A mobile large vehicle positioning device convenient for outdoor use

Abstract

The present application relates to a mobile large vehicle positioning device which is convenient for outdoor use, comprising a target, a mobile terminal, a left locator and a right locator, wherein the left locator and the right locator each comprise a mobile base station with rollers and a lifting box, and the mobile base station is provided with a power supply device and a control device; the lifting box is controlled by the lifting device; the left locator is provided with a left lifting box, and the right locator is provided with a right lifting box; the left and right lifting boxes are respectively provided with a wireless signal transmission device and a 3D camera, and are also provided with a positioning camera and a positioning target; the present invention arranges the left locator and the right locator in a split type, which is convenient and flexible during measurement, and has high efficiency; the heights of the left locator and the right locator are variable, which is convenient for storage and transportation, and can realize flow detection; a long-distance narrow-band fill light module and an external fill light device are adopted, and the double fill light enables the present device to be used in various outdoor lighting environments.

Description

Technical Field

[0001] The invention belongs to the technical field of auto repair, and in particular relates to a mobile large vehicle positioning device which is convenient for outdoor use. Background Art

[0002] Current mainstream wheel alignment instruments mostly adopt a "T"-shaped design and use binocular cameras for measurement. This method is bulky, requires a high-quality site, is complex and cumbersome to operate, and is costly. Emerging 3D wheel alignment technology is considered the most promising measurement technology in the industry. By dynamically photographing and analyzing the target, a curve is fitted within the established spatial coordinate system to calculate relevant tire alignment parameters such as toe angle, camber angle, kingpin inclination angle, and caster angle.

[0003] A Chinese patent application numbered 2014204351799, titled "Three-Camera Four-Wheel Aligner," discloses a three-camera four-wheel aligner comprising four aligner target targets, a four-wheel aligner computer, and a left-side aligner and a right-side aligner. The left-side aligner and the right-side aligner are suspended below the ceiling by a first hanger and a second hanger, respectively. The left-side aligner corresponds to the right-side aligner in position. The four aligner target targets are a first aligner target target, a second aligner target target, a third aligner target target, and a fourth aligner target target. The four aligner target targets are respectively fixed on the wheels of the vehicle to be aligned. The left-side aligner and the right-side aligner are respectively connected to the four-wheel aligner computer. The device has the characteristics of simple operation, easy use, and easy maintenance.

[0004] When measuring and locating large vehicles such as trucks (hereinafter referred to as "large vehicles"), this type of instrument requires a large, specialized site, making it difficult to perform measurement and positioning. If testing could be performed in a simple, open-air field, or even on ordinary roads (a mobile testing station), this would significantly improve detection efficiency and reduce costs, greatly facilitating large vehicle drivers. However, open-air fields are often affected by excessive or insufficient ambient light. For example, when the target is set facing away from sunlight (i.e., backlit), the pattern on the target is insufficiently illuminated and the surrounding light intensity is high. This can easily result in the target's front pattern being dark when photographed, making it impossible to recognize or causing significant errors. Summary of the Invention

[0005] The purpose of the present invention is to provide a large vehicle positioning device with a small storage volume, convenient movement or transportation, separate left and right positioning instruments, high measurement accuracy, low error, and the ability to be used in various lighting environments.

[0006] In order to solve the above technical problems, the present invention discloses a mobile large vehicle positioning device that is convenient for outdoor use, comprising a target, a mobile terminal, a left locator and a right locator. The left locator and the right locator each comprise a mobile base station with rollers and a lifting box, the mobile base station being provided with a power supply device and a control device; the lifting box is controlled by a lifting device; the left locator is provided with a left lifting box, and the right locator is provided with a right lifting box;

[0007] The left lifting box is provided with a left wireless signal transmission device, a left 3D camera for obtaining an image of a target on the left side of the vehicle, and a positioning camera for calibrating a position with a right positioning device; the left 3D camera is arranged on the front side of the left lifting box, and the positioning camera is arranged on the right side of the left lifting box; the left 3D camera and the positioning camera are connected to the mobile terminal signal through the left wireless signal transmission device; the right lifting box is provided with a right wireless signal transmission device, a right 3D camera for obtaining an image of a target on the right side of the vehicle, and a positioning target for cooperating with the positioning camera for position calibration, the right 3D camera is arranged on the front side of the right lifting box, and the positioning target is arranged on the left side of the right lifting box; the right 3D camera is connected to the mobile terminal signal through the right wireless signal transmission device;

[0008] The distances between the optical axis of the right 3D camera and the center point of the positioning target in the horizontal and vertical directions are known, and the distances between the optical axis of the left 3D camera and the optical axis of the positioning camera in the horizontal and vertical directions are known. When in use, the left locator and the right locator are respectively arranged on both sides of the front of the car, and the positioning camera and the positioning target are arranged relative to each other. The positioning camera measures the real-time distance and position deviation between the positioning camera and the positioning target by monitoring the positioning target, and then obtains the distance and position deviation between the left 3D camera and the right 3D camera, so as to perform real-time compensation for the wheel measurement, so that during the measurement process, the measurement error caused by the slight movement of the left locator and the right locator can be reduced or eliminated.

[0009] Preferably, when in use, the central optical axis of the positioning camera is set horizontally, and the central optical axis of the positioning camera is at the same height as the geometric center point of the positioning target.

[0010] Preferably, when in use, the camera center optical axis of the left 3D camera is arranged parallel to the camera center optical axis of the right 3D camera.

[0011] Preferably, both the left and right 3D cameras are provided with long-range narrow-band fill light modules. For targets at a longer distance, when the outdoor lighting is insufficient or the light intensity is high and causes obvious interference to photography, the long-range narrow-band fill light module can be used to provide additional fill light for the target when the left or right 3D camera is taking pictures.

[0012] Preferably, it also includes a fill light device for providing close-range fill light to the front of the target target from the upper side of the target target in a strong backlight environment, the fill light device includes a T-shaped bracket, the bracket includes a vertical part and a horizontal part, the lower end of the vertical part is provided with a connecting part, and the upper end of the vertical part is hinged to the midpoint of the horizontal part; one end of the horizontal part is provided with a lighting device, and the other end is provided with a counterweight block for balancing the bracket, and the lighting device is used to provide fill light to the target target from the upper side.

[0013] Preferably, the lighting device includes LED lamp beads.

[0014] Preferably, a limit block is provided on one side of the upper near lighting device of the vertical portion, and the limit block is used to prevent the angle between the horizontal portion and the target from being too small, thereby avoiding the horizontal portion from blocking the target during the vehicle moving measurement process.

[0015] Preferably, the connecting portion is one of a clip, a clamp, a suction cup or a plug. When a fill light device is needed, the fill light device is fixed on the top of the target and fill light is applied obliquely downward from the top of the target to the front of the target.

[0016] Preferably, when the outdoor ambient lighting conditions are good, no fill light is needed or only a long-range narrowband fill light system is needed for fill light; when the sunlight is strong and the target is set with its back to the sunlight, a fill light device is used to fill light on the front of the target.

[0017] The mobile large vehicle positioning device of the present invention, which is convenient for outdoor use, has at least the following advantages:

[0018] (1) The left and right locators are separated, which makes measurement convenient, flexible and efficient;

[0019] (2) The height of the left and right locators can be changed, which is convenient for storage and transportation and can realize flow detection.

[0020] (3) The position difference between the left 3D camera and the right 3D camera is monitored in real time by positioning the camera and the positioning target, and compensation is made in time to reduce the error.

[0021] (4) The device adopts a long-range narrowband fill light module and an external fill light device. The double fill light enables the device to be used in various outdoor lighting environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The diagram is a structural diagram of a mobile vehicle positioning device that is convenient for outdoor use.

[0023] Figure 2 for Figure 1 Schematic diagram of the structure of the center left locator from another perspective.

[0024] Figure 3The figure is a structural diagram of a fill light device.

[0025] The numbers in the figure are: 1-left locator, 2-right locator, 3-roller, 4-lifting device, 5-mobile base station, 6-left lifting box, 61-left wireless signal transmission device, 62-left 3D camera, 63-positioning camera, 7-right lifting box, 71-right wireless signal transmission device, 72-right 3D camera, 73-positioning target, 8-long-range narrow-band fill light module, 9-fill light device, 91-vertical part, 92-horizontal part, 93-connecting part, 94-lighting device, 95-counterweight block, 96-limit block. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below through examples so that those skilled in the art can implement the invention with reference to the description.

[0027] It should be understood that terms such as “having”, “including” and “comprising” used herein do not preclude the existence or addition of one or more other elements or combinations thereof.

[0028] like Figure 1-2 As shown, a mobile large vehicle positioning device that is convenient for outdoor use includes several target blocks, a mobile terminal, a left locator 1 and a right locator 2. The left locator 1 and the right locator 2 each include a mobile base station 5 with rollers 3 and a lifting box. The mobile base station 5 is provided with a power supply device and a control device; the lifting box is controlled by a lifting device 4. In this embodiment, the lifting device adopts a ball bearing plus ball screw design, which is quiet and durable, compact and maintenance-free.

[0029] The left locator 1 is provided with a left lifting box 6, and the right locator 2 is provided with a right lifting box 7; the 3D camera is equipped with a portable mobile station design, the height of which is adjustable in normal working mode and is reduced to the minimum in transport mobile mode, making it a small-volume device that is easy to transport.

[0030] The left lifting box is provided with a left wireless signal transmission device 61, a left 3D camera 62 for obtaining an image of a target on the left side of the vehicle, and a positioning camera 63 for calibrating a position with a right positioning instrument; the left 3D camera is provided on the front side of the left lifting box 6, and the positioning camera 63 is provided on the right side of the left lifting box 6; the left 3D camera 62 and the positioning camera 63 are connected to the mobile terminal signal through the left wireless signal transmission device 61; the right lifting box 7 is provided with a right wireless signal transmission device 71, a right 3D camera 72 for obtaining an image of a target on the right side of the vehicle, and a positioning target 73 for cooperating with the positioning camera for position calibration, the right 3D camera 72 is provided on the front side of the right lifting box 7, and the positioning target 73 is provided on the left side of the right lifting box 7; the right 3D camera 72 is connected to the mobile terminal signal through the right wireless signal transmission device 71;

[0031] The left and right wireless signal transmission devices utilize a universal wireless WiFi-5G technology platform, enabling synchronized image transmission and ensuring high-frame-rate transmission of image data with zero frame loss. Key image data is also completely uncompressed and latency-free, ensuring smooth, reliable, and highly resistant to interference. Furthermore, once the devices are powered on, the left and right wireless signal transmission devices automatically recognize and handshake with left and right 3D cameras, mobile terminals, and other devices within the same network domain. This eliminates the need for complex network IP configuration; the system automatically configures and works immediately upon power-up. Furthermore, it supports automatic reconnection after any device is disconnected after a reboot.

[0032] The horizontal and vertical distances between the optical axis of the right 3D camera 72 and the center point of the positioning target 73 are known, as are the horizontal and vertical distances between the optical axis of the left 3D camera 62 and the optical axis of the positioning camera 63. During use, the left and right positioning devices are located on either side of the front of the vehicle, with a target mounted on each wheel. The positioning cameras and positioning targets are positioned relative to each other. The positioning cameras monitor the positioning targets to measure the real-time distance and position deviation between the positioning cameras and the positioning targets, thereby obtaining the distance and position deviation between the left and right 3D cameras. This allows for real-time compensation of wheel measurements, minimizing or eliminating measurement errors caused by slight shifting of the left and right positioning devices during the measurement process. The ultra-long-range measurement optical system formed by the left and right positioning devices can accurately identify optical target targets with large front-to-back distance differences and can simultaneously identify more than eight target targets, with extremely fast response speed and high accuracy.

[0033] When in use, the central optical axis of the positioning camera 63 is set horizontally, and the central optical axis of the positioning camera is at the same height as the geometric center point of the positioning target 73.

[0034] When in use, the camera center optical axis of the left 3D camera 62 is set parallel to the camera center optical axis of the right 3D camera 72, and the distance between the camera center optical axis of the left 3D camera 62 and the camera center optical axis of the right 3D camera 72 is greater than the distance between a pair of target targets on the same axle.

[0035] Both the left 3D camera 62 and the right 3D camera 72 are provided with a long-range narrow-band fill light module 8. In this embodiment, the positioning camera 63 is also provided with a long-range narrow-band fill light module 8. During use, especially for targets at a long distance, when the outdoor light is insufficient or the light intensity is high and causes obvious interference to the photography, the long-range narrow-band fill light module is used to provide additional fill light for the target when the left 3D camera or the right 3D camera is taking pictures, thereby achieving a stronger outdoor anti-interference capability.

[0036] like Figure 3As shown, it also includes a fill light device 9 for providing close-range fill light to the front of the target from the upper side of the target in a strong backlight environment. The fill light device includes a T-shaped bracket, which includes a vertical portion 91 and a horizontal portion 92. The lower end of the vertical portion is provided with a connecting portion 93, and the upper end of the vertical portion is hinged to the midpoint of the horizontal portion; one end of the horizontal portion is provided with a lighting device 94, and the other end is provided with a counterweight block 95 for balancing the bracket so that the horizontal portion can remain horizontal when the car moves forward. The lighting device 94 is used to provide fill light to the target from the upper side.

[0037] The lighting device 94 includes LED lamp beads.

[0038] A limit block 96 is provided on the upper side of the vertical portion 91 near the lighting device. The limit block is used to prevent the angle between the horizontal portion and the target from being too small (such as less than 90°), thereby avoiding the horizontal portion from blocking the target during vehicle movement measurement.

[0039] The connecting portion 93 is a clip, a clamp, a suction cup, or a plug. When a fill-light device is needed, the fill-light device 9 is fixed to the top of the target, providing fill-light from the top of the target diagonally downward to the front of the target. In this embodiment, the connecting portion 93 is a plug, and a slot compatible with the plug is machined at a corresponding position on the top of the target, thereby securing the fill-light device to the target. During measurement, when the vehicle moves backward, the lighting device moves upward under the action of the limit block, without obstructing the target. When the vehicle moves forward, the horizontal portion remains horizontal or only slightly tilted under the action of the counterweight, and the lighting device still does not obstruct the target. To ensure that the horizontal portion maintains a good leveling effect during long-term use, the counterweight can be designed to be adjustable in position or weight.

[0040] When the outdoor lighting conditions are good, no fill light is needed or only a long-range narrow-band fill light system is needed for fill light. When the sunlight is strong and the target is set with its back to the sunlight, the front pattern of the target captured by the 3D camera will be dark, affecting recognition. Using a fill light device to fill light on the front of the target, especially the target at a farther distance, can effectively improve the recognition effect.

[0041] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the description and implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and embodiments shown and described herein.

Claims

1. A mobile vehicle positioning device convenient for outdoor use, characterized in that: It includes a target, a mobile terminal, a left locator and a right locator. The left locator and the right locator each include a mobile base station with rollers and a lifting box. The mobile base station is provided with a power supply device and a control device. The lifting box is controlled by the lifting device. The left locator is provided with a left lifting box, and the right locator is provided with a right lifting box. The left lifting box is provided with a left wireless signal transmission device, a left 3D camera for obtaining the image of the target on the left side of the vehicle, and a positioning camera for calibrating the position with the right positioning instrument; the left 3D camera is arranged on the front side of the left lifting box, and the positioning camera is arranged on the right side of the left lifting box; the left 3D camera and the positioning camera are connected to the mobile terminal signal through the left wireless signal transmission device; the right lifting box is provided with a right wireless signal transmission device, a right 3D camera for obtaining the image of the target on the right side of the vehicle, and a positioning target for cooperating with the positioning camera for position calibration, the right 3D camera is arranged on the front side of the right lifting box, and the positioning target is arranged on the left side of the right lifting box; the right 3D camera is connected to the mobile terminal signal through the right wireless signal transmission device; The distances between the right 3D camera optical axis and the center point of the positioning target in the horizontal and vertical directions are known, and the distances between the left 3D camera optical axis and the positioning camera optical axis in the horizontal and vertical directions are known. When in use, the left positioning instrument and the right positioning instrument are respectively arranged on both sides of the front of the car, and the positioning camera and the positioning target are arranged relatively. The positioning camera measures the real-time distance and position deviation between the positioning camera and the positioning target by monitoring the positioning target, and then obtains the distance and position deviation between the left 3D camera and the right 3D camera, so as to compensate the wheel measurement in real time, which reduces or eliminates the measurement error caused by the slight movement of the left positioning instrument and the right positioning instrument during the measurement process; It also includes a fill light device for providing close-range fill light to the front of the target target from the upper side of the target target in a strong backlight environment, the fill light device includes a T-shaped bracket, the bracket includes a vertical portion and a horizontal portion, the lower end of the vertical portion is provided with a connecting portion, and the upper end of the vertical portion is hinged to the midpoint of the horizontal portion; one end of the horizontal portion is provided with a lighting device, and the other end is provided with a counterweight block for balancing the bracket, and the lighting device is used to provide fill light to the target target from the upper side; A limit block is provided on one side of the near lighting device at the upper part of the vertical part, and the limit block is used to prevent the angle between the horizontal part and the target from being too small, so as to avoid the horizontal part from blocking the target during the vehicle moving measurement process; When the sunlight is strong and the target is set with its back to the sunlight, a fill light device is used to fill light on the front of the target; The connecting part is one of a clip, a clamp, a suction cup or a plug. When a fill light device is needed for fill light, the fill light device is fixed on the top of the target, and fill light is applied to the front of the target from the top of the target diagonally downward; The left 3D camera and the right 3D camera are both provided with a long-range narrow-band fill-light module. For a target at a long distance, when the outdoor light is insufficient or the light intensity is high and causes obvious interference to the photography, the long-range narrow-band fill-light module is used to provide additional fill-light for the target when the left 3D camera or the right 3D camera is taking pictures; When the outdoor lighting conditions are good, no fill light is needed or only a long-distance narrow-band fill light system is needed for fill light.

2. The mobile vehicle positioning device convenient for outdoor use as claimed in claim 1, characterized in that: When in use, the central optical axis of the positioning camera is arranged horizontally, and the central optical axis of the positioning camera is at the same height as the geometric center point of the positioning target.

3. The mobile vehicle positioning device convenient for outdoor use as claimed in claim 2, characterized in that: When in use, the camera center optical axis of the left 3D camera is arranged parallel to the camera center optical axis of the right 3D camera.

4. The mobile large vehicle positioning device convenient for outdoor use as claimed in claim 1, characterized in that: The lighting device includes LED lamp beads.

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