Electric energy meter electrical connection relation reverse solving method and device, computer equipment and electric energy meter electrical connection relation reverse solving equipment

Abstract

The invention relates to an electric energy meter electrical connection relation reverse solving method and device, computer equipment and electric energy meter electrical connection relation reverse solving equipment, and the method comprises the steps: obtaining a multi-angle image of a circuit board of a to-be-recognized electric energy meter, and the multi-angle image comprises a plane projection image shot perpendicular to a plane where the circuit board is located; based on the multi-angle image, constructing a three-dimensional model of each electronic component by using a three-dimensional reconstruction technology; comparing the three-dimensional model of each electronic component with a preset electronic component model to determine the type of each electronic component; based on the plane projection image, determining the relative position of each electronic component on the circuit board; and according to the type of each electronic component and the relative position of each electronic component on the circuit board, determining the electrical connection relationship of the circuit board of the to-be-identified electric energy meter. By adopting the method, each electronic element on the circuit board can be accurately identified and positioned, and the electrical connection relationship between the elements can be accurately deduced.

Description

Technical Field

[0001] The present application relates to the technical field of electric energy meters, and in particular to a method, device, computer equipment and equipment for inversely determining the electrical connection relationship of an electric energy meter. Background Art

[0002] As the technology of electric energy meters advances, their internal structures become increasingly complex. The miniaturization and high-density layout of components make traditional manual identification of electrical connections difficult and error-prone. At the same time, in order to protect the integrity of the equipment, non-invasive electrical connection identification methods are particularly important.

[0003] Since disassembly inspection is not allowed, existing detection methods are difficult to meet the requirements for circuit complexity and fault diagnosis accuracy. In addition, modern energy meters need to monitor energy usage in real time, and traditional technologies are difficult to process high-speed, large-scale real-time data. In addition, there are many types of energy meters on the market, and the electrical designs vary greatly, requiring identification technology to have good adaptability.

[0004] Therefore, there is an urgent need to develop a non-invasive, efficient and accurate electrical connection inverse method to adapt to the characteristics of miniaturization, high density and complex circuit design of modern electricity meters, and to achieve non-destructive testing and precise fault location. Summary of the invention

[0005] Based on this, it is necessary to provide a method, device, computer equipment and equipment for inversely determining the electrical connection relationship of an electric energy meter in order to solve the above technical problems.

[0006] In a first aspect, the present application provides a method for inversely determining the electrical connection relationship of an electric energy meter, the method comprising:

[0007] Acquire a multi-angle image of a circuit board of the electric energy meter to be identified, wherein the multi-angle image includes a plane projection image taken perpendicular to the plane where the circuit board is located;

[0008] Based on multi-angle images, 3D models of each electronic component are constructed using 3D reconstruction technology;

[0009] Compare the three-dimensional model of each electronic component with a preset electronic component model to determine the type of each electronic component;

[0010] Based on the plane projection image, determine the relative position of each electronic component on the circuit board;

[0011] The electrical connection relationship of the circuit board of the electric energy meter to be identified is determined according to the type of each electronic component and the relative position of each electronic component on the circuit board.

[0012] In one embodiment, based on multi-angle images, a three-dimensional model of each electronic component is constructed using a three-dimensional reconstruction technology, including:

[0013] Extract feature information from multi-angle images based on image processing algorithms; the feature information includes color information, shape information, size information, identification information and coordinate information of each electronic component;

[0014] Based on the feature information, the 3D model of each electronic component is constructed using 3D reconstruction technology.

[0015] In one embodiment, determining the relative position of each electronic component on the circuit board based on the planar projection image includes:

[0016] The relative positions of the electronic components on the circuit board are calculated according to the target reference points in the plane projection image; the target reference points include the panel reference points, the unit reference points and the local reference points.

[0017] In one embodiment, determining the relative position of each electronic component on the circuit board based on the planar projection image further includes:

[0018] The coordinate parameters of the calibration plate are used to calibrate the relative positions of the electronic components on the circuit board.

[0019] In one embodiment, before the step of constructing a three-dimensional model of each electronic component using a three-dimensional reconstruction technology based on multi-angle images, the method further includes:

[0020] De-noising and clarity enhancement are performed on multi-angle images.

[0021] In a second aspect, the present application further provides a device for inversely determining the electrical connection relationship of an electric energy meter, the device comprising:

[0022] An image acquisition module, used to acquire multi-angle images of the circuit board of the electric energy meter to be identified, wherein the multi-angle images include a plane projection image taken perpendicular to the plane where the circuit board is located;

[0023] A three-dimensional model building module, used to build a three-dimensional model of each electronic component based on multi-angle images using three-dimensional reconstruction technology;

[0024] An electronic component type confirmation module is used to compare the three-dimensional model of each electronic component with a preset electronic component model to determine the type of each electronic component;

[0025] A relative position confirmation module is used to determine the relative position of each electronic component on the circuit board based on the plane projection image;

[0026] The electrical connection relationship confirmation module is used to determine the electrical connection relationship of the circuit board of the electric energy meter to be identified according to the type of each electronic component and the relative position of each electronic component on the circuit board.

[0027] In a third aspect, the present application further provides a computer device, including a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of the method in the above embodiment when executing the computer program.

[0028] In a fourth aspect, the present application further provides a device for inversely determining the electrical connection relationship of an electric energy meter, comprising:

[0029] A circuit board placement platform, used for placing the circuit board of the electric energy meter to be identified;

[0030] A camera, used to collect multi-angle images of the circuit board of the electric energy meter to be identified;

[0031] Like the computer device in the above embodiment, the computer device is connected to the camera.

[0032] In a fifth aspect, the present application also provides a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, the steps of the method in the above embodiment are implemented.

[0033] In a sixth aspect, the present application also provides a computer program product, including a computer program, which implements the steps of the method in the above embodiment when the computer program is executed by a processor.

[0034] The above-mentioned method, device, computer equipment and device for inversely determining the electrical connection relationship of an electric energy meter have at least the following beneficial effects:

[0035] The above-mentioned inverse method for the electrical connection relationship of the electric energy meter, by acquiring multi-angle images of the electric energy meter circuit board and using image processing technology and three-dimensional reconstruction algorithms, can not only accurately identify and locate each electronic component on the circuit board, but also accurately infer the electrical connection relationship between the components, thereby improving the efficiency and accuracy of circuit board analysis, reducing errors caused by manual operation, and providing strong support for the maintenance, fault diagnosis and design improvement of the electric energy meter. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the drawings required for use in the embodiments of the present application or related technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0037] FIG1 is an application environment diagram of a method for inversely determining electrical connection relations of an electric energy meter in one embodiment;

[0038] FIG2 is a schematic flow chart of a method for inversely determining the electrical connection relationship of an electric energy meter in one embodiment;

[0039] FIG3 is a structural block diagram of a device for inversely determining the electrical connection relationship of an electric energy meter in one embodiment;

[0040] FIG. 4 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0042] The inverse method for the electrical connection relationship of the electric energy meter provided in the embodiment of the present application can be applied in the application environment as shown in FIG1. ​​Among them, the industrial computer 102 is connected to the camera 104, and the camera is used to collect multi-angle images of the circuit board of the electric energy meter to be identified. The industrial computer 102 obtains multi-angle images of the circuit board 900 of the electric energy meter to be identified, and the multi-angle images include plane projection images taken perpendicular to the plane where the circuit board is located; based on the multi-angle images, a three-dimensional model of each electronic component is constructed using three-dimensional reconstruction technology; the three-dimensional model of each electronic component is compared with the preset electronic component model to determine the type of each electronic component; based on the plane projection image, the relative position of each electronic component on the circuit board is determined; according to the type of each electronic component and the relative position of each electronic component on the circuit board, the electrical connection relationship of the circuit board 900 of the electric energy meter to be identified is determined.

[0043] In an exemplary embodiment, as shown in FIG2 , a method for inversely determining the electrical connection relationship of an electric energy meter is provided, and the method is described by taking the application of the method to the industrial computer 102 in FIG1 as an example, and includes the following steps S202 to S210. Among them:

[0044] S202, obtaining a multi-angle image of a circuit board of the electric energy meter to be identified, wherein the multi-angle image includes a planar projection image taken perpendicular to the plane where the circuit board is located.

[0045] Exemplarily, one or more cameras are used to photograph the circuit board of the electric energy meter from different angles to obtain multi-angle image data, wherein at least one of the images is taken perpendicular to the surface of the circuit board, thereby ensuring that the layout and plane position information of the components on the circuit board can be accurately reflected, so as to facilitate a more comprehensive analysis of the design and connection of the circuit board in subsequent processing.

[0046] S204, constructing a three-dimensional model of each electronic component using three-dimensional reconstruction technology based on the multi-angle images.

[0047] Exemplarily, by analyzing the acquired multi-angle images, computer vision algorithms and three-dimensional reconstruction techniques are used to calculate the position and shape of each electronic component, thereby constructing a three-dimensional model of these components. Specifically, techniques such as feature point matching, multi-view geometry calculation, and surface reconstruction can be used to extract spatial information from two-dimensional images of different perspectives, and finally form an accurate three-dimensional model to provide a basis for subsequent circuit connection relationship identification. For example, components such as resistors and capacitors can be identified from images of electric energy meter circuit boards taken from multiple angles, and feature detection algorithms such as SIFT (Scale Invariant Feature Transform) or SURF (Speeded Robust Features) can be used to find key feature points in these images; then multi-view geometry techniques such as stereo matching and Structure from Motion (SFM) are used to restore the spatial position and shape of the components, thereby creating a three-dimensional model of each component. In this way, an accurate three-dimensional representation of all components on the circuit board can be obtained, in preparation for further analysis of the electrical connection relationship between them.

[0048] S206 , comparing the three-dimensional model of each electronic component with a preset electronic component model to determine the type of each electronic component.

[0049] Exemplarily, the three-dimensional model of each electronic component constructed in the step is compared and analyzed with the standard electronic component model pre-stored in the database, and the specific type of each component is identified and confirmed by comparing the attributes such as shape, size and characteristic mark, such as determining whether a component is a resistor, capacitor or integrated circuit, so as to provide necessary information for subsequent circuit function analysis. For example, the three-dimensional model of an unknown resistor constructed previously is compared with the standard resistor model stored in the database, and the model is matched with the standard model by measuring the length, width and height and identifying the surface silk screen or color coding, so as to determine the exact parameters and type of the unknown component, such as confirming that it is a 1kΩ carbon film resistor.

[0050] S208, determining the relative position of each electronic component on the circuit board based on the planar projection image.

[0051] Exemplarily, by analyzing the obtained planar projection image taken perpendicular to the surface of the circuit board, image processing technology is used to identify the position coordinates of each electronic component in the image, and then their relative position relationship on the actual circuit board is determined, providing a basis for determining the circuit board layout and establishing the connection relationship between components.

[0052] S210, determining the electrical connection relationship of the circuit board of the electric energy meter to be identified according to the type of each electronic component and the relative position of each electronic component on the circuit board.

[0053] Exemplarily, in combination with the determined electronic component type and its relative position information on the circuit board, by analyzing the connection traces and possible electrical connection points between the components, it is inferred how the components on the circuit board are electrically connected, thereby establishing a functional connection diagram of the entire circuit, and completing the determination of the electrical connection relationship of the circuit board of the electric energy meter to be identified. For example, based on the known types of a resistor (R1) and a capacitor (C1) and their positions on the circuit board, the metal wiring path between the two is analyzed. If it is found that a metal wire is drawn from one end of the resistor and connected to one side of the capacitor, it can be inferred that the resistor and capacitor are connected in series on this circuit. In this way, the functional connection relationship of this part of the circuit can be determined, and then the overall electrical connection relationship of the circuit board of the electric energy meter to be identified can be determined.

[0054] The above-mentioned inverse method for the electrical connection relationship of the electric energy meter, by acquiring multi-angle images of the electric energy meter circuit board and using image processing technology and three-dimensional reconstruction algorithms, can not only accurately identify and locate each electronic component on the circuit board, but also accurately infer the electrical connection relationship between the components, thereby improving the efficiency and accuracy of circuit board analysis, reducing errors caused by manual operation, and providing strong support for the maintenance, fault diagnosis and design improvement of the electric energy meter.

[0055] In an exemplary embodiment, based on multi-angle images, a three-dimensional model of each electronic component is constructed using a three-dimensional reconstruction technology, including:

[0056] Step 1: Extract feature information from multi-angle images based on image processing algorithms; the feature information includes color information, shape information, size information, identification information and coordinate information of each electronic component.

[0057] For example, by applying image processing algorithms such as edge detection, threshold segmentation, and feature point detection to multi-angle images, the color, shape, size, any printed or engraved identification (such as model, parameters, etc.) of the electronic components, and their coordinate information in the image can be extracted from the image. Specifically, a Canny edge detector can be used to identify the outline of the component, color space conversion and threshold segmentation can be used to extract color information, and template matching or optical character recognition (OCR) technology can be used to read the identification information on the component, while the position coordinates of these features in the image are recorded to provide basic data for subsequent three-dimensional modeling.

[0058] Step 2: Based on the feature information, a 3D model of each electronic component is constructed using 3D reconstruction technology.

[0059] For example, the feature information extracted above is combined with multi-view geometry and 3D reconstruction algorithms, such as structure from motion (SfM) or multi-view stereo matching technology, to match the feature points in the 2D image, estimate the camera pose and the spatial position of the electronic component, and then restore the 3D geometry of the electronic component through triangulation or other surface reconstruction methods, such as Poisson surface reconstruction, and finally generate a 3D model of each electronic component. This allows even images taken from different angles to be integrated into a consistent 3D representation, thereby accurately reflecting the true shape and position of the component.

[0060] In this embodiment, by extracting feature information from multi-angle images and using three-dimensional reconstruction technology to generate a three-dimensional model of electronic components, the true shape and spatial layout of the components on the circuit board can be reconstructed efficiently and accurately, greatly improving the accuracy and speed of circuit analysis, reducing the workload and errors of traditional manual surveying and identification, and providing strong technical support for circuit design verification, troubleshooting and subsequent maintenance work.

[0061] In an exemplary embodiment, determining the relative position of each electronic component on the circuit board based on the planar projection image includes:

[0062] The relative positions of the electronic components on the circuit board are calculated according to the target reference points in the plane projection image; the target reference points include the panel reference points, the unit reference points and the local reference points.

[0063] For example, a series of target reference points are selected in the planar projection image of the circuit board. These reference points can be panel reference points (for example, diagonal points of the entire circuit board), unit reference points (for example, the center point of a specific functional module) or local reference points (for example, the position of a significant component). The position of each electronic component in the image is identified and marked using image processing technology. Subsequently, the precise position coordinates of these components relative to the circuit board or to each other are calculated by measuring the distance and angle relationship between each component and the selected reference point.

[0064] In this embodiment, by selecting reference points in the planar projection image of the circuit board and using image processing technology to calculate the relative positions of each electronic component, the layout of the components on the circuit board can be accurately determined, which not only improves the accuracy of positioning, but also greatly simplifies the manual measurement process, reduces human errors, and provides reliable data support for circuit board design verification, fault diagnosis and automated assembly.

[0065] In an exemplary embodiment, determining the relative position of each electronic component on the circuit board based on the planar projection image further includes:

[0066] The coordinate parameters of the calibration plate are used to calibrate the relative positions of the electronic components on the circuit board.

[0067] Exemplarily, in order to improve the measurement accuracy of the relative position of electronic components on a circuit board, a calibration plate with known coordinate parameters is used for calibration. Specifically, while taking the image of the circuit board, the calibration plate is placed in the same scene to ensure that the calibration plate and the circuit board are under the same imaging conditions. The feature points on the calibration plate are identified by image processing technology, and the intrinsic and extrinsic parameters of the camera are calculated based on the actual coordinates of these feature points and the coordinates in the image, that is, the camera is calibrated. The calculated camera parameters are used to correct the position of each electronic component in the circuit board image, thereby eliminating measurement errors caused by factors such as camera distortion, ensuring the accuracy of the position information of each electronic component, and improving the reliability of subsequent circuit analysis.

[0068] In this embodiment, the camera is calibrated for the captured circuit board image by using a calibration plate with known coordinate parameters, and the position of the electronic components is calibrated accordingly, which effectively eliminates the influence of camera distortion and other imaging errors on the measurement results, significantly improves the accuracy of the relative position measurement of the electronic components on the circuit board, and thus improves the reliability and accuracy of circuit analysis.

[0069] In an exemplary embodiment, before the step of constructing a three-dimensional model of each electronic component using a three-dimensional reconstruction technology based on multi-angle images, the method further includes:

[0070] De-noising and clarity enhancement are performed on multi-angle images.

[0071] For example, before using multi-angle images for 3D reconstruction, these images will be preprocessed, including denoising and clarity enhancement. The denoising process can use median filtering, Gaussian filtering and other techniques to remove random noise points in the image, while clarity enhancement may improve image quality through methods such as histogram equalization, contrast stretching, and sharpening filtering, making the details in the image more obvious.

[0072] In this embodiment, by performing denoising and clarity enhancement processing on multi-angle images, the image quality is significantly improved, noise interference is reduced, and the visibility of image details is enhanced, thereby providing clearer and more accurate input data for subsequent feature extraction and three-dimensional reconstruction, ensuring the construction accuracy and reliability of the three-dimensional model.

[0073] It should be understood that, although the various steps in the flowcharts involved in the above-mentioned embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-mentioned embodiments can include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0074] Based on the same inventive concept, the embodiment of the present application also provides an electric energy meter electrical connection relationship inversion device for implementing the above-mentioned electric energy meter electrical connection relationship inversion method. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above-mentioned method, so the specific limitations in one or more embodiments of the electric energy meter electrical connection relationship inversion device provided below can refer to the limitations of the electric energy meter electrical connection relationship inversion method above, and will not be repeated here.

[0075] In an exemplary embodiment, as shown in FIG3 , a device for inversely determining the electrical connection relationship of an electric energy meter is provided, comprising: an image acquisition module 302, a three-dimensional model construction module 304, an electronic component type confirmation module 306, a relative position confirmation module 308, and an electrical connection relationship confirmation module 310, wherein:

[0076] The image acquisition module 302 is used to acquire multi-angle images of the circuit board of the electric energy meter to be identified, and the multi-angle images include a planar projection image taken perpendicular to the plane where the circuit board is located.

[0077] The three-dimensional model building module 304 is used to build a three-dimensional model of each electronic component based on the multi-angle images using three-dimensional reconstruction technology.

[0078] The electronic component type confirmation module 306 is used to compare the three-dimensional model of each electronic component with a preset electronic component model to determine the type of each electronic component.

[0079] The relative position confirmation module 308 is used to determine the relative position of each electronic component on the circuit board based on the planar projection image.

[0080] The electrical connection relationship confirmation module 310 is used to determine the electrical connection relationship of the circuit board of the electric energy meter to be identified according to the type of each electronic component and the relative position of each electronic component on the circuit board.

[0081] In an exemplary embodiment, the three-dimensional model building module 304 includes:

[0082] The feature information extraction unit is used to extract feature information from multi-angle images based on an image processing algorithm; the feature information includes color information, shape information, size information, identification information and coordinate information of each electronic component.

[0083] The three-dimensional model building unit is used to build a three-dimensional model of each electronic component based on feature information using three-dimensional reconstruction technology.

[0084] In an exemplary embodiment, the relative position confirmation module 308 includes:

[0085] The relative position determination unit is used to calculate the relative position of each electronic component on the circuit board according to the target reference point in the plane projection image; the target reference point includes the panel reference point, the unit reference point and the local reference point.

[0086] In an exemplary embodiment, the relative position confirmation module 308 further includes:

[0087] The calibration unit is used to calibrate the relative positions of the electronic components on the circuit board using the coordinate parameters of the calibration plate.

[0088] In an exemplary embodiment, the above-mentioned device for inversely determining the electrical connection relationship of the electric energy meter further includes:

[0089] The preprocessing module is used to perform denoising and clarity enhancement on multi-angle images.

[0090] Each module in the above-mentioned electric energy meter electrical connection relationship inversion device can be implemented in whole or in part by software, hardware and their combination. Each of the above-mentioned modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory of the computer device in the form of software, so that the processor can call and execute the corresponding operations of each of the above modules.

[0091] In an exemplary embodiment, a computer device is provided, which may be an industrial computer, and its internal structure diagram may be shown in FIG4. The computer device includes a processor, a memory, an input / output interface, a communication interface, a display unit, and an input device. The processor, the memory, and the input / output interface are connected via a system bus, and the communication interface, the display unit, and the input device are connected to the system bus via the input / output interface. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The input / output interface of the computer device is used to exchange information between the processor and an external device. The communication interface of the computer device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner may be implemented through WIFI, a mobile cellular network, near field communication (NFC) or other technologies. When the computer program is executed by the processor, a method for inversely determining the electrical connection relationship of an electric energy meter is implemented. The display unit of the computer device is used to form a visually visible picture, which may be a display screen, a projection device, or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer device can be a touch layer covering the display screen, or a button, trackball or touchpad set on the computer device shell, or an external keyboard, touchpad or mouse.

[0092] Those skilled in the art will understand that the structure shown in FIG. 4 is merely a block diagram of a partial structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than shown in the figure, or combine certain components, or have a different arrangement of components.

[0093] In an exemplary embodiment, a computer device is provided, including a memory and a processor, wherein a computer program is stored in the memory, and the processor implements the steps in the above-mentioned method embodiments when executing the computer program.

[0094] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps in the above-mentioned method embodiments are implemented.

[0095] In one embodiment, a computer program product is provided, including a computer program, which implements the steps in the above method embodiments when executed by a processor.

[0096] A person of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment method can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, an artificial intelligence (AI) processor, etc., but are not limited to this.

[0097] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, 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 application.

[0098] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A method for inversely determining the electrical connection relationship of an electric energy meter, characterized in that: The method comprises: Acquire a multi-angle image of a circuit board of the electric energy meter to be identified, wherein the multi-angle image includes a plane projection image taken perpendicular to the plane where the circuit board is located; Based on the multi-angle images, construct a three-dimensional model of each electronic component using three-dimensional reconstruction technology; Comparing the three-dimensional model of each electronic component with a preset electronic component model to determine the type of each electronic component; Determining relative positions of the electronic components on the circuit board based on the planar projection image; The electrical connection relationship of the circuit board of the electric energy meter to be identified is determined according to the types of the electronic components and the relative positions of the electronic components on the circuit board.

2. The method for inversely determining the electrical connection relationship of an electric energy meter according to claim 1, characterized in that: The method of constructing a three-dimensional model of each electronic component based on the multi-angle image using a three-dimensional reconstruction technology includes: Extracting feature information from the multi-angle images based on an image processing algorithm; the feature information includes color information, shape information, size information, identification information and coordinate information of each electronic component; Based on the feature information, a three-dimensional model of each electronic component is constructed using three-dimensional reconstruction technology.

3. The method for inversely determining the electrical connection relationship of an electric energy meter according to claim 1, characterized in that: The determining the relative positions of the electronic components on the circuit board based on the planar projection image includes: The relative positions of the electronic components on the circuit board are calculated according to the target reference points in the planar projection image; the target reference points include panel reference points, unit reference points and local reference points.

4. The method for inversely determining the electrical connection relationship of an electric energy meter according to claim 3, characterized in that: The determining the relative positions of the electronic components on the circuit board based on the planar projection image further includes: The relative positions of the electronic components on the circuit board are calibrated using the coordinate parameters of the calibration plate.

5. The method for inversely determining the electrical connection relationship of an electric energy meter according to claim 1, characterized in that: Before the step of constructing the three-dimensional model of each electronic component based on the multi-angle image using the three-dimensional reconstruction technology, the method further includes: The multi-angle images are subjected to denoising and definition enhancement processing.

6. A device for inversely determining the electrical connection relationship of an electric energy meter, characterized in that: The device comprises: An image acquisition module, used to acquire multi-angle images of a circuit board of the electric energy meter to be identified, wherein the multi-angle images include a plane projection image taken perpendicular to the plane where the circuit board is located; A three-dimensional model building module, used to build a three-dimensional model of each electronic component based on the multi-angle image using a three-dimensional reconstruction technology; An electronic component type confirmation module, used for comparing the three-dimensional model of each electronic component with a preset electronic component model to determine the type of each electronic component; A relative position confirmation module, used to determine the relative positions of the electronic components on the circuit board based on the planar projection image; The electrical connection relationship confirmation module is used to determine the electrical connection relationship of the circuit board of the electric energy meter to be identified according to the types of the electronic components and the relative positions of the electronic components on the circuit board.

7. A computer device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 5 are implemented.

8. A reverse retrieval device for electrical connection relationship of electric energy meter, characterized in that: include: A circuit board placement platform, used for placing the circuit board of the electric energy meter to be identified; A camera, used to collect multi-angle images of the circuit board of the electric energy meter to be identified; The computer device of claim 7, wherein the computer device is connected to the camera.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 5 are implemented.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 5 are implemented.

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