| 一种移动式遥测天然气泄漏检测仪 |
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| 作者姓名： | Zhang S Liu WQ Zhang YJ Kan RF Ruan J Wang LM Yu DQ Dong JT Han XL Cui YB Liu JG |
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| 作者单位： | 中国科学院环境光学与技术重点实验室中国科学院安徽光学精密机械研究所;胜利工程设计咨询有限公司 |
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| 基金项目： | 国家(863计划)项目(2008AA06Z208);国家(973计划)项目(2010CB234607)资助 |
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| 摘 要： | 天然气管道泄漏检测对人员安全、环境保护以及国家财产安全等具有重要的意义,但是,由于管线跨越地域广阔,操作工况以及环境情况复杂,致使管线的泄漏检测存在困难。文章介绍了一种基于波长扫描差分吸收光谱技术的移动式遥测天然气泄漏检测仪。针对遥测回波吸收光谱特性,提出了基于小波变换的改进型软阈值小波去噪方法,实验分析能够提高系统信噪比3倍多,同时在遥测光强为530nA时,可达到的最小遥测灵敏度为80ppm.m,系统采用波长扫描差分吸收光谱技术成功实现天然气泄漏的定量遥测与准确定位,具有快速、准确、智能及安全等特点。
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| 关 键 词： | 无合作目标 波长扫描差分吸收光谱 定量遥测 小波去噪 |
A mobile sensor for remote detection of natural gas leakage |
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| Zhang S,Liu WQ,Zhang YJ,Kan RF,Ruan J,Wang LM,Yu DQ,Dong JT,Han XL,Cui YB,Liu JG.A mobile sensor for remote detection of natural gas leakage[J].Spectroscopy and Spectral Analysis,2012,32(2):570-574. |
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| Authors: | Zhang Shuai Liu Wen-qing Zhang Yu-jun Kan Rui-feng Ruan Jun Wang Li-ming Yu Dian-qiang Dong Jin-ting Han Xiao-lei Cui Yi-ben Liu Jian-guo |
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| Institution: | Key Laboratory of Environmental Optics & Technology, Anhui Institute of Optics & Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China. zhangshuai@aiofm.ac.cn |
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| Abstract: | The detection of natural gas pipeline leak becomes a significant issue for body security, environmental protection and security of state property. However, the leak detection is difficult, because of the pipeline's covering many areas, operating conditions and complicated environment. A mobile sensor for remote detection of natural gas leakage based on scanning wavelength differential absorption spectroscopy (SWDAS) is introduced. The improved soft threshold wavelet denoising was proposed by analyzing the characteristics of reflection spectrum. And the results showed that the signal to noise ratio (SNR) was increased three times. When light intensity is 530 nA, the minimum remote sensitivity will be 80 ppm x m. A widely used SWDAS can make quantitative remote sensing of natural gas leak and locate the leak source precisely in a faster, safer and more intelligent way. |
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| Keywords: | Non-cooperative target Scanning wavelength differential absorption spectroscopy(SWDAS) Quantitative remote sensing Wavelet denoising |
| 本文献已被 CNKI PubMed 等数据库收录！ |
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