GB2327752B - Optical scatter smoke sensor - Google Patents

Optical scatter smoke sensor

Info

Publication number
GB2327752B
GB2327752B GB9715728A GB9715728A GB2327752B GB 2327752 B GB2327752 B GB 2327752B GB 9715728 A GB9715728 A GB 9715728A GB 9715728 A GB9715728 A GB 9715728A GB 2327752 B GB2327752 B GB 2327752B
Authority
GB
United Kingdom
Prior art keywords
smoke sensor
optical scatter
scatter smoke
optical
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.)
Expired - Fee Related
Application number
GB9715728A
Other versions
GB2327752A (en
GB9715728D0 (en
Inventor
Stephen Henry Ellwood
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.)
RAFIKI PROT Ltd
Original Assignee
RAFIKI PROT 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 RAFIKI PROT Ltd filed Critical RAFIKI PROT Ltd
Priority to GB9715728A priority Critical patent/GB2327752B/en
Publication of GB9715728D0 publication Critical patent/GB9715728D0/en
Publication of GB2327752A publication Critical patent/GB2327752A/en
Application granted granted Critical
Publication of GB2327752B publication Critical patent/GB2327752B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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

  • 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)
GB9715728A 1997-07-26 1997-07-26 Optical scatter smoke sensor Expired - Fee Related GB2327752B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9715728A GB2327752B (en) 1997-07-26 1997-07-26 Optical scatter smoke sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9715728A GB2327752B (en) 1997-07-26 1997-07-26 Optical scatter smoke sensor

Publications (3)

Publication Number Publication Date
GB9715728D0 GB9715728D0 (en) 1997-10-01
GB2327752A GB2327752A (en) 1999-02-03
GB2327752B true GB2327752B (en) 2001-05-02

Family

ID=10816451

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9715728A Expired - Fee Related GB2327752B (en) 1997-07-26 1997-07-26 Optical scatter smoke sensor

Country Status (1)

Country Link
GB (1) GB2327752B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20070355A1 (en) * 2007-05-18 2008-11-19 Elkron Spa DEVICE AND METHOD TO DETECT SMOKE
CN102473339B (en) 2009-07-07 2016-01-27 爱克斯崔里斯科技有限公司 Room regulates
GB2487560B (en) * 2011-01-26 2013-09-04 Thorn Security Fire detector unit
FR3101468B1 (en) * 2019-09-30 2022-10-21 Commissariat Energie Atomique Smoke detector
US11127284B1 (en) * 2020-07-02 2021-09-21 Honeywell International Inc. Self-calibrating fire sensing device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2290376A (en) * 1994-05-31 1995-12-20 Hochiki Co Projected beam smoke detector
GB2296763A (en) * 1995-01-04 1996-07-10 Caradon Gent Limited Improvements in and relating to smoke detectors

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2290376A (en) * 1994-05-31 1995-12-20 Hochiki Co Projected beam smoke detector
GB2296763A (en) * 1995-01-04 1996-07-10 Caradon Gent Limited Improvements in and relating to smoke detectors

Also Published As

Publication number Publication date
GB2327752A (en) 1999-02-03
GB9715728D0 (en) 1997-10-01

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20140726