Research of the Embedded Dynamic Web Monitoring System Based on EPA Protocol and ARM Linux

摘要

Combining with the characteristic of web technology and field working requirement, Embedded Web Server (EWS) integrates the information acquisition and diffusion into the field embedded measurement and control equipments by the standard interface and communication protocol. And the EWS in the equipments can provide the browser-based operation and control interface through internet. Ethernet for Plant Automation (EPA) is the first standard in the industrial automation field of china, which has been accepted and published by international standard organization and has been included in Type 14 of the fourth IEC61158 Fieldbus. Taking the high-adaptability and high-reliability of embedded system for the special work requirements in industrial field, a dynamic web monitoring system based on EPA protocol under embedded ARM Linux operating system has been designed and developed in this paper, which using common gateway interface(CGI) and script service program XSP to realize the information acquisition and real-time monitoring of EPA devices. It can meet the remote monitoring requirements of the enterprise production process and improve its productive efficiency and management level.