Design Of Embedded 3G Web Server Based On DDNS

With the booming of the economy and the development of technology,people's quality of life is more and more high and The Internet of things technology(IOT)is born at the right moment to provide convenience for people to live and work,which is to realize the future society full of intelligence and automation.Such as the mobile phone and vehicle system which can be seen in life everywhere,monitoring equipment in industry controlling,household electrical appliance in family are all parts of the Internet of things.EWS(Embedded Web Server) will be widely used in the the construction of the Internet of things.However,with the development of the Internet of things,the communication technology requirements are also getting higher and higher.For example,some special applications,the monitoring and maintenance of the power grid of remote area,the control and operation of agricultural automation equipment,which have some problems if choosing Ethernet communication technology as communication mode.So, the diversification of means of communication will also be one feature of the future Internet of things, otherwise which will not be able to adapt to various environments.In this paper, the application of wireless communication technology will solve those problems,and According to the application filed, the third generation cellular mobile communication technology-3G is choosed as the means of communication.In the application of 3G communication technology,Dynamic DNS Technology will be used to slove the problem of accesing the server with float IP.The main contents of this dissertation are shown as follows:1) Completed the overall design of the system's hardware platform and the function design of each module.Design each interface circuit for the hardware unit of system, expounds some interface circuit, such as the USB, Flash, SDRAM, and so on.2)Make in-depth analysis of the transplantion of embedded Linux system, detailed study of how to change the parameters, configuration Settings, and transplant process in the embedded real-time operating system in embedded Linux on the S3C2440 hardware platform.3)The design of the communication module.According to the application characteristics of 3G dial-up, loading the driver of 3G wireless network card to the platform.Then configuring and compiling the support of Embedded linux system for PPP dial-up protocol,writing the dial-up script.Hua sheng ke DDNS is compiled and transplanted to the platform,which will use the application of the free domain to map dynamic IP of the platform and achieve dynamic DNS.4)The establishment of embedded web server.GoAhead web server is configured and transplanted to the platform,Writing an application to achieve led complex controlling.