An intelligent miniature vehicle-road coordination system

Abstract

The invention proposes a miniature intelligent vehicle-road coordination system, which is used in the technical field of intelligent transportation. The system includes smart miniature cars and miniature road sand tables. Calculate the size and steering performance parameters of the smart miniature car based on the scaling law, and derive the speed control method of the smart miniature car by introducing dynamic factors; calculate the size of the sand table and road turning radius according to the principle of geometric similarity, and use the relationship between vehicle speed and braking distance The sand table road friction coefficient can be obtained from the relationship; through the intelligent miniature vehicle parameter scaling method and the miniature road sand table parameter scaling calculation method, a miniature intelligent vehicle-road coordination system that can maintain similar physical properties between the model and the real object can be designed, providing intelligent The vehicle-road collaboration technology research provides accurate and reliable physical verification and obtains real simulation data. Reduce costly traffic trials.

Description

technical field [0001] The invention belongs to the technical field of intelligent transportation, and in particular relates to a vehicle-road coordination system based on a scale model. Background technique [0002] At present, in the initial stage of research on the vehicle-road coordination system, the cost of actual scene reconstruction is too high, and the working conditions of the system are complex and changeable. It is difficult to conduct experiments on the traffic scene, and the experiments are also dangerous and difficult to operate. The simulated experimental scene of the scaled-scale vehicle-road coordination system based on the similarity theory can help the traffic system testers to complete the research and analysis of the test correctly, quickly and economically through the test of the scaled model. The use of model tests to predict the traffic characteristics of large-scale original models is of great significance to the research of new intelligent transpor...

AI Technical Summary

Problems solved by technology

[0003] In the existing technology, there are safety risks in the direct application of the new vehicle-road coordination technology to actual traffic for testing, and the testing costs are high or even difficult to operate.

The software simulation test cannot meet various experimental requirements, the authenticity of the data acquisition is poor, and the agreement between the simulated value and the measured value is poor

Existing traffic simulation software vehicle operation depends on the car-following model and road change model, and there is a large deviation between the actual vehicle operating state, and the software simulation is only a functional simulation, and the simulation involving wireless communication and timing cannot be accurate. The mock implementation of

The authenticity of the simulation data acquisition is poor, and the accuracy of the simulation results is low

At present, the scene functions of the traffic experiment sand table test site are not perfect. It mainly realizes information collection and signal control, and does not integrate new vehicle-road coordination technology. The model cars running in the sand table are relatively low in intelligence. requirements

And the common traffic miniature model design is a model that is reduced according to a fixed geometric ratio, and there is little consideration for the similarity of the physical performance of the model

This miniature model cannot realistically simulate the traffic environment

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