Research On Road Traffic Accident Data Standardization System Based On Site Map

In the work of accident identification,Crashview system,as the only software that meets national standards for road traffic accident simulation and reproduction research,has been favored by accident identification personnel.Over the years,the system function and structural design have been continuously optimized,but the promotion of its use has not met the ideal requirements.The main reason for this is that on-site survey data cannot be directly applied to the Crashview system for accident simulation and reproduction.Based on this,this article conducts a research on extracting input data from the Crashview system in the field map without affecting the on-site investigation work,and develops a standardized system for road traffic accident data.Users only need to input the data information in the field map in sequence according to the system design process,which can meet the data requirements for accident simulation and reproduction.The research content is summarized as follows:Firstly,establish a process based extraction model for field map data information,and establish a conversion model for vehicle left front wheel position information and angle information before and after the accident based on the interaction between the input data of the Crashview system and field map data information.Based on the Crashview system,the data standardization system focuses on the combination of onsite survey data information and data required for accident identification work.The data information provided by the on-site map is used as the input data source for the system,and is divided into two categories: road information and accident information.Programmatic data information extraction is performed,which serves as a reference for system interface design.The data standardization system establishes a conversion model for the position data of the left front wheel of the vehicle before and after the accident under the conditions of comprehensive positioning method and rectangular coordinate positioning method based on different road,different baseline,different reference point,and different wheel positioning data in accordance with different positioning methods of on-site investigation,and establishes a vehicle body angle acquisition model based on the position information.Secondly,the system database is designed based on the E-R model.To meet the requirements of system performance,storage,and scalability,the Base table and the Addition table are constructed respectively.Establish a source database to manage onsite survey data information,establish a target database to make the output data of the data standardization system the input data of the Crashview system,and achieve a seamless connection between the data standardization system and the Crashview system.Finally,through MFC programming on the Visual C++platform,a standardized system for road traffic accident data is developed,enabling on-site investigation data information to be directly applied to the Crashview system for accident simulation and reproduction.Finally,through example verification,a data standardization system designed based on good human-computer interaction principles can more succinctly and conveniently extract and convert calculated data from on-site survey data information,further enhancing the practicality of the Crashview system and reducing operational difficulties.