FlexRay is a
communication system that will support the needs of future in-car control applications. At
the core of the FlexRay system is the FlexRay communications protocol. The protocol
provides flexibility and determinism by combining a scalable static and dynamic message
transmission, incorporating the advantages of familiar synchronous and asynchronous
protocols. The protocol also supports:
- Fault-tolerant clock synchronisation via a global time base
- Collision-free bus access
- Guaranteed message latenc
- Message oriented addressing via identifiers
- Scalable system fault-tolerance via the support of either single or dual channels
A physical layer incorporating an independent Bus Guardian provides further support for
error containment. The FlexRay system is targeted to support data rates of up to
10Mbit/sec with increased flexibility for easy system extension and the dynamic use of
bandwidth. The 10Mbit/sec data rate is available on two channels, giving a gross data rate
of up to 20Mbit/sec.
FlexRay is targeted at meeting the needs of present and future in-car control
applications and the aim is to establish FlexRay as the de facto standard in the
automotive industry. |
