Why is using incar Ethernet as a replacement for CAN control

Why is using in-car Ethernet as a replacement for CAN (controller area network ) a very bad idea?

Solution

Answer:-

Controller area network condition:

The system monitor a communications network, e.g., a controller area network (CAN) and more specifically an in-car communications network by maintaining a count of each type of error code and a histogram of all network messages seen by each of the controllers during a measurement period and by determining a bus health index of the communication bus based upon a percentage of a given type of error to the total count of all errors during a measurement period. An individual controller or controller area network bus segment can be indicated as having a communications problem as a result of the health index.

System Comprising:

1) a communications network having a plurality of controllers communicatively coupled over the network by a communication bus the system comprising.

2) it\'s write program code associated with each controller of the plurality of controllers for maintaining a count of each type of error code and a histogram of all network messages seen by each respective one of the plurality of controllers during a measurement period.

3) A system for monitoring an in-vehicle communications network having a plurality of separate controllers for each one of a plurality of sensors and devices the controllers communicatively coupled over the network comprising.

4) The CAN Monitoring program health index calculation is based on user defined weights, the percentage of errors.

5) The most of the cars have CAN buses even if they still choose to use a different signalling standard on the OBDII connector for diagnostic purposes. However, since the pins are available for several signalling types many automotive manufacturers also provide access to one or more of the CAN buses on the OBDII connector. This enables technicians to connect one cable for a wide variety of vehicle processor manipulation.

6) This device can look for any signal changes outside the normal bit timing parameters. If it sees a very fast bit, it could signal the end user that abnormally fast bits were seen on the CAN bus.