摘要
Abstract
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 .关键词
电缆路径检测仪器/AD637/AVR单片机/D/AKey words
Cable Tracer Detector AD637/AVR Single Chip Microcomputer/D/A分类
信息技术与安全科学
