【摘要】：近年來LED照明產(chǎn)業(yè)不斷發(fā)展,LED以光效高、亮度可調(diào)、易控制、壽命長(zhǎng)、色彩多樣等特點(diǎn),逐漸進(jìn)入了通用照明的領(lǐng)域。隨著技術(shù)的發(fā)展和人們對(duì)生活品質(zhì)要求的提高,色溫可調(diào)、高顯色性、智能LED照明系統(tǒng)逐漸受到人們的重視。針對(duì)目前LED應(yīng)用存在著色溫調(diào)節(jié)不精確、顯色性差、控制不方便等不足,本文對(duì)冷暖白光LED混合獲得色溫可調(diào)白光的方法、多基色LED芯片提高光源顯色性、WRGB-LED模塊獲得寬色溫可調(diào)高顯色性白光的方法、室內(nèi)照明控制系統(tǒng)設(shè)計(jì)等四個(gè)方面進(jìn)行了較為完整的理論分析與工程設(shè)計(jì),并進(jìn)行相應(yīng)的實(shí)驗(yàn)。本次課題完成的主要內(nèi)容包括以下幾個(gè)方面:研究了雙通道脈沖寬度調(diào)制的冷暖白光LED混色模型,推導(dǎo)出采用冷暖白光LED混合的LED模塊在雙通道脈沖寬度調(diào)制下的色溫、最大光通量、顯色指數(shù)的簡(jiǎn)捷計(jì)算公式。采用暖白光(色溫3282K)和冷白光(色溫12930K)兩種白光LED進(jìn)行混色實(shí)驗(yàn),通過單片機(jī)控制脈沖寬度實(shí)現(xiàn)占空比可調(diào)。結(jié)果顯示理論計(jì)算與實(shí)驗(yàn)值誤差小,證明該模型調(diào)光的精確性。研究了多基色LED芯片提高光源顯色指數(shù),基于測(cè)色法編寫混合白光參數(shù)模擬計(jì)算軟件。將實(shí)驗(yàn)測(cè)量得到的冷、暖白光及單色LED的光譜導(dǎo)入程序進(jìn)行模擬計(jì)算,得到不同色溫下合成光源顯色指數(shù)的最大值,以及所對(duì)應(yīng)的各種LED配比數(shù)量。結(jié)果表明,暖白光LED與紅、綠、藍(lán)LED合成可以獲得色溫介于3500K到12300K、顯色指數(shù)Ra介于92.0到97.7的白光;與紅、綠、青LED合成可以獲得顯色指數(shù)Ra介于95.0到97.8的低色溫白光(3500K-4500K)。冷白光LED與紅、綠、青LED合成可以獲得顯色指數(shù)Ra介于90.9到98.4的高色溫白光(8200K-13000K)。對(duì)理論計(jì)算的色溫為7803K和顯色指數(shù)Ra為97.29的LED配比數(shù)量進(jìn)行實(shí)際制作,實(shí)驗(yàn)測(cè)量結(jié)果為色溫7992K,顯色指數(shù)Ra為97.1。研究了WRGB-LED模塊得到寬色溫動(dòng)態(tài)變化且高顯色性混合白光。采用暖白與紅綠藍(lán)三基色LED混合、脈沖寬度調(diào)制驅(qū)動(dòng),及優(yōu)化的遍歷范圍,得到了高顯色性、寬色溫可調(diào)的LED合成白光。根據(jù)模擬計(jì)算結(jié)果進(jìn)行實(shí)驗(yàn)驗(yàn)證,獲得了色溫從2572K至12585K的很大范圍內(nèi)準(zhǔn)連續(xù)變化的混合白光,色溫變化平均間隔為193K,并且顯色指數(shù)Ra都能保持在93至96之間。完成基于Zigbee、Wifi的室內(nèi)照明控制系統(tǒng)的整體設(shè)計(jì)。采用C#語言編寫了PC端照明控制軟件,引入RGB混光、色溫調(diào)節(jié)、顯色指數(shù)優(yōu)化算法,實(shí)現(xiàn)LED燈具的無線控制、色溫調(diào)節(jié)、亮度調(diào)節(jié)、顏色變化等基本功能。
[Abstract]:In recent years, LED lighting industry has been developing continuously, with the characteristics of high light efficiency, adjustable brightness, easy control, long life and various colors, LED has gradually entered the field of general lighting. With the development of technology and the improvement of people's quality of life, the color temperature can be adjusted, and the intelligent LED lighting system has been paid more and more attention. In view of the shortcomings of the current LED applications such as inaccurate color temperature adjustment, poor color rendering and inconvenient control, this paper deals with the method of obtaining the white light with adjustable color temperature by mixing the cold and warm white LED. The method of obtaining white light with wide color temperature and high color rendering by WRGB-LED module based on multi-primary color LED chip is discussed. Four aspects of indoor lighting control system design, such as theoretical analysis and engineering design, are carried out, and corresponding experiments are carried out. The main contents of this paper include the following aspects: the color mixing model of cold and warm white LED with double channel pulse width modulation is studied, and the color temperature of LED module with cold and warm white light LED mixed with double channel pulse width modulation is deduced. A simple formula for calculating the maximum luminous flux and color index. Two kinds of white LED with warm white light (color temperature 3282K) and cold white light (color temperature 12930K) were used for color mixing experiment. The pulse width was controlled by single chip microcomputer to realize the duty cycle adjustable. The results show that the error between the theoretical calculation and the experimental value is small, which proves the accuracy of the dimming of the model. The multi-primary color LED chip is studied to improve the color index of light source. Based on the method of color measurement, the simulation and calculation software of mixed white light parameters is developed. The spectral introduction program of cold, warm white and monochromatic LED was simulated and calculated. The maximum color index of synthetic light source at different color temperature and the corresponding number of LED ratios were obtained. The results show that the synthesis of warm white LED with red, green and blue LED can obtain white light with color temperature between 3500K and 12300K, color index Ra between 92.0 and 97.7, and low temperature white light (3500K-4500K) with red, green and green LEDs. The synthesis of cold white LED with red, green and green LED can obtain high color temperature white light (8200K-13000K) with Ra between 90.9 and 98.4. The experimental results show that the color temperature is 7992K and the chromogenic index Ra is 97.1. The experimental results show that the color temperature is 7803K and the chromogenic index Ra is 97.29. The experimental results show that the color temperature is 7992K and the chromogenic index Ra is 97.1. The dynamic change of wide color temperature and high color rendering of mixed white light were studied in WRGB-LED module. Using warm white and red, green and blue trichromatic LED, pulse width modulation drive, and optimized traversal range, the white LED with high color rendering and adjustable wide color temperature is obtained. According to the experimental results, the mixed white light with a wide range of color temperature ranging from 2572K to 12585K is obtained. The average interval of color temperature variation is 193K, and the chromogenic index Ra can be kept between 93 and 96. The whole design of indoor lighting control system based on ZigbeeWifi is completed. The PC lighting control software is programmed with C # language, and RGB mixed light, color temperature adjustment and color index optimization algorithm are introduced to realize the basic functions of LED lamps such as wireless control, color temperature adjustment, luminance adjustment, color change and so on.
【學(xué)位授予單位】：華僑大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類號(hào)】：TM923.34

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