JPS57116213A - Angle-measuring device - Google Patents

Angle-measuring device

Info

Publication number
JPS57116213A
JPS57116213A JP278581A JP278581A JPS57116213A JP S57116213 A JPS57116213 A JP S57116213A JP 278581 A JP278581 A JP 278581A JP 278581 A JP278581 A JP 278581A JP S57116213 A JPS57116213 A JP S57116213A
Authority
JP
Japan
Prior art keywords
circuit
constitution
fiber bundle
line sensor
angle
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
JP278581A
Other languages
Japanese (ja)
Inventor
Nobuyuki Hoshika
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.)
Pentax Corp
Original Assignee
Asahi Kogaku Kogyo 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 Asahi Kogaku Kogyo Co Ltd filed Critical Asahi Kogaku Kogyo Co Ltd
Priority to JP278581A priority Critical patent/JPS57116213A/en
Publication of JPS57116213A publication Critical patent/JPS57116213A/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
    • G01D5/32—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 attenuation or whole or partial obturation of beams of light
    • G01D5/34—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 attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
    • G01D5/347—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 attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells using displacement encoding scales
    • G01D5/34776—Absolute encoders with analogue or digital scales
    • G01D5/34784—Absolute encoders with analogue or digital scales with only analogue scales or both analogue and incremental scales

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Optical Transform (AREA)

Abstract

PURPOSE:To simplify the constitution of the angle-measuring device by using a rotary disc whereon a spiral curve is drawn and a fixed line sensor. CONSTITUTION:On the rotary disc 2 is formed a scale pattern 1 wherein R= Ktheta+C (wherein, R is a distance from the center of rotation toward the direction of the radius vector, K and C are constants and theta is a rotational angle). Along the radius vector are arranged the line sensor 3 and a straight fiber bundle 21 the latter of which is arranged on the light-receiving part of the former, and the other end of the fiber bundle is bound in a circle. The light is emitted from a light source 22 to the fiber bundle 21, an output from the line sensor 3 driven by a drive circuit 31 is shaped of its waveform in a comparator circuit and sent to a microprocessor 32, and R is calculated from the output of the circuit 33 and a clock signal of the circuit 31 based on the fall and rise positions of the signal of the circuit 33, whereby theta is determined and indicated 34. Thereby, the constitution of the device is simplified.
JP278581A 1981-01-12 1981-01-12 Angle-measuring device Pending JPS57116213A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP278581A JPS57116213A (en) 1981-01-12 1981-01-12 Angle-measuring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP278581A JPS57116213A (en) 1981-01-12 1981-01-12 Angle-measuring device

Publications (1)

Publication Number Publication Date
JPS57116213A true JPS57116213A (en) 1982-07-20

Family

ID=11538995

Family Applications (1)

Application Number Title Priority Date Filing Date
JP278581A Pending JPS57116213A (en) 1981-01-12 1981-01-12 Angle-measuring device

Country Status (1)

Country Link
JP (1) JPS57116213A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60203815A (en) * 1984-03-29 1985-10-15 Usac Electronics Ind Co Ltd Encoder unit
JPS62204121A (en) * 1986-03-05 1987-09-08 Sanyo Denki Co Ltd Light transmission type encoder
JPS6361914A (en) * 1986-09-02 1988-03-18 Hamamatsu Photonics Kk Absolute encoder
US5121558A (en) * 1990-09-07 1992-06-16 Agc Industries, Inc. Method and apparatus for controlling and indicating angular rotation of a shaft
JPH0566126A (en) * 1991-09-09 1993-03-19 Tokai Rika Co Ltd Rotation angle detecting device
JPH06235646A (en) * 1993-07-27 1994-08-23 Harmonic Drive Syst Ind Co Ltd Rotary angle detector

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60203815A (en) * 1984-03-29 1985-10-15 Usac Electronics Ind Co Ltd Encoder unit
JPS62204121A (en) * 1986-03-05 1987-09-08 Sanyo Denki Co Ltd Light transmission type encoder
JPS6361914A (en) * 1986-09-02 1988-03-18 Hamamatsu Photonics Kk Absolute encoder
US5121558A (en) * 1990-09-07 1992-06-16 Agc Industries, Inc. Method and apparatus for controlling and indicating angular rotation of a shaft
JPH0566126A (en) * 1991-09-09 1993-03-19 Tokai Rika Co Ltd Rotation angle detecting device
JPH06235646A (en) * 1993-07-27 1994-08-23 Harmonic Drive Syst Ind Co Ltd Rotary angle detector

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