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CAN will stay for quite a while, as will LIN. However, higher speed buses (esp. FlexRay and MOST) are very, very slowly being replaced by Automotive Ethernet (w
by _pmf_ 9y ago
CAN will stay for quite a while, as will LIN. However, higher speed buses (esp. FlexRay and MOST) are very, very slowly being replaced by Automotive Ethernet (which uses a proprietary physical layer, called BroadR-Reach). Where CAN used checksums (additional, application layer checksum in addition to the protocol layer) to prevent tampering (modifying live data), the Ethernet based protocols will use what AUTOSAR calls Secure On-Board communication, which features ECU-to-ECU end to end protection.
- muro 9y agoOh interesting. I left the car industry when flexray was the newest bus available and MOST wast only used by Audi (for their backseat screens or some such entertainment systems). The problem with flexray was that it was supposed to be reliable with redundant cabling, but manufacturers immediately turned around to use redundancy to double the bandwidth.
- Matthias247 9y agoThat's all true. Just two few to add: While CAN and LIN are used everywhere Flexray and MOST are used in different domains: Flexray for driving/safety related functions and MOST for infotainment. CAN will have a speed improved version CAN FD, which might see a lot of use in the more driving related ECUs - some say it might replace FlexRay uses there. Afaik SecOC can and will be used for all kinds of PDU based communication (Ethernet and CAN). The amount of PDUs which will be transmitted over Ethernet vs. classical bus systems will very heavily from OEM to OEM. Some are more invested in Ethernet, others not.