Safety control and early warning system for silk-screen printing

Abstract

The invention provides a safety control and early warning system for silk-screen printing, and belongs to the technical field of control and early warning. The demand module is used for determining a target function of silk-screen printing and a printing parameter type needing to be monitored based on the target function according to a silk-screen printing process; the data acquisition module is used for acquiring real-time printing data in the printing process in real time on the basis of installing a sensor consistent with the printing parameter type; the analysis module is used for analyzing safety risk scores of silk-screen printing after standardizing the real-time printing data, and the safety risk scores comprise a precision safety risk score and an operation safety risk score; the control module is used for judging the early warning level of the safety risk score and generating a control instruction; and the optimization module is used for executing the control instruction to obtain a silk-screen printing safety control result, comparing the silk-screen printing safety control result with a preset control result and optimizing the control process. Printing stability and product quality are improved, production efficiency is optimized, and faults and cost are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of control and early warning, and in particular to a safety control and early warning system for screen printing. Background Art

[0002] At present, screen printing is a widely used printing technology, widely used in electronics, textiles, packaging and other industries. Although screen printing is efficient and precise, in the actual production process, screen printing control is inaccurate and safety warnings are insufficient, resulting in low printing efficiency and inaccurate printing results.

[0003] Therefore, the present invention proposes a safety control and early warning system for screen printing. Summary of the invention

[0004] The present invention provides a screen printing safety control and early warning system, which is used to determine the target function and monitoring parameters of screen printing through a demand module, a data acquisition module to obtain printing data in real time, an analysis module to calculate the safety risk score, a control module to issue an early warning and generate a control instruction, and an optimization module to compare and optimize control results, so as to improve the safety and accuracy of the printing process.

[0005] In one aspect, the present invention provides a screen printing safety control and early warning system, comprising: Demand module: according to the screen printing process, determine the target function of screen printing and the type of printing parameters that need to be monitored based on the target function; Data acquisition module: Based on the installation of sensors consistent with the printing parameter type, real-time printing data during the printing process is collected in real time; Analysis module: after standardizing the real-time printing data, analyzing the safety risk score of screen printing, wherein the safety risk score includes: accuracy safety risk score and operation safety risk score; Control module: determines the warning level of the security risk score and generates control instructions; Optimization module: executes control instructions to obtain screen printing safety control results, compares them with preset control results, and optimizes the control process.

[0006] On the other hand, the demand module includes: Process determination unit: determines the screen printing process based on the printing purpose; Functional indicator unit: Determine the target function of printing according to the screen printing process, and screen the types of printing parameters that need to be monitored based on the function-parameter library.

[0007] On the other hand, the data acquisition module comprises: Sensor selection unit: according to the target function of screen printing, selects the device group to be monitored in screen printing, obtains the type to be monitored of any device in the device group from the printing parameter type to be monitored, and then selects the sensor type consistent with each type to be monitored; Position unit: According to the equipment construction diagram of each equipment in the equipment group, the installation position of the corresponding sensor under the sensor type consistent with the corresponding equipment is selected and marked to obtain the sensor installation position layout diagram.

[0008] 4. A screen printing safety control and early warning system according to claim 3, characterized in that the data acquisition module comprises: A sensor matching unit: configuring a unique first number for each sensor installation position in the sensor installation position layout diagram and configuring a unique second number for each sensor; According to the corresponding relationship of the installed numbers, sensors are configured for the corresponding devices, and real-time printing data during the printing process is collected in real time.

[0009] On the other hand, the analysis module comprises: Standardization unit: acquires real-time printing data of all devices, and standardizes the real-time printing data according to the printing parameter type to obtain standard printing data; Alignment accuracy risk unit: if the printing parameter type belongs to the accuracy control type, obtain CCD fixed-point positioning monitoring parameters, and obtain CCD printing image parameters, construct a first screen-printed image based on the printing image parameters, and grayscale process the first image to obtain a second image; Using an edge recognition algorithm to identify pixels with uneven grayscale distribution in the second image, and marking them as edge points, to obtain a third image containing all edge points; The third image and the screen printing standard image are mapped into the standard coordinate system, the grayscale mapping error between the third image and the screen printing standard image is determined, and the accuracy safety risk score of the screen printing is obtained: ;in, represents the accuracy security risk score of the third image, represents the horizontal grayscale value of the i-th pixel of the third image, represents the vertical grayscale value of the i-th pixel of the third image, represents the lateral fractional mapping coefficient, represents the vertical fractional mapping coefficient, represents the transpose of the reference transformation matrix, represents the lateral gain function, represents the longitudinal gain function, m represents the preset standard intercept of the CCD fixed-point positioning monitoring parameter, Indicates the preset standard angle of the CCD fixed-point positioning monitoring parameters, n indicates that the third image has a total of n pixels, Represents the horizontal grayscale value of the i-th pixel of the standard image. Represents the vertical grayscale value of the i-th pixel in the standard image.

[0010] On the other hand, the analysis module further includes: Operation risk unit: If the printing parameter type belongs to the operation parameter type, obtain the operation parameter standard printing data, and obtain the operation safety risk score as follows: ;in, represents the operational safety risk score, represents the preset risk impact coefficient of the jth operating parameter, k represents a total of k operating parameters, represents the standard printing data value of the jth operating parameter at the pth time node, where p represents a total of p time nodes. represents the pth time node of the jth operating parameter, Indicates the lowest valley parameter value at the b-th time node, represents the error coefficient, represents the standard time interval, represents the j-th preset standard parameter value, ( ) represents the risk score conversion function.

[0011] On the other hand, the control module comprises: Risk assessment unit: Generates a risk comparison table based on the historical recommendations of the expert database and the warning level assessed according to the type of security risk score; Obtain the type of the security risk score of the screen printing, and obtain the risk warning level according to the risk comparison table; Control unit: Generates a control adjustment accuracy standard range for the corresponding equipment according to the type of safety risk score and the risk warning level, obtains the deviation between the control adjustment accuracy standard range and the actual output, and obtains the adjustment proportional coefficient according to the deviation combined with the control algorithm; The proportional coefficient, deviation and standard control coefficient are combined to form a control model, the control output of all devices is calculated, and the control output is converted into control instructions for corresponding devices through the control system.

[0012] On the other hand, the optimization module further includes: Execution unit: distributes all control instructions to the corresponding devices for execution, and obtains the safety control results of screen printing after the devices execute them; Optimization unit: compare the safety control result with the preset target value to obtain the control error; analyze and determine the control link with problems according to the characteristics of the error, and adjust the control model.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides a screen printing safety control and early warning system, which is used to determine the target function and monitoring parameters of screen printing through a demand module, a data acquisition module to obtain printing data in real time, an analysis module to calculate the safety risk score, a control module to issue an early warning and generate a control instruction, and an optimization module to compare and optimize control results, so as to improve the safety and accuracy of the printing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the present invention or 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 some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a structural schematic diagram of a screen printing safety control and early warning system provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are 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 creative work are within the scope of protection of the present invention.

[0017] Embodiment 1: like Figure 1 As shown, a screen printing safety control and early warning system provided by an embodiment of the present invention includes: Demand module: according to the screen printing process, determine the target function of screen printing and the type of printing parameters that need to be monitored based on the target function; Data acquisition module: Based on the installation of sensors consistent with the printing parameter type, real-time printing data during the printing process is collected in real time; Analysis module: after standardizing the real-time printing data, analyzing the safety risk score of screen printing, wherein the safety risk score includes: accuracy safety risk score and operation safety risk score; Control module: determines the warning level of the security risk score and generates control instructions; Optimization module: executes control instructions to obtain screen printing safety control results, compares them with preset control results, and optimizes the control process.

[0018] In this embodiment, screen printing is a commonly used printing technology, which forms patterns or texts by transferring ink to the surface of a substrate through a printing screen (usually made of a screen material).

[0019] In this embodiment, the process refers to a series of specific operation steps and methods, including: designing patterns, selecting appropriate materials and inks, setting screens, adjusting printing parameters, etc.

[0020] In this embodiment, the target function refers to the key goals that are desired to be achieved during the screen printing process, including: high-precision printing, stable generation process, printing quality control, etc.

[0021] In this embodiment, the printing parameter type refers to key parameters that need to be monitored in real time during the screen printing process, including: screen tension, temperature, pressure, speed, flow rate, etc.

[0022] In this embodiment, the sensor is a device used to collect physical quantities consistent with the printing parameter type in real time, including tension, pressure, temperature, flow rate and the like.

[0023] In this embodiment, the real-time printing data refers to the data on various key parameters of the printing process that are continuously collected and transmitted by the sensor during the screen printing process, including tension, pressure, temperature, flow rate, etc.

[0024] In this embodiment, standardization refers to the process of converting the printing data collected in real time into a unified and standardized format and unit.

[0025] In this embodiment, the safety risk score is an indicator used to measure and evaluate the potential risks in the process during the screen printing process.

[0026] In this embodiment, the precision safety risk score refers to an indicator of the risk caused by deviation in printing precision during the printing process.

[0027] In this embodiment, the operation safety risk score is an indicator for evaluating the risk level associated with the equipment operation status, operating environment and safety during the screen printing process.

[0028] In this embodiment, the warning level refers to the risk level of the current process.

[0029] In this embodiment, the control instruction refers to a specific operation instruction for adjusting the printing process issued by the system according to the security risk score and warning level provided by the analysis module.

[0030] In this embodiment, the safety control result refers to the result of parameters such as safety, accuracy, and quality during the printing process achieved after the control instruction generated by the control module is executed.

[0031] In this embodiment, the preset control result refers to an ideal result defined according to pre-set goals, standards and expected performance indicators during the screen printing process.

[0032] In this embodiment, optimization refers to adjusting and improving various parameters and operations in the printing process by executing control instructions to ensure that the final result is closer to the preset control target.

[0033] The working principle and beneficial effects of the above technical solution are: by real-time monitoring of key parameters in the printing process, analyzing safety risks and generating early warning instructions, optimizing the control process, improving the safety and accuracy of screen printing, reducing the occurrence of failures, and ensuring production stability and high-quality output.

[0034] Embodiment 2: Based on the above embodiment 1, the demand module includes: Process determination unit: determines the screen printing process based on the printing purpose; Functional indicator unit: Determine the target function of printing according to the screen printing process, and screen the types of printing parameters that need to be monitored based on the function-parameter library.

[0035] In this embodiment, the printing purpose refers to achieving a specific production goal or requirement, such as printing quality, production efficiency, printing materials, cost, etc.

[0036] In this embodiment, the function-parameter library is a database containing the relationship between printing process and target function.

[0037] The working principle and beneficial effects of the above technical solution are: determine the process flow by clarifying the printing purpose, and screen key monitoring parameters in combination with the function-parameter library to ensure precise control and optimization of the printing process, improve production efficiency and product quality, and reduce the unqualified rate.

[0038] Embodiment 3: Based on the above embodiment 2, the data acquisition module includes: Sensor selection unit: according to the target function of screen printing, selects the device group to be monitored in screen printing, obtains the type to be monitored of any device in the device group from the printing parameter type to be monitored, and then selects the sensor type consistent with each type to be monitored; Position unit: According to the equipment construction diagram of each equipment in the equipment group, the installation position of the corresponding sensor under the sensor type consistent with the corresponding equipment is selected and marked to obtain the sensor installation position layout diagram.

[0039] In this embodiment, the device group refers to an overall collection consisting of multiple devices or components.

[0040] In this embodiment, the equipment includes: a printing press, a drying equipment, a transmission system, etc.

[0041] In this embodiment, the device structure diagram is a detailed technical schematic diagram showing the various components and modules of the device.

[0042] In this embodiment, the installation position refers to the specific position where the sensor is installed in each device group to monitor various parameters of the device.

[0043] In this embodiment, the sensor installation position layout diagram is a diagram that details the installation positions of each sensor in the device.

[0044] The working principle and beneficial effects of the above technical solution are: by selecting monitoring equipment according to the target function, matching the sensor type and rationally arranging the installation position, ensuring that the sensor accurately collects the required data, improving the monitoring accuracy and efficiency of the screen printing process, and optimizing production quality and stability.

[0045] Embodiment 4: Based on the above embodiment 2, the data acquisition module includes: A sensor matching unit: configuring a unique first number for each sensor installation position in the sensor installation position layout diagram and configuring a unique second number for each sensor; According to the corresponding relationship of the installed numbers, sensors are configured for the corresponding devices, and real-time printing data during the printing process is collected in real time.

[0046] In this embodiment, the first number is a unique number that identifies the position of the sensor in the device.

[0047] In this embodiment, the second number is a unique number for identifying the sensor.

[0048] The working principle and beneficial effects of the above technical solution are: by configuring a unique number for each sensor, ensuring the precise matching of the sensor and the equipment, collecting data during the printing process in real time, improving data tracking and management efficiency, and providing reliable data support for subsequent analysis and optimization.

[0049] Embodiment 5: Based on the above embodiment 1, the analysis module includes: Standardization unit: acquires real-time printing data of all devices, and standardizes the real-time printing data according to the printing parameter type to obtain standard printing data; Alignment accuracy risk unit: if the printing parameter type belongs to the accuracy control type, obtain CCD fixed-point positioning monitoring parameters, and obtain CCD printing image parameters, construct a first screen-printed image based on the printing image parameters, and grayscale process the first image to obtain a second image; Using an edge recognition algorithm to identify pixels with uneven grayscale distribution in the second image, and marking them as edge points, to obtain a third image containing all edge points; The third image and the screen printing standard image are mapped into the standard coordinate system, the grayscale mapping error between the third image and the screen printing standard image is determined, and the accuracy safety risk score of the screen printing is obtained: ;in, represents the accuracy security risk score of the third image, represents the horizontal grayscale value of the i-th pixel of the third image, represents the vertical grayscale value of the i-th pixel of the third image, represents the lateral fractional mapping coefficient, represents the vertical fractional mapping coefficient, represents the transpose of the reference transformation matrix, represents the lateral gain function, represents the longitudinal gain function, m represents the preset standard intercept of the CCD fixed-point positioning monitoring parameter, Indicates the preset standard angle of the CCD fixed-point positioning monitoring parameters, n indicates that the third image has a total of n pixels, Represents the horizontal grayscale value of the i-th pixel of the standard image. Represents the vertical grayscale value of the i-th pixel in the standard image.

[0050] In this embodiment, the standard printing data refers to data obtained after standardization processing based on the real-time printing data of the device.

[0051] In this embodiment, the CCD fixed-point positioning monitoring parameters refer to parameters acquired by the CCD sensor for determining the positioning accuracy and position of the printed image, including positioning parameters, rotation angles, and the like.

[0052] In this embodiment, the CCD printing image parameters refer to a series of parameters related to the screen printing image acquired by the CCD sensor, including: a preset standard intercept, a preset standard angle, and the like.

[0053] In this embodiment, the first image is an image constructed based on CCD fixed-point positioning monitoring parameters and CCD printing image parameters.

[0054] In this embodiment, grayscale processing is a process of converting a color image into a grayscale image by image processing, and converting the color value of each pixel (usually the value of the three RGB channels) into a value representing brightness.

[0055] In this embodiment, the second image is an image obtained by performing grayscale processing on the first image.

[0056] In this embodiment, the edge recognition algorithm is an image processing technology used to detect areas in an image where grayscale changes significantly, that is, edges in the image.

[0057] In this embodiment, the edge point refers to a pixel point in the image whose gray value changes significantly.

[0058] In this embodiment, the third image is an image obtained by identifying all edge points of the second image.

[0059] In this embodiment, the grayscale mapping error refers to the grayscale value difference between the third image and the screen printing standard image during the image comparison process.

[0060] In this embodiment, the screen printing standard image represents the best standard printing quality in the screen printing process.

[0061] In this embodiment, the standard coordinate system provides a unified, fixed reference point or spatial framework in which the coordinates of all images are mapped to the same location.

[0062] In this embodiment, the grayscale value is a numerical value used to represent the brightness or color depth of an image in image processing.

[0063] In this embodiment, the preset standard intercept is used to describe the lateral or longitudinal deviation when the CCD sensor locates the image.

[0064] In this embodiment, the preset standard angle represents the angle difference between the CCD image sensor and the standard image reference system.

[0065] The working principle and beneficial effects of the above technical solution are: through standardized printing data and precision risk assessment, using CCD positioning and grayscale processing technology, identifying edge points in the image, calculating grayscale mapping errors and evaluating precision risks, effectively monitoring screen printing accuracy, and improving production quality and stability.

[0066] Embodiment 6: Based on the above embodiment 5, the analysis module further includes: Operation risk unit: If the printing parameter type belongs to the operation parameter type, obtain the operation parameter standard printing data, and obtain the operation safety risk score as follows: ;in, represents the operational safety risk score, represents the preset risk impact coefficient of the jth operating parameter, k represents a total of k operating parameters, represents the standard printing data value of the jth operating parameter at the pth time node, where p represents a total of p time nodes. represents the pth time node of the jth operating parameter, Indicates the lowest valley parameter value at the b-th time node, represents the error coefficient, represents the standard time interval, represents the j-th preset standard parameter value, ( ) represents the risk score conversion function.

[0067] In this embodiment, the lowest valley parameter value refers to the lowest value of a specific parameter in a certain time interval in the operating parameter data sequence.

[0068] The working principle and beneficial effects of the above technical solution are: by analyzing the standard data of operating parameters, combining the preset risk coefficient and error coefficient, calculating the operation safety risk score, and evaluating the potential risks in the operation process in real time, ensuring the stable operation of the equipment, and improving production safety and efficiency.

[0069] Embodiment 7: Based on the above embodiment 1, the control module includes: Risk assessment unit: Generates a risk comparison table based on the historical recommendations of the expert database and the warning level assessed according to the type of security risk score; Obtain the type of the security risk score of the screen printing, and obtain the risk warning level according to the risk comparison table; Control unit: Generates a control adjustment accuracy standard range for the corresponding equipment according to the type of safety risk score and the risk warning level, obtains the deviation between the control adjustment accuracy standard range and the actual output, and obtains the adjustment proportional coefficient according to the deviation combined with the control algorithm; The proportional coefficient, deviation and standard control coefficient are combined to form a control model, the control output of all devices is calculated, and the control output is converted into control instructions for corresponding devices through the control system.

[0070] In this embodiment, the expert database refers to a database containing a large amount of experience knowledge, professional opinions and historical data.

[0071] In this embodiment, historical suggestions refer to some guiding opinions and recommendations for security risk assessment and control adjustment obtained through expert database, data analysis, historical events and experience accumulation.

[0072] In this embodiment, the risk comparison table is a table that maps and determines corresponding warning levels according to different types of risk scores.

[0073] In this embodiment, the control adjustment accuracy standard range refers to the range of adjustment accuracy required by the control unit for each device or process under the risk warning level generated according to the safety risk assessment.

[0074] In this embodiment, the deviation refers to the difference between the actual output and the target output.

[0075] In this embodiment, the proportionality coefficient is a parameter in a control system, which is used to adjust the behavior of the device according to the deviation of the system (the difference between the actual output and the target output) to reduce the deviation and improve the accuracy.

[0076] In this embodiment, the control algorithm is a mathematical method used to calculate and adjust the device control output based on the deviation, adjustment proportionality coefficient, risk warning level and other relevant factors.

[0077] In this embodiment, the control model is a mathematical framework or algorithm that is designed to calculate the control output required by the device based on the input deviation, risk warning level, and adjustment proportionality coefficient.

[0078] In this embodiment, the standard control coefficient refers to a parameter used in a control system to describe the control accuracy, response speed or system stability of a device.

[0079] In this embodiment, the control output is the final result of the control model.

[0080] The working principle and beneficial effects of the above technical solution are: through the safety risk assessment and early warning mechanism, combined with the control algorithm to generate the accuracy adjustment range, adjust the equipment output in real time, ensure the accuracy and stability in the screen printing process, improve production efficiency and quality, reduce risks and optimize control accuracy.

[0081] Embodiment 8: Based on the above embodiment 7, the optimization module further includes: Execution unit: distributes all control instructions to the corresponding devices for execution, and obtains the safety control results of screen printing after the devices execute them; Optimization unit: compare the safety control result with the preset target value to obtain the control error; analyze and determine the control link with problems according to the characteristics of the error, and adjust the control model.

[0082] In this embodiment, the characteristic refers to the law and characteristics of the error in the process of change, such as error convergence, error frequency characteristics, error phase linearity characteristics, etc.

[0083] In this embodiment, the control link refers to each interactive part between the system input, output and feedback in the control system.

[0084] The working principle and beneficial effects of the above technical solution are: through the execution and optimization unit, the control instructions in the screen printing process are adjusted in real time, the safety control results are compared with the target values, the errors are analyzed and the control model is optimized, the system accuracy and stability are improved, and the production quality and process control capabilities are effectively improved.

[0085] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A screen printing safety control and early warning system, characterized in that: include: Demand module: according to the screen printing process, determine the target function of screen printing and the type of printing parameters that need to be monitored based on the target function; Data acquisition module: Based on the installation of sensors consistent with the printing parameter type, real-time printing data during the printing process is collected in real time; Analysis module: after standardizing the real-time printing data, analyzing the safety risk score of screen printing, wherein the safety risk score includes: accuracy safety risk score and operation safety risk score; Control module: determines the warning level of the security risk score and generates control instructions; Optimization module: executes control instructions to obtain screen printing safety control results, compares them with preset control results, and optimizes the control process.

2. A screen printing safety control and early warning system according to claim 1, characterized in that: The demand module includes: Process determination unit: determines the screen printing process based on the printing purpose; Functional indicator unit: Determine the target function of printing according to the screen printing process, and screen the types of printing parameters that need to be monitored based on the function-parameter library.

3. A screen printing safety control and early warning system according to claim 2, characterized in that: The data acquisition module comprises: Sensor selection unit: according to the target function of screen printing, selects the device group to be monitored in screen printing, obtains the type to be monitored of any device in the device group from the printing parameter type to be monitored, and then selects the sensor type consistent with each type to be monitored; Position unit: According to the equipment construction diagram of each equipment in the equipment group, the installation position of the corresponding sensor under the sensor type consistent with the corresponding equipment is selected and marked to obtain the sensor installation position layout diagram.

4. A screen printing safety control and early warning system according to claim 3, characterized in that: The data acquisition module comprises: A sensor matching unit: configuring a unique first number for each sensor installation position in the sensor installation position layout diagram and configuring a unique second number for each sensor; According to the corresponding relationship of the installed numbers, sensors are configured for the corresponding devices, and real-time printing data during the printing process is collected in real time.

5. A screen printing safety control and early warning system according to claim 1, characterized in that: The analysis module comprises: Standardization unit: acquires real-time printing data of all devices, and standardizes the real-time printing data according to the printing parameter type to obtain standard printing data; Positioning accuracy risk unit: if the printing parameter type belongs to the accuracy control type, obtain CCD fixed-point positioning monitoring parameters, and obtain CCD printing image parameters, construct a first screen-printed image based on the printing image parameters, and grayscale process the first image to obtain a second image; Using an edge recognition algorithm to identify pixels with uneven grayscale distribution in the second image, and marking them as edge points, to obtain a third image containing all edge points; The third image and the screen printing standard image are mapped into the standard coordinate system, the grayscale mapping error between the third image and the screen printing standard image is determined, and the accuracy safety risk score of the screen printing is obtained: ;in, represents the accuracy security risk score of the third image, represents the horizontal grayscale value of the i-th pixel of the third image, represents the vertical grayscale value of the i-th pixel of the third image, represents the lateral fractional mapping coefficient, represents the vertical fractional mapping coefficient, represents the transpose of the reference transformation matrix, represents the lateral gain function, represents the longitudinal gain function, m represents the preset standard intercept of the CCD fixed-point positioning monitoring parameter, Indicates the preset standard angle of the CCD fixed-point positioning monitoring parameters, n indicates that the third image has a total of n pixels, Represents the horizontal grayscale value of the i-th pixel of the standard image. Represents the vertical grayscale value of the i-th pixel in the standard image.

6. A screen printing safety control and early warning system according to claim 5, characterized in that: The analysis module further includes: Operation risk unit: If the printing parameter type belongs to the operation parameter type, obtain the operation parameter standard printing data, and obtain the operation safety risk score as follows: ;in, represents the operational safety risk score, represents the preset risk impact coefficient of the jth operating parameter, k represents a total of k operating parameters, represents the standard printing data value of the jth operating parameter at the pth time node, where p represents a total of p time nodes. represents the pth time node of the jth operating parameter, Indicates the lowest valley parameter value at the b-th time node, represents the error coefficient, represents the standard time interval, represents the j-th preset standard parameter value, ( ) represents the risk score conversion function.

7. The screen printing safety control and early warning system according to claim 1, characterized in that: The control module comprises: Risk assessment unit: Generates a risk comparison table based on historical recommendations from the expert database and the warning level assessed according to the type of security risk score; Obtain the type of the security risk score of the screen printing, and obtain the risk warning level according to the risk comparison table; Control unit: Generates a control adjustment accuracy standard range for the corresponding equipment according to the type of safety risk score and the risk warning level, obtains the deviation between the control adjustment accuracy standard range and the actual output, and obtains the adjustment proportional coefficient according to the deviation combined with the control algorithm; The proportional coefficient, deviation and standard control coefficient are combined to form a control model, the control output of all devices is calculated, and the control output is converted into control instructions for corresponding devices through the control system.

8. A screen printing safety control and early warning system according to claim 7, characterized in that: The optimization module further includes: Execution unit: distributes all control instructions to the corresponding devices for execution, and obtains the safety control results of screen printing after the devices execute them; Optimization unit: compare the safety control result with the preset target value to obtain the control error; analyze and determine the control link with problems according to the characteristics of the error, and adjust the control model.

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