Mobile Energy Transfer in Internet of Things

Abstract

Internet of things (IoT) is powering up smart cities by connecting all kinds of electronic devices. The power supply problem of IoT devices constitutes a major challenge in current IoT development, due to the poor battery endurance as well as the troublesome cable deployment. The wireless power transfer (WPT) technology has recently emerged as a promising solution. Yet, existing WPT advances cannot support free and mobile charging like Wi-Fi communications. To this end, the concept of mobile energy transfer (MET) is proposed, which relies critically on an resonant beam charging (RBC) technology. The adaptive (A) RBC technology builds on RBC, but aims at improving the charging efficiency by charging devices at device preferred current and voltage levels adaptively. A mobile ARBC scheme is developed relying on an adaptive source power control. Extensive numerical simulations using a 1,000mAh Li-ion battery show that the mobile ARBC outperforms simple charging schemes such as the constant power charging, the profile-adaptive charging, and the distance-adaptive charging in saving energy.

arXiv comment8 pages, 11 figures

Cited by in corpus (7)

• Fair Scheduling in Resonant Beam Charging for IoT Devices
• Resonant Beam Communications with Photovoltaic Receiver for Optical Data and Power Transfer
• Composing Energy Services in a Crowdsourced IoT Environment
• TDMA in Adaptive Resonant Beam Charging for IoT Devices
• Earning Maximization with Quality of Charging Service Guarantee for IoT Devices
• Channel-Dependent Scheduling in Wireless Energy Transfer for Mobile Devices
• Wireless Power Transmitter Deployment for Balancing Fairness and Charging Service Quality