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978-3-8439-2755-0, Reihe Informatik
Safety Framework and Platform for Functions of Future Automotive E/E Systems
162 Seiten, Dissertation Technische Universität München (2016), Softcover, A5
To cope with the complexity and demanding safety properties of future automated driving systems, this thesis proposes a framework i.e., a model-based approach for specifying safety information, and a platform i.e., a fault-management layer for a run-time environment that preserves system safety at run-time. Design complexity is reduced by introducing a meta-model that standardizes and raises the abstraction level for specification of safety requirements and properties. A tool uses the meta-model to generate configuration information for the fault-management layer. The layer preserves system safety at run-time by facilitating error detection mechanisms and introducing novel fault handling mechanisms that enable safe adaptation on function and system level. Since the mechanisms are generic and configurable, they can be reused in different system contexts. By decoupling the function logic from the safety mechanisms, a clear separation between system functional features and non-functional properties is introduced.
To demonstrate the practical feasibility of the approach, the contributions of this thesis are applied in a computer based Linux virtual environment, test rack and in a prototypical vehicle. Moreover, fault-injection verification tests provide evidence regarding the system's safety and the effectiveness of the developed safety mechanisms in a concrete system context.