【作者】 丁健；

【导师】 韩江洪；

【作者基本信息】 合肥工业大学 ， 计算机应用， 2007， 硕士

【摘要】 把嵌入式系统与网络相结合，构造能与网络相连接的智能节点，是目前控制、通讯、计算机等多学科的研究热点。这种智能节点可以是复杂昂贵的工业实时控制设备，也有可能是小巧经济可以接入Internet的智能家电。本文的工作致力于将嵌入式实时操作系统(RTOS)μC／OS-Ⅱ和应用最广泛的网络协议TCP／IP协议相结合，移植到51系列单片机上。这样的系统由内置64K程序Flash存储器的WinbondW5168EBP单片机，32K扩展数据存储器和RTL8019AS以太网络接口控制芯片构成。本系统最大的特点是在8位单片机上实现了HTTP协议。系统配置成功后，成为局域网中有独立IP地址的一个节点。局域网中的任一一台PC在IE浏览器的地址栏输入配置给系统的IP地址，就可以访问到存储在本系统中的超文本页面。单片机上实现TCP／IP的意义和价值在于：将原来孤立的控制单元改造成能够融合进控制网络和信息网络的节点。同时，以太网上运行的TCP／IP协议是一个开放的标准，它并不由某个厂商所控制。开放性和公开性使得开发具有自主知识产权的系统成为可能。本论文研究实现的基于RTOS和TCP／IP协议的分布式单片机测控系统，主要做了以下几个方面的工作：1实现了公开源码的嵌入式操作系统μC／OS-Ⅱ在51系列单片机Winbond W78E516BP上的移植；2通过合理选择，实现了TCP／IP协议栈中的部分内容。值得重点指出的是用8位单片机实现了HTTP协议，从而使得单片机成为了可以用IE浏览器直接访问的节点；3对本系统的硬件部分设计的电磁兼容性和软件部分的可靠性技木设计做了较为详细的研究；4分析了基于TCP／IP协议的分布式单片机测控系统的实时工作性能，提出了工业以太网的性能敏感因素和改进系统可靠性、稳定性的办法；同时对嵌入式系统的性能测试也做了研究。5系统用于系统的网络数据通信和远程控制。更多还原

【Abstract】 At present , to combine the embedded system with the intellectual node that can link with network is a hot research focus in many research fields including automation control, communication, computer science, etc. The system can be constructed by complicated and expensive industrial real-time control equipments, or the intellectual electrical home appliances of small size and low cost.Job of this paper devoted to transplanting the RTOS uC/OS-II and the TCP/IP protocols to the 51 serial MCU platform. Such a system is established by Winbond’s W5168EBP MCU with built-in 64K programmable flash memory, 32K expanded data memory and Ethernet network interface control chip- RTL8019AS.The most remarkable strength of this system is having realized the HTTP protocol on the 8bits MCU platform. After the system has been configured correctly, it will be a node with independent IP address in the Ethernet. Then any PC inside the same network can visit the system as a website through IE browser without any special software or hardware. You can input this IP address into the address bar of the IE browser, then you can visit the hypertext page stored in the system, through operating the control button on the page directly, the I/O output level of the MCU can be changed according to your operation.The purpose and the value of such a system are:1 The originally isolated control node will be transformed and can be merged into automation control network and information network.2 The TCP/IP protocols are open and free, it is not controlled by a certain manufacturer. It makes possible to develop the system with independent intellectual property right.This paper focuses on the following aspects:1 Transplanting the uC/OS-II RTOS to the specific platform;2 Realizing part of the TCP/IP protocols according to the system demand .The most remarkable point is the realization of the HTTP protocol in an 8bits MCU platform; 3 Researching EMC of hardware system design and ability technology design of software .4 Analyzing the system’s real-time performance with data from experiment, finding out the most important factor that determines the real time performance; And researching on Performance Testing of the Embedded System.5 Applying the system to the Simulation Research on Joint Operation of Multiple Power Generating Method in Marine Power Station on the fields of network communication and remote control.更多还原