The application discloses a method for extracting effective information of time parameters of
railway signal relays, which comprises the following steps: arranging all
time parameter sequences obtained through
electric parameter experiments, and performing data preprocessing on the parameter sequences; decomposing the
time parameter sequences obtained after data preprocessing into components capable of representing different information; performing autocorrelation function solving on all the components to obtain autocorrelation function images of the components, and determining
signal-to-
noise demarcation points according to the autocorrelation function images; performing
wavelet threshold denoising
processing on the components containing
noise, and then reconstructing the processed IMF components, the IMF components not denoised and residual components to obtain parameter sequences after denoising, and extracting effective information of the parameters from the parameter sequences after denoising. The application can adaptively perform denoising on the
time parameter sequences, and the improved
wavelet threshold denoising method is used for denoising
processing, so that the superiority of the method for denoising the time parameters of railway relays to extract effective information of the parameters is embodied.