Research On Improvement Of Tunnel Entrance Lighting Method Based On Safety And Energy Saving

With the increase of China's economic strength and the rapid development of highway transportation construction,highway tunnel have become an important part in western regions such as hilly areas.However,the traffic safety problems of tunnel entrances and exits and the seriousness of lighting energy consumption are increasing day by day.How to improve the traffic safety of tunnel entrances and exits on the basis of saving energy consumption is an urgent problem to be solved.Through the optimization research on the lighting system of the tunnel entrance section,the goal of improving the uniformity of road illumination is to meet the requirements of intelligence and energy saving,and to ensure the driver's good driving vision.Through the research on the mechanism of the influence of highway tunnel light environment quality,the lighting system control method and lighting system lighting parameters are analyzed,It can be concluded that the improvement of the uniformity of road illumination can effectively alleviate the "zebra phenomenon" of the road surface and improve the factors affecting the safe driving of the driver such as glare.Taking the potential risk factors existing in the tunnel entrance section as a breakthrough,the characteristics of the tunnel lighting,the driver's psychological and physiological changes,the underestimation of driving speed,and the relationship between speed and reaction time are analyzed,and the common four lighting methods are simulated to analyze the influence of the lighting parameters on energy saving.Three different lighting source combination lighting schemes are proposed,namely LED lamp and high pressure sodium lamp combination,LED lamp and fluorescent lamp combination,high pressure sodium lamp and fluorescent lamp three lamp schemes.Using the lighting software DIALux to simulate the tunnel entrance section illumination of three hybrid luminaire combinations,A preliminary understanding of the tunnel illumination brightness effect with 3D illumination renderings and illuminance pseudo-color maps.Accurately calculate the illumination data of each point in the illumination area and the uniformity of the road illumination,and compare the LED single lamp lighting scheme with the three lighting schemes.Finally,Take the ZhangZhuo Expressway FenShuiLing Tunnel as an example,by comparing the total uniformity of the road illumination and the uniformity of the longitudinal illumination of the midline of the three hybrid luminaire combinations and the LED single lamp,It is obtained that the average illuminance of the LED single lamp is the highest under the same power,but the uniformity of the road illumination is low.The combination of LED and fluorescent lamps is ideal for the average illumination and road uniformity of the tunnel entrance section.,the combination of high pressure sodium lamp and fluorescent lamp has a good effect in the middle of the tunnel,and studies the economic rationality to obtain the optimal solution.