基于A RM9的嵌入式Web服务器数据动态显示的实现

摘要

随着无线传感网络的迅猛发展，将嵌入式系统接入互联网已成为无线传感网络研究中的热点，其中通过访问嵌入式服务器网页实现采集数据的动态显示是一个技术难点。文中采用DS18B20温度传感器采集温度，在嵌入式网关搭建ARM-Linux开发平台；然后移植BOA服务器；同时利用CGI程序、Ajax技术及HTML语言，在上位机通过访问嵌入式网关，从而实现了对传感器节点采集的温度数据在网页中的动态显示。实际应用表明，该系统消耗CPU资源少，可减轻服务器负担，而且无需刷新页面更新数据，因而可减少用户实际等待的时间。%With the rapidly development of wireless sensor network, it has become a hot spot in the research of wireless sensor network to access embedded system into internet, and one of the technical dififculties is to realize the dynamic display of the collected data through accessing the Web in the embedded operating system. Using temperature sensor DS18B20 to collect the temperature data, and then ARM-Linux is constructed in the embedded gateway. BOA server is migrated while the CGI program, Ajax technique and Html language are used to realize real-time displaying the data in the Web page. The actual application shows that the system consumes less CPU resources, which can reduce the burden of the server, and need not to update the data, thus the waiting time for users in practical application is reduced.