Movable-charger-based planning scheme in wireless rechargeable sensor networks

In order to extend basic functions of wireless sensor network (WSN), many researchers have begun to study rechargeable wireless sensor networks that use of Wireless Charging Technology to supply power for sensor nodes so that the wireless sensor networks have the sustainability. The main classifications of wireless charger antenna are Directional Antenna and Unidirectional Antenna respectively. We combine the advantages of charging antenna and the movable feature via motor to improve the problem that the existing covered area are less but including excessive number of sensors. In this way, we can achieve effective arrangement to cover all target sensor nodes by each chargers. In this paper, we propose a heuristic algorithm called Movable-Charger-based Algorithm (MCBA). It uses overlapping times as a main principle thus we can find out a minimum number of deployed chargers. Finally, the simulation results show that our proposed method can effectively deploys the position of chargers according various status of the factory.