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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/68297

    Title: 一種運用光場函數化技術的智慧照明系統之設計與驗證;Design and verification of an intelligent lighting system with the illuminance distribution algorithm method.
    Authors: 謝孟廷;Hsieh,Meng-Ting
    Contributors: 光機電工程研究所
    Keywords: 智慧照明系統;光場函數化;影像分析;Intelligent lighting system;illuminance distribution algorithm method;image processing
    Date: 2015-08-04
    Issue Date: 2015-09-23 11:15:05 (UTC+8)
    Publisher: 國立中央大學
    Abstract: 本研究提供一種運用光場函數化技術之智慧照明系統,透過光場函數化技術將燈具的光場分布以數學方程式重建,搭配脈衝寬度調變技術(Pulse Width Modulation,PWM),了解燈具在不同的佔空比下對應的光通量表現,將燈具之光場分布函數以及佔空比對應光通量之權重函數匯入自行開發之照度分布演算模型,即可透過數學模型快速的計算空間內任一點的照度分布。
    ;This study provides an intelligent lighting system with the illuminance distribution algorithm method, fitting light illuminance distribution into a numerical formula. Using the pulse width modulation (PWM) method to control LED lights and measure the relation between luminous flux and PWM duty cycle. With the weighting equation between luminous flux and PWM duty cycle and the light illuminance distribution formula, this study designs a numerical model to calculate the light illuminance in two dimensions area. This article uses optical software to verify the accuracy of the numerical model by comparing the illuminance value calculated by two different software. When simulating single LED light in different angle, the error are all less than 1%; and the simulation for more than one LED light, the error are all less than 2%. The result shows that the numerical model have high reliability in light illuminance calculating.  
    To build up an intelligent lighting system, this study uses image grabber to capture the image of target area and uses image processing technique to analyze the position of users, then adjusts LED duty cycle output to a suitable lighting condition. To verify the idea and design of the intelligent lighting system, this article build up a small size room, setting up LED lights and an image grabber. Switch to different lighting type and lighting condition, and compare the light illuminance with numerical model, the error are all less than 5% in different lighting type. The result shows that the concept and idea this article provide are correct and reliable.
    Appears in Collections:[光機電工程研究所 ] 博碩士論文

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