Infrastrukturmassnahmen zur Entwicklung von systemfaehigen Mikroperipherik-Komponenten und Feldgeraeten. Teilprojekt 5: Diagnosesystem Abschlussbericht

A hybrid diagnostic system that identifies and analyses failures in fieldbus-networks was designed and as a prototype for PROFIBUS realized. The developed concepts are good for diagnostical objects, that differ slightly. The diagnostic system uses association based knowledge as well as modelbased knowledge. The first part extended standard technology for the given task. Therefore knowledge bases were automatically derivated with a tool. Rules were created when the system identifies an incomplete knowledge base. The second part of the system follows the events on the bus with the aid of state machines. There are a lot of reasons for using state machines for diagnosis. One of the reasons is the possibility to build very fast diagnostical algorithm. The special feature is to generate the used models automatically by the diagnostical procedure, only by listening. Experiences with the prototype are showing the good adaptability of the system and the high quality of failure recognition. (orig.)SIGLEAvailable from TIB Hannover: F94B1585 / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekBundesministerium fuer Forschung und Technologie (BMFT), Bonn (Germany)DEGerman