| 红外甲烷气体浓度检测系统设计 |
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| 引用本文： | 朱红秀,孙连昆,王忠华,聂哲,刘欢.红外甲烷气体浓度检测系统设计[J].应用光学,2014,35(5):890-894. |
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| 作者姓名： | 朱红秀 孙连昆 王忠华 聂哲 刘欢 |
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| 作者单位： | 1.中国矿业大学 机电与信息工程学院,北京100083 |
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| 基金项目： | 国家高技术研究发展计划(863计划)资助项目(2008AA062201) |
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| 摘 要： | 为了精确测量甲烷气体的体积浓度，采用平行红外光源IRL715EN-PR设计了红外甲烷气体检测系统。整个检测系统由硬件电路和软件系统组成。在软件程序设计上设计了一种关于信号处理的新算法，同时设计了中断喂狗程序，大大延长了看门狗定时复位时间。利用Matlab对数据进行了拟合，得到了系统的浓度和电压的函数关系。实验表明，在体积浓度在0%~4%范围内，系统最大相对误差小于1%。
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| 关 键 词： | 红外甲烷气体检测系统 模拟信号调理电路 单片机 看门狗 数据拟合 |
| 收稿时间： | 2014/4/2 |
Design of infrared methane gas concentration detection system |
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| Institution: | 1.Department of Electromechanics and Information Engneering,China University of Mining and Technology,Beijing 100083,China |
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| Abstract: | In order to accurately measure the volume of methane gas concentration, we adopted the parallel infrared illuminant, IRL715EN-PR, to design an infrared methane gas detection system . The whole detection system consisted of hardware circuit and software system. We put forward and implemented a new algorithm about signal processing. At the same time, a feeding dog in interrupt service routine (ISR)program was designed so as to greatly extend the watchdog timer reset time. Using Matlab for data fitting, we achieved a function of concentration and voltage of the system. Experiments show that the volume concentration is in the range from 0% to 4%, the greatest relative error of the system is less than 1%. |
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| Keywords: | infrared methane concentration detection system analog signal conditioning circuit single chip microcomputer watchdog data fitting |
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