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EP0926646B8 - Optical smoke detector - Google Patents

Optical smoke detector Download PDF

Info

Publication number
EP0926646B8
EP0926646B8 EP97122894A EP97122894A EP0926646B8 EP 0926646 B8 EP0926646 B8 EP 0926646B8 EP 97122894 A EP97122894 A EP 97122894A EP 97122894 A EP97122894 A EP 97122894A EP 0926646 B8 EP0926646 B8 EP 0926646B8
Authority
EP
European Patent Office
Prior art keywords
smoke detector
light source
light
optical smoke
optical module
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.)
Expired - Lifetime
Application number
EP97122894A
Other languages
German (de)
French (fr)
Other versions
EP0926646B1 (en
EP0926646A1 (en
Inventor
Kurt Dr. Hess
Peter Kunz
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.)
Siemens AG
Original Assignee
Siemens Building Technologies AG
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
Priority to EP97122894A priority Critical patent/EP0926646B8/en
Priority to DK97122894T priority patent/DK0926646T3/en
Priority to PT97122894T priority patent/PT926646E/en
Priority to AT97122894T priority patent/ATE284603T1/en
Priority to ES97122894T priority patent/ES2221946T3/en
Application filed by Siemens Building Technologies AG filed Critical Siemens Building Technologies AG
Priority to DE59711621T priority patent/DE59711621D1/en
Publication of EP0926646A1 publication Critical patent/EP0926646A1/en
Publication of EP0926646B1 publication Critical patent/EP0926646B1/en
Application granted granted Critical
Publication of EP0926646B8 publication Critical patent/EP0926646B8/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • G08B17/107—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 for detecting light-scattering due to smoke
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Fire-Detection Mechanisms (AREA)

Abstract

The smoke detector has an alarm insert (2), an optical module (1) and an evaluation circuit, whereby the optical module has a light source (4), a measurement chamber (3) and a light receiver (5) connected to the evaluation circuit. The light source is designed to emit a beam in the visible wavelength range. The wavelength of the light emitted by the light source lies in the range of blue or red light and is pref. 460 or 660 nm.
EP97122894A 1997-12-24 1997-12-24 Optical smoke detector Expired - Lifetime EP0926646B8 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
DK97122894T DK0926646T3 (en) 1997-12-24 1997-12-24 Optical smoke detector
PT97122894T PT926646E (en) 1997-12-24 1997-12-24 OPTICAL SMOKE DETECTOR
AT97122894T ATE284603T1 (en) 1997-12-24 1997-12-24 OPTICAL SMOKE DETECTOR
ES97122894T ES2221946T3 (en) 1997-12-24 1997-12-24 OPTICAL SMOKE DETECTOR.
EP97122894A EP0926646B8 (en) 1997-12-24 1997-12-24 Optical smoke detector
DE59711621T DE59711621D1 (en) 1997-12-24 1997-12-24 Optical smoke detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP97122894A EP0926646B8 (en) 1997-12-24 1997-12-24 Optical smoke detector

Publications (3)

Publication Number Publication Date
EP0926646A1 EP0926646A1 (en) 1999-06-30
EP0926646B1 EP0926646B1 (en) 2004-05-12
EP0926646B8 true EP0926646B8 (en) 2004-09-22

Family

ID=8227883

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97122894A Expired - Lifetime EP0926646B8 (en) 1997-12-24 1997-12-24 Optical smoke detector

Country Status (6)

Country Link
EP (1) EP0926646B8 (en)
AT (1) ATE284603T1 (en)
DE (1) DE59711621D1 (en)
DK (1) DK0926646T3 (en)
ES (1) ES2221946T3 (en)
PT (1) PT926646E (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19902319B4 (en) * 1999-01-21 2011-06-30 Novar GmbH, Albstadt-Ebingen Zweigniederlassung Neuss, 41469 Scattered light fire detectors
EP1087352A1 (en) * 1999-09-22 2001-03-28 Siemens Building Technologies AG Optical smoke detector
ES2243027T3 (en) * 1999-11-19 2005-11-16 Siemens Building Technologies Ag FIRE DETECTOR.
CA2293830C (en) * 1999-12-31 2008-07-29 Digital Security Controls Ltd. Photoelectric smoke detector and chamber therefor
EP1376504B1 (en) 2002-06-20 2006-02-22 Siemens Schweiz AG Light scattering smoke detector
EP1376505B1 (en) 2002-06-20 2006-02-15 Siemens Schweiz AG Fire detector
DE102005010454A1 (en) 2005-03-08 2006-09-21 Robert Bosch Gmbh gas sensor
EP1732049A1 (en) 2005-06-10 2006-12-13 Siemens S.A.S. Fire or smoke detector with high false alarm rejection performance
DE102015117361A1 (en) 2014-10-13 2016-04-14 Universität Duisburg-Essen Device for the identification of aerosols
EP3029647B1 (en) 2014-12-04 2017-05-31 Siemens Schweiz AG Open scattered light smoke detector, particularly with a sidelooker LED
WO2018089660A1 (en) * 2016-11-11 2018-05-17 Carrier Corporation High sensitivity fiber optic based detection
WO2018089636A1 (en) 2016-11-11 2018-05-17 Carrier Corporation High sensitivity fiber optic based detection
EP3539103A1 (en) 2016-11-11 2019-09-18 Carrier Corporation High sensitivity fiber optic based detection
EP4300457A3 (en) 2016-11-11 2024-03-13 Carrier Corporation High sensitivity fiber optic based detection
US11145177B2 (en) 2016-11-11 2021-10-12 Carrier Corporation High sensitivity fiber optic based detection
US11506590B2 (en) 2018-09-28 2022-11-22 Siemens Schweiz Ag Scattered light smoke detector having a two-color LED, a photosensor, and a wavelength-selective polarizer connected upstream of the photosensor or connected downstream of the two-color LED, and suitable use of such a polarizer
CN111795951A (en) * 2020-05-28 2020-10-20 南京颗粒光电科技有限公司 Integrated sensor for thermal runaway detection of new energy battery and early warning method

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2951459C2 (en) * 1979-12-20 1984-03-29 Heimann Gmbh, 6200 Wiesbaden Optical arrangement for a smoke detector based on the light scattering principle
CH683464A5 (en) * 1991-09-06 1994-03-15 Cerberus Ag Optical smoke detector with active surveillance.
CH682428A5 (en) * 1991-09-13 1993-09-15 Cerberus Ag Optical smoke detector using light dispersion - has receiver providing signal representing received light polarised perpendicular to plane containing axes of source and receiver

Also Published As

Publication number Publication date
EP0926646B1 (en) 2004-05-12
PT926646E (en) 2004-10-29
EP0926646A1 (en) 1999-06-30
DE59711621D1 (en) 2004-06-17
ES2221946T3 (en) 2005-01-16
ATE284603T1 (en) 2004-05-15
DK0926646T3 (en) 2004-09-20

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