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The Track Initiation Method Based on Ant-Based Clustering Algorithm and Hough Transform Method Read chapter Read first chapter

2012 | OriginalPaper | Chapter

217. Design and Implementation of White LED Lighting Automatic Control System

Authors : Fashan Yu, Mingjie Zong, Xifang Tian

Published in: Electrical, Information Engineering and Mechatronics 2011

Publisher: Springer London

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Abstract

A white LED automatic control system is designed to maintain the illumination intensity of object region. AT89S52 is used as the controller and light senor IC BH1750 with I2C bus is used to measure the illumination of object region. PWM signals are generated to control the RMS of the current to regulate the brightness of white LED. Using numeral PID as the control algorithm the constant lighting control was implemented. The hardware design and software programing of white LED lighting dimming is finished in this paper. The experiment shows the steady-state error is less than 2%, the dynamic characteristics are excellent and the system can reject the interference to some extent.

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Kopp U (2008) High brightness LED dimming technology. Foreign Electron Compon 2:64–67
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Fu J (2007) The boost dual mode PWM + LED drived chip design. Zhejiang University, Hangzhou
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Xing S, Zhuang Y, Liang G (2010) The intensity of illumination with the automatic control system based on PID control. Comput Digit Eng 38(5):71–72
Metadata
Title
Design and Implementation of White LED Lighting Automatic Control System
Authors
Fashan Yu
Mingjie Zong
Xifang Tian
Copyright Year
2012
Publisher
Springer London
Book
Electrical, Information Engineering and Mechatronics 2011

Print ISBN: 978-1-4471-2466-5

Electronic ISBN: 978-1-4471-2467-2

Copyright Year: 2012

DOI
https://doi.org/10.1007/978-1-4471-2467-2_217