A multi-body system optical fiber laser coupling beamlet cleaning system
By using a multi-mode fiber laser coupling beam system that combines continuous laser and pulsed laser, and utilizing a laser rangefinder for automatic focusing, the problems of high cost and low efficiency of traditional laser cleaning equipment are solved, achieving low-cost and high-efficiency laser cleaning results.
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
- 2026-07-24
AI Technical Summary
Traditional laser cleaning equipment is expensive and inefficient, making it difficult to meet the high-efficiency cleaning requirements of aircraft aluminum alloy skin coatings, especially on uneven surfaces where frequent focus adjustments affect efficiency.
A multi-system fiber laser coupling beam system is adopted, combining continuous laser and pulsed laser. The focal length is automatically adjusted by a laser rangefinder, which realizes automatic focusing of the laser cleaning head, reduces equipment costs and improves cleaning efficiency.
It significantly improves cleaning efficiency at a low cost, can adapt to complex and irregular surfaces, automatically adjusts the focal length, and enables continuous operation, solving the problems of high price and inconvenient focal length adjustment of traditional laser cleaning equipment.
Smart Images
Figure CN118874951B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the fields of laser application technology and surface laser processing technology, and in particular to a multi-mode fiber laser coupled beam cleaning system. Background Technology
[0002] High-quality and efficient removal of excess coatings from material surfaces is a key concern for maintenance and high-level manufacturing. However, on the one hand, mechanical and chemical solvent cleaning is difficult, highly toxic, and causes serious pollution; on the other hand, cleaning and substrate surface reprocessing are carried out in separate steps, resulting in low efficiency, time and material consumption, and cumbersome processes, which can easily cause secondary damage to the substrate. As a result, traditional chemical, mechanical, and sandblasting surface cleaning methods cannot meet the cleaning needs of difficult-to-clean coatings on aircraft aluminum alloy skins. Against this backdrop, laser cleaning, as a green, non-destructive, and low-cost ideal technology, has developed rapidly and received high attention.
[0003] The biggest problem with laser cleaning is its low efficiency. Because laser-cleaned surfaces are often uneven, the distance between the laser cleaning terminal and the surface to be cleaned changes with the unevenness. This necessitates constant adjustments to the distance for focusing, affecting the continuous scanning speed and resulting in low efficiency. Currently, increasing the power of the laser cleaning equipment is commonly used to improve efficiency. However, high-power laser cleaning equipment is expensive; for example, a 1000W laser cleaning device can cost several million yuan, and its large size and weight make it inconvenient to use. Therefore, there is an urgent need for a low-cost and highly efficient laser cleaning system. Summary of the Invention
[0004] The purpose of this application is to provide a multi-mode fiber laser coupled beam cleaning system that can improve cleaning efficiency at a low cost.
[0005] To achieve the above objectives, this application provides the following solution:
[0006] A multi-mode fiber laser coupled beam cleaning system includes:
[0007] The system comprises a computer control unit, a laser emitter unit, a two-stage coupling unit, and a laser cleaning terminal unit. The laser emitter unit includes a continuous laser generator, a pulsed laser generator, and a laser ranging laser. The continuous laser generator and the pulsed laser generator emit cleaning lasers, and the laser ranging laser emits ranging lasers. The two-stage coupling unit includes a first-stage processing coupling module and a second-stage processing coupling module. The laser cleaning terminal unit includes a cleaning head and a detection and sensing module.
[0008] The computer control unit is connected to the cleaning head, the detection and sensing module, the continuous laser generator, the pulsed laser generator, and the laser ranging laser, respectively.
[0009] The first-stage processing coupling module is disposed on the output optical path of the continuous laser generator and the output optical path of the pulsed laser generator; the second-stage processing coupling module is disposed on the output optical path of the first-stage processing coupling module and the output optical path of the laser ranging laser; the cleaning head is disposed on the output optical path of the second-stage processing coupling module; the detection and sensing module is disposed on the reflected optical path, which is formed by the light reflected after the ranging laser emitted by the cleaning head illuminates the surface of the product to be cleaned; the detection and sensing module is used to obtain the distance between the cleaning head and the surface of the product to be cleaned as measured by the ranging laser, and send the distance to the computer control unit, which is used to control the cleaning head to automatically focus according to the distance.
[0010] Optionally, the multi-mode fiber laser coupled beam cleaning system further includes: fiber optic units;
[0011] The fiber optic unit is disposed on the output optical path from the continuous laser generator and the pulsed laser generator to the first-stage processing coupling module.
[0012] Optionally, the laser emitter unit further includes: a control and adjustment module, an electronic control module, and a safety control and monitoring module;
[0013] The input terminal of the electronic control module is connected to the output terminal of the computer control unit, the output terminal of the electronic control module is connected to the input terminal of the control and adjustment module, the output terminal of the control and adjustment module is connected to the continuous laser generator, the pulsed laser generator and the laser ranging laser respectively, and the safety control and monitoring module is connected to the computer control unit, the continuous laser generator, the pulsed laser generator and the laser ranging laser respectively.
[0014] Optionally, the two-stage coupling unit further includes: an output module;
[0015] The output module is located on the output optical path from the second-stage processing coupling module to the cleaning head.
[0016] Optionally, the optical fiber unit includes: an optical receiving module, an optical amplifier module, an optical filter, and a spectral adjustment module;
[0017] The optical receiving module is disposed on the output optical path of the continuous laser generator and the output optical path of the pulsed laser generator; the optical amplifier module is disposed on the output optical path of the optical receiving module; the optical filter is disposed on the output optical path of the optical amplifier module; and the spectral adjustment module is disposed on the output optical path of the optical filter. The first-stage processing coupling module is disposed on the output optical path of the spectral adjustment module.
[0018] Optionally, the detection and sensing module is a laser ranging sensor.
[0019] Optionally, the laser ranging laser is a solid-state laser, a semiconductor laser, or a fiber laser.
[0020] Optionally, the laser cleaning terminal unit further includes: a motion positioning module; the motion positioning module is disposed on the cleaning head; the motion positioning module is connected to the computer control unit; the computer control unit is used to control the motion positioning module according to the distance, thereby realizing automatic focusing of the cleaning head.
[0021] Optionally, the laser cleaning terminal unit further includes a laser emitting module; the laser emitting module is disposed on the output optical path from the output module to the cleaning head.
[0022] According to the specific embodiments provided in this application, the following technical effects are disclosed:
[0023] This application provides a multi-mode fiber laser coupled beam cleaning system. By setting up a continuous laser generator and a pulsed laser generator to emit cleaning lasers, it can utilize both the strong ablation capability of the continuous laser and the rapid cleaning capability of the pulsed laser on the ablated carbonized layer. The price of the multi-mode laser equipment with two laser beams coupled is much lower than that of a single-mode pulsed laser cleaning equipment with the same cleaning efficiency. The computer control unit can automatically adjust the focal length to improve the cleaning efficiency. This application can improve the cleaning efficiency at a low cost. Attached Figure Description
[0024] 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.
[0025] Figure 1 A structural block diagram of a multi-mode fiber laser coupled beam cleaning system provided in the embodiments of this application;
[0026] Figure 2Three-dimensional morphology images of the surfaces after cleaning with multi-mode laser and single-mode laser;
[0027] Figure 3 SEM images of the surfaces after multi-mode laser cleaning and single-mode laser cleaning;
[0028] Figure 4 A simplified structural diagram of the multi-mode fiber laser coupled beam cleaning system provided in the embodiments of this application. Detailed Implementation
[0029] 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 of ordinary skill in the art without creative effort are within the scope of protection of this application.
[0030] 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.
[0031] like Figure 1 As shown, this application provides a multi-mode fiber laser coupled beam cleaning system, comprising:
[0032] The system comprises a computer control unit, a laser emitter unit, a two-stage coupling unit, and a laser cleaning terminal unit; the laser emitter unit includes: a continuous laser generator, a pulsed laser generator, and a laser ranging laser; the continuous laser generator and the pulsed laser generator are used to emit cleaning lasers, and the laser ranging laser is used to emit ranging lasers; the two-stage coupling unit ( Figure 4 The unit (shown as a coupling cavity) includes a first-stage processing coupling module and a second-stage processing coupling module; the laser cleaning terminal unit includes a cleaning head and a detection and sensing module.
[0033] The computer control unit is connected to the cleaning head, the detection and sensing module, the continuous laser generator, the pulsed laser generator, and the laser ranging laser, respectively.
[0034] The first-stage processing coupling module is located on the output optical path of the continuous laser generator and the output optical path of the pulsed laser generator. The second-stage processing coupling module is located on the output optical path of the first-stage processing coupling module and the output optical path of the laser ranging laser. The cleaning head is located on the output optical path of the second-stage processing coupling module. The detection and sensing module is located on the reflected optical path, which is formed by the light reflected after the ranging laser emitted by the cleaning head illuminates the surface of the product to be cleaned. The detection and sensing module is used to acquire the distance between the cleaning head and the surface of the product to be cleaned, as measured by the ranging laser, and sends the distance to the computer control unit. The computer control unit is used to control the cleaning head to automatically focus based on the distance. The detection and sensing module mainly measures the distance between the laser output from the laser head of the laser ranging laser and the surface of the product to be cleaned.
[0035] As an optional implementation, the multi-mode fiber laser coupled bundle cleaning system further includes: an optical fiber unit; the optical fiber unit is disposed on the output optical path from the continuous laser generator and the pulsed laser generator to the first-stage processing coupling module.
[0036] As an optional implementation, the laser emitter unit further includes: a control and adjustment module, an electronic control module, and a safety control and monitoring module. The input terminal of the electronic control module is connected to the output terminal of the computer control unit, and the output terminal of the electronic control module is connected to the input terminal of the control and adjustment module. The output terminal of the control and adjustment module is connected to the continuous laser generator, the pulsed laser generator, and the laser ranging laser, respectively. The safety control and monitoring module is connected to the computer control unit, the continuous laser generator, the pulsed laser generator, and the laser ranging laser, respectively. The safety control and monitoring module is used to perform safety monitoring on the continuous laser generator, the pulsed laser generator, and the laser ranging laser, and sends the monitoring data to the computer control unit. The control and adjustment module is used to control and adjust the power, frequency, and other main parameters of the continuous laser generator and the nanosecond laser, as well as the beam emission of the laser ranging laser, according to the computer's instructions, to achieve laser beam adjustment. The output terminal of the electronic control module is connected to the input terminal of the control and adjustment module, serving as the link between the computer and the control and adjustment module, and converting electrical signals into control and adjustment operation signals.
[0037] As an optional implementation, the two-stage coupling unit further includes: an output module; the output module is disposed on the output optical path from the second-stage processing coupling module to the cleaning head; the first-stage processing coupling module is used to couple the laser emitted by the continuous laser generator and the laser emitted by the pulsed laser generator into a cleaning laser beam, and the second-stage processing coupling module is used to couple the cleaning laser beam emitted by the first-stage processing coupling module and the ranging laser output by the laser ranging laser into a laser beam that can be output through a single optical fiber.
[0038] In practical applications, both the first-stage processing coupling module and the second-stage processing coupling module are fiber optic combiners.
[0039] As an optional implementation, the fiber unit includes: an optical receiving module, an optical amplifier module, an optical filter, and a spectral adjustment module; the optical receiving module is disposed on the output optical path of the continuous laser generator and the output optical path of the pulsed laser generator; the optical amplifier module is disposed on the output optical path of the optical receiving module; the optical filter is disposed on the output optical path of the optical amplifier module; and the spectral adjustment module is disposed on the output optical path of the optical filter; the first-stage processing coupling module is disposed on the output optical path of the spectral adjustment module. The optical receiving module receives the laser beams from the continuous laser generator and the pulsed laser generator; the optical amplifier module amplifies the energy density of the laser beam received by the optical receiving module; the optical filter performs noise filtering, gain equalization, and optical multiplexing / demultiplexing on the amplified laser beam; and the spectral adjustment module performs selection of different wavelength laser beam combinations for continuous and nanosecond lasers, adjusts the spot diameter, and adjusts the laser transmission power.
[0040] As an optional implementation, the detection and sensing module is a laser ranging sensor.
[0041] As an optional implementation, the laser ranging laser is a solid-state laser, a semiconductor laser, or a fiber laser, preferably a fiber laser.
[0042] As an optional implementation, the laser cleaning terminal unit further includes: a motion positioning module; the motion positioning module is disposed on the cleaning head; the motion positioning module is connected to the computer control unit; the computer control unit is used to control the motion positioning module according to the distance obtained by the detection and sensing module, thereby realizing automatic focusing of the cleaning head. The motion positioning module mainly adjusts the laser cleaning focal length according to the detected sensing data and the shape of the surface to be cleaned, thereby enabling the laser cleaning head to move with the surface shape.
[0043] As an optional implementation, the laser cleaning terminal unit further includes: a housing, an optical lens, and a laser cleaning operation control cable; the optical lens is disposed between the laser emitting module and the cleaning head, and the optical lens, the laser cleaning operation control cable, the motion positioning module, the laser emitting module, the cleaning head, and the laser ranging sensor are all disposed within the housing; the laser cleaning operation control cable transmits ranging information to the computer control unit and transmits computer operation instructions to the motion positioning module; the motion positioning module adjusts the operation actions according to the computer instructions; and the laser cleaning method is direct laser radiation.
[0044] In practical applications, the laser cleaning terminal unit further includes a laser emitting module; the laser emitting module is disposed on the output optical path from the output module to the cleaning head.
[0045] As an optional implementation, the laser emitting module can be a continuous laser, a nanosecond laser, or a ranging laser.
[0046] In practical applications, this application uses laser rangefinder for autofocus. The basic principle is that the laser rangefinder emits a laser, the reflected laser is received by the laser rangefinder sensor, and the computer processes the data to drive the motion positioning module to adjust the distance between the cleaning head and the surface being cleaned for focusing. The autofocus computer control software is a mature product, such as the civilian Nikon Camera Control Pro2.
[0047] In practical applications, the laser cleaning terminal unit is used to carry the laser transmitted by the fiber optic unit and perform laser cleaning and ranging operations. The laser used for laser cleaning is a 1064nm continuous fiber laser generator and a 1064nm pulsed fiber laser generator.
[0048] The operation steps of the multi-mode fiber laser coupled beam cleaning system provided in the above embodiments are as follows:
[0049] S1: Select a laser cleaning method and perform laser cleaning beam assembly.
[0050] S1.1: Select the laser cleaning beam mode and determine the output energy of each laser beam through the computer control unit.
[0051] S1.2: Debug the laser beam output and verify the smoothness of the laser beam output.
[0052] S2: Adjust the position and focal length of the laser cleaning head.
[0053] S2.1: The computer control unit controls the laser rangefinder to emit a short laser pulse toward the target object.
[0054] S2.2: The detection and sensing module uses the laser pulse to strike the target surface and then reflect the laser back, and uses pulse ranging (for long-distance measurement) or interferometric ranging (for precision measurement and short-distance measurement).
[0055] S2.3: Adjust the position and focal length of the laser cleaning head according to the measured distance to ensure that the laser cleaning beam is always focused.
[0056] S3: Determine the laser cleaning process.
[0057] S3.1: Adjust the power output of continuous laser and pulsed laser through the computer control unit according to the requirements of the cleaning task.
[0058] S3.2: The relative time sequence of continuous laser and pulsed laser is controlled by a computer control unit to achieve beam combination.
[0059] S3.3: The laser output power, frequency, pulse width, and scanning speed of the pulsed laser generator are controlled by a computer control unit to meet cleaning requirements.
[0060] S3.4: The laser output power of the continuous laser generator and the synchronous pulse laser scanning speed are controlled by the computer control unit to meet the cleaning requirements.
[0061] S4: Focus the multi-mode coupled laser beam formed by the first-stage coupling of continuous laser and pulsed laser onto the target surface, and perform laser cleaning operation on the target surface according to the laser cleaning process parameters set in S3.
[0062] S4.1: Focus the laser beam onto the target surface and use the laser pulse to interact with the contaminant, causing the contaminant to evaporate and burn for mechanical removal.
[0063] S4.2: Detect the working status of the laser cleaning terminal and perform fault detection and alarm.
[0064] S4.3: Record key parameters during the cleaning process, including continuous laser power, pulsed laser power, frequency, pulse width, and scanning speed.
[0065] This application provides two embodiments to verify that the multi-mode fiber laser coupled beam cleaning system provided in the above embodiments can achieve high cleaning efficiency, wherein the paint is conventional protective paint for aircraft:
[0066] Example 1
[0067] Step 1: Select the multi-mode laser beam parameters for laser cleaning: "500W 1064nm continuous laser + 100W 1064nm pulsed laser". First, use the 500W 1064nm continuous laser for cleaning alone, and then use the 100W 1064nm pulsed laser for cleaning. The pulsed laser frequency is 100kHz, the pulse width is 200ns, the diameter of the circular spot is 0.5mm, and the scanning path is S-shaped.
[0068] Step 2: Select the laser parameters for laser ranging: 1064nm Nd:YAG laser, 100mW.
[0069] Step 3: The continuous laser scanning speed is 5000 mm / s, and the pulsed laser scanning speed is 3000 mm / s.
[0070] Step 4: The multi-mode laser is output through the laser cleaning terminal and scanned on the surface of the aluminum alloy skin paint layer. The material surface is cleaned by scanning twice, first with continuous laser and then with pulsed laser.
[0071] Step 5: Using a 1000W single-mode pulsed laser cleaning device, scan the surface of the aluminum alloy skin paint layer in the manner of steps 1-3, and compare the cleaning efficiency of the two methods.
[0072] Figure 2 The above examples show the 3D surface morphology images after multi-mode laser and single-mode laser cleaning. When using a multi-mode laser ("500W 1064nm continuous laser + 100W 1064nm pulsed laser") with an S-shaped scanning path, the paint layer is effectively removed. The 3D surface morphology images after multi-mode laser and single-mode laser cleaning are shown below. Figure 2 As shown in (a); when a 1000W single-mode pulsed laser cleaning device is used, with an S-shaped scanning path and a scanning speed of 5000 mm / s, the paint layer is effectively removed. The three-dimensional surface morphology images after multi-mode laser and single-mode laser cleaning are shown below. Figure 2 As shown in (b), the cleaning efficiency of both is comparable, both being 5.5m. 2 / h.
[0073] Example 2
[0074] Step 1: Select the multi-mode laser beam parameters for laser cleaning: "500W 1064nm continuous laser + 100W 1064nm pulsed laser". Output the continuous laser and pulsed laser simultaneously with an energy ratio of 3:1 (continuous laser energy: pulsed laser energy). The pulsed laser frequency is 100kHz, the pulse width is 200ns, the diameter of the circular spot is 0.5mm, and the scanning path is S-shaped.
[0075] Step 2: Select the laser parameters for laser ranging: 1064nm Nd:YAG laser, 100mW.
[0076] Step 3: Scanning speed is 5000 mm / s.
[0077] Step 4: The multi-mode laser is output through the laser cleaning terminal and scanned on the surface of the aluminum alloy skin paint layer. A single scan will result in a clean material surface.
[0078] Step 5: Using a 1000W single-mode pulsed laser cleaning device, scan the surface of the aluminum alloy skin paint layer in the manner of steps 1-3, and compare the cleaning efficiency of the two methods.
[0079] Figure 3 The above examples show the surface scanning electron microscope (SEM) morphology images after multi-mode laser and single-mode laser cleaning. When using a multi-mode laser (500W 1064nm continuous laser + 100W 1064nm pulsed laser), with an S-shaped scanning path and a scanning speed of 5000mm / s, the paint layer was effectively removed. The surface SEM morphology images after multi-mode laser and single-mode laser cleaning are shown below. Figure 3 (a); When a 1000W single-mode pulsed laser cleaning device is used, with an S-shaped scanning path and a scanning speed of 5000 mm / s, the paint layer is effectively removed. The surface scanning electron microscope morphology images after multi-mode laser and single-mode laser cleaning are shown below. Figure 3 As shown in (b), the cleaning efficiency of both is comparable, both being 5.5m. 2 / h.
[0080] This application has the following beneficial effects:
[0081] 1. This application adopts a multi-mode fiber laser coupling beam mode of continuous laser + pulsed laser, which can give full play to the strong ablation ability of continuous laser and the rapid cleaning ability of pulsed laser on ablated carbonized layer. The price of multi-mode laser equipment with two laser beams coupled is much lower than that of single-mode pulsed laser cleaning equipment with the same cleaning efficiency.
[0082] 2. The laser ranging beam of this application is kept constant under computer control. By adding laser ranging and automatic focusing functions, it can automatically adjust the distance between the cleaning terminal and the cleaning surface according to the changes in the complex and irregular surface shape of the object being cleaned, keeping the laser cleaning focal length constant and automatically focusing in real time. There is no need for continuous manual intervention to adjust the focal length during the laser cleaning process, which improves the continuous operation capability of multi-system laser cleaning, makes the cleaning operation smooth, greatly improves the cleaning efficiency, and solves the problem of poor controllability of laser cleaning focal length.
[0083] 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.
[0084] 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 multi-mode fiber laser coupled beam cleaning system, characterized in that, The multi-mode fiber laser coupled beam cleaning system includes: The system comprises a computer control unit, a laser emitter unit, a two-stage coupling unit, and a laser cleaning terminal unit. The laser emitter unit includes a continuous laser generator, a pulsed laser generator, a laser ranging laser, a control and adjustment module, an electronic control module, and a safety control and monitoring module. The continuous laser generator and the pulsed laser generator emit cleaning lasers, and the laser ranging laser emits ranging lasers. The two-stage coupling unit includes a first-stage processing coupling module and a second-stage processing coupling module. The laser cleaning terminal unit includes a cleaning head and a detection and sensing module. The computer control unit is connected to the cleaning head, the detection and sensing module, the continuous laser generator, the pulsed laser generator, and the laser ranging laser, respectively. The first-stage processing coupling module is disposed on the output optical path of the continuous laser generator and the output optical path of the pulsed laser generator; the second-stage processing coupling module is disposed on the output optical path of the first-stage processing coupling module and the output optical path of the laser ranging laser; the cleaning head is disposed on the output optical path of the second-stage processing coupling module; the detection and sensing module is disposed on the reflected optical path, which is formed by the light reflected after the ranging laser emitted by the cleaning head illuminates the surface of the product to be cleaned; the detection and sensing module is used to obtain the distance between the cleaning head and the surface of the product to be cleaned as measured by the ranging laser, and send the distance to the computer control unit, which is used to control the cleaning head to automatically focus according to the distance. The input terminal of the electronic control module is connected to the output terminal of the computer control unit, and the output terminal of the electronic control module is connected to the input terminal of the control and adjustment module. The output terminal of the control and adjustment module is connected to the continuous laser generator, the pulsed laser generator, and the laser ranging laser, respectively. The safety control and monitoring module is connected to the computer control unit, the continuous laser generator, the pulsed laser generator, and the laser ranging laser, respectively. The safety control and monitoring module is used to perform safety monitoring on the continuous laser generator, the pulsed laser generator, and the laser ranging laser, and to send the monitoring data to the computer control unit.
2. The multi-mode fiber laser coupled beam cleaning system according to claim 1, characterized in that, The multi-mode fiber laser coupling beam cleaning system also includes: fiber optic units; The fiber optic unit is disposed on the output optical path from the continuous laser generator and the pulsed laser generator to the first-stage processing coupling module.
3. The multi-mode fiber laser coupled beam cleaning system according to claim 1, characterized in that, The two-stage coupling unit further includes: an output module; The output module is located on the output optical path from the second-stage processing coupling module to the cleaning head.
4. The multi-mode fiber laser coupled beam cleaning system according to claim 2, characterized in that, The optical fiber unit includes: an optical receiving module, an optical amplifier module, an optical filter, and a spectral adjustment module; The optical receiving module is disposed on the output optical path of the continuous laser generator and the output optical path of the pulsed laser generator; the optical amplifier module is disposed on the output optical path of the optical receiving module; the optical filter is disposed on the output optical path of the optical amplifier module; and the spectral adjustment module is disposed on the output optical path of the optical filter. The first-stage processing coupling module is disposed on the output optical path of the spectral adjustment module.
5. The multi-mode fiber laser coupled beam cleaning system according to claim 1, characterized in that, The detection and sensing module is a laser ranging sensor.
6. The multi-mode fiber laser coupled beam cleaning system according to claim 1, characterized in that, The laser used for laser ranging is a solid-state laser, a semiconductor laser, or a fiber laser.
7. The multi-mode fiber laser coupled beam cleaning system according to claim 1, characterized in that, The laser cleaning terminal unit further includes: a mobile positioning module; the mobile positioning module is disposed on the cleaning head; the mobile positioning module is connected to the computer control unit; the computer control unit is used to control the mobile positioning module according to the distance, thereby realizing automatic focusing of the cleaning head.
8. The multi-mode fiber laser coupled beam cleaning system according to claim 3, characterized in that, The laser cleaning terminal unit further includes a laser emitting module; the laser emitting module is disposed on the output optical path from the output module to the cleaning head.