Research on Suppression Technology of Electromagnetic Interference in CAN Communication

2019 4th Asia Conference on Power and Electrical Engineering

能源学;电工学

Li, Weibo^1 ; Xu, Cong^1 ; Le, Wei^1 ; Li, Qi^1 ; Lu, Yue^1

Wuhan University of Technology, College of Automated Institute, Wuhan

430070, China^1

关键词: Anti-interference;    CAN communications;    Common mode interference;    Communication interferences;    Communication method;    Protection measures;    Space electromagnetic fields;    Strong interference;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/486/1/012143/pdf
DOI  :  10.1088/1757-899X/486/1/012143

来源: IOP

【 摘 要 】

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.