Design of Crop Environmental Monitoring System Based on ZigBee

With the development of Internet of things (iot) technology and and sensor technology, a crop Environmental monitoring system based on ZigBee was designed to improve the growing environment and yield of crops.The system uses two development boards, one as a host, and the other as a slave. various sensors and ZigBee to communicate with each other. The host is equipped with display screen, single-chip microcomputer, buzzer, key, etc. Its functions are to display the detected data, alarm for detecting abnormal information and threshold setting of soil moisture and light intensity. The slave is equipped with single-chip microcomputer, temperature and humidity sensors, soil humidity sensors, photoresistor and relays. Its functions are to achieve the collection of environmental data, the relay for controlling the water motor and lighting lamp. ZigBee module is used to realize the communication between microcontrollers.The system can collect and display real-time data of temperature and humidity, soil moisture and light intensity of crops, and according to the threshold set to achieve the automatic opening of the pump irrigation, automatic lighting and abnormal conditions alarm functions. The test results show that the system can effectively reduce the cost of crop Environmental monitoring and improve monitoring efficiency.In addition to the system can monitor the environment 24 hours a day, find the abnormal situation and carry on the early warning and the corresponding automatic treatment, improve the efficiency of crop production management. It also has strong expansibility.