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Proceedings Paper

Study on weigh-in-motion system based on chirped fiber gratings
Author(s): Dong-sheng Zhang; Dan Guo; Wei Li; Yong-guo Li; An Wu; Kai-fang Yao; De-sheng Jiang
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Paper Abstract

A novel weigh-in-motion (WIM) system used for high way is developed based on Chirped fiber Bragg gratings (CFBG) in this paper. The WIM system consists of four CFBG pressure sensors, each of which contains a couple of CFBG. The sensor can directly output optical intensity signal, so the postprocessor instrument is simple and cheap instead of expensive wavelength demodulation apparatus. Theoretical and experimental results indicate that output optical intensity of the sensor is linearly proportional to the pressure, and the linearity and the repeated error can respectively reach to 0.9997 and 0.05%FS. We have also exceeded series experiments with several kinds of automobile with different velocity, and received good results of relative error below 5%.

Paper Details

Date Published: 17 January 2008
PDF: 9 pages
Proc. SPIE 6830, Advanced Sensor Systems and Applications III, 68300V (17 January 2008); doi: 10.1117/12.753503
Show Author Affiliations
Dong-sheng Zhang, Wuhan Univ. of Technology (China)
Dan Guo, Wuhan Univ. of Technology (China)
Wei Li, Wuhan Univ. of Technology (China)
Yong-guo Li, Wuhan Univ. of Technology (China)
An Wu, Wuhan Univ. of Technology (China)
Kai-fang Yao, Wuhan Univ. of Technology (China)
De-sheng Jiang, Wuhan Univ. of Technology (China)

Published in SPIE Proceedings Vol. 6830:
Advanced Sensor Systems and Applications III
Yun-Jiang Rao; Yanbiao Liao; Gang-Ding Peng, Editor(s)

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