Question

Briefly describe each step in the design of a CAN communication network for a car that consists of a central unit (ECU) and four monitoring systems (fuel, brake, heating, engine). Use your “P” number as your ECU input identifier. Use a filter and mask to differentiate messages from different monitoring systems and discuss the assigned filter ID and mask ID.

Answer 1

1.The controller area network is used in vehicles for communication between EUCs,sensors and actuators.

The CAN protocol is robust,low cost and frame based.

Originally developed and launched by Robert Bosch in 1986.

Essential to many applications examples like cars,trucks,tractors,industrial robots,....

Imagine that your car is like a human body:

The controller area network is the nervous system enabling communication between all parts of the body.

Similarly,nodes are like muscles connected via the CAN bus , which acts as a central networking system.In turn,electronic control units are like arms and legs.

Critical advantages of CAN bus communication are:

1.Low cost : ECUs communicate via a single CAN interface,not direct analogue signal lines,reducing errors,weights,costs.

2.Centralized : The CAN bus system allows for central error diagnosis and configuration across all EUCs.

3.Robust : The system is robust towards electric disturbance and electromagnetic interference,making it ideal foe example vehicles.

4.Efficient : Can frames are prioritized by ID the top priority gets bus access yet frames are not interrupted.

5.Flexible: Each CAN connected to ECU can receive all transmitted messages.It decides relevance and acts accordingly this allows easy