| 应用TDLAS探测气体的误差分析与补偿研究 |
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| 引用本文： | 矫晓敏,尚丽平.应用TDLAS探测气体的误差分析与补偿研究[J].传感器与微系统,2008,27(3):70-73. |
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| 作者姓名： | 矫晓敏 尚丽平 |
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| 作者单位： | 西南科技大学,信息控制工程专业,四川,绵阳,621010 |
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| 摘 要： | 针对基于可调谐二极管激光吸收光谱技术(TDLAS)的气体体积分数检测系统,介绍了TDLAS探测气体体积分数的原理;详细分析了测量误差的影响因素;研究了将所测得的吸收谱线扣除背景谱线,对采集到的二次谐波信号采用最小二乘波形拟合的信号处理方法。这种方法可以有效地抑制噪声干扰,提高探测灵敏度。
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| 关 键 词： | 二次谐波 吸收光谱 最小二乘法 |
| 文章编号： | 1000-9787(2008)03-0070-03 |
| 修稿时间： | 2006年6月22日 |
Research on noise analysis and compensation of gas detection based on TDLAS |
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| JIAO Xiao-min,SHANG Li-ping.Research on noise analysis and compensation of gas detection based on TDLAS[J].Transducer and Microsystem Technology,2008,27(3):70-73. |
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| Authors: | JIAO Xiao-min SHANG Li-ping |
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| Abstract: | The principle of tunable diode laser absorption spectroscopy(TDLAS)is presented.The measuring volume fraction error reason on the gas volume fraction measurement system is analyzed in detail.The signal processing method of the liner least-squares fitting used to deal with second harmonic signal,which come from the absorption spectroscopy deducting background spectroscopy is researched.The method can effectively restrain noise and improve sensitivity. |
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| Keywords: | second harmonic absorption spectroscopy least square method |
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