Research on Suppression Technology of Electromagnetic Interference in CAN Communication

Abstract

CAN communication is a relatively common communication method used in the industrial and automotive fields. It analyses the main cause of communication interference in the electromagnetic interference phenomenon of CAN communication in industry. Due to factors such as circuit imbalance and space electromagnetic field, the CAN bus will cause common mode interference due to radiation. The strong interference generated in the field may cause the relay to malfunction and cause the wrong signal. Therefore, this paper proposes protection measures against the malfunction of the relay from the perspective of signal input and relay triggering, and has strong anti-interference ability after testing in actual projects.

Research on the Design of Intelligent Network Bridge Based on CAN Bus

“…After the CAN interface of the bridge receives this message, it takes out the source address and reads the current time in the real-time clock, stores this information as a record, and saves it in the forwarding address table, so that it will be saved in the forwarding address table The addresses of all nodes in this network segment that are powered on. Similarly, when a node is finished and before exiting, it will also send offline information to the bridge interface, and delete the address information of the node in the forwarding address table [5,6].…”