Lifting belt speed control method and device, equipment, medium and product

Abstract

The invention discloses an elevator belt speed control method, device and equipment, a medium and a product. The method comprises the following steps: acquiring a current material conveying attribute of the belt weigher; under the condition that the current material conveying attribute is inconsistent with the preset standard conveying attribute, the to-be-used operation frequency is determined based on first historical operation data of a frequency converter of the elevator belt, the current material conveying attribute and the preset standard conveying attribute; and regulating the output frequency of a frequency converter of the elevator belt based on the to-be-used operation frequency so as to regulate the operation speed of the elevator belt. The speed control accuracy of the lifting belt is improved, the operation stability of the lifting belt is improved, meanwhile, the material conveying stability of the belt weigher is ensured, and the technical effect of improving the production efficiency is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of computer processing, and in particular, to a control method, device, equipment, medium and product for improving the belt speed. Background Art

[0002] In the silk reeling production process, such as in processes like loose conditioning, feeding, drying, blending and flavoring, etc., there are generally strict process requirements for the material flow rate of the electronic belt scale. The entire production needs to be carried out under a stable material flow rate to ensure the stability of product quality. To ensure the stability of the flow control of the electronic belt scale, a quantitative material conveying device has emerged. The quantitative material conveying device usually consists of a feeder, a lifting belt, a metering tube, and a photoelectric sensor, etc. The metering tube has multiple groups of photoelectric sensors such as high, medium, and low positions from top to bottom, which are used to feedback the height of the material in the metering tube. To keep the material level in the metering tube relatively stable and ensure smooth feeding of the belt scale, it is usually necessary to control the speed of the lifting belt.

[0003] Currently, the way to control the speed of the lifting belt is usually to adjust the speed of the lifting belt according to the occlusion signals of multiple groups of photoelectric sensors. When the high-position photoelectric sensor is occluded, the lifting belt stops running; when none of the three groups of photoelectric tubes at high, medium, and low positions are occluded, the lifting belt runs at high speed; when the high-position photoelectric tube is not occluded and the medium and low-position photoelectric tubes are continuously occluded for a preset duration, the lifting belt resumes normal speed operation. This control method usually results in a mismatch between the running speed of the lifting belt and the required flow rate of the belt scale, which will cause the speed of the lifting belt to continuously switch and start and stop frequently, reducing the service life of the lifting belt equipment and affecting the production efficiency. Summary of the Invention

[0004] The present invention provides a control method, device, equipment, medium and product for improving the belt speed, so as to achieve the technical effect of improving production efficiency while improving the accuracy of the lifting belt speed control and the smoothness of the lifting belt operation, and ensuring the stability of the material conveying of the belt scale.

[0005] According to one aspect of the present invention, a control method for improving the belt speed is provided. This method is applied to a material conveying device, and the material conveying device includes a feeder, a lifting belt, a metering tube, and a belt scale; the first discharge end of the feeder is connected to the first feeding end of the lifting belt, and the second discharge end of the lifting belt is connected to the second feeding end of the metering tube; the third discharge end of the metering tube is connected to the third feeding end of the belt scale. The method includes:

[0006] Obtain the current material conveying attribute of the belt scale;

[0007] In the case where the current material conveying attribute is inconsistent with the preset standard conveying attribute, based on the first historical operation data of the frequency converter of the lifting belt, the current material conveying attribute, and the preset standard conveying attribute, determine the operating frequency to be used;

[0008] Based on the operating frequency to be used, regulate the output frequency of the frequency converter of the lifting belt to adjust the running speed of the lifting belt.

[0009] According to another aspect of the present invention, there is provided a control device for the speed of a lifting belt. The device is configured in a material conveying device, and the material conveying device includes a feeder, a lifting belt, a metering pipe, and a belt scale; the first discharge end of the feeder is connected to the first feed end of the lifting belt, and the second discharge end of the lifting belt is connected to the second feed end of the metering pipe; the third discharge end of the metering pipe is connected to the third feed end of the belt scale. The device includes:

[0010] A material conveying attribute acquisition module for acquiring the current material conveying attribute of the belt scale;

[0011] An operating frequency to be used determination module for determining the operating frequency to be used based on the first historical operation data of the frequency converter of the lifting belt, the current material conveying attribute, and the preset standard conveying attribute in the case where the current material conveying attribute is inconsistent with the preset standard conveying attribute;

[0012] A frequency regulation module for regulating the output frequency of the frequency converter of the lifting belt based on the operating frequency to be used to adjust the running speed of the lifting belt.

[0013] According to another aspect of the present invention, there is provided an electronic device, and the electronic device includes:

[0014] At least one processor; and a memory communicatively connected to the at least one processor; wherein,

[0015] The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute the control method for the speed of the lifting belt according to any embodiment of the present invention.

[0016] According to another aspect of the present invention, there is provided a computer-readable storage medium, and the computer-readable storage medium stores computer instructions for causing a processor to execute the control method for the speed of the lifting belt according to any embodiment of the present invention when executed.

[0017] According to another aspect of the present invention, there is provided a computer program product including a computer program which, when executed by a processor, implements the control method for increasing the belt speed as described in any embodiment of the present invention.

[0018] The technical solution of the embodiment of the present invention obtains the current material conveying attribute of the belt scale; in the case where the current material conveying attribute is inconsistent with the preset standard conveying attribute, determines the operating frequency to be used based on the first historical operating data of the frequency converter of the lifting belt, the current material conveying attribute, and the preset standard conveying attribute; and regulates the output frequency of the frequency converter of the lifting belt based on the operating frequency to be used to adjust the operating speed of the lifting belt, thereby solving the problem in the prior art that the speed of the lifting belt is adjusted by the occlusion signals of multiple groups of photoelectric sensors, resulting in poor control stability of the lifting belt and affecting production efficiency. It realizes that in the case where the current material conveying attribute of the belt scale is inconsistent with the preset standard conveying attribute, the operating frequency to be used is determined based on the first historical operating data of the frequency converter of the lifting belt, the current material conveying attribute, and the preset standard conveying attribute, and then the output frequency of the frequency converter of the lifting belt is regulated based on the operating frequency to be used to adjust the operating speed of the lifting belt, achieving the technical effects of improving the accuracy of the lifting belt speed control, improving the smoothness of the lifting belt operation, ensuring the stability of the material conveying of the belt scale, and improving production efficiency.

[0019] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present invention, nor is it used to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention, and those of ordinary skill in the art can also obtain other drawings based on these drawings without creative efforts.

[0021] Figure 1 is a schematic structural diagram of the material conveying equipment provided according to the embodiment of the present invention;

[0022] Figure 2 is a flowchart of a control method for the speed of a lifting belt provided according to Embodiment 1 of the present invention;

[0023] Figure 3 is a flowchart of a control method for the speed of a lifting belt provided according to Embodiment 2 of the present invention;

[0024] Figure 4 is a flowchart of a control method for the speed of a lifting belt provided according to Embodiment 3 of the present invention;

[0025] Figure 5 It is a schematic structural diagram of a control device for increasing the belt speed according to Embodiment 4 of the present invention;

[0026] Figure 6 It is a schematic structural diagram of an electronic device for implementing the control method of the belt speed in the embodiment of the present invention. Detailed implementation manners

[0027] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0029] Before introducing the technical solution, an exemplary introduction to the application scenario can be given first. The technical solution provided by the embodiments of the present invention can be applied to any scenario where the speed of the lifting belt in a material conveying device needs to be controlled. Exemplarily, when the material conveying device conveys materials from a storage device (such as a silo, a funnel, etc.) to a receiving device or a processing device, or provides materials for other cigarette making process devices, it is necessary to control the speed of the lifting belt in the material conveying device. At this time, the technical solution provided by this embodiment can be implemented.

[0030] In order to enable those skilled in the art to clearly understand the technical solution of the embodiments of the present invention, a specific structural description of the material conveying device is given. The schematic structural diagram of the material conveying device can be referred to Figure 1。The material conveying equipment includes a feeder 1, a lifting belt 2, a metering pipe 3 and a belt scale 4; the first discharge end of the feeder 1 is connected to the first feeding end of the lifting belt 2, and the second discharge end of the lifting belt 2 is connected to the second feeding end of the metering pipe 3; the third discharge end of the metering pipe 3 is connected to the third feeding end of the belt scale 4. A stirring rod 5 is arranged at the first feeding end of the lifting belt 2 for dispersing the material from the bottom of the lifting belt and feeding it into the metering pipe. A lifting belt reducer 6 is arranged at the second discharge end of the lifting belt 2 for reducing the speed and increasing the torque to enable the lifting belt to perform the lifting action smoothly and safely. The metering pipe includes photoelectric sensors at different height positions, such as a high-position photoelectric sensor 7, a middle-position photoelectric sensor 8, and a low-position photoelectric sensor 9, for feeding back the height of the material in the metering pipe. A belt scale reducer 10 is arranged at the fourth discharge end of the belt scale 4 for controlling the driving and deceleration of the belt conveyor. In practical applications, the feeder, the lifting belt, the metering pipe and the belt scale work together to complete the cigarette making process. It should be noted that the structure of the above material conveying equipment is only an example, and the speed of the lifting belt in other material conveying equipment with any structure can also be controlled based on the technical solution provided in this embodiment.

[0031] Embodiment 1

[0032] Figure 2 is a flowchart of a method for controlling the speed of a lifting belt provided according to Embodiment 1 of the present invention. This embodiment is applicable to the situation of controlling the speed of the lifting belt when the material conveying equipment is working. This method can be executed by a control device for the speed of the lifting belt. The control device for the speed of the lifting belt can be implemented in the form of hardware and / or software. The control device for the speed of the lifting belt can be configured in the material conveying equipment. The material conveying equipment includes a feeder, a lifting belt, a metering pipe and a belt scale; the first discharge end of the feeder is connected to the first feeding end of the lifting belt, the second discharge end of the lifting belt is connected to the second feeding end of the metering pipe, and the third discharge end of the metering pipe is connected to the third feeding end of the belt scale. As Figure 2 shown, the method includes:

[0033] S110. Obtain the current material conveying attributes of the belt scale.

[0034] Among them, the current material conveying attributes can be information related to the material conveyed by the belt scale. For example, the current material conveying attributes include but are not limited to parameters such as the instantaneous flow rate, cumulative flow rate, flow rate average value, belt speed, material weight, and feeding capacity of the belt scale. The instantaneous flow rate refers to the weight of the material passing through the belt scale per unit time. The unit of the instantaneous flow rate can be kilograms per hour (kg / h). The cumulative flow rate refers to the total amount of material passing through the belt scale within a certain period of time.

[0035] In practical applications, the material weight and belt speed on the belt scale can be measured by a weighing sensor and a speed sensor, and the current instantaneous flow rate of the belt scale can be calculated. The current instantaneous flow rate of the belt scale is used as the current material conveying attribute of the belt scale.

[0036] S120. When the current material conveying attribute is inconsistent with the preset standard conveying attribute, based on the first historical operation data of the frequency converter of the lifting belt, the current material conveying attribute, and the preset standard conveying attribute, determine the operating frequency to be used.

[0037] Among them, the preset standard conveying attribute can be determined in advance based on the material production process requirements or equipment design standards. In actual tobacco production, the preset standard conveying attributes of the tobacco process for each brand of cigarette in each process are fixed. For example, the preset standard conveying attribute can be parameters such as the belt scale flow rate, the belt scale speed, and the material load. The frequency converter is used to change the frequency and voltage of the power supply, thereby controlling the rotation speed and operating state of the motor. The motor drives the rotation of the chain through the control of the frequency converter, thereby realizing the speed control of the lifting belt. The first historical operation data can be the output frequency of the frequency converter within the historical time, or the average value of multiple output frequencies.

[0038] In this embodiment, the current material conveying attribute can be compared with the preset standard conveying attribute. If the current material conveying attribute is inconsistent with the preset standard conveying attribute, it means that the speed of the lifting belt needs to be adjusted. At this time, the first historical operation data of the frequency converter of the lifting belt can be processed in combination with the current material conveying attribute and the preset standard conveying attribute to obtain the operating frequency to be used.

[0039] In this embodiment, determining the operating frequency to be used based on the first historical operation data of the frequency converter of the lifting belt, the current material conveying attribute, and the preset standard conveying attribute includes: determining a first reference operating frequency based on the first historical operation data of the frequency converter of the lifting belt; determining a first intermediate value based on the current material conveying attribute and the preset standard conveying attribute; and determining the operating frequency to be used based on the first reference operating frequency and the first intermediate value.

[0040] In this embodiment, the output frequency of the frequency converter within a preset historical duration can be screened from the first historical operation data, and the average value of the screened output frequencies can be calculated as the first reference operation frequency. Alternatively, the output frequencies of the frequency converter at different historical moments can be screened from the first historical operation data, and the output frequencies can be weighted and averaged according to the weights of different historical moments, and the average value can be used as the reference operation frequency. Or, an output frequency can be randomly or conditionally selected from the first historical operation data as the first reference operation frequency. Or, through regression analysis or machine learning algorithms, the best operation frequency of the lifting belt under the current material conditions can be predicted according to the first historical operation data as the first reference operation frequency. Or, during the process of the belt scale historically conveying materials, the historical cumulative working duration of the belt scale can be determined, and the output frequency of the frequency converter of the lifting belt can be sampled according to a preset period; when the historical cumulative working duration reaches the preset duration, the sum of the frequencies sampled for the output frequency of the frequency converter within the historical cumulative working duration can be determined; based on the preset period, the preset duration, and the sum of the frequencies, the optimal matching operation frequency of the lifting belt can be determined; and the optimal matching operation frequency can be used as the operation frequency in the first historical operation data. Further, the optimal matching operation frequency closest to the current time in the first historical operation data can be used as the first reference operation frequency, or the average value of the preset number of optimal matching operation frequencies closest to the current time can also be used as the first reference operation frequency.

[0041] Exemplarily, the formula for determining the optimal matching operation frequency of the lifting belt can be: where F 匹配 is the optimal matching operation frequency, t 1 represents the preset period, T represents the historical cumulative working duration, and f 2 (i) represents the output frequency sampled within the i-th preset period. Further, according to the first-in, first-out principle, the optimal matching operation frequencies of the lifting belts of different grades m and different batches n can be stored in a matrix, and the matrix can be expressed as This matrix is the first historical operation data.

[0042] The technical solution provided in this embodiment determines the optimal matching operation frequency of the frequency converter of the lifting belt under the belt scale flow rate by sampling the output frequency of the frequency converter of the lifting belt at the same time as the running time of the belt scale for conveying materials, thereby determining the first reference operation frequency, and using the first reference operation frequency as the benchmark for regulating the output frequency of the frequency converter, which can effectively improve the smoothness of the operation of the lifting belt.

[0043] Further, the difference can be obtained by subtracting the current material conveying attribute from the preset standard conveying attribute; then, the quotient can be obtained by dividing the difference by the preset standard conveying attribute; further, the sum can be obtained by adding the quotient and the preset threshold (the preset threshold is 1), and the sum value is used as the first intermediate value. Further, the product can be obtained by multiplying the first intermediate value and the first reference operating frequency to obtain the operating frequency to be used. Exemplarily, the calculation formula for determining the operating frequency to be used can be expressed as: F2 = F1 × [1 + (Q 设定 -Q 工艺 ) / Q 工艺 , where F2 represents the operating frequency to be used; F1 represents the first reference operating frequency; Q 工艺 represents the preset standard conveying attribute; Q 设定 represents the current material conveying attribute of the belt scale.

[0044] S130. Based on the operating frequency to be used, regulate the output frequency of the frequency converter of the lifting belt to adjust the running speed of the lifting belt.

[0045] Specifically, the operating frequency to be used can be used as the current output frequency of the frequency converter of the lifting belt, that is, control the current output frequency of the frequency converter of the lifting belt to be the operating frequency to be used, so as to adjust the running speed of the lifting belt.

[0046] In this embodiment, when the current material conveying attribute is consistent with the preset standard conveying attribute data, the output frequency of the frequency converter of the lifting belt can also be regulated based on the first reference operating frequency, so as to adjust the running speed of the lifting belt.

[0047] The technical solution provided by the embodiment of the present invention obtains the current material conveying attribute of the belt scale; when the current material conveying attribute is inconsistent with the preset standard conveying attribute, based on the first historical operating data, the current material conveying attribute and the preset standard conveying attribute of the frequency converter of the lifting belt, determine the operating frequency to be used; based on the operating frequency to be used, regulate the output frequency of the frequency converter of the lifting belt to adjust the running speed of the lifting belt, solve the problem in the prior art that the speed of the lifting belt is adjusted by the occlusion signals of multiple photoelectric sensors, resulting in poor control stability of the lifting belt and affecting production efficiency, and realize that when the current material conveying attribute of the belt scale is inconsistent with the preset standard conveying attribute, based on the first historical operating data, the current material conveying attribute and the preset standard conveying attribute of the frequency converter of the lifting belt, determine the operating frequency to be used, and then based on the operating frequency to be used, regulate the output frequency of the frequency converter of the lifting belt to adjust the running speed of the lifting belt, so as to improve the accuracy of the lifting belt speed control, improve the running stability of the lifting belt, and ensure the stability of the material conveying of the belt scale, achieving the technical effect of improving production efficiency.

[0048] Embodiment 2

[0049] Figure 3 It is a flowchart of a control method for increasing the belt speed provided in the second embodiment of the present invention. On the basis of the foregoing embodiment, during the process of regulating the output frequency of the frequency converter of the lifting belt based on the operating frequency to be used, the current operating frequency of the belt scale can be obtained. Furthermore, when the current operating frequency is not within the preset range, based on the operating frequency to be used, the current operating frequency, and the second reference operating frequency of the belt scale, the linkage operating frequency is determined to regulate the output frequency of the frequency converter based on the linkage operating frequency. The specific implementation manner can refer to the technical solution of this embodiment. Among them, the same or corresponding technical terms as those in the above embodiment will not be elaborated herein.

[0050] As Figure 3 shown, the method specifically includes the following steps:

[0051] S210. Obtain the current material conveying attribute of the belt scale.

[0052] S220. When the current material conveying attribute is inconsistent with the preset standard conveying attribute, based on the first historical operating data of the frequency converter of the lifting belt, the current material conveying attribute, and the preset standard conveying attribute, determine the operating frequency to be used.

[0053] S230. Regulate the output frequency of the frequency converter of the lifting belt based on the operating frequency to be used to adjust the running speed of the lifting belt.

[0054] S240. Obtain the current operating frequency of the belt scale.

[0055] In practical applications, the operating frequency of the belt scale can be controlled by the frequency converter of the belt scale, and the operating frequency of the frequency converter of the belt scale can be collected in real time through the control system or sensor of the belt scale, so as to obtain the current operating frequency of the belt scale.

[0056] S250. When the current operating frequency meets the preset condition, based on the operating frequency to be used, the current operating frequency, and the second reference operating frequency of the belt scale, determine the linkage operating frequency.

[0057] Among them, the second reference operating frequency is determined based on the second historical operating data of the belt scale. The second historical operating data can be the operating frequency of the belt scale within the historical time. The second reference operating frequency can be the frequency optimized based on the second historical operating data. The preset condition is the condition for judging whether to adjust the second reference operating frequency. The preset condition is that the current operating frequency is greater than the sum of the second reference operating frequency and the preset tolerance parameter. The preset tolerance parameter is a parameter for adjusting the second reference operating frequency of the belt scale.

[0058] It should be noted that the belt scale is a flow control device. The belt speed of the belt scale is continuously adjusted according to the change of the material weight at the load cell. When the upstream incoming material is insufficient, the belt speed of the belt scale increases accordingly to meet the flow demand. At this time, the lifting belt also needs to increase its speed to increase the feeding amount. However, tobacco material is a non-uniform material, and the material density on the belt scale is not completely constant. Therefore, under the constant flow of the belt scale, the belt speed still has a certain fluctuation. Therefore, a preset tolerance parameter Δf can be set for the operating frequency of the belt scale. Optionally, Δf = 7Hz.

[0059] In this embodiment, when the current operating frequency is greater than the sum of the second reference operating frequency and the preset tolerance parameter, it can be considered that the current operating frequency meets the preset condition. At this time, the difference between the current operating frequency and the second reference operating frequency can be processed to obtain a difference value as the first data. Then, the first data and the second reference operating frequency are divided to obtain a quotient value as the second data. The sum of the preset threshold and the second data is processed to obtain a sum value as the third data. The product of the operating frequency to be used and the third data is processed to obtain the linkage operating frequency. When the current operating frequency is less than or equal to the sum of the second reference operating frequency and the preset tolerance parameter, it can be considered that the current operating frequency does not meet the preset condition. In the case where the current operating frequency does not meet the preset condition, the operating frequency to be used can be directly used as the linkage operating frequency to adjust the output frequency of the frequency converter to adjust the lifting belt speed. Exemplarily, if F 皮带秤 ≤F 皮带秤参考 +Δf, it is considered that the current operating frequency does not meet the preset condition, and F 提升带联动 =F2; if F 皮带秤 >F 皮带秤参考 +Δf, it is considered that the current operating frequency meets the preset condition, and F 提升带联动 =F2×[1+(F 皮带秤 -F 皮带秤参考 ) / F 皮带秤参考 . Among them, F 皮带秤 represents the current operating frequency of the belt scale; F 皮带秤参考 represents the second reference operating frequency of the belt scale; F2 represents the operating frequency to be used; Δf represents the preset tolerance parameter; F 提升带联动 represents the linkage operating frequency.

[0060] In actual cigarette making production, the set conveying flow of the belt scale for each brand number at a certain process is fixed, but the operating frequency of the belt scale will inevitably be adjusted slightly according to the material on the scale. In order to accurately reflect the operating condition of the belt scale with frequency, the average value of the operating frequency of the belt scale under each material batch can be calculated, that is, every t 1Record the operating frequency of the belt scale and accumulate it until the belt has been in production for T time and then end. Finally, divide the accumulated value by the number of accumulations to obtain the average batch operation value of the belt scale. The average batch operation value is the operating frequency of the belt scale within the historical time in the second historical operation data. The formula for determining the average batch operation value can be expressed as: Where f ave represents the average batch operation value, represents the accumulated value of the operating frequency of the belt scale. Further, according to the first-in, first-out principle, the average batch operation values of the belt scales under different batches of two different brand numbers of second-generation expanded tobacco and first-class expanded tobacco can be stored in a matrix, and the matrix can be expressed as As the second historical operation data. When producing a certain brand m, the average of the average batch operation values of the belt scales of the nearest j batches under brand m in the matrix can be used as the second reference operating frequency, that is, the second reference operating frequency F 皮带秤参考 =(f m1 +f m2 +…+f mj ) / j. Optionally, j = 5. That is to say, when determining the second reference operating frequency of the belt scale, the average of the average batch operation values of the preset number of batches closest to the current time in the second historical operation data can be used as the second reference operating frequency.

[0061] S260. Regulate the output frequency of the frequency converter based on the linked operating frequency.

[0062] In this embodiment, according to the linked operating frequency, an instruction can be sent to the frequency converter through the PLC or the control system to adjust the output frequency of the frequency converter. The frequency converter adjusts the motor speed according to the received signal, thereby changing the running speed of the lifting belt to optimize the material transportation.

[0063] It should be noted that the lifting belt and the belt scale are connected through a metering pipe, and the materials on the lifting belt are transmitted to the belt scale through the metering pipe. The metering pipe is a volume control device. As long as the materials always maintain a certain height in the metering pipe, the belt scale can obtain a stable material supply; an appropriate lifting belt speed is a necessary condition to ensure the material height in the metering pipe. Therefore, based on the amount of materials in the metering pipe, the output frequency of the lifting belt frequency converter can be adjusted to adjust the lifting belt speed.

[0064] In this embodiment, it is also possible to, when it is detected that the sensors at different height positions in the metering pipe are not blocked, and based on the preset maximum frequency to regulate the output frequency of the frequency converter, when it is detected that the sensor at the position one above the lowest position is blocked, regulate the output frequency of the frequency converter based on the linkage operation frequency; when it is detected that the sensor at the highest position is blocked and based on the preset minimum frequency to regulate the output frequency of the frequency converter, when it is detected that the sensor at the position one below the highest position is not blocked, regulate the output frequency of the frequency converter based on the linkage operation frequency.

[0065] Among them, the sensor can be a through-beam photoelectric sensor. The metering pipe has multiple groups of through-beam photoelectric sensors. Different height positions at least include a low position, a middle position, and a high position. The occlusion situation of the photoelectric sensors at different height positions can reflect the material occupancy level in the metering pipe in real time. The actual control target is to always maintain the material occupancy level in the metering pipe at the middle-position photoelectric sensor.

[0066] Specifically, when it is detected that all the sensors at all height positions in the metering pipe are not blocked, it is considered that there is a shortage of materials in the metering pipe and the feeding of the lifting belt is insufficient. At this time, the output frequency of the frequency converter can be regulated based on the preset maximum frequency, so that the lifting belt runs at the maximum speed. Further, when it is detected that the sensor at the position one above the lowest position is blocked, the output frequency of the frequency converter can be regulated based on the linkage operation frequency to restore the speed of the lifting belt. Exemplarily, when the high, middle, and low groups of photoelectric sensors are not blocked, the output frequency of the frequency converter is adjusted to the preset maximum frequency; when the low and middle material level photoelectric sensors are blocked, the output frequency of the frequency converter is adjusted to the linkage operation frequency. It is also possible to, when it is detected that the sensor at the highest position is blocked, consider that the material occupancy level in the current metering pipe is high and there is a risk of material blockage. At this time, the output frequency of the frequency converter can be regulated based on the preset minimum frequency, so that the lifting belt stops running. Further, when it is detected that the sensor at the position one below the highest position is not blocked, the lifting belt can be made to resume running, and the output frequency of the frequency converter is regulated based on the linkage operation frequency. Exemplarily, when the high, middle, and low groups of photoelectric sensors are blocked at the same time, the output frequency of the frequency converter is adjusted to the preset minimum frequency, and when the high and middle material level photoelectric sensors are not blocked, the output frequency of the frequency converter is adjusted to the linkage operation frequency again to restore the running state of the lifting belt.

[0067] It should be noted that when the occupancy level in the metering pipe is between the low-level pipe sensor and the high-level sensor, and the output frequency of the frequency converter is regulated based on the linkage operation frequency, the two-way timing function of the metering pipe middle-position sensor being blocked and unblocked can be enabled. According to the length of time the middle-position sensor is blocked or unblocked, the output frequency of the frequency converter of the lifting belt is adjusted accordingly. For example, when the middle-position sensor is blocked for a certain period of time, the output frequency of the frequency converter of the lifting belt can be reduced by the corresponding frequency adjustment value; when the middle-position sensor is unblocked for a certain period of time, the output frequency of the frequency converter of the lifting belt can be increased by the corresponding frequency adjustment value.

[0068] In this embodiment, it is also possible to determine the cumulative occlusion duration during the process of detecting that the sensor at the middle height position is blocked; in the case where the cumulative occlusion duration reaches the shortest sub-duration in the preset first duration set, the linkage operation frequency is adjusted based on the frequency adjustment parameter corresponding to the longest sub-duration in the preset first duration set that the cumulative occlusion duration reaches, and the output frequency of the frequency converter is regulated based on the adjusted linkage operation frequency; when it is detected that the middle-position sensor is not blocked, the cumulative occlusion duration is updated to a preset threshold.

[0069] Among them, the preset first duration set contains multiple sub-durations, and different sub-durations in the preset first duration set correspond to different frequency adjustment parameters. For example, as the sub-duration increases, the frequency adjustment parameter increases or decreases accordingly. The frequency adjustment parameter is used to adjust the linkage operation frequency. The preset threshold is 0.

[0070] Specifically, when it is detected that the middle-position sensor is blocked, the cumulative duration of being blocked can be continuously recorded as the cumulative occlusion duration. The cumulative occlusion duration is compared with the shortest sub-duration in the preset first duration set. If the cumulative occlusion duration is consistent with the shortest sub-duration, the linkage operation frequency is adjusted downward based on the frequency adjustment parameter corresponding to the consistent shortest sub-duration. For example, the difference between the linkage operation frequency and the frequency adjustment parameter is processed to obtain the difference as the adjusted linkage operation frequency. Furthermore, the output frequency of the frequency converter is regulated based on the adjusted linkage operation frequency. It should be noted that the process of the middle-position sensor being blocked is a continuous process, so the value of the cumulative occlusion duration continuously increases, and the shortest sub-duration is just one of the durations included in the preset first duration set. Therefore, after it is detected that the cumulative occlusion duration reaches the shortest sub-duration in the preset first duration set, the linkage operation frequency can be adjusted downward based on the frequency adjustment parameter corresponding to the longest sub-duration in the preset first duration set that the cumulative occlusion duration reaches, and the output frequency of the lifting belt frequency converter is adjusted to the adjusted linkage operation frequency. Further, when it is detected that the middle-position sensor is not blocked, the cumulative occlusion duration can be updated to the preset threshold.

[0071] Exemplarily, when the sensor in the middle position of the metering pipe is blocked, a timer is started to measure the duration of the blockage of the middle position sensor, and the cumulative blockage duration T is obtained. 1 . When the middle position sensor is not blocked, the timer is cleared and the timing stops. A mapping set A of sub - durations in the preset first duration set and frequency adjustment parameters is preset. 1 It is expressed as: A 1 ={(T 11 , f 11 ), (T 12 , f 12 ),…, (T 1i , f 1i )}, where T 1i represents the i - th sub - duration in the preset first duration set, and f 1i represents the frequency adjustment parameter corresponding to the i - th sub - duration; when the cumulative blockage duration T 1 ≥T 1i , the difference is processed between the linked operation frequency and the frequency adjustment parameter f 1i , and the obtained difference is used as the adjusted linked operation frequency.

[0072] In this embodiment, during the process of detecting that the sensor at the middle height position is not blocked, the cumulative unblocked duration can also be determined; when the cumulative unblocked duration reaches the shortest sub - duration in the preset second duration set, the linked operation frequency is adjusted based on the frequency adjustment parameter corresponding to the maximum sub - duration in the preset second duration set that the cumulative unblocked duration reaches, and the output frequency of the frequency converter is regulated based on the adjusted linked operation frequency; when it is detected that the sensor in the middle position is blocked, the cumulative unblocked duration is updated to a preset threshold value. Among them, the preset second duration set contains multiple sub - durations, and different sub - durations in the preset second duration set correspond to different frequency adjustment parameters.

[0073] Specifically, when it is detected that the sensor in the middle position is not blocked, continuously record the cumulative duration of non-blocking as the cumulative non-blocking duration. Compare the cumulative non-blocking duration with the shortest sub-duration in the preset second duration set. If the cumulative non-blocking duration is consistent with the shortest sub-duration, increase the linkage operation frequency based on the frequency adjustment parameter corresponding to the consistent shortest sub-duration. For example, perform a summation process on the linkage operation frequency and the frequency adjustment parameter, and use the obtained sum as the adjusted linkage operation frequency. Furthermore, based on the increased linkage operation frequency, control the output frequency of the frequency converter. It should be noted that the process of the sensor in the middle position not being blocked is also a continuous process, so the value of the cumulative non-blocking duration continuously increases, and the shortest sub-duration is just one duration included in the preset second duration set. Therefore, after it is detected that the cumulative non-blocking duration reaches the shortest sub-duration in the preset second duration set, increase the linkage operation frequency based on the frequency adjustment parameter corresponding to the maximum sub-duration in the preset second duration set that the cumulative non-blocking duration reaches, and adjust the output frequency of the lifting belt frequency converter to the adjusted linkage operation frequency. Further, when it is detected that the sensor in the middle position is blocked, the cumulative non-blocking duration can be updated to a preset threshold.

[0074] Exemplarily, when the middle position sensor of the metering pipe is not blocked, start a timer to measure the continuous duration of the middle position sensor not being blocked, and obtain the cumulative non-blocking duration T2. When the middle position sensor is blocked, the timer is cleared and the timing stops. The mapping set A between the sub-durations in the preset second duration set and the frequency adjustment parameters 2 is expressed as: A 2 ={(T 21 , f 21 ), (T 22 , f 22 ), …, (T 2i , f 2i )}; T 2i represents the i-th sub-duration in the preset second duration set, and f 2i represents the frequency adjustment parameter corresponding to the i-th sub-duration; when the cumulative non-blocking duration T2 ≥ T 2i , perform a summation process on the linkage operation frequency and the frequency adjustment parameter f 2i , and use the obtained sum value as the adjusted linkage operation frequency.

[0075] In this embodiment, during the process of the belt scale conveying materials, the cumulative operation duration of the belt scale can also be determined, and the output frequency of the frequency converter can be sampled according to a preset period; when the cumulative operation duration reaches a preset third duration, the sum of the frequencies obtained by sampling the output frequency of the frequency converter during the cumulative operation duration can be determined; based on the preset period, the preset third duration, the sum of the frequencies, and the first reference operating frequency, a correction frequency can be determined; the first reference operating frequency can be corrected based on the correction frequency, so as to determine the operating frequency to be used based on the current material conveying attribute, the preset standard conveying attribute, and the corrected first reference operating frequency, and the output frequency of the frequency converter of the lifting belt can be regulated based on the operating frequency to be used.

[0076] It can be understood that: when the system controls the belt scale to convey materials, a timer can be used to continuously record the cumulative operation duration of the belt scale. At the same time, the output frequency of the frequency converter can be sampled once every preset period. When it is detected that the cumulative operation duration reaches the preset third duration, the output frequencies obtained by sampling the output frequency of the frequency converter during the cumulative operation duration can be accumulated to obtain the sum of the frequencies. Further, the correction frequency can be determined by combining the preset period, the preset third duration, the sum of the frequencies, and the first reference operating frequency. The correction frequency can be used as the new first reference operating frequency to realize the correction of the first reference operating frequency. So that when performing step S130, the operating frequency to be used can be determined based on the current material conveying attribute, the preset standard conveying attribute, and the corrected first reference operating frequency, and the output frequency of the frequency converter of the lifting belt can be regulated based on the operating frequency to be used.

[0077] Optionally, the method for determining the correction frequency can be: determining a matching frequency based on the preset period, the preset third duration, and the sum of the frequencies; determining the correction frequency based on the matching frequency and the first reference operating frequency.

[0078] Specifically, the preset period and the preset third duration can be divided to obtain a quotient value, and the quotient value and the sum of the frequencies can be multiplied to obtain a product value as the matching frequency. Further, the difference between the matching frequency and the first reference operating frequency can be calculated to obtain a difference value; the quotient obtained by dividing the difference value by a preset second threshold (the preset second threshold can be 2) and the sum of the quotient value and the first reference operating frequency can be used as the correction frequency.

[0079] Exemplarily, when the lifting belt is running, every preset period t 1 , the output frequency of the frequency converter of the lifting belt is accumulated once. When the cumulative operation duration of the belt scale reaches the preset third duration T 3 , the output frequency of the frequency converter is accumulated n' times. The matching frequency of the frequency converter of the lifting belt within T 3 can be determined based on formula (1); formula (1) can be expressed as: Among them f 2 (j) represents the output frequency sampled in the j-th preset period t 1 below, and the sum of frequencies is represented by F′ represents the sum of frequencies, and F′ 匹配 represents the matching frequency. According to this matching frequency, the first reference operating frequency of the lifting belt is corrected in real time. The correction frequency can be determined based on formula (2); formula (2) can be expressed as:

[0080] F Lifting Belt Correction = F Lifting Belt Reference + (F′ Matching - F Lifting Belt Reference) / 2; where F 提升带参考 represents the first reference operating frequency. At the same time, reset T 3 and the currently accumulated sum of frequencies, and the next timing cycle starts. That is to say, in actual production, the first reference operating frequency of the lifting belt can be corrected every T 3 operation duration, so as to adapt to the changes in the current production environment and obtain a new first reference operating frequency; substitute the corrected first reference operating frequency into step S130 as the adjustment benchmark for the new operating frequency to be used.

[0081] The technical solution of this embodiment, when the current operating frequency of the belt scale meets the preset conditions, determines the linkage operating frequency based on the operating frequency to be used, the current operating frequency, and the second reference operating frequency of the belt scale, and then regulates the output frequency of the frequency converter based on the linkage operating frequency to achieve linkage with the operation of the belt scale, so as to adjust the speed of the lifting belt and make the speed of the lifting belt run smoothly in a small range, solve problems such as frequent start-stop and large-speed adjustment of the lifting belt, effectively reduce the mechanical impact and damage of the equipment, and extend the service life. At the same time, by automatically adjusting and intelligently correcting the speed of the lifting belt according to the material in the metering pipe, intelligent speed adjustment is achieved, and the lifting belt runs smoothly.

[0082] Embodiment Three

[0083] As an optional embodiment of the above embodiment, in order to make those skilled in the art further clear the technical solution of the embodiment of the present invention, a specific application scenario example is given. Specifically, the following specific content can be referred to.

[0084] See Figure 4 , the technical solution provided by this embodiment can be implemented based on a control system. The control system includes a linkage module, an adjustment module, and an optimization module. The first reference operating frequency can be set; the linkage module is used to judge whether the current conveying flow rate (i.e., the current material conveying attribute) Q 设定 of the belt scale is equal to the preset process flow rate (i.e., the preset standard conveying attribute) Q 工艺 , if so, that is, Q 设定 = Q 工艺, then determine that the output frequency of the frequency converter of the lifting belt = the first reference operating frequency. If not, based on the current material conveying attribute, the preset standard conveying attribute, and the first reference operating frequency, determine the operating frequency to be used, and determine that the output frequency of the frequency converter of the lifting belt = the operating frequency to be used. Optionally, the preset standard conveying attribute Q 工艺 = 4250 Kg / h. Further, determine whether the belt scale frequency (i.e., the current operating frequency) is within the tolerance range. If so, confirm that the current operating frequency meets the preset conditions, and based on the operating frequency to be used, the current operating frequency, and the second reference operating frequency of the belt scale, determine the linkage operating frequency, and the output frequency = the linkage operating frequency; if not, confirm that the current operating frequency does not meet the preset conditions, and the output frequency = the operating frequency to be used. The adjustment module is used to determine whether the sensor with the highest position is blocked. If so, the output frequency of the lifting belt frequency converter = the preset minimum frequency; if not, determine whether the sensor with the lowest position is blocked. If not, the output frequency of the lifting belt frequency converter = the preset maximum frequency. If the sensor with the lowest position is blocked, determine whether the sensor in the middle position is blocked. If not, start the timer, reset the cumulative occlusion duration T1, and time the duration when the sensor in the middle position is not blocked to obtain the cumulative non-occlusion duration T2. When the sensor in the middle position is blocked, T2 is cleared and the timing stops. When T 2 ≥ T 2i , the adjusted linkage operating frequency = the linkage operating frequency + f 2i , otherwise the linkage operating frequency remains unchanged. If the sensor in the middle position is blocked, start the timer, reset the cumulative non-occlusion duration T2, and time the duration when the sensor in the middle position is blocked to obtain the cumulative occlusion duration T1. When the sensor in the middle position is not blocked, T1 is cleared and the timing stops. When T 1 ≥ T 1i , the adjusted linkage operating frequency = the linkage operating frequency - f 1i , otherwise the linkage operating frequency remains unchanged. The optimization module is used to continuously record the cumulative operation duration of the belt scale using a timer during the process of the belt scale conveying materials. When the cumulative operation duration T ≥ T3, determine the correction frequency, and make the first reference operating frequency = the correction frequency, otherwise the linkage operating frequency remains unchanged.

[0085] The technical solution of this embodiment is to obtain the current material conveying attribute of the belt scale; when the current material conveying attribute is inconsistent with the preset standard conveying attribute, based on the first historical operation data of the frequency converter of the lifting belt, the current material conveying attribute, and the preset standard conveying attribute, determine the operating frequency to be used; based on the operating frequency to be used, regulate the output frequency of the frequency converter of the lifting belt to adjust the running speed of the lifting belt, which solves the problem in the prior art that the speed of the lifting belt is adjusted by the occlusion signals of multiple groups of photoelectric sensors, resulting in poor control stability of the lifting belt and affecting production efficiency. When the current material conveying attribute of the belt scale is inconsistent with the preset standard conveying attribute, based on the first historical operation data of the frequency converter of the lifting belt, the current material conveying attribute, and the preset standard conveying attribute, determine the operating frequency to be used, and then based on the operating frequency to be used, regulate the output frequency of the frequency converter of the lifting belt to adjust the running speed of the lifting belt, so as to improve the accuracy of the lifting belt speed control, improve the running stability of the lifting belt, and ensure the stability of the material conveying of the belt scale, achieving the technical effect of improving production efficiency.

[0086] Embodiment 4

[0087] Figure 5 is a schematic structural diagram of a control device for the speed of a lifting belt provided according to Embodiment 4 of the present invention. As Figure 5 shown, this device is configured in a material conveying device, and the material conveying device includes a feeder, a lifting belt, a metering pipe, and a belt scale; the first discharge end of the feeder is connected to the first feed end of the lifting belt, and the second discharge end of the lifting belt is connected to the second feed end of the metering pipe; the third discharge end of the metering pipe is connected to the third feed end of the belt scale. This device includes: a material conveying attribute acquisition module 310, an operating frequency to be used determination module 320, and a frequency regulation module 330.

[0088] Among them, the material conveying attribute acquisition module 310 is used to obtain the current material conveying attribute of the belt scale; the operating frequency to be used determination module 320 is used to determine the operating frequency to be used based on the first historical operation data of the frequency converter of the lifting belt, the current material conveying attribute, and the preset standard conveying attribute when the current material conveying attribute is inconsistent with the preset standard conveying attribute; the frequency regulation module 330 is used to regulate the output frequency of the frequency converter of the lifting belt based on the operating frequency to be used to adjust the running speed of the lifting belt.

[0089] The technical solution of this embodiment is to obtain the current material conveying attribute of the belt scale; when the current material conveying attribute is inconsistent with the preset standard conveying attribute, based on the first historical operation data of the frequency converter of the lifting belt, the current material conveying attribute and the preset standard conveying attribute, determine the operating frequency to be used; based on the operating frequency to be used, regulate the output frequency of the frequency converter of the lifting belt to adjust the operating speed of the lifting belt, which solves the problem in the prior art that the speed of the lifting belt is adjusted by the occlusion signals of multiple groups of photoelectric sensors, resulting in poor control stability of the lifting belt and affecting production efficiency. When the current material conveying attribute of the belt scale is inconsistent with the preset standard conveying attribute, based on the first historical operation data of the frequency converter of the lifting belt, the current material conveying attribute and the preset standard conveying attribute, determine the operating frequency to be used, and then based on the operating frequency to be used, regulate the output frequency of the frequency converter of the lifting belt to adjust the operating speed of the lifting belt, so as to improve the accuracy of the speed control of the lifting belt, improve the smoothness of the operation of the lifting belt, ensure the stability of the material conveying of the belt scale, and achieve the technical effect of improving production efficiency.

[0090] Based on the above device, optionally, the operating frequency determination module 320 includes:

[0091] The first reference operating frequency determination unit is used to determine the first reference operating frequency based on the first historical operation data of the frequency converter of the lifting belt;

[0092] The first intermediate value determination unit is used to determine the first intermediate value based on the current material conveying attribute and the preset standard conveying attribute;

[0093] The operating frequency determination unit to be used is used to determine the operating frequency to be used based on the first reference operating frequency and the first intermediate value.

[0094] Based on the above device, optionally, the device further includes:

[0095] The current operating frequency determination unit is used to obtain the current operating frequency of the belt scale;

[0096] The linked operating frequency determination unit is used to determine the linked operating frequency based on the operating frequency to be used, the current operating frequency and the second reference operating frequency of the belt scale when the current operating frequency meets the preset conditions;

[0097] The linked operating frequency regulation unit is used to regulate the output frequency of the frequency converter based on the linked operating frequency.

[0098] Based on the above device, optionally, the device further includes:

[0099] A maximum frequency regulation unit, which is configured to, when it is detected that the sensors at different height positions in the metering pipe are not blocked and the output frequency of the frequency converter is regulated based on a preset maximum frequency, regulate the output frequency of the frequency converter based on the linked operation frequency when it is detected that the sensor at the position one above the lowest position is blocked;

[0100] A minimum frequency regulation unit, which is configured to, when it is detected that the sensor at the highest position is blocked and the output frequency of the frequency converter is regulated based on a preset minimum frequency, regulate the output frequency of the frequency converter based on the linked operation frequency when it is detected that the sensor at the position one below the highest position is not blocked.

[0101] Based on the above device, optionally, the device further includes:

[0102] An accumulated occlusion duration determination unit, which is configured to determine an accumulated occlusion duration during the process of detecting that the sensor at the middle position is blocked;

[0103] A first frequency adjustment unit, which is configured to, when the accumulated occlusion duration reaches the shortest sub-duration in a preset first duration set, adjust the linked operation frequency based on the frequency adjustment parameter corresponding to the maximum sub-duration in the preset first duration set that the accumulated occlusion duration reaches, and regulate the output frequency of the frequency converter based on the adjusted linked operation frequency;

[0104] An accumulated occlusion duration update unit, which is configured to update the accumulated occlusion duration to a preset threshold when it is detected that the sensor at the middle position is not blocked.

[0105] Based on the above device, optionally, the device further includes:

[0106] An accumulated non-occlusion duration determination unit, which is configured to determine an accumulated non-occlusion duration during the process of detecting that the sensor at the middle position is not blocked;

[0107] A second frequency adjustment unit, which is configured to, when the accumulated non-occlusion duration reaches the shortest sub-duration in a preset second duration set, adjust the linked operation frequency based on the frequency adjustment parameter corresponding to the maximum sub-duration in the preset second duration set that the accumulated non-occlusion duration reaches, and regulate the output frequency of the frequency converter based on the adjusted linked operation frequency;

[0108] An accumulated non-occlusion duration update determination unit, which is configured to update the accumulated non-occlusion duration to a preset threshold when it is detected that the sensor at the middle position is blocked.

[0109] Based on the above device, optionally, the device further includes:

[0110] An accumulated operation duration determination unit is configured to determine the accumulated operation duration of the belt scale during the process of the belt scale conveying materials, and sample the output frequency of the frequency converter according to a preset period;

[0111] A determination unit is configured to determine the total frequency obtained by sampling the output frequency of the frequency converter within the accumulated operation duration when the accumulated operation duration reaches a preset third duration;

[0112] A corrected frequency determination unit is configured to determine a corrected frequency based on the preset period, the preset third duration, the total frequency, and the first reference operating frequency;

[0113] A frequency correction unit is configured to correct the first reference operating frequency based on the corrected frequency, so as to determine a to-be-applied operating frequency based on the current material conveying attribute, the preset standard conveying attribute, and the corrected first reference operating frequency, and regulate the output frequency of the frequency converter of the lifting belt based on the to-be-applied operating frequency.

[0114] Based on the above device, optionally, the corrected frequency determination unit includes:

[0115] A matching frequency determination unit is configured to determine a matching frequency based on the preset period, the preset third duration, and the total frequency;

[0116] A corrected frequency determination subunit is configured to determine a corrected frequency based on the matching frequency and the first reference operating frequency.

[0117] The control device for the speed of the lifting belt provided by the embodiment of the present invention can execute the control method for the speed of the lifting belt provided by any embodiment of the present invention, and has corresponding functional modules and beneficial effects for executing the method.

[0118] Embodiment 5

[0119] Figure 6 It is a schematic structural diagram of an electronic device for implementing the control method for the speed of the lifting belt in the embodiment of the present invention. The electronic device is intended to represent various forms of digital computers, such as, a laptop computer, a desktop computer, a workbench, a personal digital assistant, a server, a blade server, a mainframe computer, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as, a personal digital processor, a cellular phone, a smart phone, a wearable device (such as a helmet, glasses, a watch, etc.) and other similar computing devices. The components shown herein, their connections and relationships, and their functions are only examples, and are not intended to limit the implementation of the present invention described herein and / or claimed.

[0120] Such as Figure 6As shown, the electronic device 20 includes at least one processor 11 and a memory communicatively connected to the at least one processor 11, such as a read-only memory (ROM) 12, a random access memory (RAM) 13, etc. The memory stores a computer program executable by the at least one processor. The processor 11 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 12 or the computer program loaded from the storage unit 18 into the random access memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the electronic device 20 can also be stored. The processor 11, the ROM 12, and the RAM 13 are connected to each other via a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0121] Multiple components in the electronic device 20 are connected to the I / O interface 15, including: an input unit 16, such as a keyboard, a mouse, etc.; an output unit 17, such as various types of displays, speakers, etc.; a storage unit 18, such as a magnetic disk, an optical disc, etc.; and a communication unit 19, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 19 allows the electronic device 20 to exchange information / data with other devices via a computer network such as the Internet and / or various telecommunication networks.

[0122] The processor 11 can be various general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of the processor 11 include but are not limited to a central processing unit (CPU), a graphics processing unit (GPU), various dedicated artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, etc. The processor 11 executes the various methods and processes described above, such as the control method for increasing the belt speed.

[0123] In some embodiments, the control method for increasing the belt speed can be implemented as a computer program tangibly embodied in a computer-readable storage medium, such as the storage unit 18. In some embodiments, part or all of the computer program can be loaded and / or installed onto the electronic device 20 via the ROM 12 and / or the communication unit 19. When the computer program is loaded into the RAM 13 and executed by the processor 11, one or more steps of the control method for increasing the belt speed described above can be executed. Alternatively, in other embodiments, the processor 11 can be configured to execute the control method for increasing the belt speed in any other appropriate manner (e.g., by means of firmware).

[0124] The various embodiments of the systems and techniques described above in this specification can be implemented in digital electronic circuitry, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on a chip (SOCs), complex programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments can include: being implemented in one or more computer programs that are executable and / or interpretable on a programmable system including at least one programmable processor, which can be a special-purpose or general-purpose programmable processor that receives data and instructions from, and transmits data and instructions to, a storage system, at least one input device, and at least one output device.

[0125] The computer program for implementing the methods of the present invention can be written in any combination of one or more programming languages. These computer programs can be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the computer programs, when executed by the processor, cause the functions / operations specified in the flowchart and / or block diagram to be implemented. The computer program can be executed entirely on the machine, partly on the machine, as a stand-alone software package partly on the machine and partly on a remote machine or entirely on the remote machine or server.

[0126] In the context of the present invention, a computer-readable storage medium can be a tangible medium that can contain, or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. The computer-readable storage medium can include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. Alternatively, the computer-readable storage medium can be a machine-readable signal medium. More specific examples of the machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or Flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0127] To provide interaction with a user, the systems and techniques described herein can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and a pointing device (e.g., a mouse or a trackball) by which the user can provide input to the electronic device. Other kinds of devices can also be used to provide interaction with the user; for example, the feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including acoustic input, voice input, or tactile input).

[0128] The systems and techniques described herein can be implemented in a computing system that includes backend components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes frontend components (e.g., a user computer having a graphical user interface or a web browser through which the user can interact with an implementation of the systems and techniques described herein), or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system can be interconnected to each other by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local area network (LAN), wide area network (WAN), blockchain network, and the Internet.

[0129] A computing system can include a client and a server. The client and the server are generally remote from each other and typically interact through a communication network. The relationship between the client and the server is created by computer programs that run on the respective computers and have a client-server relationship with each other. The server can be a cloud server, also known as a cloud computing server or a cloud host, which is a host product in the cloud computing service system, solving the defects of difficult management and weak business scalability existing in traditional physical hosts and VPS services.

[0130] An embodiment of the present invention also provides a computer program product, including a computer program that, when executed by a processor, implements the control method for increasing the belt speed as provided in any embodiment of the present invention.

[0131] In the process of implementing the computer program product, computer program code for performing the operations of the present invention may be written in one or more programming languages or combinations thereof. The programming languages include object-oriented programming languages such as Java, Smalltalk, C++, and also include conventional procedural programming languages such as the "C" language or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, executed as a stand-alone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network - including a local area network (LAN) or a wide area network (WAN) - or, alternatively, may be connected to an external computer (e.g., by connecting through the Internet using an Internet service provider).

[0132] It should be understood that various forms of the processes shown above may be used, steps may be reordered, added, or deleted. For example, the steps recited in the present invention may be executed in parallel, sequentially, or in a different order, as long as the desired results of the technical solution of the present invention can be achieved, and no limitation is made herein.

[0133] The above specific embodiments do not constitute a limitation on the protection scope of the present invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A method for controlling the speed of a lifting belt, characterized in that: Applied to material conveying equipment, the material conveying equipment includes a feeder, a lifting belt, a metering tube and a belt scale; the first discharge end of the feeder is connected to the first feed end of the lifting belt, and the second discharge end of the lifting belt is connected to the second feed end of the metering tube; The third discharge end of the metering tube is connected to the third feed end of the belt scale, and the method comprises: Obtaining the current material transport properties of the belt scale; In the case where the current material conveying attribute is inconsistent with the preset standard conveying attribute, determining the operating frequency to be used based on the first historical operating data of the frequency converter of the lifting belt, the current material conveying attribute and the preset standard conveying attribute; The output frequency of the frequency converter of the lifting belt is regulated based on the operating frequency to be used to adjust the operating speed of the lifting belt.

2. The method according to claim 1, characterized in that The determining of the operating frequency to be used based on the first historical operating data of the frequency converter of the lifting belt, the current material conveying attribute and the preset standard conveying attribute comprises: determining a first reference operating frequency based on first historical operating data of a frequency converter of the lifting belt; Determining a first intermediate value based on the current material conveying attribute and the preset standard conveying attribute; An operating frequency to be used is determined based on the first reference operating frequency and the first intermediate value.

3. The method according to claim 1, characterized in that In the process of regulating the output frequency of the frequency converter of the boost belt based on the operating frequency to be used, the method further includes: Get the current operating frequency of the belt scale; In the case where the current operating frequency meets the preset condition, determining the linkage operating frequency based on the operating frequency to be used, the current operating frequency and the second reference operating frequency of the belt scale; The output frequency of the inverter is regulated based on the linkage operation frequency.

4. The method according to claim 3, characterized in that The method further comprises: When it is detected that the sensors at different heights in the metering tube are not blocked, the output frequency of the frequency converter is regulated based on the preset maximum frequency, and when it is detected that the sensor at the height position above the lowest position is blocked, the output frequency of the frequency converter is regulated based on the linkage operation frequency; When it is detected that the sensor with the highest altitude position is blocked, the output frequency of the inverter is regulated based on the preset minimum frequency. When it is detected that the sensor with the next highest altitude position is not blocked, the output frequency of the inverter is regulated based on the linkage operation frequency.

5. The method according to claim 4, characterized in that The method further comprises: In the process of detecting that the sensor at the middle height position is blocked, determining the accumulated blocking time; When the accumulated blocking duration reaches the shortest sub-duration in the preset first duration set, the linkage operation frequency is adjusted based on the frequency adjustment parameter corresponding to the maximum sub-duration in the preset first duration set reached by the accumulated blocking duration, and the output frequency of the inverter is regulated based on the adjusted linkage operation frequency; When it is detected that the sensor in the middle position is not blocked, the accumulated blocking duration is updated to a preset threshold.

6. The method according to claim 4, characterized in that The method further comprises: In the process of detecting that the sensor at the middle height position is not blocked, determining the accumulated unblocked time; When the accumulated unobstructed time reaches the shortest sub-time in the preset second time set, the linkage operation frequency is adjusted based on the frequency adjustment parameter corresponding to the maximum sub-time in the preset second time set reached by the accumulated unobstructed time, and the output frequency of the inverter is regulated based on the adjusted linkage operation frequency; When it is detected that the middle sensor is blocked, the accumulated unblocked time is updated to a preset threshold.

7. The method according to claim 2, characterized in that The method further comprises: During the process of the belt scale conveying materials, the accumulated operation time of the belt scale is determined, and the output frequency of the frequency converter is sampled according to a preset period; When the accumulated operation duration reaches a preset third duration, determining a frequency sum obtained by sampling the output frequency of the frequency converter within the accumulated operation duration; Determining a correction frequency based on the preset period, the preset third duration, the frequency sum, and the first reference operating frequency; The first reference operating frequency is corrected based on the correction frequency to determine the operating frequency to be applied based on the current material conveying properties, the preset standard conveying properties and the corrected first reference operating frequency, and the output frequency of the inverter of the lifting belt is regulated based on the operating frequency to be applied.

8. The method according to claim 7, characterized in that The determining of the correction frequency based on the preset period, the preset third duration, the frequency sum and the first reference operating frequency includes: Determine a matching frequency based on the preset period, the preset third duration, and the frequency sum; Based on the matching frequency and the first reference operating frequency, a correction frequency is determined.

9. A control device for increasing belt speed, characterized in that: The material conveying device is configured to include a feeder, a lifting belt, a metering tube and a belt scale; the first discharge end of the feeder is connected to the first feed end of the lifting belt, and the second discharge end of the lifting belt is connected to the second feed end of the metering tube; The third discharge end of the metering tube is connected to the third feed end of the belt scale, and the device comprises: A material conveying property acquisition module, used to acquire the current material conveying property of the belt scale; a module for determining the operating frequency to be used, for determining the operating frequency to be used based on the first historical operating data of the frequency converter of the lifting belt, the current material conveying attribute and the preset standard conveying attribute when the current material conveying attribute is inconsistent with the preset standard conveying attribute; A frequency control module is used to control the output frequency of the frequency converter of the lifting belt based on the operating frequency to be used, so as to adjust the operating speed of the lifting belt.

10. An electronic device, characterized in that: The electronic device comprises: at least one processor; and a memory in communication with the at least one processor; wherein, The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can perform the method for controlling the speed of the lifting belt according to any one of claims 1-8.

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