Optical fiber vibration event monitoring method and device

The invention discloses an optical fiber vibration event monitoring method and device. The method comprises the following steps: acquiring an initial vibration signal in reverse Rayleigh scattering light generated by an optical fiber; performing noise reduction processing on the initial vibration signal to obtain a first vibration signal, and constructing a time-frequency characteristic matrix of the first vibration signal; processing the time-frequency characteristic matrix by using a pre-trained vibration data analysis model to obtain a first vibration event type corresponding to the reverse Rayleigh scattering light; constructing a graph feature vector matrix corresponding to the first vibration signal; processing the graph feature vector matrix by using a pre-trained vibration graph analysis model to obtain a second vibration event type corresponding to the reverse Rayleigh scattering light; and determining a target vibration event type corresponding to the reverse Rayleigh scattering light according to t