DE3468286D1 - Photoelectric smoke detector equipped with smoke detecting function test means - Google Patents

Photoelectric smoke detector equipped with smoke detecting function test means

Info

Publication number
DE3468286D1
DE3468286D1 DE8484102465T DE3468286T DE3468286D1 DE 3468286 D1 DE3468286 D1 DE 3468286D1 DE 8484102465 T DE8484102465 T DE 8484102465T DE 3468286 T DE3468286 T DE 3468286T DE 3468286 D1 DE3468286 D1 DE 3468286D1
Authority
DE
Germany
Prior art keywords
function test
smoke
detecting function
test means
detector equipped
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
Application number
DE8484102465T
Other languages
German (de)
English (en)
Inventor
Toshikazu C O Nohmi Bos Morita
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.)
Nohmi Bosai Ltd
Original Assignee
Nohmi Bosai Kogyo Co 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 Nohmi Bosai Kogyo Co Ltd filed Critical Nohmi Bosai Kogyo Co Ltd
Application granted granted Critical
Publication of DE3468286D1 publication Critical patent/DE3468286D1/de
Expired 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
    • G08B29/12—Checking intermittently signalling or alarm systems
    • G08B29/14—Checking intermittently signalling or alarm systems checking the detection circuits
    • G08B29/145—Checking intermittently signalling or alarm systems checking the detection circuits of fire detection circuits
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Fire Alarms (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
DE8484102465T 1983-03-21 1984-03-08 Photoelectric smoke detector equipped with smoke detecting function test means Expired DE3468286D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4668383A JPS59172094A (ja) 1983-03-21 1983-03-21 煙検出機能試験装置を備えた光電式煙感知器

Publications (1)

Publication Number Publication Date
DE3468286D1 true DE3468286D1 (en) 1988-02-04

Family

ID=12754171

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8484102465T Expired DE3468286D1 (en) 1983-03-21 1984-03-08 Photoelectric smoke detector equipped with smoke detecting function test means

Country Status (3)

Country Link
EP (1) EP0122432B1 (ja)
JP (1) JPS59172094A (ja)
DE (1) DE3468286D1 (ja)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3671120D1 (de) * 1985-07-29 1990-06-13 Siemens Ag Verfahren und vorrichtung zur betriebsmaessigen ueberwachung optischer rauchmelder.
GB2326474A (en) * 1994-09-27 1998-12-23 Hochiki Co Projected beam type smoke detector and receiving unit
US5751216A (en) * 1994-09-27 1998-05-12 Hochiki Kabushiki Kaisha Projected beam-type smoke detector and receiving unit
US7522037B2 (en) 2002-10-10 2009-04-21 Valery Vasilievich Ovchinnikov Method for forming and transmitting signals

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5612707Y2 (ja) * 1972-09-16 1981-03-24
JPS507583A (ja) * 1973-05-17 1975-01-25
JPS5377199A (en) * 1976-12-20 1978-07-08 Matsushita Electric Ind Co Ltd Fire detector
US4306230A (en) * 1979-12-10 1981-12-15 Honeywell Inc. Self-checking photoelectric smoke detector
JPS57102873U (ja) * 1980-12-15 1982-06-24
JPS57172495A (en) * 1981-04-15 1982-10-23 Nittan Co Ltd Select test circuit for fire sensor, etc.
US4374329A (en) * 1981-04-24 1983-02-15 Pittway Corporation Smoke detector with test apparatus
DE3123451A1 (de) * 1981-06-12 1982-12-30 Siemens AG, 1000 Berlin und 8000 München Verfahren und anordnung zur stoerungserkennung in gefahren-, insbesondere brandmeldeanlagen

Also Published As

Publication number Publication date
JPS59172094A (ja) 1984-09-28
JPH0441396B2 (ja) 1992-07-08
EP0122432B1 (en) 1987-12-23
EP0122432A1 (en) 1984-10-24

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee