Why the study?
Can a low-cost phase detection radar measure human heartbeat and respiration signals without physical connections?
Can a low-cost phase detection radar measure human heartbeat and respiration signals without physical connections?
A low-cost phase detection radar can measure human heartbeat and respiration signals contactlessly at a distance of 40 cm.
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Feasible for short-range contactless monitoring; extends radar diagnostics but remains hypothesis-generating for clinical use.
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.
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Kim et al. (2007) studied this question.
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