Electromagnetic coil winding detection device and detection method thereof

Abstract

The invention discloses an electromagnetic coil winding detection device and a detection method thereof, belongs to the technical field of electromagnetic coil detection, and solves the problem that the segment width, segment spacing, segment height, total coil length and number of turns of an electromagnetic coil cannot be accurately detected only by means of image acquisition in the prior art. Comprising a flaring assembly capable of reciprocating in the horizontal direction, an arc rail located on one side of the flaring assembly and capable of reciprocating in the horizontal direction and the vertical direction, a data acquisition module connected to the arc rail in a sliding mode, an image acquisition module, a data processing module and a control module. The flaring assembly is rotatably arranged, and the rotating axis of the flaring assembly is located on the horizontal plane. The electromagnetic coil is fixed on the flaring assembly, the image acquisition module is matched to acquire the image, the coil type is identified, the control module adjusts the position distance, the number of turns of the coil is acquired, the image is filtered, and the coil size is calculated, so that the accuracy of characteristic judgment of the electromagnetic coil is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electromagnetic coil detection, and in particular to an electromagnetic coil winding detection device and a detection method thereof. Background Art

[0002] An electromagnetic coil is an electrical device that works on the principle of electromagnetism. It is usually made of wire wound into one or more solenoids. It can generate a magnetic field. When powered, the current in the coil generates a magnetic field that can be used to drive electromagnetic mechanisms or used as an electromagnet. Electromagnetic coils are widely used in various electrical and electronic devices, such as relays, solenoid valves, generators, transformers, and motors. Its performance parameters include inductance, resistance, number of turns, etc. These parameters determine the working characteristics and application range of the coil. The design and manufacture of electromagnetic coils require precise control of wire diameter, number of turns, coil shape and material to ensure its performance and reliability in specific applications.

[0003] It is very important to detect the size of the electromagnetic coil because it directly affects the electromagnetic performance and mechanical stability of the coil. Parameters such as segment width, segment spacing, segment height, total coil length and number of turns together determine the key characteristics of the coil, such as inductance, magnetic field strength and distribution, and heat dissipation performance. Accurate size detection can ensure the performance and reliability of the coil in a specific application, prevent electrical failures such as inter-turn short circuits or insulation breakdown, and help improve production efficiency and product quality. In addition, size detection is also crucial for electromagnetic compatibility (EMC) because it is related to the magnetic field distribution generated by the coil and the sensitivity to external electromagnetic interference.

[0004] In the prior art, in order to obtain the above-mentioned inspection data, an image collector is generally used to detect the outer surface of the coil. The image collector generally needs to move back and forth to collect images of the coil. However, this detection method is very dependent on the clarity of the image obtained by the image collector, and has extremely high requirements on the shooting pixels of the image collector itself. Usually, tools such as high-definition cameras are required for shooting. For manufacturers, this undoubtedly greatly increases the cost required for electromagnetic coil detection. In addition, when a high-definition graphic collector performs image acquisition, it is also required to complete the dimming action according to the ambient light conditions in advance, otherwise the collected image content will be affected by reflections and other problems. Therefore, considering these problems, the prior art cannot accurately detect the segment width, segment spacing, segment height, total length and number of turns of the electromagnetic coil by image acquisition alone, which leads to the inaccuracy of the key characteristics of the coil such as inductance, magnetic field strength and distribution, and heat dissipation performance calculated by these parameters.

[0005] Therefore, an electromagnetic coil winding detection device and a detection method thereof are proposed to solve or alleviate the above problems. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings of the prior art and to propose an electromagnetic coil winding detection device and a detection method thereof.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A detection device for winding an electromagnetic coil comprises a flaring component which can be reciprocated in a horizontal direction, an arc rail which is located on one side of the flaring component and can be reciprocated in a horizontal direction and a vertical direction, a data acquisition module, an image acquisition module, a data processing module, and a control module which are slidably connected to the arc rail, wherein the flaring component can be rotatably arranged and its rotation axis is located on a horizontal plane, the data acquisition module has a vertical downward state and a horizontal state on the arc rail, the data acquisition module respectively acquires the number of turns of a spiral coil and the number of turns of a ring coil in the vertical downward state or the horizontal state, the image acquisition module is used to acquire an end face picture and a peripheral picture of the electromagnetic coil and feed them back to the data processing module, the data processing module can be used to identify the type of the electromagnetic coil and output the result to the control module, and can be used to identify the size parameters of the electromagnetic coil, the control module can be used to adjust the state of the data acquisition module according to the output result of the data processing module, and can be used to control the orientation of the flaring component and the data acquisition module.

[0009] Preferably, it also includes a base and a bracket, the base is fixedly connected to a first transverse electric slide rail, the slide seat of the first transverse electric slide rail is fixedly connected to a reduction motor, the flaring assembly is fixedly connected to the output shaft of the reduction motor, the bracket is fixedly connected to a horizontally arranged second transverse electric slide rail, the second transverse electric slide rail has the same length direction as the first transverse electric slide rail, the slide seat of the second transverse electric slide rail is fixedly connected to a vertically arranged vertical electric slide rail, and the circular arc rail is fixedly connected to the slide seat of the vertical electric slide rail through a connecting bracket.

[0010] Preferably, the flaring assembly includes a double-threaded rod coaxially fixedly connected to the output shaft of the reduction motor, a limit plate fixedly connected to the end of the double-threaded rod away from the reduction motor, a threaded sleeve threadedly connected to two sections of external threads in the double-threaded rod, a hinged seat fixedly connected to the outer ring of the threaded sleeve, an articulated rod with its end rotatably connected to the articulated seat, and a rotating seat, the two sections of external threads on the double-threaded rod have opposite rotation directions, and the ends of the articulated rods on both sides away from the articulated seat are rotatably connected to the rotating seat.

[0011] Preferably, the image acquisition unit comprises a stand, a connecting seat mounted on the stand, and a camera detachably connected to the connecting seat.

[0012] Preferably, the arc angle of the circular arc rail is 90°, a slide groove with a T-shaped cross section and penetrating the two ends and the inner ring of the circular arc rail is provided in the circular arc rail, a T-shaped slide bracket is slidably connected in the circular arc rail, a guide wheel in contact with the inner side wall of the slide groove is rotatably connected to the slide bracket, a ball groove concave upward is provided at the center of the bottom surface of the guide wheel, a ball bearing that can contact the bottom surface of the slide groove is movably connected in the ball groove, both ends of the circular arc rail are fixedly connected with end plates by bolts, and a countersunk groove is provided on the side of the end plate facing the circular arc rail. The inner wall of the trough is provided with a through hole that passes through the end plate, and an end return spring that can contact the slide is fixedly connected in the trough, and a mounting seat is fixedly connected to the end plate located at the upper end of the circular arc rail, and a hole that communicates with the through hole and the outside is provided on the mounting seat, and a servo motor is fixedly connected to the mounting seat, and a take-up drum is fixedly connected to the output shaft of the servo motor, and a connecting rope that passes through the hole and is fixedly connected to the outer ring of the take-up drum is fixedly connected to the connecting rope that passes through the hole and is fixedly connected to the slide after the through hole, and the data acquisition module is fixedly connected to one end of the slide that passes through the slide groove.

[0013] Preferably, the data acquisition module includes a connecting tube fixedly connected to one end of the slide through the slide slot, a resistive displacement sensor fixedly connected to one end of the slide through the slide slot and located in the connecting tube, and a cone needle slidably connected in the connecting tube, a sliding through groove penetrating through the interior and arranged along the length direction of the connecting tube is opened on the outer peripheral wall of the connecting tube, a slider slidably connected in the sliding through groove is fixedly connected to the outer peripheral wall of the cone needle, and a vertical return spring is fixedly connected between the detection end of the resistive displacement sensor and the upper end of the cone needle.

[0014] Preferably, the control module includes a controller and a motor drive chip, the controller includes an STM32F103RCT6 embedded-microcontroller integrated circuit, and the motor drive chip includes a TB67S109AFTG motor drive chip.

[0015] Preferably, the data processing module can be used to identify the type of electromagnetic coil and output the result to the control module, including the following steps:

[0016] Import the end face picture and the periphery picture of the electromagnetic coil;

[0017] Grayscale and denoise the end face and periphery images of the electromagnetic coil;

[0018] The processed end face image and peripheral image of the electromagnetic coil are used to calculate the gradient and gradient amplitude of the image through the Canny edge detection algorithm, and the edge is determined by using non-maximum suppression and double threshold processing;

[0019] The strip-shaped parallel light spot is found by using the Hough transform formula in the end face image and the peripheral image after edge detection. The Hough transform formula is ρ=x·cosθ+y·sinθ, where θ is the angle of the straight line and ρ is the distance from the straight line to the origin.

[0020] If there is a strip of parallel light spot in the end face image but not in the peripheral image, the output result is a ring coil. If there is no strip of parallel light spot in the end face image but present in the peripheral image, the output result is a spiral coil. If there is a strip of parallel light spot in both the end face image and the peripheral image, the output result is a ring coil.

[0021] Preferably, the data processing module can be used to identify the size parameters of the electromagnetic coil, and further comprises the following steps:

[0022] Import the number of coil turns from the data acquisition module, and import the end face image or peripheral image from the image acquisition module;

[0023] De-noising the end face image or the peripheral image;

[0024] Use the findContours function in OpenCV to extract the contour area of ​​the denoised end face image or the peripheral image Among them, P i and P i+1 are two adjacent points on the contour, n is the number of points on the contour, and det is the determinant;

[0025] The contour area A contour Compare with the end face area or side face area of ​​the electromagnetic coil, and calculate the contour area A of the end face image or the peripheral image. contour When the area of ​​the end face or the side face of the electromagnetic coil is smaller than that of the electromagnetic coil, the contour in the end face image or the peripheral image is filtered out as a clear image;

[0026] The edge detection algorithm is used to extract each coil in the clear picture, and the pixel distance of each coil is converted to the actual length. Among them, W pixel To clearly define the segment width, segment spacing, and segment height in the image, W real is the actual segment width, segment spacing, and segment height, D is the shooting distance, and f is the focal length of the camera;

[0027] The total coil length is calculated using the number of coil turns, actual segment width, segment spacing, and segment height.

[0028] The present invention also provides a detection method for an electromagnetic coil winding detection device, which uses the electromagnetic coil winding detection device as described above to perform detection, comprising the following steps:

[0029] The electromagnetic coil is sleeved on the outside of the flaring component and fixed;

[0030] The image acquisition module acquires the peripheral image and the end face image of the electromagnetic coil and feeds them back to the data processing module;

[0031] The data processing module identifies the electromagnetic coil as a ring coil or a threaded coil according to the peripheral image and the end face image and outputs the result to the control module;

[0032] When the received output result is a ring coil, the control module controls the data acquisition module to be in a horizontal state and controls the detection end of the data acquisition module to contact the end surface of the ring coil, and makes the expansion component drive the electromagnetic coil to rotate, and outputs the number of coil turns through the number of beating times of the detection end of the data acquisition module;

[0033] When the output result is a spiral coil, the control module controls the data acquisition module to be in a vertical downward state and controls the detection end of the data acquisition module to contact the outer circumference end of the spiral coil, and makes the flaring component drive the electromagnetic coil to move in one direction, and outputs the number of coil turns through the number of beating times of the detection end of the data acquisition module;

[0034] The number of coil turns, the peripheral image and the end face image are transmitted to the data processing module, and the data processing module identifies and exports the size parameters of the electromagnetic coil.

[0035] The present invention has the following beneficial effects:

[0036] When the present invention is actually applied, the electromagnetic coil to be detected can be fixed on the flaring component, and the electromagnetic coil can cooperate with the image acquisition module to obtain the peripheral image and the end face image to enable the data processing module to identify whether the electromagnetic coil is a ring coil or a spiral coil, and after outputting the result, the control module can be controlled to control the position and distance between the data acquisition module and the electromagnetic coil, and at the same time control the data acquisition module to collect the number of coil turns of the electromagnetic coil, and then filter the peripheral image and the end face image to ensure that the object recognized by the data processing module is clearer, and then obtain the segment width, segment spacing, and segment height of a single coil in the electromagnetic coil, and then calculate the total length of the coil in combination with the number of coil turns obtained by actual detection, so that the final output data result is more accurate, so that the detection personnel can use this as a benchmark to make more accurate judgments on the key characteristics of the electromagnetic coil, such as inductance, magnetic field strength and distribution, and heat dissipation performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0038] Figure 1 It is a structural schematic diagram of the electromagnetic coil winding detection device in the present invention;

[0039] Figure 2 It is a cross-sectional view of the circular arc rail and the data acquisition module in the present invention;

[0040] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0041] Figure 4 for Figure 2 The enlarged view of point B in the middle;

[0042] Figure 5 It is a structural block diagram of the image acquisition module, data acquisition module, data processing module, and control module in the present invention.

[0043] In the figure: 1, base; 2, first horizontal electric slide rail; 3, reduction motor; 4, double threaded rod; 5, limit plate; 6, threaded sleeve; 7, hinged seat; 8, hinged rod; 9, rotating seat; 10, bracket; 11, second horizontal electric slide rail; 12, vertical electric slide rail; 13, connecting bracket; 14, arc rail; 15, mounting seat; 16, servo motor; 17, take-up reel; 18, stand; 19, camera; 20, cone needle; 21, connecting pipe; 22, sliding groove; 23, slider; 24, resistive displacement sensor; 25, vertical reset spring; 26, end plate; 27, through hole; 28, sink groove; 29, end reset spring; 30, slide groove; 31, slide; 32, guide wheel; 33, ball; 34, image acquisition module; 35, data acquisition module; 36, data processing module; 37, control module. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0045] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0047] In the description of the present invention, it should be understood that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of the invention is conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0048] Furthermore, the terms “first”, “second”, “third”, etc. are merely used for distinguishing descriptions and are not to be understood as indicating or implying relative importance.

[0049] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] An electromagnetic coil winding detection device, such as Figure 1 and Figure 5 As shown, it includes a base 1 and a bracket 10, a flaring component that can be moved back and forth in the horizontal direction, an arc rail 14 located on one side of the flaring component and can be moved back and forth in the horizontal and vertical directions, a data acquisition module 35 slidably connected to the arc rail 14, an image acquisition module 34, a data processing module 36, and a control module 37.

[0051] The flaring component can be rotatably arranged and its rotation axis is located in a horizontal plane. The data acquisition module 35 is in a vertical downward state and a horizontal state on the arc rail 14. Specifically, a first transverse electric slide rail 2 is fixedly connected to the base 1, and a reduction motor 3 is fixedly connected to the slide seat of the first transverse electric slide rail 2. The flaring component is fixedly connected to the output shaft of the reduction motor 3. A horizontally arranged second transverse electric slide rail 11 is fixedly connected to the bracket 10. The length direction of the second transverse electric slide rail 11 is the same as that of the first transverse electric slide rail 2. A vertically arranged vertical electric slide rail 12 is fixedly connected to the slide seat of the second transverse electric slide rail 11. The arc rail 14 is fixedly connected to the slide seat of the vertical electric slide rail 12 through a connecting bracket 13.

[0052] like Figure 1 As shown, the flaring assembly includes a double-threaded rod 4 coaxially fixedly connected to the output shaft of the reduction motor 3, a limit plate 5 fixedly connected to the end of the double-threaded rod 4 away from the reduction motor 3, a threaded sleeve 6 threadedly connected to the two sections of external threads in the double-threaded rod 4, a hinged seat 7 fixedly connected to the outer ring of the threaded sleeve 6, an articulated rod 8 rotatably connected to the articulated seat 7 at the end, and a rotating seat 9. The rotation directions of the two sections of external threads on the double-threaded rod 4 are opposite, and the ends of the articulated rods 8 on both sides away from the articulated seat 7 are rotatably connected in the rotating seat 9.

[0053] The data acquisition module 35 collects the number of turns of the spiral coil and the number of turns of the toroidal coil respectively in the vertical downward state or the horizontal state. Figure 2-Figure 4 As shown, the arc angle of the circular arc rail 14 is 90°, and a slide groove 30 with a T-shaped cross section and running through the two ends and the inner ring of the circular arc rail 14 is provided in the circular arc rail 14, and a T-shaped slide frame 31 is slidably connected in the circular arc rail 14, and a guide wheel 32 in contact with the inner side wall of the slide groove 30 is rotatably connected to the slide frame 31, and a ball groove concave upward is provided at the center of the bottom surface of the guide wheel 32, and a ball 33 that can contact the inner bottom surface of the slide groove 30 is movably connected in the ball groove, and both ends of the circular arc rail 14 are fixedly connected with end plates 26 by bolts, and a sink groove 28 is provided on the side of the end plate 26 facing the circular arc rail 14, and the sink groove 28 A through hole 27 penetrating the end plate 26 is provided on the inner wall, an end return spring 29 which can contact the slide 31 is fixedly connected in the sink groove 28, a mounting seat 15 is fixedly connected to the end plate 26 located at the upper end of the circular arc rail 14, a hole communicating with the through hole 27 to the outside is provided on the mounting seat 15, a servo motor 16 is fixedly connected to the mounting seat 15, a take-up drum 17 is fixedly connected to the output shaft of the servo motor 16, a connecting rope which passes through the hole and the through hole 27 and is fixedly connected to the slide 31 is fixedly connected to the outer ring of the take-up drum 17, and a data acquisition module 35 is fixedly connected to one end of the slide 31 which passes through the slide groove 30.

[0054] like Figure 5As shown, the image acquisition module 34 is used to capture the end face image and the peripheral image of the electromagnetic coil and feed them back to the data processing module 36. The image acquisition unit includes a stand 18, a connecting seat mounted on the stand 18, and a camera 19 detachably connected to the connecting seat.

[0055] like Figures 2 to 5 As shown, the data processing module 36 can be used to identify the type of electromagnetic coil and output the result to the control module 37, and can be used to identify the size parameters of the electromagnetic coil. The data acquisition module 35 includes a connecting tube 21 fixedly connected to one end of the slide 31 passing through the slide slot 30, a resistive displacement sensor 24 fixedly connected to one end of the slide 31 passing through the slide slot 30 and located in the connecting tube 21, and a cone needle 20 slidably connected in the connecting tube 21. A sliding groove 22 that penetrates the interior and is arranged along the length direction of the connecting tube 21 is opened on the outer peripheral wall of the connecting tube 21, a slider 23 slidably connected in the sliding groove 22 is fixedly connected to the outer peripheral wall of the cone needle 20, and a vertical reset spring 25 is fixedly connected between the detection end of the resistive displacement sensor 24 and the upper end of the cone needle 20.

[0056] like Figure 5 As shown, the data processing module 36 can be used to identify the type of electromagnetic coil and output the result to the control module 37, including the following steps:

[0057] Import the end face picture and the periphery picture of the electromagnetic coil;

[0058] Grayscale and denoise the end face and periphery images of the electromagnetic coil;

[0059] The processed end face image and peripheral image of the electromagnetic coil are used to calculate the gradient and gradient amplitude of the image through the Canny edge detection algorithm, and the edge is determined by using non-maximum suppression and double threshold processing;

[0060] The strip-shaped parallel light spot is found by using the Hough transform formula in the end face image and the peripheral image after edge detection. The Hough transform formula is ρ=x·cosθ+y·sinθ, where θ is the angle of the straight line and ρ is the distance from the straight line to the origin.

[0061] If there is a strip of parallel light spot in the end face image but not in the peripheral image, the output result is a ring coil. If there is no strip of parallel light spot in the end face image but present in the peripheral image, the output result is a spiral coil. If there is a strip of parallel light spot in both the end face image and the peripheral image, the output result is a ring coil.

[0062] The data processing module 36 can be used to identify the size parameters of the electromagnetic coil, and also includes the following steps:

[0063] Import the number of coil turns from the data acquisition module 35, and import the end face image or the peripheral image from the image acquisition module 34;

[0064] De-noising the end face image or the peripheral image;

[0065] Use the findContours function in OpenCV to extract the contour area of ​​the denoised end face image or the peripheral image Among them, P i and P i+1 are two adjacent points on the contour, n is the number of points on the contour, and det is the determinant;

[0066] The contour area A contour Compare with the end face area or side face area of ​​the electromagnetic coil, and calculate the contour area A of the end face image or the peripheral image. contour When the area of ​​the end face or the side face of the electromagnetic coil is smaller than that of the electromagnetic coil, the contour in the end face image or the peripheral image is filtered out as a clear image;

[0067] The edge detection algorithm is used to extract each coil in the clear picture, and the pixel distance of each coil is converted to the actual length. Among them, W pixel To clearly define the segment width, segment spacing, and segment height in the image, W real is the actual segment width, segment spacing, and segment height, D is the shooting distance, and f is the focal length of the camera 19;

[0068] The total coil length is calculated using the number of coil turns, actual segment width, segment spacing, and segment height.

[0069] like Figure 5 As shown, the control module 37 can be used to adjust the state of the data acquisition module 35 according to the output result of the data processing module 36, and can be used to control the orientation of the expansion component and the data acquisition module 35. The control module 37 includes a controller and a motor driver chip. The controller includes an STM32F103RCT6 embedded-microcontroller integrated circuit, and the motor driver chip includes a TB67S109AFTG motor driver chip.

[0070] The present invention also provides a detection method for an electromagnetic coil winding detection device, which uses the electromagnetic coil winding detection device as above to perform detection, comprising the following steps:

[0071] The electromagnetic coil is sleeved on the outside of the flaring component and fixed;

[0072] The image acquisition module 34 acquires the peripheral image and the end surface image of the electromagnetic coil and feeds them back to the data processing module 36;

[0073] The data processing module 36 identifies the electromagnetic coil as a ring coil or a threaded coil according to the peripheral image and the end face image and outputs the result to the control module 37;

[0074] When the received output result is a ring coil, the control module 37 controls the data acquisition module 35 to be in a horizontal state and controls the detection end of the data acquisition module 35 to contact the end surface of the ring coil, and makes the expansion component drive the electromagnetic coil to rotate, and outputs the number of coil turns through the number of beating times of the detection end of the data acquisition module 35;

[0075] When the output result is a spiral coil, the control module 37 controls the data acquisition module 35 to be in a vertical downward state and controls the detection end of the data acquisition module 35 to contact the outer circumference end of the spiral coil, and makes the flaring component drive the electromagnetic coil to move in one direction, and outputs the number of coil turns by the number of times the detection end of the data acquisition module 35 beats;

[0076] The number of coil turns, the peripheral image and the end surface image are transmitted to the data processing module 36, and the data processing module 36 identifies and derives the size parameters of the electromagnetic coil.

[0077] The detection method of the electromagnetic coil winding detection device provided by the present invention can effectively identify and measure the key parameters of the electromagnetic coil in practical applications. First, the electromagnetic coil to be detected is firmly installed on the flaring component to ensure that its position is fixed. Then, the electromagnetic coil is captured in all directions using the image acquisition module 34, including the peripheral image and the end face image. These images will be sent to the data processing module 36, which can accurately distinguish whether the electromagnetic coil is a toroidal coil or a spiral coil.

[0078] After the coil type is identified, the control module 37 will intervene to adjust the relative position and distance between the data acquisition module 35 and the electromagnetic coil to optimize the quality and accuracy of image acquisition. At the same time, the control module 37 will also instruct the data acquisition module 35 to accurately collect the number of turns of the electromagnetic coil. The collected peripheral images and end surface images will be filtered to improve the clarity of the images, ensuring that the data processing module 36 can more accurately identify the various parts of the coil.

[0079] Through this process, we can obtain the detailed dimensions of a single coil in the electromagnetic coil, including segment width, segment spacing and segment height. Combined with the number of coil turns obtained in actual detection, we can calculate the total length of the coil.

[0080] These precise data will provide a solid foundation for the final output results, allowing testers to make more accurate assessments and judgments on key characteristics of the electromagnetic coil, such as inductance, magnetic field strength and distribution, and heat dissipation performance.

[0081] The detection method of the present invention not only improves the accuracy of electromagnetic coil detection in conjunction with the detection device, but also simplifies the detection process, so that detection personnel can complete the detection task quickly and efficiently.

[0082] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An electromagnetic coil winding detection device, characterized in that: The invention comprises a flaring component which can be reciprocated in the horizontal direction, a circular arc rail (14) which is located on one side of the flaring component and can be reciprocated in the horizontal direction and the vertical direction, a data acquisition module (35) which is slidably connected to the circular arc rail (14), an image acquisition module (34), a data processing module (36), and a control module (37), wherein the flaring component can be rotatably arranged and its rotation axis is located on a horizontal plane, the data acquisition module (35) is in a vertical downward state and a horizontal state on the circular arc rail (14), and the data acquisition module (35) is in a vertical downward state or a horizontal state. In a flat state, the number of turns of the spiral coil and the number of turns of the annular coil are collected respectively; the image acquisition module (34) is used to collect an end face image and a peripheral image of the electromagnetic coil and feed them back to a data processing module (36); the data processing module (36) can be used to identify the type of the electromagnetic coil and output the result to a control module (37); can be used to identify the size parameters of the electromagnetic coil; the control module (37) can be used to adjust the state of the data acquisition module (35) according to the output result of the data processing module (36); can be used to control the orientation of the flaring component and the data acquisition module (35).

2. The electromagnetic coil winding detection device according to claim 1, characterized in that: The invention also comprises a base (1) and a bracket (10), wherein a first transverse electric slide rail (2) is fixedly connected to the base (1), a reduction motor (3) is fixedly connected to the slide seat of the first transverse electric slide rail (2), the flaring assembly is fixedly connected to the output shaft of the reduction motor (3), a second transverse electric slide rail (11) arranged horizontally is fixedly connected to the bracket (10), the second transverse electric slide rail (11) and the first transverse electric slide rail (2) have the same length direction, a vertical electric slide rail (12) is fixedly connected to the slide seat of the second transverse electric slide rail (11), and the circular arc rail (14) is fixedly connected to the slide seat of the vertical electric slide rail (12) via a connecting bracket (13).

3. The electromagnetic coil winding detection device according to claim 2, characterized in that: The flaring assembly comprises a double-threaded rod (4) coaxially fixedly connected to the output shaft of the reduction motor (3), a limit plate (5) fixedly connected to the end of the double-threaded rod (4) away from the reduction motor (3), a threaded sleeve (6) threadedly connected to two sections of external threads in the double-threaded rod (4), an articulated seat (7) fixedly connected to the outer ring of the threaded sleeve (6), an articulated rod (8) whose end is rotatably connected to the articulated seat (7), and a rotating seat (9), wherein the two sections of external threads on the double-threaded rod (4) have opposite rotation directions, and the ends of the articulated rods (8) on both sides away from the articulated seat (7) are rotatably connected to the rotating seat (9).

4. The electromagnetic coil winding detection device according to claim 1, characterized in that: The image acquisition unit comprises a stand (18), a connecting seat sleeved on the stand (18), and a camera (19) detachably connected to the connecting seat.

5. The electromagnetic coil winding detection device according to claim 1, characterized in that: The arc angle of the circular arc rail (14) is 90°. A slide groove (30) with a T-shaped cross section and penetrating the two ends and the inner ring of the circular arc rail (14) is provided in the circular arc rail (14). A T-shaped slide frame (31) is slidably connected in the circular arc rail (14). A guide wheel (32) in contact with the inner wall of the slide groove (30) is rotatably connected to the slide frame (31). A ball groove concave upward is provided at the center of the bottom surface of the guide wheel (32). A ball bearing (33) that can contact the inner bottom surface of the slide groove (30) is movably connected in the ball groove. Both ends of the circular arc rail (14) are fixedly connected with end plates (26) by bolts. A sink groove (28) is provided on the side of the end plate (26) facing the circular arc rail (14). The inner surface of the sink groove (28) is provided with a groove (28). A through hole (27) penetrating the end plate (26) is provided in the wall, an end return spring (29) capable of contacting the slide (31) is fixedly connected in the sink groove (28), a mounting seat (15) is fixedly connected to the end plate (26) located at the upper end of the circular arc rail (14), a hole is provided on the mounting seat (15) which is connected to the outside with the through hole (27), a servo motor (16) is fixedly connected to the mounting seat (15), a take-up drum (17) is fixedly connected to the output shaft of the servo motor (16), a connecting rope which passes through the hole and the through hole (27) and is fixedly connected to the slide (31) is fixedly connected to the outer ring of the take-up drum (17), and the data acquisition module (35) is fixedly connected to one end of the slide (31) which passes through the slide groove (30).

6. The electromagnetic coil winding detection device according to claim 5, characterized in that: The data acquisition module (35) comprises a connecting tube (21) fixedly connected to one end of a slide frame (31) penetrating a slide groove (30), a resistance type displacement sensor (24) fixedly connected to one end of a slide frame (31) penetrating a slide groove (30) and located in the connecting tube (21), and a cone needle (20) slidably connected in the connecting tube (21); a sliding groove (22) penetrating the interior of the connecting tube (21) and arranged along the length direction of the connecting tube (21) is provided on the outer peripheral wall of the connecting tube (21); a sliding block (23) slidably connected in the sliding groove (22) is fixedly connected to the outer peripheral wall of the cone needle (20); and a vertical return spring (25) is fixedly connected between the detection end of the resistance type displacement sensor (24) and the upper end of the cone needle (20).

7. The electromagnetic coil winding detection device according to claim 1, characterized in that: The control module (37) comprises a controller and a motor drive chip, wherein the controller comprises an STM32F103RCT6 embedded-microcontroller integrated circuit, and the motor drive chip comprises a TB67S109AFTG motor drive chip.

8. The electromagnetic coil winding detection device according to claim 1, characterized in that: The data processing module (36) can be used to identify the type of electromagnetic coil and output the result to the control module (37), including the following steps: Import the end face picture and the periphery picture of the electromagnetic coil; Grayscale and denoise the end face and periphery images of the electromagnetic coil; The processed end face image and peripheral image of the electromagnetic coil are used to calculate the gradient and gradient amplitude of the image through the Canny edge detection algorithm, and the edge is determined by using non-maximum suppression and double threshold processing; The strip-shaped parallel light spot is found by using the Hough transform formula in the end face image and the peripheral image after edge detection. The Hough transform formula is ρ=x·cosθ+y·sinθ, where θ is the angle of the straight line and ρ is the distance from the straight line to the origin. If there is a strip of parallel light spot in the end face image but not in the peripheral image, the output result is a ring coil. If there is no strip of parallel light spot in the end face image but present in the peripheral image, the output result is a spiral coil. If there is a strip of parallel light spot in both the end face image and the peripheral image, the output result is a ring coil.

9. The electromagnetic coil winding detection device according to claim 8, characterized in that: The data processing module (36) can be used to identify the size parameters of the electromagnetic coil, and also includes the following steps: Importing the number of coil turns from the data acquisition module (35), and importing the end face image or the peripheral image from the image acquisition module (34); De-noising the end face image or the peripheral image; Use the findContours function in OpenCV to extract the contour area of ​​the denoised end face image or the peripheral image Among them, P i and P i+1 are two adjacent points on the contour, n is the number of points on the contour, and det is the determinant; The contour area A contour Compare with the end face area or side face area of ​​the electromagnetic coil, and calculate the contour area A of the end face image or the peripheral image. contour When the area of ​​the end face or the side face of the electromagnetic coil is smaller than that of the electromagnetic coil, the contour in the end face image or the peripheral image is filtered out as a clear image; The edge detection algorithm is used to extract each coil in the clear picture, and the pixel distance of each coil is converted to the actual length. Among them, W pixel To clearly define the segment width, segment spacing, and segment height in the image, W real is the actual segment width, segment spacing, and segment height, D is the shooting distance, and f is the focal length of the camera (19); The total coil length is calculated using the number of coil turns, actual segment width, segment spacing, and segment height.

10. A detection method for an electromagnetic coil winding detection device, using the electromagnetic coil winding detection device according to any one of claims 1 to 9 for detection, characterized in that: The following steps are included: The electromagnetic coil is sleeved on the outside of the flaring component and fixed; The image acquisition module (34) acquires the peripheral image and the end surface image of the electromagnetic coil and feeds them back to the data processing module (36); The data processing module (36) identifies the electromagnetic coil as a ring coil or a threaded coil according to the peripheral image and the end face image and outputs the result to the control module (37); When the received output result is a ring coil, the control module (37) controls the data acquisition module (35) to be in a horizontal state and controls the detection end of the data acquisition module (35) to contact the end surface of the ring coil, and causes the expansion component to drive the electromagnetic coil to rotate, and outputs the number of coil turns through the number of beatings of the detection end of the data acquisition module (35); When the output result is a spiral coil, the control module (37) controls the data acquisition module (35) to be in a vertical downward state and controls the detection end of the data acquisition module (35) to collide with the outer circumferential end of the spiral coil, and causes the flaring component to drive the electromagnetic coil to move in one direction, and outputs the number of coil turns through the number of times the detection end of the data acquisition module (35) beats; The number of coil turns, the peripheral image and the end face image are transmitted to a data processing module (36), and the data processing module (36) identifies and exports the size parameters of the electromagnetic coil.

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