基于PC/104系统的CAN总线智能适配卡  

Development of an Intelligent Adapter between CAN Bus Network and PC/104 System

作　　者：杨玮[1] 李民赞[1] 刘卉[1] 

机构地区：[1]中国农业大学现代精细农业系统集成研究教育部重点实验室

出　　处：《农业机械学报》2006年第7期113-115,124,共4页Transactions of the Chinese Society for Agricultural Machinery

基　　金：国家"863"高技术研究发展计划资助项目(项目编号:2003AA209040)

摘　　要：为实现车载田间计算机与外围设备的数据通信,设计了一种基于PC/104系统的CAN总线智能适配卡。由CAN总线接口、与CAN总线接口相连接的CAN总线收发器、与CAN总线收发器相连接的CAN总线控制器、总线插槽、高速光耦以及微处理器和并行接口电路组成。适配卡采用并行通信方式,提高了数据传输速率。完成了适配卡设备驱动程序VxD及上位PC机功能模块的设计。联机调试显示该适配卡工作稳定,满足设计要求。A kind of intelligent adapter between CAN bus network and PC/104 system was developed. The adapter consists of an interface of CAN bus network, a CAN receiver connecting with the interface, a CAN controller, a PC/104 bus-slot, a high speed opt coupler, a microprocessor and a parallel interface circuit. PC/104 system can take charge of transmitting and receiving data without performing maintenance of CAN bus because of using the microprocessor. Thus the system resource can be saved for other tasks. The adapter used parallel communication mode and had high data transmission rate. The drive VxD of the adapter and functional module of the PC/ 104 system were programmed. Debugging shows that the adapter works stably and satisfactorily.

关 键 词：车载田间计算机 PC/104总线 CAN总线 适配卡 

分 类 号：S24[农业科学—农业电气化与自动化] TP336[农业科学—农业工程]