GB2367358B - Smoke detecting apparatus - Google Patents

Smoke detecting apparatus

Info

Publication number
GB2367358B
GB2367358B GB0131063A GB0131063A GB2367358B GB 2367358 B GB2367358 B GB 2367358B GB 0131063 A GB0131063 A GB 0131063A GB 0131063 A GB0131063 A GB 0131063A GB 2367358 B GB2367358 B GB 2367358B
Authority
GB
United Kingdom
Prior art keywords
detecting apparatus
smoke detecting
smoke
detecting
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
GB0131063A
Other versions
GB2367358A (en
GB0131063D0 (en
Inventor
Ichiro Endo
Yukio Yamauchi
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.)
Hochiki Corp
Original Assignee
Hochiki Corp
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 claimed from JP17396897A external-priority patent/JP3588535B2/en
Application filed by Hochiki Corp filed Critical Hochiki Corp
Publication of GB0131063D0 publication Critical patent/GB0131063D0/en
Publication of GB2367358A publication Critical patent/GB2367358A/en
Application granted granted Critical
Publication of GB2367358B publication Critical patent/GB2367358B/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
    • 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
    • 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)
  • Investigating Or Analysing Materials By Optical Means (AREA)
GB0131063A 1997-06-30 1998-06-29 Smoke detecting apparatus Expired - Lifetime GB2367358B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP17396897A JP3588535B2 (en) 1997-06-30 1997-06-30 Smoke detector
GB9814047A GB2326941B (en) 1997-06-30 1998-06-29 Smoke detecting apparatus

Publications (3)

Publication Number Publication Date
GB0131063D0 GB0131063D0 (en) 2002-02-13
GB2367358A GB2367358A (en) 2002-04-03
GB2367358B true GB2367358B (en) 2002-05-15

Family

ID=26313946

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0131063A Expired - Lifetime GB2367358B (en) 1997-06-30 1998-06-29 Smoke detecting apparatus

Country Status (1)

Country Link
GB (1) GB2367358B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1815516B (en) * 2005-02-04 2010-06-16 西门子（中国）有限公司 Smoke fog alarm
GB2430027A (en) 2005-09-09 2007-03-14 Kidde Ip Holdings Ltd Fibre bragg temperature sensors

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1560421A (en) * 1975-07-15 1980-02-06 Matsushita Electric Works Ltd Light scattering smoke detector
US4647786A (en) * 1983-01-11 1987-03-03 Cerberus Ag Photoelectric smoke detector and its application
GB2274333A (en) * 1993-01-07 1994-07-20 Hochiki Co Apparatus for detecting both smoke and fine particles

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1560421A (en) * 1975-07-15 1980-02-06 Matsushita Electric Works Ltd Light scattering smoke detector
US4647786A (en) * 1983-01-11 1987-03-03 Cerberus Ag Photoelectric smoke detector and its application
GB2274333A (en) * 1993-01-07 1994-07-20 Hochiki Co Apparatus for detecting both smoke and fine particles

Also Published As

Publication number Publication date
GB2367358A (en) 2002-04-03
GB0131063D0 (en) 2002-02-13

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Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Expiry date: 20180628