JPS5722541A - Light reduction type smoke sensor - Google Patents

Light reduction type smoke sensor

Info

Publication number
JPS5722541A
JPS5722541A JP9657580A JP9657580A JPS5722541A JP S5722541 A JPS5722541 A JP S5722541A JP 9657580 A JP9657580 A JP 9657580A JP 9657580 A JP9657580 A JP 9657580A JP S5722541 A JPS5722541 A JP S5722541A
Authority
JP
Japan
Prior art keywords
light
path length
smoke concentration
smoke
memory
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
JP9657580A
Other languages
English (en)
Other versions
JPS6229018B2 (ja
Inventor
Tsunehiko Araki
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 Electric Works Co Ltd
Original Assignee
Matsushita Electric Works 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 Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP9657580A priority Critical patent/JPS5722541A/ja
Publication of JPS5722541A publication Critical patent/JPS5722541A/ja
Publication of JPS6229018B2 publication Critical patent/JPS6229018B2/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)
JP9657580A 1980-07-15 1980-07-15 Light reduction type smoke sensor Granted JPS5722541A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9657580A JPS5722541A (en) 1980-07-15 1980-07-15 Light reduction type smoke sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9657580A JPS5722541A (en) 1980-07-15 1980-07-15 Light reduction type smoke sensor

Publications (2)

Publication Number Publication Date
JPS5722541A true JPS5722541A (en) 1982-02-05
JPS6229018B2 JPS6229018B2 (ja) 1987-06-24

Family

ID=14168774

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9657580A Granted JPS5722541A (en) 1980-07-15 1980-07-15 Light reduction type smoke sensor

Country Status (1)

Country Link
JP (1) JPS5722541A (ja)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58214997A (ja) * 1982-05-13 1983-12-14 ツエルベルス・アクチエンゲゼルシヤフト 煙検出器
JPS59202595A (ja) * 1983-04-30 1984-11-16 松下電工株式会社 火報システム
JPS60136899A (ja) * 1983-10-21 1985-07-20 マ−テイン　テレンス　コ−ル 汚染測定装置
US5772140A (en) * 1996-02-20 1998-06-30 Daiwa Seiko, Inc. Double-bearing fishing reel with fishing parallel-winding unit and drive force transmission mechanism
US5833155A (en) * 1995-11-20 1998-11-10 Daiwa Seiko, Inc. Double-bearing fishing reel with a level winding device
US5850979A (en) * 1994-08-23 1998-12-22 Daiwa Seiko, Inc. Fishing reel of double bearing type having improved balance and ergonomic properties

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58214997A (ja) * 1982-05-13 1983-12-14 ツエルベルス・アクチエンゲゼルシヤフト 煙検出器
JPH0441395B2 (ja) * 1982-05-13 1992-07-08 Cerberus Ag
JPS59202595A (ja) * 1983-04-30 1984-11-16 松下電工株式会社 火報システム
JPH0445880B2 (ja) * 1983-04-30 1992-07-28 Matsushita Electric Works Ltd
JPS60136899A (ja) * 1983-10-21 1985-07-20 マ−テイン　テレンス　コ−ル 汚染測定装置
US5850979A (en) * 1994-08-23 1998-12-22 Daiwa Seiko, Inc. Fishing reel of double bearing type having improved balance and ergonomic properties
US5833155A (en) * 1995-11-20 1998-11-10 Daiwa Seiko, Inc. Double-bearing fishing reel with a level winding device
US5772140A (en) * 1996-02-20 1998-06-30 Daiwa Seiko, Inc. Double-bearing fishing reel with fishing parallel-winding unit and drive force transmission mechanism

Also Published As

Publication number Publication date
JPS6229018B2 (ja) 1987-06-24

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