Intelligent control system of screw conveyor based on variable frequency speed regulation technology

Abstract

The present invention discloses an intelligent control system for a screw conveyor based on variable frequency speed regulation technology, comprising a data information acquisition module, a conveying analysis and calculation module, and an intelligent control module. The data information acquisition module is suitable for collecting relevant data during the process of the screw conveyor conveying materials to a loading vehicle. The conveying analysis and calculation module is used to analyze the loading position and loading port of the loading vehicle and calculate the optimal material conveying flow rate and flow. The intelligent control module is used to intelligently control the screw conveyor according to the loading vehicle information and the analysis and judgment results of the conveying analysis and calculation module. The data information acquisition module is electrically connected to the conveying analysis and calculation module, and the conveying analysis and calculation module is electrically connected to the intelligent control module. The present invention has the characteristics of strong adaptability and high efficiency and precision.

Description

Technical Field

[0001] The present invention relates to the technical field of industrial automation control, in particular to an intelligent control system for a screw conveyor based on variable frequency speed regulation technology. Background Art

[0002] In traditional screw conveyor material conveying processes, the conveyor's operation is usually controlled by manual operation or a simple automatic control system. However, this method has many shortcomings. First, manual operation cannot guarantee the accuracy and stability of material conveying, especially when conveying materials to loading vehicles. Due to the different heights and sizes of the loading ports of different loading vehicles, it is difficult to achieve precise control of the material conveying flow rate and flow through manual operation. Secondly, simple automatic control systems can usually only operate according to preset parameters and cannot be intelligently adjusted according to the real-time position of the loading vehicle and the size and height of the loading port. This leads to low material conveying efficiency and may even cause material overflow or insufficient loading.

[0003] With the continuous development of variable frequency speed regulation technology, its application in screw conveyor control is gradually increasing. However, existing screw conveyor control systems based on variable frequency speed regulation are mostly limited to simple speed regulation and lack the ability to intelligently control the system based on the real-time position of the loader and the size of the loading port. Therefore, it is particularly important to design a screw conveyor control system that can intelligently control the system based on loader information and material characteristics. Summary of the Invention

[0004] The purpose of the present invention is to provide an intelligent control system for a screw conveyor based on variable frequency speed regulation technology to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: an intelligent control system for a screw conveyor based on variable frequency speed regulation technology, including a data information acquisition module, a conveying analysis and calculation module and an intelligent control module. The data information acquisition module is suitable for collecting relevant data during the process of the screw conveyor conveying materials to the loading vehicle. The conveying analysis and calculation module is used to analyze the loading position and loading port of the loading vehicle and calculate the optimal material conveying flow rate and flow. The intelligent control module is used to intelligently control the screw conveyor according to the loading vehicle information and the analysis and judgment results of the conveying analysis and calculation module. The data information acquisition module is electrically connected to the conveying analysis and calculation module, and the conveying analysis and calculation module is electrically connected to the intelligent control module.

[0006] According to the above technical solution, the data information acquisition module includes a loading vehicle data scanning module, a position calibration module and a material information acquisition module. The loading vehicle data scanning module is used to perform image and position scanning on the loading vehicle to collect the image and position data of the loading vehicle. The position calibration module is electrically connected to the loading vehicle data scanning module. The position calibration module is used to calibrate the position of the loading vehicle according to the image and position data scanned and collected by the loading vehicle data scanning module. The material information acquisition module is used to collect material information transported by the screw conveyor.

[0007] According to the above technical solution, the conveying analysis and calculation module includes a data receiving module, a flow rate analysis module and a flow rate analysis module. The data receiving module is used to receive data information during the process of the screw conveyor conveying materials to the loading vehicle. The flow rate analysis module is used to analyze the target position of the material feeding to the loading vehicle and the position of the screw conveyor discharge port and calculate the optimal flow rate of the material in the conveying cylinder of the screw conveyor. The flow rate analysis module is used to analyze the size of the loading port of the loading vehicle and calculate the optimal flow rate of the material in the conveying cylinder of the screw conveyor.

[0008] According to the above technical solution, the intelligent control module includes a conveying speed control module and an input quantity control module. The conveying speed control module is used to control the rotation speed of the screw shaft of the screw conveyor according to the optimal material conveying flow rate analyzed and calculated, and the input quantity control module is used to control the material input quantity at the feed end of the screw conveyor according to the optimal material conveying flow rate analyzed and calculated.

[0009] According to the above technical solution, the flow rate analysis module further includes a coordinate system establishment submodule and a speed calculation submodule. The coordinate system establishment submodule is used to establish a coordinate system according to the calibrated loading vehicle position and analyze the functional relationship corresponding to the parabolic trajectory of the material after it is sent out from the screw conveyor in the coordinate system. The speed calculation submodule is used to calculate the initial velocity of the material sent out from the screw conveyor according to the functional relationship of the parabola in the coordinate system.

[0010] The flow analysis module further includes an area division submodule and a parabola fitting submodule. The area division submodule is used to divide the loading port area of ​​the loading vehicle into a nine-square grid form, and the parabola fitting submodule is used to fit the parabolic trajectory of the material from the discharge end to the material falling into the loading port.

[0011] According to the above technical solution, the operation method of the screw conveyor intelligent control system includes:

[0012] Step S1: The loader is parked in the loading area on one side of the screw conveyor, and the loader data scanning module on the side of the screw conveyor close to the loader is started to scan the image and position information of the currently parked loader;

[0013] Step S2: calibrating the spatial position of the loading vehicle based on the scanned image and position information of the loading vehicle;

[0014] Step S3: collecting material information conveyed by the screw conveyor through the material information collection module;

[0015] Step S4: The data receiving module obtains the relevant information collected in steps S1-S3 and uploads it to the transport analysis and calculation module;

[0016] Step S5: The conveying analysis and calculation module analyzes and calculates the optimal flow rate and optimal flow rate of the material in the conveying cylinder of the screw conveyor based on the acquired data information, and transmits the real-time analysis and calculation results to the intelligent control module via electrical signals;

[0017] Step S6: Finally, the intelligent control module is used to intelligently control the rotation speed of the screw shaft of the screw conveyor and the material input amount at the feed end.

[0018] According to the above technical solution, in step S5, the method in which the conveying analysis and calculation module analyzes and calculates the optimal flow rate of the material in the conveying cylinder of the screw conveyor based on the acquired data information specifically includes:

[0019] Step S51: obtain the calibration data for the spatial position of the loading vehicle, lock the center position point G of the plane where the loading port of the loading vehicle is located, take the discharge port of the screw conveyor as the origin O, the straight line passing through the origin O and perpendicular to the ground as the Y axis, determine the plane A with the Y axis and the point G outside the Y axis, and on the plane A, take the straight line passing through the origin O and perpendicular to the Y axis as the X axis, establish a plane rectangular coordinate system with point O as the origin of the coordinate system, the X axis as the horizontal axis, and the Y axis as the vertical axis. Then the coordinates of point O are (0,0), the coordinates of point G are (x G ,y G );

[0020] Step S52: After determining the specific category of the material based on the collected material information, a preset coefficient k of the current material category is matched in the large database;

[0021] Step S53: Substitute k into the parabolic trajectory function relationship y=-ax of the material delivered by the screw conveyor 2 Among them And a>0, then the parabolic trajectory function expression of the current material after being sent out from the screw conveyor is Where v is the flow rate of the material in the conveying cylinder of the screw conveyor;

[0022] Step S54: Since the parabola trajectory passes through point G(x G ,y G ), then the optimal flow rate v0 satisfies Right now The output v0 of the flow rate analysis module is the optimal flow rate of the material in the conveying cylinder of the screw conveyor, so that the material can be delivered from the discharge port in a The parabolic trajectory is sent, where k is a constant greater than 0 and v0>0.

[0023] According to the above technical solution, in step S5, the method in which the conveying analysis and calculation module analyzes and calculates the optimal flow rate of the material in the conveying cylinder of the screw conveyor based on the acquired data information specifically includes:

[0024] Step S5a: obtaining calibration data for the spatial position of the loading vehicle, locking the plane of the loading port area of ​​the loading vehicle and the size of the plane of the area;

[0025] Step S5b: Divide the loading port area plane into nine small areas in a "nine-square grid" format using the area division submodule, and obtain the side length c and side width d of the small area, where c≥d;

[0026] Step S5c: Fitting the material from the discharge port point O(0,0) to the center position point G(x G ,y G ) of the material parabolic trajectory and generate a fitting curve S;

[0027] Step S5d: For the function Taking the derivative we get By formula Calculate the length of the fitting curve S, and then use the formula Calculate the cross-sectional diameter of the material in the screw conveyor cylinder, where L S is the length of the curve fitted by the parabolic trajectory of the material, d is the side width of a grid after the loading port area plane is divided into nine grids, σ is the diffusion coefficient of the current material category with the delivery distance, and P0 is the cross-sectional diameter of the material in the conveying cylinder of the screw conveyor.

[0028] According to the above technical solution, in step S5, the method in which the conveying analysis and calculation module analyzes and calculates the optimal flow rate of the material in the conveying cylinder of the screw conveyor based on the acquired data information specifically further includes:

[0029] Step S5e: Compare the diameter P of the screw conveyor cylinder b , through the formula Calculate the optimal flow rate of the material in the conveying cylinder of the screw conveyor, and the flow analysis module outputs the analysis and calculation results of Q0.

[0030] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: the present invention, by providing a data information acquisition module, a conveying analysis and calculation module and an intelligent control module, can collect information of the loading vehicle and materials in real time and analyze and calculate the optimal material conveying flow rate and flow, thereby realizing intelligent control of the screw conveyor; the initial velocity obtained when the material leaves the screw conveyor will also change relatively, forming different delivery trajectories, and the delivery trajectory is calculated so that the material can accurately fall on the target point when it is delivered from the discharge port, thereby achieving the purpose of controlling and adjusting the height and position of the discharge end, being easy to use and enhancing the general performance, while retaining the delivery deviation redundancy, and delivering to the target loading vehicle with the maximum material conveying flow rate, achieving the effect of strong adaptability and high efficiency and precision. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0032] In the attached figure:

[0033] Figure 1 It is a schematic diagram of the system module composition of the present invention;

[0034] Figure 2 It is a schematic diagram of the material delivery principle of the present invention. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] See also Figure 1-2The present invention provides a technical solution: an intelligent control system for a screw conveyor based on variable frequency speed regulation technology, comprising a data information acquisition module, a conveying analysis and calculation module, and an intelligent control module. The data information acquisition module is suitable for collecting relevant data during the process of the screw conveyor conveying materials to the loading vehicle. The conveying analysis and calculation module is used to analyze the loading position and loading port of the loading vehicle and calculate the optimal material conveying flow rate and flow rate. The intelligent control module is used to intelligently control the screw conveyor according to the loading vehicle information and the analysis and judgment results of the conveying analysis and calculation module. The data information acquisition module is electrically connected to the conveying analysis and calculation module, and the conveying analysis and calculation module is electrically connected to the intelligent control module. ; By setting up a data information acquisition module, a conveying analysis and calculation module and an intelligent control module, the information of the loading vehicle and materials can be collected in real time, and the optimal material conveying flow rate and flow can be analyzed and calculated, so as to realize intelligent control of the screw conveyor; the initial velocity obtained when the material leaves the screw conveyor will also change relatively, forming different delivery trajectories, and the delivery trajectory is calculated so that the material can be accurately dropped to the target point when it is delivered from the discharge port, thereby achieving the purpose of controlling and adjusting the height and position of the discharge end. It is easy to use and enhances general performance, while retaining delivery deviation redundancy, and delivering to the target loading vehicle with the maximum material conveying flow rate, achieving strong adaptability and efficient and accurate effects.

[0037] The data information acquisition module includes a loading vehicle data scanning module, a position calibration module and a material information acquisition module. The loading vehicle data scanning module is used to perform image and position scanning on the loading vehicle to collect the image and position data of the loading vehicle. The position calibration module is electrically connected to the loading vehicle data scanning module. The position calibration module is used to calibrate the position of the loading vehicle according to the image and position data scanned and collected by the loading vehicle data scanning module. The material information acquisition module is used to collect material information transported by the screw conveyor.

[0038] The conveying analysis and calculation module includes a data receiving module, a flow rate analysis module and a flow rate analysis module. The data receiving module is used to receive data information during the process of the screw conveyor conveying materials to the loading vehicle. The flow rate analysis module is used to analyze the target position of the material feeding to the loading vehicle and the position of the screw conveyor discharge port and calculate the optimal flow rate of the material in the conveying cylinder of the screw conveyor. The flow rate analysis module is used to analyze the size of the loading port of the loading vehicle and calculate the optimal flow rate of the material in the conveying cylinder of the screw conveyor.

[0039] The intelligent control module includes a conveying speed control module and an input quantity control module. The conveying speed control module is used to control the rotation speed of the screw shaft of the screw conveyor according to the optimal material conveying flow rate analyzed and calculated. The input quantity control module is used to control the material input quantity at the feed end of the screw conveyor according to the optimal material conveying flow rate analyzed and calculated.

[0040] The flow rate analysis module further includes a coordinate system establishment submodule and a speed calculation submodule. The coordinate system establishment submodule is used to establish a coordinate system based on the calibrated loading vehicle position and analyze the functional relationship corresponding to the parabolic trajectory of the material after it is sent out from the screw conveyor on the coordinate system. The speed calculation submodule is used to calculate the initial velocity of the material sent out from the screw conveyor based on the functional relationship of the parabola on the coordinate system.

[0041] The flow analysis module further includes an area division submodule and a parabola fitting submodule. The area division submodule is used to divide the loading port area of ​​the loading vehicle into a nine-square grid form, and the parabola fitting submodule is used to fit the parabolic trajectory of the material from the discharge end to the material falling into the loading port.

[0042] The operation method of the intelligent control system of the screw conveyor includes:

[0043] Step S1: The loader is parked in the loading area on one side of the screw conveyor, and the loader data scanning module on the side of the screw conveyor close to the loader is started to scan the image and position information of the currently parked loader;

[0044] Step S2: calibrating the spatial position of the loading vehicle based on the scanned image and position information of the loading vehicle;

[0045] Step S3: collecting material information conveyed by the screw conveyor through the material information collection module;

[0046] Step S4: The data receiving module obtains the relevant information collected in steps S1-S3 and uploads it to the transport analysis and calculation module;

[0047] Step S5: The conveying analysis and calculation module analyzes and calculates the optimal flow rate and optimal flow rate of the material in the conveying cylinder of the screw conveyor based on the acquired data information, and transmits the real-time analysis and calculation results to the intelligent control module via electrical signals;

[0048] Step S6: Finally, the intelligent control module intelligently controls the screw conveyor's screw shaft rotation speed and the material input at the feed end. When the screw shaft's rotation speed increases, the propulsion force exerted by the spiral blades on the material also increases accordingly, thereby accelerating the material's conveying speed. Therefore, as the material is about to leave the screw conveyor, i.e., when it reaches the end of the screw shaft, the screw conveyor's rotation speed is controlled so that the material's initial velocity also changes relatively, forming different delivery trajectories. The delivery trajectory is calculated so that the material can be accurately delivered to the target point when it is delivered from the discharge port, thereby achieving the control and adjustment of the height and position of the discharge end, which is convenient to use and enhances universal performance.

[0049] In step S5, the method in which the conveying analysis and calculation module analyzes and calculates the optimal flow rate of the material in the conveying cylinder of the screw conveyor based on the acquired data information specifically includes:

[0050] Step S51: obtain the calibration data for the spatial position of the loading vehicle, lock the center position point G of the plane where the loading port of the loading vehicle is located, take the discharge port of the screw conveyor as the origin O, the straight line passing through the origin O and perpendicular to the ground as the Y axis, determine the plane A with the Y axis and the point G outside the Y axis, and on the plane A, take the straight line passing through the origin O and perpendicular to the Y axis as the X axis, establish a plane rectangular coordinate system with point O as the origin of the coordinate system, the X axis as the horizontal axis, and the Y axis as the vertical axis. Then the coordinates of point O are (0,0), the coordinates of point G are (x G ,y G );

[0051] Step S52: After determining the specific material category based on the collected material information, a preset coefficient k for the current material category is matched in the large database. The preset coefficient k is related to the material's physical properties such as particle size, density, and friction coefficient, and affects the initial velocity of the material when it is released;

[0052] Step S53: Substitute k into the parabolic trajectory function relationship y=-ax of the material delivered by the screw conveyor 2 Among them And a>0, then the parabolic trajectory function expression of the current material after being sent out from the screw conveyor is Where v is the flow rate of the material in the conveying cylinder of the screw conveyor; from the above functional relationship, it can be seen that the opening size of the parabola is related to the material flow rate. When the material type remains unchanged, that is, when k remains unchanged, the greater the flow rate v, the smaller a, and the larger the parabola opening, the farther the material is delivered. Conversely, the smaller the flow rate, the closer the material is delivered. At the same time, it is also related to the physical properties of different material types. If the material flow rate remains unchanged, but the physical property coefficient k of the material changes, the impact on the initial velocity of the material leaving the screw conveyor is different, resulting in different parabolic trajectories of the material when it is delivered from the discharge port.

[0053] Step S54: Since the parabola trajectory passes through point G(x G ,y G ), then the optimal flow rate v0 satisfies Right now The output v0 of the flow rate analysis module is the optimal flow rate of the material in the conveying cylinder of the screw conveyor, so that the material can be delivered from the discharge port in a The parabolic trajectory is sent, where k is a constant greater than 0 and v0>0.

[0054] In step S5, the method for the conveying analysis and calculation module to analyze and calculate the optimal flow rate of the material in the conveying cylinder of the screw conveyor based on the acquired data information specifically includes:

[0055] Step S5a: obtaining calibration data for the spatial position of the loading vehicle, locking the plane of the loading port area of ​​the loading vehicle and the size of the plane of the area;

[0056] Step S5b: Divide the loading port area plane into nine small areas in a "nine-square grid" format using the area division submodule, and obtain the side length c and side width d of the small area, where c≥d;

[0057] Step S5c: Fitting the material from the discharge port point O(0,0) to the center position point G(x G ,y G ) of the material parabolic trajectory and generate a fitting curve S;

[0058] Step S5d: For the function Taking the derivative we get By formula Calculate the length of the fitting curve S, and then use the formula Calculate the cross-sectional diameter of the material in the screw conveyor cylinder, where L S is the length of the curve fitted by the material parabolic trajectory, d is the side width of a grid after the loading port area plane is divided into nine grids, σ is the diffusion coefficient of the current material category with the delivery distance, and P0 is the cross-sectional diameter of the material in the conveying barrel of the screw conveyor. Through the above formula, based on the optimal material flow rate and its corresponding parabolic trajectory analyzed and calculated by the flow rate analysis module, the parabolic trajectory length of the material from the discharge port to the loading port can be calculated. The loading port area plane is further divided into "nine grids" in equal proportions to determine the width of the side length of each "grid". Finally, the cross-sectional diameter of the material in the conveying barrel is analyzed and calculated. When the material flow rate corresponding to the cross-sectional diameter is discharged from the discharge port, the material naturally deviates and diffuses along the trajectory length, and falls into the center position G of the loading port, the diameter formed by the material flow is equal to the width of the divided area. This can not only ensure that the material can be accurately delivered to the center position of the loading port of different types of loading vehicles, but also retain the delivery deviation redundancy, and deliver the material to the target loading vehicle at the maximum material conveying flow rate, achieving strong adaptability and efficient and accurate results.

[0059] In step S5, the method for the conveying analysis and calculation module to analyze and calculate the optimal flow rate of the material in the conveying cylinder of the screw conveyor based on the acquired data information specifically includes:

[0060] Step S5e: Compare the diameter P of the screw conveyor cylinder b, through the formula Calculate the optimal flow rate of the material in the conveying cylinder of the screw conveyor, and the flow analysis module outputs the analysis and calculation results of Q0.

[0061] It should be noted that, in this document, relational terms such as first and second, etc., are used only 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 terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0062] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An intelligent control system for a screw conveyor based on variable frequency speed regulation technology, comprising a data information acquisition module, a conveying analysis and calculation module, and an intelligent control module, characterized in that: The data information acquisition module is suitable for collecting relevant data during the process of the screw conveyor conveying materials to the loading vehicle. The conveying analysis and calculation module is used to analyze the loading position and loading port of the loading vehicle and calculate the optimal material conveying flow rate and flow rate. The intelligent control module is used to intelligently control the screw conveyor based on the loading vehicle information and the analysis and judgment results of the conveying analysis and calculation module. The data information acquisition module is electrically connected to the conveying analysis and calculation module, and the conveying analysis and calculation module is electrically connected to the intelligent control module. The conveying analysis and calculation module includes a data receiving module, a flow rate analysis module and a flow rate analysis module. The data receiving module is used to receive data information during the process of the screw conveyor conveying materials to the loading vehicle. The flow rate analysis module is used to analyze the target position of the material to the loading vehicle and the position of the screw conveyor discharge port and calculate the optimal flow rate of the material in the conveying cylinder of the screw conveyor. The flow rate analysis module is used to analyze the size of the loading port of the loading vehicle and calculate the optimal flow rate of the material in the conveying cylinder of the screw conveyor. The flow rate analysis module further includes a coordinate system establishment submodule and a speed calculation submodule. The coordinate system establishment submodule is used to establish a coordinate system according to the calibrated loading vehicle position and analyze the functional relationship corresponding to the parabola trajectory of the material after it is sent out from the screw conveyor on the coordinate system. The speed calculation submodule is used to calculate the initial velocity of the material sent out from the screw conveyor based on the functional relationship of the parabola on the coordinate system. The flow analysis module further includes an area division submodule and a parabola fitting submodule. The area division submodule is used to divide the loading port area of ​​the loading vehicle into a nine-square grid form, and the parabola fitting submodule is used to fit the parabolic trajectory of the material from the discharge end to the material falling into the loading port.

2. The intelligent control system for a screw conveyor based on variable frequency speed regulation technology according to claim 1 is characterized in that: The data information acquisition module includes a loading vehicle data scanning module, a position calibration module and a material information acquisition module. The loading vehicle data scanning module is used to perform image and position scanning on the loading vehicle to collect the image and position data of the loading vehicle. The position calibration module is electrically connected to the loading vehicle data scanning module. The position calibration module is used to calibrate the position of the loading vehicle according to the image and position data scanned and collected by the loading vehicle data scanning module. The material information acquisition module is used to collect material information transported by the screw conveyor.

3. The intelligent control system for a screw conveyor based on variable frequency speed regulation technology according to claim 1 is characterized in that: The intelligent control module includes a conveying speed control module and an input quantity control module. The conveying speed control module is used to control the rotation speed of the screw shaft of the screw conveyor according to the optimal material conveying flow rate analyzed and calculated, and the input quantity control module is used to control the material input quantity at the feed end of the screw conveyor according to the optimal material conveying flow rate analyzed and calculated.

4. The intelligent control system for a screw conveyor based on variable frequency speed regulation technology according to any one of claims 1 to 3 is characterized in that: The operating method of the screw conveyor intelligent control system includes: Step S1: The loader is parked in the loading area on one side of the screw conveyor, and the loader data scanning module on the side of the screw conveyor close to the loader is started to scan the image and position information of the currently parked loader; Step S2: calibrating the spatial position of the loading vehicle based on the scanned image and position information of the loading vehicle; Step S3: collecting material information conveyed by the screw conveyor through the material information collection module; Step S4: The data receiving module obtains the relevant information collected in steps S1-S3 and uploads it to the transport analysis and calculation module; Step S5: The conveying analysis and calculation module analyzes and calculates the optimal flow rate and optimal flow rate of the material in the conveying cylinder of the screw conveyor based on the acquired data information, and transmits the real-time analysis and calculation results to the intelligent control module via electrical signals; Step S6: Finally, the intelligent control module is used to intelligently control the rotation speed of the screw shaft of the screw conveyor and the material input amount at the feed end.

5. The intelligent control system for a screw conveyor based on variable frequency speed regulation technology according to claim 4 is characterized in that: In step S5, the method in which the conveying analysis and calculation module analyzes and calculates the optimal flow rate of the material in the conveying cylinder of the screw conveyor based on the acquired data information specifically includes: Step S51: obtain the calibration data for the spatial position of the loading vehicle, lock the center position point G of the plane where the loading port of the loading vehicle is located, take the discharge port of the screw conveyor as the origin O, the straight line passing through the origin O and perpendicular to the ground as the Y axis, and determine the plane A with the Y axis and the point G outside the Y axis. On the plane A, take the straight line passing through the origin O and perpendicular to the Y axis as the X axis, take point O as the origin of the coordinate system, the X axis as the horizontal axis, and the Y axis as the vertical axis to establish a plane rectangular coordinate system, then the coordinates of point O are (0,0), the coordinates of point G are ( , ); Step S52: After determining the specific category of the material based on the collected material information, a preset coefficient k of the current material category is matched in the large database; Step S53: Substitute k into the parabolic trajectory function relationship of the screw conveyor to deliver the material Among them and , then the parabolic trajectory function expression of the current material after being sent out from the screw conveyor is , where v is the flow rate of the material in the conveying cylinder of the screw conveyor; Step S54: Since the parabola trajectory passes through point G ( , ), the optimal flow rate satisfy ,Right now ,Flow rate analysis module output It is the optimal flow rate of the material in the screw conveyor barrel, so that the material can be delivered from the discharge port in a The parabolic trajectory is sent, where k is a constant greater than 0, and .

6. The intelligent control system for a screw conveyor based on variable frequency speed regulation technology according to claim 5 is characterized in that: In step S5, the method in which the conveying analysis and calculation module analyzes and calculates the optimal flow rate of the material in the conveying cylinder of the screw conveyor based on the acquired data information specifically includes: Step S5a: obtaining calibration data for the spatial position of the loading vehicle, locking the plane of the loading port area of ​​the loading vehicle and the size of the plane of the area; Step S5b: Using the area division submodule, the loading port area plane is divided into nine small areas in a "nine-square grid" format, and the side length c and side width d of the small area are obtained, where c ≥ d; Step S5c: Fitting the material from the discharge port point O(0,0) to the center position point G( , ) of the material parabolic trajectory and generate a fitting curve S; Step S5d: For the function Taking the derivative we get , through the formula Calculate the length of the fitting curve S, and then use the formula = Calculate the cross-sectional diameter of the material in the conveying cylinder of the screw conveyor, where is the length of the curve fitted by the material parabolic trajectory, is the side width of a grid after the loading port area is divided into nine grids. is the diffusion coefficient of the current material category with the delivery distance, It is the cross-sectional diameter value of the material in the conveying cylinder of the screw conveyor.

7. The intelligent control system for a screw conveyor based on variable frequency speed regulation technology according to claim 6 is characterized in that: In step S5, the method of analyzing and calculating the optimal flow rate of the material in the conveying cylinder of the screw conveyor based on the acquired data information by the conveying analysis and calculation module specifically includes: Step S5e: Compare the diameters of the screw conveyor cylinders , through the formula Calculate the optimal flow rate of the material in the screw conveyor cylinder, and the flow analysis module outputs The analytical calculation results.

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