Rail transit early warning system based on big data

The invention discloses a rail transit early warning system based on big data, which belongs to the technical field of rail transit and comprises a server, a derailment early warning module, a safety early warning module, a fault early warning module, a passenger flow early warning module, an alarm module and a data storage module. The derailment early warning module is used for preventing derailment of the railway vehicle, and the specific method for preventing derailment of the railway vehicle comprises the steps that a rail model is established, position information of the railway vehicle is obtained in real time, the obtained real-time position information of the railway vehicle is input into the rail model, and the position of a passenger in a safety line is controlled to be irradiated by lamplight. When the railway vehicle enters the station, the passenger can exit the safety line, the situation that the passenger does not hear or says not his or her voice is avoided, and the safety of the railway vehic