Study on next generation of in-vehicle network protocol for passenger vehicles based on CAN FD

Qijin Cai, Yong Xu

COMPUTER MODELLING & NEW TECHNOLOGIES 2014 18(12B) 33-38

School of Electronic Engineering and Automation of Guilin University of Electronic Technology, Guilin, Guangxi, China, 541004

Aiming at the next generation of in-vehicle network protocol system for conventional passenger vehicles and new energy passenger vehicles, an in-vehicle network protocol named as IOCAN is proposed using information-oriented idea based on CAN FD. By using longer ID field of extended frame and concepts of PDU, PGN, SPN in SAE J1939 protocols, the information management-oriented protocol frame are designed. With variable and higher bit rate of CAN FD and its maximum 64 bytes of data field, a data segment transmission strategy is put forward. Then the practicality of the system is demonstrated with the analysis of the application. Finally described is the framework of the in-vehicle network protocol of passenger vehicles with universal, normative and greater information capacity.