Abstract:

For the traditional combination instrument, automotive digital instrument technology has limitations in terms of contents display and realtime data transmission. Thus we design a pure electric automotive digital instrument system based on CAN/LIN dual bus, and conduct an indepth analysis on the system network layered architecture and on the overall system hardware architecture platform. As for the system software, we develop an information exchange protocol and the system overall flow in detail. Both the test in laboratory simulation environment and actual vehicle installation running test show that the system is rich in display content, has good humancomputer interaction effect and strong realtime performance, thus verifying the reasonability and correctness of the system design.

Key words: electric vehicle;digital instrument;CAN/LIN bus