자외선 살균용 Deep UV LED Bar 정전류 제어회로 설계
Deep UV LED Bar Constant Current Control Circuit Design for sterilization
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초록
In this paper, it is performed the constant current circuit design of the 275nm Deep UV LED bar which can be used variously. The 275nm Deep UV LED Bar emits ultraviolet rays, so it is important to emit ultraviolet rays constantly for the purpose of use. In order to emit a certain amount of ultraviolet rays as ever, the ultraviolet ray emission should be driven by a constant current source. And also the heat dissipation is particularly important because of the long ultraviolet emission retention time due to the UV LED forward voltage drop. In addition, the algorithm is configured to operate according to human body detection using distance sensor and Bluetooth. Three 275nm Deep UV LEDs were used in series to emit ultraviolet UVC, operating at the constant current of 30mA with an efficiency of 75.2% and a power consumption of 729.6mW. The ultraviolet radiation Power is 15mW. In the fungi sterilization experiment of the UVC LED bar operating at 32 degrees, the sterilization effect was 99.9% at 1.5m distance.
Abstract
In this paper, it is performed the constant current circuit design of the 275nm Deep UV LED bar which can be used variously. The 275nm Deep UV LED Bar emits ultraviolet rays, so it is important to emit ultraviolet rays constantly for the purpose of use. In order to emit a certain amount of ultraviolet rays as ever, the ultraviolet ray emission should be driven by a constant current source. And also the heat dissipation is particularly important because of the long ultraviolet emission retention time due to the UV LED forward voltage drop. In addition, the algorithm is configured to operate according to human body detection using distance sensor and Bluetooth. Three 275nm Deep UV LEDs were used in series to emit ultraviolet UVC, operating at the constant current of 30mA with an efficiency of 75.2% and a power consumption of 729.6mW. The ultraviolet radiation Power is 15mW. In the fungi sterilization experiment of the UVC LED bar operating at 32 degrees, the sterilization effect was 99.9% at 1.5m distance.
참고문헌 (5)
- J. Shin, "Fundamental Characteristics of Deep-UV Light-Emitting Diodes and Their Application To Control Foodborne Pathogens", American Society for Microbiology, Applied and Environmental Microbiology, 82(1), pp.2~10 (2016)
- 김창선, "인체 감지 제어 기능을 갖는 UV LED Bar의 최적 설계", 한국전자통신학회 논문지, 12(6), pp.1219~1226 (2017), 한국전자통신학회[DOI]
- 이광, "LED 정전류 적응 제어 회로 설계", 조명.전기설비학회논문지, 29(12), pp.8~14 (2015), 한국조명.전기설비학회
- Xu Hao Xu, "사물인터넷에 아두이노 윤과 클라우드를 이용한 LED조명 제어 시스템 설계", 한국전자통신학회 논문지, 11(10), pp.983~988 (2016), 한국전자통신학회