CONVEL
EBICAB is a trade mark registered by Bombardier for the equipment on board a train used as a part of an Automatic Train Control system. EBICAB was originally derived from Ericsson's SLR system in Sweden. Most trains in Sweden and Norway use a similar on-board system, Ansaldo L10000 (more known as ATC-2) from Bombardier's competitor Ansaldo. ATC-2 was also developed in Sweden.
These on-board systems use pairs of balises mounted on the sleepers. The pairs of balises distinguish signals in one direction from the other direction with semicontinuous speed supervision, using a wayside to train punctual transmission using wayside transponders.
EBICAB comes in two versions, EBICAB 700 in Sweden, Norway, Portugal and Bulgaria and EBICAB 900 installed in the Mediterranean Corridor (vmax= 220 km/h). The EBICAB 900 is also used in Finland (Finnish: Junakulunvalvonta) under the name ATP-VR/RHK. In Portugal it is known as Convel (the contraction of Controlo de Velocidade, meaning Speed Control).
The EBICAB 900 system uses wayside transponders (also called balises) with signal encoders or series communications with electronic lookup table, and on-board equipment on the train. The transmission of data occurs between the passive wayside transponders (between 2 and 4 per signal) and the antenna installed under the train, which powers the transponders when it passes over the transponder. The coupling between the transponder and the on-board antenna is inductive.
In comparison with ASFA, a system which transmits only a maximum amount of data per frequency, EBICAB uses electronic lookup table, the amount of data transmitted is much larger.
Adif/Renfe, in Spain, sometimes use the term ATP to refer to EBICAB 900, which is the first system on its network to provide Automatic Train Protection.
...
Wikipedia