| 可调谐半导体激光吸收光谱测温谱线选择 |
| Tunable Diode Laser Absorption Spectroscopy Temperature Measurement Line Selection |
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| 中文摘要: |
| 可调谐半导体激光吸收光谱（Tunable Diode Laser Absorption Spectroscopy, TDLAS）作为非接触光学测量手段，在燃烧诊断、推进系统研发中应用广泛，而吸收谱线对的选择是采用TDLAS技术进行燃气温度测量的基础和关键一步。在扫描波长-直接吸收法测量H2O温度的实验中，首先系统地研究了谱线选择的基本原则和实现步骤，对选择原则中各指标的量化进行了重点分析；然后对中心频率在7000~7500 cm-1范围内的水分子吸收谱线进行研究和筛选；最后结合数值模拟进行分析，选择了7022.7091、7444.3707 cm-1和7185.5962、7444.3707 cm-1两对谱线，为TDALS温度测量系统设计提供依据。 |
| 英文摘要: |
| Tunable Diode Laser Absorption Spectroscopy (TDLAS) is a non-contact optical measurement method which is widely used in combustion diagnosis and propulsion system development. The selection of the absorption line pairs is the basis and key of gas temperature measurement using TDLAS. In the experiment of scanning wavelength-direct absorption method for measuring the temperature of H2O, the basic principles and implementation steps of spectral line selection are systematically studied, and the quantification of each index in the selection principle is analyzed. Then the absorption lines of water molecules in the range of 7000~7500cm-1 were studied and screened. Finally, the numerical simulations were used to analyze and two line pairs were selected: 7022.7091, 7444.3707 cm-1 and 7185.5962, 7444.3707 cm-1, which provided the basis for the design of TDALS temperature measurement system. |
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| 中文关键词: 光谱学 可调谐半导体激光吸收光谱 扫描波长-直接吸收法 双线法测温 谱线对选择 |
| 英文关键词:spectroscopy tunable diode laser absorption spectroscopy scanning wavelength-direct absorption method two-line method for temperature measurement line pair selection |
| 基金项目: |
| DOI：10.11823/j.issn.1674-5795.2019.06.03 |
| 引用本文：李春圆1，王中宇1，常海涛2，蔡静2.可调谐半导体激光吸收光谱测温谱线选择[J].计测技术,2019,39(6):. |
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