Method, device and equipment for marking coating appearance defects and storage medium
By using pre-set laser dot matrix projection to indicate defects, the problem of secondary inspection in the grinding process during coating appearance defect detection is solved, enabling accurate positioning and direct grinding, and improving the operator's work efficiency and accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- DONGFENG MOTOR GRP
- Filing Date
- 2024-08-15
- Publication Date
- 2026-05-12
AI Technical Summary
In existing technologies, after detecting coating appearance defects, the grinding process operator needs to perform a second check to read the exact location of the problem, and needs to be familiar with the program position numbering, which makes it easy to miss or misread.
Based on the defect type and size, a pre-set laser dot matrix is used to mark the defect at its coordinates. A red-green bidirectional laser head projects a light pattern, and combined with a pre-set classification table and the calculation of the beam angle, the defect is accurately located and marked.
Grinding is performed directly through defect markings, avoiding the risk of missed or incorrect readings and improving the efficiency and accuracy of the grinding process.
Smart Images
Figure CN119000690B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of defect identification, specifically to a method, apparatus, device, and computer-readable storage medium for marking coating appearance defects. Background Technology
[0002] During the spraying of coatings, environmental impurities (such as dust, lint, oil droplets, etc.) often cause the surface to be uneven, resulting in defects such as particles and pinholes. These defects are uniformly detected and polished during the finishing process.
[0003] Currently, the common inspection method uses zebra lamp light sources to assist manual visual inspection. The main function of the paint defect inspection station is to check and mark problem points and types to assist subsequent sanding and polishing operations. Its main functions are: identifying defect types and marking defect locations. The method is to divide the car body into several blocks and number them, and display the inspection status of these blocks on the electronic screen of the subsequent station. The automatic inspection station completes the statistics of defect types and quantities for each corresponding numbered block and outputs them to the electronic screen. The subsequent station reads the location number and defect type quantity on the screen and processes the corresponding location. After the station's work is completed, the defect status of the next car body is displayed. This means that the sanding operator needs to check the numbered area a second time to read the accurate location of the problem, and the sanding operator needs to be familiar with the numbering of the program positions, otherwise it is easy to miss or misread. Summary of the Invention
[0004] This application provides a method, apparatus, device, and computer-readable storage medium for marking coating appearance defects. It can solve the technical problems in the prior art that require the operator of the grinding process to check twice in the numbered area to read the exact location of the problem, and the operator of the grinding process needs to be familiar with the numbering of the program position, otherwise it is easy to miss or misread.
[0005] In a first aspect, embodiments of this application provide a method for marking coating appearance defects, the method comprising:
[0006] Obtain defect information for each defect in the vehicle to be inspected, wherein the defect information includes defect type, defect size, and defect coordinates;
[0007] Based on the preset laser light dot matrix, each defect is marked at the defect coordinates according to the defect type and defect size, wherein the defect marking is a light pattern.
[0008] In conjunction with the first aspect, in one embodiment, the step of marking each defect at the defect coordinates based on the defect type and defect size using a preset laser dot matrix includes:
[0009] Based on the defect type and defect size, determine the light pattern to be marked for each defect;
[0010] Based on the diameter of the preset grinding head, determine the beam angle of the corresponding red-green bidirectional laser head in the preset laser light matrix;
[0011] Based on the preset laser dot matrix and the defect coordinates, the red-green bidirectional laser head is controlled to project the light pattern onto each defect at the defect coordinates according to the beam angle, so as to mark the defect.
[0012] In conjunction with the first aspect, in one embodiment, determining the light pattern to be marked for each of the defects based on the defect type and defect size includes:
[0013] Based on the first preset classification table, the defect type, and the defect size, the category to which each defect belongs is determined;
[0014] Based on the first preset classification table and the category to which each defect belongs, the light pattern corresponding to the category to which each defect belongs is determined.
[0015] In conjunction with the first aspect, in one embodiment, determining the beam angle of the corresponding red-green bidirectional laser head in the preset laser light array based on the obtained diameter of the preset grinding head includes:
[0016] The minimum distance at which the preset laser dot matrix is mapped onto the vehicle body surface, the lamp head exit radius of the red-green bidirectional laser head, and the diameter of the preset grinding head are obtained.
[0017] The minimum distance when the preset laser lamp array is mapped onto the vehicle surface, the lamp head exit radius of the red-green bidirectional laser lamp head, and the diameter of the preset grinding head are calculated based on the preset beam angle formula to determine the beam angle of the corresponding red-green bidirectional laser lamp head in the preset laser lamp array that satisfies the preset beam angle formula.
[0018] In conjunction with the first aspect, in one embodiment, before marking each of the defects at the defect coordinates, the method further includes:
[0019] Receive lighting control commands and obtain quantity information carried by the control commands;
[0020] The number of red and green bidirectional laser heads in the preset laser light matrix is controlled by the quantity information in the light control command.
[0021] In conjunction with the first aspect, in one implementation, after acquiring the defect information of each defect in the vehicle to be inspected, the method further includes:
[0022] If the defect coordinates of each defect are determined to be three-dimensional coordinates, then the three-dimensional coordinates of each defect are deconstructed and converted into two-dimensional coordinates.
[0023] In conjunction with the first aspect, in one embodiment, the preset laser light matrix includes a four-way motor controller, a universal joint motor controller, a micro motor, multiple red-green bidirectional laser light heads, a light head filter wheel with rotating lenses, a filter, a universal joint, and an electronic control unit (ECU).
[0024] Secondly, embodiments of this application provide a marking device for coating appearance defects, the marking device for coating appearance defects comprising:
[0025] The acquisition module is used to acquire defect information of each defect in the vehicle to be inspected, wherein the defect information includes defect type, defect size and defect coordinates;
[0026] The marking module is used to mark each defect at the defect coordinates based on the defect type and defect size according to a preset laser light dot matrix, wherein the defect marking is a light pattern.
[0027] Thirdly, embodiments of this application provide a marking device for coating appearance defects. The marking device for coating appearance defects includes a processor, a memory, and a marking program for coating appearance defects stored in the memory and executable by the processor. When the marking program for coating appearance defects is executed by the processor, it implements the steps of the marking method for coating appearance defects as described above.
[0028] Fourthly, embodiments of this application provide a computer-readable storage medium storing a marking program for coating appearance defects, wherein when the marking program for coating appearance defects is executed by a processor, it implements the steps of the marking method for coating appearance defects as described above.
[0029] The beneficial effects of the technical solutions provided in this application include:
[0030] By acquiring defect information of various defects in the vehicle to be inspected, including defect type, defect size, and defect coordinates, and marking each defect at its coordinates based on a preset laser dot matrix according to the defect type and size, wherein the defect marking is a light-off pattern, this solves the technical problem in related technologies where the operator in the grinding process needs to perform a secondary inspection within the numbered area to read the accurate location of the problem, and the operator in the grinding process needs to be familiar with the numbering of program positions, otherwise it is easy to miss or misread. This allows the operator in the grinding process to directly grind the defects through the defect markings, avoiding the risk of missing or misreading. Attached Figure Description
[0031] Figure 1 This is a schematic flowchart of an embodiment of the method for marking coating appearance defects according to this application;
[0032] Figure 2 This is a schematic diagram of the functional modules of an embodiment of the marking device for indicating coating appearance defects in this application.
[0033] Figure 3 This is a schematic diagram of the hardware structure of the marking device for coating appearance defects involved in the embodiments of this application. Detailed Implementation
[0034] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.
[0035] First, some of the technical terms used in this application will be explained to help those skilled in the art understand this application.
[0036] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.
[0037] In a first aspect, embodiments of this application provide a method for marking coating appearance defects.
[0038] In one embodiment, reference is made to Figure 1 , Figure 1 This is a flowchart illustrating the first embodiment of the method for marking coating appearance defects according to this application. Figure 1 As shown, the methods for indicating coating appearance defects include:
[0039] Step S10: Obtain defect information for each defect in the vehicle to be inspected, wherein the defect information includes defect type, defect size, and defect coordinates;
[0040] As an example, defect information is obtained for each defect in the vehicle to be inspected. This defect information includes defect type, defect size, and defect coordinates. Defect types include particles, pinholes, fibers, paint coatings, particle clusters, pinhole clusters, paint coating clusters, loss of gloss, clear coat runs, pits, craters, shrinkage cavities, paint thickening, runs, and exceeding limits for Class II defects. Defect coordinates include three-dimensional or two-dimensional coordinates.
[0041] Specifically, after obtaining the defect information of each defect in the vehicle to be inspected, the method further includes: if the defect coordinates of each defect are determined to be three-dimensional coordinates, then the three-dimensional coordinates of each defect are deconstructed and converted into two-dimensional coordinates.
[0042] As an example, if the defect coordinates of each defect are determined to be three-dimensional coordinates, then the three-dimensional coordinates of each defect are structured to convert them into two-dimensional coordinates. For example, for the horizontal surfaces of the hood, roof, tailgate plane, and upper sloping surface of the door waistline, the (x, z) coordinates are read; for the vertical surfaces of the left and right door facades and the left and right half of the tailgate facades, the (x, y) coordinates are taken.
[0043] Step S20: Based on the preset laser light dot matrix, mark each defect at the defect coordinates according to the defect type and defect size, wherein the defect mark is a light pattern.
[0044] As an example, the preset laser dot matrix selects the corresponding light pattern according to the defect type and size of each defect, and marks each defect at the defect coordinates.
[0045] Specifically, the step of marking each defect at the defect coordinates based on the preset laser light dot matrix according to the defect type and defect size includes: determining the light pattern to be marked for each defect according to the defect type and defect size; determining the beam angle of the corresponding red-green bidirectional laser head in the preset laser light dot matrix according to the diameter of the preset grinding head; and controlling the red-green bidirectional laser head to project the light pattern onto each defect at the defect coordinates according to the beam angle, based on the preset laser light dot matrix and the defect coordinates, so as to mark the defect.
[0046] As an example, by querying a first preset classification table, the category to which the defect type and defect size belong for each defect in the first preset classification table are determined. The light pattern corresponding to the category to which each defect belongs in the first preset classification table is also determined by querying the first preset classification table. The first preset classification table is shown below:
[0047]
[0048]
[0049] Alternatively, as shown below, the first preset classification table:
[0050]
[0051]
[0052] Alternatively, as shown below, the first preset classification table:
[0053]
[0054]
[0055] The minimum distance when the preset laser lamp array is mapped onto the vehicle surface, the lamp head exit radius of the red-green bidirectional laser lamp head, and the diameter of the preset grinding head are obtained. Based on the preset beam angle formula, the beam angle of the corresponding red-green bidirectional laser lamp head in the preset laser lamp array that satisfies the preset beam angle formula is calculated. For example, by obtaining the minimum distance L when the preset laser lamp array is mapped onto the vehicle surface, the lamp head exit radius S of the red-green bidirectional laser lamp head, and the diameter R of the preset grinding head, the beam angle α of the corresponding red-green bidirectional laser lamp head in the preset laser lamp array that satisfies the preset beam angle formula R>2S+2L·tan(0.5α) is obtained.
[0056] Based on a preset laser dot matrix and the defect coordinates, the red-green bidirectional laser head is controlled to project corresponding light patterns onto each defect at the defect coordinates according to the beam angle, thus marking the defect. The preset laser dot matrix includes a four-way motor controller, a universal joint motor controller, a micro motor, multiple red-green bidirectional laser heads, a lamp head filter wheel with rotating lenses, filters, a universal joint, and an electronic control unit (ECU). The ECU receives defect information, generates projection coordinates based on the defect coordinates in the defect information, and decomposes the projection coordinates into bottom rotation coordinates (angle r), which is sent to the four-way motor controller. The planar coordinates (xy) or (xz) are sent to the universal joint motor controller. The ECU selects the projection filter shape according to the defect type and size, sends it to the micro motor, and sends color information to the red-to-green bidirectional laser head. The red-green bidirectional laser head, the lamp head filter wheel with rotating lenses, and the filters complete the projection marking.
[0057] In this embodiment, defect information of each defect in the vehicle to be inspected is obtained, including defect type, defect size, and defect coordinates. Based on a preset laser dot matrix, each defect is marked at its coordinates according to the defect type and size. The defect marking is a light-off pattern. This solves the technical problem in related technologies where the operator in the grinding process needs to check twice within the numbered area to read the accurate location of the problem, and the operator in the grinding process needs to be familiar with the numbering of program positions, otherwise it is easy to miss or misread. This allows the operator in the grinding process to directly grind the defects through the defect markings, avoiding the risk of missing or misreading.
[0058] Furthermore, in one embodiment, before marking each defect at the defect coordinates, the method further includes: receiving a light control command, obtaining quantity information carried by the control command, and controlling the number of red-green bidirectional laser lamp heads turned on in the preset laser lamp matrix using the quantity information in the light control command.
[0059] As an example, defect information is obtained for each defect in the vehicle to be inspected. This defect information includes defect type, defect size, and defect coordinates. Defect types include particles, pinholes, fibers, paint coatings, particle clusters, pinhole clusters, paint coating clusters, loss of gloss, clear coat runs, pits, craters, shrinkage cavities, paint thickening, runs, and exceeding limits for Class II defects. Defect coordinates include three-dimensional or two-dimensional coordinates.
[0060] The preset laser light matrix selects corresponding light patterns based on the defect type and size of each defect. For example, by querying a first preset classification table, the category to which each defect type and size belongs is determined. The light pattern corresponding to the category of each defect in the first preset classification table is then determined. A light control command is received, and the quantity information carried in the command is obtained. Based on the quantity information in the light control command, the number of red-green bidirectional laser heads in the preset laser light matrix that are turned on is controlled. Based on the defect coordinates according to the preset laser light matrix, a certain number of red-green bidirectional laser heads are controlled at the defect coordinates to project the corresponding light pattern onto each defect according to the beam angle, thus marking the defect.
[0061] In this embodiment, defect information of each defect in the vehicle to be inspected is obtained, including defect type, defect size, and defect coordinates. Based on a preset laser light dot matrix, according to the defect type and defect size, a certain number of red and green bidirectional laser lights are controlled at the defect coordinates to project corresponding light patterns onto each defect according to the beam angle, so as to mark the defect. In order to avoid excessive use of red and green bidirectional laser lights, which would be wasteful.
[0062] Secondly, embodiments of this application also provide a marking device for coating appearance defects.
[0063] In one embodiment, reference is made to Figure 2 , Figure 2 This is a functional module schematic diagram of an embodiment of the marking device for indicating coating appearance defects according to this application. Figure 2 As shown, the marking device for coating appearance defects includes:
[0064] The acquisition module 10 is used to acquire defect information of each defect in the vehicle to be inspected, wherein the defect information includes defect type, defect size and defect coordinates;
[0065] The marking module 20 is used to mark each defect at the defect coordinates based on the defect type and defect size according to a preset laser light dot matrix, wherein the defect marking is a light pattern.
[0066] Furthermore, in one embodiment, the identification module 20 is used for:
[0067] Based on the defect type and defect size, determine the light pattern to be marked for each defect;
[0068] Based on the diameter of the preset grinding head, determine the beam angle of the corresponding red-green bidirectional laser head in the preset laser light matrix;
[0069] Based on the preset laser dot matrix and the defect coordinates, the red-green bidirectional laser head is controlled to project the light pattern onto each defect at the defect coordinates according to the beam angle, so as to mark the defect.
[0070] Furthermore, in one embodiment, the marking device for coating appearance defects further includes a new module for:
[0071] Based on the first preset classification table, the defect type, and the defect size, the category to which each defect belongs is determined;
[0072] Based on the first preset classification table and the category to which each defect belongs, the light pattern corresponding to the category to which each defect belongs is determined.
[0073] Furthermore, in one embodiment, the marking device for coating appearance defects further includes a new module for...
[0074] The minimum distance at which the preset laser dot matrix is mapped onto the vehicle body surface, the lamp head exit radius of the red-green bidirectional laser head, and the diameter of the preset grinding head are obtained.
[0075] The minimum distance when the preset laser lamp array is mapped onto the vehicle surface, the lamp head exit radius of the red-green bidirectional laser lamp head, and the diameter of the preset grinding head are calculated based on the preset beam angle formula to determine the beam angle of the corresponding red-green bidirectional laser lamp head in the preset laser lamp array that satisfies the preset beam angle formula.
[0076] Furthermore, in one embodiment, the marking device for coating appearance defects further includes a new module for receiving light control commands and obtaining quantity information carried by the control commands;
[0077] The number of red and green bidirectional laser heads in the preset laser light matrix is controlled by the quantity information in the light control command.
[0078] Furthermore, in one embodiment, the marking device for coating appearance defects further includes a new module for...
[0079] If the defect coordinates of each defect are determined to be three-dimensional coordinates, then the three-dimensional coordinates of each defect are deconstructed and converted into two-dimensional coordinates.
[0080] Furthermore, in one embodiment, the marking device for coating appearance defects also includes a new module for: the preset laser lamp dot matrix includes a four-way motor controller, a universal joint motor controller, a micro motor, multiple red and green bidirectional laser lamp heads, a lamp head filter wheel with rotating lenses, a filter, a universal joint, and an electronic control unit (ECU).
[0081] The functions of each module in the above-mentioned coating appearance defect marking device correspond to the steps in the above-mentioned coating appearance defect marking method embodiment, and their functions and implementation processes will not be described in detail here.
[0082] Thirdly, embodiments of this application provide a marking device for coating appearance defects. The marking device for coating appearance defects can be a personal computer (PC), a laptop computer, a server, or other device with data processing capabilities.
[0083] Reference Figure 3 , Figure 3 This is a schematic diagram of the hardware structure of a coating appearance defect marking device involved in an embodiment of this application. In this embodiment, the coating appearance defect marking device may include a processor, a memory, a communication interface, and a communication bus.
[0084] The communication bus can be of any type and is used to interconnect the processor, memory, and communication interface.
[0085] The communication interface includes input / output (I / O) interfaces, physical interfaces, and logical interfaces used for interconnecting internal components of the marking device for coating appearance defects, as well as interfaces used for interconnecting the marking device for coating appearance defects with other devices (such as other computing devices or user equipment). Physical interfaces can be Ethernet interfaces, fiber optic interfaces, ATM interfaces, etc.; user equipment can be displays, keyboards, etc.
[0086] Memory can be various types of storage media, such as random access memory (RAM), read-only memory (ROM), non-volatile RAM (NVRAM), flash memory, optical storage, hard disk, programmable ROM (PROM), erasable PROM (EPROM), electrically erasable PROM (EEPROM), etc.
[0087] The processor can be a general-purpose processor, which can call a marking program for coating appearance defects stored in memory and execute the marking method for coating appearance defects provided in the embodiments of this application. For example, the general-purpose processor can be a central processing unit (CPU). The method executed when the marking program for coating appearance defects is called can refer to the various embodiments of the marking method for coating appearance defects in this application, and will not be repeated here.
[0088] Those skilled in the art will understand that Figure 3 The hardware structure shown does not constitute a limitation of this application and may include more or fewer components than shown, or combine certain components, or have different component arrangements.
[0089] Fourthly, embodiments of this application also provide a computer-readable storage medium.
[0090] The present application has a computer-readable storage medium storing a marking program for coating appearance defects, wherein when the marking program for coating appearance defects is executed by a processor, the steps of the marking method for coating appearance defects as described above are implemented.
[0091] The method implemented when the procedure for marking coating appearance defects is executed can be referred to in various embodiments of the method for marking coating appearance defects in this application, and will not be repeated here.
[0092] It should be noted that the sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.
[0093] The terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to such process, method, product, or apparatus. The terms "first," "second," and "third," etc., are used to distinguish different objects, etc., and do not indicate a sequence, nor do they limit "first," "second," and "third" to different types.
[0094] In the description of the embodiments of this application, terms such as "exemplary," "for example," or "for instance" are used to indicate examples, illustrations, or explanations. Any embodiment or design described as "exemplary," "for example," or "for instance" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplary," "for example," or "for instance" is intended to present the relevant concepts in a concrete manner.
[0095] In the description of the embodiments of this application, unless otherwise stated, " / " means "or". For example, A / B can mean A or B. The "and / or" in the text is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of this application, "multiple" means two or more.
[0096] In some processes described in the embodiments of this application, multiple operations or steps are included in a specific order. However, it should be understood that these operations or steps may not be executed in the order they appear in the embodiments of this application, or they may be executed in parallel. The sequence number of the operation is only used to distinguish different operations, and the sequence number itself does not represent any execution order. In addition, these processes may include more or fewer operations, and these operations or steps may be executed sequentially or in parallel, and these operations or steps may be combined.
[0097] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes several instructions to cause a terminal device to execute the methods described in the various embodiments of this application.
[0098] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.
Claims
1. A method for indicating coating appearance defects, characterized in that, The method for indicating coating appearance defects includes: Obtain defect information for each defect in the vehicle to be inspected, wherein the defect information includes defect type, defect size, and defect coordinates; Based on the preset laser light dot matrix, according to the defect type and defect size, each defect is marked at the defect coordinates, wherein the defect mark is a light switch pattern; The step of marking each defect at the defect coordinates based on the preset laser light dot matrix according to the defect type and defect size includes: Based on the defect type and defect size, determine the light pattern to be marked for each defect; Based on the diameter of the preset grinding head, determine the beam angle of the corresponding red-green bidirectional laser head in the preset laser light matrix; Based on the preset laser dot matrix and the defect coordinates, the red-green bidirectional laser head is controlled to project the light pattern onto each defect at the defect coordinates according to the beam angle, so as to mark the defect; The minimum distance when the preset laser light dot matrix is mapped onto the vehicle surface, the lamp head exit radius of the red and green bidirectional laser light head, and the diameter of the preset grinding head are obtained. According to the preset beam angle formula The minimum distance when the preset laser lamp array is mapped onto the vehicle surface, the lamp head exit radius of the red-green bidirectional laser lamp head, and the diameter of the preset grinding head are calculated to determine the beam angle of the corresponding red-green bidirectional laser lamp head in the preset laser lamp array that satisfies the preset beam angle formula. Here, L is the minimum distance when the preset laser lamp array is mapped onto the vehicle surface, S is the lamp head exit radius of the red-green bidirectional laser lamp head, and R is the diameter of the preset grinding head. This refers to the beam angle of the corresponding red-green bidirectional laser head in the preset laser light matrix.
2. The method for indicating coating appearance defects as described in claim 1, characterized in that, The step of determining the required lighting pattern for each defect based on the defect type and defect size includes: Based on the first preset classification table, the defect type, and the defect size, the category to which each defect belongs is determined; Based on the first preset classification table and the category to which each defect belongs, the light pattern corresponding to the category to which each defect belongs is determined.
3. The method for indicating coating appearance defects as described in claim 1, characterized in that, Before marking each defect at the defect coordinates, the method further includes: Receive lighting control commands and obtain quantity information carried by the control commands; The number of red and green bidirectional laser heads in the preset laser light matrix is controlled by the quantity information in the light control command.
4. The method for indicating coating appearance defects as described in claim 1, characterized in that, After obtaining the defect information of each defect in the vehicle to be inspected, the process also includes: If the defect coordinates of each defect are determined to be three-dimensional coordinates, then the three-dimensional coordinates of each defect are deconstructed and converted into two-dimensional coordinates.
5. The method for indicating coating appearance defects as described in claim 1, characterized in that, The preset laser light matrix includes a four-way motor controller, a universal joint motor controller, a micro motor, multiple red and green bidirectional laser light heads, a light head filter wheel with rotating lenses, filters, universal joints, and an electronic control unit (ECU).
6. A marking device for coating appearance defects, characterized in that, The marking device for coating appearance defects includes: The acquisition module is used to acquire defect information of each defect in the vehicle to be inspected, wherein the defect information includes defect type, defect size and defect coordinates; The marking module is used to mark each defect at the defect coordinates based on the defect type and defect size according to a preset laser light dot matrix, wherein the defect marking is a light pattern; The step of marking each defect at the defect coordinates based on the preset laser light dot matrix according to the defect type and defect size includes: Based on the defect type and defect size, determine the light pattern to be marked for each defect; Based on the diameter of the preset grinding head, determine the beam angle of the corresponding red-green bidirectional laser head in the preset laser light matrix; Based on the preset laser dot matrix and the defect coordinates, the red-green bidirectional laser head is controlled to project the light pattern onto each defect at the defect coordinates according to the beam angle, so as to mark the defect; The minimum distance when the preset laser light dot matrix is mapped onto the vehicle surface, the lamp head exit radius of the red and green bidirectional laser light head, and the diameter of the preset grinding head are obtained. According to the preset beam angle formula The minimum distance when the preset laser lamp array is mapped onto the vehicle surface, the lamp head exit radius of the red-green bidirectional laser lamp head, and the diameter of the preset grinding head are calculated to determine the beam angle of the corresponding red-green bidirectional laser lamp head in the preset laser lamp array that satisfies the preset beam angle formula. Here, L is the minimum distance when the preset laser lamp array is mapped onto the vehicle surface, S is the lamp head exit radius of the red-green bidirectional laser lamp head, and R is the diameter of the preset grinding head. This refers to the beam angle of the corresponding red-green bidirectional laser head in the preset laser light matrix.
7. A marking device for coating appearance defects, characterized in that, The marking device for coating appearance defects includes a processor, a memory, and a marking program for coating appearance defects stored in the memory and executable by the processor, wherein when the marking program for coating appearance defects is executed by the processor, it implements the steps of the marking method for coating appearance defects as described in any one of claims 1 to 5.
8. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a marking program for coating appearance defects, wherein when the marking program for coating appearance defects is executed by a processor, it implements the steps of the marking method for coating appearance defects as described in any one of claims 1 to 5.