Contactless Human Respiratory Frequency Monitoring System Based on FMCW Radar

The COVID-19 virus pandemic (Coronavirus Disease 19) has become a hot topic of conversation due to this date. A disease that attacks the human respiratory system becomes a case of the spread of the disease that is increasing daily. The method for detecting the movement of the human chest usually uses a belt-shaped device attached to the chest to see the respiratory rate. However, chest-mounted use requires contact with other people and promotes less privacy and comfort due to such attachments. Radar systems are urgently needed as contactless devices to reduce the risk of spreading disease. The use of this radar is a Frequency Modulated Continuous Wave (FMCW) technique that can perform semi-real-time monitoring. A monitoring system designed to perform small calculations to detect small movements in chest breathing. This FMCW radar system research compares the RPM radar with manual calculations to get an error value of less than 5%. The results of testing the respiratory target dataset with radar detection obtained an average error value of 1.68%. The proposed research is aimed at the health sector on vital signs.