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Proceedings Paper

Micromechanical silicon-structure-based optical fiber vibration sensor for electric generator
Author(s): Dong Zhou; Pei-De Lou; Kun Qiu; Minguang Tang; Fang He; Bo Zhou
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Paper Abstract

A kind of optical fiber sensor mainly used for the terminal winding vibration monitoring in electric generator is discussed. Within this sensor, the light from a LED passes through an optical fiber; the fiber end is mounted on a reflecting cantilever beam, which is sensitive to the vibration of the detected object; the reflected light coupled back through the same fiber is modulated by the vibration and detected by a photodetector. With signal processing, the vibration acceleration, velocity and displacement can be obtained. The cantilever beam, which is the key component of the sensor, is a micromechanical silicon structure. The bandwidth of the sensor is 10 - 1000 Hz, resolution 0.1 m/s2, dynamic range 0 - 10 multiplied by 9.8 m/s2, weight 15 grams, fiber length 1000 m. The result of the experiment in a real electric generator is proposed.

Paper Details

Date Published: 24 September 1996
PDF: 7 pages
Proc. SPIE 2895, Fiber Optic Sensors V, (24 September 1996); doi: 10.1117/12.252187
Show Author Affiliations
Dong Zhou, Univ. of Electronic Science and Technology of China (China)
Pei-De Lou, Univ. of Electronic Science and Technology of China (China)
Kun Qiu, Univ. of Electronic Science and Technology of China (China)
Minguang Tang, Univ. of Electronic Science and Technology of China (China)
Fang He, Univ. of Electronic Science and Technology of China (China)
Bo Zhou, Univ. of Electronic Science and Technology of China (China)


Published in SPIE Proceedings Vol. 2895:
Fiber Optic Sensors V
Kim D. Bennett; Byoung Yoon Kim; Yanbiao Liao, Editor(s)

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