Barrass S, Gérard Y, Holdsworth R J, Martin P A
Department of Chemical and Biological Sciences, University of Huddersfield, Huddersfield HD1 3DH, UK.
Spectrochim Acta A Mol Biomol Spectrosc. 2004 Dec;60(14):3353-60. doi: 10.1016/j.saa.2003.11.038.
A near-infrared diode laser-based spectrometer has been designed and built for the remote sensing of vehicle emissions. It detects carbon monoxide and carbon dioxide absorptions around 1580 nm and can provide the ratio CO/CO(2) for vehicle exhaust studies. The system is battery powered and is designed to sit unobtrusively at the side of the road. The optics and electronics of the system is described and preliminary results are presented from field trials. Extensions to the spectrometer in terms of sensitivity by detection of the more intense first overtone of carbon monoxide around 2320 nm are described, in addition to further work on other species of interest.
已设计并制造了一种基于近红外二极管激光器的光谱仪，用于车辆尾气排放的遥感监测。它能检测1580纳米附近一氧化碳和二氧化碳的吸收情况，并可为车辆尾气研究提供一氧化碳与二氧化碳的比例。该系统由电池供电，设计得可悄然安置在路边。文中描述了该系统的光学和电子部分，并给出了现场试验的初步结果。除了对其他感兴趣的物质开展进一步研究外，还介绍了通过检测2320纳米附近更强的一氧化碳第一泛音来提高光谱仪灵敏度的扩展方法。
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