Furniture laser pattern engraving control system and method

Abstract

The application discloses a kind of furniture laser pattern engraving control system and method, it is related to laser engraving control technical field, including engraving task division module, control module, acquisition module and laser engraving module, the engraving task division module includes: processing information unit, the engraving part material data of furniture to be processed is obtained, engraving part material data;Mapping unit, user uploads engraving pattern, and virtually map to the engraving part of furniture, obtain target engraving pattern in the corresponding engraving part of furniture;Division unit, based on the mapping position of pattern and the engraving part material data corresponding to mapping position.The application obtains the material parameter of furniture engraving part, and combines the engraving pattern provided by user, constructs temperature response prediction model, divides initial engraving area with thermal response similarity, realizes targeted engraving area scheduling under the premise of keeping material thermal safety.

Description

TECHNICAL FIELD

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

[0002] In the furniture manufacturing process, laser engraving technology is widely used in the surface pattern processing of furniture components made of different materials such as wood, composite board, veneer, glass and metal. The existing laser engraving system usually uses a preset path for fixed power processing, which is suitable for batch production, simple structure or consistent material of furniture products, and plays a positive role in improving production efficiency and realizing decoration customization.

[0003] With the development of furniture design towards diversification and customization, the engraved area of furniture may have different surface materials, structural forms and thermal response characteristics, and heat focusing unevenness, local overheating or engraving deviation may occur during laser processing. In addition, in order to meet the requirements of pattern integrity and quality consistency, precise coordination is needed in terms of pattern distribution, processing thermal effect and engraving rhythm.

[0004] Through retrieval, a display control system based on laser engraving is disclosed in Chinese patent (publication number: CN116079243A), which 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 acquiring the sample information of the target clothing to be laser engraved, a three-dimensional model graph corresponding to the reference clothing is constructed, and then laser engraving fabric analysis and laser parameter setting analysis are performed on the reference clothing.

[0005] In practical application, with the increasing demand of users for personalized patterns, multi-region combined engraving and fine decoration effect, the engraved area of furniture often presents the characteristics of large pattern density difference, complex path continuity and multiple processing materials. In the face of such complex and variable pattern and material combination, heat accumulation, pattern edge deviation or uneven treatment between regions may occur during laser processing, therefore the present application proposes a furniture laser pattern engraving control system and method. SUMMARY

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

[0007] The present application can be realized by the following technical scheme: a furniture laser pattern engraving control system, comprising an engraving task division module, a control module, an acquisition module and a laser engraving module.

[0008] The engraving task division module comprises a processing information unit, a mapping unit and a division unit.

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

[0010] The mapping unit is used to upload the carved pattern by the user and virtually map it to the carved part of the furniture, and acquire the target carved pattern on the carved part corresponding to the furniture;

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

[0012] Then, the division unit dynamically adjusts the area boundary of the initial carved area based on the continuous path of the pattern, and finally outputs the set of working carved areas;

[0013] The laser carving module includes a plurality of groups of carving components, and each group of carving components is used to process the pattern of a group of working carved areas;

[0014] The acquisition module acquires the state of the working carved area that has been completed processing when the furniture switches the working carved area, including acquiring the actual processing pattern image of the working area and the corresponding heat distribution map information, and uploading to the control module;

[0015] When the control module detects the actual processing pattern image collected, the system matches the image with the target carved pattern mapped to the area in position and compares the deviation, judges whether the offset error between the processing pattern and the preset pattern is within the set offset error threshold range;

[0016] At the same time, the control module detects the heat distribution map collected, and judges whether the current temperature of the working carved area is lower than the preset processing safety temperature threshold;

[0017] If the offset error of the working carved area that has been completed processing is less than the preset offset error threshold, and the current temperature is lower than the preset processing safety temperature threshold;

[0018] Then the control module starts the next group of carving components to process the pattern of the next working carved area.

[0019] Further technical improvements of the present application are that the method for obtaining the set of working carved areas comprises the following steps:

[0020] A1, for the carved part of the furniture, the division unit sets n grid points (x, y), and extracts the carved part material data, the pattern density value D(x, y) and the preset laser power P0 corresponding to each grid point (x, y);

[0021] The material data of the engraved part includes density p(x, y), specific heat capacity C p (x, y), absorption rate a(x, y), and thermal conductivity k.

[0022] Then, the predicted laser processing temperature rise data AT(x, y) of the engraved part is constructed:

[0023] In the formula, η is the laser conversion efficiency; d is the material thickness of the engraved part under heat;

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

[0025] A2, the temperature rise prediction distribution map AT est (x, y) is regionally clustered and divided to obtain an initial engraved region set And the predicted temperature rise difference of each initial engraved region is within the tolerance range ±∈;

[0026] A3, the structure of the pattern is analyzed, the line segment topology graph is established, and the DFS or union set method is used to identify the continuous path P k of the pattern.

[0027] And the partition unit calculates whether each continuous path P k crosses multiple initial engraved regions

[0028] A4, for the path P cut by the boundary of the initial engraved region k , set its integrity priority L k .

[0029] Then, the boundary adjustment total value J(P k ) of the path P k is calculated, and the calculation formula is:

[0030] J(P k ) = λ1·ΔT new + λ2·(1-L k ); In the formula, ΔT new is the change value of the processing temperature rise in the initial engraved region after the path P k is incorporated into the initial engraved region;

[0031] λ1 is the weight factor of thermal equilibrium, and the larger it is, the more attention is paid to thermal control;

[0032] λ2 is the continuity priority weight of the pattern, and the larger it is, the more attention is paid to the pattern not being cut;

[0033] If the path P of a certain pattern k If it spans two initial carving areas, then attempt to merge them separately. or Calculate the total adjusted cost J(P) for each of the two boundaries. k The lower-cost option is selected based on the given value.

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

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

[0036] If the boundary adjustment total value J(P) k If the cost threshold is not less than the initial cost threshold, then the boundary of the initial sculpted region is preserved.

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

[0038] A further technical improvement of the present invention is that: a thermal risk threshold T is set for the partitioned units. th Furthermore, the unit division is based on the thermal risk threshold T. th Generate a thermal risk shielding mask image M(x,y);

[0039]

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

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

[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 coincides with the part where M(x,y)=1?

[0043] If there is overlap, the dividing unit will transmit the grid point (x, y) information of that part to the control module;

[0044] When the laser engraving module processes the corresponding furniture part, the control module activates a preset cooling mechanism or reduces the power level.

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

[0046] Z1, the control module randomly selects N detection positions P1, P2,..., P N in the finished work engraving area, and the detection positions correspond to feature point coordinates in the target engraving pattern

[0047] Z2, the control module extracts actual point coordinates corresponding to the positions in the actual machining pattern image , and the control module calculates the offset error E of each feature point coordinate and the actual point coordinate i ;

[0048] , wherein

[0049] Z3, the control module judges whether the offset error E of each feature point coordinate and the actual point coordinate is less than a preset offset error threshold. i

[0050] Further technical improvements of the application are that in the Z3 step:

[0051] If each offset error E i is less than the preset offset error threshold, the detection passes;

[0052] If a certain offset error E i is not less than the preset offset error threshold, the control module selects the corresponding detection position P i , and identifies the path P k to which it belongs in the target pattern with the detection position as the center.

[0053] And the processing module selects a plurality of secondary rechecking positions F1, F2,..., F k in the front and rear neighborhoods of the path P N in the direction of the path at a preset fixed interval, and performs the same secondary offset error calculation as the Z2 step.

[0054] If in the secondary offset error calculation, there is still a secondary rechecking position whose offset error is not less than the preset offset error threshold, the processing module determines that the finished work engraving area is a local continuity machining offset abnormal area, and the processing module issues a warning information to prompt manual review.

[0055] Further technical improvements of the application are that the detection positions selected by the processing module in the Z1 step are preferentially feature structure points in the corresponding pattern path P k , including but not limited to turning points, end points, path starting or ending points, path intersection points, curvature mutation points, closed path connection points, pattern principal axis points, and decorative boundary points.

[0056] ​The application also discloses a furniture laser pattern engraving control method.

[0057] S1, material data of an engraved part of furniture to be processed is acquired, and a user-uploaded virtual engraved pattern is mapped to the engraved part of the furniture, so that a target engraved pattern is generated;

[0058] S2, based on the mapping position of the target engraved pattern and the material data of the engraved part corresponding to the mapping position, a working engraved region set with temperature similarity is generated, and the region boundary of an initial engraved region is dynamically adjusted according to the continuous path of the target engraved pattern, so that the working engraved region set is obtained;

[0059] S3, a control module controls a plurality of engraved components in a laser engraving module to sequentially process patterns in each working engraved region;

[0060] S4, when the furniture switches the working engraved region, a state of a working engraved region that has been processed is collected by a collection module, and actual processing pattern image and heat distribution information of the region are collected and uploaded to the control module;

[0061] S5, the control module compares the collected actual processing pattern image with the target engraved pattern in position, judges whether the offset error is lower than a preset offset error threshold, and judges whether the current temperature of the region is lower than a preset processing safety temperature threshold; if both the two conditions are met, the next working engraved region is processed by the next engraved component.

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

[0063] The application acquires material parameters of an engraved part of furniture, combines an engraved pattern provided by a user, constructs a temperature response prediction model, divides initial engraved regions with similar heat responses, realizes targeted engraved region scheduling under the premise of maintaining material heat safety, helps to reduce heat accumulation risk in the laser processing process, and improves processing efficiency and safety.

[0064] The application further introduces continuity recognition of a pattern path and a region boundary dynamic adjustment mechanism, so that the finally formed working engraved region can maintain processing heat balance and keep main path continuity and appearance consistency in the pattern structure, so that a processing path optimization strategy that takes into account heat control and pattern accuracy is realized.

[0065] In addition, the application also includes an actual processing state detection mechanism, which judges the engraving error and temperature state by collecting the pattern processing image and the heat distribution map, and only switches to the next station after meeting the preset conditions, so as to build a closed-loop control logic based on image recognition and heat feedback, and improve the intelligent judgment ability and overall engraving consistency of the system. BRIEF DESCRIPTION OF DRAWINGS

[0066] In order to facilitate the understanding of those skilled in the art, the application will be further described below in conjunction with the drawings.

[0067] Fig. 1 The system block diagram of the engraving control system in the application is shown in the figure.

[0068] Fig. 2 The flow chart of the engraving control method in the application is shown in the figure. DETAILED DESCRIPTION

[0069] In order to further illustrate the technical means and effects adopted by the application to achieve the predetermined application purpose, the specific implementation, structure, features and effects according to the application are described in detail below in conjunction with the drawings and preferred embodiments.

[0070] Please refer to Figs. 1-2 As shown in the figure, the application provides a furniture laser pattern engraving control system, which comprises an engraving task division module, a control module, an acquisition module and a laser engraving module.

[0071] The engraving task division module comprises a processing information unit, a mapping unit and a division unit.

[0072] The processing information unit is used to obtain the engraving part material data of the furniture to be processed, and the engraving part material data comprises material types (solid wood, MDF board, plywood, veneer board, plastic parts, metal edge, glass inlay, which types affect laser absorption rate, ignition point, carbonization tendency, etc.), reflectivity (affecting laser power setting, preventing energy waste or light damage), thermal conductivity (determining heat accumulation risk and cooling strategy, for example, MDF heat conduction is low, and continuous processing heat overlap needs to be avoided), and absorption rate (determining initial engraving depth and energy efficiency, for example, solid wood absorbs well but is easy to carbonize, and needs to reduce frequency or increase scanning speed).

[0073] In this embodiment, the engraving part material data of the furniture is selected by the user in the furniture model design or pattern uploading stage, and the corresponding material characteristic parameter table is called from the database, so as to achieve the purpose of stable parameters and high furniture standardization when batch engraving furniture.

[0074] The mapping unit is used to receive the uploaded engraving pattern and virtually map it to the engraving part of the furniture, so as to obtain the target engraving pattern at the corresponding engraving part of the furniture.

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

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

[0077] The method for obtaining the working engraving region set comprises the following steps:

[0078] A1, for the engraving part of the furniture, the dividing unit sets n grid points (x, y), and extracts 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 engraving part material data includes density ρ(x,y), specific heat capacity C p (x,y), absorption rate α(x,y), and thermal conductivity k;

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

[0081] In the formula, η is the laser conversion efficiency; d is the material thickness of the engraving part under heating;

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

[0083] A2, the temperature rise prediction distribution diagram ΔT est (x,y) is regionally clustered and divided to obtain an initial engraving region set And the predicted temperature rise difference of each initial engraving region is within the tolerance range ±∈;

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

[0085] A3, the pattern is analyzed for structure, a line segment topology graph is established, and DFS or union set method is used to identify the continuous path P k of the pattern, the path P k includes main line segment, closed figure, stroke sequence, etc.;

[0086] And the dividing unit calculates whether each continuous path P k crosses multiple initial engraving regions

[0087] A4, for the initial engraving region The path P k , set its integrity priority L k ;

[0088] Subsequently, the boundary adjustment total cost value J(P k ) of the path P k ) is calculated, and the calculation formula is as follows:

[0089] J(P k ) = λ1·ΔT new + λ2·(1-L k ); wherein, ΔT new is the change value of the processing temperature rise in the initial engraving area after the path P k is incorporated into the initial engraving area;

[0090] λ1 is a weight factor of thermal balance, and the greater the value, the more attention is paid to thermal control;

[0091] λ2 is a weight of the continuity priority of the pattern, and the greater the value, the more attention is paid to the pattern not being fragmented;

[0092] If the path P k of a certain pattern crosses two initial engraving areas, then the two initial engraving areas are respectively incorporated into or The two boundary adjustment total cost values J(P k ) are respectively calculated, and the scheme with lower cost is selected for execution;

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

[0094] If the boundary adjustment total cost value J(P k ) is less than the cost threshold value, then the boundary of the corresponding initial engraving area is expanded inwardly / outwardly to merge the path;

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

[0096] A6, the initial engraving areas adjusted by the A5 step are outputted and integrated to form a final working engraving area set

[0097] The laser engraving module includes a plurality of groups of engraving components, and each group of engraving components is used for processing a group of working engraving areas with patterns;

[0098] The division unit sets a thermal risk threshold T th , and generates a thermal risk shielding mask map M(x, y) based on the thermal risk threshold T th ;

[0099]

[0100] M(x, y) = 1 represents that the unit area is a shielding part;

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

[0102] The division unit maps the pattern path P k to the carved part of the furniture, and then determines whether the path P k has any point coinciding with the part M(x, y) = 1.

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

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

[0105] The acquisition module collects the state of the working carving area that has been completed processing when the furniture switches the working carving area, including collecting the actual processing pattern image of the working area and the corresponding heat distribution map information, and uploading to the control module;

[0106] When the control module detects the actual processing pattern image collected, the system matches the position and compares the deviation between the image and the target carving pattern pattern mapped to the area in advance, 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 position matching and deviation comparison by the control module includes the following steps:

[0108] Z1, the control module randomly selects N detection points P1, P2,..., PN in the working carving area that has been completed processing. N , and the detection points correspond to the feature point coordinates in the target carving pattern pattern

[0109] The detection points selected in step Z1 by the processing module are preferentially feature structure points in the corresponding pattern path P k , including but not limited to:

[0110] Turning point: points with sharp direction changes in the pattern path, such as corner points and polyline nodes; prone to processing deviation, need accurate positioning;

[0111] End point: starting point or end point of the path, usually representing the start or end of the structure or the splicing point, and the deviation is easy to expose the overall pattern misalignment;

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

[0113] Curvature abrupt change point: A point where the curve changes drastically or reaches an extreme value, requiring high carving precision;

[0114] Closed path connection point: The connection point at the closed loop of a closed pattern, where closure failure or overlap misalignment is most likely to occur during processing;

[0115] Pattern pivot point: The midpoint or node of the main axis of the pattern, which affects the overall direction;

[0116] Decorative boundary points: located at the edge of the pattern or the outer outline, used to check 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 positions from the actual processed pattern image. Furthermore, 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 step Z3:

[0121] If each offset error E i If all values ​​are less than the preset offset error threshold, the detection passes.

[0122] If a certain offset error E i If the offset error is not less than the preset threshold, the control module selects the corresponding detection location P. i And using it as the center, identify the path P to which it belongs in the target pattern. k ;

[0123] And the processing module follows this path P k In the direction, several secondary inspection sites F1, F2, ..., F are selected in the preceding and following neighborhoods at preset fixed intervals. N And perform the same secondary offset error calculation as step Z2;

[0124] If, during the secondary offset error calculation, there is still an offset error at a certain secondary inspection location that is not less than the preset offset error threshold, the processing module determines that the completed engraving area is a local continuous processing offset abnormal area, and the processing module issues a warning message, prompting that manual review is required.

[0125] Meanwhile, 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 machining safety temperature threshold;

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

[0127] Temperature data extraction: Extract the temperature characteristic value corresponding to the working engraving area from the thermal distribution map information for calculating the average temperature;

[0128] Temperature judgment: Determine using the average temperature of the entire area;

[0129] Determination setting: Set by the user according to experience, support setting the determination temperature threshold in the following ways: material quality preset, real-time learning, or experience adjustment, etc.;

[0130] Time compensation: If the average temperature is close to the determination temperature threshold but has not yet met the machining conditions of the next group 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 machining working engraving area is less than the preset offset error threshold, and the current temperature is lower than the preset machining safety temperature threshold;

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

[0133] The above is only a preferred embodiment of the present application, and is not intended to limit the present application in any form. Although the present application has been disclosed as above with a preferred embodiment, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above disclosed technical content to obtain equivalent embodiments with equivalent changes, without departing from the scope of the technical solution of the present application. Any simple modification, equivalent change and modification of the above embodiments made in accordance with the technical essence of the present application shall still fall within the scope of the technical solution of the present application.

Claims

1. A furniture laser pattern engraving control system, comprising an engraving task division module, a control module, a collection module and a laser engraving module, characterized in that: the engraving task division module comprises: a processing information unit that obtains the material data of the engraved part of the furniture to be processed; a mapping unit that uploads the engraved pattern from the user and virtually maps it to the engraved part of the furniture, and obtains the target engraved pattern on the corresponding engraved part of the furniture; a division unit that generates a set of working engraved areas with temperature similarity based on the mapping position of the pattern and the material data of the engraved part corresponding to the mapping position; the laser engraving module comprises a plurality of engraving assemblies, each of which is used for pattern processing on a set of working engraved areas; the collection module collects the actual processing pattern image and the corresponding thermal distribution map information of the working engraved area that has been completed processing when the furniture switches the working engraved area, and uploads them to the control module; when the control module detects the collected actual processing pattern image, the system matches the image with the target engraved pattern pre-mapped to the area and compares the deviation, to determine whether the offset error between the processing pattern and the preset pattern is within the 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 engraved area is lower than the preset processing safety temperature threshold; if the offset error of the working engraved area that has been completed processing is less than the preset offset error threshold, and the current temperature is lower than the preset processing safety temperature threshold; then the control module starts the next set of engraving assemblies to process the next working engraved area.

2. The furniture laser engraving control system of claim 1, wherein, The method for obtaining the set of working engraved areas comprises the following steps: A1, for the engraved part of the furniture, the division unit sets n grid points (x, y), and extracts the engraved part material data, pattern density value D(x, y) and preset laser power P0 corresponding to each grid point (x, y); The engraved part material data includes density p(x, y), specific heat capacity C p (x, y), absorption rate a(x, y), thermal conductivity k; then build the predicted laser processing temperature rise data ΔT(x, y) of the engraved part: where η is the laser conversion efficiency; d is the material thickness of the engraved portion that is heated; The dividing unit integrates the laser processing temperature rise data ΔT(x, y) of each unit area to obtain a temperature rise prediction distribution map ΔT corresponding to the engraved part est (x, y); A2, temperature rise prediction distribution map ΔT est (x, y) are clustered to obtain an initial set of engraving regions And the predicted temperature rise difference of each initial engraving region is within a tolerance range ± ∈; A3, structure analysis is performed on the pattern, a line segment topology graph is established, and a continuous path P of the pattern is identified k ; And the dividing unit calculates each continuous path P k Whether to span multiple initial engraving areas A4. For the initial engraved region The path P of the border cut k The integrity priority L is set k ; The path P is then calculated k The total adjusted value of the boundaries; A5, compare the boundary adjustment total cost value with the preset cost threshold; If the boundary adjustment total generation value J(P k ) is less than the cost threshold, the boundary of the initial engraving region corresponding to the merging path is extended inwards / outwards. If the total adjusted value J(P k ) of the border is not less than the cost threshold, the border of the initial carving region is maintained; A6, output and integrate the initial engraving area adjusted in step A5 to form a final working engraving area set 3. The furniture laser engraving control system of claim 2, wherein, The partitioning unit sets a thermal risk threshold T th and the partitioning unit generates a thermal risk mask map M(x,y) based on the thermal risk threshold T th ​ wherein M(x, y) = 1 represents that the unit area is a shielding part; M(x, y) = 0 represents that the unit area is a processable part.

4. The furniture laser engraving control system of claim 3, wherein, The dividing unit maps the pattern path P k After mapping the pattern path P k to the carved part of the furniture, it determines whether there is any point of coincidence M(x, y) = 1. If there is an overlap, the division unit transmits the grid point (x, y) information of the part to the control module; the control module starts the preset cooling mechanism or power downshift when the laser engraving module processes the corresponding furniture part.

5. The furniture laser engraving control system of claim 1, wherein, The method for position matching and deviation comparison by the control module comprises the following steps: Z1, the control module randomly selects N detection positions P1, P2,..., P N , and the detection position corresponds to a feature point coordinate in the target engraving pattern Z2, the control module extracts actual point coordinates of the corresponding positions in the actual processing pattern image and the control module calculates the offset error of each feature point coordinate and the actual point coordinate; Z3, the control module determines the offset error E of each feature point coordinate and the actual point coordinate i whether it is less than a preset offset error threshold.

6. A furniture laser engraving control system according to claim 5, wherein, in step Z3: If each offset error E i is less than a preset offset error threshold, the detection is passed. If an offset error E i is not less than a preset offset error threshold, the control module selects a corresponding detection position P i and takes it as the center to identify a path P k to which it belongs in the target pattern. And the processing module along the path P k In the direction, in its front, rear neighborhood according to the preset fixed interval selects several secondary review sites F1, F2,... N And carries out the same secondary offset error calculation of Z2 step; if the offset error of the secondary recheck part is not less than the preset offset error threshold in the secondary offset error calculation, the processing module determines that the working engraved area that has been completed processing is a local continuity processing offset abnormal area, and the processing module issues a warning information.

7. The furniture laser engraving control system of claim 5, wherein, The detection site selected by the processing module in the Z1 step is preferably a feature point corresponding to the pattern path P in the Z2 step. k The detection site selected by the processing module in the Z1 step is preferably a feature point corresponding to the pattern path P in the Z2 step.

8. A method of controlling laser engraving of a furniture pattern, characterized by, The engraving control method adopts the engraving control system of any one of claims 1-7, and specifically comprises the following steps: S1, obtain the 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 carved pattern and the material data of the carved part corresponding thereto, generate a working carved area set with temperature similarity, and dynamically adjust the area boundary of the initial carved area according to the continuous path of the target carved pattern to obtain the working carved area set; S3, the control module controls the multiple groups of carved components in the laser carving module to process the patterns of the working carved areas in turn; S4, when the furniture switches the working carved area, the acquisition module acquires the state of the working carved area that has been completed processing, including the actual processing pattern image and the heat distribution map information of the area, and uploads them to the control module; S5, the control module compares the actual processing pattern image collected with the target carved pattern in position, judges whether the offset error is lower than the preset offset error threshold, and judges whether the current temperature of the area is lower than the preset processing safety temperature threshold at the same time; If both conditions are met, the next group of carved components is started to process the pattern of the next working carved area.

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