Title :
LED lighting control system in tunnel based on intelligent illumination curve
Author :
Yi, He ; Changbin, Li ; Aiguo, Wu ; Shouzhong, Feng
Author_Institution :
Dept. of Autom., Tianjin Univ., Tianjin, China
Abstract :
The LED tunnel lighting system is presented based on field bus RS485. An expert system is used to calculate the demand illumination curve of the tunnel. It is based on the outside illumination of the tunnel, car flow in traffic and car speed. And the tunnel illumination is controlled by the given illumination curve. It makes the bright and dark adaptation process of driver´s eyes in tunnel more natural and smooth, and safeguards the driving. To convert the illumination curve to the control instructions to every LED light, a feedforward and feedback control strategy based on the relationship between light flux and brightness in tunnel is presented. As well as the power energy of tunnel lighting system is saved.
Keywords :
expert systems; feedback; feedforward; field buses; intelligent control; light emitting diodes; lighting control; tunnels; LED tunnel lighting control system; bright adaptation process; car flow; car speed; control instruction; dark adaptation process; driver eye; expert system; feedback control strategy; feedforward control strategy; field bus RS485; intelligent illumination curve; light flux; power energy; tunnel illumination; Brightness; Expert systems; LED lamps; Lighting control; Roads; LED; Tunnel Lighting; expert system??feedforward and feedback control; intelligent control;
Conference_Titel :
Intelligent Computation Technology and Automation (ICICTA), 2012 Fifth International Conference on
Conference_Location :
Zhangjiajie, Hunan
Print_ISBN :
978-1-4673-0470-2
DOI :
10.1109/ICICTA.2012.185
