Application Of Zigbee Based Wireless Sensor Network In The Smart Environmental Monitoring System Of The Hogpen

In the production of intensive feeding swine, the overall health and growth rate of the swinery, the efficiency of feed usage are directly affected and restricted by the environment of the pigsty. Providing a good environment for the pigs is one of the most effective measures to promote the swinery's productivity and the ability of disease prevention. The factors that effect the air quality in the swinery include temperature, humidity, airdraught, light, concentration of harmful gases such as H2S,NH3, dust and noises and so on. It is of great meaning to monitor and control the air quality in the pigsty.Based on the demand of a pig-raising enterprise, the paper designed a smart environment monitoring system which based on the Zigbee technology for the pigsty. The main work include the integrated framework that consists of networks, communication protocol, wireless sensor nodes and data management. The real time data collection includes collecting of the temperature, humidity, light and the ammonia concentration date. The system is featured with low cost, low power consumption, easy maintenance. In the hardware circuit design, it uses the connectportX2 produced by Digi Company as the network coordinator, and uses the universe version of wireless sensor devices based on xbee module which is produced by Wuhan Meshleader Technology Co., Ltd. as terminal device and router to build mesh net. Each component of the circuit is displayed appropriately on the basis of 2.4G high-frequency specifications, considering the interference of noise, so that the RF antenna can reach to the best position and the communication distance and communication quality of Zigbee devices can be guarenteed.In the software design, by studying the IEEE 802.15.4 standard protocols and the Zigbee specification, and by using the connectportX2 bulit-in Python Engine, the forming network function of Zigbee network coordinator and the operation of the procedues are achieved, the Zigbee routers and terminal devices join a network and the working procedures are programmed under Python2.4 environment. Debugging Zigbee network coordinator, routers, terminal devices, making it compose the Z-mesh network which is suitable for the smart pigsties environmental monitoring system . Programming the computer monitoring software, monitoring the data in real time and transferring the collected data accurately under the C # environment. The use of SQL Server 2000 regarding submitted information to the host computer for storage has promoted the quality and efficiency of monitoring.