CN110111309B - Carbon fiber composite core wire ray image processing, defect detection and storage medium - Google Patents
Carbon fiber composite core wire ray image processing, defect detection and storage medium Download PDFInfo
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- CN110111309B CN110111309B CN201910293532.1A CN201910293532A CN110111309B CN 110111309 B CN110111309 B CN 110111309B CN 201910293532 A CN201910293532 A CN 201910293532A CN 110111309 B CN110111309 B CN 110111309B
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- 229920000049 Carbon (fiber) Polymers 0.000 title claims abstract description 91
- 239000004917 carbon fiber Substances 0.000 title claims abstract description 91
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 91
- 239000002131 composite material Substances 0.000 title claims abstract description 90
- 230000007547 defect Effects 0.000 title claims abstract description 44
- 238000001514 detection method Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 claims abstract description 27
- 230000005855 radiation Effects 0.000 claims abstract description 23
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 15
- 238000003672 processing method Methods 0.000 claims abstract description 8
- 238000004590 computer program Methods 0.000 claims description 14
- 239000011295 pitch Substances 0.000 claims description 13
- 238000004519 manufacturing process Methods 0.000 claims description 6
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 5
- 238000005259 measurement Methods 0.000 claims description 3
- 230000002950 deficient Effects 0.000 claims 1
- 239000004020 conductor Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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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
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/0002—Inspection of images, e.g. flaw detection
- G06T7/0004—Industrial image inspection
- G06T7/0008—Industrial image inspection checking presence/absence
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/10—Segmentation; Edge detection
- G06T7/11—Region-based segmentation
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/10—Segmentation; Edge detection
- G06T7/136—Segmentation; Edge detection involving thresholding
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/40—Imaging
- G01N2223/401—Imaging image processing
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/10—Image acquisition modality
- G06T2207/10072—Tomographic images
- G06T2207/10081—Computed x-ray tomography [CT]
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/30—Subject of image; Context of image processing
- G06T2207/30108—Industrial image inspection
Abstract
The invention discloses a method and a device for processing a carbon fiber composite core wire ray image and a computer storage medium, which can effectively eliminate interference formed by wire aluminum strand gaps and the like by carrying out subtraction operation on an operator and a sample graph and outputting a subtracted image with the lowest blackness value without using a developer. The invention also discloses a defect detection method, equipment and a computer storage medium which adopt the carbon fiber composite core wire radiation image processing method, the defect detection is carried out by utilizing the subtracted image with the lowest blackness value, and the defect of the carbon fiber composite core wire can be highlighted, so that the defect identification and positioning can be rapidly and accurately realized, and the reliability of the radiation flaw detection is improved.
Description
Technical Field
The present invention relates to image processing and defect detection for carbon fiber composite core wires, and more particularly, to a method for processing a carbon fiber composite core wire image, a method for defect detection, an apparatus, a device, and a computer storage medium.
Background
The carbon fiber composite core wire has the advantages of small sag, large current-carrying capacity, light weight and the like, can fully utilize the original tower during line capacity-increasing transformation, can greatly improve the line transmission capacity, and is one of the conventional convenient means for dealing with channel resource shortage and rapid load increase. In application, the carbon fiber composite core wire, especially the carbon fiber composite core of the wire, is easy to damage in the processes of product production, installation and stringing, and if the damage cannot be found in time and treated, the operation safety of the power transmission line is necessarily endangered.
The ray detection technology is used as a general detection technology for finding internal defects of equipment or materials, when the ray detection technology is applied to detection of damage of a carbon fiber composite core wire, the damage defect of the internal composite core rod is often shielded or interfered by gap images among a plurality of aluminum strands in an obtained ray picture under the influence of gaps among outer-layer aluminum strands, so that the defect images are not easy to identify and even cause missed detection.
Currently, there are few reports about methods for improving the defect identification precision of carbon fiber wire ray detection, and patent publication No. CN104316545A discloses a method for improving the nondestructive detection accuracy of a carbon fiber wire, wherein a high-strength resin is selected to match with a special developer in the production process of a mandrel bar to increase the imaging effect, and then the nondestructive detection of X-rays is performed. The method can enhance the developing effect of the core rod to a certain extent, but does not completely eliminate the interference of an aluminum strand image, increases the production cost of the carbon fiber composite core rod, and is not suitable for detecting a lead wire without adding a special developer.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide a carbon fiber composite core wire radiation image processing method, a defect detection method, a device, equipment and a computer storage medium, which can solve the technical problem of 'needing a developer' in the prior art.
The technical scheme is as follows: the invention relates to a method for processing a radiation image of a carbon fiber composite core wire, which comprises the following steps:
s1: measuring pitches of different stranded layers in an outer layer aluminum strand of a carbon fiber composite core lead sample of one type, and intercepting a lead section with the length of L in the carbon fiber composite core lead sample, wherein L is the product of all the pitches;
s2: shooting a plurality of sample pictures of different angles of the lead segments obtained in the step S1 by using an X-ray machine to form a sample picture set of the lead segments with the type;
s3: the operations of the steps S1-S2 are carried out on the carbon fiber composite core lead wire samples of other models, and the step S4 is carried out after the operations of the steps S1-S2 are carried out on the carbon fiber composite core lead wire samples of all models;
s4: shooting a radiographic image of the carbon fiber composite core wire to be detected by using an X-ray machine;
s5: selecting a sample image set corresponding to the type of the carbon fiber composite core wire to be detected, and processing all sample images in the sample image set to enable the lengths of all sample images to be larger than the length of a radiographic image of the carbon fiber composite core wire to be detected;
s6: and taking the radiation image of the carbon fiber composite core wire to be detected as an operator, respectively carrying out subtraction operation on the operator and all the sample images obtained in the step S5 to obtain a plurality of images subjected to subtraction, and outputting the image subjected to subtraction with the lowest blackness value.
Further, in step S2, several different angle patterns of the wire segment are obtained by: rotating around the axis of the wire section, shooting a sample picture at intervals of 0.5-2 degrees, and stopping shooting until the sample picture rotates by 360 degrees. In this way, the angles of the wire segments can be patterned, and the number of patterns is large, so that it is easier to find the pattern like the aluminum strand gap when the subtraction operation is performed in step S6.
Further, one sample was taken every 1 °.
Further, in step S2, several different angle patterns of the wire segment are photographed in a state where the wire segment is tensioned. Therefore, the conductor section and the carbon fiber composite core conductor to be detected are shot under the same process condition, so that errors can be eliminated, and the precision of image processing can be improved.
Further, in step S5, the process of processing all the sample maps in the sample map set is as follows: judging whether the length of the sample image is smaller than the length of a radiographic image of the carbon fiber composite core wire to be detected: if so, copying the sample image, splicing the copied image with the sample image until the length of the spliced whole image is greater than that of the radiographic image of the carbon fiber composite core wire to be detected; otherwise, no processing is performed.
The defect detection method adopting the carbon fiber composite core wire radiation image processing method observes the subtracted image with the lowest blackness value and judges whether the defect exists or not and the position of the defect.
The invention discloses a ray image processing device of a carbon fiber composite core wire, which comprises:
a measurement module: the device is used for measuring the pitches of different stranded layers in outer-layer aluminum strands of various types of carbon fiber composite core lead samples, and intercepting lead segments with the length of L in the carbon fiber composite core lead samples, wherein L is the product of all pitches in the carbon fiber composite core lead samples corresponding to the lead segments;
a sample set manufacturing module: the device comprises a measuring module, a sample drawing set and a control module, wherein the measuring module is used for shooting a plurality of sample drawings of lead segments with different angles obtained by the measuring module by using an X-ray machine to form a sample drawing set of lead segments with corresponding models;
a shooting module: the device is used for shooting a radiation image of the carbon fiber composite core wire to be detected by adopting an X-ray machine;
a sample image processing module: the method comprises the steps of selecting a sample image set corresponding to the type of the carbon fiber composite core wire to be detected, and processing all sample images in the sample image set to enable the lengths of all sample images to be larger than the length of a radiographic image of the carbon fiber composite core wire to be detected;
a subtraction operation module: and the device is used for taking the radiation image of the carbon fiber composite core wire to be detected as an operator, performing subtraction operation on the operator and all the sample images obtained by the sample image processing module respectively to obtain a plurality of subtracted images, and outputting the subtracted image with the lowest blackness value.
The computer storage medium of the invention stores a computer program, and when the computer program is executed by a processor, the computer program realizes the steps of the carbon fiber composite core wire ray image processing method.
The defect detection device of the carbon fiber composite core wire ray image processing device comprises a defect detection module, wherein the defect detection module is used for observing the subtracted image with the lowest blackness value and judging whether a defect exists and the position of the defect.
The computer storage medium of the present invention stores a computer program, and the computer program is executed by a processor to implement the steps of the defect detection method.
Has the beneficial effects that: the invention discloses a method and a device for processing a carbon fiber composite core wire radiation image and a computer storage medium, wherein developer is not needed, the radiation image of a carbon fiber composite core wire to be detected is used as an operator, the operator and a sample image are subjected to subtraction operation, the subtracted image with the lowest blackness value is output, and the interference formed by a wire aluminum strand gap and the like can be effectively eliminated. The invention also discloses a defect detection method, equipment and a computer storage medium adopting the carbon fiber composite core wire ray image processing method, the defect detection is carried out by utilizing the subtracted image with the lowest blackness value, and the defect of the carbon fiber composite core wire can be highlighted, so that the defect identification and positioning can be rapidly and accurately realized, and the reliability of the ray inspection is improved.
Drawings
FIG. 1 is a flow chart of a method in accordance with an embodiment of the present invention.
Detailed Description
The specific embodiment discloses a method for processing a radiation image of a carbon fiber composite core wire, which comprises the following steps of:
s1: measuring pitches of different stranded layers in outer-layer aluminum strands of one type of carbon fiber composite core lead sample, and intercepting lead segments with the length of L in the carbon fiber composite core lead sample, wherein L is the product of all pitches; by "pitch" is meant the distance that one of the different plies moves in its axial direction after it has been rotated 360 °;
s2: shooting a plurality of sample pictures of different angles of the lead segments obtained in the step S1 by using an X-ray machine to form a sample picture set of the lead segments with the model;
s3: performing the steps S1-S2 on the carbon fiber composite core wire samples of other models, and performing the step S4 after the steps S1-S2 are performed on the carbon fiber composite core wire samples of all models;
s4: shooting a radiographic image of the carbon fiber composite core wire to be detected by using an X-ray machine;
s5: selecting a sample image set corresponding to the model of the carbon fiber composite core wire to be detected, and processing all sample images in the sample image set to enable the lengths of all sample images to be larger than the length of a radiographic image of the carbon fiber composite core wire to be detected;
s6: and taking the radiation image of the carbon fiber composite core wire to be detected as an operator, respectively carrying out subtraction operation on the operator and all the sample images obtained in the step S5 to obtain a plurality of images subjected to subtraction, and outputting the image subjected to subtraction with the lowest blackness value.
In step S2, several different angle patterns of the wire segment can be obtained as follows: rotating around the axis of the wire section, shooting a sample picture at intervals of 0.5-2 degrees, and stopping shooting until the sample picture rotates by 360 degrees. In this way, the angles of the wire segments can be patterned, and the number of patterns is large, so that it is easier to find a pattern having the same gap between the aluminum strands when performing the subtraction operation in step S6. Specifically, one sample image may be taken every 1 °.
In step S2, several different angle patterns of the wire segment can be photographed under the tension of the wire segment. Therefore, the conductor section and the carbon fiber composite core conductor to be detected are shot under the same process condition, so that errors can be eliminated, and the precision of image processing can be improved.
In step S5, the process of processing all the sample maps in the sample map set is: judging whether the length of the sample is less than the length of the radiographic image of the carbon fiber composite core wire to be detected: if so, copying the sample image, splicing the copied image with the sample image until the length of the spliced whole image is not less than that of the radiographic image of the carbon fiber composite core wire to be detected; otherwise, no processing is performed.
The specific embodiment also discloses a defect detection method adopting the carbon fiber composite core wire ray image processing method, which observes the subtracted image with the lowest blackness value and judges whether the defect exists and the position of the defect. The subtracted image with the lowest blackness value is the image which is basically eliminated by the aluminum strand gap image, so that the aluminum strand gap image cannot interfere with the core rod image, and the defect can be quickly identified and positioned by analyzing the interference-free core rod image.
This embodiment mode still discloses carbon fiber composite core wire ray image processing apparatus, includes:
a measurement module: the device is used for measuring the pitches of different stranded layers in outer-layer aluminum strands of various types of carbon fiber composite core lead samples, and intercepting lead segments with the length of L in the carbon fiber composite core lead samples, wherein L is the product of all pitches in the carbon fiber composite core lead samples corresponding to the lead segments;
a sample set manufacturing module: the device comprises a measuring module, a sample drawing set and a control module, wherein the measuring module is used for shooting a plurality of sample drawings of lead segments with different angles obtained by the measuring module by using an X-ray machine to form a sample drawing set of lead segments with corresponding models;
a shooting module: the device is used for shooting a radiation image of the carbon fiber composite core wire to be detected by adopting an X-ray machine;
a sample image processing module: the method comprises the steps of selecting a sample image set corresponding to the type of the carbon fiber composite core wire to be detected, and processing all sample images in the sample image set to enable the lengths of all sample images to be larger than the length of a radiographic image of the carbon fiber composite core wire to be detected;
a subtraction operation module: and the device is used for taking the radiation image of the carbon fiber composite core wire to be detected as an operator, performing subtraction operation on the operator and all the sample images obtained by the sample image processing module respectively to obtain a plurality of subtracted images, and outputting the subtracted image with the lowest blackness value.
The specific embodiment also discloses a computer storage medium, wherein a computer program is stored on the computer storage medium, and when the computer program is executed by a processor, the steps of the carbon fiber composite core wire ray image processing method are realized.
The specific embodiment also discloses defect detection equipment adopting the carbon fiber composite core wire ray image processing device, which comprises a defect detection module, wherein the defect detection module is used for observing the subtracted image with the lowest blackness value and judging whether the defect exists and the position of the defect.
The specific embodiment also discloses another computer storage medium, wherein a computer program is stored on the computer storage medium, and when the computer program is executed by a processor, the steps of the defect detection method are realized.
Claims (10)
1. The method for processing the radiation image of the carbon fiber composite core wire is characterized by comprising the following steps of: the method comprises the following steps:
s1: measuring pitches of different stranded layers in outer-layer aluminum strands of one type of carbon fiber composite core lead sample, and intercepting lead segments with the length of L in the carbon fiber composite core lead sample, wherein L is the product of all pitches;
s2: shooting a plurality of sample pictures of different angles of the lead segments obtained in the step S1 by using an X-ray machine to form a sample picture set of the lead segments of the type;
s3: the operations of the steps S1-S2 are carried out on the carbon fiber composite core lead wire samples of other models, and the step S4 is carried out after the operations of the steps S1-S2 are carried out on the carbon fiber composite core lead wire samples of all models;
s4: shooting a radiographic image of the carbon fiber composite core wire to be detected by using an X-ray machine;
s5: selecting a sample image set corresponding to the type of the carbon fiber composite core wire to be detected, and processing all sample images in the sample image set to enable the lengths of all sample images to be larger than the length of a radiographic image of the carbon fiber composite core wire to be detected;
s6: and taking the radiation image of the carbon fiber composite core wire to be detected as an operator, respectively carrying out subtraction operation on the operator and all the sample images obtained in the step S5 to obtain a plurality of images subjected to subtraction, and outputting the image subjected to subtraction with the lowest blackness value.
2. The method for processing a radiation image of a carbon fiber composite core wire according to claim 1, wherein: in step S2, several different angle patterns of the wire segment are obtained as follows: rotating around the axis of the wire section, shooting a sample picture at intervals of 0.5-2 degrees, and stopping shooting until the sample picture rotates by 360 degrees.
3. The method for processing a radiation image of a carbon fiber composite core wire according to claim 2, wherein: one sample was taken every 1 °.
4. The method for processing a radiation image of a carbon fiber composite core wire according to claim 1, wherein: in step S2, several different angle patterns of the wire segment are photographed under tension of the wire segment.
5. The method for processing a radiation image of a carbon fiber composite core wire according to claim 1, wherein: in step S5, the process of processing all the sample maps in the sample map set is as follows: judging whether the length of the sample is less than the length of the radiographic image of the carbon fiber composite core wire to be detected: if so, copying the sample image, splicing the copied image with the sample image until the length of the spliced whole image is greater than that of the radiographic image of the carbon fiber composite core wire to be detected; otherwise, no processing is performed.
6. The defect detection method adopting the carbon fiber composite core wire ray image processing method as claimed in claim 1, is characterized in that: the subtracted image with the lowest blackness value is observed to judge whether or not a defect exists and the position of the defect.
7. Carbon fiber composite core wire ray image processing apparatus which characterized in that: the method comprises the following steps:
a measurement module: the device is used for measuring the pitches of different stranded layers in outer-layer aluminum strands of various types of carbon fiber composite core lead samples, and intercepting lead segments with the length of L in the carbon fiber composite core lead samples, wherein L is the product of all pitches in the carbon fiber composite core lead samples corresponding to the lead segments;
a sample picture set manufacturing module: the device comprises a measuring module, a sample drawing set and a control module, wherein the measuring module is used for shooting a plurality of sample drawings of lead segments with different angles obtained by the measuring module by using an X-ray machine to form a sample drawing set of lead segments with corresponding models;
a shooting module: the device is used for shooting a radiation image of the carbon fiber composite core wire to be detected by adopting an X-ray machine;
a sample image processing module: the method comprises the steps of selecting a sample image set corresponding to the type of the carbon fiber composite core wire to be detected, and processing all sample images in the sample image set to enable the lengths of all sample images to be larger than the length of a radiographic image of the carbon fiber composite core wire to be detected;
a subtraction operation module: and the device is used for taking the radiation image of the carbon fiber composite core wire to be detected as an operator, performing subtraction operation on the operator and all the sample images obtained by the sample image processing module respectively to obtain a plurality of subtracted images, and outputting the subtracted image with the lowest blackness value.
8. A computer storage medium having a computer program stored thereon, characterized in that: the computer program, when executed by a processor, performs the steps of the method for processing a radiation image of a carbon fiber composite core wire as set forth in any one of claims 1 to 5.
9. The defect detecting apparatus using the carbon fiber composite core wire image processing device according to claim 7, wherein: the image processing device comprises a defect detection module, wherein the defect detection module is used for observing the subtracted image with the lowest blackness value and judging whether the image is defective or not and the position of the defect.
10. A computer storage medium having a computer program stored thereon, the computer program characterized in that: the computer program, when being executed by a processor, realizes the steps of the defect detection method as claimed in claim 6.
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| CN1800838A (en) * | 2004-12-30 | 2006-07-12 | 戚大伟 | Non-destructive test device for wood |
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| CN108844965A (en) * | 2018-07-04 | 2018-11-20 | 武汉黎赛科技有限责任公司 | Defect image acquires display system, method, apparatus, computer and storage medium |
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2019
- 2019-04-12 CN CN201910293532.1A patent/CN110111309B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1800838A (en) * | 2004-12-30 | 2006-07-12 | 戚大伟 | Non-destructive test device for wood |
| CN103487450A (en) * | 2013-10-11 | 2014-01-01 | 国家电网公司 | Method for detecting crimping quality of strain clamp for electric transmission line |
| CN103886602A (en) * | 2014-03-28 | 2014-06-25 | 重庆大学 | Radial image deflect detecting method based on veins |
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