期刊论文

中文

电脑开发与应用

1003-5850

2002

15

1

2-4

10.3969/j.issn.1003-5850.2002.01.001

湖南省教育厅 2 0 0 0年高等学校科研项目 （0 0 C2 4 4 ）资助；

本校为其他机构

以 Alter CPL D FL EX10 K器件为虚似仪器核 ,在 Windows 95 /98下借助 Delphi 5 .0实现操作界面 ,对二个 5 0 m V～ 10 V、0 .2 Hz～ 13.8k Hz的正弦波、短形波等周期信号实现 4 7πf /10 7（f为待测信号频率 ）分辨率相位差自动测量和分辨率显示的设计原理与实现方案

The paper introduces the design principle and implementation method of phase difference meter,which uses Alter CPLD FLEX10K chip as the kernel of virtual electronic instrument and by means of Delphi 5.0 in Windows95/98 the interactive interface is realized.The phase difference meter can efficiently test the phase difference of two cycle signals that are sine wave and square wave whose voltage range from 50mV to 10V and frequency range from 0.2Hz to 13.8 KHz,with 4πf/10 7 definition and display defin...