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Vehicle driving state evaluating method based on road-switching behavior detection

A vehicle driving and state evaluation technology, applied in the field of automotive active safety, can solve problems such as driving under the line, the vehicle cannot maintain a normal driving state, and the vehicle is unstable, and achieve the effect of suppressing image noise

Inactive Publication Date: 2013-06-05
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But in fact, due to the variability of the vehicle driving environment, only the warning of lane departure cannot meet the needs of vehicle assisted driving.
[0006] During long-term driving, the driver may be unstable in the control of the vehicle due to objective reasons such as vehicle problems or driver fatigue. In the lane, there will generally be a situation of driving under the line for a long time

Method used

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  • Vehicle driving state evaluating method based on road-switching behavior detection
  • Vehicle driving state evaluating method based on road-switching behavior detection
  • Vehicle driving state evaluating method based on road-switching behavior detection

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Embodiment Construction

[0027] The vehicle driving state evaluation method based on lane-cutting behavior detection of the present invention comprises the following steps:

[0028] Step 1: Install a camera behind the front windshield or on the top of the vehicle to capture images of the road ahead and obtain the internal and external parameters of the camera;

[0029] Step 2: Get the road ahead information through the camera;

[0030] Step 3: Detect the front lane marking line;

[0031] Step 4: According to the obtained lane line information, check whether the vehicle is in the state of pressing the line, if it is in the state of pressing the line, go to step 5; otherwise, go back to step 2;

[0032] Step 5: When the line is pressed, enter the vehicle status tracking cycle and read the image;

[0033] Step 6: Determine whether the vehicle line pressing state is over, if it is still in the line pressing state, go to step 7; if it is over, go to step 8;

[0034] Step 7: In the state of pressing the ...

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Abstract

The invention discloses a vehicle driving state evaluating method based on road-switching behavior detection, comprising the steps of: carrying out video acquisition and real-time processing on front road conditions by using a camera so as to achieve purposes of monitoring dangerous driving behaviors of road-switching, long-time line-pressing driving and the like of a vehicle and immediately warn, i.e. arranging a camera facing the front direction inside the vehicle to obtain front road condition information; detecting and tracking a lane line; judging the current position state of the vehicle, if the vehicle is in a line-pressing state, carrying out state tracking to judge whether the vehicle is subjected to lane-switching operation or not; if the vehicle is subjected to the lane-switching operation, judging the behavior danger level of the vehicle according to the lane-switching times within a recent period of time; and if the total time in the line-pressing state within the recent period of time is m percent, making an alarm of the long-time line-pressing driving. For the vehicle active safe driving, by adopting a computer monocular vision and image processing technology, the invention has characteristics of simple system configuration, low cost, good real-time and capability of being applied in various climatic environments in the daytime and at night.

Description

technical field [0001] The invention belongs to the field of automobile active safety, in particular to a method for judging the current driving state of a vehicle based on detection of lane-cutting behavior. Background technique [0002] Automotive active safety technology is a new trend in the development of current automotive safety technology. Unlike the previous passive safety technology that focused on occupant protection after a collision, active safety technology focuses on risk prevention, that is, active safety technology helps the driver control the driving of the vehicle. situation, to prevent traffic accidents in advance. [0003] The basic technical route of vehicle active safety technology is: use various sensors to improve the driver's sensing ability and obtain relevant environmental information inside and outside the vehicle, and act on functional components such as speakers, brakes, and signal lights according to computer processing and strategic planning ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W30/12B60W40/09B60W40/10
Inventor 赵春霞张浩峰李旻先王超
Owner NANJING UNIV OF SCI & TECH
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