Paper Title:
Monitoring Method of Stray Current in Coal Mine on Optical Fiber Sensing Technique
  Abstract

In this work a novel monitoring method was developed to measure the underground stray current in coal mine with fiber current sensing technique. According to the theory of optical fiber current sensor based on Faraday magneto-optic effect, a fiber sensing system was designed and the relative experiments with current generator simulating stray current were completed. The results indicate that the measurement was influenced by birefringence and temperature change. The sensing heads with high cylindrical birefringence optical fiber had a good suppressing effect on linear birefringence and the polarization state of polarized light was also more stable than that with low birefringence optical fiber. The fiber current sensing method is doable in underground stray current monitoring system in coal mine.

  Info
Periodical
Edited by
Long Chen, Yongkang Zhang, Aixing Feng, Zhenying Xu, Boquan Li and Han Shen
Pages
457-462
DOI
10.4028/www.scientific.net/AMM.43.457
Citation
L. H. Cai, W. Li, H. F. Fang, "Monitoring Method of Stray Current in Coal Mine on Optical Fiber Sensing Technique", Applied Mechanics and Materials, Vol. 43, pp. 457-462, 2011
Online since
December 2010
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