Research on the improvement method of CAN bus based on CAN-FD

Abstract

CAN bus fault diagnosis of new energy vehicles is the main factor affecting the maintenance efficiency of new energy vehicles, so a convenient and fast diagnosis method is particularly important. The CAN bus fault diagnosis of new energy vehicles has gradually become an important factor affecting the promotion of new energy vehicles in the post-market. CAN plays a crucial role in industrial application especially in automotive industry. For adapting the Big Bang of data, CAN need to be improved. CAN FD is a protocol which is raised to solve some shortages in CAN.This paper focus the way how to improve the CAN based on CAN-FD.By contrasting these two communication protocols ,this paper analyzes the way to improve CAN in four aspects which is include physical layer,the length of data frame, the rate of the data transmission and the way about error validation. In conclusion, the improvement of CAN, not only the rate and the data size in data transmission should be stipulated, also make some change in many ways to adapt the requirement so that the data can be transmitted rapidly and efficiently.