| 摘要 |
In order to reconstruct a non-rectilinear movement path (2) of a vehicle (1), it is proposed to use an inductive measuring device (15) to measure the orthogonal components of an external, stationary magnetic field (14), which lie in the plane of movement of the vehicle, and both to count the pair (f1; f2) of measured values thus obtained as an event frequency in a matrix memory (22) and to record it in terms of modulus in a ring memory (23). Triggered by an external trigger pulse (29), the measured values of a specific time window (5) are stored non-erasably in the two memories (22, 23), and are available for evaluation by means of an external device (24) with the aid of further movement data (25) for the purpose of reconstructing the path by computer. <IMAGE> |
