CN1310015C - 桥接电容传感器测量电路 - Google Patents

桥接电容传感器测量电路 Download PDF

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Publication number
CN1310015C
CN1310015C CNB038040042A CN03804004A CN1310015C CN 1310015 C CN1310015 C CN 1310015C CN B038040042 A CNB038040042 A CN B038040042A CN 03804004 A CN03804004 A CN 03804004A CN 1310015 C CN1310015 C CN 1310015C
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CN
China
Prior art keywords
capacitor
sensing
during
linked
voltage level
Prior art date
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Expired - Fee Related
Application number
CNB038040042A
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English (en)
Chinese (zh)
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CN1643342A (zh
Inventor
汪荣泰
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Rosemount Inc
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Rosemount Inc
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Publication of CN1643342A publication Critical patent/CN1643342A/zh
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
    • G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
    • G01R27/2605—Measuring capacitance

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
  • Measuring Fluid Pressure (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
CNB038040042A 2002-02-15 2003-01-27 桥接电容传感器测量电路 Expired - Fee Related CN1310015C (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/077,402 US6720777B2 (en) 2002-02-15 2002-02-15 Bridged capacitor sensor measurement circuit
US10/077,402 2002-02-15

Publications (2)

Publication Number Publication Date
CN1643342A CN1643342A (zh) 2005-07-20
CN1310015C true CN1310015C (zh) 2007-04-11

Family

ID=27732642

Family Applications (1)

Application Number Title Priority Date Filing Date
CNB038040042A Expired - Fee Related CN1310015C (zh) 2002-02-15 2003-01-27 桥接电容传感器测量电路

Country Status (7)

Country Link
US (1) US6720777B2 (https=)
JP (1) JP4679820B2 (https=)
CN (1) CN1310015C (https=)
AU (1) AU2003214897A1 (https=)
DE (1) DE10392352B4 (https=)
RU (1) RU2301405C2 (https=)
WO (1) WO2003071230A2 (https=)

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DE102005038875A1 (de) * 2005-05-25 2006-11-30 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Kapazitätsmessschaltung
US7236113B1 (en) 2006-01-26 2007-06-26 Emerson Process Management Capacitance-to-digital modulator with sensor failure-mode detection
US7319421B2 (en) * 2006-01-26 2008-01-15 Emerson Process Management Foldback free capacitance-to-digital modulator
US7324029B2 (en) * 2006-01-26 2008-01-29 Emerson Process Management Capacitance-to-digital interface circuit for differential pressure sensor
US8144125B2 (en) 2006-03-30 2012-03-27 Cypress Semiconductor Corporation Apparatus and method for reducing average scan rate to detect a conductive object on a sensing device
US8040142B1 (en) 2006-03-31 2011-10-18 Cypress Semiconductor Corporation Touch detection techniques for capacitive touch sense systems
US8547114B2 (en) 2006-11-14 2013-10-01 Cypress Semiconductor Corporation Capacitance to code converter with sigma-delta modulator
US8089288B1 (en) 2006-11-16 2012-01-03 Cypress Semiconductor Corporation Charge accumulation capacitance sensor with linear transfer characteristic
US8144126B2 (en) 2007-05-07 2012-03-27 Cypress Semiconductor Corporation Reducing sleep current in a capacitance sensing system
US9500686B1 (en) 2007-06-29 2016-11-22 Cypress Semiconductor Corporation Capacitance measurement system and methods
US8169238B1 (en) 2007-07-03 2012-05-01 Cypress Semiconductor Corporation Capacitance to frequency converter
US8570053B1 (en) 2007-07-03 2013-10-29 Cypress Semiconductor Corporation Capacitive field sensor with sigma-delta modulator
CN101796422A (zh) * 2007-07-11 2010-08-04 马里米斯有限公司 用于电容性地检测物体的方法和装置
US7928721B2 (en) * 2007-07-26 2011-04-19 Fluke Corporation Method and apparatus for amplifying a signal and test device using same
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US8358142B2 (en) 2008-02-27 2013-01-22 Cypress Semiconductor Corporation Methods and circuits for measuring mutual and self capacitance
US8319505B1 (en) 2008-10-24 2012-11-27 Cypress Semiconductor Corporation Methods and circuits for measuring mutual and self capacitance
FI121979B (fi) * 2008-03-26 2011-06-30 Elsi Technologies Oy Sovitinkomponentti mittausjärjestelmään
US7633420B2 (en) * 2008-05-07 2009-12-15 Honeywell International Inc. Pressure sensor with improved rate-of-change compatible data output
US8321174B1 (en) 2008-09-26 2012-11-27 Cypress Semiconductor Corporation System and method to measure capacitance of capacitive sensor array
EP2177880A1 (en) * 2008-10-16 2010-04-21 Dialog Imaging Systems GmbH Distance measurement with capacitive sensor
US9069405B2 (en) 2009-07-28 2015-06-30 Cypress Semiconductor Corporation Dynamic mode switching for fast touch response
US8723827B2 (en) 2009-07-28 2014-05-13 Cypress Semiconductor Corporation Predictive touch surface scanning
DE102010001377A1 (de) * 2010-01-29 2011-08-04 E.G.O. Elektro-Gerätebau GmbH, 75038 Schaltungsanordnung zum Bestimmen einer Kapazität einer Anzahl von kapazitiven Sensorelementen
US8714012B2 (en) * 2010-02-16 2014-05-06 Stmicroelectronics S.R.L. Microelectromechanical gyroscope with inversion of actuation forces, and method for actuating a microelectromechanical gyroscope
JP5287785B2 (ja) * 2010-04-07 2013-09-11 株式会社デンソー 静電容量式物理量センサ回路
KR20130108556A (ko) 2010-08-23 2013-10-04 사이프레스 세미컨덕터 코포레이션 컨패시턴스 스캐닝 근접성 검출
FR2968488B1 (fr) * 2010-12-01 2012-12-21 St Microelectronics Rousset Procede de commande d'une surface tactile capacitive
DE102011114502A1 (de) * 2011-09-29 2013-04-04 GEMAC-Gesellschaft für Mikroelektronikanwendung Chemnitz mbH Messverfahren zur dynamischen Kapazitätsmessung nach dem Delta-Sigma-Prinzip und Schaltungsanordnung zur Durchführung des Verfahrens
DE102012210004B4 (de) * 2012-06-14 2014-11-06 Robert Bosch Gmbh Balkendetektor mit Regelschaltung
DE102012025037C5 (de) * 2012-12-20 2017-10-26 I.G. Bauerhin Gmbh Verfahren zur kapazitiven Sitzbelegungserkennung für Fahrzeugsitze
CN103475373B (zh) * 2013-09-02 2016-08-17 深圳市汇顶科技股份有限公司 一种分段电容阵列结构数模转换器
FI126999B (en) * 2014-01-17 2017-09-15 Murata Manufacturing Co Improved pressure sensor
US9628104B2 (en) * 2015-03-13 2017-04-18 Rosemount Inc. High resolution sigma delta modulator for capacitance sensor terminal displacement measurement
CN104767512A (zh) * 2015-04-16 2015-07-08 东莞市乐升电子有限公司 电容触摸按键信号测量装置及其测量方法
CN105742334A (zh) * 2016-05-03 2016-07-06 京东方科技集团股份有限公司 有机电致发光显示器件和显示装置
CN107271939A (zh) * 2017-06-21 2017-10-20 北方电子研究院安徽有限公司 一种电容传感器结构阻容测试开关装置
WO2019047214A1 (zh) * 2017-09-11 2019-03-14 深圳市汇顶科技股份有限公司 电容检测电路、电容检测的方法、触摸检测装置和终端设备
JP7146668B2 (ja) * 2019-02-21 2022-10-04 ラピスセミコンダクタ株式会社 容量センサ回路及び半導体集積回路
CN109828159B (zh) * 2019-03-07 2021-06-18 上海申矽凌微电子科技有限公司 测量电容大小的电路
CN113472351A (zh) * 2021-07-13 2021-10-01 上海料聚微电子有限公司 一种精准测量片上电容比例的电路和方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5083091A (en) * 1986-04-23 1992-01-21 Rosemount, Inc. Charged balanced feedback measurement circuit
US5194819A (en) * 1990-08-10 1993-03-16 Setra Systems, Inc. Linearized capacitance sensor system
US5637802A (en) * 1995-02-28 1997-06-10 Rosemount Inc. Capacitive pressure sensor for a pressure transmitted where electric field emanates substantially from back sides of plates
US5661240A (en) * 1995-09-25 1997-08-26 Ford Motor Company Sampled-data interface circuit for capacitive sensors
US6140952A (en) * 1997-12-26 2000-10-31 Rosemount Inc. Delta sigma circuit with pulse width modulated offset
CN1291715A (zh) * 1999-07-26 2001-04-18 株式会社山武 检测器信号处理设备
US6295875B1 (en) * 1999-05-14 2001-10-02 Rosemount Inc. Process pressure measurement devices with improved error compensation

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JPS62207903A (ja) * 1986-03-07 1987-09-12 Mitsutoyo Mfg Corp 静電容量式変位検出装置
IL82194A (en) * 1986-04-23 1992-03-29 Rosemount Inc Measurement circuit
JPS6461670A (en) * 1987-09-01 1989-03-08 Nec Corp Capacitance meter
DE4115534A1 (de) * 1991-05-13 1992-11-19 Horst Dr Ahlers Optoelektronische einrichtung zur vermessung von strukturkanten
US5329818A (en) * 1992-05-28 1994-07-19 Rosemount Inc. Correction of a pressure indication in a pressure transducer due to variations of an environmental condition
JP3282360B2 (ja) * 1994-03-02 2002-05-13 株式会社村田製作所 容量型センサ
JP4272267B2 (ja) * 1997-07-04 2009-06-03 東京エレクトロン株式会社 静電容量型センサ回路
JP2000065664A (ja) * 1998-08-26 2000-03-03 Hitachi Ltd 静電容量式力学量センサ

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5083091A (en) * 1986-04-23 1992-01-21 Rosemount, Inc. Charged balanced feedback measurement circuit
US5194819A (en) * 1990-08-10 1993-03-16 Setra Systems, Inc. Linearized capacitance sensor system
US5637802A (en) * 1995-02-28 1997-06-10 Rosemount Inc. Capacitive pressure sensor for a pressure transmitted where electric field emanates substantially from back sides of plates
US5661240A (en) * 1995-09-25 1997-08-26 Ford Motor Company Sampled-data interface circuit for capacitive sensors
US6140952A (en) * 1997-12-26 2000-10-31 Rosemount Inc. Delta sigma circuit with pulse width modulated offset
US6295875B1 (en) * 1999-05-14 2001-10-02 Rosemount Inc. Process pressure measurement devices with improved error compensation
CN1291715A (zh) * 1999-07-26 2001-04-18 株式会社山武 检测器信号处理设备

Also Published As

Publication number Publication date
RU2004127586A (ru) 2005-04-10
WO2003071230A3 (en) 2003-11-06
CN1643342A (zh) 2005-07-20
US20030155936A1 (en) 2003-08-21
DE10392352B4 (de) 2010-08-19
JP2005517945A (ja) 2005-06-16
WO2003071230A2 (en) 2003-08-28
AU2003214897A1 (en) 2003-09-09
JP4679820B2 (ja) 2011-05-11
US6720777B2 (en) 2004-04-13
DE10392352T5 (de) 2005-05-19
AU2003214897A8 (en) 2003-09-09
RU2301405C2 (ru) 2007-06-20

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Granted publication date: 20070411

Termination date: 20200127