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1、摘要随着现代社会的发展，中国青少年的近视率一直居高不下，成为困扰中国家庭的主要问题。随着科学技术的进步，科学家希望通过人工干预和治疗，从根本上解决近视问题。然而现代医学的发展虽然可以解决很多曾经困扰人类的疑难问题，却仍然不能从根源上预防和祛除近视。我们通过对影响视力的各种因素进行实验，发现造成青少年视力下降的最主要根源是灯光。传统护眼灯为了达到提高频率的目的，使用了高频镇流器，使得护眼灯的电磁辐射远比一般的电器高得多，是手机、电脑的数倍甚至数十倍，严重影响视力。而LED照明技术的出现，为我们提供了消
2、除仅是问题的途径。本文基于单片机控制的智能补光系统，全天候模拟出上午9、10点钟自然光照，完全杜绝频闪、辐射和眩光，有效消除传统光源中紫外线、红外线，能有效降低因光线变暗或变亮对人眼睛的伤害，可以有效减少对电能的消耗，节能环保。针对现代社会近视率居高不下的现象，提出了基于MCS-51单片机的LED智能补光系统对外界光线的自动采集和调整，以减少由于外界光线变亮变暗对人眼的伤害。实验结果表明LED灯管的亮度可以柔和地根据外界光线的变化而变化，不存在闪烁和刺眼现象。通过光敏电阻采集外部光照和光通量的变化，
3、采集到的变化值经过和基准值比较后送到单片机进行运算，由MCU控制数字量的输出，从而改变流经LED灯管的电流，以此来调整LED的亮度，以接近自然光的状态运行，实现智能补光。关键词：台灯光度PWM调光自动调节With the development of modern society, the China youth myopia rate has been high, become the main problems of Chinese family. With the progress of sc
4、ience and technology, scientists hope to use artificial intervention and treatment, fundamentally solves the problem of myopia. However, although the development of modern medicine can solve many difficult problems have plagued mankind, myopia still ca
5、nnot prevent from the source and eliminate. Our experiments on various factors affecting the eyesight, found that the most major causes of adolescent eyesight to drop is light. The traditional eye protection lamp in order to improve the frequency of th
6、e use of high frequency ballasts, electromagnetic radiation, make the eye protection lamp is much higher than the general electrical appliances, mobile phone, computer is several times even dozens of times, seriously affect vision. LED lighting technol
7、ogy, provides us with a way to eliminate is only part of the problem. In this paper, intelligent lighting system based on single chip microcomputer, all-weather simulate the morning of the 9, ten o'clock, natural light, completely eliminate the strobos
8、copic, radiation and glare, the effective elimination of traditional light sources in the ultraviolet, infrared, can effectively reduce the light dimming or brightening of the human eye damage, can effectively reduce the consumption of
