Survey on Recharging Methods of Sensor Nodes in Wireless Rechargeable Sensor Networks

A wireless rechargeable sensor network (WRSN) has a collection of sensor nodes that are deployed randomly. The energy efficient wireless sensor network design is one of the most crucial challenges today. Because not easy to recharge sensor nodes in different types of WRSN. Normally challenging coherent recharging methods are only achieves energy efficiency of sensor nodes. In WRSNs, the mobile chargers are used to recharge the sensors. The optimal solution is to reach the node and to recharge within dedication time duration and range of conditions. The mobile charger takes the shortest path which gives best result to route all nodes and recharge them after choosing proper anchor point. Many energy efficient recharging methods are available, it concentrates both on sensor nodes recharging and data collection. In this paper some feasible schemes are explored to visit all the nodes in shortest path and perform the action and also the performances of the different scheme are compared.