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介绍了一种采用传感技术、嵌入式技术与无线远程通信技术相结合的水稻田甲烷在线监测系统。该系统以STM32F103VB处理器及甲烷(CH_4)气体传感器DynamentMSHia-HC为核心,集成GPRS无线通信等功能模块,实现对水稻田甲烷气体排放实时在线监测。首先,介绍了系统的总体设计与核心结构,包括系统的硬件结构与软件结构;其次,对系统进行性能验证实验。结果表明:该系统具有良好的稳定性,能够在0~5%量程内对甲烷浓度进行实时在线精确监测,满足水稻田环境下甲烷气体排放速率及单位面积的排放通量的实时监测,具有广阔的应用前景。
A methane online monitoring system based on sensor technology, embedded technology and wireless telecommunication technology is introduced. The system is based on the STM32F103VB processor and methane (CH_4) gas sensor DynamentMSHia-HC, and integrates functional modules such as GPRS wireless communication to realize real-time on-line monitoring of methane emission from paddy fields. First of all, the overall design and core structure of the system are introduced, including the hardware and software structure of the system. Secondly, the performance verification of the system is carried out. The results show that the system has good stability and real-time on-line accurate monitoring of methane concentration in the range of 0-5%, which can meet the real-time monitoring of methane gas emission rate and unit discharge flux in paddy field environment. The application prospects.