| 基于调谐二极管激光吸收光谱的燃气管道泄漏探测研究 |
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| 引用本文： | 张启兴,王进军,刘炳海,蔡霆力,乔利锋,张永明.基于调谐二极管激光吸收光谱的燃气管道泄漏探测研究[J].光谱学与光谱分析,2009,29(8):2017-2020. |
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| 作者姓名： | 张启兴 王进军 刘炳海 蔡霆力 乔利锋 张永明 |
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| 作者单位： | 中国科学技术大学火灾科学国家重点实验室,安徽,合肥,230027 |
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| 摘 要： | 根据可调谐二极管激光吸收光谱及谐波探测的原理,建立以分布反馈式半导体激光器为可调谐光源,利用多次反射池进行点式采样的实验装置.基于甲烷分子1653.7nm附近的吸收线,实验研究二次谐波信号对甲烷浓度的响应线性,并实现空气中甲烷本底含量的测量.研究结果表明可调谐二极管激光气体检测技术可为城市燃气管道泄漏探测提供了一种灵敏度高、抗干扰能力强的有效手段.
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| 关 键 词： | 可调谐二极管激光 多次反射池 波长调制 甲烷 泄露探测 |
| 收稿时间： | 2008/3/28 |
Gas Pipeline Leak Detection Based on Tunable Diode Laser Absorption Spectroscopy |
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| ZHANG Qi-xing,WANG Jin-jun,LIU Bing-hai,CAI Ting-li,QIAO Li-feng,ZHANG Yong-ming.Gas Pipeline Leak Detection Based on Tunable Diode Laser Absorption Spectroscopy[J].Spectroscopy and Spectral Analysis,2009,29(8):2017-2020. |
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| Authors: | ZHANG Qi-xing WANG Jin-jun LIU Bing-hai CAI Ting-li QIAO Li-feng ZHANG Yong-ming |
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| Institution: | ZHANG Qi-xing,WANG Jin-jun,LIU Bing-hai,CAI Ting-li,QIAO Li-feng,ZHANG Yong-mingState Key Laboratory of Fire Science,University of Science & Technology of China,Hefei 230027,China |
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| Abstract: | The principle of tunable diode laser absorption spectroscopy and harmonic detection technique was introduced. An experimental device was developed by point sampling through small multi-reflection gas cell. A specific line near 1 653.7 nm was targeted for methane measurement using a distributed feedback diode laser as tunable light source. The linearity between the intensity of second harmonic signal and the concentration of methane was determined. The background content of methane in air was measured. The r... |
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| Keywords: | Tunable diode laser Multi-reflection cell Wavelength modulation Methane Leak detection |
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