Positioning assembly, camera device and four-wheel positioning system

Abstract

The utility model is suitable for the technical field of detection equipment, and provides a positioning assembly, a camera device and a four-wheel positioning system. The positioning assembly is used for the camera device, and the camera device comprises two cameras arranged at an interval. The positioning assembly comprises a positioning target and a target recognition piece, the positioning target is used for being installed on one camera, and the target recognition piece is used for being installed on the other camera and can recognize the positioning target; the positioning target comprises a positioning body and at least two positioning bodies, the positioning body is provided with a positioning base surface, the positioning bodies are installed on the positioning base surface, the surfaces, away from the positioning base surface, of the positioning bodies are positioning surfaces, the positioning base surface and the positioning surfaces are not coplanar, and the positioning surfaces are not coplanar. By means of the design, the two cameras in the camera device can accurately recognize the relative positions of each other, calculation of depth information can be optimized, the accuracy of three-dimensional reconstruction is improved, meanwhile, rapid registration of images is facilitated, the efficiency and quality of image processing are improved, and time and cost are reduced.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of detection equipment, and more particularly relates to a positioning assembly, a camera device and a four-wheel alignment system. BACKGROUND

[0002] Four-wheel alignment refers to a process of measuring and adjusting the geometric parameters of four tires of a vehicle to ensure that the contact angle and direction between the tires of the vehicle and the ground meet the use standard.

[0003] In the related art, when performing four-wheel alignment, a target is first installed on each tire, and then only two cameras are used to capture the targets on the four tires, and then feature points on the targets are detected and extracted through an image processing algorithm, and finally relevant components of a suspension system are adjusted according to the measurement results to complete the four-wheel alignment. However, the measurement accuracy of the above operation mode is low. UTILITARIAN CONTENT

[0004] The purpose of the embodiments of the present application is to provide a positioning assembly, a camera device and a four-wheel alignment system, aiming to solve the technical problem of low measurement accuracy of the camera device in the related art.

[0005] To achieve the above-mentioned purpose, according to one aspect of the present application, a positioning assembly for a camera device is provided, the camera device comprising two cameras arranged at intervals; the positioning assembly comprising a positioning target and a target recognition member, the positioning target being used to be installed on one of the two cameras, and the target recognition member being used to be installed on the other of the two cameras and capable of recognizing the positioning target; the positioning target comprising a positioning body and at least two positioning bodies, the positioning body having a positioning base surface, the positioning bodies being installed on the positioning base surface, the surface of the positioning body away from the positioning base surface being a positioning surface, the positioning base surface and the positioning surface being non-coplanar, and each positioning surface being non-coplanar with each other.

[0006] Optionally, the positioning base surface is parallel to at least one of the plurality of positioning surfaces; and / or, at least two of the plurality of positioning surfaces are parallel.

[0007] Optionally, each positioning surface is parallel to each other, and the positioning base surface is parallel to the positioning surface.

[0008] Optionally, the number of the positioning bodies is three, the three positioning bodies are a first positioning body, a second positioning body and a third positioning body, and the first positioning body, the second positioning body and the third positioning body are arranged in sequence; the spacing between the positioning surface on the first positioning body, the second positioning body and the third positioning body and the positioning base surface gradually increases or gradually decreases.

[0009] Optionally, the positioning base surface and each positioning surface are both installed with a feature recognition component for the target recognition member to recognize.

[0010] Optionally, the number of positioning targets is two, and the two positioning targets are respectively installed on two cameras and oppositely arranged; the number of target recognition members is two, and the two target recognition members are respectively arranged in one-to-one correspondence with the two positioning targets; and the two target recognition members are respectively installed on the two cameras and can respectively recognize the corresponding positioning targets.

[0011] According to another aspect of the present application, a camera device is provided, which comprises two spaced cameras and the above-mentioned positioning assembly; one of the two cameras is a first camera, and the other is a second camera; the positioning target is installed on a surface of the first camera close to the second camera, and the target recognition member is installed on a surface of the second camera close to the first camera.

[0012] Optionally, the camera device is located at the front side or the rear side of a vehicle and is used to capture images of targets on wheels of the vehicle; the vehicle comprises four wheels, two of which are located at one side and the other two are located at the other side; the first camera has a first capturing component installed on a first surface of the first camera and used to capture images of targets on the two wheels located at the one side; the positioning target is installed on a second surface of the first camera, which is arranged adjacent to the first surface of the first camera; the second camera has a second capturing component installed on a third surface of the second camera and used to capture images of targets on the two wheels located at the other side; and the target recognition member is installed on a fourth surface of the second camera, which is arranged adjacent to the third surface of the second camera.

[0013] Optionally, the positioning target is detachably installed on the first camera; and / or, the surface of the first camera close to the second camera is provided with a first mounting groove, part of the structure of the positioning target is installed in the first mounting groove, a support structure is installed on the groove bottom of the first mounting groove, the support structure is protrudingly arranged towards the groove opening of the first mounting groove, and the positioning target is installed on the support structure through a fastener. The target recognition member is detachably installed on the second camera; and / or, the surface of the second camera close to the first camera is provided with a second mounting groove, and the target recognition member is detachably installed in the second mounting groove through a fastener.

[0014] According to still another aspect of the present application, a four-wheel alignment system is provided, which comprises a stand, a base, a crossbeam, a control component and the above-mentioned camera device; the stand is fixedly connected with the base, the crossbeam is supported by the stand and can be raised or lowered relative to the stand, the camera device is installed on the crossbeam and electrically connected with the control component.

[0015] The positioning assembly provided by the application has the beneficial effects that: before the camera device is ready to capture images for four-wheel positioning, the positioning target is first installed on one of the two cameras, and the target recognition member is installed on the other one of the two cameras; then the target recognition member recognizes the positioning target, so that the two cameras recognize the relative positions of each other; and then the two cameras in the camera device capture images for four-wheel positioning. The positioning assembly can make the two cameras in the camera device accurately recognize the relative positions of each other, which not only helps to optimize the calculation of depth information, thereby improving the accuracy of three-dimensional reconstruction, but also helps to quickly register images, thereby improving the efficiency and quality of image processing and reducing time and cost. In addition, the positioning assembly can also position and correct the camera just after assembly or position change, so as to identify and correct mechanical errors and installation errors, and ensure that the detection accuracy of the camera device always remains at a high level. In addition, the positioning base surface and the positioning surfaces are not coplanar, and the positioning surfaces are not coplanar with each other, which makes the shape of the positioning target a three-dimensional shape. The three-dimensional design gives the positioning target a unique profile and features, so that the positioning target can provide more depth information, so that the target recognition member can more easily recognize the positioning target and judge the position of the positioning target. The positioning base surface and the plurality of positioning surfaces also weaken the influence caused by shielding, so as to ensure that the positioning recognition member can always recognize the positioning target. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0017] Figure 1 The front view schematic diagram of the four-wheel positioning system provided by the embodiments of the present application;

[0018] Figure 2 The structural schematic diagram of the camera device installed on the cross beam in the first perspective view provided by the embodiments of the present application;

[0019] Figure 3 The enlarged schematic diagram of A in FIG. 4; Figure 2

[0020] Figure 4 The structural schematic diagram of the positioning target provided by the embodiments of the present application;

[0021] Figure 5 The structural schematic diagram of the camera device installed on the cross beam in the second perspective view provided by the embodiments of the present application;

[0022] ​Figure 6 A structure schematic diagram of the assembled first positioning body, second positioning body, third positioning body and adjusting rod provided by the embodiment of the present application is shown in the following figure:

[0023] Figure 7 A cross-sectional schematic diagram of the positioning body provided by the embodiment of the present application with a mounting hole and a limiting hole is shown in the following figure:

[0024] Figure 8 A structure schematic diagram of the positioning body provided by the embodiment of the present application is shown in the following figure: Figure 6 An enlarged schematic diagram of the middle B in the above figure is shown in the following figure:

[0025] Figure 9 A structure schematic diagram of the camera device provided by the embodiment of the present application for four-wheel alignment of the wheels of a vehicle is shown in the following figure:

[0026] Figure 10 A structure schematic diagram of the camera device provided by the embodiment of the present application hidden behind the positioning target installed on the crossbeam in a third perspective view is shown in the following figure:

[0027] Figure 11 A structure schematic diagram of the camera device provided by the embodiment of the present application hidden behind the target recognition member installed on the crossbeam in a fourth perspective view is shown in the following figure: Figure 10 An enlarged schematic diagram of the middle C in the above figure is shown in the following figure:

[0028] Figure 12 A structure schematic diagram of the camera device provided by the embodiment of the present application hidden behind the target recognition member installed on the crossbeam in a fourth perspective view is shown in the following figure:

[0029] Figure 13 An enlarged schematic diagram of the middle D in the above figure is shown in the following figure: Figure 12

[0030] The label details involved in the above figures are as follows:

[0031] 100, positioning target; 110, positioning body; 111, positioning base surface; 112, mounting hole; 113, limiting hole; 120, first positioning body; 130, second positioning body; 140, third positioning body; 150, positioning surface; 160, feature recognition component; 161, feature recognition body; 162, feature recognition body; 170, adjusting rod; 171, adjusting hole;

[0032] 200, target recognition member;

[0033] 300, first camera; 310, first capturing component; 320, first mounting groove; 330, support structure;

[0034] 400, second camera; 410, second capturing component; 420, second mounting groove;

[0035] 500, stand; 600, base; 700, crossbeam; 800, target; 900, wheel. DETAILED DESCRIPTION ​

[0036] In order to make the technical problems to be solved, technical solutions and beneficial effects of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application and not to limit the present application.

[0037] It should be noted that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or indirectly connected to the other element. The embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and embodiments.

[0038] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0039] In addition, the terms "first", "second", are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0040] As described in the background, Four-Wheel Alignment refers to a process of measuring and adjusting the geometric parameters of the four tires of a vehicle to ensure that the contact angle and direction between the tires of the vehicle and the ground meet the use standard. In the related art, when performing Four-Wheel Alignment, a target is first installed on each tire, then only two cameras are used to capture the targets on the four tires respectively, then the feature points on the targets are detected and extracted through an image processing algorithm, and finally the relevant parts of the suspension system are adjusted according to the measurement results to complete the Four-Wheel Alignment. However, the measurement accuracy of the above operation mode is low.

[0041] Reference Figures 1 to 5In order to solve the above problems, according to an aspect of the present application, embodiments of the present application provide a positioning assembly, which is used in a camera device, the camera device comprising two cameras arranged at intervals; the positioning assembly comprises a positioning target 100 and a target recognition member 200, the positioning target 100 is used to be installed on one of the two cameras, and the target recognition member 200 is used to be installed on the other one of the two cameras and can recognize the positioning target 100, so that the target recognition member 200 can obtain a target image by recognizing the positioning target 100, and the relative position relationship between the two cameras arranged at intervals can be obtained by processing the target image through an algorithm, thereby effectively avoiding the camera device from affecting the accuracy of image recognition due to the cameras with assembly or position changes.

[0042] The positioning target 100 comprises a positioning body 110 and at least two positioning bodies, the positioning body 110 has a positioning base surface 111, the positioning bodies are installed on the positioning base surface 111, the surface of the positioning bodies away from the positioning base surface 111 is a positioning surface 150, the positioning base surface 111 is not coplanar with the positioning surface 150, and each positioning surface 150 is not coplanar with each other.

[0043] In the present embodiment, one of the two cameras is a first camera 300, and the other one is a second camera 400. The target recognition member 200 can be an industrial camera or a laser radar, and the target recognition member 200 is installed on the second camera 400. The positioning target 100 has a three-dimensional shape, and the positioning target 100 is installed on the first camera 300; the positioning body 110 is a positioning mounting plate, which plays a role of mounting and carrying multiple positioning bodies. In other embodiments, the target recognition member 200 can also be installed on the first camera 300, and the positioning target 100 is installed on the second camera 400.

[0044] Before the camera device is ready to capture images for four-wheel positioning, first, the positioning target 100 is installed on one of the two cameras, and the target recognition piece 200 is installed on the other of the two cameras; then the target recognition piece 200 recognizes the positioning target 100, so that the two cameras recognize the relative positions of each other; then the two cameras in the camera device capture images for four-wheel positioning. The positioning assembly provided can make the two cameras in the camera device accurately recognize the relative positions of each other, which not only helps to optimize the calculation of depth information, thereby improving the accuracy of three-dimensional reconstruction, but also helps to quickly register images, thereby improving the efficiency and quality of image processing, and reducing time and cost. In addition, the positioning assembly provided can also position and correct the camera just after assembly or position change, so as to identify and correct mechanical errors and installation errors, and ensure that the detection accuracy of the camera device always remains at a high level. In addition, the positioning base surface 111 is not coplanar with the positioning surface 150, and each positioning surface 150 is not coplanar with each other, which makes the shape of the positioning target 100 a three-dimensional shape. This three-dimensional design gives the positioning target 100 a unique profile and features, so that the positioning target 100 can provide more depth information, so that the target recognition piece 200 can more easily recognize the positioning target 100 and determine the position of the positioning target 100; the positioning base surface 111 and the plurality of positioning surfaces 150 provided also weaken the influence caused by occlusion, so as to ensure that the positioning recognition piece can always recognize the positioning target 100.

[0045] With reference to Figure 3 and Figure 4 In an embodiment, the positioning base surface 111 is parallel to at least one of the plurality of positioning surfaces 150.

[0046] In the embodiment, the positioning base surface 111 can be parallel to one of the plurality of positioning surfaces 150. The above design not only makes the target recognition piece 200 more easily recognize the positioning target 100, thereby improving the accuracy of recognition, but also weakens the influence of light changes on the recognition operation, so as to ensure that the target recognition piece 200 can still maintain good recognition performance under different light conditions; in addition, the above design also improves the stability and adaptability of the positioning target 100, and reduces the manufacturing difficulty and cost. In other embodiments, the positioning base surface 111 can also be parallel to two of the plurality of positioning surfaces 150, three of the plurality of positioning surfaces 150, or all of the plurality of positioning surfaces 150.

[0047] With reference to Figure 3 and Figure 4 In an embodiment, at least two of the plurality of positioning surfaces 150 are parallel.

[0048] In the embodiment, two of the plurality of locating surfaces 150 can be kept parallel. The above design not only makes the target recognition member 200 more easily recognize the locating target 100, thereby improving the accuracy of recognition, but also reduces the influence of light changes on the recognition operation, ensuring that the target recognition member 200 can still maintain good recognition performance under different light conditions; in addition, the above design also improves the stability and adaptability of the locating target 100, and reduces the manufacturing difficulty and cost. In other embodiments, three of the plurality of locating surfaces 150 can also be kept parallel, or all of the locating surfaces 150 can be kept parallel.

[0049] Referring to Figure 3 and Figure 4 In an embodiment, each locating surface 150 is parallel to each other, and the locating base surface 111 is parallel to the locating surface 150.

[0050] The above design not only makes the target recognition member 200 more easily recognize the locating target 100, thereby significantly improving the accuracy of recognition, but also significantly reduces the influence of light changes on the recognition operation, ensuring that the target recognition member 200 can still maintain good recognition performance under different light conditions; in addition, the above design also significantly improves the stability and adaptability of the locating target 100, and significantly reduces the manufacturing difficulty and cost.

[0051] Referring to Figure 3 and Figure 4 In an embodiment, the number of locating bodies is three, and the three locating bodies are a first locating body 120, a second locating body 130, and a third locating body 140, which are sequentially arranged; the spacing between the locating surface 150 on the first locating body 120, the second locating body 130, and the third locating body 140 and the locating base surface 111 gradually increases or gradually decreases.

[0052] In the embodiment, the arrangement direction of the first locating body 120, the second locating body 130, and the third locating body 140 is formed as a preset direction; the preset direction is parallel to the vertical direction, and in other embodiments, the preset direction can also have an included angle with the vertical direction. The above design significantly reduces the manufacturing difficulty and cost of the locating target 100. In other embodiments, the number of locating bodies can also be two, four, five, or more, and the plurality of locating bodies can be sequentially arranged, annularly arranged, or spaced apart.

[0053] Referring to Figure 3 and Figure 4 In an embodiment, the locating base surface 111 and each locating surface 150 are provided with a feature recognition component 160 for recognition by the target recognition member 200.

[0054] In the embodiment, the feature recognition component 160 comprises a feature recognition body 161 and a feature recognition body 162. The feature recognition body 161 is a flat plate, and each of the positioning base surface 111 and the positioning surface 150 is provided with a mounting groove. The feature recognition body 161 is mounted in the corresponding mounting groove in a fixed manner, specifically, the feature recognition body 161 can be fixedly mounted in the corresponding mounting groove in an adhesive manner. The feature recognition body 162 is fixedly mounted on the groove bottom of the feature recognition body 161 away from the corresponding mounting groove. The feature recognition body 162 is a concave circular spot. In other embodiments, the feature recognition body 162 can also have a shape of a square, a triangle, a polygon, a circular protrusion, a stripe, a grid, an icon, an outline of an animal or an object, a wavy line or a curve, or a three-dimensional shape or a planar shape. The feature recognition component 160 not only provides obvious feature points, thereby facilitating the target recognition member 200 to recognize and position, but also increases the geometric features of the positioning target 100, thereby improving the positioning accuracy. In addition, the feature recognition component 160 can also weaken the influence of light changes and reflections.

[0055] Reference Figures 1 to 5 In an embodiment, the number of the positioning targets 100 is two. The two positioning targets 100 are respectively arranged on two cameras and are oppositely arranged. The number of the target recognition members 200 is two. The two target recognition members 200 are respectively arranged in one-to-one correspondence with the two positioning targets 100. The two target recognition members 200 are respectively arranged on the two cameras and can respectively recognize the corresponding positioning targets 100.

[0056] In the embodiment, one of the two positioning targets 100 is a first positioning target 100, and the other is a second positioning target 100. One of the two target recognition members 200 is a first target recognition member 200, and the other is a second target recognition member 200. The first positioning target 100 is arranged on the first camera 300, and the first target recognition member 200 is arranged on the second camera 400. The second positioning target 100 is arranged on the second camera 400, and the second target recognition member 200 is arranged on the first camera 300. Meanwhile, the positioning surface 150 on the first positioning target 100 is arranged towards the second positioning target 100, and the positioning surface 150 on the second positioning target 100 is arranged towards the first positioning target 100. The two positioning targets 100 and the two target recognition members 200 not only help to optimize the calculation of depth information, thereby significantly improving the accuracy of three-dimensional reconstruction, but also help to quickly register images, thereby significantly improving the efficiency and quality of image processing, and significantly reducing time and cost. In addition, the two positioning targets 100 and the two target recognition members 200 can also be used to position and correct cameras that have just been assembled or whose positions have changed, thereby quickly identifying and correcting mechanical errors and installation errors, and ensuring that the detection accuracy of the camera device always remains at a high level.

[0057] Referring to Figures 6 to 8 In an embodiment, the plurality of positioning bodies are detachably mounted on the positioning body 110. In the embodiment, the first positioning body 120, the second positioning body 130, and the third positioning body 140 are detachably mounted on the positioning body 110 by using connecting screws. By using the above design, the shape of the positioning target 100 can be changed so as to adapt to different environments. In other embodiments, the positioning target 100 can also be a one-piece structure.

[0058] Referring to Figures 6 to 8 In an embodiment, the plurality of positioning bodies are detachably mounted on the positioning body 110. In the embodiment, the first positioning body 120, the second positioning body 130, and the third positioning body 140 are detachably mounted on the positioning body 110 by using connecting screws. By using the above design, the shape of the positioning target 100 can be changed so as to adapt to different environments. In other embodiments, the positioning target 100 can also be a one-piece structure.

[0059] The adjusting rod 170 is provided with a plurality of adjusting holes 171 which are spaced apart along the length direction of the adjusting rod 170. The surface of the positioning body 110 is provided with a plurality of limiting holes 113, the number of the limiting holes 113 is the same as the number of the mounting holes 112, the plurality of limiting holes 113 are respectively and one-to-one correspondingly arranged with the plurality of mounting holes 112 and communicate with the corresponding mounting holes 112, and the extension direction of the limiting hole 113 and the extension direction of the corresponding mounting hole 112 have an included angle. The adjusting rod 170 is mounted in the mounting hole 112 by passing through the limiting hole 113 and being inserted into any one of the plurality of adjusting holes 171 through the connecting member.

[0060] In the embodiment, the three adjusting rods 170 are fixedly mounted on the surfaces of the first positioning body 120, the second positioning body 130, and the third positioning body 140 close to the surface of the positioning body 110 and are perpendicular to the positioning base surface 111. In other embodiments, the included angle between the length direction of the adjusting rod 170 and the positioning base surface 111 can also be an acute angle. The extension direction of the limiting hole 113 is perpendicular to the extension direction of the corresponding mounting hole 112. In other embodiments, the included angle between the extension direction of the limiting hole 113 and the extension direction of the corresponding mounting hole 112 can also be an acute angle. The plurality of adjusting holes 171 are spaced apart along the preset direction, and the connecting member is a connecting pin or a connecting rod. The adjusting rod 170 is mounted in the mounting hole 112 by passing through the limiting hole 113 and being inserted into any one of the plurality of adjusting holes 171 through the connecting member. Not only can the positioning body be detachably mounted on the positioning body 110 so that the shape of the positioning target 100 can be changed, but also the spacing between the positioning surface 150 and the positioning base surface 111 can be changed so that the shape of the positioning target 100 can be finely adjusted.

[0061] Referring to Figures 1 to 9 According to another aspect of the present application, the embodiments of the present application also provide a camera device, which comprises two spaced cameras and the positioning assembly described above; one of the two cameras is a first camera 300, and the other is a second camera 400; the positioning target 100 is installed on the surface of the first camera 300 close to the second camera 400, and the target recognition member 200 is installed on the surface of the second camera 400 close to the first camera 300.

[0062] In the embodiments of the present application, the first camera 300 and the second camera 400 can both be industrial cameras, and the first camera 300 and the second camera 400 are spaced along the horizontal direction. In other embodiments, the target recognition member 200 can also be installed on the first camera 300, and the positioning target 100 can be installed on the second camera 400.

[0063] Before the camera device is ready to capture images for four-wheel positioning, the positioning target 100 is first installed on one of the two cameras, and the target recognition member 200 is installed on the other camera; then the target recognition member 200 identifies the positioning target 100, so that the two cameras identify the relative positions of each other; and then the two cameras in the camera device capture images for four-wheel positioning. The positioning assembly provided can make the two cameras in the camera device accurately identify the relative positions of each other, which not only helps to optimize the calculation of depth information, thereby improving the accuracy of three-dimensional reconstruction, but also helps to quickly register images, thereby improving the efficiency and quality of image processing, and reducing time and cost. In addition, the positioning assembly provided can also position and correct the cameras that have just been assembled or whose positions have changed, thereby helping to identify and correct mechanical errors and installation errors, and ensuring that the detection accuracy of the camera device always remains at a high level.

[0064] Referring to Figures 1 to 3 、 Figure 5 、 Figure 9 、 Figure 10 and Figure 12The camera device is used on the front side or the rear side of the vehicle and is used to capture images of the targets 800 on the wheels 900 of the vehicle; the vehicle comprises four wheels 900, two of which are located on the same side and the other two are located on the other side; the first camera has a first capturing component 310 mounted on a first surface of the first camera for capturing images of the targets 800 on the two wheels 900 located on the same side; the positioning target is mounted on a second surface of the first camera, which is arranged adjacent to the first surface of the first camera; the second camera has a second capturing component 410 mounted on a third surface of the second camera for capturing images of the targets 800 on the two wheels 900 located on the other side; the target recognition member is mounted on a fourth surface of the second camera, which is arranged adjacent to the third surface of the second camera.

[0065] In the embodiment, the target 800 can be any one of a reflective target, a circular or square planar target, a laser target or a three-dimensional target, and the specific form and structure of the target 800 can be determined according to actual needs; the first capturing component 310 is a capturing lens, and the number of the first capturing component 310 is two; the second capturing component 410 is a capturing lens, and the number of the second capturing component 410 is two.

[0066] After the first camera 300 and the second camera 400 recognize the relative positions of each other by means of the positioning target 100 and the target recognition member 200, then the first capturing component 310 captures images of the targets 800 on the two wheels 900 located on the same side, and the second capturing component 410 captures images of the targets 800 on the two wheels 900 located on the other side, so as to perform four-wheel alignment.

[0067] Referring to Figure 2 , Figure 3 , Figure 10 and Figure 11 In an embodiment, the positioning target 100 is detachably mounted on the first camera 300. In the embodiment, the positioning target 100 is detachably mounted on the first camera 300 by means of connecting screws; the above design reduces the assembly difficulty of the camera device. In other embodiments, the positioning target 100 can also be fixedly mounted on the first camera 300 by means of welding.

[0068] Referring to Figure 2 , Figure 3 , Figure 10 and Figure 11In an embodiment, the first camera 300 is provided with a first mounting groove 320 on the surface close to the second camera 400, and a partial structure of the positioning target 100 is mounted in the first mounting groove 320. A support structure 330 is mounted on the bottom of the first mounting groove 320, and the support structure 330 protrudes towards the opening of the first mounting groove 320. The positioning target 100 is mounted on the support structure 330 by fasteners.

[0069] In the embodiment, the support structure 330 is a support strip, and a plurality of support structures 330 are provided and spaced apart. The fastener is a fastening screw, and in other embodiments, the fastener can also be a fastening rod or a fastening pin. The support structure 330 plays a supporting role, and in combination with the mounting groove, it helps to improve the stability of the positioning target 100 on the first camera 300 in a dynamic or vibrating environment. The first mounting groove 320 also serves to accommodate the positioning target 100, which helps to reduce the size of the camera device.

[0070] Referring to Figure 5 , Figure 12 and Figure 13 , in an embodiment, the target recognition member 200 is detachably mounted on the second camera 400. In the embodiment, the target recognition member 200 is detachably mounted on the second camera 400 by a connecting screw; this design reduces the assembly difficulty of the camera device. In other embodiments, the target recognition member 200 can also be fixedly mounted on the second camera 400 by welding.

[0071] Referring to Figure 5 , Figure 12 and Figure 13 , in an embodiment, the second camera 400 is provided with a second mounting groove 420 on the surface close to the first camera 300, and the target recognition member 200 is detachably mounted in the second mounting groove 420 by fasteners.

[0072] In the embodiment, the fastener is a fastening screw, and in other embodiments, the fastener can also be a fastening rod or a fastening pin. The second mounting groove 420 serves to accommodate the target recognition member 200, which helps to reduce the size of the camera device.

[0073] Referring to Figures 1 to 13 , according to another aspect of the present application, the embodiments of the present application further provide a four-wheel positioning system, which comprises a column 500, a base 600, a cross beam 700, a control component and the camera device described above. The column 500 is fixedly connected with the base 600, the cross beam 700 is supported by the column 500 and can be raised or lowered relative to the column 500, the camera device is mounted on the cross beam 700 and electrically connected with the control component.

[0074] In the embodiment of the present application, the column 500 is vertically arranged, the base 600 is located below the column 500, and the cross beam 700 is horizontally arranged; the first camera 300 and the second camera 400 are respectively installed at opposite ends of the cross beam 700. The column 500, the base 600 and the cross beam 700 used in cooperation not only play the role of installing and bearing the camera device, but also play the role of adjusting the position of the camera device. The control component is a controller or a control box, and the target recognition member 200, the first camera 300 and the second camera 400 are electrically connected with the control component to perform algorithm processing on the images captured by the target recognition member 200, the first camera 300 and the second camera 400, so as to give the measurement result; the control component arranged not only plays the role of converting the image into visual information, but also can realize linkage of each component in the four-wheel alignment device, so as to realize automatic processing and effectively improve the processing efficiency of the four-wheel alignment device.

[0075] In summary, the positioning assembly, the camera device and the four-wheel alignment system provided by the embodiment have at least the following beneficial technical effects: before the camera device is ready to capture images for four-wheel alignment, the positioning target 100 is first installed on one of the two cameras, and the target recognition member 200 is installed on the other of the two cameras; then the target recognition member 200 recognizes the positioning target 100, so that the two cameras recognize the relative positions of each other; then the two cameras in the camera device capture images for four-wheel alignment. The positioning assembly arranged can make the two cameras in the camera device accurately recognize the relative positions of each other, which not only helps to optimize the calculation of depth information, thereby improving the accuracy of three-dimensional reconstruction, but also helps to quickly register the images, thereby improving the efficiency and quality of image processing and reducing time and cost. In addition, the positioning assembly arranged can also position and correct the camera just after assembly or position change, so as to identify and correct mechanical errors and installation errors, and ensure that the detection accuracy of the camera device always remains at a high level. In addition, the positioning base surface 111 is not coplanar with the positioning surface 150, and each positioning surface 150 is not coplanar with each other, which makes the shape of the positioning target 100 form a three-dimensional shape. This three-dimensional design gives the positioning target 100 a unique profile and features, so that the positioning target 100 can provide more depth information, so that the target recognition member 200 can more easily recognize the positioning target 100 and judge the position of the positioning target 100; the positioning base surface 111 and the plurality of positioning surfaces 150 arranged also weaken the influence caused by shielding, so as to ensure that the positioning recognition member can always recognize the positioning target 100.

[0076] The above merely provides preferred embodiments of the present application, and is not used to limit the present application. Any modification, equivalent replacement, and improvement made in the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A positioning assembly, characterized by A camera device comprising two cameras arranged at intervals; The positioning assembly comprises a positioning target and a target recognition member, the positioning target is arranged on one of the two cameras, and the target recognition member is arranged on the other of the two cameras and can recognize the positioning target; The positioning target comprises a positioning body and at least two positioning bodies, the positioning body has a positioning base surface, the positioning bodies are arranged on the positioning base surface, the surface of the positioning bodies away from the positioning base surface is a positioning surface, the positioning base surface and the positioning surface are not coplanar, and each of the positioning surfaces is not coplanar with each other.

2. The positioning assembly of claim 1, wherein, The positioning base surface is parallel to at least one of the positioning surfaces; and / or, At least two of the positioning surfaces are parallel to each other.

3. The positioning assembly of claim 2, wherein, Each of the positioning surfaces is parallel to each other, and the positioning base surface is parallel to the positioning surfaces.

4. The positioning assembly of claim 3, wherein, The number of the positioning bodies is three, the three positioning bodies are a first positioning body, a second positioning body and a third positioning body, and the first positioning body, the second positioning body and the third positioning body are arranged in sequence. The distance between the positioning surface on the first positioning body, the second positioning body and the third positioning body and the positioning base surface gradually increases or gradually decreases.

5. The positioning assembly of claim 1, wherein, The positioning base surface and each of the positioning surfaces are provided with feature recognition components for the target recognition member to recognize.

6. The positioning assembly of any one of claims 1 to 5, wherein, The number of the positioning targets is two, and the two positioning targets are arranged on the two cameras and arranged oppositely; The number of the target recognition members is two, and the two target recognition members are arranged in one-to-one correspondence with the two positioning targets; and the two target recognition members are arranged on the two cameras and can recognize the corresponding positioning targets, respectively.

7. A camera device, characterized by The camera device comprises two cameras arranged at intervals and the positioning assembly according to any one of claims 1 to 6; One of the two cameras is a first camera, and the other is a second camera; the positioning target is arranged on a surface of the first camera close to the second camera, and the target recognition member is arranged on a surface of the second camera close to the first camera.

8. The camera device of claim 7, wherein, The camera device is arranged on the front side or the rear side of a vehicle and is used to capture images of targets on wheels of the vehicle; the vehicle comprises four wheels, two of the four wheels are arranged on the same side, and the other two wheels are arranged on the other side; The first camera has a first capturing component arranged on a first surface of the first camera and used to capture images of targets on the two wheels arranged on the same side; The positioning target is arranged on a second surface of the first camera, and the first surface of the first camera is arranged adjacent to the second surface of the first camera; The second camera has a second capturing component arranged on a third surface of the second camera and used to capture images of targets on the two wheels arranged on the other side; and The second camera has a second capturing component arranged on a third surface of the second camera and used to capture images of targets on the two wheels arranged on the other side. The target recognition member is mounted on a fourth surface of the second camera, and a third surface of the second camera is arranged adjacent to the fourth surface of the second camera.

9. The camera device of claim 7, wherein, The positioning target is detachably mounted on the first camera; and / or, The first camera is provided with a first mounting groove on a surface close to the second camera, part of the structure of the positioning target is mounted in the first mounting groove, a supporting structure is mounted on the groove bottom of the first mounting groove, the supporting structure is protrudingly arranged towards the slot opening of the first mounting groove, and the positioning target is mounted on the supporting structure through a fastener; And / or, The target recognition member is detachably mounted on the second camera; and / or, The second camera is provided with a second mounting groove on a surface close to the first camera, and the target recognition member is detachably mounted in the second mounting groove through a fastener.

10. A four-wheel alignment system characterized by, The system comprises a column, a base, a crossbeam, a control component and the camera device of any one of claims 6 to 9, the column is fixedly connected with the base, the crossbeam is supported by the column and can be raised or lowered relative to the column, the camera device is mounted on the crossbeam and is electrically connected with the control component.

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