The Research And Implementation Of Data Access Middleware In Distributed Compute Control Systems

There are currently many kinds of control systems in the industrialprocess domains, such as PLC, DCS, and FCS, which resulting in arequirement to integrate these systems to promote productionefficiency .As a fruitful resolution to satisfy the need of controlsystems integration, OPC technology has been proposed.From the aspect of middleware , with the insight of OPC technologyand the consideration of the development direction of industrial controlsystems to distributed systems, a reasonable data access middlewareresolution is proposed to meet the requirement of future distributecomputer control systems. The resolution takes the advantage of designpatterns and object-oriented modeling technology, has built up aflexible, robust, and extendable architecture of data access middleware,which provides transparent data access for distributed applicationusers.