The Greenhouse Environmental Parameters Monitoring System Based On ZigBee Technology

The traditional method of controling the temperature of agriculture greenhouses is generally used by wire communication technology. However, wire communication has some disadvantages that the cable is relatively complex to be layed, easy to aging, low reliability and difficult to be maintained, it is difficult to apply and extend the intelligent measurement technology in the actual agricultural production.As a new wireless communication technology, ZigBee technology has the advantages of short transmission distance, low complexity, low power consumption, low data rate, as well as the low cost. It is widely used in the logistics, food traceability, environmental monitoring, etc. It is very suitable for Agricultural greenhouse environment control system with small amount of data transmission, inconvenient wiring for long distance and data acquisition in wide coverage, and inconvenient frequent battery replacement or charge.The conceptual design of the greenhouse environmental parameters monitoring system based on ZigBee technology is put forward by analyzing the specifics of ZigBee technology and the design requirements of the greenhouse environmental parameters monitoring system. Through the sufficient demonstration of the test technology index and test method, we design the hardware system of data acquisition node and the coordinator node based on CC2530, including temperature and humidity measurement module, carbon dioxide detection module, the light intensity detection module, roof control module, shading network control module, etc. In the integrated development environment IAR7.51A system, we complete the software of the ZigBee protocol stack,the coordinator node and terminal node.we also finish the PC monitoring software using Visual Basic. Finally, the hardware and software is debuged, and the system is running nomally.The test results shows that each data acquisition node is working properly, collecting the corresponding parameter, wireless network of each sensor node and the coordinator node is normal, transmitting data correctly; low power consumption of the terminal nodes meet the system demand.The master of the system can realize real-time display of the environmental data collected by nodes, draw each Parameter’s variation curve, preserve the historical data, and output a control signal to control the corresponding execution mechanism, which proves that the design of this system is reasonable.Because this temperature control system is characterized by low cost, small volume, low power consumption, easy to deploy, ad hoc network, it can be applied to monitor by the different sensors in the warehouse, the mine, the airport, the port, the station and other occasions.