ETCS & SCMT Eurobalise

The Eurobalise is a passive transponder that is powered by the train. It transmits either locally stored telegrams or telegrams provided by the line-side electronic unit (LEU) dependent on the railway sisgnal aspect. Those telegrams inform the train about signals, speed limits and track conditions.

When the train rosses a Eurobalise, the Eurobalise is tele-powered by BTM and transmit a telegram which is received by the BTM. Afeter reception the telegram is processed and passes to the train control computer, called the European Vital Computer (EVC). The EVC provides cab signaling to the driver, Furthermore, it continuously monitors the train speed and, if necessary, applies the service brake and/or the emergency brake to guarantee the safety of the train,

MERMEC Group diagnostic system is able to check the operating conditions of the Eurobalise, detecting any possible anomalies in the ground plants (i.e. degraded balise). Moreiover, the diagnostic system tele-powers the Eurobalise processing the telegram received. It acquires and digitizes the major lobe of the balise radiation pattern as well as registers the "length of contact" intervening between the balise interception and the bit stream receipt (telegram acquisition).

The diagnostic system "Acquisition and Processing Unit (AU\PU)" is able to measure\evaluate:

• distance between balises
• functioning status of balises
• functioning status of encoder/cables connected to balises
• type of detected balises.

The AU\PU unit contains a database storing the following information:

• all information points (IP)
• for each IP: type, balises number and typology, related plant
• all telegrams associated with each balise.

High Speed

Main & Regional

Mass Transit & Light

Heavy-Haul