毕业设计说明书 基于 51 单片机的视力保护仪设计 办学单位 : 应天职业技术学院 班 级 : 电子 121 班 学 生 : 彭小滠 指导老师 : 葛东旭 提交日期 : 2015 年 3 月 20 日摘 要 摘要:本论文阐述了一种基于单片机的智能视力保护器的设计。该设计以 89C52 为核心,可实现距离监测、设置报警距离等功能,通过 LCD 显示各种参数信息,并能在线修改各个参数初值来适应不同使用者的需求。测距是利用超声波传感器来实现。软件利用 C语言进行编程,并采纳模块化的设计思路。该系统具有简单有用的特征,对青少年视力保护具有很好的效果。关键词:STC89C52 ; 超声波:视力保护Abstract:This paper expounds a design of intelligent vision protector based on single chip microcomputer. The system with 89C52 as the core uses LCD to display various parameter information, and changes the parameter initial value online to adapt to the needs of different users. Distance measurement is realized by ultrasonic sensors, light intensity detection is achieved by photosensitive element, timer function is realized by 89C52’s timer. Software design uses C language to programe, with modular thought. The system has the characteristics of simple and practical, has the very good effect to teenagers vision protection. Keywords: STC89C52; Ultrasonic; Vision protection目录第一章 绪论....................................................................................................................................................................31.1 选题背景................................................................................................................................................................31.2 选题的意义............................................................................................................................................................31.3 设计的任务.....................................................................................................................