EP1777670A3 - Smoke detector - Google Patents

Smoke detector Download PDF

Info

Publication number
EP1777670A3
EP1777670A3 EP06020998A EP06020998A EP1777670A3 EP 1777670 A3 EP1777670 A3 EP 1777670A3 EP 06020998 A EP06020998 A EP 06020998A EP 06020998 A EP06020998 A EP 06020998A EP 1777670 A3 EP1777670 A3 EP 1777670A3
Authority
EP
European Patent Office
Prior art keywords
clock frequency
smoke detector
recognises
reflector
alarm
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.)
Granted
Application number
EP06020998A
Other languages
German (de)
French (fr)
Other versions
EP1777670B1 (en
EP1777670A2 (en
Inventor
Hans-Erich Sen Gubela
Hans-Erich Jun. Gubela
Markus Huber
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.)
IMOS Gubela GmbH
Original Assignee
IMOS Gubela 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 IMOS Gubela GmbH filed Critical IMOS Gubela GmbH
Publication of EP1777670A2 publication Critical patent/EP1777670A2/en
Publication of EP1777670A3 publication Critical patent/EP1777670A3/en
Application granted granted Critical
Publication of EP1777670B1 publication Critical patent/EP1777670B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • G08B17/103—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using a light emitting and receiving device
    • 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
    • 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
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • G08B17/11—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using an ionisation chamber for detecting smoke or gas
    • G08B17/113—Constructional details

Abstract

A smoke detection procedure transmits (2) a fixed clock frequency intensity modulated light signal (6) via a reflector (5) to a receiver (3) that recognises the reflected signal (7) by its clock frequency and processes it to compare its amplitude with the transmitted value and trigger an alarm or make maintenance cycle adjustments.
EP06020998A 2005-10-19 2006-10-06 Smoke detector Not-in-force EP1777670B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005050451A DE102005050451A1 (en) 2005-10-19 2005-10-19 smoke detector

Publications (3)

Publication Number Publication Date
EP1777670A2 EP1777670A2 (en) 2007-04-25
EP1777670A3 true EP1777670A3 (en) 2007-07-25
EP1777670B1 EP1777670B1 (en) 2009-01-21

Family

ID=37680613

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06020998A Not-in-force EP1777670B1 (en) 2005-10-19 2006-10-06 Smoke detector

Country Status (3)

Country Link
EP (1) EP1777670B1 (en)
AT (1) ATE421742T1 (en)
DE (2) DE102005050451A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3889579A1 (en) 2020-03-30 2021-10-06 Carrier Corporation Cleaning system for a smoke detector
US11900791B2 (en) * 2022-04-26 2024-02-13 Honeywell International Inc. Self-testing fire sensing device for confirming a fire

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1261024B (en) * 1961-10-13 1968-02-08 Licentia Gmbh Photoelectric barrier
US3641549A (en) * 1970-06-25 1972-02-08 Sanders Associates Inc Electro-optical perimeter intrusion alarm
US3885162A (en) * 1973-10-31 1975-05-20 Contraves Goerz Corp Optical measuring apparatus
EP0631263A1 (en) * 1993-06-23 1994-12-28 HEKATRON GmbH Circuit arrangement of an optical detector for environmental monitoring and indication of a disturbing medium
DE4432114C1 (en) * 1994-09-09 1995-06-08 Hella Kg Hueck & Co Stray light suppression circuit for light barrier arrangement
JPH07239958A (en) * 1994-02-28 1995-09-12 Ito Seisakusho:Kk Passenger confirming device
JP2001034863A (en) * 1999-07-22 2001-02-09 Sumitomo Densetsu Corp Air blow-type fire alarm system
US20040063154A1 (en) * 2002-08-23 2004-04-01 Booth David K. Rapidly responding, false detection immune alarm signal producing smoke detector
DE10346741B3 (en) * 2003-10-08 2005-03-24 Mechaless Systems Gmbh Determining and/or evaluating differential optical signal involves regulating intensity radiated into measurement arrangement with control parameter generated from incoming light intensity at receiver measured relative to phase position

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1261024B (en) * 1961-10-13 1968-02-08 Licentia Gmbh Photoelectric barrier
US3641549A (en) * 1970-06-25 1972-02-08 Sanders Associates Inc Electro-optical perimeter intrusion alarm
US3885162A (en) * 1973-10-31 1975-05-20 Contraves Goerz Corp Optical measuring apparatus
EP0631263A1 (en) * 1993-06-23 1994-12-28 HEKATRON GmbH Circuit arrangement of an optical detector for environmental monitoring and indication of a disturbing medium
JPH07239958A (en) * 1994-02-28 1995-09-12 Ito Seisakusho:Kk Passenger confirming device
DE4432114C1 (en) * 1994-09-09 1995-06-08 Hella Kg Hueck & Co Stray light suppression circuit for light barrier arrangement
JP2001034863A (en) * 1999-07-22 2001-02-09 Sumitomo Densetsu Corp Air blow-type fire alarm system
US20040063154A1 (en) * 2002-08-23 2004-04-01 Booth David K. Rapidly responding, false detection immune alarm signal producing smoke detector
DE10346741B3 (en) * 2003-10-08 2005-03-24 Mechaless Systems Gmbh Determining and/or evaluating differential optical signal involves regulating intensity radiated into measurement arrangement with control parameter generated from incoming light intensity at receiver measured relative to phase position

Also Published As

Publication number Publication date
EP1777670B1 (en) 2009-01-21
DE502006002695D1 (en) 2009-03-12
EP1777670A2 (en) 2007-04-25
ATE421742T1 (en) 2009-02-15
DE102005050451A1 (en) 2007-05-03

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