关键词: 嵌入式系统, 安全性验证, AltaRica模型, Promela模型

Abstract:  As the embedded system is widely used in the safety-critical fields such as aeronautics, astronautics and transportation, AltaRica is a kind of formal modeling languages for safety-critical systems. Modeling critical systems based on AltaRica model and the safety analysis upon this have become the industrial standard in Europe. This paper proposes a kind of embedded system safety verification method based on AltaRica model, which includes, firstly model the embedded system using AltaRica, then exhibit the transformation rules from AltaRica model to Promela model, at the same time do formal proofs on transformation rules, so as to acquire the Promela model of embedded system, and finally use SPIN, a model check tool, to analyze and verify it. This paper takes the control unit of wheel brake system as an example to verify this transformation rules and method.

Key words: embedded system, safety verification, AltaRica model, Promela model