A Wireless Control System for an Impulse Voltage Generator Based on Intelligent Sensing Elements

Abstract

This invention discloses a wireless control system for an impulse voltage generator based on intelligent sensing elements, belonging to the technical field of impulse voltage generators. It includes a test parameter acquisition module, a coaxiality detection module, a coaxiality adjustment module, a ball gap distance detection module, and a ball gap distance adjustment module. This invention can accurately detect the coaxiality and gap distance of the two ball electrodes in a ball gap switch, acquiring coaxiality characteristic parameters and gap distance characteristic parameters. Then, based on these parameters, it can accurately adjust the coaxiality and gap distance, enabling more precise detection and adjustment of the ball gap switch's coaxiality and ball gap distance, thereby meeting testing requirements and ensuring the accuracy of subsequent insulation impulse withstand voltage test results for electrical equipment.

Description

Technical Field

[0001] This invention relates to the field of impulse voltage generator technology, and more specifically to a wireless control system for an impulse voltage generator based on intelligent sensing elements. Background Technology

[0002] An impulse voltage generator is a device used to generate high-voltage, short-pulse impulse voltages, primarily for insulation impulse withstand voltage tests on electrical equipment. Its working principle is based on the charging and discharging process of a capacitor, as detailed below:

[0003] Charging Process: An impulse voltage generator typically includes multiple capacitors, charging resistors, and a discharge switch. First, each capacitor is charged using a high-voltage power supply, usually a DC high-voltage power supply. During charging, current flows through the charging resistors, gradually increasing the voltage across the capacitors. The charging time is relatively long to ensure the capacitors reach the set voltage value. Discharging Process: Once the capacitors have reached the set voltage, the discharge switch is closed, allowing the capacitor bank to discharge through the discharge circuit. Due to the low resistance of the discharge circuit, the discharge process is very rapid, generating a high-voltage, short-pulse impulse voltage across the load. To obtain impulse voltages with different waveforms and parameters, other components, such as wavefront resistors and wave tail resistors, are added to the discharge circuit to adjust parameters such as the rise time and duration of the impulse voltage.

[0004] The discharge switch in an impulse voltage generator is typically a ball gap switch, a key component used to control the discharge process. A ball gap switch mainly consists of two metal ball electrodes with a gap between them. The electrodes are usually mounted on an insulating support to ensure insulation from the surrounding environment.

[0005] During insulation impulse withstand voltage tests, the coaxiality and gap distance of the ball gap switch have a crucial impact on the discharge process. Poor coaxiality of the ball gap switch leads to distortion of the electric field between the two spherical electrodes. This distortion results in a decrease in the breakdown voltage of the ball gap switch and increased dispersion, meaning that the voltage amplitude of each discharge may vary significantly, making it difficult to accurately control the discharge timing and impulse voltage waveform, thus affecting the accuracy and reliability of the test results. Conversely, an inadequate gap distance will also make it difficult to meet the test requirements for the voltage amplitude and frequency of each discharge. Therefore, a wireless control system for an impulse voltage generator based on intelligent sensing elements is proposed. Summary of the Invention

[0006] The technical problem to be solved by this invention is: how to more accurately detect and adjust the coaxiality and gap distance of the ball gap switch to meet the test requirements, and provides a wireless control system for an impulse voltage generator based on intelligent sensing elements.

[0007] The present invention solves the above-mentioned technical problems through the following technical solutions: the present invention includes a test parameter acquisition module, a coaxiality detection module, a coaxiality adjustment module, a ball gap distance detection module, and a ball gap distance adjustment module;

[0008] The test parameter acquisition module is used to obtain the required test voltage range and test voltage frequency range of the current electrical equipment from the test design document.

[0009] The coaxiality detection module is used to detect the coaxiality of the two ball electrodes in the ball gap switch and obtain coaxiality characteristic parameters.

[0010] The coaxiality adjustment module is used to adjust the relative position of the two ball electrodes in the vertical direction according to the coaxiality characteristic parameters;

[0011] The ball gap distance detection module is used to detect the gap distance between the two ball electrodes in the ball gap switch after the coaxiality adjustment is completed, and to obtain the gap distance characteristic parameters.

[0012] The ball gap distance adjustment module is used to adjust the gap distance between the two ball electrodes according to the test voltage range, test voltage frequency range and gap distance characteristic parameters required by the current electrical equipment.

[0013] Furthermore, the coaxiality detection module includes a first image acquisition unit, a first image recognition unit, and a coaxiality feature parameter calculation unit. The first image acquisition unit is used to capture images of the two ball electrodes in the ball gap switch from the front of the ball gap switch housing using an industrial camera, acquire the first ball electrode image, and preprocess the first ball electrode image. The first image recognition unit is used to recognize the preprocessed first ball electrode image using a trained target detection model, and acquire the position information of the two ball electrode detection boxes in the image. The coaxiality feature parameter calculation unit is used to calculate and acquire the coaxiality feature parameters based on the position information of the two ball electrode detection boxes in the image.

[0014] Furthermore, the specific processing procedure in the coaxiality characteristic parameter calculation unit is as follows:

[0015] Step S11: Obtain the position information of the two ball electrode detection boxes in the first ball electrode image. This position information is the coordinates of the upper left corner and lower right corner of the two ball electrode detection boxes in the first ball electrode image.

[0016] Step S12: Based on the coordinates of the upper left and lower right corners of the two ball electrode detection frames in the first ball electrode image, calculate and obtain the coordinates of the center points of the two ball electrode detection frames. The center points of the two ball electrode detection frames are denoted as Q1 and Q2.

[0017] Step S13: Read the y-axis coordinates of the center points Q1 and Q2 of the two ball electrode detection frames in the image coordinate system, and calculate the difference in y-axis coordinates between the center points Q1 and Q2 of the two ball electrode detection frames, denoted as y. QC In the image coordinate system of the first ball electrode image, the y-axis is set along the vertical direction;

[0018] Step S14: Based on the pre-defined transformation relationship between the image coordinate system and the world coordinate system of the first calibrated ball electrode image, adjust the coordinate difference y. QC Perform the transformation to obtain the coordinate difference transformation value W in the world coordinate system. y This yields the coaxiality characteristic parameters.

[0019] Furthermore, the coaxiality adjustment module includes a first adjustment parameter receiving unit and a height adjustment unit; the first adjustment parameter receiving unit is used to receive the coaxiality characteristic parameter calculated by the coaxiality characteristic parameter calculation unit, i.e., the coordinate difference transformation value W. y The height difference between the two spherical electrodes is considered as the current height difference. The first adjustment parameter receiving unit and the coaxiality characteristic parameter calculation unit are connected wirelessly. The height adjustment unit is used to convert the coordinate difference value W. y The height adjustment unit lowers or raises one side of the ball electrode by means of the height adjustment component, so that the coaxiality characteristic parameter value is zero after the adjustment is completed. The height adjustment unit and the first adjustment motor in the height adjustment component are connected by wireless communication.

[0020] Furthermore, the ball gap switch includes an electrode frame, two ball electrodes, and a housing. The electrode frame and the two ball electrodes are both located inside the housing. The electrode frame includes a base, two hollow vertical rods, and two connecting horizontal rods. One hollow vertical rod is located at one end of the base and is slidably connected to it, while the other hollow vertical rod is located at the other end of the base and is fixedly connected to it. The two ball electrodes are respectively located at one end of the two connecting horizontal rods.

[0021] The height adjustment assembly includes a first adjusting screw, a first adjusting nut seat, and a first adjusting motor. The first adjusting screw is disposed inside the hollow vertical rod. The first adjusting nut seat is fixedly connected to the other end of the connecting horizontal rod. The first adjusting motor is fixedly installed at the top of the hollow vertical rod. The first adjusting screw is threadedly connected to the first adjusting nut seat and connected to the output end of the first adjusting motor. Driven by the first adjusting motor, the connecting horizontal rod moves up and down, thereby adjusting the height of the corresponding ball electrode. The axes of the hollow vertical rod and the connecting horizontal rod are located in the same vertical plane.

[0022] Furthermore, the ball gap distance detection module includes a second image acquisition unit, a second image recognition unit, and a gap distance feature parameter calculation unit. The second image acquisition unit is used to capture images of the two ball electrodes in the ball gap switch from the front of the ball gap switch housing using the industrial camera, acquire images of the second ball electrodes, and preprocess the images. The second image recognition unit is used to recognize the preprocessed images of the second ball electrodes using the target detection model, and acquire the position information of the two ball electrode detection frames in the image. The gap distance feature parameter calculation unit is used to calculate and acquire gap distance feature parameters based on the position information of the two ball electrode detection frames in the image.

[0023] Furthermore, the specific processing procedure in the gap distance characteristic parameter calculation unit is as follows:

[0024] Step S21: Obtain the position information of the two ball electrode detection boxes in the second ball electrode image. This position information is the coordinates of the upper left corner and lower right corner of the two ball electrode detection boxes in the second ball electrode image.

[0025] Step S22: Use the contour detection function in OpenCV to perform contour detection processing on the inner region of the two ball electrode detection boxes in the second ball electrode image, and obtain the coordinates of each point on the outer contour line of the two ball electrodes in the image in the inner region of the ball electrode detection box.

[0026] Step S23: Calculate the distance between each point on the outer contour line of one spherical electrode and each point on the outer contour line of the other spherical electrode. Select the two points with the smallest distance as feature points. These two points are located on the outer contour lines of the two spherical electrodes respectively. The distance between these two points is denoted as the minimum distance difference d. min ;

[0027] Step S24: Based on the pre-defined transformation relationship between the image coordinate system and the world coordinate system of the second spherical electrode image, calculate the minimum distance difference d. min Perform the transformation to obtain the distance transformation value D in the world coordinate system. t This yields the gap distance characteristic parameters.

[0028] Furthermore, the ball gap distance adjustment module includes a second adjustment parameter receiving unit and a gap adjustment unit; the second adjustment parameter receiving unit is used to receive the gap distance characteristic parameter, i.e., the distance conversion value D, calculated by the gap distance characteristic parameter calculation unit. t The distance is considered as the current gap between the two ball electrodes. The second adjustment parameter receiving unit and the gap distance characteristic parameter calculation unit are connected wirelessly. The gap adjustment unit is used to adjust the distance based on the required test voltage range, test voltage frequency range, and distance conversion value D of the current electrical equipment. t The ball electrode on one side is moved horizontally by the gap adjustment component so that the gap distance between the two ball electrodes after adjustment is the corresponding gap setting value; the gap adjustment unit and the second adjustment motor in the gap adjustment component are connected by wireless communication.

[0029] Furthermore, the gap adjustment assembly includes a second adjustment motor, a second adjustment screw, and a second adjustment nut seat. The second adjustment motor is fixedly installed at one end of the base, the second adjustment screw is embedded in the base, and the second adjustment nut seat is fixedly connected to the lower end of the hollow vertical rod on one side and threadedly connected to the second adjustment screw. Driven by the second adjustment motor, the hollow vertical rod on one side slides horizontally along the surface of the base, thereby adjusting the gap distance between the ball electrodes.

[0030] Furthermore, the specific processing procedure in the gap adjustment unit is as follows:

[0031] Step S31: Based on the required test voltage range and test voltage frequency range of the current electrical equipment, compare and search in the gap setting value database to obtain the gap setting value corresponding to the current test voltage range and test voltage frequency range; the gap setting value database stores the correspondence between the gap setting value and the test voltage range and test voltage frequency range;

[0032] Step S32: Calculate the distance conversion value D t The difference between the set gap value and the set gap value is used to obtain the horizontal movement distance Js. The ball electrode on one side is moved horizontally by the gap adjustment component, and the movement distance is Js, so that the gap distance between the two ball electrodes after adjustment is the corresponding set gap value.

[0033] Compared with the prior art, the present invention has the following advantages: the wireless control system for the impulse voltage generator based on intelligent sensing elements can accurately detect the coaxiality and gap distance of the two ball electrodes in the ball gap switch, obtain the coaxiality characteristic parameters and gap distance characteristic parameters, and then accurately adjust the coaxiality and gap distance based on the above-mentioned coaxiality characteristic parameters and gap distance characteristic parameters. It can more accurately detect and adjust the coaxiality and ball gap distance of the ball gap switch, thereby meeting the test requirements and ensuring the accuracy of the insulation impulse withstand voltage test results of subsequent electrical equipment. Attached Figure Description

[0034] Figure 1 This is a schematic block diagram of the structure of the wireless control system for the impulse voltage generator based on intelligent sensing elements in an embodiment of the present invention;

[0035] Figure 2 This is a simplified structural diagram (front view) of the motor frame in an embodiment of the present invention.

[0036] In the diagram: 1. Base; 11. Second adjusting motor; 2. Hollow vertical rod; 21. First adjusting motor; 3. Connecting horizontal rod; 4. Ball electrode. Detailed Implementation

[0037] The embodiments of the present invention are described in detail below. These embodiments are implemented based on the technical solution of the present invention, and provide detailed implementation methods and specific operation processes. However, the scope of protection of the present invention is not limited to the following embodiments.

[0038] like Figure 1 As shown, this embodiment provides a technical solution: a wireless control system for an impulse voltage generator based on intelligent sensing elements, used to more accurately detect and adjust the coaxiality and ball gap distance of the ball gap switch, thereby meeting the test requirements, including a test parameter acquisition module, a coaxiality detection module, a coaxiality adjustment module, a ball gap distance detection module, and a ball gap distance adjustment module.

[0039] The following provides a further explanation of the specific working process or structure of each of the above modules.

[0040] 1. Experimental Parameter Acquisition Module

[0041] In this embodiment, the test parameter acquisition module is used to obtain the required test voltage range and test voltage frequency range of the current electrical equipment from the test design document.

[0042] More specifically, the test design document is designed based on the test requirements of the current electrical equipment. The test requirements of different electrical equipment are different. The test requirements here mainly refer to the range of test voltage values ​​and the range of test voltage frequencies required by the electrical equipment.

[0043] 2. Coaxiality Detection Module

[0044] In this embodiment, the coaxiality detection module is used to detect the coaxiality of the two ball electrodes in the ball gap switch and obtain coaxiality characteristic parameters.

[0045] More specifically, the coaxiality detection module includes a first image acquisition unit, a first image recognition unit, and a coaxiality feature parameter calculation unit. The first image acquisition unit is used to take a picture of the two ball electrodes in the ball gap switch from the front of the ball gap switch housing using an industrial camera, acquire the first ball electrode image, and preprocess the first ball electrode image. The first image recognition unit is used to recognize the preprocessed first ball electrode image using a trained target detection model, and acquire the position information of the two ball electrode detection boxes in the image. The coaxiality feature parameter calculation unit is used to calculate and acquire the coaxiality feature parameters based on the position information of the two ball electrode detection boxes in the image.

[0046] More specifically, the optical axis of the industrial camera is set horizontally, and the electrode holder of the ball gap switch is set vertically. The optical axis of the industrial camera is perpendicular to the plane containing the axis of the electrode holder of the ball gap switch, which makes the subsequent detection results more accurate.

[0047] More specifically, the object detection model is obtained by training the SSD object detection network.

[0048] More specifically, the preprocessing includes noise reduction and image enhancement. Noise reduction methods include, but are not limited to, Gaussian filtering and mean filtering. Image enhancement is achieved using histogram equalization. After noise reduction and image enhancement, the image quality can be improved, thereby making the subsequent detection results more accurate.

[0049] More specifically, the first image recognition unit and the coaxiality feature parameter calculation unit are integrated into the industrial camera.

[0050] More specifically, the processing procedure in the coaxiality characteristic parameter calculation unit is as follows:

[0051] Step 1: Obtain the position information of the two ball electrode detection boxes in the first ball electrode image. This position information is the coordinates of the upper left and lower right corners of the two ball electrode detection boxes in the first ball electrode image.

[0052] Step 2: Based on the coordinates of the upper left and lower right corners of the two ball electrode detection frames in the first ball electrode image, calculate the coordinates of the center points of the two ball electrode detection frames. The center points of the two ball electrode detection frames are denoted as Q1 and Q2.

[0053] Step 3: Read the y-axis coordinates of the center points Q1 and Q2 of the two ball electrode detection frames in the image coordinate system, and calculate the difference in y-axis coordinates between the center points Q1 and Q2 of the two ball electrode detection frames, denoted as y. QC In the image coordinate system of the first ball electrode image, the y-axis is set along the vertical direction;

[0054] Step 4: Based on the pre-defined transformation relationship between the image coordinate system and the world coordinate system of the first calibrated ball electrode image, adjust the coordinate difference y. QC Perform the transformation to obtain the coordinate difference transformation value W in the world coordinate system. y This yields the coaxiality characteristic parameters.

[0055] 3. Coaxiality adjustment module

[0056] In this embodiment, the coaxiality adjustment module is used to adjust the relative position of the two ball electrodes in the vertical direction according to the coaxiality characteristic parameter. After the adjustment is completed, the value of the coaxiality characteristic parameter is zero.

[0057] More specifically, the coaxiality adjustment module includes a first adjustment parameter receiving unit and a height adjustment unit; the first adjustment parameter receiving unit is used to receive the coaxiality characteristic parameter calculated by the coaxiality characteristic parameter calculation unit, i.e., the coordinate difference transformation value W. y The height difference between the two spherical electrodes is considered as the current height difference; the first adjustment parameter receiving unit and the coaxiality characteristic parameter calculation unit are connected wirelessly; the height adjustment unit is used to convert the coordinate difference value W. y The height adjustment unit lowers or raises one side of the ball electrode by means of the height adjustment component, so that the coaxiality characteristic parameter value is zero after the adjustment is completed. The height adjustment unit and the first adjustment motor in the height adjustment component are connected by wireless communication. The wireless communication method includes, but is not limited to, Bluetooth wireless communication, wireless local area network communication, etc.

[0058] like Figure 2 As shown, the ball gap switch in this embodiment includes an electrode frame, two ball electrodes 4, and a housing (made of transparent material). Figure 2(Not shown in the image) The electrode frame and two ball electrodes 4 are located inside the housing. The electrode frame includes a base 1, two hollow vertical rods 2, and two connecting horizontal rods 3. One hollow vertical rod 2 is located at one end of the base 1 and is slidably connected to it, while the other hollow vertical rod 2 is located at the other end of the base 1 and is fixedly connected to it. The two ball electrodes 4 are respectively located at one end of the two connecting horizontal rods 3. The height adjustment assembly includes a first adjusting screw, a first adjusting nut seat, and a first adjusting motor 21. The first adjusting screw is located inside the hollow vertical rod 2, and the first adjusting nut seat is fixedly connected to the other end of the connecting horizontal rod 3. The first adjusting motor 21 is fixedly installed at the top of the hollow vertical rod 2. The first adjusting screw is threadedly connected to the first adjusting nut seat and connected to the output end of the first adjusting motor 21. Driven by the first adjusting motor 21, the connecting horizontal rods 3 can be moved up and down, thereby adjusting the height of the corresponding ball electrodes 4. The axes of the hollow vertical rods 2 and the connecting horizontal rods 3 are located in the same vertical plane.

[0059] It should be noted that, since the axes of the hollow vertical rod 2 and the connecting horizontal rod 3 are located in the same vertical plane, the coaxiality between the two ball electrodes is mainly determined by the relative position difference in the vertical direction.

[0060] 4. Ball gap distance detection module

[0061] In this embodiment, the ball gap distance detection module is used to detect the gap distance between the two ball electrodes in the ball gap switch after the coaxiality adjustment is completed, and to obtain the gap distance characteristic parameters.

[0062] More specifically, the ball gap distance detection module includes a second image acquisition unit, a second image recognition unit, and a gap distance feature parameter calculation unit. The second image acquisition unit is used to capture images of the two ball electrodes in the ball gap switch from the front of the ball gap switch housing using the industrial camera, acquire images of the second ball electrodes, and preprocess the images. The second image recognition unit is used to recognize the preprocessed images of the second ball electrodes using the target detection model, and acquire the position information of the two ball electrode detection frames in the image. The gap distance feature parameter calculation unit is used to calculate and acquire gap distance feature parameters based on the position information of the two ball electrode detection frames in the image.

[0063] For more specific details regarding the second image acquisition unit and the second image recognition unit, please refer to the relevant descriptions of the first image acquisition unit and the first image recognition unit above. It should be noted that the shooting position of the industrial camera in the second image acquisition unit is different from that in the first image acquisition unit, but the shooting angle is the same.

[0064] More specifically, the second image recognition unit and the gap distance feature parameter calculation unit are built into the industrial camera, which serves as the intelligent sensing element in this invention and has the capabilities of shooting, target recognition, and post-processing.

[0065] More specifically, the specific processing procedure in the gap distance characteristic parameter calculation unit is as follows:

[0066] Step 1: Obtain the position information of the two ball electrode detection boxes in the second ball electrode image. This position information is the coordinates of the upper left and lower right corners of the two ball electrode detection boxes in the second ball electrode image.

[0067] Step 2: Use the contour detection function in OpenCV to perform contour detection processing on the inner region of the two ball electrode detection boxes in the second ball electrode image, and obtain the coordinates of each point on the outer contour line of the two ball electrodes in the image.

[0068] Step 3: Calculate the distances between points on the outer contour of one spherical electrode and points on the outer contour of the other spherical electrode. Select the two points with the smallest distance as feature points. These two points are located on the outer contours of the two spherical electrodes respectively. The distance between the two points is denoted as the minimum distance difference d. min ;

[0069] Step 4: Based on the pre-defined transformation relationship between the image coordinate system and the world coordinate system of the second spherical electrode image, calculate the minimum distance difference d. min Perform the transformation to obtain the distance transformation value D in the world coordinate system. t This yields the gap distance characteristic parameters.

[0070] 5. Ball gap distance adjustment module

[0071] In this embodiment, the ball gap distance adjustment module is used to adjust the gap distance between the two ball electrodes according to the test voltage range, test voltage frequency range and gap distance characteristic parameters required by the current electrical equipment, so that the adjusted gap distance meets the requirements.

[0072] More specifically, the ball gap distance adjustment module includes a second adjustment parameter receiving unit and a gap adjustment unit; the second adjustment parameter receiving unit is used to receive the gap distance characteristic parameter, i.e., the distance conversion value D, calculated by the gap distance characteristic parameter calculation unit. t The distance is considered as the current gap between the two ball electrodes. The second adjustment parameter receiving unit and the gap distance characteristic parameter calculation unit are connected wirelessly. The gap adjustment unit is used to adjust the distance based on the required test voltage range, test voltage frequency range, and distance conversion value D of the current electrical equipment. tThe ball electrode on one side is moved horizontally by the gap adjustment component so that the gap distance between the two ball electrodes after adjustment is the corresponding gap setting value; the gap adjustment unit and the second adjustment motor in the gap adjustment component are connected by wireless communication; the wireless communication method includes, but is not limited to, Bluetooth wireless communication, wireless local area network communication, etc.

[0073] Similarly, Figure 2 As shown, the gap adjustment assembly includes a second adjusting motor 11, a second adjusting screw, and a second adjusting nut seat. The second adjusting motor 11 is fixedly installed at one end of the base 1. The second adjusting screw is embedded in the base 1. The second adjusting nut seat is fixedly connected to the lower end of the hollow vertical rod 2 on one side and threadedly connected to the second adjusting screw. Driven by the second adjusting motor 11, it can drive one side ( Figure 2 The hollow vertical rod 2 (on the left side) slides horizontally along the surface of the base 1, thereby adjusting the gap distance between the ball electrodes.

[0074] More specifically, the specific processing procedure in the gap adjustment unit is as follows:

[0075] Step 1: Based on the required test voltage range and test voltage frequency range of the current electrical equipment, compare and search in the gap setting value database to obtain the gap setting value corresponding to the current test voltage range and test voltage frequency range; the gap setting value database stores the correspondence between the gap setting value and the test voltage range and test voltage frequency range;

[0076] Step 2: Calculate the distance conversion value D t The difference between the set gap value and the set gap value is used to obtain the horizontal movement distance Js. The ball electrode on one side is moved horizontally by the gap adjustment component, and the movement distance is Js, so that the gap distance between the two ball electrodes after adjustment is the corresponding set gap value.

[0077] In summary, the wireless control system for the impulse voltage generator based on intelligent sensing elements in the above embodiments can accurately detect the coaxiality and gap distance of the two ball electrodes in the ball gap switch, obtain coaxiality characteristic parameters and gap distance characteristic parameters, and then accurately adjust the coaxiality and gap distance based on the above coaxiality characteristic parameters. This allows for more accurate detection and adjustment of the coaxiality and gap distance of the ball gap switch, thereby meeting the test requirements and ensuring the accuracy of the insulation impulse withstand voltage test results of subsequent electrical equipment.

[0078] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0079] In the description of this specification, the 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 the present invention. 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 any suitable manner in 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.

[0080] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A wireless control system for an impulse voltage generator based on intelligent sensing elements, characterized in that, It includes a test parameter acquisition module, a coaxiality detection module, a coaxiality adjustment module, a ball gap distance detection module, and a ball gap distance adjustment module; The test parameter acquisition module is used to obtain the required test voltage range and test voltage frequency range of the current electrical equipment from the test design document. The coaxiality detection module is used to detect the coaxiality of the two ball electrodes in the ball gap switch and obtain coaxiality characteristic parameters. The coaxiality adjustment module is used to adjust the relative position of the two ball electrodes in the vertical direction according to the coaxiality characteristic parameters; The ball gap distance detection module is used to detect the gap distance between the two ball electrodes in the ball gap switch after the coaxiality adjustment is completed, and to obtain the gap distance characteristic parameters. The ball gap distance adjustment module is used to adjust the gap distance between the two ball electrodes according to the test voltage range, test voltage frequency range and gap distance characteristic parameters required by the current electrical equipment. The coaxiality detection module includes a first image acquisition unit, a first image recognition unit, and a coaxiality feature parameter calculation unit. The first image acquisition unit is used to capture images of the two ball electrodes in the ball gap switch from the front of the ball gap switch housing using an industrial camera, acquire the first ball electrode image, and preprocess the first ball electrode image. The first image recognition unit is used to recognize the preprocessed first ball electrode image using a trained target detection model, and acquire the position information of the two ball electrode detection boxes in the image. The coaxiality feature parameter calculation unit is used to calculate and acquire the coaxiality feature parameters based on the position information of the two ball electrode detection boxes in the image. The specific processing procedure in the coaxiality characteristic parameter calculation unit is as follows: Step S11: Obtain the position information of the two ball electrode detection boxes in the first ball electrode image. This position information is the coordinates of the upper left corner and lower right corner of the two ball electrode detection boxes in the first ball electrode image. Step S12: Based on the coordinates of the upper left and lower right corners of the two ball electrode detection frames in the first ball electrode image, calculate and obtain the coordinates of the center points of the two ball electrode detection frames. The center points of the two ball electrode detection frames are denoted as Q1 and Q2. Step S13: Read the y-axis coordinates of the center points Q1 and Q2 of the two ball electrode detection frames in the image coordinate system, and calculate the difference in y-axis coordinates between the center points Q1 and Q2 of the two ball electrode detection frames, denoted as y. QC In the image coordinate system of the first ball electrode image, the y-axis is set along the vertical direction; Step S14: Based on the pre-defined transformation relationship between the image coordinate system and the world coordinate system of the first calibrated ball electrode image, adjust the coordinate difference y. QC Perform the transformation to obtain the coordinate difference transformation value W in the world coordinate system. y This yields the coaxiality characteristic parameters.

2. The wireless control system for an impulse voltage generator based on intelligent sensing elements according to claim 1, characterized in that: The coaxiality adjustment module includes a first adjustment parameter receiving unit and a height adjustment unit; the first adjustment parameter receiving unit is used to receive the coaxiality characteristic parameter calculated by the coaxiality characteristic parameter calculation unit, namely the coordinate difference transformation value W. y The height difference between the two spherical electrodes is considered as the current height difference. The first adjustment parameter receiving unit and the coaxiality characteristic parameter calculation unit are connected wirelessly. The height adjustment unit is used to convert the coordinate difference value W. y The height adjustment unit lowers or raises one side of the ball electrode by means of the height adjustment component, so that the coaxiality characteristic parameter value is zero after the adjustment is completed. The height adjustment unit and the first adjustment motor in the height adjustment component are connected by wireless communication.

3. The wireless control system for an impulse voltage generator based on intelligent sensing elements according to claim 2, characterized in that: The ball gap switch includes an electrode frame, two ball electrodes, and a housing. The electrode frame and the two ball electrodes are located inside the housing. The electrode frame includes a base, two hollow vertical rods, and two connecting horizontal rods. One hollow vertical rod is located at one end of the base and is slidably connected to it, and the other hollow vertical rod is located at the other end of the base and is fixedly connected to it. The two ball electrodes are respectively located at one end of the two connecting horizontal rods. The height adjustment assembly includes a first adjusting screw, a first adjusting nut seat, and a first adjusting motor. The first adjusting screw is disposed inside the hollow vertical rod. The first adjusting nut seat is fixedly connected to the other end of the connecting horizontal rod. The first adjusting motor is fixedly installed at the top of the hollow vertical rod. The first adjusting screw is threadedly connected to the first adjusting nut seat and connected to the output end of the first adjusting motor. Driven by the first adjusting motor, the connecting horizontal rod moves up and down, thereby adjusting the height of the corresponding ball electrode. The axes of the hollow vertical rod and the connecting horizontal rod are located in the same vertical plane.

4. A wireless control system for an impulse voltage generator based on intelligent sensing elements according to claim 3, characterized in that: The ball gap distance detection module includes a second image acquisition unit, a second image recognition unit, and a gap distance feature parameter calculation unit. The second image acquisition unit is used to capture images of the two ball electrodes in the ball gap switch from the front of the ball gap switch housing using the industrial camera, acquire images of the second ball electrodes, and preprocess the images. The second image recognition unit is used to recognize the preprocessed images of the second ball electrodes using the target detection model, and acquire the position information of the two ball electrode detection frames in the image. The gap distance feature parameter calculation unit is used to calculate and acquire gap distance feature parameters based on the position information of the two ball electrode detection frames in the image.

5. A wireless control system for an impulse voltage generator based on intelligent sensing elements according to claim 4, characterized in that: The specific processing procedure in the gap distance characteristic parameter calculation unit is as follows: Step S21: Obtain the position information of the two ball electrode detection boxes in the second ball electrode image. This position information is the coordinates of the upper left corner and lower right corner of the two ball electrode detection boxes in the second ball electrode image. Step S22: Use the contour detection function in OpenCV to perform contour detection processing on the inner region of the two ball electrode detection boxes in the second ball electrode image, and obtain the coordinates of each point on the outer contour line of the two ball electrodes in the image in the inner region of the ball electrode detection box. Step S23: Calculate the distance between each point on the outer contour line of one spherical electrode and each point on the outer contour line of the other spherical electrode. Select the two points with the smallest distance as feature points. These two points are located on the outer contour lines of the two spherical electrodes respectively. The distance between these two points is denoted as the minimum distance difference d. min ; Step S24: Based on the pre-defined transformation relationship between the image coordinate system and the world coordinate system of the second spherical electrode image, calculate the minimum distance difference d. min Perform the transformation to obtain the distance transformation value D in the world coordinate system. t This yields the gap distance characteristic parameters.

6. A wireless control system for an impulse voltage generator based on intelligent sensing elements according to claim 5, characterized in that: The ball gap distance adjustment module includes a second adjustment parameter receiving unit and a gap adjustment unit; the second adjustment parameter receiving unit is used to receive the gap distance characteristic parameter, i.e., the distance conversion value D, calculated by the gap distance characteristic parameter calculation unit. t The distance is considered as the current gap between the two ball electrodes. The second adjustment parameter receiving unit and the gap distance characteristic parameter calculation unit are connected wirelessly. The gap adjustment unit is used to adjust the distance based on the required test voltage range, test voltage frequency range, and distance conversion value D of the current electrical equipment. t The ball electrode on one side is moved horizontally by the gap adjustment component so that the gap distance between the two ball electrodes after adjustment is the corresponding gap setting value; the gap adjustment unit and the second adjustment motor in the gap adjustment component are connected by wireless communication.

7. A wireless control system for an impulse voltage generator based on intelligent sensing elements according to claim 6, characterized in that: The gap adjustment assembly includes a second adjustment motor, a second adjustment screw, and a second adjustment nut seat. The second adjustment motor is fixedly installed at one end of the base, the second adjustment screw is embedded in the base, and the second adjustment nut seat is fixedly connected to the lower end of the hollow vertical rod on one side and threadedly connected to the second adjustment screw. Driven by the second adjustment motor, the hollow vertical rod on one side slides horizontally along the surface of the base, thereby adjusting the gap distance between the ball electrodes.

8. A wireless control system for an impulse voltage generator based on intelligent sensing elements according to claim 7, characterized in that: The specific processing procedure in the gap adjustment unit is as follows: Step S31: Based on the required test voltage range and test voltage frequency range of the current electrical equipment, compare and search in the gap setting value database to obtain the gap setting value corresponding to the current test voltage range and test voltage frequency range; the gap setting value database stores the correspondence between the gap setting value and the test voltage range and test voltage frequency range; Step S32: Calculate the distance conversion value D t The difference between the set gap value and the set gap value is used to obtain the horizontal movement distance Js. The ball electrode on one side is moved horizontally by the gap adjustment component, and the movement distance is Js, so that the gap distance between the two ball electrodes after adjustment is the corresponding set gap value.

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