多功能高亮度LED照明灯的设计和推广毕业设计论文题库.doc

摘 要 当今社会，节能环保已成为全人类的共识，因而节能环保的半导体照明和照明器件智能化成为照明领域的发展趋势多功能高亮度LED照明灯的设计多功能高亮度LED照明灯是由开关电源部分，控制部分和白光LED灯三部分构成。总功率为56W，但它的实际亮度已达到普通的0W白光灯的亮度SCT89C51单片机根据外部环境光线亮度自动调节灯光亮度，实现了照明器件的智能化根据外部环境光线亮度自动调节灯光亮度 关键词：半导体照明；白光LED；开关电源；高频变压器 Abstract In contemporary society, energy conservation and environmental protection has become the consensus of all mankind, so energy conservation and environmental protection of semiconductor lighting and lighting devices of intelligence become development trends in the field of lighting. High-Brightness LED lighting design and promotion can reach the purpose of energy conservation and environmental protection. High-Brightness LED lights consist of three parts, the switching power supply, the control, and the White LED lights. Under the effect of switching power supply and control of the common LED, each of the operating voltage is to 3.2 V, operating current 17.5mA and it does not change with the changeable LED temperature, so as to meet current limit and the effect of regulators. In the driving force of a highly efficient switching power supply, LED lights in the practical work for the total power of 5.6 W, but its actual brightness has reached 40 W of ordinary white light brightness. Re-used SCT89C51 SCM, in accordance with the external environment lighting brightness, automatically adjusts brightness light, and the lighting of intelligent devices, and then well positioned to enable lighting of the intelligence and energy conservation. Key words：semiconductor illumination ; white light-emitting diode; switching power supply; high frequency transformer；STC89C51 目 录摘 要 I Abstract II 第1章 绪 论 1 1.1课题背景 1 1.2国内外半导体照明技术的研究现状及发展趋[1] 2 1.2.1我国半导体照明技术的研究现状及发展趋势 2 1.2.2 美国半导体照明技术的现状及发展趋势 2 1.2.3日本半导体照明技术的现状及发展趋势 3 1.3 本章小结 3 第2章 白光LED 4 2.1白光LED发光原理[2] 4 2.2白光LED的特性[2] 4 2.3白光LED工作点的选择 6 2.4 本章小结 7 第3章 LED照明系统的设计 8 3.1 硬件的设计 8 3.1.1电路框图和工作原理 8 3.1.2 LED灯的连接方式的选择 8 3.1.3电源类型的选择 10 3.1.4开关电源的设计 11 3.1.5 环境检测电路 19 3.2软件设计