the first voltage level into one or more corresponding pull-up voltage levels; applying a measurement current to the device; and measuring a measurement period of time, during which one of the pull-up voltage levels changes into a second voltage level. A method of sensing a capacitance of a capacitive device comprises applying a first voltage to the device; applying one or more pull-up currents during corresponding pull-up times, for changing the first voltage into corresponding pull-up voltages; applying a measurement current; and measuring a time, during which one pull-up voltage changes into a second voltage.11-03-2011
20110221452CAPACITIVE SENSOR AND SENSING METHOD - A capacitive sensing method is provided. The capacitive sensing method includes the step of alternately charging/discharging a capacitive sensing electrode of a capacitive sensor for predetermined times under an active mode and charging/discharging the capacitive sensing electrode during a fixed period under a standby mode while an object is not coupled to the capacitive sensing electrode, in which the capacitive sensing electrode has a first capacitance while the object is not coupled to the capacitive sensing electrode. The capacitive sensing method also includes the step of generating a switch signal while the object is coupled to the capacitive sensing electrode under the standby mode such that the capacitive sensing electrode has a second capacitance larger than the first capacitance and the step of switching the standby mode to the active mode according to the switch signal.09-15-2011
20130141118Capacitive Coupling of Bond Pads - In one embodiment, a system includes a touch sensor comprising a first set of electrodes and a first set of bond pads electrically coupled to the first set of electrodes. The system also includes a second set of bond pads capacitively coupled to the first set of bond pads. Each bond pad of the second set of bond pads is coincident with a bond pad of the first set of bond pads. The system also includes a circuit electrically coupled to the second set of bond pads such that signals may be communicated from the first set of bond pads to the circuit.06-06-2013
20130147495End-of-Line Capacitor for Measuring Wiring Impedance of Emergency Notification Circuits - A system includes a capacitor, a plurality of notification devices connected in parallel with the capacitor, and a controller. The controller is capable of determining capacitance of the capacitor during charge-up of the capacitor, and the controller is capable of determining the wiring impedance of the emergency notification circuit during discharge of the capacitor.06-13-2013
20130181727CAPACITIVE SENSOR SHEET AND PRODUCTION METHOD THEREOF - A production method of a capacitive sensor sheet, comprising: a film forming step forming of a optically-transparent electroconductive film 07-18-2013
20120019263Precision Measurement of Capacitor Mismatch - Circuitry and methods for measuring capacitive mismatch with improved precision. The capacitors under measurement are connected in series in a voltage divider, with the node common to both capacitors connected to the gate of a source follower transistor. In one disclosed embodiment of the invention, a ramped voltage is applied to the drain of the source follower transistor simultaneously with the ramped voltage applied to the voltage divider; the slope of the ramped drain voltage is at the nominal slope of the voltage at the common node of the voltage divider. In another embodiment, a second transistor in saturation has its gate coupled to the source of the source follower device, and its source connected to the drain of the source follower device in series with a constant voltage drop. The drain-to-source voltage of the source follower device is thus held constant in each embodiment, improving precision of the measurement.01-26-2012
20130193988Electronic Imager Using an Impedance Sensor Grid Array and Method of Making - An novel impedance sensor is provided having a plurality of substantially parallel drive lines configured to transmit a signal into a surface of a proximally located object, and also a plurality of substantially parallel pickup lines oriented substantially perpendicular to the drive lines and separated from the pickup lines by a dielectric to form intrinsic electrode pairs that are impedance sensitive at each of the drive and pickup crossover locations.08-01-2013
20120086465MEASURING APPARATUS AND METHOD FOR CAPACITOR - A measuring apparatus for capacitor is applied to a charging power source and a capacitor to be measured. The measuring apparatus for capacitor includes a microcontroller unit, an analog-digital converter unit, a charging-side switch unit, a charging-side resistor unit, a discharging-side switch unit and a discharging-side resistor unit. The capacitor to be measured is charged and discharged by the charging-side switch unit and the discharging-side switch unit controlled by the microcontroller unit. The charging and discharging voltage and time variation of the capacitor to be measured are measured by the analog-digital converter unit to calculate the capacitance value of the capacitor to be measured.04-12-2012

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