| 乙炔检测系统的设计 |
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| 引用本文： | 李艳萍,伦翠芬,李锦泽,张立红.乙炔检测系统的设计[J].河北科技师范学院学报,2008,22(4):66-69. |
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| 作者姓名： | 李艳萍 伦翠芬 李锦泽 张立红 |
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| 作者单位： | 河北科技师范学院,机械电子系,河北,秦皇岛,066600 |
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| 摘 要： | 在对乙炔气体分子近红外吸收光谱分析的基础上，采用1．52μm波段的LED作为光源，利用旋转双波长滤光片进行波长切换，从而实现差分吸收检测。应用波长调制技术、Ring—down腔技术，通过光纤传输实现乙炔气体质量浓度检测，检测的灵敏度为40×10^-5mg／m^3。
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| 关 键 词： | 乙炔气体检测 系统设计 光纤传感 波长调制 |
The Design of the Acetylene Detecting System |
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| LI Yan-ping,LUN Cui-fen,LI Jin-ze,ZHANG Li-hong.The Design of the Acetylene Detecting System[J].Journal of Hebei Normal University of Science & Technology,2008,22(4):66-69. |
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| Authors: | LI Yan-ping LUN Cui-fen LI Jin-ze ZHANG Li-hong |
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| Institution: | LI Yan-ping,LUN Cui-fen,LI Jin-ze,ZHANG Li-hong(Department of Mechanics & Electronics,HNUST,Qinhuangdao Hebei,066600,China) |
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| Abstract: | Based on the analysis of the near infrared spectral absorption of acetylene, the authors made a system that could successfully achieve differential absorption detection by using 1. 52 μm LED as light source and by utilizing a rotating dual wavelength optical filter to switch the needed wavelengths. The acetylene gas test method was achieved by using wavelength modulation and Ring-down chamber technique transmitted by the optical fiber. Test sensitivity of 4 ×10^-5 mg/m^3 was achieved with this method. |
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| Keywords: | acetylene detection system design sensorius fiber wavelength modulation |
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