JPS6476199A - Fire detector - Google Patents

Fire detector

Info

Publication number
JPS6476199A
JPS6476199A JP23328987A JP23328987A JPS6476199A JP S6476199 A JPS6476199 A JP S6476199A JP 23328987 A JP23328987 A JP 23328987A JP 23328987 A JP23328987 A JP 23328987A JP S6476199 A JPS6476199 A JP S6476199A
Authority
JP
Japan
Prior art keywords
infrared ray
chopper
wavelength bands
film
incident light
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
JP23328987A
Other languages
Japanese (ja)
Other versions
JP2539845B2 (en
Inventor
Hideo Segawa
Kazunari Naya
Norihiro Kiuchi
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.)
Eneos Corp
Original Assignee
Nippon Mining 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 Nippon Mining Co Ltd filed Critical Nippon Mining Co Ltd
Priority to JP62233289A priority Critical patent/JP2539845B2/en
Publication of JPS6476199A publication Critical patent/JPS6476199A/en
Application granted granted Critical
Publication of JP2539845B2 publication Critical patent/JP2539845B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Fire-Detection Mechanisms (AREA)

Abstract

PURPOSE:To simplify the structure of a chopper and to improve an accuracy by rotating the chopper in which an infrared ray transmission film and an infrared ray absorbing film are alternately disposed and chopping an incident light and absorbing the infrared ray of respective wavelength bands. CONSTITUTION:One transparent disk is divided to the sectors of the same number as the wavelength bands desired to be detected and the infrared ray transmission film 10a and the infrared ray absorbing film 10b of the desired wavelength band are alternately formed on the respective sector areas to constitute the chopper 10. An infrared ray sensor 12 is disposed backward of the chopper 10, the chopper 10 is rotated at prescribed speed by a motor 11, the incident light is chopped and the infrared ray of the respective wavelength bands is detected. The output of this infrared ray sensor 12 is inputted to a controller 16 through an amplifier 14 and an A/D converted 13.
JP62233289A 1987-09-17 1987-09-17 Fire detector Expired - Fee Related JP2539845B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62233289A JP2539845B2 (en) 1987-09-17 1987-09-17 Fire detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62233289A JP2539845B2 (en) 1987-09-17 1987-09-17 Fire detector

Publications (2)

Publication Number Publication Date
JPS6476199A true JPS6476199A (en) 1989-03-22
JP2539845B2 JP2539845B2 (en) 1996-10-02

Family

ID=16952769

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62233289A Expired - Fee Related JP2539845B2 (en) 1987-09-17 1987-09-17 Fire detector

Country Status (1)

Country Link
JP (1) JP2539845B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109060679A (en) * 2018-09-07 2018-12-21 中国计量科学研究院 Ultraspectral transmittance etalon and visibility measurement device
CN109752348A (en) * 2018-09-07 2019-05-14 中国计量科学研究院 Transmittance etalon, transmittance measuring device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55163421A (en) * 1979-06-07 1980-12-19 Kureha Chem Ind Co Ltd Fire detector employing pyroelectric infrared ray detector
JPS586995A (en) * 1981-07-03 1983-01-14 Kawasaki Steel Corp Zinc-nickel alloy plated steel plate of superior adhesive strength after working

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55163421A (en) * 1979-06-07 1980-12-19 Kureha Chem Ind Co Ltd Fire detector employing pyroelectric infrared ray detector
JPS586995A (en) * 1981-07-03 1983-01-14 Kawasaki Steel Corp Zinc-nickel alloy plated steel plate of superior adhesive strength after working

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109060679A (en) * 2018-09-07 2018-12-21 中国计量科学研究院 Ultraspectral transmittance etalon and visibility measurement device
CN109752348A (en) * 2018-09-07 2019-05-14 中国计量科学研究院 Transmittance etalon, transmittance measuring device

Also Published As

Publication number Publication date
JP2539845B2 (en) 1996-10-02

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