The Research And Design Of Framland Environment Information Acquisition System Based On WSN

In recent years, our country began to promote the application and development of the precision agriculture in our country. The core of precision agriculture is to obtain the data of the farm environment which effect the crops growth that including the soil’s temperature and humidity, light intensity, soil’s fertility, plant diseases and insect pests, soil’s moisture.According to the crops needs,farm manager can apply fertilizer and irrigate the land rationally. Achieve the purpose that using resource rationally, reducing the production costs, improving the ecological environment and the yield and quality of crops finally.If we want to obtain the data of farmland environment information, then we need a set of system which is used to collect the information. This paper presents an automatic-acquisition program which is based on the wireless sensor networks combined and GPRS, and the wireless sensor network of the program is based on Zigbee technology.In this paper, the author researched the data-acquisition work in the temperature,humidity and illumination, in the design of acquisition nodes using CC2530 as the processing chip, SHT10 as temperature and humidity sensors, GL558 photosensitive resistance as the light sensor.By the software named NS2,the paper simulated the deployment methods of the nodes including quadrangle and hexagon, by comparing the merits in the performance of the two deployment methods in energy consumption, packet loss rate and the average end-to-end delay time, then ultimately determine the hexagonal as the deployment of the acquisition nodes, and determine the deployment height and the effective transmission distance of the acquisition nodes in the practical experiments.The paper developed the monitor software by the Microsoft Visual Studio 2008 and the Microsoft ACCESS 2010, it has five modules including system parameter setting, real-time network topology, real-time data of the nodes, real-time data curve display and historical data query.In practical experiments, the basic functions to achieve the desired, such as node network, information collection and remote transmission, historical data query etc.