Simulation Of The ASFA System In An
ERTMS Simulator
Author(s)
I. Gómez-Rey, J. M. Mera & A. Lorenzo
Abstract
Due to the economic, technical and functional advantages that the simulation
tools of different railway signalling systems present and the possibility of driver
training, an ASFA system simulator (Automatic Signalling and Brake Warning
System) has been developed. This simulator includes on-board and on-track
equipment. This system has been integrated in an ERTMS simulator allowing the
generation of mixed scenarios as they happen on the new ERTMS lines that also
use the ASFA safety system.
By integrating the ASFA system into another simulator both simulators are
able to share several elements such as the virtual cab, applications for generating
scenarios… but on the other hand, it has been necessary to develop new elements
that simulate ASFA specifications. These elements have been implemented in
C++ and Component and Variables Register technologies have been used. The
former allows us to divide the problems into less complicated modules that are
assignable to real elements such as balises, signals, buttons… and the latter
allows us to manage an exchange of variables among the different components
that make up the system.
The ASFA components, which it has been necessary to generate since they
are very different from those used in ERTMS, are the following. ASFA balises
are devices that send information from the infrastructure to the train using the
same messages defined in ASFA specifications; the antenna or sensor of the train
has to receive the message from the balises and this message is transmitted to the
processor unless some failure is simulated; the processor of the on-board
equipment oversees the protection logic that the ASFA system develops; and the
relay panel is the man-machine interface that shows the driver information
relative to the state of the signals and the train, and which, in addition, allows the
driver to realize certain actions and acknowledgements of the system.
Keywords: computer simulation, training, ERTMS, ASFA.
Keywords
computer simulation, training, ERTMS, ASFA.
Related Book
Other papers in this volume
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