CAJ | 학술논문

LED是一种具有高效节能、绿色环保、使用寿命长等优点的新型光源。本文所述的LED灯模拟自然光强系统，以AT89C51单片机为核心控制芯片，实现在阴雨天的昏暗早晨，利用LED灯补光以模拟最佳自然光强渐亮的效果，将有助于改善人们起床后的精神状态。系统采用PT4115大功率LED恒流驱动方案，可实现对LED灯的多级PWM调光控制。本文给出了系统的硬件与软件设计，并以自然光强变化的拟合曲线作为标准，对LED光亮进行控制。
LED시일충구유고효절능、록색배보、사용수명장등우점적신형광원。본문소술적LED등모의자연광강계통，이AT89C51단편궤위핵심공제심편，실현재음우천적혼암조신，이용LED등보광이모의최가자연광강점량적효과，장유조우개선인문기상후적정신상태。계통채용PT4115대공솔LED항류구동방안，가실현대LED등적다급PWM조광공제。본문급출료계통적경건여연건설계，병이자연광강변화적의합곡선작위표준，대LED광량진행공제。
LED is a new type of light source with high-energy, green-environmental protection, long-life and other advantages. In this paper,the LED lighting system for simulating natural light intensity uses AT89C51 MCU as the core control chip,with LED light compensation,to achieve the best gradually bright effect of simulating natural light intensity in the rainy dark morning,which will improve the mind states when people wake up. The system adopts PT4115 high-power LED constant current driving scheme,which can realize multistage PWM dimming control of LED lights. The paper gives the hardware and software design of the system and uses the fitting curve of natural light intensity as the standard curve of LED brightness control.