【摘要】 隧道入口段照明是保障隧道交通安全采取的措施。驾驶人员察觉目标的反应时间以及察觉相对运动的周边视觉是衡量隧道照明效果的重要指标。基于反应时间试验,将5种色温的LED光源与传统隧道照明光源高压钠灯(HPS)、金卤灯(MH)相比较,分析了光源色温对反应时间和周边视觉的综合影响。研究结果表明:在公路隧道入口段照明水平下,高色温、光谱分布偏向蓝绿光的LED光源照明产生的反应时间最短,周边视觉功效最高。LED光源光效高,色温又可以人为调节,将其应用于隧道入口段的照明,可以在满足交通安全的前提下实现照明节能的要求。更多还原

【Abstract】 Tunnel lighting in tunnel entrance is the measure to ensure the traffic safety of road tunnel. The reaction time that driver perceives the target as well as the peripheral vision that he perceives the relative movement are the important indicators to judge road tunnel lighting effect. Based on the experiment of reaction time,5 LEDs with different color temperatures are compared to traditional tunnel light sources( high pressure sodium and metal halide). The comprehensive influence of color temperature of light source on reaction time and peripheral vision are analyzed. The result indicates that in the lighting level of tunnel entrance,reaction time is the shortest and peripheral visual performance is maximal under the illumination condition that the high color temperature LEDs with the spectra of more bluish / greenish light. The luminous efficiency of LEDs is higher and the color temperature of LEDs can be artificial adjusted,so the requirement of energy-saving illumination can be met on the premise of traffic safety by applying LEDs to lighting at tunnel entrance.更多还原