CN112212810A

CN112212810A - Four-wheel positioning system

Info

Publication number: CN112212810A
Application number: CN202011097843.XA
Authority: CN
Inventors: 刘连军
Original assignee: Autel Intelligent Technology Corp Ltd
Current assignee: Autel Intelligent Technology Corp Ltd
Priority date: 2020-10-14
Filing date: 2020-10-14
Publication date: 2021-01-12

Abstract

The embodiment of the invention relates to the technical field of vehicle detection instruments, and discloses a four-wheel positioning system. Comprises a first bracket arranged on a wall body; the first target is arranged on a wheel on one side of a vehicle to be detected, and a preset pattern is arranged on the surface of the first target; the first camera assembly is arranged on the first support; the second bracket and the first bracket are arranged on the wall at intervals; the second target is arranged on the wheel on the other side of the vehicle to be detected, and the surface of the second target is provided with a preset pattern; the second camera assembly is arranged on the second support, the visual field range of the first camera assembly covers the area where the first target is located, and the visual field range of the second camera assembly covers the area where the second target is located; and the processor is respectively connected with the first camera component and the second camera component and is used for receiving a first image of the first target acquired by the first camera component and a second image of the second target acquired by the second camera component and measuring the positioning parameters of the wheels on two sides of the vehicle to be measured according to the first image and the second image.

Description

Four-wheel positioning system

Technical Field

The embodiment of the invention relates to the technical field of vehicle detection instruments, in particular to a four-wheel positioning system.

Background

The four-wheel aligner is a precise measuring instrument for detecting wheel alignment parameters of an automobile, obtains the wheel alignment parameters through a camera device, compares the wheel alignment parameters with design parameters of an original factory, and guides a user to adjust the wheel alignment parameters to meet the original design requirements so as to ensure that the automobile runs stably and reduce tire wear.

In the process of implementing the invention, the inventor finds that: the current four-wheel aligner needs to occupy a large space, is complex to install and is inconvenient to operate in a limited test space.

Disclosure of Invention

The embodiment of the invention provides a four-wheel positioning system, wherein a first camera component and a second camera component can be independently arranged on a wall body, so that the four-wheel positioning system can conveniently measure positioning parameters of wheels on two sides of a vehicle to be measured.

To solve the above technical problem, an embodiment of the present invention provides a four-wheel positioning system, including: the first bracket is arranged on the wall body; the first target is arranged on a wheel on one side of a vehicle to be detected, and a preset pattern is arranged on the surface of the first target; the first camera assembly is arranged on the first support; the second bracket is arranged on the wall body, and the second bracket and the first bracket are arranged at intervals; the second target is arranged on a wheel on the other side of the vehicle to be detected, and a preset pattern is arranged on the surface of the second target; the second camera assembly is arranged on the second support, the visual field range of the first camera assembly covers the area where the first target is located, and the visual field range of the second camera assembly covers the area where the second target is located; and the processor is respectively connected with the first camera component and the second camera component and is used for receiving a first image of the first target acquired by the first camera component and a second image of the second target acquired by the second camera component and measuring the positioning parameters of the wheels on two sides of the vehicle to be measured according to the first image and the second image.

Optionally, the distance between the first bracket and the second bracket is determined according to the width between two opposite side wheels of the vehicle to be tested, the visual field range of the first camera assembly and the visual field range of the second camera assembly.

Optionally, at least one of the first bracket and the second bracket is movable relative to the wall.

Optionally, a guide rail is disposed on the wall, and the guide rail is used for guiding a moving direction of at least one of the first bracket and the second bracket.

Optionally, the guide rail comprises a vertical guide rail, and the vertical guide rail is perpendicular to the bearing surface of the vehicle to be tested.

Optionally, the guide rail includes a horizontal guide rail, the horizontal guide rail is used for adjusting a horizontal distance between the first bracket and the second bracket, and the horizontal distance is a distance between the first bracket and the second bracket when a connection line between the first bracket and the second bracket is parallel to a bearing surface of the vehicle to be measured.

Optionally, at least one of the first bracket and the second bracket is detachably mounted to the wall.

Optionally, a mounting frame is arranged on the wall, and at least one of the first support and the second support is detachably mounted on the mounting frame.

Optionally, the number of the mounting racks is at least two, and the heights of at least two of the mounting racks are different.

Optionally, the first image acquisition assembly can rotate relative to the first support; and/or the second image capturing assembly may be rotatable relative to the second support.

Optionally, the first image acquisition assembly can rotate around a horizontal shaft relative to the first support, and the horizontal shaft is parallel to the bearing surface of the vehicle to be detected; and/or the second image capturing assembly may be rotatable relative to the second support about the horizontal axis.

Optionally, the four-wheel positioning system further comprises: and the display equipment is arranged on the wall body and used for displaying the positioning parameters.

The embodiment of the invention has the beneficial effects that: different from the situation in the prior art, an embodiment of the present invention provides a four-wheel positioning system, where when positioning parameters of wheels on two sides of a vehicle to be measured need to be measured, a first target is installed on a wheel on one side of the vehicle to be measured, a second target is installed on a wheel on the other side of the vehicle to be measured, and a first bracket and a second bracket are installed on a wall at intervals, a visual field range of a first camera component covers an area where the first target is located, a visual field range of a second camera component covers an area where the second target is located, and a processor is connected to the first camera component and the second camera component respectively and is configured to receive a first image of the first target collected by the first camera component and a second image of the second target collected by the second camera component, and according to the first image and the second image, the positioning parameters of the wheels on two sides of the vehicle to be measured can be.

Drawings

One or more embodiments are illustrated by, and not limited to, the figures of the accompanying drawings in which like reference numerals refer to similar elements

Numbered elements are referred to as similar elements and unless otherwise specifically noted, the figures in the drawings are not to scale.

Fig. 1 is a usage scenario diagram of a four-wheel positioning system according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of the first support, first camera assembly, and calibration camera of the four-wheel alignment system shown in FIG. 1;

FIG. 3 is a schematic diagram of the second mount, second camera assembly, and calibration target of the four-wheel alignment system shown in FIG. 1;

FIG. 4 is a diagram illustrating a usage scenario of a four-wheel alignment system according to another embodiment of the present invention;

FIG. 5 is a diagram illustrating a usage scenario of a four-wheel alignment system according to another embodiment of the present invention;

FIG. 6 is a diagram illustrating a usage scenario of a four-wheel alignment system according to another embodiment of the present invention;

FIG. 7 is a diagram illustrating a usage scenario of a four-wheel alignment system according to another embodiment of the present invention;

fig. 8 is a usage scenario diagram of a four-wheel positioning system according to another embodiment of the present invention.

Detailed Description

In order to facilitate an understanding of the invention, the invention is described in more detail below with reference to the accompanying drawings and detailed description. It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. The terms "vertical," "horizontal," "left," "right," "inner," "outer," and the like as used herein are for descriptive purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

Referring to fig. 1, a four-wheel alignment system 01 according to the present invention is used for measuring alignment parameters of wheels of a vehicle to be measured. The positioning parameters of the wheels of the vehicle to be measured can be divided into front wheel positioning parameters and rear wheel positioning parameters, wherein the front wheel positioning parameters comprise a kingpin caster angle, a kingpin inclination angle, a front wheel camber angle and a front wheel toe-in angle, and the rear wheel positioning parameters comprise a wheel camber angle and one-by-one rear wheel toe-in. Of course, the positioning parameters measured by the four-wheel positioning system 01 according to the embodiment of the present invention are not limited to the above positioning parameters, and other positioning parameters related to the wheels of the vehicle to be measured may also be measured.

Specifically, referring to fig. 1, the four-wheel positioning system 01 includes a first frame 10, a first camera assembly 11, a first target 12, a second frame 20, a second camera assembly 21, a second target 22, and a processor (not shown). The first target 12 and the second target 22 are both mounted on wheels on two opposite sides of a vehicle to be tested, the first target 12 and the second target 22 are both provided with preset patterns, the first support 10 and the second support 20 are both mounted on a wall, the first support 10 and the second support 20 are arranged at intervals, the first camera component 11 is arranged on the first support 10, the second camera component 21 is arranged on the second support 20, the visual field range of the first camera component 11 covers the area where the first target 12 is located, and the visual field range of the second camera component 21 covers the area where the second target 22 is located. The processor is respectively connected with the first camera component 11 and the second camera component 21, and is configured to receive a first image of a preset pattern of the first target 12 acquired by the first camera component 11 and a second image of a preset pattern of the second target 22 acquired by the second camera component 21, and measure positioning parameters of wheels on two sides of the vehicle to be measured according to the first image and the second image.

The "wall body" in the embodiment of the present application refers to a plane body approximately perpendicular to a plane supporting the vehicle to be measured in the measurement space, and the plane body may face the head or the tail of the vehicle to be measured.

The first support 10 and the second support 20 are arranged at intervals in the embodiment of the present application, that is, a certain distance exists between the first support 10 and the second support 20, the distance may include at least one of a horizontal distance and a vertical distance, and the first support 10 and the second support 20 are respectively arranged on two sides of the vehicle to be measured, and may form a symmetrical relationship with a central axis plane of the vehicle to be measured. The middle axial plane of the vehicle to be tested is arranged along the length direction of the vehicle, and the vehicle to be tested is symmetrical relative to the middle axial plane.

The relative position relationship between the first camera assembly 11 and the second camera assembly 21 is known, and the processor can establish a uniform coordinate system in the space according to the relative position relationship, so as to locate each wheel.

The relative position relationship between the first camera assembly 11 and the second camera assembly 21 can be determined according to the calibration camera and the calibration target in the first camera assembly 11 and the second camera assembly 21, wherein one of the first camera assembly 11 and the second camera assembly 21 includes the calibration camera, and the other includes the calibration target, and the calibration camera determines the relative position relationship between the first camera assembly 11 and the second camera assembly 21 by acquiring an image of the calibration target.

Alternatively, the relative positional relationship of the first camera assembly 11 and the second camera assembly 21 is determined by the relative positional relationship of the first support 10 and the second support 20, the positional relationship of the first camera assembly 11 with respect to the first support 10, and the positional relationship of the second camera assembly 21 with respect to the second support 20.

The first stand 10 and the second stand 20 may be at the same height to simplify the relative coordinates determined by the first camera assembly 11 and the second camera assembly 21, or the first stand 10 and the second stand 20 may not be at the same height, which reduces the difficulty of installing the first stand 10 and the second stand 20 on the wall.

The area of the first target 12 in the embodiment of the present application refers to a space range including a wheel on one side of the vehicle to be tested and the first target 12 mounted on the wheel. The area where the second target 22 is located is within a spatial range including the wheel on the other side of the vehicle to be tested and the second target 22 mounted on the wheel.

Referring to fig. 2, the first bracket 10 includes a first fixing base 101, a first fixing arm 102 and a second fixing arm 103. The first fixing base 101 is used for being installed on a wall, the first fixing arm 102 and the second fixing arm 103 are oppositely disposed on the first fixing base 101, and the first fixing arm 102 and the second fixing arm 103 are respectively connected to two sides of the first camera assembly 11.

With respect to the first target 12 described above, and with continued reference to fig. 1, the first target 12 includes at least one of a first front target 121 and a first rear target 122. The first front target 121 is mounted on a front wheel of one side of the vehicle to be tested, and the first rear target 122 is mounted on a rear wheel of one side of the vehicle to be tested.

With respect to the first camera assembly 11, please continue to refer to fig. 2, the first camera assembly 11 includes at least one of a first camera 111 and a second camera 112. The first camera 111 and the second camera 112 are connected to the processor, respectively, and both sides of the first camera 111 and the second camera 112 are connected to the first fixing arm 102 and the second fixing arm 103. The field of view of the first camera 111 covers the area where the first front target 121 on one side of the vehicle to be tested is located, and the field of view of the second camera 112 covers the area where the first rear target 122 on one side of the vehicle to be tested is located.

Referring to fig. 3, the second bracket 20 includes a second fixing base 201, a third fixing arm 202 and a fourth fixing arm 203. The second fixing base 201 is configured to be mounted on a wall, the third fixing arm 202 and the fourth fixing arm 203 are disposed opposite to the second fixing base 201, and the third fixing arm 202 and the fourth fixing arm 203 are respectively connected to two sides of the second camera module 21.

With respect to the second target 22, and with continued reference to fig. 1, the second target 22 includes at least one of a second front target 221 and a second rear target 222. The second front target 221 is mounted on the front wheel on the other side of the vehicle to be tested, and the second rear target 222 is mounted on the rear wheel on the other side of the vehicle to be tested.

With respect to the second camera module 21, please continue to refer to fig. 3, the second camera module 21 includes at least one of a third camera 211 and a fourth camera 212. The third camera 211 and the fourth camera 212 are connected to the processor, respectively, and both sides of the third camera 211 and the fourth camera 212 are connected to the third fixing arm 202 and the fourth fixing arm 203. The visual field range of the third camera 211 covers the area where the second front target 221 on the other side of the vehicle to be tested is located, and the visual field range of the fourth camera 212 covers the area where the second rear target 222 on the other side of the vehicle to be tested is located.

It can be understood that: the first camera 111, the second camera 112, the third camera 211, and the fourth camera 212 may be devices having only an image capturing function, such as an image capturing sensor, a camera, or a video camera, or may be devices having an image capturing function and capable of processing images, and may perform processing such as format conversion, storage, pixel calculation, clipping, or assignment on the images. The first camera 111, the second camera 112, the third camera 211 and the fourth camera 212 are all used for acquiring image data of objects in an area where wheels of a vehicle to be detected are located.

It should be noted that: the distance between the first bracket 10 and the second bracket 20 is determined according to the width between the opposite side wheels of the vehicle to be measured, the visual field range of the first camera assembly 11, and the visual field range of the second camera assembly 21.

In some scenarios, when the head of the vehicle to be tested is placed in front of the wall, and the left and right corners of the head of the vehicle to be tested are symmetrical along the vertical plane where the center of the vehicle to be tested is located, the first target 12 and the second target 22 are respectively installed on the wheels on the two opposite sides of the vehicle to be tested, after the first target 12 and the second target 22 are adjusted by a preset angle, the first bracket 10 is installed on the wall, so that the field of view of the first camera assembly 11 covers the area where the first target 12 on one side of the vehicle to be tested is located, and so that the first camera assembly 11 can acquire a preset pattern on the first target 12, and then the installation position of the second bracket 20 and the distance between the second bracket 20 and the first bracket 10 are determined according to the installation position of the first bracket 10 and the width between the two opposite sides of the vehicle to be tested, so that the field of view of the second camera assembly 21 covers the area where the wheels on the other side of the, and to enable the second camera assembly 21 to acquire a predetermined pattern on the second target 22.

In other scenes, when the head of the vehicle to be tested is arranged in front of the wall body, and the left and right angles of the head of the vehicle to be tested are symmetrical along the vertical plane where the center of the vehicle to be tested is located, the first target 12 and the second target 22 are respectively installed on the wheels at two opposite sides of the vehicle to be measured, after the preset angle is adjusted between the first target 12 and the second target 22, the first bracket 10 and the second bracket 20 are installed on the wall according to the width between the two opposite side wheels of the vehicle to be measured, so that the visual field of the first camera assembly 11 covers the area where the first target 12 on one side of the vehicle to be tested is located, and the first camera component 11 can acquire the preset pattern on the first target 12, the visual field range of the second camera component 21 covers the area where the second target 22 on the other side of the vehicle to be tested is located, and the second camera component 21 can acquire the preset pattern on the second target 22.

In some embodiments, to accurately determine the relative position between the first support 10 and the second support 20, the four-wheel positioning system 01 further includes a calibration assembly 30. The calibration assembly 30 is used to determine the position between the first support 10 and the second support 20.

Specifically, with continued reference to fig. 1, the calibration assembly 30 includes a calibration camera 301 and a calibration target 302. The calibration camera 301 is connected to the processor, the calibration camera 301 is disposed at an adjacent side of the first camera 111 and the second camera 112, the calibration target 302 is fixed at an adjacent side of the third camera 211 and the fourth camera 212, a preset pattern is disposed on a target surface of the calibration target 302, and a visual field of the calibration camera 301 can cover an area where the calibration target 302 is located, so as to collect the preset pattern on the target surface of the calibration target 302. The processor identifies the position between the first camera 111 and the second camera 112 according to a preset pattern on the target surface of the calibration target 302 acquired by the calibration camera 301.

In some embodiments, at least one of the first bracket 10 and the second bracket 20 is movable relative to the wall to adjust the relative position between the first bracket 10 and the second bracket 20.

In some embodiments, referring to fig. 4, four-wheel aligner system 01 includes two guide rails 40. The two guide rails 40 can be mounted on a wall, the first bracket 10 and the second bracket 20 are respectively mounted on the two guide rails 40, and the first bracket 10 slides along one guide rail and the second bracket 20 slides along the other guide rail. Of course, in other embodiments, only one guide rail may be included, and one of the first bracket 10 and the second bracket 20 is mounted on the guide rail, so that at least one of the first bracket 10 and the second bracket 20 is mounted on the guide rail, and the guide rail is used for guiding the moving direction of at least one of the first bracket and the second bracket, thereby adjusting the relative position between the first bracket 10 and the second bracket 20.

In some embodiments, referring to fig. 5 and 6 together, the guide rail 40 includes a vertical guide rail 401, the vertical guide rail 401 is perpendicular to a supporting surface of the vehicle to be tested, at least one of the first bracket 10 and the second bracket 20 is mounted on the vertical guide rail 401, and the vertical guide rail 401 is used for the height of the bracket mounted thereon.

When the number of the vertical guide rails 401 may be two, the two vertical guide rails 401 are respectively a first vertical guide rail (not shown) and a second vertical guide rail (not shown), the first vertical guide rail and the second vertical guide rail are installed on the wall at an interval, and are all located on the same horizontal line, the first bracket 10 is installed on the first vertical guide rail, and the second bracket 20 is installed on the second vertical guide rail, so that the heights of the first bracket 10 and the second bracket 20 can be adjusted.

To facilitate mounting of the first bracket 10 to the first vertical rail (not shown), and mounting of the second bracket 20 to the second vertical rail (not shown). The first fixing base 101 is provided with a first clamping portion (not shown), the first clamping portion is clamped to the first vertical guide rail, and the first clamping portion can slide relative to the first vertical guide rail, wherein the first vertical guide rail is used for guiding the first fixing base 101 to move in the height direction of the wall. The second fixing base 201 is provided with a second clamping portion (not shown), which is clamped to the second vertical guide rail and can slide relative to the second vertical guide rail, wherein the second vertical guide rail is used for guiding the second fixing base 201 to move in the height direction of the wall. When the heights of the first support 10 and the second support 20 need to be adjusted, the first support 10 and the second support 20 can be slid respectively, so that the heights of the first support 10 and the second support 20 can be adjusted.

In some embodiments, referring to fig. 7 and 8, the guide rail 40 further includes a horizontal guide rail 402, the horizontal guide rail 402 is parallel to a supporting surface of the vehicle to be tested, at least one of the first bracket 10 and the second bracket 20 is mounted on the horizontal guide rail 402, and the horizontal guide rail is used for adjusting a horizontal distance between the first bracket and the second bracket, wherein the horizontal distance is a distance between the first bracket and the second bracket when a connecting line between the first bracket and the second bracket is parallel to a bearing surface of the vehicle to be tested.

When the number of the horizontal rails 402 is two, the two horizontal rails 402 are a first horizontal rail (not shown) and a second horizontal rail (not shown), respectively, the first horizontal rail and the second horizontal rail are installed on the wall body at an interval in parallel, and the first horizontal rail and the second horizontal rail are all on the same horizontal line. When the horizontal distance between the first support 10 and the second support 20 needs to be adjusted, the first support 10 and the second support 20 are respectively slid, so that the horizontal distance between the first support 10 and the second support 20 can be adjusted.

For convenience of mounting the first bracket 10 to the first horizontal guide rail, and the second bracket 20 is mounted to the second horizontal guide rail. First fixing base 101 is equipped with third joint portion, and third joint portion joint in first horizontal guide rail to third joint portion can slide for first horizontal guide rail, and wherein, first horizontal guide rail is used for guiding first fixing base 101 to remove on the length direction of wall body. The second fixing base 201 is provided with a fourth clamping portion, which is clamped to the second horizontal guide rail, and the fourth clamping portion can slide relative to the second horizontal guide rail, wherein the second horizontal guide rail is used for guiding the second fixing base 201 to move in the length direction of the wall.

It should be noted that in some embodiments, both horizontal and vertical rails may exist, and one of the first and

second brackets

10 and 20 is mounted to the horizontal rail and the other is mounted to the vertical rail.

In some embodiments, the four-wheel alignment system 01 further includes a fixing plate (not shown) installed on the wall, the fixing plate is provided with a plurality of insertion grooves (not shown), and the plurality of insertion grooves are arranged at equal intervals along the height direction and the length direction of the wall.

The first support 10 and the second support 20 are respectively provided with a first plug connector (not shown) so that the first support 10 and the second support 20 are plugged into the plugging grooves to fix the first support 10 and the second support 20.

When the widths of the first bracket 10 and the second bracket 20 need to be adjusted, any two first slots are selected from the plurality of first slots in the same row to be inserted, so that the widths of the first bracket 10 and the second bracket 20 can be adjusted.

In some embodiments, at least one of the first bracket 10 and the second bracket 20 is detachably mounted to the wall, for example: the first bracket 10 is fixed on a wall, and the second bracket 20 is detachably mounted on the wall, or the first bracket 10 is detachably mounted on the wall, and the second bracket 20 is fixed on the wall, or the first bracket 10 is detachably mounted on the wall, and the second bracket 20 is detachably mounted on the wall.

The four-wheel positioning system 01 further includes a mounting bracket (not shown), the mounting bracket is disposed on the wall, and the first support 10 and the second support 20 are mounted on the wall through the mounting bracket, that is: at least one of the first bracket 10 and the second bracket 20 is detachably mounted to a mounting bracket, for example: the first support 10 is fixed on the mounting rack, and the second support 20 is detachably mounted on the mounting rack, or the first support 10 is detachably mounted on the mounting rack, and the second support 20 is fixedly mounted, or the first support 10 is detachably mounted on the mounting rack, and the second support 20 is detachably mounted on the mounting rack.

When the first support 10 is detachably mounted on the mounting bracket and the second support 20 is detachably mounted on the mounting bracket, in order to detachably mount the first support 10 and the second support 20, specifically, the mounting bracket is provided with a first locking groove (not shown) and a second locking groove (not shown) at an interval. The first clamping groove comprises a first clamping interface (not shown) and a first groove body (not shown), the first clamping interface is communicated with the first groove body, and the width of the first clamping interface is smaller than that of the first groove body. First fixing base 101 is equipped with first buckle (not shown), first buckle has two kinds of user state of shrink and relaxation, need to install first fixing base 101 when first draw-in groove, extrude first buckle to the state of shrink put into to first cell body through first joint mouth, then loosen, first buckle is in the first cell body of filling of diastolic state, and then realize that first support 10 detachably installs in installing the second draw-in groove and include second joint mouth (not shown) and second cell body (not shown), second joint mouth is linked together with the second cell body, and the width of second joint mouth is less than the width of second cell body. The second fixing base 201 is provided with a second buckle (not shown) which has two using states of contraction and relaxation. When needing to install second fixing base 201 in the second draw-in groove, put into the second cell body through second joint interface with the extrusion of second buckle to the state of shrink, then loosen, the second buckle is in the state of diastole and fills the second cell body, and then realizes that second support 20 detachably installs in the mounting bracket.

In some embodiments, one of the first bracket 10 and the second bracket 20 is directly mounted to the wall, and the other of the first bracket 10 and the second bracket 20 is detachably mounted to the mounting bracket, or alternatively, one of the first bracket 10 and the second bracket 20 is detachably mounted to the wall, and the other of the first bracket 10 and the second bracket 20 is fixed to the mounting bracket.

The first bracket 10 and the second bracket 20 are detachably mounted to the wall body for convenience. Specifically, the first bracket 10 further includes a first fastening member (not shown), the first fixing seat is provided with a first screw hole (not shown), the wall body is provided with a first mounting hole (not shown) corresponding to the first screw hole, and the first fastening member is fixed to the first screw hole and the first mounting hole in a threaded manner, so that the first bracket is detachably mounted on the wall body.

Furthermore, the number of the first fastening pieces, the first screw holes and the first mounting holes is multiple, and a first fastening piece is fixed with a first screw hole and a first mounting hole in a threaded mode. For example, the number of the first fasteners, the first screw holes and the first mounting holes is four, the four first screw holes are arranged around the first fixing seat, and the four first mounting holes are respectively preset on the wall body corresponding to the positions of the four first screw holes.

The second bracket 20 further includes a second fastening member (not shown), the second fixing base 201 is provided with a second screw hole (not shown), the wall body is further provided with a second mounting hole (not shown) corresponding to the second screw hole, and the second fastening member is screwed and fixed with the second screw hole and the second mounting hole respectively, so that the second bracket is detachably mounted on the wall body.

Furthermore, the number of the second fasteners, the second screw holes and the second mounting holes is multiple, and a second fastener is fixed with a first screw hole and a first mounting hole in a threaded manner. For example, the number of the second fastening pieces, the number of the second screw holes and the number of the second mounting holes are four, the four second screw holes are arranged around the second fixing seat, and the four second mounting holes are respectively preset on the wall body corresponding to the positions of the four second screw holes.

In some embodiments, in order to achieve the detachable installation of one of the first bracket 10 or the second bracket 20 to the wall, that is, one of the first bracket 10 or the second bracket 20 is fixed to the wall by screwing so as to achieve the detachable installation to the wall, the other one of the first bracket 10 or the second bracket 20 is fastened to the wall by the first fastening member so as to achieve the non-detachable installation to the wall.

In some embodiments, the first camera assembly 11 further includes a first housing 113, the first camera 111 and the second camera 112 are accommodated in the first housing 113, and the field of view of the first camera 111 can cover the area where the first front target 121 on the side of the vehicle to be tested is located through the first housing 113, and the field of view of the second camera 112 can cover the area where the first rear target 122 on the side of the vehicle to be tested is located through the first housing.

A first rotating shaft (not shown) is protruded from the inner side wall of the first fixing arm 102, a second rotating shaft (not shown) is protruded from the inner side wall of the second fixing arm 103, the first housing 113 is respectively provided with a first shaft hole (not shown) and a second shaft hole (not shown), the first shaft hole and the second shaft hole are both located on the same horizontal line, the first rotating shaft is inserted into the first shaft hole, and the second rotating shaft is inserted into the second rotating shaft, so that the first camera component 11 can rotate around the horizontal shaft in a pitching manner relative to the first bracket 10. It should be noted that: the horizontal axis is parallel to the bearing surface of the vehicle to be measured.

The second camera module 21 further includes a second housing 213, the third camera 211 and the fourth camera 212 are both accommodated in the second housing 213, and the field of view of the third camera 211 can cover the area where the second front target 221 on the other side of the vehicle to be tested is located through the second housing 213, and the field of view of the fourth camera 212 can cover the area where the second rear target 222 on the other side of the vehicle to be tested is located through the second housing.

The first housing 213 is provided with a third shaft hole (not shown) and a fourth shaft hole (not shown), respectively. The third shaft hole and the fourth shaft hole are both located on the same horizontal reference line, a third rotating shaft (not shown) is convexly extended on the inner side wall of the third fixing arm, a fourth rotating shaft (not shown) is convexly extended on the inner side wall of the fourth fixing arm, the third rotating shaft is inserted in the third shaft hole, and the fourth rotating shaft is inserted in the fourth rotating shaft, so that the second camera component 21 can rotate around a horizontal shaft in a pitching mode relative to the second support 20.

It should be noted that: the first housing 113 and the second housing 213 may be transparent housings, opaque housings, or one of the transparent housings and the other opaque housing.

If the first housing 113 and the second housing 213 are both opaque housings; that is, the first casing 113 is an opaque casing, and a first lens hole (not shown) and a second lens hole (not shown) for exposing lenses of the first camera 111 and the second camera 112 are respectively opened on the opaque casing. The second housing 213 is an opaque housing, and a third lens hole (not shown) and a fourth lens hole (not shown) for exposing lenses of the third camera 211 and the fourth camera 212 are respectively opened on the opaque housing.

It can be understood that: in other embodiments, only one of the first camera assembly 11 and the second camera assembly 21 may be rotatable with respect to the corresponding bracket.

For the above-mentioned processor, the processor may include one or more processing units and one or more storage units, and the plurality of processing units or the plurality of storage units may be designed in a distributed or integrated manner. The memory unit may be integrated in the processing unit or may be present separately from the processing unit. The storage unit is used for storing data and executable programs, and the processing unit can calculate the positioning parameters of the wheels according to the images of the wheel targets acquired by the first camera assembly 11 and the second camera assembly 21 by running the executable programs, namely, the wheels are positioned and calculated, and whether the direction of the wheels needs to be calibrated or not is judged.

Several ways of cooperating the operation program executed by the processor and the first camera assembly 11 and the second camera assembly 21 to capture the image of the wheel target will be described. It is understood that several cooperation modes can be realized independently or in a mutual fusion mode.

First, the processor implements static measurements through an arithmetic program. Specifically, the processor respectively controls the first camera component 11 and the second camera component 21 to acquire images of a first target and a second target installed on wheels on two sides of the vehicle to be detected, wherein the images of the first target and the second target include preset patterns. The processor determines the positioning parameters of the wheels on the two sides of the vehicle to be detected by using the acquired images of the target. In one implementation, the vehicle needs to be static at different positions during the measurement process, the processor controls the first camera assembly 11 and the second camera assembly 21 to respectively acquire images of the targets when the vehicle is located at different positions so as to form a group of images, and the processor determines the positioning parameters of the wheels on two sides of the vehicle to be measured by using the group of images.

Second, the processor implements dynamic measurements through an arithmetic program. In one implementation, the processor needs to control the first camera module 11 and the second camera module 21 to acquire images of the target in real time, screen out a target image from the images of the target, and determine the positioning parameters of the wheels on the two sides of the vehicle to be detected according to the target image. For example, in the case that the target rotates along with the rotation of the wheels, the processor screens out a target image comprising a preset pattern from the collected target image, and then determines the positioning parameters of the wheels on two sides of the vehicle to be measured by using the target image. Or, for the situation that the orientation of the target surface does not change along with the rotation of the wheels, the processor respectively controls the first camera component 11 and the second camera component 21 to collect images of the target in real time, and screens out target images from the target images according to preset screening conditions from the collected target images, and further determines the positioning parameters and the like of the wheels on two sides of the vehicle to be tested by using the target images. The preset screening condition may include that the quality of the acquired image meets a preset standard, or an image acquired when the vehicle to be tested is at a preset position, and the like. In another implementation manner, the processor respectively controls the first camera assembly 11 and the second camera assembly 21 to acquire images of the target at some triggering time or when some triggering conditions are met, and determines the positioning parameters of the wheels on the two sides of the vehicle to be detected according to the acquired images. Further, the processor may also screen out a target image from the acquired images and determine wheel positioning parameters based on the target image.

The processor executes any one of the above implementation modes, different implementation modes can be realized by different operation programs, and the processor can call any one of the operation programs according to different application scenes to realize measurement.

In the process of dynamic measurement of the unidirectional movement of the vehicle to be measured, the processor may respectively control the first camera assembly 11 and the second camera assembly 21 to acquire images of the target in real time in the process of the movement of the vehicle, for example, the processor may control the first camera assembly 11 and the second camera assembly 21 to acquire images of the target at some trigger time or when some trigger conditions are met in the process of the movement of the vehicle, and determine the positioning parameters of the wheels on both sides of the vehicle to be measured according to the acquired images. The processor may control the first camera assembly 11 or/and the second camera assembly 21 to rotate to a certain angle or a certain position, so as to acquire an image of the target.

In the process of dynamic measurement of the reciprocating movement of the vehicle, the reciprocating movement of the vehicle to be measured can be divided into a plurality of moving stages, the moving directions of two adjacent moving stages are opposite, the processor can control the camera assembly to collect images of a group of targets in each moving stage, the number of the images of the group of targets is one or more, and the positioning parameters of wheels on two sides of the vehicle to be measured are determined according to the images of a plurality of groups of targets respectively collected in the plurality of moving stages. The way in which the processor acquires the image of the target at each movement phase may be referred to in the above implementation, such as controlling the first camera assembly 11 or/and the second camera assembly 21 to acquire in real time, or controlling the first camera assembly 11 or/and the second camera assembly 21 to acquire at some trigger time or some trigger condition.

Optionally, the four-wheel alignment system 01 described in this embodiment of the application may further include a display device 60, where the display device 60 may be disposed on a wall, and electrically connected to the processor, and configured to display the wheel alignment parameters calculated by the processor, or display images collected by the first camera assembly 11 and the second camera assembly 21, and so on. The display device 60 may be integrated with the processor as a display control terminal.

For example, the display device 60 may be configured as a handheld display, and the handheld display and the processor are communicatively coupled via a wireless communication module. Further, the handheld display may further include a user input device, such as a touch device, for receiving a user instruction and sending the user instruction to the processor through the wireless communication module, so that the processor executes the instruction. The user instruction may include controlling the angle adjustment of the first camera assembly 11 and the second camera assembly 21, controlling the photographing time of the first camera assembly 11 and the second camera assembly 21, respectively, and the like.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A four-wheel aligner system, comprising:

the first bracket is arranged on the wall body;

the first target is arranged on a wheel on one side of a vehicle to be detected, and a preset pattern is arranged on the surface of the first target;

the first camera assembly is arranged on the first support;

the second bracket is arranged on the wall body, and the second bracket and the first bracket are arranged at intervals;

the second target is arranged on a wheel on the other side of the vehicle to be detected, and a preset pattern is arranged on the surface of the second target;

the second camera assembly is arranged on the second support, the visual field range of the first camera assembly covers the area where the first target is located, and the visual field range of the second camera assembly covers the area where the second target is located;

and the processor is respectively connected with the first camera component and the second camera component and is used for receiving a first image of the first target acquired by the first camera component and a second image of the second target acquired by the second camera component and measuring the positioning parameters of the wheels on two sides of the vehicle to be measured according to the first image and the second image.

2. The four-wheel alignment system of claim 1, wherein the distance between the first bracket and the second bracket is determined based on a width between opposite side wheels of the vehicle under test, a field of view of the first camera assembly, and a field of view of the second camera assembly.

3. The four-wheel aligner system of claim 1, wherein at least one of the first bracket and the second bracket is movable relative to the wall.

4. A four-wheel aligner system as claimed in claim 3, comprising a guide rail provided to the wall for guiding a direction of movement of at least one of the first and second brackets.

5. The four-wheel alignment system of claim 4, wherein the guide rails comprise vertical guide rails that are perpendicular to a load bearing surface of the vehicle under test.

6. The four-wheel aligner system of claim 4, wherein the guide rails comprise horizontal guide rails;

the horizontal guide rail is used for adjusting the horizontal distance between the first bracket and the second bracket,

the horizontal distance refers to the distance between the first support and the second support when the connecting line between the first support and the second support is parallel to the bearing surface of the vehicle to be tested.

7. The four-wheel aligner system of claim 1, wherein at least one of the first bracket and the second bracket is removably mounted to the wall.

8. The four-wheel aligner system of claim 7, comprising a mounting bracket;

the mounting bracket is arranged on the wall body, and at least one of the first support and the second support is detachably mounted on the mounting bracket.

9. The four-wheel alignment system of claim 8, wherein the number of the mounting brackets is at least two, and the height of at least two of the mounting brackets is different.

10. The four-wheel aligner system of claim 1, wherein the first camera assembly is rotatable relative to the first support; and/or

The second camera assembly is rotatable relative to the second support.

11. The four-wheel alignment system as claimed in claim 10, wherein the first camera assembly is rotatable relative to the first support about a horizontal axis parallel to a load-bearing surface of the vehicle under test; and/or

The second image capturing assembly is rotatable about the horizontal axis relative to the second support.

12. The four-wheel aligner system of claim 1, wherein the four-wheel aligner system comprises a display device;

the display equipment is arranged on the wall body and used for displaying the positioning parameters.