Heart Rate Sensing with a Robot Mounted mmWave Radar

Published:

Authors: Peijun Zhao, Chris Xiaoxuan Lu*‚ Bing Wang, Changhao Chen, Linhai Xie, Mengyu Wang, Niki Trigoni and Andrew Markham. In ICRA 2020.

[paper] [video] [code]

Abstract

Heart rate monitoring at home is a useful metric for assessing health e.g. of the elderly or patients in post-operative recovery. Although non-contact heart rate monitoring has been widely explored, typically using a static, wall-mounted device, measurements are limited to a single room and sensitive to user orientation and position. In this work, we propose mBeats, a robot mounted millimeter wave (mmWave) radar system that provide periodic heart rate measurements under different user poses, without interfering in a user’s daily activities. mBeats contains a mmWave servoing module that adaptively adjusts the sensor angle to the best reflection profile. Furthermore, mBeats features a deep neural network predictor, which can estimate heart rate from the lower leg and additionally provides estimation uncertainty. Through extensive experiments, we demonstrate accurate and robust operation of mBeats in a range of scenarios. We believe by integrating mobility and adaptability, mBeats can empower many downstream healthcare applications at home, such as palliative care, post-operative rehabilitation and telemedicine.