CN112706710A - Intelligent recognition and warning system and method for safe driving of motor vehicle - Google Patents
Intelligent recognition and warning system and method for safe driving of motor vehicle Download PDFInfo
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- CN112706710A CN112706710A CN202110110014.9A CN202110110014A CN112706710A CN 112706710 A CN112706710 A CN 112706710A CN 202110110014 A CN202110110014 A CN 202110110014A CN 112706710 A CN112706710 A CN 112706710A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
- B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
- B60R16/0232—Circuits relating to the driving or the functioning of the vehicle for measuring vehicle parameters and indicating critical, abnormal or dangerous conditions
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Abstract
The invention discloses an intelligent recognition and warning system and a method for safe driving of a motor vehicle, wherein the system comprises a video image acquisition and processing unit, a main control unit, a shift handle pressure sensor unit and a voice or acousto-optic reminding warning unit; the video image acquisition and processing unit is used for acquiring a live video image, processing the image and extracting driving characteristic information in the driving process of a driver; the gear handle pressure sensor unit is used for acquiring real-time perception and confirming the actions of pushing, pulling and holding the gear handle by a driver; the main control unit is used for judging whether the driver is in an unsafe driving state or not based on the extracted information of the video image acquisition and processing unit and the sensing information provided by the gear shift pressure sensor unit; and the voice or acousto-optic reminding warning unit is used for warning and reminding that the driver is in an unsafe driving state. The invention comprehensively utilizes each sensing/sensing unit to carry out information fusion, judges whether the driver is in an unsafe driving state, and if so, gives out warning prompt, can monitor the driving state of the motor vehicle in real time, and improves the driving safety.
Description
Technical Field
The invention belongs to the technical field of safe driving of motor vehicles, and particularly relates to an intelligent recognition and warning system and method for safe driving of a motor vehicle.
Background
The safe driving style of the motor vehicle has been learned during the driver training. Safe driving requirements: the driver holds the steering wheel at 9 points and 3 points (3-9 points) respectively with both hands, looks at the front and properly observes the left and right rearview mirrors; when starting, stopping and shifting gears, the driver needs to leave the steering wheel with the right hand, operate the gear lever and complete related operations by matching with the pedal.
In real life, some drivers cannot drive safely according to the requirements, such as: one hand leaves the steering wheel and does not perform operation related to driving; the eyes are not looking at the road ahead, and the head is lowered/raised to see the other side or the side is deviated for a long time; both eyes do not habitually glance at the left and right rearview mirrors; even hands off the steering wheel; fatigue driving phenomena such as napping and the like occur; and so on. Considering the individual difference between the drivers holding the steering wheel, the 3-9 point, 2-8 point and 4-6 point steering two-hand holding wheels are all considered as safe two-hand driving holding wheel positions. And the irregular driving behavior can increase the probability of traffic accidents, and the monitoring of the safe driving of the motor vehicle is favorable for the driving safety.
Disclosure of Invention
The invention aims to solve the technical problem of providing an intelligent identification and warning system and method for safe driving of a motor vehicle aiming at the defects of the prior art.
In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows:
an intelligent recognition and warning system for safe driving of a motor vehicle comprises a video image acquisition and processing unit, a main control unit, a shift handle pressure sensor unit and a voice or acousto-optic reminding warning unit;
the video image acquisition and processing unit is used for acquiring a live video image, processing the image and extracting driving characteristic information in the driving process of a driver;
the gear handle pressure sensor unit is used for acquiring real-time perception and confirming the actions of pushing, pulling and holding the gear handle by a driver;
the main control unit is used for judging whether the driver is in an unsafe driving state or not based on the extracted information of the video image acquisition and processing unit and the sensing information provided by the gear shift pressure sensor unit;
and the voice or acousto-optic reminding warning unit is used for warning and reminding that the driver is in an unsafe driving state.
In order to optimize the technical scheme, the specific measures adopted further comprise:
the video image acquisition and processing unit acquires live pictures of a driver in a driving process in real time by using the wide-angle camera and the video processing unit which are installed in a cab, performs clustering identification and pattern recognition on two hands, a steering wheel, a gear handle, eyes and pupils through image processing, and extracts the position information of the two hands of the driver and the characteristic information of the pointing directions of the eyes and the pupils;
the lens of the wide-angle camera points to the direction of the driver.
The video image acquisition and processing unit performs contrast enhancement, binarization, sharpening, noise reduction and edge distortion correction on the acquired live pictures in the driving process of the driver.
The gear handle pressure sensor unit senses the gear handle pressure information in real time through the pressure sensor arranged on the vehicle gear handle, and determines whether the right hand of a driver has the actions of pushing, pulling and holding the gear handle or not by combining the video image information of the video image acquisition and processing unit.
The gear handle pressure sensor unit comprises pressure sensors which are arranged at the top of the gear handle and around the part of the gear handle to be held at equal intervals, when the sensing pressure of any pressure sensor exceeds a set threshold value, the action of holding the gear handle by the driver is preliminarily judged, and whether the driver holds the gear handle is further judged by matching with image processing information.
An intelligent recognition and warning method for safe driving of a motor vehicle comprises the following steps:
the method comprises the steps that firstly, a video image acquisition and processing unit acquires live pictures in the driving process of a driver in real time, clustering identification and pattern recognition are carried out on two hands, a steering wheel, a gear handle, eyes and pupils through image processing, and the position information of the two hands of the driver and the characteristic information of the pointing directions of the eyes and the pupils are extracted;
step two, the gear handle pressure sensor unit senses the gear handle pressure information in real time, and determines whether the right hand of the driver has the actions of pushing, pulling and holding the gear handle or not by combining the video image information of the video image acquisition and processing unit;
the master control unit judges the driving states of both hands and eyes of a driver based on the extracted information of the video image acquisition and processing unit and the sensing information provided by the gear shift pressure sensor unit;
and step four, when the driver is in an unsafe driving state, the voice or acousto-optic reminding warning unit sends out warning reminding.
Calibrating the reference area of the eye hole during normal driving in the following mode in the first step:
when a driver looks straight ahead, the center of an eye hole is set as a reference area center O;
when the driver looks forward and upward, and the condition of a road in front can be seen by the residual light, the center of the eye hole is set as a reference area A point;
when the driver looks forward and downward, and the condition of a road in front can be seen by the residual light, the center of the eye hole is set as a reference area B point;
the driver looks to the left front, the road condition in front can be seen by the residual light, and the center of the eye hole is set as a reference area C point;
the driver's gaze moves to the right front, the road condition in front can be seen by the residual light, and the center of the eye hole is set as a reference area D point;
and determining a driver gaze reference area of normal driving on the basis of O, A, B, C, D.
The first step is to judge the driving sight direction of the driver by the following method:
the driver's gaze direction is judged for the position of reference area to the hole center of looking, and when being located the reference area, the driver's gaze is in driving direction, when being located the reference area left side, and the driver's gaze is in driving direction left side, when being located the reference area right side, and the driver's gaze is in driving direction right side, when being located the reference area top, and the driver's gaze is in driving direction top, when being located the reference area below, and the driver's gaze is in driving direction below.
The third step is to judge the driving state of both hands of the driver by the following method:
311, judging whether two hands are on the steering wheel, if so, further judging the positions of the two hands on the steering wheel, and if not, performing safe driving by the two hands 2-8, 3-9 or 4-10 on the steering wheel, otherwise, performing unsafe driving by the two hands, and otherwise, performing 312;
step 312, determining whether the left hand is on the steering wheel, periodically determining whether the right hand is on the shift knob if the left hand is on the steering wheel, driving with unsafe two hands if the right hand is not on the shift knob, otherwise driving with safe two hands, and performing step 313 if the left hand is not on the steering wheel;
and 313, judging whether the right hand is on the steering wheel, if not, driving with dangerous two hands, otherwise, driving with safe two hands.
The third step is to judge the driving state of both hands of the driver by the following method:
step 321, judging whether the two eyes are open or not by combining a periodic sampling result and the blinking frequency, if the two eyes are not open, driving with dangerous eyes, and if not, performing step 322;
step 322: and periodically judging whether the center of the eye hole is positioned in a normal driving reference area, if so, safely driving with the eyes, and otherwise, driving with the eyes unsafe.
The invention has the following beneficial effects:
the invention comprehensively utilizes each sensing/sensing unit to carry out information fusion, judges whether the driver is in an unsafe driving state, and if so, gives out warning prompt, can monitor the driving state of the motor vehicle in real time, and improves the driving safety.
Drawings
FIG. 1 is a system configuration diagram of the present invention;
FIG. 2 is a driver's hand position identification process;
FIG. 3 is a method for setting a reference position of a safe driving state of eyes and pupils;
FIG. 4 is a process of determining a driver's gaze from the location of an eye hole in an eyeball;
FIG. 5 shows the mounting position of the pressure sensor on the shift knob;
FIG. 6 is a logic flow for bimanual driving status determination;
FIG. 7 is a logic flow of gaze driving state determination;
fig. 8 is a logic flow of safe driving state determination and driving safety warning.
Detailed Description
Embodiments of the present invention are described in further detail below with reference to the accompanying drawings.
Referring to fig. 1, an intelligent recognition and warning system for safe driving of a motor vehicle comprises a video image acquisition and processing unit, a main control unit, a shift handle pressure sensor unit and a voice or acousto-optic reminding warning unit;
the video image acquisition and processing unit is used for acquiring a live video image, processing the image and extracting driving characteristic information in the driving process of a driver;
the gear handle pressure sensor unit is used for acquiring real-time perception and confirming the actions of pushing, pulling and holding the gear handle by a driver;
the main control unit is used for judging whether the driver is in an unsafe driving state or not based on the extracted information of the video image acquisition and processing unit and the sensing information provided by the gear shift pressure sensor unit;
and the voice or acousto-optic reminding warning unit is used for warning and reminding that the driver is in an unsafe driving state.
In the embodiment, the video image acquisition and processing unit acquires a live picture in the driving process of a driver in real time by using a wide-angle camera and a video processing unit which are installed in a cab, performs clustering identification and pattern recognition on two hands, a steering wheel, a gear handle, eyes and pupils after image processing, and extracts the position information of the two hands of the driver and the characteristic information of the pointing directions of the eyes and the pupils;
the lens of the wide-angle camera points to the direction of the driver.
In the embodiment, the video image acquisition and processing unit performs contrast enhancement, binarization, sharpening, noise reduction and edge distortion correction on the acquired live pictures of the driver in the driving process.
In the embodiment, the gear handle pressure sensor unit senses the gear handle pressure information in real time through the pressure sensor arranged on the vehicle gear handle, and determines whether the right hand of a driver has the actions of pushing, pulling and holding the gear handle or not by combining the video image information of the video image acquisition and processing unit.
In the embodiment, the gear handle pressure sensor unit comprises pressure sensors which are arranged at the top of the gear handle and around the part of the gear handle to be held at equal intervals, when the sensing pressure of any pressure sensor exceeds a set threshold, the action of holding the gear handle by the driver is preliminarily judged, and whether the driver holds the gear handle is further judged by matching with image processing information.
An intelligent recognition and warning method for safe driving of a motor vehicle comprises the following steps:
the method comprises the steps that firstly, a video image acquisition and processing unit acquires live pictures in the driving process of a driver in real time, clustering identification and pattern recognition are carried out on two hands, a steering wheel, a gear handle, eyes and pupils through image processing, and the position information of the two hands of the driver and the characteristic information of the pointing directions of the eyes and the pupils are extracted; the two-hand position determination mode is shown in fig. 2;
step two, the gear handle pressure sensor unit senses the gear handle pressure information in real time, and determines whether the right hand of the driver has the actions of pushing, pulling and holding the gear handle or not by combining the video image information of the video image acquisition and processing unit;
thirdly, the main control unit judges the driving states of both hands and eyes of the driver based on the extracted information of the video image acquisition and processing unit and the sensing information provided by the gear shift pressure sensor unit, and the driving states are shown in fig. 8;
and step four, when the driver is in an unsafe driving state, the voice or acousto-optic reminding warning unit sends out warning reminding.
Referring to fig. 3, in the embodiment, step one is to calibrate the reference area of the eye during normal driving by:
when a driver looks straight ahead, the center of an eye hole is set as a reference area center O;
when the driver looks forward and upward, and the condition of a road in front can be seen by the residual light, the center of the eye hole is set as a reference area A point;
when the driver looks forward and downward, and the condition of a road in front can be seen by the residual light, the center of the eye hole is set as a reference area B point;
the driver looks to the left front, the road condition in front can be seen by the residual light, and the center of the eye hole is set as a reference area C point;
the driver's gaze moves to the right front, the road condition in front can be seen by the residual light, and the center of the eye hole is set as a reference area D point;
and determining a driver gaze reference area of normal driving on the basis of O, A, B, C, D.
Referring to fig. 4, in the embodiment, the first step is to determine the driver's gaze direction by:
the driver's gaze direction is judged for the position of reference area to the hole center of looking, and when being located the reference area, the driver's gaze is in driving direction, when being located the reference area left side, and the driver's gaze is in driving direction left side, when being located the reference area right side, and the driver's gaze is in driving direction right side, when being located the reference area top, and the driver's gaze is in driving direction top, when being located the reference area below, and the driver's gaze is in driving direction below.
In the embodiment, a gear handle is arranged in a cab of the motor vehicle, whether the vehicle is a manual gear vehicle or an automatic gear vehicle, on the right side of a driver, and is used for gear shifting and hand brake pulling/releasing. When a driver operates the shift handle, the driver can hold or pull the shift handle, and pressure is inevitably generated on the position where the shift handle is held. Therefore, the pressure sensor can be used for detecting whether the right hand of the driver is operating the shift handle or not, so as to assist the monitoring of the safe driving state.
As shown in fig. 5, a pressure sensor is respectively installed at equal intervals on the top of the shift knob at the position 0 and around the part of the shift knob at the positions 1, 2, 3 and 4, and the pressure sensors together form a shift knob pressure sensing unit for assisting in comprehensively judging whether the driver holds the shift knob with the right hand. As long as any sensor in the pressure sensing unit senses that the pressure exceeds a set threshold value, the action of the driver holding the gear handle can be preliminarily judged, and the driver can be judged whether to hold the gear handle or not by matching with the image processing information.
Referring to fig. 6, the driving state of both hands of the driver is judged in the third step by the following method:
311, judging whether two hands are on the steering wheel, if so, further judging the positions of the two hands on the steering wheel, and if not, performing safe driving by the two hands 2-8, 3-9 or 4-10 on the steering wheel, otherwise, performing unsafe driving by the two hands, and otherwise, performing 312;
step 312, determining whether the left hand is on the steering wheel, periodically determining whether the right hand is on the shift knob if the left hand is on the steering wheel, driving with unsafe two hands if the right hand is not on the shift knob, otherwise driving with safe two hands, and performing step 313 if the left hand is not on the steering wheel; the reason for the periodic determination, i.e. the delay, is that the driver will hold the shift knob with the right hand during the gear shifting operation, and this action is filtered out by the delay.
And 313, judging whether the right hand is on the steering wheel, if not, driving with dangerous two hands, otherwise, driving with safe two hands.
Referring to fig. 7, in the embodiment, the third step is to determine the two-hand driving state of the driver as follows:
step 321, judging whether the two eyes are open or not by combining a periodic sampling result and the blinking frequency, if the two eyes are not open, driving with dangerous eyes, and if not, performing step 322;
step 322: and periodically judging whether the center of the eye hole is positioned in a normal driving reference area, if so, safely driving with the eyes, and otherwise, driving with the eyes unsafe.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may be made by those skilled in the art without departing from the principle of the invention.
Claims (10)
1. An intelligent recognition and warning system for safe driving of a motor vehicle is characterized by comprising a video image acquisition and processing unit, a main control unit, a shift handle pressure sensor unit and a voice or acousto-optic reminding warning unit;
the video image acquisition and processing unit is used for acquiring a live video image, processing the image and extracting driving characteristic information in the driving process of a driver;
the gear handle pressure sensor unit is used for acquiring real-time perception and confirming the actions of pushing, pulling and holding the gear handle by a driver;
the main control unit is used for judging whether the driver is in an unsafe driving state or not based on the extracted information of the video image acquisition and processing unit and the sensing information provided by the gear shift pressure sensor unit;
and the voice or acousto-optic reminding warning unit is used for warning and reminding that the driver is in an unsafe driving state.
2. The intelligent recognition and warning system for safe driving of the motor vehicle as claimed in claim 1, wherein the video image acquisition and processing unit uses a wide-angle camera and a video processing unit installed in a cab to acquire live pictures of a driver in a driving process in real time, and performs cluster recognition and pattern recognition on two hands, a steering wheel, a shift handle, eyes and pupils through image processing to extract the position information of the two hands of the driver and the characteristic information of pointing directions of the eyes and the pupils;
the lens of the wide-angle camera points to the direction of the driver.
3. The intelligent recognition and warning system for safe driving of motor vehicles according to claim 2, wherein the video image acquisition and processing unit performs contrast enhancement, binarization, sharpening, noise reduction and edge distortion correction on the acquired live pictures of the drivers in the driving process.
4. The intelligent recognition and warning system for safe driving of motor vehicles according to claim 1, wherein the pressure sensor unit of the shift knob senses the pressure information of the shift knob in real time through the pressure sensor mounted on the shift knob of the vehicle, and determines whether the right hand of the driver has the action of pushing, pulling and holding the shift knob or not by combining the video image information of the video image acquisition and processing unit.
5. The intelligent recognition and warning system for safe driving of motor vehicles according to claim 4, wherein the shift knob pressure sensor unit comprises pressure sensors installed at equal intervals on the top of the shift knob and around the portion of the shift knob to be held, when the sensed pressure of any one of the pressure sensors exceeds a set threshold, the operation of holding the shift knob by the driver is preliminarily determined, and whether the driver holds the shift knob or not is further determined in cooperation with the image processing information.
6. The intelligent recognition and warning method for safe driving of motor vehicle of the intelligent recognition and warning system for safe driving of motor vehicle as claimed in any one of claims 1-5, comprising:
the method comprises the steps that firstly, a video image acquisition and processing unit acquires live pictures in the driving process of a driver in real time, clustering identification and pattern recognition are carried out on two hands, a steering wheel, a gear handle, eyes and pupils through image processing, and the position information of the two hands of the driver and the characteristic information of the pointing directions of the eyes and the pupils are extracted;
step two, the gear handle pressure sensor unit senses the gear handle pressure information in real time, and determines whether the right hand of the driver has the actions of pushing, pulling and holding the gear handle or not by combining the video image information of the video image acquisition and processing unit;
the master control unit judges the driving states of both hands and eyes of a driver based on the extracted information of the video image acquisition and processing unit and the sensing information provided by the gear shift pressure sensor unit;
and step four, when the driver is in an unsafe driving state, the voice or acousto-optic reminding warning unit sends out warning reminding.
7. The intelligent recognition and warning method for safe driving of the motor vehicle as claimed in claim 6, wherein the first step is to calibrate the reference area of eye hole during normal driving by:
when a driver looks straight ahead, the center of an eye hole is set as a reference area center O;
when the driver looks forward and upward, and the condition of a road in front can be seen by the residual light, the center of the eye hole is set as a reference area A point;
when the driver looks forward and downward, and the condition of a road in front can be seen by the residual light, the center of the eye hole is set as a reference area B point;
the driver looks to the left front, the road condition in front can be seen by the residual light, and the center of the eye hole is set as a reference area C point;
the driver's gaze moves to the right front, the road condition in front can be seen by the residual light, and the center of the eye hole is set as a reference area D point;
and determining a driver gaze reference area of normal driving on the basis of O, A, B, C, D.
8. The intelligent recognition and warning method for safe driving of motor vehicles according to claim 6, wherein the first step is to determine the direction of the driver's gaze by:
the driver's gaze direction is judged for the position of reference area to the hole center of looking, and when being located the reference area, the driver's gaze is in driving direction, when being located the reference area left side, and the driver's gaze is in driving direction left side, when being located the reference area right side, and the driver's gaze is in driving direction right side, when being located the reference area top, and the driver's gaze is in driving direction top, when being located the reference area below, and the driver's gaze is in driving direction below.
9. The intelligent recognition and warning method for safe driving of motor vehicles according to claim 6, wherein the third step is to determine the driving status of both hands of the driver by:
311, judging whether two hands are on the steering wheel, if so, further judging the positions of the two hands on the steering wheel, and if not, performing safe driving by the two hands 2-8, 3-9 or 4-10 on the steering wheel, otherwise, performing unsafe driving by the two hands, and otherwise, performing 312;
step 312, determining whether the left hand is on the steering wheel, periodically determining whether the right hand is on the shift knob if the left hand is on the steering wheel, driving with unsafe two hands if the right hand is not on the shift knob, otherwise driving with safe two hands, and performing step 313 if the left hand is not on the steering wheel;
and 313, judging whether the right hand is on the steering wheel, if not, driving with dangerous two hands, otherwise, driving with safe two hands.
10. The intelligent recognition and warning method for safe driving of motor vehicles according to claim 6, wherein the third step is to determine the driving status of both hands of the driver by:
step 321, judging whether the two eyes are open or not by combining a periodic sampling result and the blinking frequency, if the two eyes are not open, driving with dangerous eyes, and if not, performing step 322;
step 322: and periodically judging whether the center of the eye hole is positioned in a normal driving reference area, if so, safely driving with the eyes, and otherwise, driving with the eyes unsafe.
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