Fiber carbon monoxide sensing system and its application in coal mines

Yubin Wei; Tingting Zhang; Yanfang Li; Yanjie Zhao; Tongyu Liu; Chang Wang

doi:10.1117/12.975259

7 November 2012 Fiber carbon monoxide sensing system and its application in coal mines

Yubin Wei, Tingting Zhang, Yanfang Li, Yanjie Zhao, Tongyu Liu, Chang Wang

Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 84216K (2012) https://doi.org/10.1117/12.975259
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China

Abstract

Spontaneous combustion in coal goaf area is one of major disasters in coal mines. Detection technology based on signature Gas is the primary means of spontaneous combustion forecasting of coal goaf area. A real-time remote fire gas detection system is proposed based on tunable diode laser absorption spectroscopy technology, to achieve valid test of Carbon Monoxide signature gas. The System uses the wavelength, respectively 1.567um near-infrared band fibercoupled distributed feedback laser (DFB) as the light source, combined wavelength modulation spectroscopy and harmonic detection technique, developed a fiber-coupled white-type long-path gas absorption cell, to achieve high sensitivity detection of gas concentration. The system achieved a remote on-line monitoring of Carbon Monoxide gas concentration, to meet the fire forecast need for Coal Mine goaf area.

Citation Download Citation

Yubin Wei, Tingting Zhang, Yanfang Li, Yanjie Zhao, Tongyu Liu, and Chang Wang "Fiber carbon monoxide sensing system and its application in coal mines", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 84216K (7 November 2012); https://doi.org/10.1117/12.975259

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