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PAGE 1
中文1963字
Labview-based virtual function Signal Generator
V Marozas, R Jurkonis
1 Introduction
Since 1986, the U.S. NI (National Instrument) companies to the concept of virtual instrumentation, along with computer technology and measurement technology, virtual instrument technology has also been developed rapidly. Virtual instrument means: use of the existing PC, with a specially designed instrument hardware and proprietary software, the formation of the basic functions of both the ordinary instrument, there are usually no special equipment features of the new instrument. Compared with the traditional instruments of its features are: better measurement accuracy and repeatability; measurement speed; system set up time is short; instrument function defined by the user; scalability; technical updates and quick. Virtual instrument software as the core, the software company Youyi U.S. NI Labview virtual instrument software development platform most commonly used. Labview is a graphical programming language, mainly used to develop data acquisition, instrument control and data processing and analysis software, and powerful. Currently, the development of software in the international test, measurement and control industry, popular, measurement and control areas in the country has also been widely used. Function Generator is a scientific research and engineering design in a widely used general-purpose equipment. The following function signal generator with a virtual design and development of specific description is based on graphical programming language Labview virtual instrument programming and implementation of technology.
2 virtual function signal generator structure and composition
2.1 Virtual Function Generator front panel
This virtual function signal generator mainly consists of a PCI bus, multi-function data acquisition card and appropriate software. Them installed on a PC running Windows95/98/2000/NT the machine, shall constitute a powerful function of signal
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