Research And Design Of Remote Monitoring System Based On UClinux

With the development of information and network technology,embedded system has penetrated into all fields of industrial control,and will also be one of the development about modern control technology.This paper uses ARM Linux to achieve remote monitoring through both Web and Telnet. This paper first introduces the Design plan and the building method about this remote monitoring system.Then introduces this two implementations.One method of remote monitoring is based on Web,uses boa embedded web server and CGI dynamic web page design technique to write out the dynamic pages that adapt to remote controlling.So that remote users can monitor the equipment confition and modify its parameters through this interface. This system can hide the file path by modifying the source code of the web server boa, and this method can increase its security. In addition, traditional CGI programming with a simple printf () function to generate the HTML source code,such lengthy CGI code is not conducive to reading, and error-prone. This paper proposes a solution similar to ASP technique,save the pages that want to display as documents, and design configuration file to replace contents that want to dynamically display. The experiment results have testified that this approach can significantly reduce the volume of CGI code, and can easily modify it.The other method of remote monitoring is based on Telnet,devices can be directly connected to the Internet/Intranet through the Telnet server.This is convenient to the users to interact with remote devices that have not installed graphical interface.Using Telnet,network bandwidth occupied by small,it is suitable for users who's network environment is not perfect. In addition,this system is separated to two parts of the template and the realization,the two sides communicate through the messages.And this can easily update the system for the future.Practice has proved that this design plan is logical,can ensure remote access implement perfectly.This paper provides a good solution for embedded remote monitoring system.