Home » railML newsgroups » railML.infrastructure » ]railMLv3]: switch referece point (switch referece point)
]railMLv3]: switch referece point [message #2115] Fri, 25 January 2019 17:43 Go to next message
Fabrizio Cosso is currently offline  Fabrizio Cosso
Messages: 12
Registered: September 2017
Junior Member
Dear all,
I would like to discuss with the community about the switch refence point when indicating its position in some positioning system.
What's the preferred reference point?
- the head/begin of switch position as reference point
- center as reference point
Are both information (begin and center) needed and used by systems?


Thanks

BR

Fabrizio
Re: ]railMLv3]: switch referece point [message #2120 is a reply to message #2115] Sat, 26 January 2019 08:34 Go to previous messageGo to next message
Jörg von Lingen is currently offline  Jörg von Lingen
Messages: 87
Registered: March 2016
Member
Attached you find the typical transformation from hardware to schematic plan in Germany.
WA - beginning of switch
WM - centre, crossing point of tangents
WE - end of switch
Ro - radius of branching track

Regards,
Jörg von Lingen - Interlocking Coordinator
Fabrizio Cosso wrote on 25.01.2019 17:43:
> Dear all,
> I would like to discuss with the community about the switch
> refence point when indicating its position in some
> positioning system.
> What's the preferred reference point?
> - the head/begin of switch position as reference point
> - center as reference point
> Are both information (begin and center) needed and used by
> systems?
>
>
> Thanks
>
> BR
>
> Fabrizio
>
Re: ]railMLv3]: switch referece point [message #2168 is a reply to message #2120] Mon, 08 April 2019 20:16 Go to previous message
christian.rahmig is currently offline  christian.rahmig
Messages: 439
Registered: January 2016
Senior Member
Dear all,

following our 35th railML Conference in Linz last week, I want to pick
up the topic of the switch reference point again and summarize the
current state of the discussion:

1) Depending on the use case different points of the switch are of interest.

2) For SCTP (schematic track plan) the WM (switch center, crossing point
of tangents) seem to be the interesting one.

3) Use cases that have higher requirements on the lengths of the tracks
the WA (switch begin) seems to be the best choice.

4) The WA (switch begin) is not clearly defined: some people locate it
at the (virtual) begin of the radius of the branching track while others
locate it at the begin of the switch tongues.

5) It would be good if a switch can be located via a <spotLocation> with
any of the forementioned points and requirements.

And now my questions to you, dear community:
a) Do you consider point 5) as essential for railML 3.x?
b) Which point will you choose if you locate the switch via a
<spotLocation>?

Thank you very much and best regards
Christian

--
Christian Rahmig - Infrastructure scheme coordinator
railML.org (Registry of Associations: VR 5750)
Phone Coordinator: +49 173 2714509; railML.org: +49 351 47582911
Altplauen 19h; 01187 Dresden; Germany www.railml.org


Christian Rahmig – Infrastructure scheme coordinator
railML.org (Registry of Associations: VR 5750)
Altplauen 19h; 01187 Dresden; Germany www.railML.org
Previous Topic: <railMLv3> Infra Geometry Terminology
Next Topic: railML2: trackRef@sequence
Goto Forum:
  


Current Time: Thu Jun 13 13:32:41 CEST 2024