职业学校用低频虚拟示波器的设计

摘要

It introduces a kind of low frequency virtual oscilloscope based on AT89S52 single chip microcomputer and LabVIEW .The data acquisition card collectes data to computer by USB port, then the computer processes results on the screen according to the virtual panel settings, calling the dynamic link library to the corresponding analysis, achieving similar functionality to real oscilloscope. The low frequency virtual oscilloscope is easy to operate with strong practicability, can be applied to teaching and experiment in vocational schools.%介绍了一种基于AT89S52单片机和 LabVIEW实现的低频虚拟示波器。将数据采集卡所采集的数据通过USB口送到计算机，然后计算机根据虚拟面板的设置，通过调用动态链接库对数据进行相应的分析、处理，并在屏幕上显示出处理结果，实现与真实示波器相类似的功能。该低频虚拟示波器软件面板设计形象，易于操作，实用性强，可应用于职业学校的教学、实验。