嵌入式以太网精确时钟同步技术的应用研究
发布时间：2018-07-17 17:27
【摘要】：在信息技术迅猛发展的今天，越来越多的测控系统都建立在分布式的网络环境中，并需要高精度的时钟同步技术为其提供支持。嵌入式以太网通信及时钟同步技术作为一种应用于工业领域的高效通信与精确测量技术，在分布式系统的精确测量方面起到至关重要的作用。本文研究了基于IEEE1588精确时钟同步协议的嵌入式以太网通信应用系统，用以实现高精度的时钟同步性能。本文主要完成了以下工作： 1、给出了时钟同步系统硬件设计方案，包括硬件时间戳的实现、主控模块和以太网通信模块的设计以及GPS授时模块的设计； 2、设计了与硬件系统相对应的嵌入式以太网时钟同步软件系统，并分层介绍了软件架构，，实现了LwIP协议栈的移植； 3、搭建了时钟同步系统测试平台，对系统以太网通信各项性能进行了测试评估，并对时钟同步系统进行了三项时钟同步实验，实验结果显示本系统时钟同步精度能达到亚微秒级。 本文主要设计了嵌入式以太网时钟同步硬件平台，并进行了相关的软件开发和实验测试。最终，在对本平台的时钟同步实验中显示本时钟同步系统具备了亚微秒级的高精度时钟同步性能，达到了本课题的既定目标。
[Abstract]:With the rapid development of information technology, more and more measurement and control systems are built in the distributed network environment and need to be supported by high precision clock synchronization technology. The embedded Ethernet communication and clock synchronization technology, as an efficient communication and accurate measurement technology applied in the industrial field, plays an important role in the accurate measurement of distributed systems. In this paper, an embedded Ethernet communication application system based on IEEE 1588 precise clock synchronization protocol is studied to achieve high precision clock synchronization performance. The main work of this paper is as follows: 1. The hardware design scheme of clock synchronization system is given, including the implementation of hardware timestamp, the design of main control module and Ethernet communication module, and the design of GPS timing module; 2. The embedded Ethernet clock synchronization software system corresponding to the hardware system is designed, and the software architecture is introduced, which realizes the transplantation of the LwIP protocol stack. 3, the clock synchronization system testing platform is built. The performance of Ethernet communication is tested and evaluated, and three clock synchronization experiments are carried out. The experimental results show that the clock synchronization accuracy of the system can reach sub-microsecond level. This paper mainly designs the embedded Ethernet clock synchronization hardware platform, and carries on the related software development and the experiment test. Finally, in the experiment of clock synchronization on this platform, it is shown that the clock synchronization system has the performance of high precision clock synchronization in sub-microsecond order, and achieves the established goal of this subject.
【学位授予单位】：天津大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TP368.1;TP393.11
[Abstract]:With the rapid development of information technology, more and more measurement and control systems are built in the distributed network environment and need to be supported by high precision clock synchronization technology. The embedded Ethernet communication and clock synchronization technology, as an efficient communication and accurate measurement technology applied in the industrial field, plays an important role in the accurate measurement of distributed systems. In this paper, an embedded Ethernet communication application system based on IEEE 1588 precise clock synchronization protocol is studied to achieve high precision clock synchronization performance. The main work of this paper is as follows: 1. The hardware design scheme of clock synchronization system is given, including the implementation of hardware timestamp, the design of main control module and Ethernet communication module, and the design of GPS timing module; 2. The embedded Ethernet clock synchronization software system corresponding to the hardware system is designed, and the software architecture is introduced, which realizes the transplantation of the LwIP protocol stack. 3, the clock synchronization system testing platform is built. The performance of Ethernet communication is tested and evaluated, and three clock synchronization experiments are carried out. The experimental results show that the clock synchronization accuracy of the system can reach sub-microsecond level. This paper mainly designs the embedded Ethernet clock synchronization hardware platform, and carries on the related software development and the experiment test. Finally, in the experiment of clock synchronization on this platform, it is shown that the clock synchronization system has the performance of high precision clock synchronization in sub-microsecond order, and achieves the established goal of this subject.
【学位授予单位】：天津大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TP368.1;TP393.11
【参考文献】
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