ByteFlight

ByteFlight is one of BMW in cooperation with Motorola, Elmos and Infineon developed system for safety -critical applications in automotive technology. The ByteFlight system was built to 2007 7 Series, 6 Series and 5 Series BMWs to transmit time-critical data of the airbag system and body electronics and chassis. With the model overhaul of the 5 Series and 6- Series ( E6x ) 2007 ByteFlight was removed from the vehicle and replaced by a Time-Triggered CAN. In the 2008 7- series (F01 ) FlexRay ByteFlight will replace.

ByteFlight has a data rate of 10 Mbit / s, and used as a transmission medium optical polymer fibers. ByteFlight is a network in a star topology with an intelligent star coupler.

In addition to the aforementioned automotive ByteFlight can be used in all real-time applications with ultra-low latency and high data throughput and also in environments with strong Störbeeinträchtigung.

As the CAN bus ByteFlight also works with a message-oriented transmission protocol: All messages are made ​​available to all ByteFlight stations available. The data packets (frames) of ByteFlight similar to the CAN data packets, the maximum length of the data field is 12 bytes. In order to achieve a predictable real-time behavior, ByteFlight works with the deterministic access methods TDMA, in which each connected bus station within a certain time a defined period of time (time slot) obtained for the data transfer.