Method and system for distinguishing passenger train from goods train by between-wheel spacing method

An automatic train type recognition system for distinquishing passenger train from goods train is composed of 4 magnetic sensors, a signal processing circuit and a programmable controller connected in sequence. The 4 magnetic sensors have one pair of magnetic sensor installed to one rail and having a central distance equal to that of two pairs of wheels, one magnetic sensor for shielding locomotive and generating a signal for beginning recognization, and another magnetic sensor for sensing arrival of locomotive, ending the recognition and reading the result. It is based on the reality that the spacing between two groups of wheels of the passenger train is greater than that of goods train.