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A device for detecting a driver's safe driving state

A state detection device and technology for safe driving, applied in diagnostic recording/measurement, medical science, sensors, etc., can solve problems such as unreliable effects, increased driver burden, and difficulty in ensuring timeliness, and achieve the effect of improving safety.

Active Publication Date: 2015-10-28
NAT UNIV OF DEFENSE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To sum up, this kind of method infers the driver's safe driving state through the driver's fatigue state, and there are three problems in the following aspects: First, it is an indirect detection method itself, and the effect is not reliable
The third is to infer whether the driver's driving state is safe from the fatigue state, and the timeliness is difficult to guarantee
The disadvantage of this type of method is that it can only be judged when a dangerous traffic event is about to take place, and it is difficult to provide a clear and objective method for distinguishing between normal traffic events and abnormal traffic events, such as normal traffic events. overtaking behavior and abnormal lane deviation behavior
Although this type of method can directly judge whether the driver can respond to sudden stimulation, this type of method also has the following disadvantages: the one is that it is easy to disperse the driver's attention in doing so itself.
The second is that the specific mode of stimulation itself has produced additional stimulation to the driver's psychological activities, increasing the driver's burden
The existing detection technology of the driver's safe driving state is difficult to detect the second type of unsafe driving state

Method used

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  • A device for detecting a driver's safe driving state
  • A device for detecting a driver's safe driving state
  • A device for detecting a driver's safe driving state

Examples

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example

[0116] Example: During 10 seconds of driving on the highway, simultaneously collect the front view image (10 frames per second) and the driver's gaze point (1 collection every 100ms). According to the image content, the first type of area includes the lane area, the vehicle area in front (there are no pedestrians and traffic signs during this period), the instrument panel area and the rearview mirror area. The second type of area is a billboard area. In this instance, the driver's gaze tracking is consistently placed on the billboard.

[0117] According to the tracking situation and gaze delivery situation of the above-mentioned regions, the activity values ​​of all regions can be calculated. It should be noted that in actual calculation, the dynamic equations of equations (1) and (2) are in continuous form and need to be changed to differential form. Equation (1) is rewritten as:

[0118] V(n+1)=V(n)-[(α'+φγ)(V(n)-0)+β(1+μ-V(n))]T (10)

[0119] Equation (2) can be rewritt...

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Abstract

The invention relates to a device for detecting safety driving states of a driver. The device comprises line-of-sight capturing equipment, more than one vehicle-mounted forward scene camera and a computer, wherein the line-of-sight capturing equipment is used for detecting the current line-of-sight direction of the driver in real time; the vehicle-mounted forward scene cameras are used for collecting a scene image signal in a forward road when a vehicle travels; the computer is used for processing the collected current scene image signal according to a visual attention calculation model, obtaining the expected attention distribution of the driver under the current road scene, integrating and analyzing the real-time detected current line-of-sight direction of the driver and the calculated expected attention distribution of the driver, and judging if the driver is in the normal driving state and if the driver can timely make a proper response to the sudden road traffic accidents. The device has the advantages that the principle is simple, the implementation is easy, the real driving state of the driver can be directly reflected, the driving safety is improved, and the like.

Description

technical field [0001] The invention mainly relates to the field of vehicle active safety design, in particular to a device for detecting a driver's safe driving state. Background technique [0002] With the development of the automobile industry, automobiles have increasingly become an important part of social production and daily life; at the same time, automobile safety issues have gradually become the focus of attention. According to statistics, about 75% of road traffic accidents are caused by human error, that is, due to the driver's personal factors. Specifically, it includes the driver's inaccurate estimation of the vehicle's operating environment, the driver's reaction lag, and so on. Therefore, detecting whether the driver's driving state is safe through technical means can effectively improve the safety of road traffic. [0003] At present, the detection technology for the driver's safe driving state can be divided into three categories: the first category is ba...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/18
Inventor 安向京李健吴涛叶磊孙振平贺汉根
Owner NAT UNIV OF DEFENSE TECH
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