NewsNew BMW 7Series with byteflight BMW has started the series production of the new BMW 7Series, using byteflight for the first time in a volume production vehicle. In this first application, byteflight is used to network 13 electronic control units in a passive safety system called ISIS (Intelligent Safety Integration System). Using fiber optic technology byteflight fulfills the highest requirements concerning transmission rate (10 Mbps), reliability and immunity from interference. Besides the high priority safety-related data, such as the values from eight accelerometers, two pressure sensors, seat occupation and belt buckle switch information, also body and convenience equipment and part of the powertrain control data are distributed via the byteflight network as well. The distributed computing power and distributed sensors (close to impact locations ensuring low mechanical propagation time), the synchronous use of signal characteristics instead of fire / no fire information (better misuse recognition), redundant information with high update rates (4 kHz) are the guarantee of greater accuracy and reliability for faster deployment decisions, (e.g. 3 to 4 ms for side impacts). With all these features, ISIS is outperforming all passive safety systems on the market. Relevant data is exchanged with the two CAN networks and the diagnosis interface via a gateway. Using the diagnosis interface and flash EEPROM technology (HC12BD32), all ECUs can be reprogrammed via flash download, without removing them from the car.
Using byteflight for data communication, the new BMW 7Series car is the first series vehicle with shift-by-wire (fiber) on the market. The new BMW 7Series will be presented to the public at the 2001 Frankfurt Motor Show from the 13th to the 23rd, September. For more details about The Ultimate Driving Machine see: http://www.anewwaytodrive.com/
Avidyne has chosen byteflight to network avionics equipment. Avidyne is a US company and produces avionics equipment for the general aviation market. They are interested in adopting data bus technology to interconnect discrete pieces of avionics equipment on the aircraft in order to eliminate some of the weight and expense of the current point-to-point wiring. They did an industry research on data bus systems, comparing 27 protocols including CAN and TTP. The winner was byteflight! They decided to use byteflight for their future avionics networks with an outlook on FlexRay. They are member of NASA`s Advanced General Aviation Transport Experiments (AGATE) Project and the General Aviation Manufacturer's Association (GAMA). You can find Avidyne´s Data Bus Technology Selection at: Avidyne Databus Technology Selection (pdf file, 230 kB)
Motorola shipped first engineering samples of a new microcontroller with a byteflight interface. The MC9S12DB128 is a 16-bit device with 128k bytes of Flash EEPROM, 8k bytes of RAM, 2k bytes of EEPROM, a byteflight interface, two CAN 2.0 interfaces and several other on-chip peripherals and an internal bus speed of 25 MHz. Find out more details about the MC9S12DB-Family in the Product brief at: MC912DB_Family (pdf file, 148 kB)
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