Design And Implementation Of The Multi-interface Embedded Web Server

With the evolution of embedded system and the popularization of Internet, it is aninevitable trend that the embedded technology and the Internet should be combinedtogether. At present, the traditional industrial control equipment can not be directlyconnected to the Internet. How to make these equipments connect to the Internet withlow-cost is an important issue.The thesis first describes two problems when the embedded system is accessed to theInternet: the technical problems and the cost ones. The Multi-Interface embedded webserver based on 8-bit MCU was advanced to solve the problems after the feasibility isanalyzed. Then, we analyze the constitution, function and the key technology of the webserver system. After that, the hybrid structure is chosen to access to the Internet, so that theweb server can be connected either to Internet through Ethernet or to PSTN with the PPPprotocol. The DS80C400 is employed to complete the hardware design andrealization. The application software is designed based on the Java software platform.Finally, as the validation test, the system is applied to the PLC of Siemens for dataacquisition. The application approved that the system is reliable and stable so that itachieves the design requirements and has good practical value.The result of the research provides a viable option for industrial control equipmentaccessed to Internet with low-cost. So it will have a broad prospect.