基于协相关性和傅里叶变换-差分吸收光谱法的臭氧浓度在线测量研究  

Research of On-line Monitoring of Ozone Concentration Based on Association Correlation and Differential Optical Absorption Spectroscopy-Fourier Transform

作　　者：郑海明 姚鹏辉[3] ZHENG Hai-ming;YAO Peng-hui(School of Mechanical and Energy Engineering,Guangdong Ocean University,Yangjiang,Guangdong 529500,China;School of Energy Power and Mechanical Engineering,North China Electric Power University,Baoding,Hebei 071003,China;Hebei Mechatronics Intermediate Pilot Production Base,Shijiazhuang,Hebei 050000,China)

机构地区：[1]广东海洋大学机械与能源工程学院,广东阳江529500 [2]华北电力大学能源动力与机械工程学院,河北保定071003 [3]河北省机电一体化中试基地,河北石家庄050000

出　　处：《计量学报》2023年第2期284-289,共6页Acta Metrologica Sinica

基　　金：国家自然科学基金(11174078);河北省自然科学基金(E2019502089);中央高校基本科研业务费专项资金(2017MS145)。

摘　　要：采用协相关性和傅里叶变换-差分吸收光谱法对臭氧浓度进行了在线测量研究。先创建1套能够用于实验室在线监测臭氧浓度的发生装置,其测量精度可达到0.1×10^(-6);然后应用协相关性对测得的多组背景谱和吸收谱进行分析与计算,得到最优背景谱和吸收谱,进而准确反演臭氧吸收截面,优化臭氧浓度的计算过程;最后采用傅里叶变换-差分吸收光谱法以及逆傅里叶变换法在320~350 nm波段反演臭氧浓度,成功消除系统噪声的干扰,得到反演臭氧浓度的二次方程。The on-line measurement of ozone concentration was carried out by co-correlation and Fourier transform differential absorption spectroscopy.First,a set of generator that can be used for on-line monitoring of ozone concentration in the laboratory was created,and its measurement accuracy can reach 0.1×10^(-6).Then,the best background spectrum and absorption spectrum can be obtained by calculating the measured multi group background spectrum and absorption spectrum by using the co correlation,so as to accurately retrieve the ozone absorption cross section and optimize the calculation process of ozone concentration.Finally,Fourier transform differential absorption spectroscopy and inverse Fourier transform were used to retrieve ozone concentration in 320~350 nm band,the interference of system noise was successfully eliminated and the quadratic equation for retrieving ozone concentration was obtained.

关 键 词：计量学 臭氧浓度 差分吸收光谱法 傅里叶变换 协相关性 在线测量 

分 类 号：TB99[一般工业技术—计量学]