CN105303830A - Driving behavior analysis system and analysis method - Google Patents

Driving behavior analysis system and analysis method Download PDF

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Publication number
CN105303830A
CN105303830A CN201510591585.3A CN201510591585A CN105303830A CN 105303830 A CN105303830 A CN 105303830A CN 201510591585 A CN201510591585 A CN 201510591585A CN 105303830 A CN105303830 A CN 105303830A
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China
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driving behavior
described
current
driver
vehicle
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CN201510591585.3A
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Chinese (zh)
Inventor
周剑
徐一丹
晁志超
陆宏伟
龙学军
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成都通甲优博科技有限责任公司
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Priority to CN201510591585.3A priority Critical patent/CN105303830A/en
Publication of CN105303830A publication Critical patent/CN105303830A/en

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Abstract

The invention relates to the field of vehicle safety driving control, and particularly relates to a driving behavior analysis system and analysis method. The system comprises a driver fatigue tester which acquires the current fatigue value of a driver, a vehicle driving state tester which acquires the current driving behavior value of a driving vehicle, a vehicle acceleration tester which acquires an acceleration value in the vehicle driving process, a calculator which calculates the driving behavior score of the driver according to the current fatigue value, the current driving behavior value and the acceleration value, and a remote server which receives and stores the driving behavior score, and reminds the driver to avoid fatigue driving or violation driving when the driving behavior score is low. The remote server receives and stores the driving behavior score, and stores each time of driving behavior score record of the driver. The analysis system and the analysis method are conducive to safe driving of the driver.

Description

A kind of driving behavior analysis system and analytical approach

Technical field

Patent of the present invention relates to safe driving of vehicle control field, particularly a kind of driving behavior analysis system and analytical approach.

Background technology

Along with the raising with living standards of the people that develops rapidly of China's economy, the recoverable amount of motor vehicle and the growth rate of newly-increased highway mileage number are constantly accelerated.Meanwhile, road traffic accident, especially pernicious traffic hazard presents continuous ascendant trend, how to reduce traffic hazard incidence and has become one of huge difficult problem of current transportation industry, and cause the great attention of national governments.In vehicle operation, especially drive over a long distance in process, driver, because health is not good or drive for a long time, easily produces fatigue, and thinking ability declines, slow in reacting; On the other hand, when pilot's line of vision is not on road surface, vehicle also can run-off-road, easily gets into an accident.Research shows: quality and the traffic hazard incidence of driving behavior exist direct cause-effect relationship.Examining the driving record discoveries in 2 years that 1447 occur the driver of fatal traffic accident, compared with the driver that major traffic accidents do not occur, the violation record of these drivers in 2 years is significantly higher than average level.Therefore, the driving behavior of research automobile driver, detects and the violation driving behavior preventing it to occur is significant to minimizing traffic hazard.

Existing driver fatigue early warning system, adopts driver's face-image treatment technology, or brain electricity, EGC sensor technology, or bearing circle holding power transducer technology, and whether prediction driver enters fatigue state.These technology or existence need driver to wear the requirement of particular device, or fatigue judges that precision is lower, or tired judged result receives the impact of driver custom comparatively greatly, or fatigue judges the shortcomings such as more delayed.

Existing road vehicle departure warning system, adopts lane line image recognition technology, by the lane line detected in image, can judge the position relationship of this vehicle relative to lane line, when vehicle tyre presses through lane line, send alarm.The disadvantage that this technology exists is whether be initiatively switch lane line, its judging nicety rate is not high if being difficult to assess driver.

Road vehicle departure warning system not only installed driver fatigue early warning system but also installed by some vehicles, at that time each self-operating of two cover systems, the different conditions according to driver that cannot be real, the security alarm work of executive system.Often can produce false alarm situation, and report to the police continually and reduce driver on the contrary to the reaction sensitivity of reporting to the police, and the generation caused the accident.

Summary of the invention

For above defect, the present invention aims to provide a kind of in order to carry out detection and Identification to the bad steering behavior of driver, and accordingly driver is carried out to driving behavior analysis system and the analytical approach of driving behavior analysis judgement.

The invention provides a kind of driving behavior analysis system, wherein, comprising:

Driver fatigue analyzer, obtains the current fatigue data of driver;

Vehicle running state analyzer, obtains the current driving behavior value that vehicle travels;

Vehicle acceleration analyzer, obtains the accekeration in vehicle travel process;

Counter, calculates form driving behavior scoring according to current described fatigue data, current described driving behavior value, described accekeration;

Remote service end, receives and preserves described driving behavior scoring.

Preferably, above-mentioned driving behavior analysis system, wherein, also comprises,

Identifying unit, is preset with safe driving behavior asset pricing, in order to judge whether described driving behavior scoring mates described safe driving behavior asset pricing, and forms a judged result output;

Alarm unit is, under described safe driving behavior asset pricing state is not mated in described driving behavior scoring, send alerting signal in described judged result;

Preferably, above-mentioned driving behavior analysis system, wherein, described driver fatigue analyzer comprises:

Facial image acquisition unit, the current face image of Real-time Collection driver;

Sight line offset detection unit, detects driver head's attitude in real time;

Current fatigue data extraction unit, extracts fatigue characteristic vector according to described current face image, described head pose, then calculates described current fatigue data according to the fatigue characteristic vector calculation preset.

Preferably, above-mentioned driving behavior analysis system, wherein, described current fatigue data is any one or a few in head movement speed, head movement angular velocity, eye movement speed, face orientation, direction of visual lines and frequency of wink, eye closing frequency, degree of depth eye closing frequency.

Preferably, above-mentioned driving behavior analysis system, wherein, described vehicle running state analyzer comprises:

Vehicle front road scene image collecting unit, the current scene image of Real-time Collection vehicle front road;

Current driving behavior value extraction unit, according to described current scene image zooming-out vehicle running state vector, then calculates described current driving behavior value according to the vehicle running state vector calculation preset.

Preferably, above-mentioned driving behavior analysis system, wherein, described current driving behavior value is that wheel is pressed onto the distance of distance, the relatively front truck of lane line, wheel is pressed onto any one in the time of lane line and the time of collision front truck or several.

Preferably, above-mentioned driving behavior analysis system, wherein, described vehicle acceleration analyzer, comprises

Sensor unit, the acceleration information advanced in order to Real-time Collection vehicle;

Current acceleration extraction unit, forms described accekeration in order to calculate according to described acceleration information.

Preferably, above-mentioned driving behavior analysis system, wherein, described accekeration is any one or more in positive acceleration value in the unit time, negative acceleration value, angular acceleration values, hypervelocity value.

A kind of driving behavior analysis method, wherein, comprising:

Obtain the current fatigue data of driver;

Obtain the current driving behavior value that vehicle travels;

Obtain the accekeration in vehicle travel process;

The driving behavior scoring forming driver is calculated according to current described fatigue data, current described driving behavior value, described accekeration;

Preserve described driving behavior scoring.

Preferably, above-mentioned driving behavior analysis method, wherein:

According to the driver information of user's input, the driving behavior that inquiry and driver information match is marked.

The beneficial effect of the invention

The current fatigue data of driver is obtained by driver fatigue analyzer; The current driving behavior value of vehicle traveling is obtained by vehicle running state analyzer; The accekeration in vehicle travel process is obtained by vehicle acceleration analyzer; Counter carries out calculating scoring operation according to current fatigue data, current driving behavior value, accekeration to the driving behavior of driver, thus form driving behavior scoring, be preset with safe driving behavior asset pricing, in order to judge whether described driving behavior scoring mates described safe driving behavior asset pricing, and form a judged result output; Alarm unit is, under described safe driving behavior asset pricing state is not mated in described driving behavior scoring, send alerting signal in described judged result; Understand driver's current residing driving condition when driver and passenger real, under the state that driving behavior scoring is lower, remind driver, avoid driver tired driving or drive in violation of rules and regulations.Remote service termination is received and is preserved described driving behavior scoring, preserves driver's each driving behavior scoring record by remote service end.Be of value to driver safety to drive.

Accompanying drawing explanation

Fig. 1 is the structural representation of a kind of driving behavior analysis system of the present invention;

Fig. 2 is the schematic flow sheet of a kind of driving behavior analysis method of the present invention.

Embodiment

Below in conjunction with the drawings and specific embodiments, the invention will be further described, but not as limiting to the invention.

Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite of not making creative work, all belongs to the scope of protection of the invention.

It should be noted that, when not conflicting, the embodiment in the present invention and the feature in embodiment can combine mutually.

Below in conjunction with the drawings and specific embodiments, the invention will be further described, but not as limiting to the invention.

As shown in Figure 1, a kind of driving behavior analysis system, comprising: driver fatigue analyzer, vehicle running state analyzer, vehicle acceleration analyzer, counter, remote service end,

Driver fatigue analyzer, obtains the current fatigue data of driver;

Vehicle running state analyzer, obtains the current driving behavior value that vehicle travels;

Vehicle acceleration analyzer, obtains the accekeration in vehicle travel process;

Counter, calculates according to current described fatigue data, current described driving behavior value, described accekeration the driving behavior scoring forming driver;

Remote service end, receives and preserves described driving behavior scoring,

Also can comprise identifying unit in addition, be preset with safe driving behavior asset pricing, in order to judge whether described driving behavior scoring mates described safe driving behavior asset pricing, and form a judged result output; Safe driving behavior asset pricing can operate according to actual conditions,

Alarm unit is, under described safe driving behavior asset pricing state is not mated in described driving behavior scoring, send alerting signal in described judged result;

Principle of work of the present invention is: the current fatigue data being obtained driver by driver fatigue analyzer; The current driving behavior value of vehicle traveling is obtained by vehicle running state analyzer; The accekeration in vehicle travel process is obtained by vehicle acceleration analyzer; Counter carries out calculating scoring operation according to current fatigue data, current driving behavior value, accekeration to the driving behavior of driver, thus form driving behavior scoring, be preset with safe driving behavior asset pricing, in order to judge whether described driving behavior scoring mates described safe driving behavior asset pricing, and form a judged result output; Alarm unit is, under described safe driving behavior asset pricing state is not mated in described driving behavior scoring, send alerting signal in described judged result; Understand driver's current residing driving condition when driver and passenger real, under the state that driving behavior scoring is lower, remind driver, avoid driver tired driving or drive in violation of rules and regulations.Remote service termination is received and is preserved described driving behavior scoring, preserves driver's each driving behavior scoring record by remote service end.Be of value to driver safety to drive.

As further preferred embodiment, above-mentioned driving behavior analysis system, wherein driver fatigue analyzer comprises,

Facial image acquisition unit, the current face image of Real-time Collection driver;

Sight line offset detection unit, extracts driver head's attitude;

Current fatigue data extraction unit, extracts fatigue characteristic vector according to described current face image, described head pose, then calculates described current fatigue data according to the fatigue characteristic vector calculation preset.

Current fatigue data extraction unit positions the face in current face image, then from human face region, characteristic area is extracted, these characteristic areas mainly cover the important angle point of people face, again image texture characteristic vector is extracted to characteristic area, these features comprise apart from feature, edge feature, histogram feature etc., again the proper vector of extraction and tired image feature vector calculation procedure are calculated, the relevance score of regional is weighted summation, weighting coefficient is relevant with the degree of confidence that regional detects, the tired score value of this face can be obtained, finally the tired score value in certain time window on time shaft and the template vector deposited in memory are in advance carried out dot product, the fatigue data of driver in this final time window can be obtained.

As further preferred embodiment, above-mentioned driving behavior analysis system, wherein vehicle running state analyzer obtains the current driving behavior value that vehicle travels, and comprises vehicle front road scene image collecting unit and current driving behavior value extraction unit.

The fatigue data of driver can investigate one or more the parameter Simultaneously test in following several parameter of driver's face: head movement speed, head movement angular velocity, eye movement speed, face orientation, direction of visual lines and frequency of wink, eye closing frequency, degree of depth eye closing frequency.

In addition facial image acquisition unit also can gather driver whether wear safety belt, ear's barrier (when in driving procedure, when cell-phone is answered or converses, then there is barrier in ear edge) information, in order to judge whether driver is in safe driving attitude.

As further preferred embodiment, above-mentioned driving behavior analysis system, wherein said vehicle running state analyzer comprises:

Vehicle front road scene image collecting unit, the current scene image of Real-time Collection vehicle front road;

Current driving behavior value extraction unit, according to described current scene image zooming-out vehicle running state vector, then calculates described current driving behavior value according to the vehicle running state vector calculation preset.

Vehicle front road scene image collecting unit is video camera or the camera of aiming at vehicle front road, the current scene image of Real-time Collection vehicle front road.Current scene image comprises this car travel direction road surface and road surface with the image information of upper part, and its content comprises the pedestrian etc. on the lane line on road surface, the vehicle on road surface, road surface.Current driving behavior value extraction unit calculates described current driving behavior value according to the vehicle running state vector calculation preset.

Such as, current driving behavior value extraction unit detects the lane line existed in image, extract the type of lane line, such as solid line, dotted line, double solid line etc., and according to the position of the vehicle front road scene image collecting unit realizing demarcating relative to this car, calculate the expression equation of lane line under this car coordinate system, the lateral separation of this car relative to left or right side lane line can be calculated further thus.

Such as, current driving behavior value extraction unit detects the vehicle existed in image, and according to the vehicle front road scene image collecting unit realizing demarcating relative to the position of this car, calculate be detected the position coordinates of vehicle under this car coordinate system, determine the distance of this car relative to front truck.

Current driving behavior value extraction unit can calculate according to image the time that lane line crossed over by vehicle, and collides the time required for front truck.The time of the time or collision front truck that wheel is pressed onto lane line can also be extracted as current driving behavior value.

The value that extraction wheel is pressed onto the time of lane line or the time of collision front truck is less, and represent that vehicle distances is pressed onto lane line, or the time colliding front truck is shorter, corresponding driving behavior is more dangerous, and the driving behavior value be converted to is higher; This car relative to the lateral separation of left or right side lane line and Ben Che less relative to the value of the distance of front truck, represent that vehicle is the closer to lane line, or distance front truck is nearer, the driving behavior of correspondence is more dangerous, and the driving behavior value be converted to is higher.

As further preferred embodiment, above-mentioned driving behavior analysis system, wherein said vehicle running state analyzer comprises:

Sensor unit, the acceleration information advanced in order to Real-time Collection vehicle; Further, sensor unit can comprise GPS, accelerometer, gyroscope.Sensor unit can be formed by mobile terminal in addition, at least comprises GPS in mobile terminal, accelerometer, gyroscope.

Current acceleration extraction unit, forms accekeration in order to calculate according to described acceleration information.

Further, described accekeration is any one or more in positive acceleration value in the unit time, negative acceleration value, angular acceleration values, hypervelocity value.

Positive acceleration is in order to judge whether driver implements the operation of suddenly stepping on the gas, negative acceleration is in order to judge whether driver implements the operation of brake hard, angular acceleration is in order to judge whether driver implements the operation of taking a sudden turn, each acceleration is provided with the threshold range corresponded, when acceleration not matching threshold scope, judge that driver implements any one dangerous driving above-mentioned operation.

As shown in Figure 2, the present invention provides a kind of driving behavior analysis method simultaneously, wherein, comprising:

Obtain the current fatigue data of driver;

Obtain the current driving behavior value that vehicle travels;

Obtain the accekeration in vehicle travel process;

The driving behavior scoring forming driver is calculated according to current described fatigue data, current described driving behavior value, described accekeration; Further, formation driving behavior scoring is calculated by fuzzy comprehensive estimation.

Preserve described driving behavior scoring.

As further preferred embodiment, above-mentioned driving behavior analysis method, wherein:

According to the driver information of user's input, the driving behavior that inquiry and driver information match is marked.

Driving behavior analysis method and above-mentioned driving behavior analysis system, its principle of work is identical, does not repeat herein.

The technical scheme provided as the application can with other software or hardware with the use of, such as, with existing special train software, user, when selecting special train, may be read into the driving behavior scoring of this special train driver, is conducive to user and better protects inherently safe.

The foregoing is only preferred embodiment of the present invention; not thereby embodiments of the present invention and protection domain is limited; to those skilled in the art; should recognize and all should be included in the scheme that equivalent replacement done by all utilizations instructions of the present invention and diagramatic content and apparent change obtain in protection scope of the present invention.

Claims (10)

1. a driving behavior analysis system, is characterized in that, comprising:
Driver fatigue analyzer, obtains the current fatigue data of driver;
Vehicle running state analyzer, obtains the current driving behavior value that vehicle travels;
Vehicle acceleration analyzer, obtains the accekeration in vehicle travel process;
Counter, calculates according to current described fatigue data, current described driving behavior value, described accekeration the driving behavior scoring forming driver;
Remote service end, receives and preserves described driving behavior scoring.
2. driving behavior analysis system according to claim 1, is characterized in that: wherein, also comprises
Identifying unit, is preset with safe driving behavior asset pricing, in order to judge whether described driving behavior scoring mates described safe driving behavior asset pricing, and forms a judged result output;
Alarm unit is, under described safe driving behavior asset pricing state is not mated in described driving behavior scoring, send alerting signal in described judged result.
3. driving behavior analysis system according to claim 1, is characterized in that:
Wherein, described driver fatigue analyzer comprises:
Facial image acquisition unit, the current face image of Real-time Collection driver;
Sight line offset detection unit, extracts driver head's attitude;
Current fatigue data extraction unit, extracts fatigue characteristic vector according to described current face image, described head pose, then calculates described current fatigue data according to the fatigue characteristic vector calculation preset.
4. driving behavior analysis system according to claim 3, it is characterized in that: wherein, described current fatigue data is any one or a few in head movement speed, head movement angular velocity, eye movement speed, face orientation, direction of visual lines and frequency of wink, eye closing frequency, degree of depth eye closing frequency.
5. driving behavior analysis system according to claim 1, is characterized in that: wherein, and described vehicle running state analyzer comprises:
Vehicle front road scene image collecting unit, the current scene image of Real-time Collection vehicle front road;
Current driving behavior value extraction unit, according to described current scene image zooming-out vehicle running state vector, then calculates described current driving behavior value according to the vehicle running state vector calculation preset.
6. driving behavior analysis system according to claim 1, is characterized in that:
Wherein, described current driving behavior value is that wheel is pressed onto the distance of distance, the relatively front truck of lane line, wheel is pressed onto any one in the time of lane line and the time of collision front truck or several.
7. driving behavior analysis system according to claim 5, is characterized in that: wherein, and described vehicle acceleration analyzer, comprises
Sensor unit, the acceleration information advanced in order to Real-time Collection vehicle;
Current acceleration extraction unit, forms described accekeration in order to calculate according to described acceleration information.
8. driving behavior analysis system according to claim 7, is characterized in that: described accekeration is any one or more in positive acceleration value in the unit time, negative acceleration value, angular acceleration values, hypervelocity value.
9. a driving behavior analysis method, is characterized in that, comprising:
Obtain the current fatigue data of driver;
Obtain the current driving behavior value that vehicle travels;
Obtain the accekeration in vehicle travel process;
The driving behavior scoring forming driver is calculated according to current described fatigue data, current described driving behavior value, described accekeration;
Preserve described driving behavior scoring.
10. driving behavior analysis method according to claim 9, is characterized in that:
According to the driver information of user's input, the driving behavior that inquiry and driver information match is marked.
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