A method and system for monitoring vacuum adsorption force in fabric cutting scenarios.

Abstract

This invention provides a method and system for monitoring vacuum adsorption force in fabric cutting scenarios. The monitoring method includes: when the vacuum adsorption force f1 at time t1 is less than the vacuum adsorption force threshold fr, determining whether the vacuum adsorption force f2 at time t2 is less than the vacuum adsorption force f1; if so, obtaining the rate of decrease in vacuum adsorption force; obtaining the time t3 when the vacuum adsorption force f2 theoretically decreases to the minimum vacuum adsorption force f3, and then determining the warning time and the corresponding calculated value of vacuum adsorption force; at the warning time, if the vacuum adsorption force is not greater than the corresponding calculated value, issuing a warning; otherwise, determining whether the vacuum adsorption force at time t3 is not greater than the minimum vacuum adsorption force f3; if so, controlling the cutting machine to stop. The monitoring system includes a controller for implementing the above method. This invention solves the problem that existing vacuum adsorption force monitoring methods applied in automatic cutting processes are not ideal in ensuring the accuracy of cut pieces.

Description

Technical Field

[0001] This invention belongs to the field of vacuum adsorption force monitoring in fabric cutting scenarios, and more specifically, relates to a method and system for monitoring vacuum adsorption force in fabric cutting scenarios. Background Technology

[0002] An automatic cutting table is an automated device used to cut fabric into pieces. It mainly includes a cutting table, a cutting head, an operation panel, a vacuum suction device, and a material collection table. The vacuum suction device is typically connected to an air intake on the cutting table via a conduit. Once activated, it extracts air from between the cutting table surface and the airtight plastic film covering the fabric, using atmospheric pressure to compress the fabric and firmly adhere it to the cutting table. This prevents slippage and displacement between fabric layers during cutting due to the movement of the cutting blades on the cutting head, thus ensuring the accuracy of the cut pieces.

[0003] Currently, to ensure the accuracy of cut pieces, automatic cutting beds are typically equipped with a vacuum adsorption force monitoring system. This system works by continuously detecting whether the vacuum adsorption force provided by the vacuum adsorption device is below a predetermined lower limit. If so, it controls the cutting head to stop moving, halting the cutting process and triggering an alarm. However, because the vacuum adsorption force of existing devices may fluctuate during normal operation, the lower limit is usually set low to reduce accidental shutdowns. In this case, even if the vacuum adsorption force monitoring system detects excessively low adsorption force and stops the cutting bed, the fabric layers may already be slipping due to the movement of the cutting blades on the cutting head. This results in poor accuracy of the final cut pieces, and when the slippage between fabric layers is severe, the corresponding portion of the fabric will be scrapped. Summary of the Invention

[0004] The purpose of this invention is to solve the problem that the existing vacuum adsorption force monitoring method applied to the cutting process of automatic cutting beds is not ideal in ensuring the accuracy of the cut pieces.

[0005] To achieve the above objectives, the present invention provides a method and system for monitoring vacuum adsorption force in fabric cutting scenarios.

[0006] According to a first aspect of the present invention, a method for monitoring vacuum adsorption force in a fabric cutting scenario is provided, wherein the vacuum adsorption force is provided by a vacuum adsorption device for adsorbing the fabric onto the cutting table of a cutting bed.

[0007] The monitoring method includes the following steps:

[0008] Determine whether the vacuum adsorption force f1 at time t1 is less than the vacuum adsorption force threshold fr.

[0009] If it is less than, then obtain the vacuum adsorption force f2 at time t2, and determine whether the vacuum adsorption force f2 is less than the vacuum adsorption force f1.

[0010] If it is less than, then obtain the rate of decrease of vacuum adsorption force during the first time interval between time t2 and time t1;

[0011] The second time interval between time t3 and time t2 is obtained when the vacuum adsorption force f2 decreases to the minimum vacuum adsorption force f3 at the vacuum adsorption force decrease rate. The warning time within the second time interval is determined according to the predetermined warning time determination rule, and the vacuum adsorption force calculated value corresponding to the warning time is obtained.

[0012] Determine whether the actual vacuum adsorption force at the warning time is not greater than the calculated value of the vacuum adsorption force.

[0013] If the value is not greater than the specified value, a warning signal will be sent to the user terminal.

[0014] If it is greater than, then determine whether the actual vacuum adsorption force at time t3 is not greater than the minimum vacuum adsorption force f3. If it is not greater than, then issue an emergency stop signal to stop the cutting bed from cutting.

[0015] Alternatively, the vacuum adsorption force threshold fr is set to be greater than the minimum vacuum adsorption force f3 and less than the ideal vacuum adsorption force fd.

[0016] The minimum vacuum adsorption force f3 is the minimum value of the vacuum adsorption force that can prevent the fabric from shifting during the cutting process.

[0017] The ideal vacuum adsorption force fd is the sum of the minimum vacuum adsorption force f3 and the predetermined vacuum adsorption force redundancy, and is also the set value of the vacuum adsorption force of the vacuum adsorption device.

[0018] Alternatively, the minimum vacuum adsorption force f3 can be determined as follows:

[0019] The minimum vacuum adsorption force f3 is determined based on the pre-obtained mapping relationship between fabric material, fabric thickness and minimum vacuum adsorption force, and based on the material and thickness of the fabric to be cut.

[0020] Optionally, determining the warning time within the second time interval according to the predetermined warning time determination rule includes:

[0021] The second time interval is divided according to a predetermined time unit;

[0022] The warning time is determined based on the predetermined warning signal response duration.

[0023] According to a second aspect of the present invention, a monitoring system for vacuum adsorption force in a fabric cutting scenario is provided, wherein the vacuum adsorption force is provided by a vacuum adsorption device for adsorbing the fabric onto the cutting table of the cutting bed;

[0024] The monitoring system includes a controller and a user terminal;

[0025] The controller is used for:

[0026] Determine whether the vacuum adsorption force f1 at time t1 is less than the vacuum adsorption force threshold fr.

[0027] If it is less than, then obtain the vacuum adsorption force f2 at time t2, and determine whether the vacuum adsorption force f2 is less than the vacuum adsorption force f1.

[0028] If it is less than, then obtain the rate of decrease of vacuum adsorption force during the first time interval between time t2 and time t1;

[0029] The second time interval between time t3 and time t2 is obtained when the vacuum adsorption force f2 decreases to the minimum vacuum adsorption force f3 at the vacuum adsorption force decrease rate. The warning time within the second time interval is determined according to the predetermined warning time determination rule, and the vacuum adsorption force calculated value corresponding to the warning time is obtained.

[0030] Determine whether the actual vacuum adsorption force at the warning time is not greater than the calculated value of the vacuum adsorption force.

[0031] If the value is not greater than the specified value, a warning signal will be sent to the user terminal.

[0032] If it is greater than, then determine whether the actual vacuum adsorption force at time t3 is not greater than the minimum vacuum adsorption force f3. If it is not greater than, then issue an emergency stop signal to stop the cutting bed from cutting.

[0033] Alternatively, the vacuum adsorption force threshold fr is set to be greater than the minimum vacuum adsorption force f3 and less than the ideal vacuum adsorption force fd.

[0034] The minimum vacuum adsorption force f3 is the minimum value of the vacuum adsorption force that can prevent the fabric from shifting during the cutting process.

[0035] The ideal vacuum adsorption force fd is the sum of the minimum vacuum adsorption force f3 and the predetermined vacuum adsorption force redundancy, and is also the set value of the vacuum adsorption force of the vacuum adsorption device.

[0036] Alternatively, the minimum vacuum adsorption force f3 can be determined as follows:

[0037] The minimum vacuum adsorption force f3 is determined based on the pre-obtained mapping relationship between fabric material, fabric thickness and minimum vacuum adsorption force, and based on the material and thickness of the fabric to be cut.

[0038] Optionally, determining the warning time within the second time interval according to the predetermined warning time determination rule includes:

[0039] The second time interval is divided according to a predetermined time unit;

[0040] The warning time is determined based on the predetermined warning signal response duration.

[0041] Optionally, the monitoring system may also include:

[0042] Multiple vacuum adsorption force measurement modules are used to measure the vacuum adsorption force output from multiple pumping ends of the vacuum adsorption device, respectively.

[0043] The controller uses the average value of the multiple vacuum adsorption forces measured by the multiple vacuum adsorption force measurement modules as the vacuum adsorption force provided by the vacuum adsorption device.

[0044] Alternatively, the multiple suction ends of the vacuum adsorption device are respectively connected to multiple suction ports formed on the cutting table;

[0045] Alternatively, multiple suction ends of the vacuum adsorption device are connected to a negative pressure chamber formed below the cutting table, and multiple suction ports of the negative pressure chamber are opened on the cutting table.

[0046] The beneficial effects of this invention are as follows:

[0047] The method for monitoring vacuum adsorption force in fabric cutting scenarios of the present invention includes a vacuum adsorption force reduction re-determination step to eliminate the possibility of normal downward fluctuations in vacuum adsorption force, and a vacuum adsorption force reduction monitoring step implemented after determining that the vacuum adsorption force is showing a downward trend. Specifically, the vacuum adsorption force reduction re-determination step involves: when the vacuum adsorption force f1 at time t1 is detected to be less than the vacuum adsorption force threshold fr, in order to eliminate the interference of normal downward fluctuations in vacuum adsorption force, the vacuum adsorption force provided by the vacuum adsorption device continues to be monitored; if the vacuum adsorption force f2 at time t2 is detected to be less than the vacuum adsorption force f1, it is determined that the vacuum adsorption force is indeed continuously decreasing, and then the vacuum adsorption force reduction rate within the first time interval between time t2 and time t1 is calculated. The vacuum adsorption force reduction monitoring process is as follows: Based on the calculated vacuum adsorption force reduction rate, the time required for the vacuum adsorption force f2 at time t2 to decrease to the minimum vacuum adsorption force f3 is determined, which is the second time interval. Then, based on the second time interval and the warning time determination rule, the warning time and the corresponding calculated value of vacuum adsorption force are determined, and the end point of the second time interval, i.e., time t3, is taken as the emergency stop time. At the same time, the vacuum adsorption force provided by the vacuum adsorption device is continuously monitored. If the actual vacuum adsorption force at the warning time is not greater than the calculated value of vacuum adsorption force at the warning time, a warning is issued. The user can check and adjust the vacuum adsorption device and auxiliary facilities according to the warning signal to restore the vacuum adsorption force to normal. If the actual vacuum adsorption force at the warning time is greater than the calculated value of vacuum adsorption force at the warning time, monitoring continues. If the actual vacuum adsorption force at time t3 is not greater than the minimum vacuum adsorption force f3, the user is bypassed and the cutting bed is directly stopped.

[0048] The method for monitoring vacuum adsorption force in fabric cutting scenarios of the present invention, in a first aspect, based on the vacuum adsorption force reduction and re-determination step, can determine the decreasing trend of vacuum adsorption force after detecting that the vacuum adsorption force f1 is less than the vacuum adsorption force threshold fr, so as to eliminate the interference of normal downward fluctuation of vacuum adsorption force on monitoring. As a result, the minimum vacuum adsorption force f3 can be set higher than the lower limit value of vacuum adsorption force set by the existing vacuum adsorption force monitoring method applied to the automatic cutting process. Therefore, when the actual vacuum adsorption force at time t3 is detected to be no greater than the minimum vacuum adsorption force f3 and the cutting bed is stopped, it can be ensured that the fabric layers will not slip due to the movement of the cutting blade on the cutting head, or at least the slippage will be relatively small. In addition, an early warning step is set. If the vacuum adsorption force returns to normal within the third time interval between the early warning time and the emergency stop time, the cutting bed will not be forced to stop, thereby avoiding the impact of cutting bed stoppage and restart on production efficiency and cutting accuracy.

[0049] As can be seen from the above, the vacuum adsorption force monitoring method in the fabric cutting scenario of the present invention can effectively solve the problem that the existing vacuum adsorption force monitoring methods applied in the automatic cutting process are not ideal in ensuring the accuracy of the cut pieces.

[0050] The vacuum adsorption force monitoring system for fabric cutting scenarios of the present invention and the aforementioned vacuum adsorption force monitoring method for fabric cutting scenarios belong to the same general inventive concept and have at least the same beneficial effects as the aforementioned vacuum adsorption force monitoring method for fabric cutting scenarios, the beneficial effects of which will not be elaborated here.

[0051] Other features and advantages of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0052] The present invention can be better understood by referring to the following description taken in conjunction with the accompanying drawings, in which the same or similar reference numerals are used throughout the drawings to denote the same or similar parts.

[0053] Figure 1 A flowchart illustrating the implementation of a method for monitoring vacuum adsorption force in a fabric cutting scenario according to an embodiment of the present invention is shown.

[0054] Figure 2 A schematic diagram of a vacuum adsorption force monitoring system for fabric cutting scenarios according to an embodiment of the present invention is shown. Detailed Implementation

[0055] To enable those skilled in the art to more fully understand the technical solutions of the present invention, exemplary embodiments of the present invention will be described more comprehensively and in detail below with reference to the accompanying drawings. Obviously, the one or more embodiments of the present invention described below are merely one or more specific ways to implement the technical solutions of the present invention, and are not exhaustive. It should be understood that other ways belonging to a general inventive concept can be used to implement the technical solutions of the present invention, and should not be limited to the embodiments described exemplary. Based on one or more embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0056] Example: Figure 1 A flowchart illustrating the implementation of a method for monitoring vacuum adsorption force in a fabric cutting scenario according to an embodiment of the present invention is shown. (Refer to...) Figure 1 The method for monitoring vacuum adsorption force in fabric cutting scenarios according to the present invention is applied to the process of cutting fabric on a cutting bed. The monitored vacuum adsorption force is provided by a vacuum adsorption device to adsorb the fabric onto the cutting table of the cutting bed.

[0057] The above monitoring method specifically includes the following steps:

[0058] Determine whether the vacuum adsorption force f1 at time t1 is less than the vacuum adsorption force threshold fr.

[0059] If it is less than, then obtain the vacuum adsorption force f2 at time t2, and determine whether the vacuum adsorption force f2 is less than the vacuum adsorption force f1.

[0060] If it is less than, then obtain the rate of decrease of vacuum adsorption force during the first time interval between time t2 and time t1;

[0061] The second time interval between time t3 and time t2 is obtained when the vacuum adsorption force f2 decreases to the minimum vacuum adsorption force f3 at the vacuum adsorption force decrease rate. The warning time within the second time interval is determined according to the predetermined warning time determination rule, and the vacuum adsorption force corresponding to the warning time is obtained.

[0062] Determine whether the actual vacuum adsorption force at the warning time is not greater than the calculated value of the vacuum adsorption force.

[0063] If the value is not greater than the specified value, a warning signal will be sent to the user terminal.

[0064] If it is greater than, then determine whether the actual vacuum adsorption force at time t3 is not greater than the minimum vacuum adsorption force f3. If it is not greater than, then issue an emergency stop signal to stop the cutting bed from cutting.

[0065] Specifically, in this embodiment of the invention, time t1 can be any time during the fabric cutting process on the cutting bed. After detecting that the vacuum adsorption force f1 at time t1 is less than the vacuum adsorption force threshold fr, if the fabric cutting process has ended before time t2, then no subsequent steps are executed and the monitoring ends. After calculating the rate of decrease of vacuum adsorption force, if it is calculated that the vacuum adsorption force f2 has not decreased to the minimum vacuum adsorption force f3, and the fabric cutting process has ended, then no subsequent steps are executed and the monitoring ends. After issuing a warning signal that will be transmitted to the user terminal, monitoring stops, and it is assumed that the user can restore the vacuum adsorption force to normal within the third time interval between the warning time and time t3, or manually stop the machine if it cannot be restored to normal.

[0066] Specifically, in this embodiment of the invention, the rate of decrease of vacuum adsorption force within the first time interval is the ratio of the difference between vacuum adsorption force f1 and vacuum adsorption force f2 to the first time interval.

[0067] Furthermore, in this embodiment of the invention, the vacuum adsorption force threshold fr is set to be greater than the minimum vacuum adsorption force f3 and less than the ideal vacuum adsorption force fd;

[0068] The minimum vacuum adsorption force f3 is the minimum value of the vacuum adsorption force that can prevent the fabric from shifting during the cutting process.

[0069] The ideal vacuum adsorption force fd is the sum of the minimum vacuum adsorption force f3 and the predetermined vacuum adsorption force redundancy, and is also the set value of the vacuum adsorption force of the vacuum adsorption device.

[0070] Furthermore, in this embodiment of the invention, the minimum vacuum adsorption force f3 is determined as follows:

[0071] The minimum vacuum adsorption force f3 is determined based on the pre-obtained mapping relationship between fabric material, fabric thickness and minimum vacuum adsorption force, and based on the material and thickness of the fabric to be cut.

[0072] Furthermore, in this embodiment of the invention, determining the warning time within the second time interval according to the predetermined warning time determination rule includes:

[0073] The second time interval is divided according to a predetermined time unit;

[0074] The warning time is determined based on the predetermined warning signal response duration.

[0075] Specifically, in this embodiment of the invention, the predetermined time unit is seconds. If the second time interval is 600 seconds, the warning signal response time is calculated backward from time t3 to determine the warning time. In actual monitoring, if the vacuum adsorption force decreases rapidly, the second time interval may be less than the warning signal response time. In this case, an immediate warning is issued and the vacuum adsorption force continues to be monitored. If the actual vacuum adsorption force at time t3 is not greater than the minimum vacuum adsorption force f3, the cutting bed is stopped. This setting is to avoid situations where the actual response time of the warning signal is insufficient, leaving the user with insufficient time to intervene and restore the vacuum adsorption force to normal or to manually stop the machine.

[0076] The method for monitoring vacuum adsorption force in fabric cutting scenarios according to this invention sets the ideal vacuum adsorption force fd corresponding to the vacuum adsorption device to be greater than the minimum vacuum adsorption force f3 before cutting the fabric on the cutting table. Then, during the fabric cutting process, the change in the actual vacuum adsorption force is monitored. If a decrease in the actual vacuum adsorption force is detected, no warning is issued immediately, as it may be a normal fluctuation in the vacuum adsorption force of the vacuum adsorption device. Factors that may cause the vacuum adsorption force of the vacuum adsorption device to fluctuate within a certain range include the performance of the vacuum pump, the sealing of the air circuit system, and the material and thickness of the fabric. After detecting a decrease in the actual vacuum adsorption force, the vacuum adsorption force is continuously monitored to determine whether it continues to decrease or increases. If it continues to decrease, it indicates a possible malfunction of the vacuum adsorption device, and subsequent vacuum adsorption force decrease monitoring steps are executed to issue a warning or force a shutdown when the corresponding trigger conditions are met.

[0077] Accordingly, based on the method for monitoring vacuum adsorption force in fabric cutting scenarios proposed in the embodiments of the present invention, the embodiments of the present invention also propose a monitoring system for vacuum adsorption force in fabric cutting scenarios.

[0078] Figure 2 A schematic diagram of the vacuum adsorption force monitoring system in a fabric cutting scenario, according to an embodiment of the present invention, is shown. (Refer to...) Figure 2 The vacuum adsorption force monitoring system for fabric cutting scenarios of the present invention includes a controller and a user terminal;

[0079] The controller is used for:

[0080] Determine whether the vacuum adsorption force f1 at time t1 is less than the vacuum adsorption force threshold fr.

[0081] If it is less than, then obtain the vacuum adsorption force f2 at time t2, and determine whether the vacuum adsorption force f2 is less than the vacuum adsorption force f1.

[0082] If it is less than, then obtain the rate of decrease of vacuum adsorption force during the first time interval between time t2 and time t1;

[0083] The second time interval between time t3 and time t2 is obtained when the vacuum adsorption force f2 decreases to the minimum vacuum adsorption force f3 at the vacuum adsorption force decrease rate. The warning time within the second time interval is determined according to the predetermined warning time determination rule, and the vacuum adsorption force corresponding to the warning time is obtained.

[0084] Determine whether the actual vacuum adsorption force at the warning time is not greater than the calculated value of the vacuum adsorption force.

[0085] If the value is not greater than the specified value, a warning signal will be sent to the user terminal.

[0086] If it is greater than, then determine whether the actual vacuum adsorption force at time t3 is not greater than the minimum vacuum adsorption force f3. If it is not greater than, then issue an emergency stop signal to stop the cutting bed from cutting.

[0087] Furthermore, the vacuum adsorption force monitoring system in the fabric cutting scenario of this embodiment of the invention also includes:

[0088] Multiple vacuum adsorption force measurement modules are used to measure the vacuum adsorption force output from multiple pumping ends of the vacuum adsorption device.

[0089] The controller uses the average value of multiple vacuum adsorption forces measured by multiple vacuum adsorption force measurement modules as the vacuum adsorption force provided by the vacuum adsorption device.

[0090] Furthermore, in this embodiment of the invention, multiple suction ends of the vacuum adsorption device are respectively connected to multiple suction ports formed on the cutting table;

[0091] Alternatively, multiple suction ends of the vacuum adsorption device are connected to a negative pressure chamber formed below the cutting table, and multiple suction ports of the negative pressure chamber are opened above the cutting table.

[0092] While one or more embodiments of the present invention have been described above, those skilled in the art will recognize that the present invention can be implemented in any other form without departing from its spirit and scope. Therefore, the embodiments described above are illustrative and not restrictive, and many modifications and substitutions will be apparent to those skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A method for monitoring vacuum adsorption force in fabric cutting scenarios, characterized in that, The vacuum adsorption force is provided by a vacuum adsorption device, which is used to adsorb the fabric onto the cutting table of the cutting bed. The monitoring method includes: Determine whether the vacuum adsorption force f1 at time t1 is less than the vacuum adsorption force threshold fr. If it is less than, then obtain the vacuum adsorption force f2 at time t2, and determine whether the vacuum adsorption force f2 is less than the vacuum adsorption force f1. If it is less than, then obtain the rate of decrease of vacuum adsorption force during the first time interval between time t2 and time t1; The second time interval between time t3 and time t2 is obtained when the vacuum adsorption force f2 decreases to the minimum vacuum adsorption force f3 at the vacuum adsorption force decrease rate. The warning time within the second time interval is determined according to the predetermined warning time determination rule, and the vacuum adsorption force calculated value corresponding to the warning time is obtained. Determine whether the actual vacuum adsorption force at the warning time is not greater than the calculated value of the vacuum adsorption force. If the value is not greater than the specified value, a warning signal will be sent to the user terminal. If it is greater than, then determine whether the actual vacuum adsorption force at time t3 is not greater than the minimum vacuum adsorption force f3. If it is not greater than, then issue an emergency stop signal to stop the cutting bed from cutting.

2. The method for monitoring vacuum adsorption force in fabric cutting scenarios according to claim 1, characterized in that, The vacuum adsorption force threshold fr is set to be greater than the minimum vacuum adsorption force f3 and less than the ideal vacuum adsorption force fd; The minimum vacuum adsorption force f3 is the minimum value of the vacuum adsorption force that can prevent the fabric from shifting during the cutting process. The ideal vacuum adsorption force fd is the sum of the minimum vacuum adsorption force f3 and the predetermined vacuum adsorption force redundancy, and is also the set value of the vacuum adsorption force of the vacuum adsorption device.

3. The method for monitoring vacuum adsorption force in fabric cutting scenarios according to claim 2, characterized in that, The minimum vacuum adsorption force f3 is determined as follows: The minimum vacuum adsorption force f3 is determined based on the pre-obtained mapping relationship between fabric material, fabric thickness and minimum vacuum adsorption force, and based on the material and thickness of the fabric to be cut.

4. The method for monitoring vacuum adsorption force in fabric cutting scenarios according to claim 1, characterized in that, The step of determining the warning time within the second time interval according to the predetermined warning time determination rule includes: The second time interval is divided according to a predetermined time unit; The warning time is determined based on the predetermined warning signal response duration.

5. A monitoring system for vacuum adsorption force in fabric cutting scenarios, characterized in that, The vacuum adsorption force is provided by a vacuum adsorption device, which is used to adsorb the fabric onto the cutting table of the cutting bed. The monitoring system includes a controller and a user terminal; The controller is used for: Determine whether the vacuum adsorption force f1 at time t1 is less than the vacuum adsorption force threshold fr. If it is less than, then obtain the vacuum adsorption force f2 at time t2, and determine whether the vacuum adsorption force f2 is less than the vacuum adsorption force f1. If it is less than, then obtain the rate of decrease of vacuum adsorption force during the first time interval between time t2 and time t1; The second time interval between time t3 and time t2 is obtained when the vacuum adsorption force f2 decreases to the minimum vacuum adsorption force f3 at the vacuum adsorption force decrease rate. The warning time within the second time interval is determined according to the predetermined warning time determination rule, and the vacuum adsorption force calculated value corresponding to the warning time is obtained. Determine whether the actual vacuum adsorption force at the warning time is not greater than the calculated value of the vacuum adsorption force. If the value is not greater than the specified value, a warning signal will be sent to the user terminal. If it is greater than, then determine whether the actual vacuum adsorption force at time t3 is not greater than the minimum vacuum adsorption force f3. If it is not greater than, then issue an emergency stop signal to stop the cutting bed from cutting.

6. The monitoring system for vacuum adsorption force in fabric cutting scenarios according to claim 5, characterized in that, The vacuum adsorption force threshold fr is set to be greater than the minimum vacuum adsorption force f3 and less than the ideal vacuum adsorption force fd; The minimum vacuum adsorption force f3 is the minimum value of the vacuum adsorption force that can prevent the fabric from shifting during the cutting process. The ideal vacuum adsorption force fd is the sum of the minimum vacuum adsorption force f3 and the predetermined vacuum adsorption force redundancy, and is also the set value of the vacuum adsorption force of the vacuum adsorption device.

7. The monitoring system for vacuum adsorption force in fabric cutting scenarios according to claim 6, characterized in that, The minimum vacuum adsorption force f3 is determined as follows: The minimum vacuum adsorption force f3 is determined based on the pre-obtained mapping relationship between fabric material, fabric thickness and minimum vacuum adsorption force, and based on the material and thickness of the fabric to be cut.

8. The monitoring system for vacuum adsorption force in fabric cutting scenarios according to claim 5, characterized in that, The step of determining the warning time within the second time interval according to the predetermined warning time determination rule includes: The second time interval is divided according to a predetermined time unit; The warning time is determined based on the predetermined warning signal response duration.

9. The monitoring system for vacuum adsorption force in fabric cutting scenarios according to any one of claims 5-8, characterized in that, Also includes: Multiple vacuum adsorption force measurement modules are used to measure the vacuum adsorption force output from multiple pumping ends of the vacuum adsorption device, respectively. The controller uses the average value of the multiple vacuum adsorption forces measured by the multiple vacuum adsorption force measurement modules as the vacuum adsorption force provided by the vacuum adsorption device.

10. The monitoring system for vacuum adsorption force in fabric cutting scenarios according to claim 9, characterized in that, The vacuum adsorption device has multiple suction ends that are connected to multiple suction ports formed on the cutting table. Alternatively, multiple suction ends of the vacuum adsorption device are connected to a negative pressure chamber formed below the cutting table, and multiple suction ports of the negative pressure chamber are opened on the cutting table.

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