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Monitoring heart activity using continuous wave radar and short-time chirp Z-transform

Title
Monitoring heart activity using continuous wave radar and short-time chirp Z-transform
Authors
Cho, Hui-SupPark, Young-Jin
DGIST Authors
Cho, Hui-Sup; Park, Young-Jin
Issue Date
2019-12-16
Citation
The 11th International Conference on Internet, 103-106
Type
Conference
ISSN
2093-0542
Abstract
Recently, as smart watches and wristbands have gained popularity, it has become easier to monitor individual physical activities. In particular, as applications have emerged to measure heart rate or an electrocardiogram (ECG) to alert users when cardiovascular disease symptoms occur, their usefulness is gradually being recognized. In general, measuring heart rate or ECG requires a process of acquiring optical or electrical signals through close skin contact. However, if heart activity can be monitored in a non-contact manner, then the discomfort caused by sweating when using the conventional technique can be eliminated. In this study, we propose a method that can measure the heart rate in a non-contact manner using electromagnetic waves. Specifically, heart rate measurement with high accuracy by using a continuous-wave (CW) radar with a small form factor, low power consumption, and low cost is proposed. The one-dimensional CW radar signal is processed into two-dimensional data on the time-frequency plane through short-time chirp Z-transform, and the heart rate is estimated by determining the phase change shape of the radar signal caused by heartbeats. In short, the proposed method can extract the human heart rate in a non-contact manner.
URI
http://hdl.handle.net/20.500.11750/14093
Publisher
Korean Society for Internet Information
Files:
There are no files associated with this item.
Collection:
Division of Electronics & Information System2. Conference Papers


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