Differential bus interference suppression method for rail transit vehicle

The invention discloses a rail transit vehicle differential bus interference suppression method, and particularly relates to the technical field of rail transit, which comprises the following steps of: setting a controllable emi interference source by adopting an adjustable oscillator, and applying the controllable emi interference source in a differential data transmission process according to synchronization, so that two transmission lines of differential data are subjected to synchronous interference; the method comprises the following steps of: selecting a section of interference numerical value from two transmission lines, respectively extracting specific electromagnetic frequencies from data acquired from the two transmission lines by a receiving end aiming at the section of interference numerical value, judging the consistency difference of the extracted values, acquiring a difference value when the consistency difference of the two acquired extracted values is inconsistent, and acquiring a signal thro