A phased array non-contact vital signs sensor with automatic beam steering

T. Hall, B. T. Nukala, C. Stout, N. Brewer, J. Tsay, J. Lopez, R. E. Banister, T. Nguyen, D. Y.C. Lie

Research output: Chapter in Book/Report/Conference proceedingConference contribution

14 Scopus citations

Abstract

Doppler-based non-contact vital signs (NCVS) sensor systems have the ability to monitor heart and respiration rates of patients without physical contacts. Because the accuracy of a NCVS sensor can deteriorate quickly in a noisy or cluttered environment, and that patients confined on their beds have different physical sizes and microwave signatures and will still move naturally (though not frequently), continuous NCVS monitoring that can work well for all individuals is very difficult. Therefore, we have developed a highly directive phased-array antenna NCVS system that can perform automatic electronic beam steering for continuous NCVS monitoring with considerably improved monitoring accuracy over that obtained from the Doppler radar with a fixed beam. Our NCVS system includes an automatic beam steering algorithm, and has achieved heart rate measurement accuracy of nearly 95% within 5 beat-per-minute (BPM) vs. reference at our engineering lab.

Original languageEnglish
Title of host publication2015 IEEE MTT-S International Microwave Symposium, IMS 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781479982752
DOIs
StatePublished - Jul 24 2015
EventIEEE MTT-S International Microwave Symposium, IMS 2015 - Phoenix, United States
Duration: May 17 2015May 22 2015

Publication series

Name2015 IEEE MTT-S International Microwave Symposium, IMS 2015

Conference

ConferenceIEEE MTT-S International Microwave Symposium, IMS 2015
CountryUnited States
CityPhoenix
Period05/17/1505/22/15

Keywords

  • Doppler Radar
  • active antenna
  • beam-steering
  • e-health
  • homecare
  • noncontact vital signs monitoring
  • phased array
  • telemedicine
  • vital signs monitoring
  • wireless acute care
  • wireless assisted living

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  • Cite this

    Hall, T., Nukala, B. T., Stout, C., Brewer, N., Tsay, J., Lopez, J., Banister, R. E., Nguyen, T., & Lie, D. Y. C. (2015). A phased array non-contact vital signs sensor with automatic beam steering. In 2015 IEEE MTT-S International Microwave Symposium, IMS 2015 [7166973] (2015 IEEE MTT-S International Microwave Symposium, IMS 2015). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/MWSYM.2015.7166973