GB9005972D0 - Proximity sensor - Google Patents

Proximity sensor

Info

Publication number
GB9005972D0
GB9005972D0 GB909005972A GB9005972A GB9005972D0 GB 9005972 D0 GB9005972 D0 GB 9005972D0 GB 909005972 A GB909005972 A GB 909005972A GB 9005972 A GB9005972 A GB 9005972A GB 9005972 D0 GB9005972 D0 GB 9005972D0
Authority
GB
United Kingdom
Prior art keywords
proximity sensor
proximity
sensor
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.)
Withdrawn
Application number
GB909005972A
Other versions
GB2228574A (en
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.)
SIMPSON ROLAND B
Original Assignee
SIMPSON ROLAND B
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 SIMPSON ROLAND B filed Critical SIMPSON ROLAND B
Publication of GB9005972D0 publication Critical patent/GB9005972D0/en
Publication of GB2228574A publication Critical patent/GB2228574A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
    • G08B29/18—Prevention or correction of operating errors
    • G08B29/20—Calibration, including self-calibrating arrangements
    • G08B29/24—Self-calibration, e.g. compensating for environmental drift or ageing of components
    • 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
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
    • G08B29/18—Prevention or correction of operating errors
    • G08B29/185—Signal analysis techniques for reducing or preventing false alarms or for enhancing the reliability of the system

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Electronic Switches (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)
  • Push-Button Switches (AREA)
  • Geophysics And Detection Of Objects (AREA)
GB9005972A 1987-09-16 1990-03-14 Proximity sensor Withdrawn GB2228574A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPI442487 1987-09-16
PCT/AU1988/000363 WO1989002635A1 (en) 1987-09-16 1988-09-16 Proximity sensor

Publications (2)

Publication Number Publication Date
GB9005972D0 true GB9005972D0 (en) 1990-05-23
GB2228574A GB2228574A (en) 1990-08-29

Family

ID=3772460

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9005972A Withdrawn GB2228574A (en) 1987-09-16 1990-03-14 Proximity sensor

Country Status (3)

Country Link
AU (1) AU2481088A (en)
GB (1) GB2228574A (en)
WO (1) WO1989002635A1 (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2134930A1 (en) * 1993-11-18 1995-05-19 Charles Gerston Body detector
GB9325623D0 (en) * 1993-12-15 1994-02-16 Hutchings Michael J Particle detection apparatus
JPH0821741A (en) * 1994-07-08 1996-01-23 Seikosha Co Ltd Object sensor
GB9421114D0 (en) * 1994-10-19 1994-12-07 Elmi Benny B Motion detector
US5808552A (en) * 1996-11-25 1998-09-15 Hill-Rom, Inc. Patient detection system for a patient-support device
US6067019A (en) * 1996-11-25 2000-05-23 Hill-Rom, Inc. Bed exit detection apparatus
US6133837A (en) * 1999-03-05 2000-10-17 Hill-Rom, Inc. Patient position system and method for a support surface
GB2353097A (en) * 1999-07-23 2001-02-14 Hampden Smith David Eric Hidden electrical switch
GB2368126A (en) * 2000-10-19 2002-04-24 Hampden Smith David Eric Modular sensor switch
EP1357510A1 (en) * 2002-04-23 2003-10-29 Sony Ericsson Mobile Communications AB Pointing device enabling means, input device and portable device incorporting same
WO2003091934A2 (en) * 2002-04-23 2003-11-06 Sony Ericsson Mobile Communications Ab Pointing device enabling means, input device and portable device incorporating same
US7569762B2 (en) 2006-02-02 2009-08-04 Xpresense Llc RF-based dynamic remote control for audio effects devices or the like
EP2290391B1 (en) 2009-09-01 2020-12-16 G4S Monitoring Technologies Limited Proximity sensors
US20120169499A1 (en) * 2010-12-31 2012-07-05 Schneider Electric Buildings Ab Method and system for monitoring physical security via detecting potential intrusion
CN110120140B (en) * 2019-04-16 2020-12-29 电子科技大学 Combined type enclosure alarm method fusing capacitance disturbance signal and video signal

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50142057A (en) * 1974-05-01 1975-11-15
US4063447A (en) * 1977-03-14 1977-12-20 Honeywell, Inc. Bridge circuit with drift compensation
FR2443683A1 (en) * 1978-12-05 1980-07-04 Metafix SECURITY SYSTEM
US4602246A (en) * 1982-02-11 1986-07-22 Jensen Garold K Intruder detector apparatus
CA1250634A (en) * 1984-11-19 1989-02-28 Melvin C. Maki Simulated targets for detection systems
DE3526341A1 (en) * 1985-07-23 1987-01-29 Siemens Ag Method and device for accurately evaluating the measurement signals determined from a capacitive protective fence

Also Published As

Publication number Publication date
WO1989002635A1 (en) 1989-03-23
AU2481088A (en) 1989-04-17
GB2228574A (en) 1990-08-29

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)