調(diào)光型LED電源的設(shè)計(jì)與實(shí)現(xiàn)

電氣自動(dòng)化論文編號(hào):ZD1080    論文字?jǐn)?shù):10566,頁數(shù):50

目錄
 
摘要 I
1前言 1
2 總體設(shè)計(jì)方案 2
2.1  設(shè)計(jì)成品效果綜述 2
2.2  系統(tǒng)總體結(jié)構(gòu) 3
2.3  系統(tǒng)總體軟件流程 3
3 硬件設(shè)計(jì)方案 4
3.1  LED電源概述 4
3.2  硬件組成與設(shè)計(jì) 4
3.2.1  芯片VIPER12A介紹 4
3.2.2  反激變壓器設(shè)計(jì) 6
3.3  硬件應(yīng)用電路設(shè)計(jì) 8
3.4 PCB布局設(shè)計(jì) 10
3.4.1 PCB排版要點(diǎn) 10
3.4.2 電源電路PCB排版 11
4  軟件設(shè)計(jì)方案 13
4.1 PIC單片機(jī)介紹 13
4.2  PIC12F683芯片 14
4.2.1  PIC12F683特性介紹 14
4.2.2  PIC12F683引腳及分布描述 16
4.2.3  PIC12F683芯片常用寄存器介紹 18
4.3  主要功能塊設(shè)計(jì)方案及程序 19
4.3.1  色彩跳變模塊 19
4.3.2  色彩漸變模塊 21
4.3.3  色彩手動(dòng)變化模塊 23
5  系統(tǒng)的調(diào)試 26
5.1  數(shù)字電路部分的調(diào)試 26
5.2  電源電路部分的調(diào)試 26
5.3  系統(tǒng)調(diào)試 26
5.4  系統(tǒng)的改進(jìn)方向 26
6  總結(jié) 28
致謝 29
參考文獻(xiàn) 30
附錄一  程序 31
附錄二  示波器圖及成品圖 45

摘要
 在全球能源短缺、環(huán)保要求不斷提高的背景下，世界各國(guó)均大力發(fā)展綠色節(jié)能照明。LED照明作為一種革命性的節(jié)能照明技術(shù)，正在飛速發(fā)展。然而，LED驅(qū)動(dòng)電源的要求也在不斷提高。高效率、高功率因數(shù)、安全隔離、符合EMI標(biāo)準(zhǔn)、高電流控制精度、高可靠性、體積小、成本低等正成為L(zhǎng)ED驅(qū)動(dòng)電源的關(guān)鍵評(píng)價(jià)指標(biāo)。與普通LED相比，由于RGB LED的混色可以隨心所欲，因此當(dāng)然在使用效果上比較好，其在應(yīng)用上也要比白光LED來得多元。相較之下，白光LED就比較吃虧。本文介紹了LED電源的概念以及基于PIC單片機(jī)編程的可控型RGB LED電源的制作過程。由于RGB LED燈光亮度高同時(shí)色彩變化的靈活性，因此該系統(tǒng)可廣泛應(yīng)用于照明與裝飾等場(chǎng)合。

關(guān)鍵詞：LED電源、反激變壓器、PIC單片機(jī)

Abstract
 Under the background of the global energy shortage and environmental protection  requirement, the nations all over the world are trying to develop green energy-conserving lighting technology. As a revolutionary energy-saving lighting technology ,LED lighting is developing rapidly. However, the LED power requirement is also improving. High efficiency, high power factor, the safety standards of isolation,EMI standard, high reliability, high current control accuracy, low cost, small volume is becoming the key of LED power’s index. Compared with ordinary LED, RGB LED has more colors, so of course the effect is better, and its application is more than white LED.This paper introduces the concept of LED power and the process of RGB LED’s production.Due to the RGB LED’s high brightness and it’s flexible color shift, this system can be widely used in lighting and decoration,etc.
Keywords: LED power, flyback transformer, PIC SCM