Real-time monitoring system for CO and CO2 of automobile exhaust based on FM-TDLAS

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

doi:10.1117/12.2585468

8 December 2020 Real-time monitoring system for CO and CO₂ of automobile exhaust based on FM-TDLAS

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

Proceedings Volume 11606, ICOSM 2020: Optoelectronic Science and Materials; 1160616 (2020) https://doi.org/10.1117/12.2585468
Event: Second International Conference on Optoelectronic Science and Materials (ICOSM 2020), 2020, Hefei, China

Abstract

Wavelength modulation technology (WMS) is widely used in exhaust telemetry system now, but frequency modulation technology (FMS) is rarely used for the highest working frequency limitation of phase-locked amplifier. Based on FMS and tunable diode laser absorption spectroscopy (TDLAS), a real-time detection system for CO and CO₂ of automobile exhaust is designed by embedded system, Industrial Personal Computer(IPC) and a phase-sensitive detection circuit with radio frequency(RF) mixer as the core. It can be shown that the system works stably,and can detect CO and CO₂ timely and accurately by experimental data.

Citation Download Citation

Yang Tong, Tongqing Liao, Geng Liu, Changyu Zuo, Bin Li, and Caineng Huang "Real-time monitoring system for CO and CO₂ of automobile exhaust based on FM-TDLAS", Proc. SPIE 11606, ICOSM 2020: Optoelectronic Science and Materials, 1160616 (8 December 2020); https://doi.org/10.1117/12.2585468

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