熊啟龍

(水利部淮河水利委員會水文局(信息中心)，安徽 蚌埠 233001)

　　摘 要：針對當前遙測終端機有線網絡通信能力不足，為使遙測終端機具備有線嵌入式以太網網絡通信功能，在分析目前常用的幾種代表性的網絡接口芯片應用特點的基礎上，以集成全硬件 TCP/IP 協議棧的嵌入式以太網控制器W5500芯片為例，介紹在遙測終端機中集成W5500芯片的應用設計與技術思路，分析其結構特點、接入方式、軟件驅動庫和使用方法，闡述遙測終端機的幾種常用網絡通信業務應用方式。通過在遙測終端機內嵌W5500以太網控制芯片，移植驅動庫，利用其提供的符合BSD Socket(伯克利套接字)的應用編程接口，開發人員不需要了解TCP/IP協議的細節，就可以與遠端建立Socket連接進行通信，使得終端機可以接入以太網中，作為其中的一個節點，建立起豐富的網絡應用。

　　關鍵詞：遙測終端機;有線嵌入式以太網;網絡結構;TCP/IP;W5500芯片;驅動庫

　　Application research of wired embedded Ethernet in telemetry terminal

　　XIONG Qilong

　　(Hydrological Bureau of the Huaihe River Commission, Bengbu 233001,China)

　　Abstract: In view of the insufficient wired network communication capability of the current telemetry terminal, in order to possess the telemetry terminal with the function of wired embedded Ethernet network communication, taking the embedded Ethernet controller W5500 chip, integrated with the full hardware TCP / IP protocol stack, as an example, this paper introduces the application design and technical idea of intgrating W5500 chip in telemetry terminal, analyzes its structural characteristics, access mode, software driver library and application method, and expounds several common network communication service application modes of telemetry terminal, based on the analysis of the application characteristics of several representative network interface chips commonly used at present. By embedding W5500 Ethernet control chip in the telemetry terminal, transplanting the driver library, using provided BSD-socket-compliant application programming interface, developers can establish socket connection and communicate with the remote without knowing the details of TCP/IP protocol, so that the terminal can be connected with Ethernet, and as one of the nodes, to establish rich network applications.

　　Key words：Telemetry terminal; wired embedded Ethernet; network structure; TCP/IP;W5500 chip;drive library