基于CAN总线的煤矿实时通信协议研究  

Research on Coalmine Real-time Communication Protocol Based on CAN Bus

作　　者：孙彦景[1] 李燕[1] 钱建生[1] 马晓栋[2] 

机构地区：[1]中国矿业大学信息与电气工程学院,徐州221008 [2]中国矿业大学计算机学院,徐州221008

出　　处：《计算机工程》2010年第10期236-238,共3页Computer Engineering

基　　金：国家"863"计划基金资助项目(2007AA06Z114);江苏省高新技术基金资助重大项目(BG2007012);中国矿业大学科研基金资助项目(OC080303)

摘　　要：根据煤矿监控系统中周期数据和非周期数据对时间的不同要求,在CAN总线非破坏性优先权逐位仲裁规则的基础上,提出一种节点传递法则,有效地减小数据碰撞的概率,解决帧传输延时的不确定性,提高信道的使用率和传输数据的实时性,介绍该实时通信协议,给出例外事件的处理方法,讨论并分析帧最大传输延时的具体计算方法。According to the different demands of periodic and aperiodic data,the regulation of node transfer is presented based on non-destroyed priority bit-by-bit arbitrate regulation.The probability of data collision is minished effectually,and a limited transmission time is ensured.The maximum delay time is made adjustable and the real-time of the data communication is improved.The real-time protocol is described detailedly and the method of exception is given.View of the new protocol,the calculating methods of maximum transmitting delay is discussed and analyzed.

关 键 词：节点传递法则 最大传输延时 CAN总线 实时通信协议 

分 类 号：N945[自然科学总论—系统科学]