JPS562537A - Smoke detector - Google Patents

Smoke detector

Info

Publication number
JPS562537A
JPS562537A JP7779379A JP7779379A JPS562537A JP S562537 A JPS562537 A JP S562537A JP 7779379 A JP7779379 A JP 7779379A JP 7779379 A JP7779379 A JP 7779379A JP S562537 A JPS562537 A JP S562537A
Authority
JP
Japan
Prior art keywords
light emitting
emitting body
light
photodetectors
scattering
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.)
Pending
Application number
JP7779379A
Other languages
English (en)
Inventor
Shuichiro Kishi
Katsunori Tanie
Masatake Ayusawa
Hiroshi Isotani
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP7779379A priority Critical patent/JPS562537A/ja
Publication of JPS562537A publication Critical patent/JPS562537A/ja
Pending 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
    • G01N21/532—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke with measurement of scattering and transmission

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)
JP7779379A 1979-06-20 1979-06-20 Smoke detector Pending JPS562537A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7779379A JPS562537A (en) 1979-06-20 1979-06-20 Smoke detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7779379A JPS562537A (en) 1979-06-20 1979-06-20 Smoke detector

Publications (1)

Publication Number Publication Date
JPS562537A true JPS562537A (en) 1981-01-12

Family

ID=13643863

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7779379A Pending JPS562537A (en) 1979-06-20 1979-06-20 Smoke detector

Country Status (1)

Country Link
JP (1) JPS562537A (ja)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60119000A (ja) * 1983-11-30 1985-06-26 松下電工株式会社 インテリジエンス型煙感知器
JPH0285994A (ja) * 1989-08-01 1990-03-27 Nohmi Bosai Ltd 光電式煙感知器の機能検査装置
JP2015191462A (ja) * 2014-03-28 2015-11-02 能美防災株式会社 煙感知器

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5258982A (en) * 1975-11-11 1977-05-14 Matsushita Electric Works Ltd Smoke detecting circuit for photoelectric smoke sensor
JPS545779A (en) * 1977-06-10 1979-01-17 American District Telegraph Co Optical particle detector

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5258982A (en) * 1975-11-11 1977-05-14 Matsushita Electric Works Ltd Smoke detecting circuit for photoelectric smoke sensor
JPS545779A (en) * 1977-06-10 1979-01-17 American District Telegraph Co Optical particle detector

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60119000A (ja) * 1983-11-30 1985-06-26 松下電工株式会社 インテリジエンス型煙感知器
JPH0563838B2 (ja) * 1983-11-30 1993-09-13 Matsushita Electric Works Ltd
JPH0285994A (ja) * 1989-08-01 1990-03-27 Nohmi Bosai Ltd 光電式煙感知器の機能検査装置
JPH0546000B2 (ja) * 1989-08-01 1993-07-12 Nohmi Bosai Ltd
JP2015191462A (ja) * 2014-03-28 2015-11-02 能美防災株式会社 煙感知器

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