Inductive power transfer for on-body sensors defining a design space for safe, wirelessly powered on-body health sensors

Paul Worgan, Lindsay Clare, Plamen Proynov, Bernard H. Stark, David Coyle

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

6 Citations (Scopus)
218 Downloads (Pure)

Abstract

Designers of on-body health sensing devices face a difficult choice. They must either minimise the power consumption of devices, which in reality means reducing the sensing capabilities, or build devices that require regular battery changes or recharging. Both options limit the effectiveness of devices. Here we investigate an alternative. This paper presents a method of designing safe, wireless, inductive power transfer into on-body sensor products. This approach can produce sensing devices that can be worn for longer durations without the need for human intervention, whilst also having greater sensing and data capture capabilities. The paper addresses significant challenges in achieving this aim, in particular: device safety, sufficient power transfer, and human factors regarding device geometry. We show how to develop a device that meets stringent international safety guidelines for electromagnetic energy on the body and describe a design space that allows designers to make trade-offs that balance power transfer with other constraints, e.g. size and bulk, that affect the wearability of devices. Finally we describe a rapid experimental method to investigate the optimal placement of on-body devices and the actual versus theoretical power transfer for on-body, inductively powered devices.

Original languageEnglish
Title of host publication2015 9th International Conference on Pervasive Computing Technologies for Healthcare (PervasiveHealth)
Subtitle of host publicationProceedings of a conference held 20-23 May 2015 at Istanbul, Turkey
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages177-184
Number of pages8
ISBN (Print)9781631900457
DOIs
Publication statusPublished - 8 Dec 2015
Event9th International Conference on Pervasive Computing Technologies for Healthcare, PervasiveHealth 2015 - Istanbul, Turkey
Duration: 20 May 201523 May 2015

Publication series

Name
ISSN (Print)2153-1641

Conference

Conference9th International Conference on Pervasive Computing Technologies for Healthcare, PervasiveHealth 2015
Country/TerritoryTurkey
CityIstanbul
Period20/05/1523/05/15

Structured keywords

  • Digital Health
  • SPHERE

Keywords

  • on-body sensing
  • inductive power
  • wireless power transfer
  • healthcare
  • safety compliance

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