Application Study of Greenhouse Environment Monitoring System Based on ZigBee Technology

Against the demand of intelligent greenhouse construction of facility agriculture, greenhouse environment monitoring system is developed. The system contains three-layer architecture: sensor network layer at the bottom, data transmission convergence layer in the middle and monitoring application layer on the top, which is different from design idea of the existing system architecture. The bottom layer uses ZigBee wireless communication technology to construct wireless sensor network, and node type contains coordinator, router and acquisition terminal. Acquisition terminal is distributed in each greenhouse to collect data and play the role of wireless transmission, and router plays the function of data forwarding as the bridge of acquisition terminal and coordinator. Middle layer is composed of monitoring software developed by LabVIEW software of NI Company and coordinator, which is used to gather data from the bottom layer. The top layer is comprehensive monitoring platform developed by Java language, which is used to gather greenhouse data of all plantation bases in one region, thereby providing comprehensive information service for government, enterprise and farmer. Greenhouse environment monitoring system realizes data collection and sharing of greenhouse environment information（air temperature, air humidity, light intensity and carbon dioxide concentration）. Via test verification, the system’s operation is stable, with certain application value.