Key result
A continuous-wave Doppler radar monitoring system successfully extracted respiration and heart rates and separated mixed respiration signals, with results comparable to a reference ECG monitor.
Why the study?
Does continuous-wave Doppler radar accurately detect respiration and heart rates in stationary human subjects compared to an ECG monitor?
Does continuous-wave Doppler radar accurately detect respiration and heart rates in stationary human subjects compared to an ECG monitor?
Continuous-wave Doppler radar can successfully extract respiration and heart rates without contact, offering potential for non-invasive healthcare monitoring.
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Demonstrates technical feasibility of contactless radar vital-sign monitoring; leaves open clinical validation before practice adoption.
The aim of this work is to show non-contact physiological signal monitoring system based on continuous-wave (CW) Doppler radar, which is becoming highly attractive in the field of health care monitoring of elderly people. Two radar signal processing methods were introduced in this paper: one to extract respiration and heart rates of a single person and the other to separate mixed respiration signals. To verify the validity of the methods, physiological signal is obtained from stationary human subjects using a CW Doppler radar unit. The sensor operating at 24 GHz is located 0.5 meter away from the subject. The simulation results show that the respiration and heart rates are clearly extracted, and the mixed respiration signals are successfully separated. Finally, reference respiration and heart rate signals are measured by an ECG monitor and compared with the results tracked by the CW Doppler radar monitoring system.
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Qiao et al. (2014) studied this question. Continuous-wave (CW) Doppler radar monitoring system vs. ECG monitor was evaluated on Extraction of respiration and heart rates and separation of mixed respiration signals. A continuous-wave Doppler radar monitoring system successfully extracted respiration and heart rates and separated mixed respiration signals, with results comparable to a reference ECG monitor.
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