Study on weigh-in-motion system based on chirped fiber gratings

Dong-sheng Zhang; Dan Guo; Wei Li; Yong-guo Li; An Wu; Kai-fang Yao; De-sheng Jiang

doi:10.1117/12.753503

17 January 2008 Study on weigh-in-motion system based on chirped fiber gratings

Dong-sheng Zhang, Dan Guo, Wei Li, Yong-guo Li, An Wu, Kai-fang Yao, De-sheng Jiang

Proceedings Volume 6830, Advanced Sensor Systems and Applications III; 68300V (2008) https://doi.org/10.1117/12.753503
Event: Photonics Asia 2007, 2007, Beijing, China

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%.

Citation Download Citation

Dong-sheng Zhang, Dan Guo, Wei Li, Yong-guo Li, An Wu, Kai-fang Yao, and De-sheng Jiang "Study on weigh-in-motion system based on chirped fiber gratings", Proc. SPIE 6830, Advanced Sensor Systems and Applications III, 68300V (17 January 2008); https://doi.org/10.1117/12.753503

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