The Research Of Realization Of Temporal Knowledge Inference On Blackboard Framework

There are many practical problems that should be explored in the applications of Expert System in Real-Time environments. The paper begins with analyzing recent developments and the major issues in the relevant topics, and summaries the problems and requirements dealing with the design of temporal knowledge inference that are researched on the basis of the concrete application. The background of the paper is Status Diagnosis System in Blast Furnaces. The dissertation includes: extended blackboard model, design and realization of inference.The extended blackboard model adds control blackboard on the traditional blackboard model, based on analyzing the characteristics of past, current and future data, gives the framework of temporal blackboard, and discusses the uncertain points of the interval and the temporal consistency or rules during inferring.The design and realization, in order to meet the real-time constraint, gives a control architecture in the control blackboard, makes different grainy tasks using different parameterized task channels. In addition, the author gives the UML realization chart of Status Diagnosis System.