The invention provides an intrusion alarm method and
system based on vibration
optical fiber detection and complete action extraction, and the method comprises the steps: S1, solving and storing a
signal, and setting a threshold value to judge an intrusion action
signal and give an alarm; s2, obtaining an original vibration
signal curve and carrying out normalized leveling
processing on the original vibration signal curve; s3, performing high-frequency high-pass filtering
processing on the leveled signal, performing binarization
processing on the image, and performing external contour extraction to obtain a minimum enclosing rectangle; s4, low-frequency high-pass filtering processing is carried out on the signals after leveling processing, a time-frequency image
data set of a classification network is constructed, and an EfficientNet classification
network model is trained; and S5, according to the information of the minimum enclosing rectangle, in combination with a matrix obtained through an OfficientNet classification network, realizing classified alarm. According to the method, the energy
waterfall plot with a relatively good effect can be quickly obtained, so that the position point of the suspicious intrusion signal can be quickly obtained in the spatial dimension, and the coverage time of the suspicious intrusion signal can be accurately obtained in the time dimension.