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In order to resolve the hard casting status identification problem of steel water continuous casting slag detection system and reduce its control delay,a kind of C language integrated production system (CLIPS)based continuous casting slag detection expert system was brought forward.The continuous casting production mechanism composition and its operating characteristic were analyzed,the muiti-channel real-time vibration signal collection system oriented to slag detection was established,and it could supply strong real-time support for the expert system.According to factual investigation outcome of continuous casting field,system knowledge base and fact base were realized by CLIPS resource frame.Using the application program interface (API) of CLIPS,the system inference engine was set up with relative transcendent production rule and detection algorithms in Linux environment.Combined Protégé technology,system developing period was decreased,and the interactivity performance was strengthened during the course of system development.Based on modularization pdnciple.the reduced and configurable light graphic components library was designed and realized by Qt/Embedded,a mature graphic user interface (GUI) tool library,and it could supply Chinese operating environment.Industry field experiments prove that this system has good cross-platform ability,can effectively judge the typical slag status,and can supply corresponding operating advices and its confidence degree.