Developing a Domain Model for Relay Circuits

Publication: Research - peer-reviewJournal article – Annual report year: 2009

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In this paper we stepwise develop a domain model for relay circuits as used in railway control systems. First we provide an abstract, property-oriented model of networks consisting of components that can be glued together with connectors. This model is strongly inspired by a network model for railways madeby Bjørner et.al., however our model is more general: the components can be of any kind and can later be refined to e.g. railway components or circuit components. Then we show how the abstract network model can be refined into an explicit model for relay circuits. The circuit model describes the statics as well as the dynamics of relay circuits, i.e. how a relay circuit can be composed legally from electrical components as well as how the components may change state over time. Finally the circuit model is transformed into an executable model, and we show how a concrete circuit can be defined, checked to be legal, and the reaction to an input can be simulated.
Original languageEnglish
JournalInternational Journal of Software and Informatics
Publication date2009
Volume3
Issue2-3
Pages241-272
ISSN1673-7288
StatePublished

Keywords

  • formal methods, RAISE, relay circuits, domain modelling
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