| In recent years,tunnel construction along with the urbanization process and the development of highway and railway cause,followed by the large scale of lighting system operation and maintenance costs,tunnel lighting safety and energy saving contradiction is more and more obvious.In this paper,diffuse reflection material is taken as the research object,and energy storage reflective material,ceramic tile and cement mortar are taken as three main comparative research materials,through studying the characteristics of the human eye vision,as well as the main index in the visual effect,influence factors and research methods,analysis of the diffuse reflection material auxiliary tunnel visual effect evaluation method of energy saving lighting,diffuse material optical properties of the study,through experimental analysis diffuse reflection material change rule the visual effect of auxiliary tunnel lighting,set up relative efficiency model of diffuse reflection material and visual effect,from the actual application research on tunnel,puts forward the proposal that is energy saving model of iffuse reflection material for highway tunnel lighting.The main research conclusions are as follows:1 From the perspective of visual field perception,it is proposed that the auxiliary effect of diffuse reflection material of tunnel side wall should be regarded as an influencing factor in the visual field perception,rather than a single evaluation factor.The evaluation of the visual efficacy of the tunnel energy saving lighting assisted by diffuse reflection material is based on the safety index and visual efficacy,including the comprehensive evaluation index of energy saving and comfort.Any energy saving or comfort index should be evaluated based on the safety index.2 With three kind of wall material auxiliary tunnel lighting small target visibility contrast experiments,through the analysis of the result:the surface brightness and a small target size,the small target visibility value increases with diffuse reflectivity material and improve,along with the road surface and increasing average brightness increased,with the increase with the increase of the size of small target.Under the environment of reflective material auxiliary lighting,the visibility of small targets increased most significantly.Compared with cement mortar and ceramic tile,the boundary effect that the increase of visibility of small targets slows down with the increase of average brightness of road surface is smaller and the improvement of tunnel lighting quality is more stable.? Three kinds of sidewall materials were used to assist tunnel lighting to carry out the experimental study on the comparison of reaction time.Through the result analysis,it was found that under the condition of the same background brightness,the reaction time increased with the increase of the eccentricity Angle of the visual indicator.Under the condition of eccentricity Angle of the same visual scale,the reaction time decreases with the increase of background brightness and the increase of reflectivity of the side wall material.Compared with cement mortar and ceramic tile,when the reflective material is the side wall,the total value added of the reaction time is relatively small with the increase of the eccentricity Angle of the visual indicator.Compared with the three influencing factors of eccentricity Angle,background brightness and reflectivity of sidewall material,the increased reflectivity of sidewall material has a more obvious effect on reaction time,and increasing the reflectivity of sidewall diffuse reflection material is conducive to improving the tunnel lighting visual efficiency and driving safety.?Through the analysis of the small target visibility of reflectivity value and its corresponding influence law of value,as well as the reflectivity value and the influence law of the response time of the corresponding impairment,established a diffuse material auxiliary tunnel under the illumination of reflectivity and visual efficacy between two independent relative efficiency model,namely the reflectivity and the relative efficiency of small target visibility model and relative efficiency model of reflectivity and response time.The relationship between the reflectivity of diffuse reflectance and the relative efficiency of visual efficiency is revealed.Both models show that the relative efficiency of visual efficacy increases with the increase of reflectance increment.?Based on the solid tunnel and the model tunnel,the energy saving mode of tunnel lighting assisted by diffuse reflection material is proposed.The energy saving model of tunnel lighting assisted by diffuse reflective materials was studied from three aspects of lamp spacing,material height and traffic safety.Through the analysis of the influence of lamp spacing and small target visibility,the STV value of small target visibility decreases gradually with the increase of lamp spacing.Taking the left tunnel of zhenwushan tunnel as an example,by improving the reflectivity of diffuse reflective material on the side wall,the spacing between lamps can be increased and the energy consumption of electricity can be reduced.The increase of reflectivity by 0.15 can save about 438,000 yuan of annual electricity cost.According to the test analysis of reflective material layout height and reaction time,the luminance energy consumption decreases with the increase of reflective material layout height based on the same visual effect.For the basic section of the tunnel,considering the boundary effect of the improvement of the visual efficacy index by the unit height of diffuse reflection material,as well as the economy of engineering application,it is recommended to choose 4m for the height of reflective storage material. |
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