Fiber optic TDLAS-based multi-gas remote detection system for mine goaf fire

Yubin Wei; Yanfang Li; Ying Shang; Tingting Zhang; Zhiqiang Song; Chang Wang; Tongyu Liu

doi:10.1117/12.865698

12 October 2010 Fiber optic TDLAS-based multi-gas remote detection system for mine goaf fire

Yubin Wei, Yanfang Li, Ying Shang, Tingting Zhang, Zhiqiang Song, Chang Wang, Tongyu Liu

Proceedings Volume 7656, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment; 76565N (2010) https://doi.org/10.1117/12.865698
Event: 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies, 2010, Dalian, 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 signature gas (CO, CO₂, CH4, C₂H₂ and C2H4). The System uses the wavelength, respectively 1.567um, 1.608um, 1.653um, 1.530um, 1.623um near-infrared band fiber-coupled 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 multi-component gas concentration,to meet the fire forecast need for Coal goaf area. There are obvious advantages Compared with the existing beam tube monitoring system in coal mine.

Citation Download Citation

Yubin Wei, Yanfang Li, Ying Shang, Tingting Zhang, Zhiqiang Song, Chang Wang, and Tongyu Liu "Fiber optic TDLAS-based multi-gas remote detection system for mine goaf fire", Proc. SPIE 7656, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 76565N (12 October 2010); https://doi.org/10.1117/12.865698

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