Research On Intelligent Dimming Control Technology For Expressway Tunnel

At present,highway tunnel has become an important part of highway in China.With the increase and growth of highway tunnels in mountainous areas,the traffic safety situation of tunnels is becoming more and more serious,and the contradiction between tunnel safety and energy saving is more and more prominent.The "black hole effect" and "white hole effect" caused by the large difference of light environment at the entrance and exit of the tunnel cause the driver to have visual lag,which affects the driver's cognition of the road and traffic conditions and the safety and comfort of driving.The traditional tunnel dimming only stays at the level of changing the brightness in the tunnel,and the control of color temperature is still in the stage of theoretical research.The control strategy and technology of tunnel dimming are lack of objective,safe and energy-saving systematic research,so they often can not meet the driver's safety recognition needs and reduce the safety service level of tunnel operation.The traditional tunnel dimming only stays at the level of changing the brightness in different periods of time.The control strategy and technology of tunnel dimming are lack of systematic research on safety and energy saving in high altitude area,and lack of intelligent research on tunnel dimming control.background meaning can be simplified appropriately.Based on this situation,we would be do some research to try change the light control system which belong to the tunnel in the past times.The main contents of this thesis are as follows(1)In view of the shortcomings of the current lighting control system,in order to improve the lighting quality of the expressway tunnel entrance and exit,reduce the"white hole" and "black hole" effect of the tunnel entrance and exit,and realize the intelligent dimming of the tunnel,this paper analyzes the factors affecting the tunnel entrance and exit lighting,and focuses on the influence of color changing temperature lighting on the tunnel driving safety.(2)The structure,function and system configuration of lighting control system for high altitude area are studied.The intelligent dimming control model of artificial lighting at tunnel entrance based on the variation of brightness and color temperature of natural light environment outside highway tunnel is discussed and established;(3)Based on the analysis of existing optimization algorithms,a neural network algorithm for intelligent dimming of tunnel portal lighting is proposed;(4)Starting from the intelligent control system,the neural network algorithm is applied to the lighting control,and the intelligent lighting control system is designed and developed.The intelligent control of tunnel entrance and exit lighting is realized by an optimization algorithm,and it is applied to practical engineering.[the main research work of the paper should be listed according to the items,with clear organization and substantial content.The development and implementation of this paper not only contribute to the improvement of intelligent control level of tunnel lighting,but also have important theoretical and practical significance to improve the quality of artificial lighting,reduce lighting energy consumption and operation cost,and create a safe and comfortable driving environment.