Research Of Portable And Centralized Control System For OLED Lighting

With the development of technology and the improvement of our living standards, the requirements of the light environment,resource consumption,the humanized design and other aspects for the lighting system are also increasing. While Organic Light Emitting Diode (OLED) has incomparable advantage over the traditional light source in the color temperature,brightness adjustment, color rendering index and environmental protection,which is becoming more and more popular in the lighting market.The white OLED intelligent lighting system combined with human feeling of light environment was researched in this paper,which can automatically adjust the color temperature and brightness of lighting source.Firstly, the traditional lighting systems generally only achieve light on or off and brightness adjustment, thus they have difficulties to create different light environments according to the ambient atmosphere.Through analyzing the effect of different light environment on human physiology and psychology,this project studys the relationship between the color temperature and thermal comfort of human body which is based on three primary colors white OLED,and establishes comfort level with color temperature of the the light source corresponding relationship.Then, combined with the principle of three primary colors of light, this paper deduces the relation of luminance coefficient of RGB tricolor and color temperature and brightness of light source,thereby establishing the environmental parameters and color temperature and brightness of white OLED source mapping relationship.which is for intelligent dimming system to lay the theoretical foundation. The intelligent dimming of this topic research is mainly manifested that automatically changing the color temperature and brightness of OLED light source for different environment,and the users can select the corresponding scene mode according to different applications.Secondly, the traditional lighting system often has the problems of the complicated control mode,weak extensibility,bulky problems such as terminal control equipment and so on,and through the RS485 bus way to realize the centralized control of all the OLED lighting units.In addition,for each OLED lighting unit,in order to improve the brightness and uniformity of the light source, this paper presents a uniform dimming method of OLED module from the perspective of the circuit design,by combining power management and adjustment for the luminance coefficient of RGB tricolor. The method can realize OLED module even dimmer, which benefits the large area of OLED lighting.Finally, the system adopts the organic thin film solar cells and grid power supply on account of the development trend of the future integration of architectectural lighting,so that making the system easily to use solar energy, low carbon environmental protection, effectively extend its applications.Experiments showed that the system can real-time monitoring each OLED lighting unit by QT interface.And the OLED module can realize a kind of color temperature and 15 levels brightness adjustment at range from 2000K to 7500K. What’s more,the users can also choose a variety of scene modes through the manual way.Therefore,the subject is of high reference value for human lighting research.