In-Vehicle Radar Based Heart Rate Monitoring

Abstract

Interior radar has recently emerged as a promising technology in non-contact vital sign (NCVS) sensing. This thesis discusses the underlying principles and techniques of radar-based heart rate detection, focusing on the measurement of subtle movements of the chest wall associated with cardiac activity. By applying carefully designed filters and analyzing the radar signals, we can monitor the heart rate of high sensitivity in the time domain. After the experiment, the radar was placed in a suitable position in the car to collect clear signals, and then processed the signal filters with minimum phase shift, and smoothed the signal using a Gaussian filter, finally obtained promising heartbeat signals within proper thresholds and parameters setting. The obtained radar heart rate signals matched the heart rate of the ones simultaneously acquired from the pulse sensor with an accuracy of up 96%. Our thesis has laid down the groundwork for exploring new measures for health indications in the future.