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[1]刘睿.长距离数字化管输系统中精确时钟同步的设计方案[J].武汉工程大学学报,2013,(02):83-86.[doi:103969/jissn16742869201302018]
　LIU Rui.Design of precise clock synchronization in long distance digital pipeline system[J].Journal of Wuhan Institute of Technology,2013,(02):83-86.[doi:103969/jissn16742869201302018]
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长距离数字化管输系统中精确时钟同步的设计方案(/HTML)
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《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
期数:
2013年02期
页码:
83-86
栏目:
出版日期:
2013-02-28

文章信息/Info

Title:
Design of precise clock synchronization in long distance digital pipeline system
文章编号:
16742869(2013)02008304
作者:
刘睿
中煤科工集团武汉设计研究院，湖北 武汉 430064
Author(s):
LIU Rui
Wuhan Design and Research Institute of China Coal Technology and Engineering Group，Wuhan 430064,China
关键词:
IEEE 1588协议; 网络时钟同步; 自动化调度; 工业以太网
Keywords:
IEEE 1588 protocol;  network clock synchronization;  automated scheduling;  industrial ethernet
分类号:
TP273
DOI:
103969/jissn16742869201302018
文献标志码:
A
摘要:
针对各个站场内单独装设GPS接收器或其他精确时钟源的独立对时同步方式不能达到微秒级精度，成本较高的问题，提出通过长距离全线网络进行精确时钟同步的设计方案.从常用的多种网络对时方式中选择资源消耗最少且精确度最高的IEEE 1588网络精确时钟同步协议（IEEE 1588协议），实现从时钟偏移量的修正以及传输时延的修正，并通过一个精确的首端主时钟源周期性的对全线网络内所有从时钟进行校正.结合工程实际设计了时钟设备、交换设备和控制设备的具体架构、基本配置及其功能实现.通过德国赫斯曼公司的三层交换机MACH1140和美国罗克韦尔公司ControlLogix 可编程逻辑控制器等行业内主流成熟设备的系统配置，完成整体架构对IEEE 1588协议的支持.在全线局域网络缓存负荷率不超过50%的前提下，使长距离数字化管输系统全线的自动化设备能够作为从时钟，与首端的主时钟源在100 ns范围内实现精确时钟同步.
Abstract:
To solve the problem of difficult synchronization of all sample data under the condition that independent time tick synchronization method of global position system receivers or other accurate clock source can’t reach microsecond precision and result in the high general cost, IEEE 1588 network precise clock synchronization protocol（IEEE 1588）was chosen to realize revision of clock offset as well as transmission delay，and to revise all clocks within the whole network by an accurate master clock source periodically. Combined with the clock equipment in the practical project, the concrete framework of switching equipment and control equipment and the realization of basic configuration functions were designed. Main trend mature equipments of system configuration in this field, such as MACH1140 of the three layer switches of Hirschmann and ControlLogix PLC of American Rockwell，were used to implement the support for IEEE 1588 protocol from the overall frame. Under the condition that cache load of the whole line LAN is less than 50%, the whole line automation equipment of long distance digital pipeline transportation system is taken as the slave clocks to realize accurate clock synchronization with the master clock source within the scope of 100 nanosecond.

参考文献/References:

［1］杨传顺，袁建，李国华．分布式控制系统精确时钟同步技术\[J\]．自动化仪表，2012，33(4)：6669.［2］IEEE Instrumentation and Measurement Society．IEEE 15882002 IEEE standard for a Precision clock Synchronization Protocol for Networked Measurement and Control Systems\[S\]．New York：The lnstitute of Electrical and EletronicsEngineers，Inc，2002．［3］李晓珍，苏建峰．基于IEEE1588高精度网络时钟同步的研究\[J\]．通信技术，2012，44(3)：105107.［4］于鹏飞，喻强，邓辉，等．IEEE 1588精确时间同步协议的应用方案\[J\]．电力系统自动化，2009，33(13) ：99103．

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备注/Memo

备注/Memo:
收稿日期：20121121作者简介：刘睿 (1983)，男，湖北随州人，工程师.研究方向：长距离煤浆管道输送系统自动控制技术.
更新日期/Last Update: 2013-04-16