A multi-target vital sign monitoring method based on millimeter wave radar

Abstract

A kind of multi-target vital sign monitoring method based on millimeter wave radar, linear frequency modulation electromagnetic wave signal is sent out by millimeter wave radar, and three-dimensional data matrix is constructed according to its reflection signal;By Fourier transform to different dimensions of data matrix and data processing, the distance, speed, angle information of target is obtained and three-dimensional point cloud data set is made;The relevant information of multiple targets is obtained by clustering the generated point cloud data, and a two-dimensional motion state scatter plot is generated based on the information after clustering;The scatter plot is input into the motion state classifier network model for motion state recognition;The signal of the target in the motion interval is extracted, and the respiratory rate and heartbeat rate are monitored.The present application has good privacy protection, low latency, non-contact and other characteristics, and can realize the monitoring of the vital signs of multiple targets.

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