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Design of a Self-Adapted LED Desk Lamp Based on TCS3414CS. L&E 25 (4) 2017

Light & Engineering 25 (4)

Volume 27
Date of publication 12/20/2017
Pages 109-113

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Design of a Self-Adapted LED Desk Lamp Based on TCS3414CS. L&E 25 (4) 2017
Articles authors:
Chen Jingyu, Ge Aiming, Rulong Hao, Zhu Ling, Xinran Tao

Master in Optoelectronic System and Control Technology from Dept. of Light Sources & Illuminating Engineering, Fudan University. She got her Bachelor degree in Electrical Engineering and Automation in 2012. Her research topics are intelligent lighting control systems and relevant optics designs. At present, she is working on the integration of a LED/sunlight hybrid lighting systems

Visiting scholar, Associate professor of Fudan University, Post-doctoral in physics, Ph. D in optical engineering, mainly engaged in the theory and technology of Optoelectronic system, the design of optical system for imaging and illumination, the precise measurement and measurement technology, etc.

Ph.D. student at Fudan University. He is mainly engaged in imaging and illumination optics and system design of new methods of research. His research interests focus on imaging optical design and hybrid lighting system using collecting sunlight, transmitting light and rearranging light to satisfy indoor space

She works mainly on the novel design of the optical devices and system based on Freeform surface. She takes part in the research work in the guidance of Professor Ge and works on the effi cient system of automobile lamps such as the reversing lamp

Is a postgraduate student at Fudan University. At present, she is mainly engaged in research for optical elements with gradient refractive index materials and new methods of system design. Her research focuses on how to achieve optical elements with specifi c characteristics using gradient refractive index materials and theoretical design methods

Abstract:
In this paper, a design of a self-adapted LED desk lamp is presented. The illuminance on the work plane and colour temperature of the hybrid light are measured by the multi-channel colour sensor TCS3414CS. The MCU embedded in the lamp will adjust the LED driversТ output to maintain constant illumination. Experimental results show that, no matter how the ambient light changes under different scenes, the lamp can still provide satisfactory lighting condition with both illuminance and colour temperature adjusted to a predefined value, leading to a more comfortable user experience.
References:
1. Cong-Hong L I, Yan Y. A new design of the intelligent LED table lamp[J]. Information Technology, 2013.
2. Chou C W, Chiang Y H, Tu H W, et al. Effect of LED desk lamp for working eficiency[C]. International Conference on Electrical and Control Engineering. IEEE, 2011:5868-5872.
3. Caicedo D, Li S, Pandharipande A. Smart lighting control with workspace and ceiling sensors[J]. Lighting Research & Technology, 2016.
4. Anandan M. Color sensor integrated light emitting diode for LED backlight: US, US20070170449[P]. 2007.
5. Smith J. Calculating Color Temperature and Illuminance using the TAOS TCS3414CS Digital Color Sensor[J]. Intell. OPTO Sens, 2009 (25): 1-7.
6. Ohno, Yoshi, Hardis, Jonathan E. Four-Color Matrix Method for Correction of Tristimulus Colorimeters[C]// Color Imaging Conference - Color Science, Systems and Applications. 1997:65-68(4).
7. Chiu H J, Lo Y K, Chen J T, et al. A High-Eашciency Dimmable LED Driver for Low-Power Lighting Applications [J]. Industrial Electronics IEEE Transactions on, 2010, 57(2):735-743.
8. Mahdavian M, Wattanapongsakorn N. PID controller tuning and optimizing for greenhouse lighting application considering real-time pricing in the smart grid[C]// International Computer Science and Engineering Conference. 2013:85-90.
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