Study on the Concentration Inversion of NO &NO2 Gas from the Vehicle Exhaust Based on Weighted PLS

• 作者: Boqiang Fan Dongqi Yu Guohua Liu Kai Zhang Kun You Qixing Tang Wenqing Liu Yibing Lu Ying He Yujun Zhang
• 来源期刊: 光学与光子学期刊(英文)
• 学科: 医学
• 关键词: Absorption Spectra NO & NO2 GAS WEIGHTED Partial Least SQUARES Regression Concentration INVERSION
• 年，卷（期）: 2017,（8）
• 页码范围: 106-115
• 页数: 10页
• 分类号: R73

摘要

It becomes a key technology to measure the concentration of the vehicle exhaust components with the absorption spectra. But because of the overlap of gas absorption bands, how to separate the absorption information of each component gas from the mixed absorption spectra has become the key point to restrict the precision of the optical detection method. In this paper, the ex-perimental platform for the absorption spectrum of vehicle exhaust components has been established. Based on the ultraviolet absorption spectra measured with the platform of exhaust gas NO & NO2, the concentration regression model for the two components has been established with weighted partial least squares regression (WPLS). Finally the each spectral characteristic information of NO & NO2 gas has been separated and the concentration of each corresponding component has been reversed successfully.