基于TTCAN协议的井下通信网络研究  

Research of Underground Communication Network Based on TTCAN Protocol

作　　者：李颀[1] 翟佳[1] 胡海强[1] 

机构地区：[1]陕西科技大学电气与信息工程学院,陕西西安710021

出　　处：《工矿自动化》2012年第10期33-36,共4页Journal Of Mine Automation

基　　金：陕西省科技厅工业攻关项目(2011K06-41)

摘　　要：针对煤矿井下CAN通信网络中低优先级数据延迟较大而存在实时性与确定性较差的问题,提出了一种基于时间触发机制的TTCAN协议;给出了由主站节点和多个从站节点构成的TTCAN网络系统硬件结构,详细介绍了基于Level 1同步方式的TTCAN调度算法的设计。实验结果表明,与标准的CAN网络相比,TTCAN网络的最大响应时间和最大发送周期抖动指标几乎不受信息量的增加与优先级减小的影响,具有更好的实时性与确定性。In view of problems of bad real-time performance and uncertainty caused by big delay of low priority data existed in underground CAN communication network, the paper proposed a TTCAN protocol based on time-triggered mechanism. It gave hardware structure of TTCAN network system composed of master node and slave nodes, introduced design of TTCAN dispatching algorithm based on Level 1 synchronization mode. The experiment result shows that the biggest respond time and the biggest sending cycle jitter of TTCAN network are almost not influenced by increasing of information and reducing of priority comparing with standard CAN network, so TTCAN has better real-time performance and certainty.

关 键 词：CAN通信 优先级 数据延迟 TTCAN协议 时间触发机制 时间同步 矩阵周期 

分 类 号：TD655[矿业工程—矿山机电]