International Conference on Information, Electronic and Computer Science (ICIECS 2010 E-BOOK)

Zibo,China,11.26-11.28,2010

ISBN: 978-1-935068-42-6 Scientific Research Publishing, USA

E-Book 2224pp Pub. Date: November 2010

Category: Computer Science & Communications

Price: $360

Title: The Development of Fiber Ethylene Gas Concentration On-Line Detecting System Based on TDLAS
Source: International Conference on Information, Electronic and Computer Science (ICIECS 2010 E-BOOK) (pp 2111-2114)
Author(s): Yubin Wei, Shandong Key Laboratory of Optical Fiber Sensor, Jinan,Shandong,250014 ;Laser Institute of Shandong Academy of Sciences, Jinan,Shandong,250014
Tingting Zhang, Shandong Key Laboratory of Optical Fiber Sensor, Jinan,Shandong,250014 ;Laser Institute of Shandong Academy of Sciences, Jinan,Shandong,250014
Yanfang Li, Shandong Key Laboratory of Optical Fiber Sensor, Jinan,Shandong,250014 ;Laser Institute of Shandong Academy of Sciences, Jinan,Shandong,250014
Ying Shang, Shandong Key Laboratory of Optical Fiber Sensor, Jinan,Shandong,250014 ;Laser Institute of Shandong Academy of Sciences, Jinan,Shandong,250014
Chang Wang, Shandong Key Laboratory of Optical Fiber Sensor, Jinan,Shandong,250014 ;Laser Institute of Shandong Academy of Sciences, Jinan,Shandong,250014
Tongyu Liu, Shandong Key Laboratory of Optical Fiber Sensor, Jinan,Shandong,250014 ;Laser Institute of Shandong Academy of Sciences, Jinan,Shandong,250014
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, and Ethylene is an important milestone in gases in the accelerate oxidation stage of coal. A Fiber Ethylene gas concentration online detecting system is proposed based on TDLAS (tunable diode laser absorption spectroscopy) technology. The System uses the wavelength 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(ppm level) detection of 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.
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