毕业设计（论文）-超声波测距仪设计.docVIP

本科毕业设计 （2011届） 题 目 超声波测距仪设计 学 院 电子信息学院 专 业 电子信息工程 班 级 学 号 学生姓名 指导教师 完成日期 诚 信 承 诺 我谨在此承诺：本人所写的毕业论文《XXXXXXXX》均系本人独立完成，没有抄袭行为，凡涉及其他作者的观点和材料，均作了注释，若有不实，后果由本人承担。 承诺人（签名）： 年 月 日 摘 要 本设计主要利用超声波传输中距离与时间的关系，采用AT89单片机进行控制及数据处理，设计出了能测量两点间距离的超声波测距仪。该测距仪主要由单片机控制电路、超声波发射器电路、超声波接收器电路及显示电路构成。利用所设计出的超声波测距仪，对不同距离进行了测试，并进行了的误差分析。 关键词：；AT89； ABSTRACT This ultrasonic ranging system designer mainly controlled by Micro Control Unit, MCU controls the timer, the software produces about 40KHZ square wave signal triggered emission sensors, to control the transmit and receive ultrasound. The AT89s52 MCU to control the data process and design to accurately measure the distance between two points in the ultrasonic range finder. The Transmitter circuit drives the output from the MCU to send ultrasound directly. Receiver circuit consists of transistor amplification, the shaping circuit. The circuit is simple, less debugging. The range finder controller system is mainly included by the microcontroller, ultrasonic transmitter circuit, ultrasonic receiver circuit and display circuit. Using the design of the ultrasonic range finder, for different distances were tested, and conducted the error analysis. The system is reasonably simple circuit design, stable, good performance, test speed, calculation is simple and easy to do real-time control, and measurement error terms to achieve a simple and requirements of practical industry. 朗读 显示对应的拉丁字符的拼音 ? 字典 Key words：ltrasonic distance；AT89s52；ltrasonic sensors；timer；square wave； 录 1 引言 -------------------------------------------------------------------------------------1 2 概述 ---------------------------------------------------------------------------------2 2.1超声波测距系统概述 ---------------------------------------------------------------2 2.2 设计方案思路 ------------------------------------------------------------------3 2.3 研发方向和技术关键 -----------------