Furniture laser pattern engraving control system and method

Abstract

The invention discloses a furniture laser pattern engraving control system and method, and relates to the technical field of laser engraving control, the furniture laser pattern engraving control system comprises an engraving task division module, a control module, an acquisition module and a laser engraving module, the engraving task division module comprises a processing information unit, a processing information unit and a control module, engraving material data of the part; the mapping unit is used for receiving the engraved patterns uploaded by the user, virtually mapping the engraved patterns to the engraved parts of the furniture and acquiring target engraved patterns on the engraved parts corresponding to the furniture; and the dividing unit is based on the mapping position of the floral pattern and the carved part material data corresponding to the mapping position. According to the method, the material parameters of the furniture carving part are obtained, the carving floral patterns provided by the user are combined, the temperature response prediction model is constructed, the initial carving area with the thermal response similarity is divided, and on the premise that the thermal safety of the material is kept, targeted carving area scheduling is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of laser engraving control, in particular to a furniture laser pattern engraving control system and method. Background Art

[0002] In furniture manufacturing, laser engraving technology is widely used to create surface patterns on furniture components made of various materials, including wood, composite panels, veneer, glass, and metal. Existing laser engraving systems typically utilize a preset path and fixed power, making them suitable for batch production, simple structures, or furniture made of consistent materials. They have played a positive role in improving production efficiency and enabling customized decoration.

[0003] As furniture design becomes more diverse and customized, the engraving areas may have varying surface materials, structural forms, and thermal response characteristics. Laser processing can lead to uneven thermal focus, localized overheating, or engraving offsets. Furthermore, achieving pattern integrity and consistent quality requires precise coordination across multiple dimensions, including pattern distribution, thermal effects, and engraving rhythm.

[0004] After searching, a Chinese patent (publication number: CN116079243A) discloses a display control system based on laser engraving. The patent includes a sample information acquisition module, a sample virtual construction module, a laser engraving pre-analysis module, a laser engraving analysis module, a laser engraving control module and a cloud storage platform. By obtaining the sample information of the target clothing to be laser engraved, and constructing a three-dimensional model corresponding to the reference clothing based on it, the laser engraving fabric analysis and laser parameter setting analysis of the reference clothing are then performed.

[0005] In actual applications, as users' demand for personalized patterns, multi-area combination engraving and fine decorative effects increases, the engraving areas of furniture often show large differences in pattern density, complex path continuity and diverse processing materials. Faced with such complex and changeable pattern and material combinations, heat accumulation, pattern edge offset, or uneven processing between areas may occur during laser processing. Therefore, the present invention proposes a furniture laser pattern engraving control system and method. Summary of the Invention

[0006] The purpose of the present invention is to provide a furniture laser pattern engraving control system and method to solve the problems mentioned in the above background technology.

[0007] The present invention can be implemented through the following technical solutions: A furniture laser pattern engraving control system includes an engraving task division module, a control module, an acquisition module, and a laser engraving module;

[0008] The engraving task division module includes: a processing information unit, a mapping unit and a division unit;

[0009] The processing information unit is used to obtain material data of the carving part of the furniture to be processed;

[0010] The mapping unit is used to receive the carving pattern uploaded by the user, and virtually map it to the carving part of the furniture, and obtain the target carving pattern at the corresponding carving part of the furniture;

[0011] The dividing unit generates a set of working engraving areas with temperature similarity based on the mapping position of the pattern and the material data of the engraving part corresponding to the mapping position;

[0012] Then the division unit dynamically adjusts the region boundary of the initial engraving region based on the continuous path of the pattern, and finally outputs a set of working engraving regions;

[0013] The laser engraving module includes multiple groups of engraving components, each group of engraving components is used to process patterns on a group of working engraving areas;

[0014] When the furniture switches the working carving area, the acquisition module collects the status of the currently completed working carving area, including collecting the actual processing pattern image and the corresponding thermal distribution map information of the working area, and uploads them to the control module;

[0015] When the control module detects the acquired actual processing pattern image, the system performs position matching and deviation comparison on the image with the target engraving pattern pre-mapped to the area, and determines whether the offset error between the processing pattern and the preset pattern is within a set offset error threshold range;

[0016] At the same time, the control module detects the collected thermal distribution map to determine whether the current temperature of the working engraving area is lower than the preset processing safety temperature threshold;

[0017] If the offset error of the currently completed engraving area is less than the preset offset error threshold, and the current temperature is lower than the preset processing safety temperature threshold;

[0018] The control module then starts the next group of engraving components to process the pattern on the next working engraving area.

[0019] A further technical improvement of the present invention is that the method for obtaining the working engraving area set comprises the following steps:

[0020] A1. For the engraving part of the furniture, divide the unit to set n grid points (x, y), and extract the engraving part material data, pattern density value D(x, y) and preset laser power P0 corresponding to each grid point (x, y);

[0021] The material data of the engraved part includes density ρ(x,y), specific heat capacity C p (x,y), absorptivity α(x,y), thermal conductivity k;

[0022] Then, the expected laser processing temperature rise data ΔT(x,y) of the engraving part is constructed:

[0023] Where η is the laser conversion efficiency; d is the heated thickness of the material at the engraving site;

[0024] The division unit integrates the laser processing temperature rise data ΔT(x,y) of each unit area to obtain the temperature rise prediction distribution map ΔT of the corresponding engraving part. est (x,y);

[0025] A2. Temperature rise prediction distribution diagram ΔT est (x,y) performs regional clustering to obtain the initial carving area set And the expected temperature rise difference of each initial engraving area is within the tolerance range ±∈;

[0026] A3. Analyze the structure of the pattern, establish a line segment topology, and use methods such as DFS or union-find to identify the continuous path P of the pattern. k ;

[0027] And the division unit calculates each continuous path P k Whether it spans multiple initial engraving areas

[0028] A4. For the initially engraved area Boundary cutting path P k , set its integrity priority L k ;

[0029] Then calculate the path P k The total cost of boundary adjustment J(P k ), which is calculated as follows:

[0030] J(P k )=λ1·ΔT new +λ2·(1-L k );where ΔT new For path P k After being incorporated into a certain initial engraving area, the change in processing temperature rise in the initial engraving area;

[0031] λ1 is the weight factor of thermal balance, the larger the value, the more emphasis is placed on thermal control;

[0032] λ2 is the priority weight of the continuity of the pattern. The larger the value, the more attention is paid to the pattern not being cut off.

[0033] If the path P of a certain pattern k If it spans two initial engraving areas, try to merge them separately. or Calculate the total cost of the two boundary adjustments J(P k ) value, select the solution with lower cost to execute;

[0034] A5. Adjust the boundary to the total cost value J(P k ) is compared with a preset cost threshold;

[0035] If the boundary adjustment total cost J(P k ) is less than the cost threshold, the boundary of the corresponding initial engraving area is expanded inward / outward to merge the paths;

[0036] If the boundary adjustment total cost J(P k ) is not less than the cost threshold, then the boundary of the initial engraving area is maintained;

[0037] A6. Output and integrate the initial engraving area adjusted in step A5 to form the final working engraving area set

[0038] A further technical improvement of the present invention is to divide the unit to set the thermal risk threshold T th , and the division unit is based on the thermal risk threshold T th , generate the thermal risk shielding mask map M(x,y);

[0039]

[0040] Wherein, M(x,y)=1 indicates that the unit area is the part to be shielded;

[0041] M(x,y)=0 indicates that the unit area is a machinable area.

[0042] A further technical improvement of the present invention is that the dividing unit divides the pattern path P k After mapping to the carved part of the furniture, determine the path P k Is there any point that overlaps with the area where M(x,y)=1?

[0043] If there is overlap, the division unit transmits the grid point (x, y) information of the part to the control module;

[0044] When the laser engraving module processes the corresponding part of the furniture, the control module starts a preset cooling mechanism or power reduction.

[0045] A further technical improvement of the present invention is that the method for the control module to perform position matching and deviation comparison includes the following steps:

[0046] Z1, the control module randomly selects N detection parts P1, P2, ..., P in the completed engraving area N , and the detection part corresponds to the feature point coordinates in the target engraving pattern

[0047] Z2, the control module extracts the actual point coordinates of the corresponding position in the actual processing pattern image And the control module calculates the offset error E between the coordinates of each feature point and the actual point coordinates i ;

[0048] in,

[0049] Z3, the control module determines the offset error E between the coordinates of each feature point and the actual point coordinates i Is it less than the preset offset error threshold?

[0050] A further technical improvement of the present invention is that in step Z3:

[0051] If each offset error E i If both are smaller than the preset offset error threshold, the test passes;

[0052] If a certain offset error E i If the error is not less than the preset offset error threshold, the control module selects the corresponding detection position P i , and taking it as the center, identify its path P in the target pattern k ;

[0053] And the processing module along the path P k direction, select several secondary re-inspection locations F1, F2, ..., F in its front and back neighborhood according to the preset fixed intervals N , and perform the same secondary offset error calculation as in step Z2;

[0054] If, during the secondary offset error calculation, there is still a secondary re-inspection location where the offset error is not less than the preset offset error threshold, the processing module determines that the completed engraving area is a local continuous machining offset abnormality area, and the processing module issues a warning message, prompting that manual review is required.

[0055] A further technical improvement of the present invention is that: the detection part selected by the processing module in step Z1 is preferentially the corresponding pattern path P k The characteristic structural points in the image include but are not limited to turning points, endpoints, path starting or ending points, path intersections, curvature mutation points, closed path connection points, pattern main axis points, and decorative boundary points.

[0056] The present invention also discloses a furniture laser pattern engraving control method, which comprises the following steps:

[0057] S1. Obtain material data of the carved part of the furniture to be processed, and virtually map the carved pattern uploaded by the user to the carved part of the furniture to generate a target carved pattern;

[0058] S2. Based on the mapping position of the target engraving pattern and the corresponding engraving part material data, a set of working engraving regions with temperature similarity is generated, and according to the continuous path of the target engraving pattern, the region boundary of the initial engraving region is dynamically adjusted to obtain the set of working engraving regions;

[0059] S3, the control module controls the multiple engraving components in the laser engraving module to process patterns on each working engraving area in turn;

[0060] S4. When the furniture switches the working engraving area, the acquisition module collects the status of the currently completed working engraving area, including the actual processing pattern image and thermal distribution map information of the area, and uploads it to the control module;

[0061] S5. The control module compares the position of the acquired actual processing pattern image with the target engraving pattern to determine whether the offset error is lower than a preset offset error threshold, and also determines whether the current temperature of the area is lower than a preset processing safety temperature threshold; if both judgment conditions are met, the next group of engraving components is started to process the pattern on the next working engraving area.

[0062] Compared with the prior art, the present invention has the following beneficial effects:

[0063] The present invention obtains the material parameters of the furniture carving parts and combines them with the carving patterns provided by the user to construct a temperature response prediction model, divides the initial carving areas with similar thermal responses, and realizes targeted carving area scheduling while maintaining the thermal safety of the material, which helps to reduce the risk of heat accumulation during laser processing and improve processing efficiency and safety.

[0064] The present invention further introduces a mechanism for pattern path continuity recognition and dynamic adjustment of regional boundaries, so that the final working engraving area can maintain both processing thermal balance and main path continuity and appearance consistency in pattern structure, thereby realizing a processing path optimization strategy that takes into account both thermal control and pattern accuracy.

[0065] In addition, the present invention also includes an actual processing status detection mechanism. By collecting pattern processing images and thermal distribution maps, the engraving error and temperature status are judged, and the next workstation is switched only after the preset conditions are met, thereby constructing a closed-loop control logic based on image recognition and thermal feedback, improving the system's intelligent judgment ability and overall engraving consistency. BRIEF DESCRIPTION OF THE DRAWINGS

[0066] To facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0067] Figure 1 This is a system block diagram of the engraving control system of the present invention;

[0068] Figure 2 Flowchart of the engraving control method of the present invention. DETAILED DESCRIPTION

[0069] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the invention, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0070] See also Figure 1-2 As shown, the present invention provides a furniture laser pattern engraving control system, including an engraving task division module, a control module, an acquisition module, and a laser engraving module;

[0071] The engraving task division module includes a processing information unit, a mapping unit, and a division unit;

[0072] The processing information unit is used to obtain material data for the engraving part of the furniture to be processed. This material data includes material type (solid wood, MDF board, plywood, veneer, plastic, metal edging, glass inlay, which affects laser absorption rate, ignition point, carbonization tendency, etc.), reflectivity (affecting laser power setting to prevent energy waste or reflection damage), thermal conductivity (determining the risk of heat accumulation and cooling strategy; for example, MDF has low thermal conductivity, so it is necessary to avoid heat overlap during continuous processing), and absorptivity (determining initial engraving depth and energy efficiency; for example, solid wood absorbs well but is prone to carbonization, so the scanning frequency needs to be reduced or the scanning speed needs to be increased).

[0073] In this embodiment, the material data of the carved parts of the furniture is selected by the user during the furniture model design or pattern upload stage, and the corresponding material characteristic parameter table is called from the database, thereby achieving the purpose of stable parameters and high furniture standardization when carving furniture in batches;

[0074] The mapping unit is used to receive the carving pattern uploaded by the user and virtually map it to the carving part of the furniture, and obtain the target carving pattern at the corresponding carving part of the furniture;

[0075] The dividing unit generates a set of working engraving areas with temperature similarity based on the mapping position of the pattern and the material data of the engraving part corresponding to the mapping position;

[0076] Then the division unit dynamically adjusts the region boundary of the initial engraving region based on the continuous path of the pattern, and finally outputs a set of working engraving regions;

[0077] The method for obtaining a working engraving area set includes the following steps:

[0078] A1. For the engraving part of the furniture, divide the unit to set n grid points (x, y), and extract the engraving part material data, pattern density value D(x, y) and preset laser power P0 corresponding to each grid point (x, y);

[0079] The material data of the engraved part includes density ρ(x,y), specific heat capacity C p (x,y), absorptivity α(x,y), thermal conductivity k;

[0080] Then, the expected laser processing temperature rise data ΔT(x,y) of the engraving part is constructed:

[0081] Where η is the laser conversion efficiency; d is the heated thickness of the material at the engraving site;

[0082] The division unit integrates the laser processing temperature rise data ΔT(x,y) of each unit area to obtain the temperature rise prediction distribution map ΔT of the corresponding engraving part. est (x,y);

[0083] A2. Temperature rise prediction distribution diagram ΔT est (x,y) performs regional clustering to obtain the initial carving area set And the expected temperature rise difference of each initial engraving area is within the tolerance range ±∈;

[0084] In this embodiment, the regional clustering division adopts mean shift clustering;

[0085] A3. Analyze the structure of the pattern, establish a line segment topology, and use methods such as DFS or union-find to identify the continuous path P of the pattern. k , path P k Including main line segments, closed figures, stroke sequences, etc.

[0086] And the division unit calculates each continuous path P k Whether it spans multiple initial engraving areas

[0087] A4. For the initially engraved area Boundary cutting path P k , set its integrity priority L k ;

[0088] Then calculate the path P k The total cost of boundary adjustment J(P k ), which is calculated as follows:

[0089] J(P k )=λ1·ΔT new +λ2·(1-L k );where ΔT new For path P k After being incorporated into a certain initial engraving area, the change in processing temperature rise in the initial engraving area;

[0090] λ1 is the weight factor of thermal balance, the larger the value, the more emphasis is placed on thermal control;

[0091] λ2 is the priority weight of the continuity of the pattern. The larger the value, the more attention is paid to the pattern not being cut off.

[0092] If the path P of a certain pattern k If it spans two initial engraving areas, try to merge them separately. or Calculate the total cost of the two boundary adjustments J(P k ) value, select the solution with lower cost to execute;

[0093] A5. Adjust the boundary to the total cost value J(P k ) is compared with a preset cost threshold;

[0094] If the boundary adjustment total cost J(P k ) is less than the cost threshold, the boundary of the corresponding initial engraving area is expanded inward / outward to merge the paths;

[0095] If the boundary adjustment total cost J(P k ) is not less than the cost threshold, then the boundary of the initial engraving area is maintained;

[0096] A6. Output and integrate the initial engraving area adjusted in step A5 to form the final working engraving area set

[0097] The laser engraving module includes multiple groups of engraving components, each group of engraving components is used to process patterns on a group of working engraving areas;

[0098] Divide the unit to set the thermal risk threshold T th , and the division unit is based on the thermal risk threshold T th , generate the thermal risk shielding mask map M(x,y);

[0099]

[0100] Wherein, M(x,y)=1 indicates that the unit area is the part to be shielded;

[0101] M(x,y)=0 means that the unit area is a machinable part;

[0102] The path P of the pattern is divided into two units k After mapping to the carved part of the furniture, determine the path P k Is there any point that overlaps with the area where M(x,y)=1?

[0103] If there is overlap, the division unit transmits the grid point (x, y) information of the part to the control module;

[0104] The control module activates a preset cooling mechanism or power downshift when the laser engraving module processes the corresponding furniture part;

[0105] When the furniture switches the working engraving area, the acquisition module collects the status of the currently completed working engraving area, including collecting the actual processing pattern image and corresponding thermal distribution map information of the working area, and uploads it to the control module;

[0106] When the control module detects the actual processing pattern image collected, the system performs position matching and deviation comparison on the image with the target engraving pattern pre-mapped to the area to determine whether the offset error between the processing pattern and the preset pattern is within the set offset error threshold range;

[0107] The method for controlling the module to perform position matching and deviation comparison includes the following steps:

[0108] Z1, the control module randomly selects N detection parts P1, P2, ..., P in the completed engraving area N , and the detection part corresponds to the feature point coordinates in the target engraving pattern

[0109] The detection part selected by the processing module in step Z1 is preferably the corresponding pattern path P k The characteristic structural points in include but are not limited to:

[0110] Turning point: A point in the pattern path where the direction changes dramatically, such as a corner point or a broken line node; it is prone to processing offset and requires precise positioning;

[0111] Endpoint: The starting or ending point of a path, usually representing the start or end of a structure or a splicing point. Offsets can easily expose overall pattern dislocations.

[0112] Path intersection: The location where two or more line segments intersect. If misalignment and intersection occur during processing, visual defects will occur.

[0113] Curvature mutation point: The curve changes dramatically or is at an extreme point, and high engraving accuracy is required;

[0114] Closed path connection point: The connection point of the closed loop of the closed pattern, which is most likely to cause closing failure or overlap offset during processing;

[0115] Pattern main axis point: the middle point or node of the main axis of the pattern, affecting the overall direction;

[0116] Decorative boundary point: located at the edge of the pattern or the outer frame, used to verify whether the overall size of the pattern is aligned with the boundary;

[0117] Z2, the control module extracts the actual point coordinates of the corresponding position in the actual processing pattern image And the control module calculates the offset error E between the coordinates of each feature point and the actual point coordinates i ;

[0118] in,

[0119] Z3, the control module determines the offset error E between the coordinates of each feature point and the actual point coordinates i Is it less than the preset offset error threshold?

[0120] In the Z3 step:

[0121] If each offset error E i If both are smaller than the preset offset error threshold, the test passes;

[0122] If a certain offset error E i If the error is not less than the preset offset error threshold, the control module selects the corresponding detection position P i , and taking it as the center, identify its path P in the target pattern k ;

[0123] And the processing module along the path P k direction, select several secondary re-inspection locations F1, F2, ..., F in its front and back neighborhood according to the preset fixed intervals N , and perform the same secondary offset error calculation as in step Z2;

[0124] If, during the secondary offset error calculation, the offset error of a certain secondary re-inspected area is still not less than the preset offset error threshold, the processing module determines that the completed engraving area is a local continuous machining offset abnormal area, and the processing module issues a warning message, prompting that manual review is required;

[0125] At the same time, the control module detects the collected thermal distribution map to determine whether the current temperature of the working engraving area is lower than the preset processing safety temperature threshold;

[0126] In this embodiment, the acquisition module uses an infrared thermal imaging camera to acquire thermal distribution information of the actual processing pattern image, and the control module analyzes the thermal distribution information, including but not limited to the following operations:

[0127] Temperature data extraction: extract the temperature characteristic value of the corresponding working engraving area from the thermal distribution map information to calculate the average temperature;

[0128] Temperature judgment: the average temperature of the entire area is used for judgment;

[0129] Judgment setting: The user sets the judgment temperature threshold based on experience, and supports material preset, real-time learning or experience adjustment;

[0130] Time compensation: If the average temperature is close to the judgment temperature threshold but has not yet met the processing conditions for the next set of engraving components, the system can automatically delay and wait for the cooling process to complete naturally, or start the air cooling / water cooling / thermal convection auxiliary module to accelerate cooling;

[0131] If the offset error of the currently completed engraving area is less than the preset offset error threshold, and the current temperature is lower than the preset processing safety temperature threshold;

[0132] The control module then starts the next group of engraving components to process the pattern on the next working engraving area.

[0133] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A furniture laser pattern engraving control system, comprising an engraving task division module, a control module, an acquisition module, and a laser engraving module, characterized in that: The engraving task division module includes: Processing information unit, which obtains the material data of the carving parts of the furniture to be processed; The mapping unit receives the carved pattern uploaded by the user and virtually maps it to the carved part of the furniture, obtaining the target carved pattern at the corresponding carved part of the furniture; A division unit generates a set of working engraving areas with temperature similarity based on the mapping position of the pattern and the material data of the engraving part corresponding to the mapping position; The laser engraving module includes multiple groups of engraving components, each group of engraving components is used to process patterns on a group of working engraving areas; When the furniture switches the working carving area, the acquisition module collects the actual processing pattern image and the corresponding thermal distribution map information of the currently completed working carving area, and uploads them to the control module; When the control module detects the acquired actual processing pattern image, the system performs position matching and deviation comparison on the image with the target engraving pattern pre-mapped to the area, and determines whether the offset error between the processing pattern and the preset pattern is within a set offset error threshold range; At the same time, the control module detects the collected thermal distribution map to determine whether the current temperature of the working engraving area is lower than the preset processing safety temperature threshold; If the offset error of the currently completed engraving area is less than the preset offset error threshold, and the current temperature is lower than the preset processing safety temperature threshold; The control module then starts the next group of engraving components to process the pattern on the next working engraving area.

2. A furniture laser pattern engraving control system according to claim 1, characterized in that: The method for obtaining the working engraving area set comprises the following steps: A1. For the engraving part of the furniture, divide the unit to set n grid points (x, y), and extract the engraving part material data, pattern density value D(x, y) and preset laser power P0 corresponding to each grid point (x, y); The material data of the engraved part includes density ρ(x,y), specific heat capacity C p (x,y), absorptivity α(x,y), thermal conductivity k; Then, the expected laser processing temperature rise data ΔT(x,y) of the engraving part is constructed: Where η is the laser conversion efficiency; d is the heated thickness of the material at the engraving site; The division unit integrates the laser processing temperature rise data ΔT(x,y) of each unit area to obtain the temperature rise prediction distribution map ΔT of the corresponding engraving part. est (x,y); A2. Temperature rise prediction distribution diagram ΔT est (x,y) performs regional clustering to obtain the initial carving area set And the expected temperature rise difference of each initial engraving area is within the tolerance range ±∈; A3. Analyze the structure of the pattern, establish a line segment topology, and identify the continuous path P of the pattern. k ; And the division unit calculates each continuous path P k Whether it spans multiple initial engraving areas A4. For the initially engraved area Boundary cutting path P k , set its integrity priority L k ; Then calculate the path P k The boundary-adjusted total value of A5. Compare the total cost of boundary adjustment with the preset cost threshold; If the boundary adjustment total cost J(P k ) is less than the cost threshold, the boundary of the corresponding initial engraving area is expanded inward / outward to merge the paths; If the boundary adjustment total cost J(P k ) is not less than the cost threshold, then the boundary of the initial engraving area is maintained; A6. Output and integrate the initial engraving area adjusted in step A5 to form the final working engraving area set 3. A furniture laser pattern engraving control system according to claim 2, characterized in that: Divide the unit to set the thermal risk threshold T th , and the division unit is based on the thermal risk threshold T th , generate the thermal risk shielding mask map M(x,y); Wherein, M(x,y)=1 indicates that the unit area is the part to be shielded; M(x,y)=0 indicates that the unit area is a machinable area.

4. A furniture laser pattern engraving control system according to claim 3, characterized in that: The path P of the pattern is divided into two units k After mapping to the carved part of the furniture, determine the path P k Is there any point that overlaps with the area where M(x,y)=1? If there is overlap, the division unit transmits the grid point (x, y) information of the part to the control module; When the laser engraving module processes the corresponding part of the furniture, the control module starts a preset cooling mechanism or power reduction.

5. The furniture laser pattern engraving control system according to claim 1, characterized in that: The method for the control module to perform position matching and deviation comparison includes the following steps: Z1, the control module randomly selects N detection parts P1, P2, ..., P in the completed engraving area N , and the detection part corresponds to the feature point coordinates in the target engraving pattern Z2, the control module extracts the actual point coordinates of the corresponding position in the actual processing pattern image , and the control module calculates the offset error between the coordinates of each feature point and the actual point coordinates; Z3, the control module determines the offset error E between the coordinates of each feature point and the actual point coordinates i Is it less than the preset offset error threshold? 6. The furniture laser pattern engraving control system according to claim 5, characterized in that: In the Z3 step: If each offset error E i If both are smaller than the preset offset error threshold, the test passes; If a certain offset error E i If the error is not less than the preset offset error threshold, the control module selects the corresponding detection position P i , and taking it as the center, identify its path P in the target pattern k ; And the processing module along the path P k direction, select several secondary re-inspection locations F1, F2, ..., F in its front and rear neighborhood according to the preset fixed intervals N , and perform the same secondary offset error calculation as in step Z2; If, during the secondary offset error calculation, there is still a secondary re-inspection location where the offset error is not less than the preset offset error threshold, the processing module determines that the completed engraving area is a local continuous machining offset abnormality area, and the processing module issues a warning message.

7. The furniture laser pattern engraving control system according to claim 5, characterized in that: The detection part selected by the processing module in step Z1 is preferably the corresponding pattern path P k Characteristic structural points in .

8. A method for controlling furniture laser pattern engraving, characterized in that: The engraving control method adopts the engraving control system according to any one of claims 1 to 7, and specifically comprises the following steps: S1. Obtain material data of the carved part of the furniture to be processed, and virtually map the carved pattern uploaded by the user to the carved part of the furniture to generate a target carved pattern; S2. Based on the mapping position of the target engraving pattern and the corresponding engraving part material data, a set of working engraving regions with temperature similarity is generated, and according to the continuous path of the target engraving pattern, the region boundary of the initial engraving region is dynamically adjusted to obtain the set of working engraving regions; S3, the control module controls the multiple engraving components in the laser engraving module to process patterns on each working engraving area in turn; S4. When the furniture switches the working engraving area, the acquisition module collects the status of the currently completed working engraving area, including the actual processing pattern image and thermal distribution map information of the area, and uploads it to the control module; S5. The control module compares the position of the acquired actual processing pattern image with the target engraving pattern to determine whether the offset error is lower than a preset offset error threshold, and also determines whether the current temperature of the area is lower than a preset processing safety temperature threshold; If both judgment conditions are met, the next group of engraving components is started to process the pattern on the next working engraving area.

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