Research On Vehicle Collision Avoidance Safety Distance Algorithm Based On Driver Characteristics

With the growth of the number of drivers and vehicle ownership,frequent traffic accidents are one of the negative effects of the development of the automobile industry.How to reduce the probability of traffic accidents and ensure traffic safety is an important issue to be solved urgently.Therefore,the automotive active collision avoidance safety system has attracted wide attention.Vehicle active collision avoidance safety system can effectively reduce the probability of occurrence of traffic accidents,and at the same time ensure that vehicle driving has certain smoothness.By studying the current research status of automobile anti-collision active safety system,it is found that in the safety distance model of automobile active safety system,the factors of different reaction time of different drivers are not introduced.This factor will play a great role in the safety distance model.Therefore,the driver characteristic factor is added to the vehicle collision avoidance safety distance model as the research direction.Firstly,the research background and research significance of auto collision avoidance active safety system are introduced.By consulting the documents,the current research status of automotive collision avoidance active safety system is mastered.Based on the research status,the direction and content of the research will be put forward.Then,the influence of the driver's characteristics in the vehicle active safety system is analyzed and compared.The characteristics of the driver were studied through consulting data.The influence of the driver's characteristics on the driver's driving process is analyzed.Through comparative analysis,the psychological characteristics and physiological characteristics of drivers were studied,and the importance of driving experience was also studied.In the driver's characteristics,the characteristic factors of driving response time are mainly analyzed.By analyzing and comparing the existing safety distance models,it is found that these models do not involve different drivers with different response times.Therefore,an improved safety distance model is proposed on the basis of the existing model,and the driver reaction time factor is introduced into the safety distance model,that is,a model of the driver reaction time is added to the model.In the driver response time calculation model,three eigenvalues are introduced,namely driver age,driver mileage and fatigue level.A precise driver response time is obtained through calculation.The safety distance model and reaction time model are simulated,and the simulation results are compared and analyzed.Finally,the conclusion is drawn that the calculated safety distance is more in line with the driver's own characteristics by comparing the simulation results and adding different drivers' reaction time.The actual error of that calculate safe distance is smaller and more in line with the drive habits of the driver than by setting an average of the reaction time to summarize the total driver reaction time.