A DEVICE AND A METHOD FOR DETERMINING THE POSITION OF A RAIL-BOUND VEHICLE

摘要

A device for determining the position of a rail-bound vehicle (1), comprising at least one sensor (2, 2b) adapted to generate a signal dependent upon irregularities in the track caused by rail components arranged on or in connection to the rail track, a memory means (5) adapted to store information about the position of the rail components along the route of travel of the vehicle and necessary features for identifying the rail components, an identifying means (6) adapted to detect and identify the rail components by comparing said signal with the stored features, a calculating means (7) adapted to determine the position of the vehicle based upon the identified rail components and their stored position. A method to determine the position of a rail-bound vehicle whereby position and characteristic features of rail components arranged on or in connection to the rail track are registered and stored in advance. During a signal dependent upon irregularities caused by said rail components is generated. The signal is compared to the stored characteristic features, whereby the rail components are detected and identified, and the position of the vehicle is determined based upon the identified rail components and their stored position.