FBG sensor network in Qinghai-Tibet railway monitoring system

Wentao Zhang; Jingyun Dai; Baochen Sun; Yanliang Du

doi:10.1117/12.757277

26 November 2007 FBG sensor network in Qinghai-Tibet railway monitoring system

Wentao Zhang, Jingyun Dai, Baochen Sun, Yanliang Du

Proceedings Volume 6830, Advanced Sensor Systems and Applications III; 68301P (2007) https://doi.org/10.1117/12.757277
Event: Photonics Asia 2007, 2007, Beijing, China

Abstract

A fiber Bragg grating (FBG) sensors network in the roadbed temperature monitoring system in Qinghai-Tibet railway is presented. This sensor network is composed of FBG sensor chains embedded in the roadbed, slave optical cables, work stations which include the FBG sensor interrogator and the optical router, master optical cables, and center workstation. We give the primary experimental results of this sensor network in monitoring the roadbed temperature of the railway at DK0985+000 near Chumar River. The temperature data was collected after a month when the temperature field in the monitoring hole became stable. This experiment had been carried out for more than one year. The FBG sensor network has successfully measured the temperature in the roadbed with an accuracy of 0.1 centigrade. Furthermore, the experimental result shows the stability and reliability of the FBG sensor network in the harsh environment of Qinghai-Tibet plateau. The prospect of the FBG sensor network in monitoring other parameters in the Qinghai-Tibet plateau is also presented.

Citation Download Citation

Wentao Zhang, Jingyun Dai, Baochen Sun, and Yanliang Du "FBG sensor network in Qinghai-Tibet railway monitoring system", Proc. SPIE 6830, Advanced Sensor Systems and Applications III, 68301P (26 November 2007); https://doi.org/10.1117/12.757277

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