A testing device and method for electromagnetic compatibility radiated emissions of switching power supplies

Abstract

This invention relates to the field of switching power supply technology, specifically to a switching power supply electromagnetic compatibility radiated interference testing device and method. A drive gear is rotatably mounted inside the device housing. An upper detection plate is slidably mounted on the upper side of the drive gear, and a lower detection plate is slidably mounted on the lower side. The drive gear is used to push the upper or lower detection plate. Detection antennas are mounted on the lower surfaces of both the upper and lower detection plates. Support feet are rotatably mounted on corresponding ends of both the upper and lower detection plates. By rotating the drive nut on the drive gear, the drive gear shaft rotates inside the device housing. As the drive gear rotates, the upper and lower detection plates move in opposite directions, protruding from the device housing. The detection antennas are not obstructed as the lower detection plate moves away. Simultaneously, the power switch can be directly tested through a through-slot on the lower detection plate, improving the flexibility of the device and the testing range.

Description

Technical Field

[0001] This invention relates to a testing device and a testing method thereof, and more particularly to a testing device and a testing method for electromagnetic compatibility radiated emissions of switching power supplies, belonging to the field of switching power supply technology. Background Technology

[0002] A switching power supply is a type of power supply that uses modern power electronics technology to control the on and off time ratio of switching transistors to maintain a stable output voltage. Switching power supplies are generally composed of a pulse width modulation control IC and a MOSFET. With the development and innovation of power electronics technology, switching power supply technology is also constantly innovating. Switching power supplies are widely used in almost all electronic devices due to their small size, light weight and high efficiency. They are an indispensable power supply method for the rapid development of today's electronic information industry.

[0003] However, during the use of switching power supplies, it is necessary to detect the electromagnetic radiation of the power supply in order to understand the radiation parameters. In the current technology, there is no special device for testing the electromagnetic radiation of switching power supplies. Moreover, different models of switching power supplies require different devices for testing. For example, larger switching power supplies require larger devices for testing, and correspondingly, smaller switching power supplies require smaller devices for testing, which is extremely inconvenient to use.

[0004] Therefore, it is urgent to improve the testing equipment for switching power supplies in order to solve the above-mentioned problems. Summary of the Invention

[0005] The purpose of this invention is to provide a testing device and method for electromagnetic compatibility radiated interference of switching power supplies. By rotating the drive nut on the drive gear, the drive gear shaft rotates inside the device housing. As the drive gear rotates, the upper and lower detection plates move in opposite directions and protrude from the device housing. The detection antenna is not blocked as the lower detection plate moves away. At the same time, the power switch can also be directly tested through the through slot on the lower detection plate, improving the flexibility of the device and the detection range.

[0006] To achieve the above objectives, the main technical solutions adopted by the present invention include:

[0007] An electromagnetic compatibility radiated interference testing device for a switching power supply includes a housing. A drive gear is rotatably mounted inside the housing. An upper detection plate is slidably mounted on the upper side of the drive gear, and a lower detection plate is slidably mounted on the lower side of the drive gear. A drive rack is fixedly mounted on the lower side of the upper detection plate and the upper side of the lower detection plate. The drive rack meshes with the drive gear. The drive gear is used to push the upper detection plate or the lower detection plate left and right.

[0008] The lower sides of both the upper and lower detection plates are fixedly provided with a plurality of evenly distributed detection antennas, and the lower detection plate is provided with a through slot corresponding to the detection antennas on the upper detection plate;

[0009] The upper detection plate and the lower detection plate are each rotatably equipped with a support foot at one end.

[0010] Preferably, the drive gear is rotatably disposed in the middle of the device housing via a drive gear shaft, wherein one of the drive gear shafts passes through the device housing and is connected to a drive nut, and the drive nut is disposed on the outside of the device housing.

[0011] Preferably, the upper detection plate moves in the opposite direction to the lower detection plate, and an upper support foot support plate is provided at one end of the upper detection plate, and an upper support foot rotating groove is fixedly provided at one end of the upper support foot support plate.

[0012] A lower support foot support plate is provided at one end of the lower detection plate, and a lower support foot rotating groove is fixedly provided on the lower support foot support plate;

[0013] The support foot is rotatably mounted inside the upper support foot support plate or the lower support foot support plate via a support foot pivot.

[0014] Preferably, a support foot connecting block is fixedly provided on the support foot, the support foot connecting block is fixedly connected to the support foot pivot, a telescopic plate shell is fixedly provided below the support foot pivot, a telescopic rod inner rod is slidably provided inside the telescopic plate shell, and an anti-slip pad is fixedly provided at the bottom of the telescopic rod inner rod.

[0015] Preferably, sliders are fixedly provided on both sides of the upper detection plate and the lower detection plate, and cylindrical sliders are fixedly provided on the sliders. The inner side of the device housing is provided with a detection plate groove corresponding to the slider, and the slider is slidably connected to the detection plate groove.

[0016] Preferably, a fixing plate is fixedly provided at both ends of the device housing, and a third magnet is fixedly provided on the outer side of one of the fixing plates, the third magnet corresponding to the supporting foot.

[0017] Preferably, a first magnet is fixedly provided on the bottom side of the lower detection plate, and the first magnet corresponds to the support foot on the lower detection plate.

[0018] Preferably, a second magnet is fixedly provided on the upper side of the upper detection plate, and the second magnet corresponds to the support foot on the upper detection plate.

[0019] Preferably, a housing handle is fixedly provided on the upper side of the device housing, and an anti-slip sleeve is provided on the housing handle.

[0020] A test method for a switching power supply electromagnetic compatibility radiated interference test device includes the following steps:

[0021] Step 1: Rotate the drive nut on the drive gear on the device housing according to the width of the power switch, so that the upper and lower detection plates slide relative to each other to expand the detection range;

[0022] Step 2: Then rotate the support feet on the upper detection plate downwards from the upper side of the upper detection plate, and rotate the support feet on the lower detection plate downwards to support the device housing;

[0023] Step 3: Adjust the height of the two support feet so that the device housing is suspended above the power supply.

[0024] Step 4: Activate the detection antennas on the upper and lower detection boards to test the switching power supply;

[0025] Step 5: After use, push the inner rod of the telescopic rod on the support foot into the inside of the telescopic plate shell and make it fit with the first magnet or the second magnet, then rotate the drive gear in the opposite direction.

[0026] The present invention has at least the following beneficial effects:

[0027] 1. Rotate the drive nut on the drive gear. The drive gear shaft rotates inside the device housing. As the drive gear rotates, the upper and lower detection plates will move in opposite directions. The upper and lower detection plates will protrude from the device housing. The detection antenna will not be blocked as the lower detection plate moves away. At the same time, the power switch can also be directly detected through the through slot on the lower detection plate, improving the flexibility of the device and the detection range. Attached Figure Description

[0028] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0029] Figure 1 This is a perspective view of the present invention;

[0030] Figure 2 The structure of the present invention Figure 1 ;

[0031] Figure 3 The structure of the present invention Figure 2 ;

[0032] Figure 4 The structure of the present invention Figure 3 ;

[0033] Figure 5 This is a bottom view of the present invention;

[0034] Figure 6 This is a top view of the present invention.

[0035] In the diagram, 1-device housing, 101-detection plate slide groove, 102-fixed plate, 2-upper detection plate, 201-upper support foot support plate, 202-upper support foot rotating groove, 3-lower detection plate, 301-lower support foot support plate, 302-lower support foot rotating groove, 303-through groove, 4-drive rack, 5-drive gear, 501-drive nut, 502-drive gear shaft, 6-slider, 601-cylindrical slider, 7-support foot, 701-telescopic plate outer shell, 702-telescopic rod inner rod, 703-anti-slip pad, 704-support foot connecting block, 705-support foot shaft, 8-housing handle, 9-detection antenna, 10-first magnet, 11-second magnet, 12-third magnet. Detailed Implementation

[0036] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0037] like Figures 1-6 As shown, the switching power supply electromagnetic compatibility radiated interference testing device provided in this embodiment includes a device housing 1. A drive gear 5 is rotatably arranged inside the device housing 1. An upper detection plate 2 is slidably arranged on the upper side of the drive gear 5, and a lower detection plate 3 is slidably arranged on the lower side of the drive gear 5. A drive rack 4 is fixedly arranged on the lower side of the upper detection plate 2 and the upper side of the lower detection plate 3. The drive rack 4 is meshed with the drive gear 5. The drive gear 5 is used to push the upper detection plate 2 or the lower detection plate 3 left and right.

[0038] An upper detection plate 2 is located at the top and a lower detection plate 3 is located at the bottom inside the device housing 1. During the counterclockwise rotation of the drive gear 5, the drive gear 5 is rotatably located in the middle of the device housing 1 via a drive gear shaft 502. One of the drive gear shafts 502 passes through the device housing 1 and is connected to a drive nut 501. The drive nut 501 is located on the outside of the device housing 1. By rotating the drive nut 501 on the drive gear 5, the drive gear shaft 502 rotates inside the device housing 1. As the drive gear 5 rotates, the drive racks 4 on the upper detection plate 2 and the lower detection plate 3 mesh with the drive gear 5, and the upper detection plate 2 and the lower detection plate 3 will move in opposite directions. The upper detection plate 2 and the lower detection plate 3 will protrude out of the device housing 1, thereby expanding the detection range.

[0039] Several evenly distributed detection antennas 9 are fixedly installed on the lower side of both the upper detection plate 2 and the lower detection plate 3. A through slot 303 corresponding to the detection antennas 9 on the upper detection plate 2 is opened on the lower detection plate 3.

[0040] The bottom side of the lower detection plate 3 and the bottom side of the upper detection plate 2 are both equipped with detection antennas 9. The detection antennas 9 on the bottom side of the upper detection plate 2 will not be blocked as the lower detection plate 3 is moved away. At the same time, the power switch can also be directly detected through the through slot 303 on the lower detection plate 3, which improves the flexibility of the device and the detection range.

[0041] Each of the upper detection plate 2 and the lower detection plate 3 has a rotatable support foot 7 at one corresponding end. When the support foot 7 is lowered, it supports the device housing 1, preventing direct contact with the switching power supply. The structure is simple, easy to store later, and improves ease of use. Specifically:

[0042] A support foot connecting block 704 is fixedly installed on the support foot 7. The support foot connecting block 704 is fixedly connected to the support foot pivot 705. A telescopic plate housing 701 is fixedly installed below the support foot pivot 705. A telescopic rod inner rod 702 is slidably installed inside the telescopic plate housing 701. An anti-slip pad 703 is fixedly installed at the bottom of the telescopic rod inner rod 702. The upper detection plate 2 and the lower detection plate 3 move in opposite directions. An upper support foot support plate 201 is opened at one end of the upper detection plate 2. An upper support foot rotating groove 202 is fixedly installed at one end of the upper support foot support plate 201. A lower support foot support plate 301 is opened at one end of the lower detection plate 3. A lower support foot rotating groove 302 is fixedly installed on the lower support foot support plate 301.

[0043] The support foot 7 is rotatably mounted inside the upper support foot support plate 201 or the lower support foot support plate 301 via the support foot pivot 705. When the support foot 7 is rotated downward, it can support the device housing 1. During the rotation, the support foot pivot 705 on the support foot connecting block 704 rotates in the upper support foot slot 202, and the support foot connecting block 704 rotates in the upper support foot support plate 201. At the same time, the telescopic rod 702 inside the telescopic plate housing 701 can be pulled down according to the height of the power switch to extend the support foot 7, thereby improving the range of use and flexibility of the device.

[0044] Meanwhile, a first magnet 10 is fixedly installed on the bottom side of the lower detection plate 3, and the first magnet 10 corresponds to the support foot 7 on the lower detection plate 3. A second magnet 11 is fixedly installed on the upper side of the upper detection plate 2, and the second magnet 11 corresponds to the support foot 7 on the upper detection plate 2. When not in use, the inner rod 702 of the telescopic rod is retracted into the interior of the telescopic plate housing 701, and then the support foot 7 is rotated in the opposite direction. After rotation, the support foot 7 on the upper detection plate 2 is attracted by the second magnet 11 on the upper detection plate 2, which fixes the support foot 7. After rotation, the support foot 7 on the lower detection plate 3 is attracted by the first magnet 10 and fixed, which improves the stability of the support foot 7 and facilitates the storage of the device housing 1.

[0045] After folding, a housing handle 8 is fixedly installed on the upper side of the device housing 1. The housing handle 8 is equipped with an anti-slip sleeve, which can be used to carry the device housing 1, thus improving the convenience of use.

[0046] Furthermore, such as Figure 2 and Figure 4 As shown, sliders 6 are fixedly installed on both sides of the upper detection plate 2 and the lower detection plate 3. A cylindrical slider head 601 is fixedly installed on the slider 6. The inner side of the device housing 1 is provided with a detection plate groove 101 corresponding to the slider 6. The slider 6 is slidably connected to the detection plate groove 101.

[0047] While the upper detection plate 2 and the lower detection plate 3 slide relative to each other, the sliders 6 on the upper detection plate 2 and the lower detection plate 3 slide in the detection plate grooves 101 inside the device housing 1, ensuring the stability of the sliding of the upper detection plate 2 and the lower detection plate 3.

[0048] Meanwhile, a fixing plate 102 is fixedly installed at both ends of the device housing 1. A third magnet 12 is fixedly installed on the outer side of one of the fixing plates 102. The third magnet 12 corresponds to the support foot 7. When the support foot 7 rotates downward, the support foot 7 and the third magnet 12 on the device housing 1 are attracted by the magnetism, which improves the stability of 7.

[0049] like Figures 1-6 As shown, the testing method of the switching power supply electromagnetic compatibility radiated interference testing device provided in this embodiment includes the following steps:

[0050] Step 1: Rotate the drive nut 501 on the drive gear 5 on the device housing 1 according to the width of the power switch, so that the upper detection plate 2 and the lower detection plate 3 slide relative to each other to expand the detection range;

[0051] Step 2: Then rotate the support foot 7 on the upper detection plate 2 downward from the upper side of the upper detection plate 2, and rotate the support foot 7 on the lower detection plate 3 downward to support the device housing 1;

[0052] Step 3: Adjust the height of the two support feet 7 so that the device housing 1 is suspended above the power supply.

[0053] Step 4: Activate the detection antennas 9 on the upper detection board 2 and the lower detection board 3 to test the switching power supply;

[0054] Step 5: After use, push the inner rod 702 of the telescopic rod on the support foot 7 into the inside of the telescopic plate outer shell 701 and make it fit with the first magnet 10 or the second magnet 11. Then rotate the drive gear 5 in the opposite direction.

[0055] If certain terms are used in the specification and claims to refer to specific components, those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" as used throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.

[0056] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes that element.

[0057] The foregoing description illustrates and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A switching power supply electromagnetic compatibility radiated interference testing device, comprising a device housing (1), characterized in that, The device housing (1) is rotatably equipped with a drive gear (5). An upper detection plate (2) is slidably mounted on the upper side of the drive gear (5), and a lower detection plate (3) is slidably mounted on the lower side of the drive gear (5). A drive rack (4) is fixedly mounted on the lower side of the upper detection plate (2) and the upper side of the lower detection plate (3). The drive rack (4) meshes with the drive gear (5). The drive gear (5) is used to push the upper detection plate (2) and the lower detection plate (3) left and right. The lower side of the upper detection plate (2) and the lower side of the lower detection plate (3) are both fixedly provided with a number of evenly distributed detection antennas (9), and the lower detection plate (3) is provided with a through slot (303) corresponding to the detection antennas (9) on the upper detection plate (2). The upper detection plate (2) and the lower detection plate (3) are each provided with a support foot (7) at one end.

2. The switching power supply electromagnetic compatibility radiated interference testing device according to claim 1, characterized in that: The drive gear (5) is rotatably disposed in the middle of the device housing (1) via a drive gear shaft (502), one of the drive gear shafts (502) passing through the device housing (1) and connected to a drive nut (501), the drive nut (501) being disposed on the outside of the device housing (1).

3. The switching power supply electromagnetic compatibility radiated interference testing device according to claim 2, characterized in that: The upper detection plate (2) moves in the opposite direction to the lower detection plate (3). One end of the upper detection plate (2) is provided with an upper support foot support plate (201), and one end of the upper support foot support plate (201) is fixedly provided with an upper support foot rotating groove (202). The lower detection plate (3) has a lower support foot support plate (301) at one end, and a lower support foot rotating groove (302) is fixedly provided on the lower support foot support plate (301). The support foot (7) is rotatably disposed inside the upper support foot support plate (201) or the lower support foot support plate (301) via the support foot pivot (705).

4. The switching power supply electromagnetic compatibility radiated interference testing device according to claim 3, characterized in that: A support foot connecting block (704) is fixedly installed on the support foot (7). The support foot connecting block (704) is fixedly connected to the support foot pivot (705). A telescopic plate shell (701) is fixedly installed below the support foot pivot (705). A telescopic rod inner rod (702) is slidably installed inside the telescopic plate shell (701). An anti-slip pad (703) is fixedly installed at the bottom of the telescopic rod inner rod (702).

5. The switching power supply electromagnetic compatibility radiated interference testing device according to claim 4, characterized in that: Both sides of the upper detection plate (2) and the lower detection plate (3) are fixedly provided with sliders (6), and a cylindrical slider (601) is fixedly provided on the slider (6). The inner side of the device housing (1) is provided with a detection plate groove (101) corresponding to the slider (6), and the slider (6) is slidably connected to the detection plate groove (101).

6. The switching power supply electromagnetic compatibility radiated interference testing device according to claim 5, characterized in that: Both ends of the device housing (1) are fixedly provided with fixing plates (102), and a third magnet (12) is fixedly provided on the outer side of one of the fixing plates (102), and the third magnet (12) corresponds to the support foot (7).

7. The switching power supply electromagnetic compatibility radiated interference testing device according to claim 6, characterized in that: A first magnet (10) is fixedly provided on the bottom side of the lower detection plate (3), and the first magnet (10) corresponds to the support foot (7) on the lower detection plate (3).

8. The switching power supply electromagnetic compatibility radiated interference testing device according to claim 7, characterized in that: A second magnet (11) is fixedly provided on the upper side of the upper detection plate (2), and the second magnet (11) corresponds to the support foot (7) on the upper detection plate (2).

9. The switching power supply electromagnetic compatibility radiated interference testing device according to claim 8, characterized in that: A housing handle (8) is fixedly provided on the upper side of the housing (1) of the device, and an anti-slip sleeve is provided on the housing handle (8).

10. A test method for the switching power supply electromagnetic compatibility radiated interference test device as described in claim 9, characterized in that: Includes the following steps: Step 1: Rotate the drive nut (501) on the drive gear (5) on the housing (1) of the power switch according to the width of the power switch, so that the upper detection plate (2) and the lower detection plate (3) slide relative to each other to expand the detection range; Step 2: Then rotate the support foot (7) on the upper detection plate (2) downward from the upper side of the upper detection plate (2), and rotate the support foot (7) on the lower detection plate (3) downward to support the device housing (1); Step 3: Adjust the height of the two support feet (7) so that the device housing (1) is suspended above the switching power supply; Step 4: Activate the detection antennas (9) on the upper detection board (2) and lower detection board (3) to test the switching power supply; Step 5: After use, push the inner rod (702) of the telescopic rod on the support foot (7) into the inside of the telescopic plate shell (701) and make it fit with the first magnet (10) or the second magnet (11), and rotate the drive gear (5) in the opposite direction.

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