Increasing the bit rate (up to 2Mbit/sec FD payload) on a functional safety critical vehicle (especially one such as construction machinery) is going to have significantly increased EMC and EMI issues. Has this been considered or is all this research purely academic? CAN FD in automobiles is a much smaller compact network with larger costs to implement in order to meet these EMC/EMI requirements, plus the EMC requirements for automotive and Construction/Agriculture are vastly different! One of the main reasons why J1939 (at 250Kbit/s) was adopted in the first place over the higher 500K/1Mbit used in automotive.
You need to distinguish between availability and functional safety. In the functional safety it is important that a failure is detected with a very high probability, very high confidence. Then when it is detected an action is taken, which most of the times is shutting down the system, so that availability becomes 0. In this regards EMI is not a problem at all, because EMI issues are part of the error detection. (Thilo Schumann)
Increasing the bit rate (up to 2Mbit/sec FD payload) on a functional safety critical vehicle (especially one such as construction machinery) is going to have significantly increased EMC and EMI issues. Has this been considered or is all this research purely academic? CAN FD in automobiles is a much smaller compact network with larger costs to implement in order to meet these EMC/EMI requirements, plus the EMC requirements for automotive and Construction/Agriculture are vastly different! One of the main reasons why J1939 (at 250Kbit/s) was adopted in the first place over the higher 500K/1Mbit used in automotive.
You need to distinguish between availability and functional safety. In the functional safety it is important that a failure is detected with a very high probability, very high confidence. Then when it is detected an action is taken, which most of the times is shutting down the system, so that availability becomes 0. In this regards EMI is not a problem at all, because EMI issues are part of the error detection. (Thilo Schumann)