Virtual Digital Spectrum Analyzer

With the development of electronic science and technology, there is much more focus on it, and its development has huge relationship with the measurement technology; Spectrum analyzer is an important part of the measurement technology. And the different spectrum analyzers which test the signals in the different circumstances have the significant meaning.Our spectrum analyzer is to measure the signals of noise, audio, mechanism and so on. In this paper, our designed virtual spectrum is based on the teaching and gives the students the profundity impression. Based on this purpose,We design this solo channel of spectrum analyzer.My virtual spectrum analyzer designed on the SJ8002_B platform, previous on the data acquisition module in the platform, and as the software tools of LabVIEW to design it .At first, the paper instroduces the whole things of virtual spectrum analyzer, the meaning of development and research, then discussed the details of its hardware and software designing.On the hardware part, data acquisition-in this part I changed the 8 bits ADC to 12 bits one and rejusted its peripheral circuits.Second, communication module, which communicated the computer with platform, and use the USB-EPP model.Third, Store and control module, which controls the data acquisition module and storing the data by FPGA.On the software part, we designed it on module, and descript the methods of the programming and flow chart in details, then I designed the virtual spectrum analyzer's control panel,data acquisition module and FFT module by LabVIEW.and finally make it achieve functional.