Tunnel light color effect analysis of the drivers vision system

The light of the light source color contains color and color temperature. The visual effect is people with the help of a visual organ ability to accomplish a certain visual task, usually with the speed and precision of finish the homework to assess visual effect, in addition to human factors, is also closely related with lighting, within a certain range, with the improvement of the lighting, the visual effect will be a significant improvement. At present, the European Union [ 1] And CIE [ 2 - 3] Tunnel lighting design specifications and standards are only consider the brightness of the tunnel pavement or illuminance level, for the color temperature, color rendering and spectral distribution of inadequate considering the influence of visual effects, resulting in the insufficient evaluation on the quality of tunnel lighting science, traffic safety and energy waste problem. As the equipment function improvement and the development of the research methods, more and more researchers begin to pay close attention to the light source the light color effect on the driver's visual effect [ 4] 。 Liu Yingying etc. [ 5] By reaction time and the pupil experiments, the different color temperature of light source is introduced in the tunnel lighting paragraphs and to the corresponding research, it is concluded that the light source color temperature and the reaction time and the changes of the human eye pupil size, find the right tunnel in the transitional period of lighting light source. Qing-wen zhang, etc. [ 6] By using visual effect, use 'response time measurement system', for the human eye visual effect under different color temperature LED light source, suitable for road lighting of LED light source color temperature value and apply it to practice. Zhong-lin Chen, etc. [ 7] Based on SiChen visual theory and middle theory, studied the high pressure sodium lamp and metal halide lamp under the condition of different brightness of the luminous efficiency, has carried on the experiment, the reaction time of the metal halide lamp is obtained SiChen vision under the road lighting luminous efficiency higher than that of the conclusion of high pressure sodium lamp, the research method is worthy of reference for tunnel lighting. HongWeiPeng etc. [ 8] In the middle of the day vision and visual conditions, selected the five background brightness of 10 normal vision tester, the reaction time test experiment to study the high pressure sodium lamp, metal halide lamp, compact fluorescent lamps and the LED

4 kinds of light source light efficiency. Using the test result of the reaction time, determine the suitability of different light sources in tunnel lighting environment and energy saving. Lu-lu cui etc. [ 9] Study the optical properties of light sources in tunnel lighting and the relationship between the small target visibility, put forward the small target color rendering of visual experimental methods, for the study of the small target visibility of tunnel lighting opened the new way of thinking. Barbur etc. [ 10] Among the photopic vision and scotopic vision and visual effect in the visual changes in the theory, the theory provides a research method in the research of tunnel lighting and certain theoretical basis. Miomir

Kostic etc. [ 11] Using intermediate visual theory, compared the application of HPS in tunnel light source and MH light of different circumstances, points out that although the higher that of HPS, better color apparent also, but the MH light source is more practical and energy-saving, should be advocated in the tunnel lighting use. The author through the experimental study optical properties of light sources in tunnel lighting effect on the driver's visual effect, in order to get the relationship between color and visual effect and the light source color temperature, the relationship between observable color and visual effect. 1 color rendering index influence on drivers' visual effect 1. 1 color rendering index on the experimental study of the influences of the driver's visual experiment through the tunnel lighting light source color rendering index influence on drivers' visual effect. Choose two tunnels for small target recognition experiment, the two tunnels respectively marked tunnel no. 1 and no. 2 tunnel, the no. 1 tunnel light source used for high-pressure sodium lamp ( HPS) , no. 2 tunnel installed the HPS and LED two kinds of light source, the experimental process according to the need to open one of the light source. Two basic properties of light sources in tunnel lighting parameters shown in table 1.

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