• Title, Summary, Keyword: LED Streetlight

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Study on the Development of Large Capacity LED Streetlight Luminaire with adjustable Light Distribution Characteristic (배광특성 조절이 가능한 대용량 LED 가로등기구 개발에 관한 연구)

  • Lee, Wan-Bum
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.16 no.12
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    • pp.8901-8907
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    • 2015
  • Conventional streetlight with the not-adjustable light distribution characteristic is generating light pollution such as glare, damage to the crops and disturbed sleep, because beam of streetlight is not distributed evenly according to the surrounding areas and road conditions. In this paper, we proposed the new structure LED streetlight controlled light irradiation angle according to the surrounding areas and road conditions. Proposed LED streetlight are available to the adjustable light distribution characteristic using the half-circle angle control device. Result of measurement and simulation, beam angle is made available to control at least from $100^{\circ}$ up to $154^{\circ}$, average illumination exceeded 15% of KS regulation and overall uniformity exceeded more than 50% of KS regulation. the Developed large capacity LED streetlight luminaire is considered to minimize glare and light pollution and optimize uniformity ratio of illuminance.

High Speed PLC-based Automatic Control System for a Smart LED Streetlight (스마트 LED 가로등을 위한 고속 전력선 통신 기반 자동제어 시스템)

  • Kim, Young-Suk;Lin, Chi-Ho
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.14 no.5
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    • pp.95-102
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    • 2014
  • In this paper, we propose the high speed PLC-based automatic control system for a smart LED streetlight. The proposed the automatic control system were constructed of a power line modem part and monitoring part, streetlight controller part for the high speed communication frequency band and streetlight ballasts characterization and real-time remote control using a high-speed PLC network, and it was designed to meet to lighting grades conditions of KS road lighting standards. The proposed automatic control system were easy monitoring of the power consumption using PC through to the comparison result of the existing streetlight system. As a result, it was confirmed to the possibility of efficient operation for the real-time monitoring and maintenance by induction of reasonable power consumption through to the LED streetlight state checking and remote-control. In addition, we proved to improvement of expected effects for the power cost savings, the energy efficiency, and streetlight differentiation and advanced.

Study on the Development of LED streetlight control system using GPS satellite communication and Arduino (GPS 위성통신과 아두이노를 이용한 에너지 절약형 LED 가로등 제어 시스템 개발에 관한 연구)

  • Lee, Wan-Bum
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.17 no.4
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    • pp.632-637
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    • 2016
  • A streetlight control system was developed using information technology and LED lights for efficient management and energy savings. The proposed system can control the power usage of an LED streetlight luminaire using GPS satellite communication and an Arduino with a built-in microprocessor. A control circuit was designed to control the current using GPS, a control unit, transistor, resistor, and constant-current supply circuit. The circuit was validated through experiments with normal operation. Using GPS, the control system extracts accurate time and location information according to the season, and it controls the current supplied to the LED streetlight according to the extracted time. Power consumption was reduced by more than 11%. The control system could reduce accidents caused by conventional lighting systems used to save energy, and it could improve the inefficient management of energy by preserving constant brightness of a streetlight at times and in areas that have less traffic.

A Study on the Heat Dissipation of LED Streetlight Using PCM (PCM을 이용한 LED 가로등의 방열에 관한 연구)

  • Jung, Eui-Chan;Chang, Sung-Ho;Kang, Seoug-Wan;Kim, Min-Ho;Nho, Kwon-Hak;Lee, Young-Wook;Choi, Yu-Bok
    • Journal of the Society of Korea Industrial and Systems Engineering
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    • v.33 no.4
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    • pp.79-84
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    • 2010
  • In recent years, conventional streetlight is replaced by LED streetlight to reduce power consumption dramatically and to maximize lighting effects. However the characteristic of power LED itself driven by high current to increase the illumination, we need to develop effective heat release device. This study suggests new concept of heat dissipation device using PCM (Phase Change Material) and shows an experiment results to investigate thermal effects of PCM.

Design and Implementation of LED Streetlight System for Remote Control and Wi-Fi Service (원격제어 및 Wi-Fi 서비스가 가능한 LED 가로 등 시스템 설계 및 구현)

  • Lee, Sang Hoon;Shin, Soo Young
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.40 no.1
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    • pp.233-239
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    • 2015
  • The demand of remote control and monitoring for efficiency and applications of LED streetlight is increasing continuously because the demand of LED streetlight was increase last few years. Existing street light remote control system is wired using a power line network. The wireless connection exists, but due to its low data transmission rate, it cannot support specialized applications. It can only support simple control and monitoring. In this paper, we propose a system that uses a IEEE 802.11s wireless mesh network based on WLAN, as a backbone network for remote control and monitoring of the LED street lights along with other specialized applications. Using the wireless mesh network for remote control and monitoring the LED street lights, the same can be used to act like a public Wi-Fi access point. We have designed Wi-Fi integrated LED streetlight controller and implemented our system. We evaluated the performance of our system on a real test bed. Our proposed system is expected to perform the role of a U-city infrastructure by utilizing the wireless mesh network.

Wireless LED Streetlight Platform with Weather Monitoring and Color Temperature Control System (기상 모니터링과 색 온도 제어 시스템을 지원하는 무선 LED 가로등 플랫폼 설계 및 구현)

  • Daely, Philip Tobianto;Bayu, Satrya Gandeva;Kim, Jin Woo;Jang, Yunseong;Kim, Dong-Pyo;Shin, Soo Young
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.42 no.5
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    • pp.1038-1046
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    • 2017
  • In this paper, we propose the design of LED Streetlight Platform with capabilities of weather monitoring and color temperature control. Several previous works are focused on the energy efficiency or data management of streetlight system, but no work has been done on the lighting performance, especially when natural phenomenon such as fog or haze appears on the street and obstructs the visibility of drivers and pedestrians. To solve such issue, we propose the use of two LED lamps with different correlated color temperature, which will be activated interchangeably according to the condition on the street. We also present the design of communication scheme between each devices in the system. Moreover, our experimental results show the LED Streetlight Platform can perform well and the data can be displayed properly at the website.

Making Folding LED Streetlight Equipped with Solar Panels for Pollution Prevention and Easy Maintenance (오염방지 및 쉬운 유지보수를 위한 접이식 태양광 전지판을 장착한 LED가로등 제작)

  • Lee, Kyong-Ho
    • Proceedings of the Korean Society of Computer Information Conference
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    • pp.417-419
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    • 2014
  • 본 논문에서는 태양광 전지판을 장착한 LED 가로등을 설계 제작하였다. 제작비용을 고려하여 간단한 구조에서 태양광 전지판에 많은 양의 태양광을 받도록 하고, 태양이 없어 발전을 하지 않을 때는 태양광 전지판에 오염 물질이 적게 부착되게 하며 또 태양광 전지판에 붙은 이물질, 오염 물질을 쉽게 제거 작업을 하게 하기 위하여 태양광 전지판을 접을 수 있도록 구성하였다. 또한 LED 인버터를 사용하지 아니하고 직류를 그대로 사용하게 하므로 전기 변환에 따른 에너지 손실을 방지할 수 있고, 이에따라 시스템의 효율을 기할 수 있었다. 본 연구를 통해 LED 등 설계 및 제작 기술, 인버터 변환 없는 직류 사용 효율 증대 기술, 원격 및 수동 조작 Controller 설계 및 제작 기술, 접이식 Sollar Cell 기구물 개발 기술을 확보하고 향후 태양광 전지판 가로등과 관련된 다양한 연구를 할 수 있는 기반을 마련하였다.

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Development of Convergence LED Streetlight and Speed Bump Using Solar Cell and Piezoelectric Element (태양광과 압전소자를 이용한 융복합 LED 발광 과속방지턱 겸용 가로등 개발)

  • Nahm, Eui-Seok;Cho, Han-Jin
    • Journal of Digital Convergence
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    • v.14 no.5
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    • pp.325-331
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    • 2016
  • In driving at evening or night, we are not able to recognize the speed bump and so stop suddenly. It could result in accidents. And also, we have a restriction of street light installation in farm road because it could be harmful to the crops and driver could not recognize the walking people. It needs to develop the speed bump with light and streetlight to be non harmful to the crops. So, we develop both the speed bump and streetlight with LED which could be non harmful to the crops and be increased recognition of walking people in farm road. For LED lighting power, we use the solar cells, and piezoelectric elements. It has automatic on/off according to power saving rates without illumination sensor. Minimization of circuit elements and design of minimum resisters and low power LED was used for power saving in assuring 3-days.

Implementation of a Ad-Hoc based LED-IT-Sensor Integrated Streetlight with Selective Remote Control (선택적 원거리 점멸이 가능한 Ad-Hoc 기반의 LED-IT-센서 통합 가로등 시스템 개발)

  • Oh, Sun-Jin
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.11 no.5
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    • pp.19-25
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    • 2011
  • With the issue of a Green IT Technology, studies on a environment-friendly luminous source that can reduce Carbon discharge and increase energy efficiency are actively progressed all over the world. Especially, with the problems of high oil price and environmental pollution, LED has made a great attention as a new luminous source that can replace the existing incandescent bulbs and fluorescent lights. In this paper, the proposed streetlight system becomes more intellectual by combining the low power consuming, high efficient, and high luminous LED module with a complex sensor module with temperature, humidity, illumination and motion sensors. Then, we design and implement the Ad-Hoc based LED-IT-Sensor integrated streetlight system that can maximize the energy savings efficiently with central monitoring system and selective remote dimming control by connecting them to the wireless ubiquitous sensor network(USN) using a Zigbee module.

150 W LED Streetlight Optimal Design Using 21 W LED Engine (21 W LED 엔진을 이용한 150 W급 가로등의 최적설계)

  • Shin, Wang-Soo;Lee, Seung-Min;Kim, Beom-Su;Park, Dae-Hee
    • Journal of the Korean Institute of Electrical and Electronic Material Engineers
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    • v.29 no.1
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    • pp.62-67
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    • 2016
  • In this paper, the IES file was measured by applying a secondary optical lens to a 21 W LED engine, and the lighting calculation software RELUX was used to perform simulations with the data file of this measurement. For two-lane (two way) concrete paved roads, six LED engine are applied to each streetlight and simulation results show that Uo (uniformity) 0.56, UI (longitudinal uniformity) 0.86 and TI (threshold iIncrement) 9% which satisfies the required standards. RELUX was also used to LED streetlights by designing them in three dimensions, that is ${\pm}25%$ of the arm length of 2.8 m standardized by the road lighting standards of the Korea Expressway Corporation. Comparative analysis was carried out on adjustments were made in increments of 0.1 m that Uo, UI, and TI values in the range of arm lengths from 2.1 m~3.5 m. For the arm length range of 2.1 m~2.4 m, Uo was high, whereas UI was low. Therefore, we present the optimal light distribution values designed for an arm length of 2.5 m.