Mobile device for detecting when railway trains are allowed to move confirms actual coordinate position of train via satellite, checks if it is permissible for train to move by comparing coordinate position with desired coordinate position

摘要

The device has a unit fitted in each train based on the Global Positioning System or GPS. Each individual device can confirm the time dependent actual coordinate position of the associated train via satellite and can check whether it is permissible for the train to move by comparing the coordinate position with a desired coordinate position.