Zusammenfassung
Die moderne Elektronik, gepaart mit entsprechender Software, bildet die Basis für die meisten Innovationen in modernen Autos. Die zahlreich verbauten Steuergeräte sind mit verschiedenen Bussystemen wie LIN, CAN oder FlexRay vernetzt und bieten so gemeinsam das nötige "Mehr" an Funktionalität, Sicherheit, Zuverlässigkeit, Komfort und Energieeffizienz. Ein von der Automobilindustrie neu entwickeltes Bussystem und standardisierte Software versprechen zuverlässigere Lösungen. Nichtsdestotrotz gibt es – gerade zumal der gesteigerten Komplexität – immer wieder auch seltene Fälle, dass Fehler im System verborgen bleiben. Dieser Artikel beschreibt einen Ansatz auf Systemebene, der ein holistisches Testen komplexer Fehlerfälle des Kommunikationssubsystems ermöglicht. Der Einsatz dieses Testwerkzeugs wird kurz anhand eines Demonstrator-Systems sowie anhand eines Experiments dargestellt, in dem die Lebensdauer von Cliquen für eine gegebene Konfiguration untersucht wird.
Summary
Typical cars are nowadays controlled by multiple electronic control units that are grouped into hierarchical, functional segments like power train, chassis and safety, body electronics, infotainment or comfort. All these control units are interconnected by various different bus systems and allow for the exchange of data in order to enable new features and increased functionality. In particular, automotive OEMs strive to improve safety, reliability, environmental efficiency and comfort in order to meet the market demands. Recently, the automotive industry has adapted FlexRay as a new bus protocol and standardized software interfaces in order to handle the involved complexity. Despite all these efforts, however, rare fault scenarios may go unnoticed and eventually cause undesired effects. This article describes a test-setup that will allow to test an automotive communication subsystem at the system level – a feat that is otherwise hard to setup. The applicability of this approach is shown by way of a dedicated demonstrator system and an experiment that evaluates the life expectancy of cliques.
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Horauer, M., Zauner, M. & Schuster, H. A system-level test for automotive communication subsystems. Elektrotech. Inftech. 128, 215–221 (2011). https://doi.org/10.1007/s00502-011-0002-z
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DOI: https://doi.org/10.1007/s00502-011-0002-z