A laser cleaning scanning line width self-adaptive adjustment system, method, device and medium

By using a laser cleaning scanning linewidth adaptive adjustment system, the brightness and color images of the uncleaned areas are monitored and adjusted in real time, solving the problem of inconsistent cleaning states in laser cleaning and achieving efficient and non-destructive material surface cleaning.

CN118874952BActive Publication Date: 2026-04-24ARMOR ACADEMY OF CHINESE PEOPLES LIBERATION ARMY
View PDF 2 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ARMOR ACADEMY OF CHINESE PEOPLES LIBERATION ARMY
Filing Date
2024-07-11
Publication Date
2026-04-24

AI Technical Summary

Technical Problem

Existing laser cleaning technologies suffer from inconsistent cleaning states when dealing with uneven cleaning substances, resulting in repeated processing, low efficiency, and easy damage to sensitive materials. In particular, it is difficult to accurately identify and clean when the substrate and the attached substance are similar in color.

Method used

A laser cleaning scanning linewidth adaptive adjustment system is adopted. The brightness and color images of the uncleaned area are acquired in real time through the photosensitive monitoring module, compared with the database to determine the edge boundary, and control commands are generated to adjust the laser scanning linewidth to achieve precise cleaning.

Benefits of technology

It improves the accuracy and adaptability of laser cleaning, avoids secondary irradiation damage to clean areas, and achieves non-destructive, high-quality material surface cleaning.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN118874952B_ABST
    Figure CN118874952B_ABST
Patent Text Reader

Abstract

The application discloses a laser cleaning scanning line width self-adaptive adjustment system, method, equipment and medium, relates to the fields of laser application technology and intelligent online monitoring of surface state, and the system comprises a computer control module, a photosensitive monitoring module and a line width regulation module; the photosensitive monitoring module acquires the brightness and color image of the laser interface line width of the area that is not cleaned on the surface of the material irradiated by the laser in real time, the computer control module compares the brightness and color image with the brightness and color standard image in the photosensitive comparison database to obtain a difference line width image, determines the second edge limit information of the area that is not cleaned, controls the line width regulation module to adjust the deflection angle of a galvanometer, and adjusts the length of the laser scanning line width; the laser cleaning scanning optical system performs re-cleaning on the area that is not cleaned according to the laser with the adjusted line width, and completes the cleaning of the overall area on the surface of the material that is cleaned. The application can improve the accuracy and self-adaptive adjustment of laser cleaning.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This application relates to the fields of laser application technology and intelligent online surface condition monitoring technology, and in particular to a laser cleaning scanning linewidth adaptive adjustment system, method, device and medium. Background Technology

[0002] During laser cleaning operations, the uneven thickness of the cleaning material leads to inconsistent cleaning states. Some areas are cleaned, while others remain uncleaned, exhibiting irregular shapes, random distribution, and inconsistent thickness. Traditional laser cleaning methods use a constant linewidth for complete coverage, requiring thorough cleaning before completion. This process involves numerous repetitions, low efficiency, poor surface uniformity, and a high risk of damage from excessive irradiation. This is particularly problematic for sensitive materials like titanium alloys and carbon fiber sheets, where repeated cleaning can result in ablation, oxidation, and wire breakage.

[0003] Currently, some scholars have conducted research on laser precision cleaning, such as using an adaptive vision edge positioning method for laser cleaning. After using a high-definition industrial camera to identify the uncleaned area, the edge boundary is generated. The control software generates a cleaning trajectory path according to the edge boundary and drives the laser galvanometer to perform local precision cleaning. However, under white light, the reflection intensity of the substrate and the attached object is extremely high, and it is impossible to accurately identify cleaning work where the substrate and the attached object are similar in color. At the same time, due to the influence of various factors such as interface flash and smoke in laser cleaning, the accuracy of adaptive vision precision cleaning is poor, and it is difficult to reliably perform laser precision cleaning response.

[0004] Therefore, there is an urgent need for a laser cleaning scanning linewidth adaptive adjustment system and method to solve the above problems. Summary of the Invention

[0005] The purpose of this application is to provide a laser cleaning scanning linewidth adaptive adjustment system, method, equipment, and medium, which can improve the accuracy and adaptive adjustability of laser cleaning.

[0006] To achieve the above objectives, this application provides the following solution:

[0007] In a first aspect, this application provides a laser cleaning scanning linewidth adaptive adjustment system, which is configured correspondingly to a laser cleaning scanning optical system. The laser cleaning scanning optical system includes a laser, a beam splitter, a galvanometer, a laser cleaning terminal, and a field lens. The laser cleaning scanning linewidth adaptive adjustment system includes a computer control module, a photosensitive monitoring module, and a linewidth control module.

[0008] The photosensitive monitoring module, fixed to the laser cleaning terminal and connected to the computer control module, is used to acquire in real time the brightness and color images of the laser interface linewidth of the uncleaned area on the surface of the material being cleaned by the laser cleaning beam, and send the brightness and color images of the laser interface linewidth to the computer control module; wherein, the edge boundary of the uncleaned area is the first edge boundary information; the first edge boundary information of the uncleaned area is obtained by identifying the surface of the material being cleaned using laser linewidth photosensitive monitoring edge positioning; the surface of the material being cleaned includes a coating and / or a substrate;

[0009] The computer control module is connected to the photosensitive monitoring module and the linewidth control module, respectively. It compares the received brightness and color images of the laser interface linewidth with standard brightness and color images of typical coatings and substrates in the photosensitive comparison database to obtain a difference linewidth image. Based on the difference linewidth image, it determines the second edge boundary information of the uncleaned area on the surface of the material being cleaned, generates control commands, and sends these commands to the linewidth control module. The control commands include shortening or lengthening the laser scanning linewidth.

[0010] The linewidth adjustment module is connected to the galvanometer and is used to adjust the deflection angle of the galvanometer according to the control command, so as to adjust the length of the laser scanning linewidth.

[0011] The laser cleaning scanning optical system uses the laser cleaning beam with adjusted linewidth to clean the uncleaned areas on the surface of the material being cleaned again, thus completing the overall cleaning of the surface of the material being cleaned.

[0012] Optionally, the monitoring position of the photosensitive monitoring module and the surface of the material being cleaned by the laser cleaning beam are within a preset angle range.

[0013] Optionally, the photosensitive monitoring module includes an industrial camera, and the industrial camera is equipped with a camera lens. The industrial camera is connected to the computer control module. The industrial camera is used to acquire in real time the brightness and color images of the laser interface linewidth of the uncleaned area on the surface of the material being cleaned by the laser cleaning beam, and send the brightness and color images of the laser interface linewidth to the computer control module.

[0014] Optionally, the linewidth adjustment module includes a servo motor, which is connected to both the computer control module and the galvanometer. The servo motor is used to adjust the deflection angle of the galvanometer according to the control command.

[0015] Optionally, the coating is one or a combination of several of the following: paint layer, rust layer, carbon deposit layer, oil layer, or oxide film layer.

[0016] Optionally, the matrix is ​​a metallic matrix or a non-metallic matrix; the metallic matrix includes titanium alloy matrix, aluminum alloy matrix and iron-based alloy matrix; the non-metallic matrix includes carbon fiber matrix and ceramic matrix.

[0017] Secondly, this application provides a laser cleaning scanning linewidth adaptive adjustment method, based on the aforementioned laser cleaning scanning linewidth adaptive adjustment system, the laser cleaning scanning linewidth adaptive adjustment method comprising:

[0018] The system acquires in real-time brightness and color images of the laser interface linewidth of the uncleaned area on the surface of the material being cleaned, as irradiated by the laser cleaning beam. The edge boundary of the uncleaned area is defined as first edge boundary information. This first edge boundary information is obtained by identifying the surface of the material being cleaned using laser linewidth photosensitive edge positioning. The surface of the material being cleaned includes a coating and / or a substrate.

[0019] The brightness and color images of the laser interface linewidth are compared with the standard brightness and color images of typical coatings and substrates in the photosensitive comparison database to obtain a difference linewidth image. Based on the difference linewidth image, the second edge boundary information of the uncleaned area on the surface of the material being cleaned is determined, and a control command is generated. The control command includes shortening or lengthening the laser scanning linewidth.

[0020] The deflection angle of the galvanometer is adjusted according to the control command to adjust the length of the laser scanning linewidth;

[0021] The laser cleaning beam with adjusted linewidth is used to clean the uncleaned areas on the surface of the material being cleaned again, thus completing the overall cleaning of the surface of the material being cleaned.

[0022] Optionally, the first edge boundary information of the uncleaned area is obtained by identifying the surface of the material to be cleaned using a laser linewidth photosensitive edge positioning method, specifically including:

[0023] The surface of the material to be cleaned is photographed, and the cleaned area and the uncleaned area on the surface of the material to be cleaned are identified based on the photographed image, so as to obtain the first edge boundary information of the uncleaned area.

[0024] Thirdly, this application provides a computer device, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the laser cleaning scanning linewidth adaptive adjustment method described above.

[0025] Fourthly, this application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the laser cleaning scanning linewidth adaptive adjustment method described above.

[0026] According to the specific embodiments provided in this application, the following technical effects are disclosed:

[0027] This application provides a laser cleaning scanning linewidth adaptive adjustment system, method, device, and medium. It employs laser linewidth photosensitive monitoring for edge positioning to determine the first edge boundary information of uncleaned areas. By comparing the brightness and color images of the laser interface linewidth obtained from online monitoring of the uncleaned area with standard images of laser cleaning interface linewidth brightness and color in a photosensitive comparison database, a second edge boundary information of the uncleaned area is obtained. This achieves more precise positioning of the uncleaned area, ensuring accurate cleaning of the uncleaned area during subsequent cleaning. Simultaneously, it avoids secondary irradiation of clean areas by the laser cleaning beam, preventing damage. This provides methodological support for non-destructive, high-quality, and intelligent laser cleaning of material surfaces. Furthermore, this application can adjust the scanning linewidth of the laser cleaning beam in real time, achieving adaptive adjustment of the laser scanning linewidth. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 A schematic diagram of the functional modules of a laser cleaning scanning linewidth adaptive adjustment system provided in an embodiment of this application;

[0030] Figure 2 This is a flowchart illustrating a laser cleaning scanning linewidth adaptive adjustment method according to another embodiment of this application.

[0031] Symbol explanation:

[0032] Laser-1, beam splitter-2, galvanometer-3, laser cleaning terminal-4, field lens-5, computer control module-6, photosensitive monitoring module-7, linewidth control module-8, surface of the material to be cleaned-9. Detailed Implementation

[0033] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0034] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] In one exemplary embodiment, such as Figure 1 As shown, this application provides a laser cleaning scanning linewidth adaptive adjustment system, which is configured correspondingly to a laser cleaning scanning optical system. The laser cleaning scanning optical system includes a laser 1, a beam splitter 2, a galvanometer 3, a laser cleaning terminal 4, and a field lens 5. The laser cleaning scanning linewidth adaptive adjustment system includes a computer control module 6, a photosensitive monitoring module 7, and a linewidth adjustment module 8.

[0036] The photosensitive monitoring module 7, fixed to the laser cleaning terminal 4 and connected to the computer control module 6, is used to acquire in real time the brightness and color images of the laser interface linewidth of the uncleaned area on the surface 9 of the material to be cleaned by the laser cleaning beam, and send the brightness and color images of the laser interface linewidth to the computer control module 6; wherein, the edge boundary of the uncleaned area is the first edge boundary information; the first edge boundary information of the uncleaned area is obtained by identifying the surface 9 of the material to be cleaned by laser linewidth photosensitive monitoring edge positioning; the surface 9 of the material to be cleaned includes a coating and / or a substrate. The coating is the dirt that needs to be cleaned away.

[0037] The computer control module 6 is connected to the photosensitive monitoring module 7 and the linewidth control module 8, respectively. It is used to compare the received brightness and color images of the laser interface linewidth with the typical laser cleaning interface brightness and color standard images of the coating and substrate in the photosensitive comparison database to obtain a difference linewidth image. Based on the difference linewidth image, it determines the second edge boundary information of the uncleaned area on the surface 9 of the material being cleaned, generates a control command, and sends the control command to the linewidth control module 8. The control command includes shortening or lengthening the laser scanning linewidth.

[0038] The linewidth adjustment module 8, connected to the galvanometer 3, is used to adjust the deflection angle of the galvanometer 3 according to the control command, thereby adjusting the length of the laser scanning linewidth. The contour of the dirt layer is usually irregular. If a common scanning method with a fixed linewidth is used, areas that do not need to be scanned will be scanned indiscriminately and burned. Therefore, the linewidth adjustment module 8 adjusts the laser scanning linewidth in real time according to the contour of the dirt layer, ensuring that the laser scanning line always falls on the dirt layer (the uncleaned area) without touching the clean surface.

[0039] The laser cleaning scanning optical system uses the laser cleaning beam with adjusted linewidth to clean the uncleaned areas on the surface 9 of the material being cleaned again, thus completing the overall cleaning of the surface 9 of the material being cleaned.

[0040] Furthermore, the monitoring position of the photosensitive monitoring module 7 and the surface 9 of the material to be cleaned, which is focused by the laser cleaning beam, meet a preset angle range, so that the laser cleaning beam can fully irradiate the surface 9 of the material to be cleaned.

[0041] As an optional implementation, the photosensitive monitoring module 7 includes an industrial camera, and the industrial camera is equipped with a camera lens. The industrial camera is connected to the computer control module 6. The industrial camera is used to acquire in real time the brightness and color images of the laser interface linewidth of the uncleaned area on the surface 9 of the material being cleaned by the laser cleaning beam, and send the brightness and color images of the laser interface linewidth to the computer control module 6.

[0042] As an optional implementation, the linewidth adjustment module 8 includes a servo motor, which is connected to both the computer control module 6 and the galvanometer 3. The servo motor is used to adjust the deflection angle of the galvanometer 3 according to the control command. Specifically, upon receiving the control command from the computer control module 6, the servo motor drives the galvanometer 3 to deflect at high speed at a corresponding angle according to the corresponding voltage and angle conversion ratio, thereby changing the laser beam path. Different angles result in different lengths of the laser cleaning beam on the beam splitter 2, which directly manifests as different scanning linewidths of the entire laser cleaning beam.

[0043] As an optional implementation, the coating is one or a combination of several of the following: paint layer, rust layer, carbon deposit layer, oil layer, or oxide film layer.

[0044] As an optional implementation, the substrate is a metallic substrate or a non-metallic substrate; the metallic substrate includes titanium alloy substrate, aluminum alloy substrate and iron-based alloy substrate; the non-metallic substrate includes carbon fiber substrate and ceramic substrate.

[0045] In one exemplary embodiment, a working process of a laser cleaning scanning linewidth adaptive adjustment system is provided, specifically including the following steps:

[0046] Step 1: Establish a photosensitive comparison database including standard images of linewidth, brightness, and color of laser cleaning interfaces for typical coatings and different substrates, so that the computer can perform comparison processing on the input standard images of linewidth, brightness, and color of laser cleaning interfaces to obtain the edge boundaries of the corresponding detected areas.

[0047] Step 2: Select the paint layer on the surface of the iron-bonded material as the object to be cleaned. The average thickness of the paint layer is 170um, the thickest part is 210um, and the thinnest part is 100um. Start the laser cleaning scanning optical system and use a pulsed laser with a wavelength of 1064nm, a repetition frequency of 15Hz, and an output power of 300W to scan the paint layer on the surface of the iron-bonded material. The scanning speed is 3000mm / s, and the scanning path is S-shaped. Start the laser cleaning scanning linewidth adaptive adjustment system. The photosensitive monitoring module 7 is attached to the laser cleaning terminal 4 and the monitoring position is aligned with the surface 9 of the material to be cleaned where the laser cleaning beam is focused.

[0048] Step 3: The photosensitive monitoring module 7 moves in parallel with the laser cleaning beam linewidth to detect the brightness and color of the laser linewidth in real time, obtaining brightness and color images of the laser cleaning linewidth. The computer control module 6 then determines the first edge boundary information of the uncleaned area. Specifically, the computer control module 6 determines the first edge boundary information of the uncleaned area based on the brightness and color images of the laser cleaning linewidth. The feedback response time from the photosensitive monitoring module 7 to the computer control module 6 is no greater than 0.05 seconds.

[0049] Step 4: After the first cleaning of the iron-based alloy surface by the laser cleaning beam, 80% of the area is cleaned. The remaining 20% ​​of the uncleaned area shows a discontinuous distribution of the paint layer. When the cleaned iron-based alloy is irradiated by the laser, it shows high brightness and white light. When the paint layer is irradiated by the laser, it shows significantly darker brightness and dark yellow. That is, there is a difference in linewidth brightness and color between the two. The image is acquired by the photosensitive monitoring module 7 and analyzed by the computer control module 6 with high precision. The difference in linewidth image is compared with the standard images of linewidth brightness and color of the laser cleaning interface of the paint layer and the iron-based alloy substrate in the photosensitive comparison database to obtain the second edge boundary information of the uncleaned coating in the corresponding monitored area.

[0050] Step 5: The computer control module 6 feeds back the second edge boundary information of the unwashed coating to the line width control module 8, and generates control commands to control the line width control module 8 to adjust the deflection angle of the galvanometer 3 in real time to shorten or lengthen the laser scanning line width. That is, it drives the laser galvanometer 3 to dynamically deflect the unwashed area to clean it again, while the already cleaned area is not scanned again until the overall cleaning is achieved.

[0051] Technical effects of this application:

[0052] 1) The brightness and color of the laser interface linewidth in uncleaned areas are monitored online by the photosensitive monitoring module using laser linewidth photosensitive edge positioning. The computer control module compares the brightness and color images of the laser interface linewidth in uncleaned areas with standard images of laser cleaning interface linewidth brightness and color of typical coatings and different substrates in the photosensitive comparison database to determine the second edge boundary information. Control commands are generated to control the linewidth adjustment module to adjust the galvanometer deflection angle to shorten or lengthen the laser scanning linewidth for precise cleaning of uncleaned areas. The obtained second edge boundary information of uncleaned areas is more accurate, which is beneficial for precise re-cleaning of uncleaned areas.

[0053] 2) It avoids accidental irradiation of clean areas that do not need cleaning, thus preventing damage or burning of the clean areas. It can reliably monitor the linewidth of discontinuous coating laser cleaning of various material surfaces with fast response and high precision, systematically evaluate the cleaning quality, and make adjustments when necessary, providing methodological support for non-destructive, high-quality, and intelligent laser cleaning of material surfaces.

[0054] 3) It can adjust the laser scanning line width in real time, achieving adaptive adjustment of the laser scanning line width.

[0055] Based on the same inventive concept, this application also provides a laser cleaning scanning linewidth adaptive adjustment method based on the laser cleaning scanning linewidth adaptive adjustment system described above. The solution provided by this method is similar to the implementation scheme described in the above system. Therefore, the specific limitations in the embodiments of the laser cleaning scanning linewidth adaptive adjustment method provided below can be found in the limitations of the laser cleaning scanning linewidth adaptive adjustment system described above, and will not be repeated here.

[0056] In one exemplary embodiment, such as Figure 2 As shown, a laser cleaning scanning linewidth adaptive adjustment method is provided. This method is executed by a computer device, specifically by a terminal or server alone, or by both a terminal and a server. In this embodiment, the method is described using a server as an example, and includes the following steps S1 to S4. Wherein:

[0057] Step S1: Real-time acquisition of the brightness and color images of the laser interface linewidth of the uncleaned area of ​​the surface 9 of the material to be cleaned irradiated by the laser cleaning beam; wherein, the edge boundary of the uncleaned area is the first edge boundary information; the first edge boundary information of the uncleaned area is obtained by identifying the surface 9 of the material to be cleaned by using laser linewidth photosensitive monitoring edge positioning; the surface 9 of the material to be cleaned includes a coating and / or a substrate.

[0058] Step S2: The brightness and color images of the laser interface linewidth are compared with the standard brightness and color images of the typical coating and substrate laser cleaning interface linewidth in the photosensitive comparison database to obtain a difference linewidth image. Based on the difference linewidth image, the second edge boundary information of the uncleaned area on the surface 9 of the material being cleaned is determined, and a control command is generated. The control command includes shortening or lengthening the laser scanning linewidth.

[0059] Step S3: Adjust the deflection angle of the galvanometer 3 according to the control command to adjust the length of the laser scanning line width.

[0060] Step S4: The uncleaned areas on the surface 9 of the material to be cleaned are cleaned again according to the laser cleaning beam with adjusted line width, so as to complete the overall cleaning of the surface 9 of the material to be cleaned.

[0061] As an optional implementation, the first edge boundary information of the uncleaned area is obtained by identifying the surface 9 of the material to be cleaned using a laser linewidth photosensitive edge positioning method, specifically including:

[0062] The surface 9 of the material to be cleaned is captured in an image, and the clean area and the unclean area of ​​the surface 9 of the material to be cleaned are identified based on the captured image, so as to obtain the first edge boundary information of the unclean area.

[0063] In one exemplary embodiment, a computer device is also provided, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps in the above-described method embodiments.

[0064] In one exemplary embodiment, a computer-readable storage medium is provided storing a computer program that, when executed by a processor, implements the steps in the above-described method embodiments.

[0065] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, data stored, data displayed, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of the relevant data must comply with relevant regulations.

[0066] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM).

[0067] The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, etc., and are not limited to these.

[0068] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0069] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. Furthermore, those skilled in the art will recognize that, based on the ideas of this application, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A laser cleaning scanning linewidth adaptive adjustment system, corresponding to a laser cleaning scanning optical system, wherein the laser cleaning scanning optical system includes a laser, a beam splitter, a galvanometer, a laser cleaning terminal, and a field lens; characterized in that, The laser cleaning scanning linewidth adaptive adjustment system includes: a computer control module, a photosensitive monitoring module, and a linewidth control module; The photosensitive monitoring module, fixed to the laser cleaning terminal and connected to the computer control module, is used to acquire in real time the brightness and color images of the laser interface linewidth of the uncleaned area on the surface of the material being cleaned by the laser cleaning beam, and send the brightness and color images of the laser interface linewidth to the computer control module; wherein, the edge boundary of the uncleaned area is the first edge boundary information; the first edge boundary information of the uncleaned area is obtained by identifying the surface of the material being cleaned using laser linewidth photosensitive monitoring edge positioning; the surface of the material being cleaned includes a coating and / or a substrate; The computer control module is connected to the photosensitive monitoring module and the linewidth control module, respectively. It compares the received brightness and color images of the laser interface linewidth with standard brightness and color images of typical coatings and substrates in the photosensitive comparison database to obtain a difference linewidth image. Based on the difference linewidth image, it determines the second edge boundary information of the uncleaned area on the surface of the material being cleaned, generates control commands, and sends these commands to the linewidth control module. The control commands include shortening or lengthening the laser scanning linewidth. The linewidth adjustment module is connected to the galvanometer and is used to adjust the deflection angle of the galvanometer according to the control command, so as to adjust the length of the laser scanning linewidth. The laser cleaning scanning optical system uses the laser cleaning beam with adjusted linewidth to clean the uncleaned areas on the surface of the material being cleaned again, thus completing the overall cleaning of the surface of the material being cleaned.

2. The laser cleaning scanning linewidth adaptive adjustment system according to claim 1, characterized in that, The monitoring position of the photosensitive monitoring module and the surface of the material being cleaned, which is focused by the laser cleaning beam, meet a preset angle range.

3. The laser cleaning scanning linewidth adaptive adjustment system according to claim 1, characterized in that, The photosensitive monitoring module includes an industrial camera, and the industrial camera is equipped with a camera lens. The industrial camera is connected to the computer control module. The industrial camera is used to acquire in real time the brightness and color images of the laser interface linewidth of the uncleaned area on the surface of the material being cleaned by the laser cleaning beam, and send the brightness and color images of the laser interface linewidth to the computer control module.

4. The laser cleaning scanning linewidth adaptive adjustment system according to claim 1, characterized in that, The linewidth adjustment module includes a servo motor, which is connected to both the computer control module and the galvanometer. The servo motor is used to adjust the deflection angle of the galvanometer according to the control command.

5. The laser cleaning scanning linewidth adaptive adjustment system according to claim 1, characterized in that, The coating is one or a combination of several of the following: paint layer, rust layer, carbon deposit layer, oil stain layer, or oxide film layer.

6. The laser cleaning scanning linewidth adaptive adjustment system according to claim 1, characterized in that... The matrix can be a metallic matrix or a non-metallic matrix; the metallic matrix includes titanium alloy matrix, aluminum alloy matrix and iron-based alloy matrix; the non-metallic matrix includes carbon fiber matrix and ceramic matrix.

7. A method for adaptive adjustment of laser cleaning scanning linewidth, based on the laser cleaning scanning linewidth adaptive adjustment system according to any one of claims 1-6, characterized in that, The laser cleaning scan linewidth adaptive adjustment method includes: The system acquires in real-time brightness and color images of the laser interface linewidth of the uncleaned area on the surface of the material being cleaned, as irradiated by the laser cleaning beam. The edge boundary of the uncleaned area is defined as first edge boundary information. This first edge boundary information is obtained by identifying the surface of the material being cleaned using laser linewidth photosensitive edge positioning. The surface of the material being cleaned includes a coating and / or a substrate. The brightness and color images of the laser interface linewidth are compared with the standard brightness and color images of typical coatings and substrates in the photosensitive comparison database to obtain a difference linewidth image. Based on the difference linewidth image, the second edge boundary information of the uncleaned area on the surface of the material being cleaned is determined, and a control command is generated. The control command includes shortening or lengthening the laser scanning linewidth. The deflection angle of the galvanometer is adjusted according to the control command to adjust the length of the laser scanning linewidth; The laser cleaning beam with adjusted linewidth is used to clean the uncleaned areas on the surface of the material being cleaned again, thus completing the overall cleaning of the surface of the material being cleaned.

8. The laser cleaning scanning linewidth adaptive adjustment method according to claim 7, characterized in that, The first edge boundary information of the uncleaned area is obtained by identifying the surface of the material to be cleaned using a laser linewidth photosensitive edge positioning method. Specifically, it includes: The surface of the material to be cleaned is captured in an image, and the cleaned area and the uncleaned area on the surface of the material to be cleaned are identified based on the captured image, so as to obtain the first edge boundary information of the uncleaned area.

9. A computer device, comprising: The memory and processor contain a computer program stored in the memory and executable on the processor, characterized in that the processor executes the computer program to implement the steps of the laser cleaning scanning linewidth adaptive adjustment method according to any one of claims 7-8.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When executed by a processor, the computer program implements the steps of the laser cleaning scanning linewidth adaptive adjustment method as described in any one of claims 7-8.

Citation Information

Patent Citations

  • Welding control method and device and electronic equipment

    CN112355478A

  • Laser self-adaptive cleaning device and method for surface of glass material

    CN115336944A