| 激光遥测甲烷气体最低可探测浓度 |
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| 引用本文： | 王铁云,张雷,董磊,窦海鹏,贾锁堂.激光遥测甲烷气体最低可探测浓度[J].中国激光,2006,33(3):05-407. |
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| 作者姓名： | 王铁云 张雷 董磊 窦海鹏 贾锁堂 |
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| 作者单位： | 1. 长治学院电子信息与物理系,山西,长治,046011;山西大学物理电子工程学院,山西,太原,030006
2. 山西大学物理电子工程学院,山西,太原,030006 |
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| 摘 要： | 对一种使用单一激光源遥感检测甲烷方案的最低可探测的路径-积分浓度进行了理论分析和实验研究,该方案主要采用了频率调制及谐波探测技术。通过理论计算得出了最低可探测甲烷的路径-积分浓度大约为8.7×10-8m。实验中测得该探测系统的探测灵敏度为8.43×10-6m/mV,甲烷最低可探测路径-积分浓度为4.2×10-7m。结果表明该探测系统具有较高的探测灵敏度,完全满足对矿井瓦斯的实时监测要求。
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| 关 键 词： | 光谱学 气体检测 最低可探测甲烷浓度 遥感检测 瓦斯 |
| 文章编号： | 0258-7025（2006）03-0405-03 |
| 收稿时间： | 2005-05-25 |
| 修稿时间： | 2005-11-07 |
Minimum Detection Limit for Methane with Single Laser Remote Sensing |
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| WANG Tie-yun,ZHANG Lei,DONG Lei,DOU Hai-peng,JIA Suo-tang.Minimum Detection Limit for Methane with Single Laser Remote Sensing[J].Chinese Journal of Lasers,2006,33(3):05-407. |
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| Authors: | WANG Tie-yun ZHANG Lei DONG Lei DOU Hai-peng JIA Suo-tang |
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| Abstract: | This article carried theoretical analysis and experimental research on the scheme of remote sensing the minimum detection limit concentration for methane gas using a single laser source. In this project, the frequency-modulation (FM) and harmonic detection (HD) technologies are adopted. It is obtained through the theoretical calculation that the minimum detection limit concentration for methane gas was about 8.7×10-8 m. Simultaneously the experimental sensitivity of the detection system and the minimum measurable path-integrated concentration were measured to be 8.43×10-6 m/mV and 4.2×10-7 m respectively. This results show that the remote sensing system owns a super-high sensitivity and it can satisfy the need of monitoring methane in the coal mine. |
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| Keywords: | spectroscopy gas detection minimum detection limit for methane remote sensing detection gas |
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