Laser intelligent marking method, system and equipment

Abstract

This invention discloses a laser intelligent scribing method, system, and device, comprising: acquiring image information of a target glass and constructing a coordinate system on the target glass; determining the scribing trajectory on the target glass based on the coordinate system; generating several continuous acquisition points on the target glass according to the scribing trajectory; and obtaining the transmittance corresponding to each acquisition point on the target glass. Based on the transparency variation of the scribing trajectory, this invention can divide the glass surface into multiple scribing areas, and match a corresponding transmittance value to each area. Based on a mathematical model establishing the relationship between transmittance, laser power, and scribing depth, the laser power is adjusted in real time to apply different laser energy to each scribing area, ensuring consistent scribing depth for each line.

Description

Technical Field

[0001] This invention relates to the field of laser marking technology, and in particular to a laser intelligent marking method, system and device. Background Technology

[0002] In the glass processing industry, due to differences in glass manufacturing processes, material composition, and surface treatment, the smoothness, scratches, bubbles, or defects on the surface of finished glass all affect light propagation. Therefore, the transmittance (light transmittance) of each piece of glass varies to some extent in different parts. This difference in transmittance directly affects the efficiency of the laser beam penetrating the glass, resulting in uneven transmission and distribution of laser energy during the laser scribing process.

[0003] Specifically, when a laser beam passes through glass, some of the laser energy is absorbed or reflected due to differences in transmittance across different parts of the glass, causing a decrease in the beam's propagation intensity on the glass. If the laser energy is uneven, it will result in inconsistent depth of the scribing trajectory, or even uneven scribing and unstable quality. However, since the laser scribing depth is directly related to energy density, if the laser power cannot be adjusted accurately and in real time, the consistency and uniformity of the scribing trajectory on the glass surface cannot be guaranteed, thus affecting subsequent processing quality, leading to low production efficiency and increased scrap rates. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a laser intelligent marking method, system, and device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] The first aspect of this invention provides a laser intelligent line marking method, comprising:

[0007] Image information of the target glass is acquired, and a coordinate system is constructed on the target glass. The trajectory of the line drawn on the target glass is determined based on the coordinate system on the target glass.

[0008] Several consecutive sampling points are generated on the target glass according to the scribing trajectory, and the transmittance corresponding to each sampling point on the target glass is obtained based on the sampling points.

[0009] The transparency change of the scribing trajectory on the target glass is obtained by measuring the transmittance. Then, several scribing areas are distinguished according to the transparency change of the scribing trajectory. Each scribing area is matched with a transmittance value.

[0010] Based on the transparency changes of the area to be scribed, a mathematical model is constructed to determine the transmittance of the area to be scribed, the scribing depth of the glass, and the laser power, so as to adjust the power intensity of the laser beam irradiating the target glass in real time.

[0011] Furthermore, methods for acquiring images of the target glass include:

[0012] Create a closed lighting environment, place the target glass behind a white translucent medium, ensure there are no gaps between the glass and the fabric, and place a uniform surface light source behind the target glass.

[0013] Images of a white, translucent medium were captured using a CCD, and the acquired images were preprocessed, including noise removal and contrast enhancement.

[0014] The captured image is converted into a grayscale image, so that the bright areas of the white translucent medium appear as higher grayscale values, while the darker parts of the glass area appear as lower grayscale values.

[0015] Set a threshold to convert a grayscale image into a binary image;

[0016] The contour of the target glass is extracted using edge detection based on the binary image.

[0017] Furthermore, methods for constructing a coordinate system on the target glass include:

[0018] The target glass profile is fitted using the minimum bounding rectangle of the profile, and the origin of the coordinate system is based on the diagonal intersection of the minimum bounding rectangle.

[0019] Furthermore, methods for constructing mathematical models include:

[0020] Obtain the raw laser energy power P0, and obtain the transmittance T of the area to be marked, where T is the average value measured at adjacent acquisition points on the target glass. Therefore, the actual laser energy power P entering the target glass is... T It can be represented as: ;

[0021] According to the line depth D X The laser energy power P reaching the target glass T Proportional, assuming the line depth D X With P T The following relationship exists between them: Where k is a constant;

[0022] Preset scribing depth D on the target glass target Therefore, D X =D target Then we have: And adjusted to: P T =D target / k, due to ,therefore, The relationship between the original energy power P0 of the laser and the transmittance T was obtained: .

[0023] Furthermore, the white light-transmitting medium is a diffuser plate, and the thickness of the diffuser plate is between 1mm and 3mm.

[0024] Furthermore, the uniform surface light source adopts an LED light panel.

[0025] Furthermore, a second aspect of the present invention provides a laser intelligent line drawing system, employing the laser intelligent line drawing method described in any one of the first aspects, comprising: an image acquisition module, wherein the image acquisition module comprises:

[0026] The light source unit is used to build a closed lighting environment, placing the target glass behind a white light-transmitting medium to ensure there are no gaps between the glass and the fabric, and placing a uniform surface light source behind the target glass.

[0027] The imaging unit uses a CCD to capture images of a white light-transmitting medium and preprocesses the acquired images, including noise removal and contrast enhancement.

[0028] A grayscale image unit is used to convert the captured image into a grayscale image, so that the bright areas of the white light-transmitting medium appear as higher grayscale values, while the darker parts of the glass area appear as lower grayscale values.

[0029] Binary image unit, the binary image unit is used to set a threshold to convert a grayscale image into a binary image;

[0030] An edge detection unit extracts the contour of the target glass based on the binary image using edge detection.

[0031] Furthermore, it also includes:

[0032] The coordinate system module is used to fit the target glass profile with the minimum bounding rectangle of the profile, and the origin of the coordinate system is based on the diagonal intersection point of the minimum bounding rectangle.

[0033] A line drawing trajectory module, which is used to determine the line drawing trajectory on the target glass according to the coordinate system on the target glass;

[0034] The acquisition module is used to generate a number of continuous acquisition points on the target glass according to the scribing trajectory, and to obtain the transmittance corresponding to each acquisition point on the target glass based on the acquisition points.

[0035] The module for the area to be scribed is used to obtain the transparency change of the scribing trajectory on the target glass based on the transmittance, and then distinguish several areas to be scribed based on the transparency change of the scribing trajectory.

[0036] The mathematical model module is used to construct a mathematical model of the transmittance of the area to be scribed, the glass scribing depth, and the laser power based on the transparency changes of the area to be scribed, so as to adjust the power intensity of the laser beam irradiating the target glass in real time.

[0037] Furthermore, a third aspect of the present invention provides a laser intelligent line marking device, comprising:

[0038] One or more master controllers;

[0039] A storage device on which one or more programs are stored;

[0040] When the one or more programs are executed by the one or more master controllers, the one or more master controllers implement a laser intelligent line drawing method as described in the first aspect.

[0041] The beneficial effects of this invention are as follows: By acquiring image information of the target glass and constructing a coordinate system, the problem of inconsistent scribing depth caused by uneven glass transmittance during laser scribing is solved. Specifically, several continuous acquisition points are set on the glass surface according to the scribing trajectory, and the transmittance change of each acquisition point is measured in real time. This allows for the identification of differences in the transparency of the scribing trajectory on the glass surface. Based on the transparency changes, this invention can divide the glass surface into multiple scribing areas and match a corresponding transmittance value to each area. By constructing a mathematical model between transmittance, laser power, and scribing depth, the laser power is adjusted in real time, applying different laser energy to each scribing area to ensure consistent scribing depth. This effectively improves the uniformity and stability of laser scribing, solves the processing quality fluctuations caused by differences in glass transmittance, and thus improves processing efficiency and product qualification rate. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the overall process of a laser intelligent line drawing method provided in an embodiment of the present invention;

[0043] Figure 2 This is a flowchart illustrating the acquisition of target glass images using a laser intelligent scribing method provided in an embodiment of the present invention. Detailed Implementation

[0044] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0045] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0046] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0047] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0048] Example

[0049] Reference Figure 1 and Figure 2 To address the issue of inconsistent scribing depth caused by uneven glass transmittance during laser scribing, this embodiment provides a laser intelligent scribing method, including:

[0050] Image information of the target glass is acquired, and a coordinate system is constructed on the target glass. The trajectory of the line drawn on the target glass is determined based on the coordinate system on the target glass.

[0051] Several consecutive sampling points are generated on the target glass according to the scribing trajectory, and the transmittance corresponding to each sampling point on the target glass is obtained based on the sampling points.

[0052] The transparency change of the scribing trajectory on the target glass is obtained by measuring the transmittance. Then, several scribing areas are distinguished according to the transparency change of the scribing trajectory. Each scribing area is matched with a transmittance value.

[0053] Based on the transparency changes of the area to be scribed, a mathematical model is constructed to determine the transmittance of the area to be scribed, the scribing depth of the glass, and the laser power, so as to adjust the power intensity of the laser beam irradiating the target glass in real time.

[0054] In this embodiment, in order to more clearly extract the outline of the target glass, the method for acquiring the target glass image includes:

[0055] Create a closed lighting environment and place the target glass behind the white translucent medium, ensuring there are no gaps between the glass and the fabric. Place a uniform surface light source behind the target glass. Since the light needs to pass through the target glass before reaching the white translucent medium, the target glass will absorb or reflect some of the light, and its light transmittance will be lower than that of the surrounding air. As a result, the area on the white translucent medium that is in contact with the target glass will appear dark due to the reduced light, while other areas that do not pass through the target glass will not have their light reduced and will appear bright.

[0056] Images of a white, translucent medium were captured using a CCD, and the acquired images were preprocessed, including noise removal and contrast enhancement.

[0057] The captured image is converted into a grayscale image, so that the bright areas of the white translucent medium appear as higher grayscale values, while the darker parts of the glass area appear as lower grayscale values.

[0058] A threshold is set to convert a grayscale image into a binary image. If the grayscale value of a pixel in a bright area is greater than or equal to the threshold, the pixel is set to white. If the grayscale value of a pixel in a dark area is less than the threshold, the pixel is set to black.

[0059] The contour of the target glass is extracted using edge detection based on the binary image. (In the prior art, edge detection includes the Sobel operator: detecting edges by calculating the horizontal and vertical gradients of the image, and Canny edge detection.)

[0060] In this embodiment, the method for constructing a coordinate system on the target glass includes:

[0061] The target glass profile is fitted using the minimum bounding rectangle of the profile, and the origin of the coordinate system is based on the diagonal intersection of the minimum bounding rectangle.

[0062] In this embodiment, the method for constructing the mathematical model includes:

[0063] Obtain the raw laser energy power P0, and obtain the transmittance T of the area to be marked, where T is the average value measured at adjacent acquisition points on the target glass. Therefore, the actual laser energy power P entering the target glass is... T It can be represented as: ;

[0064] According to the line depth D X The laser energy power P reaching the target glass T Proportional, assuming the line depth D X With P T The following relationship exists between them: Where k is a constant;

[0065] Preset scribing depth D on the target glass target Therefore, D X =D target Then we have: And adjusted to: P T =D target / k, due to ,therefore, The relationship between the original energy power P0 of the laser and the transmittance T was obtained: .

[0066] In this embodiment, the white light-transmitting medium is a diffuser plate (which can be made of acrylic or POM plastic material), and the thickness of the diffuser plate is 1mm-3mm.

[0067] In this embodiment, the uniform surface light source is an LED light panel, which can emit red or white light.

[0068] In this embodiment, the second aspect of the present invention provides a laser intelligent line drawing system, employing the laser intelligent line drawing method described in any one of the first aspects, comprising: an image acquisition module, wherein the image acquisition module includes:

[0069] The light source unit is used to build a closed lighting environment, placing the target glass behind a white light-transmitting medium to ensure there are no gaps between the glass and the fabric, and placing a uniform surface light source behind the target glass.

[0070] The imaging unit uses a CCD to capture images of a white light-transmitting medium and preprocesses the acquired images, including noise removal and contrast enhancement.

[0071] A grayscale image unit is used to convert the captured image into a grayscale image, so that the bright areas of the white light-transmitting medium appear as higher grayscale values, while the darker parts of the glass area appear as lower grayscale values.

[0072] Binary image unit, the binary image unit is used to set a threshold to convert a grayscale image into a binary image;

[0073] An edge detection unit extracts the contour of the target glass based on the binary image using edge detection.

[0074] This embodiment also includes:

[0075] The coordinate system module is used to fit the target glass profile with the minimum bounding rectangle of the profile, and the origin of the coordinate system is based on the diagonal intersection point of the minimum bounding rectangle.

[0076] A line drawing trajectory module, which is used to determine the line drawing trajectory on the target glass according to the coordinate system on the target glass;

[0077] The acquisition module is used to generate a number of continuous acquisition points on the target glass according to the scribing trajectory, and to obtain the transmittance corresponding to each acquisition point on the target glass based on the acquisition points.

[0078] The module for the area to be scribed is used to obtain the transparency change of the scribing trajectory on the target glass based on the transmittance, and then distinguish several areas to be scribed based on the transparency change of the scribing trajectory.

[0079] The mathematical model module is used to construct a mathematical model of the transmittance of the area to be scribed, the glass scribing depth, and the laser power based on the transparency changes of the area to be scribed, so as to adjust the power intensity of the laser beam irradiating the target glass in real time.

[0080] The specific working process of this invention is as follows:

[0081] (1) Acquire target glass image

[0082] First, a closed lighting environment is set up, with the target glass placed behind a white translucent medium, ensuring no gap between the glass and the fabric. A uniform surface light source is placed behind the target glass. An image of the white translucent medium is captured using a CCD, and the acquired image is preprocessed, including noise removal and contrast enhancement. The captured image is converted to a grayscale image, so that the bright areas of the white translucent medium appear with higher grayscale values, while the darker parts of the glass appear with lower grayscale values. A threshold is set to convert the grayscale image into a binary image. Edge detection, such as the Sobel operator or Canny edge detection, is used to extract the contour of the target glass based on the binary image.

[0083] (2) Construct a coordinate system on the target glass

[0084] The target glass profile is fitted using the minimum bounding rectangle of the profile, and the origin of the coordinate system is based on the diagonal intersection of the minimum bounding rectangle.

[0085] (3) Set up collection points

[0086] The required scribing trajectory on the target glass is determined using a coordinate system on the target glass. Then, n consecutive sampling points are generated on the target glass according to the scribing trajectory. The transmittance of each sampling point on the target glass is measured using a transmittance meter. Therefore, based on the average transmittance measured between adjacent sampling points, the scribing trajectory is divided into n-1 intervals, corresponding to n-1 areas to be scribed, and simultaneously matching n-1 transmittance values.

[0087] (4) Adjust the laser energy power according to the transparency changes of the interval segments of the drawn trajectory.

[0088] Obtain the raw laser energy power P0, and obtain the transmittance T of the area to be marked, where T is the average value measured at adjacent acquisition points on the target glass. Therefore, the actual laser energy power P entering the target glass is... T It can be represented as: ;

[0089] According to the line depth D X The laser energy power P reaching the target glass T Proportional, assuming the line depth D X With P T The following relationship exists between them: Where k is a constant;

[0090] Preset scribing depth D on the target glass target Therefore, D X =D target Then we have: And adjusted to: P T =D target / k, due to ,therefore, The relationship between the original energy power P0 of the laser and the transmittance T was obtained: .

[0091] In summary, based on transparency variations, this invention can divide the scribing trajectory on the glass surface into multiple scribing regions, and match a corresponding transmittance value to each region. According to the mathematical model constructed between transmittance, laser power, and scribing depth, the laser power is adjusted in real time to apply different laser energy to each scribing region to ensure that the depth of each scribing is consistent.

[0092] In particular, according to some embodiments of this disclosure, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, some embodiments of this disclosure include a computer program product comprising a computer program carried on a computer-readable medium, the computer program containing program code for performing the methods shown in the flowcharts.

[0093] It should be noted that, in some embodiments of this disclosure, the computer-readable medium may be a computer-readable signal medium or a computer-readable storage medium, or any combination thereof. A computer-readable storage medium may be, for example,—but not limited to—an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of a computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination thereof. In some embodiments of this disclosure, a computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, apparatus, or device. In some embodiments of this disclosure, a computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, carrying computer-readable program code. Such propagated data signals may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. The computer-readable signal medium can also be any computer-readable medium other than a computer-readable storage medium, which can send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device. The program code contained on the computer-readable medium can be transmitted using any suitable medium, including but not limited to: wires, optical fibers, RF (radio frequency), etc., or any suitable combination thereof. A third aspect of the invention provides a laser intelligent line drawing device, comprising: one or more master controllers; a storage device storing one or more programs; and when the one or more programs are executed by the one or more master controllers, causing the one or more master controllers to implement a laser intelligent line drawing method as described in the first aspect.

[0094] In some implementations, the processing system can communicate using any currently known or future-developed network protocol such as HTTP (Hypertext Transfer Protocol) and can interconnect with digital data communication (e.g., communication networks) of any form or medium. Examples of communication networks include local area networks (“LANs”), wide area networks (“WANs”), the Internet (e.g., the Internet of Things), and end-to-end networks (e.g., ad hoc end-to-end networks), as well as any currently known or future-developed networks.

[0095] The aforementioned computer-readable medium may be included in the aforementioned electronic device; or it may exist independently and not assembled into the electronic device. The aforementioned computer-readable medium carries one or more programs that, when executed by the electronic device, cause the electronic device to...

[0096] Computer program code for performing operations of some embodiments of this disclosure can be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, and C++, and conventional procedural programming languages ​​such as the "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network—including a local area network (LAN) or a wide area network (WAN)—or can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0097] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this disclosure. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0098] The functions described above herein can be performed at least in part by one or more hardware logic components. For example, exemplary types of hardware logic components that can be used, without limitation, include: Field Programmable Gate Arrays (FPGAs), Application-Specific Integrated Circuits (ASICs), Application Standard Products (ASSPs), System-on-Chip (SOCs), Complex Programmable Logic Devices (CPLDs), and so on. Specifically, the fourth aspect of this invention provides a computer-readable medium having a computer program stored thereon, wherein the program, when executed by a processor, implements a laser intelligent line drawing method as described in the first aspect.

[0099] The above description is merely a selection of preferred embodiments of this disclosure and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in the embodiments of this disclosure is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in the embodiments of this disclosure.

Claims

1. A laser intelligent line marking method, characterized in that, include: Image information of the target glass is acquired, and a coordinate system is constructed on the target glass. The trajectory of the line drawn on the target glass is determined based on the coordinate system on the target glass. Several consecutive sampling points are generated on the target glass according to the scribing trajectory, and the transmittance corresponding to each sampling point on the target glass is obtained based on the sampling points. The transparency change of the scribing trajectory on the target glass is obtained by measuring the transmittance. Then, several scribing areas are distinguished according to the transparency change of the scribing trajectory. Each scribing area is matched with a transmittance value. Based on the transparency changes of the area to be scribed, a mathematical model is constructed to determine the transmittance of the area to be scribed, the scribing depth of the glass, and the laser power, so as to adjust the power intensity of the laser beam irradiating the target glass in real time.

2. The laser intelligent line marking method according to claim 1, characterized in that, Methods for acquiring images of the target glass include: Create a closed lighting environment, place the target glass behind a white translucent medium, ensure there are no gaps between the glass and the fabric, and place a uniform surface light source behind the target glass. Images of a white, translucent medium were captured using a CCD, and the acquired images were preprocessed, including noise removal and contrast enhancement. The captured image is converted into a grayscale image, so that the bright areas of the white translucent medium appear as higher grayscale values, while the darker parts of the glass area appear as lower grayscale values. Set a threshold to convert a grayscale image into a binary image; The contour of the target glass is extracted using edge detection based on the binary image.

3. The laser intelligent line marking method according to claim 1, characterized in that, Methods for constructing a coordinate system on the target glass include: The target glass profile is fitted using the minimum bounding rectangle of the profile, and the origin of the coordinate system is based on the diagonal intersection of the minimum bounding rectangle.

4. The laser intelligent line marking method according to claim 1, characterized in that, Methods for constructing mathematical models include: Obtain the raw laser energy power P0, and obtain the transmittance T of the area to be marked, where T is the average value measured at adjacent acquisition points on the target glass. Therefore, the actual laser energy power P entering the target glass is... T It can be represented as: ; According to the line depth D X The laser energy power P reaching the target glass T Proportional, assuming the line depth D X With P T The following relationship exists between them: Where k is a constant; Preset scribing depth D on the target glass target Therefore, D X =D target Then we have: And adjusted to: P T =D target / k, due to ,therefore, The relationship between the original energy power P0 of the laser and the transmittance T was obtained: .

5. The laser intelligent line marking method according to claim 2, characterized in that, The white light-transmitting medium is a diffuser plate, and the thickness of the diffuser plate is 1mm-3mm.

6. The laser intelligent line marking method according to claim 2, characterized in that, The uniform surface light source uses an LED light panel.

7. A laser intelligent line marking system, characterized in that, The laser intelligent line drawing method according to any one of claims 1-6 includes an image acquisition module, wherein the image acquisition module comprises: The light source unit is used to build a closed lighting environment, placing the target glass behind a white light-transmitting medium to ensure there are no gaps between the glass and the fabric, and placing a uniform surface light source behind the target glass. The imaging unit uses a CCD to capture images of a white light-transmitting medium and preprocesses the acquired images, including noise removal and contrast enhancement. A grayscale image unit is used to convert the captured image into a grayscale image, so that the bright areas of the white light-transmitting medium appear as higher grayscale values, while the darker parts of the glass area appear as lower grayscale values. Binary image unit, the binary image unit is used to set a threshold to convert a grayscale image into a binary image; An edge detection unit extracts the contour of the target glass based on the binary image using edge detection.

8. The laser intelligent line marking system according to claim 7, characterized in that, Also includes: The coordinate system module is used to fit the target glass profile with the minimum bounding rectangle of the profile, and the origin of the coordinate system is based on the diagonal intersection point of the minimum bounding rectangle. A line drawing trajectory module, which is used to determine the line drawing trajectory on the target glass according to the coordinate system on the target glass; The acquisition module is used to generate a number of continuous acquisition points on the target glass according to the scribing trajectory, and to obtain the transmittance corresponding to each acquisition point on the target glass based on the acquisition points. The module for the area to be scribed is used to obtain the transparency change of the scribing trajectory on the target glass based on the transmittance, and then distinguish several areas to be scribed based on the transparency change of the scribing trajectory. The mathematical model module is used to construct a mathematical model of the transmittance of the area to be scribed, the glass scribing depth, and the laser power based on the transparency changes of the area to be scribed, so as to adjust the power intensity of the laser beam irradiating the target glass in real time.

9. A laser intelligent line marking device, characterized in that, include: One or more master controllers; A storage device on which one or more programs are stored; When the one or more programs are executed by the one or more master controllers, the one or more master controllers implement a laser intelligent line drawing method as described in any one of claims 1 to 6.

Images