JPS56111420A - Optical position detector - Google Patents

Optical position detector

Info

Publication number
JPS56111420A
JPS56111420A JP1434080A JP1434080A JPS56111420A JP S56111420 A JPS56111420 A JP S56111420A JP 1434080 A JP1434080 A JP 1434080A JP 1434080 A JP1434080 A JP 1434080A JP S56111420 A JPS56111420 A JP S56111420A
Authority
JP
Japan
Prior art keywords
reflective mirror
indication piece
rotating
photodetector
constitution
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
JP1434080A
Other languages
Japanese (ja)
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 JP1434080A priority Critical patent/JPS56111420A/en
Publication of JPS56111420A publication Critical patent/JPS56111420A/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
    • G01D5/28—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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Optical Transform (AREA)
  • Control Of Position Or Direction (AREA)

Abstract

PURPOSE:To perform position detection with high precision by detecting optically the position of a moving body, moving in proportion to a process variable, by using optical fibers. CONSTITUTION:Optical fiber 14 having projector 19 and projection window 15 and optical fiber 17 having photodetection wondow 18, photodetector 20 and measuring circuit 21 are provided. Inside of indication piece 11 rotating along the periphery of a measuring instrument, reflective mirror M1 is fitted. Body 12 rotating at a prescribed speed has reflective mirror M0 fitted to both its surfaces. In this constitution, light form projector 19 is reflected by reflective mirror M1 of indication piece 11 and, when reflective mirror M0 opposes to point Z, photodetected by photodetector 20, so that circuit 21 starts counting operation in response to the 1st pulse signal. Rotating body 12 further rotates and reaches indication piece 11 again, thereby stopping the counting operation in response to the 2nd pulse signal. The counting value during this period corresponds to the distance of rotation of indication piece 11. Consequently, the measurement value can immediately be known by bearing the relation between the count value and measurement value previously.
JP1434080A 1980-02-08 1980-02-08 Optical position detector Pending JPS56111420A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1434080A JPS56111420A (en) 1980-02-08 1980-02-08 Optical position detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1434080A JPS56111420A (en) 1980-02-08 1980-02-08 Optical position detector

Publications (1)

Publication Number Publication Date
JPS56111420A true JPS56111420A (en) 1981-09-03

Family

ID=11858329

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1434080A Pending JPS56111420A (en) 1980-02-08 1980-02-08 Optical position detector

Country Status (1)

Country Link
JP (1) JPS56111420A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS529393A (en) * 1975-07-11 1977-01-24 Hitachi Ltd Display panel mounting unit
JPS529392A (en) * 1975-07-11 1977-01-24 Hitachi Ltd Driving method of display panel

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS529393A (en) * 1975-07-11 1977-01-24 Hitachi Ltd Display panel mounting unit
JPS529392A (en) * 1975-07-11 1977-01-24 Hitachi Ltd Driving method of display panel

Similar Documents

Publication Publication Date Title
US4240069A (en) Angle coder with variable input angle
JPS55154439A (en) Method and apparatus for measuring moisture content of paper
JPS56111419A (en) Optical position detector
JPS56111420A (en) Optical position detector
JPS56111421A (en) Optical position detector
JPS5796203A (en) Contactless displacement detector employing optical fiber
DE69421992D1 (en) Device for optically measuring the speed of rotation of an object
KR0119602Y1 (en) Flow meter using optical sensor
FR2425065A1 (en) Optical system for measuring surface reflectance properties - has optical elements aligned close to surface normal (OE 15.10.79)
JPS5760239A (en) Pressure sensor
JPS5710456A (en) Measuring methd for spin of golf ball
JPS5644821A (en) Measuring method of optical lens focal distance and measuring system therefor
JPS5733306A (en) Surface roughness measuring device
JPS56114705A (en) Gap measuring device
SU650007A1 (en) Optical shaft angular speed sensor
FR2455727A1 (en) Moving assembly position measurement - using optical sensor with electronic circuit determining time periods for microprocessor
SU590598A1 (en) Device for contacless measuring of transparent plate thickness
JPS55125547A (en) Light detecting unit
JPS5910573Y2 (en) Pulse generation mechanism
SU1714515A1 (en) Fiberoptic gyroscope
SU551501A1 (en) Measuring head of a photoelectronic device for automatic contactless control of the size of a fiberglass section
JPS547361A (en) Detecting method of broken position of optical fibers
SU1552007A1 (en) Device for determining coordinates of light spot
SU1397567A1 (en) Apparatus for measuring linear density of fibrous product
SU775696A1 (en) Photoelectric sensor of tape movement speed