Design on the Fault Diagnostic System Based on Virtual Instrument Technique

Virtual instrument (VI) is one of the most prevalent technologies in the domain of testing, control and fault diagnosis systems, etc. In order to update entirely the means of the equipment testing for shipboard equipment, the fault diagnostic system for shipboard equipment is developed, based on VI technology, Delphi and database. The performance and constitutes of VI are introduced briefly. The modularization and universalization are proposed in its database-based design concept, realizing the design of software and hardware. The ODBC technique is applied for the interconnection of databases to ensure the generality and flexibility of the system. The aim of this design is to resolve the problems existing in the usage of testing equipments. The system mode the best of VI platform and grey diagnosis method, broke through conventional check diagnosis patterns for warships equipment, solved the problems of state prediction and trouble-mode recognition of warships equipment. It has been proved from the application that the system has merits both the testing speed and high accuracy.