Cover glass tunnel heating control method, apparatus, and related products

Abstract

The application discloses a cover plate glass channel heating control method and device and related products, and belongs to the technical field of cover plate glass manufacturing. The cover plate glass channel heating control method provided by the application comprises the following steps: 1. obtaining a current signal to be transmitted to a cover plate glass channel, calculating the input current of the cover plate glass channel based on the current signal to be transmitted, and iteratively adjusting the input current to be below a preset value, so that the heating efficiency is maintained through real-time calculation and iterative adjustment; 2. actively preventing the overheat of a current transformer, effectively inhibiting signal distortion caused by the overheat of the current transformer, ensuring the authenticity of the detection signal, and further improving the yield and quality stability of the cover plate glass.

Description

Technical Field

[0001] This invention relates to the field of cover glass manufacturing technology, specifically to a method, apparatus, and related products for controlling the heating of cover glass channels. Background Technology

[0002] As a key protective component for terminal products such as display panels and touch devices, cover glass requires extremely high precision in controlling process parameters such as temperature and pressure during its production process. Among them, the channel heating process directly determines the glass melting quality, forming stability, and core performance indicators such as light transmittance and flatness of the final product.

[0003] Currently, the industry commonly uses DCS controllers to construct the control system for cover glass production in order to maintain the heating temperature of the cover glass channel. However, in practical applications, the current transformers used to collect current signals are exposed to high-temperature and high-electromagnetic-interference industrial environments for extended periods, making them prone to overheating due to issues such as aging of their winding insulation and poor heat dissipation. Overheating of the current transformer directly leads to distortion of its output current detection signal, preventing the DCS controller from accurately obtaining the actual current state of the cover glass channel. This results in control deviations and severely affects the yield and quality stability of the cover glass. Summary of the Invention

[0004] The purpose of this invention is to provide a method, device, and related products for controlling the heating of a cover glass channel, so as to overcome the problem that the current detection signal is distorted due to the influence of high temperature and high electromagnetic interference on the current transformer in the prior art, which in turn causes deviation in the heating temperature control of the cover glass channel.

[0005] The present invention solves the above-mentioned technical problems through the following technical solution: This invention provides a method for controlling the heating of a cover glass channel, comprising the following steps: S1. Obtain the current signal to be transmitted to the cover glass channel, and calculate the input current of the cover glass channel based on the current signal to be transmitted. S2. Determine whether the input current is less than the preset value. If the determination is yes, heat the cover glass channel based on the current input current. If the determination is no, proceed to step S3. S3. Adjust the input current of the cover glass channel based on the preset reduction percentage, and return to step S2.

[0006] A further improvement of the present invention is that the adjustment of the input current of the cover glass channel based on a preset reduction percentage is specifically as follows:

[0007] Where A is the input current of the cover glass channel; is the adjusted input current for the cover glass channel; 'a' is the preset reduction percentage.

[0008] A further improvement of the present invention is that the preset reduction percentage ranges from 0.1% to 1%.

[0009] A further improvement of this invention is that the calculation of the input current of the cover glass channel based on the current signal to be transmitted specifically involves:

[0010] Where A is the input current of the cover glass channel; B is the current signal to be transmitted to the cover glass channel; and C is the current range.

[0011] A further improvement of the present invention is that the range of the current signal to be transmitted to the cover glass channel is 4~20mA.

[0012] The present invention provides a heating control device for a cover glass channel, comprising a DCS controller, a power regulator, a transformer, a current transformer and a cover glass channel connected in sequence along the current transmission direction, wherein the DCS controller is electrically connected to the current transformer via a current transmitter and the current transformer is connected to the DCS controller via a current transmitter. In use, the DCS controller acquires the current signal to be transmitted to the cover glass channel in sequence through the current transformer and the current transmitter. Based on the current signal to be transmitted, the input current of the cover glass channel is calculated. When the input current is less than the preset value, the DCS controller transmits the current input current to the cover glass channel in sequence through the power regulator, the transformer and the current transformer to heat the cover glass channel. When the input current is greater than or equal to the preset value, the DCS controller adjusts the input current of the cover glass channel based on the preset reduction percentage until the input current is less than the preset value.

[0013] A further improvement of the present invention is that it also includes a cooling device, wherein the body of the current transformer is disposed inside the cooling device, and the cooling device is used to cool the temperature of the current transformer.

[0014] The present invention also provides a computer device, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps of the charging pile temperature control method based on the PID algorithm described above.

[0015] The present invention also provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the steps of the charging pile temperature control method based on the PID algorithm described above.

[0016] The present invention also provides a computer program product, including a computer program that, when executed by a processor, implements the steps of the charging pile temperature control method based on the PID algorithm described above.

[0017] Compared with the prior art, the positive and progressive effects of the present invention are as follows: The cover glass channel heating control method provided by the present invention (1) obtains the current signal to be transmitted to the cover glass channel, calculates the input current of the cover glass channel based on the current signal to be transmitted, and iteratively adjusts the input current below the preset value, and maintains the heating efficiency through real-time calculation and iterative adjustment; (2) actively prevents the current transformer from overheating, effectively suppresses the signal distortion caused by the overheating of the current transformer, ensures the authenticity of the detection signal, and thus improves the yield and quality stability of the cover glass. Attached Figure Description

[0018] The accompanying drawings are provided to further understand the invention and constitute a part of this invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0019] Figure 1 This is a schematic diagram of the cooling device of the present invention.

[0020] Figure 2 This is a cross-sectional view of the cooling device of the present invention.

[0021] Figure 3 This is the air-cooled cover of the cooling device of the present invention.

[0022] Figure 4 This is a schematic flowchart of a heating control method for a cover glass channel according to the present invention.

[0023] Figure 5 This is a block diagram of a heating control method for a cover glass channel according to the present invention.

[0024] The components include: 1. Cooling device; 2. Current transformer; 3. Air inlet; 4. Fixing screws; 5. Air outlet; and 6. Fixing block. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] In the description of this invention, it should be understood that the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0027] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0028] It should be understood that although terms such as first, second, third, etc., may be used in the embodiments of the present invention to describe the preset range, these preset ranges should not be limited to these terms. These terms are only used to distinguish the preset ranges from one another. For example, without departing from the scope of the embodiments of the present invention, the first preset range may also be referred to as the second preset range, and similarly, the second preset range may also be referred to as the first preset range.

[0029] Depending on the context, the word "if" as used here can be interpreted as "when," "when," "in response to determination," or "in response to detection." Similarly, depending on the context, the phrase "if determination" or "if detection (of the stated condition or event)" can be interpreted as "when determination," "in response to determination," "when detection (of the stated condition or event)," or "in response to detection (of the stated condition or event)."

[0030] The accompanying drawings illustrate various structural schematic diagrams according to embodiments disclosed in this invention. These drawings are not to scale, and some details have been enlarged for clarity, and some details may have been omitted. The shapes of the various regions and layers shown in the drawings, as well as their relative sizes and positional relationships, are merely exemplary and may deviate from reality due to manufacturing tolerances or technical limitations. Furthermore, those skilled in the art can design regions / layers with different shapes, sizes, and relative positions as needed.

[0031] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. This is an explanation of the present invention and not a limitation thereof.

[0032] See Figure 5 A method for controlling the heating of a cover glass channel includes the following steps: S1. Obtain the current signal to be transmitted to the cover glass channel, and calculate the input current of the cover glass channel based on the current signal to be transmitted. S2. Determine whether the input current is less than the preset value. If the determination is yes, heat the cover glass channel based on the current input current. If the determination is no, proceed to step S3. S3. Adjust the input current of the cover glass channel based on the preset reduction percentage, and return to step S2.

[0033] The preset value refers to the pre-set safe current threshold, which can be determined according to the heat dissipation performance of the current transformer and the working environment. This threshold is used to trigger the protection mechanism.

[0034] This method maintains heating efficiency and proactively prevents current transformer overheating through real-time calculation and iterative adjustment. For example, traditional methods directly cut off the power supply upon detecting overcurrent, leading to production interruptions, while this solution maintains continuous production through gradual adjustment. Furthermore, existing technologies rely on manually setting static thresholds, while this solution automatically optimizes adjustment parameters based on equipment status, improving control accuracy. Through these technical solutions, this method effectively suppresses signal distortion caused by current transformer overheating, ensuring the authenticity of the detection signal. This improves the uniformity of the glass melting state, reduces surface defects caused by temperature fluctuations, and raises the finished product's light transmittance to within the required process range. Simultaneously, the current regulation mechanism extends the lifespan of the current transformer and reduces the frequency of downtime due to equipment failure.

[0035] Specifically, the adjustment of the input current of the cover glass channel based on a preset reduction percentage is as follows:

[0036] Where A is the input current of the cover glass channel; is the adjusted input current for the cover glass channel; 'a' is the preset reduction percentage.

[0037] Specifically, the preset reduction percentage ranges from 0.1% to 1%.

[0038] The preset reduction percentage refers to a fixed proportional parameter used each time the input current is adjusted. This parameter can be configured through the parameter setting module of the DCS controller, and it controls the rate of decrease in the input current. When the input current exceeds the preset value, the system automatically multiplies the original input current by a coefficient of (1-a) to generate the adjusted current value. If the original input current is 100A and the preset reduction percentage is 0.5%, the adjusted current value will be 99.5A. This adjustment process is repeatedly executed through a loop judgment mechanism until the input current drops below the preset value. By gradually reducing the current proportionally, drastic temperature fluctuations caused by sudden current changes are avoided, and the system continuously approaches the preset safety threshold, thus maintaining the stability of the heating process. This solution achieves gradual adjustment through a preset proportional coefficient, which preserves the continuity of the heating process and ensures the controllability of the adjustment range through precise calculations by a mathematical model. This effectively suppresses the risk of signal distortion caused by overload of the current transformer. It can precisely control the adjustment range of the input current, avoiding temperature runaway or equipment overload caused by sudden current changes. At the same time, it continuously optimizes the current output value through a cyclic detection mechanism, ultimately improving the stability and control accuracy of the cover glass channel heating process and reducing finished product defects caused by current signal distortion.

[0039] Specifically, the calculation of the input current of the cover glass channel based on the current signal to be transmitted is as follows:

[0040] Where A is the input current of the cover glass channel; B is the current signal to be transmitted to the cover glass channel; and C is the current range.

[0041] Specifically, the range of the current signal to be transmitted to the cover glass channel is 4~20 mA.

[0042] During the heating control of the cover glass channel, the current transformer continuously collects channel current parameters and generates a corresponding current signal to be transmitted. By limiting the signal range to 4~20 mA, the signal strength can be ensured to meet the anti-interference requirements of long-distance transmission while also being compatible with industrial standard instruments. When the signal is within this range, the DCS controller can accurately identify the valid signal, avoiding misjudgments caused by signal drift or noise interference. This application ensures the transmission stability of the current detection signal in a high-temperature electromagnetic environment, avoiding control command deviations caused by abnormal signal amplitude, thereby improving the precise control capability of the cover glass channel heating temperature and ensuring glass forming quality and product yield.

[0043] See Figures 1-3Based on the same inventive concept, the present invention also provides a cover glass channel heating control device, including a DCS controller, a power regulator, a transformer, a current transformer and a cover glass channel connected in sequence along the current transmission direction, wherein the DCS controller is electrically connected to the current transformer via a current transmitter and the current transformer is connected to the DCS controller via a current transmitter. See Figure 4 In use, the DCS controller acquires the current signal to be transmitted to the cover glass channel in sequence through the current transformer and the current transmitter. Based on the current signal to be transmitted, the input current of the cover glass channel is calculated. When the input current is less than the preset value, the DCS controller transmits the current input current to the cover glass channel in sequence through the power regulator, the transformer and the current transformer to heat the cover glass channel. When the input current is greater than or equal to the preset value, the DCS controller adjusts the input current of the cover glass channel based on the preset reduction percentage until the input current is less than the preset value.

[0044] The DCS controller directly acquires the current signal to be transmitted from the current transformer via electrical connection and calculates the required input current for the cover glass channel based on a preset algorithm. When the input current does not exceed a preset threshold, the DCS controller sends the current parameter to the power regulator, and the adjusted current is then delivered to the cover glass channel via a transformer and current transformer to perform the heating operation. If the input current exceeds the preset threshold, the DCS controller initiates a preset percentage reduction algorithm, gradually reducing the input current through multiple iterations until the preset conditions are met. The entire process forms a closed-loop control, ensuring that the current parameter is always within a safe range.

[0045] Specifically, it also includes a cooling device, with the current transformer body located inside the cooling device, which is used to cool the temperature of the current transformer.

[0046] By incorporating a cooling device into the current transformer body, overheating is effectively suppressed. Simultaneously, a multi-level linkage control architecture involving a DCS controller, power regulator, and transformer is employed to construct a dynamic adjustment mechanism, preventing control failures caused by a single device malfunction. Through these technical solutions, this application addresses the problem of signal distortion in current transformers under high-temperature environments. Active cooling and closed-loop control ensure current detection accuracy, thereby improving the stability of the cover glass channel heating control. The coordinated operation of the power regulator and transformer enables precise adjustment of current parameters, and the real-time monitoring function of the DCS controller effectively prevents the risk of current over-limit, ultimately ensuring the reliability of temperature control during cover glass production.

[0047] In a specific embodiment of the present invention, the cooling device is completed by connecting two air-cooled covers together, and a fixing block is used to clamp them onto the current transformer. The two air-cooled covers are then fixed with fixing screws. The air-cooled covers are made of materials with good insulation properties such as plastic and rubber. There is an air inlet on the outside and an air outlet on all four sides inside, which facilitates the uniform removal of heat from the current transformer by the cool air, keeping the temperature of the current transformer within 20±5℃.

[0048] In a specific embodiment of the present invention, the channel current in the cover glass industry can reach up to 6000A. To ensure current stability, firstly, a cooling device is installed on the current transformer; secondly, the input current of the cover glass channel is limited by the DCS control system.

[0049] This method strengthens the control of the input current in the cover glass channel, protecting against excessive current caused by overheating of the current transformer, and thus ensuring stable production.

[0050] Based on the same inventive concept, this application provides a computer device including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the steps of a charging pile temperature control method based on a PID algorithm. The memory may include main memory, such as high-speed random access memory, or it may also include non-volatile memory, such as at least one disk storage device. The processor, network interface, and memory are interconnected via an internal bus, which may be an industry-standard architecture bus, a peripheral component interconnection standard bus, an extended industry-standard architecture bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. The memory stores the program; specifically, the program may include program code, which includes computer operation instructions. The memory may include main memory and non-volatile memory, and provides instructions and data to the processor.

[0051] Based on the same inventive concept, embodiments of this application provide a computer-readable storage medium storing a computer program. When executed by a processor, the computer program implements the steps of the charging pile temperature control method based on the PID algorithm. Specifically, the computer-readable storage medium includes, but is not limited to, volatile memory and / or non-volatile memory. The volatile memory may include RAM (Random Access Memory) and / or cache memory, etc. The non-volatile memory may include ROM (Read Only Memory), hard disk, flash memory, optical disk, magnetic disk, etc.

[0052] Based on the same inventive concept, this application provides a computer program product, which includes a computer program stored on a computer-readable storage medium. The computer program includes program instructions, which, when executed by a computer device, cause the computer device to perform the steps of the above-described charging pile temperature control method based on the PID algorithm.

[0053] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM (Compact Disc Read-Only Memory), optical storage, etc.) containing computer-usable program code.

[0054] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0055] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0056] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0057] Finally, it should be noted that the embodiments listed above are merely one or more specific manifestations of the technical solution of this invention. Their purpose is to clearly illustrate the concept, principle, and application of this invention through specific examples, and is by no means intended to limit the scope of protection of this invention to these specific embodiments. In fact, the true value of this invention lies in its proposed technical ideas and innovations, rather than its manifestations or implementation methods.

[0058] For those skilled in the art, after thoroughly reading and understanding the technical solution of this invention, they are fully capable of making various changes, modifications, or equivalent substitutions to the specific implementation of the invention based on their own professional knowledge and skills. These changes may include, but are not limited to: adjusting the range of technical parameters, optimizing the algorithm flow to improve efficiency, and replacing some technical components to achieve better compatibility or reduce costs. As long as these modified technical solutions substantially retain the technical features claimed by the original invention, that is, they can still achieve the core functions and effects of this invention, then these changes should be considered to fall within the scope of protection of the pending claims of this invention.

[0059] Furthermore, with the continuous progress and development of technology, new technical means and methods are constantly emerging, which provides ample space for further improvement and perfection of this invention. Therefore, the scope of protection of this invention should also include reasonable and foresightful improvements and extensions based on existing technology. As long as these improvements and extensions do not depart from the basic principles and core concepts of this invention, they should be considered equivalents of this invention and are equally protected by patent rights.

Claims

1. A method for controlling the heating of a cover glass channel, characterized in that, Includes the following steps: S1. Obtain the current signal to be transmitted to the cover glass channel, and calculate the input current of the cover glass channel based on the current signal to be transmitted. S2. Determine whether the input current is less than the preset value. If the determination is yes, heat the cover glass channel based on the current input current. If the result is negative, proceed to step S3. S3. Adjust the input current of the cover glass channel based on the preset reduction percentage, and return to step S2.

2. The method for controlling the heating of a cover glass channel according to claim 1, characterized in that, The adjustment of the input current of the cover glass channel based on the preset reduction percentage is specifically as follows: Where A is the input current of the cover glass channel; is the adjusted input current for the cover glass channel; 'a' is the preset reduction percentage.

3. The method for controlling the heating of a cover glass channel according to claim 2, characterized in that, The preset reduction percentage ranges from 0.1% to 1%.

4. The method for controlling the heating of a cover glass channel according to claim 1, characterized in that, The calculation of the input current of the cover glass channel based on the current signal to be transmitted is specifically as follows: Where A is the input current of the cover glass channel; B is the current signal to be transmitted to the cover glass channel; and C is the current range.

5. A method for controlling the heating of a cover glass channel according to claim 1, characterized in that, The range of the current signal to be transmitted to the cover glass channel is 4~20 mA.

6. A heating control device for a cover glass channel, characterized in that, It includes a DCS controller, a power regulator, a transformer, a current transformer and a cover glass channel connected in sequence along the current transmission direction, wherein the DCS controller is electrically connected to the current transformer via a current transmitter and the current transformer is connected to the DCS controller via a current transmitter. In use, the DCS controller acquires the current signal to be transmitted to the cover glass channel in sequence through the current transformer and the current transmitter. Based on the current signal to be transmitted, the input current of the cover glass channel is calculated. When the input current is less than the preset value, the DCS controller transmits the current input current to the cover glass channel in sequence through the power regulator, the transformer and the current transformer to heat the cover glass channel. When the input current is greater than or equal to the preset value, the DCS controller adjusts the input current of the cover glass channel based on the preset reduction percentage until the input current is less than the preset value.

7. The apparatus for controlling the heating of a cover glass channel according to claim 6, characterized in that, It also includes a cooling device, with the current transformer body located inside the cooling device, which is used to cool the temperature of the current transformer.

8. A computer device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the cover glass channel heating control method according to any one of claims 1 to 5.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the steps of the cover glass channel heating control method according to any one of claims 1 to 5.

10. A computer program product, comprising a computer program, characterized in that, When executed by a processor, the computer program implements the steps of the cover glass channel heating control method according to any one of claims 1 to 5.

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