i3 - January/February 2020 - 43

SAFETY FIRST
It should come as no surprise to read this: cars should be
safe. And for years, cars have been designed with safety
first. But what happens to safety when cars themselves are
reinvented?
While we were reimagining ways to create vehicle
architecture, we were simultaneously reimagining the
safety systems that would keep drivers safe should one
of the architectural components malfunction or fail. Our
team developed a three-layer, fail-operational design which
embeds resilience in all three layers (compute, network,
power). This embedded resilience means that, in the face
of a partial or total breakdown of a system, the vehicle is
still able to come to a safe stop.

S

COMPUTE: What happens in a critical computer
failure? We quickly realized we couldn't depend on a
centralized compute node, so we incorporate enough
redundant compute power into the architecture to
bring the vehicle to a safe stop.

S

NETWORK: What happens if there is a failure in the
network connectivity within the vehicle? Knowing
that the architectural real estate is already limited, we
knew we couldn't create an entire redundant network,
so we innovated a dual ring topology system. SVA's
ring topology is the intersection of flexibility and
affordability, where each node connects to two other
nodes, forming a continuous pathway - a ring - for
signals to travel through each node. This approach is
highly efficient and handles heavier loads better than
traditional star topology, allowing us to achieve the
redundancy we need in an affordable way.

S

POWER: Can we rely on only one power source as cars
have traditionally done? This was the quickest "no"
in recent memory. Our Smart Vehicle Architecture
solutions include smart, dual ring power supplies
with smart fusing, allowing us to affordably deliver
fail-operational performance.

In order to develop this holistic, fail-operational design, we
had to continually ask ourselves questions about all three
layers to ensure we had solutions for each.

Safety is the first thing we think about when we wake up,
the last thing we think about before we go to bed - and
everything in between. We're passionate about making
the future of mobility work, safely. And the foundation to
making this new world of mobility real begins with Smart
Vehicle Architecture.
LEE BAUER, VICE PRESIDENT OF MOBILITY ARCHITECTURE, APTIV



i3 - January/February 2020

Table of Contents for the Digital Edition of i3 - January/February 2020

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