2010 | OriginalPaper | Buchkapitel
Trustable Formal Specification for Software Certification
verfasst von : Dominique Méry, Neeraj Kumar Singh
Erschienen in: Leveraging Applications of Formal Methods, Verification, and Validation
Verlag: Springer Berlin Heidelberg
Aktivieren Sie unsere intelligente Suche, um passende Fachinhalte oder Patente zu finden.
Wählen Sie Textabschnitte aus um mit Künstlicher Intelligenz passenden Patente zu finden. powered by
Markieren Sie Textabschnitte, um KI-gestützt weitere passende Inhalte zu finden. powered by
Formal methods have emerged as a complementary approach to ensuring quality and correctness of high-confidence medical systems, overcoming limitations of traditional validation techniques such as simulation and testing. In this paper, we propose a new methodology to obtain certification assurance for complex medical systems design, based on the use of formal methods. The methodology consists of five main phases: first, informal requirements, resulting in a structured version of the requirements, where each fragment is classified according to a fixed taxonomy. In the second phase, informal requirements are represented in formal modeling language, with a precise semantics, and enriched with invariants and temporal constraints. The third phase consists of refinement-based formal verification to test the internal consistency and correctness of the specifications. The fourth phase is the process of determining the degree to which a formal model is an accurate representation of the real world from the perspective of the intended uses of the model using model-checker. Last phase provides an animation framework for the formal model with
real-time data
set instead of
toy-data
, and offers a simple way for specifiers to build a domain specific visualization that can be used by domain experts to check whether a formal specification corresponds to their expectations. Furthermore, we show the effectiveness of this methodology for modeling of a cardiac pacemaker system.