Key result
RF-Heartbeat, a robust heartbeat monitoring system based on FMCW radar, enables accurate inter-beat interval estimation across different user positions and postures.
Why the study?
Template matching for radar-based heartbeat monitoring requires high heartbeat shape similarity and suffers from shape variation of radar-obtained heartbeat signals.
The proposed RF-Heartbeat system offers a robust, contactless method for accurate heartbeat monitoring and inter-beat interval estimation using FMCW radar.
Enables position-independent contactless heartbeat monitoring; leaves open clinical validation before any practice adoption.
We propose RF-Heartbeat, a robust heartbeat monitoring system based on FMCW radar, enabling accurate inter-beat interval (IBI) estimation. Dynamic programming is implemented to improve the robustness of the template matching algorithm. Template matching requires a high similarity of heartbeat shape and suffers from shape variation of heartbeat signal obtained by radar. With heartbeat signal, generated template, and heart rate variability (HRV) prior knowledge, global optimal heart segmentation can be achieved to solve this problem. In addition, an optimal range bin selection algorithm is proposed. Therefore, when the user is in different positions and postures, RF-Heartbeat can always obtain high-quality heartbeat signals.
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Hao Zhang (2021) studied this question. RF-Heartbeat (FMCW radar-based heartbeat monitoring system) was evaluated on Inter-beat interval (IBI) estimation. RF-Heartbeat, a robust heartbeat monitoring system based on FMCW radar, enables accurate inter-beat interval estimation across different user positions and postures.
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