labview-basedvirtualfunctionsignalgenerator基于labview的虛擬函數(shù)信號(hào)發(fā)生器的設(shè)計(jì)-外文翻譯-展示頁
2024-11-29 16:08本頁面
【正文】 onents is intended to increase the aesthetics of the instrument, and as far as possible with real instruments consistent user interface Virtual Function Signal Generator hardware structure This virtual function signal generator hardware input and output data acquisition card and a certain 浙江農(nóng)林大學(xué)本科生畢業(yè)設(shè)計(jì)（論文） 3 configuration requirements of the PC, the data input and output depend on input data acquisition card, the definition of output achieved. This design uses the PCI1200 data acquisition card is a good costeffective products, with the D / A conversion functions, can generate the digital signals into analog signals and digitalanalog converter and high precision, but also has filtering capabilities, which Smooth the output waveform. It supports the unipolar and bipolar analog signal input, the signal input ranges of 5 ~ +5 V and 0 ~ 10V. Provide 16 singleended / 8 differential analog input channels, 2 independent of the DA output channels, 24line TTL digital I / O, 3 16bit timer counters and other features. Some of the hardware interface for data input or output channel settings. Some of the hardware interface block diagram shown in Figure 2: Figure 2 浙江農(nóng)林大學(xué)本科生畢業(yè)設(shè)計(jì)（論文） 4 3 Virtual Function Signal Generator Design and Implementation Some use professional LabVIEW6i software virtual instrument graphical development tools. Virtual function signal generator output waveform mainly in software production and the output signal frequency display. Changes in the frequency of the output waveform is a concrete realization of data acquisition waveform data written to the buffer among the buffers by setting the update frequency (to change the internal clock frequency) to achieve the output data frequency. The process is mainly in the use of Labview data acquisition submodule of the AO START function modules. Function from the implementation point of view, this design features a virtual function signal generator structure includes two modules: Module waveform generator (FG module) and frequency change control unit (DISPLAY) module. Waveform generator module and call FGEN module. FGEN module for the digital waveform generator module. Digital waveform generator module Waveform generated virtual function signal generator module is the core of the software.
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