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Contactless Heart Sound Detection Using Advanced Signal Processing Exploiting Radar Signals
IEEE Journal of Biomedical and Health Informatics
|November 5, 2024
Summary
This study introduces a novel continuous-wave (CW) radar framework for contactless vital signs detection. The system achieves highly accurate heart pulse readings and identifies limitations in conventional radar methods for enhanced patient monitoring.
Area of Science:
- Biomedical Engineering
- Signal Processing
Background:
- Contactless vital signs detection offers advanced healthcare monitoring.
- Continuous, real-time assessment enables early anomaly detection and intervention.
Purpose of the Study:
- To present a novel framework for contactless vital sign detection using CW radar.
- To improve the accuracy and reliability of non-invasive vital sign monitoring.
Main Methods:
- Utilized continuous-wave (CW) radar technology.
- Employed advanced signal processing techniques for data analysis.
- Captured 1,261 samples for radar-based heart sound waveforms, compared against ECG ground truth.
Main Results:
- Achieved unprecedented precision in radar-based heart sound waveform capture.
- Demonstrated highly accurate human heart pulse readings with a MAPE of 0.0129 and MAE of 0.8712.
- Identified limitations in conventional radar methods and showed superior accuracy across all heart rate states.
Conclusions:
- The novel CW radar framework sets new standards for non-invasive vital sign monitoring.
- The approach offers minimal errors and superior accuracy compared to existing methods.
- Enables precise and convenient patient monitoring for early detection of health anomalies.
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