Research On Energy Supplement Strategy For Rechargeable Wireless Sensor Network

Wireless sensor network is composed of spatial distributed autonomous sensor nodes and sink nodes,which has been greatly developed and applied in recent years.Traditional wireless sensor networks use batteries with limited energy for wireless communication.With the development and popularization of energy transmission technology,traditional wireless sensor networks are gradually developing in the direction of rechargeable wireless sensor networks.In rechargeable wireless sensor networks,energy balance and energy supplement have always been the focus of the research.How to maximize the balance of energy consumption,efficiently replenish energy and prolong the network life cycle is one of the main objectives of scholars’ research.The clustering routing protocol can balance the energy consumption of nodes and prolong the life cycle at the same time of data forwarding.The purpose of charging planning is to ensure efficient and timely power supply for nodes,so that the life of nodes can continue.In previous studies,charging planning and data forwarding were discussed separately.In this thesis,the two are designed together for the first time,based on the proposed the structure model of cluster will be the effective fusion,the proposed non-uniform routing protocol based on dynamic competition,the energy equilibrium joint charging priority strategy,and design more efficient and timely to ensure charging car charge,to better balance the node energy consumption and prolong network life time.This thesis has proposed the Energy Balance non-uniform Routing protocol(EBUR)based on dynamic competition.The ideal communication radius and perfect neighbor node are defined,and a threshold formula is proposed to comprehensively measure the relative residual energy,node density within the cluster and sink degree of the same cluster node.Then,by using an improved dynamic competition radius,it elected the real cluster heads from the candidate cluster heads.When EBUR builds multi-hop routing,the next hop node was selected by comprehensively considering the communication energy consumption,forward transmission distance,and the remaining energy between clusters.The experimental results show that EBUR is highly stable and effectively extends the network life cycle,and provides a balanced environmental basis for charging strategy.This thesis has proposed the Charging Strategy of heterogeneous Clustering(CSUC),which USES clusters as units to calculate the Charging priority and form a sequence of waiting to charge based on the uniform Clustering based on the joint priority algorithm of geographical location and the remaining time.In the end,an algorithm for the number of charging cars is proposed,which divides the charging sequence to calculate the number of charging cars in the network.The simulation results show that the combined priority charging algorithm based on non-uniform clustering can effectively shorten the charging path and reduce the charging times,and it has higher network utility and can supplement energy more efficiently.