黃秉鈞Huang, Bin–Juine臺灣大學:機械工程學研究所紀宣如Chi, Shuan-JuShuan-JuChi2010-06-302018-06-282010-06-302018-06-282008U0001-2306200819284900http://ntur.lib.ntu.edu.tw//handle/246246/187375本研究旨在設計一個視覺實驗，由人眼視覺反應來探討LED照明的省電驅動技術，以提升LED照明的能源效率。本研究採用定電流PWM驅動技術，以方波和梯形波進行視覺實驗測試，探討在不同頻率，不同背景色條件下的省電趨勢。再透過統計方式-「卡方分佈」來分析實驗結果，以判定省電與否。研究實地設計一個符合國際照明委員會標準的CIE視覺實驗箱，以CIE 在1964年制定的視角視野10°為本實驗觀測視野大小進行測試。研究結果顯示，PWM頻率的改變不會影響測試者對亮度的視覺判斷，但背景色的改變會影響測試者的判斷；背景為白屏（反射產生光源色）時，測試者被騙機率較高，約可省10％的電；背景為有色面（物體色）時，會因有色面樣本的不同而有不同的實驗結果，但大致約可省5％?10％的電。The main purpose of this study is to test whether we can improve the efficiency of LED by using PWM driven circuits. The human eye instead of optic instruments is the detector for judging the illumination intensity in a visual test box. Constant-current PWM driving technique is used in this study to generate square-wave and trapezoidal-wave currents. The potential of energy saving under light of different wave forms or pulse frequencies, or different background colors are evaluated. The experiment results are analyzed with chi-square test to determine the significance of energy saving. visual test box is built according to the CIE (Comission International del’Eclairage) standard. 10° visual angle is established as the appropriate size for the field of view by CIE in 1964. The results show that PWM frequencies have no effect on the observers’ judgments. However, the background colors can influence how the observers judge the illumination intensity. When the background color is the light-source color, it is easier to trick the observer into believe that the luminance of 90% duty cycle is the same as 100% duty cycle. This will save about 10% of energy. When the background color is the color of the materials, the results differ with different materials, and will save about 5-10% electric energy.致謝 I文摘要 II文摘要 III錄 V目錄 VI目錄 VIII一章 緒論 1.1 研究動機 1.2 研究內容 8二章 硬體設計與製作 9.1 CIE視覺實驗裝置設計與製作 9.1.1 CIE顏色匹配實驗裝置原理 9.1.2 硬體設計 11.2 LED驅動電路設計與製作 13.2.1 方波驅動LED電路 13.2.2 梯形波驅動LED電路 22三章 CIE視覺實驗 30.1 光源色與物體色實驗設計 30.1.1 光源色與物體色 30.1.2 視覺實驗設備與流程 32.2 實驗結果與統計分析 42.2.1 實驗結果 42.2.2 統計分析 50四章 討論與結論 60.1 討論 60.2 結論 61.3未來展望 61考文獻 631733688 bytesapplication/pdfen-US視覺馬赫帶省電PWMLEDthesishttp://ntur.lib.ntu.edu.tw/bitstream/246246/187375/1/ntu-97-R95522808-1.pdf