JPS5317777A - Transmission type smoke sensor - Google Patents

Transmission type smoke sensor

Info

Publication number
JPS5317777A
JPS5317777A JP9165976A JP9165976A JPS5317777A JP S5317777 A JPS5317777 A JP S5317777A JP 9165976 A JP9165976 A JP 9165976A JP 9165976 A JP9165976 A JP 9165976A JP S5317777 A JPS5317777 A JP S5317777A
Authority
JP
Japan
Prior art keywords
transmission type
smoke sensor
type smoke
smoke
fire
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.)
Granted
Application number
JP9165976A
Other languages
Japanese (ja)
Other versions
JPS6044720B2 (en
Inventor
Kiyomi Murai
Shuntaro Aoki
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.)
Omron Corp
Original Assignee
Omron Tateisi Electronics Co
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 Omron Tateisi Electronics Co filed Critical Omron Tateisi Electronics Co
Priority to JP9165976A priority Critical patent/JPS6044720B2/en
Publication of JPS5317777A publication Critical patent/JPS5317777A/en
Publication of JPS6044720B2 publication Critical patent/JPS6044720B2/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/47—Scattering, i.e. diffuse reflection
    • G01N21/49—Scattering, i.e. diffuse reflection within a body or fluid
    • G01N21/53—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke
    • G01N21/534—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke by measuring transmission alone, i.e. determining opacity

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

PURPOSE:To prevent the generation of false alarm such as of fire, etc. by identifying the mode of the output of photo detector which detect the decrease in the quantity of transmission light by smoke.
JP9165976A 1976-07-31 1976-07-31 Transparent smoke detector Expired JPS6044720B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9165976A JPS6044720B2 (en) 1976-07-31 1976-07-31 Transparent smoke detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9165976A JPS6044720B2 (en) 1976-07-31 1976-07-31 Transparent smoke detector

Publications (2)

Publication Number Publication Date
JPS5317777A true JPS5317777A (en) 1978-02-18
JPS6044720B2 JPS6044720B2 (en) 1985-10-04

Family

ID=14032615

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9165976A Expired JPS6044720B2 (en) 1976-07-31 1976-07-31 Transparent smoke detector

Country Status (1)

Country Link
JP (1) JPS6044720B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016071718A (en) * 2014-09-30 2016-05-09 能美防災株式会社 Optical alarm device
JP2016128989A (en) * 2015-01-09 2016-07-14 パナソニックＩｐマネジメント株式会社 Fire sensor

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61177541U (en) * 1985-04-25 1986-11-06

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016071718A (en) * 2014-09-30 2016-05-09 能美防災株式会社 Optical alarm device
JP2016128989A (en) * 2015-01-09 2016-07-14 パナソニックＩｐマネジメント株式会社 Fire sensor

Also Published As

Publication number Publication date
JPS6044720B2 (en) 1985-10-04

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