管长声波测量法的开发与研究

Exploitation and Research of Pipe's Sound-wave Length Measurement Method

本文介绍了一种测量管长的方法 ,其测量精度可达 0 .1～ 0 .2‰。该系统基于速度乘以时间等于距离的原理 ,运用声控电路和单片机 ,具有测量、校准、显示、打印等功能。

This article introduces a method of measuring the pipe's length.It can improve measure accuracy high as 0.1~0.2‰.This system is based on the principle that speed multiple time equals length.With sound-control circuit and a single chip,the equipment can measure,check,display,print etc.\;