Distributed optical fiber temperature sensor (DOFTS) system applied to automatic temperature alarm of coal mine and tunnel

Zaixuan Zhang; Kequan Wang; Insoo S. Kim; Jianfeng Wang; Haiqi Feng; Ning Guo; Xiangdong Yu; Bangquan Zhou; Xiaobiao Wu; Yohee Kim

doi:10.1117/12.385554

9 May 2000 Distributed optical fiber temperature sensor (DOFTS) system applied to automatic temperature alarm of coal mine and tunnel

Zaixuan Zhang, Kequan Wang, Insoo S. Kim, Jianfeng Wang, Haiqi Feng, Ning Guo, Xiangdong Yu, Bangquan Zhou, Xiaobiao Wu, Yohee Kim

Author Affiliations +

Proceedings Volume 4077, International Conference on Sensors and Control Techniques (ICSC 2000); (2000) https://doi.org/10.1117/12.385554
Event: International Conference on Sensors and Control Techniques (ICSC2000), 2000, Wuhan, China

Abstract

The DOFTS system that has applied to temperature automatically alarm system of coal mine and tunnel has been researched. It is a real-time, on line and multi-point measurement system. The wavelength of LD is 1550 nm, on the 6 km optical fiber, 3000 points temperature signal is sampled and the spatial position is certain. Temperature measured region: -50 degree(s)C--100 degree(s)C; measured uncertain value: +/- 3 degree(s)C; temperature resolution: 0.1 degree(s)C; spatial resolution: <5 cm (optical fiber sensor probe); <8 m (spread optical fiber); measured time: <70 s. In the paper, the operated principles, underground test, test content and practical test results have been discussed.

Citation Download Citation

Zaixuan Zhang, Kequan Wang, Insoo S. Kim, Jianfeng Wang, Haiqi Feng, Ning Guo, Xiangdong Yu, Bangquan Zhou, Xiaobiao Wu, and Yohee Kim "Distributed optical fiber temperature sensor (DOFTS) system applied to automatic temperature alarm of coal mine and tunnel", Proc. SPIE 4077, International Conference on Sensors and Control Techniques (ICSC 2000), (9 May 2000); https://doi.org/10.1117/12.385554

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