| 基于红外吸收光谱的瓦斯气体浓度检测技术 |
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| 引用本文： | 罗达峰,杨建华,仲崇贵.基于红外吸收光谱的瓦斯气体浓度检测技术[J].光谱学与光谱分析,2011,31(2). |
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| 作者姓名： | 罗达峰 杨建华 仲崇贵 |
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| 作者单位： | 南通大学理学院,江苏,南通,226001 |
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| 基金项目： | 国家自然科学基金项目(10974104); 南通大学自然科学研究项目(06Z005)资助 |
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| 摘 要： | 针对现有矿井瓦斯传感器的缺点,基于红外光谱吸收原理,采用差分吸收技术设计了红外瓦斯气体浓度探测系统。该系统采用单光路吸收气室和单光路双波长探测技术,利用差动放大电路为核心的微弱信号处理电路实现瓦斯浓度输出信号的检测,并采用线性关系式拟合瓦斯浓度和输出电压的关系曲线,实现了对瓦斯浓度的全量程精确探测。实验表明,该系统的测量误差小于2%,具有很高的测量精度,具备了煤矿应用的基础。
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| 关 键 词： | 红外光谱吸收 差分吸收 线性关系式 |
Detection Technology of Methane Gas C0ncentration Based on Infrared Absorption Spectrum |
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| LUO Da-feng,YANG Jian-hua,ZHONG Chong-gui.Detection Technology of Methane Gas C0ncentration Based on Infrared Absorption Spectrum[J].Spectroscopy and Spectral Analysis,2011,31(2). |
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| Authors: | LUO Da-feng YANG Jian-hua ZHONG Chong-gui |
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| Institution: | LUO Da-feng,YANG Jian-hua,ZHONG Chong-gui School of Science,Nantong University,Nantong 226001,China |
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| Abstract: | According to the disadvantages of current methane sensor in coal mine,the infrared methane concentration detection system based on the principle of infrared spectrum absorption was designed using differential absorption technology.In the system single light beam absorbing cell and single light beam and double wavelengths technology are adopted.Differential amplifier circuit serves as the core of faint signal processing circuit that detects the output signal of methane concentration,and linear formula fits t... |
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| Keywords: | Infrared absorption spectrum Differential absorption Linear formula |
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