隧道横向均匀照明控制策略研究

Research on Tunnel Transverse Homogenizing Lighting Control

为了解决当前隧道照明中存在的同截面内照度突变、能源利用率低等问题,设计了一种隧道横向均匀照明的自动控制策略。该策略根据入口亮度、车流量、车速等分析得隧道内各路段平均照度:调整各光源入射角度与降低光通量交替进行保证路面在重叠面积最小的基础上全覆盖;基于全覆盖利用试探法继续调整入射角度,使无效照明面积占比最小,从而实现隧道横向路面照明的均匀化调控。该策略对于外界灯光变化的自适应性强,具备实时调光功能,实现了按需照明,减少了光照重叠面积过多引起的能源浪费,并降低驾驶员行车过程中光线明暗交替产生的眩晕概率。

At present,there are some problems in tunnel lighting,such as sudden change of illumination in the same section and low energy utilization rate.In order to settle such problems,this paper proposed an automatic control strategy about homogenizing tunnel transverse lighting.The strategy gained the average illumination though analyzing the entrance brightness,traffic and speed:adjust the incident angle of each light source and reduce the luminous flux alternately to ensure that the road surface has been covered completely based on the minimum overlapping area.It used backtracking method to adjust the angle continuously to minimize the proportion of invalid lighting area as well as to homogenize the transverse lighting.The strategy has strong adaptability to the change of external light and real-time dimming function.It also reduces the energy waste and the probability of vertigo caused by light and shade alternation during drive.