SIMULATION AND MEASUREMENT OF AXLE COUNTER WITH FPGA

The paper describes development of axle counter PN300 for the railway industry in high speeds railway corridors up to speed of 300 km/h. Project deals with counting of axles of vehicles in rails for determining of occupied or free sections of the rail corridor. Axle counter PN300 is based on digital processing of signals by FPGA devices as data evaluation system and microcontroller for data communication between the axle counter and superior system. As a sensor, it is used approved electromagnetic sensor. This solution must fulfill whole range of aspects focused especially on safety and security on railway. For recording the passage of railway vehicles are currently being developed inductive sensors with subsequent digital signal processing. This document describes the simulation function of such sensors in transit vehicles and also measurement and signal processing in real testing sensors.