计算机工程 ›› 2010, Vol. 36 ›› Issue (10): 236-238.doi: 10.3969/j.issn.1000-3428.2010.10.082

• 工程应用技术与实现 • 上一篇    下一篇

基于CAN总线的煤矿实时通信协议研究

孙彦景1,李 燕1,钱建生1,马晓栋2   

  1. (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)
  • 出版日期:2010-05-20 发布日期:2010-05-20

Research on Coalmine Real-time Communication Protocol

SUN Yan-jing1, LI Yan1, QIAN Jian-sheng1, MA Xiao-dong2   

  1. (1. School of Information and Electrical Engineering, China University of Mining & Technology, Xuzhou 221008;2. School of Computer, China University of Mining & Technology, Xuzhou 221008)
  • Online:2010-05-20 Published:2010-05-20

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。

关键词: 节点传递法则, 最大传输延时, CAN总线, 实时通信协议

Abstract: 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.

Key words: node transfer rule, maximum transmission delay, CAN bus, real-time communication protocol

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