Stable control method and system for long-distance conveying belt

Abstract

The invention belongs to the technical field of control, and provides a stable control method and system for a long-distance conveying belt. The method comprises the steps of determining a plurality of replaced normal frequency conversion units under the condition that a fault frequency conversion unit needs to be cut out; acquiring first load information and second load information of the long-distance conveying belt, and performing jitter prediction analysis on the first load information by using a belt jitter analysis model to obtain multiple pieces of cut-in planning information of a plurality of normal frequency conversion units; and performing overload analysis on each cut-in planning information by using the second load information, screening to obtain target cut-in planning information, and controlling each normal frequency conversion unit to gradually perform hot cut-in according to the target cut-in planning information so as to replace each fault frequency conversion unit. According to the scheme, a long-distance conveying belt does not need to be stopped, and shaking of the belt can be reduced as much as possible in the hot cutting-in process.

Description

Technical Field

[0001] The present invention relates to the field of control technology, and in particular to a stable control method and system for a long-distance transmission belt. Background Art

[0002] In many industrial applications, the load power device is generally an electric motor, which is driven by a frequency converter. In some key process links, the load is not allowed to shut down, otherwise it will cause significant property losses or casualties.

[0003] For critical loads, one solution is: the system electrical power distribution solution uses two sets of frequency conversion devices for critical loads, one for use and one for backup, such as Figure 1 As shown in the figure, when one of the frequency converters is damaged, the other frequency converter is switched in. Another solution is to parallel the redundant power units, such as Figure 2 As shown in the figure, since the wearing parts of the inverter device are the main circuit power devices, the main circuit power devices are designed as power units. Multiple power units are connected in parallel. For critical loads, redundancy is achieved by increasing the number of power units. After a power unit fails, the faulty power unit is exited to ensure the continuous operation of the load equipment. However, the existing one-in-one-standby solution is divided into manual mode and automatic mode. In manual mode, after the running inverter fails, the manual operation of the standby inverter equipment generally takes about 5-10 minutes. In automatic mode, the switching time also takes 1-2 seconds. The parallel operation of redundant power units requires the removal of the electrical cable connection of the faulty unit. During the removal process, it is necessary to wait for the busbar to be discharged. The entire replacement process takes more than 30 minutes.

[0004] The above solutions can meet most field applications. However, when the long-distance belt transmission device is running at full load, if the inverter fails, the motor speed will quickly drop to zero speed. Restarting the belt at full load requires a large starting torque. Re-activating the inverter through the above two solutions requires a large starting current, which is easy to exceed the inverter current output capacity, resulting in inverter overcurrent fault and startup failure. In order to solve the problem of belt conveyor failure and full load startup, there are generally two solutions. One is to enlarge the frequency conversion equipment by about 2 times when selecting it, and match the power distribution capacity at the same time. The other is that after the belt conveyor stops, the maintenance personnel remove the transported items from the belt conveyor and start the belt with light load. The above two solutions have the problems of high cost and complex maintenance.

[0005] The present invention provides a stable control scheme for a long-distance transmission belt, which can realize the thermal exit of a faulty power unit and the thermal entry of a normal power unit, and can meet the application requirements of long-distance belt transport devices and other key loads without stopping. Summary of the invention

[0006] In view of the above technical problems, the present invention provides a method, system, electronic equipment, computer storage medium and computer program product for stabilizing control of a long-distance transmission belt.

[0007] The present invention discloses a stable control method for a long-distance transmission belt, the method comprising: When a faulty frequency conversion unit needs to be switched out, determine a number of normal frequency conversion units to replace; Obtain first load information and second load information of a long-distance transmission belt, use a belt jitter analysis model to perform jitter prediction analysis on the first load information, and obtain multiple cut-in planning information of a number of normal frequency conversion units, wherein the cut-in planning information includes a cut-in sequence and a cut-in interval of each normal frequency conversion unit; wherein the first load information is the load information of the existing load on the long-distance transmission belt, and the second load information is the load information of the newly added load on the long-distance transmission belt during the process of cutting in a number of normal frequency conversion units; The second load information is used to perform overload analysis on each of the switching planning information, and target switching planning information is screened to obtain the target switching planning information, and each of the normal frequency conversion units is controlled to be gradually hot-switched in according to the target switching planning information to replace each faulty frequency conversion unit.

[0008] Optionally, the determining of a number of normal frequency conversion units to be replaced includes: When a faulty frequency conversion unit needs to be switched out, all frequency conversion units in standby state are scanned to determine frequency conversion units in normal working state and with rated parameters closest to the faulty frequency conversion unit, and these frequency conversion units are determined as several normal frequency conversion units for replacement.

[0009] Optionally, the using a belt jitter analysis model to perform jitter prediction analysis on the first load information includes: The first load information is parsed and it is determined whether the cargo center of gravity height information is obtained. If the cargo center of gravity height information is higher than the target threshold, the belt jitter analysis model is used to perform jitter prediction analysis on the first load information. Otherwise, the belt jitter analysis model is not used to perform jitter prediction analysis on the first load information.

[0010] Optionally, the using of the belt jitter analysis model to perform jitter prediction analysis on the first load information to obtain multiple cut-in planning information of a plurality of normal frequency conversion units includes: Obtain the load history of the long-distance transmission belt in a recent period, calculate the average load fluctuation range according to the load history, and determine the target quantity according to the average load fluctuation range; The first rated parameters of each faulty frequency conversion unit, the second rated parameters of each normal frequency conversion unit, the first load information and the target quantity are input into the belt jitter analysis model to obtain multiple entry planning information corresponding to the target quantity analyzed by the belt jitter analysis model.

[0011] Optionally, the using the second load information to perform overload analysis on each of the switching planning information to filter and obtain target switching planning information includes: The predicted second load weight to be put on the long-distance transmission belt during the target cut-in period is obtained by parsing the second load information, and an overload analysis is performed on each cut-in sub-period in each cut-in planning information according to the second load weight, the preset transmission completion weight, and the first load weight; wherein the first load weight is obtained by parsing the first load information; The switching planning information with the lowest total overload power in all switching sub-periods is determined as the target switching planning information.

[0012] The present invention discloses a stable control system for a long-distance conveyor belt, the system comprising at least one processor and a memory, the processor calling and executing a computer program code stored in the memory to implement the following steps: When a faulty frequency conversion unit needs to be switched out, determine a number of normal frequency conversion units to replace; Obtain first load information and second load information of a long-distance transmission belt, use a belt jitter analysis model to perform jitter prediction analysis on the first load information, and obtain multiple cut-in planning information of a number of normal frequency conversion units, wherein the cut-in planning information includes a cut-in sequence and a cut-in interval of each normal frequency conversion unit; wherein the first load information is the load information of the existing load on the long-distance transmission belt, and the second load information is the load information of the newly added load on the long-distance transmission belt during the process of cutting in a number of normal frequency conversion units; The second load information is used to perform overload analysis on each of the switching planning information, and target switching planning information is screened to obtain the target switching planning information, and each of the normal frequency conversion units is controlled to be gradually hot-switched in according to the target switching planning information to replace each faulty frequency conversion unit.

[0013] The present invention also discloses an electronic device, comprising: at least one processor, a memory, and a computer program stored in the memory and executable on the at least one processor, wherein the processor is used to execute the computer program to implement the method described in any of the preceding items.

[0014] The present invention also discloses a computer storage medium, wherein the computer storage medium stores a computer program, and the computer program can be executed by a processor to implement the method as described in any of the above items.

[0015] The present invention also discloses a computer program product, wherein the computer program product includes computer codes, and the computer codes can be executed by a processor of an electronic device to implement any of the methods described above.

[0016] Compared with the prior art, the beneficial effects of the present application are: the long-distance transmission belt stable control method of the present invention can realize the hot cut-out of the faulty frequency conversion unit and the hot cut-in of the normal frequency conversion unit without stopping the machine, which greatly shortens the fault handling time and reduces the risk of system operation interruption. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a flow chart of a stable control method for a long-distance conveyor belt disclosed in an embodiment of the present invention; Figure 2 It is a structural schematic diagram of a driving system of a long-distance transmission belt based on a frequency conversion unit disclosed in an embodiment of the present invention; Figure 3 It is a structural schematic diagram of a stable control system for a long-distance transmission belt disclosed in an embodiment of the present invention. DETAILED DESCRIPTION

[0019] The following is a description of the implementation of the present application by specific specific embodiments. People familiar with the technology can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0020] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0021] In response to the above technical issues, such as Figure 1 As shown, an embodiment of the present invention discloses a stable control method for a long-distance conveyor belt, the method comprising: S10, when the faulty frequency conversion unit needs to be switched out, determining a number of normal frequency conversion units to be replaced.

[0022] In the process of transporting goods by conveyor belt over long distances, if one or more frequency converters are detected to be faulty (for example, abnormal current or over-temperature exceeding the safety range of the frequency converter is detected), the fault handling mechanism is immediately started. The working status of all frequency converters to be switched in is scanned and detected, and those frequency converters in normal working status are identified. These normal frequency converters are used to replace the faulty frequency converters. The power of each faulty frequency converter can be different.

[0023] Among them, Figure 2 As shown, the frequency conversion unit of the present invention includes a rectifier unit and an inverter unit.

[0024] S20, obtaining first load information and second load information of the long-distance transmission belt, using the belt jitter analysis model to perform jitter prediction analysis on the first load information, and obtaining multiple cut-in planning information of several normal frequency conversion units, wherein the cut-in planning information includes the cut-in sequence and cut-in interval of each normal frequency conversion unit; wherein the first load information is the load information of the existing load on the long-distance transmission belt, and the second load information is the load information of the newly added load on the long-distance transmission belt during the process of cutting in several normal frequency conversion units.

[0025] By sensing and inferring the motion state of the long-distance transmission belt, the relevant information of the goods currently being transmitted, that is, the first load information, can be predicted, and the first load information obtained is input into the pre-established belt vibration analysis model. Through the calculation and analysis of the model, it is predicted that if normal frequency conversion units of different powers are cut in at different orders and time intervals, the possible vibration of the belt can be generated.

[0026] After analysis and calculation, multiple cut-in planning information are obtained, for example: Cut-in planning information 1: normal frequency conversion unit 5 cuts in first, then cuts in to normal frequency conversion unit 6 after an interval of 2 seconds, and then cuts in to normal frequency conversion unit 7 after an interval of 3 seconds; Cut-in planning information 2: normal frequency conversion unit 6 cuts in first, then cuts in to normal frequency conversion unit 7 after an interval of 3 seconds, and then cuts in to normal frequency conversion unit 5 after an interval of 2 seconds.

[0027] In the process of preparing to cut in the determined normal frequency conversion unit (such as number 5, 6, 7), since the belt is still running, new goods will be continuously transported to the belt. Through relevant monitoring equipment (such as a computer vision-based cargo monitor installed at the starting end of the belt, etc.), the relevant information of the newly added goods on the belt during the process of cutting in the normal frequency conversion unit is obtained in real time, such as the weight of the goods (for example, it is expected that 0.5 tons of goods will be added every second), location and other information, that is, the second load information.

[0028] S30, using the second load information to perform overload analysis on each of the switching planning information, screening out target switching planning information, and controlling each of the normal frequency conversion units to gradually perform hot switching according to the target switching planning information to replace each faulty frequency conversion unit.

[0029] Combine the obtained second load information with each entry planning information obtained in the above steps. For each entry planning information, calculate whether the total load borne by the belt, motor and other equipment will exceed its rated load capacity in the process of cutting into the normal frequency conversion unit according to the plan, taking into account the continuous increase in the cargo load on the belt. For example, for planning information one, after the normal frequency conversion unit 5 is cut in, as time goes by and new cargo is continuously added, it is calculated that when the normal frequency conversion unit 6 is cut in, the total load may reach 120% of the rated load of the motor, and there is an overload risk; and for planning information two, it is calculated that during the entire normal frequency conversion unit cutting process, the total load is always maintained at about 90% of the rated load of the motor, and there will be no overload.

[0030] By performing overload analysis on each entry planning information, the entry planning information that will not cause device overload is screened out as the target entry planning information. In the above example, planning information 2 is determined as the target entry planning information.

[0031] According to the screened target cut-in planning information (such as the above-mentioned planning information 2), the normal frequency conversion unit 6 is controlled to hot-cut in first (hot-cut in means connecting the normal frequency conversion unit to the drive system and starting it to work without stopping the machine), and after an interval of 3 seconds, the normal frequency conversion unit 7 is controlled to hot-cut in, and after an interval of 2 seconds, the normal frequency conversion unit 5 is controlled to hot-cut in, thereby gradually replacing the faulty frequency conversion units, realizing stable operation of the long-distance transmission belt in the event of a fault, and avoiding the high cost and complex maintenance caused by starting the belt at full load.

[0032] It should be noted that when each normal frequency conversion unit is hot-cut in, the DC circuit breaker and the outgoing line circuit breaker corresponding to the normal frequency conversion unit are first controlled to be attracted, and then the hot-cut in normal frequency conversion unit is controlled to drive the wave and exchange information, so as to realize the normal operation of the normal frequency conversion unit. Correspondingly, when the faulty frequency conversion unit is cut out, the DC circuit breaker and the outgoing line circuit breaker corresponding to the faulty frequency conversion unit are first controlled to be disconnected, and then the faulty unit is stopped from driving the wave and exchanging information. Moreover, this solution of the present invention is preferably enabled when multiple frequency conversion units fail.

[0033] The long-distance transmission belt stable control method of the present invention can realize the hot cut-out of the faulty frequency conversion unit and the hot cut-in of the normal frequency conversion unit without stopping the machine, greatly shortening the fault processing time and reducing the risk of system operation interruption.

[0034] Optionally, the determining of a number of normal frequency conversion units to be replaced includes: When a faulty frequency conversion unit needs to be switched out, all frequency conversion units in standby state are scanned to determine frequency conversion units in normal working state and with rated parameters closest to the faulty frequency conversion unit, and these frequency conversion units are determined as several normal frequency conversion units for replacement.

[0035] In this embodiment, in the operation system of a long-distance conveyor belt, when a frequency conversion unit is detected to have a fault, such as abnormal current or excessive temperature beyond the safety range, and needs to be cut out, a comprehensive scanning procedure is initiated to check all the frequency conversion units in standby state one by one, and evaluate their working status, giving priority to those frequency conversion units in normal working state.

[0036] At the same time, if the rated parameters of the replacement frequency converter (the rated parameters of the faulty frequency converter may be different from each other) differ too much from the faulty unit, the power output of the belt operation may be unstable after it is connected to the system. For example, if the power of the replacement unit is too large, the belt may accelerate too quickly, causing the belt to shake or even damage; if the power is too small, it may not be able to drive the fully loaded belt, causing transportation to stagnate. In order to ensure that the replacement process is as smooth as possible, there are additional requirements for the normally working frequency converter, that is, its rated parameters must be as close to those of the faulty frequency converter. The rated parameters include but are not limited to rated power, rated current, rated voltage, etc.

[0037] Optionally, the using a belt jitter analysis model to perform jitter prediction analysis on the first load information includes: The first load information is parsed and it is determined whether the cargo center of gravity height information is obtained. If the cargo center of gravity height information is higher than the target threshold, the belt jitter analysis model is used to perform jitter prediction analysis on the first load information. Otherwise, the belt jitter analysis model is not used to perform jitter prediction analysis on the first load information.

[0038] In this embodiment, the above-mentioned embodiment of the present invention adopts a progressive hot cut-in scheme for the normal frequency conversion unit, which can make the frequency conversion unit cut in more smoothly, which is beneficial to reduce the probability of long-distance transmission belts shaking due to sudden power increase. However, the progressive hot cut-in scheme will also cause the speed to slow down during the cut-in process. During the cut-in process, the long-distance transmission belt may experience a significant speed reduction, which will reduce the transmission efficiency on the one hand, and on the other hand, it may cause the goods being transmitted to shake due to the significant speed reduction.

[0039] In this regard, the present invention is configured to first determine whether the cargo center of gravity height information can be parsed from the first load information. When the cargo center of gravity height information is higher than a preset target threshold (for example, large, high-stacked cargo is being transported), the vibration of the belt may cause the cargo to topple over or even fall off the belt, thereby causing damage to the cargo. Therefore, at this time, it is necessary to plan the cut-in plan of the normal frequency conversion unit in advance, and call the belt jitter analysis model to perform a comprehensive jitter prediction analysis on the first load information, so as to screen out the cut-in plan with the smallest jitter possible, which is especially critical when the cargo being transported is relatively valuable.

[0040] If the cargo gravity center height information is not higher than the preset target threshold, that is, the cargo gravity center is in a relatively low and stable state, it indicates that the probability of adverse conditions such as cargo dumping due to belt vibration is low. At this time, all normal frequency conversion units can be directly controlled to cut in together, so that the long-distance transmission belt can restore the transmission power as soon as possible to ensure that the transmission speed is within the predetermined range. At this time, the belt vibration is acceptable. In addition, such a setting can also reduce unnecessary computing resource consumption, allowing the system to handle other key tasks more efficiently.

[0041] Among them, the target threshold can be set to be determined by the number of faulty frequency conversion units and / or the total power. Specifically, when the number of faulty frequency conversion units is larger and / or the total power is higher, the probability of large-scale jitter will be greater if the normal frequency conversion units are cut in together. At this time, the smaller the target threshold is set, the higher the sensitivity of the belt jitter analysis model is set; otherwise, the larger the target threshold is set, the lower the sensitivity of the belt jitter analysis model is set.

[0042] Optionally, the using of the belt jitter analysis model to perform jitter prediction analysis on the first load information to obtain multiple cut-in planning information of a plurality of normal frequency conversion units includes: Obtain the load history of the long-distance transmission belt in a recent period, calculate the average load fluctuation range according to the load history, and determine the target quantity according to the average load fluctuation range; The first rated parameters of each faulty frequency conversion unit, the second rated parameters of each normal frequency conversion unit, the first load information and the target quantity are input into the belt jitter analysis model to obtain multiple entry planning information corresponding to the target quantity analyzed by the belt jitter analysis model.

[0043] In this embodiment, first, the load history record of the long-distance transmission belt in the recent period is obtained, such as within one hour, half an hour, etc. The load history record contains the load fluctuation data of the long-distance transmission belt. The average load fluctuation amplitude can be obtained by statistically analyzing all the load fluctuation data. The average load fluctuation amplitude characterizes the "continuity" of the goods transmitted by the long-distance belt in the recent period. For example, if the goods transmitted are small goods, the average load fluctuation amplitude is very small, and the corresponding "continuity" is high. If the goods transmitted are mixed types of goods, the random switching of large goods and small goods will cause the average load fluctuation amplitude to become larger, and the corresponding "continuity" is low.

[0044] Based on the average load fluctuation range, the target quantity is further determined. Since the larger the average load fluctuation range, the more likely the second load information of the goods subsequently put into the belt for transmission will cause the drive system to overload, the belt jitter analysis model needs to predict more entry planning information at this time to increase the probability of subsequent screening to obtain suitable and available target entry planning information; conversely, the belt jitter analysis model needs to predict fewer entry planning information, which can reduce the calculation load and improve the analysis rate of the model.

[0045] Next, the first rated parameters of each faulty frequency conversion unit (such as the rated power, rated current and other key parameters of the faulty frequency conversion unit), the second rated parameters of each normal frequency conversion unit (also including the rated power, rated current, etc. of the normal frequency conversion unit), the first load information (i.e., detailed information of the existing load on the long-distance transmission belt, such as load weight, distribution, etc.) and the previously determined target quantity are input into the belt jitter analysis model. Under the constraint or guidance of the target quantity, the belt jitter analysis model predicts and outputs multiple entry planning information corresponding to the target quantity.

[0046] The belt jitter analysis model of the present invention is preferably constructed using CNN or Transformer, and the training data of the model is compiled from the measured historical data of the hot cut-in of the normal frequency conversion unit of the long-distance belt transmission system. Typically, the training data includes belt operation status data (belt speed, acceleration), real-time load information (total weight of goods, distribution of goods, such as stacking or uniform distribution), operating parameters of the normal frequency conversion unit in use (output voltage, current, frequency, etc. of each frequency conversion unit), rated parameters of the faulty frequency conversion unit that is cut out (such as the rated power, rated current and other key parameters of the faulty frequency conversion unit), and artificially set or simulated cut-in planning information, and the jitter quality label corresponding to the cut-in planning information. Among them, the jitter quality label is used to characterize the actual measured jitter size when the cut-in planning information is put into use. The smaller the jitter, the better the information represented by the corresponding jitter quality label, and vice versa. The jitter quality label indicates the training direction of the belt jitter analysis model during its training process. The belt vibration analysis model can adopt a conventional local training method. When the training data is insufficient, a distributed training method based on the alliance chain can also be considered. The present invention does not make specific limitations on this.

[0047] In addition, the belt jitter analysis model may include a first model and a second model, the first model is used to generate all possible cut-in planning information, and the second model is used to evaluate each cut-in planning information based on the first rated parameters of each faulty frequency conversion unit, the second rated parameters of each normal frequency conversion unit, and the first load information, and output the top several cut-in planning information with the evaluation results. At this time, the aforementioned training of the belt jitter analysis model is the training of the second model. And, when the second model evaluates each cut-in planning information, the belt operation status data is a default fixed value, which is the belt speed and acceleration of the long-distance transmission belt that are artificially set.

[0048] Optionally, the using the second load information to perform overload analysis on each of the switching planning information to filter and obtain target switching planning information includes: The predicted second load weight to be put on the long-distance transmission belt during the target cut-in period is obtained by parsing the second load information, and an overload analysis is performed on each cut-in sub-period in each cut-in planning information according to the second load weight, the preset transmission completion weight, and the first load weight; wherein the first load weight is obtained by parsing the first load information; The switching planning information with the lowest total overload power in all switching sub-periods is determined as the target switching planning information.

[0049] In this embodiment, another short-distance transmission belt or cargo dumper is arranged at the front end of the long-distance transmission belt, and a weight sensor is arranged under the conveyor belt of the short-distance transmission belt or cargo dumper, so as to obtain the second load weight. Similarly, the first load weight of the long-distance transmission belt can be obtained. The second load weight is the total weight newly transmitted to the long-distance transmission belt during the cut-in period corresponding to the predicted normal frequency conversion units being hot-cut in one by one. The preset transmission completion weight refers to the total weight of the goods on the long-distance transmission belt that are transmitted out of the belt at the other end during this period. The second load weight + the first load weight - the preset transmission completion weight is calculated to obtain the actual total weight of the goods on the long-distance transmission belt during the cut-in period.

[0050] According to the actual total weight of the goods, the total power that the drive system of the long-distance transmission belt needs to provide to maintain the current transmission speed can be calculated, and then the total power is divided by the number of frequency conversion units to obtain the average power. If the average power is higher than the rated power of any frequency conversion unit (the existing frequency conversion unit and the newly cut-in frequency conversion unit), it is determined that the cut-in sub-period corresponding to the cut-in period (the normal cut-in moment of the frequency conversion unit divides the cut-in period into multiple cut-in sub-periods) is overloaded. This cycle is repeated to complete the overload analysis of all cut-in sub-periods in the cut-in period corresponding to each cut-in planning information. Finally, the cut-in planning information with the lowest total overload power of all cut-in sub-periods is determined as the target cut-in planning information.

[0051] The minimum total power of the driving system of the long-distance transmission belt under different operating speeds and total cargo weights can be measured in advance and prepared as reference data. The total power can be determined by querying the reference data according to the actual total cargo weight.

[0052] like Figure 3 As shown, an embodiment of the present invention further discloses a stable control system for a long-distance conveyor belt, the system comprising at least one processor and a memory, the processor calling and executing a computer program code stored in the memory to implement the following steps: When a faulty frequency conversion unit needs to be switched out, determine a number of normal frequency conversion units to replace; Obtain first load information and second load information of a long-distance transmission belt, use a belt jitter analysis model to perform jitter prediction analysis on the first load information, and obtain multiple cut-in planning information of a number of normal frequency conversion units, wherein the cut-in planning information includes a cut-in sequence and a cut-in interval of each normal frequency conversion unit; wherein the first load information is the load information of the existing load on the long-distance transmission belt, and the second load information is the load information of the newly added load on the long-distance transmission belt during the process of cutting in a number of normal frequency conversion units; The second load information is used to perform overload analysis on each of the switching planning information, and target switching planning information is screened to obtain the target switching planning information, and each of the normal frequency conversion units is controlled to be gradually hot-switched in according to the target switching planning information to replace each faulty frequency conversion unit.

[0053] An embodiment of the present invention also discloses an electronic device, comprising: at least one processor, a memory, and a computer program stored in the memory and executable on the at least one processor, wherein the processor is used to execute the computer program to implement a method as described in any of the preceding items.

[0054] An embodiment of the present invention further discloses a computer storage medium, wherein the computer storage medium stores a computer program, and the computer program can be executed by a processor to implement any of the methods described above.

[0055] An embodiment of the present invention further discloses a computer program product, wherein the computer program product includes computer code, and the computer code can be executed by a processor of an electronic device to implement any of the methods described in the preceding items.

[0056] It should be understood by those skilled in the art that the modules or steps of the present invention described above can be implemented by a general-purpose computing device, they can be concentrated on a single computing device, or distributed on a network composed of multiple computing devices, and optionally, they can be implemented by a program code executable by a computing device, so that they can be stored in a storage device and executed by the computing device, or they can be made into individual integrated circuit modules, or multiple modules or steps therein can be made into a single integrated circuit module for implementation. Thus, the present invention is not limited to any specific combination of hardware and software.

[0057] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A stable control method for a long-distance conveyor belt, characterized in that: The method comprises: When a faulty frequency conversion unit needs to be switched out, determine a number of normal frequency conversion units to replace; Obtain first load information and second load information of a long-distance transmission belt, use a belt jitter analysis model to perform jitter prediction analysis on the first load information, and obtain multiple cut-in planning information of a number of normal frequency conversion units, wherein the cut-in planning information includes a cut-in sequence and a cut-in interval of each normal frequency conversion unit; wherein the first load information is the load information of the existing load on the long-distance transmission belt, and the second load information is the load information of the newly added load on the long-distance transmission belt during the process of cutting in a number of normal frequency conversion units; The second load information is used to perform overload analysis on each of the switching planning information, and target switching planning information is screened to obtain the target switching planning information, and each of the normal frequency conversion units is controlled to be gradually hot-switched in according to the target switching planning information to replace each faulty frequency conversion unit.

2. The method for stabilizing a long-distance conveyor belt according to claim 1, characterized in that: The determining of the number of normal frequency conversion units to be replaced includes: When a faulty frequency conversion unit needs to be switched out, all frequency conversion units in standby state are scanned to determine frequency conversion units in normal working state and with rated parameters closest to the faulty frequency conversion unit, and these frequency conversion units are determined as several normal frequency conversion units for replacement.

3. A stable control method for a long distance conveyor belt according to claim 2, characterized in that: The using the belt jitter analysis model to perform jitter prediction analysis on the first load information includes: The first load information is parsed and it is determined whether the cargo center of gravity height information is obtained. If the cargo center of gravity height information is higher than the target threshold, the belt jitter analysis model is used to perform jitter prediction analysis on the first load information. Otherwise, the belt jitter analysis model is not used to perform jitter prediction analysis on the first load information.

4. The method for controlling the stability of a long-distance conveyor belt according to claim 3, characterized in that: The belt jitter analysis model is used to perform jitter prediction analysis on the first load information to obtain multiple cut-in planning information of a number of normal frequency conversion units, including: Obtain the load history of the long-distance transmission belt in a recent period, calculate the average load fluctuation range according to the load history, and determine the target quantity according to the average load fluctuation range; The first rated parameters of each faulty frequency conversion unit, the second rated parameters of each normal frequency conversion unit, the first load information and the target quantity are input into the belt jitter analysis model to obtain multiple entry planning information corresponding to the target quantity analyzed by the belt jitter analysis model.

5. A stable control method for a long-distance conveyor belt according to claim 4, characterized in that: The using the second load information to perform overload analysis on each of the cut-in planning information to filter out target cut-in planning information includes: The predicted second load weight to be put on the long-distance transmission belt during the target cut-in period is obtained by parsing the second load information, and an overload analysis is performed on each cut-in sub-period in each cut-in planning information according to the second load weight, the preset transmission completion weight, and the first load weight; wherein the first load weight is obtained by parsing the first load information; The switching planning information with the lowest total overload power in all switching sub-periods is determined as the target switching planning information.

6. A stable control system for a long-distance conveyor belt, characterized in that: The system includes at least one processor and a memory, wherein the processor calls and executes a computer program code stored in the memory to implement the following steps: When a faulty frequency conversion unit needs to be switched out, determine a number of normal frequency conversion units to replace; Obtain first load information and second load information of a long-distance transmission belt, use a belt jitter analysis model to perform jitter prediction analysis on the first load information, and obtain multiple cut-in planning information of a number of normal frequency conversion units, wherein the cut-in planning information includes a cut-in sequence and a cut-in interval of each normal frequency conversion unit; wherein the first load information is the load information of the existing load on the long-distance transmission belt, and the second load information is the load information of the newly added load on the long-distance transmission belt during the process of cutting in a number of normal frequency conversion units; The second load information is used to perform overload analysis on each of the switching planning information, and target switching planning information is screened to obtain the target switching planning information, and each of the normal frequency conversion units is controlled to be gradually hot-switched in according to the target switching planning information to replace each faulty frequency conversion unit.

7. A long distance conveyor belt stability control system according to claim 6, characterized in that: The determining of the number of normal frequency conversion units to be replaced includes: When a faulty frequency conversion unit needs to be switched out, all frequency conversion units in standby state are scanned to determine frequency conversion units in normal working state and with rated parameters closest to the faulty frequency conversion unit, and these frequency conversion units are determined as several normal frequency conversion units for replacement.

8. An electronic device, characterized in that: include: At least one processor, a memory, and a computer program stored in the memory and executable on the at least one processor, wherein the processor is configured to execute the computer program to implement the method according to any one of claims 1 to 5.

9. A computer storage medium, characterized in that: The computer storage medium stores a computer program, and the computer program can be executed by a processor to implement the method according to any one of claims 1 to 5.

10. A computer program product, characterized in that: The computer program product includes computer codes, and the computer codes can be executed by a processor of an electronic device to implement the method according to any one of claims 1 to 5.

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