Home » railML newsgroups » railML.infrastructure » SpeedChange : Protection system reference
Re: SpeedChange : Protection system reference [message #404 is a reply to message #402] Wed, 24 October 2012 17:32 Go to previous messageGo to previous message
Carsten Weber is currently offline  Carsten Weber
Messages: 27
Registered: November 2011
Junior Member
"Susanne Wunsch" <coord(at)commonrailmlorg> schrieb im Newsbeitrag
news:m14nlklz6nfsf(at)cygnusheepsaxde...
> Dear Christian, Dirk, Pierre and others,
>
> Christian Rahmig <coord(at)infrastructurerailmlorg> writes:
>> I added the request for an (optional) reference from a <signal> to a
>> <trainProtectionElement> as a comment to trac ticket [1].
>>
>> [1] https://trac.assembla.com/railML/ticket/173
>
> That's only one part of the idea.
>
> There are also speed changes that are ensured by train protection
> elements, such as PZB-magnets. [1]
>
Ok.

> Sure, not all speed changes have such restrictions, it should be an
> optional addition to the current <speedChange> element.

Ok.
>
> Moreover there should be more than one such a reference to different
> <trainProtectionElement>s. The Germans use up to three magnets for one
> speed aspect. [1]
>
> [1] https://de.wikipedia.org/wiki/Geschwindigkeitspr%C3%BCfabsch nitt

I think you are looking for the wrong case. "Geschwindigkeitsprüfabschnitte"
(GPA) can also be caused by sepcial situations inside of a station (e.g.
missing overlap). It is also possible to have several GPA for one speed
aspect if you need to check speed several times (e.g. S-Bahn-Tunnel in
Stuttgart from University station to "Schwabstraße"). This might be cases
you need more than one link between a speedChange and a train protection
element. So in case of an GPA which "Magnet" should be linked? Or if you do
it with balises or some thing else which might exist as a balise group and
only a single balise? In such a case you need another structure for train
protection elements. Otherwise the reading program has to guess whether the
three magnets you linked are single magnets or a GPA. There should be a
grouping element (= balise group, GPA, ...) which is linked from a speed
aspect and some train protection elements which are linked to the grouping
element.

For me it is not usefull to have such a link between speed changes and train
protection elements. There should be a tool which checks the speed steps and
searches for a required train protection grouping element and checks the
distances and all the other things around.

Best regards.

Carsten

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