Today the light of mankind since the dawn of mankind and that they were living "lives" on the huge influence across space is a dynamic energy. Because of this, when all human beings with the light and you can feel more comfortable with a stable mind to the beauty and the pursuit of happiness is to have instincts. Moreover, the spectral characteristics of the sun and the light rhythm of the day, seasonal changes in light of all the plants to produce various physiological responses is the psychic effect of color temperature as the lighting plan to intentionally use the space more comfortable to can be instrumental in creating. For this reason, most modern people spend a lot of emotion in an indoor space, light is needed.
Recently has been the culprit of environmental destruction incandescent, fluorescent, LED light regulation of the use of the demand is growing. Indoor activities of modern society is growing more and more LED lighting as the interior lighting spotlight and into a digital signal can be controlled simply because the LED lighting control technology is also a growing trend.
LED lighting of the traditional incandescent bulbs, fluorescent lamps can achieve higher efficiency compared to the addition since it has the advantage of long life light sources reduce maintenance costs due to replacement can be. LED 50,000 hours lamp life by 50 times when compared to incandescent bulbs, fluorescent lights, 6 times, 4 times in lamps which use it 8 hours a day, assuming the case, life is known to be a whopping 17 years. In addition, the LED current in one direction by the light-emitting device that is dependent on the DC current response rate is very fast, very high recently improved the efficiency of the light fixture to replace the existing policy was to elicit.
In this paper, a fuzzy control system using a combination of external environmental factors, respectively, the conversion of quantitative uncertainty information into the LED lighting is designed to express algorithms, available in indoor circadian control circuit was designed and fabricated LED. Factor in the external environment temperature, humidity, and light intensity values to the controller through the sensor to accept these values and the optimal values for lighting the fuzzy control algorithm is converted into human emotion to feel comfortable to express through the dimming control LED lighting.