Abstract
In response to the current demand for the remote monitoring of older people living alone, a non-contact human vital signs monitoring system based on millimeter wave radar has gradually become the object of research. This paper mainly carried out research regarding the detection method to obtain human breathing and heartbeat signals using a frequency modulated continuous wave system. We completed a portable millimeter-wave radar module for wireless communication. The radar module was a small size and had a WIFI communication interface, so we only needed to provide a power cord for the radar module. The breathing and heartbeat signals were detected and separated by FIR digital filter and the wavelet transform method. By building a cloud computing framework, we realized remote and senseless monitoring of the vital signs for older people living alone. Experiments were also carried out to compare the performance difference between the system and the common contact detection system. The experimental results showed that the life parameter detection system based on the millimeter wave sensor has strong real-time performance and accuracy.
Highlights
Most existing measuring instruments require physical contact; they need to be attached to the patient for measurement and monitoring
Non-contact monitoring could help minimize the spread of the virus, and the use of non-contact monitoring methods could ensure the safety of health care personnel
This paper mainly studies the detection and separation methods of human breathing and heartbeat signals under the FM continuous-wave system [19]
Summary
Most existing measuring instruments require physical contact; they need to be attached to the patient for measurement and monitoring. These measuring instruments are not convenient for patients who require continuous monitoring for a long time. In light of the current COVID-19 pandemic, non-contact vital signs monitoring equipment could become more important. Remote, non-contact health monitoring instruments are urgently needed [1]. In view of the situation where there is no one to take care of the elderly living alone at home, monitoring the elderly and their daily routines will become important [2]. The elderly population needs care, and their living conditions require real-time monitoring using professional equipment
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