Intelligent papermaking cylinder roll rotation casting control system

Abstract

This invention discloses an intelligent papermaking cylinder roller rotation casting control system. This invention relates to the field of intelligent papermaking technology and solves the problem that using the original casting volume for the same casting can lead to uneven thickness in some areas of the printed paper, thus affecting the poor quality of the printed paper. This invention targets multi-point areas, considering the intersection area radiated by two convex points to be analyzed. By analyzing the volume values ​​of the diffusion from the two convex points to the surrounding area, the total intersection volume that the corresponding intersection area can generate is determined. Then, it is determined whether this total intersection volume value exceeds the original normal casting parameters. If it exceeds, it indicates that the value is incorrect and will seriously affect the subsequent normal printing process. If the value is normal, the volume difference of the corresponding area is determined sequentially. Then, based on the determined volume difference, the casting volume in the corresponding printing casting process is determined, ensuring the overall quality of the subsequent paper and improving the overall practicality of this control system.

Description

Technical Field

[0001] This invention relates to the field of intelligent papermaking technology, specifically to an intelligent papermaking cylinder roller rotation casting control system. Background Technology

[0002] Intelligent papermaking rollers also play an important role in the papermaking process; on the papermaking machine, the pulp is evenly covered on the rollers, and other rollers apply pressure to the paper so that subsequent moisture evaporation and solidification can be carried out and the paper thickness can be kept uniform.

[0003] Patent application CN107587372A discloses a quantitative control pulp supply system for a paper machine. It includes a mixing tank connected to a white water inlet pipe and a pulp tank feed pipe. A discharge pipe is connected to the lower outlet of the mixing tank, and the discharge pipe is connected to a high-level stabilizing tank. A feed pipe for the paper machine extends from the lower part of the high-level tank and is equipped with a flow control valve. A flow control valve and a pulp pump are also installed on the pulp tank feed pipe, which is connected to a paper pulp tank. The flow control valves on the feed pipe and the pulp tank feed pipe are electrically connected to the paper machine control box. A pulp flow meter, electrically connected to the paper machine control box, is also installed on the paper feed pipe. This system features a reasonable structure, convenient and reliable operation, the ability to reuse recycled water, reduced costs, environmental friendliness, and improved paper quality.

[0004] During the use of intelligent papermaking cylinders, a quantitative pouring device is required to pour slurry onto the surface of the cylinder. However, during the actual printing process, residues will remain on the surface of the cylinder. If the original pouring amount is used to pour the same amount onto the residue areas, it will result in uneven thickness in some areas of the printed paper, thus affecting the quality of the printed paper. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an intelligent papermaking cylinder rotation pouring control system, which solves the problem that using the original pouring volume for the same pouring will result in uneven thickness in some areas of the paper printed later, thus affecting the poor quality of the printed paper.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an intelligent papermaking cylinder roll rotation casting control system, comprising:

[0007] The roller surface image acquisition end acquires the surface image of the rotating intelligent papermaking cylinder roller and transmits the acquired surface image to the roller surface image analysis end.

[0008] The roller surface image analysis end identifies protrusions in the acquired surface image, determines the radiation area based on the identified protrusions, and then analyzes whether other protrusions are included within the radiation area. The specific method is as follows:

[0009] The acquired surface image is planarized to adjust the curled plane into a flat plane. The planarization process is performed by a specified preset model.

[0010] For convex points on a flat surface, identify the surrounding area of ​​the convex point as uneven and exhibiting curvature. Determine the height of the corresponding convex point relative to the surrounding flat surface and label it as G. i Where i represents different convex points, and the height value G is analyzed and determined. i Does it satisfy: G i >Y1, where Y1 is a preset value. If this condition is met, the convex point is marked as the convex point to be analyzed; otherwise, G is not met. i If the value is greater than Y1, then no processing is performed;

[0011] The height value G of the convex point to be analyzed i Further processing was performed using R. i =G i ×C1 determines the radius value R of the convex point to be analyzed. i Where C1 is a preset coefficient factor, based on this radius value R i Draw a radiating circle around the convex point to be analyzed. Confirm whether the radiating circle includes other convex points to be analyzed. If it does, mark the radiating circle as a multi-point region and perform further analysis through the subsequent multi-point region processing terminal. If it does not, mark the radiating circle as a single-point region and perform further analysis through the subsequent single-point region processing terminal.

[0012] The single-point area processing end determines the volume parameters of a single point within the single-point area, and then determines the preset required pouring volume for this single-point area, thus determining the pouring volume difference. The specific method is as follows:

[0013] Determine the edge contour of the convex point to be analyzed within this single-point region, draw line segments, identify the irregular circle at the edge, and then determine the area parameter of this irregular circle based on it, and label it as MJ. k Where k represents a different single-point region, and then the height value G of the corresponding convex point to be analyzed within this single-point region is determined. k Using TJ k =1 / 3×MJ k ×G k The volume parameters TJ of this single-point region are obtained. k ;

[0014] Determine the overall radiation area of ​​a single point region and label it as ZT.k Using BZ k =ZT k ×C2 determines the preset required pouring volume for this single-point area, where C2 is a preset fixed coefficient factor, when TJ k >BZ k When an error occurs, an error signal is generated and displayed directly through the control terminal; otherwise, CZ is used. k =BZ k -TJ k The difference in casting volume CZ is obtained. k And the difference in casting volume CZ k The data is transmitted to the control terminal, which then controls the grout volume to be poured at a specific point in the area, setting it to CZ. k Pour the concrete into this single area;

[0015] The multi-point region processing unit determines the radiation regions of different convex points to be analyzed within the multi-point region, then locks the intersection regions, and determines whether the volume parameters of these intersection regions exceed the limits. The specific method is as follows:

[0016] By determining the radius value corresponding to the height of the convex point to be analyzed, and then using the radius value to determine the corresponding radiating circle of the convex point, the intersection regions between several radiating circles are identified. The area ratio parameter of different intersection regions within the original radiating circle is determined and denoted as ZZ. t , where t represents the different convex points to be analyzed within this multi-point region;

[0017] Next, based on the edge contour of the corresponding convex point to be analyzed, determine the irregular circle at the edge. Then, combined with the height value of the convex point to be analyzed, determine the volume parameters of this convex point and label it as TD. t , using TD t ×ZZ t =BT t The volume parameter BT of the corresponding convex intersection region to be analyzed is obtained. t Then, several sets of volume parameters BT generated by this intersection region. t Summing is performed to obtain the total volume parameter ZC. Then, based on the specific area parameters of this intersection region, the preset required casting volume XQ of this intersection region is locked. It is analyzed whether ZC satisfies: ZC > XQ. If it does, an error signal is directly generated and displayed.

[0018] If ZC > XQ is not satisfied, the method of confirming the pouring volume difference in a single-point area is adopted. Different convex points to be analyzed in multiple points are processed sequentially, cross-regions are eliminated, and the pouring volume difference of non-cross-regions is locked. At the same time, the pouring volume difference of the cross-regions = XQ - ZC. The determined pouring volume difference is transmitted to the control terminal, and the control terminal then controls the pouring volume according to the pouring volume difference corresponding to the corresponding region.

[0019] This invention provides an intelligent papermaking cylinder roller rotation casting control system. Compared with the prior art, it has the following advantages:

[0020] This invention identifies raised points on the acquired surface image, determines the radiation area based on the identified raised points, and then analyzes whether other raised points are included within the radiation area. If they are, the area is marked as a multi-point area; if not, it is marked as a single-point area. Different areas are processed in different ways to determine the corresponding slurry content, control the pouring rate, and ensure the normal roller printing of the corresponding paper in the later stages.

[0021] For the single-point area, by determining the volume parameters of the radiating circle caused by the corresponding protrusion to be analyzed, the subsequent pouring volume of this area is determined and precisely controlled to ensure that the amount of grout poured in this single-point area is not excessive, so as not to affect the subsequent normal pouring process and ensure the pouring quality.

[0022] For multi-point areas, the intersection area radiated by the two protrusions to be analyzed is taken into account. By analyzing the volume values ​​of the two protrusions to be analyzed and diffused to the surrounding area, the total intersection volume value that the corresponding intersection area can generate is determined. Then, it is determined whether this total intersection volume value exceeds the original normal pouring parameters. If it exceeds, it means that the value is incorrect and will seriously affect the subsequent normal roller printing process. If the value is normal, the volume difference of the corresponding area is determined in turn. Then, based on the determined volume difference, the pouring amount in the corresponding roller printing pouring process is determined to ensure the overall quality of the corresponding paper and improve the overall practicality of this control system. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the principle framework of the present invention;

[0024] Figure 2 This is a schematic diagram of the radiation processing of multiple regions in this invention. Detailed Implementation

[0025] 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 some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Example 1

[0027] Please see Figure 1This application provides an intelligent papermaking cylinder roll rotation casting control system, including a roll surface image acquisition end, a roll surface image analysis end, a single-point area processing end, a multi-point area processing end, and a control terminal;

[0028] The roller surface image acquisition end is electrically connected to the input node of the roller surface image analysis end, and the roller surface image analysis end is electrically connected to the input node of the single-point area processing end or the multi-point area processing end. Both the single-point area processing end and the multi-point area processing end are electrically connected to the input node of the control terminal.

[0029] The roller surface image acquisition end acquires the surface image of the rotating intelligent papermaking cylinder roller and transmits the acquired surface image to the roller surface image analysis end. The outer surface of the intelligent papermaking cylinder roller is divided into four groups of partitions, and the image of each group of partitions is acquired. The acquired partition is the partition that has just completed roller printing.

[0030] The roller surface image analysis terminal identifies convex points in the acquired surface image, determines the radiation area based on the identified convex points, and then analyzes whether the radiation area includes other convex points. If so, the area is marked as a multi-point area; otherwise, it is marked as a single-point area and processed by different subsequent processing terminals. The specific method for identifying convex points is as follows:

[0031] The acquired surface image is planarized to adjust the curled plane into a flat plane. The planarization process is performed by a specified preset model, which is determined by the operator based on a large amount of experimental data.

[0032] For convex points on a flat surface, identify the surrounding area of ​​the convex point as uneven and exhibiting curvature. Determine the height of the corresponding convex point relative to the surrounding flat surface and label it as G. i Where i represents different convex points, and the height value G is analyzed and determined. i Does it satisfy: G i >Y1, where Y1 is a preset value, the specific value of which is determined by the operator based on experience. If it is satisfied, the convex point is marked as the convex point to be analyzed; if it is not satisfied, no processing is performed.

[0033] The height value G of the convex point to be analyzed i Further processing was performed using R. i =G i ×C1 determines the radius value R of the convex point to be analyzed. i C1 is a preset coefficient factor, the specific value of which is determined by the operator based on experience, and is determined according to this radius value R. iDraw a radiating circle around the convex point to be analyzed. Confirm whether the radiating circle includes other convex points to be analyzed. If it does, mark the radiating circle as a multi-point region and perform further analysis through the subsequent multi-point region processing terminal. If it does not, mark the radiating circle as a single-point region and perform further analysis through the subsequent single-point region processing terminal.

[0034] Specifically, when a bump appears on the corresponding roller, it means that the bump is a residue left after the previous set of rollers has finished printing. When normal pouring is performed later, this will cause excess slurry in this area. Therefore, it is necessary to determine the area, and then analyze the area to determine the corresponding pouring slurry content, control the pouring rate, and ensure the normal roller printing of the corresponding paper in the later stage.

[0035] The single-point area processing terminal determines the volume parameters of a single point corresponding to the single-point area, then determines the preset required pouring volume for this single-point area, determines the pouring volume difference, and transmits the pouring volume difference of this single-point area to the control terminal. The specific method for determining the pouring volume difference is as follows:

[0036] Determine the edge contour of the convex point to be analyzed within this single-point region, draw line segments, identify the irregular circle at the edge, and then determine the area parameter of this irregular circle based on it, and label it as MJ. k Where k represents a different single-point region, and then the height value G of the corresponding convex point to be analyzed within this single-point region is determined. k Using TJ k =1 / 3×MJ k ×G k The volume parameters TJ of this single-point region are obtained. k ;

[0037] Determine the overall radiation area of ​​a single point region and label it as ZT. k Using BZ k =ZT k ×C2 determines the preset required pouring volume for this single-point area, where C2 is a preset fixed coefficient factor, the specific value of which is determined by the operator based on experience. When TJ k >BZ k When an error occurs, an error signal is generated and displayed directly through the control terminal for external personnel to view and take timely countermeasures; otherwise, CZ is used. k =BZ k -TJ k The difference in casting volume CZ is obtained. k And the difference in casting volume CZ k The data is transmitted to the control terminal, which then controls the grout volume to be poured at a specific point in the area, setting it to CZ. kPour the concrete into this single area;

[0038] Specifically, the raised dots remaining from the original pouring will affect the next normal roller printing process. Therefore, it is necessary to ensure that the amount of pouring slurry added does not exceed the corresponding standard. Since the pouring amount is a fixed value during normal pouring, it is necessary to adjust the value for such raised dot areas to ensure that the amount of pouring slurry in this single area is not too much, so as not to affect the subsequent normal pouring process and ensure the pouring quality.

[0039] Example 2

[0040] In the specific implementation process, the difference between this embodiment and embodiment one is that this embodiment mainly targets the situation where there are multiple protrusions, and it is necessary to determine the normal pouring value of multiple protrusions;

[0041] Combination Figure 2 The multi-point region processing terminal determines the radiation regions of different convex points to be analyzed within the multi-point region, then locks the intersection region, and determines whether the volume parameter of this intersection region exceeds the standard. If it exceeds the standard, an error signal is generated; if it does not exceed the standard, the casting volume difference of this multi-point region is determined, and the determined casting volume difference is transmitted to the control terminal. The specific method for determining this is as follows:

[0042] By determining the radius value corresponding to the height of the convex point to be analyzed, and then using the radius value to determine the corresponding radiating circle of the convex point, the intersection regions between several radiating circles are identified. The area ratio parameter of different intersection regions within the original radiating circle is determined and denoted as ZZ. t , where t represents the different convex points to be analyzed within this multi-point region;

[0043] Next, based on the edge contour of the corresponding convex point to be analyzed, determine the irregular circle at the edge. Then, combined with the height value of the convex point to be analyzed, determine the volume parameters of this convex point and label it as TD. t , using TD t ×ZZ t =BT t The volume parameter BT of the corresponding convex intersection region to be analyzed is obtained. t Then, several sets of volume parameters BT generated by this intersection region. t The total volume parameter ZC is obtained by summing the values. Then, based on the specific area parameters of the intersection area, the preset required casting volume XQ of the intersection area is locked. It is analyzed whether ZC satisfies the condition that ZC > XQ. If it does, an error signal is generated and displayed directly for external personnel to view and take timely countermeasures. If it does not satisfy the condition, the next step is executed.

[0044] The method of confirming the pouring volume difference by single point area is adopted. Different convex points to be analyzed in multiple points are processed in sequence, the overlapping areas are eliminated, and the pouring volume difference of non-overlapping areas is locked. At the same time, the pouring volume difference of the overlapping area = XQ-ZC. The determined pouring volume difference is transmitted to the control terminal. The control terminal then controls the pouring volume according to the pouring volume difference corresponding to the corresponding area.

[0045] Specifically, for multi-point areas, there are multiple convex points to be analyzed in the same area, thus corresponding intersection areas exist. When determining the pouring volume difference, the intersection areas radiated by the two convex points to be analyzed need to be taken into account. By analyzing the volume values ​​that the two convex points to be analyzed diffuse to the surrounding area, the total intersection volume value that the corresponding intersection area can generate is locked. Then, it is determined whether this total intersection volume value exceeds the original normal pouring parameters. If it exceeds, it means that the value is incorrect, which will seriously affect the subsequent normal roller printing process. If the value is normal, the volume difference of the corresponding area is determined in turn. Then, based on the determined volume difference, the pouring amount in the corresponding roller printing pouring process is determined to ensure the overall quality of the corresponding paper and improve the overall practicality of this control system.

[0046] Example 3

[0047] In its specific implementation, this embodiment includes all the implementation processes of the two sets of embodiments described above.

[0048] Some of the data in the above formulas are numerical calculations with dimensions removed, and the contents not described in detail in this specification are all prior art known to those skilled in the art.

[0049] The above embodiments are only used to illustrate the technical methods of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical methods of the present invention without departing from the spirit and scope of the technical methods of the present invention.

Claims

1. An intelligent papermaking cylinder roller rotation casting control system, characterized in that, include: The roller surface image acquisition end acquires the surface image of the rotating intelligent papermaking cylinder roller and transmits the acquired surface image to the roller surface image analysis end. The roller surface image analysis end confirms the protrusions in the acquired surface image, then determines the radiation area based on the confirmed protrusions, and then analyzes whether other protrusions are included in the radiation area. If they exist, this area is marked as a multi-point area; if they do not exist, this area is marked as a single-point area and then processed by different subsequent processing ends. The single-point area processing terminal determines the volume parameters of the corresponding convex point to be analyzed within the single-point area. Then, it determines the preset required pouring volume for this single-point area, calculates the pouring volume difference, and transmits this pouring volume difference for the single-point area to the control terminal. The specific method is as follows: Determine the edge contour of the convex point to be analyzed within this single-point region, draw line segments, identify the irregular circle at the edge, and then determine the area parameter of this irregular circle based on it, and label it as MJ. k Where k represents a different single-point region, and then the height value G of the corresponding convex point to be analyzed within this single-point region is determined. k Using TJ k =⅓×MJ k ×G k The volume parameter TJ of the corresponding convex point to be analyzed within this single-point region is obtained. k ; Determine the overall radiation area of ​​a single point region and label it as ZT. k Using BZ k =ZT k ×C2 determines the preset required pouring volume for this single-point area, where C2 is a preset fixed coefficient factor, when TJ k >BZ k When an error occurs, an error signal is generated and displayed directly through the control terminal; otherwise, CZ is used. k =BZ k -TJ k The difference in casting volume CZ is obtained. k And the difference in casting volume CZ k The data is transmitted to the control terminal, which then controls the grout volume to be poured at a specific point in the area, setting it to CZ. k Pour the concrete into this single area; The multi-point area processing terminal determines the radiation area of ​​different convex points to be analyzed within the multi-point area, then locks the intersection area, and determines whether the volume parameter of this intersection area exceeds the standard. If it exceeds the standard, an error signal is generated; if it does not exceed the standard, the casting volume difference of this multi-point area is determined and transmitted to the control terminal. The specific method is as follows: By determining the radius value corresponding to the height of the convex point to be analyzed, and then using the radius value to determine the corresponding radiating circle of the convex point, the intersection regions between several radiating circles are identified. The area ratio parameter of different intersection regions within the original radiating circle is determined and denoted as ZZ. t , where t represents the different convex points to be analyzed within this multi-point region; Next, based on the edge contour of the corresponding convex point to be analyzed, determine the irregular circle at the edge. Then, combined with the height value of the convex point to be analyzed, determine the volume parameters of this convex point and label it as TD. t , using TD t ×ZZ t =BT t The volume parameter BT of the corresponding convex intersection region to be analyzed is obtained. t Then, several sets of volume parameters BT generated by this intersection region. t Summing is performed to obtain the total volume parameter ZC. Then, based on the specific area parameters of this intersection region, the preset required casting volume XQ of this intersection region is locked. It is analyzed whether ZC satisfies: ZC > XQ. If it does, an error signal is directly generated and displayed. The specific methods for determining the radiation area of ​​different convex points to be analyzed in a multi-point area also include: if ZC > XQ is not satisfied, then the method of confirming the pouring volume difference in a single-point area is adopted. Different convex points to be analyzed in a multi-point area are processed sequentially, the overlapping areas are eliminated, the pouring volume difference of the non-overlapping areas is locked, and the pouring volume difference of the overlapping areas is XQ-ZC. The determined pouring volume difference is transmitted to the control terminal, and the control terminal then controls the pouring amount according to the pouring volume difference corresponding to the corresponding area.

2. The intelligent papermaking cylinder roller rotation casting control system according to claim 1, characterized in that, The specific method for confirming convex points using the roller surface image analysis terminal is as follows: The acquired surface image is planarized to adjust the curled plane into a flat plane. The planarization process is performed by a specified preset model. For convex points on a flat surface, identify the surrounding area of ​​the convex point as uneven and exhibiting curvature. Determine the height of the corresponding convex point relative to the surrounding flat surface and label it as G. i Where i represents different convex points, and the height value G is analyzed and determined. i Does it satisfy: G i >Y1, where Y1 is a preset value. If satisfied, this convex point is marked as the convex point to be analyzed. The height value G of the convex point to be analyzed i Further processing was performed using R. i =G i ×C1 determines the radius value R of the convex point to be analyzed. i Where C1 is a preset coefficient factor, based on this radius value R i Draw a radiating circle around the convex point to be analyzed. Confirm whether the radiating circle includes other convex points to be analyzed. If it does, mark the radiating circle as a multi-point region and perform further analysis using the subsequent multi-point region processing tool. If it does not, mark the radiating circle as a single-point region and perform further analysis using the subsequent single-point region processing tool.

3. The intelligent papermaking cylinder roller rotation casting control system according to claim 2, characterized in that, The specific methods for confirming convexities using the roller surface image analysis terminal also include: If G is not satisfied i If the value is greater than Y1, then no processing is performed.

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