Automatic lane change method and system based on vehicle flow analysis

A lane and automatic technology, applied in the field of automatic lane change method and system based on traffic flow analysis, can solve the problems of drivers without safety concept, car accidents, and affecting the starting time of vehicles behind, and achieve the effect of avoiding rear-end collisions

Active Publication Date: 2018-09-04
深圳市新城市规划建筑设计股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially in the area where traffic lights intersect, it is easy to cause traffic congestion. In the process of waiting for a red light in a straight lane, if there are more vehicles waiting in front of the current vehicle, it will directly affect the starting time of the vehicles behind.
The driver cannot observe all the vehicles in front, so he cannot select the appropriate lane change in advance based on the traffic flow information ahead. If the driver suddenly changes lanes when approaching a red light, it is very likely to cause a traffic accident
[0003] In addition, there are many unreliable lane-changing phenomena on the roads, so many rear-end chases or friction accidents have been caused. Most of the traffic accidents are caused by the driver's negligence, and some drivers have no safety concept. I like to change lanes without warning and catch the people next to me by surprise. This kind of behavior that harms others and myself can cause tragic car accidents if I am not careful, so we must strictly control the above phenomena

Method used

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  • Automatic lane change method and system based on vehicle flow analysis
  • Automatic lane change method and system based on vehicle flow analysis
  • Automatic lane change method and system based on vehicle flow analysis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0087] Such as figure 1 As shown, an automatic lane change method based on traffic flow analysis includes the following steps:

[0088] 101: Obtain the image of the left front of the current vehicle and store the image as the first image;

[0089] 102: Obtain an image of the right front of the current vehicle and store the image as a second image;

[0090] 103: Determine whether the current vehicle is in the through lane according to the first image and the second image;

[0091] 104: If yes, extract the lane where the current vehicle is located as the first lane;

[0092] 105: Calculate the number of vehicles in the first lane and in front of the current vehicle according to the first image and the second image, and store the number of vehicles as the first number;

[0093] 106: Judging whether the left side of the first lane is a straight lane;

[0094] 107: If yes, extract the through lane on the left side of the first lane as the second lane;

[0095] 108: Calculate t...

Embodiment 2

[0122] Such as image 3 As shown, judging whether the current vehicle is in the through lane according to the first image and the second image also includes:

[0123] Obtain the driving route of the current vehicle;

[0124] Extract the position of the current vehicle and mark the position as the first position;

[0125] Extracting the position of the turning intersection in the driving route and marking the position as the second position;

[0126] Judging whether the next intersection located in the current vehicle direction is a turning intersection;

[0127] If so, control the current vehicle to change lanes to the turning lane in advance.

[0128] Specifically, the current road traffic pressure is becoming more and more serious, especially during the rush hour, some straight-going drivers will choose to ignore the lane change reminder. Enter the turning lane in advance under the premise of changing lanes. Obtain the driving route of the current vehicle through the GP...

Embodiment 3

[0130] Such as Figure 4As shown, extracting the through lane with the least number of vehicles as the fourth lane also includes:

[0131] Set the preset number, and change lanes when the difference in the number of vehicles between lanes is less than or equal to the preset number;

[0132] Calculate the difference between the number of vehicles in the fourth lane and the first number;

[0133] Determine whether the difference is greater than or equal to the preset quantity;

[0134] If so, control the current vehicle to change lanes to the fourth lane.

[0135] Such as Figure 5 As shown, extracting the through lane with the least number of vehicles as the fourth lane also includes:

[0136] Obtain images in the fourth lane and located on the side and rear of the current vehicle and store the images as the third images;

[0137] Extract the frontmost vehicle in the third image and use it as the rear vehicle;

[0138] Calculate the distance between the following vehicle ...

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Abstract

The invention discloses an automatic lane change method and system based on vehicle flow analysis. The method includes the steps: acquiring an image in left front of a current vehicle, and taking theimage as a first image; acquiring an image in right front of the current vehicle, and taking the image as a second image; taking a lane of the current vehicle as a first lane to perform extraction ifthe current vehicle is on a straight lane; calculating the number of vehicles in the first lane, and taking the number of the vehicles as a first number; taking a straight lane of the left side of thefirst lane as a second lane to perform extraction if the left side of the first lane is a straight lane; calculating the number of vehicles in the second lane, and taking the number of the vehicles as a second number; taking a straight lane of the right side of the first lane as a third lane to perform extraction if the right side of the first lane is a straight lane; calculating the number of vehicles in the third lane, and taking the number of the vehicles as third number; comparing the size of the number of the vehicles; taking the straight lane containing the fewest vehicles as a fourth lane to perform extraction; and controlling the current vehicle to be changed towards the fourth lane.

Description

technical field [0001] The invention relates to the field of automatic driving, in particular to an automatic lane changing method and system thereof based on traffic flow analysis. Background technique [0002] There are a large number of traffic lights on urban roads, and different routes belong to different lanes. The driver chooses the appropriate lane according to the driving route of the vehicle. Reasonable lane changes can effectively shorten the driving time. Especially in areas where traffic lights intersect, it is easy to cause traffic congestion. In the process of waiting for a red light in a straight lane, if there are more vehicles waiting in front of the current vehicle, it will directly affect the starting time of the vehicles behind. The driver cannot observe all the vehicles in front, so he cannot select the appropriate lane change in advance based on the traffic flow information ahead. If the driver suddenly changes lanes when approaching a red light, it is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W30/18
CPCB60W30/18163
Inventor 蔡璟
Owner 深圳市新城市规划建筑设计股份有限公司
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