• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.5
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• pp.3385-3390
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• 2015

In this paper, we constructed using a Cortex M3 microcontroller developed by ARM Inc. as a way to control the LED light more efficiently. And Using the short-range wireless communication by the Bluetooth communication method applied to control the LED light was configured to wirelessly control the wireless circuits. In this paper, users can easily download and easy to wirelessly control the LED lighting control circuit to design an Android application from Android-based smartphone so that you can control with your smartphone to have anyone to control the LED lighting control circuit wirelessly. If the LED lights radio control circuit is configured with the Cortex M3 in this paper is applicable to both indoor and outdoor and eco-friendly technology, is using LED driver to enhance the efficiency of the LED becomes stable voltage supply is made, the brightness of LED lighting control.

• The Journal of the Korea Contents Association
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• v.10 no.11
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• pp.38-47
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• 2010

DMX512 protocol controls a lighting system for outdoor lightings and stage lightings. But lighting systems using DMX512 protocol based wired needs expensive cost in installation, maintain, repair. And it has restrictions about control channel numbers and its ranges. Also, it needs additional equipments for the control of lighting systems which installed on wide area. In this paper, we propose wireless control technique and a ZDMX module for lighting systems on wide area based on DMX512 protocol. Our technique solves problems of DMX512 protocol, and it can control lighting systems on wide area effectively. We developments the LED lighting system using ZDMX modules and we have confirmed the suitability of our technique for real environment.

• Proceedings of the KIPE Conference
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• 2012.07a
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• pp.427-428
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• 2012

LED 무빙라이트는 기존 할로겐 램프를 사용하는 무빙라이트에 비해 에너지 소모율이 낮고 효율성이 높아 무대용 및 방송용으로 각광을 받기 시작했다. DMX512 프로토콜은 LED를 제어하는 표준 프로토콜 중의 하나이며 무대조명용, 방송조명용, 경관조명용 등의 분야에서 이용되고 있다. 그러나 DMX512 프로토콜은 유선 환경에서 제어되기 때문에 넓은 지역의 조명은 제어하는데 어려움이 존재하며 제어선들의 복잡성, 유지/보수의 어려움 등의 문제점이 존재한다. 본 논문에서는 이러한 유선 환경에서의 문제점을 해결하기 위해 무선통신을 이용하여 DMX512 프로토콜을 무선으로 제어할 수 있는 조명제어시스템을 설계한다.

• Proceedings of the KAIS Fall Conference
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• 2012.05b
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• pp.502-506
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• 2012

본 논문은 LED 조명 환경에서 Zigbee를 이용해서 Dimming 제어 모듈을 구성 하였다. 현재 사용되고 있는 LED 제어 모듈는 일반적으로 단일 출력을 사용하여 LED 조명의 일정한 밝기를 고정 출력이 되도록 사용되어지고 있다. 본 논문에서 구성된 무선 통신 모듈은 Zigbee를 이용하여 실내 환경에서 측정된 조도값을 무선으로 전송하도록 조도 센서 모듈을 구성 하였으며, 무선으로 전송된 조도값에 대한 출력을 제어하도록 구성하였다. MCU는 LED Driver IC를 이용하여 PWM 신호에 따라서 LED Driver IC에서 출력 전압을 변화하도록 하여 6단계의 밝기로 LED조명을 Dimming하도록 구성하였으며, 무선조도 센서는 10~15m의 거리에서 안정적으로 동작된다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2013.10a
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• pp.188-191
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• 2013

In this paper, in order to economize energy inside the vertical-type water treatment plant, a chamber-illumination-LED control board, which operates via nature light or human's touches, is proposed. Moreover, this illumination control process is contrived to be wirelessly monitored in real-rime. In addition, Zigbee communication code is programmed to implement the control board's function of wireless data transmission and automatic LED brightness control. The presented control method contrives brightness to be adjusted in real-time by dimming control, which means nature light changes control, so that the interior energy can realize the maximum energy conservation.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.13 no.10
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• pp.4740-4744
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• 2012

The purpose of this paper was to make a LED light control module using Zigbee. The module was made so that brightness of the LED light changes according to the ambient brightness. A 8-bit microcontroller was used to implement the module to enable LED dimming and wireless light intensity measurement. Using the proposed method, power consumption can be improved by up to 48% on average, with 3.4-0.4W changes in power. The measured ambient light intensity values are converted from analog to digital and outputted as a PWM waveform. According to the output waveform and changes in the current outputted from the LED driver, the brightness of the LED light is controlled. Also, Zigbee with close-range wireless communication capabilities was used to enable wireless transmission of light intensity measurements.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.3
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• pp.66-72
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• 2016

An LED lighting control system was developed to combine information technology and LED lights for efficient management and energy savings. The system can monitor and control the status of an LED luminaire using Bluetooth wireless communication, sensor technology, and smart phones. An LED lighting control circuit was designed using a temperature sensor, illumination sensor, and Bluetooth module with a fuzzy constant-current control circuit. We extended the lifetime and prevented damage to the LED by optimizing the supply current of the LED luminaire based on the heat-generation temperature of $70^{\circ}C$ of an LED heat sink. We also automatically adjusted the ON/OFF time depending on the ambient illumination of the LED luminaire. By allowing easy control of the LED luminaires on a smartphone, we improved the efficiency and achieved energy savings. The control system was validated through experiments for normal operation.

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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• 2007.05a
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• pp.135-140
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• 2007

유비쿼터스는 정보화 사회의 키워드가 되면서 새로운 정보통신 환경구축이 요구되고 있다. 국내 아파트에 있어 홈네트워크 설치가 증가하고 있으며 편리하고 다양한 기능들이 부가되고 있다. 세대내에서 조명, 난방, 가전제어와 보안 서비스의 제공은 물론 외부로부터 인터넷, 핸드폰으로 세대에 설치된 기기를 원격제어 감시하는 지능화로 발전되고 있다. 조명설비에 있어 첨단기술과 통합한 다양한 솔루션으로 세대의 일괄소등, 조광패턴제어, 무선리모콘, 유무선 원격제어가 활용되고 있으며 다양한 디자인의 조명기구와 제어시스템의 개발로 시간과 분위기에 적합한 조명을 연출하고 있다. 조명제어기술의 발전은 에너지 절감효과, 사전감지 기능으로 안전성 확보, 사용자의 편리성이 향상되어 미래 주거에 있어 쾌적하고 경제적인 조명환경 구현에 이바지하게 될 것이다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2013.05a
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• pp.553-556
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• 2013

Currently green growth and energy saving are major issues and solution using low-power LED lighting devices are gaining popularity. There are a few standards to control these LED lighting equipment and DMX512 protocol is a typical communication control standard used. DMX512 lighting control protocol is one of standard protocols widely used in various fields which include mainly stage lighting and landscape lighting. But in DMX512 protocol, line is to be connected to a wired connection. Advantage of wired connection is stable data transfer operation but it adds complexity and certain constraints as well in wired connection. To solve this problem, wired connection can be replaced efficiently with a wireless connection but for wireless, problem of data loss and two way communications arises. In this paper, these problems of wireless communication for DMX512 have been addressed and solutions for two way communications and data loss problem have been proposed.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.11 no.4
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• pp.31-38
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• 2011

In this paper, we propose an autonomous Indoor lighting control system in which indoor lighting devices are autonomously controlled such that electricity bills are minimized in our daily life. Our focus is to utilize Passive Infrared (PIR) sensors to detect the presence of human being indoor and automatically to control indoor lighting electric devices. A control algorithm is also devised to control the whole system. We justify the proposed system by demonstrating specific applications in our everyday life. Cost survey and experimental results also demonstrate the efficiency of the proposed system in real life.