Robust Phased Array Non-Contact Vital Signs Monitoring in an Office Cubicle Setting

被引:0
|
作者
Hall, T. [1 ]
Tsay, J. [1 ]
Dominguez, G. [1 ]
Boothby, A. [1 ]
Das, V. [1 ]
Lopez, J. [1 ]
Nguyen, T. [2 ]
Banister, R. E. [2 ]
Lie, D. Y. C. [2 ]
机构
[1] Texas Tech Univ, Dept Elect & Comp Engn, Lubbock, TX 79409 USA
[2] Texas Tech Univ, Hlth Sci Ctr, Lubbock, TX 79409 USA
来源
2014 INTERNATIONAL CONFERENCE ON INTELLIGENT GREEN BUILDING AND SMART GRID (IGBSG) | 2014年
关键词
active antenna; beam-steering; Doppler Radar; e-health; homecare; noncontact vital signs monitoring; phased array; telemedicine; vital signs monitoring; remote monitoring;
D O I
暂无
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
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.
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页数:4
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