The invention provides an iron
tower voiceprint intelligent detection method and
system, and belongs to the voiceprint detection technology. The method comprises the following steps: firstly, outputting a sweep frequency
signal in a specific frequency range, collecting iron
tower vibration response data, extracting candidate frequency through
spectral analysis, and dynamically adjusting excitation frequency by using a
gradient descent algorithm; hardware filtering is carried out on collected sound signals,
frequency band signals related to excitation frequency are reserved, and space beam forming is carried out through a
microphone array to enhance iron
tower voiceprint signals. Separating iron tower vibration components from the mixed signals by utilizing
independent component analysis, performing time-
frequency analysis, extracting an energy ratio of a specified
frequency band by adopting
wavelet packet transformation, and performing
deep learning processing in combination with a one-dimensional
convolutional neural network to generate an energy ratio and zero-crossing rate
feature vector; and finally, inputting the feature vectors into a support vector
data description model, setting an initial threshold value and dynamically adjusting the initial threshold value, thereby realizing graded judgment of bolt looseness and improving detection efficiency and stability.