WWW-browser-based monitoring system for industrial plants

In this paper, the authors describe a WWW browser-based monitoring system (WBMS) for industrial plants. The WBMS is an integrated system connected with control LANs and an intranet. The authors show a system architecture based on an organizational security policy, and show some typical system requirements. They then describe two implementation approaches using Java technology, one is a graphical user interface (GUI) development and the other is about data acquisition and management at the client site. The authors also evaluate the performance of Java remote method invocation (RMI) and verify the efficiency of the technique which they propose. They also show how the WBMS can be extended to include a GIS and a simulator.