Drafting Blueprints for Car System Requirements

Capture, specification, and communication of requirements is now a critical issue in the product development process. Systems Modeling Language (SysML) was developed to address systems engineering needs. In this approach, use cases are developed along with lists of actions necessary to put them into practice. This paper focuses on the early phases of applying textual and diagrammatic narratives in requirements specification and examines a SysML-based representation of a development process as an example. The paper shows that the series of SysML representations lacks a nucleus around which the various phases of the development process can evolve. The paper produces a sample core by using a Flowthing Model (FM) and contrasts it with the multifarious textual and graphical descriptions of SysML to demonstrate the viability of FM for modeling of requirements and design phases.