Vehicle fatigue detection camera arrangement method and device, storage medium and vehicle

Abstract

The invention relates to a vehicle fatigue detection camera arrangement method and device, a storage medium and a vehicle. The vehicle fatigue detection camera arrangement method belongs to the technical field of vehicle manufacturing, and comprises the following steps: determining the position of a vehicle A column in a geometric data model through the geometric data model in a vehicle body cab; determining a camera installation area on the A column according with the parameter definition of the A column obstacle angle and the front view field on the basis of the parameter definition of the A column obstacle angle and the front view field and the view field area of a to-be-installed camera, wherein the parameter definition of the A column obstacle angle and the front view field is preset; and adjusting the mounting position of the camera in the camera mounting area based on the size structure of the to-be-mounted camera and the direct sunlight characteristic of the position of the camera so as to determine a camera arrangement interval meeting the fatigue monitoring effect. In this way, the proper position where the camera is installed on the A column can be determined, and therefore the effect that the visual field of a driver is not affected while the fatigue state of a person is detected through the camera is achieved.

Description

Technical Field

[0001] The present disclosure relates to the field of vehicle manufacturing technology, and in particular to a vehicle fatigue detection camera arrangement method, a vehicle fatigue detection camera arrangement device, a storage medium, and a vehicle. Background Art

[0002] Light commercial vehicles are commonly used for urban and intercity delivery, small-scale transport, and other applications. Drivers often face long hours behind the wheel or frequently engage in loading and unloading operations, which can easily lead to fatigue. Fatigue driving has become a serious factor affecting road traffic safety. Therefore, it is crucial to deploy fatigue detection cameras in appropriate locations to monitor driver fatigue. Summary of the Invention

[0003] In view of this, the embodiments of the present disclosure are intended to provide a vehicle fatigue detection camera arrangement method, a vehicle fatigue detection camera arrangement device, a storage medium, and a vehicle.

[0004] The technical solution of the present disclosure is achieved as follows:

[0005] In a first aspect, the present disclosure provides a method for arranging vehicle fatigue detection cameras.

[0006] The vehicle fatigue detection camera arrangement method provided by the embodiment of the present disclosure includes:

[0007] Determining the position of the vehicle's A-pillar in the geometric data model using the vehicle body and cab geometry model;

[0008] Determining a camera installation area on the A-pillar that meets the parameters of the A-pillar obstruction angle and the forward field of view based on predetermined requirements and the field of view of the camera to be installed;

[0009] Based on the size structure of the camera to be installed and the direct sunlight characteristics of the camera position, the installation position of the camera in the camera installation area is adjusted to determine the camera layout range that meets the fatigue monitoring effect.

[0010] In some embodiments, determining a camera installation area on the A-pillar that meets the parameter definitions of the A-pillar obstruction angle and the forward field of view based on predetermined requirements and the field of view of the camera to be installed includes:

[0011] Determining that the A-pillar obstacle angle is less than a predetermined angle required for safe driving of the vehicle;

[0012] Determining the parameters of the forward field of view to be defined as the forward field of view range required for safe driving of the vehicle;

[0013] Determine whether the field of view of the camera to be installed covers the eye ellipses of people with various body characteristics when riding in a vehicle;

[0014] Based on the fact that the A-pillar obstruction angle is less than a predetermined angle required for safe vehicle driving, that the parameters of the forward field of view define a forward field of view range required for safe vehicle driving, and that the field of view area of the camera to be installed covers the human eye ellipse area of a person with various human characteristics when riding in the vehicle, as limiting conditions for the camera installation area, a camera installation area on the A-pillar that meets the parameters of the A-pillar obstruction angle and the forward field of view is determined.

[0015] In some embodiments, the field of view of the camera to be installed covers the eye ellipsoidal area of a person with various body characteristics when riding in a vehicle, including:

[0016] When the optical axis of the camera and the first connecting line are at the same position, the field of view of the camera to be installed covers the human eye ellipse area of people with various human features when riding in the vehicle;

[0017] Among them, the optical axis of the camera is a straight line through the center of the camera lens through the center of the camera field of view; the first connecting line is a line between the center of the camera lens and the hard point of the person's field of view; among them, the multiple human body features include fat, thin, tall, and short.

[0018] In some embodiments, determining that the A-pillar obstacle angle is less than a predetermined angle required for safe driving of the vehicle includes:

[0019] Determining a predetermined R point and a vehicle seat back angle; wherein the R point is a reference point specified by the vehicle manufacturer for each seating position;

[0020] identifying a specific cross-section intersecting the A-pillar based on the predetermined R point and the vehicle seat back angle;

[0021] Based on the specific cross-section of the A-pillars, combined with the farthest point of the A-pillars and the installation state of the camera on the A-pillars, the obstacle angle of the A-pillar of the vehicle body where the camera is installed is determined.

[0022] In some embodiments, adjusting the installation position of the camera in the camera installation area based on the size structure of the camera to be installed and the direct sunlight characteristics of the camera position to determine the camera arrangement range that meets the fatigue monitoring effect includes:

[0023] In combination with the size structure of the camera to be installed, and based on the standard that sunlight cannot directly hit the camera lens, the installation position of the camera in the camera installation area is adjusted to determine the camera layout range that meets the fatigue monitoring effect.

[0024] In some embodiments, the identifying a specific cross-section intersecting the A-pillar based on the predetermined R point and the vehicle seat back angle includes:

[0025] Determining the center of the human eye based on the predetermined R point and the vehicle seat back angle;

[0026] Based on the center point of the human eye and the offset angle determined by affecting the human eye's field of view, a specific cross-section intersecting the A-pillar is identified; wherein the offset angle determined by affecting the human eye's field of view includes a first offset angle that is offset upward with the center point of the human eye as the base point and a second offset angle that is offset downward with the center point of the human eye as the base point.

[0027] In some embodiments, identifying a specific cross-section intersecting the A-pillar based on the center point of the human eye and an offset angle determined to affect the human eye's field of view includes:

[0028] identifying a first specific cross-section intersecting the A-pillar based on the center point of the human eye and a first offset angle determined to affect the field of view of the human eye;

[0029] identifying a second specific cross-section intersecting the A-pillar based on the center point of the human eye and a second offset angle determined to affect the field of view of the human eye;

[0030] The determining of the obstacle angle of the A-pillar of the vehicle body where the camera is installed based on the specific cross-section of the A-pillar, in combination with the farthest point of the A-pillar and the installation state of the camera on the A-pillar, includes:

[0031] Determining a first cross-section projection within an obstacle angle demarcation plane based on the first specific cross-section and the installation state of the camera on the A-pillar;

[0032] Determining a second cross-section projection within the obstacle angle demarcation plane based on the second specific cross-section and the installation state of the camera on the A-pillar;

[0033] Based on the first cross-sectional projection and the second cross-sectional projection, the vehicle body A-pillar obstacle angle formed in the obstacle angle demarcation plane is determined; wherein, the obstacle angle demarcation plane is determined based on the center point of the human eye and a predetermined azimuth point.

[0034] In a second aspect, the present disclosure provides a vehicle fatigue detection camera arrangement device, comprising:

[0035] A first determining module is used to determine the position of the vehicle A-pillar in the geometric data model based on the geometric data model of the vehicle body and the cab;

[0036] a second determining module for determining, based on predetermined parameter definitions of the A-pillar obstruction angle and the forward field of view and the field of view of the camera to be installed, a camera installation area on the A-pillar that meets the parameter definitions of the A-pillar obstruction angle and the forward field of view;

[0037] The third determination module is used to adjust the installation position of the camera in the camera installation area based on the size structure of the camera to be installed and the direct sunlight characteristics of the camera position to determine the camera arrangement range that meets the fatigue monitoring effect.

[0038] In a third aspect, the present disclosure provides a computer-readable storage medium on which a vehicle fatigue detection camera arrangement program is stored. When the vehicle fatigue detection camera arrangement program is executed by a processor, the vehicle fatigue detection camera arrangement method described in the first aspect is implemented.

[0039] In a fourth aspect, the present disclosure provides a vehicle equipped with a camera; the installation position of the camera is determined based on the vehicle fatigue detection camera arrangement method described in the first aspect.

[0040] According to the embodiment of the present disclosure, the method for arranging vehicle fatigue detection cameras includes determining the position of the vehicle's A-pillar and A-pillar interior panel in the geometric data model through a geometric data model of the vehicle body and the cab; determining the camera installation area on the A-pillar that meets the parameter definition of the A-pillar obstacle angle and the forward field of view based on the predetermined requirements and the field of view area of the camera to be installed; adjusting the installation position of the camera in the camera installation area based on the size structure of the camera to be installed and the direct sunlight characteristics of the camera position to determine the camera arrangement range that meets the fatigue monitoring effect. This application determines the position of the vehicle's A-pillar and A-pillar interior panel in the geometric data model through the established geometric data model of the vehicle body and the cab; then determines the camera installation area on the A-pillar that meets the parameter definition of the A-pillar obstacle angle and the forward field of view based on the parameter definition of the A-pillar obstacle angle and the forward field of view and the field of view area of the camera to be installed; and then fine-tuning the position. In this way, the appropriate position for the camera to be installed on the A-pillar can be determined, thereby achieving the effect of detecting the fatigue state of the person through the camera without affecting the driver's field of view.

[0041] Additional aspects and advantages of the present disclosure will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 is a flow chart of a method for arranging vehicle fatigue detection cameras according to an exemplary embodiment;

[0043] Figure 2This is a diagram illustrating a regulatory compliance area for arranging fatigue detection cameras in a light commercial vehicle according to an exemplary embodiment;

[0044] Figure 3 is a diagram illustrating a compliance interval selection diagram for arranging fatigue detection cameras and fatigue monitoring cameras in a light commercial vehicle according to an exemplary embodiment;

[0045] Figure 4 1 is a schematic diagram showing an A-pillar obstacle angle measurement according to an exemplary embodiment;

[0046] Figure 5 The figure is a schematic structural diagram of a vehicle fatigue detection camera arrangement device according to an exemplary embodiment. DETAILED DESCRIPTION

[0047] The following describes in detail embodiments of the present disclosure, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present disclosure, and should not be construed as limiting the present disclosure.

[0048] Light commercial vehicles are commonly used for urban and intercity delivery, small-scale transport, and other applications. Drivers often face long hours behind the wheel or frequently engage in loading and unloading operations, which can easily lead to fatigue. Fatigue driving has become a serious factor affecting road traffic safety. Therefore, it is crucial to deploy fatigue detection cameras in appropriate locations to monitor driver fatigue.

[0049] In response to the above situation, the present disclosure provides a method for arranging vehicle fatigue detection cameras. Figure 1 FIG. 1 is a flow chart of a method for arranging vehicle fatigue detection cameras according to an exemplary embodiment. Figure 1 As shown, the vehicle fatigue detection camera arrangement method includes:

[0050] Step 10: Determine the position of the vehicle A-pillar in the geometric data model using the geometric data model of the vehicle body and the cab;

[0051] Step 11: Based on the predetermined parameters of the A-pillar obstruction angle and the forward field of view and the field of view of the camera to be installed, determining a camera installation area on the A-pillar that meets the parameters of the A-pillar obstruction angle and the forward field of view;

[0052] Step 12: Based on the size and structure of the camera to be installed and the direct sunlight characteristics of the camera position, adjust the installation position of the camera in the camera installation area to determine the camera arrangement range that meets the fatigue monitoring effect.

[0053] In this exemplary embodiment, a geometric data model can be constructed based on the seat arrangement of the vehicle body and the cab. The position of the vehicle's A-pillar is determined in the geometric data model. Based on the predetermined requirements of the A-pillar obstacle angle and the parameter definition of the forward field of view and the field of view area of the camera to be installed, the camera installation area on the A-pillar that meets the parameter definition of the A-pillar obstacle angle and the forward field of view is determined. Among them, the parameter definition of the A-pillar obstacle angle and the forward field of view can be determined according to the national standard requirements. For example, the A-pillar obstacle angle is not greater than 6 degrees, etc. The field of view area of the camera to be installed needs to meet the fatigue detection requirements for the driver. When the camera installation area on the A-pillar that meets the parameter definition of the A-pillar obstacle angle and the forward field of view is determined, the installation position of the camera in the camera installation area can be fine-tuned according to the direct sunlight characteristics of the camera position to determine the camera layout range that meets the fatigue monitoring effect. In this way, the appropriate position for the camera to be installed on the A-pillar can be determined, so that the camera can detect the fatigue state of the person without affecting the driver's field of view.

[0054] In some embodiments, determining a camera installation area on the A-pillar that meets the parameter definitions of the A-pillar obstruction angle and the forward field of view based on predetermined requirements and the field of view of the camera to be installed includes:

[0055] Determining that the A-pillar obstacle angle is less than a predetermined angle required for safe driving of the vehicle;

[0056] Determining the parameters of the forward field of view to be defined as the forward field of view range required for safe driving of the vehicle;

[0057] Determine whether the field of view of the camera to be installed covers the eye ellipses of people with various body characteristics when riding in a vehicle;

[0058] Based on the fact that the A-pillar obstruction angle is less than a predetermined angle required for safe vehicle driving, that the parameters of the forward field of view define a forward field of view range required for safe vehicle driving, and that the field of view area of the camera to be installed covers the human eye ellipse area of a person with various human characteristics when riding in the vehicle, as limiting conditions for the camera installation area, a camera installation area on the A-pillar that meets the parameters of the A-pillar obstruction angle and the forward field of view is determined.

[0059] In this exemplary embodiment, Figure 2 This is a diagram illustrating a regulatory compliance area for arranging fatigue detection cameras in a light commercial vehicle according to an exemplary embodiment; Figure 3 FIG. 1 is a diagram showing a light commercial vehicle interior fatigue detection camera arrangement and fatigue monitoring camera arrangement compliance interval selection diagram according to an exemplary embodiment. Figures 2-3As shown in the figure, the structure diagram includes: 1A-pillar and trim, regulatory layout area, A-pillar obstacle angle, fatigue detection camera illumination area and eye ellipse diagram; among them, points P1 and P2 are the center points of the driver's head rotation when observing the target within the horizontal line of the eye; point Pm is the focus of the longitudinal plumb plane through point R and the line connecting P1 and P2; among them, point R is the design point specified by the vehicle manufacturer for each seating position (not shown in the figure); point V is the longitudinal plumb plane through the center line of the front outer seating position in the crew cabin, related to point R and the designed seat back angle, this point is used to check whether the vehicle's field of view meets the requirements. For example, the position of point V relative to point R is determined by the X, Y, and Z coordinates of the three-dimensional coordinate system, as shown in Table 1. Table 1 is the corresponding table of the V point coordinate system. When the design backrest angle is 25 degrees, the basic coordinates of point V are:

[0060] Table 1

[0061] V-point X Y Z V1 68 -5 665 V2 68 -5 589

[0062] Table 2 shows the basic coordinates of point V when the backrest angle is not 25 degrees. Table 2 is a coordinate system correction table. The basic coordinates of point V can be obtained by revising the coordinates based on Table 1. For example, when the backrest angle is 5 degrees, the X, Y, and Z coordinates are revised based on the coordinates in Table 1: X is 68-186, Z is 665+28, and Y remains unchanged.

[0063] Table 2

[0064]

[0065]

[0066] In this exemplary embodiment, the field of view of the camera to be installed covers the human eye ellipse area of a person with various body characteristics when riding in a vehicle, including:

[0067] When the optical axis of the camera and the first connecting line are at the same position, the field of view of the camera to be installed covers the human eye ellipse area of people with various human features when riding in the vehicle;

[0068] Among them, the optical axis of the camera is a straight line through the center of the camera lens through the center of the camera field of view; the first connecting line is a line between the center of the camera lens and the hard point of the person's field of view; among them, the multiple human body features include fat, thin, tall, and short.

[0069] In this exemplary embodiment, the steps of adjusting the position or angle of the camera to be arranged include: the human field of view hard points, eye ellipse areas and head movement envelope range corresponding to 95%, 50% and 5% of the population, using the position relationship between the field of view hard points and the optical axis to determine the rotation angle of the fatigue monitoring camera, and combining the compliance areas in the above process to obtain a reasonable range for the arrangement of the fatigue detection camera.

[0070] In some embodiments, determining that the A-pillar obstacle angle is less than a predetermined angle required for safe driving of the vehicle includes:

[0071] Determining a predetermined R point and a vehicle seat back angle; wherein the R point is a reference point specified by the vehicle manufacturer for each seating position;

[0072] identifying a specific cross-section intersecting the A-pillar based on the predetermined R point and the vehicle seat back angle;

[0073] Based on the specific cross-section of the A-pillars, combined with the farthest point of the A-pillars and the installation state of the camera on the A-pillars, the obstacle angle of the A-pillar of the vehicle body where the camera is installed is determined.

[0074] In this exemplary embodiment, a specific cross-section intersecting the A-pillar is identified based on a predetermined R point and the vehicle seat back angle. Within the longitudinal vehicle model, the A-pillar obstruction angle is determined based on the A-pillar's furthest point and fixed at 6 degrees. This defines the maximum conforming A-pillar installation area that complies with the regulatory values set forth in GB 11562-2014. This defined maximum conforming A-pillar installation area serves as the standard camera placement area, ensuring the vehicle complies with relevant field of view safety standards.

[0075] In some embodiments, adjusting the installation position of the camera in the camera installation area based on the size structure of the camera to be installed and the direct sunlight characteristics of the camera position to determine the camera arrangement range that meets the fatigue monitoring effect includes:

[0076] In combination with the size structure of the camera to be installed, and based on the standard that sunlight cannot directly hit the camera lens, the installation position of the camera in the camera installation area is adjusted to determine the camera layout range that meets the fatigue monitoring effect.

[0077] In this exemplary embodiment, the camera is positioned in an optimized central location to capture critical areas of the driver's face, including but not limited to the eyes and mouth, capturing image information and effectively monitoring driver fatigue. The mounting point protects the camera lens from direct sunlight, reducing overexposure or reflections from external light sources and improving image capture quality. Furthermore, the mounting point is designed to not obstruct the driver's forward line of sight, ensuring that the camera can effectively perform its fatigue monitoring function without compromising the driver's field of view.

[0078] In some embodiments, the identifying a specific cross-section intersecting the A-pillar based on the predetermined R point and the vehicle seat back angle includes:

[0079] Determining the center of the human eye based on the predetermined R point and the vehicle seat back angle;

[0080] Based on the center point of the human eye and the offset angle determined by affecting the human eye's field of view, a specific cross-section intersecting the A-pillar is identified; wherein the offset angle determined by affecting the human eye's field of view includes a first offset angle that is offset upward with the center point of the human eye as the base point and a second offset angle that is offset downward with the center point of the human eye as the base point.

[0081] In this exemplary embodiment, Figure 5 FIG. 1 is a schematic diagram of measuring an obstacle angle of an A-pillar according to an exemplary embodiment. Figure 5 As shown, a 2-degree upward offset from point Pm is the first offset angle, and a 5-degree downward offset from point Pm is the second offset angle. A straight line drawn through point Pm at the first upward offset angle intersects with the outer side of the A-pillar, resulting in the first intersection point. A horizontal section of the A-pillar through the first intersection point is the first specific section S1. A straight line drawn through point Pm at the second downward offset angle intersects with the outer side of the A-pillar, resulting in the second intersection point. A horizontal section of the A-pillar through the second intersection point is the second specific section S2.

[0082] In this exemplary embodiment, the step of identifying a specific cross section intersecting the A-pillar based on the center point of the human eye and the offset angle determined to affect the human eye's field of view includes:

[0083] Identifying a first specific section S1 intersecting the A-pillar based on the center point of the human eye and a first offset angle determined to affect the field of view of the human eye;

[0084] Identifying a second specific section S2 intersecting the A-pillar based on the center point of the human eye and a second offset angle determined to affect the field of view of the human eye;

[0085] The determining of the obstacle angle of the A-pillar of the vehicle body where the camera is installed based on the specific cross-section of the A-pillar, in combination with the farthest point of the A-pillar and the installation state of the camera on the A-pillar, includes:

[0086] Determine a first cross-section projection within an obstacle angle demarcation plane based on the first specific cross-section S1 and the installation state of the camera on the A-pillar;

[0087] Determine a second cross-section projection within the obstacle angle demarcation plane based on the second specific cross-section S2 and the installation state of the camera on the A-pillar;

[0088] Based on the first cross-sectional projection and the second cross-sectional projection, the vehicle body A-pillar obstacle angle formed in the obstacle angle demarcation plane is determined; wherein, the obstacle angle demarcation plane is determined based on the center point of the human eye and a predetermined azimuth point.

[0089] In this exemplary embodiment, the predetermined orientation points are two symmetrical points, and the center point of the human eye and the predetermined orientation points form an isosceles triangle. For example, the predetermined orientation points E1 and E2; E1 and E2 are both 102 mm away from Pm; E1 is 65 mm away from E2. The predetermined orientation points E1, E2, and Pm are all on the same horizontal plane. Among them, the obstacle angle demarcation plane is parallel to the first specific section and the second specific section. Based on the first specific section S1 and the installation status of the camera on the A-pillar, a projection is made into the obstacle angle demarcation plane to obtain a first section projection; based on the second specific section S2 and the installation status of the camera on the A-pillar, a projection is made into the obstacle angle demarcation plane to obtain a second section projection.

[0090] The present disclosure provides a vehicle fatigue detection camera arrangement device. Figure 5 FIG. 1 is a schematic diagram of a vehicle fatigue detection camera arrangement device according to an exemplary embodiment. Figure 5 As shown, the vehicle fatigue detection camera arrangement device includes:

[0091] A first determining module 60 is configured to determine the position of the vehicle A-pillar in the geometric data model of the vehicle body and the cab;

[0092] A second determining module 61 is configured to determine a camera installation area on the A-pillar that meets the parameters of the A-pillar obstruction angle and the forward field of view, based on the predetermined parameters of the A-pillar obstruction angle and the forward field of view and the field of view of the camera to be installed;

[0093] The third determination module 62 is used to adjust the installation position of the camera in the camera installation area based on the size structure of the camera to be installed and the direct sunlight characteristics of the camera position, so as to determine the camera arrangement range that meets the fatigue monitoring effect.

[0094] In this exemplary embodiment, a geometric data model can be constructed based on the seat arrangement of the vehicle body and the cab. The position of the vehicle's A-pillar is determined in the geometric data model. Based on the predetermined requirements of the A-pillar obstacle angle and the parameter definition of the forward field of view and the field of view area of the camera to be installed, the camera installation area on the A-pillar that meets the parameter definition of the A-pillar obstacle angle and the forward field of view is determined. Among them, the parameter definition of the A-pillar obstacle angle and the forward field of view can be determined according to the national standard requirements. For example, the A-pillar obstacle angle is not greater than 6 degrees, etc. The field of view area of the camera to be installed needs to meet the fatigue detection requirements for the driver. When the camera installation area on the A-pillar that meets the parameter definition of the A-pillar obstacle angle and the forward field of view is determined, the installation position of the camera in the camera installation area can be fine-tuned according to the direct sunlight characteristics of the camera position to determine the camera layout range that meets the fatigue monitoring effect. In this way, the appropriate position for the camera to be installed on the A-pillar can be determined, so that the camera can detect the fatigue state of the person without affecting the driver's field of view.

[0095] In some embodiments, the second determining module 61 is used to

[0096] Determining that the A-pillar obstacle angle is less than a predetermined angle required for safe driving of the vehicle;

[0097] Determining the parameters of the forward field of view to be defined as the forward field of view range required for safe driving of the vehicle;

[0098] Determine whether the field of view of the camera to be installed covers the eye ellipses of people with various body characteristics when riding in a vehicle;

[0099] Based on the fact that the A-pillar obstruction angle is less than a predetermined angle required for safe vehicle driving, that the parameters of the forward field of view define a forward field of view range required for safe vehicle driving, and that the field of view area of the camera to be installed covers the human eye ellipse area of a person with various human characteristics when riding in the vehicle, as limiting conditions for the camera installation area, a camera installation area on the A-pillar that meets the parameters of the A-pillar obstruction angle and the forward field of view is determined.

[0100] In this exemplary embodiment, Figure 2 This is a diagram illustrating a regulatory compliance area for arranging fatigue detection cameras in a light commercial vehicle according to an exemplary embodiment; Figure 3 is a diagram illustrating a compliance interval selection diagram for arranging fatigue detection cameras and fatigue monitoring cameras in a light commercial vehicle according to an exemplary embodiment;

[0101] Figure 4 The figure shows the arrangement of fatigue detection cameras in a light commercial vehicle, the optical axis of the fatigue detection cameras, the viewing angle of the cameras, and the coverage range verification diagram according to an exemplary embodiment. Figures 2-3 As shown in the figure, the structure is schematically shown, including: 1A-pillar and trim, regulatory layout area, A-pillar obstacle angle, fatigue detection camera illumination area and eye ellipse diagram; wherein points P1 and P2 are the center points of head rotation when observing a target within the horizontal line of the driver's eyes; point Pm is the focus of the longitudinal plumb plane passing through point R and the line connecting P1 and P2; wherein point R is the design point specified by the vehicle manufacturer for each seating position (not shown in the figure); point V is a position related to the designed seat back angle determined by the intersection of the longitudinal plumb plane passing through the center line of the front outer seating position and point R when checking whether the vehicle's field of view meets the requirements. In this exemplary embodiment, the field of view of the camera to be installed covers the human eye ellipse area of people with various human characteristics when sitting in the vehicle, including:

[0102] When the optical axis of the camera and the first connecting line are at the same position, the field of view of the camera to be installed covers the human eye ellipse area of people with various human features when riding in the vehicle;

[0103] Among them, the optical axis of the camera is a straight line through the center of the camera lens through the center of the camera field of view; the first connecting line is a line between the center of the camera lens and the hard point of the person's field of view; among them, the multiple human body features include fat, thin, tall, and short.

[0104] In this exemplary embodiment, the steps of adjusting the position or angle of the camera to be arranged include: the human field of view hard points, eye ellipse areas and head movement envelope range corresponding to 95%, 50% and 5% of the population, using the position relationship between the field of view hard points and the optical axis to determine the rotation angle of the fatigue monitoring camera, and combining the compliance areas in the above process to obtain a reasonable range for the arrangement of the fatigue detection camera.

[0105] In some embodiments, the second determining module 61 is used to

[0106] Determining a predetermined R point and a vehicle seat back angle; wherein the R point is a reference point specified by the vehicle manufacturer for each seating position;

[0107] identifying a specific cross-section intersecting the A-pillar based on the predetermined R point and the vehicle seat back angle;

[0108] Based on the specific cross-section of the A-pillars, combined with the farthest point of the A-pillars and the installation state of the camera on the A-pillars, the obstacle angle of the A-pillar of the vehicle body where the camera is installed is determined.

[0109] In this exemplary embodiment, a specific cross-section intersecting the A-pillar is identified based on a predetermined R point and the vehicle seat back angle. Within the longitudinal vehicle model, the A-pillar obstruction angle is determined based on the A-pillar's furthest point and fixed at 6 degrees. This defines the maximum conforming A-pillar installation area that complies with the regulatory values set forth in GB 11562-2014. This defined maximum conforming A-pillar installation area serves as the standard camera placement area, ensuring the vehicle complies with relevant field of view safety standards.

[0110] In some embodiments, the third determining module 62 is used to

[0111] In combination with the size structure of the camera to be installed, and based on the standard that sunlight cannot directly hit the camera lens, the installation position of the camera in the camera installation area is adjusted to determine the camera layout range that meets the fatigue monitoring effect.

[0112] In this exemplary embodiment, the camera is positioned in an optimized central location to capture critical areas of the driver's face, including but not limited to the eyes and mouth, capturing image information and effectively monitoring driver fatigue. The mounting point protects the camera lens from direct sunlight, reducing overexposure or reflections from external light sources and improving image capture quality. Furthermore, the mounting point is designed to not obstruct the driver's forward line of sight, ensuring that the camera can effectively perform its fatigue monitoring function without compromising the driver's field of view.

[0113] In some embodiments, the second determining module 61 is used to

[0114] Determining the center of the human eye based on the predetermined R point and the vehicle seat back angle;

[0115] Based on the center point of the human eye and the offset angle determined by affecting the human eye's field of view, a specific cross-section intersecting the A-pillar is identified; wherein the offset angle determined by affecting the human eye's field of view includes a first offset angle that is offset upward with the center point of the human eye as the base point and a second offset angle that is offset downward with the center point of the human eye as the base point.

[0116] In this exemplary embodiment, Figure 4 FIG. 1 is a schematic diagram of measuring an obstacle angle of an A-pillar according to an exemplary embodiment. Figure 4As shown, a 2-degree upward offset from point Pm is the first offset angle, and a 5-degree downward offset from point Pm is the second offset angle. A straight line drawn through point Pm at the first upward offset angle intersects with the outer side of the A-pillar, resulting in the first intersection point. A horizontal section of the A-pillar through the first intersection point is the first specific section S1. A straight line drawn through point Pm at the second downward offset angle intersects with the outer side of the A-pillar, resulting in the second intersection point. A horizontal section of the A-pillar through the second intersection point is the second specific section S2.

[0117] In this exemplary embodiment, the step of identifying a specific cross section intersecting the A-pillar based on the center point of the human eye and the offset angle determined to affect the human eye's field of view includes:

[0118] Identifying a first specific section S1 intersecting the A-pillar based on the center point of the human eye and a first offset angle determined to affect the field of view of the human eye;

[0119] Identifying a second specific section S2 intersecting the A-pillar based on the center point of the human eye and a second offset angle determined to affect the field of view of the human eye;

[0120] The determining of the obstacle angle of the A-pillar of the vehicle body where the camera is installed based on the specific cross-section of the A-pillar, in combination with the farthest point of the A-pillar and the installation state of the camera on the A-pillar, includes:

[0121] Determine a first cross-section projection within an obstacle angle demarcation plane based on the first specific cross-section S1 and the installation state of the camera on the A-pillar;

[0122] Determine a second cross-section projection within the obstacle angle demarcation plane based on the second specific cross-section S2 and the installation state of the camera on the A-pillar;

[0123] Based on the first cross-sectional projection and the second cross-sectional projection, the vehicle body A-pillar obstacle angle formed in the obstacle angle demarcation plane is determined; wherein, the obstacle angle demarcation plane is determined based on the center point of the human eye and a predetermined azimuth point.

[0124] In this exemplary embodiment, the predetermined orientation points are two symmetrical points, and the center point of the human eye and the predetermined orientation points form an isosceles triangle. For example, the predetermined orientation points E1 and E2; E1 and E2 are both 102 mm away from Pm; E1 is 65 mm away from E2. The predetermined orientation points E1, E2, and Pm are all on the same horizontal plane. Among them, the obstacle angle demarcation plane is parallel to the first specific section and the second specific section. Based on the first specific section S1 and the installation status of the camera on the A-pillar, a projection is made into the obstacle angle demarcation plane to obtain a first section projection; based on the second specific section S2 and the installation status of the camera on the A-pillar, a projection is made into the obstacle angle demarcation plane to obtain a second section projection.

[0125] The present disclosure provides a computer-readable storage medium on which a vehicle fatigue detection camera arrangement program is stored. When the vehicle fatigue detection camera arrangement program is executed by a processor, the vehicle fatigue detection camera arrangement method described in the above embodiments is implemented.

[0126] The present disclosure provides a vehicle equipped with a camera; the installation position of the camera is determined based on the vehicle fatigue detection camera arrangement method described in the above embodiments.

[0127] It should be noted that the logic and / or steps represented in the flowcharts or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing the logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, apparatus, or device (such as a computer-based system, a system including a processor, or other system that can fetch and execute instructions from an instruction execution system, apparatus, or device), or in conjunction with such instruction execution system, apparatus, or device. For the purposes of this specification, a "computer-readable medium" can be any device that can contain, store, communicate, propagate, or transmit a program for use by an instruction execution system, apparatus, or device, or in conjunction with such instruction execution system, apparatus, or device. More specific examples (non-exhaustive list) of computer-readable media include the following: an electrical connection portion having one or more wires (electronic device), a portable computer disk cartridge (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and programmable read-only memory (EPROM or flash memory), fiber optic devices, and portable compact disc read-only memory (CDROM). Furthermore, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium and then editing, interpreting or otherwise processing it in a suitable manner if necessary, and then storing it in a computer memory.

[0128] It should be understood that various parts of the present disclosure can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented using software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented using hardware, as in another embodiment, any one of the following technologies known in the art or a combination thereof can be used to implement: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application-specific integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0129] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0130] In the description of the present disclosure, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present disclosure.

[0131] In addition, the terms "first" and "second" used in the embodiments of the present disclosure are only used for descriptive purposes and should not be understood as indicating or implying relative importance, or implicitly indicating the number of technical features indicated in the embodiments. Therefore, the features defined in the embodiments of the present disclosure with terms such as "first" and "second" can explicitly or implicitly indicate that the embodiment includes at least one such feature. In the description of the present disclosure, the word "plurality" means at least two or two or more, such as two, three, four, etc., unless otherwise clearly and specifically defined in the embodiments.

[0132] In this disclosure, unless otherwise clearly specified or limited in the embodiments, the terms "installed," "connected," "connect," and "fixed" appearing in the embodiments should be understood in a broad sense. For example, the connection can be a fixed connection, a detachable connection, or an integral connection. It can also be a mechanical connection, an electrical connection, etc.; of course, it can also be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication between two elements, or the interaction between two elements. For those skilled in the art, the specific meanings of the above terms in this disclosure can be understood based on the specific implementation.

[0133] In the present disclosure, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0134] Although the embodiments of the present disclosure have been shown and described above, it is understood that the above embodiments are illustrative and are not to be construed as limitations on the present disclosure. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present disclosure.

Claims

1. A method for arranging vehicle fatigue detection cameras, characterized in that: include: Determining the position of the vehicle's A-pillar in the geometric data model using the vehicle body and cab geometry model; Determining a camera installation area on the A-pillar that meets the parameters of the A-pillar obstruction angle and the forward field of view based on predetermined requirements and the field of view of the camera to be installed; Based on the size structure of the camera to be installed and the direct sunlight characteristics of the camera position, the installation position of the camera in the camera installation area is adjusted to determine the camera layout range that meets the fatigue monitoring effect.

2. The vehicle fatigue detection camera arrangement method according to claim 1, characterized in that: The determining of a camera installation area on the A-pillar that meets the parameter definition of the A-pillar obstruction angle and the forward field of view based on the predetermined requirements and the field of view area of the camera to be installed includes: Determining that the A-pillar obstacle angle is less than a predetermined angle required for safe driving of the vehicle; Determining the parameters of the forward field of view to be defined as the forward field of view range required for safe driving of the vehicle; Determine whether the field of view of the camera to be installed covers the eye ellipses of people with various body characteristics when riding in a vehicle; Based on the fact that the A-pillar obstruction angle is less than a predetermined angle required for safe vehicle driving, that the parameters of the forward field of view define a forward field of view range required for safe vehicle driving, and that the field of view area of the camera to be installed covers the human eye ellipse area of a person with various human characteristics when riding in the vehicle, as limiting conditions for the camera installation area, a camera installation area on the A-pillar that meets the parameters of the A-pillar obstruction angle and the forward field of view is determined.

3. The vehicle fatigue detection camera arrangement method according to claim 2, characterized in that: The field of view of the camera to be installed covers the human eye ellipse area of a person with various human features when riding in a vehicle, including: When the optical axis of the camera and the first connecting line are at the same position, the field of view of the camera to be installed covers the human eye ellipse area of people with various human features when riding in the vehicle; Among them, the optical axis of the camera is a straight line through the center of the camera lens through the center of the camera field of view; the first connecting line is a line between the center of the camera lens and the hard point of the person's field of view; among them, the multiple human body features include fat, thin, tall, and short.

4. The vehicle fatigue detection camera arrangement method according to claim 2, characterized in that: Determining that the A-pillar obstacle angle is less than a predetermined angle required for safe driving of the vehicle includes: Determining a predetermined R point and a vehicle seat back angle; wherein the R point is a reference point specified by the vehicle manufacturer for each seating position; identifying a specific cross-section intersecting the A-pillar based on the predetermined R point and the vehicle seat back angle; Based on the specific cross-section of the A-pillars, combined with the farthest point of the A-pillars and the installation state of the camera on the A-pillars, the obstacle angle of the A-pillar of the vehicle body where the camera is installed is determined.

5. The vehicle fatigue detection camera arrangement method according to claim 1, characterized in that: The adjusting the installation position of the camera in the camera installation area based on the size structure of the camera to be installed and the direct sunlight characteristics of the camera position to determine the camera arrangement range that meets the fatigue monitoring effect includes: In combination with the size structure of the camera to be installed, and based on the standard that sunlight cannot directly hit the camera lens, the installation position of the camera in the camera installation area is adjusted to determine the camera layout range that meets the fatigue monitoring effect.

6. The vehicle fatigue detection camera arrangement method according to claim 4, characterized in that: The identifying a specific cross section intersecting the A-pillar based on the predetermined R point and the vehicle seat back angle includes: Determining the center of the human eye based on the predetermined R point and the vehicle seat back angle; Based on the center point of the human eye and the offset angle determined by affecting the human eye's field of view, a specific cross-section intersecting the A-pillar is identified; wherein the offset angle determined by affecting the human eye's field of view includes a first offset angle that is offset upward with the center point of the human eye as the base point and a second offset angle that is offset downward with the center point of the human eye as the base point.

7. The vehicle fatigue detection camera arrangement method according to claim 6, characterized in that: The identifying a specific cross section intersecting the A-pillar based on the center point of the human eye and the offset angle determined to affect the human eye's field of view includes: identifying a first specific cross-section intersecting the A-pillar based on the center point of the human eye and a first offset angle determined to affect the field of view of the human eye; identifying a second specific cross-section intersecting the A-pillar based on the center point of the human eye and a second offset angle determined to affect the field of view of the human eye; The determining of the obstacle angle of the A-pillar of the vehicle body where the camera is installed based on the specific cross-section of the A-pillar, in combination with the farthest point of the A-pillar and the installation state of the camera on the A-pillar, includes: Determining a first cross-section projection within an obstacle angle demarcation plane based on the first specific cross-section and the installation state of the camera on the A-pillar; Determining a second cross-section projection within the obstacle angle demarcation plane based on the second specific cross-section and the installation state of the camera on the A-pillar; Based on the first cross-sectional projection and the second cross-sectional projection, the vehicle body A-pillar obstacle angle formed in the obstacle angle demarcation plane is determined; wherein, the obstacle angle demarcation plane is determined based on the center point of the human eye and a predetermined azimuth point.

8. A vehicle fatigue detection camera arrangement device, characterized in that: include: A first determining module is used to determine the position of the vehicle A-pillar in the geometric data model based on the geometric data model of the vehicle body and the cab; a second determining module for determining, based on predetermined parameter definitions of the A-pillar obstruction angle and the forward field of view and the field of view of the camera to be installed, a camera installation area on the A-pillar that meets the parameter definitions of the A-pillar obstruction angle and the forward field of view; The third determination module is used to adjust the installation position of the camera in the camera installation area based on the size structure of the camera to be installed and the direct sunlight characteristics of the camera position to determine the camera arrangement range that meets the fatigue monitoring effect.

9. A computer-readable storage medium, characterized in that A vehicle fatigue detection camera arrangement program is stored thereon, and when the vehicle fatigue detection camera arrangement program is executed by a processor, the vehicle fatigue detection camera arrangement method according to any one of claims 1 to 7 is implemented.

10. A vehicle, characterized in that: A camera is installed; the installation position of the camera is determined based on the vehicle fatigue detection camera arrangement method described in any one of claims 1-7.

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