title: [A mobile sensor for remote detection of natural gas leakage].
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.
authors.affiliation: Key Laboratory of Environmental Optics & Technology, Anhui Institute of Optics & Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China. zhangshuai@aiofm.ac.cn
authors.forename: Shuai
authors.initials: S
authors.lastname: Zhang
authors.forename: Wen-qing
authors.initials: WQ
authors.lastname: Liu
authors.forename: Yu-jun
authors.initials: YJ
authors.lastname: Zhang
authors.forename: Rui-feng
authors.initials: RF
authors.lastname: Kan
authors.forename: Jun
authors.initials: J
authors.lastname: Ruan
authors.forename: Li-ming
authors.initials: LM
authors.lastname: Wang
authors.forename: Dian-qiang
authors.initials: DQ
authors.lastname: Yu
authors.forename: Jin-ting
authors.initials: JT
authors.lastname: Dong
authors.forename: Xiao-lei
authors.initials: XL
authors.lastname: Han
authors.forename: Yi-ben
authors.initials: YB
authors.lastname: Cui
authors.forename: Jian-guo
authors.initials: JG
authors.lastname: Liu