Contactless battery charger for composite humidity and temperature wireless sensors

Abstract

This paper presents the analysis and design of a DC-DC series resonant power converter used as a contactless battery charger (5V DC − 1A) for a mobile electronic device. The system is enclosed in a sealed spherical shell containing temperature and humidity wireless sensors and related electronic circuitry for real time composting process monitoring.Some particular characteristics of the device and its physical dimensions impose a maximum distance between the primary and the secondary transformer windings of 20mm. For transformer type core and windings configuration selection criteria, an experimental characterization of loosely coupled power transformers was evaluated.Both simulation and experimental results, obtained in a 150kHz laboratory prototype, were used as evidence of the developed theoretical models and analysis.

Research and Design of Capsule-like Robot Wireless Powering System Based on Class-E Inverter

“…Through the integration of wireless power supply function in vitro, It could not only reduce the volume, but also provided a large number of continuous power to lay a solid foundation for the capsule robot functions more perfect, high precision measurement. Countries such as Japan, the United States and Europe had carried out extensive and in-depth research technology of wireless power supply system , and a large number of tests had been carried out [1][2][3][4][5][6][7]. The capsule robot although wireless power supply system was one of the wireless power, but due to the particularity of the application and structure, its applications was different from others.…”