Levitation gap measurement method and apparatus, and device and medium

Abstract

A levitation gap measurement method and apparatus, and a device and a medium, which relate to the technical field of rail vehicles. The solution is applied to a distance measurement system, which comprises a first probe group, a second probe group, a back-end processing circuit and a controller, wherein the first probe group is disposed on a surface of an electromagnet which is opposite to a slot structure of a long stator, and the second probe group is disposed on a surface of the electromagnet which is opposite to a tooth structure adjacent to the slot structure of the long stator. In the solution, sensor probes are rationally arranged on the basis of gap fluctuations caused by the tooth and slot structures of the long stator, and the first probe group and the second probe group are provided to form a sensor array. By means of the cooperation between multiple probe groups and by combining two measurement methods for an actual gap value, i.e., gap value averaging and gap value compensation, ripples in levitation gap measurement can be effectively reduced or even eliminated, thereby improving the stability of a levitation control system.

Description

A method, apparatus, equipment and medium for measuring suspension gap

[0001] This application claims priority to Chinese Patent Application No. 202410967047.9, filed on July 18, 2024, entitled "A method, apparatus, device and medium for measuring suspension gap", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of rail vehicle technology, and in particular to a method, apparatus, equipment and medium for measuring suspension gap. Background Technology

[0003] Measuring the levitation gap of high-speed maglev trains is one of the key technologies to ensure stable train operation. The levitation gap refers to the distance between the train and the track, typically around 10mm. To achieve accurate levitation gap measurement, specialized sensors are required.

[0004] Currently, due to the influence of the long stator toothed structure, suspension sensors generate ripple interference when measuring gaps, which adversely affects the stability of the suspension system. To reduce the impact of this toothed ripple, current sensor designs employ three-dimensional coil shape and size optimization measures. However, this also increases the requirements for coil bonding and casting processes, resulting in lower sensor yield, higher production costs, and limitations on the performance and reliability of the suspension system, while also increasing the overall cost of the train.

[0005] Given the above problems, how to solve the gap ripple problem in the measurement of the suspension gap of high-speed maglev trains is an urgent problem for technicians in this field. Summary of the Invention

[0006] The purpose of this application is to provide a method, apparatus, equipment and medium for measuring suspension gap, so as to solve the problem of gap ripple in the process of measuring suspension gap of high-speed maglev trains.

[0007] To address the aforementioned technical problems, this application provides a method for measuring suspension gaps, applied to a ranging system including a first probe group, a second probe group, a back-end processing circuit, and a controller; wherein the first probe group and the second probe group are respectively connected to the corresponding back-end processing circuits; each of the back-end processing circuits is connected to the controller; the first probe group is disposed on the surface of an electromagnet facing the long stator slot structure, and the second probe group is disposed on the surface of an electromagnet facing the tooth structure adjacent to the long stator slot structure; the method includes:

[0008] Obtain the first gap value measured by the first probe group and the second gap value measured by the second probe group, and select the method for determining the actual gap value;

[0009] When the first determination method is selected, the average value of the first gap value and the second gap value is determined, so that the average value is determined as the actual gap value;

[0010] When the second determination method is selected, the minimum value between the first gap value and the second gap value is determined, and the first gap compensation value is obtained;

[0011] The minimum value is summed with the first gap compensation value to obtain the actual gap value.

[0012] On the one hand, the first probe group and the second probe group are each composed of three probes arranged in parallel along the extension direction of the electromagnet;

[0013] Correspondingly, obtaining the first gap value measured by the first probe group includes:

[0014] Obtain the gap value measured by each probe in the first probe group;

[0015] Determine whether there exists a first target gap value among the gap values ​​whose difference from all other gap values ​​is greater than a first threshold;

[0016] If not, then determine the average value of each gap value in the first probe group, and use the average value of each gap value as the first gap value;

[0017] If so, then the probe corresponding to the first target gap value is confirmed as the first faulty probe;

[0018] The first faulty probe is marked, and an alarm message characterizing the fault of the first faulty probe is generated;

[0019] The average value of the gap values ​​measured by the remaining probes in the first probe group other than the first faulty probe is obtained, and the average value of the remaining gap values ​​in the first probe group is used as the first gap value.

[0020] Correspondingly, obtaining the second gap value measured by the second probe group includes:

[0021] Obtain the gap value measured by each probe in the second probe group;

[0022] Determine whether there exists a second target gap value among the gap values ​​whose difference from all other gap values ​​is greater than a first threshold;

[0023] If not, then determine the average value of each gap value in the second probe group, and use the average value of each gap value as the second gap value;

[0024] If so, then the probe corresponding to the second target gap value is confirmed to be the second faulty probe;

[0025] The second faulty probe is marked, and an alarm message characterizing the fault of the second faulty probe is generated;

[0026] The average value of the gap values ​​measured by the remaining probes in the second probe group other than the second faulty probe is obtained, and the average value of the remaining gap values ​​in the second probe group is used as the second gap value.

[0027] On the other hand, the first probe group and the second probe group are each composed of two probes arranged in parallel along the extension direction of the electromagnet;

[0028] Correspondingly, obtaining the first gap value measured by the first probe group includes:

[0029] Obtain the gap value measured by the two probes in the first probe group;

[0030] The average value of the two gap values ​​in the first probe group is determined, and the average value of the two gap values ​​is used as the first gap value;

[0031] Correspondingly, obtaining the second gap value measured by the second probe group includes:

[0032] Obtain the gap value measured by the two probes in the second probe group;

[0033] The average value of the two gap values ​​in the second probe group is determined, and the average value of the two gap values ​​is used as the second gap value.

[0034] On the other hand, after obtaining the gap value measured by the two probes in the first probe group, the method further includes:

[0035] Determine whether the difference between the two gap values ​​is greater than a second threshold;

[0036] If it is not greater than the second threshold, then proceed to the step of determining the average value of the two gap values ​​in the first probe group, so as to use the average value of the two gap values ​​as the first gap value;

[0037] If it is greater than the second threshold, then the larger of the two gap values ​​in the first probe group is determined as the third target gap value;

[0038] The smallest gap value among the two gap values ​​in the first probe group is determined as the fourth target gap value;

[0039] Obtain the gap value measured by the two probes in the second probe group;

[0040] Based on the gap values ​​measured by the two probes in the second probe group, determine whether the gap value of the third target and the gap value of the fourth target are within the first preset range;

[0041] If the third target gap value is within the first preset range, then it is confirmed that the probe corresponding to the fourth target gap value has malfunctioned;

[0042] The probe corresponding to the fourth target gap value is marked, and an alarm message indicating that the probe corresponding to the fourth target gap value has failed is generated;

[0043] The third target gap value is used as the first gap value;

[0044] If the fourth target gap value is within the first preset range, then it is confirmed that the probe corresponding to the third target gap value has malfunctioned;

[0045] The probe corresponding to the third target gap value is marked, and an alarm message indicating that the probe corresponding to the third target gap value has failed is generated;

[0046] The fourth target gap value is used as the first gap value.

[0047] On the other hand, after obtaining the first gap value measured by the first probe group and the second gap value measured by the second probe group, and before selecting the method for determining the actual gap value, the method further includes:

[0048] Obtain the second gap compensation value;

[0049] Determine whether the difference between the first gap value and the second gap value is greater than a third threshold;

[0050] If the difference between the first gap value and the second gap value is greater than the third threshold, then the second gap value and the second gap compensation value are summed to obtain a new first gap value, and the process proceeds to the step of determining the method for selecting the actual gap value.

[0051] If the difference between the first gap value and the second gap value is not greater than the third threshold, then determine whether the difference between the second gap value and the first gap value is greater than the third threshold.

[0052] If the difference between the second gap value and the first gap value is greater than the third threshold, then the first gap value and the second gap compensation value are summed to obtain a new second gap value, and the process proceeds to the step of determining the method for selecting the actual gap value.

[0053] If the difference between the second gap value and the first gap value is not greater than the third threshold, then proceed to the step of determining the actual gap value.

[0054] On the other hand, it also includes:

[0055] The actual gap value is monitored according to a preset cycle, and the current speed of the train is also monitored.

[0056] Determine whether the actual gap value exceeds the second preset range and whether the current speed of the train is greater than the speed threshold;

[0057] If so, output an alarm message.

[0058] On the other hand, when the actual gap value exceeds the second preset range and the current speed of the train is greater than the speed threshold, the following also applies:

[0059] Record the current distances of the first probe group and the second probe group relative to the long stator;

[0060] Generate a measurement log; wherein the measurement log contains information on the changes in the actual gap value within a preset time period before the actual gap value exceeds the second preset range.

[0061] To address the aforementioned technical problems, this application also provides a suspension gap measuring device, applied to a ranging system including a first probe group, a second probe group, a back-end processing circuit, and a controller; wherein the first probe group and the second probe group are respectively connected to the corresponding back-end processing circuit; each of the back-end processing circuits is connected to the controller; the first probe group is disposed on the surface of an electromagnet facing the long stator slot structure, and the second probe group is disposed on the surface of an electromagnet facing the tooth structure adjacent to the long stator slot structure; the device includes:

[0062] The acquisition module is used to acquire the first gap value measured by the first probe group and the second gap value measured by the second probe group, and select the method for determining the actual gap value;

[0063] The first determining module is used to determine the average value of the first gap value and the second gap value when the first determining method is selected, so as to determine the average value as the actual gap value;

[0064] The second determining module is used to determine the minimum value between the first gap value and the second gap value when the second determining method is selected, and to obtain the first gap compensation value.

[0065] The summation module is used to sum the minimum value with the first gap compensation value to obtain the actual gap value.

[0066] To address the aforementioned technical problems, this application also provides a suspension gap measuring device, comprising:

[0067] Memory, used to store computer programs;

[0068] A processor is used to implement the steps of the above-described suspension gap measurement method when executing the computer program.

[0069] To address the aforementioned technical problems, this application also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the steps of the aforementioned suspension gap measurement method.

[0070] The suspension gap measurement method provided in this application is applied to a ranging system including a first probe group, a second probe group, a back-end processing circuit, and a controller. The first and second probe groups are respectively connected to their corresponding back-end processing circuits; each back-end processing circuit is connected to the controller. The first probe group is positioned on the surface of an electromagnet facing the long stator slot structure, and the second probe group is positioned on the surface of an electromagnet facing the tooth structure adjacent to the long stator slot structure. Specifically, the method involves acquiring a first gap value measured by the first probe group and a second gap value measured by the second probe group, and selecting a method for determining the actual gap value. When the first method is selected, the average value of the first and second gap values ​​is determined, and this average value is used as the actual gap value. When the second method is selected, the minimum value between the first and second gap values ​​is determined, and a first gap compensation value is obtained. The minimum value is summed with the first gap compensation value to obtain the actual gap value. Therefore, the above scheme rationally arranges the sensor probes based on the gap fluctuations caused by the tooth structure of the long stator, setting the first and second probe groups to form a sensor array. By using multiple probe groups in combination with two methods of measuring actual gap values—averaging and compensating for gap values—it is possible to effectively reduce or even eliminate ripple in suspension gap measurement and improve the stability of the suspension control system.

[0071] In addition, this application also provides a suspension gap measuring device, equipment and medium, with the same effect as above. Attached Figure Description

[0072] To more clearly illustrate the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0073] Figure 1 is a schematic diagram of the probe assembly installation position provided in an embodiment of this application;

[0074] Figure 2 is a flowchart of a suspension gap measurement method provided in an embodiment of this application;

[0075] Figure 3 is a schematic diagram of a probe installation method provided in an embodiment of this application;

[0076] Figure 4 is a schematic diagram of another probe installation method provided in the embodiments of this application;

[0077] Figure 5 is a schematic diagram of a suspension gap measuring device provided in an embodiment of this application;

[0078] Figure 6 is a schematic diagram of a suspension gap measuring device provided in an embodiment of this application.

[0079] Among them, 5 is the long stator, 6 is the electromagnet, 7 is the first probe group, and 8 is the second probe group. Detailed Implementation

[0080] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this application.

[0081] The core of this application is to provide a method, device, equipment, and medium for measuring suspension gap, so as to solve the problem of gap ripple in the process of measuring suspension gap of high-speed maglev trains.

[0082] To enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0083] To address the issue of gap ripple during the measurement of suspension gap in high-speed maglev trains, this application provides a method for measuring suspension gap.

[0084] It should be noted that the method provided in this application is applied to a ranging system including a first probe group, a second probe group, a back-end processing circuit, and a controller. The detection principle of the first and second probe groups is inductive ranging. Specifically, each probe group consists of multiple coil probes. As the gap between the electromagnet and the long stator fluctuates, the probes detect changes in inductance. Next, the first and second probe groups are respectively connected to their corresponding back-end processing circuits, and each back-end processing circuit is connected to the controller. The back-end processing circuit acquires the changes in inductance transmitted by the first and second probe groups, obtains the corresponding gap value, and sends the detected gap value to the controller according to the protocol between the back-end processing circuit and the controller.

[0085] Figure 1 is a schematic diagram of the probe assembly installation position provided in an embodiment of this application. As shown in Figure 1, in this application, the first probe assembly 7 is disposed on the surface of the electromagnet 6 opposite to the long stator 5 slot structure, and the second probe assembly 8 is disposed on the surface of the electromagnet 6 opposite to the tooth structure adjacent to the long stator 5 slot structure. It should be noted that the specific structure of the first probe assembly and the second probe assembly is not limited in this embodiment, and depends on the specific implementation.

[0086] Figure 2 is a flowchart of a suspension gap measurement method provided in an embodiment of this application. As shown in Figure 2, the method includes:

[0087] S10: Obtain the first gap value measured by the first probe group and the second gap value measured by the second probe group, and select the method for determining the actual gap value.

[0088] S11: When the first determination method is selected, the average value of the first gap value and the second gap value is determined so that the average value is determined as the actual gap value.

[0089] S12: When the second determination method is selected, determine the minimum value between the first gap value and the second gap value, and obtain the first gap compensation value.

[0090] S13: Add the minimum value to the first gap compensation value to obtain the actual gap value.

[0091] In practice, the first gap value measured by the first probe group and the second gap value measured by the second probe group are obtained. It is understood that because the first and second probe groups are positioned differently, the gap values ​​measured by them cannot be directly used as the actual gap value. To obtain the actual gap value between the long stator and the electromagnet, a method for determining the actual gap value needs to be selected.

[0092] It should be noted that this embodiment provides two methods for determining the actual gap value, both of which can eliminate ripple interference during the actual gap value measurement process.

[0093] Specifically, when the first determination method is selected, the average of the first gap value and the second gap value is determined, and the average value is used as the actual gap value. When the second determination method is selected, the minimum value between the first gap value and the second gap value is determined, and a first gap compensation value is obtained; the minimum value is added to the first gap compensation value to obtain the actual gap value. It should be noted that in this embodiment, the specific size of the first gap compensation value is not limited, and it depends on the specific implementation.

[0094] In addition, there is a feasible way to eliminate ripple: by constructing a gap ripple processing model, the model input is set to the gap value measured by the first probe group, the gap value measured by the second probe group, and the standard gap between the long stator and the electromagnet, and the model output is set to the actual gap value; with the specified ripple as the constraint / target value, sample data is obtained through ground experiments, and machine learning algorithms (such as extreme gradient boosting algorithm, random forest algorithm, Bayesian statistics, etc.) are used to train the model to obtain the final gap ripple processing model, which is then applied to the ranging system.

[0095] In this embodiment, the sensor probes are rationally arranged based on the gap fluctuations caused by the toothed structure of the long stator, forming a sensor array with a first probe group and a second probe group. By coordinating multiple probe groups and combining two actual gap value measurement methods—averaging the gap value and compensating for the gap value—the ripples present in the suspension gap measurement can be effectively reduced or even eliminated, thus improving the stability of the suspension control system.

[0096] Figure 3 is a schematic diagram of a probe installation method provided in an embodiment of this application. Based on the above embodiments, in some embodiments, as shown in Figure 3, the first probe group and the second probe group are each composed of three probes arranged in parallel along the extension direction of the electromagnet.

[0097] Correspondingly, under the probe installation method of the first probe group described above, obtaining the first gap value measured by the first probe group includes:

[0098] S101: Obtain the gap value measured by each probe in the first probe group;

[0099] S102: Determine whether there is a first target gap value among the gap values ​​whose difference from the other gap values ​​is greater than the first threshold; if not, proceed to step S103; if yes, proceed to step S104.

[0100] S103: Determine the average value of each gap value in the first probe group, and use the average value of each gap value as the first gap value.

[0101] S104: Confirm that the probe corresponding to the first target gap value is the first faulty probe.

[0102] S105: Mark the first faulty probe and generate alarm information characterizing the fault of the first faulty probe.

[0103] S106: Obtain the average value of the gap values ​​measured by the remaining probes in the first probe group other than the first faulty probe, and use the average value of the remaining gap values ​​in the first probe group as the first gap value.

[0104] To obtain the first gap value, the gap values ​​measured by each probe in the first probe group are first obtained, that is, the gap values ​​measured by the three probes are obtained. Further, it is determined whether there exists a first target gap value whose difference from all other gap values ​​is greater than a first threshold. In this embodiment, the size of the first threshold is not limited and depends on the specific implementation.

[0105] If there is no first target gap value whose difference from the other gap values ​​is greater than the first threshold, then the deviation of the three gap values ​​is considered to be within the allowable range. Then the average value of each gap value in the first probe group is determined, and the average value of the three gap values ​​is used as the first gap value.

[0106] If a first target gap value exists where the difference between it and all other gap values ​​is greater than the first threshold, then the first target gap value measured by one of the three probes is considered to deviate significantly from the gap values ​​measured by the other two probes, and the probe corresponding to the first target gap value is identified as the first faulty probe. At this point, the first faulty probe is marked, and an alarm message characterizing the fault is generated, allowing staff to maintain the first faulty probe based on the marking and alarm message. The average gap value measured by the remaining probes in the first probe group (excluding the first faulty probe) is obtained, which is the average gap value of the remaining two probes. This average of the remaining gap values ​​in the first probe group is used as the first gap value, thereby improving the accuracy of the first gap value measurement.

[0107] Correspondingly, under the probe installation method of the second probe group described above, obtaining the second gap value measured by the second probe group includes:

[0108] S107: Obtain the gap values ​​measured by each probe in the second probe group.

[0109] S108: Determine whether there is a second target gap value among the gap values ​​whose difference from the other gap values ​​is greater than the first threshold; if not, proceed to step S109; if yes, proceed to step S110.

[0110] S109: Determine the average value of each gap value in the second probe group, and use the average value of each gap value as the second gap value;

[0111] S110: Confirm that the probe corresponding to the second target gap value is the second faulty probe.

[0112] S111: Mark the second faulty probe and generate alarm information characterizing the fault of the second faulty probe.

[0113] S112: Obtain the average value of the gap values ​​measured by the remaining probes in the second probe group other than the second faulty probe, and use the average value of the remaining gap values ​​in the second probe group as the second gap value.

[0114] To obtain the second gap value, the gap values ​​measured by each probe in the second probe group are first obtained, that is, the gap values ​​measured by the three probes are obtained. Further, it is determined whether there exists a second target gap value whose difference from all other gap values ​​is greater than a first threshold. In this embodiment, the size of the first threshold is not limited and depends on the specific implementation.

[0115] If there is no second target gap value whose difference from the other gap values ​​is greater than the first threshold, then the deviation of the three gap values ​​is considered to be within the allowable range. Then the average value of each gap value in the second probe group is determined, and the average value of the three gap values ​​is used as the second gap value.

[0116] If a second target gap value exists whose difference from all other gap values ​​is greater than the first threshold, then the second target gap value measured by one of the three probes is considered to deviate significantly from the gap values ​​measured by the other two probes, and the probe corresponding to the second target gap value is identified as the second faulty probe. At this time, the second faulty probe is marked, and an alarm message characterizing the fault is generated, allowing staff to maintain the second faulty probe based on the marking and alarm information. The average gap value measured by the remaining probes in the second probe group (excluding the second faulty probe) is obtained, which is the average gap value of the remaining two probes. This average of the remaining gap values ​​in the second probe group is used as the second gap value, thereby improving the accuracy of the second gap value measurement.

[0117] Figure 4 is a schematic diagram of another probe installation method provided in an embodiment of this application. Based on the above embodiments, in some embodiments, as shown in Figure 4, the first probe group and the second probe group are each composed of two probes arranged in parallel along the extension direction of the electromagnet.

[0118] Correspondingly, under the probe installation method of the first probe group described above, obtaining the first gap value measured by the first probe group includes:

[0119] S111: Obtain the gap value measured by the two probes in the first probe group.

[0120] S112: Determine the average value of the two gap values ​​in the first probe group, and use the average value of the two gap values ​​as the first gap value.

[0121] To obtain the first gap value, the gap values ​​measured by the two probes in the first probe group are first obtained, and then the average value of the two gap values ​​in the first probe group is determined, so that the average value of the two gap values ​​is used as the first gap value.

[0122] Correspondingly, under the probe installation method of the second probe group described above, obtaining the second gap value measured by the second probe group includes:

[0123] S113: Obtain the gap value measured by the two probes in the second probe group.

[0124] S114: Determine the average value of the two gap values ​​in the second probe group, and use the average value of the two gap values ​​as the second gap value.

[0125] To obtain the second gap value, the gap values ​​measured by the two probes in the second probe group are first obtained, and then the average value of the two gap values ​​in the second probe group is determined, so that the average value of the two gap values ​​is used as the second gap value.

[0126] Based on the above embodiments, in some embodiments, after obtaining the gap value measured by the two probes in the first probe group, the method further includes:

[0127] S121: Determine whether the difference between the two gap values ​​is greater than the second threshold; if it is not greater than the second threshold, proceed to step S112; if it is greater than the second threshold, proceed to step S122.

[0128] S122: Determine the larger gap value among the two gap values ​​in the first probe group as the third target gap value.

[0129] S123: Determine the smallest gap value among the two gap values ​​in the first probe group as the fourth target gap value.

[0130] S124: Obtain the gap value measured by the two probes in the second probe group.

[0131] S125: Based on the gap values ​​measured by the two probes in the second probe group, determine whether the gap values ​​of the third target and the fourth target are within the first preset range; if the gap value of the third target is within the first preset range, proceed to step S126. If the gap value of the fourth target is within the first preset range, proceed to step S129.

[0132] S126: Confirm that the probe corresponding to the fourth target gap value has malfunctioned.

[0133] S127: Mark the probe corresponding to the fourth target gap value and generate an alarm message indicating that the probe corresponding to the fourth target gap value has failed.

[0134] S128: Use the third target gap value as the first gap value.

[0135] S129: Confirm that the probe corresponding to the third target gap value has malfunctioned.

[0136] S130: Mark the probe corresponding to the third target gap value and generate an alarm message indicating that the probe corresponding to the third target gap value has failed.

[0137] S131: Use the fourth target gap value as the first gap value.

[0138] In practical implementation, when the first probe group uses two probes, the average gap value of the two probes is used as the first gap value. If one probe malfunctions, the corresponding gap value will deviate significantly, leading to inaccurate measurement of the first gap value. Therefore, to avoid this situation, after obtaining the gap values ​​measured by the two probes in the first probe group, it is necessary to determine whether the difference between the two gap values ​​is greater than a second threshold. In this embodiment, the size of the second threshold is not limited and depends on the specific implementation.

[0139] If the deviation is not greater than the second threshold, it is confirmed that the difference between the gap values ​​measured by the two probes is within the allowable range, and the process proceeds to the step of determining the average value of the two gap values ​​in the first probe group, using the average value of the two gap values ​​as the first gap value. If the deviation is greater than the second threshold, it is confirmed that the deviation between the gap values ​​measured by the two probes exceeds the limit, which will lead to inaccurate measurement of the first gap value.

[0140] To avoid inaccurate measurement of the first gap value, the larger gap value among the two gap values ​​in the first probe group is specifically determined as the third target gap value; the smaller gap value among the two gap values ​​in the first probe group is determined as the fourth target gap value. The gap values ​​measured by the two probes in the second probe group are obtained. Using the gap values ​​measured by the second probe group as a comparison, the third and fourth target gap values ​​are determined to be within a first preset range based on the gap values ​​measured by the two probes in the second probe group. In this embodiment, the first preset range is not limited; it needs to be determined based on the gap values ​​measured by the two probes in the second probe group. Gap values ​​within the first preset range are considered normal gap values.

[0141] If the third target gap value is within the first preset range, it is considered a relatively normal measurement value, while the fourth target gap value is considered an abnormal measurement value. The third target gap value can then be used as the first gap value. At this point, it is confirmed that the probe corresponding to the fourth target gap value has malfunctioned. The probe corresponding to the fourth target gap value is further marked, and an alarm message indicating that the probe corresponding to the fourth target gap value has malfunctioned is generated. This allows staff to maintain the probe corresponding to the fourth target gap value based on the marking and alarm message. This ensures the accurate measurement of the first gap value.

[0142] Furthermore, this embodiment primarily describes the accurate measurement of the first gap value when two probes are used in the first probe group. It is understood that the method used in this embodiment is also applicable to the measurement of the second gap value when two probes are used in the second probe group, thus ensuring the accuracy of the second gap value measurement. However, it should be noted that, unlike this embodiment which uses the second probe group as the comparison object, when measuring the second gap value under the second probe group, the gap value measured by the first probe group needs to be used as the comparison object. The specific process will not be elaborated in this embodiment.

[0143] Based on the above embodiments, after obtaining the first gap value measured by the first probe group and the second gap value measured by the second probe group, and before selecting the method for determining the actual gap value, the method further includes:

[0144] S132: Obtain the second gap compensation value.

[0145] S133: Determine whether the difference between the first gap value and the second gap value is greater than the third threshold; if the difference between the first gap value and the second gap value is greater than the third threshold, proceed to step S134; if the difference between the first gap value and the second gap value is not greater than the third threshold, proceed to step S135.

[0146] S134: Sum the second gap value with the second gap compensation value to obtain a new first gap value, and proceed to the step of determining the method for selecting the actual gap value;

[0147] S135: Determine whether the difference between the second gap value and the first gap value is greater than the third threshold; if the difference between the second gap value and the first gap value is greater than the third threshold, proceed to step S136; if the difference between the second gap value and the first gap value is not greater than the third threshold, proceed to the step of determining the method of selecting the actual gap value.

[0148] S136: Sum the first gap value and the second gap compensation value to obtain a new second gap value, and proceed to the step of determining the method for selecting the actual gap value.

[0149] In practice, when the levitation train passes through the beam end joint, the first and second gap values ​​will be much larger than the actual gap value, causing the actual gap value measurement to fail. Therefore, to ensure accurate measurement of the actual gap value, a specific second gap compensation value is obtained. This embodiment does not impose any restrictions on the second gap compensation value; it depends on the specific implementation situation.

[0150] The next step is to determine whether the difference between the first gap value and the second gap value is greater than a third threshold. If the difference is greater than the third threshold, the first gap value is considered to be an incorrect value measured at the seam. To avoid the measurement failure of the actual gap value due to an incorrect first gap value, the second gap value is summed with the second gap compensation value to obtain a new first gap value. This leads to the step of selecting the method for determining the actual gap value, and subsequent calculation of the actual gap value is performed.

[0151] If the difference between the first gap value and the second gap value is not greater than the third threshold, the first gap value is considered correct. Further checks are then performed to determine if the difference between the second gap value and the first gap value is greater than the third threshold. If the difference is greater than the third threshold, the second gap value is considered an incorrect value measured at the seam. To prevent an incorrect second gap value from causing measurement failure of the actual gap value, the first gap value and the second gap compensation value are summed to obtain a new second gap value. This leads to the step of selecting the method for determining the actual gap value, and subsequent calculations of the actual gap value are performed. If the difference between the second gap value and the first gap value is not greater than the third threshold, both the first and second gap values ​​are considered correct, and the step of selecting the method for determining the actual gap value continues.

[0152] This ensures that the measurement of the actual gap value is not affected when the train passes through the beam end joint.

[0153] Based on the above embodiments, some embodiments further include:

[0154] S14: Monitor the actual gap value according to the preset cycle, and monitor the current speed of the train;

[0155] S15: Determine whether the actual gap value exceeds the second preset range and whether the current speed of the train is greater than the speed threshold; if so, proceed to step S16.

[0156] S16: Output alarm information.

[0157] In practice, the actual gap value obtained from the measurement can be continuously monitored according to a preset cycle, while the current speed of the train can also be monitored. Further determination can be made as to whether the actual gap value exceeds a second preset range and whether the current speed of the train is greater than a speed threshold. In this embodiment, neither the second preset range nor the speed threshold is limited; it depends on the specific implementation situation.

[0158] If the actual clearance value does not exceed the second preset range and / or the train's current speed is not greater than the speed threshold, monitoring continues. If the actual clearance value exceeds the second preset range and the train's current speed is greater than the speed threshold, it is considered that the clearance is abnormal at the train's current speed, and continued operation may pose a safety risk. An alarm message needs to be output to prompt staff to slow down the train and conduct an inspection.

[0159] In addition, to improve the efficiency of staff inspections, when the actual gap value exceeds the second preset range and the train's current speed is greater than the speed threshold, the following also applies:

[0160] S17: Record the current distance between the first and second probe groups and the long stator.

[0161] S18: Generate a measurement log; wherein the measurement log contains information on the changes in the actual gap value within a preset time period before the actual gap value exceeds the second preset range.

[0162] Specifically, to improve the efficiency of staff inspections, it is also necessary to record the current distances of the first and second probe groups relative to the long stator, so that staff can check for abnormal gap values. Simultaneously, a measurement log is generated; the measurement log includes the changes in the actual gap value within a preset time period before the actual gap value exceeds the second preset range, so that staff can investigate gap changes based on the measurement log.

[0163] In the above embodiments, the suspension gap measurement method has been described in detail. This application also provides embodiments of the suspension gap measurement device.

[0164] Figure 5 is a schematic diagram of a suspension gap measuring device provided in an embodiment of this application. The device is applied to a ranging system including a first probe group, a second probe group, a back-end processing circuit, and a controller; wherein, the first probe group and the second probe group are respectively connected to their corresponding back-end processing circuits; each back-end processing circuit is connected to the controller; the first probe group is disposed on the surface of the electromagnet facing the long stator slot structure, and the second probe group is disposed on the surface of the electromagnet facing the tooth structure adjacent to the long stator slot structure; as shown in Figure 5. The device includes:

[0165] The acquisition module 10 is used to acquire the first gap value measured by the first probe group and the second gap value measured by the second probe group, and to select the method for determining the actual gap value;

[0166] The first determining module 11 is used to determine the average value of the first gap value and the second gap value when the first determining method is selected, so as to determine the average value as the actual gap value;

[0167] The second determining module 12 is used to determine the minimum value between the first gap value and the second gap value when the second determining method is selected, and to obtain the first gap compensation value.

[0168] The summing module 13 is used to sum the minimum value with the first gap compensation value to obtain the actual gap value.

[0169] In some embodiments, the first probe group and the second probe group each consist of three probes arranged in parallel along the extension direction of the electromagnet;

[0170] Correspondingly, module 10 includes:

[0171] The first acquisition submodule is used to acquire the gap values ​​measured by each probe in the first probe group;

[0172] The first judgment submodule is used to determine whether there is a first target gap value among the gap values ​​whose difference from the other gap values ​​is greater than the first threshold; if not, the first determination submodule is triggered; if so, the first confirmation submodule is triggered.

[0173] The first determining submodule is used to determine the average value of each gap value in the first probe group, so as to use the average value of each gap value as the first gap value;

[0174] The first confirmation submodule is used to confirm that the probe corresponding to the first target gap value is the first faulty probe.

[0175] The first marking alarm submodule is used to mark the first fault probe and generate alarm information characterizing the fault of the first fault probe;

[0176] The second acquisition submodule is used to acquire the average value of the gap values ​​measured by the remaining probes in the first probe group other than the first faulty probe, so as to use the average value of the remaining gap values ​​in the first probe group as the first gap value.

[0177] Correspondingly, the acquisition module 10 also includes:

[0178] The third acquisition submodule is used to acquire the gap values ​​measured by each probe in the second probe group;

[0179] The second judgment submodule is used to determine whether there is a second target gap value among the gap values ​​whose difference from the other gap values ​​is greater than the first threshold; if not, the second determination submodule is triggered; if so, the second confirmation submodule is triggered.

[0180] The second determining submodule is used to determine the average value of each gap value in the second probe group, so as to use the average value of each gap value as the second gap value;

[0181] The second confirmation submodule is used to confirm that the probe corresponding to the second target gap value is the second faulty probe.

[0182] The second marking alarm submodule is used to mark the second fault probe and generate alarm information characterizing the fault of the second fault probe;

[0183] The fourth acquisition submodule is used to acquire the average value of the gap values ​​measured by the remaining probes in the second probe group other than the second faulty probe, so as to use the average value of the remaining gap values ​​in the second probe group as the second gap value.

[0184] In some embodiments, the first probe group and the second probe group each consist of two probes arranged in parallel along the extension direction of the electromagnet;

[0185] Correspondingly, module 10 includes:

[0186] The fifth acquisition submodule is used to acquire the gap value measured by the two probes in the first probe group;

[0187] The third determining submodule is used to determine the average value of the two gap values ​​in the first probe group, so as to use the average value of the two gap values ​​as the first gap value;

[0188] Correspondingly, the acquisition module 10 also includes:

[0189] The sixth acquisition submodule is used to acquire the gap value measured by the two probes in the second probe group;

[0190] The fourth determination submodule is used to determine the average value of the two gap values ​​in the second probe group, so as to use the average value of the two gap values ​​as the second gap value.

[0191] In some embodiments, it also includes:

[0192] The third judgment submodule is used to determine whether the difference between the two gap values ​​is greater than the second threshold; if it is not greater than the second threshold, the third determination submodule is triggered; if it is greater than the second threshold, the fifth determination submodule is triggered.

[0193] The fifth determination submodule is used to determine the largest gap value among the two gap values ​​in the first probe group as the third target gap value;

[0194] The sixth determination submodule is used to determine the smallest gap value among the two gap values ​​in the first probe group as the fourth target gap value;

[0195] The seventh acquisition submodule is used to acquire the gap value measured by the two probes in the second probe group;

[0196] The fourth judgment submodule is used to determine whether the gap values ​​of the third target and the fourth target are within the first preset range based on the gap values ​​measured by the two probes in the second probe group; if the gap value of the third target is within the first preset range, the third confirmation submodule is triggered; if the gap value of the fourth target is within the first preset range, the fourth confirmation submodule is triggered.

[0197] The third confirmation submodule is used to confirm that the probe corresponding to the fourth target gap value has malfunctioned.

[0198] The third marking alarm submodule is used to mark the probe corresponding to the fourth target gap value and generate alarm information indicating that the probe corresponding to the fourth target gap value has failed.

[0199] The first processing submodule is used to take the third target gap value as the first gap value;

[0200] The fourth confirmation submodule is used to confirm that the probe corresponding to the third target gap value has malfunctioned;

[0201] The fourth marking alarm submodule is used to mark the probe corresponding to the third target gap value and generate alarm information indicating that the probe corresponding to the third target gap value has failed.

[0202] The second processing submodule is used to take the fourth target gap value as the first gap value.

[0203] In some embodiments, it also includes:

[0204] The eighth acquisition submodule is used to acquire the second gap compensation value;

[0205] The fifth judgment submodule is used to determine whether the difference between the first gap value and the second gap value is greater than the third threshold; if the difference between the first gap value and the second gap value is greater than the third threshold, the third processing submodule is triggered; if the difference between the first gap value and the second gap value is not greater than the third threshold, the sixth judgment submodule is triggered.

[0206] The third processing submodule is used to sum the second gap value and the second gap compensation value to obtain a new first gap value, and then proceed to the step of determining the method for selecting the actual gap value.

[0207] The sixth judgment submodule is used to determine whether the difference between the second gap value and the first gap value is greater than the third threshold; if the difference between the second gap value and the first gap value is greater than the third threshold, the fourth processing submodule is triggered; if the difference between the second gap value and the first gap value is not greater than the third threshold, the step of determining the method of selecting the actual gap value is entered.

[0208] The fourth processing submodule is used to sum the first gap value and the second gap compensation value to obtain a new second gap value, and then proceed to the step of determining the method for selecting the actual gap value.

[0209] In some embodiments, it also includes:

[0210] The monitoring submodule is used to monitor the actual gap value according to a preset cycle and to monitor the current speed of the train;

[0211] The seventh judgment submodule is used to determine whether the actual gap value exceeds the second preset range and whether the current speed of the train is greater than the speed threshold; if so, the alarm submodule is triggered.

[0212] The alarm submodule is used to output alarm information.

[0213] In some embodiments, it also includes:

[0214] The recording module is used to record the current distances of the first and second probe groups relative to the long stator.

[0215] The log generation module is used to generate measurement logs; wherein, the measurement logs contain the changes in the actual gap value within a preset time period before the actual gap value exceeds the second preset range.

[0216] Since the embodiments of the apparatus and the embodiments of the method correspond to each other, please refer to the description of the embodiments of the method for the embodiments of the apparatus, which will not be repeated here.

[0217] Figure 6 is a schematic diagram of a suspension gap measuring device provided in an embodiment of this application. As shown in Figure 6, the suspension gap measuring device includes:

[0218] Memory 20 is used to store computer programs.

[0219] The processor 21 is used to execute a computer program to implement the steps of the suspension gap measurement method mentioned in the above embodiments.

[0220] The suspension gap measuring device provided in this embodiment may include, but is not limited to, smartphones, tablets, laptops, or desktop computers.

[0221] The processor 21 may include one or more processing cores, such as a quad-core processor or an octa-core processor. The processor 21 may be implemented using at least one of the following hardware forms: Digital Signal Processor (DSP), Field-Programmable Gate Array (FPGA), and Programmable Logic Array (PLA). The processor 21 may also include a main processor and a coprocessor. The main processor, also known as the Central Processing Unit (CPU), is used to process data in the wake-up state; the coprocessor is a low-power processor used to process data in the standby state. In some embodiments, the processor 21 may integrate a Graphics Processing Unit (GPU), which is responsible for rendering and drawing the content to be displayed on the screen. In some embodiments, the processor 21 may also include an Artificial Intelligence (AI) processor, which handles computational operations related to machine learning.

[0222] The memory 20 may include one or more computer-readable storage media, which may be non-transitory. The memory 20 may also include high-speed random access memory and non-volatile memory, such as one or more disk storage devices or flash memory devices. In this embodiment, the memory 20 is used to store at least the following computer program 201, which, after being loaded and executed by the processor 21, is capable of implementing the relevant steps of the suspension gap measurement method disclosed in any of the foregoing embodiments. In addition, the resources stored in the memory 20 may also include an operating system 202 and data 203, and the storage method may be temporary or permanent storage. The operating system 202 may include Windows, Unix, Linux, etc. The data 203 may include, but is not limited to, the data involved in the suspension gap measurement method.

[0223] In some embodiments, the suspension gap measuring device may further include a display screen 22, an input / output interface 23, a communication interface 24, a power supply 25, and a communication bus 26.

[0224] Those skilled in the art will understand that the structure shown in Figure 6 does not constitute a limitation on the suspension gap measuring device and may include more or fewer components than shown.

[0225] Finally, this application also provides an embodiment corresponding to a computer-readable storage medium. The computer-readable storage medium stores a computer program, which, when executed by a processor, implements the steps described in the above method embodiments.

[0226] It is understood that if the methods in the above embodiments are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and executes all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0227] The foregoing provides a detailed description of a suspension gap measurement method, apparatus, device, and medium. The various embodiments in the specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to in the method section. It should be noted that those skilled in the art can make several improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of this application.

[0228] It should also be noted that, in this specification, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A method of suspended gap measurement, characterized by, The application is applied to a ranging system comprising a first probe group, a second probe group, a backend processing circuit and a controller; wherein the first probe group and the second probe group are respectively connected with the corresponding backend processing circuit; each of the backend processing circuits is connected with the controller; the first probe group is arranged on the surface of an electromagnet opposite to a long stator slot structure, and the second probe group is arranged on the surface of an electromagnet opposite to a tooth structure adjacent to the long stator slot structure; the method comprises: acquiring a first gap value measured by the first probe group and a second gap value measured by the second probe group, and selecting a determination mode of an actual gap value; when the first determination mode is selected, determining the average value of the first gap value and the second gap value, and determining the average value as the actual gap value; when the second determination mode is selected, determining the minimum value of the first gap value and the second gap value, and acquiring a first gap compensation value; adding the minimum value and the first gap compensation value to obtain the actual gap value.

2. The suspended gap measurement method of claim 1, wherein, The first probe group and the second probe group are respectively composed of three probes arranged in parallel along the extension direction of the electromagnet; correspondingly, acquiring the first gap value measured by the first probe group comprises: acquiring the gap values measured by each probe in the first probe group; determining whether there is a first target gap value in each of the gap values, whose difference from the remaining gap values is greater than a first threshold value; if not, determining the average value of each of the gap values in the first probe group, and taking the average value of each of the gap values as the first gap value; if yes, confirming that the probe corresponding to the first target gap value is a first faulty probe; marking the first faulty probe and generating alarm information representing the failure of the first faulty probe; acquiring the average value of the gap values measured by the remaining probes in the first probe group except the first faulty probe, and taking the average value of the remaining gap values in the first probe group as the first gap value; correspondingly, acquiring the second gap value measured by the second probe group comprises: acquiring the gap values measured by each probe in the second probe group; determining whether there is a second target gap value in each of the gap values, whose difference from the remaining gap values is greater than a first threshold value; if not, determining the average value of each of the gap values in the second probe group, and taking the average value of each of the gap values as the second gap value; if yes, confirming that the probe corresponding to the second target gap value is a second faulty probe; marking the second faulty probe and generating alarm information representing the failure of the second faulty probe; acquiring the average value of the gap values measured by the remaining probes in the second probe group except the second faulty probe, and taking the average value of the remaining gap values in the second probe group as the second gap value.

3. The suspended gap measurement method of claim 1, wherein, The first probe group and the second probe group are respectively composed of two probes arranged in parallel along the extension direction of the electromagnet; correspondingly, acquiring the first gap value measured by the first probe group comprises: acquiring the gap values measured by two probes in the first probe group; determining an average of the two gap values in the first probe group, so that the average of the two gap values is taken as the first gap value; correspondingly, obtaining the second gap value measured by the second probe group, comprising: obtaining the gap values measured by the two probes in the second probe group; determining an average of the two gap values in the second probe group, so that the average of the two gap values is taken as the second gap value.

4. The suspended gap measurement method of claim 3, wherein, after the step of obtaining the gap values measured by the two probes in the first probe group, further comprising: determining whether the difference between the two gap values is greater than a second threshold value; if the difference between the two gap values is not greater than the second threshold value, entering the step of determining an average of the two gap values in the first probe group, so that the average of the two gap values is taken as the first gap value; if the difference between the two gap values is greater than the second threshold value, determining the maximum gap value of the two gap values in the first probe group as a third target gap value; determining the minimum gap value of the two gap values in the first probe group as a fourth target gap value; obtaining the gap values measured by the two probes in the second probe group; determining whether the third target gap value and the fourth target gap value are within a first preset range according to the gap values measured by the two probes in the second probe group, respectively; if the third target gap value is within the first preset range, confirming that the probe corresponding to the fourth target gap value fails; marking the probe corresponding to the fourth target gap value, and generating alarm information representing that the probe corresponding to the fourth target gap value fails; taking the third target gap value as the first gap value; if the fourth target gap value is within the first preset range, confirming that the probe corresponding to the third target gap value fails; marking the probe corresponding to the third target gap value, and generating alarm information representing that the probe corresponding to the third target gap value fails; taking the fourth target gap value as the first gap value.

5. The suspended gap measurement method of claim 1, wherein, after the step of obtaining the first gap value measured by the first probe group and the second gap value measured by the second probe group, before the step of selecting the determination mode of the actual gap value, further comprising: obtaining a second gap compensation value; determining whether the difference between the first gap value and the second gap value is greater than a third threshold value; if the difference between the first gap value and the second gap value is greater than the third threshold value, adding the second gap value and the second gap compensation value to obtain a new first gap value, and entering the step of selecting the determination mode of the actual gap value; if the difference between the first gap value and the second gap value is not greater than the third threshold value, determining whether the difference between the second gap value and the first gap value is greater than the third threshold value; if the difference between the second gap value and the first gap value is greater than the third threshold value, adding the first gap value and the second gap compensation value to obtain a new second gap value, and entering the step of selecting the determination mode of the actual gap value; If the difference between the second gap value and the first gap value is not greater than the third threshold value, entering the step of selecting the determination mode of the actual gap value.

6. The suspended-gap measurement method according to any one of claims 1 to 5, characterized in that, Further comprising: Monitoring the actual gap value according to a preset period, and monitoring the current speed of the train; Determining whether the actual gap value is out of a second preset range and the current speed of the train is greater than a speed threshold value; If yes, outputting an alarm information.

7. The suspended gap measurement method of claim 6, wherein, When the actual gap value is out of the second preset range and the current speed of the train is greater than the speed threshold value, further comprising: Recording the distance of the first probe group and the second probe group relative to the long stator; Generating a measurement log; wherein the measurement log contains the change of the actual gap value in a preset time period before the actual gap value is out of the second preset range.

8. A suspended gap measuring device characterized by, Applied to a distance measuring system comprising a first probe group, a second probe group, a backend processing circuit and a controller; wherein the first probe group and the second probe group are connected with corresponding backend processing circuits respectively; each backend processing circuit is connected with the controller; the first probe group is arranged on the surface of an electromagnet opposite to a long stator slot structure, and the second probe group is arranged on the surface of an electromagnet opposite to a tooth structure adjacent to the long stator slot structure; the device comprises: An acquisition module, configured to acquire a first gap value measured by the first probe group and a second gap value measured by the second probe group, and select a determination mode of the actual gap value; A first determination module, configured to, when the first determination mode is selected, determine the average value of the first gap value and the second gap value, and determine the average value as the actual gap value; A second determination module, configured to, when the second determination mode is selected, determine the minimum value of the first gap value and the second gap value, and acquire a first gap compensation value; An adding module, configured to add the minimum value and the first gap compensation value to obtain the actual gap value.

9. A suspended gap measuring device characterized by, Comprise: A memory, configured to store a computer program; A processor, configured to execute the computer program to realize the steps of the suspension gap measurement method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, The computer readable storage medium stores a computer program, and the computer program is executed by the processor to realize the steps of the suspension gap measurement method according to any one of claims 1 to 7.

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