Electrified conductor detection method, conductivity detection system, and computer readable storage medium

Abstract

The invention provides an electrified conductor detection method, a conductivity detection system and a computer readable storage medium, and the method comprises the steps: detecting the mechanical parameters of the end part of a measurement element after an electrified conductor is electrified to generate a magnetic field and generates an acting force to a magnetic region of the measurement element; according to the size and mechanical parameters of the measuring element, calculating the stress section length of the magnetic area corresponding to the measuring element; calculating the length of the electrified conductor according to the stress section length of the magnetic area corresponding to the measuring element; wherein the length of the electrified conductor is shortened due to abrasion during working, and the length of the stress section of the measuring element is changed along with the abrasion of the electrified conductor. The actual length of the electrified conductor is indirectly measured through the influence of the magnetic field generated by the electrified conductor on the measuring element, so that whether the electrified conductor is excessively worn and needs to be replaced or maintained or not is judged.

Description

Technical Field

[0001] This application relates to the field of conductive technology for rotating and stationary components, specifically to a method for detecting current-carrying conductors, a conductive detection system, and a computer-readable storage medium. Background Technology

[0002] Carbon brushes are key components that transmit excitation current to a high-speed rotating rotor. The carbon brushes contact the high-speed rotating slip rings to guide the excitation current into the rotor coils. As the slip rings rotate at high speed, the carbon brushes wear down continuously in contact with them, and need to be replaced when they reach a certain wear level. However, current methods for monitoring carbon brush wear are difficult to implement, prone to inaccurate measurements, and sometimes fail to measure at all. Summary of the Invention

[0003] This application provides a method for detecting current-carrying conductors, a conductivity detection system, and a computer-readable storage medium, aiming to solve the above-mentioned technical problems.

[0004] In a first aspect, this application provides a method for detecting a current-carrying conductor. The method is applied to a measuring element, wherein the measuring element and the current-carrying conductor are arranged at intervals, the measuring element has a magnetic region and a non-magnetic region, and the measuring element is fixed with hinges at both ends or fixed with a support at one end. The method for detecting a current-carrying conductor includes: After a current-carrying conductor generates a magnetic field and exerts a force on the magnetic region of the measuring element, the mechanical parameters at the end of the measuring element are detected. Calculate the length of the force-bearing segment in the corresponding magnetic region of the measuring element based on its dimensions and mechanical parameters; Calculate the length of the current-carrying conductor based on the length of the force-bearing segment corresponding to the magnetic region of the measuring element; The current-carrying conductor shortens in length due to wear during operation, and the length of the force-bearing section of the measuring element changes with the wear of the current-carrying conductor.

[0005] In some embodiments, a current-carrying conductor is used to contact the target rotating structure to supply power to the target rotating structure; The current-carrying conductor shortens in length during operation due to wear and contact with the target rotating structure, and the contact force between the current-carrying conductor and the target rotating structure does not change with the length of the current-carrying conductor.

[0006] In some embodiments, the length of the magnetic region covers a preset length; The preset length is equal to the limit wear length of the current-carrying conductor.

[0007] In some embodiments, the first end of the measuring element is fixedly supported, and the second end of the measuring element is a free end; The mechanical parameters experienced by the end of the measuring element include the first support reaction force and the first bending moment at the first end of the measuring element.

[0008] In some embodiments, the dimensions of the measuring element include the length of the measuring element and the insulation length of the fixed hinge end; The insulation length of the fixed hinge support is the minimum length between the magnetic region and the second end of the measuring element; The steps for calculating the length of the force-bearing segment corresponding to the magnetic region of the measuring element, based on the size and mechanical parameters of the measuring element, include: Calculate the length of the force-bearing segment corresponding to the magnetic region of the measuring element based on the first reaction force, the first bending moment, the length of the measuring element, and the insulation length of the fixed hinge end.

[0009] In some embodiments, a first end of the measuring element is fixedly supported, and a second end of the measuring element is hinged and fixedly hinged. The mechanical parameters experienced by the end of the measuring element include the first reaction force and the first bending moment at the first end of the measuring element, and the second reaction force at the second end.

[0010] In some embodiments, the dimensions of the measuring element include the length of the measuring element and the insulation length of the fixed hinge end; The hinge end insulation length is the minimum length between the magnetic region and the free end of the measuring element; The steps for calculating the length of the force-bearing segment corresponding to the magnetic region of the measuring element, based on the size and mechanical parameters of the measuring element, include: Calculate the length of the force-bearing segment corresponding to the magnetic region of the measuring element based on the first reaction force, the first bending moment, the second reaction force, the length of the measuring element, and the insulation length of the fixed hinge end.

[0011] In some embodiments, a first end of the measuring element is fixed with a hinge, and a second end of the measuring element is fixed with a hinge. The mechanical parameters experienced by the end of the measuring element include the first reaction force at the first end of the measuring element and the second reaction force at the second end.

[0012] In some embodiments, the dimensions of the measuring element include the length of the measuring element and the insulation length of the second fixed hinge end; The insulation length of the second fixed hinge support is the minimum length between the magnetic region and the free end of the measuring element; The steps for calculating the length of the force-bearing segment corresponding to the magnetic region of the measuring element, based on the size and mechanical parameters of the measuring element, include: Calculate the length of the force-bearing segment corresponding to the magnetic region of the measuring element based on the first reaction force, the second reaction force, the length of the measuring element, and the insulation length of the second fixed hinge end.

[0013] In some embodiments, the mechanical parameters include support reactions, and the current-carrying conductor detection method further includes: Establish the first mapping relationship between the current in the current-carrying conductor and the reaction force, and the length of the force-bearing segment in the magnetic region of the measuring element; Based on the first mapping relationship and the support reaction force, determine the magnitude of the current in the current-carrying conductor.

[0014] Secondly, this application provides a conductivity detection system, including a memory and a processor. The memory stores a computer program, and when the computer program is executed by the processor, the processor performs the steps of the current-carrying conductor detection method as described in the first aspect.

[0015] Thirdly, this application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the current-carrying conductor detection method as described in the first aspect.

[0016] In this embodiment, the actual length of the current-carrying conductor is indirectly measured by the influence of the magnetic field generated by the conductor on the measuring element. Therefore, the actual length of the conductor can be used to determine whether it is excessively worn and needs replacement or repair. Compared to embedding insulated wires within the carbon brush to determine if the brush has reached its wear limit, this application can continuously monitor the actual length of the conductor, thus allowing for the assessment of the brush's lifespan and actual length. Compared to embedding reflectors within the carbon brush to determine if it has reached its wear limit, this application does not require structural modifications to the carbon brush, resulting in lower replacement and maintenance costs and eliminating the problem of measurement obstruction by brush braids. Compared to directly measuring the remaining brush length using a distance sensor, this application avoids increased brush holder volume and weight, and also reduces maintenance difficulty and prevents measurement obstruction by brush braids. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of a current-carrying conductor detection device according to an embodiment of this application is shown; Figure 2 A schematic diagram of a current-carrying conductor and a measuring element is shown in an embodiment of this application; Figure 3 Another schematic diagram of the energized conductor and measuring element in an embodiment of this application is shown; Figure 4Another schematic diagram of the energized conductor and measuring element in an embodiment of this application is shown; Figure 5 A schematic flowchart of a current-carrying conductor detection method according to an embodiment of this application is shown; Figure 6 This is a schematic diagram of a conductivity detection system provided in an embodiment of this application. Detailed Implementation

[0019] 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 the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0021] In this application, the term "exemplary" is used to mean "serving as an example, illustration, or description." Any embodiment described as "exemplary" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to make and use the invention. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that the invention can be made without using these specific details. In other instances, well-known structures and processes will not be described in detail to avoid obscuring the description of the invention with unnecessary detail. Therefore, the invention is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0022] In related technologies, the wear of carbon brushes is mainly monitored using the following methods: 1. An insulated wire is embedded inside the carbon brush, and the point where the insulation breaks marks the upper limit of the carbon brush wear. Using this method, a switching signal is only issued when the brush wear reaches the limit, making it impossible to know the brush's lifespan and actual length.

[0023] 2. A reflector is embedded in the carbon brush, and a laser sensor is used to measure the carbon brush wear. This method requires changing the brush structure, increasing the cost of a single brush. Since the brush itself is a consumable part, it needs to be replaced frequently during the motor's lifespan, increasing the motor's operation and maintenance costs. In addition, the reflector has requirements for the brush installation and brush holder structure, and it is easily blocked by the brush braid, making it impossible to measure.

[0024] 3. The remaining brush length is directly measured using a distance sensor, while the carbon brush current is measured using a current intensity sensor. Under current technology, this method increases the size and weight of the brush holder, making maintenance more difficult. It also places requirements on brush installation and brush holder structure, and is easily blocked by the brush braid, making measurement impossible.

[0025] It can be seen that the current methods for monitoring carbon brush wear are characterized by high monitoring difficulty, inaccurate measurement, and the inability to measure.

[0026] This application provides a method for detecting current-carrying conductors, a conductivity detection system, and a computer-readable storage medium, which will be described in detail below.

[0027] First, before introducing the current-carrying conductor detection method of this application, let's first introduce the current-carrying conductor detection scenario of this application, see reference. Figure 1 , Figure 1 A schematic diagram of a current-carrying conductor detection device according to an embodiment of this application is shown. The current-carrying conductor detection device includes a current-carrying conductor 100, a constant force spring 110, a brush flap 120, a brush holder 130, a measuring element 200, and a slip ring 300. The upper end of the current-carrying conductor 100 is held in place by the constant force spring 110, so that its lower end is kept in contact with the slip ring 300. The brush flap 120 is used to connect the current-carrying conductor 100 to the circuit as a current transmission wire to ensure electrical conduction between the slip ring 300 and the stationary circuit. The brush holder 130 serves as a support for the current-carrying conductor 100. The brush holder 130 fixes the current-carrying conductor 100 in a specific position through a physical structure to prevent it from shifting or falling off during the movement of the slip ring 300.

[0028] The current-carrying conductor detection method of this application is applied to a measuring element 200, which has a magnetic region 220 and a non-magnetic region 210. The measuring element 200 and the current-carrying conductor 100 are arranged at intervals. After the current-carrying conductor 100 is energized and generates a magnetic field and exerts a force on the magnetic region 220 of the measuring element 200, the fixed end support of the measuring element 200 will generate mechanical parameters (such as support reaction force, bending moment or torque).

[0029] For example, such as Figure 2 As shown, Figure 2 A simplified schematic diagram of a current-carrying conductor 100 and a measuring element 200 in an embodiment of this application is shown. The magnetic region 220 of the measuring element 200 is directly opposite the current-carrying conductor 100. The upper end of the non-magnetic region 210 of the measuring element 200 is a fixed support end, and the lower end of the non-magnetic region 210 of the measuring element 200 is a free end. After the current-carrying conductor 100 is energized and generates a magnetic field, the magnetic region 220 of the measuring element 200 is subjected to force, causing the lower end of the non-magnetic region 210 of the measuring element 200 to be displaced, and the upper end of the non-magnetic region 210 of the measuring element 200 generates a first reaction force and a first bending moment.

[0030] according to Figure 2 It can be seen that if the current-carrying conductor 100 shortens in length due to wear during operation, the length of the force-bearing segment C of the magnetic region 220 corresponding to the measuring element 200 will change. Therefore, by calculating the length of the force-bearing segment C of the magnetic region 220 corresponding to the measuring element 200, the length of the current-carrying conductor 100 shortened due to wear during operation can be calculated.

[0031] As an exemplary embodiment of a measuring element 200 having a magnetic region 220 and a non-magnetic region 210, the measuring element 200 can be a strip-shaped conductor with its length direction parallel to the direction of the current in the brush. Except for the position corresponding to the magnetic region 220, the conductor is wrapped with a shielding layer along its length. A direct current with constant direction and magnitude flows through the conductor. Therefore, when a magnetic field is generated around the current-carrying conductor 100, the measuring element 200 is subjected to the Ampere force in the magnetic field, while other regions are not subjected to the Ampere force due to the shielding.

[0032] It should be noted that the measuring element 200 can be fixed with hinges at both ends or with a fixed support at one end. Figure 2 This example demonstrates the fixing of the measuring element 200 by using one end as a fixed support and the other end as a free end, but it is not limited to this in practice. For example, see [link to relevant documentation]. Figure 3 , Figure 3 This illustration shows a schematic diagram of a current-carrying conductor 100 and a measuring element 200 in an embodiment of this application. The upper end of the measuring element 200 is a fixed support end, and the lower end is a fixed hinge. For example, see [reference needed]. Figure 4 , Figure 4 The diagram shows a current-carrying conductor 100 and a measuring element 200 in an embodiment of this application. For example, the measuring element 200 can be fixed with hinges at both ends.

[0033] Below, in conjunction with Figure 1 The present application begins by introducing the method for detecting current-carrying conductors; see reference [link to relevant documentation]. Figure 5 , Figure 5 This paper illustrates a flowchart of a current-carrying conductor detection method according to an embodiment of this application, wherein the current-carrying conductor detection method includes: Step S501: After the current-carrying conductor 100 is energized to generate a magnetic field and exerts a force on the magnetic region 220 of the measuring element 200, the mechanical parameters subjected to the end of the measuring element 200 are detected. Specifically, the current-carrying conductor 100 is used to contact the target rotating structure to supply power to it. For example, the current-carrying conductor 100 may be a carbon brush of a generator, motor, or conductivity detection system, and the target rotating structure may be the rotor of a generator, motor, or conductivity detection system. It is understood that the current-carrying conductor 100 in this application is not limited to a carbon brush; it may also be other conductive components capable of supplying power to the rotor, such as a metal graphite carbon brush, a natural graphite carbon brush, or an electrographite carbon brush.

[0034] After the current flows through the current-carrying conductor 100, the current-carrying conductor 100 will generate a magnetic field. Since the measuring element 200 has a magnetic region 220, the magnetic field will exert a force on the magnetic region 220 of the measuring element 200. Therefore, the fixed end of the current-carrying conductor 100 will generate corresponding mechanical parameters.

[0035] For example, with Figure 2 Taking a fixed support at the first end M of the measuring element 200, and a free end N at the second end as an example, the mechanical parameters experienced by the end of the measuring element 200 include the first support reaction force and the first bending moment corresponding to the first end of the measuring element 200, and according to... Figure 2 According to the force model, the magnitude of the first reaction force satisfies the following relationship: R B =q*C(1) Among them, R B q is the first reaction force (in N), q is the magnetic load exerted by the magnetic field on the force-bearing section of the measuring element 200 (in N / cm), and C is the length of the force-bearing section of the measuring element 200 (in cm).

[0036] Meanwhile, it can be seen that the first bending moment at the first end of the measuring element 200 can be calculated using the following formula:

[0037] Among them, M B The first bending moment is the fixed support end, A is the distance between the center of the force-bearing section and the corresponding first end of the measuring element 200, D is the distance between the edge of the force-bearing section and the free end, and L is the length of the measuring element 200.

[0038] For example, with Figure 3Taking a fixed support at the first end M of the measuring element 200 and a fixed hinge support at the second end N as an example, the mechanical parameters experienced by the end of the measuring element 200 include the first support reaction force and the first bending moment corresponding to the first end of the measuring element 200, and the second support reaction force corresponding to the second end. It can be seen that the magnitudes of the first support reaction force and the second support reaction force satisfy the following relationship: R A +R B =q*C

[0039] Among them, R A R is the second reaction force (in N). B q is the first reaction force (in N), q is the magnetic load exerted by the magnetic field on the force-bearing section of the measuring element 200 (in N / cm), and C is the length of the force-bearing section of the measuring element 200 (in cm).

[0040] Meanwhile, it can be seen that the first bending moment at the first end of the measuring element 200 can be calculated using the following formula:

[0041] Among them, M B The first bending moment is the fixed support end, L is the length of the measuring element 200, A is the distance between the center of the force-bearing section and the corresponding first end of the measuring element 200, and D is the distance between the edge of the force-bearing section and the free end.

[0042] For example, with Figure 4 Taking a fixed hinge at the first end M and the fixed hinge at the second end N of the measuring element 200 as an example, the mechanical parameters experienced by the ends of the measuring element 200 include the first support reaction force corresponding to the first end and the second support reaction force corresponding to the second end. It can be seen that the first and second support reactions can be calculated using the following formulas:

[0043]

[0044] Among them, R A R is the second reaction force (in N). B q is the first reaction force (in N), q is the magnetic load (in N / cm) applied by the magnetic field to the force-bearing segment of the measuring element 200, C is the length of the force-bearing segment of the measuring element 200 (in cm), A is the distance between the center of the force-bearing segment and the corresponding first end of the measuring element 200, B is the distance between the center of the force-bearing segment and the corresponding second end of the measuring element 200, and L is the length of the measuring element 200.

[0045] It should be noted that the above embodiments illustrate the bending moment or support reaction force at the end of the measuring element 200 by taking the force-bearing segment of the measuring element 200 under a uniformly distributed load as an example. In some possible embodiments, if the force-bearing segment of the measuring element 200 is subjected to magnetic torsion, the mechanical parameter at the end of the measuring element 200 can also be torque. Furthermore, those skilled in the art will understand that the measurement of support reaction force and bending moment can be achieved using corresponding sensors; for example, support reaction force can be measured using a force sensor, and bending moment can be measured using a strain gauge.

[0046] Step S502: Calculate the length of the force-bearing segment of the magnetic region 220 corresponding to the measuring element 200 based on the dimensions and mechanical parameters of the measuring element 200. After obtaining the mechanical parameters, the length of the force-bearing segment of the magnetic region 220 corresponding to the measuring element 200 can be calculated by combining the dimensions of the measuring element 200. The force-bearing segment of the magnetic region 220 refers to the part of the magnetic region 220 where the applied magnetic force is uniformly distributed.

[0047] For example, with Figure 2 Taking a measuring element 200 with one end fixed and the other end free as an example, the dimensions of the measuring element 200 include its length L and the insulation length D of the fixed hinge end. The insulation length D of the fixed hinge end is the minimum length between the magnetic region 220 and the second end of the measuring element 200. Based on the dimensions and mechanical parameters of the measuring element 200, the steps for calculating the length of the force-bearing segment of the magnetic region 220 corresponding to the measuring element 200 may include: According to the first reaction force R B First bending moment M B Calculate the length C of the force-bearing segment of the magnetic region 220 corresponding to the measuring element 200, based on the length L of the measuring element and the insulation length D of the fixed hinge end.

[0048] Specifically, combining the above formulas (1) and (2), the length of the stressed section can be calculated using the following formula:

[0049] It can be seen that M B R B The values ​​are measured, and L and D are known quantities. Therefore, the first reaction force R is obtained through measurement. B First bending moment M B The length C of the force-bearing segment corresponding to the magnetic region 220 of the measuring element 200 can then be directly calculated.

[0050] For example, with Figure 3Taking a fixed support at the first end and a fixed hinge at the second end of the measuring element 200 as an example, the dimensions of the measuring element 200 include the length L of the measuring element 200 and the insulation length D of the fixed hinge end. The insulation length D of the fixed hinge end is the minimum length between the magnetic region 220 and the second end of the measuring element 200. Based on the dimensions and mechanical parameters of the measuring element 200, the steps for calculating the length of the force-bearing segment of the magnetic region 220 corresponding to the measuring element 200 may include: According to the first reaction force R B First bending moment M B , the second reaction force R A Calculate the length L of the measuring element 200 and the insulation length D of the fixed hinge end, and calculate the length C of the force-bearing section of the magnetic region 220 corresponding to the measuring element 200.

[0051] Specifically, combining the above formulas (3) and (4), it can be seen that the length of the stressed section can be calculated using the following formula:

[0052] It can be seen that M B R B R A Since L and D are known quantities, the length C of the force-bearing segment of the magnetic region 220 corresponding to the measuring element 200 can be directly calculated.

[0053] For example, with Figure 4 Taking a fixed hinge at the first end of the measuring element 200 and a fixed hinge at the second end as an example, the dimensions of the measuring element 200 include the length L of the measuring element 200 and the insulation length D of the fixed hinge end. The insulation length D of the fixed hinge end is the minimum length between the magnetic region 220 and the second end of the measuring element 200. The steps for calculating the length of the force-bearing segment of the magnetic region 220 corresponding to the measuring element 200, based on the dimensions and mechanical parameters of the measuring element 200, may include: According to the first reaction force R B , the second reaction force R A Calculate the length L of the measuring element 200 and the insulation length D of the fixed hinge end, and calculate the length C of the force-bearing section of the magnetic region 220 corresponding to the measuring element 200.

[0054] Specifically, combining the above formulas (5) and (6), it can be seen that the length C of the force-bearing segment can be calculated using the following formula:

[0055] Where k is the first reaction force R B With the second reaction force R A The ratio of .

[0056] It can be seen that R BR A Since L and D are known quantities, the length C of the force-bearing segment of the magnetic region 220 corresponding to the measuring element 200 can be directly calculated.

[0057] Step S503: Calculate the length of the current-carrying conductor 100 based on the length C of the force-bearing segment of the magnetic region 220 corresponding to the measuring element 200.

[0058] In this embodiment of the application, the length of the current-carrying conductor 100 is shortened due to wear during operation, and the length of the force-bearing segment of the measuring element 200 changes with the wear of the current-carrying conductor 100. Therefore, after calculating the length C of the force-bearing segment of the magnetic region 220, the length of the current-carrying conductor 100 can be calculated in reverse.

[0059] For example, see Figures 2 to 4 The actual length of the current-carrying conductor 100 can be calculated using the following formula:

[0060] Where M is the actual length of the current-carrying conductor 100, and L' is the vertical distance between the free end and the lower end of the current-carrying conductor 100.

[0061] In the above formulas, D and L' are known parameters, and C is the length of the force-bearing segment, which can be calculated using formulas (7), (8), or (9). Therefore, the actual length of the current-carrying conductor 100 can be calculated. At the same time, it can be seen that the length of the force-bearing segment of the measuring element 200 is positively correlated with the length of the current-carrying conductor 100. The actual length of the current-carrying conductor 100 can be further calculated after the length of the force-bearing segment is calculated. If the length of the force-bearing segment is too small, it means that the actual length of the current-carrying conductor 100 is too short due to wear, and the current-carrying conductor 100 needs to be replaced or repaired. Conversely, if the length of the force-bearing segment is too long, it means that the actual length of the current-carrying conductor 100 has not been excessively worn, and therefore the current-carrying conductor 100 does not need to be replaced or repaired.

[0062] As can be seen, in this embodiment, the actual length of the current-carrying conductor 100 is indirectly measured by influencing the measuring element 200 with the magnetic field generated by the current-carrying conductor 100. Therefore, the actual length of the current-carrying conductor 100 can be used to determine whether it is excessively worn and needs to be replaced or repaired. Compared to embedding an insulated wire inside the carbon brush to determine whether the carbon brush has reached its wear limit, this application can continuously monitor the actual length of the current-carrying conductor 100, thereby allowing for the assessment of the brush's lifespan and actual length. Compared to embedding a reflector inside the carbon brush to determine whether the carbon brush has reached its wear limit, this application does not require structural modifications to the carbon brush, resulting in lower replacement and maintenance costs and eliminating the problem of measurement obstruction by the brush braid. Compared to using a distance sensor to directly measure the remaining brush length, this application avoids the increase in brush holder volume and weight, and also helps reduce maintenance difficulty and prevents measurement obstruction by the brush braid.

[0063] In some embodiments of this application, the current-carrying conductor 100 is used to contact the target rotating structure to supply power to the target rotating structure; wherein, the current-carrying conductor 100 shortens in length due to wear from contact with the target rotating structure during operation, and the contact force between the current-carrying conductor 100 and the target rotating structure does not change with the change in the length of the current-carrying conductor 100.

[0064] It should be noted that, in order to ensure the conductive connection between the current-carrying conductor 100 and the target rotating structure, and to prevent the contact performance at the contact point between the current-carrying conductor 100 and the target rotating structure from changing with the conductor length, this application uses a constant-force spring to ensure that the contact force between the current-carrying conductor 100 and the target rotating structure does not change with the length of the current-carrying conductor 100. This maintains the conductive connection between the current-carrying conductor 100 and the target rotating structure, thereby improving conductivity efficiency. Simultaneously, because the current-carrying conductor 100 shortens in length during operation due to wear from contact with the target rotating structure, for example... Figure 2 In the process, the lower end of the current-carrying conductor 100 is worn, and the spatial position of the upper end of the current-carrying conductor 100 moves downward so that the contact force between the current-carrying conductor 100 and the target rotating structure remains almost unchanged. At this time, the length of the force-bearing section of the measuring element 200 also changes. Therefore, the actual length of the current-carrying conductor 100 can be calculated in reverse by measuring the length of the force-bearing section of the measuring element 200.

[0065] In some embodiments of this application, such as Figure 2 As shown, the length of the magnetic region 220 is greater than the preset length; wherein, the preset length is equal to the limit wear length of the current-carrying conductor 100, so that the length of the force-bearing segment corresponding to the magnetic region 220 changes with the length of the current-carrying conductor 100, and finally makes the length of the force-bearing segment of the measuring element 200 positively correlated with the length of the current-carrying conductor 100, and finally calculates the actual length of the current-carrying conductor 100 based on the length of the force-bearing segment.

[0066] In some embodiments of this application, the current-carrying conductor detection method may further include: establishing a first mapping relationship between the current of the current-carrying conductor 100, the length of the force-bearing segment of the magnetic region of the measuring element, and the support reaction force; and determining the magnitude of the current of the current-carrying conductor 100 based on the first mapping relationship and the support reaction force.

[0067] It should be noted that after the current-carrying conductor 100 generates a magnetic field and the measuring element 200 is subjected to a magnetic force, according to electromagnetic theory, the reaction force on the end of the measuring element 200 is equal to the magnetic force on the force-bearing segment. The magnetic induction intensity of the magnetic field generated around the current-carrying conductor 100 is proportional to the magnitude of the current passing through the current-carrying conductor 100 and the length of the current-carrying conductor 100. Therefore, the first mapping relationship between the current of the current-carrying conductor 100 and the reaction force can be established through experiments. Based on this first mapping relationship and the reaction force, the magnitude of the current of the current-carrying conductor 100 can be determined.

[0068] For example, in Figure 2 Assuming that the magnetic region 220 of the measuring element 200 is energized and thus magnetic, the magnitude of the magnetic force on the force-bearing segment of the measuring element 200 is: F= =B*I0*C Where B is the magnetic induction intensity of the magnetic field generated by the current-carrying conductor 100 at the position of the measuring element 200, C is the length of the force-bearing segment, and I0 is the magnitude of the current passing through the magnetic region 220 of the measuring element 200.

[0069] The first reaction force was measured. Then, the magnetic field strength B can be calculated using the following formula: B= / (I0*C) Suppose that, based on experiments, the relationship between magnetic induction intensity B and current I when different magnitudes of current I pass through the conductor 100 is determined as follows: Therefore, based on the above formula, the current passing through the current-carrying conductor 100 can be calculated according to the following formula:

[0070] It can be seen that the above formula represents the first mapping relationship between the current in the current-carrying conductor 100 and the support reaction force. Furthermore, C and I0 in the above formula are known quantities, thus the first support reaction force can be measured. Then, the magnitude of the current in the current-carrying conductor 100 can be calculated, thus realizing the indirect measurement process of the current in the current-carrying conductor 100.

[0071] Furthermore, to better implement the current-carrying conductor detection method in the embodiments of this application, a conductivity detection system is also provided in the embodiments of this application, such as... Figure 6 As shown, the conductivity detection system includes: One or more processors; Memory; and One or more applications, wherein the one or more applications are stored in the memory and configured to be executed by the processor in the steps of the current-carrying conductor detection method described in any of the above embodiments of the current-carrying conductor 100 detection embodiments.

[0072] Those skilled in the art will understand that Figure 6 The structure shown does not constitute a limitation on the conductivity detection system and may include more or fewer components than illustrated, or combine certain components, or have different component arrangements. Wherein: Processor 601 is the control center of the system, connecting various parts of the system through various interfaces and lines. It performs various system functions and processes data by running or executing software programs and / or modules stored in memory 602, and by calling data stored in memory 602, thereby providing overall system monitoring. Optionally, processor 601 may include one or more processing cores; processor 601 may be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor. Preferably, processor 601 may integrate an application processor and a modem processor, wherein the application processor mainly handles the operating system, user interface, and applications, and the modem processor mainly handles wireless communication. It is understood that the aforementioned modem processor may not be integrated into processor 601.

[0073] The memory 602 can be used to store software programs and modules. The processor 601 executes various functional applications and data processing by running the software programs and modules stored in the memory 602. The memory 602 may mainly include a program storage area and a data storage area. The program storage area may store the operating system, application programs required for at least one function (such as sound playback function, image playback function, etc.), etc.; the data storage area may store data created based on the use of the conductivity detection system, etc. In addition, the memory 602 may include high-speed random access memory, and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other volatile solid-state storage device. Accordingly, the memory 602 may also include a memory controller to provide the processor 601 with access to the memory 602.

[0074] Although not shown, the conductivity detection system may also include a display unit, etc., which will not be described in detail here. Specifically, in this embodiment, the processor 601 in the conductivity detection system loads the executable files corresponding to the processes of one or more application programs into the memory 602 according to the following instructions, and the processor 601 runs the application programs stored in the memory 602 to realize various functions, as follows: After the current-carrying conductor 100 is energized to generate a magnetic field and exerts a force on the magnetic region 220 of the measuring element 200, the mechanical parameters subjected to the end of the measuring element 200 are detected. Based on the dimensions and mechanical parameters of the measuring element 200, calculate the length of the force-bearing segment of the magnetic region 220 corresponding to the measuring element 200; The length of the current-carrying conductor 100 is calculated based on the length C of the force-bearing segment of the magnetic region 220 corresponding to the measuring element 200. The current-carrying conductor 100 shortens in length due to wear during operation, and the length of the force-bearing section of the measuring element 200 changes with the wear of the current-carrying conductor 100.

[0075] Those skilled in the art will understand that all or part of the steps in the various methods of the above embodiments can be performed by instructions, or by instructions controlling related hardware. These instructions can be stored in a computer-readable storage medium and loaded and executed by a processor.

[0076] Therefore, embodiments of the present invention provide a computer-readable storage medium, which may include: read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk, etc. A computer program is stored thereon, which is loaded by a processor to execute the steps in any of the current-carrying conductor detection methods provided in the embodiments of the present invention. For example, the computer program loaded by the processor can execute the following steps: After the current-carrying conductor 100 is energized to generate a magnetic field and exerts a force on the magnetic region 220 of the measuring element 200, the mechanical parameters subjected to the end of the measuring element 200 are detected. Based on the dimensions and mechanical parameters of the measuring element 200, calculate the length of the force-bearing segment of the magnetic region 220 corresponding to the measuring element 200; The length of the current-carrying conductor 100 is calculated based on the length C of the force-bearing segment of the magnetic region 220 corresponding to the measuring element 200. The current-carrying conductor 100 shortens in length due to wear during operation, and the length of the force-bearing section of the measuring element 200 changes with the wear of the current-carrying conductor 100.

[0077] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the detailed descriptions of other embodiments above, which will not be repeated here.

[0078] The basic concepts have been described above. Obviously, for those skilled in the art, the detailed disclosure above is merely illustrative and does not constitute a limitation of this application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and corrections to this application. Such modifications, improvements, and corrections are suggested in this application, and therefore remain within the spirit and scope of the exemplary embodiments of this application.

[0079] Furthermore, this application uses specific terms to describe embodiments of the application. For example, "an embodiment," "one embodiment," and / or "some embodiments" refer to a particular feature, structure, or characteristic associated with at least one embodiment of the application. Therefore, it should be emphasized and noted that "an embodiment," "one embodiment," or "an alternative embodiment" mentioned twice or more in different locations in this specification do not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of the application can be appropriately combined.

[0080] Similarly, it should be noted that, in order to simplify the description of the present application and thus aid in the understanding of one or more embodiments of the invention, the foregoing description of the embodiments of the present application sometimes combines multiple features into a single embodiment, drawing, or description thereof. However, this disclosure method does not imply that the subject matter of the application requires more features than those mentioned in the claims. In fact, the embodiments contain fewer features than all the features of the single embodiments disclosed above.

[0081] In some embodiments, numbers describing the quantity of components and attributes are used. It should be understood that such numbers used in the description of embodiments are modified in some examples with the terms "approximately," "approximately," or "generally." Unless otherwise stated, "approximately," "approximately," or "generally" indicates that the numbers are allowed to vary by ±20%. Accordingly, in some embodiments, the numerical parameters used in the specification and claims are approximate values, which may be changed depending on the characteristics required by individual embodiments. In some embodiments, numerical parameters should take into account specified significant digits and employ a general method of digit reservation. Although the numerical ranges and parameters used to confirm their breadth of scope in some embodiments of this application are approximate values, in specific embodiments, such values ​​are set as precisely as feasible.

[0082] The present application provides a detailed description of a current-carrying conductor detection method, a conductivity detection system, and a computer-readable storage medium. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, those skilled in the art will recognize that there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A method for detecting current-carrying conductors, characterized in that, The current-carrying conductor detection method is applied to a measuring element, wherein the measuring element and the current-carrying conductor are arranged at intervals, the measuring element has a magnetic region and a non-magnetic region, and the current-carrying conductor detection method includes: After the current-carrying conductor generates a magnetic field and exerts a force on the magnetic region of the measuring element, the mechanical parameters experienced by the end of the measuring element are detected. Calculate the length of the force-bearing segment of the measuring element corresponding to the magnetic region based on the dimensions of the measuring element and the mechanical parameters; The length of the current-carrying conductor is calculated based on the length of the force-bearing segment corresponding to the magnetic region of the measuring element; The current-carrying conductor shortens in length due to wear during operation, and the length of the force-bearing section of the measuring element changes with the wear of the current-carrying conductor.

2. The method for detecting current-carrying conductors as described in claim 1, characterized in that, The current-carrying conductor is used to contact the target rotating structure to supply power to the target rotating structure; The current-carrying conductor shortens in length during operation due to wear and contact with the target rotating structure, and the contact force between the current-carrying conductor and the target rotating structure does not change with the length of the current-carrying conductor.

3. The method for detecting current-carrying conductors as described in claim 1, characterized in that, The length of the magnetic region covers a preset length; The preset length is equal to the limit wear length of the current-carrying conductor.

4. The method for detecting current-carrying conductors as described in claim 1, characterized in that, The first end of the measuring element is fixedly supported, and the second end of the measuring element is a free end; The mechanical parameters experienced by the end of the measuring element include the first support reaction force and the first bending moment at the first end of the measuring element.

5. The method for detecting current-carrying conductors as described in claim 4, characterized in that, The dimensions of the measuring element include the length of the measuring element and the insulation length of the fixed hinge end; The insulation length of the fixed hinge support end is the minimum length between the magnetic region and the second end of the measuring element; The step of calculating the length of the force-bearing segment of the measuring element corresponding to the magnetic region based on the size of the measuring element and the mechanical parameters includes: The length of the force-bearing segment of the measuring element corresponding to the magnetic region is calculated based on the first reaction force, the first bending moment, the length of the measuring element, and the insulation length of the fixed hinge end.

6. The method for detecting current-carrying conductors as described in claim 1, characterized in that, The first end of the measuring element is fixedly supported, and the second end of the measuring element is fixedly hinged. The mechanical parameters experienced by the end of the measuring element include the first reaction force and the first bending moment at the first end of the measuring element, and the second reaction force at the second end.

7. The method for detecting current-carrying conductors as described in claim 6, characterized in that, The dimensions of the measuring element include the length of the measuring element and the insulation length of the fixed hinge end; The insulation length of the fixed hinge end is the minimum length between the magnetic region and the fixed hinge end of the measuring element. The step of calculating the length of the force-bearing segment of the measuring element corresponding to the magnetic region based on the size of the measuring element and the mechanical parameters includes: The length of the force-bearing segment of the measuring element corresponding to the magnetic region is calculated based on the first reaction force, the first bending moment, the second reaction force, the length of the measuring element, and the insulation length of the fixed hinge end.

8. The method for detecting a current-carrying conductor as described in claim 1, characterized in that, The first end of the measuring element is fixed with a hinge, and the second end of the measuring element is fixed with a hinge; The mechanical parameters experienced by the end of the measuring element include the first reaction force at the first end of the measuring element and the second reaction force at the second end.

9. The method for detecting a current-carrying conductor as described in claim 8, characterized in that, The dimensions of the measuring element include the length of the measuring element and the insulation length of the second end fixed hinge support. The insulation length of the second fixed hinge support is the minimum length between the magnetic region and the free end of the measuring element; The step of calculating the length of the force-bearing segment of the measuring element corresponding to the magnetic region based on the size of the measuring element and the mechanical parameters includes: The length of the force-bearing segment of the measuring element corresponding to the magnetic region is calculated based on the first reaction force, the second reaction force, the length of the measuring element, and the insulation length of the fixed hinge end.

10. The method for detecting a current-carrying conductor as described in claim 1, characterized in that, The mechanical parameters include support reaction force, and the current-carrying conductor detection method further includes: Establish a first mapping relationship between the current in the current-carrying conductor and the reaction force, and the length of the force-bearing segment in the magnetic region of the measuring element; The magnitude of the current in the energized conductor is determined based on the first mapping relationship and the supporting reaction force.

11. A conductivity detection system, characterized in that, The device includes a memory and a processor, wherein the memory stores a computer program, and when the computer program is executed by the processor, the processor causes the processor to perform the steps of the current-carrying conductor detection method as described in any one of claims 1 to 10.

12. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the current-carrying conductor detection method as described in any one of claims 1 to 10.

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