Image Processing Reference
In-Depth Information
19.1 Introduction
Volcano is a holistic concept defining a protocol-independent design methodology for distributed
real-time networks in vehicles. he concept is dealing with both technical and nontechnical entities
(i.e., partitioning of responsibilities into well-defined roles in the development process).
The vision of Volcano is “Enabling Correctness by Design.” By taking a strict systems engineering
approach and focusing resources into design, a majority of system-related issues can be identified
and solved early in a project. he quality is designed into the vehicle, not tested out. Minimized cost,
increased quality, and high degree of configuration/reconfiguration flexibility are the trademarks of
the Volcano concept.
The Volcano approach is particularly beneficial as the complexity of vehicles is increasing very
rapidly and as projects will have to cope with new functions and requirements throughout their
lifetime.
A unique feature of the Volcano concept—the solution called “Post-Compile-Time Reconfigura-
tion Flexibility” where the network configuration containing signal-to-frame mapping, ID assign-
ment, and frame period—is located in a configurable flash area of the electronic control unit (ECU),
andcanbechangedwithouttheneedfortouchingtheapplicationsotware,thuseliminatingtheneed
for revalidation, saving cost and lead time.
The concepts origins can be traced back to a project at Volvo Car Corporation in - when
development of Volvo's new “Large Platform” has taken place (Figure .). It is reusing solid industrial
experience, and is taking into account recent findings from real-time research.
The concept is characterized by three important features:
Ability to guarantee the real-time performance of the network already at the design stage,
thus significantly reducing the need for testing
Built-in flexibility enabling the vehicle manufacturer to upgrade the network in the
preproduction phase of a project as well as in the aftermarket
Efficient use of available resources
The actual implementation of the concept consists of two major parts:
Off-line tool set : For requirement capturing and automated network design (covering mul-
tiple protocols and gateway configuration). It is providing strong administrative functions
forvariantandversionhandling,neededduringthecompletelifecycleofacarproject.
CAN high speed (250 kbit)
CAN low speed (125 kbit)
PDM
ECM
AUM
PHM
TCM
CCM
UEM
ETM
SRS
SWM
SAS
DIM
RTI
PSM
ABS
REM
CEM
DDM
FIGURE .
Volvo S main networks.
 
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