GB2269665B - Optical beam smoke sensor - Google Patents

Optical beam smoke sensor

Info

Publication number
GB2269665B
GB2269665B GB9217042A GB9217042A GB2269665B GB 2269665 B GB2269665 B GB 2269665B GB 9217042 A GB9217042 A GB 9217042A GB 9217042 A GB9217042 A GB 9217042A GB 2269665 B GB2269665 B GB 2269665B
Authority
GB
United Kingdom
Prior art keywords
optical beam
smoke sensor
beam smoke
sensor
optical
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
GB9217042A
Other versions
GB9217042D0 (en
GB2269665A (en
Inventor
David Appleby
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB9217042A priority Critical patent/GB2269665B/en
Publication of GB9217042D0 publication Critical patent/GB9217042D0/en
Publication of GB2269665A publication Critical patent/GB2269665A/en
Application granted granted Critical
Publication of GB2269665B publication Critical patent/GB2269665B/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
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
GB9217042A 1992-08-11 1992-08-11 Optical beam smoke sensor Expired - Fee Related GB2269665B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9217042A GB2269665B (en) 1992-08-11 1992-08-11 Optical beam smoke sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9217042A GB2269665B (en) 1992-08-11 1992-08-11 Optical beam smoke sensor

Publications (3)

Publication Number Publication Date
GB9217042D0 GB9217042D0 (en) 1992-09-23
GB2269665A GB2269665A (en) 1994-02-16
GB2269665B true GB2269665B (en) 1996-05-22

Family

ID=10720184

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9217042A Expired - Fee Related GB2269665B (en) 1992-08-11 1992-08-11 Optical beam smoke sensor

Country Status (1)

Country Link
GB (1) GB2269665B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1174837B1 (en) * 1999-04-16 2009-03-18 University of Science and Technology of China Method of detecting fire with light section image to sense smoke
DE10011411C2 (en) 2000-03-09 2003-08-14 Bosch Gmbh Robert Imaging fire detector
DE10118913B4 (en) * 2001-04-19 2006-01-12 Robert Bosch Gmbh Scattered light smoke
GB2450132B (en) * 2007-06-13 2012-06-20 Hochiki Co Position specifiying system
EP3974813B1 (en) * 2020-09-28 2024-07-17 IMEC vzw Optical alignment compensation system for a gas detection system

Also Published As

Publication number Publication date
GB9217042D0 (en) 1992-09-23
GB2269665A (en) 1994-02-16

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20110811