Intelligent overtaking method and system for automobile

A smart, automotive technology, applied to vehicle components, external condition input parameters, control devices, etc., can solve problems such as prone to traffic accidents, achieve the effect of improving overtaking safety and simple operation

Active Publication Date: 2015-05-13
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Overtaking is a relatively common behavior during driving. However, in a short overtaking time, it is difficult for the driver to observ

Method used

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  • Intelligent overtaking method and system for automobile
  • Intelligent overtaking method and system for automobile
  • Intelligent overtaking method and system for automobile

Examples

Experimental program
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Embodiment

[0052] Such as figure 1 As shown, an intelligent overtaking method for a car includes the following steps:

[0053] An intelligent vehicle overtaking method includes the following steps:

[0054] 1) Turn on the overtaking system, the on-board radar obtains the location information of the surrounding vehicles of the vehicle, and selects a fixed point as the origin, the front of the vehicle is the Y axis, and the right of the vehicle is the X axis, establishing a plane coordinate system;

[0055] 2) Judge whether the overtaking conditions are met, if yes, proceed to step 3), if not, then wait for a radar collection period, and then return to step 2) Overtaking conditions include:

[0056] (1) There are no other vehicles within the range of the own vehicle's X-axis range -3~0m and Y-axis range -50~250m;

[0057] (2) The distance between the two vehicles directly in front of the vehicle is greater than or equal to 200m;

[0058] (3) The acceleration of the preceding vehicle to be overtaken i...

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Abstract

The invention relates to an intelligent overtaking method and system for an automobile. The method includes the following steps that firstly, an overtaking system is started, the position information of vehicles around the vehicle is obtained through vehicle-mounted radar, and a planar coordinate system is set up; secondly, whether the overtaking conditions are met or not is judged; thirdly, the forecast running track of the front vehicle to be overtaken is obtained according to an online forecast algorithm; fourthly, the initial overtaking track of the vehicle is generated according to the forecast running track of the front vehicle; fifthly, whether overtaking is over or not is judged according to the position information, obtained in real time. of the front vehicle to be overtaken; sixthly, the position signal of the front vehicle to be overtaken is obtained continuously in real time, the running track is forecasted according to the online forecast algorithm, and the overtaking track of the vehicle is corrected in real time; seventhly, whether the acceleration of the front vehicle to be overtaken exceeds a corresponding threshold value or not is judged; eighthly, whether the value of K is equal to five or not is judged; ninthly, the intelligent overtaking system is shut down. Compared with the prior art, the intelligent overtaking method and system have the advantages that the overtaking safety is achieved, operation is simple, cost is low, and the algorithm is advanced.

Description

Technical field [0001] The invention relates to the field of automobile automatic driving technical devices, and in particular to an automobile intelligent overtaking method and system. Background technique [0002] With the increasing number of automobiles in my country, automobiles have entered thousands of households. While automobiles provide convenience for people's travel, they also contribute to the increasing frequency of automobile traffic accidents. Overtaking is a relatively common behavior during driving. However, in a short overtaking time, it is difficult for the driver to observe the conditions of all surrounding vehicles and predict the trajectory of the vehicle in front, so traffic accidents are prone to occur. If a system can be used to determine whether the preconditions for overtaking are met, and then predict the trajectory of the preceding vehicle, and then form an ideal overtaking path, it will have a great effect on improving the safety of overtaking. Sum...

Claims

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Application Information

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IPC IPC(8): B60W30/00B60W40/04
CPCB60W10/06B60W10/20B60W30/18163B60W2420/52B60W2554/4041B60W2710/0633B60W2710/207
Inventor 张立军吴军朱沛沛
Owner TONGJI UNIV
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