大气气溶胶消光系数检测系统设计

肖韶荣, 朱润, 王亚吉

肖韶荣, 朱润, 王亚吉. 大气气溶胶消光系数检测系统设计[J]. 应用光学, 2012, 33(2): 255-259.
引用本文: 肖韶荣, 朱润, 王亚吉. 大气气溶胶消光系数检测系统设计[J]. 应用光学, 2012, 33(2): 255-259.
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XIAO Shao-rong, ZHU Run, WANG Ya-ji. Measurement system for atmospheric aerosol extinction coefficient[J]. Journal of Applied Optics, 2012, 33(2): 255-259.
Citation: XIAO Shao-rong, ZHU Run, WANG Ya-ji. Measurement system for atmospheric aerosol extinction coefficient[J]. Journal of Applied Optics, 2012, 33(2): 255-259.
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大气气溶胶消光系数检测系统设计

  • 南京信息工程大学 信息与控制学院,江苏 南京 210044

详细信息
    通讯作者:

    肖韶荣（1958-），男，江西吉安人，博士，教授，博导，主要从事大气环境光电探测技术的研究。

  • 中图分类号: TN958

Measurement system for atmospheric aerosol extinction coefficient

  • School of Information &Control Engineering,Nanjing University of Information Science &Technology,Nanjing 210044,China

摘要

    摘要
  • 摘要: 利用半导体激光器照射大气气溶胶试样后光强衰减得到大气气溶胶消光系数。光束经过气溶胶后检测透射方向的光强值，经光电转换、信号调理、AD采样后根据朗伯比尔定理计算气溶胶消光系数。采用双通道测量气溶胶消光系数的方法，减小了由于半导体激光器光强不稳定和大气分子对测量结果的影响。对设计的系统以不同浓度的气溶胶进行了检测，其线性度良好，相对误差小于4%。所设计的大气气溶胶检测装置体积小、操作简单、探测速度快，对监测大气污染和能见度等有一定的应用价值。
    Abstract: A method for measuring atmospheric aerosol extinction coefficient was introduced. The coefficient was obtained by detecting the attenuation of light intensity when semiconductor laser passed through the aerosol. The light intensity values were detected, and after photoelectric conversion, signal processing and AD sampling, the aerosol extinction coefficient was calculated according to Lambert-Beer theorem. The dual-channel measurement method was used in the design, in order to reduce the effect of atmospheric molecules and the instability of the semiconductor laser light. The aerosols of different concentrations were tested. The results showed that the relative error was less than 4%. The atmospheric aerosol measurement system has the advantages of small size, simple operation and fast detection. It could be used to monitor air pollution and visibility.
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    • 参考文献(1)
  • ［1］李学彬,徐青山,魏合理,等.气溶胶消光系数与质量浓度的相关性研究［J］.光学学报,2008,28(9):1655-1658.
    LI Xue-bin, XU Qing-shan, WEI He-li,et al. Study on relationship between extinction coefficient and mass concentration［J］. Acta Optica Sinica, 2008, 28 (9):1655-1658.(in Chinese with an English abstract)
    ［2］戴兵,罗向东,唱鹤鸣.大气气溶胶消光系数的计算方法研究［J］.环境科学与技术,2008, 31(1):12-15.

    DAI Bing, LUO Xiang- dong, CHANG He- ming. Study on calculating method of aerosol ext inct ion coefficients［J］. Environmental Science & Technology, 2008, 31(1):12-15. (in Chinese with an English abstract)


    ［3］王治华,贺应红,李振声,等.气溶胶后向散射消光对数比对消光系数反演的影响研究［J］.量子电子学报,2006,23(3):335-340.
    WANG Zhi-hua, HE Ying-hong, LI Zhen-sheng, et al. Effects of backscatter extinction logarithmic ratio on the inversion of aerosol extinction coefficiency［J］.Chinese Journal of Quantum Electronics, 2006,23(3):335-340. (in Chinese with an English abstract)
    ［4］罗九强.大气气溶胶粒子光吸收系数测量系统的研制［D］.成都：电子科技大学,2001.
    LUO Jiu-qiang. The study of measurement system of light absorption coefficient of aeroso1 Particles in atmosphere［D］.Chengdu： University of Electronic Science and Technology of China, 2001.（in Chinese）
    ［5］BOHREN C F, HUFFMAN D R. Absorption and scattering of light by small particles ［M］. New York: A Wileyinterscience Publication. 1983: 28-30.
    ［6］胡大可.MSP430系列单片机C语言程序设计与开发［M］. 北京:北京航空航天出版社,2003.
    HU Da-ke. MSP430 MCU C program design and development.［M］. Beijing: Beihang University Press. 2003.（in Chinese）
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  • 刊出日期:  2012-03-14

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