Research Article
A Noncontact Vital Signs (NCVS) System for Potential Patient Monitoring Enabled by Robust Software Defined Radio (SDR)
More Detail
International Journal of Clinical Medicine and Bioengineering, 1(1), December 2021, 3-11, https://doi.org/10.35745/ijcmb2021v01.01.0002
Published: 30 September 2021
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ABSTRACT
This research proposes a robust non-contact vital signs (NCVS) sensor system for continuously monitoring the human respiration rate (RR) and heart rate (HR) in a distance of around1.3 m. The novel Doppler-based NCVS sensor system is realized using an SDR (software defined radio) unit with optimized transmit/receive gain in commercial broadband, which filters intermediate frequency (IF) and operates at 2.4 GHz ISM band using a pair of small PCB antennas. When compared with the vital signs data measured by traditional contact-based sensors, the NCVS sensing system demonstrates excellent accuracy in real-time RR/HR monitoring within 0.5/3 BPM (breath/beat per minute). We have obtained an IRB (Internal Review Board) approval to start a small clinical trial at Texas Tech University Health Sciences Center (TTUHSC) soon, hoping to use this system to effectively monitor vital signs of COVID-19 patients and to help telehealth delivery in the post-COVID-19 era.
CITATION (APA)
Liu, Y., Sweeney, C., Mayeda, J., Hawkins, J., Rojas, S., Lie, P. E., Nguyen, T. Q., & Lie, D. Y. C. (2021). A Noncontact Vital Signs (NCVS) System for Potential Patient Monitoring Enabled by Robust Software Defined Radio (SDR). International Journal of Clinical Medicine and Bioengineering, 1(1), 3-11. https://doi.org/10.35745/ijcmb2021v01.01.0002