Tunnel Lighting Based On Intermediate Vision Study On Optimal Control Of Energy Conservation

At this stage,China's expressway construction is in the process of rapid development.The number of expressway tunnels is also increasing year by year,and the road network is more and more perfect.Highway tunnels are widely used in highway construction because of their advantages of overcoming harsh terrain and shortening highway mileage.As the number of road tunnels increases,the energy consumption of tunnel operations increases.Among them,tunnel lighting system is one of the most important expenses,and highway tunnel lighting often has excessive lighting,which wastes power and increases tunnel operating costs.It also affects driving safety.Therefore,it is of great significance and value to study how to achieve energy conservation as much as possible without affecting the driver's safe driving.(1)Energy-saving analysis for tunnel luminaires.Firstly,the characteristics of the common lamps in the tunnel are analyzed.Then the difference between the high-pressure sodium lamps of the tunnel lamps and the emerging LED lamps used in the current stage is compared,and the economic benefits of using two different lamps under the same conditions are analyzed.Then the tunnel is analyzed.Different control methods are used to analyze the principle of backlighting,explain its advantages in tunnels,and analyze the illumination angle.(2)The problem that Ming Vision is not suitable for the middle section of the tunnel.Firstly,the differences of visual characteristics caused by the special structure of the tunnel are analyzed,and the concept of intermediate vision is introduced.Several common intermediate vision models are analyzed.Then,based on the MES2 model,the intermediate vision and the visual vision are obtained through mathematical derivation.Optimized mathematical model.Finally,the tunnel model was built and simulated using DIAlux lighting design software.(3)This chapter firstly segments the tunnel according to the rules,then designs the tunnel lighting system and performs hierarchical control,including three levels of control of the main controller,dimming controller and LED controller.At the same time,RS485 and DALI are selected as the communication methods between the levels.Four parameters of visibility,vehicle speed,traffic flow and external brightness are used as the input parameters of the hybrid particle swarm optimization neural network control algorithm.The output power of the illumination source is calculated by the algorithm.Finally,the energy control effect of thetraditional control algorithm is compared with the algorithm control method.(4)Design and discuss the control unit in the system.Firstly,the system architecture is built.Then,the main controller completes the reasonable selection and determination of the acquisition device,and implements the corresponding selection work and corresponding circuit design including the main control chip and the communication module.For the dimming controller,the main control chip and the communication module are mainly used,and the corresponding selection work and the matching circuit design are carried out.Finally,the LED controller is mainly for the DALI signal conversion module and the LED drive power module.