Scanning of the wheel head at high speed
For a fast classification of the wheel head's wear-and-tear condition in view of an assessment of the necessary re-working, measuring vehicles were equipped with laser sensors, in such a way that there were 5-7 sensors positioned on each side of the rail around the wheel head.
At these points measuring values are recorded every 20cm and compared to the control profile stored in the computer.
The computer classifies the deviations according to the allowed tolerance values. The vehicle's movements overlaying the measuring values are compensated for mathematically by the computer.