Ballistocardiogram signal processing method and system

The invention discloses a ballistocardiogram signal processing method and system, and the method comprises the following steps: S1, carrying out the collection of BCG signals, storing the collected BCG signals into a cache memory, and obtaining a BCG signal I; s2, preprocessing the BCG signal I; s3, through Hilbert transform, obtaining a BCG signal envelope based on J peak characteristics from the BCG signal II; s4, obtaining a J peak coordinate sequence of the BCG signal II through the peak enveloped by the BCG signal; s5, constructing a multi-scale BCG template signal based on the average heart cycle; and S6, acquiring and intercepting a plurality of sample signals from the BCG signal I, performing DTW algorithm operation on each sample signal and the multi-scale BCG template signal to obtain a final J peak coordinate sequence of the BCG, completing the processing of the ballistocardiogram signal, and realizing heartbeat cycle positioning. The problems that BCG signals are prone to being interfered, and hea