JPS5269345A - Automatic detector of number and direction of revolution - Google Patents

Automatic detector of number and direction of revolution

Info

Publication number
JPS5269345A
JPS5269345A JP14394275A JP14394275A JPS5269345A JP S5269345 A JPS5269345 A JP S5269345A JP 14394275 A JP14394275 A JP 14394275A JP 14394275 A JP14394275 A JP 14394275A JP S5269345 A JPS5269345 A JP S5269345A
Authority
JP
Japan
Prior art keywords
revolution
automatic detector
notch
light
undergoing
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
JP14394275A
Other languages
Japanese (ja)
Inventor
Junshiro Sugihara
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP14394275A priority Critical patent/JPS5269345A/en
Publication of JPS5269345A publication Critical patent/JPS5269345A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P13/00—Indicating or recording presence, absence, or direction, of movement
    • G01P13/02—Indicating direction only, e.g. by weather vane
    • G01P13/04—Indicating positive or negative direction of a linear movement or clockwise or anti-clockwise direction of a rotational movement
    • G01P13/045—Indicating positive or negative direction of a linear movement or clockwise or anti-clockwise direction of a rotational movement with speed indication

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)

Abstract

PURPOSE:To simultaneously detect the number and direction of revolution of a light shielding disc by providing it with a notch undergoing a gradual change in dimension in the radial direction and disposing a light receiving element at a position where light passing through the notch can be received.
JP14394275A 1975-12-05 1975-12-05 Automatic detector of number and direction of revolution Pending JPS5269345A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14394275A JPS5269345A (en) 1975-12-05 1975-12-05 Automatic detector of number and direction of revolution

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14394275A JPS5269345A (en) 1975-12-05 1975-12-05 Automatic detector of number and direction of revolution

Publications (1)

Publication Number Publication Date
JPS5269345A true JPS5269345A (en) 1977-06-09

Family

ID=15350637

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14394275A Pending JPS5269345A (en) 1975-12-05 1975-12-05 Automatic detector of number and direction of revolution

Country Status (1)

Country Link
JP (1) JPS5269345A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4691793A (en) * 1984-12-13 1987-09-08 Horiba, Ltd. Apparatus for detecting amount of liquid nitrogen
US5376785A (en) * 1992-10-02 1994-12-27 Chin; Philip K. Optical displacement sensor utilizing optical diffusion

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4691793A (en) * 1984-12-13 1987-09-08 Horiba, Ltd. Apparatus for detecting amount of liquid nitrogen
US5376785A (en) * 1992-10-02 1994-12-27 Chin; Philip K. Optical displacement sensor utilizing optical diffusion

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