Robust phased array non-contact vital signs monitoring in an office cubicle setting

T. Hall, J. Tsay, G. Dominguez, A. Boothby, V. Das, J. Lopez, T. Nguyen, R. E. Banister, D. Y.C. Lie

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

7 Scopus citations

Abstract

Doppler-based non-contact vital signs (NCVS) sensor systems can monitor the heart and respiration rates without touching the patient, but the accuracy of the NCVS sensing can be degraded considerably by background clutters and movements artifacts from the monitored subject or other motions in the measurement environment. We have, therefore, developed a high directivity phased-array antenna NCVS system that can significantly increase the sensing accuracy and the monitoring range in a typical office cubicle setting. Depending on the position of the beam spot illuminated on the chest, our custom-made beam-steerable phased array NCVS system at 2.4GHz has demonstrated the accuracy of the heart rate monitoring to be within 2 bpm (beat-per-minute) for 92.5%-99.2% of the time at 0.75m. As the monitoring range is extended to 1-1.5m with beam directly illuminating on the center of the chest, the heart rate monitoring accuracy remains within 5 bpm above 78% of time. With more improvement, this phased array NCVS system should benefit patients considerably for telemedicine and remote monitoring, as the patient's vital signs can be monitored comfortably and continuously in both home and office settings, eventually capable of detecting potential sleep apnea and other respiratory or cardiovascular symptoms in real-time.

Original languageEnglish
Title of host publicationProceedings of 2014 International Conference on Intelligent Green Building and Smart Grid, IGBSG 2014
PublisherIEEE Computer Society
ISBN (Print)9781467361231
DOIs
StatePublished - 2014
Event1st International Conference on Intelligent Green Building and Smart Grid, IGBSG 2014 - Taipei, Taiwan, Province of China
Duration: Apr 23 2014Apr 25 2014

Publication series

NameProceedings of 2014 International Conference on Intelligent Green Building and Smart Grid, IGBSG 2014

Conference

Conference1st International Conference on Intelligent Green Building and Smart Grid, IGBSG 2014
CountryTaiwan, Province of China
CityTaipei
Period04/23/1404/25/14

Keywords

  • Active antenna
  • Beam-steering
  • Doppler Radar
  • E-health
  • Homecare
  • Noncontact vital signs monitoring
  • Phased array
  • Remote monitoring
  • Telemedicine
  • Vital signs monitoring

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