JPS57173732A - Optical temperature measuring method - Google Patents

Optical temperature measuring method

Info

Publication number
JPS57173732A
JPS57173732A JP5879081A JP5879081A JPS57173732A JP S57173732 A JPS57173732 A JP S57173732A JP 5879081 A JP5879081 A JP 5879081A JP 5879081 A JP5879081 A JP 5879081A JP S57173732 A JPS57173732 A JP S57173732A
Authority
JP
Japan
Prior art keywords
lights
light
wavelength
lambda2
lambda1
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
JP5879081A
Other languages
Japanese (ja)
Inventor
Masao Hirano
Mitsutaka Kato
Hirohiko Yasuda
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
Tateisi Electronics Co
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 Tateisi Electronics Co, Omron Tateisi Electronics Co filed Critical Tateisi Electronics Co
Priority to JP5879081A priority Critical patent/JPS57173732A/en
Publication of JPS57173732A publication Critical patent/JPS57173732A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
    • G01K11/12—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in colour, translucency or reflectance
    • G01K11/18—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in colour, translucency or reflectance of materials which change translucency

Abstract

PURPOSE:To prevent the occurrence of an error due to an unexpected loss in a transmission system, by a method wherein first and second lights, being different in wavelength, are radiated to a clear dielectric sensor, and a ratio between the modulated light outputs of the lights is found by the clear dielectric sensor to measure temperature. CONSTITUTION:Lights, emitted from emitters 3 and 4 which emit lights having distinct wavelengths lambda1 and lambda2, are caused to enter a clear dielectric sensor 1 through half-mirrors 5 and 6 and further through a light transfer device 7. The lights having the wavelengths lambda1 and lambda2, modulated due to temperature by a dielectric sensor 1, are sent to filters 11 and 12 from a light transfer device 8 through half-mirrors 9 and 10 to separate the light of the wavelength lambda1 from the light of the wavelength lambda2, and the separated lights are applied to their respective detectors 13 and 14. The outputs of the detectors 13 and 14 are applied to a computing circuit 15, and a ratio of a light signal, having the wavelength lambda1, to a light signal, havig the wavelength lambda2, is found to measure a temperature of a temperature measuring atmosphere 2.
JP5879081A 1981-04-18 1981-04-18 Optical temperature measuring method Pending JPS57173732A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5879081A JPS57173732A (en) 1981-04-18 1981-04-18 Optical temperature measuring method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5879081A JPS57173732A (en) 1981-04-18 1981-04-18 Optical temperature measuring method

Publications (1)

Publication Number Publication Date
JPS57173732A true JPS57173732A (en) 1982-10-26

Family

ID=13094361

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5879081A Pending JPS57173732A (en) 1981-04-18 1981-04-18 Optical temperature measuring method

Country Status (1)

Country Link
JP (1) JPS57173732A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4575259A (en) * 1983-10-18 1986-03-11 Consiglio Nazionale Delle Ricerche Optical fibre thermometer
JPS63205531A (en) * 1987-02-21 1988-08-25 Furukawa Electric Co Ltd:The Measuring method for temperature by optical fiber

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4575259A (en) * 1983-10-18 1986-03-11 Consiglio Nazionale Delle Ricerche Optical fibre thermometer
JPS63205531A (en) * 1987-02-21 1988-08-25 Furukawa Electric Co Ltd:The Measuring method for temperature by optical fiber

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