红外瓦斯无线传感检测系统设计与实现

Design and Implementation of Wireless Sensor Detection System on Infrared Methane Gas

针对煤矿瓦斯测量精度问题,在研究矿井瓦斯检测技术的基础上,基于红外光谱吸收原理,采用无线传感网络技术,设计了红外瓦斯无线传感检测系统,该系统采用差分检测技术,利用数据拟合解调出出瓦斯浓度,并利用ZigBee无线网络技术组建检测网络,实现了矿井瓦斯浓度的精确探测;实验结果表明,通过对11组数据进行测量和比较,红外瓦斯无线传感网络检测系统的平均绝对误差为0.091%,实现了瓦斯浓度的全量程精确检测,具有探测灵敏度高、测量误差小、传输距离远和组网灵活等优点,能够满足矿井瓦斯浓度检测的需求,具备了实用基础。

For the problem of measurement accuracy in coal mine, the infrared methane gas wireless sensor detection system based on in frared spectrum absorption is designed by wireless sensor technology after researching the mine gas detection technology. The system adopls the differential sensing technology, fitting the demodulation of the gas concentration with the measured data and establishing a wireless nel work with ZigBee technology, which implements an accurate detection of the coal mine gas concentration. The experimental results show that the average absolute error of the wireless sensor network detection system on infrared methane gas is 0. 091% by the measurement and corn parison for 11 sets data, which realizes the accurate detection of the full range of gas concentration. And the system has the advantages of high detection sensitivity, small measurement error, transmission long distance and flexible networking that can meel the demand for coal mine gas concentration detection with a practical foundation.