Motor exhaust telemetry device based on differential optical absorption spectroscopy

Xiaohong Han; Yueming Liu; Jie Guo

doi:10.1117/12.2519441

14 February 2019 Motor exhaust telemetry device based on differential optical absorption spectroscopy

Xiaohong Han, Yueming Liu, Jie Guo

Proceedings Volume 11048, 17th International Conference on Optical Communications and Networks (ICOCN2018); 110483P (2019) https://doi.org/10.1117/12.2519441
Event: 17th International Conference on Optical Communications and Networks (ICOCN2018), 2018, Zhuhai, China

Abstract

In order to monitor the motor vehicle exhaust effectively, a motor vehicle exhaust telemetry device is set up based on differential optical absorption spectroscopy (DOAS) in this paper. The absorption spectrum of NO and 1,3-butadiene are analyzed quickly, meanwhile, qualitative and quantitative analysis are made simultaneously by the Least Square Method. Moreover, the correlation coefficient of absorbance and concentration reaching more than 0.999, which is obtained by non-linear analysis through polynomial fitting method. Additionally, the minimum detection limits of NO and 1,3-butadiene are 3ppm and 0.5ppm respectively. In order to verify the performance of the system, a set of tests were performed for a long time. So the experimental results show that the relative error of NO is not more than 2%, and the relative error of 1,3-butadiene is less than 2%. In addition, the calculation results of the experiment demonstrate that the repeatability error of NO is better than 1%, and the repeatability errors of 1,3-butadiene is lower than 2%. All the results meet the requirement of the application.

Citation Download Citation

Xiaohong Han, Yueming Liu, and Jie Guo "Motor exhaust telemetry device based on differential optical absorption spectroscopy", Proc. SPIE 11048, 17th International Conference on Optical Communications and Networks (ICOCN2018), 110483P (14 February 2019); https://doi.org/10.1117/12.2519441

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