• 제목/요약/키워드: Street lightings Information

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Performance Evaluation of Smart Street Lighting Systems Applying the PFI Model

  • Hung-Yu Chou;Yu-Te Wei;Yu-Ting Lai;Jun-Teng Zhuang;Jun-Xi Liu;Wen-Chin Chang
    • 국제학술발표논문집
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    • The 10th International Conference on Construction Engineering and Project Management
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    • pp.1278-1278
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    • 2024
  • Private Finance Initiative (PFI) involves long-term contracts where private entities invest in the construction and maintenance of street lighting facilities. The current implementation of PFI Smart Street Lighting Systems faces challenges in the fulfillment process, including discrepancies in quantities, coordination of power variations, delays in the deployment of smart systems, and issues with performance indicator scoring. These challenges disrupt the smooth execution of contractual obligations. Nevertheless, the adoption of intelligent systems in street lighting presents significant advantages in reducing energy consumption, extending the lifespan of fixtures, and enhancing maintenance efficiency. This study aims to analyze an ongoing project, applying the Fuzzy Analytic Hierarchy Process (FAHP) to identify crucial PFI indicators and their weights. The study explores areas of improvement in the project compared to traditional street lighting, aiming to provide solutions to the mentioned challenges. The results indicate that indicators such as PS3 (Lighting Service Continuity) with a weight of 0.384% and PS4 (Smooth Operation of the Smart Street Lightings Management System) with a weight of 0.274% have the highest impact on service performance. Additionally, the project involves replacing 162,000 streetlights, resulting in a yearly energy consumption reduction of approximately 70%, a decrease in monthly maintenance time from an average of 48 hours to 15 hours, and an expected reduction of 900,000 tons in carbon emissions during the project period. Value for Money (VfM) analysis suggests an annual reduction in government expenditures of NTD 66 million. This reveals that implementing PFI model is more advantageous than traditional street lighting procurement, as it allows the government to leverage contractor financing and alleviate the initial high costs of streetlight replacement, thereby reducing the overall costs of streetlight establishment and maintenance.

음향인식기술을 활용한 자동차 인식 조명제어 가로등 개발 (A development of Automotive recognition streetlight lighting control with sound recognition technology)

  • 최원철;우중재
    • 한국산학기술학회논문지
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    • 제16권3호
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    • pp.2135-2140
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    • 2015
  • 본 논문에서는 기존 가로등의 소비 전력을 줄이고 자동차의 유무에 따라 지능적으로 조명을 제어하는 효율적인 새로운 조명제어 시스템을 제안한다. 제안된 새로운 조명제어 시스템은 자동차가 이동할 때 발생하는 음향을 수집하고 분석하여 자동차의 유무를 판별한다. 그리고 자동차 감지 정보를 통해 가로등의 조명을 제어하고 다음 가로등에 자동차 감지 정보를 전송하여 순차적으로 가로등을 점등한다. 실험결과, 자동차의 유무에 따라 조명을 제어하고 자동차의 이동방향을 판별하여 순차적으로 가로등이 점등하는 동작을 확인하였다. 이와 같은 시스템은 자동차의 이동이 적은 지방도로나 국도에서 비효율적으로 항시 점등되어 있는 가로등에 적용하여 에너지를 절감할 수 있는 기술로 판단된다.

수중 양식과 탐사를 위한 LED 녹색평판조명램프 (Green Panel Lighting Fixture of LED Lamp for Aquaculture and Marine Aquanautics)

  • 소현준;강상택;김재균;소대화
    • 한국정보통신학회:학술대회논문집
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    • 한국해양정보통신학회 2010년도 추계학술대회
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    • pp.730-733
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    • 2010
  • 본 논문은 녹색조명설비의 구현으로 얇은 패널구조의 LED 조명등을 제작하여 가로등조명, 수중배양 양식조명, 집어등 및 수중탐사의 특수조명 활용성을 확인하였다. 제작된 패널구조의 녹색조명등은 상기한 용도의 조명등으로서 매우 탁월함이 확인되었다. 그 중 집어등의 경우는, 작은 치어 등의 미세생물체와 어류의 조광이동성 및 군집 활동성 증진에 효과적이었으며, 수중배양 양식 조명에서는 녹색 조류, 해초, 수초 및 각종 유기체의 광합성 성장에 유용하였고, 특히 수중조명장치로서의 방수성 및 방열작용의 탁월성이 확인되었다.

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A Study of Methods to Foster Manhole Cover Design -Focused on manhole cover designs in 'Streets of History and Culture'-

  • Lee Cho-Rog;Yoon Jong-Young
    • 디자인학연구
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    • 제19권3호
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    • pp.167-182
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    • 2006
  • From 1998 Seoul city is being rebuilt for 'the city which people want to go around on foot'. Many streets only for cars have been transformed for pedestrians. In addition to that streets are built not only just to pass by, but also enjoy themselves, so 8 Streets in Seoul have been redecorated as 'Streets of History and Culture'. These Streets are chosen because they have their own unique history or culture, so they are remodeled with lightings, exhibition pavilions or sign postings etc except manhole covers. Even these 8 streets have manhole covers; they are not particular, just same as like other streets. For most streets manhole cover is an essential component of them, but it is mostly omitted to be designed in particular. For the most time some of the standard manhole covers are installed in a street. Taking a look at manholes in Minneapolis city, they inform visitors what the landmark, landscape, symbol, representative flower or tree of the city is. Sometimes they are designed by famous artists and become art which all pedestrian can enjoy. If manhole covers in 'the streets of history and culture' are designed to represent its history or culture, visitors will get information about there easily and enjoy their design. To foster manhole cover designs, the government office should co-work with professional designers or design societies and encourage people to spend a certain amount of the construction cost to design manhole covers. At school designing manhole cover can be handled in an art class and besides can have a class in the field, streets to observe manhole cover designs. Getting more concern of manhole cover design, competitions and exhibitions are able to be held.

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