0-0964324-1 964324-1 Connector Terminal Automotive Electronics Wire Connector

From the perspective of information sharing, modern typical control units include electronic control fuel injection systems, electronic control transmission systems, anti -hugging braking system (ABS), anti -slip control system (ASR), exhaust gas recycling control, cruise system and air -conditioning system Essence In order to meet the real -time requirements of various subsystems, it is necessary to share the public data of automobiles, such as engine speed, wheel speed, solar terms pedal position, etc., but the requirements of each control unit for real -time nature will be There are differences in differences. This requires that its data exchange network should be based on priority competition, and it has a high communication rate. The CAN bus is designed to meet these requirements.

The CAN bus hardware connection is simple, with good reliability, real -time and performance price ratio. The CAN bus can meet the needs of modern automated communication, and has become the most active one in the field of industry data bus communication. The main feature is:

① The CAN bus is the multi -main station bus, and each node can actively send information to other nodes on the Internet at any moment.

②CAN bus adopts unique non -broken bus arbitration technology. Nodes with high priority to transmit data can meet real -time requirements.

③ The CAN bus has the functions of point -to -point, a little point -to -multi -point and global broadcast transmission data.

④ The number of valid bytes per frame on the CAN bus is up to 8, and there are CRC and other verification measures. The data error rate is extremely low. In case a certain node occurs, it can be automatically separated from the bus, and other operations on the bus are not affected.

⑤ The CAN bus has only two wires. When the system is expanded, you can directly hang the new node on the bus. Therefore, the wiring is small, the system expansion is easy, and the modification is flexible.

⑥ CAN bus transmission is fast. When the transmission interval is less than 40m, the maximum transmission rate can reach 1MB/s.

The number of nodes on the CAN bus mainly depends on the bus drive circuit. In the CAN2.0B standard, its message identifier is almost unlimited.

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