WO2004085970A3 - Detection de presence par capteur capacitif - Google Patents

Detection de presence par capteur capacitif Download PDF

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Publication number
WO2004085970A3
WO2004085970A3 PCT/EP2004/050346 EP2004050346W WO2004085970A3 WO 2004085970 A3 WO2004085970 A3 WO 2004085970A3 EP 2004050346 W EP2004050346 W EP 2004050346W WO 2004085970 A3 WO2004085970 A3 WO 2004085970A3
Authority
WO
WIPO (PCT)
Prior art keywords
capacitor
parameter
variation
capacitive sensor
presence detection
Prior art date
Application number
PCT/EP2004/050346
Other languages
English (en)
Other versions
WO2004085970A2 (fr
Inventor
Ciprian Musat
Xavier Hourne
Original Assignee
Valeo Securite Habitacle
Ciprian Musat
Xavier Hourne
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 Valeo Securite Habitacle, Ciprian Musat, Xavier Hourne filed Critical Valeo Securite Habitacle
Priority to EP04722576A priority Critical patent/EP1611417A2/fr
Priority to JP2006505482A priority patent/JP4558715B2/ja
Publication of WO2004085970A2 publication Critical patent/WO2004085970A2/fr
Publication of WO2004085970A3 publication Critical patent/WO2004085970A3/fr

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B81/00—Power-actuated vehicle locks
    • E05B81/54—Electrical circuits
    • E05B81/64—Monitoring or sensing, e.g. by using switches or sensors
    • E05B81/76—Detection of handle operation; Detection of a user approaching a handle; Electrical switching actions performed by door handles
    • E05B81/78—Detection of handle operation; Detection of a user approaching a handle; Electrical switching actions performed by door handles as part of a hands-free locking or unlocking operation
    • 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
    • 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

Landscapes

  • Geophysics And Detection Of Objects (AREA)
  • Electronic Switches (AREA)
  • Power-Operated Mechanisms For Wings (AREA)

Abstract

La présente invention a pour objet un capteur de présence (1) de type capacitif, comprenant au moins une électrode (3) de détection faisant partie d'un condensateur (5) dont la capacité (Cx) est susceptible de varier à l'approche d'un objet ou d'une partie de corps d'un utilisateur, et une unité de charge (9) du condensateur appliquant des cycles de charge audit condensateur (5). Le capteur comprend en outre des moyens de mesure (11) d'une grandeur dont la variation reflète une variation du courant de charge du condensateur (5) et, relié à ces moyens de mesure (5), une unité d'exploitation (13) de cette grandeur pour déterminer à partir de la variation de ladite grandeur entre des cycles successifs de charge du condensateur une variation de ladite capacité du condensateur (5) suite à une approche d'un objet ou d'une partie de corps d'un utilisateur.
PCT/EP2004/050346 2003-03-27 2004-03-23 Detection de presence par capteur capacitif WO2004085970A2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP04722576A EP1611417A2 (fr) 2003-03-27 2004-03-23 Detection de presence par capteur capacitif
JP2006505482A JP4558715B2 (ja) 2003-03-27 2004-03-23 静電容量型存在検知センサ

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0303976 2003-03-27
FR0303976A FR2853058B1 (fr) 2003-03-27 2003-03-27 Detection de presence par capteur capacitif

Publications (2)

Publication Number Publication Date
WO2004085970A2 WO2004085970A2 (fr) 2004-10-07
WO2004085970A3 true WO2004085970A3 (fr) 2005-08-11

Family

ID=32947332

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2004/050346 WO2004085970A2 (fr) 2003-03-27 2004-03-23 Detection de presence par capteur capacitif

Country Status (4)

Country Link
EP (1) EP1611417A2 (fr)
JP (1) JP4558715B2 (fr)
FR (1) FR2853058B1 (fr)
WO (1) WO2004085970A2 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2853058B1 (fr) * 2003-03-27 2005-05-13 Valeo Securite Habitacle Detection de presence par capteur capacitif
FR2886725B1 (fr) * 2005-06-01 2007-08-31 Valeo Securite Habitacle Sas Dispositif de detection d'une variation de capacitance et capteur capacitif de detection de presence d'un utilisateur, implementant un tel dispositif
GB2475735A (en) * 2009-11-27 2011-06-01 Gpeg Internat Ltd Detecting touches with an oscillator with a frequency dependent on the capacitance of a touch sensor
FR3059499B1 (fr) * 2016-11-29 2019-01-25 Continental Automotive France Procede de detection d'approche et/ou de contact de la main d'un utilisateur pres d'une poignee de portiere de vehicule automobile, capteur capacitif et module de detection associes
JP6905404B2 (ja) * 2017-07-13 2021-07-21 株式会社アルファ 挟み込み検知装置及び開閉システム
DE102018107478A1 (de) * 2017-09-14 2019-03-14 Huf Hülsbeck & Fürst Gmbh & Co. Kg Verfahren und Auswertesystem zur Auswertung eines kapazitiven Sensors bei einem Fahrzeug

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2917732A (en) * 1957-03-22 1959-12-15 Librascope Inc Detector for indicating presence of objects
US3984757A (en) * 1973-01-05 1976-10-05 Gott Daniel A Proximity actuated power control variable as to sense and magnitude
WO1985002268A1 (fr) * 1983-11-09 1985-05-23 Consolidated Technology (Aust) Pty. Ltd. Detecteur d'objets
US5498995A (en) * 1993-03-17 1996-03-12 National Semiconductor Corporation Short circuit frequency shift circuit for switching regulators
US6366099B1 (en) * 1999-12-21 2002-04-02 Conrad Technologies, Inc. Differential capacitance sampler
US6417649B1 (en) * 2000-07-20 2002-07-09 Koninklijke Philips Electronics N.V. System and method for charging a capacitor using a constant frequency current waveform
FR2829317A1 (fr) * 2001-08-30 2003-03-07 Valeo Electronique Capteur de presence

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1980001643A1 (fr) * 1979-02-12 1980-08-21 American Hospital Supply Corp Circuit de commutation capacitif pour dispositif d'excitation a commande a distance
JPS5857774U (ja) * 1981-10-06 1983-04-19 株式会社明電舎 移動物体検出装置
EP0165256A4 (fr) * 1983-11-09 1986-09-24 Cons Technology Aust Pty Ltd Detecteur d'objets.
DE3544187A1 (de) * 1985-12-13 1987-06-19 Flowtec Ag Kapazitaetsmessschaltung
US5073757A (en) * 1988-09-23 1991-12-17 John Fluke Mfg. Co., Inc. Apparatus for and method of measuring capacitance of a capacitive element
JPH05196668A (ja) * 1991-08-16 1993-08-06 Kazuyuki Yahagi 周波数カウンタを用いた電気回路素子測定器
JPH0784063A (ja) * 1993-09-20 1995-03-31 Aisin Seiki Co Ltd 誘電体検出装置
JP2784396B2 (ja) * 1994-06-08 1998-08-06 セイコープレシジョン株式会社 静電容量形センサ
DE10297401T5 (de) * 2001-11-02 2004-09-16 Intier Automative Closures Inc. Kapazitive Mehrbereichs-Klemmschutzanordnung
FR2853058B1 (fr) * 2003-03-27 2005-05-13 Valeo Securite Habitacle Detection de presence par capteur capacitif

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2917732A (en) * 1957-03-22 1959-12-15 Librascope Inc Detector for indicating presence of objects
US3984757A (en) * 1973-01-05 1976-10-05 Gott Daniel A Proximity actuated power control variable as to sense and magnitude
WO1985002268A1 (fr) * 1983-11-09 1985-05-23 Consolidated Technology (Aust) Pty. Ltd. Detecteur d'objets
US5498995A (en) * 1993-03-17 1996-03-12 National Semiconductor Corporation Short circuit frequency shift circuit for switching regulators
US6366099B1 (en) * 1999-12-21 2002-04-02 Conrad Technologies, Inc. Differential capacitance sampler
US6417649B1 (en) * 2000-07-20 2002-07-09 Koninklijke Philips Electronics N.V. System and method for charging a capacitor using a constant frequency current waveform
FR2829317A1 (fr) * 2001-08-30 2003-03-07 Valeo Electronique Capteur de presence

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP1611417A2 *

Also Published As

Publication number Publication date
EP1611417A2 (fr) 2006-01-04
JP4558715B2 (ja) 2010-10-06
FR2853058A1 (fr) 2004-10-01
JP2006524807A (ja) 2006-11-02
FR2853058B1 (fr) 2005-05-13
WO2004085970A2 (fr) 2004-10-07

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