A balise is an electronic beacon or transponder placed between the rails of a railway as part of an automatic train protection (ATP) system. The French word "balise" is used to distinguish these beacons from other kinds of beacons.
Fixed balise
Fixed balise sends a line data telegram to the vehicle.The telegram contains operating information and provides details on the position of the train on the line (reference point). In the fixed balise, the line data telegram is stored permanently. This data can be changed by the user at any time, if required.
Switchable balise
Switchable balise. All signal codes corresponding to the possible signal aspects and their associated telegrams are stored in Lineside Equipment Unit (LEU) installed at the trackside. In accordance with the signal aspect, the appropriate telegram is passed on to the variable data balise which in turn transmits it to the train. Switchable balises are connected through point to point cables with LEU that provides both data signal (telegrams) and power supply. The switchable balise checks the quality level of the data signals received from the LEU and, in case of failure, transmits a default data telegram which is stored in the balise’s non-volatile memory.
THIS MODEL
In this model are represented two Fixed Balise attached on wooden ties and shows you how balise should be attached on these kind of ties (wooden ties was not intended to attach these things on them, so the balise should be fixed using metal screws, nuts and rods, like it "hug" on the woodet tie)
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