The article describes a simplified ISO 26262 meta model as well as breaks it down into its core sections.
While the FMEA and FTA models are hard-coded, the rest of the ISO 26262 meta model is configurable. Our recommendation, however, is to use the SIDs presented in this article for the configurable parts of ISO 26262.
This meta model graph displays the basic ISO 26262 meta model. A more extended model is available by contacting email@example.com.
(Click on the image to zoom in.)
The Analysis area (12FA) is broken down into the following core parts:
- Hazard Analysis Area (HARA)
- Functional Safety Concept
- Technical Safety Concept
Hazard Analysis and Risk Assessment (HARA)
The HARA analysis area is where much of the safety and quality work and data is gathered.
Functional Safety Concept
Technical Safety Concept
Views Supporting Safety Analysis Work
FTA and FMEA
The aim of safety analysis work is to ensure that there are no violations of safety goals. ISO 26262 recommends two methods of safety analysis - deductive analysis and inductive analysis.
The SystemWeaver swExplorer provides users with the views needed to complete the analysis:
- The Failure Mode and Effects Analysis (FMEA) view and project for deductive analysis (a top-down approach) (Described in the application Help)
The Fault Tree Analysis (FTA) view for inductive analysis: (a bottom-up approach)
The Hazard Identification views for hazard, hazardous event and safety goal identification
For an overview of the FTA, FMEA, and HARA meta models and view configurations, see: