Real-time monitoring system of NOx and HC in vehicle exhaust based on DOAS

Geng Liu; Tongqing Liao; Yang Tong; Changyu Zuo; Bin Li; Caineng Huang

doi:10.1117/12.2585471

8 December 2020 Real-time monitoring system of NO_xand HC in vehicle exhaust based on DOAS

Geng Liu, Tongqing Liao, Yang Tong, Changyu Zuo, Bin Li, Caineng Huang

Proceedings Volume 11606, ICOSM 2020: Optoelectronic Science and Materials; 1160617 (2020) https://doi.org/10.1117/12.2585471
Event: Second International Conference on Optoelectronic Science and Materials (ICOSM 2020), 2020, Hefei, China

Abstract

In order to monitor the emissions of HC and NO_x in vehicle exhaust timely, a real-time monitoring system for vehicle exhaust based on ultraviolet differential optical absorption spectroscopy(DOAS) technology is designed. First, the UV spectrum data are collected by PIC microcontroller and FreeRtos real-time operating system. Then the gas concentration is obtained through the least squares method on Industrial Personal Computer(IPC). Finally, the stability and accuracy of the system are tested.

Citation Download Citation

Geng Liu, Tongqing Liao, Yang Tong, Changyu Zuo, Bin Li, and Caineng Huang "Real-time monitoring system of NO_xand HC in vehicle exhaust based on DOAS", Proc. SPIE 11606, ICOSM 2020: Optoelectronic Science and Materials, 1160617 (8 December 2020); https://doi.org/10.1117/12.2585471

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