一种主从式的CAN总线高层协议设计及应用  

Design and Application of a CAN Higher Layer Protocol with Master-Slave Mode

作　　者：方仕雄[1] 李奇[1] 

机构地区：[1]东南大学自动控制系,江苏南京210096

出　　处：《测控技术》2006年第8期47-49,共3页Measurement & Control Technology

基　　金：国家863高技术研究发展计划(2004AA306H10)

摘　　要：针对空间粒子探测器阿尔法磁谱仪的地面测试系统,设计一种主从模式的CAN高层协议,通信采用请求/响应方式,即有确认的通信。详细介绍了协议的数据包格式和CAN标识符分配。基于实时操作系统,介绍了协议的软件实现。应用结果表明,该协议满足系统通信带宽要求,且能保证高可靠的通信。To satisfy the requirements of the reliability and predictability of on-board real time communication, a higher layer CAN protocol with master-slave mode is developed, in which the communication is implemented in a command/response way, i.e. connection-orlented communication. The format of the data blocks for higher layer application and the assignment of the CAN identifier are described in detail. The implementation of the proposed protocol is based on the real time operating system and the performance is evaluated on the control and monitoring system of the ground test platform for alpha magnetic spectrometer （AMS）, a physical particles detector which will be running in space. The test results show that the proposed higher layer protocol can guarantec a high reliable communication.

关 键 词：CAN总线 高层协议 实时通信 机载数据系统 

分 类 号：TP27[自动化与计算机技术—检测技术与自动化装置]