Application and advantages of CAN bus in automobiles

In the automotive field, CAN bus is widely used due to its high reliability and real-time performance. Through the CAN transceiver, ordinary signals are converted into differential signals, which effectively resist external interference. Its data format is rigorous, including the start bit, identification code, RTR bit, control code, reserved bit, DLC bit, CRC check bit and ACK code, etc., to ensure the accuracy and integrity of the data. When multiple devices send control signals at the same time, the priority is determined by the 11-bit identification code. Compared with RS485, CAN bus has more advantages in the application of automobiles. For example, when the data is inconsistent, it will be resent, which improves the reliability of data transmission.