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Class 324/658 - Using capacitive type measurement


Subclass of Class 324 - Electricity: measuring and testing
Definition: Subject matter including the measuring of a property of
No. of patents: 445
Last issue date: 05/29/2012


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NumberTitleIssue Date
8188753Analog 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 st...
05/29/2012
8183873Contact sensor unit, electronic device, and method for producing a contact sensor unit
A contact sensor unit includes: a flexible substrate having a conductive pattern; a sensor element having a detecting surface for detecting a fingerprint of a test subject, the sensor element having a terminal electrically connected to the conductive pattern, and th...
05/22/2012
8183874Monitoring 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. E...
05/22/2012
8179150Monitoring 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 bre...
05/15/2012
8164350Capacitive angle encoder and withdrawable feeder for circuit board component insertion machines
The invention relates to a capacitive angle encoder for detecting a rotational position of a rotatable object relative to a stationary object as well as a withdrawable feeder for circuit board component insertion machines, said withdrawable feeder being equipped wit...
04/24/2012
8164349Capacitively-coupled electrostatic (CCE) probe arrangement for detecting strike step in a plasma processing chamber and methods thereof
A method for identifying a stabilized plasma within a processing chamber of a plasma processing system is provided. The method includes executing a strike step within the processing chamber to generate a plasma. The strike step includes applying a substantially high...
04/24/2012
8143904System 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 ...
03/27/2012
8138772Capacitive sensing and method
A capacitive vehicle sensor includes a sensing electrode configured to generate an electric field, a shield electrode configured to reduce the electromagnetic influence of electric fields generated by objects outside of the electric field, a circuit coupled to the s...
03/20/2012
8134374Evaluation circuit for capacitance and method thereof
In an evaluation method, voltages at ends of a to-be-measured capacitor and a capacitance-adjustable circuit are switched in response to a first set of clock signals so as to adjust an integrated voltage to be a sum of the integrated voltage and a first difference v...
03/13/2012
8125231Capacitance-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 ope...
02/28/2012
8120370Capacitive electromagnetic flowmeter
The surface of a signal electrode is treated as substrate treatment. An oxide film on the surface of the signal electrode is removed by roughing. The roughened surface is used as a surface treated face. A coating of fluororesin is provided on the surface treated fac...
02/21/2012
8076948Distance measurement with capacitive sensor
Circuits and methods to read out capacitive sensors for distance measurement used by a position control system having a high accuracy and low noise have been disclosed. The ratio or difference of the capacitances of two sensor capacitors is used to determine the dis...
12/13/2011
8054089Capacitance measuring circuit
The present invention is based on the finding that a capacitance can be measured precisely and efficiently when, in a delta-sigma modulator having an operational amplifier, a first capacitor connectable to an input of the operational amplifier, and a second capacito...
11/08/2011
8040142Touch detection techniques for capacitive touch sense systems
A technique for recognizing and rejecting false activation events related to a capacitance sense interface includes measuring a capacitance value of a capacitance sensor within the capacitance sense interface to generate a measured capacitance value. The measured ca...
10/18/2011
8022714Capacitance measurement apparatus
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. ...
09/20/2011
8008930Characterization 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 met...
08/30/2011
7999561Resin impregnated amount measuring method and resin impregnated amount measuring device in filament winding molding
A resin impregnated amount measuring method and device for accurately and successively measuring an amount of resin impregnated in a fiber in a filament winding molding. An electrostatic capacitance of a fiber impregnated with resin is measured, and an amount of res...
08/16/2011
7948244Capacitive sensors including gain and active-filtered sampling stages
Embodiments of capacitive sensors (500, 600) and methods for reducing noise in capacitive sensors are provided. Embodiments of capacitive sensors include a gain stage (510, 610), a capacitive sensor output, and an active filtered-sampling stage (550...
05/24/2011
7902838Sensor device for determining a fluid property
A sensor device (10) for making at least one determination regarding a selected characteristic of a fluid includes a support post (32) that is adapted to be exposed to the fluid. A capacitor has electrodes (66, 68) that are supported near one en...
03/08/2011
7884621Successive approximate capacitance measurement circuit
A capacitance measurement circuit includes a current source, a switch, and a comparator. The current source is coupled to drive a current through a circuit node. The switch is coupled to the circuit node to switch the current into a device under test (“DUT”) cap...
02/08/2011
7884622Method 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 o...
02/08/2011
7812619Capacitance measuring apparatus and capacitance measuring method
A capacitance measuring apparatus which comprises: a voltage source for applying voltage fluctuation to a device under test; a current source for absorbing the current flowing through the resistance component of the device under test; and an ammeter for measuring th...
10/12/2010
7804305Method and apparatus to select a parameter/mode using a capacitor of a feedback loop of the power supply
Techniques are disclosed to select functional parameters and/or operating modes of a circuit based on a time measurement are disclosed. One example integrated circuit includes a threshold detection and timing circuit that is coupled to measure a signal during an ini...
09/28/2010
7782068Circuit 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 ...
08/24/2010
7746085Micromechanical sensor having an analyzer circuit
A micromechanical sensor having an analyzer circuit and at least two detecting elements, each of the two detecting elements being connected to the analyzer circuit by at least one signal line. At least one signal line is connected to both detecting elements. ...
06/29/2010
7719289Measuring device for measuring the state of oils or fats
A measuring device is used to measure the state of oils of fats. Said measuring device comprises a housing, a hollow connecting element which is secured therein and a carrier which is applied to the opposite end of the connecting element, said carrier being used to ...
05/18/2010
7714594Current detection printed board, voltage detection printed board, and current/voltage detector using same, and current detector and voltage detector
A current detection printed board includes: a board having a penetration hole that penetrates the board; and at least one wire that is formed in a coiled shape having both ends by penetrating the board along the periphery of the penetration hole and alternately conn...
05/11/2010
7679376Capacitive sensor for sensing tactile and proximity, and a sensing system using the same
A capacitive sensor includes an upper electrode layer having a plurality of electrodes disposed in line with each other, a lower electrode layer having a plurality of electrodes disposed in line with each other, an insulating layer disposed between the upper electro...
03/16/2010
7659730Measuring apparatus and method for recognizing foreign bodies in a product, particularly tobacco, cotton or another fibrous product
The invention concerns a measuring apparatus for the detection of foreign bodies in a product, in particular in tobacco, cotton or some other fibrous product, having a measuring device, a device for generating an alternating electromagnetic field in the measuring de...
02/09/2010
7633300Method for using touch signals and a touch unit
A method for evaluating touch signals on a touch unit which has two resistance foils (1, 2). The current (IX, IY) resulting from applying a given measurement voltage (UX, UY) to at least one of the resistance foils (1, 2) is measured and stored as a de...
12/15/2009
7598753Human body detecting device for vehicles
A human body detecting device for a vehicle includes a sensor electrode provided in a door handle arranged on outside of a vehicle door, the sensor electrode changing the electrostatic capacitance in response to an approach of human body and a determining circuit fo...
10/06/2009
7589537Device and method of monitoring ground connection of moving equipment with insulative bearing arrangement
A device and method of monitoring ground connection of moving equipment with insulative bearing arrangement is provided that does not use a spring contact that wears out and fails. The device provides a reliable method to monitor the ground connection of the moving ...
09/15/2009
7564247Operating element with a proximity sensor and shield
An operating element, in particular for a motor vehicle component, includes an actuating element that is movably supported in a carrier element and acts, in particular, on a switch element. To detect an approach of a user to the operating element, but at the same ti...
07/21/2009
7508220Detection assembly and lithographic projection apparatus provided with such a detection assembly
An assembly for capacitively detecting an object on a support structure includes at least one electrode being arranged in the vicinity of the support structure, and at least one cable being connected to the at least one electrode. The at least one cable has a first ...
03/24/2009
7501834Voice coil actuator with embedded capacitive sensor for motion, position and/or acceleration detection
A voice coil actuator having a capacitive sensor. A magnetic housing contains at least one magnet, and has a wall that defines a first cavity. A magnetic core is coupled to the magnetic housing and extend from an interior surface of the magnetic housing in a directi...
03/10/2009
7486086Method for measuring intrinsic capacitance of a metal oxide semiconductor (MOS) device
A method for measuring intrinsic capacitance of a MOS device is provided. The MOS device includes a first terminal, a second terminal, a third terminal and a fourth terminal. First, provide a first input signal to the second terminal and ground the third terminal an...
02/03/2009
7479788Capacitive sensing device tuning
In one embodiment, the present invention receives sensitivity data corresponding to a plurality of first sensor channels of a respective plurality of capacitive sensing devices and utilizes the sensitivity data to determine a range of expected variation pertaining t...
01/20/2009
7466145Voltage measuring apparatus and power measuring apparatus
A voltage measuring apparatus measures the voltage of a measured object and includes a detection electrode capable of being disposed facing the measured object, a variable capacitance circuit that is connected between the detection electrode and a reference potentia...
12/16/2008
7453269Magnetic MEMS sensor device
A microelectromechanical system (MEMS) sensor and method for measuring the motion of an intermediate member and a method for making the MEMS sensor. The MEMS sensor includes a substrate, a lower magnetic member disposed on the substrate, a layer disposed over the su...
11/18/2008
7449894Voice coil actuator with embedded capacitive sensor for motion, position and/or acceleration detection
A voice coil actuator having a capacitive sensor. A magnetic housing contains at least one magnet, and has a wall that defines a first cavity. A magnetic core is coupled to the magnetic housing and extend from an interior surface of the magnetic housing in a directi...
11/11/2008
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