JPS56133607A - Rotation-angle detector - Google Patents

Rotation-angle detector

Info

Publication number
JPS56133607A
JPS56133607A JP3613980A JP3613980A JPS56133607A JP S56133607 A JPS56133607 A JP S56133607A JP 3613980 A JP3613980 A JP 3613980A JP 3613980 A JP3613980 A JP 3613980A JP S56133607 A JPS56133607 A JP S56133607A
Authority
JP
Japan
Prior art keywords
rotary disk
rotation
angle detector
light
pickup
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
JP3613980A
Other languages
Japanese (ja)
Inventor
Kazuhiko Kawakami
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP3613980A priority Critical patent/JPS56133607A/en
Publication of JPS56133607A publication Critical patent/JPS56133607A/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
    • G01D5/34707—Scales; Discs, e.g. fixation, fabrication, compensation
    • G01D5/34715—Scale reading or illumination devices

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Transform (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)

Abstract

PURPOSE:To obtain a miniature rotation-angle detector which is not influenced by various magnetic fluxes, by providing the rotation-angle detector having a photoelectric pickup incorporated in a distributor. CONSTITUTION:Shaft 1 which synchronizes with an engine and rotates at a rotational frequency a half the frequency of the engine rotates rotary disk 8 which has a window for angle detection. The rotation of rotary disk 8 is detected by photoelectric pickup 13 consisting of a light emission diode and photodetection diode. Pickup 13 is provided with slits for passing light, having a shape similar to that of the window of rotary disk 8, at the light emission diode side and photodetection diode side, thereby preventing light leaking from adjacent windows of rotary disk and the disorder of a detection signal due to the difference in light reflection coefficient in the plate thickness direction of the windows of rotary disk 8.
JP3613980A 1980-03-24 1980-03-24 Rotation-angle detector Pending JPS56133607A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3613980A JPS56133607A (en) 1980-03-24 1980-03-24 Rotation-angle detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3613980A JPS56133607A (en) 1980-03-24 1980-03-24 Rotation-angle detector

Publications (1)

Publication Number Publication Date
JPS56133607A true JPS56133607A (en) 1981-10-19

Family

ID=12461447

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3613980A Pending JPS56133607A (en) 1980-03-24 1980-03-24 Rotation-angle detector

Country Status (1)

Country Link
JP (1) JPS56133607A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58170860A (en) * 1982-03-31 1983-10-07 Mitsubishi Electric Corp Ignition device of internal-combustion engine
JPS58152572U (en) * 1982-04-06 1983-10-12 三菱電機株式会社 Engine ignition signal generator
JPS58169512U (en) * 1982-05-08 1983-11-12 三菱電機株式会社 Crank angle detection sensor for internal combustion engines
JPS5967585U (en) * 1982-10-28 1984-05-08 三菱電機株式会社 Photoelectric signal generator
JPS60315A (en) * 1983-03-25 1985-01-05 Yokogawa Hewlett Packard Ltd Measuring device of phase
JPS60147572A (en) * 1984-01-13 1985-08-03 Wako Technical Kk Ignition signal generating device for internal- combustion engine
US5113693A (en) * 1989-09-22 1992-05-19 Mitsubishi Denki Kabushiki Kaisha Rotational position detecting apparatus with a signal generator

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58170860A (en) * 1982-03-31 1983-10-07 Mitsubishi Electric Corp Ignition device of internal-combustion engine
JPS58152572U (en) * 1982-04-06 1983-10-12 三菱電機株式会社 Engine ignition signal generator
JPS58169512U (en) * 1982-05-08 1983-11-12 三菱電機株式会社 Crank angle detection sensor for internal combustion engines
JPH0130622Y2 (en) * 1982-05-08 1989-09-19
JPS5967585U (en) * 1982-10-28 1984-05-08 三菱電機株式会社 Photoelectric signal generator
JPS6224794Y2 (en) * 1982-10-28 1987-06-24
JPS60315A (en) * 1983-03-25 1985-01-05 Yokogawa Hewlett Packard Ltd Measuring device of phase
JPS60147572A (en) * 1984-01-13 1985-08-03 Wako Technical Kk Ignition signal generating device for internal- combustion engine
US5113693A (en) * 1989-09-22 1992-05-19 Mitsubishi Denki Kabushiki Kaisha Rotational position detecting apparatus with a signal generator

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