JPS56106110A - Position detector - Google Patents

Position detector

Info

Publication number
JPS56106110A
JPS56106110A JP810680A JP810680A JPS56106110A JP S56106110 A JPS56106110 A JP S56106110A JP 810680 A JP810680 A JP 810680A JP 810680 A JP810680 A JP 810680A JP S56106110 A JPS56106110 A JP S56106110A
Authority
JP
Japan
Prior art keywords
light
measured
fiber
fiber coil
measuring
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
JP810680A
Other languages
Japanese (ja)
Other versions
JPS6224725B2 (en
Inventor
Ichiro Wada
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP810680A priority Critical patent/JPS56106110A/en
Publication of JPS56106110A publication Critical patent/JPS56106110A/en
Publication of JPS6224725B2 publication Critical patent/JPS6224725B2/ja
Granted 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
    • G01D5/28—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 with deflection of beams of light, e.g. for direct optical indication
    • G01D5/30—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 with deflection of beams of light, e.g. for direct optical indication the beams of light being detected by photocells

Abstract

PURPOSE:To detect the position of the material to be measured in the absence of power sources by returning the light leaked from optical fibers which are wound to a small radius of curvature to the original fiber by using an optical input movable body changing with the positions of the material to be measured. CONSTITUTION:The light from a light source 15 is branched 30 and is inputted to one end part of two fiber coils 14a, 14b. The light outputted from the other end part of the first fiber coil 14a is always the reference light of a fixed quantity of light because the opposing areas of the fiber coil 14a and surface mirror 18 are invariable. This reference light is supplied to a photodetector 31, by which a reference voltage E0 is obtained. On the other hand, the measuring light outputted from the 2nd fiber coil 14b changes because the opposing surfaces of the surface mirror 18 and the 2nd fiber coil 14b change with the positions of the material to be measured. This measuring light is supplied to the photodetector 34, by which the measuring voltage EX is obtained. From the difference between EX and E0, the position of the material to be measured is detected.
JP810680A 1980-01-26 1980-01-26 Position detector Granted JPS56106110A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP810680A JPS56106110A (en) 1980-01-26 1980-01-26 Position detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP810680A JPS56106110A (en) 1980-01-26 1980-01-26 Position detector

Publications (2)

Publication Number Publication Date
JPS56106110A true JPS56106110A (en) 1981-08-24
JPS6224725B2 JPS6224725B2 (en) 1987-05-29

Family

ID=11684039

Family Applications (1)

Application Number Title Priority Date Filing Date
JP810680A Granted JPS56106110A (en) 1980-01-26 1980-01-26 Position detector

Country Status (1)

Country Link
JP (1) JPS56106110A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0066964A2 (en) * 1981-05-18 1982-12-15 General Electric Company Optical fiber position sensor
JPS58150912A (en) * 1982-03-04 1983-09-07 Furukawa Electric Co Ltd:The Photodetector

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0066964A2 (en) * 1981-05-18 1982-12-15 General Electric Company Optical fiber position sensor
JPS58150912A (en) * 1982-03-04 1983-09-07 Furukawa Electric Co Ltd:The Photodetector

Also Published As

Publication number Publication date
JPS6224725B2 (en) 1987-05-29

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