本文论述了CAN 总线系统中CAN 适配卡的重要作用,在分析其他CAN 适配卡实现 方案优缺点的基础上提出了一种基于USB 的新型CAN 适配卡的实现方案,并详细的 阐述了设计方法,给出了具体的软硬件实现方案。 关键词:CAN;USB;适配卡 Abstract: This paper describes the importance of CAN adapter in CAN bus system. On the basis of discussing the advantages and shortcomings of other implementations, it introduces a new CAN adapter based USB, including both the design and the implementation of hardware and software. Key words: CAN; USB; Adapter