자연광과 동기화된 감성조명제어

Abstract

The lighting accounts for 20% of electrical energy. So, the lighting industry is focusing on LEDs to next-generation light source due to energy depletion and environmental issues. Because LEDs are high efficiency, long life, low-power advantages. The brightness of LEDs are changed by current control. Current control is used PWM dimming method. If the people use the RGB LEDs, the people can get a variety of colors, And if the people use the 백색 LEDs, the people can get a variety of color temperature and illuminance. Therefore, LED lighting can apply to buildings, parks, bridges on landscape lighting, And it can apply to emotional lighting indoor. According to the color temperature and illuminance people feel different emotion. So, The spectral characteristics of natural light change during the day, people produce various physiological responses. Therefore, LED lighting will improve the quality of lighting environments by controlling color temperature and illuminance. This paper implement emotional lighting to stimulate the emotions of people by controlling color temperature and illuminance, and synchronized with natural light in real-time. In addition, To improve the quality of the lighting by adding Green LED improves color rendering index. Emotional Lighting are composed LED lighting, constant-current LED driver, digital controllers and color sensors module. First, LED lighting was made using 백색 LEDs of different color temperature. Second, Constant current LED driver was made using only constant current IC. Third, Digital controller for generating a PWM used the PSoC Program. Last, Color sensor was used to measure the color temperature of natural light in real-time.