1. What
Like the nerve system in human body
- ECU like the body parts
- Sensor can broadcast the data and share in the can bus
Hardware level
- CAN High
- CAN Low
2. Why (Main Benefical)
- Simple and Low cost
- Fully Centerlized
- Extremely Robust (抗干扰)
- Effcient, with priority ID
3. History
BOSCH CAN 1986
CAN 2.0 1991
International standard 1998
4. Message / Frame
8 fields
- SOF
- CAN ID
- RTR
- Control, extension for ID
- Data, actual information
- CRC, redundancy check
- ACK
- EOF
5. Record and Decode
ID and Data, use a logger