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TDLAS直接吸收法测量CO2的基线选择方法

朱晓睿 卢伟业 饶雨舟 李越胜 卢志民 姚顺春

朱晓睿, 卢伟业, 饶雨舟, 李越胜, 卢志民, 姚顺春. TDLAS直接吸收法测量CO2的基线选择方法[J]. 中国光学(中英文), 2017, 10(4): 455-461. doi: 10.3788/CO.20171004.0455
引用本文: 朱晓睿, 卢伟业, 饶雨舟, 李越胜, 卢志民, 姚顺春. TDLAS直接吸收法测量CO2的基线选择方法[J]. 中国光学(中英文), 2017, 10(4): 455-461. doi: 10.3788/CO.20171004.0455
ZHU Xiao-rui, LU Wei-ye, RAO Yu-zhou, LI Yue-sheng, LU Zhi-min, YAO Shun-chun. Selection of baseline method in TDLAS direct absorption CO2 measurement[J]. Chinese Optics, 2017, 10(4): 455-461. doi: 10.3788/CO.20171004.0455
Citation: ZHU Xiao-rui, LU Wei-ye, RAO Yu-zhou, LI Yue-sheng, LU Zhi-min, YAO Shun-chun. Selection of baseline method in TDLAS direct absorption CO2 measurement[J]. Chinese Optics, 2017, 10(4): 455-461. doi: 10.3788/CO.20171004.0455

TDLAS直接吸收法测量CO2的基线选择方法

doi: 10.3788/CO.20171004.0455
基金项目: 

广东省质量技术监督局科技计划项目 2016ZT01

"广东特支计划"科技青年拔尖人才资助项目 2014TQ01N334

广州市珠江科技新星专项 2014J2200054

详细信息
    作者简介:

    朱晓睿(1993-), 男, 广东湛江人, 硕士研究生, 主要从事TDLAS技术监测气体方面的研究。E-mail:1241997882@qq.com

    姚顺春(1983-), 男, 浙江龙游人, 博士, 副教授, 硕士生导师, 主要从事燃烧诊断、排放监测及其控制技术方面的研究

    通讯作者:

    姚顺春, E-mail:epscyao@scut.edu.cn

  • 中图分类号: O443.1

Selection of baseline method in TDLAS direct absorption CO2 measurement

Funds: 

Science and Technology Project of GDQTS 2016ZT01

Project of "Guangdong Special Branch Plan "Science Young Talents 2014TQ01N334

Guangzhou Pearl River Science and Technology Rising Star Special Project 2014J2200054

More Information
  • 摘要: 本文基于可调谐半导体激光吸收谱线(TDLAS)技术的直接吸收测量,选用中心工作波长为1 580 nm的DFB激光器,在室温及大气常压条件下检测了模拟烟气中的CO2浓度;采用去峰拟合法和纯N2线拟合法获得基线后反算出了CO2的浓度,并将反算结果进行了对比。结果表明:采用纯N2线拟合法反算出的浓度的最大相对误差为2.64%,均方值为1.69%;采用去拟合法反算出的浓度的最大相对误差为9.81%,均方值为7.81%。以纯N2吸收谱线作基线的纯N2线拟合方法反算出的浓度的准确度较高,可以为CO2浓度测量的基线选择提供参考。

     

  • 图 1  CO2、H2O、NO在1 580 nm附近的吸收谱线图[12]

    Figure 1.  Absorption lines of CO2, H2O, NO nearby 1 580 nm

    图 2  实验装置图

    Figure 2.  Experimental setup

    图 3  1 580 nm激光器测得的纯N2线与各体积分数CO2的吸收谱线

    Figure 3.  Pure N2 line and absorption lines of different concentrations of CO2 measured by 1 580 nm laser

    图 4  去峰拟合法获得的基线

    Figure 4.  Baseline obtained by the removing absorption peak fitting method

    图 5  纯N2线拟合法获得的基线

    Figure 5.  Baseline obtained by the pure N2 line fitting method

    图 6  CO2配置浓度与反算浓度之间的线性关系

    Figure 6.  Linear relationship between true concentration of CO2 and its fitted concentration

    表  1  去峰拟合法处理得到的结果

    Table  1.   Results obtained by the removingabsorption peak fitting method

    Serial
    number
    True
    concen-
    tration/%
    Fitted
    concen-
    tration/%
    Absolute
    error/%
    Relative
    error/%
    1 10 9.5 -0.48 -4.88
    2 12 10.8 -1.17 -9.81
    3 14 12.7 -1.27 -9.12
    4 16 14.9 -1.04 -6.51
    5 18 16.7 -1.22 -6.81
    6 20 18.3 -1.71 -8.56
    下载: 导出CSV

    表  2  纯N2线拟合法处理得到的结果

    Table  2.   Results obtained by the pure N2 line fitting method

    Serial
    number
    True
    concen-
    tration/%
    Fitted
    concen-
    tration/%
    Absolute
    error/%
    Relative
    error/%
    1 10 10.1 0.05 0.55
    2 12 12.2 0.27 2.32
    3 14 14.3 0.37 2.64
    4 16 16.1 0.12 0.78
    5 18 17.9 -0.03 -0.17
    6 20 19.6 -0.38 -1.92
    下载: 导出CSV
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出版历程
  • 收稿日期:  2017-02-21
  • 修回日期:  2017-03-31
  • 刊出日期:  2017-08-01

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