Research On Moving Strategy For Mobile Node Based On Potential Filed In Sweep Coverage Of WSN

Wireless sensor network can be applied by the energy efficient status monitoring process effectively. We can use wireless sensor networks with mobile nodes to monitor environment physical parameters, such temperature, humidity, wind speed, air pressure and so on, According to the monitor area in time and space of discontinuity, In this paper, we research on sweep coverage of wireless sensor network and design the moving strategy for the plan of mobile node in sweep coverage.First, through to the information collection discrete and periodic analysis in the energy efficient status monitoring process, Combined with wireless sensor network and its coverage of the present situation, We use sweep coverage of wireless sensor network for energy efficiency status monitoring, and use mobile wireless sensor node for monitoring position information collection. That is to say, in the effective time, mobile node moves to the target position and finish the task of collecting information, And on this basis we describe the scene to sweep cover, Through the choice of the ways of data acquisition methods, Further completed the design of energy efficiency in buildings acquisition system based on sweep coverage of wireless sensor network.Secondly, according to the cost for hardware and maintenance of mobile node is high, in order to reduce the cost and complexity of the system, it is necessary to plan a reasonable route for each mobile node based on potential filed if the number and the moving performance of mobile node are known. This paper analyzes the attractive force between the point of interest (POI) and mobile node from the viewpoint of universal gravitation, introducing the dynamic mass of POI as for the measurement of the urgent grade of the visiting requirement, then analyzes the attractive force between POI and mobile node and repulsive force among the nodes from the viewpoint of magnetic interaction, introducing magnetizing strength of POI as for the measurement of the urgent grade of the visiting requirement.At last, we have a experiment using several sets of data with the different number of POI and the same number of mobile nodes, Experiment results shows that the moving strategy for sweep coverage based on potential filed is effective for the route plan in sweep coverage, At the same time in the last aimed at the problems are summarized and the future are also put forward.