基于STC89C52单片机的超声波测距仪设计

范文编号:JD1169  范文字数:9226,页数:32  附任务书，开题报告，文献综述，外文翻译，中期检查

文档设计说明书（范文）中文摘要
 该文的超声波测距仪设计适用于中长距离测量，具有市场应用价值。该课题主要研究基于STC89C52单片机的超声波测距仪是利用超声波在空气中的传播速度为已知，测量声波在发射后遇到障碍物反射回来的时间，根据发射和接收的时间差计算出发射点到障碍物的实际距离。该文介绍了超声波测距仪的软硬件设计以及相关的报警功能。超声波测距仪主要有硬件和软件两个部分组成。硬件部分有单片机系统及显示电路、超声波发射电路和超声波检测接收电路、鸣响电路、电源电路组成；软件部分有主程序、超声波发生子程序、超声波接收子程序及显示子程序等部分组成。

关键词  超声波  测距仪  单片机  报警

文档设计说明书（范文）外文摘要

Title           Ultrasonic  Distance  Meter                              

Abstract
This paper ultrasonic distance meter designed for use in mid range measurement, With the market application value. The topic that based on the single chip research STC89C52 ultrasonic distance meter is make use of ultrasonic wave in the air velocity as the known, Measuring sound in a reflection back after launch to meet obstacles of the time, according to transmit and receive a lag between the time it takes to calculate the actual distance engine off-time eigenvalue obstacles. This paper introduces the design of the software and hardware ultrasonic distance meter and related alarm function. Ultrasonic distance meter main hardware and software two parts. Hardware part is the SCM system and display circuit, ultrasonic launching circuit and the ultrasonic receiving circuit, ring circuit, the power supply circuit component. Software is the main part of the program, ultrasonic happen subroutines, ultrasonic receiving subroutines and display subroutines components.

Key words   ultrasonic ambulator microcontroller alarm

目  次

1  设计的要求、原理及意义 1
1.1 设计要求 1
1.2 设计原理 1
1.3 设计意义 2
2  硬件系统设计 3
2.1 原理框图 3
2.2 US-100超声波收发模块 3
2.3 单片机电路 7
2.4 蜂鸣器报警电路 8
2.5 显示电路 9
2.6 供电及程序下载电路 10
3  软件编程 12
3.1 软件编辑思想 12
4  下载与调试 14
4.1 USB转串口驱动安装 14
4.2 下载程序 14
4.3 调试 15
结  论 17
致  谢 18
参 考 文 献 19
图1  电路原理图 28
表1  元器件清单 29

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