Combining Graph-based Guidance with Error Effect Simulation for Efficient Safety Analysis
Jo Laufenberg, Sebastian Reiter, Alexander Viehl, Oliver Bringmann, Thomas Kröpf, Wolfgang Rosenstiel · 2016
The increasing number of complex embedded systems used in safety relevant tasks produces major challenges in the field of safety analysis. This paper presents a simulation-based safety analysis that will overcome these challenges. The presented approach consists of two parts: an Error Effect Simulation (EES) and a graph-based specification. The EES is composed of a system simulation with fault injection capability and a generic fault specification. The graph-based specification approach guides systematically the EES and enables a very efficient exploration of the analysis space. Inherent in the graph-based specification is the documentation of the safety analysis and a coverage approach to assess the executed safety analysis. Combining these parts leads to an efficient and automatable framework for safety analysis. A use case of an interconnected electronic control system shows the application of the approach and highlights the benefits for a safety analysis, such as a failure mode and effect analysis.