Automotive

Flexray and its Applications: Real Time Multiplexed Network by Dominique Paret

By Dominique Paret

An authoritative but hugely obtainable consultant to the layout and operation of the FlexRay bus, the newest protocol for automobile community communications

A translation of the French variation, initially released in January 2011, this paintings is the results of quite a few education classes that Dominique Paret has given in businesses, and it offers specific reasons of the layout and operation of the FlexRay bus. created from 5 components the booklet covers: the FlexRay thought and its conversation protocol; the FlexRay actual layer; synchronization and worldwide time and; structure of a node, elements and improvement reduction instruments for and software program.

  • Provides complete therapy of the FlexRay community, together with its implementation via a true automobile program
  • Includes the newest requirements (Version three) concluded through the FlexRay consortium broadly anticipated to develop into the common
  • Written by way of an writer with in-depth event of automobile electronics, together with FlexRay, and presenter of expert education classes to the
  • Includes a assessment of business instruments to assist layout and enforce a FlexRay established distributor software

Content:
Chapter 1 Reminders concerning the CAN Protocol (pages 1–5):
Chapter 2 The TTCAN Protocol (pages 7–10):
Chapter three Emergence of ‘X?by?Wire’ structures (pages 11–16):
Chapter four The Genesis of FlexRay (pages 19–27):
Chapter five FlexRay and actual Time (pages 29–39):
Chapter 6 The FlexRay Protocol (pages 41–76):
Chapter 7 entry to the actual Layer (pages 77–90):
Chapter eight production and Transmission (Tx) of the FlexRay sign (pages 135–142):
Chapter nine Medium, Topology and shipping of the FlexRay sign (pages 143–163):
Chapter 10 Reception of the FlexRay sign (pages 165–173):
Chapter eleven The Bit blunders expense (BER) (pages 175–184):
Chapter 12 Modelling and Simulating the functionality of a community (pages 185–192):
Chapter thirteen precis at the actual Layer of FlexRay (pages 193–194):
Chapter 14 conversation Cycle, Macrotick and Microtick (pages 197–222):
Chapter 15 community Wakeup, community Startup and mistake administration (pages 223–230):
Chapter sixteen FlexRay v3.0 (pages 231–241):
Chapter 17 structure of a FlexRay Node (pages 243–248):
Chapter 18 digital elements for the FlexRay community (pages 249–270):
Chapter 19 instruments for improvement, Integration, research and trying out (pages 271–282):
Chapter 20 Implementation of FlexRay conversation in automobile common sense Controllers (pages 283–289):
Chapter 21 end (pages 297–298):

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Extra resources for Flexray and its Applications: Real Time Multiplexed Network

Sample text

1987: Introduction of the first sample of a CAN integrated circuit. 1989: Start of first industrial applications. 0’. 0A – identifier in 11 bits. 0B – identifier in 29 bits. – First vehicle – Mercedes Class S, equipped with 5 units communicating at 500 kbit/s. 1992: Creation of the ‘CiA – CAN in Automation’ – group of users. 1993: Creation of the ‘OSEK’ group. Appearance of the first application layer, CAL, of CiA. 1994: The first ISO standardisations, called ‘high and low speed’, are completed. PSA (Peugeot and Citroen) and Renault enter OSEK.

At the level of a node of the network, the granularity/ resolution/fineness/precision of the measurements of the time differences in FlexRay is therefore linked to this value. Obviously, the smaller the duration of the μTs, the finer the granularity will be. 5 ns), and two ticks are taken as forming a μT, giving it a period of 25 ns. 32 FlexRay and its Applications: Real Time Multiplexed Network Almost to the last comma, it is self-evident that all the nodes on a single network therefore have μT values (μT_i ) which are significantly different, representing the specific granularities of each.

Additionally, the number of μTs per MT can be different from one MT to another within the same node. Although at startup any one of the MTs consists initially of a whole number of μTs, the mean duration of all the MTs of a whole communication cycle can be a non-integer value; that is, it can consist of a whole number of μTs plus a fraction of a μT. It is these time adjustments, made by calculation, of the value of MTs – which are themselves directly linked to the μTs, which are in turn linked to the frequency of the microcontrollers of the CPUs – which provide the synchronisation between the signals which are present on the network and the microcontrollers.

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