Research On Lighting Of Interior Zone Of Long Highway Tunnel Based On Drivering Fatigue

As a mountainous country with about 75% of the country’s territory being mountainous or hilly,tunnel has been widely valued because of its advantages of shortening traffic time,less interference to the ecological environment and all-weather traffic.As a special traffic structure,the highway tunnel has a relatively closed space environment because of its limited space height,long longitudinal depth,and smaller space width than the conventional highway.The discomfort of drivers is higher than that of the ordinary highway.With the increase of tunnel length,the driver’s time in the tunnel is gradually increasing.Driving in the tunnel with single road condition and poor lighting quality for a long time is more likely to cause adverse effects on the driver’s physiological and psychological feelings.In the middle section of the tunnel,all the light depends on the current lighting environment in the tunnel.In addition to the visual effect of the driver,the lighting environment in the tunnel also has a long-term impact on the physiological changes of the driver.The poor driving environment and long-term driving process in the comprehensive tunnel are easy to cause driving fatigue.Because of the monotonous driving environment or long-term driving with super intensity,the physiological and psychological functions of drivers will decline,become stiff and slow,the comprehensive system of human body will be out of balance,and the reception,processing and implementation of environmental stimulation will decline,which will lead to traffic safety hazards.Based on the physiological and psychological indexes that affect driving fatigue,this paper obtains the influence rule of lighting environment on driving fatigue,and carries out experimental research on the rule in order to alleviate the driver’s driving fatigue and provide reference for safe driving in the highway super long tunnel.In this paper,by combing and summarizing related theories,the key research elements in the lighting of the middle section of a long tunnel are proposed for driver fatigue.Next,conduct a field survey to understand the basic conditions of the lighting environment in the extra-long tunnel;analyze the effects of different research elements on the driver’s fatigue in the lighting environment through real driving experiments.Collect the physiological and psychological index data that reflects the driver’s fatigue during the experiment,and combine the common features of the psychological and physiological index changes and analyze them to determine the fatigue change law of the driver in the different lighting environments of the long tunnel.On this basis,further experiments are conducted in the laboratory to verify the rules obtained from the actual measurement according to the research elements;the measures to improve fatigue by changing the research elements are proposed,and the changes in physiological and psychological indicators are verified.As a reference,measures to improve the light environment construction in the middle section of a long tunnel based on driver fatigue are proposed.This thesis begins with the following seven chapters:Chapter 1 expounds the necessity of research and the problems to be solved through the discussion of research background,definition of related concepts,research trends,research content and methods.Chapter 2 summarizes the research objects and research elements.First,by sorting out the current domestic tunnel lighting standards,analyzing the mechanism and purpose,and extracting the research elements on the relevant tunnel lighting indicators in this paper.Secondly,based on the influence of the light environment in the tunnel on the driver’s visual effects and non-visual effects,the relevant research elements of the relevant light sources in this paper are extracted and summarized.Next,comb the relevant theories about driver fatigue,and understand its physiological mechanism,influencing factors,and evaluation indicators.Finally,the research factors affecting driver fatigue are summarized into two categories,the lighting indicators and light source-related parameters in the tunnel.There are eight main research points,and the evaluation indicators are classified into two categories: physiological indicators and psychological indicators.The third and fourth chapters lay the foundation.Chapter 3 is to investigate the current situation of the lighting environment of the tunnel and the analysis of driver evaluation results,investigate the current situation of lighting in the middle section of the long tunnel,and analyze the driver’s fatigue under the current situation.First,the key research objects were selected,and their current status was investigated based on eight research elements.Next,based on the variability of relevant research elements in the tunnel,an experimental scheme is formulated.From the two types of evaluation indicators,the physiological indicators use HRV in the ECG signals,and the psychological indicators use facial information recognition systems and subjective evaluation scales to conduct experiments.The effects of relevant research elements on driver fatigue are analyzed to find relevant laws..Finally,the current situation of lighting design of other tunnels and driver fatigue under current conditions are investigated to verify the above conclusions and summarize the lack of research elements in the research elements for reference in Chapter 4 experimental design.Chapter 4 talks about the artificial tunnel lighting experiment.First of all,based on the research results in Chapter 3,the lack of experimental research elements are extracted,and appropriate evaluation indicators are selected for further research.The EEG signal EEG,the EOG signal EEG,and the fatigue evaluation scale were used for the psychological indicators.Secondly,according to the selected research elements,design experimental equipment and select appropriate experimental equipment.Next,design an experiment to verify the results of the lighting environment on driving fatigue obtained in Chapter 3,and conduct further experiments on the research elements to improve driving fatigue.Finally,the obtained experimental index data is pre-processed to pave the way for the conclusion and analysis in Chapter 5.Chapter 5 analyzes the experimental data of Chapter 4.First,the physiological and psychological data obtained under constant lighting conditions were used to further verify the effects of lighting indicators and light source parameters on driver fatigue.Next,the results obtained from the dynamic experiments are compared,and the effects of the research elements on driving fatigue are assisted.Based on this,the effect of improving driving fatigue is verified.Finally,based on experiments,the influence law of research elements on fatigue is obtained,and the effect of improving the fatigue on the lighting environment changes of the research elements is summarized.Chapter 6 concludes,integrates the experimental results of Chapters 3 and 5,summarizes the main research conclusions and main research results of the paper,and puts forward the limitations of the research and the prospect of future research directions.