基于单片机的视力保护仪的设计与实现

Design and Implementation of Eyesight Protector Based on Single Chip Microcomputer

据统计,中国有6亿近视患者,青少年近视率居世界首位。初中、高中学生近视率已超过70%,并逐年上升,小学生近视率也接近40%。近视的原因很多,主要是眼睛使用时间长、眼睛姿势不正确、过度使用智能设备等。如何降低青少年近视的发生率已成为一个亟待解决的问题。针对看书时存在的不良习惯,本设计采用STC89C51单片机作为核心控制芯片,利用超声波测距传感器进行测距,利用LCD液晶屏及蜂鸣器进行信息显示、报警提醒。详细介绍了系统总体结构、硬件电路设计、软件程序设计并通过仿真与实物实现预期效果。

According to statistics,there are 600 million myopia patients in China,and the rate of juvenile myopia ranks first in the world.The myopia rate of junior and senior high school students has exceeded 70%and increases year by year,and the myopia rate of primary school students is also close to 40%.There are many reasons for myopia,mainly long eye use time,incorrect eye posture,excessive use of intelligent devices and so on.How to reduce the incidence of juvenile myopia has become an urgent problem to be solved.In view of the bad habits existing in reading,this design uses STC89C51 single chip microcomputer as the core control chip,uses ultrasonic ranging sensor for measuring distance,and uses LCD and buzzer for information display and alarm reminder.This pa-per introduces the overall structure,hardware circuit design and software program design of the system in detail,and realizes the ex-pected effect through simulation and physical object.