A method and system for correcting a target web
By setting color mark sensors on the parallel edges of the target roll material and combining photoelectric sensors and color mark sensors, the problem of correction caused by sensor recognition errors is solved, achieving precise correction control and avoiding material damage and waste.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- TIMACO (BEIJING) IND TECH CO LTD
- Filing Date
- 2023-11-21
- Publication Date
- 2026-06-05
AI Technical Summary
In the prior art, the use of tape causes the sensor to fail to correctly identify the edge, marking line or marking edge of the material, resulting in the correction device not working or malfunctioning, causing material breakage or waste.
By setting color mark sensors on two parallel edges of the target roll material, photoelectric sensors are used to determine the positional offset, and the edge and correction direction are determined by combining the color calibration of the color mark sensors, and the driver is controlled to perform precise correction control.
It achieves precise deviation control of the target roll material, avoiding secondary damage and waste of the material.
Smart Images
Figure CN117755879B_ABST
Abstract
Description
Technical Field
[0001] The embodiments in this specification relate to the field of web correction control technology, and in particular to a method and system for web correction control of a target roll material. Background Technology
[0002] In the actual production of roll materials, when changing rolls, two rolls of material are glued together with tape, which eliminates the need for threading. Similarly, if the material is torn, it needs to be spliced back together, which is also done with tape. However, due to the tape, sensors may fail to correctly identify the edges, marking lines, or marking edges of the material, causing the correction device to malfunction or fail to operate, resulting in further material breakage or waste.
[0003] Therefore, it is of great significance to effectively identify the edges, marking lines, or marking edges of materials in order to perform more precise correction operations. Summary of the Invention
[0004] In view of this, embodiments of this specification provide a method for correcting the web alignment of a target web. One or more embodiments of this specification also relate to a system for correcting the web alignment of a target web, a computing device, a computer-readable storage medium, and a computer program, to address the technical deficiencies existing in the prior art.
[0005] According to a first aspect of the embodiments of this specification, a method for correcting the web orientation of a target roll material is provided. The target roll material includes two edges parallel to the transport direction, and at least two color mark sensors are disposed on the edges. The method is applied to a system including color mark sensors, photoelectric sensors, drivers, and controllers. The method includes:
[0006] The controller determines whether the target roll material has shifted position based on the photoelectric sensor during the target roll material transmission process;
[0007] After determining that the target roll material has shifted position, the edge of the target roll material and the correction direction are obtained based on the color mark sensor;
[0008] The driver is controlled to perform correction control based on the edge of the target roll and the correction direction.
[0009] In one possible implementation, the method further includes:
[0010] In response to a color mark setting command, the controller sets a first color calibration on one of the color mark sensors and a second color calibration on the other color mark sensor.
[0011] In one possible implementation, the controller acquires the edge of the target roll material and the correction direction based on the color mark sensor, including:
[0012] The controller determines the edge of the target roll material based on the first color calibration and the second color calibration using the color mark sensor, and determines the correction direction of the target roll material based on the proportion information of the first color calibration and the second color calibration in the current scanning range of the color mark sensor.
[0013] In one possible implementation, determining the correction direction of the target roll material based on the proportion information of the first color calibration and the second color calibration within the current scanning range of the color mark sensor includes:
[0014] The correction direction of the target roll material is determined based on the ratio of the first proportion information of the first color calibration in the scanning range of the color mark sensor to the second proportion information of the second color calibration in the scanning range of the color mark sensor.
[0015] In one possible implementation, the controller determines whether the target roll has shifted position based on the photoelectric sensor during the transfer of the target roll, including:
[0016] The controller determines the current correction center pixel of the target roll material based on the position information of the photoelectric sensor;
[0017] The difference between the current correction center pixel and the preset correction center pixel is calculated, and the positional shift of the target roll material is determined based on the difference.
[0018] According to a second aspect of the embodiments of this specification, a system for correcting the web orientation of a target roll material is provided, the target roll material including two edges parallel to the transport direction, the edges being provided with at least two color mark sensors, the system including color mark sensors, a photoelectric sensor, a driver, and a controller, the controller being configured to:
[0019] During the transport of the target roll material, the photoelectric sensor determines whether the target roll material has experienced a positional shift.
[0020] After determining that the target roll material has shifted position, the edge of the target roll material and the correction direction are obtained based on the color mark sensor;
[0021] The driver is controlled to perform correction control based on the edge of the target roll and the correction direction.
[0022] In one possible implementation, the controller is further configured to:
[0023] In response to a color mark setting command, the controller sets a first color calibration on one of the color mark sensors and a second color calibration on the other color mark sensor.
[0024] In one possible implementation, the controller acquires the edge of the target roll material and the correction direction based on the color mark sensor, including:
[0025] The edge of the target roll material is determined by the color mark sensor based on the first color calibration and the second color calibration, and the correction direction of the target roll material is determined based on the proportion information of the first color calibration and the second color calibration in the current scanning range of the color mark sensor.
[0026] In one possible implementation, determining the correction direction of the target roll material based on the proportion information of the first color calibration and the second color calibration within the current scanning range of the color mark sensor includes:
[0027] The correction direction of the target roll material is determined based on the ratio of the first proportion information of the first color calibration in the scanning range of the color mark sensor to the second proportion information of the second color calibration in the scanning range of the color mark sensor.
[0028] In one possible implementation, acquiring the edge and correction direction of the target roll material based on the color mark sensor includes:
[0029] The current correction center pixel of the target roll material is determined based on the position information of the photoelectric sensor;
[0030] The difference between the current correction center pixel and the preset correction center pixel is calculated, and the positional shift of the target roll material is determined based on the difference.
[0031] According to a third aspect of the embodiments of this specification, a computing device is provided, comprising:
[0032] Memory and processor;
[0033] The memory is used to store computer-executable instructions, and the processor is used to execute the computer-executable instructions. When the computer-executable instructions are executed by the processor, they implement the steps of the above-described method for correcting the web alignment of the target roll.
[0034] According to a fourth aspect of the embodiments of this specification, a computer-readable storage medium is provided that stores computer-executable instructions, which, when executed by a processor, implement the steps of the method for correcting web alignment of a target roll material as described above.
[0035] According to a fifth aspect of the embodiments of this specification, a computer program is provided, wherein when the computer program is executed in a computer, it causes the computer to perform the steps of the method for correcting the web alignment of a target web.
[0036] In one embodiment of this specification, the controller determines whether the target roll has shifted position during the transport of the target roll using a photoelectric sensor. After determining that the target roll has shifted position, it acquires the edge and correction direction of the target roll based on a color mark sensor. Based on the edge and correction direction of the target roll, the controller performs correction control, thereby enabling more precise correction control by acquiring the edge and correction direction of the target roll through the color mark sensor and then controlling the controller based on the edge and correction direction of the target roll, thus avoiding secondary damage to the roll. Attached Figure Description
[0037] Figure 1 This is a flowchart illustrating a method for corrective control of a target roll material according to one embodiment of this specification;
[0038] Figure 2 This is a schematic diagram of a system for correcting the deviation of a target roll material, provided in one embodiment of this specification.
[0039] Figure 3 This is a structural block diagram of a computing device provided in one embodiment of this specification. Detailed Implementation
[0040] Many specific details are set forth in the following description to provide a full understanding of this specification. However, this specification can be implemented in many other ways than those described herein, and those skilled in the art can make similar extensions without departing from the spirit of this specification. Therefore, this specification is not limited to the specific implementations disclosed below.
[0041] The terminology used in one or more embodiments of this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the one or more embodiments of this specification. The singular forms “a” and “the” as used in one or more embodiments of this specification and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used in one or more embodiments of this specification refers to and includes any or all possible combinations of one or more associated listed items.
[0042] It should be understood that although the terms first, second, etc., may be used to describe various information in one or more embodiments of this specification, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, first may also be referred to as second without departing from the scope of one or more embodiments of this specification, and similarly, second may also be referred to as first. Depending on the context, the word "if" as used herein may be interpreted as "when," "when," or "in response to a determination."
[0043] This specification provides a method for controlling the web alignment of a target web material. It also relates to a system for controlling the web alignment of a target web material, a computing device, and a computer-readable storage medium, which will be described in detail in the following embodiments.
[0044] See Figure 1 , Figure 1 A flowchart is shown of a method for correcting the web alignment of a target web according to an embodiment of this specification. The target web includes two edges parallel to the transport direction, and at least two color mark sensors are disposed on the edges. The method is applied to a system including color mark sensors, photoelectric sensors, drivers, and controllers. The method specifically includes the following steps.
[0045] Step 101: During the transfer of the target roll material, the controller uses photoelectric sensors to determine whether the target roll material has shifted position.
[0046] The target roll includes two edges parallel to the transport direction, which can be understood as the length direction of the target roll after it is unfolded.
[0047] The photoelectric sensor is used to detect whether the target roll material has entered the preset detection area and whether the target roll material has deviated from the preset detection area of the photoelectric sensor; the color mark sensor is used to detect information such as the edge, mark line or mark edge of the target roll material; the driver is used to adjust the position of the target roll material according to the edge of the target roll material and the correction direction received from the controller, so that the edge of the target roll material is transmitted along the preset position.
[0048] In one implementation, to determine whether the target roll material has shifted position, a photoelectric sensor is used to detect the current correction center pixel of the target roll material. Then, the current correction center pixel is compared with a preset correction center pixel to quickly determine whether the target roll material has shifted and perform correction control. The specific implementation method is as follows:
[0049] The controller determines whether the target roll has shifted position based on the photoelectric sensor during the transfer of the target roll, including:
[0050] The controller determines the current correction center pixel of the target roll material based on the position information of the photoelectric sensor;
[0051] The difference between the current correction center pixel and the preset correction center pixel is calculated, and the positional shift of the target roll material is determined based on the difference.
[0052] Specifically, if the difference between the current correction center pixel and the preset correction center pixel exceeds a certain difference threshold, it can be determined that the target roll material has shifted position.
[0053] For example, if the absolute value of the difference between the current correction center pixel and the preset correction center pixel is greater than the difference threshold of 5, it can be determined that the target roll material has shifted position.
[0054] Optionally, if the current correction center pixel is different from the preset correction center pixel, it is determined that the target roll has shifted position.
[0055] Step 102: After determining that the target roll material has shifted position, the edge of the target roll material and the correction direction are obtained based on the color mark sensor.
[0056] Specifically, after the controller determines that the target roll material has shifted position using the photoelectric sensor, it sends a command to the color mark sensor, which then obtains the edge of the target roll material and the correction direction.
[0057] In one embodiment, before performing the target roll material correction control, the color mark sensor needs to be configured so that the edge of the target roll material and the correction direction can be determined more accurately after the target roll material shifts position. The specific implementation method is as follows:
[0058] Before the controller determines whether the target roll material has shifted position based on the color mark sensor during the target roll material transfer process, the method further includes:
[0059] In response to a color mark setting command, the controller sets a first color calibration on one of the color mark sensors and a second color calibration on the other color mark sensor.
[0060] The first color designation can be the color designation corresponding to the target roll material, and the second color designation can be a color designation other than the color designation corresponding to the target roll material.
[0061] Specifically, the controller can set a first color mark corresponding to the color mark of the target roll material on one of the two color mark sensors set on the edge of the target roll material according to the received color mark setting instruction. This is used to detect whether the target roll material exists within the range of the color mark sensor. The controller can also set a second color mark outside the color mark corresponding to the target roll material on the other color mark sensor.
[0062] After setting the first and second color calibrations, the edge and correction direction of the target roll material can be detected by the color mark sensor. The specific implementation method is as follows:
[0063] The controller acquires the edge and correction direction of the target roll material based on the color mark sensor, including:
[0064] The controller determines the edge of the target roll material based on the first color calibration and the second color calibration using the color mark sensor, and determines the correction direction of the target roll material based on the proportion information of the first color calibration and the second color calibration in the current scanning range of the color mark sensor.
[0065] Specifically, the color mark sensor determines the edge of the target roll material based on the difference between the first color mark and the second color mark, and determines the offset direction of the target roll material by using the range information of each color mark within the current scanning range of the color mark sensor, and then determines the correction direction of the target roll material.
[0066] In one implementation, the correction direction of the target roll material is determined based on the proportion of the first color calibration and the second color calibration within the current scanning range of the color mark sensor. This can be determined by the ratio of the respective proportions of the first color calibration and the second color calibration, as shown in the following specific implementation:
[0067] The step of determining the correction direction of the target roll material based on the proportion information of the first color calibration and the second color calibration in the current scanning range of the color mark sensor includes:
[0068] The correction direction of the target roll material is determined based on the ratio of the first proportion information of the first color calibration in the scanning range of the color mark sensor to the second proportion information of the second color calibration in the scanning range of the color mark sensor.
[0069] Specifically, the controller obtains the first proportion information of the first color mark in the current scanning range of the color mark sensor and the second proportion information of the second color mark in the current scanning range of the color mark sensor through the color mark sensor. Then, based on the ratio of the first proportion information to the second proportion information, it determines whether the ratio is greater than a preset proportion threshold. If it is determined that the ratio is less than the preset proportion threshold, the correction direction of the target roll is determined in combination with the edge of the target roll.
[0070] For example, dividing the first proportion information by the second proportion information yields a ratio of 1.5, which is less than the preset proportion threshold of 4. Combined with the fact that the right edge of the target roll is more than the left edge, it can be determined that the target roll is shifted to the left, and thus the correction direction of the target roll is determined to be to the right.
[0071] Step 103: Control the driver to perform correction control based on the edge of the target roll and the correction direction.
[0072] Specifically, the controller generates a correction command based on the edge of the target roll and the correction direction, and sends it to the driver to control the driver to perform corresponding correction control operations on the target roll.
[0073] In one embodiment of this specification, the controller determines whether the target roll has shifted position during the transport of the target roll using a photoelectric sensor. After determining that the target roll has shifted position, it acquires the edge and correction direction of the target roll based on a color mark sensor. Based on the edge and correction direction of the target roll, the controller performs correction control, thereby enabling more precise correction control by acquiring the edge and correction direction of the target roll through the color mark sensor and then controlling the controller based on the edge and correction direction of the target roll, thus avoiding secondary damage to the roll.
[0074] Corresponding to the above method embodiments, this specification also provides a system embodiment for correcting the web surface of a target roll material. Figure 2 A schematic diagram of a system for controlling the web alignment of a target roll material according to an embodiment of this specification is shown. The target roll material includes two edges parallel to the transport direction, and at least two color mark sensors are disposed on the edges. The system includes a color mark sensor 201, a photoelectric sensor 202, a driver 203, and a controller 204, which is further configured to:
[0075] During the transport of the target roll material, the photoelectric sensor determines whether the target roll material has experienced a positional shift.
[0076] After determining that the target roll material has shifted position, the edge of the target roll material and the correction direction are obtained based on the color mark sensor;
[0077] The driver is controlled to perform correction control based on the edge of the target roll and the correction direction.
[0078] In one possible implementation, the controller 204 is further configured to:
[0079] In response to a color mark setting command, the controller sets a first color calibration on one of the color mark sensors and a second color calibration on the other color mark sensor.
[0080] In one possible implementation, the controller acquires the edge of the target roll material and the correction direction based on the color mark sensor, and the controller 204 is configured to:
[0081] The edge of the target roll material is determined by the color mark sensor based on the first color calibration and the second color calibration, and the correction direction of the target roll material is determined based on the proportion information of the first color calibration and the second color calibration in the current scanning range of the color mark sensor.
[0082] In one possible implementation, the controller 204 is configured to determine the correction direction of the target roll material based on the proportion information of the first color calibration and the second color calibration in the current scanning range of the color mark sensor.
[0083] The correction direction of the target roll material is determined based on the ratio of the first proportion information of the first color calibration in the scanning range of the color mark sensor to the second proportion information of the second color calibration in the scanning range of the color mark sensor.
[0084] In one possible implementation, based on the color mark sensor acquiring the edge and correction direction of the target roll material, the controller 204 is configured to:
[0085] The current correction center pixel of the target roll material is determined based on the position information of the photoelectric sensor;
[0086] The difference between the current correction center pixel and the preset correction center pixel is calculated, and the positional shift of the target roll material is determined based on the difference.
[0087] The above is an illustrative scheme of a system for correcting the web rotation of a target roll material according to this embodiment. It should be noted that the technical solution of this system for correcting the web rotation of a target roll material belongs to the same concept as the technical solution of the method for correcting the web rotation of a target roll material described above. For details not described in detail in the technical solution of the system for correcting the web rotation of a target roll material, please refer to the description of the technical solution of the method for correcting the web rotation of a target roll material described above.
[0088] Figure 3 A structural block diagram of a computing device 300 according to one embodiment of this specification is shown. The components of the computing device 300 include, but are not limited to, a memory 310 and a processor 320. The processor 320 is connected to the memory 310 via a bus 330, and a database 350 is used to store data.
[0089] The computing device 300 also includes an access device 340, which enables the computing device 300 to communicate via one or more networks 360. Examples of these networks include Public Switched Telephone Network (PSTN), Local Area Network (LAN), Wide Area Network (WAN), Personal Area Network (PAN), or combinations of communication networks such as the Internet. The access device 340 may include one or more of any type of wired or wireless network interface (e.g., a network interface card (NIC)), such as an IEEE 802.11 Wireless Local Area Network (WLAN) wireless interface, a Wi-MAX (Worldwide Interoperability for Microwave Access) interface, an Ethernet interface, a Universal Serial Bus (USB) interface, a cellular network interface, a Bluetooth interface, or a Near Field Communication (NFC) interface.
[0090] In one embodiment of this specification, the aforementioned components of the computing device 300 and Figure 3 Other components, not shown, can also be connected to each other, for example, via a bus. It should be understood that... Figure 3 The block diagram of the computing device shown is for illustrative purposes only and is not intended to limit the scope of this specification. Those skilled in the art can add or replace other components as needed.
[0091] The computing device 300 can be any type of stationary or mobile computing device, including mobile computers or mobile computing devices (e.g., tablet computers, personal digital assistants, laptop computers, notebook computers, netbooks, etc.), mobile phones (e.g., smartphones), wearable computing devices (e.g., smartwatches, smart glasses, etc.) or other types of mobile devices, or stationary computing devices such as desktop computers or personal computers (PCs). The computing device 300 can also be a mobile or stationary server.
[0092] The processor 320 executes computer-executable instructions, which, when executed by the processor, implement the steps of the method for correcting the web rotation of the target web material as described above. The above is an illustrative scheme of a computing device according to this embodiment. It should be noted that the technical solution of this computing device and the technical solution of the method for correcting the web rotation of the target web material described above belong to the same concept. Details not described in detail in the technical solution of the computing device can be found in the description of the technical solution of the method for correcting the web rotation of the target web material described above.
[0093] An embodiment of this specification also provides a computer-readable storage medium storing computer-executable instructions that, when executed by a processor, implement the steps of the method for correcting the web alignment of the target roll material as described above.
[0094] The above is an illustrative scheme of a computer-readable storage medium according to this embodiment. It should be noted that the technical solution of this storage medium and the technical solution of the above-described method for correcting the web rotation of a target roll material belong to the same concept. For details not described in detail in the technical solution of the storage medium, please refer to the description of the technical solution of the above-described method for correcting the web rotation of a target roll material.
[0095] An embodiment of this specification also provides a computer program, wherein when the computer program is executed in a computer, it causes the computer to perform the steps of the above-described method for correcting the web alignment of the target roll material.
[0096] The above is an illustrative scheme of a computer program according to this embodiment. It should be noted that the technical solution of this computer program and the technical solution of the above-described method for correcting the web rotation of a target roll material belong to the same concept. For details not described in detail in the technical solution of the computer program, please refer to the description of the technical solution of the above-described method for correcting the web rotation of a target roll material.
[0097] The foregoing has described specific embodiments of this specification. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims may be performed in a different order than that shown in the embodiments and may still achieve the desired result. Furthermore, the processes depicted in the drawings do not necessarily require the specific or sequential order shown to achieve the desired result. In some embodiments, multitasking and parallel processing are possible or may be advantageous.
[0098] The computer instructions include computer program code, which may be in the form of source code, object code, executable file, or certain intermediate forms. The computer-readable medium may include any entity or device capable of carrying the computer program code, recording media, USB flash drives, portable hard drives, magnetic disks, optical disks, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signals, telecommunication signals, and software distribution media, etc. It should be noted that the content included in the computer-readable medium may be appropriately added to or subtracted according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, computer-readable media may not include electrical carrier signals and telecommunication signals.
[0099] It should be noted that, for the sake of simplicity, the foregoing method embodiments are all described as a series of actions. However, those skilled in the art should understand that the embodiments in this specification are not limited to the described order of actions, because according to the embodiments in this specification, some steps can be performed in other orders or simultaneously. Furthermore, those skilled in the art should also understand that the embodiments described in this specification are all preferred embodiments, and the actions and modules involved are not necessarily essential to the embodiments in this specification.
[0100] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.
[0101] The preferred embodiments disclosed above are merely illustrative of this specification. The optional embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the embodiments described herein. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of the embodiments, thereby enabling those skilled in the art to better understand and utilize this specification. This specification is limited only by the claims and their full scope and equivalents.
Claims
1. A method for correcting and controlling the deviation of a target roll material, characterized in that, The target roll material includes two edges parallel to the transport direction, and at least two color mark sensors are disposed on the edges. The method is applied to a system including color mark sensors, photoelectric sensors, drivers, and controllers. The method includes: The controller determines whether the target roll material has shifted position based on the photoelectric sensor during the target roll material transmission process; After determining that the target roll material has shifted position, the edge of the target roll material and the correction direction are obtained based on the color mark sensor; The driver is controlled to perform correction control based on the edge of the target roll material and the correction direction. Before acquiring the edge and correction direction of the target roll material based on the color mark sensor, the method further includes: In response to a color mark setting command, the controller sets a first color calibration on one of the color mark sensors and a second color calibration on the other color mark sensor; The controller acquires the edge and correction direction of the target roll material based on the color mark sensor, including: The controller determines the edge of the target roll material based on the first color calibration and the second color calibration using the color mark sensor, and determines the correction direction of the target roll material based on the proportion information of the first color calibration and the second color calibration in the current scanning range of the color mark sensor.
2. The method according to claim 1, characterized in that, The step of determining the correction direction of the target roll material based on the proportion information of the first color calibration and the second color calibration in the current scanning range of the color mark sensor includes: The correction direction of the target roll material is determined based on the ratio of the first proportion information of the first color calibration in the current scanning range of the color mark sensor to the second proportion information of the second color calibration in the current scanning range of the color mark sensor.
3. The method according to claim 1, characterized in that, The controller determines whether the target roll has shifted position based on the photoelectric sensor during the transfer of the target roll, including: The controller determines the current correction center pixel of the target roll material based on the position information of the photoelectric sensor; The difference between the current correction center pixel and the preset correction center pixel is calculated, and the positional shift of the target roll material is determined based on the difference.
4. A system for correcting the deviation of a target roll material, characterized in that, The target roll material includes two edges parallel to the transport direction, and at least two color mark sensors are disposed on the edges. The system includes color mark sensors, photoelectric sensors, drivers, and a controller, wherein the controller is configured to: During the transport of the target roll material, the photoelectric sensor determines whether the target roll material has experienced a positional shift. After determining that the target roll material has shifted position, the edge of the target roll material and the correction direction are obtained based on the color mark sensor; The driver is controlled to perform correction control based on the edge of the target roll material and the correction direction. The controller is also configured to: In response to a color mark setting command, the controller sets a first color calibration on one of the color mark sensors and a second color calibration on the other color mark sensor; The controller acquires the edge and correction direction of the target roll material based on the color mark sensor, including: The edge of the target roll material is determined by the color mark sensor based on the first color calibration and the second color calibration, and the correction direction of the target roll material is determined based on the proportion information of the first color calibration and the second color calibration in the current scanning range of the color mark sensor.
5. The system according to claim 4, characterized in that, The step of determining the correction direction of the target roll material based on the proportion information of the first color calibration and the second color calibration in the current scanning range of the color mark sensor includes: The correction direction of the target roll material is determined based on the ratio of the first proportion information of the first color calibration in the current scanning range of the color mark sensor to the second proportion information of the second color calibration in the current scanning range of the color mark sensor.
6. The system according to claim 4, characterized in that, The step of acquiring the edge and correction direction of the target roll material based on the color mark sensor includes: The current correction center pixel of the target roll material is determined based on the position information of the photoelectric sensor; The difference between the current correction center pixel and the preset correction center pixel is calculated, and the positional shift of the target roll material is determined based on the difference.