Non-contact human machine interface based on bio-interaction with wireless power transfer features

Zhiming Xiao, Dieter Genschow, Chenhui Liu, Yan Li, Changzhi Li

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

This paper presents a non-contact human machine interface to sense the position or bio-activity of human body. Based on the electrical response of power transferring coil to the physical shapes, impedance, and dielectric constant of human body, the proposed architecture can be easily integrated and allows the smart devices to read information including physical position or cardiorespiratory activity of human body. A commercial WPT/NFC coils incorporated in an LC resonate tank senses the human activities and changes the oscillating frequency accordingly. High sensitivity is achieved by utilizing a mixer that down converts the resonant frequency to baseband from a carrier frequency of several MHz. Experiment was carried out by correlating the frequency shifts to the hand-coil distance. As an example, the result shows good indication of hand position when the distance is below 10mm. By proper arrangement of multiple coils, the information of hand position can be easily extracted through further processing by smart devices.

Original languageEnglish
Title of host publication2015 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications, IMWS-BIO 2015 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages167-168
Number of pages2
ISBN (Electronic)9781479985432
DOIs
StatePublished - Oct 21 2015
EventIEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications, IMWS-BIO 2015 - Taipei, Taiwan, Province of China
Duration: Sep 21 2015Sep 23 2015

Publication series

Name2015 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications, IMWS-BIO 2015 - Proceedings

Conference

ConferenceIEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications, IMWS-BIO 2015
Country/TerritoryTaiwan, Province of China
CityTaipei
Period09/21/1509/23/15

Keywords

  • Wireless power transfer
  • bio-interaction
  • human machine interface

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