Seat belt thermal transfer printing detection and early warning method, system, medium and equipment

Abstract

The present application provides a safety belt thermal transfer printing detection and early warning method, system, medium and equipment, which relate to the field of webbing transfer technology. The present application achieves parameter adaptation for safety belts of different materials by obtaining the material property information of the safety belt to be printed and determining the first thermal transfer parameter, combining the second thermal transfer parameter of the standard webbing and the corresponding standard chromaticity difference. Secondly, by comparing the first thermal transfer parameter with the second thermal transfer parameter, and combining the standard chromaticity difference to determine the expected chromaticity difference, this step further improves the accuracy of the expected standard. Then, a method of obtaining the ribbon image after the thermal transfer operation and determining the actual chromaticity difference is adopted, which avoids the problem that the direct detection of the printing effect may be affected by external factors such as ambient light. Finally, by comparing the actual chromaticity difference with the expected chromaticity difference, a warning message is generated when the actual value is less than the expected value, thereby achieving accurate warning based on ribbon data.

Description

Technical Field

[0001] The present application relates to the field of webbing transfer technology, and in particular to a safety belt thermal transfer printing detection and early warning method, system, medium and equipment. Background Art

[0002] In the production process of seat belts, thermal transfer technology is often used for printing on seat belts. Thermal transfer technology is a printing method that transfers graphic information to the surface of the substrate through heat energy. Its principle is to use a heated print head to melt the color material on the ribbon and transfer it to the surface of the seat belt, thereby forming a clear and lasting printing effect. This technology has the advantages of simple operation, high printing quality, and a wide range of applicable materials, so it is widely used in the production of seat belts.

[0003] As a key safety protection device, seat belts have the physical characteristics of being thick and tough. At the same time, considering that seat belts need to withstand frequent friction and environmental factors during use, they must also have good wear resistance. These characteristics place extremely high demands on the printing quality of seat belts. The printing must not only be clear and legible, but also have long-term wear resistance and weather resistance to ensure that it remains clear and readable throughout the product life cycle. Therefore, in order to ensure the printing quality of seat belts, it is necessary to monitor the printing effect in real time to promptly discover and solve possible problems.

[0004] In related technologies, image recognition technology is often used to detect printing effects. This method directly detects whether the color depth of the printed font meets the printing standard to judge the quality of the printing effect. However, this method has some limitations in practical applications. First, it is easily affected by changes in ambient light, which may lead to unstable detection results. Secondly, the accuracy of image recognition technology itself is also affected by many factors, such as image resolution, recognition algorithm performance, etc. These factors may lead to inaccurate detection of the actual printing effect of the seat belt, and inability to achieve accurate quality warning. Summary of the invention

[0005] The present application provides a seat belt thermal transfer printing detection and early warning method, system, medium and equipment, which can improve the accuracy of the seat belt printing effect early warning.

[0006] In a first aspect, the present application provides a safety belt thermal transfer printing detection and early warning method, the method comprising:

[0007] Acquire material property information of the seat belt to be printed, and determine the first thermal transfer parameters required for the seat belt to be printed;

[0008] Acquire a second thermal transfer parameter of the standard ribbon and a standard chromaticity difference value of the ribbon corresponding to the second thermal transfer parameter;

[0009] Determining an expected chromaticity difference value of the ribbon corresponding to the seat belt to be printed according to a comparison result of the first thermal transfer parameter and the second thermal transfer parameter of the standard ribbon and the standard chromaticity difference value;

[0010] Acquire a ribbon image of the safety belt to be printed after a thermal transfer operation, and determine an actual chromaticity difference value corresponding to the ribbon image;

[0011] When it is detected that the actual chromaticity difference value is less than the expected chromaticity difference value, a warning message is generated.

[0012] By adopting the above technical solution, the material property information of the seat belt to be printed is obtained and the first thermal transfer parameter is determined. Combined with the second thermal transfer parameter of the standard webbing and the corresponding standard chromaticity difference, the parameter adaptation of seat belts of different materials is achieved. Secondly, by comparing the first thermal transfer parameter with the second thermal transfer parameter and combining the standard chromaticity difference to determine the expected chromaticity difference, this step further improves the accuracy of the expected standard. Then, a method is adopted to obtain the ribbon image after the thermal transfer operation and determine the actual chromaticity difference, avoiding the problem that the direct detection of the printing effect may be affected by external factors such as ambient light. Finally, by comparing the actual chromaticity difference with the expected chromaticity difference, a warning message is generated when the actual value is less than the expected value, realizing an accurate warning based on the ribbon data.

[0013] Optionally, the step of determining the expected chromaticity difference of the ribbon corresponding to the seat belt to be printed according to the comparison result of the first thermal transfer parameter and the second thermal transfer parameter of the standard ribbon and the standard chromaticity difference includes:

[0014] Comparing the first thermal transfer parameter with the second thermal transfer parameter of the standard ribbon to obtain a temperature comparison result, a pressure comparison result, and a time comparison result;

[0015] Respectively determine a first chromaticity influence value of the temperature comparison result on the color ribbon, a second chromaticity influence value of the pressure comparison result on the color ribbon, and a third chromaticity influence value of the duration comparison result on the color ribbon;

[0016] The first chromaticity influence value, the second chromaticity influence value, the third chromaticity influence value and the standard chromaticity difference value are integrated to determine an expected chromaticity difference value of the color ribbon corresponding to the safety belt to be printed.

[0017] By adopting the above technical solution, the expected chromaticity difference of the ribbon corresponding to the seat belt to be printed is determined by integrating the first chromaticity influence value, the second chromaticity influence value, the third chromaticity influence value and the standard chromaticity difference value. This integration method not only considers the individual influence of each parameter, but also considers their combined effect, and at the same time takes the standard chromaticity difference value as a benchmark, so that the expected chromaticity difference value finally determined is more accurate and reliable.

[0018] Optionally, the respectively determining a first chromaticity influence value of the temperature comparison result on the color ribbon, a second chromaticity influence value of the pressure comparison result on the color ribbon, and a third chromaticity influence value of the duration comparison result on the color ribbon includes:

[0019] Acquire historical thermal transfer parameters of a thermal transfer device and corresponding historical chromaticity differences, and construct an influence curve between the historical thermal transfer parameters and the historical chromaticity differences, wherein the historical thermal transfer parameters include historical temperature thermal transfer parameters, historical pressure thermal transfer parameters, and historical duration thermal transfer parameters;

[0020] The temperature comparison result, the pressure comparison result and the duration comparison result are respectively input into the influence curve to obtain a first chromaticity influence value of the temperature comparison result on the color band, a second chromaticity influence value of the pressure comparison result on the color band, and a third chromaticity influence value of the duration comparison result on the color band.

[0021] By adopting the above technical solution, the influence curve between the historical thermal transfer parameters and the historical chromaticity difference values ​​is constructed using these historical data. This step converts the discrete historical data into a continuous functional relationship, so that the chromaticity influence of any thermal transfer parameter can be accurately estimated. Finally, by inputting the temperature comparison results, pressure comparison results, and duration comparison results into the corresponding influence curves, the first chromaticity influence value of the temperature comparison result on the color ribbon, the second chromaticity influence value of the pressure comparison result on the color ribbon, and the third chromaticity influence value of the duration comparison result on the color ribbon are obtained. This method based on historical data and influence curves not only takes into account a large amount of actual production data, but also captures the nonlinear relationship between parameter changes and chromaticity influence through curve fitting, thereby greatly improving the accuracy and reliability of the determination of chromaticity influence values.

[0022] Optionally, these historical data are used to construct an influence curve between historical thermal transfer parameters and historical chromaticity differences. This step converts discrete historical data into a continuous functional relationship, so that the chromaticity influence of any thermal transfer parameter can be accurately estimated. Finally, by inputting the temperature comparison results, pressure comparison results, and duration comparison results into the corresponding influence curves, the first chromaticity influence value of the temperature comparison result on the color ribbon, the second chromaticity influence value of the pressure comparison result on the color ribbon, and the third chromaticity influence value of the duration comparison result on the color ribbon are obtained. This method based on historical data and influence curves not only takes into account a large amount of actual production data, but also captures the nonlinear relationship between parameter changes and chromaticity influence through curve fitting, thereby greatly improving the accuracy and reliability of determining the chromaticity influence value.

[0023] By adopting the above technical solution, a large amount of historical data is used to construct an influence curve, and discrete historical data points are converted into a continuous functional relationship. This step not only integrates a large amount of actual production experience, but also captures the possible nonlinear relationship between parameter changes and chromaticity influence through mathematical modeling. Secondly, by inputting the temperature comparison results, pressure comparison results, and time comparison results into the corresponding influence curves, the first chromaticity influence value of the temperature comparison result on the color ribbon, the second chromaticity influence value of the pressure comparison result on the color ribbon, and the third chromaticity influence value of the time comparison result on the color ribbon are obtained. This method allows the chromaticity influence of any thermal transfer parameter to be accurately estimated, and is no longer limited to discrete historical data points. In this way, the scheme effectively converts historical production experience into a quantifiable and predictable model, greatly improving the accuracy and reliability of the determination of chromaticity influence values.

[0024] Optionally, after obtaining the ribbon image of the safety belt to be printed after the thermal transfer operation, the method further includes:

[0025] The color band image is equalized using an inverse grayscale histogram.

[0026] By adopting the above technical solution and the image preprocessing method, the printed information in the ribbon image is better highlighted, which is beneficial to the subsequent image analysis and chromaticity difference calculation.

[0027] Optionally, the step of obtaining material property information of the safety belt to be printed and determining the first thermal transfer parameters required for the safety belt to be printed includes:

[0028] Acquire printing requirement information of the seat belt to be printed, and determine the thermal transfer index corresponding to the printing requirement information;

[0029] Acquire material property information of the safety belt to be printed, and select target material property information corresponding to the thermal transfer index from the material property information;

[0030] According to the target material characteristic information, first thermal transfer parameters required for the safety belt to be printed are determined.

[0031] By adopting the above technical solution, based on the target material characteristic information obtained by screening, the solution determines the first thermal transfer parameters required for the seat belt to be printed. This parameter determination method based on the target material characteristics enables the final thermal transfer parameters to fully adapt to the characteristics of the seat belt material and meet specific printing requirements. Overall, the solution achieves precise matching of thermal transfer parameters by organically combining printing requirements, material characteristics and thermal transfer parameters.

[0032] Optionally, when it is detected that the actual chromaticity difference is less than the expected chromaticity difference, after generating the warning information, the method includes:

[0033] According to the deviation value between the actual chromaticity difference and the expected chromaticity difference, the first thermal transfer parameter required for the safety belt to be printed is adjusted.

[0034] By adopting the above technical solution, the system can fine-tune the thermal transfer parameters, such as temperature, pressure or duration, in real time according to the feedback of the actual printing effect, so as to compensate for the deviation of printing quality caused by changes in material properties, environmental factors or equipment status. This closed-loop control mechanism significantly improves the adaptability and stability of the thermal transfer process, and can effectively deal with various variables and uncertainties in the production process.

[0035] In a second aspect, the present application provides a safety belt thermal transfer printing detection and warning system, the system comprising:

[0036] A first parameter determination module, used for obtaining material property information of the seat belt to be printed, and determining a first thermal transfer parameter required for the seat belt to be printed;

[0037] A second parameter determination module, used for obtaining a second thermal transfer parameter of the standard ribbon and a standard chromaticity difference value of the ribbon corresponding to the second thermal transfer parameter;

[0038] An expected chromaticity difference determination module is used to determine an expected chromaticity difference of the ribbon corresponding to the seat belt to be printed according to a comparison result of the first thermal transfer parameter and the second thermal transfer parameter of the standard ribbon and the standard chromaticity difference;

[0039] An actual chromaticity difference determination module is used to obtain a ribbon image of the safety belt to be printed after a thermal transfer operation is performed, and determine an actual chromaticity difference corresponding to the ribbon image;

[0040] The early warning module is used to generate early warning information when it is detected that the actual chromaticity difference value is smaller than the expected chromaticity difference value.

[0041] In a third aspect, the present application provides a computer storage medium, wherein the computer storage medium stores a plurality of instructions, wherein the instructions are suitable for being loaded by a processor and executing any one of the above methods.

[0042] In a fourth aspect, the present application provides an electronic device, comprising a processor, a memory and a transceiver, wherein the memory is used to store instructions, the transceiver is used to communicate with other devices, and the processor is used to execute the instructions stored in the memory so that the electronic device performs any one of the methods described above.

[0043] In summary, the beneficial effects brought about by the technical solution of this application include:

[0044] By adopting the above technical solution, the material property information of the seat belt to be printed is obtained and the first thermal transfer parameter is determined. Combined with the second thermal transfer parameter of the standard webbing and the corresponding standard chromaticity difference, the parameter adaptation of seat belts of different materials is achieved. Secondly, by comparing the first thermal transfer parameter with the second thermal transfer parameter and combining the standard chromaticity difference to determine the expected chromaticity difference, this step further improves the accuracy of the expected standard. Then, a method is adopted to obtain the ribbon image after the thermal transfer operation and determine the actual chromaticity difference, avoiding the problem that the direct detection of the printing effect may be affected by external factors such as ambient light. Finally, by comparing the actual chromaticity difference with the expected chromaticity difference, a warning message is generated when the actual value is less than the expected value, realizing an accurate warning based on the ribbon data. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 It is a flow chart of a safety belt thermal transfer printing detection and early warning method according to an embodiment of the present application;

[0046] Figure 2 It is a structural schematic diagram of a safety belt thermal transfer printing detection and warning system according to an embodiment of the present application;

[0047] Figure 3 It is a structural schematic diagram of an electronic device provided in an embodiment of the present application.

[0048] Description of reference numerals: 300, electronic device; 301, processor; 302, communication bus; 303, user interface; 304, network interface; 305, memory. DETAILED DESCRIPTION

[0049] In order to enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below in conjunction with the drawings in the embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this application, not all of the embodiments.

[0050] In the description of the embodiments of the present application, words such as "illustrative", "for example" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "illustrative", "for example" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "illustrative", "for example" or "for example" is intended to present related concepts in a specific way.

[0051] In the description of the embodiments of the present application, the meaning of the term "multiple" refers to two or more. For example, multiple systems refer to two or more systems, and multiple screen terminals refer to two or more screen terminals. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. The terms "include", "comprise", "have" and their variations all mean "including but not limited to", unless otherwise specifically emphasized.

[0052] See also Figure 1 , is a flow chart of a seat belt thermal transfer printing detection and early warning method provided in an embodiment of the present application. The method can be implemented by a computer program, can be implemented by a single-chip microcomputer, or can be run on a seat belt thermal transfer printing detection and early warning system based on the von Neumann system. The computer program can be integrated into an application or run as an independent tool application. The specific steps of the seat belt thermal transfer printing detection and early warning method are described in detail below.

[0053] S101: Acquire material property information of the seat belt to be printed, and determine the first thermal transfer parameters required for the seat belt to be printed.

[0054] Among them, material property information refers to various parameters and data that describe the physical, chemical and mechanical properties of the material. In the embodiment of the present application, material property information can be understood as specific properties related to the seat belt webbing, especially those that will affect the thermal transfer process and printing quality. This may include the fiber composition (such as polyester, nylon, etc.), density and thickness, surface roughness, thermal stability, ink absorption or pigment adsorption capacity, wear resistance and durability, elasticity and tensile properties of the webbing, etc. The material property information is mainly used in this application to determine the optimal thermal transfer parameters (such as temperature, pressure and time) suitable for the specific seat belt, predict problems or challenges that may arise in the thermal transfer process, evaluate the expected performance of printing quality, and provide a basis for parameter adjustment of the thermal transfer process.

[0055] Among them, the first thermal transfer parameters refer to the key process variables that affect the quality and effect of printing during the thermal transfer printing process. These parameters usually include factors such as temperature, pressure and time in the thermal transfer process, which directly determine the effect of thermal transfer and the quality of printing. In the embodiment of the present application, the first thermal transfer parameters can be understood as the optimal thermal transfer condition settings for the specific seat belt determined according to the material property information of the seat belt to be printed. These parameters may include the heating temperature of the thermal transfer equipment, the pressure applied by the stamping head to the webbing, and the duration of the thermal transfer process. The first thermal transfer parameters are used to guide the specific operation of the thermal transfer equipment to ensure the best printing effect on a given seat belt material. By accurately controlling these parameters, it can be ensured that the dye or pigment in the ribbon can be fully transferred to the surface of the seat belt during the thermal transfer process to form clear and durable printing, while avoiding problems such as blurred printing, uneven color, and insufficient adhesion caused by improper parameter settings.

[0056] In this embodiment, obtaining the material property information of the seat belt to be printed and determining the first thermal transfer parameters required for the seat belt to be printed are the starting steps of the entire thermal transfer printing detection and early warning method. Since seat belts are significantly different from ordinary webbings in terms of usage requirements and materials, and seat belts of different materials have significant differences in their responses to the thermal transfer process, accurately understanding the material properties and setting appropriate thermal transfer parameters accordingly can greatly improve the printing quality and efficiency. In specific implementation, first obtain the material property information of the seat belt to be printed through material testing equipment or by consulting the seat belt production specifications, including key parameters such as the fiber composition, density, thickness, surface roughness, and thermal stability of the webbing. Subsequently, based on these material property information, combined with historical data and production experience, the system will automatically analyze factors such as the thermal sensitivity, ink absorption, and surface characteristics of the material, thereby determining a set of the most suitable thermal transfer parameters. This set of parameters, namely the first thermal transfer parameters, usually includes key indicators such as thermal transfer temperature, pressure, and time. When determining these parameters, the system takes into account the impact of different material properties on the thermal transfer process. For example, higher density materials may require higher temperatures and pressures, while more heat-sensitive materials may require shorter thermal transfer times.

[0057] Based on the above embodiment, as an optional implementation, step S101 also includes S1011-S1013.

[0058] S1011: Acquire printing requirement information of the seat belt to be printed, and determine a thermal transfer index corresponding to the printing requirement information.

[0059] The printing requirement information refers to a detailed description of the specific requirements and specifications for a specific printing task. This information usually includes various parameters related to the appearance and quality of the printing, such as the printing content, font, size, color, and position. In the embodiment of the present application, the printing requirement information can be understood as the specific requirements for the thermal transfer printing process of the seat belt. The printing requirement information is used to guide the specific implementation of the thermal transfer printing process to ensure that the printing result meets the expected appearance and quality standards.

[0060] Thermal transfer index refers to a series of quantitative parameters for evaluating the quality and effect of thermal transfer printing. These indexes usually include various measurement values ​​that can objectively reflect the quality of printing, such as the clarity, color saturation, adhesion, and wear resistance of the printing. In the embodiment of the present application, the thermal transfer index can be understood as a set of evaluation criteria specially customized for the thermal transfer printing process of the seat belt, which may include but is not limited to the color value, edge clarity, printing uniformity, wear resistance, etc. of the printing.

[0061] In this embodiment, by accurately defining the printing requirements and the corresponding thermal transfer indicators, it can be ensured that the printing results not only meet the appearance requirements, but also meet the required functionality and durability standards. In the specific implementation, the printing requirement information of the seat belt to be printed is first obtained from the production order or product specification, which includes specific requirements such as printing content, font, size, color, and position. Subsequently, the system automatically determines a set of corresponding thermal transfer indicators based on these printing requirement information. For example, for printing that requires high contrast, the system will set a higher chromaticity difference standard; for printing that requires long-term durability, a higher wear resistance index will be set. These thermal transfer indicators usually include quantifiable parameters such as chromaticity value, edge clarity, printing uniformity, and wear resistance. When determining these indicators, the system will comprehensively consider factors such as the use environment of the seat belt, regulatory requirements, and customer expectations to ensure that the indicators can both meet actual needs and are feasible.

[0062] S1012: Obtain material property information of the seat belt to be printed, and filter out target material property information corresponding to the thermal transfer index from the material property information.

[0063] Among them, the target material characteristic information refers to the ideal or expected physical, chemical and mechanical property parameters that the material should have in a specific application scenario. This information is usually set based on product performance requirements, industry standards or best practices. In the embodiment of the present application, the target material characteristic information can be understood as a set of ideal characteristic parameters that the safety belt material should have to achieve the best thermal transfer effect. For example, it includes but is not limited to the ideal fiber composition ratio, the density range most suitable for thermal transfer, the best surface roughness, the ideal thermal stability, the best ink absorption or pigment adsorption capacity, etc.

[0064] In the specific implementation, first obtain the complete material property information of the seat belt to be printed through material testing equipment or by consulting the seat belt production specifications. This information includes comprehensive parameters such as the fiber composition, density, thickness, surface roughness, and thermal stability of the webbing. Subsequently, the system will screen out the key parameters directly related to the thermal transfer process from these comprehensive material property information based on the previously determined thermal transfer indicators. These screened parameters are the target material property information. For example, if the thermal transfer indicators include requirements for printing clarity, then material properties related to surface roughness and ink absorbency will be screened as target material property information; if the thermal transfer indicators emphasize durability, then the thermal stability and fiber strength of the material will be included in the target material property information.

[0065] S1013: Determine the first thermal transfer parameters required for the seat belt to be printed according to the target material characteristic information.

[0066] In specific implementation, the system will first analyze the previously screened target material characteristic information, which includes key parameters directly related to thermal transfer, such as the thermal sensitivity, surface roughness, and ink absorption of the material. Subsequently, the system will automatically calculate and generate a set of the most suitable thermal transfer parameters, namely the first thermal transfer parameters, based on these target material characteristic information, combined with historical data and production experience. This set of parameters usually includes key indicators such as thermal transfer temperature, pressure, and time. For example, for materials with high thermal sensitivity, the system may set a lower thermal transfer temperature and a shorter thermal transfer time; for materials with high surface roughness, the thermal transfer pressure may be increased to ensure sufficient transfer of the colorant. When determining these parameters, the system not only considers the characteristics of the material, but also takes into account the previously determined thermal transfer indicators to ensure that the generated parameters can meet the requirements of printing quality. The first thermal transfer parameters determined in this way provide precise operating guidance for the thermal transfer equipment, which can maximize the characteristics of the material and achieve the best printing effect.

[0067] S102: Acquire the second thermal transfer parameters of the standard ribbon and the standard chromaticity difference value of the ribbon corresponding to the second thermal transfer parameters.

[0068] Among them, standard webbing refers to a reference safety belt sample with predetermined specifications and performance indicators under a specific production environment. This kind of webbing is usually strictly screened and tested, and is considered to represent the safety belt product under ideal production conditions. In the embodiment of the present application, standard webbing can be understood as a safety belt sample with the best thermal transfer adaptability, and its material properties and structural characteristics are considered to be the best benchmark for thermal transfer printing. Standard webbing is used as a reference standard for thermal transfer parameter adjustment and quality control.

[0069] The second thermal transfer parameters refer to a set of optimal thermal transfer process parameters specifically determined for the standard webbing. This set of parameters is obtained by systematic thermal transfer testing and optimization of the standard webbing. In the embodiment of the present application, the second thermal transfer parameters can be understood as a set of parameters that can achieve the best printing effect on the standard webbing.

[0070] The ribbon refers to a special material ribbon used to transfer colorants during thermal transfer printing. It is usually composed of a polyester film substrate and a heat-sensitive colorant layer coated thereon. The heat-sensitive colorant layer melts when heated and transfers to the surface to be printed. In the embodiment of the present application, the ribbon can be understood as a consumable specially designed for thermal transfer printing of seat belts.

[0071] The standard chromaticity difference is the chromaticity difference between the printed area and the unprinted area of ​​the ribbon after the standard ribbon is consumed after thermal transfer under the standard second thermal transfer parameters. In the embodiment of the present application, the standard chromaticity difference can be understood as a benchmark indicator reflecting the actual thermal transfer effect. It represents the actual chromaticity change on the ribbon caused by the thermal transfer process after thermal transfer using the standard ribbon and the second thermal transfer parameters.

[0072] The second thermal transfer parameters of the standard ribbon and the standard chromaticity difference value of the ribbon corresponding to the second thermal transfer parameters are obtained.

[0073] In the specific implementation, a representative standard webbing is selected. The webbing should have stable physical and chemical properties and can represent the webbing used in daily production. Through systematic testing and optimization, the combination of thermal transfer parameters that best suits the standard webbing is determined. These parameters are called the second thermal transfer parameters and can also be directly obtained from historical data, which is not limited here. The second thermal transfer parameters usually include key factors such as temperature, pressure and printing time. Their determination needs to comprehensively consider multiple aspects such as printing clarity and wear resistance to achieve the best thermal transfer effect.

[0074] After determining the second thermal transfer parameters, use these parameters to perform thermal transfer operations on standard ribbons. After the thermal transfer is completed, use professional colorimetric measurement equipment (such as a spectrophotometer) to measure the color values ​​of the printed area and the unprinted area on the ribbon. By calculating the color difference between the two areas, the standard color difference is obtained. This difference reflects the degree of color transfer on the ribbon during the thermal transfer process under standard conditions and is an important indicator for evaluating the thermal transfer effect.

[0075] S103: Determine the expected chromaticity difference of the ribbon corresponding to the seat belt to be printed according to the comparison result of the first thermal transfer parameter and the second thermal transfer parameter of the standard ribbon and the standard chromaticity difference.

[0076] Among them, the expected chromaticity difference refers to the chromaticity difference between the printed area and the unprinted area of ​​the ribbon of the seat belt to be printed, which is expected to be achieved under the first thermal transfer parameters. In the embodiment of the present application, it can be understood as the ideal chromaticity difference that the seat belt to be printed should achieve by comparing the first thermal transfer parameters of the seat belt to be printed with the second thermal transfer parameters of the standard webbing, and combining the standard chromaticity difference of the standard webbing. This value reflects the chromaticity contrast effect that the seat belt to be printed should present under the optimal printing conditions after taking into account the differences in material properties. The expected chromaticity difference is used as a reference standard for the actual chromaticity difference to determine whether the thermal transfer process has achieved the expected effect. According to the comparison results of the first thermal transfer parameters and the second thermal transfer parameters of the standard webbing and the standard chromaticity difference, the expected chromaticity difference of the ribbon corresponding to the seat belt to be printed is determined.

[0077] During the specific implementation, it is first necessary to obtain the second thermal transfer parameters of the standard webbing and the corresponding standard chromaticity difference. These data usually come from production experience or pre-conducted standard tests. Then, the first thermal transfer parameters of the seat belt to be printed are compared with the second thermal transfer parameters of the standard webbing. The comparison content includes three key parameters: temperature, pressure and duration. The comparison results reflect the difference in thermal transfer conditions between the seat belt to be printed and the standard webbing. Next, based on the impact of these differences on chromaticity and combined with the standard chromaticity difference, the expected chromaticity difference of the color ribbon corresponding to the seat belt to be printed is calculated. The expected chromaticity difference determined by this method takes into account the material properties of the seat belt to be printed and the actual thermal transfer conditions, so it can more accurately reflect the ideal printing effect.

[0078] Based on the above embodiment, as an optional implementation, step S103 also includes S201-S203.

[0079] S201: Compare the first thermal transfer parameters with the second thermal transfer parameters of the standard ribbon to obtain a temperature comparison result, a pressure comparison result, and a time comparison result.

[0080] During the thermal transfer process, the three parameters of temperature, pressure and duration affect the quality and color difference of the final printing.

[0081] The effect of temperature on thermal transfer is mainly reflected in the melting and transfer process of the ribbon. The appropriate temperature ensures that the dye or pigment in the ribbon is fully melted and can be smoothly transferred to the surface of the seat belt to be printed. If the temperature is too low, the ribbon may not melt completely, resulting in insufficient transfer, weak or uneven printing. Conversely, if the temperature is too high, it may cause the ribbon to melt excessively, resulting in blurred edges of printing, excessive color diffusion, and even damage to the surface of the seat belt to be printed. Therefore, precise temperature control is essential to obtain clear and saturated printing effects.

[0082] Pressure mainly affects the contact between the ribbon and the seat belt to be printed during the thermal transfer process. Appropriate pressure ensures that the ribbon is in full contact with the seat belt surface, promoting uniform transfer of molten dye or pigment. Insufficient pressure may result in incomplete transfer, intermittent or uneven printing. Excessive pressure may cause excessive deformation of the ribbon, resulting in deformation of the printing or damage to the seat belt surface. In addition, seat belts of different materials may require different pressure settings to adapt to their surface characteristics and absorption capacity.

[0083] Duration refers to the duration of heat and pressure during the thermal transfer process. It directly affects the degree of dye or pigment transfer from the ribbon to the seat belt surface. Sufficient duration ensures that the dye in the ribbon is fully melted and transferred to form a stable printing effect. Too short a time may result in incomplete transfer, weak or uneven printing. Too long a time may cause excessive diffusion, resulting in blurred edges or over-saturated colors. At the same time, too long a heating time may also cause damage to certain temperature-sensitive seat belt materials.

[0084] In the specific implementation, first obtain the first thermal transfer parameters of the seat belt to be printed, including the first temperature parameter, the first pressure parameter and the first duration parameter; at the same time, obtain the second thermal transfer parameters of the standard webbing, including the second temperature parameter, the second pressure parameter and the second duration parameter. Then, compare these three sets of parameters respectively. The temperature comparison result can be obtained by calculating the difference or ratio between the first temperature parameter and the second temperature parameter; the pressure comparison result can be obtained by calculating the difference or ratio between the first pressure parameter and the second pressure parameter; the duration comparison result can be obtained by calculating the difference or ratio between the first duration parameter and the second duration parameter. This comparison method can intuitively reflect the difference between the specific conditions required by the seat belt to be printed in the thermal transfer process and the standard webbing. The comparison result can be a specific numerical value or a normalized ratio value, which is convenient for subsequent calculation and analysis. Through this comparison, the special requirements of the seat belt to be printed for temperature, pressure and duration in the thermal transfer process can be clearly understood, thereby providing a basis for adjusting the parameters of the thermal transfer equipment.

[0085] S202: respectively determining a first chromaticity influence value of the temperature comparison result on the color ribbon, a second chromaticity influence value of the pressure comparison result on the color ribbon, and a third chromaticity influence value of the duration comparison result on the color ribbon;

[0086] The first chromaticity influence value refers to the degree of influence of the temperature difference on the chromaticity difference between the printed area and the unprinted area of ​​the ribbon. In the embodiment of the present application, it can be understood as the chromaticity influence value obtained by querying the influence curve between the pre-established temperature and chromaticity difference according to the temperature comparison result. Specifically, the first chromaticity influence value reflects how the difference between the first temperature parameter of the seat belt to be printed and the second temperature parameter of the standard ribbon affects the chromaticity difference.

[0087] The second chromaticity influence value refers to the influence of the pressure difference on the chromaticity difference between the printed area and the unprinted area of ​​the ribbon. In the embodiment of the present application, it can be understood as the chromaticity influence value obtained by querying the influence curve between the pressure and the chromaticity difference value established in advance according to the pressure comparison result. Specifically, the second chromaticity influence value reflects how the difference between the first pressure parameter of the seat belt to be printed and the second pressure parameter of the standard webbing affects the chromaticity difference value.

[0088] The third chromaticity impact value refers to the degree of influence of the time difference on the chromaticity difference between the printed area and the unprinted area of ​​the ribbon. In the embodiment of the present application, it can be understood as the chromaticity impact value obtained by querying the influence curve between the pre-established time and chromaticity difference value according to the time comparison result. Specifically, the third chromaticity impact value reflects how the difference between the first time parameter of the seat belt to be printed and the second time parameter of the standard webbing affects the chromaticity difference value.

[0089] Respectively determining the first chromaticity influence value of the temperature comparison result on the color ribbon, the second chromaticity influence value of the pressure comparison result on the color ribbon, and the third chromaticity influence value of the time comparison result on the color ribbon are key steps in the method of the present invention, which aims to quantify the influence of different thermal transfer parameters on the printing effect.

[0090] In the specific implementation, it is first necessary to obtain the pre-established temperature-chromaticity influence curve, pressure-chromaticity influence curve and duration-chromaticity influence curve. These curves are obtained based on the historical data analysis of the thermal transfer equipment, and respectively describe the relationship between the temperature, pressure and duration changes and the chromaticity difference changes. Then, the previously obtained temperature comparison results, pressure comparison results and duration comparison results are respectively substituted into the corresponding influence curves. Through the endpoint values ​​in the temperature comparison results, pressure comparison results and duration comparison results, the corresponding influence curves can be queried respectively, and the influence values ​​of the temperature difference, pressure difference and duration difference on the chromaticity, that is, the first chromaticity influence value, the second chromaticity influence value and the third chromaticity influence value can be obtained. For example, the temperature comparison result can be shown as [standard webbing: 70°C, safety belt to be transferred: 77°C, difference: +7°C] according to the difference, or as [standard webbing: 70°C, safety belt to be transferred: 77°C, ratio: 1.1] according to the ratio. The endpoint values ​​can be substituted into the influence curves respectively, so as to obtain the corresponding chromaticity influence values.

[0091] Based on the above embodiment, as an optional implementation, step S202 also includes S2021-S2022.

[0092] S2021: Obtain historical thermal transfer parameters of the thermal transfer equipment and the corresponding historical chromaticity difference values, and construct an influence curve between the historical thermal transfer parameters and the historical chromaticity difference values. The historical thermal transfer parameters include historical temperature thermal transfer parameters, historical pressure thermal transfer parameters, and historical duration thermal transfer parameters.

[0093] Among them, historical thermal transfer parameters refer to parameter data such as temperature, pressure and duration used by the thermal transfer equipment in the past production process. In the embodiment of the present application, it can be understood as a collection of a series of temperature parameters, pressure parameters and duration parameters recorded by the thermal transfer equipment when processing different types of seat belts. Specifically, the historical thermal transfer parameters include a large amount of historical temperature data, historical pressure data and historical duration data. These data reflect the specific parameter settings used by the thermal transfer equipment when processing seat belts of various materials and specifications.

[0094] Among them, the historical chromaticity difference refers to the chromaticity difference data between the printed area and the unprinted area measured by the thermal transfer equipment after thermal transfer of different safety belts in the past production process. In the embodiment of the present application, it can be understood as a set of chromaticity difference values ​​between the printed area and the unprinted area of ​​the ribbon that have been recorded corresponding to the historical thermal transfer parameters. Specifically, the historical chromaticity difference is the chromaticity difference data obtained by the measuring equipment after thermal transfer using specific historical thermal transfer parameters (temperature, pressure, duration). Each set of historical chromaticity difference values ​​is associated with the corresponding historical thermal transfer parameters, forming a complete historical data pair.

[0095] In this embodiment, in order to establish a quantitative relationship between thermal transfer parameters and printing effects, the historical thermal transfer parameters of the thermal transfer device and the corresponding historical chromaticity difference are obtained, and the influence curve between the historical thermal transfer parameters and the historical chromaticity difference is constructed. In specific implementation, it is first necessary to extract the historical thermal transfer parameters from the database of the thermal transfer device, including the historical temperature thermal transfer parameters, the historical pressure thermal transfer parameters, and the historical duration thermal transfer parameters. At the same time, the historical chromaticity difference data corresponding to these parameters are obtained. These data reflect the actual printing effects under different parameter settings. Then, using data analysis technology, the temperature-chromaticity influence curve, the pressure-chromaticity influence curve, and the duration-chromaticity influence curve are constructed respectively. In the construction process, interpolation or fitting methods, such as polynomial fitting or spline interpolation, can be used to capture the relationship between parameter changes and chromaticity differences. For example, for the temperature-chromaticity influence curve, the historical temperature thermal transfer parameters can be used as the horizontal coordinate, and the corresponding historical chromaticity difference can be used as the vertical coordinate, and a smooth curve can be obtained by fitting. Similarly, pressure-chromaticity impact curve and duration-chromaticity impact curve can be constructed.

[0096] S2022: Input the temperature comparison result, pressure comparison result and duration comparison result into the influence curve respectively to obtain the first chromaticity influence value of the temperature comparison result on the color band, the second chromaticity influence value of the pressure comparison result on the color band, and the third chromaticity influence value of the duration comparison result on the color band.

[0097] In the specific implementation, it is first necessary to use the previously constructed temperature-chromaticity influence curve, pressure-chromaticity influence curve and duration-chromaticity influence curve. Then, substitute the previously obtained temperature comparison result into the temperature-chromaticity influence curve to obtain the first chromaticity influence value; substitute the pressure comparison result into the pressure-chromaticity influence curve to obtain the second chromaticity influence value; substitute the duration comparison result into the duration-chromaticity influence curve to obtain the third chromaticity influence value. This process can be achieved by table lookup or interpolation method. For example, for the temperature comparison result, the corresponding horizontal coordinate point can be found on the temperature-chromaticity influence curve, and then its vertical coordinate value can be read as the first chromaticity influence value. If the comparison result is not an exact point on the curve, the corresponding chromaticity influence value can be calculated using methods such as linear interpolation. Similarly, the second chromaticity influence value and the third chromaticity influence value can be obtained. The advantage of this method is that it takes into account the nonlinear influence of different thermal transfer parameters on chromaticity, and can more accurately reflect the actual influence of parameter changes on the printing effect.

[0098] S203: Integrate the first chromaticity influence value, the second chromaticity influence value, the third chromaticity influence value and the standard chromaticity difference value to determine the expected chromaticity difference value of the color ribbon corresponding to the seat belt to be printed.

[0099] During specific implementation, considering that there may be interactions between the effects of thermal transfer parameters on chromaticity, the present invention uses a weighted summation method for integration. The standard chromaticity difference value is used as a reference value, representing the ideal printing effect under standard conditions. The first chromaticity influence value, the second chromaticity influence value, and the third chromaticity influence value respectively reflect the effects of the deviations of temperature, pressure, and duration parameters from standard conditions on chromaticity. During integration, appropriate weights need to be assigned to these three chromaticity influence values ​​to reflect the extent of their influence on the final chromaticity difference value. These weights can be determined based on actual production experience or by statistical analysis methods. For example, if it is found in practice that temperature has the greatest influence on the printing effect, the weight of the first chromaticity influence value can be set relatively large.

[0100] Through this weighted integration method, an expected color difference value that takes all factors into consideration can be obtained. This value reflects the ideal printing effect that the seat belt to be printed should achieve under actual thermal transfer conditions. The advantage of this integration method is that it considers the comprehensive influence of multiple parameters, rather than simply superimposing the influence of each parameter.

[0101] S104: Obtaining a ribbon image after the seat belt to be printed is subjected to a thermal transfer operation, and determining an actual chromaticity difference value corresponding to the ribbon image.

[0102] The ribbon image is defined as the image of the ribbon after the thermal transfer operation of the safety belt to be printed. In the embodiment of the present application, it can be understood as the image trace left on the ribbon originally used for transfer after the thermal transfer process is completed. This image is actually the reverse image formed on the ribbon by the color material that was not transferred to the safety belt during the thermal transfer process.

[0103] Among them, the actual chromaticity difference refers to the actual chromaticity difference obtained by identifying the printed area and the unprinted area in the ribbon image after the thermal transfer operation is performed according to the first thermal transfer parameter. In the embodiment of the present application, it can be understood that after the thermal transfer operation is completed, the residual image on the ribbon is analyzed, and the value obtained by comparing the chromaticity difference between the transferred area (printed area) and the untransferred area (unprinted area). In the embodiment of the present application, the actual chromaticity difference is used to evaluate the effect and quality of the thermal transfer process. By analyzing the residual image on the ribbon, the quality of the printing on the safety belt by thermal transfer can be indirectly understood.

[0104] In practice, the image of the ribbon must first be captured by an image acquisition device (such as a high-resolution camera or scanner) after the thermal transfer operation is completed. This process should be performed immediately after the ribbon is removed from the thermal transfer device to ensure that the captured image accurately reflects the results of the thermal transfer process. Next, the acquired ribbon image is analyzed using image processing software or algorithms. The key to this step is to accurately identify and distinguish between the printed area and the unprinted area. This can be achieved by setting appropriate thresholds and using image segmentation techniques. After the two areas are identified, their average chromaticity values ​​are calculated separately. The actual chromaticity difference is obtained by calculating the difference between the average chromaticity values ​​of the printed area and the unprinted area.

[0105] Based on the above embodiment, as an optional implementation, step S104 also includes S1041-S1043.

[0106] S1041: Acquire the ribbon image after the thermal transfer operation of the safety belt to be printed.

[0107] In practice, it is necessary to install a high-resolution image acquisition device, such as an industrial-grade camera or a line scan camera, on the thermal transfer equipment. These devices should be precisely fixed in place near the thermal transfer head so that they can clearly capture the image of the ribbon that has just completed the thermal transfer operation. During the thermal transfer process, the image acquisition device should work synchronously with the control system of the thermal transfer equipment. When the thermal transfer operation is completed, the control system will immediately trigger the image acquisition device to capture the image of the ribbon area that has just undergone thermal transfer.

[0108] S1042: Identify the printed area and the unprinted area in the ribbon image, and calculate the first chromaticity value corresponding to the printed area and the second chromaticity value corresponding to the unprinted area respectively.

[0109] Among them, the first chromaticity value corresponding to the printing area refers to the average chromaticity value of the transferred area on the ribbon after the thermal transfer operation is completed. In the embodiment of the present application, it can be understood as the chromaticity measurement result of the ribbon area corresponding to the actual printing position on the seat belt by analyzing the ribbon image obtained. In the embodiment of the present application, the first chromaticity value corresponding to the printing area is used to evaluate the effect of colorant transfer during the thermal transfer process. This value reflects the color depth of the traces left after the colorant on the ribbon is transferred to the seat belt. By measuring and analyzing this chromaticity value, the clarity and saturation of the printing can be indirectly judged. A lower first chromaticity value usually means that more colorant is successfully transferred to the seat belt, which may lead to clearer and darker printing effects.

[0110] The second chromaticity value corresponding to the unprinted area refers to the average chromaticity value of the area on the ribbon that has not been thermally transferred after the thermal transfer operation is completed. In the embodiment of the present application, it can be understood as the color measurement result of the ribbon area corresponding to the position on the safety belt where no printing is performed by analyzing the ribbon image obtained. In the embodiment of the present application, the second chromaticity value corresponding to the unprinted area is used to provide a reference value for comparison with the printed area. This value reflects the original chromaticity state of the area on the ribbon that has not been thermally transferred. By measuring and analyzing this chromaticity value, the initial state of the ribbon and the characteristics of the unaffected area during the thermal transfer process can be understood.

[0111] In specific implementation, an image segmentation algorithm is used to identify and distinguish between printed areas and unprinted areas. This can be achieved by setting an appropriate grayscale threshold, because the printed area usually appears darker than the unprinted area. In order to improve the accuracy of recognition, an adaptive threshold method can be used to dynamically adjust the threshold by considering local image features. In addition, morphological operations such as expansion and corrosion operations can be combined to optimize the definition of region boundaries. After completing region recognition, the chromaticity values ​​of the printed area and the unprinted area are calculated respectively. For the printed area, its average chromaticity value is calculated as the first chromaticity value; for the unprinted area, its average chromaticity value is calculated as the second chromaticity value. The calculation of the chromaticity value can be based on a variety of color spaces, and the color component that best reflects the thermal transfer effect is selected for analysis.

[0112] Based on the above embodiment, as an optional implementation, an inverse grayscale histogram is used to perform equalization processing on the color band image.

[0113] In this embodiment, in order to effectively enhance the difference between the printed area and the unprinted area in the ribbon image, the thermal transfer effect is more obvious, thereby improving the accuracy and reliability of subsequent analysis. In specific implementation, it is first necessary to calculate the grayscale histogram of the ribbon image, which reflects the distribution of pixels of different grayscale levels in the image. Then, the grayscale histogram is reversely processed, that is, the originally darker area is brighter and the brighter area is darker. The principle of this reverse processing is based on the characteristic that in the ribbon image after thermal transfer, the printed area is usually lighter in color than the unprinted area. Through reverse processing, the printed area can present a darker color in the processed image, thereby forming a stronger contrast with the background. Next, the grayscale histogram after reverse processing is equalized. The purpose of equalization is to redistribute the grayscale level of the image so that the entire grayscale range is fully utilized. This process involves calculating the cumulative distribution function (CDF) and performing grayscale mapping. Specifically, the CDF of the reverse grayscale histogram is first calculated, and then the original grayscale level is mapped to the new grayscale level according to the CDF value. This mapping makes the grayscale distribution of the image more uniform, thereby enhancing the overall contrast of the image.

[0114] S1043: Calculate the difference between the first chromaticity value and the second chromaticity value to obtain an actual chromaticity difference corresponding to the color band image.

[0115] When implementing it, you first need to ensure that you have accurately obtained the first chromaticity value of the printed area and the second chromaticity value of the unprinted area. These two values ​​represent the color depth of the transferred area and the unprinted area on the ribbon after thermal transfer. Then, through a simple subtraction operation, that is, subtracting the first chromaticity value from the second chromaticity value, you can get the actual chromaticity difference. It should be noted here that since the thermal transfer process usually causes the color material on the ribbon to be transferred to the safety belt, the printed area (first chromaticity value) is usually lighter than the unprinted area (second chromaticity value).

[0116] S105: When it is detected that the actual chromaticity difference is smaller than the expected chromaticity difference, a warning message is generated.

[0117] In specific implementation, the system first compares the actual color difference obtained with the expected color difference previously determined. If the actual color difference is less than the expected color difference, the system will immediately trigger the early warning mechanism. The early warning information can be presented in a variety of ways, such as displaying a striking warning sign on the production line control panel, sending an audible alarm, or pushing a notification to the mobile device of the relevant operator.

[0118] Based on the above embodiment, as an optional implementation manner, the first thermal transfer parameters required for the safety belt to be printed are adjusted according to the deviation value between the actual chromaticity difference and the expected chromaticity difference.

[0119] In specific implementation, the system first calculates the deviation between the actual color difference and the expected color difference. Then, according to the size and direction of the deviation, the system modifies the first thermal transfer parameter according to the preset adjustment algorithm. For example, if the actual color difference is significantly smaller than the expected color difference, it means that the printing effect is insufficient, and the system may appropriately increase the thermal transfer temperature or increase the pressure. On the contrary, if the actual color difference is close to or exceeds the expected color difference, the system may slightly reduce the temperature or reduce the pressure.

[0120] The following is an embodiment of the system of the present application, which can be used to execute the embodiment of the method of the present application. For details not disclosed in the embodiment of the system of the present application, please refer to the embodiment of the method of the application.

[0121] See also Figure 2 , which shows a schematic diagram of the structure of a safety belt thermal transfer printing detection and warning system provided by an exemplary embodiment of the present application. The system can be implemented as all or part of the system through software, hardware or a combination of both. The safety belt thermal transfer printing detection and warning system includes:

[0122] A first parameter determination module, used for obtaining material property information of the seat belt to be printed, and determining a first thermal transfer parameter required for the seat belt to be printed;

[0123] A second parameter determination module, used to obtain a second thermal transfer parameter of the standard ribbon and a standard chromaticity difference value of the ribbon corresponding to the second thermal transfer parameter;

[0124] An expected chromaticity difference determination module is used to determine an expected chromaticity difference of the ribbon corresponding to the seat belt to be printed according to a comparison result of the first thermal transfer parameter and the second thermal transfer parameter of the standard ribbon and the standard chromaticity difference;

[0125] An actual chromaticity difference determination module is used to obtain a ribbon image after the seat belt to be printed undergoes a thermal transfer operation, and determine an actual chromaticity difference corresponding to the ribbon image;

[0126] The early warning module is used to generate early warning information when it is detected that the actual chromaticity difference is less than the expected chromaticity difference.

[0127] Based on the above embodiments, as an optional embodiment, the first parameter determination module is also used to obtain printing requirement information of the seat belt to be printed, and determine the thermal transfer index corresponding to the printing requirement information; obtain material property information of the seat belt to be printed, and filter out target material property information corresponding to the thermal transfer index from the material property information; determine the first thermal transfer parameter required for the seat belt to be printed based on the target material property information.

[0128] On the basis of the above embodiments, as an optional embodiment, the expected chromaticity difference determination module is also used to compare the first thermal transfer parameters with the second thermal transfer parameters of the standard webbing to obtain temperature comparison results, pressure comparison results and time comparison results; respectively determine the first chromaticity influence value of the temperature comparison result on the color ribbon, the second chromaticity influence value of the pressure comparison result on the color ribbon, and the third chromaticity influence value of the time comparison result on the color ribbon; integrate the first chromaticity influence value, the second chromaticity influence value, the third chromaticity influence value and the standard chromaticity difference to determine the expected chromaticity difference of the color ribbon corresponding to the seat belt to be printed.

[0129] On the basis of the above embodiments, as an optional embodiment, the expected chromaticity difference determination module is also used to obtain the historical thermal transfer parameters of the thermal transfer equipment and the corresponding historical chromaticity difference values, and construct an influence curve between the historical thermal transfer parameters and the historical chromaticity difference values, wherein the historical thermal transfer parameters include historical temperature thermal transfer parameters, historical pressure thermal transfer parameters and historical duration thermal transfer parameters; the temperature comparison result, the pressure comparison result and the duration comparison result are respectively input into the influence curve to obtain the first chromaticity influence value of the temperature comparison result on the color ribbon, the second chromaticity influence value of the pressure comparison result on the color ribbon, and the third chromaticity influence value of the duration comparison result on the color ribbon.

[0130] On the basis of the above embodiment, as an optional embodiment, the actual chromaticity difference determination module is also used to obtain the ribbon image after the seat belt to be printed undergoes a thermal transfer operation; identify the printed area and the unprinted area in the ribbon image, and respectively calculate the first chromaticity value corresponding to the printed area and the second chromaticity value corresponding to the unprinted area; calculate the difference between the first chromaticity value and the second chromaticity value to obtain the actual chromaticity difference corresponding to the ribbon image.

[0131] Based on the above embodiment, as an optional embodiment, the actual chromaticity difference value determination module is further configured to perform equalization processing on the color band image using an inverse grayscale histogram.

[0132] Based on the above embodiment, as an optional embodiment, the early warning module is further used to adjust the first thermal transfer parameters required for the seat belt to be printed according to the deviation value between the actual chromaticity difference and the expected chromaticity difference.

[0133] The embodiment of the present application also provides a computer storage medium, which can store multiple instructions. The instructions are suitable for being loaded by a processor and executed by the seat belt thermal transfer printing detection and warning method such as the above embodiment. The specific execution process can be found in the specific description of the above embodiment, which will not be repeated here.

[0134] See also Figure 3 , is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application. Figure 3As shown, the electronic device 300 may include: at least one processor 301 , at least one network interface 304 , a user interface 303 , a memory 305 , and at least one communication bus 302 .

[0135] The communication bus 302 is used to realize the connection and communication between these components.

[0136] The user interface 303 may include a standard wired interface or a wireless interface.

[0137] The network interface 304 may optionally include a standard wired interface or a wireless interface (such as a WI-FI interface).

[0138] Among them, the processor 301 may include one or more processing cores. The processor 301 uses various interfaces and lines to connect various parts in the entire server, and executes various functions of the server and processes data by running or executing instructions, programs, code sets or instruction sets stored in the memory 305, and calling data stored in the memory 305. Optionally, the processor 301 can be implemented in at least one hardware form of digital signal processing (Digital Signal Processing, DSP), field programmable gate array (Field-Programmable Gate Array, FPGA), and programmable logic array (Programmable Logic Array, PLA). The processor 301 can integrate one or a combination of a central processing unit (Central Processing Unit, CPU), a graphics processing unit (Graphics Processing Unit, GPU) and a modem. Among them, the CPU mainly processes the operating system, user interface and application programs; the GPU is responsible for rendering and drawing the content to be displayed on the display screen; the modem is used to process wireless communications. It can be understood that the above-mentioned modem may not be integrated into the processor 301, and it can be implemented separately through a chip.

[0139] Among them, the memory 305 may include a random access memory (Random Access Memory, RAM) and may also include a read-only memory (Read-Only Memory). Optionally, the memory 305 includes a non-transitory computer-readable storage medium. The memory 305 can be used to store instructions, programs, codes, code sets or instruction sets. The memory 305 may include a program storage area and a data storage area, wherein the program storage area may store instructions for implementing an operating system, instructions for at least one function (such as a touch function, a sound playback function, an image playback function, etc.), instructions for implementing the above-mentioned various method embodiments, etc.; the data storage area may store data involved in the above-mentioned various method embodiments, etc. The memory 305 may also be optionally at least one storage device located away from the aforementioned processor 301. As Figure 3 As shown, the memory 305 as a computer storage medium may include an operating system, a network communication module, a user interface module, and an application program of a safety belt thermal transfer printing detection and early warning method.

[0140] exist Figure 3 In the electronic device 300 shown, the user interface 303 is mainly used to provide an input interface for the user and obtain data input by the user; and the processor 301 can be used to call an application program for a seat belt thermal transfer printing detection and warning method stored in the memory 305. When executed by one or more processors, the electronic device executes one or more methods in the above-mentioned embodiments.

[0141] An electronic device readable storage medium stores instructions, which, when executed by one or more processors, enable the electronic device to execute one or more methods in the above embodiments.

[0142] It should be noted that, for the aforementioned method embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should be aware that the present application is not limited by the order of the actions described, because according to the present application, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required for the present application.

[0143] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0144] In the several embodiments provided in this application, it should be understood that the disclosed devices can be implemented in other ways. For example, the device embodiments described above are only schematic, such as the division of units, which is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some service interfaces, and the indirect coupling or communication connection of devices or units can be electrical or other forms.

[0145] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0146] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0147] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable memory. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, which is stored in a memory and includes several instructions for a computer device (which can be a personal computer, server or network device, etc.) to execute all or part of the steps of the various embodiments of the present application. The aforementioned memory includes: various media that can store program codes, such as USB flash drives, mobile hard drives, magnetic disks or optical disks.

[0148] The above are only exemplary embodiments of the present disclosure and cannot be used to limit the scope of the present disclosure. That is, any equivalent changes and modifications made according to the teachings of the present disclosure are still within the scope of the present disclosure. After considering the disclosure of the specification and the truth of practice, it will be easy for those skilled in the art to think of other embodiments of the present disclosure. This application is intended to cover any variation, use or adaptive change of the present disclosure, which follows the general principles of the present disclosure and includes common knowledge or customary technical means in the technical field that are not recorded in the present disclosure.

Claims

1. A safety belt thermal transfer printing detection and early warning method, characterized in that: The method comprises: Acquire material property information of the seat belt to be printed, and determine the first thermal transfer parameters required for the seat belt to be printed; Acquire a second thermal transfer parameter of the standard ribbon and a standard chromaticity difference value of the ribbon corresponding to the second thermal transfer parameter; Determining an expected chromaticity difference value of the ribbon corresponding to the seat belt to be printed according to a comparison result of the first thermal transfer parameter and the second thermal transfer parameter of the standard ribbon and the standard chromaticity difference value; Obtaining a ribbon image after the safety belt to be printed is subjected to a thermal transfer operation, and determining an actual chromaticity difference value corresponding to the ribbon image; When it is detected that the actual chromaticity difference value is less than the expected chromaticity difference value, generating warning information; The step of obtaining the material property information of the seat belt to be printed and determining the first thermal transfer parameters required for the seat belt to be printed includes: Acquire printing requirement information of the seat belt to be printed, and determine the thermal transfer index corresponding to the printing requirement information; Acquire material property information of the seat belt to be printed, and filter out target material property information corresponding to the thermal transfer index from the material property information; According to the target material characteristic information, first thermal transfer parameters required for the safety belt to be printed are determined.

2. The method according to claim 1, characterized in that The step of determining the expected chromaticity difference of the ribbon corresponding to the seat belt to be printed according to the comparison result of the first thermal transfer parameter and the second thermal transfer parameter of the standard ribbon and the standard chromaticity difference comprises: Comparing the first thermal transfer parameter with the second thermal transfer parameter of the standard ribbon to obtain a temperature comparison result, a pressure comparison result, and a time comparison result; Respectively determine a first chromaticity influence value of the temperature comparison result on the color ribbon, a second chromaticity influence value of the pressure comparison result on the color ribbon, and a third chromaticity influence value of the duration comparison result on the color ribbon; The first chromaticity influence value, the second chromaticity influence value, the third chromaticity influence value and the standard chromaticity difference value are integrated to determine an expected chromaticity difference value of the color ribbon corresponding to the safety belt to be printed.

3. The method according to claim 2, characterized in that The separately determining a first chromaticity influence value of the temperature comparison result on the color ribbon, a second chromaticity influence value of the pressure comparison result on the color ribbon, and a third chromaticity influence value of the duration comparison result on the color ribbon comprises: Acquire historical thermal transfer parameters of a thermal transfer device and corresponding historical chromaticity differences, and construct an influence curve between the historical thermal transfer parameters and the historical chromaticity differences, wherein the historical thermal transfer parameters include historical temperature thermal transfer parameters, historical pressure thermal transfer parameters, and historical duration thermal transfer parameters; The temperature comparison result, the pressure comparison result and the duration comparison result are respectively input into the influence curve to obtain a first chromaticity influence value of the temperature comparison result on the color band, a second chromaticity influence value of the pressure comparison result on the color band, and a third chromaticity influence value of the duration comparison result on the color band.

4. The method according to claim 1, characterized in that: The step of obtaining the ribbon image after the thermal transfer operation of the safety belt to be printed and determining the actual chromaticity difference value corresponding to the ribbon image includes: Acquire a ribbon image of the safety belt to be printed after a thermal transfer operation; Identifying a printed area and an unprinted area in the ribbon image, and respectively calculating a first chromaticity value corresponding to the printed area and a second chromaticity value corresponding to the unprinted area; A difference between the first chromaticity value and the second chromaticity value is calculated to obtain an actual chromaticity difference corresponding to the color band image.

5. The method according to claim 4, characterized in that After obtaining the ribbon image of the safety belt to be printed after the thermal transfer operation, the method further includes: The color band image is equalized using an inverse grayscale histogram.

6. The method according to claim 1, characterized in that When it is detected that the actual chromaticity difference is less than the expected chromaticity difference, after generating the warning information, the method includes: According to the deviation value between the actual chromaticity difference and the expected chromaticity difference, the first thermal transfer parameter required for the safety belt to be printed is adjusted.

7. A safety belt thermal transfer printing detection and warning system, characterized in that: The system comprises: A first parameter determination module, used for obtaining material property information of the seat belt to be printed, and determining a first thermal transfer parameter required for the seat belt to be printed; A second parameter determination module, used to obtain a second thermal transfer parameter of the standard ribbon and a standard chromaticity difference value of the ribbon corresponding to the second thermal transfer parameter; An expected chromaticity difference determination module is used to determine an expected chromaticity difference of the ribbon corresponding to the seat belt to be printed according to a comparison result of the first thermal transfer parameter and the second thermal transfer parameter of the standard ribbon and the standard chromaticity difference; An actual chromaticity difference determination module is used to obtain a ribbon image of the safety belt to be printed after a thermal transfer operation is performed, and determine an actual chromaticity difference corresponding to the ribbon image; An early warning module, configured to generate early warning information when detecting that the actual chromaticity difference value is less than the expected chromaticity difference value; Among them, the first parameter determination module is specifically used to obtain the printing requirement information of the seat belt to be printed, and determine the thermal transfer index corresponding to the printing requirement information; obtain the material property information of the seat belt to be printed, and filter out the target material property information corresponding to the thermal transfer index from the material property information; determine the first thermal transfer parameter required for the seat belt to be printed based on the target material property information.

8. A computer storage medium, characterized in that: The computer storage medium stores a plurality of instructions, and the instructions are suitable for being loaded by a processor and executing the method according to any one of claims 1 to 6.

9. An electronic device, characterized in that: It includes a processor, a memory and a transceiver, the memory is used to store instructions, the transceiver is used to communicate with other devices, and the processor is used to execute the instructions stored in the memory so that the electronic device executes the method according to any one of claims 1 to 6.

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