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Multiplexed Networks for Embedded Systems: CAN, LIN, FlexRay, Safe-by-Wire...

ISBN: 978-0-470-03416-3
434 pages
July 2007
Multiplexed Networks for Embedded Systems: CAN, LIN, FlexRay, Safe-by-Wire... (0470034165) cover image

Description

Multiplexed networks are essential for the unified, efficient and cost-effective exchange of electronic information within embedded component systems. This is especially important in automotive manufacturing as vehicles become increasingly reliant on robust electronic networks and systems for improved reliability, anti-lock brake systems (ABS), steering, on-board navigation systems, and much more. The latest systems such as X-by-Wire and FlexRay aim to produce faster, fault-tolerant network component interconnects, for state-of-the-art network implementation and safer, more reliable engineering of vehicular systems.

This book provides a thorough and comprehensive introduction to automotive multiplexed network buses, covering the technical principles, components, implementation issues and applications.

Key features:

  • Presents a thorough coverage of the controller area network (CAN) protocol, including information on physical layers, conformity problems, hardware and software tools, and application layers.
  • Gives a detailed description of the new local interconnect network (LIN) bus, setting out its developments, properties, problems and ways to overcome these.
  • Examines the existing and emerging network buses such as time-triggered CAN (TTCAN), FlexRay and X-by-Wire.
  • Explores the possibilities for linking the various buses that are discussed, explaining how the Fail-Safe-System basis chip (SBC) and other gateways are designed and constructed.
  • Analyses wired and wireless internal and external serial links, including Safe-by-Wire plus, I2C, Media Oriented Systems Transport (MOST), remote keyless entry, tyre pressure monitoring systems (TPMS) and Bluetooth.

A valuable guide to embedded systems for a range of applications, Multiplexed Networks for Embedded Systems: CAN, LIN, FlexRay, Safe-by-Wire…is essential reading for electronics engineers and researchers developing electronics for the automotive industry. It is also useful for practising aerospace engineers and other practitioners interested in the application of network technologies, and advanced students taking courses on automotive and embedded system design.

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Table of Contents

Preface.

Acknowledgements.

Part A CAN: from concept to reality.

1 The CAN bus: general.

1.1 Concepts of bus access and arbitration.

1.2 Error processing and management.

1.3 Increase your word power.

1.4 From concept to reality.

1.5 Historical context of CAN.

1.6 Patents, licences and certification.

2 CAN: its protocol, its properties, its novel features.

2.1 Definitions of the CAN protocol: ‘ISO 11898-1’.

2.2 Errors: their intrinsic properties, detection and processing.

2.3 The rest of the frame.

2.4 CAN 2.0B.

3 The CAN physical layer.

3.1 Introduction.

3.2 The ‘CAN bit’.

3.3 Nominal bit time.

3.4 CAN and signal propagation.

3.5 Bit synchronization.

3.6 Network speed.

4 Medium, implementation and physical layers in CAN.

4.1 The range of media and the types of coupling to the network.

4.2 High speed CAN, from 125 kbits -1  to 1 Mbits -1: ISO 11898-2.

4.3 Low speed CAN, from 10 to 125 kbits -1.

4.4 Optical media.

4.5 Electromagnetic media.

4.6 Pollution and EMC conformity.

5 Components, applications and tools for CAN.

5.1 CAN components.

5.2 Applications.

5.3 Application layers and development tools for CAN.

6 Time-triggered protocols – FlexRay.

6.1 Some general remarks.

6.2 Event-triggered and time-triggered aspects.

6.3 TTCAN – Time-triggered communication on CAN.

6.4 Towards high-speed, X-by-Wire and redundant systems.

6.5 FlexRay.

Part B New multiplexed bus concepts: LIN, FlexRay, Fail-safe SBC, Safe-by-Wire.

7 LIN – Local Interconnect Network.

7.1 Introduction.

7.2 Basic concept of the LIN 2.0 protocol.

7.3 Cost and market.

7.4 Conformity of LIN.

7.5 Examples of components for LIN 2.0.

8 Think ‘Bus’, think ‘Fail-safe SBC’, ‘Gateways’.

8.1 Fail-safe SBCs: their multiple aspects and reasons for using them.

8.2 The strategy and principles of re-use.

8.3 Demo board.

8.4 Gateways.

8.5 Managing the application layers.

9 Safe-by-Wire.

9.1 A little history.

9.2 Safe-by-Wire Plus.

9.3 Some words of technology.

10 Audio-video buses.

10.1 I2C Bus.

10.2 The D2B (Domestic digital) bus.

10.3 The MOST (Media oriented systems transport) bus.

10.4 The IEEE 1394 bus or ‘FireWire’.

11 RF communication and wireless mini-networks.

11.1 Radio-frequency communication: internal.

11.2 Radio-frequency communication: external.

11.3 Wireless networks.

Conclusion.

Part C Appendices.

Appendix A. CiA (CAN in Automation).

Appendix B. Essential references.

Appendix C. Further reading.

Appendix D. Useful addresses.

Index.

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Author Information

Dominique Paret is currently the Technical Support Manager at Philips Semiconductors, France. He has worked at Philips for the past 15 years, on the areas of automotive electronics (CAN (Controller Area Network), LIN (Local Interconnect Network), very high speed buses, time triggered concept – FlexRay, Safe by Wire, SBC (Single-board Computer), fail safe systems) and identification, including smart cards, and RFID (radio frequency identification). He also has the role of representing Philips in several standardization organizations such as the French National Body (AFNOR), ISO (International Organization for Standardization) working groups for radio frequency identification and other consortiums for electronic automotive standards. In addition to this, he lectures for several technical schools in France and Pretoria, South Africa, and is an experienced author, having written a number of books, including RFID and Contactless Smart Card Applications (Wiley 2005, originally in French), 12C Bus: From Theory to Practice (Wiley, 1997; originally in French), and the French version of Réseaux Multiplexes pour Systèmes Embarqués: CAN LIN, FlexRay, Safe-by-Wire (Dunod, 2005).
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