Automotive Engineering - March 2022 - 13

TECHNOLOGY REPORT
ADAS
GM and Qualcomm partner for Ultra Cruise
Ultra Cruise, General Motors' next generation
of hands-free 'Super Cruise'
ADAS technology, will be powered by a
scalable compute architecture featuring
a system-on-chip (SoC) design developed
by U.S. semiconductor company
Qualcomm Technologies Inc. As announced
by the two companies in
January, GM will be the first automotive
OEM to use Qualcomm's Snapdragon
Ride platform for ADAS use. The new
architecture features a 5-nanometer
Snapdragon SA8540P SoC and
SA9000P artificial-intelligence accelerator,
which Qualcomm claims is " industry
leading. "
SoC technology integrates, on a single
microchip, all or most components of
a computer, including a CPU (central
processing unit), input/output (I/O)
ports and secondary storage, with other
components including radio modems
and a graphics processing unit (GPU).
Ultra Cruise's compute, described by GM
as approximately the size of two laptops
stacked together, will be available in
2023 on vehicles including the Cadillac
Celestiq, a super-premium electric sedan
using GM's BEV3 platform and expected
to enter the market at more than
$100,000. In that vehicle, two
Snapdragon-based processors, including
high-performance sensor interfaces,
memory bandwidth and the Ultra Cruise
software stack, will provide the necessary
bandwidth for vehicle sensing,
mapping, localization, and driver monitoring,
according to the companies.
With the Qualcomm technology, Ultra
Cruise will have the capability to execute
hands-free driving " in 95% of all driving
scenarios, " GM promises. Noted Ken
Morris, GM VP of electric, autonomous
and fuel cell vehicle programs, " Despite
its relatively small size, Ultra Cruise's
compute will have the processing capability
of several hundred personal computers.
It will take qualities that have
distinguished GM's advanced driver-assist
systems since 2017 to the next level
with door-to-door hands-free driving. "
The Ultra Cruise compute is comprised
of two Snapdragon SA8540P
SoCs and one SA9000P AI accelerator
to deliver key low-latency control functions
on 16-core CPUs and high-performance
AI compute of more than 300
Tera Operations per second for camera,
radar and lidar processing. The
Teaser image of a
front quarter of the
upcoming Cadillac
Celestiq; its ADAS
will feature the new
GM-Qualcomm
Snapdragon processor.
Snapdragon SoCs are designed with
5nm process technology, enabling " superior
performance and power efficiency, "
Qualcomm said in a release.
The compute, along with
Snapdragon Ride SoCs, includes an
Infineon Aurix TC397 processor for
system safety integrity. The Aurix
TC397 is categorized ASIL-D - the
highest Automotive Safety Integrity
Level (ASIL). To minimize complexity
within the compute and reduce mass,
GM engineers opted for an air-cooled
instead of liquid-cooled thermal-management
system. The Ultra Cruise
compute also will have the capability
to evolve over time by leveraging
Snapdragon Ride's SoCs performance
and high-speed interfaces for future
expansion, the companies said. It will
also enable over-the-air (OTA) updates
through GM's new Ultifi software platform
and Vehicle Intelligence Platform
electrical architecture.
The new system will help power GMSnapdragon
aluminum
housing
for the UltraCruise
compute is
extensively finned
inside to aid heat
dissipation.
AUTOMOTIVE ENGINEERING
developed ADAS software and features
going forward. (Ultra Cruise currently is
considered an SAE Level 2 ADAS.). GM
noted that these capabilities were developed
in-house at the automaker's
engineering facilities in Israel, the U.S.,
Ireland and Canada. At CES 2022,
Qualcomm also announced that BMW
and Renault will adopt the Snapdragon
Ride platform by 2025.
Lindsay Brooke
March 2022 13
FROM TOP: CADILLAC; GM

Automotive Engineering - March 2022

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