AU1625188A - Capacitance proximity sensor - Google Patents

Capacitance proximity sensor

Info

Publication number
AU1625188A
AU1625188A AU16251/88A AU1625188A AU1625188A AU 1625188 A AU1625188 A AU 1625188A AU 16251/88 A AU16251/88 A AU 16251/88A AU 1625188 A AU1625188 A AU 1625188A AU 1625188 A AU1625188 A AU 1625188A
Authority
AU
Australia
Prior art keywords
proximity sensor
capacitance proximity
capacitance
sensor
proximity
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.)
Abandoned
Application number
AU16251/88A
Inventor
Tom Bach
Paul Coleman
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.)
Coleman Electronic Designs Ltd
Original Assignee
Coleman Electronic Designs Ltd
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 Coleman Electronic Designs Ltd filed Critical Coleman Electronic Designs Ltd
Publication of AU1625188A publication Critical patent/AU1625188A/en
Abandoned legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/26—Electrical actuation by proximity of an intruder causing variation in capacitance or inductance of a circuit

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Burglar Alarm Systems (AREA)
AU16251/88A 1987-04-24 1988-04-22 Capacitance proximity sensor Abandoned AU1625188A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB08709828A GB2205950A (en) 1987-04-24 1987-04-24 Capacitive proximity sensor
GB8709828 1987-04-24

Publications (1)

Publication Number Publication Date
AU1625188A true AU1625188A (en) 1988-12-02

Family

ID=10616352

Family Applications (1)

Application Number Title Priority Date Filing Date
AU16251/88A Abandoned AU1625188A (en) 1987-04-24 1988-04-22 Capacitance proximity sensor

Country Status (3)

Country Link
AU (1) AU1625188A (en)
GB (1) GB2205950A (en)
WO (1) WO1988008595A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0646970A (en) * 1992-07-31 1994-02-22 Inax Corp Detector of seating
US5380983A (en) * 1993-07-12 1995-01-10 Black & Decker Inc. Electrical appliance having user proximity sensor
SE9303582D0 (en) * 1993-10-29 1993-10-29 Goeran Hansson Touch and theft protection for office equipment
FR2712404B1 (en) * 1993-11-09 1996-02-09 Sagelec Sarl Method and device for controlling an apparatus.
US5796183A (en) * 1996-01-31 1998-08-18 Nartron Corporation Capacitive responsive electronic switching circuit
FR2769094B1 (en) * 1997-09-26 1999-11-05 Presto Robinets Sa DEVICE FOR DETECTING THE FLOW OF A LIQUID
EP1198884A2 (en) * 1999-07-20 2002-04-24 Status Hi-tech Limited Capacitive switch
GB2353097A (en) * 1999-07-23 2001-02-14 Hampden Smith David Eric Hidden electrical switch
GB0018914D0 (en) * 2000-08-03 2000-09-20 Rees John C Electronic safety control
ES2253076B1 (en) * 2004-06-09 2007-03-16 Simave Seguridad, S.A. PROTECTION DEVICE AGAINST THE HANDLING OF AN OBJECT.

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1241728B (en) * 1963-09-10 1967-06-01 Siemens Ag Room protection device with an oscillator, the frequency of which can be detuned by the penetration of bodies into the field space of protection electrodes, the capacitance of which is included in the frequency-determining resonant circuit of the oscillator
DE2630683A1 (en) * 1976-07-08 1978-01-12 Rode Ing Johannes Object guarding alarm circuit - triggers warning signal through changes in sensing coil inductivity due to geometry variation
US4197530A (en) * 1977-02-09 1980-04-08 Laue Eric G Passive intrusion detection system
US4135185A (en) * 1977-10-07 1979-01-16 The United States Of America As Represented By The Secretary Of The Air Force RF loop intruder detection system
US4250829A (en) * 1978-05-30 1981-02-17 Brunswick Corporation Vapor detector for marine propulsion apparatus
EP0013484A1 (en) * 1978-12-08 1980-07-23 Lawrence Security Services Ltd Alarm system and method for detecting the movement of an object away from a predetermined position
FR2450464A1 (en) * 1979-03-02 1980-09-26 Anvar Proximity detector for signalling intrusion - has electrodes connected to capacity meter which operates alarm circuit
GB2040524A (en) * 1979-12-04 1980-08-28 Lawrence Security Services Ltd Alarm System
US4295132A (en) * 1980-07-23 1981-10-13 Gte Products Corporation Capacitance intrusion detection system
LU84369A1 (en) * 1982-09-08 1984-04-24 Roland Lienart ANTI-FORGETTING DEVICE
DE3315831A1 (en) * 1983-04-30 1984-10-31 Karl Jürgen 7505 Ettlingen Schwarz Method for monitoring a stored object and circuit arrangement therefor
FR2555782B1 (en) * 1983-11-25 1986-11-14 Commissariat Energie Atomique STATIC INTRUSION DETECTION DEVICE
ATE43277T1 (en) * 1984-04-09 1989-06-15 Elektroniktechnologie Get ELECTRONIC WARNING AND MONITORING DEVICE FOR HANDLING EQUIPMENT.
GB2199962A (en) * 1987-01-13 1988-07-20 Morphy Ltd Richards Electric iron

Also Published As

Publication number Publication date
GB8709828D0 (en) 1987-05-28
WO1988008595A1 (en) 1988-11-03
GB2205950A (en) 1988-12-21

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