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Proceedings Paper

A high speed, portable, multi-function, weigh-in-motion (WIM) sensing system and a high performance optical fiber Bragg grating (FBG) demodulator
Author(s): Hongtao Zhang; Zhanxiong Wei; Lingling Fan; Shangming Yang; Pengfei Wang; Hong-Liang Cui
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Paper Abstract

A high speed, portable, multi-function WIM sensing system based on Fiber Bragg Grating (FBG) technology is reported in this paper. This system is developed to measure the total weight, the distribution of weight of vehicle in motion, the distance of wheel axles and the distance between left and right wheels. In this system, a temperature control system and a real-time compensation system are employed to eliminate the drifts of optical fiber Fabry-Pérot tunable filter. Carbon Fiber Laminated Composites are used in the sensor heads to obtain high reliability and sensitivity. The speed of tested vehicles is up to 20 mph, the full scope of measurement is 4000 lbs, and the static resolution of sensor head is 20 lbs. The demodulator has high speed (500 Hz) data collection, and high stability. The demodulator and the light source are packed into a 17'' rack style enclosure. The prototype has been tested respectively at Stevens' campus and Army base. Some experiences of avoiding the pitfalls in developing this system are also presented in this paper.

Paper Details

Date Published: 1 April 2010
PDF: 5 pages
Proc. SPIE 7647, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2010, 76473D (1 April 2010); doi: 10.1117/12.850739
Show Author Affiliations
Hongtao Zhang, Stevens Institute of Technology (United States)
Zhanxiong Wei, Stevens Institute of Technology (United States)
Lingling Fan, Stevens Institute of Technology (United States)
Shangming Yang, Yantai Univ. (China)
Pengfei Wang, Stevens Institute of Technology (United States)
Hong-Liang Cui, Stevens Institute of Technology (United States)


Published in SPIE Proceedings Vol. 7647:
Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2010
Masayoshi Tomizuka, Editor(s)

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