The Wireless Intelligent Controller of Greenhouse Based on Zig Bee

In order to achieve the informatization and automatic control need of Greenhouse, an intelligent wireless controller was developed based on ZigBee. The hardware and software of network were introduced. JN5139 modules produced by Jennic Company were used as microcontroller. The system is in star topology with one coordinator and several End Devices. End Devices are responsible for data collecting, preprocessing and wireless transmission. Wireless intelligent controller's function is collecting, processing and managing environmental factors and Eco-physiological characteristic values of plant in Greenhouse (soil temperature, leave temperature, light content, growth speed of plant, and water content of soil). Intelligence voice module provides real-time production advice according to data collected from all wireless nodes. The test results show that the coordinator received all 60 groups of data of each sensor in one hour test, and all data are quite correct without lost, so it proves that both software and hardware of the system can work stable and reliable. The system can fulfill the need for monitoring and controlling of environmental factors and Eco-physiological characteristic values of plant of Greenhouse.