Locomotive remote monitoring vehicle-mounted terminal device for heavy haul railway line environment and application

The invention discloses a locomotive remote monitoring vehicle-mounted terminal device for a heavy haul railway line environment. The device plays video images outside a sight distance and alarm information in real time when a train travels; the vehicle-mounted terminal obtains locomotive positioning data through a vehicle-mounted train operation monitoring device LKJ and uploads the locomotive positioning data to the ground data processing system in real time; video images and alarm information of the specified distance in the current locomotive advancing direction are matched according to the locomotive positioning data, a data queue is generated and updated, the vehicle-mounted terminal extracts the latest video images matched with the data queue to be played, and meanwhile alarm information prompting is completed. When a train driver does not have technical means and directly master the line environment condition and the alarm information outside the visual range in time, the real-time video and the alarm