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Erschienen in:
2010 | OriginalPaper | Buchkapitel
Modelling Railway Interlocking Tables Using Coloured Petri Nets
verfasst von : Somsak Vanit-Anunchai
Erschienen in: Coordination Models and Languages
Verlag: Springer Berlin Heidelberg
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Interlocking tables are the functional specification defining the routes, on which the passage of the train is allowed. Associated with the route, the states and actions of all related signalling equipment are also specified. This paper formally models the interlocking tables using Coloured Petri Nets (CPN). The CPN model comprises two parts:
Signaling Layout
and
Interlocking Control
. The
Signaling Layout
part is used to simulate the passage of the train. It stores geographic information of the signalling layout in
tokens
. The
Interlocking Control
part models actions of the controller according to the functions specified in the interlocking tables. The arc inscriptions in the model represent the content of the interlocking tables. Following our modelling approach we can reuse the same CPN net structure to model any new or modified interlocking system regardless of its size. Experimental results are presented to provide increased confidence in the model correctness.