Influence of exposure guidelines on the design of on-body inductive power transfer

Clare, Lindsay; Worgan, Paul; Stark, Bernard H.; Adami, Salah Eddine; Coyle, David

Abstract

Designers of on-body health sensing devices with inductive power transfer (IPT) face a number of trade-offs. Safe exposure limits should be maintained, and protective housing and padding are generally needed; however, these impose compromises on the power-transfer-system design. This paper analyses these trade-offs and proposes a design route to achieving high power transfer in the presence of field restrictions and separations for padding or housing materials. An IPT system using a Class D coil-driver and switched-mode power-conditioning is designed to provide regulated d.c. and energy storage. Compliance with ICNIRP 1998 guidelines is demonstrated, at a power level that is sufficient to power typical on-body medical sensing devices.

• Presentation Conference Type: Conference Paper (published)
• Conference Name: 2015 IEEE Wireless Power Transfer Conference (WPTC)
• Start Date: May 13, 2015
• End Date: May 15, 2015
• Online Publication Date: Jul 2, 2015
• Publication Date: Jul 2, 2015
• Deposit Date: Dec 3, 2021
• Publicly Available Date: Dec 3, 2021
• Publisher: Institute of Electrical and Electronics Engineers (IEEE)
• Book Title: 2015 IEEE Wireless Power Transfer Conference (WPTC)
• ISBN: 9781467374477
• DOI: https://doi.org/10.1109/wpt.2015.7140171
• Public URL: https://uwe-repository.worktribe.com/output/8206227