Modelling Human Factors using the Systems Modelling Language

HFIDTC/2/WP2.8.9/1Version 2/ 24th September 2008HFI Activity orDeliverableHuman ComputerInterface DesignHuman MachineInterface DesignApplicability Explanation SysML Representation Applicable FiguresPartialPartialSysML can be used to detail human computerinteractions forming a basis to derive HCI needs at ahigh level. It can also include standard UML notationfor software design that will be meaningful to softwaredevelopers. In more detail specific human computerinteractions can be modelled behaviourally and thefeatures of an HCI detailed structurally. However thebest way to communicate an HCI design at any level ispictorially with explanatory text. SysML diagramsshould be used in conjunction with these representationsto provide the further ‘details’.SysML can be used to express the user interactions andthus to define the HMI needs. Structural diagrams canbe used to identify and detail interfaces and ‘ParametricConstraints Diagrams’ can also be used to record designconstraints relating to human physical characteristics.However it would be expected that CAD models such asPro Engineer or JACK would be used as the major basisfor design.Workspace Design Partial It is possible with Block Definition Diagrams to expressthe physical components of the system, theirrelationships and via Parametric Constraint Diagrams,human-related space constraints. However it would beexpected that CAD models from e.g. Pro Engineer orJACK would be used as the major basis for design.Human ReliabilityAssessment (HRA)PartialSysML can be used to capture operator tasks and thuscan form an input into an HRA. During modelling, notescan be added to areas of interest for further assessment.SysML would not replace an HRA process, but be aninput to it.Sequence Diagrams, ActivityDiagrams, Block DefinitionDiagrams, Requirements DiagramsSequence Diagrams, ActivityDiagrams, Block DefinitionDiagrams, Requirements Diagrams,Parametric Constraints DiagramsSequence Diagrams, ActivityDiagrams, Block DefinitionDiagrams, Requirements Diagrams,Parametric Constraints DiagramsN/A – Use SysML task model as aninput- Figure 7-18 Block DefinitionDiagram - HMC User Interface- Figure 7-19 Updated ActivityDiagram for the Compile TacticalPicture Process- Figure 7-20 - Updated ActivityDiagram for the Assess RequestProcess- Figure 7-21 - Block DefinitionDiagram – Situation Display- Figure 7-18 Block DefinitionDiagram - HMC User Interface- Figure 7-19 Updated ActivityDiagram for the Compile TacticalPicture Process- Figure 7-20 - Updated ActivityDiagram for the Assess RequestProcess- Figure 7-21 - Block DefinitionDiagram – Situation Display53