超声波视力保护仪.doc

超声波视力保护仪
【摘要】
【关键词】:AT89C51,LCD1602液晶显示器,超声波传感器,蜂鸣器,
ABSTRACT
In recent years, with the rapid development of science and technology, ultrasonic sensors, whether in life or in industry plays a very important role in the progress of human society plays a key role. And as the field of industrial control requirements increase, the performance and function of single chip is constantly increasing, from 8 to 32 now, the initial development of the lighting control system based on 51 single chip puter has e a reality, which greatly promoted the CPU and the ultrasonic sensor in living the popularization and application of neutralization in industry. Taking "51 single-chip design based on" classroom lighting control system as the research object, describes the ultrasonic sensor and AT89C51 SCM origin development and principle, hardware structure and software design, and emphatically introduces the "ultrasonic eyesight protecting instrument" based on 51 single chip puter is how to design and realization.
【KEY WORD】: AT89C51,LCD1602,Ultrasonic Sensor,Buzzer,
目录
一、引言
.................................................................................................................................... 1
(一)、课题的背景........................................................................................................ 1
(二) 、设计内容.......................................................................................................... 1
(三)、设计意义............................................................................................................ 1
二、系统总体方案及硬件设计.............................................................................................. 2
(一) 、方案选择.......................................................................................................... 2
(二)、最终方案简介.................................................................................................... 2
三、系统硬件设计...............................................................