Journal of Industrial Technology (산업기술연구)

Kangwon National University, Institute of Industrial Technology (강원대학교 산업기술연구소)
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Development of LED sensor lights circuit by passive power factor correction circuit

수동 역률 보상회로를 이용한 LED 센서등 회로의 개발

  • 박종연 (강원대학교 전기전자공학과) ;
  • 유진완 (강원대학교 전기전자공학과 대학원) ;
  • 이학범 (강원대학교 전기전자공학과)
  • Published : 2012.02.29
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Abstract

In this paper, We studied LED(Light Emitted Diode) sensor lights system using PIR(Pyroelectric Infrared Ray) sensor, CdS and MCU(Micro Controller Unit). And applied the valley fill circuit to improve the power factor. We designed the amplifier for each sensor and the LED driver for constant current which is the buck converter. Also, we proposed the algorithm of LED control by each sensors using MCU. Experimental results showed that power factor is 92% with valley fill circuit.

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