Road Illumination Colorimetric Study Of Driver Visual Fatigue In Intermediate Vision

In this paper,I mainly study colorimetric of road lighting on driver's visual fatigue.Starting from the driver's visual fatigue causes,through the ergonomics theory to analyze the influencing mechanism of visual fatigue factor of the driver,I study the effect of light on the visual fatigue of the driver in the low light position from the dynamic visual characteristics,mesopic vision theory,the peripheral vision features and non-visual biological effect and do analysis of experiments,using the results of optimization of the lighting design guidance.The thesis is divided into six parts: the first part discusses the background and significance of the research,and then draws current researches that the influence of road lighting on the driver's visual fatigue.In the second part,based on ergonomics theory,this paper discusses the influence mechanism of visual fatigue factors on the driver,and puts forward the precondition of visual fatigue.The third part discusses the problem of the researches which are about the effect of light of color on visual fatigue of divers under stationary state.And through the study of visual characteristics under dynamic state,I do some analysis about influence factors of light color and color variation frequency on driver's vision in the state of high speed.In the fourth part,combined with road lighting environment,I study visual characteristics under mesopic vision around the peripheral vision and put forward a comprehensive analysis of the mesopic characteristics and peripheral vision,nonvisual biological effect of visual impact to the driver.Based on the comprehensive analysis,I study the effect of color changes on visual characteristics in the high speed under the peripheral vision.In the fifth part,through visual fatigue test method based on the flicker fusion frequency,this paper researches on three kinds of source spectrum on high speed in the driver visual fatigue degree of influence under the simulation of high speed driving environment in the dark environment.By comparison,spectrum of blue light can effectively retard visual fatigue.At the same time this part studies effect on visual fatigue under the different periodic of light color.Through the contrast experiment of five groups of different visual periodic under the high speed driving,it conclude that it can effectively retard visual fatigue under the environment which color of light changes every 2.25 kilometers.The light color design of low light level road lighting is considered from two aspects of light color and cycle frequency.The last part is the summary and prospect of the research.Because of the limitations of the conditions,the experiments are relatively rough.I hope subsequent researchers have more comparative studies in spectrum selection and frequency setting,so that further researches can be done about the color change and cycle frequency which effect on visual fatigue.And then the road lighting can be designed to achieve better inhibition of visual fatigue.