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Ascent Technologies has
spent a decade leading the way for multiplexing solutions in automotive
systems. Our expertise in multiplexing has taken the form of concept
development all the way through to production system verification and
validation. As new technologies arise, such as Class-2 Communications and
Intelligent Transportation System (ITS) Data Bus (IDB), Ascent Technologies
has been involved as a key technology transfer partner to the automotive
platform and supplier communities. Protocols
Based upon the Society of
Automotive Engineers J1850 Communications standard, Ascent Technologies has
developed communications sub-systems for General Motors, Chrysler, and Ford
automotive components. We supported the initial Protocol Development for the
General Motors variation, called Class 2, including developing software for
the first full-vehicle demonstration of functional-based message J1850
multiplexing. In the concept car
developed to demonstrate the functional-based message approach, Ascent
Technologies developed software for a total of seventeen separate
controllers. In addition, Ascent Technologies worked to modify the electrical
harness and integrated these controllers with the remaining vehicle
electronics. Based on results of the demonstration, the multiplexing solution
has been adopted by General Motors for its production vehicles, beginning
with the 1996 Cadillac line. The newest area in the
Multiplexed Communications arena for Ascent Technologies is the Intelligent
Transportation System (ITS) Data Bus (IDB) arena. Ascent Technologies is a
proud member of the IDB Forum and has been involved with this technology
since early 1998. As a consultant and prototype developer, Ascent has
supported a major automotive supplier with demonstration software and
technical review of IDB-C standards. Ascent Technologies is thrilled to be
involved with this technology. We are looking to provide consulting, development,
and training services to companies in this new and exciting field. Development Support
Ascent Technologies has
supported Tier 1 suppliers with prototype and production software services in
the area of communications sub-systems. To date, subsystems for more than
twenty different modules have been developed, tested, and verified at both
the module and vehicle level by Ascent Technologies. These subsystems have
been developed in both Assembly Language and High Level Languages. More than
ten different microcontrollers have been successfully targeted to support
these communication needs. Verification
Ascent Technologies was
instrumental in the verification of the first General Motors production
vehicle which utilized Class 2 multiplexing communications. This vehicle was
tested at our lab facility in Training
Ascent Technologies
believes that understanding multiplex technologies is critical given the
automotive markets drive to localize sensors and actuators to support
distributing the control functions. Ascent offers engineer-led technical
training courses in both J1850 and CAN technologies. Our courses provide
insight into the physical, logical and contextual operation of the particular
networks. In addition, the courses cover the strategy of the appropriate
higher level protocols. Students learn the basics and gain an understanding
of why the network is configured in a particular fashion. Multiplexing Standard Committees
Ascent Technologies
participates in SAE Multiplexing Standards committees and is the only non-GM
Company to have been a member of the GM Corporate Multiplexing Standards
committee. In addition, we are members of the IDB Forum, the industry group
focusing on the expansion of this up and coming technology. |
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