测控设备web网络服务器化研究

Research web server monitoring and control equipment

为实现利用Internet自带的客户端浏览器对现场设备进行远程监控的目的,设计并实施了新型web网络服务器化远程测控系统。系统中测控设备内嵌嵌入式Web服务器,既能自身作为测控终端直接采集数据,又能通过CAN总线与其他测控器进行组网,实现类似网关的功能。硬件设计主要包括:嵌入式web服务器模块、测控器模块以及其接口模块设计与实施。软件设计主要选用Linux操作系统和嵌入式Web服务器Boa实现CGI技术,设计添加CAN控制器驱动程序后完成IE浏览器与嵌入式web服务器以及测控器三者之间的通信。利用该系统进行温度测试,实验成功并能满足实时性,充分表明利用Internet浏览器、嵌入式Web服务器组建并控制CAN网络的新型远程测控系统的先进性与可行性。

In order to monitoring the field devices by the Internet browser, designed and achieved the new web server long- distance observe and control system. In the system, the field device can be used as a control node directly collect data, also can be extend gateway function compatible with the CAN bus. The hardware includes the embedded web server module, the monitoring terminal module and the interfaces module of them. The software used the Linux operating system for OS and BOA for the embedded web server to achieve the CGI technology. After extend CAN controller, the communication between the IE browser, the field device embedded web server and the monitoring terminal can be achieved. Testing temperature measurement by this system, it is successful and can meet the real-time monitoring requirements. The research can show the advance and the feasibility of the new long-distance observe and control system using the Internet browser, web server and the CAN bus.