JPS57120827A - Vibrometer - Google Patents

Vibrometer

Info

Publication number
JPS57120827A
JPS57120827A JP652481A JP652481A JPS57120827A JP S57120827 A JPS57120827 A JP S57120827A JP 652481 A JP652481 A JP 652481A JP 652481 A JP652481 A JP 652481A JP S57120827 A JPS57120827 A JP S57120827A
Authority
JP
Japan
Prior art keywords
vibrations
fiber
light
optical
optical fiber
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
JP652481A
Other languages
Japanese (ja)
Inventor
Naoki Honma
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP652481A priority Critical patent/JPS57120827A/en
Publication of JPS57120827A publication Critical patent/JPS57120827A/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 perform precision vibration measurement without the influence of the magnetic fields and electric fields of the outside by converting vibrations to optical signals through utilization of the optical properties in the opening part of an optical fiber, leading these to the outside with the optical fiber and converting the same to electric signals. CONSTITUTION:Light from a light source 10 arrives at a reflection plate 5 installed to a mass-spring system via a fiber 7 for light projection, and the light reflected there is made incident to a photodetector 11 via a fiber 7 for photodetection. The distance from the opening face of the optical fiber up to the reflection face is beforehand so set as to come to the mid-point y2 of y1 and y3 in the static state of a weight 2. When vibrations are applied upon a vessel 1, the weight 2 acts as an immobile point, and the distance from the plate 5 up to the opening face of the optical fiber changes in accordance with vibrations and therefore the quantity of light proportional to the amplitude of the vibrations is obtained in the fiber 7. The quantity of the optical beam is converted to an electric signal by a photodetector 11 and this signal is applied via an amplifier 12 to an indicating meter 13, whereby the quantity of the vibrations is measured.
JP652481A 1981-01-21 1981-01-21 Vibrometer Pending JPS57120827A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP652481A JPS57120827A (en) 1981-01-21 1981-01-21 Vibrometer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP652481A JPS57120827A (en) 1981-01-21 1981-01-21 Vibrometer

Publications (1)

Publication Number Publication Date
JPS57120827A true JPS57120827A (en) 1982-07-28

Family

ID=11640752

Family Applications (1)

Application Number Title Priority Date Filing Date
JP652481A Pending JPS57120827A (en) 1981-01-21 1981-01-21 Vibrometer

Country Status (1)

Country Link
JP (1) JPS57120827A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58125842U (en) * 1982-02-18 1983-08-26 赤井電機株式会社 Acoustic vibration detection device
JPS60102528A (en) * 1983-10-25 1985-06-06 インタ−ナショナル　ビジネス　マシ−ンズ　コ−ポレ−ション Optical vibration analyzer

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58125842U (en) * 1982-02-18 1983-08-26 赤井電機株式会社 Acoustic vibration detection device
JPS60102528A (en) * 1983-10-25 1985-06-06 インタ−ナショナル　ビジネス　マシ−ンズ　コ−ポレ−ション Optical vibration analyzer
US4577508A (en) * 1983-10-25 1986-03-25 International Business Machines Corporation Optical vibration analyzer
JPH0530205B2 (en) * 1983-10-25 1993-05-07 Intaanashonaru Bijinesu Mashiinzu Corp

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