Architecture Modeling - SPES 2020

Architecture Modeling
of a crash as a particular risk. The analyzed particular risk is a front crash in an angle of 146°
relative to the car’s orientation and a speed of 60 km h . The red trapezoid represents the sphere of
effect of the particular risk. This sphere of effect is based on a physical model that describes a
region in which the forces yield by the crash act in a destructive way. An interference analysis
shows that the geometric installations of both ECUs are inside the sphere of effect and therefore
affected by this particular risk. Thus, the redundant enhanced airbag system will fail in case of
this particular risk. This can be prevented by choosing another position for at least one of the
ECUs. Anyway, further particular risks like crash situations with other angles or different speed
have to be analyzed in order to identify a safe position.
Logical Perspective Technical Perspective Geometrical Perspective
Redundant
Airbag System
with Emergency
Call Function
ECU1
ECU2
ECU3
ECU4
(x,y,z)
Port ECU
(x,y,z)
Figure 3.22: PRA Analaysis for the enhanced Airbag-System
Front Crash
angle = 146°
speed = 60 km/h
(x,y,z)
Particular Risk Analysis in Architecture Modeling A model with relevant information
for a PRA covers following architecture modeling concepts. The geometric
system context is described by a GeometricComponent in the geometric perspective.
System components are specified as GeometricComponents, too. A
RichComponentProperty typed by a component of a technical perspective is allocated to
a GeometricInstallation of a GeometricComponent that represents the geometric
system component. The GeometricInstallation being a LocationInstallation
is assigned to a GeometricLocation and being a RoutedInstallation it
is assigned to a set of GeometricLocationLinkss and therefore to a set of
GeometricLocationss within the containing GeometricComponent. A particular risk
is a special GeometricFailureConditions of a GeometricComponent. It has a
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