AuthorsM. Sabetzadeh, S. Nejati, L. C. Briand and A. E. Mills
TitleUsing SysML for Modeling of Safety-Critical Software-Hardware Interfaces: Guidelines and Industry Experience
AfilliationSoftware Engineering, Software Engineering, Software Engineering
Project(s)The Certus Centre (SFI)
Publication TypeProceedings, refereed
Year of Publication2011
Conference Name13th IEEE International High Assurance Systems Engineering Symposium (HASE'11)
Place PublishedBoca Raton, FL

Safety-critical embedded systems often need to undergo a rigorous certification process to ensure that the safety risks associated with the use of the systems are adequately mitigated. Interfaces between software and hardware components (SW/HW interfaces) play a fundamental role in these systems by linking the systems' control software to either the physical hardware components or to a hardware abstraction layer. Subsequently, safety certification of embedded systems necessarily has to cover the SW/HW interfaces used in these systems. In this paper, we describe a Model Driven Engineering (MDE) approach based on the SysML language, targeted at facilitating the certification of SW/HW interfaces in embedded systems. Our work draws on our experience with maritime and energy systems, but the work should also apply to a broader set of domains, e.g., the automotive sector, where similar design principles are used for (SW/HW) interface design. Our approach leverages our previous work on the development of SysML-based modeling and analysis techniques for safety-critical systems. Specifically, we tailor the methodology developed in our previous work to the development of safety-critical interfaces, and provide step-by-step and practical guidelines aimed at providing the evidence necessary for arguing that the safety-related requirements of an interface are properly addressed by its design. We describe an application of our proposed guidelines to a representative safety-critical interface in the maritime and energy domain.

Citation KeySimula.simula.804