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Construction method and construction system of traffic flow model

A technology of traffic flow model and construction method, which is applied in traffic control system, traffic control system of road vehicles, traffic flow detection, etc. It can solve the problems that are difficult to realize, and achieve the effect of reducing the difficulty of construction

Active Publication Date: 2020-01-24
SAIC MOTOR
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Problems solved by technology

Therefore, a test case-by-test approach to testing autonomous driving functions will be very difficult to implement

Method used

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  • Construction method and construction system of traffic flow model
  • Construction method and construction system of traffic flow model
  • Construction method and construction system of traffic flow model

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Embodiment Construction

[0054] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0055] The embodiment of the present application provides a method for constructing a traffic flow model, such as figure 1 shown, including:

[0056] S101: Taking the motor vehicle as the center, sequentially divide the areas from near to far from the motor vehicle into 3-dimensional areas, 2-dimensional areas, quasi-2-dimensional areas, 1-dimensional areas and 0-dimensional areas;

[0057] S102: Establish a relationship model based on traffic experience in the 0-dimensional area; ...

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Abstract

The invention discloses a construction method and a construction system of a traffic flow model. According to the construction method of the traffic flow model, traffic flow models and vehicle modelswith different dimensions and scales are coupled; the processing of the consistency of boundary conditions at the junctions of the traffic flow models of all dimensions is adopted, and the data continuity of the traffic flow models of different dimensions and different scales is achieved, so that the whole traffic flow model describes a complete traffic flow. The closer the distance to the motor vehicle is, the higher the dimension of the traffic flow model is, the more detailed the model parameters and variables are, and the traffic flow model is simplified from the dimension, so that the purpose of considering the accuracy and the calculation efficiency of the simulated traffic flow model is achieved.

Description

technical field [0001] The present application relates to the technical field of vehicle engineering, and more specifically, to a method and system for constructing a traffic flow model. Background technique [0002] With the continuous development of vehicle engineering technology, various driving assistance functions of motor vehicles are constantly emerging, among which, the function of autonomous vehicles (Self-driving automobile) has gradually become one of the important research and development directions of researchers. [0003] Autonomous driving features can significantly improve the safety, comfort and economy of cars. However, due to the complex and changeable actual traffic conditions, how to test and verify the comprehensive performance of autonomous driving in the interactive environment of public roads is an important and unresolved task. [0004] In a dense urban traffic environment, under actual driving conditions, the autonomous driving system under test w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/26G08G1/01
CPCG06Q10/067G06Q50/26G08G1/0125Y02T10/40
Inventor 罗悦齐王震张嵩张钊
Owner SAIC MOTOR
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