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Virtual instrument is to use mainstream computer technology, combined with innovative and flexible software and modular , efficient hardware technology to the creation of a powerful computer-based instruments. In this paper, virtual instruments and traditional instruments contrast virtual instrument technology, and briefly describes the Lab Windows / CVI language. Spent fuel assemblies cleaning system is an important part of fast reactors , it not only ensures fast reactor normal safe operation , and to ensure the correctness of the data fast reactor experiment . This paper describes the spent fuel assemblies cleaning system, cleaning system through workflow and describe characteristics , combined with the virtual instrument technology , the formation of the spent fuel assemblies based on modular cleaning system monitoring system. Spent fuel assemblies cleaning system monitoring system uses Advantech's ADAM-5000 series products as a data acquisition and control , with the Lab Windows / CVI software development . This article first describes the system used by the module performance , parameters, analysis of spent fuel assembly cleaning system monitoring system detailed design , focusing on a moment spent fuel assemblies cleaning system monitoring system functions and software implementation. Spent fuel assemblies cleaning system monitoring system using virtual instrument technology , to achieve the full control of component cleaning operations , the realization of spent fuel assemblies cleaning system cleaning process real-time display , the realization of the cleaning system is running a real-time analog data acquisition, storing and monitoring; implements the management of the system users ; achieve a variety of data processing , such as temperature , pressure, flow , radiological and switch condition ; generating a temperature trend .
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