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Accurate heartbeat monitoring using ultra-wideband radar

2015; Institute of Electronics, Information and Communication Engineers; Volume: 12; Issue: 3 Linguagem: Inglês

10.1587/elex.12.20141197

1349-9467

Takuya Sakamoto, Ryohei Imasaka, Hirofumi Taki, Toru Sato, Mototaka Yoshioka, K. Inoue, Takeshi Fukuda, Hiroyuki Sakai,

ECG Monitoring and Analysis

We demonstrate an accurate remote measurement of heartbeats using an ultra-wideband radar system. Although most conventional systems use either continuous waves or impulse-radio systems for remote vital monitoring, continuous waves suffer from non-stationary clutters, while impulse-radio systems cannot detect heartbeats. Our ultra-wideband radar system has a moderate fractional bandwidth intermediate of these systems, resulting in both the suppression of clutters and high sensitivity in measuring accurate heart rates even in a dynamic environment. A simultaneous measurement of the vital signal of a participant employing the ultra-wideband radar and electrocardiography reveals the high accuracy of the radar system in measuring the heart rate varying over time.