Control method and system based on permanent magnetic vacuum combination switch for mine

Abstract

The present invention relates to the field of switch control technology, and in particular to a control method and system based on a permanent magnet vacuum combination switch for mining. The method includes: obtaining a pulse signal set of a pulse power supply system within a target time period, and performing periodic detection on the pulse signal set to determine a pulse signal segment; determining the average duration of multiple pulse signal segments within the target time period, and resampling the duration of pulse signal segments that are different from the average duration to the average duration; for pulse signal segments whose duration is equal to the average duration, determining a target evaluation value according to the difference values ​​of pulse signals at corresponding positions of different pulse signal segments; obtaining the average fault interval duration of the pulse power supply system in a historical time period, and controlling the permanent magnet vacuum combination switch according to the target evaluation value and the average fault interval duration. Through the above technical scheme, it is possible to more conveniently estimate the reliability of the pulse power supply system.

Description

Technical Field

[0001] The present invention relates to the technical field of switch control, and in particular to a control method and system based on a permanent magnetic vacuum combination switch for mining. Background Art

[0002] Permanent magnetic vacuum combination switch is a device used to control and protect circuits in power systems. It combines the dual advantages of permanent magnetic mechanism and vacuum technology, has the characteristics of high reliability, long life, maintenance-free, etc., and is suitable for mines containing explosive gas (methane) and coal dust to ensure the safety of underground power supply.

[0003] The pulse power supply system is a power supply device that can provide short and high-power pulse current. It is widely used in scientific research, industrial production, medical and other fields. It can also be used to activate and operate permanent magnet vacuum combination switches. It can provide enough energy to excite the permanent magnet, thereby achieving the closing and opening of the switch.

[0004] In order to achieve safe control of permanent magnetic vacuum combination switches for mining, it is necessary to monitor the pulse power supply system in real time, so the reliability of the pulse power supply system can be estimated. In the relevant technology, for example, in the Chinese patent application document with publication number CN109117577A, a pulse power supply system reliability prediction method is provided, including: S1, statistical pulse power supply system fault data, determine the task profile experienced by the power pulse system during its life cycle; S2, determine the environmental load surface corresponding to each task profile, and select a suitable fault physical model under the corresponding environmental load surface; S3, calculate the failure rate of the pulse power supply system according to the fault data and the selected fault physical model, and then predict the reliability of the pulse power supply system. The fault data of the pulse power supply system includes one-to-one corresponding potential fault locations, fault modes, fault mechanisms and working stresses; the potential fault locations include metal wiring and solder joints.

[0005] In the relevant technology, it is necessary to determine the environmental load surface corresponding to each mission profile, which includes the temperature load profile, the vibration load profile and the electrical stress load profile, in order to predict the reliability of the pulse power supply system. However, it is difficult to obtain the environmental load surface, so it is difficult to estimate the reliability of the pulse power supply system. Summary of the invention

[0006] In order to overcome the problem of difficulty in estimating the reliability of a pulse power supply system in the related art, in a first aspect, the present invention provides a control method based on a permanent magnet vacuum combination switch for a mine, comprising: obtaining a pulse signal set of a pulse power supply system within a target time period, and performing periodic detection on the pulse signal set to determine periodic pulse signal segments in the pulse signal set; determining the average duration of multiple pulse signal segments within the target time period, and for a target pulse signal segment with a duration different from the average duration among the multiple pulse signal segments, resampling the duration of the target pulse signal segment to the average duration; for a pulse signal segment with a duration equal to the average duration, determining a target evaluation value according to the difference values ​​of pulse signals of different pulse signal segments at corresponding positions, wherein the target evaluation value is used to characterize the degree of difference between different pulse signal segments; obtaining the average fault interval duration of the pulse power supply system in a historical time period, and obtaining the reliability value of the pulse power supply system according to the target evaluation value and the average fault interval duration to control the permanent magnet vacuum combination switch.

[0007] In this way, by obtaining a pulse signal set of the pulse power supply system within the target time period and performing periodic detection on the pulse signal set, the periodic pulse signal segments in the pulse signal set can be determined; according to the differences in the pulse signal segments and the average failure interval duration of the pulse power supply system in the historical time period, the reliability value of the pulse power supply system can be obtained to control the permanent magnet vacuum combination switch. Compared with obtaining the environmental load surface of the pulse power supply system and determining the reliability, it is more convenient to estimate the reliability of the pulse power supply system.

[0008] At the same time, compared with obtaining the environmental load surface of the pulse power system and determining the reliability of the pulse power system, the types of parameters that need to be obtained can be reduced, the difficulty and cost of data acquisition can be reduced, and because the types of parameters that need to be obtained are reduced, the complexity and amount of data processing can also be reduced, thereby reducing the power consumption of the equipment performing the calculation.

[0009] Furthermore, for the pulse signal segments whose duration is equal to the average duration, the target evaluation value is determined according to the difference values ​​of the pulse signals at corresponding positions of different pulse signal segments. The target evaluation value can better characterize the degree of difference between different pulse signal segments, thereby obtaining a more accurate reliability value of the pulse power supply system and better realizing the control of the permanent magnet vacuum combination switch for mining.

[0010] Optionally, determining the target evaluation value based on the difference values ​​of pulse signals at corresponding positions of different pulse signal segments includes: determining a pulse signal segment combination from multiple pulse signal segments having a duration equal to an average duration, the pulse signal segment combination including two pulse signal segments different from each other; determining a difference degree value corresponding to the pulse signal segment combination based on the difference values ​​of pulse signals at corresponding positions of two pulse signal segments in the pulse signal segment combination; determining a target average value of different difference degree values ​​corresponding to different pulse signal segment combinations, and determining the target evaluation value based on the target average value.

[0011] In this way, since the difference degree value can characterize the difference degree between the pulse signal segments in the pulse signal segment combination, the target average values ​​of different difference degree values ​​corresponding to different pulse signal segment combinations are determined, and the target average value can reflect the difference degree between multiple periodic pulse signal segments within the target time period. The target evaluation value determined according to the target average value can reflect the abnormality degree of the pulse power supply system within the target time period, and provide a reference for determining the reliability of the pulse power supply system.

[0012] Optionally, determining the target evaluation value based on the target average value includes: determining a first fluctuation value of the duration of multiple pulse signal segments before resampling; and taking an average of the first fluctuation value and the target average value as the target evaluation value.

[0013] In this way, the average of the first fluctuation value and the target average value is taken as the target evaluation value. Since the first fluctuation value can characterize the fluctuation degree of the duration of multiple pulse signal segments before resampling, the target evaluation value can provide a better reference for estimating the reliability of the pulse power supply system.

[0014] Optionally, the target evaluation value is determined based on the target average value, including: determining the pulse signal average value of the pulse signal segment before resampling; determining a second fluctuation value between different pulse signal average values ​​corresponding to different pulse signals, the second fluctuation value being used to characterize the degree of difference between different pulse signal average values; and taking the average value of the second fluctuation value and the target average value as the target evaluation value.

[0015] In this way, since the second fluctuation value can characterize the fluctuation degree of the pulse signal average value of different pulse signals within the target time period, the average of the second fluctuation value and the target average value is taken as the target evaluation value, and the target evaluation value can better provide a reference for estimating the reliability of the pulse power supply equipment.

[0016] Optionally, the reliability value of the pulse power supply system is obtained based on the target evaluation value and the average fault interval duration to control the permanent magnet vacuum combination switch, including: using an exponential function to perform an exponential operation on the average of the target evaluation value to obtain a first exponential operation value; multiplying the reciprocal of the first exponential operation value by the average fault interval duration to obtain a reliability value; the reliability value is used to characterize the time interval between the current moment and the moment when the pulse power supply system next fails.

[0017] Optionally, performing periodic detection on the pulse signal set to determine periodic pulse signal segments in the pulse signal set includes: obtaining an envelope curve of a pulse signal in a pulse signal set of a pulse power system within a target time period; performing periodic detection on the envelope curve to determine periodic envelope curve segments in the envelope curve; determining the pulse signal segments corresponding to the envelope curve segments in the pulse signal set to determine the periodic pulse signal segments in the pulse signal set.

[0018] In this way, the envelope curve can reflect the amplitude change of the pulse signal. Compared with directly performing period detection on the pulse signal segment, performing period detection on the envelope curve can reduce the difficulty of period detection while effectively determining the period of the pulse signal segment because the amount of data to be compared is smaller.

[0019] Optionally, the average fault interval duration of the pulse power supply system in a historical time period is obtained by: determining the operating time of the pulse power supply system in the historical time period, and determining the number of failures of the pulse power supply system during the operating time; and taking the ratio of the operating time to the number of failures as the average fault interval duration.

[0020] Optionally, the resampling includes upsampling and downsampling, and for a target pulse signal segment among multiple pulse signal segments whose duration is different from the average duration, resampling the duration of the target pulse signal segment to the average duration, including: when the duration of the target pulse signal segment is greater than the average duration, downsampling the target pulse signal segment so that the duration of the downsampled target pulse signal segment is equal to the average duration; when the duration of the target pulse signal segment is less than the average duration, upsampling the target pulse signal segment so that the duration of the upsampled target pulse signal segment is equal to the average duration.

[0021] In a second aspect, the present invention also provides a battery module charge and discharge monitoring system based on data analysis, comprising: a processor; a memory, wherein the memory stores computer program instructions, and when the computer program instructions are executed by the processor, a control method based on a permanent magnet vacuum combination switch for mining as described in one or more of the foregoing embodiments is implemented.

[0022] The beneficial effect of the present invention is to obtain a pulse signal set of a pulse power supply system within a target time period, and perform periodic detection on the pulse signal set to determine the periodic pulse signal segments in the pulse signal set; according to the differences in the pulse signal segments and the average failure interval duration of the pulse power supply system in a historical time period, the reliability value of the pulse power supply system can be obtained to control the permanent magnet vacuum combination switch. Compared with obtaining the environmental load surface of the pulse power supply system and determining the reliability, the reliability estimation of the pulse power supply system can be more conveniently achieved.

[0023] At the same time, compared with obtaining the environmental load surface of the pulse power system and determining the reliability of the pulse power system, the types of parameters that need to be obtained can be reduced, the difficulty and cost of data acquisition can be reduced, and because the types of parameters that need to be obtained are reduced, the complexity and amount of data processing can also be reduced, thereby reducing the power consumption of the equipment performing the calculation.

[0024] Furthermore, for the pulse signal segments whose duration is equal to the average duration, the target evaluation value is determined according to the difference values ​​of the pulse signals at corresponding positions of different pulse signal segments. The target evaluation value can better characterize the degree of difference between different pulse signal segments, thereby obtaining a more accurate reliability value of the pulse power supply system and better realizing the control of the permanent magnet vacuum combination switch for mining.

[0025] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0027] Figure 1 The present invention is a flow chart showing a control method based on a permanent magnet vacuum combination switch for mining according to an exemplary embodiment.

[0028] Figure 2 It is a structural block diagram schematically showing a control system based on a permanent magnetic vacuum combination switch for mining according to this embodiment. DETAILED DESCRIPTION

[0029] Here, exemplary embodiments will be described in detail, and examples thereof are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention.

[0030] First, the application scenario of the embodiment of the present invention is briefly introduced. In the application scenario of the present invention, in order to realize the monitoring of the pulse power supply system, the reliability of the pulse power supply system can be estimated. In the related technology, the reliability of the pulse power supply system is estimated by obtaining environmental load surfaces such as temperature load profile, vibration load profile and electrical stress load profile.

[0031] However, it is difficult to obtain the environmental load surface, and additional sensors are required to obtain the environmental load surface, which increases the cost of estimating the reliability of the pulse power supply system. Therefore, the relevant technology is not convenient for estimating the reliability of the pulse power supply system.

[0032] In response to the above technical problems, an embodiment of the present invention provides a control method based on a permanent magnet vacuum combination switch for mining, by obtaining a pulse signal set of a pulse power supply system within a target time period, and performing periodic detection on the pulse signal set to determine the periodic pulse signal segments in the pulse signal set; according to the differences in the pulse signal segments and the average failure interval duration of the pulse power supply system in a historical time period, the reliability value of the pulse power supply system can be obtained to control the permanent magnet vacuum combination switch. Compared with obtaining the environmental load surface of the pulse power supply system and determining the reliability, it is more convenient to estimate the reliability of the pulse power supply system.

[0033] At the same time, compared with obtaining the environmental load surface of the pulse power system and determining the reliability of the pulse power system, the types of parameters that need to be obtained can be reduced, the difficulty and cost of data acquisition can be reduced, and because the types of parameters that need to be obtained are reduced, the complexity and amount of data processing can also be reduced, thereby reducing the power consumption of the equipment performing the calculation.

[0034] Furthermore, for the pulse signal segments whose duration is equal to the average duration, the target evaluation value is determined according to the difference values ​​of the pulse signals of different pulse signal segments at corresponding positions. The target evaluation value can better characterize the degree of difference between different pulse signal segments, thereby obtaining a more accurate reliability value of the pulse power supply system and better realizing the control of the permanent magnet vacuum combination switch for mining.

[0035] Figure 1 The present invention is a flow chart showing a control method based on a permanent magnet vacuum combination switch for mining according to an exemplary embodiment.

[0036] In step S101, a pulse signal set of a pulse power supply system within a target time period is acquired, and a period detection is performed on the pulse signal set to determine a periodic pulse signal segment in the pulse signal set.

[0037] According to the different output power parameters, the pulse power supply system can be divided into voltage output type pulse power supply and current output type pulse power supply.

[0038] Therefore, corresponding monitoring parameters can be used to monitor the pulse power supply system. For example, the voltage output by a voltage output type pulse power supply can be monitored, or the current output by a current output type pulse power supply can be monitored.

[0039] The pulse signal set includes multiple pulse signals of the pulse power system within the target time period. The pulse signal output by the pulse power system has a certain periodicity. By performing period detection on the pulse signal set, the periodic pulse signal segments in the pulse signal set can be determined.

[0040] When the pulse power supply system outputs pulse signals with a stable pulse period, the durations of multiple pulse segments in the acquired pulse signal set are close to each other, for example, the durations of multiple pulse segments are the same; however, when the operating state of the pulse power supply system fails or is likely to fail, the pulse period of the pulse signal output by the pulse power supply system may fluctuate. Therefore, by determining the periodic pulse signal segments in the pulse signal set, it helps to provide data support for the reliability of the pulse power supply system.

[0041] The period detection of a pulse signal set can be achieved, for example, through autocorrelation function, partial autocorrelation function, spectral density analysis, cyclic autoregressive model and Fourier transform, for example, the pulse signal intensity in the pulse signal set can be converted from the time domain to the frequency domain to determine the periodic pulse signal segments in the pulse signal set. The embodiments of the present invention do not limit the means used for period detection.

[0042] In one embodiment, a pulse signal set is periodically detected to determine periodic pulse signal segments in the pulse signal set, including: obtaining an envelope curve of a pulse signal in a pulse signal set of a pulse power system within a target time period; performing periodic detection on the envelope curve to determine periodic envelope curve segments in the envelope curve; determining a pulse signal segment corresponding to the envelope curve segment in the pulse signal set to determine the periodic pulse signal segment in the pulse signal set.

[0043] The envelope curve of a pulse signal refers to the curve formed by connecting the extreme points in the pulse signal in chronological order. The envelope curve of a pulse signal can reflect the profile of the amplitude of the pulse signal changing over time. The envelope curve of a pulse signal can be obtained by Hilbert transform and smoothing filtering.

[0044] By obtaining the envelope curve of the pulse signal in the pulse signal set of the pulse power supply system within the target time period, the envelope curve in the embodiment of the present invention can reflect the amplitude change of the pulse signal. Compared with directly performing period detection on the pulse signal segment, performing period detection on the envelope curve can reduce the difficulty of period detection while effectively determining the period of the pulse signal segment because the amount of data to be compared is smaller.

[0045] In step S102, the average duration of multiple pulse signal segments within the target time period is determined, and for a target pulse signal segment whose duration is different from the average duration among the multiple pulse signal segments, the duration of the target pulse signal segment is resampled to the average duration.

[0046] By determining the average duration of a plurality of pulse signal segments within the target time period and comparing the duration of the pulse signal segment with the average duration, it is possible to facilitate processing of the plurality of pulse signal segments to the same duration.

[0047] For example, for a voltage-output pulse power supply, due to the different magnitude and duration of the output voltage and the voltage at different times within the pulse cycle, the waveform of the pulse signal within the pulse cycle will present a predetermined shape. In the event that a fault may occur in the pulse power supply system, the amplitude or duration of the pulse signal output by the pulse power supply system may deviate. Therefore, resampling the duration of the target pulse signal segment to an average duration can facilitate determination of the reliability of the pulse power supply system.

[0048] In one embodiment, resampling includes upsampling and downsampling, and for a target pulse signal segment whose duration is different from the average duration among multiple pulse signal segments, the duration of the target pulse signal segment is resampled to the average duration, including: when the duration of the target pulse signal segment is greater than the average duration, downsampling the target pulse signal segment so that the duration of the downsampled target pulse signal segment is equal to the average duration; when the duration of the target pulse signal segment is less than the average duration, upsampling the target pulse signal segment so that the duration of the upsampled target pulse signal segment is equal to the average duration.

[0049] In this way, by resampling the duration of the pulse signal segment to the average duration, it is convenient to analyze the shape of the pulse signal within the same duration, thereby better determining the reliability of the pulse power supply system.

[0050] In step S103, for the pulse signal segments whose duration is equal to the average duration, a target evaluation value is determined according to the difference values ​​of the pulse signals at corresponding positions of different pulse signal segments.

[0051] In the embodiment of the present invention, the target evaluation value is used to characterize the degree of difference between different pulse signal segments. After processing the pulse signal segments of duration and average duration, the durations of multiple pulse signal segments are equal to the average duration.

[0052] For example, the difference value of the pulse signals at corresponding positions of two pulse signal segments can be determined to analyze the degree of difference in signal shape between the two pulse signal segments. By comparing the difference values ​​of the pulse signals at corresponding positions of multiple pulse signals, the degree of difference between the multiple pulse signal segments can be reflected as a whole. Therefore, according to the obtained target evaluation value, the degree of difference between different pulse signal segments can be better characterized.

[0053] In step S104, the average fault interval duration of the pulse power supply system in the historical time period is obtained, and the reliability value of the pulse power supply system is obtained according to the target evaluation value and the average fault interval duration to control the permanent magnet vacuum combination switch.

[0054] Since the target evaluation value obtained can better characterize the degree of difference between different pulse signal segments, and when the reliability of the pulse power supply system is at a high level, for example, when the pulse power supply system has 100% remaining service life, the pulse signals output by the pulse power supply system in different pulse periods are closer, the target evaluation value obtained will be smaller. Therefore, the reliability value of the pulse power supply system can be determined through the target evaluation value and the average failure interval time.

[0055] The reliability value can be used to characterize the time interval between the current moment and the moment when the pulse power supply system next fails. For example, when the time interval between the current moment and the moment when the pulse power supply system next fails is less than or equal to the preset duration, it means that the pulse power supply system will fail in the near future or even cannot be used anymore. In order to ensure the normal use of the equipment provided with the pulse signal by the pulse power supply system, the pulse power supply system can be replaced with a new pulse power supply system; wherein the preset duration can be set according to actual needs, for example, the preset duration can be 10 hours to 24 hours.

[0056] By means of the control method for the permanent magnet vacuum combination switch for mining provided by the embodiment of the present invention, a pulse signal set of the pulse power supply system within the target time period is obtained, and the pulse signal set is periodically detected to determine the periodic pulse signal segments in the pulse signal set; according to the differences in the pulse signal segments and the average fault interval duration of the pulse power supply system in the historical time period, the reliability value of the pulse power supply system can be obtained to control the permanent magnet vacuum combination switch. Compared with obtaining the environmental load surface of the pulse power supply system and determining the reliability, the reliability estimation of the pulse power supply system can be realized more conveniently.

[0057] At the same time, compared with obtaining the environmental load surface of the pulse power system and determining the reliability of the pulse power system, the types of parameters that need to be obtained can be reduced, the difficulty and cost of data acquisition can be reduced, and because the types of parameters that need to be obtained are reduced, the complexity and amount of data processing can also be reduced, thereby reducing the power consumption of the equipment performing the calculation.

[0058] Furthermore, for the pulse signal segments whose duration is equal to the average duration, the target evaluation value is determined according to the difference values ​​of the pulse signals of different pulse signal segments at corresponding positions. The target evaluation value can better characterize the degree of difference between different pulse signal segments, thereby obtaining a more accurate reliability value of the pulse power supply system and better realizing the control of the permanent magnet vacuum combination switch for mining.

[0059] In one embodiment, a target evaluation value is determined based on difference values ​​of pulse signals at corresponding positions of different pulse signal segments, including: determining a pulse signal segment combination from multiple pulse signal segments whose duration is equal to an average duration, the pulse signal segment combination including two pulse signal segments that are different from each other; determining a difference degree value corresponding to the pulse signal segment combination based on difference values ​​of pulse signals at corresponding positions of two pulse signal segments in the pulse signal segment combination; determining a target average value of different difference degree values ​​corresponding to different pulse signal segment combinations, and determining a target evaluation value based on the target average value.

[0060] For example, when the number of different pulse signal segments is 10, if a pulse signal segment combination including two pulse signal segments is selected from the 10 pulse signal segments, 5×9=45 pulse signal segment combinations can be determined.

[0061] According to the difference value of the pulse signals of two pulse signal segments at corresponding positions in the pulse signal segment combination, the difference degree value corresponding to the pulse signal segment combination is determined, and the difference degree value can be used to characterize the difference degree between the two pulse signal segments in the pulse signal segment combination; the difference degree value can, for example, be equal to the average of multiple difference values ​​of pulse signals at different corresponding positions; the difference value of the pulse signals of two pulse signal segments at corresponding positions can be the absolute value of the difference between the pulse signals of the two pulse signal segments at corresponding positions.

[0062] For example, taking the number of data points included in the pulse signal segment as 5, the pulse signal segment combination includes a first pulse signal segment and a second pulse signal segment. The data of each data point in the first pulse signal segment, that is, the pulse signals at different times in the first pulse signal segment are A1, A2, A3, A4 and A5 respectively, and the pulse signals at different times in the second pulse signal segment are B1, B2, B3, B4 and B5 respectively.

[0063] The difference values ​​of the pulse signals of the first pulse signal segment and the second pulse signal segment at the corresponding positions are respectively , , , as well as , the average of these multiple difference values ​​can be used as the difference degree value corresponding to the pulse signal segment combination.

[0064] In this way, since the difference degree value can characterize the difference degree between the pulse signal segments in the pulse signal segment combination, the target average values ​​of different difference degree values ​​corresponding to different pulse signal segment combinations are determined, and the target average value can reflect the difference degree between multiple periodic pulse signal segments within the target time period. The target evaluation value determined according to the target average value can reflect the abnormality degree of the pulse power supply system within the target time period, and provide a reference for determining the reliability of the pulse power supply system.

[0065] The following takes an exemplary calculation formula as an example to explain the process of obtaining the target average values ​​of different difference degree values ​​corresponding to different pulse signal segment combinations in an embodiment of the present invention:

[0066] , where G is the target average value, M is the number of pulse signal segments, i is a positive integer less than M; k is a positive integer less than or equal to M, and k is a positive integer greater than i; N is the number of pulse signals in the pulse signal segment, j is a positive integer less than or equal to N, and norm is the normalization function. is the size of the jth pulse signal in the i-th pulse signal segment, is the magnitude of the jth pulse signal in the kth pulse signal segment, and the normalization function may be a logarithmic function, for example.

[0067] In one embodiment, determining a target evaluation value according to a target average value includes: determining a first fluctuation value of the duration of multiple pulse signal segments before resampling; and taking an average value of the first fluctuation value and the target average value as the target evaluation value.

[0068] The durations of multiple pulse signal segments before resampling may be different. The first fluctuation value of the durations of the multiple pulse signal segments before resampling can be used to characterize the degree of fluctuation of the durations of the multiple pulse signal segments before resampling. The first fluctuation value can be determined based on the variance, standard deviation and range of the durations of the multiple pulse signal segments before resampling.

[0069] In this way, the average of the first fluctuation value and the target average value is taken as the target evaluation value. Since the first fluctuation value can characterize the fluctuation degree of the duration of multiple pulse signal segments before resampling, the target evaluation value can provide a better reference for estimating the reliability of the pulse power supply system.

[0070] In one embodiment, a target evaluation value is determined based on a target average value, including: determining a pulse signal average value of a pulse signal segment before resampling; determining a second fluctuation value between different pulse signal average values ​​corresponding to different pulse signals, the second fluctuation value being used to characterize the degree of difference between different pulse signal average values; and taking the average value of the second fluctuation value and the target average value as the target evaluation value.

[0071] In addition to having a certain periodicity, the amplitude of the pulse signal output by the pulse power supply system also has a certain regularity. For example, when the pulse power supply system outputs a pulse voltage, the average value of the output pulse voltage is the same as the specified average pulse voltage.

[0072] By determining the pulse signal average value of the pulse signal segment before resampling, and determining the second fluctuation value between different pulse signal average values ​​corresponding to different pulse signals, the second fluctuation value can characterize the degree of fluctuation of the pulse signal average values ​​of different pulse signals within the target time period; wherein, the second fluctuation value can be determined based on the variance, standard deviation and range of different pulse signal average values ​​corresponding to different pulse signals.

[0073] In this way, since the second fluctuation value can characterize the fluctuation degree of the pulse signal average value of different pulse signals within the target time period, the average of the second fluctuation value and the target average value is taken as the target evaluation value, and the target evaluation value can better provide a reference for estimating the reliability of the pulse power supply equipment.

[0074] In one embodiment, based on the target evaluation value and the average fault interval duration, a reliability value of a pulse power supply system is obtained to control a permanent magnet vacuum combination switch, including: performing an exponential operation on the average of the target evaluation value using an exponential function to obtain a first exponential operation value; multiplying the reciprocal of the first exponential operation value by the average fault interval duration to obtain a reliability value; the reliability value is used to characterize the time interval between the current moment and the moment when the pulse power supply system next fails.

[0075] The target evaluation value can characterize the probability of abnormality in the pulse power supply system. The higher the probability of abnormality in the pulse power supply at the current moment, the shorter the time interval between the current moment and the next moment when the pulse power supply system fails, and the lower the reliability of the pulse power supply.

[0076] The first exponential operation value is obtained by performing an exponential operation on the average of the target evaluation value, and the reliability value is obtained by multiplying the reciprocal of the first exponential operation value by the average fault interval duration. This can not only realize the normalization processing of the target evaluation value, but also use the obtained reliability value to characterize the time interval between the current moment and the next moment when the pulse power supply system fails.

[0077] In one embodiment, the average fault interval duration of the pulse power supply system in a historical time period is obtained by: determining the operating time of the pulse power supply system in the historical time period, and determining the number of failures of the pulse power supply system during the operating time; and taking the ratio of the operating time to the number of failures as the average fault interval duration.

[0078] Mean Time Between Failures (MTBF) is one of the important indicators for measuring product reliability. It indicates the average length of time a product can work normally between two consecutive failures.

[0079] In this way, by determining the average fault interval, a reference can be provided for determining the reliability of the pulse power supply system at the current moment, thereby facilitating the control of the permanent magnet vacuum combination switch and preventing the occurrence of fault disasters.

[0080] Figure 2 It is a structural block diagram schematically showing a control system based on a permanent magnetic vacuum combination switch for mining according to this embodiment.

[0081] The present invention also provides a control system based on a permanent magnetic vacuum combination switch for mining. Figure 2 As shown, the system includes a processor and a memory, wherein the memory stores computer program instructions, and when the computer program instructions are executed by the processor, a control method based on a permanent magnetic vacuum combination switch for mining is implemented.

[0082] The system also includes other components familiar to those skilled in the art, such as a communication bus and a communication interface, whose configuration and functions are known in the art and thus will not be described in detail here.

[0083] In the present invention, the aforementioned memory may be any tangible medium containing or storing a program that can be used by or in combination with an instruction execution system, apparatus or device. For example, a computer-readable storage medium may be any appropriate magnetic storage medium or magneto-optical storage medium, such as a resistive random access memory RRAM (Resistive Random Access Memory), a dynamic random access memory DRAM (Dynamic Random Access Memory), a static random access memory SRAM (Static Random-Access Memory), an enhanced dynamic random access memory EDRAM (Enhanced Dynamic Random Access Memory), a high-bandwidth memory HBM (High-Bandwidth Memory), a hybrid memory cube HMC (Hybrid Memory Cube), etc., or any other medium that can be used to store the required information and can be accessed by an application, a module, or both. Any such computer storage medium may be part of a device or accessible or connectable to a device. Any application or module described in the present invention may be implemented using computer-readable / executable instructions that may be stored or otherwise maintained by such a computer-readable medium.

[0084] It will be appreciated that the features of the various embodiments of the invention described herein may be combined with each other, unless specifically stated otherwise.

[0085] Although terms such as "first", "second", and "third" may be used herein to describe various components, parts, regions, layers, or sections, these components, parts, regions, layers, or sections are not limited to these terms. Instead, these terms are only used to distinguish one component, part, region, layer, or section from another component, part, region, layer, or section. Therefore, without departing from the teachings of the examples described herein, the first component, part, region, layer, or section mentioned in the examples may also be referred to as the second component, part, region, layer, or section.

[0086] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. The present invention is intended to cover any modification, use or adaptation of the present invention, which follows the general principles of the present invention and includes common knowledge or customary technical means in the art not disclosed by the present invention, and the specification and examples are only to be regarded as exemplary.

[0087] It will be appreciated that the present invention is not limited to the exact construction that has been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof.

Claims

1. A control method based on a permanent magnetic vacuum combination switch for mining, characterized in that: include: Acquire a pulse signal set of a pulse power supply system within a target time period, and perform period detection on the pulse signal set to determine a periodic pulse signal segment in the pulse signal set; Determine an average duration of a plurality of pulse signal segments within a target time period, and for a target pulse signal segment whose duration is different from the average duration among the plurality of pulse signal segments, resample the duration of the target pulse signal segment to the average duration; For a pulse signal segment whose duration is equal to the average duration, determining a target evaluation value according to the difference values ​​of pulse signals at corresponding positions of different pulse signal segments includes: determining a pulse signal segment combination from multiple pulse signal segments whose duration is equal to the average duration, wherein the pulse signal segment combination includes two pulse signal segments that are different from each other; determining a difference degree value corresponding to the pulse signal segment combination according to the difference values ​​of pulse signals at corresponding positions of two pulse signal segments in the pulse signal segment combination; determining a target average value of different difference degree values ​​corresponding to different pulse signal segment combinations, and determining the target evaluation value according to the target average value, wherein the target evaluation value is used to characterize the difference degree between different pulse signal segments; The average fault interval of the pulse power supply system in the historical time period is obtained, and according to the target evaluation value and the average fault interval, the reliability value of the pulse power supply system is obtained to control the permanent magnet vacuum combination switch.

2. The control method based on the mine permanent magnet vacuum combination switch according to claim 1 is characterized in that: Determining the target evaluation value according to the target average value includes: Determine a first fluctuation value of the duration of a plurality of pulse signal segments before resampling; An average value of the first fluctuation value and the target average value is used as the target evaluation value.

3. The control method based on the permanent magnetic vacuum combination switch for mining according to claim 1 is characterized in that: Determining the target evaluation value according to the target average value includes: Determining a pulse signal average value of the pulse signal segment before resampling; Determine a second fluctuation value between average values ​​of different pulse signals corresponding to different pulse signals, wherein the second fluctuation value is used to characterize the degree of difference between the average values ​​of different pulse signals; An average value of the second fluctuation value and the target average value is used as the target evaluation value.

4. The control method based on the mine permanent magnet vacuum combination switch according to claim 1 is characterized in that: The method of obtaining the reliability value of the pulse power supply system according to the target evaluation value and the mean time between failures to control the permanent magnet vacuum combination switch includes: Performing an exponential operation on the average of the target evaluation values ​​using an exponential function to obtain a first exponential operation value; The reciprocal of the first exponential operation value is multiplied by the average fault interval duration to obtain a reliability value; the reliability value is used to characterize the time interval between the current moment and the moment when the pulse power supply system next fails.

5. The control method based on the mine permanent magnet vacuum combination switch according to claim 1 is characterized in that: The performing period detection on the pulse signal set to determine a periodic pulse signal segment in the pulse signal set includes: Obtaining an envelope curve of a pulse signal in a pulse signal set of a pulse power supply system within a target time period; Performing period detection on the envelope curve to determine the periodic envelope curve segments in the envelope curve; The pulse signal segment corresponding to the envelope curve segment in the pulse signal set is determined to determine the periodic pulse signal segment in the pulse signal set.

6. The control method based on the mine permanent magnet vacuum combination switch according to claim 1 is characterized in that: The average fault interval duration of the pulse power supply system in the historical time period is obtained by: Determining the operating time of the pulse power supply system during the historical time period, and determining the number of failures of the pulse power supply system during the operating time; The ratio of the operating time to the number of failures is used as the average failure interval time.

7. The control method based on the permanent magnetic vacuum combination switch for mining according to claim 1 is characterized in that: The resampling includes upsampling and downsampling, and for a target pulse signal segment whose duration is different from the average duration among the plurality of pulse signal segments, resampling the duration of the target pulse signal segment to the average duration includes: When the duration of the target pulse signal segment is greater than the average duration, down-sampling the target pulse signal segment so that the duration of the down-sampled target pulse signal segment is equal to the average duration; In the case that the duration of the target pulse signal segment is less than the average duration, the target pulse signal segment is upsampled so that the duration of the upsampled target pulse signal segment is equal to the average duration.

8. The control system based on the permanent magnetic vacuum combination switch for mining is characterized in that: include: processor; A memory storing computer program instructions, wherein when the computer program instructions are executed by the processor, a control method based on a permanent magnetic vacuum combination switch for mining according to any one of claims 1 to 7 is implemented.

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