Electromagnetic interference detection apparatus and detection method

Abstract

The present invention relates to the technical field of electromagnetic testing. Disclosed are an electromagnetic interference detection apparatus and a detection method, the electromagnetic interference detection apparatus comprising a work platform, a wire winding mechanism, and a driving mechanism for driving the wire winding mechanism to move in the axial direction of a power cord, wherein the work platform is provided with a clamping mechanism for fixing a power cord to be tested; the wire winding mechanism comprises a moving frame, a first drive electric motor, and a sleeve configured to be coaxially sleeved on the power cord; the first drive electric motor is fixedly arranged on the moving frame; an output shaft of the first drive electric motor is fixedly provided with a driving gear, and the axial direction of the output shaft is parallel to that of the sleeve, the driving gear meshing with a ring gear at one end of the sleeve; and the side wall of the sleeve is provided with a wire passage hole, through which a conductive wire to be wound around the power cord can pass. Automated winding of the conductive wire around the power cord is realized, thereby greatly improving work efficiency, and reducing the complexity and errors in manual operations.

Description

An electromagnetic interference detection device and method Technical Field

[0001] This invention relates to the field of electromagnetic detection technology, and in particular to an electromagnetic interference detection device and method. Background Technology

[0002] In modern electronic devices, power lines serve as the primary channel for energy transmission, and while transmitting electrical energy, they also become a significant source of electromagnetic interference (EMI). EMI refers to any electromagnetic energy capable of interrupting, hindering, reducing, or limiting the effective performance of electrical and electronic equipment. Changes in current and voltage transmitted on power lines generate electromagnetic fields, which radiate outwards, affecting surrounding electronic equipment and causing problems such as signal distortion, data loss, and system crashes.

[0003] Electromagnetic interference from power lines is mainly divided into two types: conducted interference and radiated interference. Conducted interference is interference that is directly transmitted to other circuits or devices through the power line, and this type of interference is usually caused by high-frequency currents on the power line. Radiated interference, on the other hand, is caused by electromagnetic fields generated by changes in current and voltage on the power line, which are radiated outwards and affect other equipment in the surrounding space.

[0004] Patent CN202351353U describes a power line conducted electromagnetic interference detection system. The current probe used in this system can be regarded as a weakly coupled transformer with a wound coil. The primary winding of the wound coil is generally connected to a coaxial connector, and the power line around which it is wound can be regarded as a secondary coil. When the electronic device is powered on, a current is generated inside its power line and detected by the current probe. The current probe can detect DM interference and CM interference present in the power line through related equipment and data processor.

[0005] However, currently, when using the above-mentioned power line conducted electromagnetic interference detection system, it is always necessary to manually wind coils on the power line, which is time-consuming and labor-intensive, and the tightness and uniformity of the manually wound coils are not easy to control. Summary of the Invention

[0006] This invention provides an electromagnetic interference detection device and method, which solves the technical problem that the prior art requires manual winding of coils on power lines, and that the tightness and uniformity of manually wound coils are difficult to control.

[0007] The first aspect of this invention provides an electromagnetic interference detection device. ， It includes a worktable, a winding mechanism, and a drive mechanism for driving the winding mechanism to move axially along the power line;

[0008] The workbench is equipped with a clamping mechanism for fixing the power cord to be tested.

[0009] The winding mechanism includes a moving frame, a first drive motor, and a sleeve for coaxially sleeved on the power cord.

[0010] The first drive motor is fixed on the movable frame;

[0011] A drive gear is fixed on the output shaft of the first drive motor, and the axial direction of the output shaft is parallel to the axial direction of the sleeve. The drive gear meshes with a gear ring at one end of the sleeve.

[0012] A wire-passing hole is provided on the side wall of the sleeve, which is used for the wires that need to be wrapped around the power line to pass through.

[0013] Optionally, the winding mechanism further includes multiple support units;

[0014] The outer wall of the sleeve is provided with at least two annular grooves coaxial with the sleeve, and the support unit corresponds to each annular groove.

[0015] The support unit includes multiple support mechanisms evenly distributed circumferentially along the sleeve.

[0016] The support mechanism includes a support frame fixedly connected to the movable frame and support wheels rotatably mounted on the support frame;

[0017] The support wheel rolls into the annular groove.

[0018] Optionally, the clamping mechanism includes two clamping units;

[0019] The clamping unit includes a first fixing block and a second fixing block connected to the first fixing block by a first bolt;

[0020] The first fixing block is fixed to the workbench;

[0021] The power cord is clamped between the first fixing block and the second fixing block;

[0022] The first fixing block and the second fixing block are respectively provided with arc-shaped concave surfaces corresponding to the power line;

[0023] The arc-shaped concave surface is used to fit against the outer surface of the power cord.

[0024] Optionally, a first gap is provided between the inner wall of the sleeve and the power cord, and the width of the first gap is equal to the diameter of the wire.

[0025] Optionally, a rubber ring is fixedly provided on the inner wall of the sleeve;

[0026] A second gap is provided between the inner wall of the rubber ring and the outer wall of the power cord;

[0027] The second interval is smaller than the first interval;

[0028] The rubber ring presses the wire within the second interval against the outer wall of the power cord.

[0029] Optionally, the number of both the annular groove and the support unit is two;

[0030] Each of the support units includes four of the support mechanisms.

[0031] Optionally, the sleeve includes two sub-sleeves, each being semi-cylindrical.

[0032] One end of the sub-sleeve is provided with a T-groove;

[0033] A T-shaped strip is provided at the other end of the sub-sleeve;

[0034] The length directions of both the T-groove and the T-strip are parallel to the axial direction of the sleeve.

[0035] The T-strips on each of the sub-sleeves are in sliding engagement with the T-grooves on the other sub-sleeve.

[0036] Optionally, it also includes a top plate;

[0037] The top plate is parallel to the workbench and is fixedly connected to the workbench by multiple support columns;

[0038] One end of the support column is fixedly connected to the workbench;

[0039] The other end of the support column is fixedly connected to the top plate.

[0040] Optionally, the drive mechanism includes a lead screw and a second drive motor fixed to the top plate;

[0041] One end of the lead screw is fixedly connected to the output shaft of the second drive motor;

[0042] The other end of the lead screw is rotatably engaged with a mounting base fixed on the top plate, and the axial direction of the lead screw is parallel to the axial direction of the sleeve.

[0043] A connecting plate is fixed to the top of the movable frame, and the connecting plate is threadedly connected to the lead screw;

[0044] The top plate has an elongated notch corresponding to the connecting plate;

[0045] The connecting plate passes through the elongated notch and slides within the elongated notch;

[0046] Several guide rods are fixed in the elongated notch;

[0047] The axial direction of the guide rod is parallel to the axial direction of the lead screw;

[0048] The connecting plate is slidably sleeved on each of the guide rods.

[0049] A second aspect of the present invention provides a detection method for an electromagnetic interference detection device, comprising:

[0050] Pass the wire that needs to be wrapped around the power cord to be tested through the wire hole, and fix one end of the wire at the beginning of the coil to be formed.

[0051] The power cord is threaded through the sleeve and secured by a clamping mechanism.

[0052] The first drive motor is started to drive the sleeve to rotate. At the same time, the drive mechanism is started to drive the moving frame and the sleeve to move along the axial direction of the power line, thereby winding the wire around the power line to form a wound coil.

[0053] As can be seen from the above technical solutions, the present invention has the following advantages:

[0054] The electromagnetic interference detection device of the present invention drives the sleeve to rotate by a first drive motor, and in combination with the drive mechanism, drives the entire winding mechanism to move along the power line axis, thereby realizing the automated winding of the wire on the power line, which greatly improves work efficiency and reduces the complexity and error of manual operation. Attached Figure Description

[0055] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0056] Figure 1 is a schematic diagram of the electromagnetic interference detection device according to an embodiment of the present invention;

[0057] Figure 2 is a magnified view of part A in Figure 1;

[0058] Figure 3 is a magnified view of part B in Figure 1;

[0059] Figure 4 is a magnified view of part C in Figure 1;

[0060] Figure 5 is a schematic diagram of the clamping unit structure of the electromagnetic interference detection device according to Embodiment 1 of the present invention;

[0061] Figure 6 is a schematic diagram of the top plate structure of the electromagnetic interference detection device according to Embodiment 1 of the present invention;

[0062] Figure 7 is a schematic diagram of the inside of the sleeve of the electromagnetic interference detection device according to Embodiment 1 of the present invention;

[0063] Figure 8 is a schematic diagram of the sleeve structure of the electromagnetic interference detection device according to Embodiment 2 of the present invention;

[0064] Figure 9 is a flowchart of the detection method of an electromagnetic interference detection device according to an embodiment of the present invention.

[0065] The meanings of the reference numerals in the attached drawings are as follows: 1. Workbench; 2. Top plate; 3. Second drive motor; 4. Support column; 5. First fixing block; 6. First drive motor; 7. Second fixing block; 8. First bolt; 9. Connecting plate; 10. Lead screw; 11. Moving frame; 12. Winding coil; 13. Power cord; 14. Drive gear; 15. Gear ring; 16. Mounting base; 17. Sleeve; 171. First sub-sleeve; 172. Second sub-sleeve; 173. T-strip; 174. T-slot; 18. Wire; 19. Support frame; 20. Support wheel; 21. Support mechanism; 22. Ring groove; 23. Wire hole; 24. Rubber ring; 25. Guide rod. Detailed Implementation

[0066] This invention provides an electromagnetic interference detection device and method to solve the technical problem that the prior art requires manual winding of coils on power lines, and that the tightness and uniformity of the manually wound coils are difficult to control.

[0067] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0068] Example 1

[0069] Please refer to Figures 1-7. The electromagnetic interference detection device provided by the present invention includes a workbench 1, a winding mechanism, and a drive mechanism for driving the winding mechanism to move axially along the power line 13.

[0070] The workbench 1 is equipped with a clamping mechanism for fixing the power cord 13 to be tested;

[0071] The winding mechanism includes a movable frame 11, a first drive motor 6, and a sleeve 17 for coaxially sleeved on the power cord 13;

[0072] The first drive motor 6 is fixed on the movable frame 11;

[0073] A drive gear 14 is fixed on the output shaft of the first drive motor 6, and the axial direction of the output shaft is parallel to the axial direction of the sleeve 17. The drive gear 14 meshes with the gear ring 15 at one end of the sleeve 17.

[0074] A wire hole 23 is provided on the side wall of the sleeve 17, which is used for the wire 18 that needs to be wrapped around the power cord 13 to pass through.

[0075] The specific working principle of the electromagnetic interference detection device in this embodiment is as follows:

[0076] Pass the wire 18 that needs to be wound on the power cord 13 through the wire hole 23, then pass the power cord 13 to be tested through the sleeve 17, and fix the power cord 13 with the clamping mechanism to ensure that the power cord 13 and the sleeve 17 are coaxial. Fix a point on the wire 18 at the beginning of the winding coil 12 to be formed by adhesive bonding.

[0077] Then, the drive mechanism and the first drive motor 6 are turned on at the same time. While the first drive motor 6 drives the sleeve 17 to rotate, the drive mechanism drives the moving frame 11 and the sleeve 17 to move along the axial direction of the power line 13, thereby winding the wire 18 onto the power line 13 to form a wound coil 12.

[0078] It should be noted that the distance between two adjacent coils in the winding coil 12 can be adjusted by adjusting the speed at which the drive mechanism moves the moving frame 11 and the sleeve 17 along the axial direction of the power line 13, which is convenient to use.

[0079] It is worth mentioning that the electromagnetic interference detection device of the present invention drives the sleeve 17 to rotate through the first drive motor 6, and drives the entire winding mechanism to move along the axial direction of the power line 13 in combination with the drive mechanism, thereby realizing the automated winding of the wire 18 on the power line 13, which greatly improves the work efficiency and reduces the complexity and error of manual operation.

[0080] It is worth mentioning that the first drive motor 6 can drive the sleeve 17 to rotate at a constant speed, which improves the stability of the winding wire 18 process.

[0081] Please refer to Figures 1 and 2. The electromagnetic interference detection device provided by the present invention includes a winding mechanism that further includes multiple support units.

[0082] At least two annular grooves 22 coaxial with the sleeve 17 are provided on the outer wall of the sleeve 17, and the support unit corresponds to the annular groove 22 one by one;

[0083] The support unit includes multiple support mechanisms 21 evenly distributed along the circumference of the sleeve 17;

[0084] The support mechanism 21 includes a support frame 19 fixedly connected to the movable frame 11 and a support wheel 20 rotatably mounted on the support frame 19;

[0085] The support wheel 20 and the annular groove 22 are in rolling contact.

[0086] It should be noted that at least two annular grooves 22 coaxial with the sleeve 17 are provided on the outer wall of the sleeve 17. The support unit corresponds to the annular groove 22 one by one. Each support unit includes multiple support mechanisms 21 evenly distributed along the circumference of the sleeve 17. The support mechanism 21 includes a support frame 19 fixedly connected to the movable frame 11 and a support wheel 20 rotatably mounted on the support frame 19. The support wheel 20 rolls with the corresponding annular groove 22.

[0087] It is worth mentioning that the support wheel 20 on the support mechanism 21 rolls with the outer wall of the sleeve 17, which reduces the friction when the sleeve 17 rotates, thereby reducing the power requirement of the first drive motor 6, which is conducive to using a smaller motor as the first drive motor 6.

[0088] Please refer to Figure 5. The electromagnetic interference detection device provided by the present invention includes a clamping mechanism comprising two clamping units.

[0089] The clamping unit includes a first fixing block 5 and a second fixing block 7 connected to the first fixing block 5 by a first bolt 8;

[0090] The first fixing block 5 is fixed to the workbench 1;

[0091] The power cord 13 is clamped between the first fixing block 5 and the second fixing block 7.

[0092] It should be noted that the function of the clamping mechanism is to fix the power cord 13. Specifically, the clamping mechanism includes two clamping units. Each clamping unit includes a first fixing block 5 and a second fixing block 7 connected to the first fixing block 5 by two first bolts 8. The first fixing block 5 is fixed on the workbench 1, and the power cord 13 is clamped between the first fixing block 5 and the second fixing block 7.

[0093] Please refer to Figure 5. The electromagnetic interference detection device provided by the present invention has an arc-shaped concave surface provided for the first fixing block 5 and the second fixing block 7 respectively corresponding to the power line 13.

[0094] The curved concave surface is used to fit against the outer surface of the power cord 13.

[0095] In the optional solutions of this embodiment, it is more preferred that the first fixing block 5 and the second fixing block 7 are respectively provided with arc-shaped concave surfaces corresponding to the power cord 13. The arc-shaped concave surfaces are used to fit against the outer surface of the power cord 13. The provision of the arc-shaped concave surfaces can ensure that the first fixing block 5 and the second fixing block 7 firmly clamp the power cord 13 and position the power cord 13, so as to prevent the power cord 13 from becoming loose.

[0096] It is worth mentioning that the clamping mechanism uses two fixing blocks, and the arc-shaped concave surface ensures the stable fixation of the power cord 13 during the winding process, avoiding the loosening or positional displacement of the power cord 13 during operation, and ensuring the consistency and accuracy of coil winding.

[0097] Please refer to Figures 1 and 7. The present invention provides an electromagnetic interference detection device in which a first gap is provided between the inner wall of the sleeve 17 and the power line 13, and the width of the first gap is equal to the diameter of the wire 18.

[0098] It should be noted that, preferably, the width of the first gap is equal to the diameter of the wire 18, so that the width of the first gap is equal to the diameter of the wire 18, which can avoid interference between the inner wall of the sleeve 17 and the formed wound coil 12, and at the same time can also prevent the wound coil 12 from becoming loose.

[0099] Please refer to Figures 1 and 7. The present invention provides an electromagnetic interference detection device, wherein a rubber ring 24 is fixed on the inner wall of the sleeve 17.

[0100] A second gap is provided between the inner wall of the rubber ring 24 and the outer wall of the power cord 13;

[0101] The second interval is smaller than the first interval;

[0102] The rubber ring 24 presses the wire 18 in the second interval against the outer wall of the power cord 13.

[0103] It should be noted that, preferably, a rubber ring 24 is fixed on the inner wall of the sleeve 17, and there is a second gap between the inner wall of the rubber ring 24 and the outer wall of the power cord 13, the second gap being smaller than the first gap; the rubber ring 24 presses the wire 18 within the second gap onto the outer wall of the power cord 13.

[0104] During the rotation of the sleeve 17, the rubber ring 24 presses the wire 18 tightly against the outer wall of the power cord 13, ensuring that the wire 18 is stably wound on the outer wall of the power cord 13 and that the winding coil 12 is stably attached to the outer wall of the power cord 13. It should be noted that the rubber ring 24 is made of rubber, which is elastic and can press the wire 18 without damaging it.

[0105] It is worth mentioning that the rubber ring 24 set on the inner wall of the sleeve 17 not only avoids direct contact between the coil and the inner wall of the sleeve 17, preventing the coil from deforming or being damaged, but also ensures the stability of the wire 18 during the winding process through the design of the second interval, so that the coil and the power line 13 maintain good contact and improve the reliability of the test results.

[0106] Please refer to Figures 1 and 2. The electromagnetic interference detection device provided by the present invention has two annular grooves 22 and two support units.

[0107] Each support unit includes four support mechanisms 21.

[0108] In this embodiment, there are two annular grooves 22 and two support units, and each support unit includes four support mechanisms 21.

[0109] Please refer to Figures 1 and 6. The electromagnetic interference detection device provided by the present invention also includes a top plate 2.

[0110] The top plate 2 is parallel to the workbench 1 and is fixedly connected to the workbench 1 by multiple support columns 4;

[0111] One end of the support column 4 is fixedly connected to the workbench 1;

[0112] The other end of the support column 4 is fixedly connected to the top plate 2.

[0113] It should be noted that the electromagnetic interference detection device in this embodiment also includes a top plate 2, which is parallel to the workbench 1 and is fixedly connected to the workbench 1 through multiple support columns 4. Each support column 4 is fixedly connected to the workbench 1 at one end and to the top plate 2 at the other end.

[0114] Please refer to Figures 1 and 6. The electromagnetic interference detection device provided by the present invention includes a drive mechanism comprising a lead screw 10 and a second drive motor 3 fixed on the top plate 2.

[0115] One end of the lead screw 10 is fixedly connected to the output shaft of the second drive motor 3;

[0116] The other end of the lead screw 10 is rotatably engaged with the mounting base 16 fixed on the top plate 2, and the axial direction of the lead screw 10 is parallel to the axial direction of the sleeve 17.

[0117] A connecting plate 9 is fixedly provided at the top of the movable frame 11, and the connecting plate 9 is threadedly connected to the lead screw 10;

[0118] The top plate 2 has a long strip notch corresponding to the connecting plate 9;

[0119] The connecting plate 9 passes through the elongated notch and slides within the elongated notch;

[0120] Several guide rods 25 are fixedly installed in the elongated notch;

[0121] The axial direction of the guide rod 25 is parallel to the axial direction of the lead screw 10;

[0122] The connecting plate 9 is slidably sleeved on each guide rod 25.

[0123] It should be noted that the function of the drive mechanism is to drive the winding mechanism to move along the axial direction of the power line 13. In this embodiment, the drive mechanism includes a lead screw 10 and a second drive motor 3 fixed on the top plate 2. One end of the lead screw 10 is fixedly connected to the output shaft of the second drive motor 3, and the other end is rotatably engaged with the mounting base 16 fixed on the top plate 2. The axial direction of the lead screw 10 is parallel to the axial direction of the sleeve 17. A connecting plate 9 is fixedly provided at the top of the moving frame 11, and the connecting plate 9 is threadedly connected to the lead screw 10. A long strip-shaped notch is provided on the top plate 2 corresponding to the connecting plate 9. The connecting plate 9 passes through the long strip-shaped notch and can slide in the long strip-shaped notch. Several guide rods 25 are fixed in the long strip-shaped notch. The axial direction of the guide rods 25 is parallel to the axial direction of the lead screw 10. The connecting plate 9 is slidably sleeved on each guide rod 25.

[0124] When the second drive motor 3 is working, it drives the lead screw 10 to rotate. The rotation of the lead screw 10 will drive the connecting plate 9 to slide along the guide rod 25. The connecting plate 9 will then drive the moving frame 11 to move together. Since the axial direction of the guide rod 25, the axial direction of the lead screw 10, the axial direction of the power line 13 and the axial direction of the sleeve 17 are parallel to each other, the winding mechanism as a whole can move along the axial direction of the power line 13.

[0125] It should be noted that the electromagnetic interference detection system and principle in the electromagnetic interference detection device of this embodiment are the same as those in the existing patent CN202351353U, so they will not be described in detail in this embodiment. In this embodiment, the winding mechanism automatically winds the power line 13 to form a wound coil 12, which is the coil in the current probe in patent CN202351353U.

[0126] It is worth mentioning that by adjusting the output speed of the drive mechanism, the distance between adjacent coils in the winding coil 12 can be flexibly adjusted to meet the requirements of different detection needs for coil spacing, thereby enhancing the adaptability of the equipment and the accuracy of the experiment.

[0127] Example 2

[0128] As shown in Figure 8, this embodiment provides an electromagnetic interference detection device. The structure and working principle of the electromagnetic interference detection device in this embodiment are basically the same as those of the electromagnetic interference detection device in Embodiment 1, with the only difference being:

[0129] Sleeve 17 includes two sub-sleeves, each being semi-cylindrical in shape;

[0130] One end of the sleeve is provided with a T-slot 174;

[0131] The other end of the sleeve is provided with a T-shaped strip 173;

[0132] The length directions of both the T-slot 174 and the T-strip 173 are parallel to the axial direction of the sleeve 17;

[0133] The T-slots 173 on the sub-sleeve are all in sliding engagement with the T-grooves 174 on the other sub-sleeve.

[0134] It should be noted that, considering that some power cords 13 have plugs at their ends, making it difficult to easily pass the power cord 13 through the sleeve 17 (i.e., difficult to easily coaxially mount the sleeve 17 onto the power cord 13), in this embodiment, the sleeve 17 is designed to be detachable to facilitate coaxial mounting of the sleeve 17 onto the power cord 13. Specifically:

[0135] In this embodiment, the sleeve 17 includes two semi-cylindrical sub-sleeves, namely the first sub-sleeve 171 and the second sub-sleeve 172. Each sub-sleeve has a T-groove 174 at one end and a T-strip 173 at the other end. The length directions of the T-groove 174 and the T-strip 173 are parallel to the axial direction of the sleeve 17. The T-strip 173 on each sub-sleeve can slide and engage with the T-groove 174 on the other sub-sleeve.

[0136] It is worth mentioning that for the power cord 13 with plug, the sleeve 17 adopts a detachable design, consisting of two semi-cylindrical sub-sleeves. The T-slot 174 and T-strip 173 cooperate to achieve quick assembly and disassembly, which greatly facilitates the installation of the sleeve 17 on the power cord 13 and enhances the compatibility of the equipment with different types of power cords 13.

[0137] In addition, in order to facilitate the disassembly of the sleeve 17 into two sub-sleeves, the movable frame 11 in this embodiment is detachable. Specifically, the movable frame 11 can be composed of multiple connecting rods connected by bolts or snap-fits to facilitate the disassembly of the movable frame 11. Since it is common prior art to connect multiple connecting rods by bolts or snap-fits to form a frame, the specific details will not be elaborated in this invention.

[0138] When it is necessary to coaxially mount the sleeve 17 onto the power cord 13: First, disassemble the moving frame 11, then remove the sleeve 17, separate the two sub-sleeves, then mount one sub-sleeve onto one side of the power cord 13, mount the other sub-sleeve onto the other side of the power cord 13, and insert the T-shaped strip 173 on each sub-sleeve into the T-shaped groove 174 on the other sub-sleeve, so that the sleeve 17 is mounted on the power cord 13 as a whole. Then, assemble the moving frame 11 and support the sleeve 17 on each support wheel 20.

[0139] It is worth mentioning that the detachable design of the mobile frame 11 not only facilitates the disassembly and assembly of the sleeve 17, but also ensures the stability and durability of the entire equipment structure. The bolt connection or snap-fit ​​of the connecting rod simplifies the maintenance and adjustment process, and improves the service life and ease of operation of the equipment.

[0140] Please refer to Figure 9. The present invention provides a detection method for an electromagnetic interference detection device, comprising:

[0141] Step 101: Pass the wire 18 that needs to be wrapped around the power cord 13 to be tested through the wire hole 23, and fix one end of the wire 18 at the beginning of the winding coil 12 to be formed.

[0142] Step 102: Pass the power cord 13 through the sleeve 17 and fix the power cord 13 by clamping mechanism.

[0143] Step 103: Start the first drive motor to drive the sleeve 17 to rotate. At the same time, start the drive mechanism to drive the moving frame 11 and the sleeve 17 to move along the axial direction of the power line 13, thereby winding the wire 18 onto the power line 13 to form a wound coil 12.

[0144] In this embodiment of the invention, the wire 18 to be wound on the power cord 13 is passed through the wire hole 23, and then the power cord 13 to be tested is passed through the sleeve 17. The power cord 13 is fixed with a clamping mechanism to ensure that the power cord 13 and the sleeve 17 are coaxial. A point on the wire 18 is fixed at the beginning of the winding coil 12 to be formed by adhesive bonding.

[0145] Then, the drive mechanism and the first drive motor 6 are turned on at the same time. While the first drive motor 6 drives the sleeve 17 to rotate, the drive mechanism drives the moving frame 11 and the sleeve 17 to move along the axial direction of the power line 13, thereby winding the wire 18 onto the power line 13 to form a wound coil 12.

[0146] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0147] In the embodiments provided by this invention, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection between devices or units through some interfaces, and may be electrical, mechanical, or other forms.

[0148] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An electromagnetic interference detection device, characterized in that, It includes a worktable, a winding mechanism, and a drive mechanism for driving the winding mechanism to move axially along the power line; The workbench is equipped with a clamping mechanism for fixing the power cord to be tested. The winding mechanism includes a moving frame, a first drive motor, and a sleeve for coaxially sleeved on the power cord. The first drive motor is fixed on the movable frame; A drive gear is fixed on the output shaft of the first drive motor, and the axial direction of the output shaft is parallel to the axial direction of the sleeve. The drive gear meshes with a gear ring at one end of the sleeve. A wire-passing hole is provided on the side wall of the sleeve, which is used for the wires that need to be wrapped around the power line to pass through.

2. The electromagnetic interference detection device according to claim 1, characterized in that, The winding mechanism also includes multiple support units; The outer wall of the sleeve is provided with at least two annular grooves coaxial with the sleeve, and the support unit corresponds to each annular groove. The support unit includes multiple support mechanisms evenly distributed circumferentially along the sleeve. The support mechanism includes a support frame fixedly connected to the movable frame and support wheels rotatably mounted on the support frame; The support wheel rolls into the annular groove.

3. The electromagnetic interference detection device according to claim 1, characterized in that, The clamping mechanism includes two clamping units; The clamping unit includes a first fixing block and a second fixing block connected to the first fixing block by a first bolt; The first fixing block is fixed to the workbench; The power cord is clamped between the first fixing block and the second fixing block; The first fixing block and the second fixing block are respectively provided with arc-shaped concave surfaces corresponding to the power line; The arc-shaped concave surface is used to fit against the outer surface of the power cord.

4. The electromagnetic interference detection device according to claim 1, characterized in that, A first gap is provided between the inner wall of the sleeve and the power line, and the width of the first gap is equal to the diameter of the wire.

5. The electromagnetic interference detection device according to claim 4, characterized in that, A rubber ring is fixedly provided on the inner wall of the sleeve; A second gap is provided between the inner wall of the rubber ring and the outer wall of the power cord; The second interval is smaller than the first interval; The rubber ring presses the wire within the second interval against the outer wall of the power cord.

6. The electromagnetic interference detection device according to claim 2, characterized in that, The number of the annular groove and the number of the support unit are both two; Each of the support units includes four of the support mechanisms.

7. The electromagnetic interference detection device according to claim 1, characterized in that, The sleeve includes two sub-sleeves, each being semi-cylindrical in shape; One end of the sub-sleeve is provided with a T-groove; A T-shaped strip is provided at the other end of the sub-sleeve; The length directions of both the T-groove and the T-strip are parallel to the axial direction of the sleeve. The T-strips on each of the sub-sleeves are in sliding engagement with the T-grooves on the other sub-sleeve.

8. The electromagnetic interference detection device according to claim 1, characterized in that, It also includes the roof slab; The top plate is parallel to the workbench and is fixedly connected to the workbench by multiple support columns; One end of the support column is fixedly connected to the workbench; The other end of the support column is fixedly connected to the top plate.

9. The electromagnetic interference detection device according to claim 8, characterized in that, The drive mechanism includes a lead screw and a second drive motor fixed to the top plate; One end of the lead screw is fixedly connected to the output shaft of the second drive motor; The other end of the lead screw is rotatably engaged with a mounting base fixed on the top plate, and the axial direction of the lead screw is parallel to the axial direction of the sleeve. A connecting plate is fixed to the top of the movable frame, and the connecting plate is threadedly connected to the lead screw; The top plate has an elongated notch corresponding to the connecting plate; The connecting plate passes through the elongated notch and slides within the elongated notch; Several guide rods are fixed in the elongated notch; The axial direction of the guide rod is parallel to the axial direction of the lead screw; The connecting plate is slidably sleeved on each of the guide rods.

10. A detection method for an electromagnetic interference detection device applied to any one of claims 1-9, characterized in that, include: Pass the wire that needs to be wrapped around the power cord to be tested through the wire hole, and fix one end of the wire at the beginning of the coil to be formed. The power cord is threaded through the sleeve and secured by a clamping mechanism. The first drive motor is started to drive the sleeve to rotate. At the same time, the drive mechanism is started to drive the moving frame and the sleeve to move along the axial direction of the power line, thereby winding the wire around the power line to form a wound coil.

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