Multi-life monitoring system based on FMCW (frequency modulated continuous wave) wideband radar

Abstract

The invention discloses a multi-life monitoring system based on FMCW (frequency modulated continuous wave) wideband radar. The multi-life monitoring system comprises a transmitting unit, a receiving unit, a signal processing unit and a wireless signal transmitting unit; an FMCW signal is transmitted from the FMCW wideband radar to no less than one human object by virtue of the transmitting unit; a reflected echo signal is received by virtue of the receiving unit; the echo signal, which carries vital sign signals, is processed by virtue of the signal processing unit; the vital sign signals are demodulated and separated from the echo signal; and the vital sign signals are transmitted to a computer terminal by virtue of the wireless signal transmitting unit, so that respiration and heartbeat signals of detected persons are monitored under the condition of avoiding contact with the bodies of the detected persons. With the implementation of the multi-life monitoring system disclosed by the invention, under the circumstance of avoiding the contact of any electrodes and sensors with patients, the respiration and heart rates of the plurality of patients can be simultaneously monitored by a long time at a relatively long distance, so that the detected persons can feel more easily and comfortably; the multi-life monitoring system can be widely applied to clinical dynamic monitoring and sleep quality monitoring of patients with severe burn and the like; and meanwhile, the multi-life monitoring system can be also applied to researches in the field of psychology.

Description

technical field [0001] The invention relates to the technical field of radar life detection, in particular to a multi-life monitoring system based on FMCW broadband radar. Background technique [0002] Respiration and heart rate are important physiological parameters of the human body, which directly reflect the physiological state of the human body's breathing and circulatory system, and are an important basis for clinical diagnosis and disease prevention. Therefore, real-time monitoring of human respiration and heart rate has very important clinical value. Traditional clinical methods for monitoring respiration and heart rate mainly use contact sensors such as mechanical sensors and electrodes to directly contact human skin to obtain physiological signals of the human body, which may bring discomfort to the subject. Or the placement position will also affect the accuracy of the instrument to a certain extent. [0003] In terms of non-contact vital sign detection, Frequenc...

AI Technical Summary

Problems solved by technology

So far, radar life detection technology has not fully solved the problem of physiological signal identification and monitoring of multiple stationary human targets

Images