Research And Design Of Greenhouse Environment Monitoring System Based On WSN

With the rapid development of science and technology, this technology is also improvement that on the greenhouse environment monitoring. The traditional greenhouse environmental monitoring usually use wired method to monitor site, this method exist wiring trouble, equipment mobility is not strong, anti-interference ability is poor, measurement accuracy is not high, at the same time to update and maintenance of the system bring a lot of inconvenience. With the rapid development of wireless sensor network (WSN) technology, the ZigBee technology greatly promoted the WSN technology applied in the greenhouse environment monitoring system based on the IEEE802.15.4protocol standard, the system has low cost, low power consumption, real-time and convenient and so on, as well as it has a good development and application prospect.This paper puts forward a kind of greenhouse environment monitoring system based on WSN. It can be monitored at the real-time that temperature and humidity and light intensity data of the greenhouse environment through the software and hardware. WSN includes sensor nodes and sink node. The sensor node is responsible for collecting the greenhouse environment various factors and forwarding child node data. The sink node is mainly responsible for setting up a network and sending various commands. Meanwhile, collect terminal sensor nodes data and upload it to the monitoring center through RS232serial. The ZigBee wireless communication module be made up of RF single chip. The system is completed by using the new generation CC2530soc of TI firm. It uses2.4Ghz carrier frequency and rod antenna. The sensor node is made of temperature and humidity sensor SHT10and photoelectric sensor BPW34S. System design of the software includes the design of node and monitoring center interface. The design of the node software includes coordinator nodes and sensor nodes. The protocol stack adopts zstack-CC2530-2.3.0-1.4.0version of TI firm. The program is programmed in the IAR Embedded Workbench development environment by C language. The monitoring center interface program was designed by the C++language in Visual Studio2005 development and operation environment. It provides the user with a convenient for data receive and data storage, real-time understanding the greenhouse environment condition as well as realize the quantitative management of greenhouse.Tested showed that ZigBee and WSN technology is feasible in the greenhouse environment monitoring system, meanwhile it meets the system deigned requirements; The system has the characteristics such as stable function, high reliability, easy to deploy and maintain, as well as easy to expand. It provides a new solution for greenhouse environment monitoring intelligent.