自发光交通标志在农村公路中的应用研究

Study on Application of Self-luminous Traffic Signs on Rural Highway

明确目前常用自发光材料特点,优选出稀土型自发光材料。根据自发光交通标志的不同应用场景,对不同类型自发光交通标志进行针对性设计。采用光迹追踪软件TracePro建立了农村公路自发光交通标志道路照明模型,在此基础上探究了纵向间距、设置高度以及标志尺寸等自发光交通标志关键布设参数对夜间引导效果的影响规律,为关键布设参数的选取提供理论依据。借助模拟驾驶软件UC-win/Road对拟定的自发光交通标志布设方案进行夜间可视化模拟与检验,进而验证布设方案的可行性,并提出优化措施。研究结果表明:稀土型自发光材料亮度高,发光时间长,是目前性能较为优异的自发光材料。随着自发光交通标志纵向间距的增大,盲区范围变大。随着自发光交通标志设置高度的增大,照明范围变大。随着自发光交通标志尺寸的不断增大,最大照度的值不断增加,但增加的速度在逐渐减缓。UC-win/Road软件能够有效地模拟自发光交通标志的夜间引导效果,实现自发光交通标志的夜间引导效果的可视化检验。

On the basis of the characteristics of self-luminous materials commonly used at present,rare-earth materials are selected.Then different self-luminous traffic signs were designed according to their different application scenarios.The roadway illumination model for self-luminous traffic signs on rural highway was developed based on TracePro software.Then the influence of layout parameters,such as vertical spacing,height and dimension,of self-luminous traffic signs on night guidance for rural highway were investigated.By using the driving simulation software UC-win/Road,the simulation of proposed schemes of self-illuminated traffic signs were conducted,so as to verify the feasibility of the proposed scheme and put forward optimization measures.The results show that rare-earth material is an excellent self-luminous material at present with higher brightness and longer luminous time.The maximum illuminance increases with increasing luminous flux.The blind spot scope increases with increasing vertical spacing.The illumination zone increases with increasing height of traffic signs.The maximum illuminance increases with increasing traffic signs dimensions,but has a lowered increase rate.UC-win/Road can effectively simulate the guidance effect of self-luminous traffic signs and very the guidance effect at night.