A method, device, system and storage medium for controlling the flow rate of coal material

Abstract

The present invention provides a coal material flow control method, device, system and storage medium, belonging to the field of coal material control. The method includes: importing the cross-sectional area of the empty belt of the belt scale on the stacker-reclaimer and the belt speed at the current moment, and obtaining a plurality of point cloud data at the current moment from a laser scanner arranged above the cantilever belt of the stacker-reclaimer; calculating the instantaneous coal flow of the cross-sectional area of the empty belt, the belt speed at the current moment and the plurality of point cloud data at the current moment. The present invention accurately controls the feeding flow, improves the operation efficiency of the equipment. At the same time, when overloading occurs during feeding, the device is protected, achieving the effect of protecting the device, extending the service life of the equipment, reducing the maintenance and repair cost, and realizing non-contact suspension belt flow control and overload monitoring.

Description

Technical Field

[0001] The present invention mainly relates to the technical field of coal material control, and particularly relates to a coal material flow control method, device, system, and storage medium. Background Art

[0002] A stacker-reclaimer, also known as a bucket wheel stacker-reclaimer, a stacker, and a reclaimer, is a new type of high-efficiency continuous loading and unloading machine. It is divided into a circular stockyard blending stacker-reclaimer and a bucket wheel stacker-reclaimer according to different usage scenarios.

[0003] During the reclaiming operation of the reclaimer, it is necessary to control the reclaiming flow rate so that the control equipment reclaims materials stably according to the set flow rate, thereby improving the operation efficiency of the equipment, ensuring no overloading during reclaiming, extending the service life of the equipment, and reducing the maintenance and repair costs. In the production processes such as fuel preparation for thermal power generation and raw material preparation for iron and steel metallurgy, it is necessary to mix multiple raw materials according to different ratios. The higher the control accuracy of the mixing operation, the more obvious the economic benefits. How to accurately control the reclaiming flow rate and control the device when the reclaiming is overloaded to achieve the role of protecting the device is a problem that needs to be considered and an urgent problem to be solved. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a coal material flow control method, device, system, and storage medium in view of the deficiencies of the prior art.

[0005] The technical solution of the present invention for solving the above technical problem is as follows: A coal material flow control method includes the following steps:

[0006] Import the cross-sectional area of the empty belt of the belt scale on the stacker-reclaimer and the belt speed at the current moment, and obtain multiple point cloud data at the current moment from a laser scanner arranged above the cantilever belt of the stacker-reclaimer;

[0007] Calculate the instantaneous coal flow of the cross-sectional area of the empty belt and the belt speed at the current moment and the multiple point cloud data at the current moment;

[0008] Verify whether the instantaneous coal flow at the current moment is greater than or equal to a predetermined threshold. If the verification is successful, generate a belt scale protection instruction, and control the belt scale according to the belt scale protection instruction.

[0009] Another technical solution of the present invention for solving the above technical problem is as follows: A coal material flow control device includes:

[0010] A data acquisition module for importing the cross-sectional area of the empty belt of the belt scale on the stacker-reclaimer and the belt speed at the current moment, and obtaining multiple point cloud data at the current moment from a laser scanner arranged above the cantilever belt of the stacker-reclaimer;

[0011] A calculation module for calculating the cross-sectional area of the empty belt, the belt speed at the current moment, and the instantaneous coal flow of multiple point cloud data at the current moment.

[0012] A control module for verifying whether the instantaneous coal flow at the current moment is greater than or equal to a predetermined threshold. If the verification is successful, a belt scale protection instruction is generated, and the belt scale is controlled according to the belt scale protection instruction.

[0013] Based on the above coal material flow control method, the present invention also provides a coal material flow control system.

[0014] Another technical solution for the present invention to solve the above technical problems is as follows: A coal material flow control system includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the coal material flow control method as described above is implemented.

[0015] Based on the above coal material flow control method, the present invention also provides a computer-readable storage medium.

[0016] Another technical solution for the present invention to solve the above technical problems is as follows: A computer-readable storage medium stores a computer program. When the computer program is executed by a processor, the coal material flow control method as described above is implemented.

[0017] The beneficial effects of the present invention are as follows: By importing the cross-sectional area of the empty belt on the belt scale of the stacker-reclaimer and the belt speed at the current moment, and obtaining multiple point cloud data at the current moment from a laser scanner arranged above the cantilever belt of the stacker-reclaimer, calculating the cross-sectional area of the empty belt, the belt speed at the current moment, and the instantaneous coal flow of multiple point cloud data at the current moment to obtain the instantaneous coal flow at the current moment, verifying whether the instantaneous coal flow at the current moment is greater than or equal to a predetermined threshold. If the verification is successful, a belt scale protection instruction is generated, and the belt scale is controlled according to the belt scale protection instruction, accurately controlling the feeding flow rate, improving the operation efficiency of the equipment. At the same time, when overloading during feeding, the device is protected, achieving the effect of protecting the device, extending the service life of the equipment, reducing the maintenance and repair cost, and realizing non-contact suspension belt flow control and overload monitoring. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic flowchart of a coal material flow control method provided by an embodiment of the present invention.

[0019] Figure 2 It is a block diagram of a module of a coal material flow control device provided by an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The principles and features of the present invention will be described below in conjunction with the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0021] Figure 1 It is a schematic flow chart of a coal material flow control method provided by an embodiment of the present invention.

[0022] As Figure 1 shown, a coal material flow control method includes the following steps:

[0023] Import the cross-sectional area of the empty belt of the belt scale on the stacker-reclaimer and the belt speed at the current moment, and obtain multiple point cloud data at the current moment from the laser scanner arranged above the cantilever belt of the stacker-reclaimer;

[0024] Calculate the instantaneous coal flow of the cross-sectional area of the empty belt, the belt speed at the current moment, and the multiple point cloud data at the current moment;

[0025] Verify whether the instantaneous coal flow at the current moment is greater than or equal to a predetermined threshold. If the verification is successful, generate a belt scale protection instruction and control the belt scale according to the belt scale protection instruction.

[0026] It should be understood that by performing cross-sectional scanning above the cantilever belt through the laser scanner, the obtained two-dimensional point cloud data of the interface between the belt and the coal material (i.e., the point cloud data) is used to realize real-time detection of the instantaneous coal flow.

[0027] In the above embodiment, by importing the cross-sectional area of the empty belt of the belt scale on the stacker-reclaimer and the belt speed at the current moment, and obtaining multiple point cloud data at the current moment from the laser scanner arranged above the cantilever belt of the stacker-reclaimer, calculating the instantaneous coal flow of the cross-sectional area of the empty belt, the belt speed at the current moment, and the multiple point cloud data at the current moment to obtain the instantaneous coal flow at the current moment, verifying whether the instantaneous coal flow at the current moment is greater than or equal to a predetermined threshold. If the verification is successful, generate a belt scale protection instruction and control the belt scale according to the belt scale protection instruction, accurately control the feeding flow, improve the operation efficiency of the equipment. At the same time, when overloading occurs during feeding, the device is protected, achieving the effect of protecting the device, extending the service life of the equipment, reducing the maintenance and repair cost, and realizing non-contact suspension belt flow control and overload monitoring.

[0028] Optionally, as an embodiment of the present invention, the process of calculating the instantaneous coal flow of the cross-sectional area of the empty belt, the belt speed at the current moment, and the multiple point cloud data at the current moment includes:

[0029] Calculate the cross-sectional area of the empty belt, the belt speed at the current moment, and the instantaneous coal flow of multiple point cloud data at the current moment through the first formula to obtain the instantaneous coal flow at the current moment. The first formula is:

[0030]

[0031] where V is the instantaneous coal flow at the current moment, N is the total number of point cloud data, v is the belt speed at the current moment, S is the cross-sectional area of the empty belt, and S n is the nth point cloud data.

[0032] Specifically, assume that the scanner operating frequency is 15HZ (that is, there are 15 pieces of the point cloud data in 1 second, and each piece of the point cloud data represents the area formed by the two-dimensional point cloud data of the belt and the coal material cross-section at a certain moment and the coordinate system origin, Si, i = 1, 2, 3... 15), the belt speed (that is, the belt speed at the current moment) is v m / s, the area formed by the two-dimensional point cloud data of the empty belt scanner and the coordinate system origin is S (that is, the cross-sectional area of the empty belt), and the calculation formula for the instantaneous flow volume (that is, the instantaneous coal flow at the current moment) is as follows:

[0033] V = 1 / 15 * v * [(S - S1) + (S - S2) +... + (S - S15)].

[0034] In the above embodiment, the cross-sectional area of the empty belt, the belt speed at the current moment, and the instantaneous coal flow of multiple point cloud data at the current moment are calculated through the first formula to obtain the instantaneous coal flow at the current moment, providing data support for subsequent processing, accurately controlling the feeding flow, and improving the operation efficiency of the equipment.

[0035] Optionally, as an embodiment of the present invention, the predetermined threshold includes the rated value of the stacker-reclaimer and the alarm value of the stacker-reclaimer, and the rated value of the stacker-reclaimer is less than the alarm value of the stacker-reclaimer.

[0036] The process of verifying whether the instantaneous coal flow at the current moment is greater than or equal to the predetermined threshold, and if the verification is successful, generating a belt scale protection instruction and controlling the belt scale according to the belt scale protection instruction includes:

[0037] Verify whether the instantaneous coal flow at the current moment is greater than or equal to the rated value of the stacker-reclaimer. If the verification is successful, generate an alarm instruction, give an alarm according to the alarm instruction, and perform speed control on the belt scale through the PID control system;

[0038] Verify whether the instantaneous coal flow at the current moment is greater than or equal to the alarm value of the stacker-reclaimer. If the verification is successful, generate a tripping instruction, and control the belt scale to perform a chain tripping process according to the tripping instruction;

[0039] The belt scale protection instruction includes the alarm instruction and the tripping instruction.

[0040] It should be understood that the PID control system refers to a control system in industrial process control that performs control according to the proportion, integral, and differential of the error generated by comparing the information collected from the real-time data of the controlled object with the given value, abbreviated as the PID (Proportional Integral Derivative) control system. PID control has the advantages of simple principle, strong robustness, and wide application range. It is a control system with mature technology and the most extensive application.

[0041] Specifically, a first-level overload alarm and a second-level overload interlock tripping function for the instantaneous coal flow volume are set. When the instantaneous coal flow volume (i.e., the instantaneous coal flow volume at the current moment) reaches the rated value of the stacker-reclaimer, the system automatically alarms. At the same time, the feeding flow is automatically adjusted through PID control technology (i.e., the PID control system) to ensure the normal operation of the equipment. When it exceeds a certain range of the rated value (i.e., the alarm value of the stacker-reclaimer), the system realizes interlock tripping.

[0042] In the above embodiment, it is verified whether the instantaneous coal flow volume at the current moment is greater than or equal to the rated value of the stacker-reclaimer. If the verification is successful, an alarm instruction is generated, and an alarm is made according to the alarm instruction. The speed of the belt scale is controlled through the PID control system. It is verified whether the instantaneous coal flow volume at the current moment is greater than or equal to the alarm value of the stacker-reclaimer. If the verification is successful, a tripping instruction is generated, and the belt scale is controlled to perform interlock tripping according to the tripping instruction. When the feeding is overloaded, the device is protected, achieving the effect of protecting the device, extending the service life of the equipment, reducing the maintenance and repair cost, and realizing non-contact suspension belt flow control and overload monitoring.

[0043] Optionally, as an embodiment of the present invention, after the process of calculating the cross-sectional area of the empty belt, the belt speed at the current moment, and the instantaneous coal flow volume of multiple point cloud data at the current moment, it further includes:

[0044] Obtain the feeding amount at the previous moment, and add the feeding amount at the previous moment to the instantaneous coal flow volume at the current moment to obtain the feeding amount at the current moment;

[0045] Calculate the average value of the feeding amount at the current moment to obtain the average feeding amount;

[0046] Determine whether the average material taking amount is greater than the preset material taking amount. If so, generate a belt speed reduction instruction and control the belt scale to reduce speed according to the belt speed reduction instruction; if not, verify whether the average material taking amount is less than the preset material taking amount. If the verification is successful, generate a belt speed increase instruction and control the belt scale to increase speed according to the belt speed increase instruction.

[0047] It should be understood that the material taking amount (i.e., the material taking amount at the current moment) is equal to the accumulation of the instantaneous coal flow amounts at each moment (the instantaneous amount can be regarded as the flow value in 1 second).

[0048] It should be understood that the full-automatic constant flow material taking is realized by calculating the material taking amount through the cross-section.

[0049] Specifically, if the average material taking amount is equal to the preset material taking amount, control the belt scale to maintain the current belt speed.

[0050] In the above embodiment, the material taking amount at the current moment is obtained by adding the material taking amount at the previous moment and the instantaneous coal flow amount at the current moment, the average material taking amount is calculated by calculating the average value of the material taking amounts at the current moment, and it is determined whether the average material taking amount is greater than the preset material taking amount. If so, a belt speed reduction instruction is generated and the belt scale is controlled to reduce speed according to the belt speed reduction instruction. If not, it is verified whether the average material taking amount is less than the preset material taking amount. If the verification is successful, a belt speed increase instruction is generated and the belt scale is controlled to increase speed according to the belt speed increase instruction, realizing full-automatic constant flow material taking, improving the operation efficiency of the equipment, and further improving the control accuracy and economic benefits of the batching operation.

[0051] Optionally, as an embodiment of the present invention, the process of calculating the average value of the material taking amounts at the current moment to obtain the average material taking amount includes:

[0052] Obtain the initial moment, and calculate the average value of the material taking amounts at the initial moment and the current moment through the second formula to obtain the average material taking amount. The second formula is:

[0053]

[0054] where is the average material taking amount at the t-th moment, M t is the material taking amount at the t-th moment, t is the current moment, and t0 is the initial moment.

[0055] In the above embodiment, the average value of the material taking amounts at the initial moment and the current moment is calculated through the second formula to obtain the average material taking amount, realizing full-automatic constant flow material taking, improving the operation efficiency of the equipment, and further improving the control accuracy and economic benefits of the batching operation.

[0056] Optionally, as another embodiment of the present invention, the present invention implements a non-contact suspension belt flow monitoring system for constant flow material taking and overload monitoring. By using a laser scanner to perform cross-section scanning above the cantilever belt, the instantaneous amount of coal flow is detected in real time. The material taking amount is calculated through the cross-section to achieve fully automatic constant flow material taking. At the same time, a first-level overload alarm and a second-level overload interlock tripping function for the instantaneous amount of coal flow are set. When the instantaneous amount of coal flow reaches the rated value of the stacker-reclaimer, the system automatically alarms. At the same time, the material taking flow is automatically adjusted through PID control technology to ensure the normal operation of the equipment. When it exceeds the rated value by a certain range, the system implements interlock tripping.

[0057] Figure 2 It is a module block diagram of a coal material flow control device provided by an embodiment of the present invention.

[0058] Optionally, as another embodiment of the present invention, as Figure 2 shown, a coal material flow control device includes:

[0059] A data acquisition module for importing the cross-sectional area of the empty belt of the belt scale on the stacker-reclaimer and the belt speed at the current moment, and obtaining a plurality of point cloud data at the current moment from a laser scanner arranged above the cantilever belt of the stacker-reclaimer;

[0060] A calculation module for calculating the instantaneous coal flow amount of the cross-sectional area of the empty belt, the belt speed at the current moment, and the plurality of point cloud data at the current moment;

[0061] A control module for verifying whether the instantaneous coal flow amount at the current moment is greater than or equal to a predetermined threshold. If the verification is successful, a belt scale protection instruction is generated, and the belt scale is controlled according to the belt scale protection instruction.

[0062] Optionally, as an embodiment of the present invention, the calculation module is specifically used for:

[0063] Calculating the instantaneous coal flow amount of the cross-sectional area of the empty belt, the belt speed at the current moment, and the plurality of point cloud data at the current moment through a first formula to obtain the instantaneous coal flow amount at the current moment. The first formula is:

[0064]

[0065] where V is the instantaneous coal flow amount at the current moment, N is the total number of point cloud data, v is the belt speed at the current moment, S is the cross-sectional area of the empty belt, and S n is the nth point cloud data.

[0066] Optionally, as an embodiment of the present invention, the predetermined threshold includes the rated value of the stacker-reclaimer and the warning value of the stacker-reclaimer, and the rated value of the stacker-reclaimer is less than the warning value of the stacker-reclaimer.

[0067] The control module is specifically configured to:

[0068] Verify whether the instantaneous coal flow at the current moment is greater than or equal to the rated value of the stacker-reclaimer. If the verification is successful, generate an alarm instruction, give an alarm according to the alarm instruction, and perform speed control on the belt scale through the PID control system;

[0069] Verify whether the instantaneous coal flow at the current moment is greater than or equal to the warning value of the stacker-reclaimer. If the verification is successful, generate a tripping instruction, and control the belt scale to perform interlocking tripping according to the tripping instruction;

[0070] The belt scale protection instructions include the alarm instruction and the tripping instruction.

[0071] Optionally, another embodiment of the present invention provides a coal material flow control system, 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, the coal material flow control method described above is implemented. The system can be a computer or other systems.

[0072] Optionally, another embodiment of the present invention provides a computer-readable storage medium storing a computer program, and when the computer program is executed by a processor, the coal material flow control method described above is implemented.

[0073] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover a non-exclusive inclusion, so that a process, method, article or stacker-reclaimer including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or stacker-reclaimer.

[0074] Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working processes of the above-described devices and units can refer to the corresponding processes in the foregoing method embodiments, and will not be described herein again.

[0075] In several embodiments provided by the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed.

[0076] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiments of the present invention.

[0077] In addition, the functional units in various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.

[0078] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for causing a computer stacker-reclaimer (which can be a personal computer, a server, or a network stacker-reclaimer, etc.) to execute all or part of the steps of the methods in various embodiments of the present invention. The foregoing storage medium includes: various media such as USB flash drives, mobile hard disks, read-only memories (ROM, Read-Only Memory), random access memories (RAM, Random Access Memory), magnetic disks, or optical discs that can store program codes.

[0079] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for controlling the flow rate of coal material, characterized in that, It includes the following steps: Import the cross-sectional area of the empty belt of the belt scale on the stacker-reclaimer and the belt speed at the current moment, and obtain multiple point cloud data at the current moment from the laser scanner arranged above the cantilever belt of the stacker-reclaimer; Calculate the instantaneous coal flow of the cross-sectional area of the empty belt, the belt speed at the current moment and the multiple point cloud data at the current moment; Verify whether the instantaneous coal flow at the current moment is greater than or equal to a predetermined threshold. If the verification is successful, generate a belt scale protection instruction and control the belt scale according to the belt scale protection instruction; The process of calculating the instantaneous coal flow of the cross-sectional area of the empty belt, the belt speed at the current moment and the multiple point cloud data at the current moment includes: Calculate the instantaneous coal flow of the cross-sectional area of the empty belt, the belt speed at the current moment and the multiple point cloud data at the current moment through the first formula to obtain the instantaneous coal flow at the current moment. The first formula is: Among them, V is the instantaneous coal flow at the current moment, N is the total number of point cloud data, v is the belt speed at the current moment, S is the cross-sectional area of the empty belt, and S n is the nth point cloud data.

2. The coal material flow control method according to claim 1, characterized in that, The predetermined threshold includes the rated value of the stacker-reclaimer and the warning value of the stacker-reclaimer, and the rated value of the stacker-reclaimer is less than the warning value of the stacker-reclaimer. The process of verifying whether the instantaneous coal flow at the current moment is greater than or equal to a predetermined threshold. If the verification is successful, generate a belt scale protection instruction and control the belt scale according to the belt scale protection instruction includes: Verify whether the instantaneous coal flow at the current moment is greater than or equal to the rated value of the stacker-reclaimer. If the verification is successful, generate an alarm instruction, give an alarm according to the alarm instruction, and control the speed of the belt scale through a PID control system; Verify whether the instantaneous coal flow at the current moment is greater than or equal to the warning value of the stacker-reclaimer. If the verification is successful, generate a tripping instruction and control the belt scale to perform a chain tripping process according to the tripping instruction; The belt scale protection instruction includes the alarm instruction and the tripping instruction.

3. The coal material flow control method according to claim 1, characterized in that After the process of calculating the instantaneous coal flow of the cross-sectional area of the empty belt, the belt speed at the current moment and the multiple point cloud data at the current moment, it further includes: Obtain the material taking amount at the previous moment, and sum the material taking amount at the previous moment and the instantaneous coal flow at the current moment to obtain the material taking amount at the current moment; Calculate the average value of the material taking amount at the current moment to obtain the average material taking amount; Judge whether the average material taking amount is greater than a preset material taking amount. If so, generate a belt speed reduction instruction and control the belt scale to perform a speed reduction process according to the belt speed reduction instruction; if not, verify whether the average material taking amount is less than the preset material taking amount. If the verification is successful, generate a belt speed increase instruction and control the belt scale to perform a speed increase process according to the belt speed increase instruction.

4. The coal material flow control method according to claim 3, characterized in that The process of calculating the average value of the material taking amount at the current moment to obtain the average material taking amount includes: Obtain the initial moment, and calculate the average value of the material taking amount at the initial moment and the current moment through the second formula to obtain the average material taking amount. The second formula is: Among them, is the average material taking amount at the t-th moment, M t is the material taking amount at the t-th moment, t is the current moment, and t0 is the initial moment.

5. A coal material flow control device, characterized in that, It includes: A data acquisition module, which is used to import the cross-sectional area of the empty belt of the belt scale on the stacker-reclaimer and the belt speed at the current moment, and obtain multiple point cloud data at the current moment from the laser scanner arranged above the cantilever belt of the stacker-reclaimer; A calculation module for calculating the cross-sectional area of the empty belt, the belt speed at the current moment, and the instantaneous coal flow of multiple point cloud data at the current moment; A control module for verifying whether the instantaneous coal flow at the current moment is greater than or equal to a predetermined threshold. If the verification is successful, a belt scale protection instruction is generated, and the belt scale is controlled according to the belt scale protection instruction; Specifically, the calculation module is used for: Calculating the cross-sectional area of the empty belt, the belt speed at the current moment, and the instantaneous coal flow of multiple point cloud data at the current moment through the first formula to obtain the instantaneous coal flow at the current moment. The first formula is: Among them, V is the instantaneous coal flow at the current moment, N is the total number of point cloud data, v is the belt speed at the current moment, S is the cross-sectional area of the empty belt, and S n is the nth point cloud data.

6. The coal material flow control device according to claim 5, wherein The predetermined threshold includes the rated value of the stacker-reclaimer and the alarm value of the stacker-reclaimer, and the rated value of the stacker-reclaimer is less than the alarm value of the stacker-reclaimer; Specifically, the control module is used for: Verifying whether the instantaneous coal flow at the current moment is greater than or equal to the rated value of the stacker-reclaimer. If the verification is successful, an alarm instruction is generated, an alarm is made according to the alarm instruction, and the speed of the belt scale is controlled through a PID control system; Verifying whether the instantaneous coal flow at the current moment is greater than or equal to the alarm value of the stacker-reclaimer. If the verification is successful, a tripping instruction is generated, and the belt scale is controlled to perform a chain tripping process according to the tripping instruction; The belt scale protection instruction includes the alarm instruction and the tripping instruction.

7. A coal material flow control system, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, the coal material flow control method described in any one of claims 1 to 4 is implemented.

8. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by the processor, the coal material flow control method described in any one of claims 1 to 4 is implemented.

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