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A driver alertness state detection method

A state detection, driver technology, applied in the directions of diagnostic recording/measurement, medical science, sensors, etc., to achieve the effect of reducing time, concise representation, and easy access

Active Publication Date: 2018-06-19
苏州市振渭城镇建设发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for detecting the driver's alertness state, which can effectively solve the problem of prompting and alarming when the driver is in fatigue driving.

Method used

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  • A driver alertness state detection method
  • A driver alertness state detection method
  • A driver alertness state detection method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1, the subject of the experiment is a driver who has driven for more than three hours and is recorded as driver 1.

[0034] Its concrete implementation method is, a kind of driver's vigilance state detection method, comprises the following steps:

[0035] A. Acquisition of the driver's EEG signal

[0036] The driver wears an EEG signal collection cap on his head, and the EEG signal collection cap collects the driver's EEG signal when the driver is driving the car, and obtains the EEG signal f of driver 1 1 , and the collected driver’s EEG signal f 1 It is transmitted to the EEG signal processing module through wireless transmission technology;

[0037] B. Denoising of the driver's EEG signal

[0038] The EEG signal processing module collects the EEG signal f of the driver collected by the EEG signal acquisition cap 1 The DWT algorithm is used for denoising processing, and the denoised driver's EEG signal g is obtained 1 ;

[0039]

[0040] C. Downsam...

Embodiment 2

[0050] Embodiment 2 / 3 / 4 Repeat the operations of steps A to E above.

[0051] The inventive method sees the following table to the driver vigilance detection test result.

[0052] driver number

[0053] It can be seen that the present invention has a high degree of confidence in the detection of driver alertness.

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Abstract

The invention discloses a method for detecting the vigilance state of a driver, and relates to the technical field of automobile driver active safety.The aim of giving a prompting alarm when the driver is in fatigue driving is effectively achieved.The method mainly comprises the following steps that brain electrical signal data of the driver in a sober state or fatigue state is collected through a chip, a wireless transmission technology and a peripheral circuit brain electrical signal processing module, the collected data is used for editing a redundant dictionary, and the brain electrical signals of the driver in different time frames in the driving process are collected in real time and transmitted to the brain electrical signal processing module through the wireless transmission technology; the brain electrical signals are denoised through a discrete wavelet transform (DWT) algorithm, downsampling of the brain electrical signals, feature extraction of the brain electrical signals and pattern classification of the vigilance state of the driver are carried out, and if it is judged that the driver has a fatigue driving condition, a control signal is output, and an alarming device located on a seat of the driver is controlled to remind the driver by vibration or buzzing.The method is mainly used for endurance run fatigue alarming.

Description

technical field [0001] The invention relates to the technical field of active safety for automobile drivers. technical background [0002] Traffic safety has become a worldwide problem. According to literature review, the number of deaths due to traffic accidents in the world is about 500,000 every year. In recent years, due to the continuous increase of cars in cities, traffic accidents caused by driver fatigue have also increased significantly. [0003] When the driver is in fatigue driving, the judgment ability decreases, the response is slow and the operation error increases. When the driver is slightly fatigued, the gear shift will not be timely or accurate; when the driver is moderately fatigued, the operation action will be sluggish, and sometimes even forget to operate; Sleep phenomenon, in severe cases, will lose the ability to control the vehicle. When the driver is tired, there will be phenomena such as blurred vision, sore back, dull movements, swollen hands ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/18A61B5/0476
CPCA61B5/18A61B5/7257A61B5/7264A61B5/369
Inventor 张祖涛张效良罗典媛刘昱岗王富斌李晏君
Owner 苏州市振渭城镇建设发展有限公司
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