| Re: [railML3.1] Modelling of a double slip switch [message #2451 is a reply to message #2413] |
Mon, 01 June 2020 15:37  |
Jörg von Lingen
Messages: 87
Registered: March 2016
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Member |
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Dear all,
in-between I had a discussion about this topic with some users and want to add
the outcome here for your info.
The attached pictures show the 3 steps of evolution from simple switches to a
double slip crossing if you go into interlocking domain.
step01: For a simple switch one needs to do a geometrical check in order to find
out what's right and left of the deviating branches,
step02: This is more an intermediate state for illustration. The two switches
are a bit superimposed (not yet a real double slip but to show the evolution).
Here the determination right/left shall be the same as in step01.
step03:The third step is the final superimposition but if you think of two
simple switches making the picture then the decision for right/left shall be
under the same rule.
The picture "switches01" shows the net plan for an example of double slip switch
(SLIP SWITCH Dsw02):
1) select from straightBranch one with starting netElement
nr_ne5ne12_dsw7 -> ne5
2) connection straight -> ne12
3) connection turning -> ne6
4) geometrical check: ne6 is right of ne12
rightBranch=ne6, leftBranch=ne12
5) select the other end of the straightBranch -> ne12
6) connection straight -> ne5
leftBranch=ne5 (due to symmetry)
7) connection turning -> ne2
rightBranch=ne2
similar procedure for SLIP SWITCH Dsw04:
1) nr_ne9ne11_dsw10 -> ne9
2) straight -> ne11
3) turning -> ne6
4) geometrical check: leftBranch=ne6, rightBranch=ne11
5) ne11
6) straight -> ne9, rightBranch=ne11
7) turning -> ne10, leftBranch=ne10
Best regards,
Joerg v. Lingen - Interlocking Coordinator
Am 03.04.2020 um 06:05 schrieb Joerg von Lingen:
> Dear all,
>
> there seems to be a general issue when transforming a track plan into railML:
>
> 1) For an 'ordinarySwitch' we have in IS the elements 'leftBranch' and 'rightBranch'. Just from the netRelations it
> seems not really possible to decide which is one of the both branches. How would you solve the issue?
>
> 2) For a 'doubleSwitchCrossing' we have in IS the elements 'straightBranch' and 'turningBranch' but in IL we need to
> split into two normal switches which again have 'leftBranch' and 'rightBranch'. Could this be solved just from the
> topology information? How would you do this trick?
>
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Attachment: step01.jpg
(Size: 15.17KB, Downloaded 306 times)
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Attachment: step02.jpg
(Size: 12.91KB, Downloaded 303 times)
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Attachment: step03.jpg
(Size: 12.77KB, Downloaded 305 times)
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Attachment: switches01.png
(Size: 51.32KB, Downloaded 309 times)
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