A method and device for determining the distribution of air suction holes of a printed air suction platform, and an electronic device

Abstract

The embodiment of the specification discloses a method and device for determining the distribution of suction holes of a printing suction platform and electronic equipment, wherein the diameter of the suction hole is determined according to the medium characteristics of a paper on the suction platform; the opening rate of the suction platform is calculated by force analysis on the paper; the initial distribution of the suction hole on the suction platform is determined by using a screening algorithm according to the diameter of the suction hole and the opening rate; and the position distribution of the suction hole on the suction platform is determined by optimizing the initial distribution of the suction hole on the suction platform.

Description

Technical Field

[0001] The embodiments in this specification relate to the field of printing equipment technology, and in particular to a method, apparatus and electronic device for determining the distribution of suction holes in a printing suction platform. Background Technology

[0002] During the printing process, equipment typically uses a platform to transport or support the printing substrate. To prevent slippage or movement of the printing media during transmission, the platform usually has a suction device to ensure the media adheres tightly to the platform panel. The suction platform device in a digital printing machine for paper products includes the suction platform and its mounting assembly. The suction platform generates negative pressure using a fan, utilizing this principle to attract and tightly adhere the fabric to the platform, preventing the paper from bunching or shaking after ink absorption. Current suction holes are typically designed in a grid pattern or evenly spaced arrangement. The negative pressure device draws air out of the circular suction chamber, thus adsorbing the printing substrate onto the suction platform surface. Summary of the Invention

[0003] In view of this, the embodiments of this specification provide a method, apparatus and electronic device for determining the distribution of suction holes in a printing suction platform, which solves the problem that the arrangement of suction holes in the prior art can only rely on market experience and lacks specificity and precision.

[0004] The embodiments in this specification adopt the following technical solutions:

[0005] This specification provides an embodiment of a method for determining the distribution of suction holes in a printing suction platform, including:

[0006] The aperture of the suction holes is determined based on the media characteristics of the paper on the suction platform.

[0007] The porosity of the suction platform is calculated by performing stress analysis on the paper.

[0008] Based on the aperture and opening ratio of the suction holes, the initial distribution of the suction holes on the suction platform is determined using a meshing algorithm;

[0009] The initial distribution of the suction holes on the suction platform is optimized to determine the positional distribution of the suction holes on the suction platform.

[0010] This specification also provides an embodiment of a device for determining the distribution of suction holes in a printing suction platform, comprising:

[0011] The aperture determination module determines the aperture of the suction holes based on the media characteristics of the paper on the suction platform.

[0012] The calculation module calculates the opening ratio of the suction platform by performing stress analysis on the paper;

[0013] The initial distribution determination module determines the initial distribution of the suction holes on the suction platform using a meshing algorithm based on the hole diameter and the opening ratio of the suction holes.

[0014] The optimization module optimizes the initial distribution of the suction holes on the suction platform and determines the positional distribution of the suction holes on the suction platform.

[0015] This specification also provides an electronic device, including at least one processor and a memory, wherein the memory stores a program and is configured to have at least one processor perform the following steps:

[0016] The aperture of the suction holes is determined based on the media characteristics of the paper on the suction platform.

[0017] The porosity of the suction platform is calculated by performing stress analysis on the paper.

[0018] Based on the aperture and opening ratio of the suction holes, the initial distribution of the suction holes on the suction platform is determined using a meshing algorithm;

[0019] The initial distribution of the suction holes on the suction platform is optimized to determine the positional distribution of the suction holes on the suction platform.

[0020] The above-described at least one technical solution used in the embodiments of this specification can achieve the following beneficial effects:

[0021] Based on the media characteristics of the selected paper, the aperture of the suction holes is determined. The paper is subjected to stress analysis to calculate the opening ratio of the suction platform. Based on the aperture and opening ratio, the initial distribution of the suction holes on the suction platform is determined using a screen algorithm. The initial distribution is further optimized to determine the positional distribution of the suction holes on the suction platform.

[0022] By using precise algorithms to calculate and determine the positional distribution of the suction holes on the suction platform, the uniformity of the suction hole array per unit area can be ensured, resulting in better ink-fabrication and guaranteeing printing quality and efficiency. Adjustments and improvements can also be made based on the design goals of the suction holes to adapt to the needs of different suction platforms and improve the accuracy of the suction hole positional distribution. Furthermore, through the design of the halftone algorithm, the regular and uniform distribution of the suction holes is achieved, improving the suction effect and stability of the suction platform, and optimizing shadow effects, void defects, and eliminating the influence of tiny suction holes formed by incomplete evaporation during the heat transfer process. Attached Figure Description

[0023] The accompanying drawings, which are included to provide a further understanding of the embodiments of this specification and form part of the embodiments of this specification, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0024] Figure 1 A flowchart illustrating a method for determining the distribution of suction holes in a printing suction platform, provided as an embodiment of this specification.

[0025] Figure 2 A flowchart illustrating the specific application of the screen-adding algorithm in a method for determining the distribution of suction holes in a printing suction platform, as provided in an embodiment of this specification.

[0026] Figure 3 A schematic diagram of the suction hole array obtained by the method for determining the suction hole distribution of the printing suction platform provided in the embodiments of this specification;

[0027] Figure 4 for Figure 3 A schematic diagram of part A in the middle;

[0028] Figure 5 This is a schematic diagram of the structure of a device for determining the distribution of suction holes in a printing suction platform, provided in an embodiment of this specification.

[0029] Figure 6 The embodiments provided in this specification correspond to Figure 1 A schematic diagram of the structure of a device for determining the distribution of suction holes in a printing suction platform. Detailed Implementation

[0030] Generally, most of the suction holes on the market are arranged in a conventional way on the suction platform, usually in a grid pattern or with equal spacing. Moreover, the market lacks a precise algorithm to determine the appropriate suction force, and can only rely on market experience, which lacks specificity and precision.

[0031] For example, in the prior art, there is a design for the suction hole that is divided into multiple suction channels. The small suction channels in the vertical direction are combined to form a wave shape to cover the entire printing area. Although this effectively avoids the phenomenon of tufting, the excessive number of pores can lead to uneven suction and the appearance of depressions.

[0032] In addition, with the continuous advancement of modern manufacturing and the increasing thinness of paper, the uneven distribution of heat conduction and pressure during the heat transfer process causes the heat transfer paper to generate high heat and pressure in the area in contact with the fabric, which in turn creates shadows on certain areas of the fabric surface. Furthermore, the incomplete evaporation of the heat transfer agent can also form bubbles or tiny air suction holes on the fabric, leading to problems such as the air suction holes being magnified or highlighted during the heat transfer process.

[0033] Therefore, this specification provides a method, apparatus, and electronic device for determining the distribution of suction holes on a printing suction platform. Based on the media characteristics of the selected paper, the aperture of the suction holes is determined, the paper is subjected to stress analysis to calculate the open area ratio of the suction platform, and based on the aperture and open area ratio, a screen algorithm is used to determine the initial distribution of the suction holes on the suction platform. The initial distribution is further optimized, thereby determining the positional distribution of the suction holes on the suction platform.

[0034] By using precise algorithms to calculate and determine the positional distribution of the suction holes on the suction platform, the uniformity of the suction hole array per unit area can be ensured, resulting in better ink-fabrication and guaranteeing printing quality and efficiency. Adjustments and improvements can also be made based on the design goals of the suction holes to adapt to the needs of different suction platforms and improve the accuracy of the suction hole positional distribution. Furthermore, through the design of the halftone algorithm, the regular and uniform distribution of the suction holes is achieved, improving the suction effect and stability of the suction platform, and optimizing shadow effects, void defects, and eliminating the influence of tiny suction holes formed by incomplete evaporation during the heat transfer process.

[0035] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments in this specification, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments in this specification without creative effort are within the scope of protection of this application.

[0036] The technical solutions provided in the various embodiments of this specification are described in detail below with reference to the accompanying drawings.

[0037] like Figure 1 The diagram shown is a flowchart illustrating a method for determining the distribution of suction holes in a printing suction platform according to an embodiment of this specification.

[0038] S101: Determine the aperture of the suction holes based on the media characteristics of the paper on the suction platform;

[0039] S103: Calculate the porosity of the suction platform by performing stress analysis on the paper;

[0040] S105: Based on the aperture of the suction holes and the opening ratio, the initial distribution of the suction holes on the suction platform is determined using a meshing algorithm;

[0041] S107: Optimize the initial distribution of the suction holes on the suction platform to determine the positional distribution of the suction holes on the suction platform.

[0042] In the embodiments of this specification, for step S101, the diameter of the corresponding suction hole is different for different types of paper. Table 1 below shows the diameter of the suction hole corresponding to different types of paper.

[0043] Table 1. List of suction hole diameters corresponding to different types of paper.

[0044] Media characteristics of paper Diameter of the air intake hole (mm) Thin, soft copy paper (approximately 80 gsm) 1-2 Thicker, more rigid cardstock (approximately 200 gsm) 3-4 Medium-weight and soft printing paper (approximately 70-90 gsm) 2-3

[0045] GSM (Gramme / Square Meter) is a unit used to describe paper standards. It is an international unit of paper weight, meaning grams per square meter, and is a professional term used in the paper industry. Generally speaking, the higher the GSM value, the thicker the paper. For example, "90gsm" means that a sheet of paper weighs 90 grams per square meter.

[0046] In this way, the diameter of the suction hole corresponding to the selected paper can be determined based on the medium characteristics of the selected paper.

[0047] Furthermore, for step S103, calculating the porosity of the suction platform by performing stress analysis on the paper can specifically include:

[0048] Based on the lateral force on the paper and the external disturbance force, the range of static friction force is determined when the paper is adsorbed.

[0049] The range of the porosity is calculated based on the range of the static friction force.

[0050] In the embodiments described in this specification, external interference force specifically refers to the wind force generated by the carriage carrying the printhead during its movement. This external interference force can cause the paper to shake. Additionally, the paper softens after inkjet printing, and its strength changes slightly.

[0051] The range of static friction is calculated using Newton's second law and the principles of statics.

[0052] Because changes in the area of ​​the suction holes directly affect the speed and flow rate of the gas passing through them, an increase in the area of ​​the suction holes will correspondingly increase the force on the platform; conversely, a decrease in the area of ​​the suction holes will correspondingly decrease the force on the platform. Therefore, the range of static friction can be determined based on the lateral force on the paper and external disturbance forces, and then the range of open area ratio can be calculated based on the range of static friction.

[0053] Furthermore, the range of static friction is determined under the condition that the paper is adsorbed without shifting and that indentation is permissible. Here, indentation refers to a depression in the paper at the suction hole location; specifically, the indentation distance can be 0.1 mm.

[0054] The static friction force calculated by the force is compared with the interference force during the inkjet process to ensure that the static friction force is greater than the external interference force, thus preventing the paper from shaking or moving during the inkjet process.

[0055] Furthermore, based on the aperture of the suction holes and the opening ratio, a meshing algorithm is used to determine the initial distribution of the suction holes on the suction platform, which may specifically include:

[0056] Calculate the number of suction holes on the suction platform based on the diameter of the suction holes and the opening ratio;

[0057] Based on the number of suction holes, the initial distribution of the suction holes on the suction platform is determined using a meshing algorithm.

[0058] In the embodiments of this specification, the method for calculating the number of air intake holes is as follows:

[0059] Assuming the radius of the suction hole is r, the area of ​​a single suction hole is: S = πr 2 Therefore, the number of air intake holes M = A / S, where A is the area of ​​the opening.

[0060] In the embodiments of this specification, the initial distribution of the suction holes on the suction platform is determined using a meshing algorithm, which may specifically include:

[0061] The air suction platform is divided into a grid;

[0062] The grid is initialized to assign an initial air intake hole in each grid.

[0063] Based on the aperture, opening ratio, and number of the air intake holes, a similarity measurement strategy corresponding to the air intake holes is determined;

[0064] Based on the similarity measurement strategy, it is determined whether to merge or split adjacent grids to obtain the merging and splitting results;

[0065] Based on the merged and segmented results, the initial distribution of the suction holes on the suction platform is determined.

[0066] In the embodiments described in this specification, the size of the grid is determined based on the diameter of the air intake hole and the opening ratio of the air intake hole.

[0067] In the embodiments of this specification, the similarity measurement strategy is a method or strategy for measuring the degree of similarity between two objects, where the two objects can refer to the air intake and the mesh.

[0068] In specific application scenarios, the similarity measurement strategy for determining the air intake hole can include at least one of the following methods:

[0069] When two adjacent air intakes are located on a grid, the similarity between the two adjacent air intakes is the Euclidean distance, which is the sum of the absolute values ​​of the differences between the coordinate values ​​of the air intakes.

[0070] When the coordinates of the air intake holes are known and the Euclidean distance exists, the similarity between two adjacent air intake holes is the straight-line distance between the two air intake holes;

[0071] When the air intake hole is identified by a vector, the similarity between two adjacent air intake holes is the cosine value between the vectors of the air intake holes;

[0072] When the air intake is identified by a set of elements, the similarity between two adjacent air intakes is the ratio of the intersection to the union of the air intakes.

[0073] Furthermore, determining the initial distribution of the suction holes on the suction platform can specifically include:

[0074] Using the Euclidean space model as a mathematical model, the positions of the suction holes on the suction platform are arranged according to the meshing algorithm to obtain the initial distribution of the suction holes on the suction platform.

[0075] In specific application scenarios, using the Euclidean space model as a mathematical model, the positions of the suction holes on the suction platform are arranged according to the mesh algorithm, which may specifically include the following steps:

[0076] Step 1: Determine the specific dimensions of the suction platform, including its length and width, to provide space for subsequent grid division.

[0077] Step 2: Divide the grid. Set up a two-dimensional grid on the suction platform. This grid divides the entire platform into small rectangular cells (two-dimensional). Each cell represents a possible suction hole location.

[0078] Step 3: Use a mesh algorithm to determine the location of the air intake holes. Select a certain number of points in the mesh as the initial location of the air intake holes.

[0079] Specifically, the initial position can be selected from each row or column of the grid, or it can be achieved by uniformly selecting points in the grid.

[0080] Step 4: Adjust the position of the air intake holes. Specifically, the position of the air intake holes can be optimized by considering the similarity between adjacent air intake holes.

[0081] In the embodiments described in this specification, each air intake hole corresponds to a cell in the grid.

[0082] In a specific application embodiment, based on the similarity measurement strategy, determining whether to merge or split adjacent grids may specifically include:

[0083] When the similarity between adjacent grids exceeds a preset threshold, the adjacent grids are merged into one grid.

[0084] When the similarity between adjacent grids is lower than the preset threshold, the grid is divided into multiple sub-grids.

[0085] In the embodiments of this specification, the preset threshold may specifically refer to the maximum tolerable distance of the vertical distance from the air intake to the four sides of the grid, defined by a similarity measurement strategy according to the design requirements of the air intake.

[0086] For example, the Euclidean distance can be set as a preset threshold to analyze the positions of two adjacent air intakes on a grid structure. When the similarity of the air intake positions is lower than the preset threshold, it means that the air intake position is too close to the grid edge, which does not meet the requirements of the air intake design. In this case, the position of the air intake is moved to a position higher than the preset threshold to increase the uniformity of the air intakes.

[0087] In specific application scenarios, when the similarity between adjacent grids is lower than the preset threshold, the grid is divided into multiple sub-grids, and the sub-grids are uniformly cut.

[0088] Furthermore, for step S107, optimizing the initial distribution of the suction holes on the suction platform can specifically include:

[0089] According to the similarity measurement strategy, the grid corresponding to the initial distribution of the air intake holes is repeatedly merged or divided to iteratively optimize the initial distribution of the air intake holes on the air intake platform.

[0090] Based on the design goals and actual needs of the suction holes, the mesh merging or splitting steps were performed multiple times to adjust the distribution of the suction holes on the suction platform through iterative optimization. After each iteration of optimization, the design effect of the suction holes was analyzed and evaluated, and adjustments and improvements were made as needed.

[0091] In the embodiments of this specification, analyzing and evaluating the design effect of the suction holes can specifically refer to actually installing the suction holes and placing them in the printing equipment, and then analyzing and evaluating whether the distribution of the suction holes meets the actual requirements by observing the adsorption effect on the paper.

[0092] This specification provides an embodiment of a method for determining the distribution of suction holes in a printing suction platform. Based on the medium characteristics of the selected paper, the aperture of the suction holes is determined. The paper is subjected to stress analysis to calculate the open area ratio of the suction platform. Based on the aperture and open area ratio, a screen algorithm is used to determine the initial distribution of the suction holes on the suction platform. The initial distribution is further optimized to determine the positional distribution of the suction holes on the suction platform.

[0093] By using precise algorithms to calculate and determine the positional distribution of the suction holes on the suction platform, the uniformity of the suction hole array per unit area can be ensured, resulting in better ink-fabrication and guaranteeing printing quality and efficiency. Adjustments and improvements can also be made based on the design goals of the suction holes to adapt to the needs of different suction platforms and improve the accuracy of the suction hole positional distribution. Furthermore, through the design of the halftone algorithm, the regular and uniform distribution of the suction holes is achieved, improving the suction effect and stability of the suction platform, and optimizing shadow effects, void defects, and eliminating the influence of tiny suction holes formed by incomplete evaporation during the heat transfer process.

[0094] It should be noted that the above-described method for determining the distribution of suction holes in the printing suction platform is merely a specific application example and does not limit the scope of the embodiments in this specification. Other specific embodiments may also be included, which will not be elaborated here.

[0095] Based on the same inventive idea Figure 2 This is a flowchart illustrating the specific implementation process of the screen-adding algorithm in a method for determining the distribution of suction holes in a printing suction platform provided in an embodiment of this specification.

[0096] S201: Input the parameters of the air intake hole;

[0097] In the embodiments described in this specification, the parameters may include the diameter of the air intake hole, the opening ratio, etc., and are not specifically limited here.

[0098] S203: Divide the suction platform into a grid according to the parameters of the suction holes;

[0099] Then the meshing algorithm is initialized, which may include the following steps S205 and S207:

[0100] S205: Assign an initial air intake hole to each of the divided grids;

[0101] S207: Determine the similarity measurement strategy corresponding to the air intake hole;

[0102] Next, the grid is merged or divided according to the similarity measurement strategy, which may specifically include the following steps S209 to S213:

[0103] S209: Calculate the vertical distance from the position of the suction hole to the grid where the suction hole is located, which is to calculate the similarity between each adjacent suction hole;

[0104] The vertical distance is also known as the Euclidean distance.

[0105] S211: Determine whether the vertical distance (similarity between adjacent air intakes) is equal to the preset threshold to obtain a first determination result;

[0106] S213: If the first judgment result is that the vertical distance is not equal to the preset threshold, then move the position of the air intake hole;

[0107] In the embodiments described in this specification, moving the position of the air intake hole may specifically include:

[0108] If the first determination result is that the vertical distance exceeds the preset threshold, then the adjacent grids are merged;

[0109] If the first determination result is that the vertical distance does not exceed the preset threshold, then the adjacent grid is divided into multiple sub-grids.

[0110] S215: Repeat steps S209 to S213 to optimize the distribution of the air intake holes;

[0111] S217: When the vertical distance is equal to the preset threshold, output the distribution of the air intake holes.

[0112] Furthermore, based on the same inventive concept, this specification also provides specific application examples of the method for determining the distribution of suction holes in a printing suction platform.

[0113] On an 1800*500mm suction platform, using 110gsm paper as input, the diameter of the suction hole is set to 3mm.

[0114] Based on the lateral force and external interference, it was determined that under the condition that the paper is adsorbed without shifting and a 0.1mm indentation is allowed, the porosity range is between 5% and 12%.

[0115] The specific calculation of the opening ratio requires the flow meter to test the gas flow rate during the ventilation process. Based on the allowable concavity range of the paper, the gas flow rate range is determined. The calculation of the static friction force caused by external wind interference is also determined based on industry experience.

[0116] Considering the perforation process, we aim to minimize perforation while ensuring sufficient suction power. Excessive perforation rate can negatively impact the perforation process and subsequent maintenance, while insufficient perforation rate can cause unstable paper adsorption. Therefore, based on functional requirements, manufacturing feasibility, aesthetics, and past experience, the perforation rate of the suction platform is set at 6%.

[0117] Using the Euclidean space model as the mathematical model, the distance from the center point of the suction hole to the four sides of the grid is used as a threshold to determine whether the suction hole is located at the center of the grid. The hole positions are then arranged in the suction platform using a meshing algorithm. In a specific application embodiment, the threshold can be set to 4mm.

[0118] like Figure 3 The diagram shown is a schematic diagram of the suction hole array obtained by the method for determining the suction hole distribution of the printing suction platform provided in the embodiments of this specification.

[0119] like Figure 4 As shown Figure 3 A schematic diagram of part A in the middle.

[0120] Based on the same inventive concept, embodiments of this specification also provide apparatus corresponding to the above-described methods.

[0121] like Figure 5 The diagram shown is a structural schematic of a device for determining the distribution of suction holes in a printing suction platform, as provided in an embodiment of this specification.

[0122] The device for determining the distribution of suction holes in the printing suction platform may include:

[0123] The aperture determination module 501 determines the aperture of the suction hole based on the media characteristics of the paper on the suction platform.

[0124] The calculation module 502 calculates the opening ratio of the suction platform by performing a stress analysis on the paper.

[0125] The initial distribution determination module 503 determines the initial distribution of the suction holes on the suction platform based on the aperture and the opening ratio of the suction holes using a meshing algorithm.

[0126] The optimization module 504 optimizes the initial distribution of the suction holes on the suction platform and determines the positional distribution of the suction holes on the suction platform.

[0127] based on Figure 5 The embodiments of this specification also provide some specific implementations of the device, which will be described below.

[0128] Optionally, the porosity of the suction platform is calculated by performing a stress analysis on the paper, including:

[0129] Based on the lateral force on the paper and the external disturbance force, the range of static friction force is determined when the paper is adsorbed.

[0130] The range of the porosity is calculated based on the range of the static friction force.

[0131] Optionally, the range of static friction is determined when the paper is held in place without shifting and with dents allowed.

[0132] Optionally, the indentation distance of the paper is 0.1 mm.

[0133] Optionally, based on the aperture of the suction holes and the opening ratio, a meshing algorithm is used to determine the initial distribution of the suction holes on the suction platform, including:

[0134] Calculate the number of suction holes on the suction platform based on the diameter of the suction holes and the opening ratio;

[0135] Based on the number of suction holes, the initial distribution of the suction holes on the suction platform is determined using a meshing algorithm.

[0136] Optionally, the initial distribution of the suction holes on the suction platform is determined using a meshing algorithm, including:

[0137] The air suction platform is divided into a grid;

[0138] The grid is initialized to assign an initial air intake hole in each grid.

[0139] Based on the aperture, opening ratio, and number of the air intake holes, a similarity measurement strategy corresponding to the air intake holes is determined;

[0140] Based on the similarity measurement strategy, it is determined whether to merge or split adjacent grids to obtain the merging and splitting results;

[0141] Based on the merged and segmented results, the initial distribution of the suction holes on the suction platform is determined.

[0142] Optionally, the size of the grid can be determined based on the diameter and density of the air intake holes.

[0143] Optionally, the similarity measurement strategy for determining the air intake hole may include at least one of the following methods:

[0144] When two adjacent air intakes are located on a grid, the similarity between the two adjacent air intakes is the Euclidean distance, which is the sum of the absolute values ​​of the differences between the coordinate values ​​of the air intakes.

[0145] When the coordinates of the air intake holes are known and the Euclidean distance exists, the similarity between two adjacent air intake holes is the straight-line distance between the two air intake holes;

[0146] When the air intake hole is identified by a vector, the similarity between two adjacent air intake holes is the cosine value between the vectors of the air intake holes;

[0147] When the air intake is identified by a set of elements, the similarity between two adjacent air intakes is the ratio of the intersection to the union of the air intakes.

[0148] Optionally, determining the initial distribution of the suction holes on the suction platform includes:

[0149] Using the Euclidean space model as a mathematical model, the positions of the suction holes on the suction platform are arranged according to the meshing algorithm to obtain the initial distribution of the suction holes on the suction platform.

[0150] Optionally, based on the similarity measurement strategy, determining whether to merge or split adjacent grids includes:

[0151] When the similarity between adjacent grids exceeds a preset threshold, the adjacent grids are merged into one grid.

[0152] When the similarity between adjacent grids is lower than the preset threshold, the grid is divided into multiple sub-grids.

[0153] Optionally, the initial distribution of the suction holes on the suction platform can be optimized, which may specifically include:

[0154] According to the similarity measurement strategy, the grid corresponding to the initial distribution of the air intake holes is repeatedly merged or divided to iteratively optimize the initial distribution of the air intake holes on the air intake platform.

[0155] This specification provides an embodiment of a comprehensive disaster early warning model construction device for grassroots areas. Based on the media characteristics of the selected paper, the aperture of the suction holes is determined. The paper is subjected to stress analysis to calculate the opening ratio of the suction platform. Based on the aperture and opening ratio, a meshing algorithm is used to determine the initial distribution of the suction holes on the suction platform. The initial distribution is further optimized to determine the positional distribution of the suction holes on the suction platform.

[0156] By using precise algorithms to calculate and determine the positional distribution of the suction holes on the suction platform, the uniformity of the suction hole array per unit area can be ensured, resulting in better ink-fabrication and guaranteeing printing quality and efficiency. Adjustments and improvements can also be made based on the design goals of the suction holes to adapt to the needs of different suction platforms and improve the accuracy of the suction hole positional distribution. Furthermore, through the design of the halftone algorithm, the regular and uniform distribution of the suction holes is achieved, improving the suction effect and stability of the suction platform, and optimizing shadow effects, void defects, and eliminating the influence of tiny suction holes formed by incomplete evaporation during the heat transfer process.

[0157] Based on the same inventive concept, embodiments of this specification also provide devices corresponding to the above methods.

[0158] Figure 6 The embodiments provided in this specification correspond to Figure 1 A schematic diagram of a device for determining the distribution of suction holes in a printing suction platform. (See diagram below.) Figure 6 As shown, device 600 may include:

[0159] At least one processor 610; and,

[0160] Memory 630 communicatively connected to the at least one processor; wherein,

[0161] The memory 630 stores instructions 620 that can be executed by the at least one processor 610, the instructions being executed by the at least one processor 610 to enable the at least one processor 610 to:

[0162] The aperture of the suction holes is determined based on the media characteristics of the paper on the suction platform.

[0163] The porosity of the suction platform is calculated by performing stress analysis on the paper.

[0164] Based on the aperture and opening ratio of the suction holes, the initial distribution of the suction holes on the suction platform is determined using a meshing algorithm;

[0165] The initial distribution of the suction holes on the suction platform is optimized to determine the positional distribution of the suction holes on the suction platform.

[0166] Other functions of the processor can be found in the above embodiments, and will not be repeated here.

[0167] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on its differences from other embodiments. In particular, for... Figure 6As the device shown is basically similar to the method embodiment, the description is relatively simple, and relevant parts can be found in the description of the method embodiment.

[0168] In the 1990s, improvements to a technology could be clearly distinguished as either hardware improvements (e.g., improvements to the circuit structure of diodes, transistors, switches, etc.) or software improvements (e.g., improvements to the methodology). However, with technological advancements, many improvements to the methodology today can be considered direct improvements to the hardware circuit structure. Designers almost always obtain the corresponding hardware circuit structure by programming the improved methodology into the hardware circuit. Therefore, it cannot be said that an improvement to the methodology cannot be implemented using a hardware physical module. For example, a Programmable Logic Device (PLD) (e.g., a Field Programmable Gate Array (FPGA)) is such an integrated circuit whose logic function is determined by the user programming the device. Designers can program a digital system themselves to "integrate" it onto a PLD, without needing chip manufacturers to design and manufacture dedicated integrated circuit chips. Furthermore, nowadays, instead of manually manufacturing integrated circuit chips, this programming is mostly implemented using "logic compiler" software. Similar to the software compiler used in program development, the original code before compilation must also be written in a specific programming language, called a Hardware Description Language (HDL). There are many HDLs, such as ABEL (Advanced Boolean Expression Language), AHDL (Altera Hardware Description Language), Confluence, CUPL (Cornell University Programming Language), HDCal, JHDL (Java Hardware Description Language), Lava, Lola, MyHDL, PALASM, and RHDL (Ruby Hardware Description Language). Currently, the most commonly used are VHDL (Very-High-Speed ​​Integrated Circuit Hardware Description Language) and Verilog. Those skilled in the art should also understand that by simply performing some logic programming on the method flow using one of these hardware description languages ​​and programming it into an integrated circuit, the hardware circuit implementing the logical method flow can be easily obtained.

[0169] The controller can be implemented in any suitable manner. For example, it can take the form of a microprocessor or processor and a computer-readable medium storing computer-readable program code (e.g., software or firmware) executable by the (micro)processor, logic gates, switches, application-specific integrated circuits (ASICs), programmable logic controllers, and embedded microcontrollers. Examples of controllers include, but are not limited to, the following microcontrollers: ARC 625D, Atmel AT91SAM, Microchip PIC18F26K20, and Silicon Labs C8051F320. A memory controller can also be implemented as part of the control logic of the memory. Those skilled in the art will also recognize that, in addition to implementing the controller in purely computer-readable program code form, the same functionality can be achieved by logically programming the method steps to make the controller take the form of logic gates, switches, application-specific integrated circuits, programmable logic controllers, and embedded microcontrollers. Therefore, such a controller can be considered a hardware component, and the means included therein for implementing various functions can also be considered as structures within the hardware component. Alternatively, the means for implementing various functions can be considered as both software modules implementing the method and structures within the hardware component.

[0170] The systems, devices, modules, or units described in the above embodiments can be implemented by computer chips or entities, or by products with certain functions. A typical implementation device is a computer. Specifically, a computer can be, for example, a personal computer, laptop computer, cellular phone, camera phone, smartphone, personal digital assistant, media player, navigation device, email device, game console, tablet computer, wearable device, or any combination of these devices.

[0171] For ease of description, the above devices are described separately by function as various units. Of course, in implementing this application, the functions of each unit can be implemented in one or more software and / or hardware.

[0172] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0173] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0174] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0175] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0176] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0177] Memory may include non-persistent storage in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM. Memory is an example of computer-readable media.

[0178] Computer-readable media include both permanent and non-permanent, removable and non-removable media that can store information using any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other non-transferable medium that can be used to store information accessible by a computing device. As defined herein, computer-readable media does not include transient computer-readable media, such as modulated data signals and carrier waves.

[0179] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0180] This application can be described in the general context of computer-executable instructions, such as program modules, that are executed by a computer. Generally, program modules include routines, programs, objects, components, data structures, etc., that perform a specific task or implement a specific abstract data type. This application can also be practiced in distributed computing environments where tasks are performed by remote processing devices connected via a communication network. In distributed computing environments, program modules can reside in local and remote computer storage media, including storage devices.

[0181] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.

[0182] The above description is merely an embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this application should be included within the scope of protection of the claims of this application.

Claims

1. A method for determining the distribution of suction holes in a printing suction platform, characterized in that, The method includes: The aperture of the suction holes is determined based on the media characteristics of the paper on the suction platform. The porosity of the suction platform is calculated by performing stress analysis on the paper. Calculate the number of suction holes on the suction platform based on the diameter of the suction holes and the opening ratio; Based on the number of suction holes, the initial distribution of the suction holes on the suction platform is determined using a meshing algorithm; According to the similarity measurement strategy, the grid corresponding to the initial distribution of the air intake holes is repeatedly merged or divided to iteratively optimize the initial distribution of the air intake holes on the air intake platform and determine the positional distribution of the air intake holes on the air intake platform. Determining the initial distribution of the suction holes on the suction platform using a meshing algorithm includes: The air suction platform is divided into a grid; The grid is initialized to assign an initial air intake hole in each grid. Based on the aperture, opening ratio, and number of the air intake holes, a similarity measurement strategy corresponding to the air intake holes is determined; Based on the similarity measurement strategy, it is determined whether to merge or split adjacent grids to obtain the merging and splitting results; Based on the merging and segmentation results, the initial distribution of the suction holes on the suction platform is determined; Determining the similarity measurement strategy corresponding to the air intake hole includes at least one of the following methods: When two adjacent air intakes are located on a grid, the similarity between the two adjacent air intakes is the Euclidean distance, which is the sum of the absolute values ​​of the differences between the coordinate values ​​of the air intakes. When the coordinates of the air intake holes are known and the Euclidean distance exists, the similarity between two adjacent air intake holes is the straight-line distance between the two air intake holes; When the air intake hole is identified by a vector, the similarity between two adjacent air intake holes is the cosine value between the vectors of the air intake holes; When the air intake is identified by a set of elements, the similarity between two adjacent air intakes is the ratio of the intersection to the union of the air intakes. Determining the initial distribution of the suction holes on the suction platform includes: Using the Euclidean space model as a mathematical model, the positions of the suction holes on the suction platform are arranged according to the meshing algorithm to obtain the initial distribution of the suction holes on the suction platform.

2. The method as described in claim 1, characterized in that, The porosity of the suction platform is calculated by performing stress analysis on the paper, including: Based on the lateral force on the paper and the external disturbance force, the range of static friction force is determined when the paper is adsorbed. The range of the porosity is calculated based on the range of the static friction force.

3. The method as described in claim 2, characterized in that, The range of static friction is determined when the paper is held in place without shifting and with dents are permissible.

4. The method as described in claim 3, characterized in that, The indentation distance of the paper is 0.1 mm.

5. The method as described in claim 1, characterized in that, The size of the grid is determined based on the diameter and density of the air intake holes.

6. The method as described in claim 1, characterized in that, Based on the aforementioned similarity measurement strategy, it is determined whether to merge or split adjacent grids, including: When the similarity between adjacent grids exceeds a preset threshold, the adjacent grids are merged into one grid. When the similarity between adjacent grids is lower than the preset threshold, the grid is divided into multiple sub-grids.

7. A device for determining the air intake distribution of a printing suction platform based on the method for determining the air intake distribution of a printing suction platform according to any one of claims 1-6, comprising: The aperture determination module determines the aperture of the suction holes based on the media characteristics of the paper on the suction platform. The calculation module calculates the opening ratio of the suction platform by performing stress analysis on the paper; The initial distribution determination module determines the initial distribution of the suction holes on the suction platform using a meshing algorithm based on the hole diameter and the opening ratio of the suction holes. The optimization module optimizes the initial distribution of the suction holes on the suction platform and determines the positional distribution of the suction holes on the suction platform.

8. An electronic device comprising at least one processor and a memory, the memory storing a program and configured such that at least one processor performs a method for determining the distribution of suction holes based on a printing suction platform according to any one of claims 1-6.

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