摘要
介绍了基于USB总线的双通道虚拟数字示波器的设计方案和开发方法。首先介绍了主要由高速数据采集卡、双端口缓冲和USB2.0接口组成的硬件电路的设计,然后以C51和VC++为软件工具设计了固件程序、虚拟仪器软面板和应用程序。该示波器的最高采样率为100 MSPS,具有有效值、平均值、峰值测量和记忆功能等,还扩展了频谱分析功能。
The text introduces the design scheme and developing way of dual-channel virtual digital oscilloscope based on USB bus.First it introduces the design of hardware circuit which is mainly composed of high-speed data acquisition card,dual-port data cushion and USB2.0 interface.Then firmware program,virtual instrument software panel and application are designed with the tools of C51 and VC++.The maximum sampling frequency of this oscilloscope is 100MSPS.It has virtual value,average value,peak value measurement ...
出处
《电测与仪表》
北大核心
2008年第9期37-41,共5页
Electrical Measurement & Instrumentation
基金
黑龙江省科技攻关资助项目(GC05A513)
