Electric energy meter fault detection device based on infrared and visible light scanning
The electricity meter fault detection device, which uses infrared and visible light scanning, solves the problem of low efficiency in traditional electricity meter fault analysis, realizes accurate detection and automated identification of electricity meter faults, and improves the stability and reliability of the power system.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ELECTRIC POWER RES INST CHINA SOUTHERN POWER GRID CO LTD
- Filing Date
- 2025-08-15
- Publication Date
- 2026-07-21
AI Technical Summary
Traditional methods for analyzing electricity meter faults are inefficient and prone to errors, making it difficult to meet the real-time and intelligent fault analysis requirements of modern power systems.
An infrared and visible light scanning-based electricity meter fault detection device is adopted. It uses infrared and visible light feature scanners to detect electricity meters. Combined with components such as image acquisition module, fault detection module and push cylinder, it realizes automated fault identification and location.
It improves the accuracy and automation of electricity meter fault detection, meeting the power system's requirements for real-time performance and intelligence.
Smart Images
Figure CN224536169U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of power system technology, and in particular to a fault detection device for electricity meters based on infrared and visible light scanning. Background Technology
[0002] In the operation and maintenance management of power systems, electricity meters are key metering devices, and the accuracy and efficiency of their fault analysis are crucial to ensuring the stability and reliability of power supply.
[0003] Traditional methods for analyzing electricity meter faults mainly rely on manual analysis and simple electrical tests, which are inefficient, have large errors, and are difficult to accurately locate faults. Furthermore, they cannot meet the real-time and intelligent fault analysis requirements of modern power systems. Utility Model Content
[0004] Therefore, it is necessary to provide a fault detection device for electricity meters based on infrared and visible light scanning to address the above-mentioned technical problems, which can accurately detect and identify faults in electricity meters.
[0005] In a first aspect, this application provides a fault detection device for an energy meter based on infrared and visible light feature scanning. The device includes a scanning platform, a first tray and a second tray mounted on the scanning platform; wherein the second tray is located vertically above the first tray, and the placement surface of the first tray is opposite to the placement surface of the second tray.
[0006] The first tray has two first parallel slide rails on its surface, a first positioning plate mounted above the two first parallel slide rails, an energy meter tray mounted on the first positioning plate, and a first pushing cylinder mounted between the two first parallel slide rails; wherein, the energy meter tray is used to place the energy meter to be tested; the first pushing cylinder is connected to the first positioning plate and is used to push the first positioning plate to move along the two first parallel slide rails.
[0007] The second tray has two parallel slide rails on its surface, a second positioning plate mounted above the two parallel slide rails, a first scanner mounted on the second positioning plate, and a second push cylinder mounted between the two parallel slide rails. The second push cylinder is connected to the second positioning plate and is used to push the second positioning plate to move along the two parallel slide rails. The first scanner is used to perform infrared and visible light scanning on the energy meter under test during the movement, and to detect faults in the energy meter under test based on the scanning results.
[0008] In one embodiment, the first scanner includes an image acquisition module and a fault detection module;
[0009] The image acquisition module is used to acquire structural images of the inside of the energy meter under test;
[0010] The fault detection module is used to detect faults in the energy meter under test based on the structural image.
[0011] In one embodiment, the image acquisition module includes a thermal imager and a visible light integrated camera; the structural image includes a first image and a second image;
[0012] The visible light integrated camera is used to acquire a first image of the inside of the energy meter under test; wherein the first image represents the visible light characteristics of the energy meter under test;
[0013] The thermal imager is used to acquire a second image of the interior of the energy meter under test; wherein the second image represents the infrared characteristics of the energy meter under test.
[0014] In one embodiment, the first positioning plate includes at least one positioning pin;
[0015] The at least one positioning pin is used to position a preset hole on the energy meter under test in order to determine the position of the energy meter under test.
[0016] In one embodiment, the first positioning plate includes a second scanner;
[0017] The second scanner is used to identify preset holes on the energy meter under test in order to determine the location of the energy meter under test.
[0018] In one embodiment, the electricity meter tray includes at least two different types of trays for holding different types of electricity meters.
[0019] In one embodiment, the different types of trays include at least single-phase meter trays and three-phase meter trays.
[0020] In one embodiment, different types of trays have different clamps for securing the electricity meter.
[0021] In one embodiment, the first positioning plate is fixed to the first tray by a telescopic guide shaft;
[0022] The first positioning plate also includes a first positioning cylinder for adjusting the height of the first positioning plate.
[0023] In one embodiment, the second positioning plate is fixed to the second tray by a guide shaft with telescopic function;
[0024] The second positioning plate also includes a second positioning cylinder for adjusting the height of the second positioning plate.
[0025] The aforementioned energy meter fault detection device based on infrared and visible light scanning ensures the stability of the energy meter under test and the first scanner by introducing a first positioning plate and a second positioning plate. Simultaneously, the introduction of two first parallel slide rails and two second slide rails ensures that both the energy meter under test and the first scanner can move, thus guaranteeing the accuracy of the relative position of the first scanner to the energy meter under test, and consequently ensuring the stability and accuracy of the scanning process. Furthermore, the introduction of a first and a second push cylinder provides power for the movement of both the energy meter under test and the first scanner, ensuring omnidirectional infrared and visible light scanning of the energy meter under test. This device not only achieves the basic function of mobile scanning but also improves the automation level of the detection process through positioning stability, adaptability, and logical closed-loop, eliminating the need for manual intervention. This enhances the accuracy and practicality of fault detection for the energy meter under test, better meeting the needs of actual industrial testing scenarios. Attached Figure Description
[0026] To more clearly illustrate the technical solutions in the embodiments or related technologies of this application, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0027] Figure 1 This is a structural diagram of an energy meter fault detection device based on infrared and visible light scanning in one embodiment.
[0028] Figure 2 This is a structural diagram of the energy meter tray in one embodiment;
[0029] Figure 3 This is a front view of the first tray in an energy meter fault detection device in one embodiment;
[0030] Figure 4 This is a front view of the second tray in an energy meter fault detection device in one embodiment. Detailed Implementation
[0031] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.
[0032] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application. In the description of this application, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0033] The serial numbers assigned to components in this application, such as "first" and "second," are merely for distinguishing the described objects and have no sequential or technical meaning. Unless otherwise specified, the term "connection" in this application includes both direct and indirect connections. It should be understood that the terms "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are used only for the convenience of describing this application and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.
[0034] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature. In this application, the distinction between elements is not based on differences in name, but rather on differences in function.
[0035] Currently, as a critical metering device, the accuracy and efficiency of fault analysis of electricity meters are crucial for ensuring the stability and reliability of power supply. Based on this, a fault detection device for electricity meters based on infrared and visible light scanning is provided. Figure 1 As shown, Figure 1(a) is a front view of an electricity meter fault detection device, which includes a scanning platform 101, a first tray 102 and a second tray 103 mounted on the scanning platform; the second tray is located vertically above the first tray, and the placement surface of the first tray is opposite to the placement surface of the second tray. Figure 1 (b) is a structural diagram of the first tray in the electricity meter fault detection device. The first tray has two first parallel slide rails 104 on its surface, a first positioning plate 105 mounted above the two first parallel slide rails, an electricity meter tray mounted on the first positioning plate, and a first pushing cylinder 106 mounted between the two first parallel slide rails. The electricity meter tray is used to place the electricity meter to be tested; the first pushing cylinder is connected to the first positioning plate and is used to push the first positioning plate to move along the two first parallel slide rails. Figure 1 (c) is a structural diagram of the second tray of the electricity meter fault detection device. The second tray has two second parallel slide rails 107 on its surface, a second positioning plate 108 mounted above the two parallel slide rails, a first scanner mounted on the second positioning plate, and a second push cylinder 109 mounted between the two parallel slide rails. The second push cylinder is connected to the second positioning plate and is used to push the second positioning plate to move along the two parallel slide rails. The first scanner is used to perform infrared and visible light scanning on the electricity meter under test during the movement, and to detect faults in the electricity meter under test based on the scanning results.
[0036] The scanning platform is the supporting component of the electricity meter fault detection device, providing a flat and stable mounting surface. It integrates other components within the device, ensuring the relative stability of each component. In this embodiment, the scanning platform is made of a material with a certain degree of rigidity. For example, it can be made of metal sheet or alloy to prevent deformation from affecting the installation accuracy of other components. Simultaneously, the surface of the scanning platform generally needs to be flat. The scanning platform includes an auxiliary support structure, comprising a support column and two support platforms. The lower support platform is used to fix the first tray, which can be secured using a combination of locating pins and bolts. Similarly, the upper support platform can also be used to fix the second tray using a combination of locating pins and bolts.
[0037] The two first parallel slide rails and the second parallel slide rail are parallel and serve as a structural component to guide the directional movement of the first scanner or the energy meter under test. The spacing between the two first parallel slide rails or the second parallel slide rail is uniform, and their directions are completely consistent, ensuring that the first scanner or the energy meter under test can move in a straight line. The two first parallel slide rails and the second parallel slide rail can be long, rigid structures, such as metal guide rails. The first positioning plate is fixed in position and can be fixed to the first tray above the two first parallel slide rails by screws. The first positioning plate has multiple preset holes for fixing the energy meter tray. The energy meter tray can be removed from the first positioning plate. The energy meter under test can be placed in the energy meter tray.
[0038] The second positioning plate is fixed in position and can be secured to the second tray above the two second parallel slide rails with screws. The second positioning plate has multiple preset holes for fixing the first scanner. The first scanner integrates optical scanning elements, such as infrared scanning elements. The first scanner also integrates a fault detection module for analyzing the scanning results of the energy meter under test obtained by the optical scanning elements, thereby detecting and identifying faults in the energy meter under test.
[0039] The first push cylinder is a driving component that provides power to the energy meter under test. The first push cylinder uses the thrust of compressed air to drive the first positioning plate and the energy meter under test to move linearly along the two first parallel slide rails.
[0040] The second push cylinder is a driving component that provides power to the first scanner. The second push cylinder can use the thrust of compressed air to drive the second positioning plate and the first scanner to move linearly along two second parallel slide rails, so as to realize the scanning of the energy meter to be tested.
[0041] It should be noted that the meter under test needs to be removed from its cover and placed in the meter tray for fault detection.
[0042] The aforementioned energy meter fault detection device based on infrared and visible light scanning ensures the stability of the energy meter under test and the first scanner by introducing a first positioning plate and a second positioning plate. Simultaneously, the introduction of two first parallel slide rails and two second slide rails ensures that both the energy meter under test and the first scanner can move, thus guaranteeing the accuracy of the relative position of the first scanner to the energy meter under test, and consequently ensuring the stability and accuracy of the scanning process. Furthermore, the introduction of a first and a second push cylinder provides power for the movement of both the energy meter under test and the first scanner, ensuring omnidirectional infrared and visible light scanning of the energy meter under test. This device not only achieves the basic function of mobile scanning but also improves the automation level of the detection process through positioning stability, adaptability, and logical closed-loop, eliminating the need for manual intervention. This enhances the accuracy and practicality of fault detection for the energy meter under test, better meeting the needs of actual industrial testing scenarios.
[0043] It should be noted that, considering the significant differences in infrared thermal distribution between normal and fault states during the operation of an electricity meter, faults in the meter under test can be detected based on infrared thermal analysis. Therefore, the first scanner includes an image acquisition module and a fault detection module. The image acquisition module is used to acquire structural images of the internal structure of the electricity meter under test; the fault detection module is used to detect faults in the electricity meter under test based on the structural images. The image acquisition module includes a thermal imager and a visible light integrated camera. The structural images include a first image and a second image. The visible light integrated camera is used to acquire the first image of the internal structure of the electricity meter under test; the first image is a visible light image, representing the visible light characteristics of the electricity meter under test. The thermal imager is used to acquire the second image of the internal structure of the electricity meter under test; the second image is an infrared image, representing the infrared characteristics of the electricity meter under test. The visible light integrated camera can be a high-resolution visible light integrated camera, and the thermal imager uses infrared thermal imaging technology to detect the temperature distribution of various components inside the electricity meter (e.g., power supply chips, three-terminal voltage regulators, transformers, etc.). A visible light integrated camera captures images of the internal circuit board and components of an energy meter from different angles to obtain a first image. The image is ensured to be clear and complete, and the camera's parameters, such as focal length and aperture, are recorded during the capture. Following the operating requirements of a thermal imager, an infrared image of the energy meter's interior is acquired simultaneously from the same angle as the visible light integrated camera, maintaining an appropriate distance and angle to obtain a second image. Parameters such as ambient temperature are recorded to ensure accurate temperature distribution information. It should be noted that, in this embodiment, to ensure consistency in the angle and timing of the images captured by the visible light integrated camera and the thermal imager, they can be integrated into a single module. That is, the first and second images are two images of identical size and angle, with the first image being a visible light image and the second image being an infrared image.
[0044] The first scanner also includes a storage module for storing the first image and the second image, and for adjusting the first image and the second image, such as adjusting the contrast and brightness of the first image and the second image, and performing preprocessing operations such as filtering and denoising on the first image and the second image to enhance the visual effect of the first image and the second image and improve the image purity and quality of the first image and the second image.
[0045] In addition, the fault detection module in the first scanner integrates a trained fault detection model for identifying faults in the energy meter under test.
[0046] In one embodiment, to ensure the stability and accuracy of the energy meter under test during the testing process, it is necessary to ensure the stability of the energy meter. Based on this, the first positioning plate includes at least one positioning pin; the at least one positioning pin is used to locate a preset hole on the energy meter under test to determine the position of the energy meter. The positioning pin is a columnar protrusion fixed to the first positioning plate, typically made of metal, and its diameter and length precisely match the preset hole on the energy meter under test. When the energy meter under test is placed on the first positioning plate, the positioning pin on the first positioning plate inserts into the preset hole of the energy meter under test to restrict the degree of freedom of movement of the energy meter and achieve positioning of the energy meter under test. It should be noted that by setting the positioning pin on the first positioning plate, for multiple energy meters of the same model, the positioning pin can ensure that the position of each energy meter on the first positioning plate is completely consistent. Therefore, the scanning parameters of the first scanner do not need to be adjusted, ensuring accurate correspondence of the scanning area and improving the consistency of the test.
[0047] In one embodiment, optical positioning can also be used to ensure the stability of the energy meter under test. The first positioning plate includes a second scanner; the second scanner is used to identify preset hole positions on the energy meter under test to determine the position of the energy meter under test. The second scanner can be a laser scanner, which emits a laser beam towards the energy meter under test placed on the first positioning plate. The laser beam is reflected after encountering the preset hole position on the energy meter under test, and the laser scanner receives the reflected signal. Furthermore, the laser scanner can analyze the contour changes of the reflected signal through algorithms. The preset hole position will cause the laser reflection path to be different from the planar area, thereby accurately identifying and predicting the position of the hole position. Furthermore, based on the standard design of the preset hole position and combined with the identified actual hole position coordinates, the placement position of the energy meter under test can be calculated.
[0048] Furthermore, considering that there are various types of electricity meters, and that these different types are not compatible, in this embodiment, the electricity meter tray includes at least two different types of trays for placing different types of electricity meters. For example... Figure 2The diagram shows the structure of an energy meter tray according to an embodiment of this application. Different types of trays include at least a single-phase meter tray 201 and a three-phase meter tray 202. Considering other compatible energy meter types, different types of trays may also include a compatibility tray 203. Furthermore, to ensure the stability of the energy meter under test within the tray, different types of trays use different clamps for securing the energy meter. The size and type of the clamps are determined by the type of energy meter, enabling them to accommodate energy meters of different sizes and models without damaging the meter during the fixing process.
[0049] like Figure 3 As shown, in Figure 1 Based on this, the front view of the first tray in the electricity meter fault detection device is shown. The electricity meter fault detection device also includes a guide shaft 301. The first positioning plate is fixed on the first tray by the guide shaft with telescopic function. The first positioning plate also includes a first positioning cylinder for adjusting the height of the first positioning plate so that the first positioning plate can move up and down so that the electricity meter under test on the first positioning plate is in a suitable position.
[0050] like Figure 4 As shown, in Figure 1 Based on this, the front view of the second tray in the electricity meter fault detection device is shown. The electricity meter fault detection device also includes a guide shaft 401. The second positioning plate is fixed on the second tray by the guide shaft with telescopic function. The second positioning plate also includes a second positioning cylinder for adjusting the height of the second positioning plate so that the second positioning plate can move up and down so that the first scanner on the second positioning plate is in a suitable position.
[0051] The fault detection module in the first scanner includes a first feature extraction module, a second feature extraction module, and a fault detection module. The first feature extraction module is used to extract features from the first image. It integrates edge detection algorithms (such as the Sobel operator and the Canny operator) to perform edge detection on the first image, extracting the contour and shape features of each component in the energy meter under test, and using texture analysis algorithms (such as the gray-level co-occurrence matrix) to calculate texture feature parameters, including contrast, correlation, energy, and entropy.
[0052] The second feature extraction module is used to extract features from the second image. The second feature extraction module can determine the temperature value of each pixel in the second image and calculate the statistical features such as the mean temperature and standard deviation of different areas of the energy meter under test, and analyze the uniformity of temperature distribution. Furthermore, image segmentation algorithms (such as threshold segmentation and region growing algorithms) are used to divide areas with obvious temperature differences and extract features such as the shape and size of suspected fault areas.
[0053] The fault detection module integrates a pre-trained fault detection model, which can be trained based on sample data. A large dataset of labeled first and second images of electricity meters can be collected, and features from the first and second images can be extracted as sample data to cover both normal and faulty states. Further, the fault detection model is trained using this sample data to obtain a pre-trained model. The first features extracted by the first feature extraction module and the second features extracted by the second feature extraction module can then be input into the fault detection module to obtain the detection results output by the integrated fault detection model. These results include information such as the probability, type, and severity of faults in each area of the electricity meter under test.
[0054] To achieve precise fault location, the first scanner can also integrate a fault location module. This module can analyze and locate the fault based on the detection results. After acquiring the first and second images, the fault location module identifies the components within the energy meter under test based on these images. Specifically, it first identifies the heating area in the second image, then performs image segmentation to focus on the heating area. Furthermore, it uses a target detection algorithm to represent the corresponding first image and outputs the faulty component. The integrated target detection algorithm can be YOLO (You Only Look Once) to identify and detect targets in the segmented circuit diagram, outputting faulty component information in a structured manner and generating faulty component labeling results. This process significantly shortens the fault analysis time, greatly improving analysis efficiency, especially when dealing with a large number of energy meter fault analysis tasks, enabling rapid processing and meeting the high-efficiency requirements of practical applications.
[0055] Furthermore, to make the detection results clearer, the electricity meter fault detection device also includes a display device connected to the first scanner; the display device is used to display the fault detection results from the first scanner. In other words, the fault device labeling results can be sent to the display device so that it can display the faulty device in the electricity meter under test. It is understandable that by introducing the fault detection module, the analysis accuracy is improved and the false positive rate is reduced.
[0056] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0057] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.
Claims
1. A fault detection device for electricity meters based on infrared and visible light scanning, characterized in that, The device includes a scanning platform, a first tray and a second tray mounted on the scanning platform; wherein the second tray is located vertically above the first tray, and the placement surface of the first tray is opposite to the placement surface of the second tray; The first tray has two first parallel slide rails on its surface, a first positioning plate mounted above the two first parallel slide rails, an energy meter tray mounted on the first positioning plate, and a first pushing cylinder mounted between the two first parallel slide rails; wherein, the energy meter tray is used to place the energy meter to be tested; the first pushing cylinder is connected to the first positioning plate and is used to push the first positioning plate to move along the two first parallel slide rails. The second tray has two parallel slide rails on its surface, a second positioning plate mounted above the two parallel slide rails, a first scanner mounted on the second positioning plate, and a second push cylinder mounted between the two parallel slide rails. The second push cylinder is connected to the second positioning plate and is used to push the second positioning plate to move along the two parallel slide rails. The first scanner is used to perform infrared and visible light scanning on the energy meter under test during the movement, and to detect faults in the energy meter under test based on the scanning results.
2. The apparatus according to claim 1, characterized in that, The first scanner includes an image acquisition module and a fault detection module; The image acquisition module is used to acquire structural images of the inside of the energy meter under test; The fault detection module is used to detect faults in the energy meter under test based on the structural image.
3. The apparatus according to claim 2, characterized in that, The image acquisition module includes a thermal imager and a visible light integrated camera; the structural image includes a first image and a second image; The visible light integrated camera is used to acquire a first image of the inside of the energy meter under test; wherein the first image represents the visible light characteristics of the energy meter under test; The thermal imager is used to acquire a second image of the interior of the energy meter under test; wherein the second image represents the infrared characteristics of the energy meter under test.
4. The apparatus according to claim 1, characterized in that, The first positioning plate includes at least one positioning pin; The at least one positioning pin is used to position a preset hole on the energy meter under test in order to determine the position of the energy meter under test.
5. The apparatus according to claim 1, characterized in that, The first positioning plate includes a second scanner; The second scanner is used to identify preset holes on the energy meter under test in order to determine the location of the energy meter under test.
6. The apparatus according to claim 1, characterized in that, The electricity meter tray includes at least two different types of trays for placing different types of electricity meters.
7. The apparatus according to claim 6, characterized in that, The different types of trays include at least single-phase meter trays and three-phase meter trays.
8. The apparatus according to claim 6, characterized in that, Different types of trays have different clamps, which are used to secure the electricity meter.
9. The apparatus according to claim 1, characterized in that, The first positioning plate is fixed to the first tray by a guide shaft with telescopic function; The first positioning plate also includes a first positioning cylinder for adjusting the height of the first positioning plate.
10. The apparatus according to claim 1, characterized in that, The second positioning plate is fixed to the second tray by a guide shaft with telescopic function; The second positioning plate also includes a second positioning cylinder for adjusting the height of the second positioning plate.