单片机AT89C2051在超声波测距系统中的应用  

One ultrasonic distance measurement device based on single chip processor AT89C2051

作　　者：樊高妮[1] 何永强[2] 

机构地区：[1]湖南文理学院人事处,湖南常德415000 [2]中南大学机电工程学院,湖南长沙410083

出　　处：《湖南文理学院学报（自然科学版）》2006年第1期67-70,共4页Journal of Hunan University of Arts and Science(Science and Technology)

摘　　要：介绍了一种基于单片机AT89C2051的超声波测距系统,重点阐述该系统的硬件电路设计和软件设计,并利用温度检测电路有效消除了环境温度变化对传播速度的影响;在数据处理方面,利用最小二乘法得出实际值与测量值之间的补偿公式,从而使系统的测量误差进一步减小;在盲区消隐方面,通过预置触发器,并在软件上采用延迟接收技术,有效消除了串绕信号,进一步提高了检测的精度及灵敏度.This paper introduces one ultrasonic distance measurement device based on single chip processor AT89C2051 and mainly describes its hardware circuit and software design. This device solves the temperature offset problem in effect with temperature sensor LM92. Making systematic measuring error further reduced and interference signals solved effectively in data processing and blind area-hiding with presetting the D trigger and delaying receiving technology. Thus improving the measuring precision and sensitivity further.

关 键 词：超声波 测距 单片机 温度传感器 

分 类 号：TP368.2[自动化与计算机技术—计算机系统结构] TP39[自动化与计算机技术—计算机科学与技术]