控制系统网络为工业以太网结构，能够长期连续运行。
The control system network is based on industrial Ethernet structure and is capable of long-term continuous operation.
通过对当前工业控制系统的研究，结合工业控制现场的实际情况，设计了具有双冗余环结构的现场以太网结构，能够在较短时间内完成故障探测和修复。
Through the study of current industrial control system and the actual status of industrial control field, design an Ethernet structure used in industrial field with double redundancy ring.
和以往的指纹门禁单机系统相比，利用此方案，有以下优点：1可以节省系统成本，采用以太网结构对很多已有以太网网络系统的地方，不需要另外的专门布线，安装简单方便，便于扩容。
Compareing with single fingerprint Door-lock system, utilizing this scheme, we have three merits: 1, it can decrease system cost, we do not need other special wiring where there is exit network.
在以太网络环境里，复杂的规则制约了集线器的拓扑结构和使用范围。考虑到如今应该没人再对如何使用集线器搭建一个规模巨大的以太网感兴趣了，具体细节姑且不表。
Complex rules limit the topology and the use of hubs in Ethernet networks, but I'll skip those as I doubt anyone still has interest in building a large scale Ethernet network using repeater hubs.
网络结构采用标准以太网形式，内部以星形方式连接，使整个网络结构稳定，便于扩充，并且功能划分清楚，便于使用和操作。
The net structure is standard ether-net with star link as inner connecting to make the structure of whole net stable and convenient to expand, functions divided clearly and operating simply.
描述了基于以太网的无源光网络系统的框架结构、设计原则和网络规划；
The frame structures, design principles and network planning of system based on Ethernet Passive Optical Network (EPON) are described.
通过采用以太网星形结构的网络连接方式，将分散控制系统由总线形网络拓朴结构改为星形网络拓扑结构。
Through using network connecting mode of ether star structure, the distribubuted control system has been changed from busbar network topologic structure into a star network topologic structure.
介绍以太网控制器芯片rtl 8019as的结构和应用于多媒体网络中控的编程技术。
This paper introduces RTL8019AS Ethernet controller's structure and programmed technology that used in network central control system.
系统采用了基于以太网的TCP／IP协议和分级式网络结构，具有层次化和模块化特点；
The system uses TCP/ IP protocol based on Ethernet network and adopts hierarchy architecture. It has the properties of hierarchy and modularization.
在本文中针对以太网的业务层提出一种帧结构——用与适宜以太城域网。
This document provides architectural framework to model the Ethernet Services Layer-ETH Layer- of MEF compliant Metro Ethernet Networks (MENs).
运用MAC协议一种类型便是以太网，它被用于总线或星型拓扑结构。
One type of MAC is Ethernet, which is used by bus or star network topologies.
文章从体系结构的选择、交换机的组成框架、驱动程序的设计等方面论述和分析了快速以太网交换机硬件的总体设计。
This paper discusses and analyses the general design of the Fast Ethernet Switch from the aspects of the selection of the architecture, components and hardware drivers.
研究快速以太网在变电站自动化系统中的应用，提出了基于100M以太网的变电站通信网的网络结构。
Research the application of 100m Ethernet in substation automation system, and provide a new network configuration of substation automation system base on 100m Ethernet.
其中半实物仿真节点是自行设计的。仿真节点根据卫星运行轨道通过控制以太网接口模拟卫星网络星际链路切换，改变网络拓扑结构。
The semi-physical node controls the interface of Ethernet according to the satellite orbit and simulates the handoff of ISL, and so changes the topology of satellite network.
分析了以太网控制器的内部结构和工作原理，并用其设计了以太网接口电路。
The internal structure and principle of Ethernet controller are analyzed, and the Ethernet interface circuit is designed using this controller.
MAC地址表是以太网二层交换机中的一个重要数据结构，对MAC地址的学习和查找是实现以太网二层交换的必需功能。
The address table of MAC is an important data structure in the Ethernet two-layer switch. When the switch exchanges the information, it must study and Find the MAC address with the MAC address table.
在此基础上，设计研究了基于工业以太网的机动车安全性能检测监控系统的结构和功能。
Finally, the structure and function of automobile safety testing supervisory control system are designed and investigated.
还讨论了以太网交换机研制的关键技术。实践证明，该管理软件的体系结构合理可行。
Key techniques in developing the Ethernet Switchboard are discussed. The practice proved that the architecture of the management software proposed is feasible.
一旦网络部件出现故障，获得专利的容错以太网(FTE)网状拓朴结构通过将信号转入预备信道，确保了处理正常运行。
The patented fault tolerant Ethernet (FTE) network topology ensures process uptime in case of a network component failure by routing the communication through alternate channels.
详细分析了在工厂自动化网络底层——设备层使用以太网的可能性，并提出一个基于以太网的通信结构框架。
The possibility of using ethernet at low level(namely, device level)of factory automation network was analyzed in detail and a communication profile was proposed based on Ethernet.
详尽阐述了以单片机c 8051f 020和以太网控制芯片rtl 8019as为主要结构的硬件特点，进一步概述了实现的软件协议以及该系统所具有的良好的应用前景。
The feature of hardware which is mainly composed of C8051F020 and RTL8019AS is explained in detail, and software protocol and good application prospect of the system are summarized.
该部分重点解释了千兆以太网的体系结构和协议规范，对PCS、PMA和PMD子层的实现技术和有关算法的设计思想进行了深入的分析；
The implementation methods and related algorithms of PCS, PMA and PMD sublayers are analyzed. The physical chips used in the design are also introduced.
提出了以太网工厂自动化协议一致性测试的原理和方法，介绍了该协议一致性测试系统的体系结构。
Research and Implementation of the Protocol Conformance Testing System for Routing Protocol OSPF Based on UML Statechart;
提出了以太网工厂自动化协议一致性测试的原理和方法，介绍了该协议一致性测试系统的体系结构。
Research and Implementation of the Protocol Conformance Testing System for Routing Protocol OSPF Based on UML Statechart;
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