基于TDLAS测量燃烧过程中的多目标光谱诊断关键技术研究

项目名称： 基于TDLAS测量燃烧过程中的多目标光谱诊断关键技术研究

项目编号： No.61275154

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 无线电电子学、电信技术

项目作者： 邵杰

作者单位： 浙江师范大学

项目金额： 80万元

中文摘要： 作为高灵敏度、高分辨率、实时快速、非接触测量的可调谐半导体激光吸收光谱(TDLAS)技术，最近几年已经成功地应用于大气污染成分探测、医学诊断和化学反应过程等领域。随着半导体激光器的发展及其具备的价格优势，该技术在高温燃烧过程监测应用中日趋受到重视。由于近红外区气体光谱易受其它气体吸收的干扰，特别是高温水汽热带的干扰，因此如何从复杂背景光谱中提取目标光谱信息一直是光谱技术不断努力的方向。本项目拟从理论和实验上研究一种与Radon变换相结合的创新性方法反演测量区域内的温度与浓度分布，同时研究高温复杂光谱干扰情况下提取目标光谱信息的新方法，旨在提高该光谱技术在高温燃烧过程中监测温度和浓度时的分辨率和灵敏度。研究成果不仅在实时燃烧过程监测方面具有重要的直接应用价值，而且在扩展该光谱技术反演测量对象的分布方面也具有普遍指导意义。

中文关键词： 可调谐吸收光谱技术；温度场；浓度场；自适应代数重建；燃烧

英文摘要： As high sensitivity, high resolution, in-situ and non-contact measurement technology, tunable diode laser absorption spectroscopy (TDLAS) has been successfully applied to the air pollution detection, medical diagnostics, and chemical reaction process in recent years.With the development of diode lasers and its advantage of low cost, the TDLAS technology has been an increasingly important method for monitoring of combustion process in the industrial applications. Because the spectrum is easy susceptible to the interference of other gases in NIR, especially hot band of water at high temperature, how to extract useful spectral information from the complex background spectrum has been studied by spectroscoptist until now. The project is planned to investigate the algorithm of spacial distribution measurement of the temperature and concentration at high temperature combined with Radon transform inversion, and to study the novel method of extract useful spectral information from the complex background spectrum in order to improve the sensitivity and resolution of TDLAS at high temperature in combustion process. The results could not only directly be applied in the combustion process monitoring, but also expand the application of TDLAS in spacial distribution measurement which has a certain guiding significance.

英文关键词： tunable diode laser absorption spectroscopy；combustion；modified adaptive algebraic reconstruction；temperature reconstruction；concentration reconstruction