| Operation and Control System [message #50] |
Thu, 27 November 2003 17:49  |
nfries
Messages: 6
Registered: November 2003
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Junior Member |
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Hello,
concerning the discussion about the modelling of the Operation and Control
Systems, I think it necessary to discuss some general aspects.
To be honest, I am not really pleased about the solution with a seperate
element for each technical component of the OCS because it will end in an
unmanageable collection of different elements having all in common the
function to describe a possibility of transferring information between
infrastructure and rolling stock.
This collection will have to be updated continously due to the needs of
different user groups and might cover in the end different technical
solutions for the same function (e.g. different types of balises)
depending on the technical realisations implemented in certain national
railway networks.
The RailML schemes have the purpose to be valid independant of national or
company specific solutions. For that reason I thought about modelling the
OCS in a more functional way i.e. replace the lineside components by the
information to be transferred. Here we arrive at the problem concerning
the future applications using RailML. Simulation programs normally do not
ask for technical components but are interested in the transferrable
information. On the other hand applications for infrastructure planning
demand the opposite.
I am not really sure wether it is possible to satisfy these different
needs without having two alternative elements (i.e. redundancy)to be
chosen by the user. Maybe we can find a solution right in the middle
between the technical and the informational way of representing the OCS.
So far for now - with best regards,
Nikolaus
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