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Proceedings Paper

Distributed optical fiber temperature sensor (DOFTS) system applied to automatic temperature alarm of coal mine and tunnel
Author(s): Zaixuan Zhang; Kequan Wang; Insoo S. Kim; Jianfeng Wang; Haiqi Feng; Ning Guo; Xiangdong Yu; Bangquan Zhou; Xiaobiao Wu; Yohee Kim
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Paper 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.

Paper Details

Date Published: 9 May 2000
PDF: 5 pages
Proc. SPIE 4077, International Conference on Sensors and Control Techniques (ICSC 2000), (9 May 2000); doi: 10.1117/12.385554
Show Author Affiliations
Zaixuan Zhang, China Institute of Metrology (China)
Kequan Wang, China Coal Research Institute (China)
Insoo S. Kim, Korea Electrotechnology Research Institute (South Korea)
Jianfeng Wang, China Institute of Metrology (China)
Haiqi Feng, China Institute of Metrology (China)
Ning Guo, China Institute of Metrology (China)
Xiangdong Yu, China Institute of Metrology (China)
Bangquan Zhou, China Institute of Metrology (China)
Xiaobiao Wu, China Institute of Metrology (China)
Yohee Kim, Korea Electrotechnology Research Institute (South Korea)

Published in SPIE Proceedings Vol. 4077:
International Conference on Sensors and Control Techniques (ICSC 2000)
Desheng Jiang; Anbo Wang, Editor(s)

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