| 한글제목(Korean Title) |
Design and Implementation of LED Dimming System with Intelligent Sensor Module |
| 영문제목(English Title) |
Design and Implementation of LED Dimming System with Intelligent Sensor Module |
| 저자(Author) |
Young Seek Cho
Jaerock Kwon
Hwan-Yong Kim
|
| 원문수록처(Citation) |
VOL 11 NO. 04 PP. 0247 ~ 0252 (2013. 12) |
한글내용
(Korean Abstract) |
|
영문내용
(English Abstract) |
An intelligent light emitting diode (LED) dimming system is designed and implemented for energy-saving lighting systems. An LED light bulb is powered by an LED driver controlled by a microcontroller using pulse width modulation (PWM) signals. By changing the duty cycle of the PWM signals, the LED driver generates a driving current of up to 1,000 mA. The current consumption by the LED light bulb exhibits a very linear characteristic that indicates that the level of LED dimming can be finely tuned. Multiple sensors — lighting intensity and ultrasonic range sensors — are combined with the LED dimming system to realize an automatically controllable LED lighting system. The light intensity sensor is capable of sensing ambient light. The ultrasonic range sensor can detect objects from 0.15 to 5.6m at a resolution of 0.0254m. The collected information by the light intensity and ultrasonic range sensors is processed by the microcontroller that in turn automatically controls the brightness of the LED light bulb. The algorithm of the software for the LED dimming system is also described.
|
| 키워드(Keyword) |
Dimming
LED driver
LED light bulb
Microcontroller
Sensor
|
| 파일첨부 |
PDF 다운로드
|
