A High-efficiency Wireless Charging Scheduling Strategy Based on Dynamic Gravitational Field

In allusion to the low nodal charging efficiency due to the sensitivity of energy transfer efficiency on the charging distance, a high efficient wireless charging dispatching strategy based on dynamic gravitational field was constructed. Firstly, considering the energy state of the sensing node itself, the nodal residual energy during the arrival of the charging equipment was predicted and a set of value nodes was established to estimate the dead node. Secondly, through leading in the theory of dynamic gravitational field, a multi-node charging algorithm based on the fusion of dynamic gravitational field was proposed, and considering the surplus energy, the consumed power and the distance to the base station of value nodes, the attractive range of the node was defined, and a better charging position was chosen according to the fusion principle of gravitational field. Finally, the simulation of the proposed charging algorithm was conducted, and by means of comparing the proposed charging algorithm with the multi-node rechargeable algorithm and the grid node clustering algorithm it is verified that using the proposed charging algorithm the energy efficiency of the sensor network can be effectively improved, and when reasonable charging delay was ensured the excessive loss of nodal energy can be avoided, so the network sustainability can be evidently enhanced.