JPH0542037B2 - - Google Patents

Info

Publication number
JPH0542037B2
JPH0542037B2 JP59037448A JP3744884A JPH0542037B2 JP H0542037 B2 JPH0542037 B2 JP H0542037B2 JP 59037448 A JP59037448 A JP 59037448A JP 3744884 A JP3744884 A JP 3744884A JP H0542037 B2 JPH0542037 B2 JP H0542037B2
Authority
JP
Japan
Prior art keywords
light
fire
light receiving
detection
light emitting
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
JP59037448A
Other languages
English (en)
Japanese (ja)
Other versions
JPS60181636A (ja
Inventor
Junichi Narumya
Hiroshi Pponma
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
Application filed by Hochiki Corp filed Critical Hochiki Corp
Priority to JP3744884A priority Critical patent/JPS60181636A/ja
Publication of JPS60181636A publication Critical patent/JPS60181636A/ja
Publication of JPH0542037B2 publication Critical patent/JPH0542037B2/ja
Granted 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)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Fire Alarms (AREA)
JP3744884A 1984-02-29 1984-02-29 光線式検出装置 Granted JPS60181636A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3744884A JPS60181636A (ja) 1984-02-29 1984-02-29 光線式検出装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3744884A JPS60181636A (ja) 1984-02-29 1984-02-29 光線式検出装置

Publications (2)

Publication Number Publication Date
JPS60181636A JPS60181636A (ja) 1985-09-17
JPH0542037B2 true JPH0542037B2 (h) 1993-06-25

Family

ID=12497778

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3744884A Granted JPS60181636A (ja) 1984-02-29 1984-02-29 光線式検出装置

Country Status (1)

Country Link
JP (1) JPS60181636A (h)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117686398B (zh) * 2023-11-28 2024-12-27 天津航空机电有限公司 一种基于偏振光的民机货舱烟雾浓度探测系统

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6316000Y2 (h) * 1980-05-26 1988-05-06
JPS5894091U (ja) * 1981-12-18 1983-06-25 能美防災工業株式会社 減光式煙感知器

Also Published As

Publication number Publication date
JPS60181636A (ja) 1985-09-17

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees