信息工程通信外文翻譯外文文獻(xiàn)英文文獻(xiàn)基于虛擬儀器的信號發(fā)生器的設(shè)計與實現(xiàn)(更新版)
【正文】 s on puter can be used as teaching other machines , greatly improving Equipment utilization, reducing the cost of laboratory construction. The current should be addressed is how to make virtual instruments and existing instruments together, and tap the potential of existing equipment, to phase out and replace the traditional instrumentation . In short, the virtual instrument has a broad space for development, and ultimately to replace the large number of traditional instruments into the mainstream of the field instrumentation products, as measurement, analysis, control, automation instrument core. Signal Generator Overview Signal generator (signal generator), also known as signal source or oscillator, is a kind of equipment to provide a variety of frequency, waveform, and output level signal, the signal source used for testing or excitation. It has been widely used in the science and technology and production practice. With the development of modern electronics, puters and signal processing technology, Advancing digital technology in the application of electronic measuring instruments, so that the original analog signal processing gradually being replaced by digital signal processing to expand the instrument signal processing Capacity, improved signal measurement accuracy , precision and speed of change to overe the many shortings of analog signal processing, digital signal generators were developed together. The functions of traditional signal generators are carried out solely on hardware, and at the same time the functions of traditional signal generators are singleness and costly for purchasing and maintaining, What is more important is that the functions of traditional signal generators can not be altered once they are fixed. Users must get new ones so long as they want new functions. Thus, the defects of traditional signal generators are obvious. Virtual instrument is the instrument technology, puter technology, bus technology and software technology closer together, the use of powerful digital puter processing power to achieve most of the functions the instrument, breaking the traditional instruments of the framework, the formation of a new instrument model
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