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EP0991042A3 - Signalling device and monitoring system - Google Patents

Signalling device and monitoring system Download PDF

Info

Publication number
EP0991042A3
EP0991042A3 EP99307216A EP99307216A EP0991042A3 EP 0991042 A3 EP0991042 A3 EP 0991042A3 EP 99307216 A EP99307216 A EP 99307216A EP 99307216 A EP99307216 A EP 99307216A EP 0991042 A3 EP0991042 A3 EP 0991042A3
Authority
EP
European Patent Office
Prior art keywords
fault
head
circuit
signalling
base
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Withdrawn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
EP99307216A
Other languages
German (de)
French (fr)
Other versions
EP0991042A2 (en
Inventor
Roger Dennis Payne
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.)
Apollo Fire Detectors Ltd
Original Assignee
Apollo Fire Detectors 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 Apollo Fire Detectors Ltd filed Critical Apollo Fire Detectors Ltd
Publication of EP0991042A2 publication Critical patent/EP0991042A2/en
Publication of EP0991042A3 publication Critical patent/EP0991042A3/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Withdrawn legal-status Critical Current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
    • G08B29/02—Monitoring continuously signalling or alarm systems
    • G08B29/04—Monitoring of the detection circuits
    • G08B29/043—Monitoring of the detection circuits of fire detection circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fire Alarms (AREA)
  • Alarm Systems (AREA)
  • Fire-Detection Mechanisms (AREA)

Abstract

A signalling device, such as a fire detecting device, has a head (2) which is removable from a base (1). The head has circuit means (4,5,6) for sensing and signalling a change in given condition. The base is connected to supply lines and has fault signalling means (3) for generating a fault signal due to head removal or some other device fault. As the same signal is generated in each case, the invention provides an economic, simple and reliable solution to the problem of signalling fault conditions. Preferably, the fault signalling means includes a first circuit (3) in the base (1) which responds to an output from a second circuit (7) in the head (2) so that, if the head is not fitted to the base, the first circuit (3) responds to the absence of said output from the second circuit (7) in order to apply the fault signal to the lines.
EP99307216A 1998-09-28 1999-09-21 Signalling device and monitoring system Withdrawn EP0991042A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9821059A GB2341964B (en) 1998-09-28 1998-09-28 Signalling device and monitoring system
GB9821059 1998-09-28

Publications (2)

Publication Number Publication Date
EP0991042A2 EP0991042A2 (en) 2000-04-05
EP0991042A3 true EP0991042A3 (en) 2001-01-10

Family

ID=10839579

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99307216A Withdrawn EP0991042A3 (en) 1998-09-28 1999-09-21 Signalling device and monitoring system

Country Status (3)

Country Link
EP (1) EP0991042A3 (en)
JP (1) JP2000113341A (en)
GB (1) GB2341964B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9906784D0 (en) * 1999-03-25 1999-05-19 Coventry University Enterprise Detector
KR20110059789A (en) * 2008-09-23 2011-06-03 코닌클리즈케 필립스 일렉트로닉스 엔.브이. Current limiting controlling for power supply, e.g. led driver, having automatic reset
DE202009015335U1 (en) 2009-11-09 2010-03-25 Job Lizenz Gmbh & Co. Kg alarm Devices
JP7187687B2 (en) * 2018-05-29 2022-12-12 アウトロニカ ファイア アンド セキュリティ エーエス hazard detector socket
CN111754744A (en) * 2020-06-24 2020-10-09 上海芯跳科技有限公司 Fire alarm control method and system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4369435A (en) * 1979-07-27 1983-01-18 Hochiki Kabushiki Kaisha Fire detector and fire alarm system having circuitry to detect removal of one or more detectors at a signal station
EP0253709A1 (en) * 1986-07-11 1988-01-20 FERCO INTERNATIONAL Usine de Ferrures de BÀ¢timent Société à responsabilité limitée Monitoring installation with detectors in the form of a loop
US5440293A (en) * 1992-05-29 1995-08-08 Pittway Corporation Detector supervision apparatus and method
GB2313690A (en) * 1996-05-29 1997-12-03 Rafiki Protection Limited Alarm monitoring system identifies line and detector head removal faults
US5798692A (en) * 1996-04-01 1998-08-25 Integrated Sensor Solutions Digital compensation circuit for calibration of sensors

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6346596A (en) * 1986-08-14 1988-02-27 ニツタン株式会社 Fire alarm equipment

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4369435A (en) * 1979-07-27 1983-01-18 Hochiki Kabushiki Kaisha Fire detector and fire alarm system having circuitry to detect removal of one or more detectors at a signal station
EP0253709A1 (en) * 1986-07-11 1988-01-20 FERCO INTERNATIONAL Usine de Ferrures de BÀ¢timent Société à responsabilité limitée Monitoring installation with detectors in the form of a loop
US5440293A (en) * 1992-05-29 1995-08-08 Pittway Corporation Detector supervision apparatus and method
US5798692A (en) * 1996-04-01 1998-08-25 Integrated Sensor Solutions Digital compensation circuit for calibration of sensors
GB2313690A (en) * 1996-05-29 1997-12-03 Rafiki Protection Limited Alarm monitoring system identifies line and detector head removal faults

Also Published As

Publication number Publication date
GB2341964A (en) 2000-03-29
JP2000113341A (en) 2000-04-21
EP0991042A2 (en) 2000-04-05
GB9821059D0 (en) 1998-11-18
GB2341964B (en) 2002-12-11

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