Railway vehicle anti-collision system and method based on absolute displacement

The invention relates to a railway vehicle anti-collision system and method based on absolute displacement. The railway vehicle anti-collision system and method solve the problems that in the prior art, anti-collision control is not accurate enough and potential collision hazards exist. The system comprises at least two railway vehicles running on the same rail. A speed and displacement information collection unit, a network connection unit, a position state detection unit, a change trend relation judgment unit, a front-back position relation judgment unit, a running state analysis unit and an anti-collision strategy output unit are arranged on each railway vehicle. The movement relation between the two railway vehicles is judged by detecting the front-back position relation between the railway vehicles and the railway vehicle absolute displacement value change trend relation, the current limited speed is calculated, and the current limited speed is compared with the current speed, so that whether anti-collision control is output or not can be judged. The railway vehicle anti-collision system and method have the beneficial effects that the running states of the railway vehicles are analyzed and judged through the absolute displacement value, the distance and movement relation between the railway vehicles is accurately analyzed, accurate data are provided for anti-collision calculation, and the anti-collision control accuracy is improved.