快速道路低灯位照明关键技术研究

Traditional HID lamps for road lighting are all high-mounted, and evaluated by horizontal illuminance. This would lead to three main problems: glare, invalid lighting and uneven lengthways visuality. In this study, a new low-mounted and dispersed road lighting system using LED as light sources has been put forward. Three key technologies of the system have been proposed and would be systematically studiedon the basis of LED's photometric and colorimetric character,and function of low-mounted dispersed lighting. The research work comprises the all-aroundmeasures ofeliminateglare and energy conservation，and makeoptimization of lighting parameters. The new lighting system can overcome problems of currently used high-mounted lighting,and provides scientific evidence for the application of LED low-mounted lighting. Through further study and analysis of white light sources used for road lighting based on mesopic theory and experiment, we can demonstrate whether the new system could do good to road lighting and advanced the optimized lighting parameters that is suitable for low-mounted lighting..The results of the project will contribute toguide the correct application of LED light resources,improve visual conditionsof drivers,andacquire preferable energy saving effect compare with high-mounted lighting.

传统HID路灯采用高灯位照明方式，主要以水平面照度为评价指标。分析表明，该方式存在眩光、无效照明和可见度纵向不均匀三个主要缺欠。本研究提出基于LED光源的低灯位分散式路灯照明体系，并根据LED光源的光度、色度特性和低灯位分散式照明特点，系统化研究该体系的三个关键性技术问题。包括消除眩光的综合性措施、节能措施和照明参数优化。该体系可克服目前高灯位路灯的固有缺欠，为LED低灯位照明的应用提供科学依据。并且通过中间视觉理论分析和实验研究进一步论证白光LED对道路照明应用的优势并提出适合低灯位道路照明的优化照明参数。.本研究课题将有助于引导LED光源的正确应用，改善机动车驾驶员的视觉条件，并较传统的高灯位照明具明显的节能效果。

本项目首先对现有快速道路路灯系统进行了深入分析，指出目前高灯位路灯存在眩光、无效照明及可见度不均匀的问题。在此基础上，通过中间视觉理论分析和实验研究，提出了采用LED光源的低灯位分布式逆向照明方式，并系统化研究了该方式的关键性技术问题，提出适合低灯位逆向照明的优化照明参数。基于逆向照明，项目研究内容并进一步拓展为包括对于低灯位LED分布式照明的特点、照明效果现场的测试分析和照明参数优化的多维度道路照明方向。. 低灯位快速道路照明系统采用小功率LED芯片、专用的配光与特殊的透镜技术，将灯具直接置于快速道路护栏上，经过大量实验的验证、分析与改进，从平均亮度、平均照度、阈值增量、均匀度等几方面对低灯位路灯系统的安装间距、高度、投射角等相关的各项照明参数进行了优化。. 本项目的创新性研究成果主要有：1、在理论层面上提出需求导向的道路照明理念并完成《道路照明：多维度照明理论与技术》专著一部以及研究论文10篇；2、在技术层面，构建了基于LED低灯位分布式照明的多维道路照明系统，该系统针对高速公路、公路隧道和市政道路分别提出低灯位、多灯位和中灯位三种照明形态。项目实施期间共获国内发明专利授权8项，实用新型3项。. 本项目的理论与技术成果为道路照明的进一步理论研究与LED低灯位照明设计与施工提供了理论与实验依据。