Journal of Digital Convergence (디지털융복합연구)

The Society of Digital Policy and Management (한국디지털정책학회)
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A Design of the Cat's Eye System with Low Power Consumption Using Solar Energy

태양광을 이용한 저전력의 LED 표지병 설계

  • Kim, Keun-Sik (School of Automobile Engineering, Ajou Motor College) ;
  • Kim, Jong-Hoon (Department of Computer Engineering, Kyungdong University)
  • 김근식 (아주자동차대학 자동차계열) ;
  • 김종훈 (경동대학교 컴퓨터공학과)
  • Received : 2015.11.13
  • Accepted : 2016.01.20
  • Published : 2016.01.28
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Abstract

Typical Retro-reflectors installed on road have problems such as limiting a driver's visibility at night when it is foggy or rainy. On the other hand, LED illuminated studs, called cat's eye system, extends a driver's visibility under these conditions. In this paper, we present a design of the LED cat's eye system using solar energy that can sustain vehicles with about 30-ton weight and is compliant with the IP68 code for water proof as IEC standard 60529. In addition, we propose a scheme of designing a LED driving circuit consuming low power to take into accounts cold weather or rainy season with limited sunlight. This LED cat's eye studs is currently installed and used on expressway and bike route nationally as well as overseas.

도로에 설치된 일반적인 재귀반사형 표지병은 우천시나 안개가 끼는 날씨에서는 야간에 운전자의 시인성에 문제를 초래한다. 반면에 LED 표지병은 이러한 조건에서 운전자에게 시인성을 확대시켜준다. 본 논문에서는 태양광을 이용한 LED 도로 표지병에 대하여 30톤급 차량의 하중량에 견디고 국제방수 IP68 규격을 만족하는 구조 설계 결과를 나타낸다. 또한 태양에너지를 충분히 충전하지 못하는 혹설기 등을 고려하여 저 전력을 소모하는 LED 구동회로 설계 기법을 제시한다. 본 LED 표지병은 국내는 물론 해외에서 자동차 전용도로와 자전거 도로에 설치되어 운용되고 있다.

Keywords

References

  1. O Heung-Un, "Retroreflectivity Performance Characteristics Under Environmental Roadway Conditions Based on Influencing Factors", Korean Society of Civil Engineers, Vol. 27, pp.289-295, 2007
  2. Lee Hyun-Seok, O Heung-Un, Jang Jeong-Hwa, "Analysis of Pavement Marking Performances Considering Influential Factors", Korean Society of Civil Engineers Confernece, pp.3549-3552, 2006
  3. Sang Bum Kim, Yong Seok Kwon, "A Study on Improvement of the Shape and Performance of Raised Pavement Marker", The Korean Society of Safty, Vol. 21, pp.82-86, 2006
  4. Federal Highway Administration(FHWA), "Cost Effectiveness Techniques for Highway Safety", 1985
  5. O Heung-Un, Lee Hyeok-Seok, "Traffic Accidents and Retroreflectivities", Pavement Engineers, Vol.5, No.1 pp.53-59, 2003
  6. Lee Ho-Won, "A Study on The Improving Road Visibility for a Traffic Accident Reduction", Korea Road Traffic Authority, 2009. 2013
  7. Ministry of Land, Infastructure and Transport, "Korea Cycling Design Standards: Process and Contents", 2010
  8. Shin, Heui-Chul, "Implication by Traffic Accident Analysis", The Korea Transport Institute, 2012
  9. Korea Road Traffic Authority, "A Analysis of Bicycle Traffic Accident, KoRoad Vol. 150, 2014.
  10. Oh Seok Jin,, Kim Yoon Mi, Im Jung Jae, Ha Tae Jun, "A Study on Improvement of Design Standards Through the Analysis on Problems of BikeRoad", Korean Society of Civil Engineers, pp.703-704, 2014
  11. Lee Sungwon, Kim Gunyoung, "A Quantitative Analysis of Policy Instruments on the Cycling Safety Perception in Korea", Korea Tranport Institute, Vol 20, pp.15-28, 2013
  12. Choi Byoung GiI, Park Hong-Ki, Na Young-Woo, "A Study on the Design Improvement and Information Service of Bicycle Road Considering Environmental Factor", Journal of the Korean Society of Surveying, Geodesy, Photogrammetry abd Cartography, vol. 90, pp.11-20, 2011
  13. Cha Eun-Jeong, "A Report of Socio-Economic Meaning of the Snow Storms in Jan. 2010", Korean Society of Hazard Mitigation, Vol. 10, No. 4, pp.6-13, 2010
  14. http://www.microchip.com, "MCP1640 Data Sheet", 2015
  15. Keunsik Kim, Jaeseol Kim, Dong-Joo Yoo, "LED Cat's Eye System with Ultra Low Power Consumption", Korean Society of Civil Engineers, pp.2076-2079, 2010