虚拟示波器的软件设计与应用  

Software's design and application of virtual oscilloscope

作　　者：冯静亚[1] 于强[1] 吕朝晖[1] 罗福山[1] 

机构地区：[1]中国科学院空间科学与应用研究中心

出　　处：《计算机工程与设计》2007年第1期211-213,共3页Computer Engineering and Design

摘　　要：给出了一个虚拟示波器的设计方案,并运用了多线程运行的软件结构。为了解决数据接收过程中的帧错位问题,采用一种精简的滑动窗口技术。介绍了统计正弦波形周期和有效值的方法。研究了该项设计在空间电场测量实验中的应用,并讨论了提高信号处理精度的途径。最后指出采样频率和通讯速率决定了可处理信号的最高频率,采样位数则决定了统计分析的精度。A design of virtual oscilloscope and a software structure ofmultithread are presented. To resolve problem of disorder during receiving frames, a simplified sliding windows technique is used. A method of calculating Time and effective value of sine wave is introduced. The application in the experiment of measurement of spatial electric field is researched, and methods of improving accuracy of signal processing are discussed. Finally it is pointed out that sampling frequency and speed of communication restrict the highest processing frequency, and resolution of A/D converter restricts procession of statistics.

关 键 词：虚拟示波器 多线程 滑动窗口 采样频率 统计分析 

分 类 号：TP311.52[自动化与计算机技术—计算机软件与理论]