Title :
Halftone control method in white light leds by using an embedded remote controller with ZigBee communication
Author :
Hung, Chi-Huang ; Bai, Ying-Wen
Author_Institution :
Grad. Inst. of Appl. Sci. & Eng., Fu Jen Catholic Univ., Taipei, Taiwan
Abstract :
In this paper we design an automatic light controller which consists of two parts: an LED array with a control unit and an embedded remote controller with ZigBee communication. The LED array includes both an LED array and a transmission controlled module. We use the halftone method to transform different LED array patterns into gray patterns and use those different halftone patterns to control the LED on/off which can adjust the LED light brightness, just like using PWM. We use ZigBee technology to send a brightness control signal as a distance measurement by means of an embedded remote controller. Visual Studio is used as the development software for our design of the graphic interface to provide a user-friendly operation.
Keywords :
LED lamps; brightness; control engineering computing; graphical user interfaces; optical control; telecontrol; LED array; LED light brightness; Visual Studio; ZigBee communication; distance measurement; embedded remote controller; graphic interface; gray patterns; halftone control method; halftone patterns; white light LED; Arrays; Brightness; Light emitting diodes; Lighting; Pulse width modulation; Software; Zigbee; Halftone; ZigBee; white light LED;
Conference_Titel :
Electrical and Computer Engineering (CCECE), 2010 23rd Canadian Conference on
Conference_Location :
Calgary, AB
Print_ISBN :
978-1-4244-5376-4
Electronic_ISBN :
0840-7789
DOI :
10.1109/CCECE.2010.5575227
