Design Of Remote Control System Based On Ethernet

The increasingly mature network techniques and widespread applications of embedded system provide a new direction for embedded system network accessing for the purpose of remote control. This thesis design a system of remote control based on Ethernet and embedded system. It fulfills real-time display for monitoring data of the remote system.The thesis makes an introduction of the research status of monitoring system and makes an analysis of the general build model of monitoring system. Formulate an overall design scheme, in which STM32F103 VE is used for the primary controller, ENC28J60 is used as Ethernet controller to fulfill the building of the hardware platform. The widely used Lw IP network protocol stack in embedded system is applied in communication design. Protocol Stack transplantation is achieved through the analysis of its principle and process, etc. The design of system web interface is completed by the Hyper Text Transfer Protocol(HTTP) message type and Hypertext Markup Language(HTML) format. Through analyze the Web server-related technologies – SSI and CGI technologies, the thesis makes a research on how to realize dynamic interaction function, provides the solution of using CGI process program to deal with the request of browser and fulfills the dynamic web function. To solve the IP address conflicts in network caused by the setup of fixed IP, the thesis introduces Dynamic Host Configuration Protocol(DHCP), and achieves the function of automatically obtaining IP address with the system connected to network, which improves the utilization rate of IP address and ensures the stable operation of the system.Multiple tests prove that the performance of the system is stable. It fulfills the real-time control of the equipment and real-time updating of the data. The system meets the development requirement of equipment network accessing and shows great application prospects in industrial control, etc.