摘要
基于计算机声卡的虚拟仪器成本低、通用性强,在对采样频率要求不高的情况下,可以用声卡取代数据采集卡进行采样和输出。利用虚拟仪器开发工具软件LabVIEW及其数字声音记录节点,研制出基于声卡的虚拟双踪数字存储示波器,其功能和界面都与真实示波器相同。重点阐述了数据采集、触发控制、显示控制几个主模块的设计方法。
The vitrual instrument based on PC sound card has the virtues of low cost and powerful generality, and the sound card can take the place of the plug-in data-acquisition board on low-frequency condition. In this article, the virtual double-traced storage oscilloscope based on sound card, whose function and interface were designed according to the actual oscilloscope, was developed using virtual instrument software LabVIEW and its digital sound record nodes. The designs for several main modules such as data acquisition, triggering control and display control were chiefly expounded.
出处
《计算机应用与软件》
CSCD
北大核心
2007年第3期61-64,共4页
Computer Applications and Software
基金
全国教育科学十五规划项目(ECB030477)。
