Research on optical fiber bundle displacement sensor with multi-grouped receiving fibers

Suzhi Cao; Fajie Duan; Zhiqiang Fang; Yuzhen Ma

doi:10.1117/12.694429

10 June 2006 Research on optical fiber bundle displacement sensor with multi-grouped receiving fibers

Suzhi Cao, Fajie Duan, Zhiqiang Fang, Yuzhen Ma

Proceedings Volume 6344, Advanced Laser Technologies 2005; 63442Y (2006) https://doi.org/10.1117/12.694429
Event: Advanced Laser Technologies 2005, 2005, Tianjin, China

Abstract

A novel optical fiber displacement sensor is proposed and analyzed, which consists of a laser diode light source, an optical fiber probe, and three photodetectors. The bundling of optical fiber probe is sectioned into four parts: a centrally positioned fiber in the bundle for illumination, the first-neighbor circle of fibers for receiving (Group 1), the second circle of fibers for receiving (Group 2), and the remaining circle of fibers for receiving (Group 3). Then this paper describes the characteristic of the sensor compensation principle of three parts for receiving, mathematical model building and data acquisition system. The result confirms that the sensor can completely eliminate the influence of light source fluctuation, target surface reflectivity, and optical fiber loss. In addition, it can theoretically overcome the effect of inclined angle of the probe against target surface. The performance of the sensor using multi-grouped receiving fibers is improved and working distance is extended. Therefore, it can be more widely used, particularly in difficult measurement environments such as monitoring blade tip clearance and vibration of rotating turbo-machine.

Citation Download Citation

Suzhi Cao, Fajie Duan, Zhiqiang Fang, and Yuzhen Ma "Research on optical fiber bundle displacement sensor with multi-grouped receiving fibers", Proc. SPIE 6344, Advanced Laser Technologies 2005, 63442Y (10 June 2006); https://doi.org/10.1117/12.694429

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available