| 激光光声光谱法测量煤矿瓦斯气体的研究 |
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| 引用本文： | 徐春梅,刘先勇,袁长迎,吴琼. 激光光声光谱法测量煤矿瓦斯气体的研究[J]. 压电与声光, 2006, 28(6): 643-644 |
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| 作者姓名： | 徐春梅 刘先勇 袁长迎 吴琼 |
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| 作者单位： | 西南科技大学,信息工程学院,四川,绵阳,621010 |
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| 基金项目： | 国防基础研究基金资助项目(A312xxxx0267) |
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| 摘 要： | 介绍了使用近红外激光二极管激光光声光谱测量煤矿瓦斯气体的基本原理,给出了测量系统的结构框图,该方法是利用近红外激光二极管作为光源,通过光纤耦合输出接入共振式光声池,微音器检出的光声信号由计算机完成数据分析,可实现安全非接触在线自动检测,真实反映矿井瓦斯的浓度。
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| 关 键 词： | 激光二极管 光声光谱 瓦斯 监测 |
| 文章编号： | 1004-2474(2006)06-0643-02 |
| 收稿时间： | 2006-04-14 |
| 修稿时间： | 2006-04-14 |
Study on Measuring Gas in Coal Mine by Laser Photoacoustic Spectroscopy |
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| XU Chun-mei,LIU Xian-yong,YUAN Chang-ying,WU Qiong. Study on Measuring Gas in Coal Mine by Laser Photoacoustic Spectroscopy[J]. Piezoelectrics & Acoustooptics, 2006, 28(6): 643-644 |
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| Authors: | XU Chun-mei LIU Xian-yong YUAN Chang-ying WU Qiong |
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| Affiliation: | Institute of Information Engineering, Southwest University of Science and Technology, Mianyang 621010, China |
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| Abstract: | Principles of measuring gas(methane) in coal mine according to photoacoustic spectroscopy via laser diodes are introduced.Outlines of this measuring system is given.In the system,laser diodes are used as power sources and the laser beams are coupled into resonant PA cell by optical fibers.Photoacoustic signal detected by microphone are analyzed by computer,thus a noncontact,online and automatic gas monitoring system can be realized.The real methane concentration in coal mine can be acquired. |
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| Keywords: | laser diode PAS gas in coal mine monitoring |
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