虚拟频谱分析仪的设计

Design of the Virtual spectrum analys

本设计通过虚拟仪器LabWindows/CVI系统实现了虚拟频谱分析仪的设计。所设计的可视化虚拟频谱分析仪,可以通过AD转换实现对模拟信号的数据采集,同时应用FFT算法对信号进行离散傅里叶变换获得信号的频谱,以图形显示信号的幅度谱,相位谱,功能谱。实验证明,本文设计的虚拟频谱仪所得结果正确,图形表达清晰,起到了较好的故障诊断分析的帮助作用,表明了本设计系统的工程实用性。

A virtual spectrum analyzer was designed via the software platform of LabWindows/CVI. The visual design of the virtual spectrum analyzer can be achieved analog signal data acquisition through the AD conversion at the same time application of the FFT algorithm signals discrete Fourier transform to obtain the signal spectrum, the graphical display of signal amplitude spectrum , phase spectrum and the spectral features. In this paper, the design of the virtual spectrum analyzer results are correct, clear graphics expression, and played a good analysis to help diagnose faults, shows the design of the system engineering practicality.