NEWS
-
Safety issues stimulate systems design approach
It is the integration of safety features, such as stability control or
ABS, with information systems, enabled by in-vehicle networks, that is
driving a wholesale change in architectural-level design in
vehicles. Functionality such as drive-by-wire and autonomous
vehicle features will require considerably more complex control systems
than previously. Vehicle manufacturers are looking at the most
effective methods of managing complex electronics systems architectures.
The incoming trend is to take a more holistic approach to ECU and
network design, applying design-for-safety methodology to the whole
system, rather than safety-specific functions. The desire to
interconnect the fast-growing number of discrete ECUs, will give way to
the necessity of developing more highly integrated ECUs.
Based, for example, on 32bit multicore microcontrollers, or application
specific processors, these devices will provide built-in redundancy,
control multiple subsidiary ECUS, reduce component count and
consequently, BOM and manufacturing costs. Vehicle manufacturers
including PSA Peugeot Citroen and Renault are highlighting the
importance of bringing multicore capability into the Autosar standard,
for example. Autosar is regarded as the best approach to
optimising the benefits of advanced microelectronics technology at the
systems level. Although, the market is looking at the 2009 to
2012 timeframe for these developments, the supply chain is energised
and is beginning to respond.
Considerable cooperation between component and systems suppliers will
be essential. Indeed, it is already happening as the far-sighted
vendors are aligning themselves. Chip level partnerships are
hastening the integration of microcontroller, sensor, actuator and
analogue circuitry. Semiconductor and Tier 1 and 2 suppliers are
cooperating at a systems level.
Design, validation and deployment of these system-level, in-vehicle
networks are the challenges of the future. All partners are
looking for a breakthrough in hardware/software system-level design
methodologies. With the drive towards reducing automotive design
cycle time, the focus is shifting to finding new processes and tools to
handle this increasing complexity.
More articles in this category: