JPS5772064A - Detector for speed and number of rotations - Google Patents

Detector for speed and number of rotations

Info

Publication number
JPS5772064A
JPS5772064A JP14869280A JP14869280A JPS5772064A JP S5772064 A JPS5772064 A JP S5772064A JP 14869280 A JP14869280 A JP 14869280A JP 14869280 A JP14869280 A JP 14869280A JP S5772064 A JPS5772064 A JP S5772064A
Authority
JP
Japan
Prior art keywords
speed
rotary disc
slits
light
light emitter
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
JP14869280A
Other languages
Japanese (ja)
Inventor
Hiroaki Ikeda
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP14869280A priority Critical patent/JPS5772064A/en
Publication of JPS5772064A publication Critical patent/JPS5772064A/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
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
    • G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
    • G01P3/486—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals delivered by photo-electric detectors

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Linear Or Angular Velocity Measurement And Their Indicating Devices (AREA)
  • Optical Transform (AREA)

Abstract

PURPOSE:To enable to obtain a speed information at the same output level, irrespective of a rotation speed, by a method wherein a rotary disc, having slits, turns in proportion to a speed of an object to be measured, and a light emitter and a light receiver are positioned facing oppositely to each other with the rotary disc therebetween. CONSTITUTION:A rotary disc 2, attached to a rotary shaft 1 turning in proportion to a speed of an axle, acting as an object to measured, has slits 2a-2n being formed on a circumference centering around the rotary shaft 1. A light emitter 3, provided with a luminous diode 301, is located at one surface side of the rotary disc, and a light receiver 5, equipped with a photodiode 502 is situated at the other surface side of the rotary disc 2. A light emitted from the light emitter 3 is intermittently received via the slits 2a-2n at a frequency proportional to a car speed by the light receiver 5, and an output pulse, proportional to the car speed, is obtained at output terminals 6a and 6b. This eliminates the need for a wave-form shaping circuit at the input side of a device for transmitting a speed information. While reducing the size of the detector for the number of rotations as well as lightening the weight thereof.
JP14869280A 1980-10-22 1980-10-22 Detector for speed and number of rotations Pending JPS5772064A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14869280A JPS5772064A (en) 1980-10-22 1980-10-22 Detector for speed and number of rotations

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14869280A JPS5772064A (en) 1980-10-22 1980-10-22 Detector for speed and number of rotations

Publications (1)

Publication Number Publication Date
JPS5772064A true JPS5772064A (en) 1982-05-06

Family

ID=15458459

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14869280A Pending JPS5772064A (en) 1980-10-22 1980-10-22 Detector for speed and number of rotations

Country Status (1)

Country Link
JP (1) JPS5772064A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4600842A (en) * 1982-01-15 1986-07-15 Boschung Mecatronic Ag Snowfall measuring method and apparatus
JP2015141078A (en) * 2014-01-28 2015-08-03 トヨタ自動車株式会社 Measuring device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4600842A (en) * 1982-01-15 1986-07-15 Boschung Mecatronic Ag Snowfall measuring method and apparatus
JP2015141078A (en) * 2014-01-28 2015-08-03 トヨタ自動車株式会社 Measuring device

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