Interoperable Toolchain for Requirements-Driven Model-Based Development

Abstract

International audienceThis paper introduces a toolchain for requirements-driven model-baseddevelopment of embedded software as used in the automotive industry.Development usually starts with textual functional requirements written innatural language.Verification of functional requirements required in safety critical systemsneeds traceability on system level andon implementation level. Therefore, the formalization of the providedtextual requirements is of vital importance. This however is a challenging taskingeneral, which we approach using an intuitive and graphical formalizationlanguage, namely simplified universal pattern. Having the requirementsformalized, as a second step an analysis is done to ensure that therequirements are in a consistent state. This is important as within agiledevelopment, functionalities are evolving over time and textual requirementsare continuously enhanced. To keep track of the implementation, an aggregationof model changes wrt, e.g., consistency, model test status, formal requirementcoverage, or modeling guideline conformance during project runtime isdone, while all information is visualized inside a single dashboard. Anexpressive running example implemented as Simulink model will beused to show the formalization and verification workflow using the providedtoolchain