A carbon fiber wire damage detection method, device and electronic equipment

Abstract

This invention provides a method, apparatus, and electronic device for detecting damage in carbon fiber conductors. The method includes: acquiring the strain and loss at n points on the optical fiber; calculating the difference between the strain at each point and the strain at the previous adjacent point, as the first difference for that point; determining strain anomaly points based on the first difference anomaly points; calculating the difference between the loss at each point and the loss at the previous adjacent point, as the second difference for that point; determining loss anomaly points based on the second difference anomaly points; and determining the loss anomaly point if the location corresponding to the strain anomaly point is also a loss anomaly point, then that location is taken as the damage location of the carbon fiber conductor. This invention can improve the accuracy of optical fiber damage detection and carbon fiber conductor damage detection by acquiring the strain and loss at each point on the optical fiber, calculating the strain and loss differences, and identifying the locations corresponding to the strain and loss difference anomaly points as the damage locations of the carbon fiber conductor. By determining the optical fiber damage location based on strain and loss, the accuracy of optical fiber damage detection and carbon fiber conductor damage detection is improved.

Description

Technical Field

[0001] This invention relates to the field of carbon fiber conductor testing technology, and in particular to a method, apparatus and electronic device for detecting carbon fiber conductor damage. Background Technology

[0002] Carbon fiber conductors offer significant advantages in increasing power transmission capacity, reducing sag, minimizing line loss, and enhancing wind resistance. They have been widely used in critical power plant transmission lines and large-capacity 500kV lines. The core of a carbon fiber conductor is made of carbon fiber impregnated with resin. Its elongation is relatively low, limiting its bending radius and preventing sharp-angle bending. It is susceptible to damage during manufacturing, installation, and use, easily developing hidden defects such as microcracks. Typically, an optical fiber is embedded in the center of the stranded carbon fiber conductor. When the carbon fiber conductor is damaged by bending, the optical fiber is simultaneously damaged. The damage to the carbon fiber conductor can be reflected by detecting the damage to the optical fiber.

[0003] Existing detection methods determine the damage status of optical fibers by detecting strain changes. For example, they measure strain at different times or under different tensile conditions, identifying locations with larger strain changes as damage sites. However, existing methods rely solely on strain measurement to determine damage location, resulting in a single detection indicator and low accuracy. Summary of the Invention

[0004] This invention provides a method, apparatus, and electronic device for detecting damage to carbon fiber conductors, thereby addressing the problems of limited indicators and low accuracy in existing carbon fiber conductor damage detection methods.

[0005] In a first aspect, embodiments of the present invention provide a method for detecting damage in carbon fiber conductors, wherein the carbon fiber conductor includes an optical fiber. The method includes: acquiring the strain and loss at n points on the optical fiber, wherein the n points are uniformly distributed along the propagation direction of backscattered light in the optical fiber, with a spacing of L and n>3. Calculating the difference between the strain at each point and the strain at the previous adjacent point, as a first difference for that point. Based on the first difference anomaly point, determining strain anomaly points, wherein the absolute value of the first difference of the first difference anomaly point is greater than a preset value. Calculating the difference between the loss at each point and the loss at the previous adjacent point, as a second difference for that point. Based on the second difference anomaly point, determining loss anomaly points, wherein the absolute value of the second difference of the second difference anomaly point is greater than a preset value. If the location corresponding to the strain anomaly point is a loss anomaly point, then that location is taken as the damage location of the carbon fiber conductor.

[0006] In one possible implementation, determining the strain anomaly point based on the first differential anomaly point includes: if the distance between the current first differential anomaly point and the next adjacent first differential anomaly point is equal to L, then the current first differential anomaly point is taken as the strain anomaly point.

[0007] In one possible implementation, determining the strain anomaly point based on the first differential anomaly point includes: if the distance between two first differential anomaly points is greater than L, and the strain at each point between the two first differential anomaly points is greater than a preset value, then the center point of the two first differential anomaly points is taken as the strain anomaly point.

[0008] In one possible implementation, determining the loss anomaly based on the second differential anomaly includes: if the distance between the current second differential anomaly and the next adjacent second differential anomaly is equal to L, then the current second differential anomaly is taken as the loss anomaly.

[0009] In one possible implementation, determining the loss anomaly point based on the second differential anomaly point includes: if the distance between two second differential anomaly points is greater than L, and all points between the two second differential anomaly points are second differential anomaly points, then the center point of the two second differential anomaly points is taken as the loss anomaly point.

[0010] In one possible implementation, after determining that if the location corresponding to the strain anomaly point is a loss anomaly point, then that location is taken as the damage location of the carbon fiber conductor, the method further includes: if the distance between the location of the strain anomaly point and the location of any loss anomaly point is less than a preset value, then that location is taken as the damage location of the carbon fiber conductor.

[0011] In one possible implementation, after calculating the difference between the loss at each point and the loss at the previous adjacent point as the second difference for that point, the method further includes: if the second difference for that point is greater than a threshold and the loss at that point is lower than a preset value, then the position of that point is taken as the damage location of the carbon fiber conductor.

[0012] Secondly, embodiments of the present invention provide a carbon fiber conductor damage detection device, wherein the carbon fiber conductor includes an optical fiber, and the device includes:

[0013] The acquisition module is used to acquire the strain and loss at n points on the optical fiber, wherein the n points are uniformly distributed along the transmission direction of the backscattered light of the optical fiber, with a spacing of L and n>3.

[0014] The first calculation module is used to calculate the difference between the strain at each point and the strain at the previous adjacent point, which is used as the first difference for that point.

[0015] The first confirmation module is used to determine the strain anomaly point based on the first differential anomaly point, wherein the absolute value of the first difference of the first differential anomaly point is greater than a preset value.

[0016] The second calculation module is used to calculate the difference between the loss at each point and the loss at the previous adjacent point, which is used as the second difference for that point.

[0017] The second confirmation module is used to determine loss anomaly points based on the second differential anomaly point, wherein the absolute value of the second difference of the second differential anomaly point is greater than a preset value.

[0018] The damage location module is used to identify the location of the carbon fiber conductor as the damage location if the location corresponding to the strain anomaly point is also the loss anomaly point.

[0019] Thirdly, embodiments of the present invention provide an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the method as described in the first aspect or any possible implementation of the first aspect.

[0020] Fourthly, embodiments of the present invention provide a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps of the method as described in the first aspect or any possible implementation thereof.

[0021] This invention provides a method, apparatus, and electronic device for detecting damage in carbon fiber conductors, wherein the carbon fiber conductor includes an optical fiber. The method includes: acquiring the strain and loss at n points on the optical fiber, wherein the n points are uniformly distributed along the propagation direction of backscattered light in the optical fiber, with a spacing of L, and n>3. Calculating the difference between the strain at each point and the strain at the previous adjacent point, as the first difference for that point. Based on the first difference anomaly point, determining strain anomaly points, wherein the absolute value of the first difference of the first difference anomaly point is greater than a preset value. Calculating the difference between the loss at each point and the loss at the previous adjacent point, as the second difference for that point. Based on the second difference anomaly point, determining loss anomaly points, wherein the absolute value of the second difference of the second difference anomaly point is greater than a preset value. If the location corresponding to the strain anomaly point is also a loss anomaly point, then that location is taken as the damage location of the carbon fiber conductor. This invention acquires the strain and loss at uniformly distributed points on the optical fiber, calculates the strain difference and loss difference, determines strain difference anomaly points and loss difference anomaly points, and takes the locations corresponding to the strain difference anomaly points and loss difference anomaly points as the damage locations of the carbon fiber conductor. On the one hand, by determining the location of fiber optic damage based on strain and loss, the accuracy of fiber optic damage detection is improved, as is the accuracy of carbon fiber conductor damage detection. On the other hand, compared to detection methods based on different times or different tensile states, this invention determines the damage location by the strain and loss differences at various points on the fiber, which is not limited by detection time or application scenario, and the detection method is simple. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the 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.

[0023] Figure 1 This is a schematic diagram of the structure of the carbon fiber conductor provided in an embodiment of the present invention;

[0024] Figure 2 This is a flowchart illustrating the implementation of the carbon fiber conductor damage detection method provided in this embodiment of the invention.

[0025] Figure 3 This is a schematic diagram of the first difference curve provided in an embodiment of the present invention;

[0026] Figure 4 This is another schematic diagram of the first difference curve provided in an embodiment of the present invention;

[0027] Figure 5 This is a schematic diagram of the second difference curve provided in an embodiment of the present invention;

[0028] Figure 6 This is a schematic diagram of the carbon fiber conductor damage detection device provided in an embodiment of the present invention;

[0029] Figure 7 This is a schematic diagram of an electronic device provided in an embodiment of the present invention. Detailed Implementation

[0030] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of the invention. However, those skilled in the art will understand that the invention can be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods are omitted so as not to obscure the description of the invention with unnecessary detail.

[0031] To make the objectives, technical solutions, and advantages of the present invention clearer, specific embodiments will be described below in conjunction with the accompanying drawings.

[0032] Figure 1 This is a schematic diagram of the structure of a carbon fiber conductor provided in an embodiment of the present invention. Figure 1 As shown, carbon fiber conductors, also known as carbon fiber composite core conductors, use carbon fiber instead of ordinary steel-cored aluminum stranded wire for the core. The core of a carbon fiber conductor is typically a single high-strength, heat-resistant carbon fiber composite core, with an outer layer of stranded aluminum wire. The carbon fiber composite core bears the mechanical force of the conductor, while the stranded aluminum wire conducts electricity.

[0033] The core of carbon fiber conductors is made of carbon fiber impregnated with resin. It has low elongation and a limited bending radius, preventing sharp-angle bending. It is susceptible to damage during manufacturing, installation, and use, easily developing hidden defects such as microcracks. Optical fibers are typically implanted in the center of the stranded carbon fiber conductor. When the carbon fiber conductor is damaged by bending, the optical fiber is simultaneously damaged. The damage to the carbon fiber conductor can be reflected by detecting the damage to the optical fiber.

[0034] Existing detection methods determine the damage status of optical fibers by detecting strain changes. For example, they measure strain at different times or under different tensile conditions, identifying locations with larger strain changes as damage sites. However, existing methods rely solely on strain measurement to determine damage location, resulting in a single detection indicator and low accuracy.

[0035] This invention provides a method, apparatus, and electronic device for detecting damage to carbon fiber conductors, thereby addressing the problems of limited indicators and low accuracy in existing carbon fiber conductor damage detection methods.

[0036] Figure 2 This is a flowchart illustrating the implementation of the carbon fiber conductor damage detection method provided in this embodiment of the invention. See also... Figure 2 The carbon fiber conductor includes optical fiber. This means the carbon fiber conductor contains optical fiber embedded within the carbon fiber. When the carbon fiber conductor is damaged due to bending, the optical fiber is simultaneously damaged. The damage to the fiber can reflect the damage to the carbon fiber. The above methods include:

[0037] In step S1, the strain and loss at n points on the optical fiber are obtained, wherein the n points are uniformly distributed along the propagation direction of the backscattered light of the optical fiber, with a spacing of L and n>3.

[0038] For example, strain and loss are determined by detecting the frequency and intensity of backscattered light. For example, a laser is emitted from one end of an optical fiber, the input end, into the fiber. As the laser propagates within the fiber, it continuously generates backscattered light. The backscattered light generated at each point on the fiber propagates in the opposite direction to the laser's propagation. The backscattered light is received at the input end of the fiber. The backscattered light received at different times corresponds to the backscattered light generated at different locations on the fiber.

[0039] For example, starting from the input end of the optical fiber, the points are numbered sequentially as 1, 2, 3...n according to the spacing L.

[0040] The backscattered light received at the input end of the optical fiber is a continuous signal. For example, by setting the sampling frequency, the sampling interval is determined, that is, the sampling frequency corresponds to the interval of n points on the optical fiber.

[0041] The relationship between the spacing L and the sampling frequency F is as follows:

[0042] L = c / (2 * F)

[0043] Where c is the speed of light in the optical fiber, typically 2 * 10⁻⁶. 8 m / s.

[0044] For example, the sampling frequency F ranges from 50MHz to 500MHz, and the corresponding spacing L ranges from 2 meters to 20 centimeters. The distance between the nth sampling point and the fiber optic input end is n*L. For example, the number of sampling points P ranges from 100 to 100,000, and the corresponding measurement distance is P*L.

[0045] For example, the strain and loss at n points on the optical fiber are obtained simultaneously. Alternatively, the strain at n points on the optical fiber is obtained, and then the loss at those same n points is obtained. That is, the strain and loss are obtained separately.

[0046] In step S2, the difference between the strain at each point and the strain at the previous adjacent point is calculated and used as the first difference for that point.

[0047] For example, the strain at each point is obtained, resulting in a strain sequence of n points, [Y1,Y2,Y3,…,Y]. n ]. Y n This represents the strain at the nth point.

[0048] For example, the first difference is calculated based on the following formula:

[0049] dYε(n)=Yε n -Yε n-1

[0050] Where dYε(n) represents the first difference at the nth point, Yε n Yε represents the strain at the nth point. n-1 Let dYε(n) represent the strain at the (n-1)th point (n>1). The position corresponding to the first difference dYε(n) is the position of the nth point on the optical fiber, and its distance from the input end of the optical fiber is n*L.

[0051] When the carbon fiber conductor is undamaged, its strain distribution is uniform and consistent, so the first difference at each point is close to zero. When the carbon fiber conductor is damaged, the strain at the damaged location changes significantly during the tensile process, i.e., a relatively large deformation occurs. At this time, the first difference at the corresponding location will change abruptly.

[0052] In step S3, strain anomaly points are determined based on the first differential anomaly point, wherein the absolute value of the first difference of the first differential anomaly point is greater than a preset value.

[0053] The first differential anomaly point indicates that the fiber strain distribution in the vicinity of that point is uneven and abrupt. For example, points within a certain distance of the first differential anomaly point can be used as strain anomaly points.

[0054] In step S4, the difference between the loss at each point and the loss at the previous adjacent point is calculated and used as the second difference for that point.

[0055] For example, the loss at each point is obtained, resulting in a loss sequence of n points, [X1, X2, X3, ..., X...]. n ]. X n This represents the strain at the nth point.

[0056] For example, the second difference is calculated based on the following formula:

[0057] dXε(n)=Xε n -Xε n-1

[0058] Where dXε(n) represents the second difference at the nth point, Xε n Let Xε represent the loss at the nth point. n-1 Let dXε(n) represent the loss at the (n-1)th point (n>1). The position corresponding to the second difference dXε(n) is the position of the nth point on the optical fiber, which is n*L away from the input end of the optical fiber.

[0059] When the carbon fiber conductor is undamaged, its loss is stable, and the magnitude of its loss sequence decreases uniformly with increasing distance, thus the values ​​of each element in its differential sequence are stable. When the carbon fiber conductor is damaged, the fiber at the damaged location experiences significant loss, and the loss differential sequence at that location undergoes a sudden change.

[0060] In step S5, loss anomalies are determined based on the second differential anomaly point, wherein the absolute value of the second difference of the second differential anomaly point is greater than a preset value.

[0061] The second differential anomaly point indicates that the fiber loss distribution in the vicinity of that point is uneven or abrupt. For example, points within a certain distance of the second differential anomaly point can be designated as loss anomaly points.

[0062] In step S6, if the location corresponding to the strain anomaly point is the loss anomaly point, then that location is taken as the damage location of the carbon fiber conductor.

[0063] If a point is both an abnormal strain point and an abnormal loss point, then that location is considered the damage location of the carbon fiber conductor.

[0064] This invention acquires the strain and loss at uniformly distributed points on an optical fiber, calculates the strain difference and loss difference, identifies strain difference anomalies and loss difference anomalies, and uses the locations corresponding to these anomalies as the damage locations of the carbon fiber conductor. On one hand, by determining the optical fiber damage location based on strain and loss, the accuracy of optical fiber damage detection and carbon fiber conductor damage detection is improved. On the other hand, compared to detection methods based on different times or different tensile states, this invention determines the damage location through strain and loss differences at various points on the optical fiber, which is not limited by detection time or usage scenario, and the detection method is simple.

[0065] Strain testing alone can typically detect damage caused by large-scale strain changes. By simultaneously detecting the strain and loss of the optical fiber, damage can be detected in carbon fiber conductors that involves partial bending but has not yet resulted in large-scale strain changes.

[0066] The degree of damage to carbon fiber conductors varies at each stage of production, transportation, installation, and use. Damage may occur at only a few points, or it may spread over a wide area, affecting multiple points and segments. The sampling frequency determines the sampling interval. Higher sampling frequencies require smaller sampling intervals. When the sampling interval is comparable to the size of strain anomalies, the accuracy of damage detection is affected by the determination of these anomalies.

[0067] Figure 3 This is a schematic diagram of the first difference curve provided in an embodiment of the present invention; refer to Figure 3 :

[0068] In one possible implementation, determining the strain anomaly based on the first differential anomaly includes: if the distance between the current first differential anomaly and the next adjacent first differential anomaly is equal to L, then the current first differential anomaly is taken as the strain anomaly.

[0069] When the sampling interval L is comparable to the interval of the first differential anomaly point, the current first differential anomaly point is taken as the strain anomaly point, which is closest to the actual damage location.

[0070] When the sampling frequency is high, the sampling interval is small. When the damage area is large, the damage area is much larger than the sampling interval, resulting in a large number of strain anomalies, which increases the computational load and decreases the detection efficiency.

[0071] Figure 4 This is another schematic diagram of the first difference curve provided in an embodiment of the present invention; refer to Figure 4 :

[0072] In one possible implementation, determining the strain anomaly point based on the first differential anomaly point includes: if the distance between two first differential anomaly points is greater than L, and the strain at each point between the two first differential anomaly points is greater than a preset value, then the center point of the two first differential anomaly points is taken as the strain anomaly point.

[0073] If the distance between the current first differential anomaly and the next adjacent first differential anomaly is greater than L, and the strain between the current first differential anomaly and the next adjacent first differential anomaly is greater than a preset value, then the center point between the current first differential anomaly and the next adjacent first differential anomaly is taken as the strain anomaly point.

[0074] When there are many consecutive strain abrupt change points, the center point of the abnormal region is taken as the strain abrupt change point, which reduces the amount of calculation and improves the detection efficiency.

[0075] In one possible implementation, determining the loss anomaly based on the second differential anomaly includes: if the distance between the current second differential anomaly and the next adjacent second differential anomaly is equal to L, then the current second differential anomaly is taken as the loss anomaly.

[0076] When the distance between two loss anomalies is comparable to the spacing L, the two loss anomalies are treated as a single anomaly, which reduces the amount of computation and improves detection efficiency.

[0077] Figure 5 This is a schematic diagram of the second difference curve provided in an embodiment of the present invention; refer to Figure 5 :

[0078] In one possible implementation, determining loss anomalies based on second differential anomalies includes: if the distance between two second differential anomalies is greater than L, and all points between the two second differential anomalies are second differential anomalies, then the center point of the two second differential anomalies is taken as the loss anomaly.

[0079] When there are many consecutive loss anomalies, the center point of the abnormal region is taken as the loss anomaly point, which reduces the amount of calculation and improves the detection efficiency.

[0080] In one possible implementation, after determining that the location corresponding to the strain anomaly point is a loss anomaly point and thus the location is taken as the damage location of the carbon fiber conductor, the method further includes: if the distance between the location of the strain anomaly point and the location of any loss anomaly point is less than a preset value, then the location is taken as the damage location of the carbon fiber conductor.

[0081] Due to sampling accuracy issues, or the need to re-determine strain and loss anomalies, discrepancies may exist between strain and loss anomalies at the same location. By identifying strain and loss anomalies with a spacing smaller than a preset value as loss locations, the loss location recognition rate and detection accuracy are improved.

[0082] In one possible implementation, after calculating the difference between the loss at each point and the loss at the previous adjacent point as the second difference for that point, the method further includes: if the second difference for that point is greater than a threshold and the loss at that point is lower than a preset value, then the position of that point is taken as the damage location of the carbon fiber conductor.

[0083] When an optical fiber is damaged and breaks, the second differential signal at the break point is greater than a threshold, and the signal after that point is zero. By judging the second differential signal and the magnitude of the loss, the location of the fiber break can be determined.

[0084] It should be understood that the sequence number of each step in the above embodiments does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0085] The following are device embodiments of the present invention. For details not described in detail, please refer to the corresponding method embodiments described above.

[0086] Figure 6 A schematic diagram of the carbon fiber conductor damage detection device provided in an embodiment of the present invention is shown. For ease of explanation, only the parts related to the embodiment of the present invention are shown, and are described in detail below:

[0087] like Figure 6 As shown, a carbon fiber conductor damage detection device 4 is provided, wherein the carbon fiber conductor includes an optical fiber, and the device includes:

[0088] The acquisition module 21 is used to acquire the strain and loss of n points on the optical fiber, wherein the n points are uniformly distributed along the transmission direction of the backscattered light of the optical fiber, with a spacing of L and n>3.

[0089] The first calculation module 22 is used to calculate the difference between the strain at each point and the strain at the previous adjacent point, which is used as the first difference at that point.

[0090] The first confirmation module 23 is used to determine the strain anomaly point based on the first differential anomaly point, wherein the absolute value of the first difference of the first differential anomaly point is greater than a preset value.

[0091] The second calculation module 24 is used to calculate the difference between the loss at each point and the loss at the previous adjacent point, which is used as the second difference for that point.

[0092] The second confirmation module 25 is used to determine loss anomaly points based on the second differential anomaly points, wherein the absolute value of the second difference of the second differential anomaly point is greater than a preset value.

[0093] Damage location module 26 is used to determine the damage location of the carbon fiber conductor if the location corresponding to the strain anomaly point is also a loss anomaly point.

[0094] This invention acquires the strain and loss at uniformly distributed points on an optical fiber, calculates the strain difference and loss difference, identifies strain difference anomalies and loss difference anomalies, and uses the locations corresponding to these anomalies as the damage locations of the carbon fiber conductor. On one hand, by determining the optical fiber damage location based on strain and loss, the accuracy of optical fiber damage detection and carbon fiber conductor damage detection is improved. On the other hand, compared to detection methods based on different times or different tensile states, this invention determines the damage location through strain and loss differences at various points on the optical fiber, which is not limited by detection time or usage scenario, and the detection method is simple.

[0095] In one possible implementation, determining the strain anomaly based on the first differential anomaly includes: if the distance between the current first differential anomaly and the next adjacent first differential anomaly is equal to L, then the current first differential anomaly is taken as the strain anomaly.

[0096] In one possible implementation, determining the strain anomaly point based on the first differential anomaly point includes: if the distance between two first differential anomaly points is greater than L, and the strain at each point between the two first differential anomaly points is greater than a preset value, then the center point of the two first differential anomaly points is taken as the strain anomaly point.

[0097] In one possible implementation, determining the loss anomaly based on the second differential anomaly includes: if the distance between the current second differential anomaly and the next adjacent second differential anomaly is equal to L, then the current second differential anomaly is taken as the loss anomaly.

[0098] In one possible implementation, determining loss anomalies based on second differential anomalies includes: if the distance between two second differential anomalies is greater than L, and all points between the two second differential anomalies are second differential anomalies, then the center point of the two second differential anomalies is taken as the loss anomaly.

[0099] In one possible implementation, after determining that the location corresponding to the strain anomaly point is a loss anomaly point and thus the location is taken as the damage location of the carbon fiber conductor, the method further includes: if the distance between the location of the strain anomaly point and the location of any loss anomaly point is less than a preset value, then the location is taken as the damage location of the carbon fiber conductor.

[0100] In one possible implementation, after calculating the difference between the loss at each point and the loss at the previous adjacent point as the second difference for that point, the method further includes: if the second difference for that point is greater than a threshold and the loss at that point is lower than a preset value, then the position of that point is taken as the damage location of the carbon fiber conductor.

[0101] Figure 7 This is a schematic diagram of an electronic device provided in an embodiment of the present invention. For example... Figure 7 As shown, the electronic device 3 in this embodiment includes: a processor 30, a memory 31, and a computer program 32 stored in the memory 31 and executable on the processor 30. When the processor 30 executes the computer program 32, it implements the steps in the various carbon fiber conductor damage detection method embodiments described above, for example... Figure 2 Steps S1 to S6 are shown. Alternatively, when the processor 30 executes the computer program 32, it implements the functions of each module / unit in the above-described device embodiments, for example... Figure 6 The functions of modules 21 to 26 are shown.

[0102] For example, the computer program 32 can be divided into one or more modules / units, which are stored in the memory 31 and executed by the processor 30 to complete the present invention. The one or more modules / units can be a series of computer program instruction segments capable of performing a specific function, which describe the execution process of the computer program 32 in the electronic device 3. For example, the computer program 32 can be divided into... Figure 6 Modules / units 21 to 26 are shown.

[0103] The electronic device 3 can be a desktop computer, laptop, handheld computer, or cloud server, etc. The electronic device 3 may include, but is not limited to, a processor 30 and a memory 31. Those skilled in the art will understand that... Figure 7 This is merely an example of electronic device 3 and does not constitute a limitation on electronic device 3. It may include more or fewer components than shown, or combine certain components, or different components. For example, the electronic device may also include input / output devices, network access devices, buses, etc.

[0104] The processor 30 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. A general-purpose processor may be a microprocessor or any conventional processor.

[0105] The memory 31 can be an internal storage unit of the electronic device 3, such as a hard disk or memory. The memory 31 can also be an external storage device of the electronic device 3, such as a plug-in hard disk, smart media card (SMC), secure digital card (SD), flash card, etc., equipped on the electronic device 3. Furthermore, the memory 31 can include both internal and external storage units of the electronic device 3. The memory 31 is used to store the computer program and other programs and data required by the electronic device. The memory 31 can also be used to temporarily store data that has been output or will be output.

[0106] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional units and modules is merely an example. In practical applications, the above functions can be assigned to different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiments can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit. Furthermore, the specific names of the functional units and modules are only for easy differentiation and are not intended to limit the scope of protection of this application. The specific working process of the units and modules in the above system can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0107] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0108] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this invention.

[0109] In the embodiments provided by this invention, it should be understood that the disclosed devices / electronic devices and methods can be implemented in other ways. For example, the device / electronic device embodiments described above are merely illustrative. For instance, the division of modules or units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms.

[0110] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0111] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0112] If the integrated module / unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the above embodiments of the present invention can also be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various carbon fiber conductor damage detection method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include: any entity or device capable of carrying the computer program code, a recording medium, a USB flash drive, a portable hard drive, a magnetic disk, an optical disk, a computer memory, a read-only memory (ROM), a random access memory (RAM), an electrical carrier signal, a telecommunication signal, and a software distribution medium, etc.

[0113] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included within the protection scope of the present invention.

Claims

1. A carbon fiber wire damage detection method characterized by, The carbon fiber conductor includes an optical fiber; the method includes: obtaining the strain and loss at n points on the optical fiber, wherein the n points are uniformly distributed along the transmission direction of the backscattered light of the optical fiber, with a spacing of L and n>3. Calculate the difference between the strain at each point and the strain at the previous adjacent point, and use this difference as the first difference for that point; Based on the first differential anomaly point, a strain anomaly point is determined, wherein the absolute value of the first difference of the first differential anomaly point is greater than a preset value; the first differential anomaly point indicates that the fiber strain distribution at that point is uneven; the determination of the strain anomaly point based on the first differential anomaly point includes: if the distance between the current first differential anomaly point and the next adjacent first differential anomaly point is equal to L, then the current first differential anomaly point is taken as the strain anomaly point. Calculate the difference between the loss at each point and the loss at the previous adjacent point, and use this difference as the second difference for that point; Based on the second differential anomaly point, a loss anomaly point is determined, wherein the absolute value of the second differential of the second differential anomaly point is greater than a preset value; the second differential anomaly point indicates that the fiber loss distribution at that point is uneven; the determination of the loss anomaly point based on the second differential anomaly point includes: if the distance between the current second differential anomaly point and the next adjacent second differential anomaly point is equal to L, then the current second differential anomaly point is taken as a loss anomaly point. If the location corresponding to the strain anomaly point is also the loss anomaly point, then that location is taken as the damage location of the carbon fiber conductor.

2. The carbon fiber conductor damage detection method according to claim 1, characterized in that, The determination of strain anomaly points based on the first differential anomaly point includes: If the distance between two first differential anomaly points is greater than L, and the strain at each point between the two first differential anomaly points is greater than a preset value, then the center point of the two first differential anomaly points is taken as the strain anomaly point.

3. The method for detecting damage to carbon fiber conductors according to claim 1, characterized in that, The determination of loss anomalies based on the second differential anomaly point includes: If the distance between two second differential anomalies is greater than L, and all points between the two second differential anomalies are second differential anomalies, then the center point of the two second differential anomalies is taken as the loss anomaly point.

4. The method for detecting damage to carbon fiber conductors according to claim 1, characterized in that, After stating that if the location corresponding to the strain anomaly point is also a loss anomaly point, then that location will be taken as the damage location of the carbon fiber conductor, the method further includes: If the distance between the location of the strain anomaly point and the location of any loss anomaly point is less than a preset value, then that location is taken as the damage location of the carbon fiber conductor.

5. The method for detecting damage to carbon fiber conductors according to claim 4, characterized in that, After calculating the difference between the loss at each point and the loss at the previous adjacent point, as the second difference for that point, the following steps are also included: If the second difference at that point is greater than a threshold, and the loss at that point is lower than a preset value, then the location of that point is taken as the damage location of the carbon fiber conductor.

6. A carbon fiber conductor damage detection device, characterized in that, The carbon fiber conductor includes an optical fiber, and the device includes: The acquisition module is used to acquire the strain and loss of n points on the optical fiber, wherein the n points are uniformly distributed along the transmission direction of the backscattered light of the optical fiber, with a spacing of L and n>3. The first calculation module is used to calculate the difference between the strain at each point and the strain at the previous adjacent point, which is used as the first difference at that point. The first confirmation module is used to determine strain anomaly points based on the first differential anomaly point, wherein the absolute value of the first difference of the first differential anomaly point is greater than a preset value; the first differential anomaly point indicates that the fiber strain distribution at that point is uneven; the determination of strain anomaly points based on the first differential anomaly point includes: if the distance between the current first differential anomaly point and the next adjacent first differential anomaly point is equal to L, then the current first differential anomaly point is taken as a strain anomaly point. The second calculation module is used to calculate the difference between the loss at each point and the loss at the previous adjacent point, which is used as the second difference for that point. The second confirmation module is used to determine loss anomaly points based on the second differential anomaly point, wherein the absolute value of the second differential of the second differential anomaly point is greater than a preset value; the second differential anomaly point indicates that the fiber loss distribution at that point is uneven; determining the loss anomaly point based on the second differential anomaly point includes: if the distance between the current second differential anomaly point and the next adjacent second differential anomaly point is equal to L, then the current second differential anomaly point is taken as the loss anomaly point. The damage location module is used to identify the location of the carbon fiber conductor as the damage location if the location corresponding to the strain anomaly point is also the loss anomaly point.

7. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the steps of the carbon fiber conductor damage detection method as described in any one of claims 1 to 5.

8. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by the processor, it implements the steps of the carbon fiber conductor damage detection method as described in any one of claims 1 to 5.

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