摘要
介绍了声音信号在电缆路径检测仪中的作用。分析了以前实现动态频率输入、固定频率信号输出技术的方法,并指出了存在的问题,提出了采用AC_DC转换芯AD637、AVR单片机和D/A的方法,实现宽范围动态信号输入,幅度随输入信号变化的固定频率信号输出,并在实际中得到了很好的应用。
Firstly, introducing the role of sound in cable tracer detector, then the authors analyses the former method that dynamic input, fixed frequency output and point out the problem. In the end, a method that use of AC_DC conversion chip, AD637, AVR single chip microcomputer and D/A is proposed and presents a wide signal input, fixed frequency sig-nal output with the rate of change in the input signal.
出处
《软件导刊》
2013年第8期43-45,共3页
Software Guide
