Prediction of shunt malfunction of track circuit based on PSO-SVM

Shunt malfunction of track circuit is the important factor that affects the efficiency and safety of railway transportation. In this paper, the influences to induced current which caused by shunt malfunction has been analyzed based on track circuit theoretical model and the wavelet decomposition and reconstruction algorithm was used to compare and analyze the detail component of the current both in the normal condition and shunt malfunction condition. The prediction accuracy rate can be as high as 99.5% with the prediction model.