Printing production line monitoring, control and management method based on artificial intelligence

Abstract

The present invention relates to the technical field of intelligent monitoring and control of printing production lines, and specifically to a printing production line monitoring, control and management method based on artificial intelligence. This method monitors the status parameters of printed products at the finished product end of the printing production line, calculates and evaluates the font status to determine whether there is a printing abnormality, and generates a monitoring signal. Based on the monitoring signal, multi-parameter real-time monitoring and analysis is adopted, and the ink characteristics, environmental status and equipment status of the ink outlet end of the printing production line are evaluated. The ink quality impact value, environmental impact value and equipment impact value are calculated respectively, and the above impact values ​​are normalized to obtain a comprehensive impact value. The ink setting calibration parameters are determined according to the ink setting parameters and the comprehensive impact value, thereby realizing intelligent optimization and adaptive adjustment of the ink parameters, ensuring the stability and consistency of printing quality.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent monitoring and control of printing production lines, and specifically to a printing production line monitoring, control and management method based on artificial intelligence. Background Art

[0002] A printing production line is an automated production system used for large-scale production of printed materials. It consists of multiple coordinated equipment and process flows and is widely used in fields such as books, packaging, labels, posters, newspapers, and bills. During the printing production process, the state of the ink directly affects the final print quality, so precise control of ink parameters is crucial.

[0003] However, traditional ink control methods in the printing production process still have significant limitations. The current industry usually relies on manual visual inspection or sampling testing to evaluate printing quality. This method has the problem of untimely detection and cannot meet the needs of efficient and accurate production.

[0004] Furthermore, the setting of ink parameters during the printing process often relies on manual experience. However, due to the influence of various external factors such as ink properties, environmental conditions, and equipment operating status, it is difficult to maintain long-term stability, resulting in inaccurate ink parameters and, in turn, affecting print quality. Due to the lack of real-time data monitoring and adaptive adjustment capabilities, traditional printing production lines cannot accurately control ink properties during the production process, thus affecting the consistency and stability of printed products.

[0005] Problem In order to solve the above defects, a technical solution is now provided. Summary of the Invention

[0006] The present invention aims to solve the problem that the monitoring and regulation of ink in traditional printing production processes are not accurate and timely, and it is difficult to accurately control the ink parameters during the production process, and proposes a printing production line monitoring, regulation and management method based on artificial intelligence.

[0007] The purpose of the present invention can be achieved through the following technical solutions:

[0008] The printing production line monitoring, control and management method based on artificial intelligence includes the following steps:

[0009] A1: Monitor the status parameters of printed products at the finished product end of the printing production line to obtain font clarity, font feature value, and font color value. Analyze and process the status of the printed products at the finished product end of the printing production line to obtain a font status evaluation value. Based on the font status evaluation value, determine the printing abnormality and generate a monitoring signal. Execute A2-A4.

[0010] A2: Based on the received monitoring signals, the ink characteristic parameters at the ink outlet of the printing production line are monitored to obtain the ink viscosity evaluation index, ink concentration evaluation index, and ink bubble evaluation index. Based on this, the ink characteristics at the ink outlet of the printing production line are analyzed and processed to obtain the ink quality impact value;

[0011] A3: Based on the received monitoring signals, the environmental parameters at the ink outlet of the printing production line are monitored to obtain a temperature assessment index and a humidity assessment index. The environmental conditions at the ink outlet of the printing production line are then analyzed and processed to obtain an environmental impact value.

[0012] A4: Based on the received monitoring signals, the equipment status parameters at the ink outlet of the printing production line are monitored to obtain the set operating time value, set temperature value, and set pressure value. Based on this, the equipment status at the ink outlet of the printing production line is analyzed and processed to obtain the equipment impact value.

[0013] A5: Extract the values ​​of ink quality impact value, environmental impact value and equipment impact value, perform normalization processing and obtain the comprehensive impact value;

[0014] A6: Obtain the ink setting parameters of the ink outlet end of the printing production line, and analyze the ink setting calibration parameters of the ink outlet end of the printing production line based on the comprehensive impact value of the ink outlet end of the printing production line and the ink setting parameters, so as to obtain the ink setting calibration parameters of the ink outlet end of the printing production line, and perform corresponding control operations.

[0015] Furthermore, the status parameters of printed products at the finished product end of the printing production line are monitored. The specific process is as follows:

[0016] By collecting and analyzing the video of the printed product during the current monitoring period, the printed product image at each monitoring time point during the current monitoring period is obtained and marked as the printed product image to be inspected;

[0017] Perform sharpness detection on the edges of fonts in the image of the printed product to be inspected to obtain the clarity of the fonts;

[0018] The font appearance features in the printed product image to be inspected are extracted through image recognition, and the values ​​of the number of cracks, crack length and crack width are extracted and multiplied by the corresponding weight coefficients and then added to obtain the font appearance feature value;

[0019] Using image recognition technology, the font area is extracted from the image of the printed product to be inspected, and color points are evenly distributed on the font area to obtain the color points in the font area. The chromaticity value of each color point in the font area is also extracted and compared with the set reference comparison range.

[0020] If the chromaticity value of a color point is outside the set reference comparison interval, the color point is marked as an abnormal point. If the chromaticity value of a color point is within the set reference comparison interval, the color point is marked as a normal point.

[0021] After completing the chromaticity analysis of all color points, the abnormal points and normal points are integrated respectively, and the values ​​of the abnormal area and the normal area are calculated and extracted for proportion calculation to obtain the font color value.

[0022] Furthermore, the status of printed products at the finished product end of the printing production line is analyzed and processed. The specific process is as follows:

[0023] Extracting the font clarity, font feature value, and font color value of the printed product image to be inspected and performing normalization processing to obtain a font status evaluation value in the printed product image to be inspected;

[0024] Comparing and analyzing the font status evaluation value in the printed product image to be inspected with a preset font status evaluation threshold, if the font status evaluation value in the printed product image to be inspected is less than the preset font status evaluation threshold, the printed product image to be inspected is determined to be in an abnormal state;

[0025] The number of times an abnormal state is determined during the current monitoring period at the finished product end of the printing production line is counted to obtain the number of abnormal determinations during the current monitoring period at the finished product end of the printing production line, and the number of abnormal determinations during the current monitoring period at the finished product end of the printing production line is compared and analyzed with a preset number of abnormal determination thresholds. If the number of abnormal determinations during the current monitoring period at the finished product end of the printing production line is greater than or equal to the preset number of abnormal determination thresholds, the printed product status at the finished product end of the printing production line is determined to be a printing abnormal state.

[0026] Furthermore, the ink characteristic parameters at the ink outlet of the printing production line are monitored. The specific process is as follows:

[0027] By obtaining the shear stress and shear rate of the ink flow parameters at the ink outlet of the printing production line during the current monitoring period, the ink viscosity evaluation index Ujqz is determined accordingly;

[0028] By monitoring the absorbance of the ink at the ink outlet end of the printing production line during the current monitoring period, the absorbance value of the ink at the ink outlet end of the printing production line during the current monitoring period is obtained;

[0029] A standard curve is established by preparing a series of ink standard solutions of known concentrations and measuring the absorbance of each of these standard solutions at a selected wavelength. The absorbance of the standard solutions is plotted against the concentration, with the abscissa representing the concentration and the ordinate representing the absorbance, to obtain a linear relationship between the absorbance and the concentration. The standard curve formula is: A = m·ymn + b, where m represents the slope, b represents the intercept, and ymn represents the concentration.

[0030] Substitute the absorbance value of the ink at the ink outlet end of the printing production line during the current monitoring period into the standard curve formula to calculate the concentration of the ink at the ink outlet end of the printing production line during the current monitoring period, and determine the ink concentration evaluation index Undp based on this;

[0031] The ink bubble evaluation index Uqpz is determined by obtaining the number of bubbles in the ink at the ink outlet of the printing production line during the current monitoring period.

[0032] Furthermore, the ink characteristics at the ink outlet of the printing production line are analyzed and processed. The specific process is as follows:

[0033] According to the formula: δ1 = Ujqz × a4 + Undp × a5 + Uqpz × a6, the ink quality impact value δ1 is obtained, where a4, a5 and a6 represent the weight coefficients of the ink viscosity evaluation index, ink concentration evaluation index and ink bubble evaluation index, respectively, and a4>a5>a6.

[0034] Furthermore, the environmental parameters of the ink outlet of the printing production line are monitored. The specific process is as follows:

[0035] Detection points are arranged at the ink outlet of the printing production line. The specific arrangement is as follows: the center point of the ink outlet of the printing production line is used as the reference point to determine the monitoring range. A circle is drawn with a preset length as the radius. The area of ​​the circle is used as the monitoring range corresponding to the ink outlet of the printing production line. The monitoring range is then radially arranged. Starting from the reference point, several rays are radiated in all directions, and detection points are set on the rays to obtain each detection point.

[0036] By obtaining the temperature of each detection point corresponding to the ink outlet end of the printing production line during the current monitoring period, and extracting the maximum temperature, the middle temperature and the minimum temperature of each detection point and calculating the average value, the reference temperature of each detection point corresponding to the ink outlet end of the printing production line during the current monitoring period is obtained;

[0037] Determine the temperature evaluation index Hwdz based on the maximum temperature, the middle temperature, the minimum temperature and the reference temperature of each detection point corresponding to the ink outlet end of the printing production line during the current monitoring period;

[0038] The median temperature is represented by arranging the temperatures of the detection points corresponding to the ink outlet end of the printing production line during the current monitoring period in ascending order, and extracting the median temperature in the sequence as the median temperature;

[0039] The humidity at each monitoring time point of the ink outlet end of the printing production line during the current monitoring period is obtained by obtaining the humidity at each detection point corresponding to each monitoring time point and calculating the average thereof, thereby obtaining the humidity at each monitoring time point of the ink outlet end of the printing production line during the current monitoring period;

[0040] The maximum humidity and minimum humidity are extracted from the humidity at each monitoring time point at the ink outlet end of the printing production line during the current monitoring period, thereby determining the humidity evaluation index Hsdz.

[0041] Furthermore, the environmental status of the ink outlet of the printing production line is analyzed and processed. The specific process is as follows:

[0042] According to the formula: The environmental impact value δ2 is obtained, wherein a7 and a8 represent weight coefficients of the temperature evaluation index and the humidity evaluation index respectively, and a7>a8.

[0043] Furthermore, the equipment status at the ink outlet of the printing production line is analyzed and processed. The specific process is as follows:

[0044] By obtaining the equipment status parameters of the ink outlet end of the printing production line during the current monitoring period, and extracting the set operating time value Sysz, set temperature value Swdz and set pressure value Sylz from them, according to the formula: Get the equipment impact value δ3, where Sysz * 、Swdz * and Sylz * represent the set reference operating time value, reference set temperature value and reference set pressure value respectively, a9, a10 and a11 represent the weight coefficients of the set operating time difference value, the set temperature difference value and the set pressure difference value respectively, and a11>a10>a9;

[0045] The set operation time value refers to the operating time of the equipment at the ink outlet end of the printing production line during the current monitoring period;

[0046] The set temperature value refers to the operating temperature of the equipment at the ink outlet of the printing production line during the current monitoring period;

[0047] The set pressure value refers to the working pressure of the equipment at the ink outlet end of the printing production line during the current monitoring period.

[0048] Furthermore, the formula for solving the comprehensive impact value is: A comprehensive impact value YXZ is obtained, where λ1, λ2, and λ3 represent the impact factor coefficients of the set ink quality impact value δ1, environment impact value δ2, and equipment impact value δ3, respectively.

[0049] Furthermore, the specific process of setting and adjusting the parameters for the ink at the ink outlet of the printing production line is as follows:

[0050] Matching the comprehensive impact value of the ink outlet end of the printing production line during the current monitoring period with the ink setting impact parameters corresponding to the set impact values ​​to obtain the ink setting impact parameters of the ink outlet end of the printing production line during the current monitoring period;

[0051] Obtain the ink setting parameters of the ink outlet end of the printing production line during the current monitoring period, and subtract the ink setting parameters from the ink setting influencing parameters to obtain the difference between the ink setting parameters of the ink outlet end of the printing production line during the current monitoring period and the ink setting influencing parameters, which are used as the ink setting calibration parameters of the ink outlet end of the printing production line during the current monitoring period.

[0052] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0053] 1. The present invention monitors and analyzes the font clarity, font feature value, and font color value of the finished product end of the printing production line, calculates the font status evaluation value, and determines whether the printing status is abnormal based on the calculated value, thereby achieving accurate identification of printing abnormalities, ensuring real-time and accuracy, avoiding the lag of traditional manual detection, and providing a scientific basis for the subsequent adjustment of ink setting parameters.

[0054] 2. The present invention adopts multiple parameters to monitor key factors such as ink characteristics, environmental status, equipment status, etc. at the ink outlet end of the printing production line in real time, and calculates ink quality impact values, environmental impact values, and equipment impact values ​​through intelligent data analysis. Based on these key impact parameters, the ink setting parameters can be intelligently adjusted to ensure the stability and consistency of printing quality, thereby significantly improving the accuracy of printing quality control, reducing human errors, and improving production efficiency, providing strong technical support for the printing industry to upgrade to intelligence and digitalization. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0056] Figure 1 It is a flowchart of the overall process of the present invention. DETAILED DESCRIPTION

[0057] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0058] like Figure 1As shown, the printing production line monitoring, control and management method based on artificial intelligence includes the following steps:

[0059] A1: Monitor the status parameters of printed products at the finished product end of the printing production line, and analyze and process the status of the printed products at the finished product end of the printing production line. The specific analysis process is as follows:

[0060] The video of the printed products during the current monitoring period is collected by a high-resolution industrial camera installed at the finished product end of the printing production line to obtain the video of the printed products during the current monitoring period;

[0061] The video of the printed product in the current monitoring period is analyzed to obtain the printed product image at each monitoring time point in the current monitoring period and mark it as the printed product image to be inspected;

[0062] Use the Sobel operator to detect the sharpness of the font edges in the printed product image to obtain the font clarity;

[0063] The Sobel operator is an edge detection method based on first-order derivatives. It detects font edges in an image by calculating the gradient changes in the horizontal (x-axis) and vertical (y-axis) directions of the image, thereby evaluating the clarity of the font. The larger the gradient of the font edge, the clearer the edge and the higher the clarity of the font. Conversely, a smaller gradient indicates that the font is blurry.

[0064] The font appearance features in the printed product image to be inspected are extracted through image recognition, and the values ​​of the number of cracks, crack length and crack width are extracted and multiplied by the corresponding weight coefficients and then added to obtain the font appearance feature value;

[0065] Using image recognition technology, the font area is extracted from the image of the printed product to be inspected, and color points are evenly distributed on the font area to obtain the color points in the font area. The chromaticity value of each color point in the font area is also extracted and compared with the set reference comparison range.

[0066] If the chromaticity value of a color point is outside the set reference comparison interval, the color point is marked as an abnormal point. If the chromaticity value of a color point is within the set reference comparison interval, the color point is marked as a normal point.

[0067] After completing the chromaticity analysis of all color points, integrate the abnormal points and normal points respectively, calculate and extract the values ​​of the abnormal area and the normal area, calculate the proportion, and obtain the font color value;

[0068] Extract the font clarity, font feature value, and font color value of the printed product image to be inspected, mark them as Tqxd, Tbtz, and Tsmz respectively, and take the values ​​for normalization according to the formula: Obtaining a font status evaluation value TXP in the printed product image to be inspected, where e represents a set natural constant, a1, a2, and a3 represent weight coefficients of font clarity, font feature value, and font color value, respectively, and a1>a2>a3;

[0069] Comparing and analyzing the font status evaluation value in the image of the printed product to be inspected with a preset font status evaluation threshold, if the font status evaluation value in the image of the printed product to be inspected is less than the preset font status evaluation threshold, the image of the printed product to be inspected is determined to be in an abnormal state; otherwise, the image of the printed product to be inspected is determined to be in a normal state;

[0070] The number of times the printing production line's finished product end is judged to be in an abnormal state during the current monitoring period is counted to obtain the number of abnormal judgments during the current monitoring period at the printing production line's finished product end, and the number of abnormal judgments during the current monitoring period at the printing production line's finished product end is compared and analyzed with the preset number of abnormal judgments threshold. If the number of abnormal judgments during the current monitoring period at the printing production line's finished product end is greater than or equal to the preset number of abnormal judgments threshold, the printed product status at the printing production line's finished product end is judged to be an abnormal printing state, and a monitoring signal is generated, and A2-A4 is executed at the same time. Otherwise, the printed product status at the printing production line's finished product end is judged to be a normal printing state.

[0071] A2: Based on the received monitoring signal, the ink characteristic parameters at the ink outlet of the printing production line are monitored, and the ink characteristics at the ink outlet of the printing production line are analyzed and processed. The specific analysis process is as follows:

[0072] The flow parameters of the ink at the ink outlet of the printing production line during the current monitoring period are monitored and obtained by the rotational viscometer, and the shear stress and shear rate of the ink at the ink outlet of the printing production line during the current monitoring period are obtained and marked as jql i and jqs i , according to the formula: Obtain the ink viscosity evaluation index Ujqz, where unp represents the reference viscosity value, i represents the number of each monitoring time point in the current monitoring period, and i = 1, 2, 3…n, n represents the total number of monitoring time point numbers in the current monitoring period, and η1 represents the set correction coefficient;

[0073] It should be noted that shear stress is the force acting between ink layers and is used to describe the "resistance" of ink under shear. When the ink flows in the rotational viscometer, it is affected by the rotating parts, and friction occurs between the ink layers, thereby generating shear stress. The greater the shear stress, the greater the flow resistance of the ink. The shear rate indicates the relative sliding speed between the layers during the flow of the ink. Specifically, it refers to the speed difference between adjacent ink layers per unit time, which is the shear rate.

[0074] The absorbance of the ink at the ink outlet end of the printing production line during the current monitoring period is monitored and obtained by using an ultraviolet-visible spectrophotometer to obtain the absorbance value of the ink at the ink outlet end of the printing production line during the current monitoring period;

[0075] A standard curve is established by preparing a series of ink standard solutions of known concentrations, with a concentration range that covers the possible ink concentration range in actual production. The absorbance of these standard solutions at a selected wavelength is measured using a UV-visible spectrophotometer. The absorbance of the standard solutions is plotted against the concentration, with the abscissa representing the concentration and the ordinate representing the absorbance. A linear relationship between the absorbance and concentration is obtained. The standard curve formula (assuming a linear relationship) is: A = m·ymn + b, where m represents the slope (the change in absorbance per unit change in concentration), b represents the intercept, and ymn represents the concentration.

[0076] Substitute the absorbance value of the ink at the ink outlet of the printing production line during the current monitoring period into the standard curve formula to calculate the concentration of the ink at the ink outlet of the printing production line during the current monitoring period and mark it as ymn i , according to the formula: Get the ink concentration evaluation index Undp, ​​where ymn i-1 Indicates the concentration of ink at the ink outlet of the printing production line at the i-1th monitoring time point in the current monitoring period, ymn * represents the reference concentration, η2 and η3 represent the set correction coefficients respectively;

[0077] The number of bubbles in the ink at the ink outlet of the printing production line during the current monitoring period is monitored by infrared imaging equipment, and the number of bubbles in the ink at the ink outlet of the printing production line during the current monitoring period is obtained and marked as yqp i , according to the formula: The ink bubble evaluation index Uqpz is obtained, where Indicates the average number of bubbles in the ink outlet of the printing production line during the current monitoring period, and η4 represents the set correction coefficient;

[0078] According to the formula: δ1 = Ujqz × a4 + Undp × a5 + Uqpz × a6, the ink quality impact value δ1 is obtained, where a4, a5 and a6 represent the weight coefficients of the ink viscosity evaluation index, ink concentration evaluation index and ink bubble evaluation index, respectively, and a4>a5>a6.

[0079] A3: Based on the received monitoring signals, the environmental status parameters of the ink outlet of the printing production line are monitored, and the environmental status of the ink outlet of the printing production line is analyzed and processed. The specific analysis process is as follows:

[0080] Detection points are arranged at the ink outlet of the printing production line. The specific arrangement is as follows: the center point of the ink outlet of the printing production line is used as the reference point to determine the monitoring range. A circle is drawn with a preset length as the radius. The area of ​​the circle is used as the monitoring range corresponding to the ink outlet of the printing production line. The monitoring range is then radially arranged. Starting from the reference point, several rays are radiated in all directions, and detection points are set on the rays to obtain each detection point.

[0081] The temperature of each detection point corresponding to the ink outlet end of the printing production line during the current monitoring period is monitored and obtained by the temperature sensor, and the maximum temperature, the middle temperature and the minimum temperature of each detection point are extracted and averaged, thereby obtaining the reference temperature of each detection point corresponding to the ink outlet end of the printing production line during the current monitoring period;

[0082] The maximum temperature, the middle temperature, the minimum temperature and the reference temperature of each detection point are marked as wdz j max 、wdz j mzx 、wdz j min and wdz j 参 , where the median temperature is expressed as arranging the temperatures of the detection points corresponding to the ink outlet end of the printing production line in the current monitoring period in ascending order, and extracting the median temperature in the sequence as the median temperature; according to the formula: Obtain the temperature evaluation index Hwdz at the ink outlet of the printing production line during the current monitoring period, where j represents the number of each detection point, and j = 1, 2, 3…n1, n1 represents the total number of detection point numbers, and η5, η6, and η7 represent the set correction coefficients respectively;

[0083] The humidity sensor is used to monitor the humidity of each detection point corresponding to each monitoring time point at the ink outlet end of the printing production line during the current monitoring period, and the humidity of each detection point corresponding to each monitoring time point at the ink outlet end of the printing production line during the current monitoring period is obtained. The average value is calculated to obtain the humidity of each monitoring time point at the ink outlet end of the printing production line during the current monitoring period, and recorded as sdzi ;

[0084] Extract the maximum humidity and minimum humidity from the humidity of each monitoring time point at the ink outlet of the printing production line during the current monitoring period, and record them as sdz max and sdz min , according to the formula: Obtain the humidity assessment index Hsdz at the ink outlet of the printing production line during the current monitoring period, where η8, η9, and η10 represent the set correction coefficients respectively;

[0085] According to the formula: The environmental impact value δ2 is obtained, wherein a7 and a8 represent weight coefficients of the temperature evaluation index and the humidity evaluation index respectively, and a7>a8.

[0086] A4: Based on the received monitoring signals, the equipment status parameters at the ink outlet of the printing production line are monitored, and the equipment status at the ink outlet of the printing production line is analyzed and processed. The specific analysis process is as follows:

[0087] By monitoring and acquiring the device status parameters of the ink outlet end of the printing production line during the current monitoring period, the device status parameters of the ink outlet end of the printing production line during the current monitoring period are obtained;

[0088] Extract the set operating time value, set temperature value, and set pressure value from the equipment status parameters at the ink outlet of the printing production line during the current monitoring period, and mark them as Sysz, Swdz, and Sylz respectively, according to the formula: Get the equipment impact value δ3, where Sysz * 、Swdz * and Sylz * represent the set reference operating time value, reference set temperature value and reference set pressure value respectively, a9, a10 and a11 represent the weight coefficients of the set operating time difference value, the set temperature difference value and the set pressure difference value respectively, and a11>a10>a9;

[0089] The set running time value refers to the running time of the equipment at the ink outlet end of the printing production line during the current monitoring period, that is, the cumulative running time of the equipment from startup to the current moment;

[0090] The set temperature value refers to the operating temperature of the equipment at the ink outlet of the printing production line during the current monitoring period, that is, the actual temperature of the relevant components of the ink outlet (such as ink rollers, heating devices, etc.);

[0091] The set pressure value refers to the working pressure of the equipment at the ink outlet end of the printing production line during the current monitoring period, that is, the pressure applied by the ink roller.

[0092] A5: Extract the values ​​of the ink quality impact value δ1, environmental impact value δ2, and equipment impact value δ3 at the ink outlet of the printing production line during the current monitoring period and perform normalization processing. The specific formula is: A comprehensive impact value YXZ is obtained, where λ1, λ2, and λ3 represent the impact factor coefficients of the set ink quality impact value δ1, environment impact value δ2, and equipment impact value δ3, respectively.

[0093] A6: Obtain the ink setting parameters of the ink outlet end of the printing production line during the current monitoring period, and analyze the ink setting calibration parameters of the ink outlet end of the printing production line during the current monitoring period based on the comprehensive impact value and ink setting parameters of the ink outlet end of the printing production line during the current monitoring period. The ink setting calibration parameters of the ink outlet end of the printing production line during the current monitoring period are obtained. The specific analysis process is as follows:

[0094] Matching the comprehensive impact value of the ink outlet end of the printing production line in the current monitoring period with the ink setting impact parameters corresponding to the set impact values ​​to obtain the ink setting impact parameters of the ink outlet end of the printing production line in the current monitoring period; subtracting the ink setting parameters of the ink outlet end of the printing production line in the current monitoring period from the ink setting impact parameters to obtain the difference between the ink setting parameters of the ink outlet end of the printing production line in the current monitoring period and the ink setting impact parameters, which is used as the ink setting calibration parameter of the ink outlet end of the printing production line in the current monitoring period;

[0095] Based on the ink setting calibration parameters at the ink outlet of the printing production line during the current monitoring period, corresponding control operations are performed.

[0096] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to specific embodiments. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A printing production line monitoring, control and management method based on artificial intelligence, characterized in that: The following steps are involved: A1: Monitor the status parameters of printed products at the finished product end of the printing production line to obtain font clarity, font feature value, and font color value, thereby determining a font status evaluation value. Based on the font status evaluation value, determine the printing abnormality status and generate a monitoring signal, and then execute A2-A4; The specific process of monitoring the status parameters of printed products at the finished product end of the printing production line is as follows: By collecting and analyzing the video of the printed product during the current monitoring period, the printed product image at each monitoring time point during the current monitoring period is obtained and marked as the printed product image to be inspected; Perform sharpness detection on the edges of fonts in the image of the printed product to be inspected to obtain the clarity of the fonts; The font appearance features in the printed product image to be inspected are extracted through image recognition, and the values ​​of the number of cracks, crack length and crack width are extracted and multiplied by the corresponding weight coefficients and then added to obtain the font appearance feature value; Using image recognition technology, the font area is extracted from the image of the printed product to be inspected, and color points are evenly distributed on the font area to obtain the color points in the font area. The chromaticity value of each color point in the font area is also extracted and compared with the set reference comparison range. If the chromaticity value of a color point is outside the set reference comparison interval, the color point is marked as an abnormal point. If the chromaticity value of a color point is within the set reference comparison interval, the color point is marked as a normal point. After completing the chromaticity analysis of all color points, integrate the abnormal points and normal points respectively, calculate and extract the values ​​of the abnormal area and the normal area, calculate the proportion, and obtain the font color value; A2: Based on the received monitoring signals, the ink characteristic parameters at the ink outlet of the printing production line are monitored to obtain the ink viscosity evaluation index, ink concentration evaluation index, and ink bubble evaluation index, thereby determining the ink quality impact value; A3: Based on the received monitoring signals, the environmental parameters at the ink outlet of the printing production line are monitored to obtain the temperature assessment index and humidity assessment index, thereby determining the environmental impact value; A4: Based on the received monitoring signals, the equipment status parameters at the ink outlet of the printing production line are monitored to obtain the set operating time value, set temperature value, and set pressure value, thereby determining the equipment impact value; A5: Extract the ink quality impact value, environmental impact value and equipment impact value to determine the comprehensive impact value; A6: Based on the comprehensive impact value of the ink outlet end of the printing production line and the ink setting parameters, the ink setting calibration parameters are analyzed to obtain the ink setting calibration parameters, and the control operation is performed accordingly.

2. The artificial intelligence-based printing production line monitoring, control and management method according to claim 1 is characterized in that: The specific process of determining the abnormal printing status is as follows: Extracting the font clarity, font feature value, and font color value of the printed product image to be inspected and performing normalization processing to obtain a font status evaluation value in the printed product image to be inspected; Comparing and analyzing the font status evaluation value in the printed product image to be inspected with a preset font status evaluation threshold, if the font status evaluation value in the printed product image to be inspected is less than the preset font status evaluation threshold, the printed product image to be inspected is determined to be in an abnormal state; The number of times an abnormal state is determined during the current monitoring period at the finished product end of the printing production line is counted to obtain the number of abnormal determinations during the current monitoring period at the finished product end of the printing production line, and the number of abnormal determinations during the current monitoring period at the finished product end of the printing production line is compared and analyzed with a preset number of abnormal determination thresholds. If the number of abnormal determinations during the current monitoring period at the finished product end of the printing production line is greater than or equal to the preset number of abnormal determination thresholds, the printed product status at the finished product end of the printing production line is determined to be a printing abnormal state.

3. The artificial intelligence-based printing production line monitoring, control and management method according to claim 1 is characterized in that: Monitor the ink characteristic parameters at the ink outlet of the printing production line. The specific process is as follows: By obtaining the shear stress and shear rate of the ink flow parameters at the ink outlet of the printing production line during the current monitoring period, the ink viscosity evaluation index Ujqz is determined accordingly; By monitoring the absorbance of the ink at the ink outlet end of the printing production line during the current monitoring period, the absorbance value of the ink at the ink outlet end of the printing production line during the current monitoring period is obtained; The standard curve is established by preparing a series of ink standard solutions of known concentrations and measuring the absorbance of these standard solutions at the selected wavelength. The absorbance of the standard solutions is plotted against the concentration, with the horizontal axis being the concentration and the vertical axis being the absorbance. The linear relationship between the absorbance and concentration is obtained. The standard curve formula is: Where m represents the slope, b represents the intercept, and ymn represents the concentration; Substitute the absorbance value of the ink at the ink outlet end of the printing production line during the current monitoring period into the standard curve formula to calculate the concentration of the ink at the ink outlet end of the printing production line during the current monitoring period, and determine the ink concentration evaluation index Undp based on this; The ink bubble evaluation index Uqpz is determined by obtaining the number of bubbles in the ink at the ink outlet of the printing production line during the current monitoring period.

4. The artificial intelligence-based printing production line monitoring, control and management method according to claim 3 is characterized in that: The formula for solving the ink quality impact value is: , the ink quality impact value δ1 is obtained, where a4, a5 and a6 represent the weight coefficients of the ink viscosity evaluation index, ink concentration evaluation index and ink bubble evaluation index, respectively, and a4>a5>a6.

5. The printing production line monitoring, control and management method based on artificial intelligence according to claim 1 is characterized in that: Monitor the environmental parameters of the ink outlet of the printing production line. The specific process is as follows: Detection points are arranged at the ink outlet of the printing production line. The specific arrangement is as follows: the center point of the ink outlet of the printing production line is used as the reference point to determine the monitoring range. A circle is drawn with a preset length as the radius. The area of ​​the circle is used as the monitoring range corresponding to the ink outlet of the printing production line. The monitoring range is then radially arranged. Starting from the reference point, several rays are radiated in all directions, and detection points are set on the rays to obtain each detection point. By obtaining the temperature of each detection point corresponding to the ink outlet end of the printing production line during the current monitoring period, and extracting the maximum temperature, the middle temperature and the minimum temperature of each detection point and calculating the average value, the reference temperature of each detection point corresponding to the ink outlet end of the printing production line during the current monitoring period is obtained; Determine the temperature evaluation index Hwdz based on the maximum temperature, the middle temperature, the minimum temperature and the reference temperature of each detection point corresponding to the ink outlet end of the printing production line during the current monitoring period; The median temperature is represented by arranging the temperatures of the detection points corresponding to the ink outlet end of the printing production line during the current monitoring period in ascending order, and extracting the median temperature in the sequence as the median temperature; The humidity at each monitoring time point of the ink outlet end of the printing production line during the current monitoring period is obtained by obtaining the humidity at each detection point corresponding to each monitoring time point and calculating the average thereof, thereby obtaining the humidity at each monitoring time point of the ink outlet end of the printing production line during the current monitoring period; The maximum humidity and minimum humidity are extracted from the humidity at each monitoring time point at the ink outlet end of the printing production line during the current monitoring period, thereby determining the humidity evaluation index Hsdz.

6. The artificial intelligence-based printing production line monitoring, control and management method according to claim 5 is characterized in that: The formula for solving the environmental impact value is: , the environmental impact value δ2 is obtained, where a7 and a8 represent the weight coefficients of the temperature evaluation index and the humidity evaluation index respectively, and a7>a8.

7. The printing production line monitoring, control and management method based on artificial intelligence according to claim 1 is characterized in that: The specific process of solving the equipment impact value is as follows: By obtaining the equipment status parameters of the ink outlet end of the printing production line during the current monitoring period, and extracting the set operating time value Sysz, set temperature value Swdz and set pressure value Sylz from them, according to the formula: , we get the equipment impact value δ3, where Sysz * 、Swdz * and Sylz * represent the set reference operating time value, reference set temperature value and reference set pressure value respectively, a9, a10 and a11 represent the weight coefficients of the set operating time difference value, the set temperature difference value and the set pressure difference value respectively, and a11>a10>a9; The set operation time value refers to the operating time of the equipment at the ink outlet end of the printing production line during the current monitoring period; The set temperature value refers to the operating temperature of the equipment at the ink outlet of the printing production line during the current monitoring period; The set pressure value refers to the working pressure of the equipment at the ink outlet end of the printing production line during the current monitoring period.

8. The method for monitoring, controlling and managing a printing production line based on artificial intelligence according to claim 3, characterized in that: The formula for solving the comprehensive impact value is: , and obtain the comprehensive impact value YXZ, where λ1, λ2, and λ3 represent the impact factor coefficients of the set ink quality impact value δ1, environmental impact value δ2, and equipment impact value δ3, respectively.

9. The printing production line monitoring, control and management method based on artificial intelligence according to claim 1 is characterized in that: The specific process of setting and adjusting the parameters for the ink at the ink outlet of the printing production line is as follows: Matching the comprehensive impact value of the ink outlet end of the printing production line during the current monitoring period with the ink setting impact parameters corresponding to the set impact values ​​to obtain the ink setting impact parameters of the ink outlet end of the printing production line during the current monitoring period; Obtain the ink setting parameters of the ink outlet end of the printing production line during the current monitoring period, and subtract the ink setting parameters from the ink setting influencing parameters to obtain the difference between the ink setting parameters of the ink outlet end of the printing production line during the current monitoring period and the ink setting influencing parameters, which are used as the ink setting calibration parameters of the ink outlet end of the printing production line during the current monitoring period.

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