Research On Verification And Evaluation System Of Closed Intelligent And Connected Vehicle Test Field

The closed intelligent and connected vehicle test field is a miniature of various typical road scenes such as cities,towns and expressways.Due to the diverse functions of the field,complex components and high density of road network,the factors affecting the construction of the test field are complicated.In addition,the specifications and standards adopted in the domestic intelligent and connected vehicle test field are not consistent,and the test evaluation methods and test scenarios varies greatly.Therefore,according to the characteristics of the test field,it is of great significance to select appropriate indicators and establish a correct evaluation system to scientifically evaluate the reliability of the test field and the rationality of the test effect,for guiding the design and construction of the intelligent and connected vehicle test field.This paper analyzes the division of intelligent networked vehicle test field and the construction status of domestic test demonstration area,compares the test field construction information at home and abroad,and summarizes the function composition and main characteristics of intelligent and connected vehicle test field.This paper analyzes the difference between intelligent and connected vehicle test field and traditional test field from two aspects of test task and field road design,and points out the construction target of intelligent and connected vehicle test field.At the same time,the main influencing factors of test field construction are analyzed to obtain valuable reference for the construction of evaluation system.The necessity of constructing an evaluation system is demonstrated from two aspects: the test demand of intelligent and connected vehicles and the existing problems of the test field.The selection principle and scope of comprehensive evaluation index of intelligent and connected vehicle test field are clarified.On this basis,the comprehensive evaluation indexes of this paper are selected from four aspects based on field road technology,field facility technology,field overall layout and test field reliability.It also has explained the meaning of each index and given evaluation criteria,The comprehensive evaluation system of intelligent and connected vehicle test field is obtained,which consists of 4 first-level indexes and 26 second-level indexes.The weight of evaluation index is determined by Analytic Hierarchy Process and the membership degree of evaluation index is calculated by fuzzy statistics method.The fuzzy comprehensive evaluation model of intelligent networked vehicle test field is established.According to the characteristics of functional areas of domestic test fields and the principle of scene test continuity,four typical scenarios and 18 typical test conditions of expressway,urban road,rural road and special road were divided.In addition,according to the test project combination test scheme recommended by the automatic driving function test procedures of intelligent and connected vehicles and the actual test capability under test conditions,the test events are classified and combined to form a test scene chain to meet the requirements of differentiated testing,thus improving test efficiency.Taking Daan intelligent and connected vehicle test field as an example,parameters were set according to the actual test scene,traffic volume,design speed,test path and other aspects,and Prescan unmanned driving simulation model was used to conduct scene experiment and obtain relevant evaluation index data.Combined with the design document of the test field,the membership degree of the evaluation index is calculated,fuzzy synthesis and comprehensive evaluation are carried out by using the fuzzy comprehensive evaluation model,and improvement measures and optimization suggestions are put forward for the construction scheme of intelligent and connected vehicle test field.