| 可调谐激光吸收光谱应用于气体二维浓度分布重建研究 |
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| 引用本文： | 邢大伟,王飞,姜治深,王超,张海丹,严建华,岑可法.可调谐激光吸收光谱应用于气体二维浓度分布重建研究[J].光学技术,2013(3):241-246. |
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| 作者姓名： | 邢大伟 王飞 姜治深 王超 张海丹 严建华 岑可法 |
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| 作者单位： | 浙江大学能源清洁利用国家重点实验室 |
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| 基金项目： | 国家重点基础研究发展计划(973计划)(2009CB219802);浙江省自然科学基金项目(R1100395);“高等学校学科创新引智计划”资助项目(B08026) |
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| 摘 要： | 基于可调谐半导体激光吸收光谱技术(TDLAS),设计了气体浓度二维分布重建系统。将单路可调谐激光分为24路,交叉穿过目标区域,得到24组直接吸收信号(DA),并采用代数迭代法(ART)计算得到目标区域气体浓度二维分布。搭建了二维气体浓度分布测量试验台,利用中心波长在1.653μm的DFB激光器作为光源,选取HITRAN数据库CH4的2v3带R(3)线作为计算谱线进行数值模拟和试验验证,并对重建结果进行了误差分析。结果表明重建系统能很好的实现气体二维浓度分布重建测量。
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| 关 键 词： | 光学测量 可调谐激光吸收光谱 气体二维浓度 代数迭代重建 |
Two-dimensional reconstruction for gas concentration with tunable diode laser absorption spectroscopy |
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| XING Dawei,WANG Fei,JIANG Zhishen,WANG Chao,ZHANG Haidan,YAN Jianhua,CEN Kefa.Two-dimensional reconstruction for gas concentration with tunable diode laser absorption spectroscopy[J].Optical Technique,2013(3):241-246. |
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| Authors: | XING Dawei WANG Fei JIANG Zhishen WANG Chao ZHANG Haidan YAN Jianhua CEN Kefa |
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| Institution: | (State Key Laboratory of Clean Energy Utilization,Zhejiang University,Zhejiang Hangzhou 310027,China) |
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| Abstract: | A gas concentration reconstruction system is designed based on tunable diode absorption spectroscopy(TDLAS).A single diode laser is split into 24 beams crossing the target region.The 24 direct absorption(DA) signals are used to calculate the two-dimensional gas concentration distributions in the target region via algebraic reconstruction technique(ART).A test stage is established and a DFB laser with the central wavelength 1.653μm is chosen as the light source.The absorption transition R(3) in the second overtone band of methane is selected from a HITRAN database.Based on these considerations,a numerical simulation and a verifying test are conducted as well as the error analysis.The results show relatively great fidelity of the two-dimensional gas concentration distribution reconstruction. |
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| Keywords: | optical measurement tunable diode laser absorption spectroscopy(TDLAS) two-dimensional gas concentration algebraic reconstruction technique |
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