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An Event-B model of an automotive adaptive exterior light system

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  • Special Section: ABZ 2020/2021
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Abstract

This paper introduces an Event-B formal model of the adaptive exterior light system for cars, a case study proposed in the context of the ABZ2020 conference. The system describes the different provided lights and the conditions under which they are switched on/off in order to improve the visibility of the driver without dazzling the oncoming ones. The system can be viewed as a lights controller that reads different information form the available sensors (key state, exterior luminosity, etc.) and takes the adequate actions by acting on the actuators of the lights in order to ensure a good visibility for the driver according to the information read. Our model is built using stepwise refinement with the Event-B method. We consider all the features of the case study, all proof obligations have been discharged using the Rodin provers. Our model has been validated using ProB by applying the different provided scenarios. This validation has permitted us to point out and correct some mistakes, ambiguities and oversights in the first versions of the case study description document.

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Acknowledgements

The authors would like to thank the case study authors, and Frank Houdek in particular, for his responsiveness and useful feedback during the modeling process when questions were raised or when ambiguities were found. The authors would also like to thank Michael Leuschel for his quick feedback on using ProB for this large case study.

Funding

This work was supported in part by the ANR projet DISCCONT and NSERC (Natural Sciences and Engineering Research Council of Canada).

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Authors and Affiliations

  1. SAMOVAR, Institut Polytechnique de Paris, Télécom SudParis, France

    Amel Mammar

  2. GRIC, Département d’Informatique, Faculté des Sciences, Université de Sherbrooke, Québec, Canada

    Marc Frappier

  3. LACL, UPEC, IUT Sénart, Université Paris-Est, Fontainebleau, France

    Régine Laleau

Authors
  1. Amel Mammar
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  2. Marc Frappier
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  3. Régine Laleau
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Correspondence to Amel Mammar.

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Mammar, A., Frappier, M. & Laleau, R. An Event-B model of an automotive adaptive exterior light system. Int J Softw Tools Technol Transfer 26, 331–346 (2024). https://doi.org/10.1007/s10009-024-00748-z

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