초록 ▼

○ 단위요소 핵심기술 개발
- 저가격, 등기구 간격 최적화 낮은 조명 기술
- 야간 악천후 대응 최적 시인성 확보 기술
- 태양광 기반 에너지 자립형 전력 공급 기술
○ 핵심기술을 적용한 낮은 조명시스템 개발
- 배광 도구에 의한 구분 : Lens type, Reflector type
- 전력 공급 방식에 의한 구분 : 상용전력형, 태양광시스템형
○ On Road Test-bed 구축
- 강릉시 소재 교량 및 무조명 터널 구간
- 캄보디아 씨엠립 소재 앙코르와트 외곽도로 무조명 무전원

○ 단위요소 핵심기술 개발
- 저가격, 등기구 간격 최적화 낮은 조명 기술
- 야간 악천후 대응 최적 시인성 확보 기술
- 태양광 기반 에너지 자립형 전력 공급 기술
○ 핵심기술을 적용한 낮은 조명시스템 개발
- 배광 도구에 의한 구분 : Lens type, Reflector type
- 전력 공급 방식에 의한 구분 : 상용전력형, 태양광시스템형
○ On Road Test-bed 구축
- 강릉시 소재 교량 및 무조명 터널 구간
- 캄보디아 씨엠립 소재 앙코르와트 외곽도로 무조명 무전원 구간
- 경기 광주시 소재 제2중부고속도로 터널 진출입 무조명 무전원 구간
○ 기술사업화
- 대상
·국토교통부 : 일반국도 야간 사고 잦은 곳 및 악천후 위험도로 개선사업
·지자체 : 도로안전 개선사업
·한국도로공사 : 고속국도 안전개선사업, 야간 및 악천후 대응 안전시설물 설치사업
- 적용 구간
· 안개 상습·취약 구간과 같이 악천 후 대응이 필요한 구간
· 교량, 인터체인지 등 높은 조명의 구조적 안정성 확보가 어려운 구간
☞ 정량적 성과 : 논문 6편, 특허 출원 7건 등록 4건, S/W 3건
☞ 기술사업화 성과 : 현장 시범적용 4개소(강릉시 내곡동, 강릉시 강동면 안인진리, 캄보디아 씨엠립, 경기 광주시 남한산성면 광지원리)

(출처 : 요약서 5p)

Abstract ▼

□ Purpose & Contents
○ Road lighting is the typical infrastructure to make safe driving possible by providing the driver with good visibility at night
○ A pole type lighting system is generally used for road lighting but as it illuminates from the elevated position using high capacity light so

□ Purpose & Contents
○ Road lighting is the typical infrastructure to make safe driving possible by providing the driver with good visibility at night
○ A pole type lighting system is generally used for road lighting but as it illuminates from the elevated position using high capacity light source, a lump of light is thrown to the road surface which may interfere with the driver's view and improper lighting design causes energy loss and light pollution, destroying the ecosystem
○ Road lighting requires the cost for installation and maintenance and thus installation rate at IC or JC on expressway or national highway reaches only to 12%.
○ Driving safety on the road without lighting system is critical which is further threatened at inclement weather such as rainy or foggy condition.
※ According to the traffic accident report, fatality and mortality in foggy nighttime is increased 3 to 6 times comparing to normal weather condition and 4 times of that in foggy daytime (2012~2014, traffic accident data, Road Traffic Authority)
○ Low installation rate of road lighting system is basically attributable to the cost for installing lighting pole, power supply system and energy consumption.
○ The proposed technology is thus intended to provide the drivers with driving safety at night from the road user's standpoint as well as reduce the installation and maintenance cost throughout the nation, thereby maximizing the installation rate while minimizing the carbon emission.
○ Traditional pole type street lamp has the structural and functional limits due to different level between light source and road surface, causing difficulties fundamentally in satisfying the performance requirements necessary to secure the visibility at night (safety) and the visibility in inclement weather (alignment, risk factors and lane)
○ Existing low (Line) lighting system was significantly improved from previous pole lighting system which had the shortcoming due to structural constraint but was economically inefficient because of high cost due to low height, limited optical system and dense installation (increased number of poles)
※ It's once considered in design for #2 Youngdong Expressway but not applied because of high installation cost.
○ On the back of COP21 Paris Climate change agreement (2015.12.12.)’energy and environment have been emerged as most critical issue globally.
○ Given the pole type street lamp which is currently used requires a huge power consumption, energy self-sufficiency road lighting using new and renewable energy system is necessary.
○ Thus it's intended to improve the various benefits of Low lighting system such as 1) increasing price competitiveness through optical & structural enhancement 2) securing the performance to deal with inclement weather at night and furthermore, in response to energy and environmental issues, 3) developing new & renewable energy-based power supply system which is then expected to strengthen the competitiveness of low lighting system, making commitment to commercializing the technologies and expanding the market.
○ This study is aimed at commercializing and verification test including lap test, off-road test and on-road test is a must.
○ This study based on field verification test is divided into 3 stages
- Stage 1: (Unit element technology development) Lap test & off-road test
- Stage 2: (Unit/Integrated system technology development) Lap test, off-road test & on-road test bed
- Sage 3: (Evaluation, verification and commercialization): Performance verification, verification/certification and commercialization through on-road test bed installation and operation
○ Core technology development to achieve the goal includes 1) Low lighting at low price and optimal interval 2) Optimal visibility in inclement weather at night and 3) Solar energy-based self-sufficiency power supply system.
○ Distribution to domestic & foreign market through proactive marketing after systematic & efficient research & test verification process.

① Development of core technologies
○ Low cost & high efficient low lighting technology
- Optical system considering light efficiency, performance and cost efficiency and optical light distribution technology.
- Dimming control technology and optimal operation strategy
○ Optimal visibility to deal with inclement weather at night
- Definition of visibility by level of inclement weather condition
- Technology to secure the visibility by inclement weather condition
- Operation strategy to secure the visibility in inclement weather
○ Solar energy-based self-sufficiency power supply system
- Battery charging/discharging control algorithm & system for efficient, stable and long-term power supply (PV, Battery management system,Battery system controller, Converter)
- Design to optimize solar panel and battery modularization

② Test bed installation and performance verification
○ Verification of visibility by inclement weather condition (foggy, rainy)
○ Verification of energy self-sufficiency power supply system, charging/discharging efficiency, long-term operation stability
○ Verification of optical performance and electrical stability by lighting system installation and dimming control technology

□ Results
○ Development of low cost and high efficient low lighting technology
- Design concept definition for improving lighting efficiency and production/installation cost.
◦ Design considering lighting efficiency, production & installation cost and color temperature change in foggy condition
(Safety and durability design according to KS and road standards)
- Evaluation of optical performance of low lighting system
◦ Road evaluation according to Line type road lighting luminance

○ Technology to secure optimal visibility in inclement weather in night
- Strategy and goal in developing the technology to improve the visibility
◦ Study to measure driver's visual distance by level of foggy condition
(Analysis of visibility effect on foggy road by level of lighting condition)
. Review of related documents and previous studies
. Real foggy condition on road and verification test with the subject
. Development of equation on visual distance depending on lighting color temperature by level of foggy condition at night
. Identification of relationship between visible distance and visibility

○ Development of solar energy-based self-sufficiency power supply system
- Determination of target market and performance through technical review and global climatic condition
◦ Analysis of solar energy generation pattern
. Analysis of domestic solar energy generation pattern
. Analysis of the weather in foreign countries
- Test & evaluation of core parts, determination of optimal product groups/combination, technical design and development
◦ Investigation and analysis of the performance of core parts
. Photovoltaic cell, capacitor
. Comparison of chemical cell performance: Lead battery, ferric phosphate
◦ System design for optimal efficiency
. Photovoltaic cell capacity, voltage, gradient
. System voltage & generation, charging/discharging voltage
◦ Development of control system
- Development of solar energy generation charging/discharging technology
◦ Manufacture of Capacitor-using energy self-sufficiency solar power supply system
◦ Hybrid battery system capacity design criteria and system operation strategy and development of control system
◦ Hybrid battery system comprising of durable and temperature-resistance capacitor as main battery and chemical battery as supplementary battery

○ Development of low lighting system using core technologies.
- Development of Spot Type low lighting system
◦ Spot type adopts light distribution technology using the Reflector and developed the particular reflector for unique light distribution of low lighting system.
◦ Change to light distribution is possible through reflector design and adjustment of width and depth of the reflector.
◦ Vacuum evaporation type surface treatment was applied to maintain decreasing light efficiency which the reflector has.
◦ Low lighting pole shall be in principle installed using guardrail, concrete wall and bridge guardrail
◦ Based on above, it's categorized into basic type (guardrail) wall type
(concrete wall) and hanger type (bridge guardrail) for design and manufacture.
- Development of Line type low lighting system technology
◦ Line type adopts light distribution technology using lens and specialized lens was developed to create unique low lighting features.
◦ PMMA material with high transmissivity and UV-resistance while frontal window has PC material and UV HARD coating to enhance the durability

○ Development and operation of test bed
- Test under inclement weather condition and off-road performance of lighting fixture.
◦ A full-scale road environment and wet road surface
◦ Performance test of Spot / Line type low lighting system at inclement weather
- On Road test bed
◦ Consultation with local authorities for installing the test bed
◦ Spot Type(service power) and Line Type(solar system) low lighting system

□ Expected Contribution
○ Area for application
- Street lamp on highway (on #2 Joongbu Expressway, Gwangjiwon-ri,Namhansansung-myun, Gwangju, Gyeonggi-do)
◦ Low lighting system which can provide most safe road environment at night particularly advantages in inclement weather such as rainy and foggy condition.
- At the section where frequent accidents occur
◦ High visibility on road which is also appropriate on complex and bent alignment (test installation on Coast road at Aninjin-ri, Gangreung and the bend outskirt of Ankor wat at Siem Reap in Cambodia)
◦ Foggy section (Sangok tunnel ~ Beonchun #5 bridge on Joongbu Expressway) and road-flooded area
- Fluctuated road such as Interchange or ramp
- Bridge section (Naegok bridge in Gangreung)
- Tunnel entrance/exit (Piam tunnel in Aninjin-ri, Gangreung and 200m away from Gwangjiwon tunnel at Gwangjiwon-ri, Gwangju)
- Urban highway where light pollution is likely
- IoT-based smart street lamp (on #2 Joongbu expressway at Gwanggjiwon-ri,Gwangju, which is interlocked with visibility meter through wireless communication for changing the color temperature in foggy condition)

○ Expected effect
- Improvement of high speed running stability at night (on #2 Joongbu expressway at Gwangjiwon-ri, Gwangju)
◦ The product developed to enhance the running stability at night including improved visibility in inclement weather
- Minimization of light pollution
◦ Road lighting system designed to limit the light on road surface which is optimal to minimize the light pollution to surrounding environment.
- Energy Saving + New & renewable energy (Solar energy-based self-sufficiency power supply system on #2 Joongbu expressway in Korea and Siem Reap in Cambodia)
◦ Energy-saving by 15% at least from existing pole type LED street lamp through road surface-concentrated and high efficiency light distribution system.
◦ Road lighting satisfying M3 grade requirement is possible thanks to energy conservation effect.
- Easy maintenance
◦ Installation at 1m level from the ground level, easy maintenance and cost efficiency with reduced indirect loss (traffic congestion due to installation)
- Leading role in smart street lamp market
◦ IoT-based communication & control technology which provides lighting control depending on weather such as foggy or rainy condition as well as flickering and color temperature control which will lead the market
(Interlocking with visibility meter through wireless communication for color temperature control in foggy condition on #2 Joongbu expressway at Gwangjiwon-ri, Gwangju)

(출처 : SUMMARY 11p)

목차 Contents

• 표지 ... 1
• 제출문 ... 3
• 보고서요약서 ... 5
• 국문 요약문 ... 6
• Summary ... 11
• CONTENTS ... 17
• 목차 ... 19
• 제1장. 연구개발과제의 개요 ... 21
• 1. 연구개발 목적 ... 21
• 2. 연구개발의 필요성 ... 22
• 3. 연구개발 범위 ... 27
• 제2장. 국내외 기술 개발 현황 ... 29
• 1. 관련 분야의 국내외 연구동향 및 학술적 성과 ... 29
• 2. 국내외 관련 기술 특허 동향 ... 31
• 3. 국내외 시장분석 및 사업화 전망 ... 35
• 4. 종합결론 ... 37
• 제3장 연구 수행 내용 및 성과 ... 39
• 제4장. 목표 달성도 및 관련 분야 기여도 ... 85
• 가. 목표 달성도 ... 85
• 나. 관련 분야 기여도 ... 87
• 제5장. 연구개발성과의 활용계획 ... 89
• 가. 성과물의 활용방안 ... 89
• 나. 사업화 계획 ... 90
• 다. 기대성과 및 파급효과 ... 103
• 라. 연구성과의 등록ㆍ기탁 의향 ... 105
• 제6장. 연구 과정에서 수집한 해외 과학기술 정보 ... 107
• 1. 해외 경쟁 제품 ... 107
• 제7장. 연구개발성과의 보안등급 ... 111
• 제8장. 국가과학기술종합정보시스템에 등록한 연구시설·장비 현황 ... 111
• 제9장. 연구개발과제 수행에 따른 연구실 등의 안전 조치 이행 실적 ... 113
• 제10장. 연구개발과제의 대표적 연구 실적 ... 113
• 제11장. 참고 문헌 ... 115
• 끝페이지 ... 117