超声波无线测距仪.docVIP

PAGE 50 东莞理工学院城市学院 本 科 毕 业 论 文 毕业设计题目： 超声波无线测距仪 PAGE I 摘要 随着我国现代社会经济的科技发展，超声波测距的应用越来越广泛，如汽车的倒车雷达、机器人自动避障以及工业中的液位高度、井深、管道、长度等，因此研究超声波测距有很重要的现实意义。近年来，随着无线通信技术的发展，遥测及遥控技术不断深入人们的生活与生产当中，因此具有无限数据传输功能的测距系统是其发展方向。 本文通过nRF24L01无线传输模块将采集端的距离数据实时发送给主机，实现远距离的遥测。本系统分为从机检测部分和主机接收显示报警部分。下位机主要负责超声波的数据测量和处理，通过nRF24L01无线模块发送给主机。上位机负责接收超声波的检测的距离在LCD液晶上显示，并可以通过三个按键设置报警距离的参数设置。当测量距离小于设置距离时，蜂鸣器和发光二极管发出声光报警。 关键字：nRF24L01、STC89C52、无线测距 ABSTRACT As the development of science and technology of modern social economy in our country, the application of ultrasonic distance measurement is more and more widely, such as car reversing radar, automatic robot obstacle avoidance and the liquid level height, depth, industrial pipe, length, etc, so the ultrasonic ranging has the important practical significance.In recent years, with the development of wireless communication technology, remote sensing and remote control technology of deepening peoples life and production, so it is of infinite data transmission function ranging system is the developing direction. In this paper, through the wireless transmission module nRF24L01 will collect the real-time data sent to the host, realizing remote telemetry.This system is divided into the machine testing part and host receiving display alarm.From the machine is mainly responsible for ultrasonic measurement and data processing, through the wireless module nRF24L01 sent to the host.The host is responsible for receiving the ultrasonic detection distance is displayed on the LCD, and can set alarm distance through three key parameters Settings.When measuring distance is less than the set range, send out sound and light alarm buzzer and light-emitting diodes. Key words: NRF24L01、STC89C52、wireless range 目录 TOC \h \z \t 样式1,1,样式22,3 摘要 I ABSTRACT II 目录 III 1.绪论 1 1.1 课题的背景与意义 1 1.2 国内外研究现状 2 2.系统方案设计与分析 3 2.1总体方案设计 3 2.2系统设计的主要内容 4 3.主控芯片及功能模块的介绍 5 3.1单片机最小系统 5 3.2超声波测距模块 9 3.3无线收发模块介绍 13 3.4 LCD1602显