Research And Implementation Of Embedded Web Server

With the development of embedded technology and Internet technology, a variety of embeddeddevices have penetrated into all aspects of people’s lives and work. Allowing embedded devices toaccess Internet, it can be used in areas such as industrial control, smart home, network videomonitoring system and so on, which has brought a tremendous convenience to our life. At the sametime, in areas of industrial control, real-time requirements are relatively high. In order to achievethis goal, this thesis designs server-side and client-side program to improve real-time datatransmission. So the design of Embedded Web Server is very important.The main achievement of this thesis is to establish the system of temperature and humidityacquisition based on Embedded Web Server. The design uses a processor chip named S3C2440, andon this platform it transplants Bootloader, Linux kernel, makes the root file system. Ultimately,development environment of embedded system has been established. This thesis transplants Boa,and then uses CGI technology and Sqlite database to write application. Through the preparation oftemperature and humidity sensor driver and application, the collected data can be displayed in theclient. Taking account of applications such as industrial control which requires high real-time datatransmission, this thesis uses WebSocket protocol to design program on the server side, and uses theJavascript to design program on the client. Eventually, it achieves the goal of the real-time displayof acquisition data in the client. This is the innovation of this thesis.The success of the design is to achieve the basic function of the Embedded Web Server. Andfor some specific applications, this thesis elaborates on how to improve the real-time datatransmission by using the WebSocket protocol. Through this research, it proves that it has somecertain significance for real-time applications.