Research On Light Environment Of Subway Control Center Console

The light environment of the subway control center console has an important effect on the visual tasks of subway dispatchers.When the subway dispatcher performs the dispatching operation,the visual targets are concentrated on large screen,desktop screen and bench surface.This thesis analyzes the light environmental factors that affect the above visual targets,and the effects of large screen vertical illumination,desktop screen brightness and horizontal illumination on visual load are mainly studied.Based on research conclusions,the reference values of the light environment of the subway control center console is proposed.The main work is as follows:(1)Through the investigation of the control center of Beijing subway,task analysis of dispatchers,analysis of the effect of various light environmental factors on the visual function of dispatchers,completed the analysis of the light environment of the subway control center console.Research variables such as large screen vertical illumination,desktop screen brightness,and horizontal surface illumination were determined.(2)The construction of the experimental platform of light environment of the subway control center console was completed.During the construction of the experimental platform,introducing a method based on optical simulation,the optical simulation software SPEOS is used to analyze and filter the designed primary and secondary light experimental schemes.The light environmental layout that filtered by SPEOS can meet the requirements of console glare and large screen illumination uniformity,it also can achieve independent control of primary lighting and secondary lighting.(3)Using the above experimental platform,with large screen vertical illumination,desktop screen brightness and horizontal surface illumination as independent variables,with the performance index,subjective evaluation and blink frequency as the dependent variable,designed an orthogonal experiment for visual search tasks,an experimental research of the console light environment was carried out.(4)Experimental results show that,desktop screen brightness and horizontal surface illumination have a significant effect on the performance index;for subjective evaluation,only the desktop screen brightness has a significant effect on it;for the blink frequency,the three experimental independent variables have significant effects on it.The research conclusions can provide useful reference for the light environment design of the subway control center console.In addition,the research methods and conclusions of the light environnental experiment involving three kinds of visual targets,such as large screen,desktop screen and paper files,provide reference for the study of light environment under multiple visual targets work.