Image Processing Reference
In-Depth Information
16
FlexRay Communication
Technology
. Introduction .........................................
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. AutomotiveRequirements ...........................
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Cutting Costs
. WhatisFlexRay?.....................................
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Media Access
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Clock Synchronization
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Start-Up
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Coding
and Physical Layer
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Bus Guardian
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Protocol Services
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FlexRay Current State
. SystemConiguration ................................
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Roman Nossal-Tueyeni
Austro Control GmbH
Development Models
. StandardSotwareComponents......................
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Standardized Interfaces
References .................................................
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Dietmar Millinger
Elektrobit Austria GmbH
16.1 Introduction
New electronic technologies have dramatically changed cars and the way we experience driving. ABS,
ESP, air bags, and many more applications have made cars a lot more convenient, comfortable, and,
above all, safer. his trend of the past decade has been rather pleasant for the consumer, and a tedious
task for the automotive industry. The reasons for this drawback have not only to do with the need
of higher integration of the involved technologies. he very nature of the deployed communication
technologies makes the task of integration itself a lot more complex as well as the design of fault-
tolerant systems on top of these communication technologies rather difficult.
These limitations on the one hand as well as requirements and anticipated challenges of future
automotive applications on the other hand motivated OEMs and suppliers to join forces. The goal
of the founded FlexRay Consortium []: to establish one standard for a high-performance
communication technology in the automotive industry.
16.2 Automotive Requirements
Since OEMs and suppliers were the founding fathers of the FlexRay Consortium, it was clear from the
very beginning of the work on the new de facto communication standard that FlexRay has to meet
the requirements of the automotive industry. herefore, two key issues have driven the development
work for the communication protocol—the need for a technological basis and solution for future
safety-related applications and the need to keep costs down.
