CN112270808A - Fatigue driving prevention method and device and vehicle - Google Patents
Fatigue driving prevention method and device and vehicle Download PDFInfo
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- CN112270808A CN112270808A CN202011146967.2A CN202011146967A CN112270808A CN 112270808 A CN112270808 A CN 112270808A CN 202011146967 A CN202011146967 A CN 202011146967A CN 112270808 A CN112270808 A CN 112270808A
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/06—Alarms for ensuring the safety of persons indicating a condition of sleep, e.g. anti-dozing alarms
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V20/00—Scenes; Scene-specific elements
- G06V20/50—Context or environment of the image
- G06V20/59—Context or environment of the image inside of a vehicle, e.g. relating to seat occupancy, driver state or inner lighting conditions
- G06V20/597—Recognising the driver's state or behaviour, e.g. attention or drowsiness
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/16—Human faces, e.g. facial parts, sketches or expressions
- G06V40/161—Detection; Localisation; Normalisation
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Abstract
The embodiment of the invention provides a method and a device for preventing fatigue driving and a vehicle, and relates to the technical field of vehicles. The anti-fatigue driving method comprises the steps of obtaining facial image information of a driver once every preset time interval; analyzing the eye-closing time of the driver according to the plurality of facial image information; judging whether the driver is in a fatigue driving state or not according to the eye-closing time; and if the driver is in a fatigue driving state, sending an alarm signal. The eye closing time of the driver is analyzed through the acquired facial image information, whether the driver is in the fatigue state can be judged more visually through the eye closing time, the accuracy of judging the driver in the fatigue state is improved, and the judgment error is reduced.
Description
Technical Field
The invention relates to the technical field of vehicle engineering, in particular to a method and a device for preventing fatigue driving and a vehicle.
Background
The fatigue judgment method in the prior art is basically an indirect fatigue monitoring method. Establishing a model for evaluating a fatigue event, acquiring signals of an angle, an angular velocity and a moment in an EPS steering sensor and signals of acceleration in each direction in an inertia sensor module in an ESC (electronic stability control) in the driving process of a vehicle, analyzing the acquired signals based on the model, judging whether the behavior of a driver belongs to fatigue driving, judging that a fatigue driving event occurs once if the behavior of the driver accords with the signals, increasing the fatigue level of the driver, and sending a prompt to the driver when the fatigue level of the driver exceeds a preset value.
The method cannot directly judge whether the driver is in a fatigue driving state or not, and easily causes judgment errors.
Disclosure of Invention
The invention aims to provide a method and a device for preventing fatigue driving and a vehicle, which can analyze the eye closing time of a driver through the acquired facial image information, can more intuitively judge whether the driver is in a fatigue state through the eye closing time, improve the accuracy of judging whether the driver is in the fatigue state and reduce the judgment error.
Embodiments of the invention may be implemented as follows:
in a first aspect, an embodiment of the present invention provides a method for preventing fatigue driving, where the method includes:
acquiring facial image information of a driver every preset time interval;
analyzing the eye-closing time of the driver in accordance with a plurality of pieces of the face image information;
judging whether the driver is in a fatigue driving state or not according to the eye closing time;
and if the driver is in the fatigue driving state, sending an alarm signal.
In an optional embodiment of the present invention, the method for preventing fatigue driving further comprises:
judging whether the driver is out of the fatigue driving state or not according to the duration time of the alarm signal;
and if the driver does not depart from the fatigue driving state, sending a take-over signal to a remote terminal, so that the remote terminal remotely controls the vehicle to automatically approach to parking or remotely drive the vehicle.
In an optional embodiment of the present invention, the step of determining whether the driver is out of the fatigue driving state according to the duration of the warning signal comprises:
determining whether the duration of the alarm signal is greater than or equal to an alarm threshold;
and if the duration is greater than or equal to the alarm threshold, judging that the driver does not depart from the fatigue driving state.
In an optional embodiment of the present invention, the step of determining whether the driver is in a fatigue driving state according to the eye-closing time includes:
judging whether the eye closing time is greater than or equal to a preset threshold value;
and if the eye closing time is greater than or equal to the preset threshold value, judging that the driver is in a fatigue driving state.
In an optional embodiment of the present invention, the method for preventing fatigue driving further comprises:
and if the driver is in the fatigue driving state, triggering a reminding signal to enable the driver to be out of the fatigue driving state.
In a second aspect, an embodiment of the present invention provides a fatigue driving prevention device, including:
the image signal acquisition module is used for acquiring facial image information of the driver once every preset time interval;
the eye closing time analysis module is used for analyzing the eye closing time of the driver according to the facial image information;
the fatigue state judging module is used for judging whether the driver is in a fatigue driving state according to the eye closing time;
and the alarm module is used for sending an alarm signal if the driver is in the fatigue driving state.
In a third aspect, an embodiment of the present invention provides a vehicle, where the vehicle includes a controller, and the controller is configured to implement the fatigue driving prevention method provided in the first aspect.
In an optional embodiment of the invention, the vehicle comprises a steering wheel, a plurality of button lamps are arranged on the steering wheel, the button lamps are electrically connected with the controller, and the controller is used for controlling any one of the button lamps to be turned on when the driver is in a fatigue driving state.
In an alternative embodiment of the present invention, the controller is further configured to determine that the driver is not out of the fatigue driving state if the button lamp operation time is greater than or equal to the duration.
In an alternative embodiment of the invention, the vehicle comprises a steering wheel, the steering wheel being provided with electrically conductive wires, the electrically conductive wires being electrically connected to the controller, the controller being configured to control the electrically conductive wires to be energized in the event that the driver is in a fatigue driving state.
The embodiment of the invention has the following beneficial effects: the anti-fatigue driving method comprises the steps of obtaining facial image information of a driver once every preset time interval; analyzing the eye-closing time of the driver according to the plurality of facial image information; judging whether the driver is in a fatigue driving state or not according to the eye-closing time; and if the driver is in a fatigue driving state, sending an alarm signal. The eye closing time of the driver is analyzed through the acquired facial image information, whether the driver is in the fatigue state can be judged more visually through the eye closing time, the accuracy of judging the driver in the fatigue state is improved, and the judgment error is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a block diagram of a vehicle according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a steering wheel of a vehicle according to an embodiment of the present invention.
Fig. 3 is a flowchart of steps S100 to S400 of a method for preventing fatigue driving according to an embodiment of the present invention.
Fig. 4 is a flowchart of the sub-steps of step S300 of the method for preventing fatigue driving according to the embodiment of the present invention.
Fig. 5 is a flowchart of steps S500-S700 of a method for preventing fatigue driving according to an embodiment of the present invention.
Fig. 6 is a flowchart of the sub-steps of step S500 of the method for preventing fatigue driving according to the embodiment of the present invention.
Fig. 7 is a block diagram of the fatigue driving prevention device according to the embodiment of the present invention.
Icon: 10-a vehicle; 11-a controller; 12-a steering wheel; 13-a button light; 14-conductive metal lines; 20-fatigue driving prevention means; 21-an image signal acquisition module; 22-eye closure time analysis module; 23-fatigue state judgment module; 24-an alarm module; 25-duration judging module; 26-a take-over module; 27-reminder module.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. indicate an orientation or a positional relationship based on that shown in the drawings or that the product of the present invention is used as it is, this is only for convenience of description and simplification of the description, and it does not indicate or imply that the device or the element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
Examples
Referring to fig. 1, an embodiment of the present invention provides a vehicle 10, where the vehicle 10 provided in this embodiment can analyze the eye-closing time of a driver through acquired facial image information, and can more intuitively determine whether the vehicle is in a fatigue state through the eye-closing time, so as to improve accuracy of determining that the vehicle is in the fatigue state, and reduce a determination error.
The vehicle 10 provided by the embodiment of the invention can be an engineering machine such as an excavator, a crane, a scraper, a compactor and the like, and can also be a vehicle such as a bus, a truck, a car and the like.
In the present embodiment, the vehicle 10 includes a controller 11, the controller 11 being configured to acquire face image information of the driver once every preset time interval; analyzing the eye-closing time of the driver according to the plurality of facial image information; judging whether the driver is in a fatigue driving state or not according to the eye-closing time; and if the driver is in a fatigue driving state, sending an alarm signal.
In this embodiment, the controller 11 calculates the eye-closing time of the driver according to the acquired facial image information, determines whether the driver is in a fatigue driving state according to the eye-closing time, and sends an alarm signal to remind the driver when the driver is in the fatigue state. In this embodiment, the eye closing time of the driver is analyzed through the acquired facial image information, and whether the driver is in the fatigue state can be judged more intuitively through the eye closing time, so that the accuracy of judging the driver in the fatigue state is improved, and the judgment error is reduced.
Referring to fig. 2, in the present embodiment, a plurality of button lamps 13 are disposed on the steering wheel 12, the button lamps 13 are electrically connected to the controller 11, and the controller 11 is configured to control any one of the button lamps 13 to be turned on when the driver is in a fatigue driving state.
In the embodiment, when the driver is in a fatigue state, the controller 11 controls and starts one button lamp 13 to light up to trigger the alarm signal, and the lighted button lamp 13 is mainly used for helping the driver to get out of the fatigue state. When the driver presses the lighted button lamp 13, the other button lamp 13 is lighted, and the driver presses the lighted button lamp 13 as instructed. The above process is repeated for a plurality of times, and the driver can consider that the current driver is out of the fatigue driving state according to the completion of the instruction.
When the driver is in a tired state, the button lamps 13 are turned on a plurality of times at random, and the driver sequentially presses the button lamps 13 in the order in which the button lamps 13 are turned on. That is, when one of the button lamps 13 is turned on, the driver presses the button lamp 13, the button lamp 13 is turned off, the other button lamp 13 is continuously turned on, and the driver continuously presses the button lamp 13 to repeat the above-described process a plurality of times, and the driver can be considered to have been out of the fatigue driving state when the driver presses the turned-on button lamp 13 as instructed.
In the present embodiment, the controller 11 is also configured to determine that the driver is not out of the fatigue driving state in a case where the button lamp 13 is on for a time period greater than or equal to the duration time.
When the working time of the button lamp 13 which is always on exceeds the duration, the button lamp 13 is not pressed at present, which indicates that the driver does not perform any operation at present, and the driver can be judged not to be out of the fatigue driving state.
In the present embodiment, the steering wheel 12 is provided with a conductive wire 14, the conductive wire 14 is electrically connected to the controller 11, and the controller 11 is configured to control the conductive wire 14 to be energized when the driver is in a fatigue driving state.
In this embodiment, a driver holds the steering wheel 12 with a hand while driving, and when the driver is determined to be in a fatigue driving state, the controller 11 controls the conductive metal wire 14 to be powered on, so that the driver can get an electric shock when holding the steering wheel 12 with the hand, thereby playing a role in reminding the driver and helping the driver to get out of the fatigue state.
In this embodiment, when the driver is in the fatigue driving state, the driver is reminded through various modes such as the alarm signal, the button lamp 13 and the control conductive wire 14 to be electrified, so that the driver can be out of the fatigue driving state. Adopt multiple mode can help the driver to break away from the driver fatigue state fast, factor of safety when improving the driver and driving.
Referring to fig. 3, an embodiment of the present invention further provides a method for preventing fatigue driving, where the method for preventing fatigue driving includes the following specific steps:
step S100, the face image information of the driver is acquired once every preset time.
In this embodiment, in the process of driving the vehicle 10 by the driver, the facial image information of the driver can be acquired at preset intervals, and whether the current driver is in a fatigue driving state can be directly judged through the facial image information of the driver, so that the probability of occurrence of misjudgment is reduced, and the judgment accuracy can be improved.
In the present embodiment, the preset time is very short, a large amount of face image information of the driver is collected in a short time, and a plurality of pieces of face image information are collated in the order of the collected time.
Step S200, the eye-closing time of the driver is analyzed based on the plurality of face image information.
In the present embodiment, the eye-closing time of the driver can be analyzed from the plurality of pieces of facial image information, and is short when the driver performs driving operation in a normal state, and may be in a fatigue driving state when the eye-closing time of the driver is long. Therefore, whether the driver is in a fatigue driving state can be judged according to the eye-closing time of the driver.
It is readily understood that the eye-closing time reflects the eye-closing frequency of the driver from another angle, the slower the eye-closing frequency is as the eye-closing time is longer. The eye closing frequency is faster when the eye closing time is shorter.
And step S300, judging whether the driver is in a fatigue driving state according to the eye closing time.
In this embodiment, when the eye-closing time of the driver is longer, it is indicated that the driver may be asleep and the current driver may be in a fatigue driving state, and whether the current driver is in the fatigue driving state may be intuitively determined according to the eye-closing time of the driver.
Referring to fig. 4, step S300 may include step S310 and step S320.
Step S310, judging whether the eye closing time is larger than or equal to a preset threshold value.
In the present embodiment, the longer the eye-closing time is, the greater the possibility that fatigue driving occurs during driving by the driver. The preset threshold may be set by the driver before driving according to the situation of the driver, or may be set by the vehicle 10 when leaving the factory.
In step S320, if the eye-closing time is greater than or equal to the preset threshold, it is determined that the driver is in a fatigue driving state.
In this embodiment, when the eye-closing time is greater than or equal to the preset threshold, it is described that the eye-closing time of the current driver is long, the consciousness is unclear, and it can be determined that the current driver is fatigued.
And step S400, if the driver is in a fatigue driving state, sending an alarm signal.
In the embodiment, when the driver is in the fatigue driving state, the alarm signal is sent to remind the driver, so that the driver can be out of the fatigue driving state.
The alarm signal may be an acoustic signal, an optical signal, or an electrical signal.
Referring to fig. 5, in step S500, it is determined whether the driver is out of the fatigue driving state according to the duration of the warning signal.
In the embodiment, when the driver is in the fatigue driving state, the alarm signal is sent to remind the driver, and when the driver is out of the fatigue driving state, the alarm signal is turned off. When the alarm signal is not turned off all the time, the driver can be considered not to be out of the fatigue driving state all the time.
Referring to fig. 6, step S500 may include step S510 and step S520.
Step S510, determining whether the duration of the alarm signal is greater than or equal to an alarm threshold.
In this embodiment, when the warning signal continues, it indicates that the driver has not performed the closing operation.
And step S520, if the duration is greater than or equal to the alarm threshold, judging that the driver does not leave the fatigue driving state.
In this embodiment, when the alarm time duration reaches the alarm threshold, if the driver has not left the fatigue driving state, it indicates that other operations are required when a traffic accident easily occurs.
Referring to fig. 5, in step S600, if the driver does not get out of the fatigue driving state, a take-over signal is sent to the remote terminal, so that the remote terminal remotely controls the vehicle 10 to automatically approach to parking or remotely drive the vehicle 10.
In the embodiment, when the driver is not out of the fatigue driving state all the time, the take-over signal is sent to the remote terminal, so that the remote terminal can take over the vehicle 10, and the vehicle 10 is prevented from being in an accident when running at a high speed. The remote terminal may remotely drive the vehicle 10 when taking over the vehicle 10 or control the vehicle 10 to park near by.
And step S700, if the driver is in the fatigue driving state, triggering a reminding signal to enable the driver to be out of the fatigue driving state.
In this embodiment, when the driver is in the fatigue driving state, the reminding signal can help the driver to get out of the fatigue driving state. The steering wheel 12 is provided with a conductive metal wire 14, the conductive metal wire 14 is electrically connected with the controller 11, and the controller 11 is used for controlling the conductive metal wire 14 to be electrified under the condition that the driver is in a fatigue driving state. The reminding signal is an electric signal.
Referring to fig. 7, an embodiment of the present invention further provides a fatigue driving prevention device 20, where the fatigue driving prevention device 20 includes:
and the image signal acquisition module 21 is used for acquiring facial image information of the driver once every preset time.
Step S100 provided in the embodiment of the present invention may be executed by the image signal acquiring module 21.
And the eye closing time analysis module 22 is used for analyzing the eye closing time of the driver according to the plurality of facial image information.
Step S200 provided in the embodiment of the present invention may be executed by the eye-closing time analysis module 22.
And the fatigue state judging module 23 is configured to judge whether the driver is in a fatigue driving state according to the eye-closing time.
Step S300 and the sub-steps thereof provided in the embodiment of the present invention may be executed by the fatigue state determining module 23.
And the alarm module 24 is used for sending an alarm signal if the driver is in a fatigue driving state.
Step S400 provided by the embodiment of the present invention may be executed by the alarm module 24.
And the duration judging module 25 is used for judging whether the driver is out of the fatigue driving state according to the duration of the alarm signal.
Step S500 and the sub-steps thereof provided by the embodiment of the present invention may be executed by the duration determining module 25.
And the take-over module 26 is used for sending a take-over signal to the remote terminal if the driver is not out of the fatigue driving state, so that the remote terminal remotely controls the vehicle 10 to automatically approach to parking or remotely drive the vehicle 10.
Step S600 provided by the embodiment of the present invention may be executed by the takeover module 26.
And the reminding module 27 is used for triggering a reminding signal if the driver is in the fatigue driving state so as to enable the driver to be separated from the fatigue driving state.
Step S700 provided in the embodiment of the present invention may be executed by the reminding module 27.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. A method of preventing fatigue driving, comprising:
acquiring facial image information of a driver every preset time interval;
analyzing the eye-closing time of the driver in accordance with a plurality of pieces of the face image information;
judging whether the driver is in a fatigue driving state or not according to the eye closing time;
and if the driver is in the fatigue driving state, sending an alarm signal.
2. The fatigue driving prevention method according to claim 1, further comprising:
judging whether the driver is out of the fatigue driving state or not according to the duration time of the alarm signal;
and if the driver does not depart from the fatigue driving state, sending a take-over signal to a remote terminal, so that the remote terminal remotely controls the vehicle (10) to automatically approach to parking or remotely drive the vehicle (10).
3. The fatigue driving prevention method according to claim 2, wherein the step of determining whether the driver is out of the fatigue driving state depending on the duration of the warning signal comprises:
judging whether the duration time of the alarm signal is greater than or equal to an alarm threshold value;
and if the duration is greater than or equal to the alarm threshold, judging that the driver does not depart from the fatigue driving state.
4. The fatigue driving prevention method according to claim 1, wherein the step of determining whether the driver is in a fatigue driving state according to the eye-closing time includes:
judging whether the eye closing time is greater than or equal to a preset threshold value;
and if the eye closing time is greater than or equal to the preset threshold value, judging that the driver is in a fatigue driving state.
5. The fatigue driving prevention method according to claim 1, further comprising:
and if the driver is in the fatigue driving state, triggering a reminding signal to enable the driver to be separated from the fatigue driving state.
6. An anti-fatigue driving device, characterized in that the anti-fatigue driving device (20) comprises:
the image signal acquisition module (21) is used for acquiring facial image information of the driver once every preset time interval;
an eye-closing time analysis module (22) for analyzing the eye-closing time of the driver from a plurality of pieces of the face image information;
the fatigue state judging module (23) is used for judging whether the driver is in a fatigue driving state according to the eye closing time;
and the alarm module (24) is used for sending an alarm signal if the driver is in the fatigue driving state.
7. A vehicle, characterized by comprising a controller (11), said controller (11) being adapted to implement the anti-fatigue driving method according to any of claims 1-5.
8. The vehicle of claim 7, characterized in that the vehicle (10) comprises a steering wheel (12), a plurality of button lamps (13) are arranged on the steering wheel (12), the button lamps (13) are electrically connected with the controller (11), and the controller (11) is used for controlling any one of the button lamps (13) to be turned on when the driver is in a fatigue driving state.
9. The vehicle according to claim 8, characterized in that the controller (11) is further configured to determine that the driver is not out of the fatigue driving state if the button lamp (13) is on for a time greater than or equal to a duration.
10. The vehicle according to claim 7, characterized in that the vehicle (10) comprises a steering wheel (12), a conductive wire (14) is arranged on the steering wheel (12), the conductive wire (14) is electrically connected with the controller (11), and the controller (11) is used for controlling the conductive wire (14) to be electrified when the driver is in a fatigue driving state.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011146967.2A CN112270808A (en) | 2020-10-23 | 2020-10-23 | Fatigue driving prevention method and device and vehicle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011146967.2A CN112270808A (en) | 2020-10-23 | 2020-10-23 | Fatigue driving prevention method and device and vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112957045A (en) * | 2021-02-04 | 2021-06-15 | 武汉理工大学 | Vehicle driver fatigue monitoring and remote intervention system and method based on 5G |
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Application publication date: 20210126 |
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