On-line visual inspection system for automobile tire

Abstract

The invention discloses an on-line visual inspection system for an automobile tire, which realizes comprehensive and efficient inspection of the automobile tire through an automatic and integrated design. The system comprises a detection platform, an automobile tire rotating mechanism, a tire image acquisition mechanism and a slope. The detection platform is a core part of the whole system, and a tire driving assembly is arranged on the top surface of the detection platform and used for driving a front wheel set or a rear wheel set of a to-be-detected automobile to rotate. The tire image acquisition mechanism is arranged in the detection platform and can sequentially acquire image information of the outer side face, the inner side face and the bottom face of the tire when the tire rotates. The two slopes are connected to the two side edges of the detection platform respectively, so that the automobile can conveniently drive in and out of the detection platform. Through the comprehensive and efficient detection capability, the detection precision and accuracy are improved, the stability and safety of the system are enhanced, the detection requirements of different vehicle types are met, and the detection efficiency and the user experience are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of tire detection, and particularly to an on-line visual detection system for automobile tires. Background Art

[0002] At present, before the tires leave the factory, they will be comprehensively detected before being installed on the vehicle. For the tires after installation, during daily use and maintenance, it is also necessary to detect the tires in time to ensure the performance of the tires. Currently, for the detection of automobile tires, when the vehicle is at the maintenance network, the staff uses visual inspection or hand-held instruments to detect parameters such as the tread depth and whether there is damage of the tires. This detection method has a large labor cost and low detection efficiency. Later, some detection methods using cameras to collect tire images for visual detection and analysis also appeared. Specifically, two groups of cameras are set in the detection site and are respectively set on both sides of the vehicle. When the vehicle passes by, the cameras can be used to collect images of the outer sides of the four tires to identify parameters such as the production date, brand, and wear degree of the tires, thereby significantly improving the tire detection efficiency. However, in actual use, this detection method needs to be arranged on both sides of the passage, occupying a large area and having limitations on the actual installation site. At the same time, two sets of image acquisition devices are required, the equipment cost is high, and such devices can only detect the outer sides of the tires, and it is difficult to detect the inner sides and treads of the tires, having limitations in detection. Summary of the Invention

[0003] The purpose of the present invention is to provide an on-line visual detection system for automobile tires to solve the above problems existing in the current automobile tire detection equipment.

[0004] To achieve the above purpose, the present invention adopts the following technical solutions:

[0005] An on-line visual detection system for automobile tires includes a detection platform, an automobile tire rotation mechanism, a tire image acquisition mechanism, and slopes. The automobile tire rotation mechanism is arranged on the detection platform, and the front wheel set or the rear wheel set of the vehicle to be detected can be driven to rotate through the automobile tire rotation mechanism. The tire image acquisition mechanism is arranged in the detection platform, and the tire image acquisition mechanism is configured to sequentially collect image information of the outer sides, inner sides, and bottom surfaces of two tires of the front wheel set or the rear wheel set when the front wheel set or the rear wheel set of the vehicle rotates on the detection platform. Two slopes are provided and are respectively connected to two corresponding sides of the detection platform.

[0006] Further preferably, the automobile tire rotation mechanism includes a tire drive assembly arranged at intervals on the top surface of the detection platform, and mounting grooves are arranged at intervals on the top surface of the detection platform. The tire drive assembly is installed in the mounting grooves, and the tire drive assembly is configured to drive the corresponding tire to rotate when the front wheel group or the rear wheel group of the automobile drives onto the detection platform.

[0007] Further preferably, the tire drive assembly includes two electric rollers spaced apart in the mounting groove, wherein the axial direction of the electric roller is perpendicular to the driving direction of the automobile tire, and a moving space is provided between the two electric rollers for the tire detection mechanism to move along the length direction of the detection platform, and the space between the two electric rollers is used to support the tire and drive the tire to rotate.

[0008] Further preferably, the tire image acquisition mechanism includes a linear module, a camera mounting plate, a tire bottom camera, a tire first side camera and a tire second side camera; the linear module is arranged at the bottom of the detection platform; the camera mounting plate is connected to the linear module; the camera mounting plate can be driven to move along the length direction of the detection platform through the linear module; the tire bottom camera is arranged in the middle position of the camera mounting plate; the tire first side camera is arranged at one end of the camera mounting plate; the tire second side camera is arranged at the other end of the camera mounting plate; the tire bottom camera is used to collect the bottom image of the tire; the tire first side camera is used to collect the first side image of the tire; and the tire second side camera is used to collect the second side image of the tire.

[0009] Further preferably, a first lifting component is provided at one end of the camera mounting plate, and the first side camera of the tire is installed on the first lifting component, and the first side camera of the tire can be driven to rise and fall by the first lifting component, and a second lifting component is provided at the other end of the camera mounting plate, and the second side camera of the tire is installed on the second lifting component, and the second side camera of the tire can be driven to rise and fall by the second lifting component.

[0010] Further preferably, the first lifting member includes a first electric cylinder, the second lifting member includes a second electric cylinder, and the first electric cylinder and the second electric cylinder are both arranged in the moving space.

[0011] Further preferably, bottom light sources are provided on both sides of the tire bottom camera on the camera mounting plate, a first side light source is connected to the first side camera of the tire, and a second side light source is connected to the second side camera of the tire.

[0012] Further preferably, it also includes a tire cleaning device, which is arranged on the side of the slope corresponding to the direction of the car's entry. The tire cleaning device includes a support plate and a carpet, and the carpet is arranged on the support plate. When the tire passes through the carpet, the debris on the tire adheres to the carpet.

[0013] Further preferably, the top surface of the slope is provided with a grid anti-skid blanket, and a brush for dust removal is provided on the grid anti-skid blanket.

[0014] Beneficial effects of the present invention:

[0015] The present invention's online visual inspection system for automobile tires, through its automated and integrated design, enables comprehensive and efficient inspection of automobile tires. The tire image acquisition mechanism sequentially captures image information of the outer, inner, and bottom surfaces of all four tires as they rotate, ensuring that image data from every tire part is captured without omission. The system requires only one inspection platform and two sets of ramps, resulting in a smaller footprint. Compared to traditional inspection methods that use two sets of cameras on either side of the vehicle, the present invention is more flexible in adapting to different installation locations. Furthermore, it utilizes only one linear module and one set of cameras for multi-view image acquisition, significantly reducing equipment costs compared to traditional two-set image acquisition equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of the automobile tire online visual inspection system of the present invention when inspecting the front wheel group;

[0017] Figure 2 This is a schematic structural diagram of the automobile tire online visual inspection system of the present invention when inspecting a rear wheel group;

[0018] Figure 3 This is a schematic structural diagram of the on-line visual inspection system for automobile tires of the present invention when it is ready for inspection;

[0019] Figure 4 It is a structural schematic diagram of the online visual inspection system for automobile tires of the present invention;

[0020] Figure 5 It is a structural schematic diagram (stereoscopic diagram) of the detection platform in the online visual detection system for automobile tires of the present invention;

[0021] Figure 6 It is a structural schematic diagram (exploded view) of the detection platform in the online visual detection system for automobile tires of the present invention;

[0022] Figure 7 It is a top view of the detection platform in the online visual inspection system for automobile tires of the present invention;

[0023] Figure 8It is a structural schematic diagram of a tire image acquisition mechanism in an online visual inspection system for automobile tires of the present invention;

[0024] Figure 9 It is a structural schematic diagram of a tire bottom camera, a tire first side camera, and a tire second side camera in an online visual inspection system for automobile tires of the present invention.

[0025] The names corresponding to the marks in the figure are:

[0026] Detection platform 1, mounting slot 11;

[0027] Automobile tire rotation mechanism 2, tire drive assembly 21, electric roller 211, moving space 212;

[0028] Tire image acquisition mechanism 3, linear module 31, camera mounting plate 32, bottom light source 321, first side light source 322, second side light source 323, tire bottom camera 33, tire first side camera 34, tire second side camera 35, first lifting member 36, second lifting member 37, first electric cylinder, second electric cylinder, ramp 4, grid anti-slip mat 41,

[0029] Tire cleaning device 5 , support plate 51 , carpet 52 . DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention are within the scope of protection of the present invention.

[0031] like Figures 1-9 As shown, the online visual inspection system for automobile tires includes an inspection platform 1, a tire rotation mechanism 2, a tire image acquisition mechanism 3, and a ramp 4. Inspection platform 1 is the core of the entire system. Its top surface is equipped with a tire drive assembly 21, which is used to drive the front or rear wheel assembly of the vehicle to be inspected. The tire image acquisition mechanism 3 is located within inspection platform 1 and can move along the length of inspection platform 1 as the tire rotates, sequentially capturing image information of the tire's outer side, inner side, and bottom surface. Two ramps 4 are provided, connected to either side of inspection platform 1 to facilitate vehicles entering and exiting inspection platform 1.

[0032] Figure 4-Figure 6As shown, the detection platform 1 is welded from high-strength steel and its surface is treated with anti-slip to ensure the stability and safety of the vehicle tires during the detection process. Moreover, height-adjustable support legs are welded to the bottom surface of the detection platform, and the support legs are equipped with leveling bolts to allow the platform to adjust its levelness. The length and width of the detection platform 1 are designed according to the wheelbase and track width of the vehicle to be detected to meet the detection requirements of different vehicle models. Two mounting grooves 11 are provided on the top surface of the detection platform 1 for mounting the tire drive assemblies 21. The mounting grooves 11 are arranged at intervals along the length direction of the detection platform 1 to ensure that the tire drive assemblies 21 can evenly support and drive the rotation of the tires.

[0033] Figure 5 and Figure 6 As shown, the vehicle tire rotation mechanism 2 includes a plurality of tire drive assemblies 21, and each tire drive assembly 21 is installed in the mounting groove 11 on the top surface of the detection platform 1. The tire drive assembly 21 includes two electric rollers 211 arranged at intervals in the mounting groove 11. The axial direction of the electric rollers 211 is perpendicular to the traveling direction of the vehicle tire to ensure that the tire is not affected by lateral forces during rotation. A moving space 212 is provided between the two electric rollers 211 for supporting and driving the rotation of the tire. The width of the moving space 212 is designed according to the width of the tire to ensure that the tire does not interfere with the electric rollers 211 during rotation. In this embodiment, the surface of the roller is coated with a polyurethane friction layer. The specific structure and principle of the electric roller belong to the prior art and will not be elaborated here.

[0034] Figure 6-Figure 9 As shown, the tire image acquisition mechanism 3 includes a linear module 31, a camera mounting plate 32, a tire bottom camera 33, a tire first side camera 34, and a tire second side camera 35. The linear module 31 is arranged at the bottom of the detection platform 1 for driving the camera mounting plate 32 to move along the length direction of the detection platform 1. The camera mounting plate 32 is connected to the linear module 31 and its length matches the length of the detection platform 1. The tire bottom camera 33 is arranged at the middle position of the camera mounting plate 32 for acquiring the bottom image of the tire. The tire first side camera 34 is arranged at one end of the camera mounting plate 32 for acquiring the first side image of the tire. The tire second side camera 35 is arranged at the other end of the camera mounting plate 32 for acquiring the second side image of the tire.

[0035] As Figure 9As shown in the figure, one end of the camera mounting plate 32 is provided with a first lifting member 36, and the first side camera 34 of the tire is mounted on the first lifting member 36. The first lifting member 36 is a first electric cylinder, which is used to drive the first side camera 34 of the tire to lift. The other end of the camera mounting plate 32 is provided with a second lifting member 37, and the second side camera 35 of the tire is mounted on the second lifting member 37. The second lifting member 37 is a second electric cylinder, which is used to drive the second side camera 35 of the tire to lift. Both the first electric cylinder and the second electric cylinder are arranged in the moving space 212, so as to ensure that during detection, they can move between two front wheels or two rear wheels, avoiding interference from the electric rollers, so that the first side camera 34 of the tire and the second side camera 35 of the tire can accurately collect the outer side and inner side images of the tire.

[0036] The bottom camera 33 of the tire, the first side camera 34 of the tire and the second side camera 35 of the tire all adopt high-resolution industrial cameras to ensure that the collected image information has sufficient clarity and accuracy. On both sides of the bottom camera 33 of the tire on the camera mounting plate 32, there are bottom light sources 321, which are used to provide uniform lighting conditions for the bottom camera 33 of the tire. A first side light source 322 is connected to the first side camera 34 of the tire, which is used to provide uniform lighting conditions for the first side camera 34 of the tire. A second side light source 323 is connected to the second side camera 35 of the tire, which is used to provide uniform lighting conditions for the second side camera 35 of the tire.

[0037] The ramp 4 is welded by high-strength steel, and a grid anti-slip blanket 41 is provided on the surface to increase the friction between the tire and the ramp 4 and prevent the tire from slipping when driving into and out of the detection platform 1. There are brushes on the grid anti-slip blanket 41, which are used to remove debris and dust on the tire surface to ensure that the tire remains clean during the detection process.

[0038] In this embodiment, a tire cleaning device 5 is also provided, as Figure 4 shown. The tire cleaning device 5 is arranged on one side of the ramp 4 corresponding to the driving direction of the vehicle. The tire cleaning device 5 includes a support plate 51 and a carpet 52, and the carpet 52 is arranged on the support plate 51. The support plate 51 is made of fiberglass material, and drainage grooves are opened on the surface. The carpet 52 is a 3M company SCS2000 type dust sticking blanket, which is detachably fixed on the support plate by magic tape. When the vehicle passes through at a speed of ≤5 km / h, impurities such as sand and soil on the tire surface are captured by the carpet fiber layer, further ensuring that the tire remains clean during the detection process.

[0039] The working process of the on-line visual inspection system for automobile tires of the present invention is as follows:

[0040] First, the vehicle drives into the detection platform 1 along the slope 4. During the driving-in process, the tire cleaning device 5 cleans the surface of the front-wheel tires, removing debris and dust on the tire surface. Then, after the front wheels drive onto the detection platform, shift into neutral, and the electric roller 211 in the tire drive assembly 21 starts to work, driving the tires to rotate slowly. During the tire rotation, the tire bottom camera 33, the first tire side camera 34, and the second tire side camera 35 respectively collect images of the bottom, outer side, and inner side of the front-wheel tires. The outer side camera, driven by the electric cylinder, takes a picture every 50 mm of ascent to obtain an image of the outer vertical surface of the tire. The inner side camera 3 performs synchronous lifting and shooting, focusing on capturing information on the inner side of the wheel hub. The collected image information is transmitted to the image processing system through a data transmission line for subsequent analysis and processing. Then, the electric cylinder resets, and the linear module drives the tire bottom camera 33, the first tire side camera 34, and the second tire side camera 35 to move, repeating the above detection for the other tire of the front wheels. The collected image information is transmitted to the image processing system through a data transmission line for subsequent analysis and processing.

[0041] Subsequently, after the rear wheels drive onto the detection platform, shift into neutral, and the electric roller 211 in the tire drive assembly 21 starts to work, driving the tires to rotate slowly. During the tire rotation, the tire bottom camera 33, the first tire side camera 34, and the second tire side camera 35 respectively collect images of the bottom, outer side, and inner side of the rear-wheel tires. The outer side camera, driven by the electric cylinder, takes a picture every 50 mm of ascent to obtain an image of the outer vertical surface of the tire. The inner side camera 3 performs synchronous lifting and shooting, focusing on capturing information on the inner side of the tire. The collected image information is transmitted to the image processing system through a data transmission line for subsequent analysis and processing. Then, the electric cylinder resets, and the linear module drives the tire bottom camera 33, the first tire side camera 34, and the second tire side camera 35 to move, repeating the above detection for the other tire of the rear wheels. The collected image information is transmitted to the image processing system through a data transmission line for subsequent analysis and processing. Finally, the vehicle drives out of the detection platform 1 along the slope 4 on the other side, completing the entire detection process.

[0042] During the image collection process, the working sequence and positional relationship of the tire bottom camera 33, the first tire side camera 34, and the second tire side camera 35 are as follows:

[0043] When the front or rear wheel set of the vehicle travels onto the detection platform 1, the tire drive assembly 21 drives the corresponding tire to rotate. The bottom surface camera 33 of the tire captures the bottom surface image of the tire. Since the bottom surface camera 33 of the tire is disposed at the middle position of the camera mounting plate 32, during the rotation of the tire, the bottom surface camera 33 of the tire can accurately capture each part of the bottom surface of the tire. The first side camera 34 of the tire and the second side camera 35 of the tire respectively capture the outer side surface and the inner side surface images of the tire. Since the first side camera 34 of the tire and the second side camera 35 of the tire are respectively disposed at both ends of the camera mounting plate 32, during the rotation of the tire, the first side camera 34 of the tire and the second side camera 35 of the tire can respectively capture each part of the outer side surface of the tire and each part of the inner side surface of the tire.

[0044] During the image acquisition process, the working states of the first lifting member 36 and the second lifting member 37 are as follows:

[0045] When the first side camera 34 of the tire captures the outer side surface image of the tire, the first lifting member 36 drives the first side camera 34 of the tire to rise to the working position. When the second side camera 35 of the tire captures the inner side surface image of the tire, the second lifting member 37 drives the second side camera 35 of the tire to rise to the working position.

[0046] During the image acquisition process, the working states of the bottom surface light source 321, the first side light source 322, and the second side light source 323 are as follows:

[0047] When the bottom surface camera 33 of the tire captures the bottom surface image of the tire, the bottom surface light source 321 provides uniform illumination conditions for the bottom surface camera 33 of the tire. When the first side camera 34 of the tire captures the outer side surface image of the tire, the first side light source 322 provides uniform illumination conditions for the first side camera 34 of the tire. When the second side camera 35 of the tire captures the inner side surface image of the tire, the second side light source 323 provides uniform illumination conditions for the second side camera 35 of the tire. By reasonably setting the positions and illumination intensities of the light sources, it is ensured that the acquired image information has sufficient clarity and accuracy.

[0048] The on-line visual inspection system for vehicle tires of the present invention has the following advantages:

[0049] 1. Comprehensive inspection: The system can simultaneously capture the image information of the outer side surface, the inner side surface, and the bottom surface of the tire, realizing comprehensive inspection of the tire. Compared with traditional inspection methods, the present invention can more accurately identify parameters such as the production date, brand, and wear degree of the tire.

[0050] 2. Efficient inspection: The system adopts an automated and integrated design, which can significantly improve the inspection efficiency. Compared with manual inspection or inspection with hand-held instruments, the present invention can greatly reduce the labor cost and time cost.

[0051] 3. Space-saving: The system requires only one detection platform and two sets of ramps, occupying a small area. Compared with the traditional detection method of two sets of cameras set on both sides of the car, this invention can more flexibly adapt to different installation locations.

[0052] 4. Reduce costs: The system uses a linear module and a set of cameras to achieve multi-view image acquisition. Compared with the traditional two sets of image acquisition equipment, the present invention can significantly reduce equipment costs.

[0053] The present invention's online visual tire inspection system achieves comprehensive and efficient tire inspection through an automated and integrated design. The system offers advantages such as comprehensive and efficient inspection, space savings, cost reduction, ease of maintenance, improved safety, strong adaptability, accurate data, simple operation, environmental protection and energy conservation, high reliability, strong compatibility, easy upgrades, and wide application.

Claims

1. An on-line visual inspection system for automobile tires, characterized in that: It includes a detection platform, an automobile tire rotation mechanism, a tire image acquisition mechanism and a ramp. The automobile tire rotation mechanism is arranged on the detection platform. Through the automobile tire rotation mechanism, the front wheel set or the rear wheel set of the automobile to be detected can be driven to rotate. The tire image acquisition mechanism is arranged in the detection platform. The tire image acquisition mechanism is configured to collect the image information of the outer side, inner side and bottom surface of two tires of the front wheel set or the rear wheel set in sequence along the length direction of the detection platform when the front wheel set or the rear wheel set of the automobile rotates on the detection platform. There are two ramps, which are respectively connected to the two corresponding side edges of the detection platform.

2. The on-line visual inspection system for automobile tires according to claim 1, characterized in that: The automobile tire rotation mechanism includes tire drive assemblies arranged at intervals on the top surface of the detection platform. Installation grooves are arranged at intervals on the top surface of the detection platform. The tire drive assemblies are installed in the installation grooves. The tire drive assemblies are configured to drive the corresponding tires to rotate when the front wheel set or the rear wheel set of the automobile travels onto the detection platform.

3. The on-line visual inspection system for automobile tires according to claim 2, wherein: The tire drive assemblies include two electric rollers arranged at intervals in the installation grooves. Among them, the axial direction of the electric roller is perpendicular to the traveling direction of the automobile tire. A moving space for the tire detection mechanism to move along the length direction of the detection platform is provided between the two electric rollers. Between the two electric rollers is used to support the tire and drive the tire to rotate.

4. The on-line visual inspection system for automobile tires according to claim 3, characterized in that: The tire image acquisition mechanism includes a linear module, a camera mounting plate, a tire bottom camera, a tire first side camera and a tire second side camera. The linear module is arranged at the bottom of the detection platform. The camera mounting plate is connected to the linear module. Through the linear module, the camera mounting plate can be driven to move along the length direction of the detection platform. The tire bottom camera is arranged at the middle position of the camera mounting plate. The tire first side camera is arranged at one end of the camera mounting plate. The tire second side camera is arranged at the other end of the camera mounting plate. The tire bottom camera is used to collect the bottom image of the tire. The tire first side camera is used to collect the first side image of the tire. The tire second side camera is used to collect the second side image of the tire.

5. The on-line visual inspection system for automobile tires according to claim 4, characterized in that: A first lifting member is arranged at one end of the camera mounting plate. The tire first side camera is mounted on the first lifting member. Through the first lifting member, the tire first side camera can be driven to lift. A second lifting member is arranged at the other end of the camera mounting plate. The tire second side camera is mounted on the second lifting member. Through the second lifting member, the tire second side camera can be driven to lift.

6. The on-line visual inspection system for automobile tires according to claim 5, characterized in that: The first lifting member includes a first electric cylinder. The second lifting member includes a second electric cylinder. The first electric cylinder and the second electric cylinder are both arranged in the moving space.

7. The on-line visual inspection system for automobile tires according to claim 4, characterized in that: Bottom surface light sources are arranged on both sides of the tire bottom camera on the camera mounting plate. A first side light source is connected to the tire first side camera. A second side light source is connected to the tire second side camera.

8. The on-line visual inspection system for automobile tires according to claim 1, wherein: It further includes a tire cleaning device, which is arranged on one side of the slope corresponding to the driving direction of the vehicle. The tire cleaning device includes a support plate and a carpet. The carpet is arranged on the support plate. When the tire passes through the carpet, the sundries on the tire adhere to the carpet.

9. The on-line visual inspection system for automobile tires according to claim 8, characterized in that: A grid anti-slip blanket is arranged on the top surface of the slope, and a brush for removing dust is arranged on the grid anti-slip blanket.

Images