Two-dimensional gap measurement method, device and system and computer equipment

Abstract

The invention relates to a two-dimensional gap measurement method, device and system and computer equipment. Two sides of the two-dimensional gap are respectively provided with a magnetic core, at least one magnetic core is provided with a horizontal coil, at least one magnetic core is provided with a vertical coil, and a first inductance value of the horizontal coil and a second inductance value of the vertical coil are obtained; determining a horizontal distance of the two-dimensional gap based on the first inductance value and a first relationship, wherein the first relationship comprises a corresponding relationship between the inductance value of the horizontal coil and the horizontal distance; and determining the vertical distance of the two-dimensional gap based on the first inductance value, the second inductance value and a second relationship, wherein the second relationship comprises a corresponding relationship among the inductance value of the horizontal coil, the inductance value of the vertical coil and the vertical distance. The horizontal distance and the numerical distance of the two-dimensional gap can be determined by obtaining the inductance values of the horizontal coil and the vertical coil, the two-dimensional gap can be conveniently measured, installation is easy, the application range is wide, and the measurement requirements of most two-dimensional gaps can be met.

Description

Technical Field

[0001] The present application relates to the field of gap detection technology, and in particular to a two-dimensional gap measurement method, device, system and computer equipment. Background Art

[0002] The gap sensor can accurately measure the gap between surfaces in a non-contact manner. The gap measurement technology is also widely used in the measurement of hatch gap, shaft displacement, shaft eccentricity, shaft cracks and shaft wear of large rotating machinery such as steam turbines, water turbines, gear boxes and cooling pumps.

[0003] In traditional gap measurement technology, displacement sensors are usually one-dimensional displacement sensors, which cannot meet the measurement requirements of two-dimensional gaps. For example, when a hatch is opened or closed, there are large opening displacements and slipping displacements. One-dimensional sensors in traditional technology are difficult to detect displacement outside the two-dimensional surface and perform two-dimensional gap measurement.

[0004] Based on this, a measurement method capable of detecting two-dimensional gaps is urgently needed in traditional technology. Summary of the invention

[0005] Based on this, it is necessary to provide a two-dimensional gap measurement method, device, system and computer equipment capable of detecting a two-dimensional gap in response to the above technical problems.

[0006] In a first aspect, the present application provides a two-dimensional gap measurement method. Magnetic cores are respectively arranged on both sides of the two-dimensional gap, wherein at least one magnetic core is arranged with a horizontal coil, and at least one magnetic core is arranged with a vertical coil, and the method comprises:

[0007] Acquire a first inductance value of the horizontal coil and a second inductance value of the vertical coil;

[0008] determining a horizontal distance of the two-dimensional gap based on the first inductance value and a first relationship, wherein the first relationship includes a corresponding relationship between the inductance value of the horizontal coil and the horizontal distance;

[0009] The vertical distance of the two-dimensional gap is determined based on the first inductance value, the second inductance value, and a second relationship, wherein the second relationship includes a corresponding relationship between the inductance value of the horizontal coil, the inductance value of the vertical coil, and the vertical distance.

[0010] In one embodiment, before obtaining the first inductance value of the horizontal coil and the second inductance value of the vertical coil, the method further includes:

[0011] Acquire first position information and first test inductance values ​​of at least two positions of the horizontal coil in the horizontal direction, and determine a first test relationship between the first test inductance value and the horizontal distance based on the first position information and the first test inductance value;

[0012] Acquire second position information and second test inductance values ​​of at least two positions of the horizontal coil in the vertical direction, and determine a second test relationship between the second test inductance value and the vertical distance based on the second position information and the second test inductance value;

[0013] Based on the first test relationship and the second test relationship, the first relationship is determined.

[0014] In one embodiment, before obtaining the first inductance value of the horizontal coil and the second inductance value of the vertical coil, the method further includes:

[0015] Acquire third position information and third test inductance values ​​of at least two positions of the vertical coil in the horizontal direction, and determine a third test relationship between the third test inductance value and the horizontal distance based on the third position information and the third test inductance value;

[0016] Acquire fourth position information and a fourth test inductance value of at least two positions of the vertical coil in the vertical direction, and determine a fourth test relationship between the fourth test inductance value and the vertical distance based on the fourth position information and the fourth test inductance value;

[0017] The second relationship is determined based on the first relationship, the third test relationship, and the fourth test relationship.

[0018] In one of the embodiments, the magnetic permeability of the two magnetic cores is not less than 1000.

[0019] In one of the embodiments, the sizes of the two magnetic cores are determined based on a preset measurement threshold of the two-dimensional gap.

[0020] In a second aspect, the present application further provides a two-dimensional gap measurement device. Magnetic cores are respectively arranged on both sides of the two-dimensional gap, wherein at least one magnetic core is provided with a horizontal coil, and at least one magnetic core is provided with a vertical coil, and the device comprises:

[0021] An inductance acquisition module, used to acquire a first inductance value of the horizontal coil and a second inductance value of the vertical coil;

[0022] a horizontal distance determination module, configured to determine the horizontal distance of the two-dimensional gap based on the first inductance value and a first relationship, wherein the first relationship includes a corresponding relationship between the inductance value of the horizontal coil and the horizontal distance;

[0023] A vertical distance determination module is used to determine the vertical distance of the two-dimensional gap based on the first inductance value, the second inductance value and a second relationship, wherein the second relationship includes a correspondence between the inductance value of the horizontal coil, the inductance value of the vertical coil and the vertical distance.

[0024] In a third aspect, the present application further provides a two-dimensional gap measurement system, the system comprising a two-dimensional gap sensor, an inductance acquisition module and a data processor, wherein:

[0025] The two-dimensional gap sensor comprises magnetic cores respectively arranged on both sides of the two-dimensional gap, wherein at least one magnetic core is provided with a horizontal coil, and at least one magnetic core is provided with a vertical coil;

[0026] The inductance acquisition module is connected to the horizontal coil and the vertical coil respectively, and is used to obtain a first inductance value of the horizontal coil and a second inductance value of the vertical coil;

[0027] The data processor is connected to the inductance acquisition module, and is used to receive the first inductance value and the second inductance value, and determine the horizontal distance of the two-dimensional gap based on the first inductance value and a first relationship, and determine the vertical distance of the two-dimensional gap based on the first inductance value, the second inductance value and the second relationship, wherein the first relationship includes the corresponding relationship between the inductance value of the horizontal coil and the horizontal distance, and the second relationship includes the corresponding relationship between the inductance value of the horizontal coil, the inductance value of the vertical coil and the vertical distance.

[0028] In one embodiment, the two-dimensional gap sensor includes at least two two-dimensional gap sub-sensors, the inductance acquisition module includes the same number of inductance acquisition units as the two-dimensional gap sub-sensors, each inductance acquisition unit is connected to the sub-horizontal coil and the sub-vertical coil of the corresponding two-dimensional gap sub-sensor, and the system further includes a hub, which is connected to each of the inductance acquisition units and the data processor, wherein:

[0029] The hub is used to receive the first inductance values ​​of all sub-horizontal coils and the second inductance values ​​of all sub-vertical coils sent by the two-dimensional gap sensor and convert them into digital inductance values ​​and send them to the data processor;

[0030] The data processor is further configured to determine a horizontal distance and a vertical distance of a two-dimensional gap corresponding to each two-dimensional gap sub-sensor based on the digital inductance.

[0031] In a fourth aspect, the present application further provides a computer device, wherein the computer device comprises a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the steps of any two-dimensional gap measurement method in the first aspect are implemented.

[0032] In a fifth aspect, the present application further provides a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the steps of any two-dimensional gap measurement method in the first aspect are implemented.

[0033] The above-mentioned two-dimensional gap measurement method, device, system and computer equipment are provided with magnetic cores on both sides of the two-dimensional gap, wherein at least one magnetic core is provided with a horizontal coil, and at least one magnetic core is provided with a vertical coil, by obtaining the first inductance value of the horizontal coil and the second inductance value of the vertical coil; based on the first inductance value and the first relationship, the horizontal distance of the two-dimensional gap is determined, and the first relationship includes the corresponding relationship between the inductance value of the horizontal coil and the horizontal distance; based on the first inductance value, the second inductance value and the second relationship, the vertical distance of the two-dimensional gap is determined, and the second relationship includes the corresponding relationship between the inductance value of the horizontal coil, the inductance value of the vertical coil and the vertical distance. By providing magnetic cores on both sides of the two-dimensional gap, and at least one magnetic core is provided with a horizontal coil, and at least one magnetic core is provided with a vertical coil, the horizontal distance and numerical distance of the two-dimensional gap can be determined by obtaining the inductance values ​​of the horizontal coil and the vertical coil, and the two-dimensional gap can be measured more conveniently, and the installation is simple, the application range is wide, and the measurement requirements of most two-dimensional gaps can be met.

[0034] Details of one or more embodiments of the present application are set forth in the following drawings and description to make other features, objects, and advantages of the present application more readily apparent. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0036] Figure 1 is a schematic diagram of a two-dimensional gap measurement system in one embodiment;

[0037] Figure 2 is a schematic diagram of a two-dimensional gap sensor in one embodiment;

[0038] Figure 3 is a schematic diagram of a two-dimensional gap sensor in another embodiment;

[0039] Figure 4is a schematic diagram of a two-dimensional gap measurement system in a specific embodiment;

[0040] Figure 5 A schematic diagram of a two-dimensional gap measurement method according to an embodiment;

[0041] Figure 6 A schematic diagram of testing the relationship between inductance value and position information in one embodiment;

[0042] Figure 7 is a schematic diagram of the relationship between inductance and relative magnetic permeability in one embodiment;

[0043] Figure 8 is a schematic diagram of the relationship between the 5-year inductance degradation rate and the relative magnetic permeability in one embodiment;

[0044] Fig. 9 is a structural block diagram of a two-dimensional gap measurement device in one embodiment;

[0045] Fig.10 FIG. 4 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0047] Unless otherwise defined, the technical terms or scientific terms involved in this application shall have the general meaning understood by people with ordinary skills in the technical field to which this application belongs. The words "one", "a", "a", "the", "these" and the like in this application do not represent quantitative restrictions, and they can be singular or plural. The terms "include", "comprise", "have" and any variants thereof involved in this application are intended to cover non-exclusive inclusions; for example, a process, method and system, product or device comprising a series of steps or modules (units) is not limited to the listed steps or modules (units), but may include unlisted steps or modules (units), or may include other steps or modules (units) inherent to these processes, methods, products or devices. The words "connect", "connected", "coupled" and the like involved in this application are not limited to physical or mechanical connections, but may include electrical connections, whether directly or indirectly. The "multiple" involved in this application refers to two or more. "And / or" describes the association relationship of associated objects, indicating that there can be three relationships. For example, "A and / or B" can mean: A exists alone, A and B exist at the same time, and B exists alone. Usually, the character " / " indicates that the objects associated with each other are in an "or" relationship. The terms "first", "second", "third", etc. involved in this application are only used to distinguish similar objects and do not represent a specific ordering of the objects.

[0048] The terms "module", "unit", etc. used below are a combination of software and / or hardware that can implement a predetermined function. Although the devices described in the following embodiments are preferably implemented in hardware, the implementation of software, or a combination of software and hardware is also possible and conceivable.

[0049] The two-dimensional gap measurement method provided in the embodiment of the present application can be applied to Figure 1 In the two-dimensional gap measurement system shown in the figure. The system includes a two-dimensional gap sensor, an inductance acquisition module and a data processor, wherein: Figure 2 and Figure 3 The schematic diagrams of the structures of two types of two-dimensional gap sensors are given as examples, respectively, including magnetic cores respectively arranged on both sides of the two-dimensional gap, wherein a horizontal coil and a vertical coil are arranged on one side of the magnetic core. It can be understood that Figure 2 and Figure 3Only two coil setting methods are given as examples. In addition, a horizontal coil can be set on one side of the magnetic core, a vertical coil can be set on the other side of the magnetic core, or both horizontal coils and vertical coils can be set on the two sides of the magnetic core. The present application does not limit the specific setting method of the coil. The inductance acquisition module is connected to the horizontal coil and the vertical coil respectively, and is used to obtain the first inductance value of the horizontal coil and the second inductance value of the vertical coil; the data processor is connected to the inductance acquisition module, and is used to receive the first inductance value and the second inductance value, and determine the horizontal distance of the two-dimensional gap based on the first inductance value and the first relationship, and determine the vertical distance of the two-dimensional gap based on the first inductance value, the second inductance value and the second relationship, wherein the first relationship includes the corresponding relationship between the inductance value of the horizontal coil and the horizontal distance, and the second relationship includes the corresponding relationship between the inductance value of the horizontal coil, the inductance value of the vertical coil and the vertical distance.

[0050] In some embodiments, the two-dimensional gap sensor includes at least two two-dimensional gap sub-sensors, the inductance acquisition module includes the same number of inductance acquisition units as the two-dimensional gap sub-sensors, each inductance acquisition unit is connected to the sub-horizontal coil and the sub-vertical coil of the corresponding two-dimensional gap sub-sensor, and the system also includes a hub, which is connected to each of the inductance acquisition units and the data processor, wherein the hub is used to receive the first inductance values ​​of all sub-horizontal coils and the second inductance values ​​of all sub-vertical coils sent by the two-dimensional gap sensor and convert them into inductance digital quantities and send them to the data processor; the data processor is also used to determine the horizontal distance and vertical distance of the two-dimensional gap corresponding to each two-dimensional gap sub-sensor based on the inductance digital quantity.

[0051] In some specific embodiments, the inductance collection unit may be a flexible distributed inductance collection unit, which may specifically include: Figure 1 The collectors 1, 2, ..., and N shown in the figure each include at least one induction head, which can be used to collect the inductance values ​​of the sub-horizontal coils and sub-vertical coils of the corresponding two-dimensional gap sub-sensors. The inductance acquisition module may include a power supply unit, an inductance acquisition unit LDC, a microcontroller MCU, etc. The hub may include a power supply module, an Ethernet interface, a 485 interface, a USB interface, and a processing module, and the hub may support a 5-way bus or a data exchange rate of 10Mbps. In some embodiments, as Figure 1As shown, the two-dimensional gap measurement system may also include a switch, a main collector, a control signal collector and a loading control system, the switch is connected to the hub, the data processor and the control signal collector respectively, the main collector is connected to the data processor, and the loading control system is connected to the control signal collector. The hub can use Ethernet to interconnect with the switch for data interaction. The data processor may include a data receiving module, a data processing and analysis module, and a digital-to-analog conversion module, which can convert the received inductance value into a displacement digital quantity, and convert the displacement digital quantity into an analog quantity and send it to the main collector.

[0052] In some specific embodiments, a two-dimensional gap measurement system such as Figure 4 As shown. Each inductance acquisition unit is connected to a two-dimensional gap sub-sensor, and sends the collected inductance value to the hub unit through a data power supply bus. In some embodiments, the hub may include multiple hub units, each of which may be connected to multiple acquisition units to collect data from multiple groups of acquisition units. The hub unit sends the inductance value to the data processor through the switch based on Ethernet, and the data processor obtains the two-dimensional gap measurement result after processing the data and sends it to the data acquisition system. The loading control system can send corresponding control instructions to the control signal collector, and the control signal collector can control the data processor to perform corresponding operations through the switch based on the control instructions.

[0053] In the present application embodiment, Figure 5 As shown, a two-dimensional gap measurement method is provided, which is applied to Figure 1 The two-dimensional gap measurement system in the embodiment of the present invention is described, wherein magnetic cores are respectively arranged on both sides of the two-dimensional gap, wherein at least one magnetic core is arranged with a horizontal coil, and at least one magnetic core is arranged with a vertical coil, and the method comprises:

[0054] S201: Acquire a first inductance value of the horizontal coil and a second inductance value of the vertical coil.

[0055] S203: Determine a horizontal distance of the two-dimensional gap based on the first inductance value and a first relationship, where the first relationship includes a corresponding relationship between the inductance value of the horizontal coil and the horizontal distance.

[0056] S205: Determine a vertical distance of the two-dimensional gap based on the first inductance value, the second inductance value, and a second relationship, wherein the second relationship includes a corresponding relationship between the inductance value of the horizontal coil, the inductance value of the vertical coil, and the vertical distance.

[0057] In the embodiment of the present application, the direction of the two-dimensional gap is parallel to the ground, the direction of the horizontal distance of the two-dimensional gap is parallel to the ground, and the direction of the vertical distance of the two-dimensional gap is perpendicular to the ground. In some embodiments, the horizontal distance of the two-dimensional gap may include the two-dimensional gap distance in the direction of mutual projection of the two magnetic cores, and the projection direction is parallel to the ground. In some specific embodiments, such as Figure 2 and Figure 3 As shown, two different embodiments of the horizontal coil and the vertical coil are exemplarily provided. The two sides of the two-dimensional gap are provided with magnetic cores, wherein the horizontal coil and the vertical coil are provided on one side of the magnetic core. It can be understood that Figure 2 and Figure 3 The setting method of the two coils is only given as an example. In addition, a horizontal coil can be set on one side of the magnetic core, a vertical coil can be set on the other side of the magnetic core, or both horizontal coils and vertical coils can be set on the magnetic cores on both sides. The present application does not limit the specific setting method of the coils. The two-dimensional gap measurement may include measuring the horizontal distance and vertical distance of the two-dimensional gap. The horizontal distance may include the two-dimensional gap distance in the direction of mutual projection of the two magnetic cores, and the vertical distance may include the two-dimensional gap distance in the direction perpendicular to the ground. In some embodiments, the horizontal coil may include a coil wound on the magnetic core in a horizontal direction; the vertical coil may include a coil wound on the magnetic core in a vertical direction.

[0058] It is understandable that when the two-dimensional gap distance changes, the relative distance between the two magnetic cores also changes, and the relative distance between the horizontal coil and the vertical coil and the other core also changes, and then the inductance of the horizontal coil and the vertical coil may also change. Therefore, after determining the relationship between the change in the inductance value of the horizontal coil and the vertical coil and the change in the gap distance, the horizontal distance and numerical distance of the two-dimensional gap can be determined by measuring the inductance value of the horizontal coil and the vertical coil.

[0059] In an embodiment of the present application, after determining the first relationship between the inductance value of the horizontal coil and the horizontal distance, and after determining the second relationship between the inductance value of the horizontal coil, the inductance value of the vertical coil, and the vertical distance, the first inductance value of the horizontal coil and the second inductance value of the vertical coil can be obtained, and the horizontal distance of the two-dimensional gap can be determined based on the first inductance value and the first relationship, and the vertical distance of the two-dimensional gap can be determined based on the first inductance value, the second inductance value, and the second relationship, to obtain a measurement result of the two-dimensional gap.

[0060] The embodiment of the present application arranges magnetic cores on both sides of the two-dimensional gap, and at least one magnetic core is provided with a horizontal coil, and at least one magnetic core is provided with a vertical coil. By obtaining the inductance values ​​of the horizontal coil and the vertical coil, the horizontal distance and numerical distance of the two-dimensional gap can be determined. The two-dimensional gap can be measured more conveniently, and the installation is simple, the application range is wide, and it can meet the measurement requirements of most two-dimensional gaps.

[0061] The following is an explanation of the steps of determining the first relationship and the second relationship through an embodiment of the present application. In some embodiments, before obtaining the first inductance value of the horizontal coil and the second inductance value of the vertical coil, the method further includes:

[0062] S301: Acquire first position information and a first test inductance value of at least two positions of the horizontal coil in the horizontal direction, and determine a first test relationship between the first test inductance value and the horizontal distance based on the first position information and the first test inductance value.

[0063] S303: Acquire second position information and second test inductance values ​​of at least two positions of the horizontal coil in the vertical direction, and determine a second test relationship between the second test inductance value and the vertical distance based on the second position information and the second test inductance value;

[0064] S305: Determine the first relationship based on the first test relationship and the second test relationship.

[0065] In an embodiment of the present application, first position information and a first test inductance value of at least two positions of the horizontal coil in the horizontal direction are obtained, wherein the first position information may include the horizontal distance of the two-dimensional gap at at least two positions, and the first test inductance value may include the inductance value of the horizontal coil at at least two positions. In some specific embodiments, such as Figure 6 As shown, the at least two positions may include position 1, position 2, position 3...position N on curve 1, the first position information may include the horizontal distance of the two-dimensional gap corresponding to position 1, position 2, position 3...position N, and the first test inductance value may include the inductance value of the horizontal coil corresponding to position 1, position 2, position 3...position N.

[0066] In the embodiment of the present application, a first test relationship f11 between the first test inductance value and the horizontal distance can be determined based on the first position information x and the first test inductance value L1. The first test relationship f11 can be expressed as formula (1).

[0067] L1=f11(x) (1)

[0068] Obtain second position information and second test inductance values ​​of at least two positions of the horizontal coil in the vertical direction, such as Figure 6As shown in curve 2. The second position information may include the vertical distance of the two-dimensional gap at at least two positions, and the second test inductance value may include the inductance value of the horizontal coil at at least two positions. Among them, the second position information and the second test inductance can refer to the description of the first position information and the first test inductance in the above embodiment, which will not be repeated here. Based on the second position information and the second test inductance value, the second test relationship between the second test inductance value and the vertical distance is determined. It can be understood that from curve 2, when the vertical distance of the two-dimensional gap changes, the inductance value of the horizontal coil does not change. Therefore, the second test relationship is that the second test inductance value does not change with the change of the vertical distance.

[0069] Furthermore, based on the first test relationship and the second test relationship, it can be determined that the inductance of the horizontal coil changes only with the change of the horizontal distance and is independent of the change of the vertical distance. Therefore, the first relationship between the inductance of the horizontal coil and the horizontal distance can be determined according to formula (2).

[0070] x=g11(L1) (2)

[0071] In formula (2), x is the horizontal distance of the two-dimensional gap, and L1 is the inductance of the horizontal coil.

[0072] Furthermore, in the embodiment of the present application, before obtaining the first inductance value of the horizontal coil and the second inductance value of the vertical coil, the method further includes:

[0073] S401: Acquire third position information and a third test inductance value of at least two positions of the vertical coil in the horizontal direction, and determine a third test relationship between the third test inductance value and the horizontal distance based on the third position information and the third test inductance value.

[0074] S403: Acquire fourth position information and fourth test inductance values ​​of at least two positions of the vertical coil in the vertical direction, and determine a fourth test relationship between the fourth test inductance value and the vertical distance based on the fourth position information and the fourth test inductance value;

[0075] S405: Determine the second relationship based on the first relationship, the third test relationship, and the fourth test relationship.

[0076] In an embodiment of the present application, third position information and a third test inductance value of at least two positions of the vertical coil in the horizontal direction are obtained, wherein the third position information may include the horizontal distance of the two-dimensional gap at at least two positions, and the third test inductance value may include the inductance value of the vertical coil at at least two positions. The third position information and the third test inductance may refer to the description of the first position information and the first test inductance in the above embodiment, which will not be repeated here. Based on the third position information and the third test inductance value, a third test relationship between the third test inductance value and the horizontal distance may be determined, such as Figure 6 As shown in curve 3.

[0077] Obtain fourth position information and fourth test inductance values ​​of at least two positions of the vertical coil in the vertical direction, wherein the fourth position information may include the vertical distance of the two-dimensional gap at at least two positions, and the fourth test inductance value may include the inductance value of the vertical coil at at least two positions. The fourth position information and the fourth test inductance may refer to the description of the first position information and the first test inductance in the above embodiment, which will not be repeated here. Based on the fourth position information and the fourth test inductance value, a fourth test relationship between the fourth test inductance value and the vertical distance may be determined, such as Figure 6 As shown in curve 4.

[0078] Based on the third test relationship and the fourth test relationship, it can be seen that when the horizontal distance and the vertical distance of the two-dimensional gap change respectively, the inductance value of the vertical coil changes accordingly. Therefore, based on the third test relationship and the fourth test relationship, the relationship between the vertical coil inductance value L2 and the horizontal distance x and the numerical distance z can be expressed by formula (3).

[0079] L2=f2(x,z) (3)

[0080] Furthermore, since equation (2) has determined the relationship between the horizontal distance x and the horizontal coil inductance, equation (4) can be obtained by substituting equation (2) into equation (3).

[0081] L2=f2(g11(L1),z) (4)

[0082] from Figure 6 From the fourth test relationship represented by curve 4, it can be seen that the inductance L2 of the vertical coil is linearly related to the vertical distance z, that is, equation (4) can be further expressed as equation (5).

[0083] L2=g111(L1)*z+g112(L1) (5)

[0084] According to formula (5), we can get formula (6).

[0085] z=(L2-g112(L1)) / g111(L1) (6)

[0086] In formula (6), z is the vertical distance of the two-dimensional gap, L1 is the inductance of the horizontal coil, and L2 is the inductance of the vertical coil. The coefficients g111 and g112 in formula (5) and formula (6) can be determined based on the fourth test relationship, that is, in a specific embodiment, they can be determined based on Figure 6 Determined by curve 4 in .

[0087] In some embodiments, to reduce the gap measurement error, the winding method of the coil can be optimized through simulation to maintain the orthogonal relationship between the horizontal coil and the vertical coil as much as possible, thereby reducing the coupling degree of the two-dimensional gap horizontal distance and vertical distance to the horizontal coil and the vertical coil.

[0088] To improve the service life of the magnetic core, in some embodiments, the magnetic permeability of the two magnetic cores is not less than 1000. In the embodiment of the present application, the Comsol simulation software can be used to analyze the inductance and magnetic permeability of the magnetic core. The preset magnetic permeability is 1-10000, and the simulation results of the inductance value changing with the magnetic permeability are as follows: Figure 7 As shown in Figure 2, the simulation results of the 5-year inductance degradation rate and relative permeability are as follows: Figure 8 As shown. Figure 8 It is not difficult to see that the magnetic permeability of the core degrades by 1% each year, and the compound degradation in five years is about 10%. Figure 7 It can be seen that the degradation of magnetic permeability will lead to a decrease in inductance. Based on this, if the magnetic permeability is above 1000, the degradation of inductance in five years can be less than 0.2%.

[0089] In some embodiments, in the two-dimensional gap measurement method, when determining the first relationship and the second relationship, it is necessary to measure the horizontal distance and the vertical distance of the two-dimensional gap. Based on this, in the embodiment of the present application, the first position information, the second position information, the third position information and the fourth position information can also be determined based on the two-dimensional micrometer. In some specific embodiments, the accuracy of the two-dimensional micrometer can be 2um.

[0090] In the embodiment of the present application, the sizes of the two magnetic cores are determined based on the preset measurement threshold of the two-dimensional gap. The predicted measurement threshold may include the measurable range of the horizontal distance and the vertical distance of the two-dimensional gap, and may also include the range of the two-dimensional micrometer. In a specific embodiment, the maximum measurable value of the horizontal distance is 6mm, and the maximum measurable value of the vertical distance is 10mm, then the size of each magnetic core can be determined to be 8mm*15mm*25mm.

[0091] It should be understood that, although the various steps in the flowcharts involved in the above-mentioned embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-mentioned embodiments can include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0092] Based on the same inventive concept, the embodiment of the present application also provides a two-dimensional gap measurement device for implementing the two-dimensional gap measurement method involved above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in one or more two-dimensional gap measurement device embodiments provided below can refer to the limitations of the two-dimensional gap measurement method above, and will not be repeated here.

[0093] In one embodiment, Fig. 9 As shown, a two-dimensional gap measurement device 900 is provided, wherein magnetic cores are respectively arranged on both sides of the two-dimensional gap, wherein at least one magnetic core is arranged with a horizontal coil, and at least one magnetic core is arranged with a vertical coil, and the device comprises:

[0094] The inductance acquisition module 901 is used to acquire a first inductance value of the horizontal coil and a second inductance value of the vertical coil.

[0095] The horizontal distance determination module 902 is used to determine the horizontal distance of the two-dimensional gap based on the first inductance value and a first relationship, where the first relationship includes a corresponding relationship between the inductance value of the horizontal coil and the horizontal distance.

[0096] The vertical distance determination module 903 is used to determine the vertical distance of the two-dimensional gap based on the first inductance value, the second inductance value and a second relationship, wherein the second relationship includes the correspondence between the inductance value of the horizontal coil, the inductance value of the vertical coil and the vertical distance.

[0097] Each module in the above two-dimensional gap measurement device can be implemented in whole or in part by software, hardware, or a combination thereof. Each module can be embedded in or independent of a processor in a computer device in the form of hardware, or can be stored in a memory in a computer device in the form of software, so that the processor can call and execute operations corresponding to each module.

[0098] In one embodiment, a computer device is provided. The computer device may be a server, and its internal structure diagram may be as follows: Fig.10 As shown. The computer device includes a processor, a memory and a network interface connected through a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store data. The network interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, a two-dimensional gap measurement method is implemented.

[0099] Those skilled in the art will understand that Fig.10 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0100] In one embodiment, a computer device is provided, including a memory and a processor. A computer program is stored in the memory. When the processor executes the computer program, the steps in any of the above two-dimensional gap measurement method embodiments are implemented.

[0101] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps in any of the above two-dimensional gap measurement method embodiments are implemented.

[0102] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties.

[0103] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., but are not limited to this.

[0104] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0105] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A two-dimensional gap measurement method, characterized in that: Magnetic cores are respectively arranged on both sides of the two-dimensional gap, wherein at least one magnetic core is provided with a horizontal coil, and at least one magnetic core is provided with a vertical coil, and the method comprises: Acquire a first inductance value of the horizontal coil and a second inductance value of the vertical coil; determining a horizontal distance of the two-dimensional gap based on the first inductance value and a first relationship, wherein the first relationship includes a corresponding relationship between the inductance value of the horizontal coil and the horizontal distance; The vertical distance of the two-dimensional gap is determined based on the first inductance value, the second inductance value, and a second relationship, wherein the second relationship includes a corresponding relationship between the inductance value of the horizontal coil, the inductance value of the vertical coil, and the vertical distance.

2. The method according to claim 1, characterized in that Before obtaining the first inductance value of the horizontal coil and the second inductance value of the vertical coil, the method further includes: Acquire first position information and first test inductance values ​​of at least two positions of the horizontal coil in the horizontal direction, and determine a first test relationship between the first test inductance value and the horizontal distance based on the first position information and the first test inductance value; Acquire second position information and second test inductance values ​​of at least two positions of the horizontal coil in the vertical direction, and determine a second test relationship between the second test inductance value and the vertical distance based on the second position information and the second test inductance value; Based on the first test relationship and the second test relationship, the first relationship is determined.

3. The method according to claim 2, characterized in that Before obtaining the first inductance value of the horizontal coil and the second inductance value of the vertical coil, the method further includes: Acquire third position information and a third test inductance value of at least two positions of the vertical coil in the horizontal direction, and determine a third test relationship between the third test inductance value and the horizontal distance based on the third position information and the third test inductance value; Acquire fourth position information and a fourth test inductance value of at least two positions of the vertical coil in the vertical direction, and determine a fourth test relationship between the fourth test inductance value and the vertical distance based on the fourth position information and the fourth test inductance value; The second relationship is determined based on the first relationship, the third test relationship, and the fourth test relationship.

4. The method according to claim 1, characterized in that: The magnetic permeability of the two magnetic cores is not less than 1000.

5. The method according to claim 1, characterized in that The sizes of the two magnetic cores are determined based on a preset measurement threshold of the two-dimensional gap.

6. A two-dimensional gap measurement device, characterized in that: Magnetic cores are respectively arranged on both sides of the two-dimensional gap, wherein at least one magnetic core is provided with a horizontal coil, and at least one magnetic core is provided with a vertical coil, and the device comprises: An inductance acquisition module, used to acquire a first inductance value of the horizontal coil and a second inductance value of the vertical coil; a horizontal distance determination module, configured to determine the horizontal distance of the two-dimensional gap based on the first inductance value and a first relationship, wherein the first relationship includes a corresponding relationship between the inductance value of the horizontal coil and the horizontal distance; A vertical distance determination module is used to determine the vertical distance of the two-dimensional gap based on the first inductance value, the second inductance value and a second relationship, wherein the second relationship includes a corresponding relationship between the inductance value of the horizontal coil, the inductance value of the vertical coil and the vertical distance.

7. A two-dimensional gap measurement system, characterized in that: The system includes a two-dimensional gap sensor, an inductance acquisition module and a data processor, wherein: The two-dimensional gap sensor comprises magnetic cores respectively arranged on both sides of the two-dimensional gap, wherein at least one magnetic core is provided with a horizontal coil, and at least one magnetic core is provided with a vertical coil; The inductance acquisition module is connected to the horizontal coil and the vertical coil respectively, and is used to obtain a first inductance value of the horizontal coil and a second inductance value of the vertical coil; The data processor is connected to the inductance acquisition module, and is used to receive the first inductance value and the second inductance value, and determine the horizontal distance of the two-dimensional gap based on the first inductance value and a first relationship, and determine the vertical distance of the two-dimensional gap based on the first inductance value, the second inductance value and the second relationship, wherein the first relationship includes the corresponding relationship between the inductance value of the horizontal coil and the horizontal distance, and the second relationship includes the corresponding relationship between the inductance value of the horizontal coil, the inductance value of the vertical coil and the vertical distance.

8. The system according to claim 7, characterized in that The two-dimensional gap sensor includes at least two two-dimensional gap sub-sensors, the inductance acquisition module includes the same number of inductance acquisition units as the two-dimensional gap sub-sensors, each inductance acquisition unit is connected to the sub-horizontal coil and the sub-vertical coil of the corresponding two-dimensional gap sub-sensor, and the system further includes a hub, which is connected to each of the inductance acquisition units and the data processor, wherein: The hub is used to receive the first inductance values ​​of all sub-horizontal coils and the second inductance values ​​of all sub-vertical coils sent by the two-dimensional gap sensor and convert them into digital inductance values ​​and send them to the data processor; The data processor is further configured to determine a horizontal distance and a vertical distance of a two-dimensional gap corresponding to each two-dimensional gap sub-sensor based on the digital inductance.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 5 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 5 are implemented.

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