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Model Based Specification Validation for a Novel Railway Signalling System

机译:新型铁路信号系统的基于模型的规范验证

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In the development of automatic train protection and block (ATPB) railway signalling system, in order to guarantee the safety and reliability of its software system, formal method is adopted to analyze specification formally. Firstly, in order to improve the accuracy of translating original specification into formal specification, dynamic state translation is extracted to express the internal operation mechanism and state changes for every component, e.g. point, signals, trains. Followed by UML model is created for a comprehensive and object-oriented analysis of ATPB. Thirdly, a rigorous specification of system is established by VDM++ unambiguously without understanding deviation. At last, the specification is validated, such as internal consistency and combinatorial testing to ensure not only the correctness of specification itself, but also the satisfiability for the actual requirement.
机译:在自动列车保护与闭锁(ATPB)铁路信号系统的开发中,为了保证其软件系统的安全性和可靠性,采用形式化的方法对规范进行正式分析。首先,为了提高将原始规范转换为正式规范的准确性,提取动态状态转换以表示内部操作机制和每个组件(例如组件)的状态变化。点,信号,火车。其次是创建UML模型,用于对ATPB进行全面和面向对象的分析。第三,在不了解偏差的情况下,VDM ++会明确建立严格的系统规范。最后,对规范进行了验证,例如内部一致性和组合测试,以确保不仅规范本身的正确性,而且确保实际需求的可满足性。

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