JPS5766323A - Device for measuring vibration - Google Patents
Device for measuring vibrationInfo
- 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
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.
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)
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 |
-
1980
- 1980-10-09 JP JP14148980A patent/JPS5766323A/en active Pending
Cited By (2)
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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