Reflection measuring device for wave-absorbing material

Abstract

The utility model discloses a reflection measuring device for a wave-absorbing material, which belongs to the technical field of wave-absorbing material detection and comprises a bottom plate, a background wave-absorbing material and a placing table, a rotating component is arranged between the bottom of the placing table and the top of the bottom plate, two groups of adjusting columns are mounted at two ends of the top of the placing table, and the adjusting columns are connected with the background wave-absorbing material. A pressing plate is arranged on one side of the adjusting column, an adjusting mechanism is arranged between one end of the pressing plate and one side of the adjusting column, and a measuring assembly is arranged above the bottom plate; according to the utility model, through the cooperative use of the placing table, the adjusting column, the pressing plate and the adjusting mechanism, a wave-absorbing material needing reflection measurement can be fixed at the top of the placing table, so that the position of a tested material sample is ensured to be strictly aligned with the axis of a test antenna, and the error of a reflection path caused by sample deviation is avoided; phase sensitive measurement is prevented from being influenced after micro displacement of the sample, and the precision and accuracy of measurement are improved.

Description

Technical Field

[0001] This utility model relates to the field of microwave absorbing material testing technology, specifically a reflection measuring device for microwave absorbing materials. Background Technology

[0002] With the development of electronic technology, electronic products are rapidly evolving towards greater intelligence, information technology, and multifunctionality. These electronic devices radiate a large amount of electromagnetic waves into space during operation, leading to electromagnetic interference. To reduce electromagnetic interference and achieve electromagnetic compatibility, conductive materials are currently used for electromagnetic shielding. However, because these materials reflect electromagnetic waves, they may cause secondary electromagnetic shielding radiation and interference to electronic devices. For this situation, absorbing materials are needed. In-depth research on absorbing materials requires finding a method to accurately measure their absorption performance. Commonly used methods for testing the reflectivity of absorbing materials include the RAM reflectivity bow test method, which is a primary method recommended both domestically and internationally. The bow test method primarily uses a bow-shaped testing device for measurement.

[0003] Chinese Patent Publication No. CN212872251U discloses a device for measuring the reflectivity of absorbing materials. The device includes a sample holder, an arc-shaped frame, and a transmitting antenna and a receiving antenna that are slidably mounted on the arc-shaped frame. The transmitting antenna is used to transmit electromagnetic waves, and the receiving antenna is used to receive electromagnetic waves. The sample holder includes a support plate and a support base, which are detachably connected. The support plate can move relative to the support base along the height direction of the support base. The support plate is used to hold the absorbing material.

[0004] The reflectivity measurement device for absorbing materials mentioned in the above patent still has some obvious shortcomings in actual use. The device is not convenient for fixing the absorbing material. Therefore, we need to propose a reflectivity measurement device for absorbing materials. Utility Model Content

[0005] The purpose of this invention is to provide a reflection measuring device for absorbing materials, which has a structure for fixing the absorbing material, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a reflection measuring device for absorbing materials, comprising a base plate, a background absorbing material disposed on the top of the base plate, a placement platform disposed on the top of the base plate and above the background absorbing material, a rotating assembly for controlling the rotation of the placement platform disposed between the bottom of the placement platform and the top of the base plate, two sets of adjusting columns installed at both ends of the top of the placement platform, a pressure plate disposed on one side of the adjusting column, an adjusting mechanism disposed between one end of the pressure plate and one side of the adjusting column, and one end of the pressure plate connected to one side of the adjusting column through the adjusting mechanism, and a measuring assembly for measuring the reflection of the absorbing material disposed above the base plate.

[0007] Preferably, the adjusting mechanism includes an adjusting groove formed on one side of the adjusting column, the interior of the adjusting groove being adapted to one end of the pressure plate, an adjusting rod being connected to the upper end of the adjusting groove and the upper end of the adjusting column, and the bottom end of the adjusting rod being connected to one end of the top of the pressure plate.

[0008] Preferably, a telescopic spring is provided on the surface of the adjusting rod and inside the adjusting groove. One end of the telescopic spring is fixedly installed on the inner wall of one end of the adjusting groove, and the other end of the telescopic spring is connected to one end of the top of the pressure plate.

[0009] Preferably, the rotating assembly includes a support column fixedly installed on the top of the base plate, a drive motor is provided inside the support column, a rotating seat is rotatably connected to the top of the support column, the top of the rotating seat is fixedly connected to the top of the placement platform, and the output end of the drive motor passes through the support column and extends to the top of the support column and connects to the bottom of the rotating seat.

[0010] Preferably, the measuring component includes an arc-shaped frame disposed above the background absorbing material, with two sets of lifting columns connected to the bottom of both ends of the arc-shaped frame. The bottom of the lifting columns is fixedly installed on the top of the base plate. Two sets of mounting blocks are provided on the surface of the arc-shaped frame, and a disassembly and assembly mechanism is provided between the mounting blocks and the surface of the arc-shaped frame. A transmitting antenna and a receiving antenna are respectively provided on one side of each of the two sets of mounting blocks.

[0011] Preferably, the disassembly and assembly mechanism includes mounting holes uniformly formed through the surface of the bow-shaped frame and a mounting rod located on one side of the mounting block, with one end of the mounting rod threaded through the mounting block and connected to the inner cavity of the mounting hole.

[0012] Preferably, a connecting hole is provided through one side of the mounting block, the interior of the connecting hole is adapted to the mounting rod, and one end of the mounting rod is inserted into the inner cavity of the connecting hole.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This invention utilizes a placement platform, an adjusting column, a pressure plate, and an adjusting mechanism. The adjusting mechanism controls the pressure plate to move up and down on one side of the adjusting column, thereby fixing the absorbing material to be measured on the top of the placement platform. This ensures that the position of the material sample is strictly aligned with the axis of the test antenna, avoiding errors in the reflection path caused by sample offset, preventing micro-displacement of the sample from affecting phase-sensitive measurements, and improving the accuracy and precision of the measurement.

[0015] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained through the structures pointed out in the description and the accompanying drawings. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the bow-shaped frame of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the mounting block of this utility model;

[0019] Figure 4 This is a schematic diagram of the rotating base of this utility model.

[0020] In the diagram: 1. Base plate; 2. Background absorbing material; 3. Placement platform; 4. Adjustment column; 5. Pressure plate; 6. Adjustment groove; 7. Adjustment rod; 8. Telescopic spring; 9. Support column; 10. Drive motor; 11. Rotating seat; 12. Bow-shaped frame; 13. Lifting column; 14. Mounting block; 15. Transmitting antenna; 16. Receiving antenna; 17. Mounting hole; 18. Mounting rod; 19. Connection hole. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4This utility model provides a technical solution: a reflection measuring device for absorbing materials, including a base plate 1, a background absorbing material 2, a placement platform 3, a rotating assembly, an adjusting column 4, a pressure plate 5, an adjusting mechanism, and a measuring assembly.

[0023] Preferably, a background absorbing material 2 is provided on the top of the base plate 1, and a placement platform 3 is provided on the top of the base plate 1 and above the background absorbing material 2. A rotating component for controlling the rotation of the placement platform 3 is provided between the bottom of the placement platform 3 and the top of the base plate 1. Two sets of adjusting columns 4 are installed at both ends of the top of the placement platform 3. A pressure plate 5 is provided on one side of the adjusting column 4. An adjusting mechanism is provided between one end of the pressure plate 5 and one side of the adjusting column 4, and one end of the pressure plate 5 is connected to one side of the adjusting column 4 through the adjusting mechanism. A measuring component for measuring the reflection of the absorbing material is provided on the top of the base plate 1.

[0024] Specifically, by using the placement platform 3, adjusting column 4, pressure plate 5 and adjusting mechanism together, the adjusting mechanism controls the pressure plate 5 to move up and down on one side of the adjusting column 4, thereby fixing the absorbing material to be reflected and measured on the top of the placement platform 3. This ensures that the position of the material sample under test is strictly aligned with the axis of the test antenna, avoiding errors in the reflection path caused by sample offset, preventing the micro-displacement of the sample from affecting the phase-sensitive measurement, and improving the accuracy and precision of the measurement.

[0025] Preferably, the adjustment mechanism includes: an adjustment groove 6, an adjustment rod 7, and a telescopic spring 8. The adjustment groove 6 is located on one side of the adjustment column 4, and the interior of the adjustment groove 6 is adapted to one end of the pressure plate 5. The upper end of the adjustment groove 6 and the upper end of the adjustment column 4 are connected to the adjustment rod 7. The bottom end of the adjustment rod 7 is connected to one end of the top of the pressure plate 5. The surface of the adjustment rod 7 and the interior of the adjustment groove 6 are provided with a telescopic spring 8. One end of the telescopic spring 8 is fixedly installed on the inner wall of one end of the adjustment groove 6, and the other end of the telescopic spring 8 is connected to one end of the top of the pressure plate 5. This facilitates the fixing of the absorbing material to be measured and allows the device to measure materials of different thicknesses.

[0026] Preferably, the rotating assembly includes a support column 9, a drive motor 10, and a rotating seat 11. The support column 9 is fixedly installed on the top of the base plate 1. The drive motor 10 is installed inside the support column 9. The rotating seat 11 is rotatably connected to the top of the support column 9. The top of the rotating seat 11 is fixedly connected to the top of the placement platform 3. The output end of the drive motor 10 passes through the support column 9 and extends to the top of the support column 9 and connects to the bottom of the rotating seat 11. The absorbing material can be tested from different directions without the need for manual rotation of the test material, which effectively improves the testing efficiency.

[0027] Preferably, the measuring components include: an arc-shaped frame 12, lifting columns 13, mounting blocks 14, a transmitting antenna 15, and a receiving antenna 16. The arc-shaped frame 12 is positioned above the background absorbing material 2. Two sets of lifting columns 13 are connected to the bottom of both ends of the arc-shaped frame 12. The bottom of the lifting columns 13 is fixedly installed on the top of the base plate 1. Two sets of mounting blocks 14 are provided on the surface of the arc-shaped frame 12. A disassembly and assembly mechanism is provided between the mounting blocks 14 and the surface of the arc-shaped frame 12. The transmitting antenna 15 and the receiving antenna 16 are respectively provided on one side of the two sets of mounting blocks 14.

[0028] Preferably, the disassembly and assembly mechanism includes: mounting holes 17, mounting rods 18, and connecting holes 19. The mounting holes 17 are evenly distributed throughout the surface of the bow-shaped frame 12. The mounting rods 18 are located on one side of the mounting block 14. One end of the mounting rods 18 passes through the mounting block 14 and is threaded into the inner cavity of the mounting holes 17. A connecting hole 19 is provided through one side of the mounting block 14. The interior of the connecting hole 19 is adapted to the mounting rods 18, and one end of the mounting rods 18 is inserted into the inner cavity of the connecting hole 19. This allows the transmitting antenna 15 and the receiving antenna 16 to be fixed to the surface of the bow-shaped frame 12, facilitating their installation or disassembly, maintenance, and replacement, and ensuring the accuracy of the measurements of the absorbing material by the transmitting antenna 15 and the receiving antenna 16.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A reflection measuring device for absorbing materials, characterized in that: The system includes a base plate (1), a background absorbing material (2) is provided on the top of the base plate (1), a placement platform (3) is provided on the top of the base plate (1) and above the background absorbing material (2), a rotating component for controlling the rotation of the placement platform (3) is provided between the bottom of the placement platform (3) and the top of the base plate (1), two sets of adjusting columns (4) are installed at both ends of the top of the placement platform (3), a pressure plate (5) is provided on one side of the adjusting column (4), an adjusting mechanism is provided between one end of the pressure plate (5) and one side of the adjusting column (4), and one end of the pressure plate (5) is connected to one side of the adjusting column (4) through the adjusting mechanism. A measuring component for measuring the reflection of the absorbing material is provided above the base plate (1).

2. The reflection measuring device for absorbing materials according to claim 1, characterized in that: The adjustment mechanism includes an adjustment groove (6) opened on one side of the adjustment column (4). The interior of the adjustment groove (6) is adapted to one end of the pressure plate (5). An adjustment rod (7) is connected to the upper end of the adjustment groove (6) and the upper end of the adjustment column (4). The bottom end of the adjustment rod (7) is connected to one end of the top of the pressure plate (5).

3. The reflection measuring device for absorbing materials according to claim 2, characterized in that: A telescopic spring (8) is provided on the surface of the adjusting rod (7) and inside the adjusting groove (6). One end of the telescopic spring (8) is fixedly installed on the inner wall of one end of the adjusting groove (6), and the other end of the telescopic spring (8) is connected to one end of the top of the pressure plate (5).

4. The reflection measuring device for absorbing materials according to claim 1, characterized in that: The rotating assembly includes a support column (9) fixedly installed on the top of the base plate (1). A drive motor (10) is provided inside the support column (9). A rotating seat (11) is rotatably connected to the top of the support column (9). The top of the rotating seat (11) is fixedly connected to the top of the placement platform (3). The output end of the drive motor (10) passes through the support column (9) and extends to the top of the support column (9) and connects to the bottom of the rotating seat (11).

5. The reflection measuring device for absorbing materials according to claim 1, characterized in that: The measuring component includes an arc-shaped frame (12) disposed above the background absorbing material (2). Two sets of lifting columns (13) are connected to the bottom of both ends of the arc-shaped frame (12). The bottom of the lifting columns (13) is fixedly installed on the top of the base plate (1). Two sets of mounting blocks (14) are provided on the surface of the arc-shaped frame (12). A disassembly and assembly mechanism is provided between the mounting blocks (14) and the surface of the arc-shaped frame (12). A transmitting antenna (15) and a receiving antenna (16) are respectively provided on one side of the two sets of mounting blocks (14).

6. The reflection measuring device for absorbing materials according to claim 5, characterized in that: The disassembly and assembly mechanism includes mounting holes (17) evenly opened through the surface of the bow-shaped frame (12) and mounting rods (18) provided on one side of the mounting block (14). One end of the mounting rod (18) passes through the mounting block (14) and is threadedly connected to the inner cavity of the mounting hole (17).

7. The reflection measuring device for absorbing materials according to claim 6, characterized in that: A connecting hole (19) is provided through one side of the mounting block (14). The interior of the connecting hole (19) is adapted to the mounting rod (18), and one end of the mounting rod (18) is inserted into the inner cavity of the connecting hole (19).

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