EFFICIENT WIRELESS CHARGING PAD DEPLOYMENT IN WIRELESS RECHARGEABLE SENSOR NETWORK

Rapid progress in wireless power transfer technologies (WSNs) is enabling novel energy solutions for vehicles and new technical achievements that make use of wireless sensor networks. In most modern setups for WRSNs (SNs), one or more wireless charging vehicles (vehicles) provide service to sensor nodes. However, some SNs will never be completely charged due to vehicle speed and off-road limitations, which will reduce the longevity of the networks. As part of our study towards developing a new WRSN model, we have designed various wireless charging pads (pads) that will be used to recharge the drone when it runs out of juice before it reaches the next stop. Our solution takes into account the fact that the drone’s battery life is limited and handles the problem of charging at the same time. As a result, we formulate a wireless charging pad deployment problem with the goal of using the minimum possible number of pads to ensure that the drone can establish at least one feasible routing path to every SN in the given WRSN. Three graph-theoretic heuristics and one geometric heuristic are used to solve this problem. As an additional innovation in drone scheduling, we provide a shortest multi-hop path mechanism for the drone to complete charging requests through pads. To ensure the proposed strategies are sound, we run extensive simulations. The results compare and demonstrate the effectiveness of the proposed methodologies with respect to network density, area, and maximum flying distance. Sensor node, wireless rechargeable sensor networks, and wireless power transfer are some examples of