Method and apparatus for automatically generating a component fault tree of a safety-critical system

US10061670B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Kai Höfig · Hersbruck, DE
• Marc Zeller · Hersbruck, DE

Key dates

• Filing date: Dec 28, 2015
• Grant date: Aug 28, 2018
• Expiry date: Dec 28, 2035

Classification

• Technology area (CPC G): Physics
• CPC primary: G06F16/22
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

Abstract

An apparatus includes an input that receives a continuous function chart for each component of the investigated safety-critical system. A processor generates a corresponding component fault tree element. Inports and outports of the component fault tree element are generated and interconnected based on unique names of the inputs and outputs of the corresponding continuous function chart of the respective system component. Input failure modes and output failure modes are generated based on generic mapping between connector types of the continuous function chart and failure types of failure modes of the component fault tree element. The input failure modes of a component fault tree element are connected to output failure modes of the component fault tree element via internal failure propagation paths based on interconnected function blocks of the continuous function chart of the respective system component. An output outputs the generated component fault tree of the safety-critical system.