Sound spectrum fault diagnosis method and system for track circuit equipment

The invention provides a track circuit equipment sound spectrum fault diagnosis method and system. The method comprises the following steps: acquiring sound data of a track circuit equipment transmitter and data of a track circuit equipment receiver; mel-frequency cepstrum coefficient analysis or wavelet packet decomposition is carried out on the sound data to carry out feature extraction to generate feature matrixes, and then the feature matrixes are combined to generate a sample set; the sample set is divided into a training set and a test set, the training set is used for training a support vector machine to generate the support vector machine model, and the test set is used for testing the support vector machine model to determine the accuracy rate of the model; and analyzing the sound data of the track circuit equipment through a support vector model, and judging the fault states of a transmitter and a receiver of the track circuit equipment. According to the invention, fault diagnosis is converted into