Using a Domain Model to Precisely Describe function-agnostic Electric/Electronic-Architectures

Conference: AmE 2017 – Automotive meets Electronics - 8. GMM-Fachtagung
03/07/2017 - 03/08/2017 at Dortmund, Deutschland

Proceedings: GMM-Fb. 87: AmE 2017

Pages: 6Language: englishTyp: PDF

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Braun, Lisa; Armbruster, Michael; Fiege, Ludger (Siemens Corporate Technology, Munich, Germany)
Sax, Eric (Institute for Information Processing Technologies, Karlsruhe Institute of Technology, Karlsruhe, Germany)

The existing AUTOSAR Layered Software Architecture already points the way towards future automotive e/e-architectures. Functions are separated from the executing hardware by a non-functional runtime environment and the basic software. This allows easy and flexible updating, expansion, and reuse of software components. The functionality of such architectures is therefore not well-defined at the time of development. Instead of functional properties, cross-functional, non-functional properties such as fail-operational characterize the design of such e/e-architectures. This results in new degrees of freedom in design. In this paper, a model is presented that allows a structured, semi-formal description of the entire e/e-architecture, software, hardware, communication and, in particular, energy supply, without the initial definition of the complete functional scope. The idea of the AUTOSAR layered software architecture, a hierarchical description of elements of a software architecture for controllers, is taken up and converted into a SysML-based domain model for describing the entire automotive e/e-architecture. This allows the definition of elements and their links to each other in order to qualitatively discuss the design space and its degrees of freedom.