DE50206743D1 - Elektrische Schaltung für ein kapazitives Sensorelement - Google Patents

Elektrische Schaltung für ein kapazitives Sensorelement

Info

Publication number
DE50206743D1
DE50206743D1 DE50206743T DE50206743T DE50206743D1 DE 50206743 D1 DE50206743 D1 DE 50206743D1 DE 50206743 T DE50206743 T DE 50206743T DE 50206743 T DE50206743 T DE 50206743T DE 50206743 D1 DE50206743 D1 DE 50206743D1
Authority
DE
Germany
Prior art keywords
sensor element
circuit
capacitor
charging
microcontroller
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE50206743T
Other languages
English (en)
Inventor
Bernd Supper
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EGO Elektro Geratebau GmbH
Original Assignee
EGO Elektro Geratebau GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by EGO Elektro Geratebau GmbH filed Critical EGO Elektro Geratebau GmbH
Application granted granted Critical
Publication of DE50206743D1 publication Critical patent/DE50206743D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/96—Touch switches
    • H03K17/962—Capacitive touch switches
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/945—Proximity switches
    • H03K17/955—Proximity switches using a capacitive detector
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
    • H03K2217/94—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated
    • H03K2217/96—Touch switches
    • H03K2217/9607—Capacitive touch switches
    • H03K2217/960705—Safety of capacitive touch and proximity switches, e.g. increasing reliability, fail-safe
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
    • H03K2217/94—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated
    • H03K2217/96—Touch switches
    • H03K2217/9607—Capacitive touch switches
    • H03K2217/96071—Capacitive touch switches characterised by the detection principle
    • H03K2217/960725—Charge-transfer
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
    • H03K2217/94—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated
    • H03K2217/96—Touch switches
    • H03K2217/9607—Capacitive touch switches
    • H03K2217/960735—Capacitive touch switches characterised by circuit details
    • H03K2217/960745—Capacitive differential; e.g. comparison with reference capacitance
DE50206743T 2002-02-27 2002-02-27 Elektrische Schaltung für ein kapazitives Sensorelement Expired - Lifetime DE50206743D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20020004453 EP1341306B1 (de) 2002-02-27 2002-02-27 Elektrische Schaltung für ein kapazitives Sensorelement

Publications (1)

Publication Number Publication Date
DE50206743D1 true DE50206743D1 (de) 2006-06-14

Family

ID=27675644

Family Applications (1)

Application Number Title Priority Date Filing Date
DE50206743T Expired - Lifetime DE50206743D1 (de) 2002-02-27 2002-02-27 Elektrische Schaltung für ein kapazitives Sensorelement

Country Status (5)

Country Link
US (1) US7375536B2 (de)
EP (1) EP1341306B1 (de)
AT (1) ATE326078T1 (de)
DE (1) DE50206743D1 (de)
ES (1) ES2261536T3 (de)

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NL1024386C2 (nl) * 2003-09-26 2005-04-08 Jtag Technologies Bv Werkwijze en meetinrichting voor het bepalen van de capaciteit van een capacitieve elektrische component aangesloten op een geïntegreerde schakeling.
DE102004006020A1 (de) 2004-02-06 2005-08-25 E + E Elektronik Ges.M.B.H. Schaltungsanordnung zur kapazitiven Feuchtemessung und Verfahren zum Betrieb derselben
JP4310695B2 (ja) 2004-03-30 2009-08-12 アイシン精機株式会社 静電容量変化検出装置
US7472028B2 (en) * 2004-06-25 2008-12-30 Kele Inc. Sensor or capacitance measuring with a microprocessor
EP1910811A1 (de) * 2005-02-25 2008-04-16 Automotive AG Verfahren und vorrichtung zur bestimmung von in der atmosphäre enthaltenen gas-oder dampfkonzentrationen
FR2885416B1 (fr) * 2005-05-07 2016-06-10 Acam Messelectronic Gmbh Procede et dispositif de mesure de capacites.
DE102005063023A1 (de) * 2005-12-14 2007-06-21 Gerd Reime Anordnung zur Überwachung eines Objekts
US7830267B2 (en) * 2006-01-10 2010-11-09 Guardian Industries Corp. Rain sensor embedded on printed circuit board
US10173579B2 (en) 2006-01-10 2019-01-08 Guardian Glass, LLC Multi-mode moisture sensor and/or defogger, and related methods
US7551095B2 (en) 2006-01-10 2009-06-23 Guardian Industries Corp. Rain sensor with selectively reconfigurable fractal based sensors/capacitors
US7492270B2 (en) 2006-01-10 2009-02-17 Guardian Industries Corp. Rain sensor with sigma-delta modulation and/or footprinting comparison(s)
US8634988B2 (en) * 2006-01-10 2014-01-21 Guardian Industries Corp. Time, space, and/or wavelength multiplexed capacitive light sensor, and related methods
EP1971510B1 (de) * 2006-01-10 2010-10-13 Guardian Industries Corp. Regensensor mit sigma-delta-modulation und/oder footprint-vergleich(en)
US9371032B2 (en) 2006-01-10 2016-06-21 Guardian Industries Corp. Moisture sensor and/or defogger with Bayesian improvements, and related methods
US20070175322A1 (en) * 2006-02-02 2007-08-02 Xpresense Llc RF-based dynamic remote control device based on generating and sensing of electrical field in vicinity of the operator
CN1832349A (zh) * 2006-04-19 2006-09-13 北京希格玛晶华微电子有限公司 一种电容测量触摸感应、辨认方法及实现装置
WO2007140928A1 (de) * 2006-06-02 2007-12-13 E.G.O. Elektro-Gerätebau GmbH Schaltungsanordnung zum bestimmen einer kapazität eines kapazitiven sensorelements
KR101225973B1 (ko) * 2006-06-09 2013-01-24 엘지전자 주식회사 전기전자기기의 정전 용량형 스위치
DE102012207430A1 (de) * 2012-05-04 2013-11-07 Robert Bosch Gmbh Schaltungsanordnung zur Messung einer Sensorelementkapazität
RU2546713C1 (ru) * 2013-12-26 2015-04-10 Игорь Петрович Шепеть Микроконтроллерный измерительный преобразователь емкости и сопротивления в двоичный код
RU2565813C1 (ru) * 2014-07-14 2015-10-20 Александр Витальевич Вострухин Микроконтроллерный измерительный преобразователь сопротивления, емкости и напряжения в двоичный код
DE102014216998B4 (de) * 2014-08-26 2016-10-27 Ifm Electronic Gmbh Kapazitiver Sensor, die zugehörige Auswerteschaltung und Aktor in einem Kraftfahrzeug
US9176636B1 (en) * 2014-10-22 2015-11-03 Cypress Semiconductor Corporation Low power capacitive sensor button
FR3027716B1 (fr) * 2014-10-28 2017-10-06 Continental Automotive France Capteur de detection de la presence d'un utilisateur pour le deverrouillage d'un acces a un vehicule
FR3027717B1 (fr) * 2014-10-28 2016-12-09 Continental Automotive France Procede de detection par un capteur de la presence d'un utilisateur pour le deverrouillage d'un acces a un vehicule automobile et capteur associe
EP3086473B1 (de) * 2015-04-23 2018-03-21 Nxp B.V. Sensorschaltung und verfahren
KR102353494B1 (ko) * 2017-06-30 2022-01-20 삼성전자주식회사 사용자의 근접을 검출하기 위한 전자 장치 및 그의 동작 방법

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4363029A (en) * 1980-11-17 1982-12-07 Texas Instruments Incorporated Switch for sensing proximity of an operator
US5012124A (en) * 1989-07-24 1991-04-30 Hollaway Jerrell P Touch sensitive control panel
JP2516502B2 (ja) * 1991-09-25 1996-07-24 日本写真印刷株式会社 入力装置
US5311084A (en) * 1992-06-23 1994-05-10 At&T Bell Laboratories Integrated circuit buffer with controlled rise/fall time
US5325068A (en) * 1992-07-14 1994-06-28 Abdul Rauf Test system for measurements of insulation resistance
US5585733A (en) * 1992-09-10 1996-12-17 David Sarnoff Research Center Capacitive sensor and method of measuring changes in capacitance
RO112921B1 (ro) * 1995-02-24 1998-01-30 Universitatea Tehnică 'gheorghe Asachi' Traductor de nivel, pentru lichide conductoare
DE19701899C2 (de) * 1996-01-21 2001-01-25 Ifm Electronic Gmbh Schaltungsanordnung und Verfahren zur Erfassung der Kapazität bzw. einer Kapazitätsänderung eines kapazitiven Schaltungs- oder Bauelementes
US6194903B1 (en) 1996-01-21 2001-02-27 I F M Electronic Gmbh Circuit for acquisition of the capacitance or capacitance change of a capacitive circuit element or component
ES2234042T3 (es) * 1997-02-17 2005-06-16 E.G.O. Elektro-Geratebau Gmbh Conjunto de circuitos para un elemento sensor.
ES2174342T3 (es) * 1997-02-17 2002-11-01 Ego Elektro Geraetebau Gmbh Interruptor por tacto con tecla sensorial.
US5933102A (en) * 1997-09-24 1999-08-03 Tanisys Technology, Inc. Capacitive sensitive switch method and system
JP2001027655A (ja) * 1999-07-13 2001-01-30 Horiba Ltd 容量型センサの信号処理回路
US6897390B2 (en) * 2001-11-20 2005-05-24 Touchsensor Technologies, Llc Molded/integrated touch switch/control panel assembly and method for making same

Also Published As

Publication number Publication date
US7375536B2 (en) 2008-05-20
EP1341306B1 (de) 2006-05-10
US20040051396A1 (en) 2004-03-18
EP1341306A1 (de) 2003-09-03
ATE326078T1 (de) 2006-06-15
ES2261536T3 (es) 2006-11-16

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