基于LabVIEW的虚拟实验仪器设计

本文设计实现了一个基于LabVIEW的虚拟实验仪器，包括虚拟信号发生器、虚拟双踪数字存储示波器等。其中信号发生器能产生三角波、方波和正弦波，并叠加噪声；示波器实现双通道信号测量、频率幅度测量、信号存储及回放、触发通道控制等功能；实现对外部采集信号及虚拟信号的测量及显示。为了提高所测量信号频率的准确度，通过加上相应窗函数进行频率校正。

Design of Virtual Experimental Instrument Based on LabVIEW

This paper designs a virtual experiment testing system of analog electronic technology based on LabVIEW,including the virtual signal generator,virtual digital oscillograph.The signal generator can generate triangle wave,square wave and sine wave,and mixing noise;the dual channel oscilloscope implement of signal measurement,frequency and amplitude measurement,signal storage and playback,trigger channel control functions;implement of collect the external signal and virtual signal measurement and display.In order to improve the accuracy of measuring the frequency of the signal,we add a corresponding window function for frequency correction.