GB2309079B - Light scattering type smoke sensor - Google Patents

Light scattering type smoke sensor

Info

Publication number
GB2309079B
GB2309079B GB9707433A GB9707433A GB2309079B GB 2309079 B GB2309079 B GB 2309079B GB 9707433 A GB9707433 A GB 9707433A GB 9707433 A GB9707433 A GB 9707433A GB 2309079 B GB2309079 B GB 2309079B
Authority
GB
United Kingdom
Prior art keywords
light scattering
smoke sensor
scattering type
type smoke
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 - Lifetime
Application number
GB9707433A
Other versions
GB2309079A (en
GB9707433D0 (en
Inventor
Tetsuya Nagashima
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 JP5221548A external-priority patent/JP3015633B2/en
Priority claimed from JP5221551A external-priority patent/JP2721788B2/en
Priority claimed from JP5221549A external-priority patent/JP3015634B2/en
Priority claimed from JP5221550A external-priority patent/JP3015635B2/en
Application filed by Hochiki Corp filed Critical Hochiki Corp
Priority claimed from GB9417669A external-priority patent/GB2281619B/en
Publication of GB9707433D0 publication Critical patent/GB9707433D0/en
Publication of GB2309079A publication Critical patent/GB2309079A/en
Application granted granted Critical
Publication of GB2309079B publication Critical patent/GB2309079B/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)
  • Fire-Detection Mechanisms (AREA)
GB9707433A 1993-09-07 1994-09-02 Light scattering type smoke sensor Expired - Lifetime GB2309079B (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP5221548A JP3015633B2 (en) 1993-09-07 1993-09-07 Scattered light smoke detector
JP5221551A JP2721788B2 (en) 1993-09-07 1993-09-07 Scattered light smoke detector
JP5221549A JP3015634B2 (en) 1993-09-07 1993-09-07 Scattered light smoke detector
JP5221550A JP3015635B2 (en) 1993-09-07 1993-09-07 Scattered light smoke detector
GB9417669A GB2281619B (en) 1993-09-07 1994-09-02 Light scattering type smoke sensor

Publications (3)

Publication Number Publication Date
GB9707433D0 GB9707433D0 (en) 1997-05-28
GB2309079A GB2309079A (en) 1997-07-16
GB2309079B true GB2309079B (en) 1997-10-22

Family

ID=27517259

Family Applications (2)

Application Number Title Priority Date Filing Date
GB9707433A Expired - Lifetime GB2309079B (en) 1993-09-07 1994-09-02 Light scattering type smoke sensor
GB9707434A Expired - Lifetime GB2309080B (en) 1993-09-07 1994-09-02 Light scattering type smoke sensor

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB9707434A Expired - Lifetime GB2309080B (en) 1993-09-07 1994-09-02 Light scattering type smoke sensor

Country Status (1)

Country Link
GB (2) GB2309079B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110930631A (en) * 2019-11-26 2020-03-27 福建好神奇电子科技有限公司 Photoelectric fire smoke alarm and smoke detection deviation compensation method thereof

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3370032B2 (en) * 1999-11-01 2003-01-27 ホーチキ株式会社 Photoelectric smoke detector and smoke detector assembly

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2277376A (en) * 1993-04-09 1994-10-26 Hochiki Co Light scattering type smoke detector

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4539556A (en) * 1983-04-15 1985-09-03 Pittway Corporation Combustion products detector with accelerated test

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2277376A (en) * 1993-04-09 1994-10-26 Hochiki Co Light scattering type smoke detector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110930631A (en) * 2019-11-26 2020-03-27 福建好神奇电子科技有限公司 Photoelectric fire smoke alarm and smoke detection deviation compensation method thereof

Also Published As

Publication number Publication date
GB2309080A (en) 1997-07-16
GB2309079A (en) 1997-07-16
GB9707434D0 (en) 1997-05-28
GB9707433D0 (en) 1997-05-28
GB2309080B (en) 1997-10-22

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Legal Events

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

Expiry date: 20140901