Image Processing Reference
In-Depth Information
configuration means that the configuration parameters of the CCs are not generated during the run-
time of the system, but are determined throughout the development time of the system. he processes
for system development are not only mainly determined by the applied technology, but also driven
by industry-specific technical or organizational constraints. In the following section the background
for such a design process is described by first defining a model for the used information and second
explaining the information processing.
The information model categorizes information into eight information domains. his categoriza-
tion is comprehensive in the sense that each and every piece of development information belongs to
one of the information domains (see Figure .).
The functional domain defines entities called functions and the communication relations between
them. Functions describe the functionality of the entire system, creating a hierarchy from very
abstract high-level functions down to specific, tailored functions. A system normally comprises
more than one function. In a vehicle, for example, the functional hierarchy would feature “chassis
functions” on the top level, “steering functions” and “braking functions,” the latter being even more
detailed into “basic braking function,” “anti-lock brake functions,” and so on. A communication rela-
tion between functions or within a function starts at a sender function, connects the sender function
with receiver functions, and has an assigned signal.
C
Functional
domain
Func 1
A
Func 2
B
Func 3
Signal
domain
uint 8
max 200
min 0
int 16
max 32000
min -32000
A:
B:
Process
domain
Message
domain
A
BC
Function 1
Function 1
Message X
Message Y
Process
1.a
Process
1.b
Network
domain
Sender
ECU1
Receiver ECU2
Sender
ECU2
Receiver ECU1
Process
1.c
TDMA
domain
Dispatching
domain
Msg X
Msg Y
Slot 1
Slot 2
Slot 3
Process 1.a
Architecture
domain
Pr
oc
ECU1
ECU2
2.a
Process 1.b
Communication bus
FIGURE .
Information domains.
