An Extended Hierarchical Safety Analysis for Software-Intensive System

摘要

Generally, safety analysis is difficult to apply to software that has the characteristic of resulting the wrong system behavior, not as a failure. So many researches continue to relate software safety analysis. This paper presents an extended hierarchical safety analysis method for software-intensive system which combines hierarchical safety analysis and software safety analysis. Failure mode and effect analysis (FMEA), Hazard and operability study (HAZOP) along with Software FMEA (SWFMEA) were applied to perform the safety analysis of model railway system.