Intelligent vehicle path search method and system based on road risk assessment

A technology of route search and smart car, applied in the directions of road network navigators, measuring devices, instruments, etc., can solve the problem of inability to realize route search, and achieve the effect of overcoming failure

Active Publication Date: 2015-09-09
TSINGHUA UNIV
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Problems solved by technology

[0004] The purpose of the present invention is to provide a smart car route search method and system based on road risk assessment, which can sol

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  • Intelligent vehicle path search method and system based on road risk assessment
  • Intelligent vehicle path search method and system based on road risk assessment
  • Intelligent vehicle path search method and system based on road risk assessment

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[0019] In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are the present invention. Invented some embodiments, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0020] Such as figure 1 As shown, this embodiment discloses a smart car path search method based on road risk assessment (the search method based on the risk assessment, SRA for short), which includes the following steps:

[0021] S1. Model the road environment where the vehicle is driving into a two-dimensional model composed of multiple square g...

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Abstract

The invention discloses an intelligent vehicle path search method and system based on road risk assessment and can solve the problem that an existing intelligent vehicle path search method cannot achieve path search under many circumstances or cannot achieve accurate path search. The method includes the steps of S1, modeling a road where a vehicle travels into a two-dimensional model formed by a plurality of square grids with identical side length; S2, under the principle that grid risk assessment value is minimum, using a heuristic search algorithm to search an optimal grid path from the grid where the central position of the head of the vehicle is located to the destination area grid, wherein the grid assessment value is obtained by calculating environmental information sensed by a vehicle sensor.

Description

technical field [0001] The invention relates to the technical field of intelligent vehicle path planning, in particular to a method and system for intelligent vehicle path search based on road risk assessment. Background technique [0002] Intelligent vehicle path search refers to the mobile entity looking for a driving path from the initial state to the target state in the environment modeling map according to a certain index (such as distance, time, energy, etc.). Path search includes real-time pathfinding and non-real-time pathfinding. Real-time wayfinding refers to the continuous recalculation and correction of the pathfinding results as the real-time road traffic information changes during the driving process. It depends on the frequency of real-time road traffic information collection and the length of the driving path. Factors generally require multiple calculations. The non-real-time wayfinding algorithm only performs a search at the initial moment, does not use re...

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Application Information

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IPC IPC(8): G01C21/34
CPCG01C21/3446
Inventor 赵建辉张新钰贾鹏韩威殷嘉伦刘玉超郑思仪安利峰李国朋高洪波
Owner TSINGHUA UNIV
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