Damage detection device, method and equipment for cable insulation layer
Through the high-image processing technology, the damage situation and type of cable insulation layer is identified, which solves the problem of difficulty in detecting damage to cable insulation layer in a timely and accurate manner in the prior art, and improves the efficiency and accuracy of damage recognition.
Patent Information
- Application Number
- CN202411309880.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-19
- Publication Date
- 2025-02-25
AI Technical Summary
The prior art is difficult to detect the damage of the cable insulation layer in a timely and accurate manner, resulting in possible leakage, local discharge and other phenomena, affecting the normal operation of the cable.
The height image acquisition module obtains the height image of the cable insulation layer, the height information determination module identifies the outer surface height information of the cable insulation layer, the damage condition determination module extracts feature data in the height information, identifies whether there are broken features, and determines the type of damage when there is brokenness.
Improve the efficiency and accuracy of damage identification of cable insulation layer, and avoid greater losses caused by failure to detect damage in time.
Smart Images
Figure CN119515768A_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the technical field of electric power facilities, and specifically relates to a device, method and equipment for detecting damage to a cable insulation layer. Background Art
[0002] The cable insulation layer is a key part in the structure of wires and cables. Its main function is to prevent current from passing through the wire or cable sheath into the surrounding environment or other conductors, thereby preventing electrical accidents such as electric shock and short circuit.
[0003] At present, during the production or transportation of cable insulation, collisions and other external forces are inevitable, which may lead to insulation damage. If the insulation damage is not identified in time and the damaged insulation is directly put into use, it will cause leakage and partial discharge in the cable, seriously affecting the normal operation of the cable. The manual inspection method requires a lot of time and effort, and there may be problems such as missed inspections and wrong inspections.
[0004] Therefore, how to timely detect whether the insulation layer of the cable is damaged is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention
[0005] The embodiments of the present application provide a device, method and equipment for detecting damage to the cable insulation layer, the purpose of which is to determine the damage condition and damage type of the cable insulation layer based on the height image, which is beneficial to improving the efficiency and accuracy of identifying damage to the cable insulation layer and avoiding causing greater losses.
[0006] In a first aspect, an embodiment of the present application provides a device for detecting damage to an insulation layer of a cable, the device comprising:
[0007] A height image acquisition module is used to acquire a height image of the cable insulation layer;
[0008] A height information determination module, used for identifying the height information of the outer surface of the cable insulation layer according to the height image;
[0009] A damage condition determination module is used to extract characteristic data from the height information and identify whether there is a damage feature in the characteristic data; if so, determining whether the cable insulation layer is damaged;
[0010] The damage type determination module is used to match the damage feature with the pre-stored damage type feature when the cable insulation layer is damaged, and determine the damage type of the cable insulation layer according to the matching result.
[0011] Furthermore, the height information determination module is specifically used to:
[0012] Get the collection interval;
[0013] In the height image, height information is collected in the extension direction of the outer surface of the cable insulation layer at a collection interval, and the collection position is recorded.
[0014] Furthermore, the damage condition determination module is specifically used to:
[0015] The height information is counted according to the acquisition positions, the difference of the height information of adjacent acquisition positions is calculated, and it is identified whether there is a difference greater than a threshold. If so, it is determined that there is a damaged data feature in the height information.
[0016] Furthermore, the damage condition determination module is also used to:
[0017] Get the cable radius;
[0018] Determine the height change information of the outer surface of the cable insulation layer at the same collection position according to the cable radius;
[0019] Acquiring the curved surface height data of the outer surface of the cable insulation layer at the same acquisition position;
[0020] The curved surface height data is matched with the height change information. If they are inconsistent, it is determined that there are damaged data features in the height information.
[0021] Furthermore, the device also includes:
[0022] A thickness information determination module, used for identifying the outer surface height of the cable insulation layer according to the height image;
[0023] Obtaining the inner surface height of the cable insulation layer by laser scanning technology;
[0024] The difference between the outer surface height and the inner surface height is calculated as the thickness information of the cable insulation layer.
[0025] Furthermore, the damage condition determination module is also used to:
[0026] Obtaining the standard thickness of the cable insulation layer;
[0027] The difference between the thickness information and the standard thickness is calculated, and when the difference is greater than a preset error range, it is determined that there is a damaged data feature in the thickness information.
[0028] Furthermore, the damage type determination module is also used to:
[0029] When the insulation layer of the cable is damaged, obtaining the damaged area and the damaged depth of the damaged area;
[0030] The damage area and the damage depth are matched with pre-stored damage type features, and the damage type corresponding to the damage type feature with the highest matching degree with the damage area and the damage depth is obtained as the damage type of the cable insulation layer.
[0031] In a second aspect, an embodiment of the present application provides a method for detecting damage to an insulation layer of a cable, the method comprising:
[0032] Get height images of cable insulation;
[0033] Identify height information of the outer surface of the cable insulation layer according to the height image;
[0034] Extracting characteristic data from the height information, and identifying whether there is a damage feature in the characteristic data; if so, determining that the insulation layer of the cable is damaged;
[0035] In the case that the cable insulation layer is damaged, the damage feature is matched with a pre-stored damage type feature, and the damage type of the cable insulation layer is determined according to the matching result.
[0036] Further, identifying the height information of the outer surface of the cable insulation layer according to the height image includes:
[0037] Get the collection interval;
[0038] In the height image, height information is collected in the extension direction of the outer surface of the cable insulation layer at a collection interval, and the collection position is recorded.
[0039] In a third aspect, an embodiment of the present application provides an electronic device, which includes a processor, a memory, and a program or instruction stored in the memory and executable on the processor, wherein the program or instruction, when executed by the processor, implements the steps of the method described in the first aspect.
[0040] In a fourth aspect, an embodiment of the present application provides a readable storage medium, on which a program or instruction is stored, and when the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented.
[0041] In a fifth aspect, an embodiment of the present application provides a chip, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the method described in the first aspect.
[0042] In the embodiment of the present application, the height image acquisition module is used to acquire the height image of the cable insulation layer; the height information determination module is used to identify the height information of the outer surface of the cable insulation layer based on the height image; the damage condition determination module is used to extract the feature data in the height information and identify whether there is a damage feature in the feature data; if so, it is determined that the cable insulation layer is damaged; the damage type determination module is used to match the damage feature with the pre-stored damage type feature when the cable insulation layer is damaged, and determine the damage type of the cable insulation layer based on the matching result. Through the above-mentioned cable insulation layer damage detection device, the damage condition and damage type of the cable insulation layer can be determined based on the height image, which is conducive to improving the efficiency and accuracy of cable insulation layer damage identification and avoiding greater losses. BRIEF DESCRIPTION OF THE DRAWINGS
[0043] Figure 1 It is a structural schematic diagram of a cable insulation layer damage detection device provided in Example 1 of the present application;
[0044] Figure 2 It is a structural schematic diagram of a cable insulation layer damage detection device provided in Embodiment 2 of the present application;
[0045] Figure 3 It is a structural schematic diagram of a cable insulation layer damage detection device provided in Embodiment 3 of the present application;
[0046] Figure 4 It is a schematic flow chart of a method for detecting damage to the cable insulation layer provided in the fourth embodiment of the present application;
[0047] Figure 5 It is a schematic diagram of the structure of an electronic device provided in Example 5 of the present application. DETAILED DESCRIPTION
[0048] In order to make the purpose, technical scheme and advantages of the present application clearer, the specific embodiments of the present application are further described in detail below in conjunction with the accompanying drawings. It is understood that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for the convenience of description, only the part related to the present application but not all the contents are shown in the accompanying drawings. Before discussing the exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flow charts. Although the flow chart describes each operation (or step) as a sequential process, many of the operations therein can be implemented in parallel, concurrently or simultaneously. In addition, the order of each operation can be rearranged. The process can be terminated when its operation is completed, but it can also have additional steps not included in the accompanying drawings. The process can correspond to a method, a function, a procedure, a subroutine, a subprogram, etc.
[0049] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.
[0050] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.
[0051] In the following, in conjunction with the accompanying drawings, the cable insulation layer damage detection device, method and equipment provided in the embodiments of the present application are described in detail through specific embodiments and their application scenarios.
[0052] Embodiment 1
[0053] Figure 1 It is a structural schematic diagram of a cable insulation layer damage detection device provided in Example 1 of the present application.
[0054] like Figure 1 As shown, the specific steps include:
[0055] A height image acquisition module 101 is used to acquire a height image of a cable insulation layer;
[0056] A height information determination module 102, configured to identify height information of an outer surface of the cable insulation layer according to the height image;
[0057] A damage condition determination module 103 is used to extract characteristic data from the height information and identify whether there is a damage feature in the characteristic data; if so, it is determined that the cable insulation layer is damaged;
[0058] The damage type determination module 104 is used to match the damage feature with the pre-stored damage type feature when the cable insulation layer is damaged, and determine the damage type of the cable insulation layer according to the matching result.
[0059] The application scenario of this solution may be a scenario of identifying whether the insulation layer of a cable is damaged.
[0060] Based on the above scenario, it can be understood that the executor of this scenario can be a detection device for identifying the cable insulation layer, or a smart terminal connected to the detection device. For example, the smart terminal can include a desktop computer, a laptop computer, and a tablet computer, etc., and no excessive limitations are made here.
[0061] The height image acquisition module 101 may be an image collector, which may be disposed above the cable to be tested and used to acquire a height image of the cable insulation layer.
[0062] Cable insulation layer refers to the component that covers the periphery of the wire and acts as an electrical insulator. The cable insulation layer can ensure that the transmitted current or electromagnetic waves and light waves only travel along the wire and do not flow outside, the potential on the conductor can be isolated, and it can also prevent the wire from being directly exposed to the external environment and being subjected to adverse effects such as mechanical damage and chemical corrosion.
[0063] Height images can be a special type of image. Height images record the distance information from the image collector to each point in the scene and display these distance values as pixel values. Height images can directly reflect the geometric shape of the visible surface of the cable and are a form of expression of three-dimensional spatial information on a two-dimensional image.
[0064] A method for obtaining a height image of the cable insulation layer is that an image sensor emits infrared light pulses to the scene where the cable is located, and captures the infrared light pulses reflected by objects such as the cable. The time difference between the emission of the infrared light pulse and its capture by the receiver is accurately measured, and the product of half of the time difference and the propagation speed of the infrared light pulse is calculated as the height information of the current pixel point. The above process is repeated for each pixel point to obtain a height image of the entire scene.
[0065] The height information determination module 102 may be a program design for the intelligent terminal to identify the height information of the outer surface of the cable insulation layer in the height image. Specifically, the height information of the outer surface of the cable insulation layer may be identified by extracting the value of the pixel point at the position of the cable in the height image as the height information of the corresponding position on the outer surface of the cable insulation layer.
[0066] The damage determination module 103 may be a program design for the intelligent terminal to determine whether the cable insulation layer is damaged according to the height information of the outer surface of the cable insulation layer. Specifically, the characteristic data may be data characteristics such as the height value change trend and the height value difference in the height information of the cable insulation layer surface.
[0067] The damage feature can be the characteristic data in the height information collected when the cable insulation layer is damaged. For example, if there is a gap on the outer surface of the cable insulation layer, the gap is farther away from the image collector than other parts, and the height value at the gap is significantly greater than the height data at other positions, then in the height information, there is a height value that suddenly increases and then quickly recovers, which may be a damage feature of the cable insulation layer having a gap.
[0068] The method of extracting characteristic data from the height information can be to standardize the height information, that is, each variable is subtracted from its mean and divided by its standard deviation, so that the mean of each variable is 0 and the variance is 1. Calculate the covariance matrix of the standardized data and the eigenvalues and eigenvectors of the covariance matrix, where the eigenvalue represents the amount of variance explained by each principal component, and the eigenvector describes how the data is transformed along the new principal component. Select the first few most important principal components according to the size of the eigenvalue. Usually, the eigenvectors corresponding to the eigenvalues that explain most of the total variance of the data, for example, 80% or 90%, are selected as principal components. Use the selected principal components as the axes of the new coordinate system, project the original data into this new coordinate system, and obtain the data representation after dimensionality reduction. Use this data representation as the characteristic data of the current height information.
[0069] A method for determining whether the cable insulation layer is damaged may be to predict the possible damage conditions of the cable insulation layer in advance and obtain the damage characteristics under various damage conditions. After extracting the feature data in the height information, the feature data is matched with the damage characteristics obtained in advance. If there is no damage feature and it matches the current feature data, it is determined that the cable insulation layer is not damaged; if there is a damage feature and it matches the current feature data, it is determined that the cable insulation layer is damaged.
[0070] The damage type determination module 104 may be a program design of the intelligent terminal to determine the damage type of the cable insulation layer. Specifically, the damage type may be a damage category classified according to the severity of damage to the cable insulation layer, such as holes, cracks, and peeling.
[0071] The damage type feature may be to predict the possible damage types of the cable insulation layer in advance, and obtain the characteristic data of the cable insulation layer with damage conditions of each damage type as the damage type feature corresponding to each damage type.
[0072] The method for determining the damage type of the cable insulation layer is that, when it is determined that the cable insulation layer is damaged, the damage feature in the identified feature information is matched with the damage type feature obtained in advance, and the damage type corresponding to the damage type feature with the highest degree of match with the damage feature is used as the damage type of the current cable insulation layer.
[0073] Based on the above solution, optionally, the damage type determination module is further used to:
[0074] When the insulation layer of the cable is damaged, obtaining the damaged area and the damaged depth of the damaged area;
[0075] The damage area and the damage depth are matched with pre-stored damage type features, and the damage type corresponding to the damage type feature with the highest matching degree with the damage area and the damage depth is obtained as the damage type of the cable insulation layer.
[0076] The damaged area can be the area occupied by the damaged position on the outer surface of the cable insulation layer. For example, when there is a hole in the cable insulation layer, the damaged area is the area of the hole; when there is a crack in the cable insulation layer, the damaged area can be recorded as the area of the region where the crack is located.
[0077] The damage depth may be the difference between the height information of the outer surface of the cable insulation layer at the damaged position and the outer surface of the cable insulation layer without damage. For example, if the height information of the outer surface of the cable insulation layer without damage is 5.00 cm and the height information of the outer surface of the cable insulation layer at the damaged position is 5.18 cm, then the damage depth is 0.18 cm.
[0078] Correspondingly, the method for determining the damage type of the cable insulation layer can be to match the damage area and the damage depth with the pre-stored damage type features, and among the damage type features in which the damage area matches the area features in the damage type features to a high degree, obtain the damage type corresponding to the damage type feature in which the damage depth matches the depth features in the damage type features to the highest degree as the damage type of the insulation layer of the swing cable.
[0079] The advantage of this arrangement is that the type of damage to the cable insulation layer can be determined based on the damaged area and damage depth of the damaged location, which helps to increase the accuracy of the determination of the damage type and assist maintenance personnel in developing repair plans for abnormalities in the cable insulation layer.
[0080] In the embodiment of the present application, the height image acquisition module is used to acquire the height image of the cable insulation layer; the height information determination module is used to identify the height information of the outer surface of the cable insulation layer based on the height image; the damage condition determination module is used to extract the feature data in the height information and identify whether there is a damage feature in the feature data; if so, it is determined that the cable insulation layer is damaged; the damage type determination module is used to match the damage feature with the pre-stored damage type feature when the cable insulation layer is damaged, and determine the damage type of the cable insulation layer based on the matching result. Through the above-mentioned cable insulation layer damage detection device, the damage condition and damage type of the cable insulation layer can be determined based on the height image, which is conducive to improving the efficiency and accuracy of cable insulation layer damage identification and avoiding greater losses.
[0081] Embodiment 2
[0082] Figure 2 It is a structural schematic diagram of the cable insulation layer damage detection device provided in Example 2 of the present application. This solution makes a better improvement on the above-mentioned embodiment, and the specific improvement is: the height information determination module is specifically used to: obtain the acquisition interval; collect height information in the extension direction of the outer surface of the cable insulation layer in the height image according to the acquisition interval, and record the acquisition position.
[0083] like Figure 2 As shown, specifically including the following:
[0084] A height image acquisition module 201 is used to acquire a height image of the cable insulation layer;
[0085] A height information determination module 202, configured to identify height information of an outer surface of the cable insulation layer according to the height image;
[0086] A damage condition determination module 203 is used to extract characteristic data from the height information and identify whether there is a damage feature in the characteristic data; if so, it is determined that the cable insulation layer is damaged;
[0087] The damage type determination module 204 is used to match the damage feature with the pre-stored damage type feature when the cable insulation layer is damaged, and determine the damage type of the cable insulation layer according to the matching result.
[0088] Wherein, the height information determination module is specifically used to obtain the collection interval;
[0089] In the height image, height information is collected in the extension direction of the outer surface of the cable insulation layer at a collection interval, and the collection position is recorded.
[0090] The collection interval may be the interval between adjacent collection positions on the outer surface of the cable insulation layer when obtaining the height information of the cable insulation layer. The collection interval may be determined by the staff according to the detection accuracy and the flatness of the outer surface of the cable insulation layer.
[0091] The collection interval may be obtained by a staff member predetermining the collection interval and inputting it into the smart terminal through a terminal device, which then receives it.
[0092] The method for collecting height information can be that after collecting the height image, starting from one end of the cable, along the extension direction of the cable, the height information is read once every collection interval, and the position of the current reading height information is recorded, and the read height information is associated with the recorded collection position and stored.
[0093] The advantage of this arrangement of the present invention is that the height information, frequency and position can be recorded according to the extension direction of the cable, which is conducive to providing continuous and neat data when judging the damage of the cable insulation layer in the subsequent process, so as to facilitate the reading and analysis of the data by the intelligent terminal.
[0094] Based on the above solution, optionally, the damage condition determination module is specifically used to:
[0095] The height information is counted according to the acquisition positions, the difference of the height information of adjacent acquisition positions is calculated, and it is identified whether there is a difference greater than a threshold. If so, it is determined that there is a damaged data feature in the height information.
[0096] The threshold value may be the maximum floating range of the thickness of the outer surface of the insulation layer of the same cable caused by errors such as manufacturing process when there is no damage on the outer surface of the insulation layer of the cable.
[0097] A method for determining the presence of damaged data features in the height information may be to record the height information according to the collection positions in the extension direction of the cable, calculate the difference in height information of adjacent collection positions, and compare the difference with a threshold. If the difference is less than the threshold, the cable insulation layer at the current collection position is within the error range and is not damaged; if the difference is greater than the threshold, the cable insulation layer at the current collection position is damaged, resulting in obvious inconsistency in the height information of the cable insulation layer.
[0098] The advantage of this arrangement of the present invention is that it is possible to determine whether the cable insulation layer is damaged by using the height information difference between adjacent acquisition positions, thereby providing a basis for identifying damage to the cable insulation layer and improving the accuracy of the judgment of damage to the cable insulation layer.
[0099] Based on the above solution, optionally, the damage condition determination module is further used to:
[0100] Get the cable radius;
[0101] Determine the height change information of the outer surface of the cable insulation layer at the same collection position according to the cable radius;
[0102] Acquiring the curved surface height data of the outer surface of the cable insulation layer at the same acquisition position;
[0103] The curved surface height data is matched with the height change information. If they are inconsistent, it is determined that there are damaged data features in the height information.
[0104] The cable radius can be the straight-line distance from the center of the cross section of the cable being tested to a point on the edge of the cross section.
[0105] The surface height data may be the height data of each position in the surface along the circumference of the cable cross section at the same acquisition position of the outer surface of the cable insulation layer.
[0106] A method for determining the height change information of the outer surface of the cable insulation layer at the same acquisition position can be to establish a surface model of the cable insulation layer at the same acquisition position based on the cable radius, determine the height information of the highest point of the surface model through the distance between the image collector in the height image acquisition module and the highest point of the cable insulation layer, calculate the height information of each point in the surface model using the height information of the highest point of the surface model and the function of the surface model, obtain the relationship between the height information and the surface position, and then obtain the height change information of the outer surface of the cable insulation layer relative to the image collector at the same acquisition position.
[0107] The method of obtaining the surface height data of the outer surface of the cable insulation layer at the same acquisition position may be to read the surface height data of the current acquisition position in the height image of the cable insulation layer.
[0108] Correspondingly, a method for determining whether there are damaged data features in the height information may be to align the height information of the highest point in the calculated height change information with the height information of the highest point in the collected surface height data to obtain height change information that matches the current collection position, and match the surface height data with the height information at other positions in the height change information according to the surface position. If they all match consistently, then there are no damaged data features in the height information; if there is an inconsistency between the surface height data and the height change information, then there are damaged data features in the height information.
[0109] The advantage of this arrangement of the present scheme is that it can detect whether there is damage on the surface of the insulation layer on the side of the cable through height change information, which is conducive to increasing the recognition range of insulation layer damage and making the judgment of whether the cable insulation layer is damaged more in line with the actual situation.
[0110] Embodiment 3
[0111] Figure 3 It is a structural schematic diagram of the cable insulation layer damage detection device provided in Example 3 of the present application. This solution makes a better improvement on the above-mentioned embodiment, and the specific improvement is: the acquisition cycle determination module is specifically used for: the device also includes: a thickness information determination module, which is used to identify the outer surface height of the cable insulation layer according to the height image; obtain the inner surface height of the cable insulation layer by laser scanning technology; calculate the difference between the outer surface height and the inner surface height as the thickness information of the cable insulation layer.
[0112] like Figure 3 As shown, specifically including the following:
[0113] A height image acquisition module 301 is used to acquire a height image of the cable insulation layer;
[0114] A height information determination module 302 is used to identify the height information of the outer surface of the cable insulation layer according to the height image;
[0115] A damage condition determination module 303 is used to extract characteristic data from the height information and identify whether there is a damage feature in the characteristic data; if so, it is determined that the cable insulation layer is damaged;
[0116] A damage type determination module 304 is used to match the damage feature with a pre-stored damage type feature when the cable insulation layer is damaged, and determine the damage type of the cable insulation layer according to the matching result;
[0117] A thickness information determination module 305, configured to identify the outer surface height of the cable insulation layer according to the height image;
[0118] Obtaining the inner surface height of the cable insulation layer by laser scanning technology;
[0119] The difference between the outer surface height and the inner surface height is calculated as the thickness information of the cable insulation layer.
[0120] The inner surface of the cable insulation layer can be the side where the cable insulation layer contacts the inner core of the cable. The thickness data of the cable insulation layer can be obtained by subtracting the inner surface height from the outer surface height of the cable insulation layer.
[0121] The outer surface height of the cable insulation layer may be identified by reading the value of each pixel point of the cable in the cable insulation layer height image as the outer surface height of the cable insulation layer.
[0122] The method of obtaining the inner surface height of the cable insulation layer by laser scanning technology is to use a laser scanner to emit a laser beam, and the laser beam is irradiated onto the inner surface of the cable insulation layer. After the laser beam is reflected on the inner surface of the insulation layer, the scanner receives the reflected laser beam from the inner surface of the insulation layer and records the reception time. According to the time difference or phase difference between the emission and reception of the laser, combined with the propagation speed of the laser, the distance from the laser beam to the inner surface of the insulation layer is calculated, thereby obtaining the height information of the inner surface.
[0123] The thickness information of the cable insulation layer can be obtained by calculating the difference between the outer surface of the cable insulation layer and the inner surface of the cable insulation layer at the same acquisition position, and taking the absolute value of the difference as the thickness information of the cable insulation layer at the current position.
[0124] The advantage of this arrangement of the present scheme is that the thickness of the cable insulation layer can be obtained, thereby avoiding the phenomenon that the height information of the cable insulation layer cannot accurately reflect the damage of the cable insulation layer due to problems such as bulging of the insulation layer, which is conducive to making the damage detection of the cable insulation layer more accurate and effective.
[0125] Based on the above solution, optionally, the damage condition determination module is further used to:
[0126] Obtaining the standard thickness of the cable insulation layer;
[0127] The difference between the thickness information and the standard thickness is calculated, and when the difference is greater than a preset error range, it is determined that there is a damaged data feature in the thickness information.
[0128] The standard thickness may be the thickness value that the current model of cable should have as specified in the cable manufacturing process requirements or safety standards.
[0129] The preset error range may be the maximum error different from the standard thickness caused by errors in measurement, manufacturing process, etc.
[0130] A method for determining whether there are damaged data features in the thickness information can be to calculate the difference between the currently acquired thickness information and the standard thickness, take the absolute value of the difference, and compare the absolute value with a preset error range. If the absolute value is less than the preset error range, it is determined that there are no damaged data features in the thickness information; if the absolute value is greater than the preset error range, it is determined that there are damaged data features in the thickness information.
[0131] The advantage of this arrangement of the present invention is that it is possible to determine whether the cable insulation layer is damaged by detecting whether the thickness of the cable insulation layer meets the standard thickness, thereby providing an effective judgment standard for detecting damage to the cable insulation layer and helping to improve the accuracy of identifying damage to the cable insulation layer.
[0132] Embodiment 4
[0133] Figure 4 It is a flow chart of the cable insulation layer damage detection method provided in Example 4 of the present application.
[0134] like Figure 4 As shown, the specific steps include:
[0135] S401, obtaining a height image of a cable insulation layer;
[0136] S402, identifying height information of the outer surface of the cable insulation layer according to the height image;
[0137] S403, extracting feature data from the height information, and identifying whether there is a damage feature in the feature data; if so, determining that the cable insulation layer is damaged;
[0138] S404: When the insulation layer of the cable is damaged, match the damage feature with pre-stored damage type features, and determine the damage type of the insulation layer of the cable according to the matching result.
[0139] Optionally, identifying height information of an outer surface of the cable insulation layer according to the height image includes:
[0140] Get the collection interval;
[0141] In the height image, height information is collected in the extension direction of the outer surface of the cable insulation layer at a collection interval, and the collection position is recorded.
[0142] In an embodiment of the present application, a height image of a cable insulation layer is obtained; height information of the outer surface of the cable insulation layer is identified based on the height image; feature data in the height information is extracted to identify whether there is a damage feature in the feature data; if so, it is determined that the cable insulation layer is damaged; if the cable insulation layer is damaged, the damage feature is matched with a pre-stored damage type feature, and the damage type of the cable insulation layer is determined based on the matching result. Through the above-mentioned cable insulation layer damage detection method, the damage condition and damage type of the cable insulation layer can be determined based on the height image, which is conducive to improving the efficiency and accuracy of cable insulation layer damage identification and avoiding greater losses.
[0143] The cable insulation layer damage detection method provided in the embodiment of the present application corresponds to the cable insulation layer damage detection device provided in the above embodiment, and has the same functional modules and beneficial effects. To avoid repetition, they will not be described here.
[0144] Embodiment 5
[0145] like Figure 5As shown, an embodiment of the present application also provides an electronic device 500, including a processor 501, a memory 502, and a program or instruction stored in the memory 502 and executable on the processor 501. When the program or instruction is executed by the processor 501, each process of the above-mentioned cable insulation layer damage detection device embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.
[0146] It should be noted that the electronic devices in the embodiments of the present application include the mobile electronic devices and non-mobile electronic devices mentioned above.
[0147] Embodiment 6
[0148] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, each process of the above-mentioned cable insulation layer damage detection device embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.
[0149] The processor is a processor in the electronic device described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.
[0150] Embodiment 7
[0151] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned cable insulation layer damage detection device embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.
[0152] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.
[0153] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.
[0154] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM / RAM, a disk, or an optical disk), and includes a number of instructions for a terminal (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in each embodiment of the present application.
[0155] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.
[0156] The above are only preferred embodiments of the present application and the technical principles used. The present application is not limited to the specific embodiments described herein, and various obvious changes, readjustments and substitutions that can be made by those skilled in the art will not deviate from the scope of protection of the present application. Therefore, although the present application is described in more detail through the above embodiments, the present application is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the claims.
Claims
1. A cable insulation layer damage detection device, characterized in that: The device comprises: A height image acquisition module is used to acquire a height image of the cable insulation layer; A height information determination module, used for identifying the height information of the outer surface of the cable insulation layer according to the height image; A damage condition determination module is used to extract characteristic data from the height information and identify whether there is a damage feature in the characteristic data; if so, determining whether the cable insulation layer is damaged; The damage type determination module is used to match the damage feature with the pre-stored damage type feature when the cable insulation layer is damaged, and determine the damage type of the cable insulation layer according to the matching result.
2. The cable insulation layer damage detection device according to claim 1, characterized in that: The height information determination module is specifically used for: Get the collection interval; In the height image, height information is collected in the extension direction of the outer surface of the cable insulation layer at a collection interval, and the collection position is recorded.
3. The cable insulation layer damage detection device according to claim 2, characterized in that: The damage condition determination module is specifically used for: The height information is counted according to the acquisition positions, the difference of the height information of adjacent acquisition positions is calculated, and it is identified whether there is a difference greater than a threshold. If so, it is determined that there is a damaged data feature in the height information.
4. The cable insulation layer damage detection device according to claim 2, characterized in that: The damage condition determination module is also used for: Get the cable radius; Determine the height change information of the outer surface of the cable insulation layer at the same collection position according to the cable radius; Acquiring the curved surface height data of the outer surface of the cable insulation layer at the same acquisition position; The curved surface height data is matched with the height change information. If they are inconsistent, it is determined that there are damaged data features in the height information.
5. The cable insulation layer damage detection device according to claim 1, characterized in that: The device also includes: A thickness information determination module, used for identifying the outer surface height of the cable insulation layer according to the height image; Obtaining the inner surface height of the cable insulation layer by laser scanning technology; The difference between the outer surface height and the inner surface height is calculated as the thickness information of the cable insulation layer.
6. The cable insulation layer damage detection device according to claim 5, wherein the damage condition determination module is further used for: Obtaining the standard thickness of the cable insulation layer; The difference between the thickness information and the standard thickness is calculated, and when the difference is greater than a preset error range, it is determined that there is a damaged data feature in the thickness information.
7. The cable insulation layer damage detection device according to claim 1, characterized in that: The damage type determination module is further used to: When the insulation layer of the cable is damaged, obtaining the damaged area and the damaged depth of the damaged area; The damage area and the damage depth are matched with pre-stored damage type features, and the damage type corresponding to the damage type feature with the highest matching degree with the damage area and the damage depth is obtained as the damage type of the cable insulation layer.
8. A method for detecting damage to a cable insulation layer, characterized in that: The method comprises: Get a height image of the cable insulation; Identify height information of the outer surface of the cable insulation layer according to the height image; Extracting characteristic data from the height information, and identifying whether there is a damage feature in the characteristic data; if so, determining that the insulation layer of the cable is damaged; In the case that the cable insulation layer is damaged, the damage feature is matched with a pre-stored damage type feature, and the damage type of the cable insulation layer is determined according to the matching result.
9. The method for detecting damage to the cable insulation layer according to claim 8, characterized in that: Identifying height information of the outer surface of the cable insulation layer according to the height image includes: Get the collection interval; In the height image, height information is collected in the extension direction of the outer surface of the cable insulation layer at a collection interval, and the collection position is recorded.
10. An electronic device, characterized in that: It comprises a processor, a memory and a program or instruction stored in the memory and executable on the processor, wherein when the program or instruction is executed by the processor, the steps of the cable insulation layer damage detection method as described in any one of claims 8 to 9 are implemented.