便携式OLED集中控制照明系统研究

发布时间：2018-05-05 15:49

本文选题：色温调节 + OLED模组　；参考：《福州大学》2014年硕士论文

【摘要】：随着科技进步的日新月异和生活水平的不断提高,人们对照明系统所营造光环境的舒适度、资源消耗、人性化设计等方面的要求越来越高。而OLED白光器件由于在色温、亮度调节、高显色性能和环境保护方面具有传统光源无法比拟的优势,日益受到照明市场的青睐。因此,本课题结合人体对光环境的感受,研究一种色温和亮度可以自动调节的白光OLED智能照明系统。首先,传统照明系统一般只能实现光源的开、关和亮度调节,难以根据环境营造不同的光氛围。本课题基于三基色白光OLED,通过分析不同光环境对人体生理与心理的影响,研究光源色温与人体热舒适性关系,建立了舒适度等级与光源色温的对应关系；然后,结合三基色混合光原理,推导出RGB三基色亮度系数与光源色温及亮度的关系,从而建立了环境参数与三基色OLED光源色温、亮度的映射关系,为本系统实现智能调光奠定理论基础。本课题研究的智能调光主要体现在能够根据环境的变化,自动改变OLED光源的色温及亮度,而且,用户可根据不同的应用场所,选择相对应的场景模式。其次,针对传统照明系统控制方式繁锁、可扩展性弱、终端控制设备笨重等问题,本系统中央控制模块引入嵌入式Linux系统,充分发挥嵌入式Linux系统软硬件可裁剪、体积小等优点,并通过RS485总线方式实现对各个OLED照明单元的集中控制。此外,对于单独的OLED照明子单元,为了提高光源的亮度和均匀性,本课题还从电路设计角度着手,对各个OLED光源模组集中控制,提出了一种OLED模组均匀调光的方法,即结合电源管理和RGB三基色亮度系数调节两方面,实现OLED模组均匀调光,从而有利于OLED光源照明的大面积化。最后,基于未来光伏建筑一体化发展趋势,本系统采用有机薄膜太阳能电池和电网混合供电方式,使得系统能够方便地使用太阳能,低碳环保,有效地扩展了本系统的应用场合。测试结果表明,通过QT界面,系统可实时监控OLED照明子单元的工作情况；并且,OLED模组光源可以实现色温在2000K-7500K内自动可调,以及同一色温条件下,15级亮度自动调节功能；另外,通过手动方式还可选择多种应用场景模式。因此,本课题的开展对人性化照明研究具有较高的参考意义。
[Abstract]:With the rapid development of science and technology and the continuous improvement of living standards, people have higher and higher demands on the light environment created by lighting system, such as comfort, resource consumption, humanized design and so on. OLED white light devices are more and more popular in lighting market for their advantages in color temperature, brightness adjustment, high color performance and environmental protection. Therefore, this paper studies a white OLED intelligent lighting system which can automatically adjust the color and brightness according to the human body's perception of light environment. Firstly, the traditional lighting system can only realize the light source on, off and brightness adjustment, so it is difficult to create different light atmosphere according to the environment. Based on the three-color white light OLED, by analyzing the physiological and psychological effects of different light environments, the relationship between the light source color temperature and the thermal comfort of human body is studied, and the corresponding relationship between the degree of comfort and the light source color temperature is established. Based on the principle of three primary color mixing light, the relationship between the brightness coefficient of RGB three primary color and the color temperature and brightness of the light source is deduced, and the mapping relationship between the environmental parameters and the color temperature and brightness of the three primary color OLED light source is established. It lays a theoretical foundation for the realization of intelligent dimming in this system. The intelligent dimming in this subject is mainly reflected in the ability to automatically change the color temperature and brightness of the OLED light source according to the change of the environment, and the user can choose the corresponding scene mode according to different application sites. Secondly, aiming at the problems of complex control mode, weak expansibility and heavy terminal control equipment in the traditional lighting system, the central control module of this system is introduced into embedded Linux system, and the software and hardware of embedded Linux system can be cut out fully. Small size, and through the RS485 bus to achieve the centralized control of each OLED lighting unit. In addition, for individual OLED lighting sub-unit, in order to improve the brightness and uniformity of the light source, this subject also starts from the angle of circuit design, centralized control each OLED light source module, and puts forward a method of uniform dimming of OLED module. Combining the power management and the adjustment of the RGB three primary color luminance coefficient, the OLED module is realized to dimming light evenly, which is beneficial to the large area of the OLED light source lighting. Finally, based on the future development trend of photovoltaic building integration, the system adopts organic thin film solar cell and power grid hybrid power supply mode, which makes the system easy to use solar energy, low carbon environmental protection, The application of this system is extended effectively. The test results show that through QT interface, the system can monitor the working condition of OLED illumination subunit in real time, and the module light source can realize the automatic adjustment of color temperature in 2000K-7500K and the automatic adjustment of brightness of 15 levels under the same color temperature. A variety of application scenarios can also be selected manually. Therefore, the development of this topic has a high reference significance for the study of humanized lighting.
【学位授予单位】：福州大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM923.34

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