Driver driving state recognition-based lane departure alarming method

A technology for lane departure alarm and driving status, which is applied in the field of intelligent transportation and can solve the problems of frequent alarm prompts and lane departure.

Inactive Publication Date: 2014-02-05
YANGZHOU RUI KONG AUTOMOTIVE ELECTRONICS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current lane departure warning system only sends out warning prompts for lane departure to the driver according to the lane departure situation, and there is a problem of sending out warning prompts too frequently

Method used

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  • Driver driving state recognition-based lane departure alarming method
  • Driver driving state recognition-based lane departure alarming method
  • Driver driving state recognition-based lane departure alarming method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0052] Attached below figure 1 , the present invention is further described:

[0053] 1. Obtain the driver's control of the vehicle steering wheel from the vehicle sensor or CAN bus: steering wheel angle, steering wheel angle rate, yaw angle, yaw rate, lateral position, lateral speed, and store these information for subsequent processing. transfer.

[0054] 2. Take the steering wheel angle θ from the data sequence i , steering wheel angle rate yaw angle Yaw rate Lateral position H i , lateral speed Basic statistical indicators such as mean (Mean), variance (Std), mean square (RMS), maximum value (Max), and quartile values ​​(Q1, Q2, Q3) are extracted from the absolute value sequence of six parameters.

[0055] (1) The mean of each parameter is:

[0056] M i θ = 1 N Σ i = 1 N ...

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Abstract

The invention provides a driver driving state recognition-based lane departure alarming method, which comprises the following steps of (1) acquiring the condition of control of a driver over a steering wheel from a vehicle-mounted sensor; (2) establishing a statistical performance index characteristic set for operation over the steering wheel; (3) judging whether the driver is fatigue or not according to performance index characteristic information; (4) judging whether to give an alarm to the driver or not according to the fatigue state of the driver and a lane line departure condition. The method has the advantages that 1, the vehicle-mounted sensor is used for inputting the condition of operation of the driver over the steering wheel, a vehicle-mounted speed measurement signal and the like, so that dependence on an external sensor is reduced; 2, the fatigue state of the driver is determined only according to the condition of operation of the driver over the steering wheel, i.e. a rotating angle of the steering wheel, the rotating angular rate of the steering wheel, a heading angle, a heading angular rate, a transverse position and transverse speed; 3, whether an alarming signal is to be transmitted to the driver or not is judged according to the fatigue state of the driver and an alarming condition of a lane line departure alarming system, so that alarming accuracy is ensured, and the false alarm rate is greatly lowered.

Description

technical field [0001] The invention belongs to the field of intelligent traffic, and specifically relates to a method for judging a driver's state, which is combined and applied to a lane departure warning system. Background technique [0002] In long-distance driving, the driver is prone to fatigue, and the vehicle is prone to deviate from the normal driving road, thereby causing serious traffic accidents, resulting in heavy casualties and property losses. The study found that with the deepening of fatigue, the driver's control accuracy of the vehicle decreases, which is manifested as a decrease in the frequency of steering wheel correction, so that the waveform of the steering wheel angle and the vehicle lateral state variable has the characteristics of a decrease in the frequency of fluctuations; due to the frequency of steering wheel correction In order to correct the greatly fluctuating vehicle state, the driver's steering wheel operation is greatly and rapidly correct...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W30/12B60W40/08B60W50/14
CPCB60W40/08B60W40/114B60W2040/0827B60W2050/143
Inventor 陈军
Owner YANGZHOU RUI KONG AUTOMOTIVE ELECTRONICS
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