Vital Signs Monitoring via Millimeter-Wave Full-Field Micromotion Sensing

Vital signs monitoring plays an essential role in physical health management. To this end, the contact techniques of electrocardiograms and smart bracelets have been widely studied, but there remain limitations, such as comfort, skin disease patients, and long-term monitoring. In this paper, a novel vital signs monitoring method based on millimeter-wave full-field micromotion sensing (MFMS) is presented to tackle the problems in the synchronous measurement of respiration and heartbeat of existing radar-based approaches. The overview and the principle of the proposed method are firstly depicted. The detailed procedures are then illustrated, including human body positioning, chest displacement extraction, vital signs monitoring, and heart rate variability (HRV) assessment. Finally, experimental results are presented to validate the performance of the proposed method, showing great potential in healthcare and smart home.