摘要
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。
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.
出处
《惠州学院学报》
2012年第3期69-73,共5页
Journal of Huizhou University
基金
惠州学院教研教改项目(JGD09007)
