Method for monitoring staying persons in vehicle based on millimeter wave radar

The invention relates to the technical field of monitoring equipment, and particularly provides a millimeter wave radar-based in-vehicle staying person monitoring method, which comprises the following steps of S1, generating a thermodynamic diagram through a millimeter wave radar; s2, the distance value corresponding to the nth distance quantization unit in the vehicle is set to be rn, the angle value corresponding to the mth direction angle index is set to be theta m, n = 1, 2, 3, 4,... Nr, and m = 1, 2, 3, 4,... Naz; s3, setting a thermodynamic diagram matrix of Nr * Naz of the millimeter wave radar at the t-th frame as S [t]; s4, defining the position of the ith passenger seat as a target area Zi on the thermodynamic diagram matrix S [t]; and S5, in the ith area and the tth frame, calculating the average power energy of the area, and judging whether people exist in the area or not through the average power energy of the area. According to the millimeter wave radar-based in-vehicle retention person monitori