JPS6475913A - Rotary angle detecting apparatus - Google Patents

Rotary angle detecting apparatus

Info

Publication number
JPS6475913A
JPS6475913A JP23223487A JP23223487A JPS6475913A JP S6475913 A JPS6475913 A JP S6475913A JP 23223487 A JP23223487 A JP 23223487A JP 23223487 A JP23223487 A JP 23223487A JP S6475913 A JPS6475913 A JP S6475913A
Authority
JP
Japan
Prior art keywords
rotary
fibers
rotary angle
reflection
light
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
JP23223487A
Other languages
Japanese (ja)
Inventor
Kenzo Ishii
Kenichi Katagishi
Takeshi Kinoshita
Takashi Kokubu
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
Hitachi Automotive Systems Engineering Co Ltd
Original Assignee
Hitachi Automotive Engineering Co Ltd
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 Automotive Engineering Co Ltd, Hitachi Ltd filed Critical Hitachi Automotive Engineering Co Ltd
Priority to JP23223487A priority Critical patent/JPS6475913A/en
Publication of JPS6475913A publication Critical patent/JPS6475913A/en
Pending legal-status Critical Current

Links

Landscapes

  • Length Measuring Devices By Optical Means (AREA)
  • Optical Transform (AREA)

Abstract

PURPOSE:To simplify an attaching structure and to improve accuracy, by guiding light from a light emitting element to the rotary angle index parts of a rotary plate, repeating reflection and non-reflection or the like of the light corresponding to the rotary angle, detecting the repetition with a photodetector, and detecting the rotary angle. CONSTITUTION:Rotary index parts 4a and 4b are provided on the side surface or the flat surface of a rotary plate 4, which is rotated in synchronization with a rotary shaft 2 on the side to be detected. When light is received, reflection and non-reflection or high and low intensities are alternately repeated in correspondence with a rotary angle. Light emitting optical fibers 8a and 8b and light receiving optical fibers 8c and 8d are arranged so as to face the index parts 4a and 4b. The ends of the fibers 8a and 8b and the ends of the fibers 8c and 8d form pairs, respectively. A light emitting element 10 and a photodetector 11 are optically connected to the fibers 8a and 8b and 8c and 8d. In this way, the rotary angle can be detected only by facing the rotary plate 4 and the fibers 8a and 8b and 8c and 8d. The position alignment is made simple, detecting accuracy is enhanced, the attaching structure is simplified and the attaching space is rationalized. Thus a compact configuration is implemented.
JP23223487A 1987-09-18 1987-09-18 Rotary angle detecting apparatus Pending JPS6475913A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23223487A JPS6475913A (en) 1987-09-18 1987-09-18 Rotary angle detecting apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23223487A JPS6475913A (en) 1987-09-18 1987-09-18 Rotary angle detecting apparatus

Publications (1)

Publication Number Publication Date
JPS6475913A true JPS6475913A (en) 1989-03-22

Family

ID=16936076

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23223487A Pending JPS6475913A (en) 1987-09-18 1987-09-18 Rotary angle detecting apparatus

Country Status (1)

Country Link
JP (1) JPS6475913A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2686689A1 (en) * 1992-01-24 1993-07-30 Paris Sud Universite Position sensor and gauge for indicating the level of a liquid in a tank comprising such a sensor
JP2001124537A (en) * 1999-09-28 2001-05-11 Snap On Deutschland Holding Gmbh Rotational angle sensor for rotating member

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2686689A1 (en) * 1992-01-24 1993-07-30 Paris Sud Universite Position sensor and gauge for indicating the level of a liquid in a tank comprising such a sensor
JP2001124537A (en) * 1999-09-28 2001-05-11 Snap On Deutschland Holding Gmbh Rotational angle sensor for rotating member

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