Qi-Ferry: Energy-Constrained Wireless Charging in Wireless Sensor Networks

Provided by: Institute of Electrical & Electronic Engineers
Topic: Mobility
Format: PDF
Using the technology of wireless energy transfer, the paper proposes Qi-ferry which physically carries energy, roves a wireless sensor network, and wirelessly charges sensor nodes to extend their lifetime. To optimize the usage of the entire energy reserve on a Qi-ferry, both the movement of the Qi-ferry itself and its wireless charging of sensor nodes share the same pool of battery energy reserve, resulting in a tradeoff between how many sensors the Qi-ferry could charge and how far it could travel. The paper formulates an energy-constrained Qi-ferry wireless charging problem in wireless sensor networks, which maximizes the number of sensors wirelessly charged by a Qi-ferry subject to an energy constraint limiting the total energy consumed by the Qi-ferry for both moving and charging.

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