Train detection system based on precise trigger segmentation

The utility model relates to the field of train detection, and discloses a train detection system based on precise trigger segmentation, which comprises a first sensor, an analysis module, a wheel sensor and a trigger interval, the first sensor is used for continuously acquiring appearance information of a moving train, and the analysis module is used for judging whether the appearance of the train is abnormal or not according to the appearance information; the train is provided with a bogie, and wheels are arranged on the bogie. The trigger section comprises a plurality of first sections and a plurality of second sections, and the plurality of first sections and the plurality of second sections are sequentially and alternately connected in series; the wheel sensors are only arranged in the first interval in sequence, and the wheel sensors are used for generating a set of trigger signals with time intervals in turn when wheels of a train pass through the trigger interval. The scheme is used for solving the pr