Lighting Design Of Train Passenger Cabin Based On Visual Simulation

The cabin lighting is of great significance to creation of beautiful space,improvement of service quality and enhancement of passenger comfort and satisfaction,which is an important part of the train interior environment.The cabin lighting in the train design is more unique and complex than the interior lighting of architecture,civil aviation,automobiles and ships.At present,the method of the cabin lighting in the train is mainly based on the subjective experience,which is lack of scientific quantitative evaluation method on the glare that affects passenger visual comfort and natural lighting in the cabin.In terms of impact factors,only factors related to illumination(such as illumination and uniformity of illumination)are considered.Therefore,this paper proposes a method based on visual simulation to solve the design problem of train cabin lighting from the perspective of passenger travel safety,ride comfort and high-quality service demand.The main work of this thesis is as follows.(1)Based on the in-depth analysis of the relationship between lighting and passenger behavior,psychological and physiological characteristics,combined with the lighting standards related to trains at home and abroad,the lighting design demands of cabin space are proposed from the perspective of passengers' visual satisfaction and lighting comfort.It can provide reference for indoor lighting design of rail transit trains.(2)A method for evaluating the light environment of the passenger cabin based on visual simulation is proposed.Taking the second-class passenger cabin of CRH380B EMU train as a research object,an equal proportion of the optical simulation model of the passenger cabin is established in the CATIA/SPEOS simulation environment.The evaluation and analysis of the lighting environment for the passenger cabin based on the visual lighting simulation is done,then the improvement measures are proposed.(3)In order to effectively solve the problem of control and quantitative evaluation of the discomfort glare in the passenger cabin,a calculation and evaluation method of discomfort glare in the passenger cabin is established.Through a visual simulation experiment,the three main factors affecting the discomfort glare in the passenger cabin,that is,the arrangement forms of lamps,the installation spacing and the size of the luminous surface,are studied systematically and thoroughly.It is found that the arrangement forms of lamps have a significant influence on the glare of the passenger cabin,and then the layout optimization of lamps is discussed.(4)In the natural lighting design of the train,in order to study the influence of the side window design on the natural lighting of the passenger cabin,a calculation and evaluation method for natural lighting of the train passenger cabin is established.Taking the daylight factor and the uniformity ratio of daylighting as the evaluation indexes,the influence of the ratio of glazing to floor area of side windows,the height of windowsill,and the light transmittance of glass material on the natural lighting in the train passenger cabin is studied in detail through the simulation experiment.Based on the statistical conclusions found in this paper,the reliability of the simulation design method is analyzed by selecting the optimal design scheme of the side window.