An authoritative yet highly accessible guide to the design and operation of the FlexRay bus, the latest protocol for automotive network communicationsA translation of the French edition, originally published in January 2011, this work is the result of numerous training courses that Dominique Paret has given incompanies, and it provides detailed explanations of the design and operation of the FlexRay bus. Comprised of five parts the book covers: the FlexRay concept and its communication protocol; the FlexRay physical layer; synchronizationand global time and; architecture of a node, components and development aid tools for hardware and software.Provides comprehensive treatment of the FlexRaynetwork, including its implementation through a real automotive applicationIncludes the latest specifications (Version 3) concluded by the FlexRay consortium widely expected to become the industry standardWritten by an author with in-depth experience of automotive electronics, including FlexRay, and presenter of specialist training courses to the industryIncludes a review of industrial tools to help design and implement a FlexRay based distributor application INDICE: Preface xiiiList of Abbreviations xviiPart A 'SECURE REAL TIME' APPLICATIONS1 Reminders about the CAN Protocol 31.1 The Limitations of CAN 31.2 'Event-Triggered' and 'Time-Triggered' Aspects 42 The TTCAN Protocol 72.1 TTCAN - ISO 11898-4 72.2 Session Layer 82.3 Principle of Operation of TTCAN 83 Emergence of ‘X-by-Wire’ Systems 113.1 High Throughput and X-by-Wire 113.2 Redundancy 113.3 High-Level Application Requirements 133.4 High-Level FunctionalRequirements 14Part B THE FLEXRAY CONCEPT AND ITS COMMUNICATION PROTOCOL4 TheGenesis of FlexRay 194.1 The TTP/C Protocol 194.2 FlexRay 204.3 The FlexRay Consortium 204.4 The Aim of FlexRay 235 FlexRay and Real Time 295.1 Physical Time 295.2 Local Time 305.3 Global View at Network Level - Global Time 325.4 Summarising: Time and its Hierarchies in FlexRay 366 The FlexRay Protocol 416.1 History 416.2 General - Channels, Cycles, Segments and Slots 416.3 Channels andCycles 446.4 Segments 476.5 Communication Frames 576.6 'SW - Symbol Window' Segment 746.7 'NIT - Network Idle Time' Segment 767 Access to the Physical Layer 777.1 Definition of Tasks 777.2 Execution of the Communication Cycle 807.3 Frame ID (11 Bits) 807.4 Arbitration Grid Level 817.5 Conditions of Transmission and Access to the Medium during the Static Segment 837.6 Conditions of Transmission and Access to the Medium during the Dynamic Segment 847.7 Similarity of the Use of the Dynamic Segment to the Network Access of the CAN Protocol 887.8 Some Additions in the Case of FlexRay Being Used with Two Channels 89Appendices of Part B 91Appendix B1 Examples of Applications 93The BMW X5 (Development Code L6) 93A Little Strategy 93Global View of the Parameters of the FlexRay System 95Desired Functional Parameters 96Description and Justification of the Implemented Choice 97Appendix B2 Scheduling Problems - Application of the FlexRay Protocol to Static and Dynamic Segments 103Introduction 103Problems of ‘Real Time’ Systems 104FlexRay 108Scheduling Real Time Systems 109Different Approaches to Real Time Scheduling 113Scheduling in Single-Processor Systems 116Algorithms Based on Priorities 116Scheduling Communications in Distributed Systems 120Problem of Task Allocation in a Distributed System 121Scheduling Communications 121Policy of Assigning Priorities 126Class of Scheduling Problem 127Scheduling Algorithm 128Conclusion 129Part C THE FLEXRAY PHYSICAL LAYER8 Creation and Transmission (Tx) of the FlexRay Signal 1358.1 Creation of the Signal1358.2 Physical Representation of Bits 1368.3 Line Driver ‘Tx’ 1389 Medium, Topology and Transport of the FlexRay Signal 1439.1 Medium 1439.2 Effects Linked to Propagation 1469.3 Topologies and Consequences for Network Performance 1479.4 Single-Channel, Dual-Channel and Multi-Channel Communication Topologies 1519.5 The FlexRay Topologies 1539.6 Examples of Topologies 15910 Receptionof the FlexRay Signal 16510.1 Signal Reception Stage 16510.2 Processing of the Received Signal by the Communication Controller 17011 The Bit Error Rate (BER) 17511.1 Integrity of Signal and BER 17511.2 Eye Diagram 17511.3 Relationship between the Integrity of the Signal, the Eye Diagram and the BER 18012 Modelling and Simulating the Performance of a Network 18512.1 Modelling and Simulating the Performance of a Network and its Topology 18512.2 Modelling the Elements of the Network 18512.3 Simulation 18813 Summary on the Physical Layer of FlexRay 193Part D SYNCHRONISATION AND GLOBAL TIME14 Communication Cycle, Macrotick and Microtick 19714.1 The FlexRay Time Hierarchy 19714.2 Synchronisation ina Network of TDMA-FlexRay Type 19814.3 Proposed Solution to the Problem 20214.4 Application and Implementation of Corrective Values 21414.5 Summary 21815 Network Wakeup, Network Startup and Error Management 22315.1 Network Wakeup Phase 22315.2 Network Startup Phase 22515.3 Error Management 22616 FlexRay v3.0 23116.1 Protocol Enhancements 23116.2 Physical Layer Enhancements 23516.3 FlexRay and ISO 23916.4 FlexRay in Other Industries 240Part E ARCHITECTURE OF A NODE, COMPONENTS AND DEVELOPMENT AID TOOLS17 Architecture of a FlexRay Node 24517.1 The Major Components of a Node 24517.2 Architecture of the Processor and Protocol Manager 24518 Electronic Components for the FlexRay Network 24918.1 TheComponent Range 24918.1.1 FlexRay Protocol Manager 25018.2 EMC and EMC Measurements 26318.3 Protection from ESD 26518.4 Conformity Tests 26518.5 Bus Guardian 26719 Tools for Development, Integration, Analysis and Testing 27119.1 The V-Shaped Development Cycle 27119.2 DaVinci Network Designer (Point 1 of the V Cycle) 27119.3 CANoe.FlexRay 27319.4 FlexRay CANalyzer (Covers Points 2, 4 and5 of the V Cycle) 27619.5 Test and Diagnostics (Point 6 of the V Cycle) 27719.6 Features of the FlexRay Protocol 27819.7 Communication Interface 28020 Implementation of FlexRay Communication in Automotive Logic Controllers 28320.1 FlexRay and AUTOSAR 28320.2 The AUTOSAR Partnership 28420.3 Communication in an AUTOSAR System 284Appendix of Part E 29121 Conclusion 297Appendix 1 The Official Documents 299Appendix 2 Principal Parameters of the FlexRay Protocol 301Bibliography 311Index 313
- ISBN: 978-1-119-96406-3
- Editorial: John Wiley & Sons
- Encuadernacion: Rústica
- Páginas: 336
- Fecha Publicación: 26/01/2012
- Nº Volúmenes: 1
- Idioma: Inglés