The aim and task of wheel detection is to provide digital pulses that are either secure or not secure, as required, and which indicate the presence, the speed or the direction of an axle. The interface to the customer application can be provided via electronic switching contacts (optocouplers), relay contacts (zero-voltage) or in software-based form (serial data protocol), as required.
Safe and cost-effective railway operation
During traversing, the wheel flange damps the inductive wheel sensor. The analogue signal aspect is transmitted to the evaluation board as a direct current signal. The relevant evaluation board is responsible for evaluating this signal and making the appropriate digital switching patterns available at the interface, in accordance with the customer application. Standardised output characteristics in accordance with CENELEC are available at various safety levels (SIL1 to SIL4).