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Proceedings Paper

Remote sensing CO, CO2 in vehicle emissions based on TDLAS
Author(s): Tiedong Wang; Wenqing Liu; Yujun Zhang; Jianguo Liu; Fengzhong Dong; Min Wang; Xiaomei Wang; Min Xu
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Paper Abstract

Knowing the quantity of pollutants that the vehicle fleet is emitting to the air has become a vital question in almost every major city in China. Finding and fixing gross polluters is therefore very important to control the urban air quality and protect the human health and the environment. Remote sensing is an important advance in the technology of on-road vehicle emissions testing because it is fast, mobile, and unobtrusive. This on-road vehicle emissions remote system is designed to measure the carbon monoxide, carbon dioxide and opacity from the vehicles's tailpipe based on the Tuneable Diode Laser Absorption Spectroscopy (TDLAS). There are several advantages of this system such as compact design and ease of use. The measurement principle and optical layout of the instrument has been described in this paper. Field testing at Beijing and Hefei were conducted over one year, more than 6000 vehicles were tested. This vehicle emissions remote system has been shown to be able to measure CO,CO2 and opacity from individual at highway speeds. In parallel, the plate license, speed, acceleration and length of vehicle are recognised by computer so that the owners of vehicles exceeding the permissible level of emissions can be identified.

Paper Details

Date Published: 10 June 2006
PDF: 6 pages
Proc. SPIE 6344, Advanced Laser Technologies 2005, 634425 (10 June 2006); doi: 10.1117/12.693658
Show Author Affiliations
Tiedong Wang, Anhui Institute of Optics and Fine Mechanics (China)
Wenqing Liu, Anhui Institute of Optics and Fine Mechanics (China)
Yujun Zhang, Anhui Institute of Optics and Fine Mechanics (China)
Jianguo Liu, Anhui Institute of Optics and Fine Mechanics (China)
Fengzhong Dong, Anhui Institute of Optics and Fine Mechanics (China)
Min Wang, Anhui Institute of Optics and Fine Mechanics (China)
Xiaomei Wang, Anhui Institute of Optics and Fine Mechanics (China)
Min Xu, Anhui Institute of Optics and Fine Mechanics (China)


Published in SPIE Proceedings Vol. 6344:
Advanced Laser Technologies 2005
Ivan A. Shcherbakov; Kexin Xu; Qingyue Wang; Alexander V. Priezzhev; Vladimir I. Pustovoy, Editor(s)

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