1. Measurement of human heartbeat and respiration signals using phase detection radar
- Author
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Yun Seok Hong, Hyoung Jong Kim, Ki Ho Kim, and Jin Joo Choi
- Subjects
Phase difference ,Radar ,Heartbeat ,Computer science ,Acoustics ,Reproducibility of Results ,Equipment Design ,Sensitivity and Specificity ,Signal ,Phase detector ,Respiratory Function Tests ,law.invention ,Equipment Failure Analysis ,Heart Rate ,law ,Heart Function Tests ,Respiration ,Respiratory Mechanics ,cardiovascular system ,Humans ,Diagnosis, Computer-Assisted ,Instrumentation ,Digital filter ,circulatory and respiratory physiology - Abstract
This article introduces a low-cost phase detection radar aimed at measuring the human heartbeat and respiration signals without any physical connections to the human body. A continuous-wave radar targeting the chest will detect the phase difference, resulted by the time-varying target position of the heartbeat, between the transmitted signal and the reflected signal. We have tested the developed radar to measure the heartbeat and respiration signals at a distance of about 40 cm from the chest.
- Published
- 2007
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