摘要
本文结合生物电信号的采集,讨论了如何在Windows下实现数字信号的定时采集,首先分析了Windows计时器消息用于信号采集的不足;最高采样频率低、采样间隔不均匀、易发生数据丢失。然后给出了解决方法:在Windows中巧妙使用与之不兼容的函数delay()。从而实现了Microsoft Windows下数据的定时采集。
In this paper, we discuss how to realize the periodic acquisition of digital signal (eg. bioelctrical singal) under the windows environment. First,the shortcomings of the windows timer message using for signal acqusition are given:the lowness of the most high sample frequency, the unevenness of the sample interval and easily ocurrance of data loss. Then the solution is given:using the windows—uncompatible fuction delay O to realize the periodic data acqusition under microsoft windows.
出处
《计算机应用》
CSCD
1996年第2期38-39,共2页
journal of Computer Applications
关键词
WINDOWS
应用程序
数据采集
计时器
Windows application
Graphic user interface
Data acqusition
Sampling theorem
Bioelctrical signal
