CN117289075B - Cable performance detection method and system - Google Patents
Cable performance detection method and system Download PDFInfo
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- CN117289075B CN117289075B CN202311156999.4A CN202311156999A CN117289075B CN 117289075 B CN117289075 B CN 117289075B CN 202311156999 A CN202311156999 A CN 202311156999A CN 117289075 B CN117289075 B CN 117289075B
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- 238000001514 detection method Methods 0.000 title claims abstract description 178
- 238000010586 diagram Methods 0.000 claims abstract description 126
- 230000032683 aging Effects 0.000 claims abstract description 125
- 238000000034 method Methods 0.000 claims abstract description 59
- 238000002591 computed tomography Methods 0.000 claims abstract description 38
- 230000004927 fusion Effects 0.000 claims description 93
- 238000012545 processing Methods 0.000 claims description 32
- 238000000605 extraction Methods 0.000 claims description 14
- 238000004088 simulation Methods 0.000 claims description 14
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 11
- 238000007499 fusion processing Methods 0.000 claims description 11
- 229910052760 oxygen Inorganic materials 0.000 claims description 11
- 239000001301 oxygen Substances 0.000 claims description 11
- 238000004364 calculation method Methods 0.000 claims description 10
- 238000012163 sequencing technique Methods 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000011056 performance test Methods 0.000 claims 2
- 238000013145 classification model Methods 0.000 description 9
- 238000013528 artificial neural network Methods 0.000 description 2
- 238000013527 convolutional neural network Methods 0.000 description 2
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- 238000004590 computer program Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/083—Locating faults in cables, transmission lines, or networks according to type of conductors in cables, e.g. underground
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
- G01N23/04—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material
- G01N23/046—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material using tomography, e.g. computed tomography [CT]
Abstract
The invention discloses a cable performance detection method and a system, wherein the method comprises the following steps: intercepting a plurality of sample cables with the same length from a batch of cables to be detected; continuously aging a plurality of sample cables through the same aging environment; in the aging treatment process, CT scanning treatment is carried out on a plurality of sample cables in each preset acquisition period through the same CT scanning equipment, so as to obtain a scanning time sequence diagram corresponding to each sample cable in each acquisition period; carrying out electrical detection on a plurality of sample cables in each preset acquisition period through the same electrical detection equipment to obtain electrical time sequence data corresponding to each sample cable in each acquisition period; and after the aging treatment is finished, determining the performance detection result of the cable to be detected in batches based on the scanning time sequence diagram and the electrical time sequence data of each acquisition period. The invention considers the continuous influence of the use environment on the cable performance and improves the accuracy of cable performance detection.
Description
Technical Field
The invention relates to the technical field of cable detection, in particular to a cable performance detection method and system.
Background
The cable performance detection generally comprises detection of structural performance and electrical performance, the cable is aged under the influence of the use environment in the actual use process, so that the cable performance is changed, the change is generally an adverse change, namely, the cable performance is changed, the existing cable performance detection mainly detects the structural performance and the electrical performance independently, the influence of the use environment on the cable performance is not considered, the influence of the use scene on the cable performance is nonlinear, and simple linear estimation cannot be performed according to the independent detection result. Therefore, the existing cable performance detection has the problem of poor detection accuracy.
Disclosure of Invention
The embodiment of the invention provides a cable performance detection method, which aims to solve the problem that the existing cable performance detection is poor in detection accuracy. The continuous aging treatment is carried out on a plurality of sample cables through the same aging environment, in the aging treatment process, the scanning time sequence diagram and the electrical time sequence data of a plurality of acquisition periods are acquired, the structural change condition of the sample cables in the aging treatment process can be obtained through the scanning time sequence diagram of the plurality of acquisition periods due to the structural scanning time sequence diagram of the sample cables in the scanning time sequence diagram, and the electrical change condition of the sample cables in the aging treatment process can be obtained through the electrical time sequence data of the plurality of acquisition periods due to the electrical data of the sample cables in the electrical time sequence data, so that the performance of the sample cables in the aging treatment process is comprehensively detected, the continuous influence of the use environment on the cable performance is considered, and the accuracy of cable performance detection is improved.
In a first aspect, an embodiment of the present invention provides a method for detecting cable performance, where the method includes:
intercepting a plurality of sample cables with the same length from a batch of cables to be detected;
performing continuous aging treatment on a plurality of sample cables through the same aging environment, wherein the aging environment is obtained by simulating the use environment of the cables to be detected;
in the aging treatment process, carrying out CT scanning treatment on a plurality of sample cables in each preset acquisition period through the same CT scanning equipment to obtain scanning time charts corresponding to the sample cables in each acquisition period, wherein in one acquisition period, each sample cable corresponds to one scanning time chart, the scanning frame rate of each scanning time chart is the same, and the initial scanning time is different;
in the aging treatment process, carrying out electrical detection on a plurality of sample cables in each preset acquisition period through the same electrical detection equipment to obtain electrical time sequence data corresponding to each sample cable in each acquisition period, wherein in one acquisition period, each sample cable corresponds to one electrical time sequence data, the detection frame rate of the electrical time sequence data is the same as the scanning frame rate corresponding to the scanning time sequence diagram, and the initial detection time of the electrical time sequence data is the same as the initial scanning time corresponding to the scanning time sequence diagram;
And after the aging treatment is finished, determining the performance detection result of the cable to be detected in batches based on the scanning time sequence diagram and the electrical time sequence data of each acquisition period.
Optionally, before said subjecting a plurality of said sample cables to a continuous aging treatment through the same aging environment, the method further comprises:
acquiring use environment parameters of a cable to be detected, wherein the use environment parameters comprise at least one of temperature, humidity, pressure, oxygen concentration, air flow and scratch probability;
converting the using environment parameters into target simulation environment parameters under experimental conditions according to a conversion strategy between the using environment parameters and the simulation environment parameters under experimental conditions;
and performing environment simulation based on the target simulation environment parameters to obtain the aging environment corresponding to the to-be-detected batch of cables.
Optionally, the obtaining the usage environment parameter of the cable to be tested includes:
acquiring sample environment parameters of the same type of cables of the cables to be detected;
classifying the sample environment parameters to obtain the service environment types of the cables with the same type, grouping the sample environment parameters according to the service environment types to obtain sample environment parameter sets, wherein each sample environment parameter set corresponds to one service environment type;
Determining the type of the use environment of the cable to be detected according to the order data of the cable to be detected;
determining a sample environment parameter set of the to-be-detected batch cable according to the use environment type of the to-be-detected batch cable;
and determining at least one of temperature, humidity, pressure, oxygen concentration, air flow and scratch probability according to the sample environment parameter set to obtain the using environment parameter of the cable to be detected.
Optionally, in the aging process, CT scanning is performed on a plurality of sample cables in each preset acquisition period to obtain a scanning timing diagram corresponding to each sample cable in each acquisition period, including:
determining acquisition periods in the aging treatment process, wherein a preset time is reserved between two adjacent acquisition periods;
determining a start scan time for each of the sample cables based on a cycle start time of the acquisition cycle;
and when the initial scanning time of each sample cable is reached, CT scanning processing is carried out on each sample cable with a preset scanning step length, so as to obtain a scanning time sequence diagram corresponding to each sample cable in each acquisition period.
Optionally, in the aging process, performing electrical detection on a plurality of sample cables in each preset collection period to obtain electrical time sequence data corresponding to each sample cable in each collection period, where the electrical time sequence data includes:
determining a start detection time of the sample cable based on the start scanning time of the sample cable;
when the initial detection time of each sample cable is reached, carrying out electrical detection on each sample cable in a preset time step to obtain electrical time sequence data corresponding to each sample cable in each acquisition period, wherein the preset time step is the same as the preset scanning step in the time dimension.
Optionally, the determining, based on the scan timing diagrams and the electrical timing data of the respective acquisition periods, a performance detection result of the cable to be detected batch includes:
performing first fusion processing on the scanning time sequence diagrams of the same acquisition period to obtain a fusion time sequence diagram, and sequencing the fusion time sequence diagrams of different acquisition periods according to the sequence of the acquisition periods to obtain a sequenced fusion time sequence diagram;
and performing second fusion processing on the electrical time sequence data of the same acquisition period to obtain fusion time sequence data, and sequencing the fusion time sequence data of different acquisition periods according to the sequence of the acquisition periods to obtain sequenced fusion time sequence data;
And determining a performance detection result of the cable to be detected batch based on the sequenced fusion time sequence diagram and the sequenced fusion time sequence data.
Optionally, the determining the performance detection result of the to-be-detected batch cable based on the sequenced fusion timing diagram and the sequenced fusion timing data includes:
performing first feature extraction processing on the sequenced fusion time sequence diagram to obtain the structural change feature of the sample cable;
performing second feature extraction processing on the sequenced fusion time sequence data to obtain the electrical variation features of the sample cable;
and determining a performance detection result of the cable to be detected batch based on the structural change characteristics and the electrical change characteristics.
Optionally, the determining, based on the structural variation feature and the electrical variation feature, a performance detection result of the to-be-detected batch of cables includes:
performing variance calculation on the structural variation characteristics to obtain a first variance, and determining a structural performance detection result of the cable to be detected batch based on the first variance;
performing variance calculation on the electrical variation characteristics to obtain a second variance, and determining an electrical performance detection result of the cable to be detected batch based on the second variance;
And determining the performance detection result of the cable to be detected batch based on the structural performance detection result and the electrical performance detection result.
Optionally, the determining, based on the structural variation feature and the electrical variation feature, a performance detection result of the to-be-detected batch of cables includes:
performing feature fusion on the structural change features and the electrical change features to obtain fusion features;
classifying the fusion features to obtain classification results of the fusion features;
and determining the performance detection result of the cable to be detected in batches based on the classification result.
In a second aspect, an embodiment of the present invention further provides a cable performance detection system, including: the device comprises an intercepting device, an aging device, a first collecting device, a second collecting device and a processing device;
the intercepting device is used for intercepting a plurality of sample cables with the same length from the cables to be detected;
the aging device is used for continuously aging a plurality of sample cables through the same aging environment, and the aging environment is obtained by simulating the use environment of the cables to be detected;
The first acquisition device is used for carrying out CT scanning processing on a plurality of sample cables in each preset acquisition period through the same CT scanning equipment in the aging processing process to obtain scanning time sequence diagrams corresponding to the sample cables in each preset acquisition period, wherein in one acquisition period, each sample cable corresponds to one scanning time sequence diagram, the scanning frame rate of each scanning time sequence diagram is the same, and the initial scanning time is different;
the second acquisition device is used for carrying out electrical detection on a plurality of sample cables in each preset acquisition period through the same electrical detection equipment in the aging treatment process to obtain electrical time sequence data corresponding to each sample cable in each preset acquisition period, wherein in one acquisition period, each sample cable corresponds to one electrical time sequence data, the detection frame rate of the electrical time sequence data is the same as the scanning frame rate corresponding to the scanning time sequence chart, and the initial detection time of the electrical time sequence data is the same as the initial scanning time corresponding to the scanning time sequence chart;
and the processing device is used for determining the performance detection result of the cable to be detected batch based on the scanning time sequence diagram and the electrical time sequence data of each acquisition period after the aging treatment is finished.
In the embodiment of the invention, a plurality of sample cables with the same length are cut out from a batch of cables to be detected; performing continuous aging treatment on a plurality of sample cables through the same aging environment, wherein the aging environment is obtained by simulating the use environment of the cables to be detected; in the aging treatment process, carrying out CT scanning treatment on a plurality of sample cables in each preset acquisition period through the same CT scanning equipment to obtain scanning time sequence diagrams corresponding to the sample cables in each preset acquisition period, wherein in one acquisition period, each sample cable corresponds to one scanning time sequence diagram, the scanning frame rate of each scanning time sequence diagram is the same, and the initial scanning time is different; in the aging treatment process, carrying out electrical detection on a plurality of sample cables in each preset acquisition period through the same electrical detection equipment to obtain electrical time sequence data corresponding to each sample cable in each preset acquisition period, wherein in one acquisition period, each sample cable corresponds to one electrical time sequence data, the detection frame rate of the electrical time sequence data is the same as the scanning frame rate corresponding to the scanning time sequence diagram, and the initial detection time of the electrical time sequence data is the same as the initial scanning time corresponding to the scanning time sequence diagram; and after the aging treatment is finished, determining the performance detection result of the cable to be detected in batches based on the scanning time sequence diagram and the electrical time sequence data of each acquisition period. The continuous aging treatment is carried out on a plurality of sample cables through the same aging environment, in the aging treatment process, the scanning time sequence diagram and the electrical time sequence data of a plurality of acquisition periods are acquired, the structural change condition of the sample cables in the aging treatment process can be obtained through the scanning time sequence diagram of the plurality of acquisition periods due to the structural scanning time sequence diagram of the sample cables in the scanning time sequence diagram, and the electrical change condition of the sample cables in the aging treatment process can be obtained through the electrical time sequence data of the plurality of acquisition periods due to the electrical data of the sample cables in the electrical time sequence data, so that the performance of the sample cables in the aging treatment process is comprehensively detected, the continuous influence of the use environment on the cable performance is considered, and the accuracy of cable performance detection is improved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flowchart of a cable performance detection method according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The embodiment of the invention provides a cable performance detection system, which comprises: intercepting device, ageing device, first collection system, second collection system and processing apparatus.
The intercepting device can be a device which can cut a cable, such as a cable cutter, a cable cutter and the like. The aging device can be a cable aging test box. The first acquisition device may be a CT scanning system comprising a plurality of CT scanning apparatuses. The second collecting device may be an electrical property detecting system including a plurality of electrical property detecting devices, where the electrical property detecting devices may detect electrical property indexes such as current, resistance, capacitance, inductance, etc. of the sample cable. The processing device may be a server or an upper computer.
The intercepting device is used for intercepting a plurality of sample cables with the same length from the cables to be detected; the aging device is used for continuously aging a plurality of sample cables through the same aging environment, and the aging environment is obtained by simulating the use environment of the cables to be detected; the first acquisition device is used for performing CT scanning processing on a plurality of sample cables in each preset acquisition period through the same CT scanning equipment in the aging processing process to obtain a scanning time sequence diagram corresponding to each sample cable in each acquisition period, wherein in one acquisition period, each sample cable corresponds to one scanning time sequence diagram, the scanning frame rate of each scanning time sequence diagram is the same, and the initial scanning time is different; the second acquisition device is configured to electrically detect, in the aging process, the plurality of sample cables in each preset acquisition period by using the same electrical detection device, to obtain electrical time sequence data corresponding to each sample cable in each acquisition period, where in one acquisition period, each sample cable corresponds to one electrical time sequence data, a detection frame rate of the electrical time sequence data is the same as a scanning frame rate corresponding to the scanning time sequence diagram, and an initial detection time of the electrical time sequence data is the same as an initial scanning time corresponding to the scanning time sequence diagram; and the processing device is used for determining the performance detection result of the cable to be detected batch based on the scanning time sequence diagram and the electrical time sequence data of each acquisition period after the aging treatment is finished.
In the embodiment of the invention, continuous aging treatment is carried out on a plurality of sample cables through the same aging environment, in the aging treatment process, the scanning time sequence diagram and the electrical time sequence data of a plurality of acquisition periods are acquired, the structural scanning diagram of the sample cables in the aging treatment process can be obtained through the scanning time sequence diagram of the plurality of acquisition periods because of the structural scanning diagram of the sample cables in the scanning time sequence diagram, and the electrical change condition of the sample cables in the aging treatment process can be obtained through the electrical time sequence data of the plurality of acquisition periods because of the electrical data of the sample cables in the electrical time sequence data, so that the performance of the sample cables in the aging treatment process is comprehensively detected, the continuous influence of the use environment on the cable performance is considered, and the accuracy of cable performance detection is improved.
As shown in fig. 1, fig. 1 is a method flowchart of a cable performance detection method according to an embodiment of the present invention. The cable performance detection method comprises the following steps:
101. and intercepting a plurality of sample cables with the same length from the batch of cables to be detected.
In the embodiment of the present invention, the cables to be detected in batches may be understood as cables with the same model, the same manufacturing process and the same use environment, and may specifically be cables in the same batch under the same order.
The method can randomly select a preset number of cables from the cables to be detected, sample cables with the same length are intercepted in the selected cables through the intercepting device, and each selected cable intercepts only one section of corresponding sample cable. The length of the sample cable may be 10m. Or all cables in the batch of cables to be detected can be cut out into sample cables with the same length through the cutting device.
102. The plurality of sample cables are subjected to continuous aging treatment through the same aging environment.
In the embodiment of the invention, the aging environment is obtained by simulating the use environment of the cable to be detected.
Specifically, the usage environment can be confirmed according to the user order, and when the user submits the order, the corresponding usage environment can be filled in the order. After the sample cable is intercepted, the aging device is used for carrying out aging treatment on the sample cable in an aging continuous mode, so that the aging speed of the sample cable is accelerated. The aging treatment duration may be set to 150 hours to 230 hours, and may specifically be determined according to the type of the use environment, where different types of the use environment correspond to different aging treatment durations.
103. In the aging treatment process, CT scanning treatment is carried out on a plurality of sample cables in each preset acquisition period through the same CT scanning equipment, so as to obtain a scanning time sequence diagram corresponding to each sample cable in each preset acquisition period.
In the embodiment of the invention, in the aging treatment process, a plurality of acquisition periods can be preset, a certain interval time is arranged between adjacent acquisition periods, and the overheat condition caused by long-time continuous scanning of the CT scanning equipment can be avoided by setting the interval time between the acquisition periods. Each CT scanning device corresponds to one sample cable, each sample cable corresponds to one scanning time sequence diagram in one acquisition period, the scanning frame rate of each scanning time sequence diagram is the same, and the initial scanning positions are different. And after n acquisition periods, each sample cable correspondingly obtains n scanning time sequence diagrams, each scanning time sequence diagram comprises m scanning diagrams, and each scanning diagram corresponds to one scanning position on the sample cable.
104. In the aging treatment process, the same electrical detection equipment is used for carrying out electrical detection on a plurality of sample cables in each preset acquisition period, so as to obtain electrical time sequence data corresponding to each sample cable in each preset acquisition period.
In the embodiment of the invention, in one acquisition period, each sample cable corresponds to one piece of electrical time sequence data, the detection frame rate of the electrical time sequence data is the same as the scanning frame rate of the corresponding scanning time sequence diagram, and the initial detection time of the electrical time sequence data is the same as the initial scanning time of the corresponding scanning time sequence diagram. The initial scanning time is the time when the CT scanning equipment reaches the initial scanning position to scan.
Specifically, for the same sample cable, the initial scan time is the same as the initial test time, and each scan time is the same as each electrical test time. For different sample cables, the initial scanning positions and the initial scanning times are different, and further the initial detection times are different. Each electrical property detection device corresponds to one sample cable, each sample cable corresponds to one electrical property time sequence data in one acquisition period, the detection frame rate of each electrical property time sequence data is the same, and the initial detection time is different. Each sample cable correspondingly obtains n electrical time sequence data after n acquisition periods, each scanning time sequence chart comprises m electrical data, and each electrical data corresponds to electrical performance indexes such as current, resistance, capacitance, inductance and the like of one detection time.
In step 103 and step 104 of the embodiment of the present invention, in the same acquisition period, by setting different initial detection times for different sample cables, electrical data at different times in multiple sample cables can be detected in the same acquisition period, and under the condition of setting a smaller detection frame rate, the resolution of the detection time can also be improved.
105. And after the aging treatment is finished, determining the performance detection result of the cable to be detected in batches based on the scanning time sequence diagram and the electrical time sequence data of each acquisition period.
In the embodiment of the invention, after the aging treatment is finished, a scanning time sequence diagram of n acquisition periods and electrical time sequence data of n acquisition periods can be obtained, and the performance detection result of the cable to be detected in batches is determined according to the scanning time sequence diagram of n acquisition periods and the electrical time sequence data of n acquisition periods.
The performance detection result may include passing detection and failing detection, and when the performance detection result is that the detection is passed, the performance of the cable to be detected is qualified, and when the performance detection result is that the detection is failed, the performance of the cable to be detected is unqualified.
The method comprises the steps of obtaining a reference template time sequence diagram and reference template time sequence data of a cable with qualified performance, comparing and calculating the scanning time sequence diagrams of n acquisition periods with the reference template time sequence diagram, judging whether the scanning time sequence diagrams of n acquisition periods are similar to the reference template time sequence diagrams, if so, judging that the structural performance of the cable to be detected is qualified, and if not, judging that the structural performance of the cable to be detected is unqualified. Comparing and calculating the electrical time sequence data of the n acquisition periods with the reference template time sequence data, judging whether the electrical time sequence data of the n acquisition periods is similar to the reference template time sequence data, if so, indicating that the electrical performance of the cable to be detected is qualified, and if not, indicating that the electrical performance of the cable to be detected is unqualified. And when the structural performance and the electrical performance of the cable to be detected are qualified, the performance detection result of the cable to be detected is that the cable to be detected passes the detection, otherwise, the performance detection result is that the cable to be detected fails the detection.
In the embodiment of the invention, a plurality of sample cables with the same length are cut out from a batch of cables to be detected; carrying out continuous aging treatment on a plurality of sample cables through the same aging environment, wherein the aging environment is obtained by simulating the use environment of the cables to be detected in batches; in the aging treatment process, carrying out CT scanning treatment on a plurality of sample cables in each preset acquisition period through the same CT scanning equipment to obtain scanning time charts corresponding to the sample cables in each preset acquisition period, wherein in one acquisition period, each sample cable corresponds to one scanning time chart, the scanning frame rate of each scanning time chart is the same, and the initial scanning time is different; in the aging treatment process, the same electrical detection equipment is used for carrying out electrical detection on a plurality of sample cables in each preset acquisition period to obtain electrical time sequence data corresponding to each sample cable in each preset acquisition period, each sample cable corresponds to one electrical time sequence data in one acquisition period, the detection frame rate of the electrical time sequence data is the same as the scanning frame rate of the corresponding scanning time sequence diagram, and the initial detection time of the electrical time sequence data is the same as the initial scanning time of the corresponding scanning time sequence diagram; and after the aging treatment is finished, determining the performance detection result of the cable to be detected in batches based on the scanning time sequence diagram and the electrical time sequence data of each acquisition period. The continuous aging treatment is carried out on a plurality of sample cables through the same aging environment, in the aging treatment process, the scanning time sequence diagram and the electrical time sequence data of a plurality of acquisition periods are acquired, the structural change condition of the sample cables in the aging treatment process can be obtained through the scanning time sequence diagram of the plurality of acquisition periods due to the structural scanning time sequence diagram of the sample cables in the scanning time sequence diagram, and the electrical change condition of the sample cables in the aging treatment process can be obtained through the electrical time sequence data of the plurality of acquisition periods due to the electrical data of the sample cables in the electrical time sequence data, so that the performance of the sample cables in the aging treatment process is comprehensively detected, the continuous influence of the use environment on the cable performance is considered, and the accuracy of cable performance detection is improved.
Optionally, before the step of continuously aging the plurality of sample cables in the same aging environment, a usage environment parameter of the cables in the batch to be detected may be obtained, where the usage environment parameter includes at least one of temperature, humidity, pressure, oxygen concentration, air flow, and scratch probability; converting the use environment parameters into target simulation environment parameters under experimental conditions according to a conversion strategy between the use environment parameters and the simulation environment parameters under experimental conditions; and performing environment simulation based on the target simulation environment parameters to obtain the aging environment corresponding to the cable to be detected.
In the embodiment of the invention, the user can fill out the relevant information of the use environment, such as the use environment parameters, when submitting the order. After receiving order data submitted by a user, the processing device extracts the using environment parameters from the order data, determines target simulation environment parameters under experimental conditions according to the using environment parameters, and configures the target simulation environment parameters in the aging device to obtain the aging environment corresponding to the cable to be detected.
The aging environment corresponding to the use environment is configured by using the environment parameters, so that the aging environment is closer to the real use environment, and the aging accuracy of the sample cable is improved.
Optionally, in the step of obtaining the usage environment parameter of the cable to be detected, a sample environment parameter of the cable of the same type as the cable to be detected may be obtained; classifying the sample environment parameters to obtain the service environment types of the cables with the same type, grouping the sample environment parameters according to the service environment types to obtain sample environment parameter sets, wherein each sample environment parameter set corresponds to one service environment type; determining the type of the use environment of the batch of cables to be detected according to the order data of the batch of cables to be detected; determining a sample environment parameter set of the batch cable to be detected according to the type of the use environment of the batch cable to be detected; and determining at least one of temperature, humidity, pressure, oxygen concentration, air flow and scratch probability according to the sample environment parameter set to obtain the service environment parameters of the cable of the batch to be detected.
In the embodiment of the invention, the sample environment parameters of the cables with the same model as the cables to be detected in batches can be collected, and particularly, the sample environment parameters can be collected through historical order data, and also can be collected through modes of telephone, mail, site investigation and the like. The cables with the same model and the cables with the same cable structure to be detected are provided with the same cable structure, so that the sample environment parameter can be used as the reference environment parameter of the cables with the same cable structure to be detected. The sample environment parameters include at least one of temperature, humidity, pressure, oxygen concentration, air flow, and scratch probability.
After a certain number of sample environment parameters are obtained, the sample environment parameters can be classified to obtain sample environment parameters of different use environment types. The sample environment parameters of the same usage environment type are divided into a set of sample environment parameters. And determining a sample environment parameter set corresponding to the batch cable to be detected according to the type of the use environment of the batch cable to be detected, and determining at least one of temperature, humidity, pressure, oxygen concentration, air flow and scratch probability according to the sample environment parameter set to obtain the use environment parameter of the batch cable to be detected.
Specifically, the sample environment parameters may be clustered to obtain clusters of the sample environment parameters, each cluster corresponds to a usage environment type, and one cluster is determined as a sample environment parameter set. And calculating the distance between the use environment parameters of the batch cable to be detected and the centers of all the cluster clusters, taking the cluster closest to the use environment parameters as a sample environment parameter set corresponding to the batch cable to be detected, determining the sample environment parameter set corresponding to the batch cable to be detected according to the use environment type of the batch cable to be detected, and determining at least one of temperature, humidity, pressure, oxygen concentration, air flow and scratch probability according to the sample environment parameter set to obtain the use environment parameters of the batch cable to be detected.
The temperature is the average temperature in the sample environment parameter set, the humidity is the average humidity in the sample environment parameter set, the pressure is the average pressure in the sample environment parameter set, the oxygen concentration is the average oxygen concentration in the sample environment parameter set, and the scratch probability is determined as the normal distribution probability in the sample environment parameter set.
Optionally, in the step of performing CT scanning processing on a plurality of sample cables in each preset acquisition period to obtain a scanning timing diagram corresponding to each sample cable in each preset acquisition period, an acquisition period in the aging process may be determined, and a preset time is spaced between two adjacent acquisition periods; determining the initial scanning time of each sample cable based on the cycle initial time of the acquisition cycle; when the initial scanning time of each sample cable is reached, CT scanning processing is carried out on each sample cable according to a preset scanning step length, and a scanning time sequence diagram corresponding to each sample cable in each preset acquisition period is obtained.
In the embodiment of the present invention, the acquisition period in the aging process may be determined according to the length of the sample cable and the scanning speed of the CT scanning device, specifically, the duration of the acquisition period is a ratio of the length of the sample cable to the scanning speed, and the preset time of the interval may be determined according to the rest duration of the CT scanning device or the electrical detection device, and the longer rest duration is taken into consideration. And taking the sum of the time length of the period and the preset time of the interval as a time length unit, wherein the number of the acquisition periods is the ratio of the aging time length to the time length unit.
After the duration of the acquisition period, the preset time of the interval and the number of the acquisition periods are determined, the period starting time can be determined, the period starting time corresponding to each sample cable is different, and the maximum time difference between the period starting times corresponding to all the sample cables is smaller than the time required by one scanning step length, wherein one scanning step length corresponds to the distance between two adjacent scanning points in the sample cable. The scanning step length can be a manually set distance, and one acquisition period can be scanned to obtain m scanning patterns, and the scanning step length is L/(m-1), wherein L is the length of a sample cable. The position of each scanning point in the sample cable can be calculated according to the period starting time corresponding to each sample cable and the scanning speed of the CT scanning equipment, and the position of each scanning point comprises the starting scanning position of each sample cable. When the initial scanning time of each sample cable is reached, CT scanning processing is carried out on each sample cable with a preset scanning step length, so that a scanning time sequence diagram corresponding to each sample cable in each preset acquisition period is obtained, wherein the scanning time sequence diagram comprises m scanning diagrams, and the scanning diagrams comprise structures of the sample cables.
Optionally, in the step of performing electrical detection on the plurality of sample cables in each preset acquisition period to obtain electrical time sequence data corresponding to each sample cable in each preset acquisition period, an initial detection time of the sample cable may be determined based on an initial scanning time of the sample cable; when the initial detection time of each sample cable is reached, carrying out electrical detection on each sample cable by a preset time step, and obtaining electrical time sequence data corresponding to each sample cable in each preset acquisition period, wherein the preset time step is the same as the preset scanning step in the time dimension.
In the embodiment of the invention, for one sample cable, a cable structure is scanned by a CT scanning device, and cable electrical detection is performed by an electrical detection device. Specifically, the time when the CT scanning device reaches the start scanning position may be determined as the start detection time of the electrical detection device, where the electrical detection device should complete one electrical detection before the CT scanning device reaches the next scanning point. The initial time of the sample cable can be determined as the initial detection time of the sample cable, the time step is the time required by the CT scanning equipment to move one scanning step, the electrical detection is performed once every other time step, the acquisition period is finished, and the electrical time sequence data is obtained, wherein the electrical time sequence data comprises m electrical data.
In the CT scanning process and the electrical property detection process, the aging process is not stopped.
Optionally, in the step of determining the performance detection result of the cable to be detected based on the scanning timing diagrams and the electrical timing data of each acquisition period, the scanning timing diagrams of the same acquisition period may be subjected to a first fusion process to obtain a fusion timing diagram, and the fusion timing diagrams of different acquisition periods are sequenced according to the sequence of the acquisition periods to obtain a sequenced fusion timing diagram; and performing second fusion processing on the electrical time sequence data of the same acquisition period to obtain fusion time sequence data, and sequencing the fusion time sequence data of different acquisition periods according to the sequence of the acquisition periods to obtain sequenced fusion time sequence data; and determining the performance detection result of the cable to be detected batch based on the sequenced fusion time sequence diagram and the sequenced fusion time sequence data.
In the embodiment of the invention, after the aging treatment is finished, scanning time sequence diagrams corresponding to n acquisition periods can be obtained for each sample cable, each scanning time sequence diagram comprises m scanning time sequence diagrams, each scanning time sequence diagram comprises a structure corresponding to the sample cable, and as the plurality of sample cables are obtained by intercepting the same batch of cables to be detected, the structural performance and the electrical performance of the sample cables are consistent, the scanning time sequence diagrams of the plurality of sample cables can be fused, the electrical time sequence data of the plurality of sample cables are fused, and the plurality of sample cables are regarded as a representative sample cable for subsequent treatment.
Furthermore, because the scanning positions of each sample cable are different, the electrical detection time points are different, and the maximum time difference between the period starting time corresponding to all the sample cables is smaller than the time required by one scanning step length, the scanning images of the same acquisition period can be sequenced according to the sequence of the scanning positions to obtain a fusion time sequence diagram, and the length of the representative sample cable corresponding to the fusion time sequence diagram is unchanged, but the spatial resolution is increased. The electrical data of the same acquisition period can be sequenced according to the sequence of the detection time to obtain the fusion time sequence data, and the length of the representative sample cable corresponding to the fusion time sequence data is unchanged, but the time resolution of the representative sample cable is increased. For example, if the original scanning step length of the sample cable is 10mm and the total number of sample cables is 5, the spacing distance between two adjacent scanning patterns in the scanning timing chart is 10mm, the spatial resolution is L/10, and after the first fusion processing, the spacing distance between two adjacent scanning patterns in the fusion timing chart is 2mm and the spatial resolution is L/2 for one sample cable. Similarly, the time step of the original sample cable is 10s, the interval time between two adjacent electrical data in the electrical time sequence data is 10s, the time resolution is T/10, T is the duration of the acquisition period, after the second fusion processing, the interval distance s between two adjacent electrical data in the fusion time sequence data is 2, and the time resolution is T/2.
After the fusion time sequence diagram and the fusion time sequence data of the same acquisition period are obtained, the fusion time sequence diagrams of different acquisition periods are ordered according to the time sequence of the acquisition period, and the ordered fusion time sequence diagram an= (a) is obtained 1 ，a 2 ，…，a n-1 ，a n ) Wherein a is n A fused timing diagram representing the nth acquisition period. Sequencing the fusion time sequence diagrams of different acquisition periods according to the time sequence of the acquisition periods to obtain a sequenced fusion time sequence diagram Bn= (b) 1 ，b 2 ，…，b n-1 ，b n ) Wherein b n Fusion timing data representing the nth acquisition period.
After the ordered fusion timing diagram an= (a) 1 ，a 2 ，…，a n-1 ，a n ) After that, the sorted fusion timing chart an= (a) 1 ，a 2 ，…，a n-1 ，a n ) And a reference template timing diagram cn= (c) 1 ，c 2 ，…，c n-1 ，c n ) Performing comparison calculation, and judging the sequenced fusion time sequence diagram an= (a) 1 ，a 2 ，…，a n-1 ，a n ) And a reference template timing diagram cn= (c) 1 ，c 2 ，…，c n-1 ，c n ) If the cables are similar, the structural performance of the cables to be detected is qualified, and if the cables are dissimilar, the structural performance of the cables to be detected is unqualified.
After the ordered fusion time sequence data Bn= (b) is obtained 1 ，b 2 ，…，b n-1 ，b n ) After that, the sorted fusion timing data bn= (b) 1 ，b 2 ，…，b n-1 ，b n ) And reference template timing data dn= (d) 1 ，d 2 ，…，d n-1 ，d n ) Performing comparison calculation, and judging the sequenced fusion time sequence data Bn= (b) 1 ，b 2 ，…，b n-1 ，b n ) And reference template timing data dn= (d) 1 ，d 2 ，…，d n-1 ，d n ) Whether the cables are similar, if so, the electrical performance of the cables to be detected in batches is describedIf the cables are qualified, the electrical performance of the cables to be detected in batches is unqualified.
And when the structural performance and the electrical performance of the cable to be detected are qualified, the performance detection result of the cable to be detected is that the cable to be detected passes the detection, otherwise, the performance detection result is that the cable to be detected fails the detection.
In the embodiment of the invention, a plurality of sample cables are regarded as one representative sample cable, the first fusion processing is carried out on the scanned images of the same acquisition period, the second fusion processing is carried out on the electric data of the same acquisition period, and the sequencing processing is carried out on the fusion timing chart and the fusion timing data to obtain the sequenced fusion timing chart and the sequenced fusion timing data, so that the spatial resolution of the representative sample cable in structural performance and the time resolution of the electric performance are improved, and the structural performance and the electric performance of the representative sample cable are used for determining the performance detection result of the cable batch to be detected. Because the aging treatment conditions and time of the plurality of sample cables are the same, the external influence factors are reduced, and the performance detection accuracy is improved.
Optionally, in the step of determining the performance detection result of the cable to be detected in batches based on the sequenced fusion timing diagram and the sequenced fusion timing data, a first feature extraction process may be performed on the sequenced fusion timing diagram to obtain a structural change feature of the sample cable; performing second feature extraction processing on the sequenced fusion time sequence data to obtain the electrical change features of the sample cable; and determining the performance detection result of the cable to be detected in batches based on the structural change characteristics and the electrical change characteristics.
In the embodiment of the invention, the sequenced fusion timing diagram an= (a) can be processed by the image feature extraction engine 1 ，a 2 ，…，a n-1 ，a n ) Performing first feature extraction processing to obtain structural change feature En= (e) of representative sample cable 1 ，e 2 ，…，e n-1 ，e n ) Wherein e is n The structure change characteristic of the fusion time chart representing the nth acquisition period can cause the cable material to change in density and structure during aging due to aging of the cable materialIn turn, in the scan, this variation is manifested in the profile variation and color of the structure, and thus the above-described structure variation features may include profile variation features and color variation features. The image feature extraction engine may be a time series model based on a deep convolutional neural network, such as a time series model based on an RNN recurrent neural network or an LSTM long short time memory network.
The ordered fusion time sequence data Bn= (b) can be processed through the data feature extraction engine 1 ，b 2 ，…，b n-1 ，b n ) Performing a second feature extraction process to obtain an electrical variation feature Fn= (f) representing the sample cable 1 ，f 2 ，…，f n-1 ，f n ) Wherein f n The electrical change characteristics of the fused time sequence data of the nth acquisition period are represented, in the aging process, the electrical performance of the cable is changed due to aging of the cable material, and in the electrical data, the change is represented by the change of electrical performance such as current, resistance, capacitance, inductance and the like, so that the electrical change characteristics can comprise current change characteristics, resistance change characteristics, capacitance change characteristics, inductance change characteristics and the like. The data feature extraction engine may be a time series model based on a deep convolutional neural network, such as a time series model based on an RNN recurrent neural network or an LSTM long short time memory network.
And determining the performance detection result of the cable to be detected in batches based on the structural change characteristics and the electrical change characteristics. Specifically, when the structural change characteristics meet the reference structural change characteristics, the structural performance of the cable to be detected is qualified, and if the structural change characteristics do not meet the reference structural change characteristics, the structural performance of the cable to be detected is unqualified. When the electrical change characteristics accord with the reference electrical change characteristics, the electrical performance of the cable to be detected is qualified, and if the electrical change characteristics are dissimilar, the electrical performance of the cable to be detected is unqualified. And when the structural performance and the electrical performance of the cable to be detected are qualified, the performance detection result of the cable to be detected is that the cable to be detected passes the detection, otherwise, the performance detection result is that the cable to be detected fails the detection.
Optionally, in the step of determining the performance detection result of the cable to be detected based on the structural variation feature and the electrical variation feature, variance calculation may be performed on the structural variation feature to obtain a first variance, and the structural performance detection result of the cable to be detected is determined based on the first variance; performing variance calculation on the electrical variation characteristics to obtain a second variance, and determining an electrical performance detection result of the cable to be detected in batches based on the second variance; and determining the performance detection result of the cable to be detected in batches based on the structural performance detection result and the electrical performance detection result.
In the embodiment of the invention, the structural change feature En= (e) of the representative sample cable is obtained 1 ，e 2 ，…，e n-1 ，e n ) And an electrical variation characteristic fn= (f) representing the sample cable 1 ，f 2 ，…，f n-1 ，f n ) Then, for the structural change feature En= (e) of the representative sample cable 1 ，e 2 ，…，e n-1 ，e n ) Performing variance calculation to obtain a first variance (sigma) 1 ) 2 For the structural change characteristic fn= (f) of the representative sample cable 1 ，f 2 ，…，f n-1 ，f n ) Performing variance calculation to obtain a second variance (sigma) 2 ) 2 The first difference is used to indicate the degree of deviation representing the structural change of the sample cable, and the greater the degree of deviation, the greater the structural change is, and the more serious the structural performance of the sample cable is affected by aging. The second variance is used to represent the degree of deviation of the electrical change representing the sample cable, and the greater the degree of deviation, the greater the electrical change, and the more severely the electrical performance of the sample cable is affected by aging.
When the first variance is greater than or equal to a preset first variance threshold, the structural performance of the representative sample cable is judged to be unqualified, and the structural performance of the cable to be detected in batches is judged to be unqualified. When the first variance is smaller than a preset first variance threshold, the structural performance of the representative sample cable is qualified, and the structural performance of the cable to be detected is qualified.
When the second variance is greater than or equal to a preset second variance threshold, the electrical performance of the representative sample cable is judged to be unqualified, and the electrical performance of the cable to be detected is judged to be unqualified. When the second variance is smaller than a preset second variance threshold, the electrical performance of the representative sample cable is qualified, and further the electrical performance of the cable to be detected is qualified.
And when the structural performance and the electrical performance of the cable to be detected are qualified, the performance detection result of the cable to be detected is that the cable to be detected passes the detection, otherwise, the performance detection result is that the cable to be detected fails the detection.
Optionally, in the step of determining the performance detection result of the cable to be detected batch based on the structural variation feature and the electrical variation feature, the structural variation feature and the electrical variation feature may be subjected to feature fusion to obtain a fusion feature; classifying the fusion features to obtain classification results of the fusion features; and determining a performance detection result of the cable to be detected in batches based on the classification result.
In the embodiment of the invention, a classification model can be trained, and the input of the classification model is the fusion characteristic of the structural change characteristic and the electrical change characteristic, and the output is the passing detection and the failing detection. Specifically, the classification model may be a trained SVM classification model, collecting a sample scanning time sequence diagram and sample scanning time sequence data of a cable with a performance detection result of passing detection, and collecting a sample scanning time sequence diagram and sample scanning time sequence data of a cable with a performance detection result of failing detection, processing the sample scanning time sequence diagram and the sample scanning time sequence data into a structure change feature and an electrical change feature by the processing mode of the embodiment of the invention, and performing feature fusion to obtain sample fusion features, labeling each sample fusion feature as passing detection or failing detection according to an actual performance detection result to obtain sample fusion features with labels, inputting the sample fusion features with labels into the SVM classification model to be trained, and continuously performing iterative training until the SVM classification model to be trained converges to obtain the trained SVM classification model.
The feature fusion can be to respectively perform linear transformation on the structural change feature and the electrical change feature to obtain the structural change feature and the electrical change feature with the same dimension, and superimpose the structural change feature and the electrical change feature with the same dimension to obtain the corresponding fusion feature.
After the trained SVM classification model and the fusion feature are obtained, the fusion feature is input into the trained SVM classification model for classification, if the output classification result is detection passing, the detection result representing the sample cable is indicated to be detection passing, further, the performance detection result of the batch cable to be detected is indicated to be detection passing, and if the output classification result is detection failing, the detection result representing the sample cable is indicated to be detection failing, further, the performance detection result of the batch cable to be detected is indicated to be detection failing.
In the embodiment of the invention, the scanning time sequence diagrams and the electrical time sequence data of a plurality of sample cables can be acquired in the aging treatment process, the scanning time sequence diagrams of the plurality of sample cables are used for fusion, the spatial resolution of the batch cables to be detected on the structural performance is improved, the electrical time sequence data of the plurality of sample cables are used for fusion, the time resolution of the batch cables to be detected on the electrical performance is improved, and the accuracy of the performance detection result of the batch cables to be detected is further improved. Furthermore, the classification result of the fusion characteristics can be obtained rapidly by classifying the fusion characteristics, so that the detection speed of the performance detection result of the cable to be detected batch is improved.
Those skilled in the art will appreciate that implementing all or part of the above-described embodiment methods, such as step 105, may be implemented by a computer program to instruct the relevant hardware, and the program may be stored in a computer readable storage medium, where the program may include the above-described embodiment methods when executed. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM) or the like.
The foregoing disclosure is illustrative of the present invention and is not to be construed as limiting the scope of the invention, which is defined by the appended claims.
Claims (8)
1. A method for detecting cable performance, the method comprising the steps of:
intercepting a plurality of sample cables with the same length from a batch of cables to be detected;
performing continuous aging treatment on a plurality of sample cables through the same aging environment, wherein the aging environment is obtained by simulating the use environment of the cables to be detected;
in the aging treatment process, carrying out CT scanning treatment on a plurality of sample cables in each preset acquisition period through the same CT scanning equipment to obtain a scanning time sequence diagram corresponding to each sample cable in each acquisition period, wherein in one acquisition period, each sample cable corresponds to one scanning time sequence diagram, the scanning frame rate of each scanning time sequence diagram is the same, and the initial scanning position of each scanning time sequence diagram is different;
In the aging treatment process, carrying out electrical detection on a plurality of sample cables in each preset acquisition period through the same electrical detection equipment to obtain electrical time sequence data corresponding to each sample cable in each acquisition period, wherein in one acquisition period, each sample cable corresponds to one electrical time sequence data, the detection frame rate of the electrical time sequence data is the same as the scanning frame rate corresponding to the scanning time sequence diagram, and the initial detection time of the electrical time sequence data is the same as the initial scanning time corresponding to the scanning time sequence diagram;
after the aging treatment is finished, carrying out first fusion treatment on the scanning time sequence diagram of the same acquisition period to obtain a fusion time sequence diagram, and sequencing the fusion time sequence diagrams of different acquisition periods according to the sequence of the acquisition periods to obtain a sequenced fusion time sequence diagram;
and performing second fusion processing on the electrical time sequence data of the same acquisition period to obtain fusion time sequence data, and sequencing the fusion time sequence data of different acquisition periods according to the sequence of the acquisition periods to obtain sequenced fusion time sequence data;
performing first feature extraction processing on the sequenced fusion time sequence diagram to obtain the structural change feature of the sample cable;
Performing second feature extraction processing on the sequenced fusion time sequence data to obtain the electrical variation features of the sample cable;
and determining a performance detection result of the cable to be detected batch based on the structural change characteristics and the electrical change characteristics.
2. The method of claim 1, wherein prior to said subjecting a plurality of said sample cables to a continuous aging process through the same aging environment, said method further comprises:
acquiring use environment parameters of a cable to be detected, wherein the use environment parameters comprise at least one of temperature, humidity, pressure, oxygen concentration, air flow and scratch probability;
converting the using environment parameters into target simulation environment parameters under experimental conditions according to a conversion strategy between the using environment parameters and the simulation environment parameters under experimental conditions;
and performing environment simulation based on the target simulation environment parameters to obtain the aging environment corresponding to the to-be-detected batch of cables.
3. The method of claim 2, wherein the obtaining the usage environment parameter of the batch of cables to be tested comprises:
acquiring sample environment parameters of the same type of cables of the cables to be detected;
Classifying the sample environment parameters to obtain the service environment types of the cables with the same type, grouping the sample environment parameters according to the service environment types to obtain sample environment parameter sets, wherein each sample environment parameter set corresponds to one service environment type;
determining the type of the use environment of the cable to be detected according to the order data of the cable to be detected;
determining a sample environment parameter set of the to-be-detected batch cable according to the use environment type of the to-be-detected batch cable;
and determining at least one of temperature, humidity, pressure, oxygen concentration, air flow and scratch probability according to the sample environment parameter set to obtain the using environment parameter of the cable to be detected.
4. The method of claim 2, wherein during the aging process, performing CT scan processing on the plurality of sample cables in each preset acquisition period to obtain a scan timing diagram corresponding to each sample cable in each acquisition period, and the method comprises:
determining acquisition periods in the aging treatment process, wherein a preset time is reserved between two adjacent acquisition periods;
Determining a starting scanning position of each sample cable;
when the initial scanning position of each sample cable is reached, CT scanning processing is carried out on each sample cable with a preset scanning step length, and a scanning time sequence diagram corresponding to each sample cable in each acquisition period is obtained.
5. The method of claim 4, wherein during the aging process, performing electrical detection on the plurality of sample cables in each preset collection period to obtain electrical time sequence data corresponding to each sample cable in each collection period, and the method comprises:
determining the initial scanning time of the sample cable according to the initial scanning position of the sample cable;
determining a start detection time of the sample cable based on the start scanning time of the sample cable;
when the initial detection time of each sample cable is reached, carrying out electrical detection on each sample cable in a preset time step to obtain electrical time sequence data corresponding to each sample cable in each acquisition period, wherein the preset time step is the same as the preset scanning step in the time dimension.
6. The method of claim 1, wherein the determining the performance test result of the batch of cables to be tested based on the structural change feature and the electrical change feature comprises:
performing variance calculation on the structural variation characteristics to obtain a first variance, and determining a structural performance detection result of the cable to be detected batch based on the first variance;
performing variance calculation on the electrical variation characteristics to obtain a second variance, and determining an electrical performance detection result of the cable to be detected batch based on the second variance;
and determining the performance detection result of the cable to be detected batch based on the structural performance detection result and the electrical performance detection result.
7. The method of claim 1, wherein the determining the performance test result of the batch of cables to be tested based on the structural change feature and the electrical change feature comprises:
performing feature fusion on the structural change features and the electrical change features to obtain fusion features;
classifying the fusion features to obtain classification results of the fusion features;
and determining the performance detection result of the cable to be detected in batches based on the classification result.
8. A cable performance detection system, the system comprising: the device comprises an intercepting device, an aging device, a first collecting device, a second collecting device and a processing device;
the intercepting device is used for intercepting a plurality of sample cables with the same length from the cables to be detected;
the aging device is used for continuously aging a plurality of sample cables through the same aging environment, and the aging environment is obtained by simulating the use environment of the cables to be detected;
the first acquisition device is used for carrying out CT scanning processing on a plurality of sample cables in each preset acquisition period through the same CT scanning equipment in the aging processing process to obtain scanning time sequence diagrams corresponding to the sample cables in each preset acquisition period, wherein in one acquisition period, each sample cable corresponds to one scanning time sequence diagram, the scanning frame rate of each scanning time sequence diagram is the same, and the initial scanning positions are different;
the second acquisition device is used for carrying out electrical detection on a plurality of sample cables in each preset acquisition period through the same electrical detection equipment in the aging treatment process to obtain electrical time sequence data corresponding to each sample cable in each preset acquisition period, wherein in one acquisition period, each sample cable corresponds to one electrical time sequence data, the detection frame rate of the electrical time sequence data is the same as the scanning frame rate corresponding to the scanning time sequence chart, and the initial detection time of the electrical time sequence data is the same as the initial scanning time corresponding to the scanning time sequence chart;
The processing device is used for performing first fusion processing on the scanning time sequence diagram of the same acquisition period after the aging processing is finished to obtain a fusion time sequence diagram, and sequencing the fusion time sequence diagrams of different acquisition periods according to the sequence of the acquisition periods to obtain a sequenced fusion time sequence diagram; and performing second fusion processing on the electrical time sequence data of the same acquisition period to obtain fusion time sequence data, and sequencing the fusion time sequence data of different acquisition periods according to the sequence of the acquisition periods to obtain sequenced fusion time sequence data; performing first feature extraction processing on the sequenced fusion time sequence diagram to obtain the structural change feature of the sample cable; performing second feature extraction processing on the sequenced fusion time sequence data to obtain the electrical variation features of the sample cable; and determining a performance detection result of the cable to be detected batch based on the structural change characteristics and the electrical change characteristics.
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