review · IEEE Transactions on Sustainable Computing
Wireless power transfer offers a mechanism to supply energy to resource-constrained Internet of Things devices without relying on physical wires or standard battery replacements. This approach has potential applications across sectors such as healthcare, transportation, industrial automation, and smart cities. A comprehensive review outlines the core technologies within wireless power transfer, detailing their classifications, operational advantages, and inherent limitations. In addition, the work examines recent wireless charging scheduling schemes developed specifically for wireless sensor networks. These schemes are analysed through their underlying categories, performance metrics, and suitability for specific operational settings. Finally, the synthesis highlights emerging research trends and practical opportunities at key technological intersections where wireless charging can be effectively integrated.
Powering millions of connected sensors presents a logistical and environmental hurdle due to finite battery life and cable constraints. Wireless power transfer can provide continuous, cable-free energy to devices in healthcare monitoring, transport systems, and urban infrastructure, helping to reduce electronic waste and maintenance requirements while maintaining continuous system operations across varied environments.
The review identifies applications in healthcare, transportation, automation, and smart cities, targeting users and developers of wireless sensor networks and connected devices. Because this work is a secondary review of existing technologies and scheduling algorithms rather than a direct implementation or trial, it sits at an informational, early-to-applied research stage, helping system designers select appropriate charging architectures.
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Wireless Power Transfer (WPT) is a disruptive technology that allows wireless energy provisioning for energy-limited IoT devices, thus decreasing the over-reliance on batteries and wires. WPT could replace conventional energy provisioning (e.g., energy harvesting) and expand to be deployed in many of our daily-life applications, including but not limited to healthcare, transportation, automation, and smart cities. As a new rising technology, WPT has attracted many researchers from academia and industry about WPT technologies and wireless charging scheduling algorithms. Therefore, in this paper, we review the most recent studies related to WPT, including classifications, advantages, disadvantages, and main domains of application. Furthermore, we review the recently designed wireless charging scheduling algorithms (schemes) for wireless sensor networks. Our study provides a detailed survey of wireless charging scheduling schemes covering the main scheme classifications, evaluation metrics, application domains, advantages, and disadvantages of each charging scheme. We further summarize trends and opportunities for applying WPT at some intersections.
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DOI: 10.1109/tsusc.2024.3380607
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