JPS5766323A - Device for measuring vibration - Google Patents

Device for measuring vibration

Info

Publication number
JPS5766323A
JPS5766323A JP14148980A JP14148980A JPS5766323A JP S5766323 A JPS5766323 A JP S5766323A JP 14148980 A JP14148980 A JP 14148980A JP 14148980 A JP14148980 A JP 14148980A JP S5766323 A JPS5766323 A JP S5766323A
Authority
JP
Japan
Prior art keywords
optical fiber
light
mirror
vibration
weight
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
JP14148980A
Other languages
Japanese (ja)
Inventor
Shuichi Tai
Kazuo Hisama
Toshio Aranishi
Koichi Hamanaka
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 JP14148980A priority Critical patent/JPS5766323A/en
Publication of JPS5766323A publication Critical patent/JPS5766323A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H9/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
    • G01H9/004—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means using fibre optic sensors
    • G01H9/006—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means using fibre optic sensors the vibrations causing a variation in the relative position of the end of a fibre and another element

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Abstract

PURPOSE:To measure vibration purely optically in an electric equipment without providing an electronic circuit in the electric equipment. CONSTITUTION:The light from a light transmitter 10 passes optical fiber 12, a beam splitter 11, and optical fiber 13, is converted into a parallel beam by a distributed index lens 15, and enters into a mirror 16. The mirror 16 is fixed to a weight 17 which is attached to a plate spring 19. The weight 17 and the plate spring 19 constitutes an inertia system. Rubber 18 attached to both sides of the plate spring 19 works as a braking damper. When the vibration is excited in a vibrator 21, the weight is inclined in response to the vibration. Therefore the amount of light, which is reflected by the mirror 16 and inputted to the optical fiber 13 via a distributed index lens 15, is varied. The reflected light passes the optical fiber 13, the beam splitter 11, and the optical fiber 14. Then it is led to a light receiver 22 and converted into an electrical signal.
JP14148980A 1980-10-09 1980-10-09 Device for measuring vibration Pending JPS5766323A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14148980A JPS5766323A (en) 1980-10-09 1980-10-09 Device for measuring vibration

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14148980A JPS5766323A (en) 1980-10-09 1980-10-09 Device for measuring vibration

Publications (1)

Publication Number Publication Date
JPS5766323A true JPS5766323A (en) 1982-04-22

Family

ID=15293096

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14148980A Pending JPS5766323A (en) 1980-10-09 1980-10-09 Device for measuring vibration

Country Status (1)

Country Link
JP (1) JPS5766323A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0354882A2 (en) * 1988-08-12 1990-02-14 Consiglio Nazionale Delle Ricerche Fiber-optic vibration sensor
US8161819B2 (en) * 2009-02-13 2012-04-24 Nissan North America, Inc. Laser deflection vibration test of door mirror

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0354882A2 (en) * 1988-08-12 1990-02-14 Consiglio Nazionale Delle Ricerche Fiber-optic vibration sensor
US8161819B2 (en) * 2009-02-13 2012-04-24 Nissan North America, Inc. Laser deflection vibration test of door mirror

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