JPS55132921A - Sensor using optical fiber - Google Patents

Sensor using optical fiber

Info

Publication number
JPS55132921A
JPS55132921A JP4027279A JP4027279A JPS55132921A JP S55132921 A JPS55132921 A JP S55132921A JP 4027279 A JP4027279 A JP 4027279A JP 4027279 A JP4027279 A JP 4027279A JP S55132921 A JPS55132921 A JP S55132921A
Authority
JP
Japan
Prior art keywords
optical fiber
lens
directional coupler
optical fibers
optical
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
JP4027279A
Other languages
Japanese (ja)
Inventor
Shoichi Kurita
Keiki Kojima
Seiji Terai
Fumio Mita
Hideki Noda
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP4027279A priority Critical patent/JPS55132921A/en
Publication of JPS55132921A publication Critical patent/JPS55132921A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
    • G01D5/268—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light using optical fibres

Abstract

PURPOSE:To make possible the highly accurate remote measurement in the absence of power feed and non-dielectrically by using optical fibers for the transmission paths. CONSTITUTION:A light source 5 such as laser, lens 9 and photoelectric transducer 11 are connected via optical fibers 7, 8, 10 to a photo directional coupler 6. As a result of this, the light from the light source 5 subsequently passes through the optical fiber 7, photo directional coupler 6 and optical fiber 8, is emitted from the lens 9 and hits on a reflecting plate 15, thereby receiving the reflection proportional to the physical quantity measured by a sensor 14. It is again condensed into the optical fiber 8 by the lens 9 and is transmitted into the opposite direction. Thence, the optical path is changed by the photo directional coupler 6, is sent to the photoelectric transducer 11 through the optical fiber 10 and is further indicated in an indicating meter 13 after amplification. Hence, the highly accurate non-power-feed and non-dielectric remote measurement is made possible and the laying becomes easy owing to the flexibility of the optical fibers 7, 8, 10.
JP4027279A 1979-04-05 1979-04-05 Sensor using optical fiber Pending JPS55132921A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4027279A JPS55132921A (en) 1979-04-05 1979-04-05 Sensor using optical fiber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4027279A JPS55132921A (en) 1979-04-05 1979-04-05 Sensor using optical fiber

Publications (1)

Publication Number Publication Date
JPS55132921A true JPS55132921A (en) 1980-10-16

Family

ID=12575993

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4027279A Pending JPS55132921A (en) 1979-04-05 1979-04-05 Sensor using optical fiber

Country Status (1)

Country Link
JP (1) JPS55132921A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5773638U (en) * 1980-10-22 1982-05-07
JPS59501639A (en) * 1982-09-25 1984-09-13 レニシヨウ　パブリツク　リミテツド　カンパニ− displacement measuring device
JPS60155919A (en) * 1984-01-25 1985-08-16 Toyo Denso Co Ltd Apparatus for detecting rotary position
JPS60155920A (en) * 1984-01-25 1985-08-16 Toyo Denso Co Ltd Apparatus for detecting rotary position
JPS60129614U (en) * 1984-02-08 1985-08-30 日本電子機器株式会社 Throttle valve opening detection device for internal combustion engine
JPS61280574A (en) * 1985-06-05 1986-12-11 Mazda Motor Corp Apparatus for detecting rotation
JPS61281968A (en) * 1985-06-07 1986-12-12 Mazda Motor Corp Rotation detecting device
JPS62259024A (en) * 1986-03-20 1987-11-11 スミス　インダストリ−ズ　パブリツク　リミテツド　カンパニ− Optical converter
JPS6463830A (en) * 1987-09-02 1989-03-09 Chino Corp Optical temperature measuring apparatus
JP2009508088A (en) * 2005-06-29 2009-02-26 シュランベルジェ、ホールディング、リミテッド Turbine flow meter for measuring flow velocity and flow direction

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50113250A (en) * 1974-02-14 1975-09-05
JPS5258554A (en) * 1975-11-10 1977-05-14 Mitsubishi Heavy Ind Ltd Thermocouple emf-temperature signal converter
JPS5269653A (en) * 1975-12-09 1977-06-09 Canon Inc Detector for displacement of scanning beam
JPS5432343A (en) * 1977-08-17 1979-03-09 Hitachi Ltd Light reflecting object detector

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50113250A (en) * 1974-02-14 1975-09-05
JPS5258554A (en) * 1975-11-10 1977-05-14 Mitsubishi Heavy Ind Ltd Thermocouple emf-temperature signal converter
JPS5269653A (en) * 1975-12-09 1977-06-09 Canon Inc Detector for displacement of scanning beam
JPS5432343A (en) * 1977-08-17 1979-03-09 Hitachi Ltd Light reflecting object detector

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5773638U (en) * 1980-10-22 1982-05-07
JPS59501639A (en) * 1982-09-25 1984-09-13 レニシヨウ　パブリツク　リミテツド　カンパニ− displacement measuring device
JPS60155919A (en) * 1984-01-25 1985-08-16 Toyo Denso Co Ltd Apparatus for detecting rotary position
JPS60155920A (en) * 1984-01-25 1985-08-16 Toyo Denso Co Ltd Apparatus for detecting rotary position
JPS60129614U (en) * 1984-02-08 1985-08-30 日本電子機器株式会社 Throttle valve opening detection device for internal combustion engine
JPS61280574A (en) * 1985-06-05 1986-12-11 Mazda Motor Corp Apparatus for detecting rotation
JPS61281968A (en) * 1985-06-07 1986-12-12 Mazda Motor Corp Rotation detecting device
JPS62259024A (en) * 1986-03-20 1987-11-11 スミス　インダストリ−ズ　パブリツク　リミテツド　カンパニ− Optical converter
JPH0464565B2 (en) * 1986-03-20 1992-10-15 Smiths Industries Plc
JPS6463830A (en) * 1987-09-02 1989-03-09 Chino Corp Optical temperature measuring apparatus
JP2009508088A (en) * 2005-06-29 2009-02-26 シュランベルジェ、ホールディング、リミテッド Turbine flow meter for measuring flow velocity and flow direction
JP2011257425A (en) * 2005-06-29 2011-12-22 Schlumberger Holdings Ltd Turbine flowmeter for measurement of flow rate and flow direction

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