基于ATMEGA8的低成本超声波测距仪设计

Design of the Ultrasonic Distance Measurement System with Low Cost Based on ATMEGA8

介绍了一种由ATMEGA8单片机控制的成本低、体积小的智能超声波测距仪;首先介绍了超声波的测距原理,重点阐述了整个超声波测距仪的硬件电路以及软件的实现方法。考虑到温度对超声波波速的影响,增加了温度补偿电路来消除温度误差;通过对该系统进行的实验,验证了方法的正确性和有效性,并能够达到较高的测量精度。。

This paper introduces an intelligent ultrasonic meter with small volume and low cost which was controlled by ATMEGA8 SCM.First described the principium of the ultrasonic distance measurement,then mainly described its hardware circuit and software design.This design solved the temperature offset problem effect with DS18B20.Then gave the project software and hardware methods.The test results demonstrate the validity of all the methods proposed in this dissertation,and the test show that this intelligent ultrasonic meter has high accuracy.