CN113640298A - Transmission system RTV coating defect detection method and system - Google Patents
Transmission system RTV coating defect detection method and system Download PDFInfo
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- CN113640298A CN113640298A CN202110740848.8A CN202110740848A CN113640298A CN 113640298 A CN113640298 A CN 113640298A CN 202110740848 A CN202110740848 A CN 202110740848A CN 113640298 A CN113640298 A CN 113640298A
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- 238000000576 coating method Methods 0.000 title claims abstract description 71
- 239000011248 coating agent Substances 0.000 title claims abstract description 67
- 238000001514 detection method Methods 0.000 title claims abstract description 52
- 230000007547 defect Effects 0.000 title claims abstract description 42
- 230000005540 biological transmission Effects 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 25
- 230000002159 abnormal effect Effects 0.000 claims description 55
- 230000015654 memory Effects 0.000 claims description 8
- 238000001931 thermography Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims 3
- 239000002994 raw material Substances 0.000 claims 3
- 230000000007 visual effect Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 8
- 238000004590 computer program Methods 0.000 description 7
- 230000006870 function Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 239000012212 insulator Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 238000002679 ablation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000009422 external insulation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009659 non-destructive testing Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
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- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
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Abstract
The invention discloses a transmission system RTV coating defect detection method, which comprises the steps of obtaining an infrared image of an object to be detected; acquiring an amplitude image and a phase image of an object to be detected according to the infrared image; and performing RTV coating defect detection according to the amplitude image of the object to be detected, the phase image of the object to be detected, the amplitude image of the preset standard part and the phase image of the preset standard part. A corresponding system is also disclosed. The method disclosed by the invention realizes the defect detection of the RTV coating based on the amplitude image and the phase image, does not receive the influence of personnel experience compared with the traditional visual detection method, and has the advantages of higher accuracy and higher detection efficiency.
Description
Technical Field
The invention relates to a transmission system RTV coating defect detection method and system, and belongs to the field of nondestructive testing.
Background
In an electric power system, electric transmission and transformation equipment and lines are exposed to an outdoor environment, and the dirt on the outer surface of the electric transmission and transformation equipment and the lines gradually increases over time. In case bad weather such as hair rain, fog, snow appear, the filth on external insulation surface can wet gradually, very easily takes place the large tracts of land pollution flashover, and the safe operation of electric power system can seriously be influenced to the pollution flashover, causes accidents such as large tracts of land power failure easily.
The room temperature vulcanized silicone Rubber (RTV) can be vulcanized into a film at room temperature, and has unique hydrophobicity and arc ablation resistance. The RTV is coated on the surface of the insulator, so that the generation and the development of leakage current and local electric arc can be inhibited, and the pollution-resistant lightning voltage of the insulator can be obviously improved.
However, due to coating process problems or long-term exposure to the environment, the RTV coating may detach from the bottom insulator to form debonding, which may cause peeling, falling, etc. of the RTV coating after a long time, thereby reducing the effective protection period of the RTV coating.
At present, the defect detection of commonly used RTV coatings is mostly a visual method, whether the RTV coatings are debonded or not is judged by manually observing the state of the RTV coatings on the surface of the equipment, the detection result is influenced by factors such as experience of detection personnel, great uncertainty exists, and the detection efficiency is low.
Disclosure of Invention
The invention provides a transmission system RTV coating defect detection method and system, and solves the problems of high uncertainty and low detection efficiency of an eye detection method.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a transmission system RTV coating defect detection method comprises,
acquiring an infrared image of an object to be detected;
acquiring an amplitude image and a phase image of an object to be detected according to the infrared image;
and performing RTV coating defect detection according to the amplitude image of the object to be detected, the phase image of the object to be detected, the amplitude image of the preset standard part and the phase image of the preset standard part.
And acquiring an infrared image of the object to be detected by adopting a phase-locking method thermal imaging detection method.
According to the amplitude image of the object to be detected, the phase image of the object to be detected, the amplitude image of the preset standard component and the phase image of the preset standard component, the RTV coating defect detection is carried out,
acquiring an abnormal area according to the amplitude image and the phase image of the object to be detected;
and performing RTV coating defect detection according to the amplitude of the abnormal area, the phase difference of the abnormal area, the amplitude image of the preset standard component and the phase image of the preset standard component.
And according to the amplitude image and the phase image of the object to be detected, taking the area with abnormal amplitude and/or abnormal phase difference as an abnormal area.
According to the amplitude of the abnormal area, the phase difference of the abnormal area, the amplitude image of the preset standard component and the phase image of the preset standard component, the RTV coating defect detection is carried out,
if the amplitude of the abnormal area is different from the amplitudes of other areas in the amplitude image of the object to be detected, and the phase difference of the abnormal area is not different from the phase difference of other areas in the amplitude image of the object to be detected, the thickness of the RTV coating of the abnormal area is not changed, but the phenomenon of debonding exists under the RTV coating;
and if the amplitude of the abnormal area is not different from the amplitudes of other areas in the amplitude image of the object to be detected, and the phase difference of the abnormal area is not different from the phase differences of other areas in the amplitude image of the object to be detected, judging whether the RTV coating of the abnormal area has a debonding phenomenon or not according to the amplitude image of the preset standard component and the phase image of the preset standard component.
Judging whether the debonding phenomenon exists under the RTV coating according to the amplitude image of the preset standard component and the phase image of the preset standard component,
acquiring a position X with the same phase difference with the abnormal area in the preset standard component according to the phase image of the preset standard component;
acquiring the amplitude of the position X according to the amplitude image of the preset standard component;
if the difference value between the amplitude of the abnormal area and the amplitude of the position X is 0, the phenomenon of debonding does not exist under the RTV coating;
and if the difference value between the amplitude of the abnormal region and the amplitude of the position X is not 0, the RTV coating has a debonding phenomenon.
The RTV coating thickness of the standard part is gradually thickened from left to right and is uniform and unchanged from top to bottom.
An RTV coating defect detection system for a power transmission system includes,
an infrared image acquisition module: acquiring an infrared image of an object to be detected;
an amplitude phase image acquisition module: acquiring an amplitude image and a phase image of an object to be detected according to the infrared image;
a defect detection module: and performing RTV coating defect detection according to the amplitude image of the object to be detected, the phase image of the object to be detected, the amplitude image of the preset standard part and the phase image of the preset standard part.
A computer readable storage medium storing one or more programs, the one or more programs comprising instructions, which when executed by a computing device, cause the computing device to perform a power transmission system RTV coating defect detection method.
A computing device comprising one or more processors, one or more memories, and one or more programs stored in the one or more memories and configured to be executed by the one or more processors, the one or more programs comprising instructions for performing a power transmission system RTV coating defect detection method.
The invention achieves the following beneficial effects: 1. the method disclosed by the invention is based on the amplitude image and the phase image, realizes the defect detection of the RTV coating, does not receive the influence of personnel experience compared with the traditional visual detection method, and is higher in accuracy and higher in detection efficiency; 2. the method combines the mode of multiple comparison of the amplitude image and the phase image, distinguishes the influence of the RTV coating thickness variation from the influence of the debonding defect under the coating, prevents the influence of the RTV coating thickness variation from being superposed and mixed with the influence of the debonding defect under the coating, and enhances the detection accuracy.
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FIG. 1 is a flow chart of the method of the present invention;
fig. 2 is a schematic view of a standard.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1, a method for detecting defects of an RTV coating of a power transmission system includes the following steps:
step 1, acquiring an infrared image of an object to be detected by adopting a phase-locked thermal imaging detection method; namely, the object to be detected is excited, and corresponding infrared images are acquired.
And 2, obtaining an amplitude image and a phase image of the object to be detected through calculation according to the infrared image.
And 3, acquiring an abnormal area according to the amplitude image and the phase image of the object to be detected.
According to the amplitude image and the phase image of the object to be detected, taking the area with abnormal amplitude and/or abnormal phase difference as an abnormal area; namely, an area with abnormal amplitude (i.e. the amplitude is obviously different from other areas), whether the phase difference of the area is abnormal or not, the area is an abnormal area, and similarly, an area with abnormal phase difference, whether the amplitude of the area is abnormal or not, the area is an abnormal area.
Step 4, performing RTV coating defect detection according to the amplitude of the abnormal area, the phase difference of the abnormal area, the amplitude image of the preset standard component and the phase image of the preset standard component; and (3) obtaining a phase image and an amplitude image of the standard part according to the method in the step (1-2), wherein the surface of the standard part is coated with an RTV coating which is made of the same material as the object to be detected, and the thickness of the RTV coating is gradually increased from left to right and is uniform and unchanged from top to bottom, as shown in figure 2.
If the amplitude of the abnormal area is different from the amplitudes of other areas in the amplitude image of the object to be detected, and the phase difference of the abnormal area is not different from the phase difference of other areas in the amplitude image of the object to be detected, the thickness of the RTV coating of the abnormal area is not changed, but the phenomenon of debonding exists under the RTV coating;
if the amplitude of the abnormal area is not different from the amplitudes of other areas in the amplitude image of the object to be detected, and the phase difference of the abnormal area is not different from the phase differences of other areas in the amplitude image of the object to be detected, the thickness of the RTV coating of the abnormal area changes, but whether the debonding phenomenon exists cannot be judged, and whether the debonding phenomenon exists under the RTV coating needs to be further judged according to the amplitude image of the preset standard component and the phase image of the preset standard component.
The specific process is as follows:
s1) acquiring a position X with the same phase difference as that of the abnormal area in the preset standard component according to the preset standard component phase image;
s2) obtaining the amplitude of the position X according to the amplitude image of the preset standard component;
s3) if the difference value between the amplitude of the abnormal area and the amplitude of the position X is 0, the phenomenon of debonding does not exist under the RTV coating; and if the difference value between the amplitude of the abnormal region and the amplitude of the position X is not 0, the RTV coating has a debonding phenomenon.
The method is based on the amplitude image and the phase image, realizes the defect detection of the RTV coating, and compared with the traditional visual detection method, the method does not receive the influence of personnel experience, and has higher accuracy and higher detection efficiency; meanwhile, the method combines a mode of multi-contrast of the amplitude image and the phase image, and mutually distinguishes the influence of the RTV coating thickness change and the influence of the debonding defect under the coating, so that the influence of the RTV coating thickness change and the influence of the debonding defect under the coating are prevented from being superposed and mixed, and the detection accuracy is enhanced.
An RTV coating defect detection system for a power transmission system includes,
an infrared image acquisition module: acquiring an infrared image of an object to be detected;
an amplitude phase image acquisition module: acquiring an amplitude image and a phase image of an object to be detected according to the infrared image;
a defect detection module: and performing RTV coating defect detection according to the amplitude image of the object to be detected, the phase image of the object to be detected, the amplitude image of the preset standard part and the phase image of the preset standard part.
A computer readable storage medium storing one or more programs, the one or more programs comprising instructions, which when executed by a computing device, cause the computing device to perform a power transmission system RTV coating defect detection method.
A computing device comprising one or more processors, one or more memories, and one or more programs stored in the one or more memories and configured to be executed by the one or more processors, the one or more programs comprising instructions for performing a power transmission system RTV coating defect detection method.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The present invention is not limited to the above embodiments, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention are included in the scope of the claims of the present invention which are filed as the application.
Claims (10)
1. A transmission system RTV coating defect detection method is characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
acquiring an infrared image of an object to be detected;
acquiring an amplitude image and a phase image of an object to be detected according to the infrared image;
and performing RTV coating defect detection according to the amplitude image of the object to be detected, the phase image of the object to be detected, the amplitude image of the preset standard part and the phase image of the preset standard part.
2. The method of claim 1, wherein the method comprises the steps of: and acquiring an infrared image of the object to be detected by adopting a phase-locking method thermal imaging detection method.
3. The method of claim 1, wherein the method comprises the steps of: according to the amplitude image of the object to be detected, the phase image of the object to be detected, the amplitude image of the preset standard component and the phase image of the preset standard component, the RTV coating defect detection is carried out,
acquiring an abnormal area according to the amplitude image and the phase image of the object to be detected;
and performing RTV coating defect detection according to the amplitude of the abnormal area, the phase difference of the abnormal area, the amplitude image of the preset standard component and the phase image of the preset standard component.
4. A power transmission system RTV coating defect detection method according to claim 3, characterized in that: and according to the amplitude image and the phase image of the object to be detected, taking the area with abnormal amplitude and/or abnormal phase difference as an abnormal area.
5. A power transmission system RTV coating defect detection method according to claim 3, characterized in that: according to the amplitude of the abnormal area, the phase difference of the abnormal area, the amplitude image of the preset standard component and the phase image of the preset standard component, the RTV coating defect detection is carried out,
if the amplitude of the abnormal area is different from the amplitudes of other areas in the amplitude image of the object to be detected, and the phase difference of the abnormal area is not different from the phase difference of other areas in the amplitude image of the object to be detected, the thickness of the RTV coating of the abnormal area is not changed, but the phenomenon of debonding exists under the RTV coating;
and if the amplitude of the abnormal area is not different from the amplitudes of other areas in the amplitude image of the object to be detected, and the phase difference of the abnormal area is not different from the phase differences of other areas in the amplitude image of the object to be detected, judging whether the RTV coating of the abnormal area has a debonding phenomenon or not according to the amplitude image of the preset standard component and the phase image of the preset standard component.
6. The method of claim 5, wherein the method comprises the steps of: judging whether the debonding phenomenon exists under the RTV coating according to the amplitude image of the preset standard component and the phase image of the preset standard component,
acquiring a position X with the same phase difference with the abnormal area in the preset standard component according to the phase image of the preset standard component;
acquiring the amplitude of the position X according to the amplitude image of the preset standard component;
if the difference value between the amplitude of the abnormal area and the amplitude of the position X is 0, the phenomenon of debonding does not exist under the RTV coating;
and if the difference value between the amplitude of the abnormal region and the amplitude of the position X is not 0, the RTV coating has a debonding phenomenon.
7. The method for detecting the defects of the RTV coating of the power transmission system according to any one of claims 1 to 6, wherein: the RTV coating thickness of the standard part is gradually thickened from left to right and is uniform and unchanged from top to bottom.
8. A transmission system RTV coating defect detection system which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
an infrared image acquisition module: acquiring an infrared image of an object to be detected;
an amplitude phase image acquisition module: acquiring an amplitude image and a phase image of an object to be detected according to the infrared image;
a defect detection module: and performing RTV coating defect detection according to the amplitude image of the object to be detected, the phase image of the object to be detected, the amplitude image of the preset standard part and the phase image of the preset standard part.
9. A computer readable storage medium storing one or more programs, characterized in that: the one or more programs include instructions that, when executed by a computing device, cause the computing device to perform any of the methods of claims 1-7.
10. A computing device, characterized by: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
one or more processors, one or more memories, and one or more programs stored in the one or more memories and configured to be executed by the one or more processors, the one or more programs including instructions for performing any of the methods of claims 1-7.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112098462A (en) * | 2020-10-20 | 2020-12-18 | 贵州电网有限责任公司 | Paint layer thickness infrared thermal imaging detection device and detection method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103901073A (en) * | 2014-04-22 | 2014-07-02 | 哈尔滨工业大学 | Phase-shifting frequency modulation-based photo-thermal imaging method |
| CN112098462A (en) * | 2020-10-20 | 2020-12-18 | 贵州电网有限责任公司 | Paint layer thickness infrared thermal imaging detection device and detection method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103901073A (en) * | 2014-04-22 | 2014-07-02 | 哈尔滨工业大学 | Phase-shifting frequency modulation-based photo-thermal imaging method |
| CN112098462A (en) * | 2020-10-20 | 2020-12-18 | 贵州电网有限责任公司 | Paint layer thickness infrared thermal imaging detection device and detection method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112098462A (en) * | 2020-10-20 | 2020-12-18 | 贵州电网有限责任公司 | Paint layer thickness infrared thermal imaging detection device and detection method |
| CN112098462B (en) * | 2020-10-20 | 2022-07-12 | 贵州电网有限责任公司 | Paint layer thickness infrared thermal imaging detection device and detection method |
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