CN212569804U - Fatigue driving detection device - Google Patents
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- CN212569804U CN212569804U CN202021089491.9U CN202021089491U CN212569804U CN 212569804 U CN212569804 U CN 212569804U CN 202021089491 U CN202021089491 U CN 202021089491U CN 212569804 U CN212569804 U CN 212569804U
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Abstract
The utility model relates to a driver fatigue detection device, include: the lens base is arranged in the carriage and close to the position of the driver seat; the camera shooting module is arranged on the lens base and used for shooting a current side face image of a driver in the driving process; the characteristic extraction component is used for receiving the current side face image shot by the camera module and carrying out image recognition on the current side face image to obtain the current eye movement characteristic parameters of the driver; and the detection component is used for judging whether the driver is fatigue driving according to the comparison result of the current eye movement characteristic parameter and the preset normal eye movement characteristic parameter of the driver. The utility model discloses can solve the driver when wearing glasses and meeting photic formation facula, light spot, lead to the not high technical problem of driver fatigue discernment rate of accuracy.
Description
Technical Field
The utility model relates to a driver fatigue detection technical field, concretely relates to driver fatigue detection device.
Background
With the development of society, the progress of science and technology and the improvement of the living standard of people, vehicles in modern society are used more and more frequently, traffic safety also becomes a serious social problem which cannot be ignored in daily life of people, and the number of people who die and are injured due to traffic accidents is quite large every year. The statistical analysis of the traffic accidents shows that most of the traffic accidents are caused by human factors, wherein most of the human factors are caused by fatigue driving, and the problems are specifically reflected in that various phenomena such as visual deterioration, inattention, thinking ability reduction and the like can be caused by fatigue of a driver in the process of driving a vehicle, so that the problems of slow response, incapability of judging in time, slow action and the like are caused. The problems can be analyzed and judged according to the brain or eye state of the driver, and the current fatigue state of the driver can be timely reminded, so that the potential harm of fatigue driving of the driver is reduced.
At present, corresponding fatigue driving detection technologies exist at home and abroad, whether a driver is in fatigue driving or not is mostly judged by detecting the opening and closing conditions of the eyes of the driver, for example, the opening and closing conditions of the eyes of the driver are obtained by extracting behavior characteristics such as blink frequency and facial expressions of the driver.
In realizing the utility model discloses an in-process, the utility model discloses the people discovers that there is following technical problem in current driver fatigue's detection technology at least:
due to the fact that drivers have individual differences, some drivers wear myopia glasses, when wearing the myopia glasses, when head-on light irradiates, light spots and light spots can be formed on head-on light of glasses lenses of the drivers, eye features cannot be correctly extracted on collected face images of the drivers, interference exists, and the accuracy of fatigue recognition results is low.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a driver fatigue detection device to solve the driver and when wearing glasses and meeting photic formation facula, light spot, lead to the not high technical problem of driver fatigue discernment rate of accuracy.
Therefore, the embodiment of the utility model provides a fatigue driving detection device is provided, include:
the lens base is arranged in the carriage and close to the position of the driver seat;
the camera shooting module is arranged on the lens base and used for shooting a current side face image of a driver in the driving process;
the characteristic extraction component is used for receiving the current side face image shot by the camera module and carrying out image recognition on the current side face image to obtain the current eye movement characteristic parameters of the driver; and
and the detection component is used for judging whether the driver is in fatigue driving or not according to the comparison result of the current eye movement characteristic parameter and the preset normal eye movement characteristic parameter of the driver.
In an optional embodiment, the device further comprises a lens adjusting mechanism fixedly arranged in the carriage close to the driver seat;
the camera module is arranged on the front end surface of the front fixing part, and the rear fixing part is movably connected with the lens adjusting mechanism;
the lens adjusting mechanism is used for adjusting the position of the lens base.
In an optional embodiment, the lens adjusting mechanism includes a further rack guide rail and a driving motor, the stepping rack guide rail is provided with a guide rail groove and a rack, an output shaft of the driving motor is connected with a gear, and the gear is engaged with the rack;
the lens base is provided with a sliding column which is embedded in the guide rail groove;
the driving motor drives the gear to rotate when rotating, so that the lens base is guided by the guide rail groove and the sliding column to adjust the position of the lens base.
In an optional embodiment, the strut is fixedly disposed on a lower wall surface of the rear fixing portion near the end, the rear fixing portion is provided with a through hole corresponding to the lower wall surface of the driving motor, and an output shaft of the driving motor extends out of the through hole.
In an optional embodiment, the rear fixing portion is provided with an accommodating cavity, and the driving motor is connected to a wall surface of the accommodating cavity and is located in the accommodating cavity.
In an optional embodiment, the vehicle further comprises a packaging body fixedly arranged in the compartment close to the driver seat;
the lens adjusting mechanism is fixedly arranged on the upper wall surface of the packaging body, and is fixedly arranged at a position close to a driver seat in a carriage through the packaging body.
In an optional embodiment, the lighting system further includes a first ambient light recognition sensor, a light supplement controller and a light supplement lamp, where the first ambient light recognition sensor and the light supplement lamp are disposed on the front fixing portion;
the first ambient light recognition sensor is used for acquiring the intensity parameter of the current ambient light in the vehicle in the driving process and sending a light supplement instruction to the light supplement controller when the intensity parameter of the current ambient light in the vehicle is within a preset intensity threshold range; the light supplement controller is used for controlling the light supplement lamp to be turned on according to the light supplement instruction so as to supplement light.
In an optional embodiment, the front fixing portion is cylindrical, the first ambient light recognition sensor is disposed on a circumferential wall surface of the front fixing portion, and the light supplement lamp is a circular soft light strip disposed on a front end surface of the front fixing portion.
In an optional embodiment, the system further comprises a second ambient light recognition sensor and a lens conversion controller;
the camera module comprises a CMOS camera component and an infrared CCD camera component, and the second ambient light identification sensor, the CMOS camera component and the infrared CCD camera component are all arranged on the front fixing part;
the second ambient light recognition sensor is used for collecting the intensity parameter of the current in-vehicle ambient light in the driving process and sending a corresponding lens control instruction to the lens conversion controller according to the comparison result of the intensity parameter of the current in-vehicle ambient light and a preset intensity threshold value; the lens conversion controller is used for controlling the CMOS camera shooting assembly and the infrared CCD camera shooting assembly to start or sleep according to the lens control instruction so as to shoot a side face image of a driver.
In an optional implementation manner, the feature extraction component is further configured to control the angular displacement output by the driving motor according to a position relationship between a first plane where an optical axis of a camera of the camera module is located and a second plane where a side face contour of a driver in the side face image is located, so that the first plane where the optical axis of the camera is located is perpendicular to the second plane where the side face contour of the driver is located.
The embodiment of the utility model provides a following advantage has at least:
the side face image of the driver is used as judgment data for detecting fatigue driving of the driver, and the side face image collected by the camera module is not influenced by light spots and light spots formed by the head-on light of glasses of the driver, so that the eye movement characteristic parameters of the driver can be accurately extracted through the collected side face image, the fatigue driving of the driver is detected according to the eye movement characteristic parameters, and the technical problem that the fatigue driving identification accuracy is not high due to the fact that the driver wears the glasses and the head-on light spots and the light spots are formed by the head-on light can be solved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a fatigue driving detection device according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a fatigue driving detection device according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a fatigue driving detection device according to an embodiment of the present invention.
Fig. 4 is a cross-sectional view of a fatigue driving detection device according to an embodiment of the present invention.
Fig. 5 is a schematic structural diagram of a fatigue driving detection device according to an embodiment of the present invention.
Fig. 6 is a schematic structural diagram of a fatigue driving detection device according to an embodiment of the present invention.
Fig. 7 is a schematic structural view of a light supplement module according to an embodiment of the present invention.
Fig. 8 is a schematic structural diagram of a fatigue driving detection device according to an embodiment of the present invention.
Fig. 9 is a schematic structural diagram of a lens switching module according to an embodiment of the present invention.
The reference numbers are as follows:
1-lens base, 11-rear fixed part, 12-front fixed part, 13-sliding column, 14-accommodating cavity;
2-a camera module, 21-a CMOS camera module and 22-an infrared CCD camera module;
3-a feature extraction component;
4-a detection component;
5-lens adjusting mechanism, 51-stepping rack guide rail, 52-driving motor, 53-guide rail groove, 54-rack, 55-gear;
6-packaging body;
71-a first ambient light recognition sensor, 72-a light supplement controller, 73-a light supplement lamp;
81-second ambient light recognition sensor, 82-lens switching controller.
Detailed Description
Various exemplary embodiments, features and aspects of the present disclosure will be described in detail below with reference to the accompanying drawings. In the drawings, like reference numbers can indicate functionally identical or similar elements. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
In addition, numerous specific details are set forth in the following detailed description of the invention in order to provide a better understanding of the invention. It will be understood by those skilled in the art that the present invention may be practiced without some of these specific details. In some instances, well known means have not been described in detail in order to avoid obscuring the present invention.
An embodiment of the present invention provides a fatigue driving detection device, fig. 1 is a schematic structural diagram of the device of this embodiment, referring to fig. 1, the device of this embodiment includes a lens base 1 disposed in a carriage near a driver seat, a camera module 2 disposed on the lens base 1, a feature extraction component 3, and a detection component 4; the camera module 2 is used for shooting the current side face image of the driver in the driving process; the feature extraction component 3 is used for receiving the current side face image shot by the camera module 2, and carrying out image recognition on the current side face image to obtain the current eye movement feature parameters of the driver; the detection component 4 is used for judging whether the driver is fatigue driving according to the comparison result of the current eye movement characteristic parameter and the preset normal eye movement characteristic parameter of the driver.
Specifically, the side face image refers to a left side face image or a right side face image of the driver, and different driving rules may be adopted by different countries/regions, for example, the driving rule of driving to the right in china, and the driving rule of driving to the left in england. When a driving rule of driving to the right is adopted, a driver sits on a left seat of the front seat, at the moment, in order to facilitate the installation of the camera module 2 and the acquisition of side face images, the camera module 2 can be installed at a position close to the left seat of the front seat, and the camera module 2 acquires the left side face image of the driver; wherein, when the rule of traveling that the adoption leaned on to go left, the driver sits the seat on the right of front seat, and at this moment, for the convenience of the installation and the side face image acquisition of module 2 of making a video recording, then can install module 2 of making a video recording in the position of the seat on the right that is close to front seat, the right side face image that the driver was gathered to module 2 of making a video recording.
It can be understood that the lens base 1 can be directly mechanically connected with the mechanical structure in the carriage, and also can be indirectly mechanically connected with the mechanical structure in the carriage through the connecting piece, as long as the installation position of the lens base 1 can enable the shooting angle of the camera module 2 to shoot the side face contour of the driver.
The eye movement characteristic parameter in this embodiment is preferably but not limited to at least one of a distance parameter between the upper and lower eyelids when the eyes are open, a blinking time parameter, and an eye closing time ratio parameter (Per-close), and of course, the eye movement characteristic may also be other characteristics related to the eyes, and this embodiment is not particularly limited.
It should be noted that the feature extraction of the image is a widely applied technical means in the field of image recognition, and the principle of the feature extraction of the image is to determine a detection target by using different pixel values of pixel points on the image, where the detection target is an eye in this embodiment. Therefore, based on the side face image acquired in the present embodiment, a person skilled in the art knows how to extract the eye movement features, and therefore, the present embodiment does not limit the specific configuration of the feature extraction component 3, and any technical means for extracting the eye movement features may be applied to the present embodiment, which should be understood to be within the scope of the present embodiment.
It should be noted that the gist of the present embodiment is to use a side face image of a driver as a determination criterion for determining fatigue driving detection, and the extracted feature data are eye movement features no matter the side face image or the front face image, and technical means for performing fatigue driving detection based on the eye movement features are widely applied in the field of fatigue driving detection, so that, based on the eye movement feature parameters extracted in the present embodiment, how to perform fatigue driving detection is well known by those skilled in the art, therefore, the specific configuration of the detection component 4 is not limited in the present embodiment, and the present embodiment may be applied to combine any technical means for performing fatigue driving detection based on eye movement features, such as a PERCLOS algorithm, wherein the PERCLOS algorithm also includes the feature extraction technical means, and it should be understood that the technical means are within the protection scope of the present embodiment.
The installation positions of the feature extraction component 3 and the detection component 4 are not specifically limited, and only the feature extraction component and the camera module 2 need to be in communication connection in a data line or wireless communication mode to complete data transmission.
When the current driver is detected to be in a fatigue state, warning voice is sent to the driver through the vehicle-mounted assistant, and the driver in the fatigue state is prompted to be awake.
The embodiment device is when using, regard as the judgement data that detects driver fatigue driving with the side face image of driver, because the side face image of gathering of camera module 2 can not receive the influence that driver's glasses lens meet one's face and receive light and form facula, light spot, consequently, the eye movement characteristic parameter of driver can be drawed accurately through the side face image of gathering, driver fatigue driving detects according to eye movement characteristic parameter, can solve the driver and wear glasses and meet one's face and form facula, light spot when, lead to fatigue driving discernment rate of accuracy not high technical problem.
In one embodiment, fig. 2 is a schematic structural diagram of the device of the present embodiment, referring to fig. 2, the device further includes a lens adjusting mechanism 5 fixedly disposed in the vehicle compartment near the driver's seat; the lens base 1 comprises a rear fixing part 11 and a front fixing part 12, the camera module 2 is arranged on the front end face of the front fixing part 12, and the rear fixing part 11 is movably connected with the lens adjusting mechanism 5; the lens adjusting mechanism 5 is used for adjusting the position of the lens base 1.
Particularly, because there is the difference in height, the position of sitting habit of different drivers, consequently, for the convenience of adjusting the position of the module of making a video recording 2 to make the module of making a video recording 2 can shoot driver's side face image completely, set up camera lens guiding mechanism 5 in this embodiment. It is understood that the lens adjusting mechanism 5 may be adjusted manually or automatically, and this embodiment is not limited in particular, and should be understood as being within the protection scope of this embodiment.
In an embodiment, fig. 3-4 are schematic structural views of the device of this embodiment, referring to fig. 3-4, the lens adjusting mechanism 5 includes a stepping rack 54 guide rail 51 and a driving motor 52, the stepping rack 54 guide rail 51 is provided with a guide rail groove 53 and a rack 54, an output shaft of the driving motor 52 is connected to a gear 55, and the gear 55 is engaged with the rack 54; a sliding column 13 is arranged on the lens base 1, and the sliding column 13 is embedded in the guide rail groove 53; when the driving motor 52 rotates, the gear 55 is driven to rotate, so that the lens base 1 adjusts the position of the lens base 1 under the guidance of the guide rail groove 53 and the sliding column 13.
Specifically, the guide rail 51 of the step rack 54 and the rack 54 are both in a strip shape, one wall surface of the guide rail 51 of the step rack 54 is provided with a strip-shaped guide groove 53, and the other wall surface forms the rack 54. The sliding column 13 is embedded in the guide rail groove 53, and can be matched with the guide rail groove 53 to guide the lens base 1 to move relative to the guide rail 51 of the stepping rack 54, and can be matched with two end faces of the guide rail groove 53 to limit the lens base 1. In this embodiment, the driving motor 52 is used as a driving mechanism to drive the lens base 1 for position adjustment, the driving motor 52 drives the gear 55 to rotate when rotating, and the gear 55 is engaged with the rack 54, so that the lens base 1 can move along the length direction of the guide rail 51 of the step rack 54 under the guidance of the guide rail groove 53 and the slide column 13, thereby realizing the position adjustment of the lens base 1.
It is understood that the start of the driving motor 52, more specifically, the angular displacement output by the driving motor 52, may be manually set and adjusted by the driver, or adjusted according to the condition of the currently acquired side face image, so that the shooting angle of the camera module 2 can shoot the side face profile of the driver, which is not particularly limited in this embodiment, and should be understood as being within the protection scope of this embodiment.
In this embodiment, referring to fig. 4, preferably, the sliding column 13 is fixedly disposed on a lower wall surface of the rear fixing portion 11 near the end, a through hole is formed on the lower wall surface of the rear fixing portion 11 corresponding to the driving motor 52, and an output shaft of the driving motor 52 extends out of the through hole.
Specifically, the step rack 54 guide rail 51 is located below the lower wall surface of the end close to the rear fixing portion 11, the step rack 54 guide rail 51 is fixedly connected with the mechanical structure in the vehicle compartment, that is, the step rack 54 guide rail 51 is fixed, as shown in fig. 4, the sliding column 13 and the gear 55 achieve the function of clamping the step rack 54 guide rail 51, thereby the lens mount 1 can be movably disposed on the step rack 54 guide rail 51.
In this embodiment, referring to fig. 4, preferably, the rear fixing portion 11 is provided with an accommodating cavity 14, and the driving motor 52 is connected to a wall surface of the accommodating cavity 14 and is located in the accommodating cavity 14.
Specifically, the driving motor 52 is disposed in the accommodating cavity 14 of the rear fixing portion 11, so that the overall structural volume of the fatigue recognition detecting apparatus can be reduced, and the apparatus structure can be more compact.
In an embodiment, fig. 5 is a schematic structural view of the device of the present embodiment, referring to fig. 5, further including a packaging body 6 fixedly disposed in a vehicle compartment near a driver seat; the lens adjusting mechanism 5 is fixedly arranged on the upper wall surface of the packaging body 6, so as to be fixedly arranged in a position close to a driver seat in a carriage through the packaging body 6.
Particularly, in order to facilitate the installation of the fatigue driving detection device, the embodiment is provided with the packaging body 6, the lens adjusting mechanism 5 and the lens base 1 are assembled on the packaging body 6, and when the device is used, the packaging body 6 and a mechanical structure in a carriage are connected and fixed through a connecting piece, so that the device is convenient to install and use.
In an embodiment, referring to fig. 6 to 7, the lighting system further includes a first ambient light recognition sensor 71, a light supplement controller 72, and a light supplement lamp 73, where the first ambient light recognition sensor 71 and the light supplement lamp 73 are disposed on the front fixing portion 12; the first ambient light recognition sensor 71 is configured to collect an intensity parameter of current ambient light in the vehicle during driving, and send a light supplement instruction to the light supplement controller 72 when the intensity parameter of the current ambient light in the vehicle is within a preset intensity threshold range; the light supplement controller 72 is configured to control the light supplement lamp 73 to be turned on according to the light supplement instruction to supplement light.
Specifically, in the embodiment, the image capturing module 2 is preferably but not limited to a CMOS image capturing module 21, and when the first ambient light recognition sensor 71 recognizes that the light in the vehicle does not satisfy that the CMOS image capturing module 21 has good imaging quality, the first ambient light recognition sensor 71 sends a light supplement instruction to the light supplement controller 72, and the light supplement controller 72 controls the soft light supplement lamp 73 to be turned on, so as to provide light gain for the CMOS image capturing module 21, and obtain an image with good imaging quality. More specifically, for example, when the intensity parameter of the ambient light in the vehicle is smaller than a first preset intensity threshold and larger than a second preset intensity threshold, the soft light supplement lamp 73 is controlled to be turned on at a first brightness, and when the intensity parameter of the ambient light in the vehicle is smaller than the second preset intensity threshold, the soft light supplement lamp 73 is controlled to be turned on at a second brightness. The above are merely examples, and based on the content of the present embodiment, it is well known to those skilled in the art that the present embodiment may be modified according to the actual technical requirements, and the present embodiment is not particularly limited, and should be understood as being within the protection scope of the present embodiment.
In this embodiment, referring to fig. 6, the front fixing portion 12 is preferably a cylinder, the first ambient light recognition sensor 71 is disposed on a circumferential wall surface of the front fixing portion 12, and the supplementary lighting lamp 73 is preferably, but not limited to, a circular soft lighting strip disposed on a front end surface of the front fixing portion 12.
For example, the first ambient light recognition sensor 71 may be one, or a plurality of sensors may be uniformly distributed on a circular path of one of the front fixing portions 12.
Specifically, the light of the soft light supplement lamp 73 is soft light that is diffusely reflected, and is not dazzling, and plays a role of supplementing light to the left face of the driver under a condition that the light effect is not good. The diffuse reflection soft light can prevent dazzling interference to a driver on the premise of providing a light supplementing effect.
In an embodiment, the soft light supplement lamp 73 may be designed to be strip-shaped, and is mounted on the left side of the driving seat on the vehicle body corresponding to the left face side of the head of the human body (located in the vehicle interior).
In an embodiment, referring to fig. 8-9, the system further includes a second ambient light recognition sensor 81, a lens conversion controller 82; the camera module 2 comprises a CMOS camera module 21 and an infrared CCD camera module 22, and the second ambient light recognition sensor 81, the CMOS camera module 21 and the infrared CCD camera module 22 are all disposed on the front fixing portion 12; the second ambient light recognition sensor 81 is configured to collect an intensity parameter of the current in-vehicle ambient light during driving, and send a corresponding lens control instruction to the lens conversion controller 82 according to a comparison result between the intensity parameter of the current in-vehicle ambient light and a preset intensity threshold; the lens conversion controller 82 is configured to control the CMOS camera module 21 and the infrared CCD camera module 22 to start or sleep according to the lens control instruction, so as to capture a side face image of the driver.
Specifically, when the second ambient light recognition sensor 81 recognizes that the light in the vehicle meets the requirement that the CMOS camera module 21 has good imaging quality, the second ambient light recognition sensor 81 sends an instruction to start the CMOS camera module 21 to the lens conversion controller 82, the CMOS camera module 21 is awakened by the lens conversion controller 82, the left face image of the driver is collected, and the infrared CCD camera module 22 is in a sleep state while the CMOS camera module 21 is awakened.
When the second ambient light recognition sensor 81 recognizes that the light in the vehicle does not satisfy the condition that the CMOS camera module 21 has better imaging quality, the second ambient light recognition sensor 81 sends an instruction to start the infrared CCD camera module 22 to the lens conversion controller 82, the infrared CCD camera module 22 is awakened by the lens conversion controller 82 to acquire the left face image of the driver, and the CMOS camera module 21 is in a sleep state while the infrared CCD camera module 22 is awakened.
It is understood that the preset intensity threshold range corresponding to the requirement that the CMOS image pickup device 21 has good imaging quality may be set according to specific technical requirements, and is not specifically limited in this embodiment, and it should be understood that the preset intensity threshold range is within the protection scope of this embodiment.
In an embodiment, the feature extraction component 3 is further configured to control the angular displacement output by the driving motor 52 according to a position relationship between a first plane where an optical axis of the camera module 2 is located and a second plane where a side face contour of the driver is located, so that the plane where the optical axis of the camera is located is perpendicular to the second plane where the side face contour of the driver is located.
Specifically, when shooting a side face image, the camera module 2 sends parameter information of a first plane where an optical axis of the camera is located to the feature extraction component 3, the feature extraction component 3 performs image recognition on the side face image to obtain parameter information of a second plane where a side face outline of a driver is located, the feature extraction component 3 can determine the position relationship between the first plane and the second plane according to the parameter information of the second plane, and further controls the angular displacement output by the driving motor 52 according to the position relationship between the first plane where the optical axis of the camera module 2 is located and the second plane where the side face outline of the driver is located, so that in the automobile driving process, the plane where the optical axis of the camera is located is always perpendicular to the second plane where the side face outline of the driver is located.
While various embodiments of the present invention have been described above, the above description is intended to be illustrative, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (9)
1. A fatigue driving detecting device, characterized by comprising:
the lens base is arranged in the carriage and close to the position of the driver seat; the lens base comprises a rear fixing part and a front fixing part;
the camera module is arranged on the front end face of the front fixing part and is used for shooting the current side face image of a driver in the driving process;
the lens adjusting mechanism is fixedly arranged in the carriage close to the driver seat and movably connected with the rear fixing part; the lens adjusting mechanism is used for adjusting the position of the lens base;
the characteristic extraction component is used for receiving the current side face image shot by the camera module and carrying out image recognition on the current side face image to obtain the current eye movement characteristic parameters of the driver; and
and the detection component is used for judging whether the driver is in fatigue driving or not according to the comparison result of the current eye movement characteristic parameter and the preset normal eye movement characteristic parameter of the driver.
2. The fatigue driving detecting device according to claim 1, wherein the lens adjusting mechanism comprises a stepping rack guide rail and a driving motor, the stepping rack guide rail is provided with a guide rail groove and a rack, an output shaft of the driving motor is connected with a gear, and the gear is engaged with the rack;
the lens base is provided with a sliding column which is embedded in the guide rail groove;
the driving motor drives the gear to rotate when rotating, so that the lens base is guided by the guide rail groove and the sliding column to adjust the position of the lens base.
3. The fatigue driving detecting device according to claim 2, wherein the strut is fixedly disposed on a lower wall surface of the rear fixing portion near the end, the rear fixing portion has a through hole corresponding to the lower wall surface of the driving motor, and the output shaft of the driving motor extends out of the through hole.
4. The fatigue driving detecting device according to claim 2, wherein the rear fixing portion has an accommodating cavity, and the driving motor is connected to a wall surface of the accommodating cavity and is located in the accommodating cavity.
5. The fatigue driving detecting device according to claim 1, further comprising a package fixedly provided in a vehicle compartment in proximity to a driver's seat position;
the lens adjusting mechanism is fixedly arranged on the upper wall surface of the packaging body, and is fixedly arranged at a position close to a driver seat in a carriage through the packaging body.
6. The fatigue driving detection apparatus according to claim 2, further comprising a first ambient light recognition sensor, a light supplement controller, and a light supplement lamp, the first ambient light recognition sensor and the light supplement lamp being disposed on the front fixing portion;
the first ambient light recognition sensor is used for acquiring the intensity parameter of the current ambient light in the vehicle in the driving process and sending a light supplement instruction to the light supplement controller when the intensity parameter of the current ambient light in the vehicle is within a preset intensity threshold range; the light supplement controller is used for controlling the light supplement lamp to be turned on according to the light supplement instruction so as to supplement light.
7. The fatigue driving detecting device according to claim 6, wherein the front fixing portion is cylindrical, the first ambient light recognition sensor is disposed on a circumferential wall surface of the front fixing portion, and the light supplement lamp is a circular soft light strip disposed on a front end surface of the front fixing portion.
8. The fatigue driving detecting device according to claim 2, further comprising a second ambient light recognition sensor, a lens changeover controller;
the camera module comprises a CMOS camera component and an infrared CCD camera component, and the second ambient light identification sensor, the CMOS camera component and the infrared CCD camera component are all arranged on the front fixing part;
the second ambient light recognition sensor is used for collecting the intensity parameter of the current in-vehicle ambient light in the driving process and sending a corresponding lens control instruction to the lens conversion controller according to the comparison result of the intensity parameter of the current in-vehicle ambient light and a preset intensity threshold value; the lens conversion controller is used for controlling the CMOS camera shooting assembly and the infrared CCD camera shooting assembly to start or sleep according to the lens control instruction so as to shoot a side face image of a driver.
9. The fatigue driving detection device according to claim 2, wherein the feature extraction component is further configured to control the angular displacement output by the driving motor according to a positional relationship between a first plane on which an optical axis of the camera module is located and a second plane on which a side face contour of the driver is located in the side face image, so that the first plane on which the optical axis of the camera is located is perpendicular to the second plane on which the side face contour of the driver is located.
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| CN202021089491.9U CN212569804U (en) | 2020-06-12 | 2020-06-12 | Fatigue driving detection device |
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| CN202021089491.9U CN212569804U (en) | 2020-06-12 | 2020-06-12 | Fatigue driving detection device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112615997A (en) * | 2020-12-29 | 2021-04-06 | 北京嘀嘀无限科技发展有限公司 | Camera lens adjusting device, driving assisting equipment and vehicle |
| WO2021249239A1 (en) * | 2020-06-12 | 2021-12-16 | 广州汽车集团股份有限公司 | Drowsy driving detection method and system thereof, and computer device |
| CN114572115A (en) * | 2022-03-03 | 2022-06-03 | 安徽航途智能科技有限公司 | Health information monitoring device for preventing driver from fatigue driving |
| CN113807126B (en) * | 2020-06-12 | 2024-07-16 | 广州汽车集团股份有限公司 | Fatigue driving detection method and system, computer equipment and storage medium thereof |
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2020
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| WO2021249239A1 (en) * | 2020-06-12 | 2021-12-16 | 广州汽车集团股份有限公司 | Drowsy driving detection method and system thereof, and computer device |
| CN113807126A (en) * | 2020-06-12 | 2021-12-17 | 广州汽车集团股份有限公司 | Fatigue driving detection method and system, computer equipment and storage medium |
| CN113807126B (en) * | 2020-06-12 | 2024-07-16 | 广州汽车集团股份有限公司 | Fatigue driving detection method and system, computer equipment and storage medium thereof |
| CN112615997A (en) * | 2020-12-29 | 2021-04-06 | 北京嘀嘀无限科技发展有限公司 | Camera lens adjusting device, driving assisting equipment and vehicle |
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