【作者】 阮涵；

【导师】 王化祥； 黄晓玲；

【作者基本信息】 天津大学 ， 检测技术与自动化装置， 2004， 硕士

【摘要】 本课题针对目前Internet的普及，设计一套带网络接口的石油管道腐蚀检测装置，使检测的数据可以通过Internet传输，简化了嵌入式设备之间的通信，并有效的降低各种设备的成本，克服了通常的RS-232、RS485和CAN总线等接口相互不兼容的缺点。实现嵌入式设备的网络化，其重点是在单片机内实现网络通信协议，但是Internet上的主要通信协议—TCP/IP协议是一个庞大的协议族，单片机要实现全部协议是比较困难的，因此本课题的关键是如何精简通用的TCP/IP协议使之能够在单片机内运行。在通过分析标准TCP/IP以及根据实际嵌入式设备的要求，已实现了在单片机运行ARP、IP、ICMP、UDP和TCP协议。对于应用层，本装置提供两套可行的方案：一是采用UDP协议，远程PC机可以通过Windows的Socket编程与单片机通信；二是PC机不用编程，单片机实现WEB服务器，用户可以通过IE浏览器直接和单片机通信，并可以方便的对远程单片机进行监控。实验证明这种简化的协议能够稳定在单片机内运行，不仅在局域网内实现通信，还可以过网关实现与广域网的终端互连。随着网络技术的发展，嵌入式设备与Internet互连的应用前景将十分广阔。更多还原

【Abstract】 At present, the application of Internet is widely developing, a Erosion-detecting equipment of petroleum pipeline with network connection is designed, which can transmit data by Internet and cut down cost and overcome the incompatibility with RS232, RS485 and CAN buses. In order to make the embedded equipment connect with Internet, the communication protocols should be realized in MCU. However, the dominant protocol is TCP/IP, which is a various protocol variety. It is impossible for MCU to realize all the protocols and the key of this paper is how to simplify TCP/IP protocol that can operate in MCU. After analyzing the standard TCP/IP and real requirement, I simplify this protocol and only ARP, IP, ICMP, UDP and TCP protocols can run in MCU. About application, this device offers two feasible blue prints: one is using UDP protocol and remote PC can communication with MCU by using Socket program in Windows; other is WEB SERVER embedded in MCU and PC can only use IE BROWSER to visit and control MCU conveniently.Test show that these simplified protocols can run stably in MCU. It not only can communicate in the local area network, but also can communicate with terminal of the wide area network by gateway. Accompanying the network technology development greatly, the application of the embedded device connecting with Internet will present a broad prospect.更多还原