The middleware services for industrial computer systems

The "Diaspect", the middleware package we have developed, provides basic industrial computing services common to various ICS applications. The Diaspect family includes a real-time data service that supports the programming of reliable hard real-time data processing, a man-machine service that realizes advanced man-machine functions for sophisticated plant operation, a distributed database middleware that manages the consistency of the distributed database and provides user specific views. We extracted these middleware services based on the analysis of many ICS applications. The author describes the concepts behind the development of the Diaspect, and outlines functions of principal middlewares.