基于虚拟仪器技术的示波器研究

The Study of Oscilloscope Based on Virtual Instrument Technology

基于LabVIEW虚拟仪器开发平台,将虚拟仪器技术与示波器原理相结合,开发了用户操作界面人性化程度高、仿真信号种类变化多、测量结果准确性好的虚拟示波器。不仅实现了仿真信号相位、峰值、频率、直流偏移量和占空比多种参数的测量,也可以将波形以图片和数据两种方式进行保存。另外,研究了仿真信号的物理参数对信号波形的影响,便于对相位和频率等抽象物理量拥有更深更形象的理解。这种智能化虚拟示波器,实现了数据分析、处理和显示自动化、简单化,极大地提高了实验效率。

The virtual instrument technology and oscilloscope principle are combined to develop a virtual oscilloscope with high degree of human operator interface,and accurate simulation results based on LabVIEW virtual instrument development platform.It not only realizes the measurement of phase,peak,frequency,DC offset and duty cycle of simulation signal,but also can save the waveform in two ways of the picture and data.This kind of virtual oscilloscope can analysis and processing waveform data simply and automatically,which improves the efficiency of the experiment greatly.