Research On Residual Energy And Energy Scheduling Model Of WRSNS

Wireless rechargeable sensor networks(WRSNs)is generated by combining magnetic coupling wireless charging technology with wireless sensor network technology,and provides new ways to solve problem of nodes energy in wireless sensor network.For a large number of charged nodes in one-to-one wireless rechargeable sensor network,how to select charging nodes directly relates to reliability of data transmission and robustness of network.In view of characteristics of one-to-one wireless rechargeable sensor network,residual energy model of node and charging sequence scheduling strategy of network node are researched from network routing protocol and node energy consumption.The research works are as follows.The Leach routing algorithm is transplanted into the WRSNs,but residual energy of nodes and distance between nodes and sink node are not taken into account in Leach routing algorithm,a Leach clustering routing algorithm of combining energy with distance(LeachED)is proposed.The algorithm takes residual energy of nodes and distance between nodes and sink node as factors,optimizes communication mode and selection threshold of cluster head node.In terms of number of surviving nodes,data throughput and energy consumption of network nodes,performances of the LeachED algorithm under different control factors and the Leach algorithm are simulated.Simulation results show that the LeachED algorithm is better in balancing energy consumption of network nodes than the Leach algorithm.Energy consumption of network nodes is different for their different functions.Network nodes are divided into three types,that is,common sensor nodes,cluster head nodes and relay cluster head nodes.Energy consumption of nodes is theoretically analyzed,and their time invariant residual energy model is constructed.The simulation results,based on the constructed residual energy model,show that energy consumption of different types of nodes is different,which provides basis for constructing nodes scheduling model.In the WRSNs based on the LeachED algorithm,combined residual energy model with characteristics of magnetic coupling wireless energy transmission,charging "grid" is proposed.Mobile charging order of SenCar node is determined by analyzing importance level of charging grid and node,validity of G_SCC strategy is verified by survival numbers of nodes and robustness of routing in network.