Microwave darkroom test system

Abstract

The invention relates to the technical field of communication testing, in particular to a microwave anechoic chamber testing system which comprises a detection box, a wave absorbing material and a testing antenna, the top end of the detection box is provided with a top cover in an up-down adjustable mode through a linear driving piece, a supporting partition plate is horizontally arranged in the detection box, and the testing antenna is installed in the middle of the top end of the supporting partition plate. A plurality of placing seats for placing test terminals are arranged at the top end of the supporting partition plate, the distances between the placing seats and the test antenna are equal, a plurality of movable plates in one-to-one correspondence with the placing seats are movably arranged at the bottom end of the supporting partition plate, a driving seat is arranged under the test antenna, and the driving seat is fixedly connected with the top cover through a plurality of connecting rods; the driving seat is connected with each movable plate through a driving structure and is used for synchronously pushing the plurality of movable plates to move towards one side close to or away from the test antenna, a plurality of test terminals can be tested at the same time, a worker can quickly take and place the test terminals, and the test efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of communication test, in particular to a microwave anechoic chamber test system. BACKGROUND

[0002] With the development of wireless communication, more and more wireless frequency bands are used for military or commercial purposes, and it is difficult to find an ideal measurement site without electromagnetic interference. The antenna test method in the microwave anechoic chamber is more and more adopted and becomes the current mainstream scheme. The microwave anechoic chamber, also known as the non-reflective chamber, uses wave-absorbing materials that can absorb electromagnetic waves to pave the inner wall of the room to simulate a free space without environmental reflection and is widely used in research projects for military and civilian purposes at home and abroad. At present, the market mainly aims at large scientific research institutions and complex industrialization needs. Research institutions such as NASA, Beihang University, and China Electronics Corporation, etc. have the characteristics of few users and high production scale requirements, and the cost is high. Therefore, a single group, small size, customized, and directional test are needed to complete the design and implementation of the corresponding test system control software to help enterprises achieve certain technical advancement in the competitive market.

[0003] The microwave anechoic chamber test system in the prior art can only test a single product at a time. When multiple products need to be tested, the microwave anechoic chamber needs to be frequently opened and closed, and the products need to be taken out and placed. The work efficiency is low. In the Chinese patent document, the patent with the application number 202120600568.2 discloses a microwave anechoic chamber. Multiple test end placing stations are installed in the shielding chamber, which can be used for batch testing of small household appliances. However, the microwave anechoic chamber generally has a large size, and the staff needs to enter the room to take and place the test end. However, the existing microwave anechoic chamber generally has wave-absorbing materials to reduce electromagnetic wave reflection. In order to facilitate the walking of the staff, additional support members need to be installed. In order to avoid the reflection of electromagnetic waves, the microwave anechoic chamber generally does not have metal parts. Non-metal parts may have poor firmness and are inconvenient to use. At the same time, the existing microwave anechoic chamber generally has a hinged door on the side wall. Since the door needs to be opened and closed, the wave-absorbing material is generally in the form of a wedge with a certain height. This may cause the height of the wave-absorbing material inside the door to be lower than that of the wave-absorbing material inside the microwave anechoic chamber, affecting the wave-absorbing effect. SUMMARY

[0004] The present application aims to provide a microwave anechoic chamber test system to solve the problems in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a microwave anechoic chamber testing system, comprising a testing box, absorbing material, and a testing antenna. The top of the testing box is vertically adjustable with a top cover via a linear drive mechanism. A horizontally arranged support partition is provided inside the testing box. The absorbing material is fixed to the inner perimeter wall, bottom, bottom of the top cover, and top of the support partition. The testing antenna is mounted in the middle of the top of the support partition, and the top of the support partition has several placement seats for placing testing terminals, with each placement seat equidistant from the testing antenna. The bottom of the support partition is movably provided with several movable plates corresponding one-to-one with the placement seat. The support partition is provided with clearance sliding holes corresponding one-to-one with the movable plates, and the top of the movable plate passes through the clearance sliding holes and is fixedly connected to the placement seat. A drive seat is provided directly below the test antenna, and the drive seat is fixedly connected to the top cover through several connecting rods, so that the drive seat and the top cover move up and down synchronously. The drive seat is connected to each movable plate through a drive structure, which is used to synchronously push the movable plates to move closer to or further away from the test antenna, and the distance between the placement seat and the test antenna is always equal.

[0006] Furthermore, a slot is provided at the top edge of the detection box, and a finger-shaped spring is fixed on the inner wall of the slot. An insertion part is provided at the edge of the top cover to insert into the inside of the slot, and the insertion part abuts against the finger-shaped spring.

[0007] Furthermore, the driving structure includes a fixed hinge seat fixed at the center of the bottom end of the supporting partition and a first driving rod and a second driving rod corresponding to a plurality of movable plates. The first driving rod and the second driving rod are rotatably connected in the middle. The two ends of the first driving rod are rotatably connected to the driving seat and the movable plate, respectively. One end of the second driving rod is rotatably connected to the fixed hinge seat, and the other end of the second driving rod is slidably connected to the movable plate through a connecting pin. Each movable plate is provided with a strip-shaped sliding hole for accommodating the connecting pin to move up and down along its length.

[0008] Furthermore, the placement seat includes a horizontal section that is horizontally slidably disposed at the top of the support partition and a vertical section that is vertically fixed at the top of the horizontal section on the side away from the test antenna.

[0009] Furthermore, the top of the support partition is provided with several limiting seats that correspond one-to-one with the placement seats, and the limiting seats include a clamping part that is parallel to and opposite to the vertical section and a supporting part for installation and fixing with the support partition. A gap is reserved between the bottom end of the clamping part and the support partition to accommodate the horizontal movement of the horizontal section.

[0010] Furthermore, a spacing adjustment structure is provided between the top end of the connecting rod and the top cover to adjust the distance between them.

[0011] Further, the spacing adjusting structure comprises a fixing base fixed at the top end of the connecting rod and a fixing rod fixed at the bottom end of the top cover, a rotating piece is rotationally arranged at the top end of the fixing base, the middle of the rotating piece is threadedly connected with the fixing rod, and a containing cavity for containing the fixing rod extending into the fixing base is arranged in the middle of the fixing base.

[0012] Further, the rotating piece is replaced by a baffle and a spring, the bottom end of the fixing rod extends into the containing cavity, the baffle is fixed at the bottom end of the fixing rod and can move up and down in the containing cavity, and the spring is arranged at the bottom end in the containing cavity.

[0013] Further, the connecting rod and the fixing base are both non-metal materials, and the outer sides of the connecting rod and the fixing base are both coated with wave-absorbing materials.

[0014] Further, the two straight-line driving pieces are vertically arranged on both sides of the detection box, and the output ends of the straight-line driving pieces are fixedly connected with both sides of the top cover.

[0015] Compared with the prior art, the microwave darkroom test system has the beneficial effects that: the microwave darkroom test system can simultaneously test multiple test ends by arranging multiple placing seats in the detection box and equalizing the spacing between the placing seats and the test antenna, thereby improving the test efficiency; the top cover is arranged to be opened and closed up and down at the top end of the detection box, which is convenient for operation, and wave-absorbing materials of a corresponding size can be arranged on the bottom end of the top cover and the inner side wall of the detection box, thereby reducing the reflection of electromagnetic waves and improving the test precision; meanwhile, the detection box is internally provided with a connecting rod, a driving base, a driving structure and a movable plate, the test antenna can be pushed to the edge of the detection box when the top cover is lifted to place the test end, in the case of using a larger test box, the test end can be quickly placed without the need for workers to enter the room, the use is more convenient and fast, and the use of electrical equipment can be reduced, thereby reducing the interference of electromagnetic waves. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a sectional view of the closing state of the present application; Figure 2 It is a sectional view of the closing state of the present application; Figure 1 It is an enlarged structure diagram of position A in the present application; Figure 3 It is a sectional view of the closing state of the present application; Figure 4 It is a sectional view of the closing state of the present application; Figure 5 It is a sectional view of the closing state of the present application; Figure 6 It is a sectional view of the closing state of the present application; Figure 5 It is an enlarged structure diagram of position B in the present application; Figure 7 It is a sectional view of the closing state of the present application; Figure 8 Fig. 2 is a schematic view of the driving structure in an expanded state according to the present application; Figure 9 Fig. 3 is a schematic view of the driving structure in a contracted state according to the present application; Figure 10 Fig. 4 is a schematic view of the intermediate distance adjusting structure according to the embodiment 2 of the present application.

[0017] In the figure: 1, detection box; 101, slot; 2, top cover; 201, plug-in part; 3, straight driving part; 4, wave-absorbing material; 5, supporting partition; 501, sliding hole; 6, test antenna; 7, placing seat; 701, horizontal section; 702, vertical section; 8, movable plate; 801, strip-shaped sliding hole; 9, connecting rod; 10, driving seat; 11, driving structure; 1101, fixed hinged seat; 1102, first driving rod; 1103, second driving rod; 1104, connecting pin shaft; 12, finger-shaped spring piece; 13, limiting seat; 1301, supporting part; 1302, clamping part; 14, distance adjusting structure; 1401, fixed seat; 1402, fixed rod; 1403, rotating part; 1404, accommodating cavity; 1405, baffle; 1406, spring; 15, test terminal. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. It should be noted that, in the description of the present application, the terms “first”, “second”, and the like are merely used for the purpose of description and do not particularly indicate the order or sequence, nor do they limit the present application. They are merely used to distinguish components or operations described by the same technical terms, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features with “first” and “second” can explicitly or implicitly include at least one of the features. The terms “include” and any variations thereof in the description, claims, and above drawings of the present application are intended to cover non-exclusive inclusion.

[0019] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "setting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In addition, in the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside" and the like indicate the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present application.

[0020] Embodiment 1, please refer to Figures 1-9 The present application provides an embodiment: a microwave darkroom test system, comprising a detection box 1, a wave-absorbing material 4 and a test antenna 6, the test antenna 6 and the specific test process are prior art, which will not be repeated here. The top of the detection box 1 is provided with a top cover 2 which is adjustable up and down through a linear drive 3. Specifically, the detection box 1 is a rectangular structure made of metal, the cross section is a square, the top end is provided with an opening for taking and placing a test terminal 15, the top cover 2 is also made of metal, when it is closed on the top end of the detection box 1, it can form a closed shielding space. In the present embodiment, the linear drive 3 can be any one of air cylinder, electric telescopic rod, etc., two of which are vertically installed on both sides of the detection box 1, and the output ends of the linear drives 3 are respectively fixedly connected with both sides of the top cover 2. By the extension and retraction of the linear drive 3, the top cover 2 is separated from the detection box 1 to take and place the test terminal 15, or to cover the top end of the detection box 1 for electromagnetic shielding.

[0021] In order to ensure that the top cover 2 is tightly attached to the detection box 1, a slot 101 is arranged at the top end edge of the detection box 1, and a finger-shaped spring piece 12 is fixed on the inner side wall of the slot 101, and the edge of the top cover 2 is provided with a plug-in part 201 inserted into the inner side of the slot 101, and the plug-in part 201 abuts against the finger-shaped spring piece 12, so that a reliable electrical connection is established between the top cover 2 and the detection box 1, ensuring that the entire structure forms a continuous conductive path, thereby forming a complete Faraday cage structure, which can effectively block external electromagnetic waves from entering the inside of the detection box 1, and also prevent the leakage of internal electromagnetic waves to the outside, avoid the influence of external electromagnetic interference on the internal equipment, ensure the accuracy of the test result and the stability of the equipment operation, and also prevent the electromagnetic waves of the internal equipment from interfering with the surrounding environment and other equipment. In the embodiment, in order to improve the sealing performance, a sealing gasket can also be arranged on the contact surface between the plug-in part 201 and the slot 101 to improve the sealing performance after the cover is closed.

[0022] A support partition plate 5 is horizontally arranged inside the detection box 1, and the support partition plate 5 is made of non-metal material, the test antenna 6 is installed at the top end of the middle of the support partition plate 5, and four placing seats 7 for placing test terminals 15 are arranged at the top end of the support partition plate 5, corresponding to the four side walls of the detection box 1, and other numbers can also be arranged according to the needs, the distance between the placing seats 7 and the test antenna 6 is equal, and a plurality of long strip-shaped movable plates 8 corresponding to the placing seats 7 are movably arranged at the bottom end of the support partition plate 5, a plurality of give-way sliding holes 501 corresponding to the movable plates 8 are arranged on the support partition plate 5, the top end of the movable plate 8 penetrates through the give-way sliding hole 501 and is fixedly connected with the placing seat 7, the give-way sliding holes 501 are distributed in a radial manner with the test antenna 6 as the center, a driving seat 10 is arranged directly below the test antenna 6, and the driving seat 10 is fixedly connected with the top cover 2 through four connecting rods 9, so that the driving seat 10 moves up and down synchronously with the top cover 2, the four connecting rods 9 are arranged in a staggered manner with the placing seats 7 to reduce the influence on the test, the test antenna 6 is arranged in the middle of the four connecting rods 9, and the driving seat 10 is connected with each movable plate 8 through a driving structure 11, for synchronously pushing the plurality of movable plates 8 to move to one side close to or away from the test antenna 6, and the distance between the placing seat 7 and the test antenna 6 is always equal.

[0023] Reference is made to the accompanying Figures 7-9The driving structure 11 comprises a fixed hinge seat 1101 fixed at the center of the bottom end of the support partition 5 and a first driving rod 1102 and a second driving rod 1103 corresponding to the movable plates 8, the middle part of the first driving rod 1102 and the second driving rod 1103 are rotationally connected, the two ends of the first driving rod 1102 are rotationally connected with the driving seat 10 and the movable plate 8 through a pin shaft respectively, one end of the second driving rod 1103 is rotationally connected with the fixed hinge seat 1101 through a pin shaft, and the other end of the second driving rod 1103 is slidingly connected with the movable plate 8 through a connecting pin shaft 1104, the movable plate 8 is provided with a strip-shaped sliding hole 801 for accommodating the connecting pin shaft 1104 to move up and down along the length direction, the fixed hinge seat 1101 is provided with a through hole for accommodating the connecting rod 9 to move up and down, in use, the fixed hinge seat 1101 is fixed at the bottom end of the support partition 5, when the driving seat 10 is lifted and lowered synchronously with the top cover 2 through the connecting rod 9, the four groups of first driving rods 1102 and second driving rods 1103 respectively push the four movable plates 8 to move back and forth along the length direction of the accommodation sliding hole 501, that is, when the top cover 2 is lifted to be opened, the movable plate 8 and the placing seat 7 move to the inside edge of the detection box 1, at this time, the staff can conveniently place the test terminal 15 on the placing seat 7 without entering the inside of the detection box, when the top cover 2 is lowered to be closed, the movable plate 8 and the placing seat 7 move to the inside center of the detection box 1 for testing, without setting electrical elements in the inside of the detection box 1, the position of the multiple test terminals 15 can be quickly adjusted, the influence of the electromagnetic signals of the electrical elements on the test result is reduced, since the detection box 1 generally has a large size, the staff also does not need to enter the inside of the detection box 1 to take or place the test terminal 15, and the use is more convenient.

[0024] The specific structure of the wave-absorbing material 4 is a prior art, which is generally used to absorb or greatly weaken the electromagnetic wave energy projected to its surface, so as to reduce electromagnetic wave interference, in the embodiment, the wave-absorbing material 4 is in the shape of a sharp wedge, which is mainly composed of polyurethane foam type, non-woven fabric flame-retardant type, silicate plate metal film assembly type and the like, and is fixed at the inner circumferential wall, the bottom end of the detection box 1, the bottom end of the top cover 2 and the top end of the support partition 5, and the sizes of the wave-absorbing materials 4 are the same, since the wave-absorbing property of the wave-absorbing material 4 is related to its shape, by setting the top cover 2 in the form of straight up and straight down, the wave-absorbing material 4 on the inner side wall of the top cover 2 and the material on the inner side wall of the detection box 1 can be set in the same structure, and the wave-absorbing effect is better.

[0025] Reference is made to the accompanying drawings Figure 2The placing seat 7 comprises a horizontal section 701 horizontally slidingly arranged at the top end of the support partition 5 and a vertical section 702 vertically fixed at the top end of the horizontal section 701 away from the test antenna 6, in order to avoid the test terminal 15 sliding back and forth along the width direction of the horizontal section 701, limiting protrusions (not shown in the figure) can also be arranged at both sides of the width of the horizontal section 701, the top end of the support partition 5 is provided with a plurality of limiting seats 13 corresponding to the placing seat 7 one by one, and the limiting seat 13 comprises a clamping part 1302 opposite to the vertical section 702 and a supporting part 1301 for mounting and fixing with the support partition 5, a gap for accommodating the horizontal movement of the horizontal section 701 is reserved between the bottom end of the clamping part 1302 and the support partition 5, which facilitates the sliding of the clamping part 1302 on the horizontal section 701, and then adjusts the distance between the vertical section 702 and the clamping part 1302, and the placing seat 7 and the limiting seat 13 are also made of non-metal materials to reduce the reflection of electromagnetic waves. Due to the size problem of the detection box 1, the test terminal 15 can only be easily placed at the top end of the horizontal section 701, but it is not convenient to fix it, in order to avoid the distance between the test terminal 15 and the test antenna 6 not being equal when the test terminal 15 moves to the final position, the limiting seat 13 is arranged at the top end of the support partition 5, the clamping part 1302 and the vertical section 702 cooperate with each other to clamp and fix the test terminal 15 in the middle, without manual operation, which is convenient and labor-saving, and without the need to set up electrical components for fixing, reducing electromagnetic interference and improving test accuracy.

[0026] In some embodiments, due to the size problem of the test terminal 15, after the top cover 2 is lowered into place, the placing seat 7 cannot abut the test terminal 15 on the limiting seat 13, or the distance between the placing seat 7 and the limiting seat 13 is too small, causing the test terminal 15 to be crushed, referring to the accompanying drawings Figures 6-7 In the embodiment, the distance adjusting structure 14 for adjusting the distance between the top end of the connecting rod 9 and the top cover 2 is arranged between them, the distance adjusting structure 14 comprises a fixed seat 1401 fixed at the top end of the connecting rod 9 and a fixed rod 1402 fixed at the bottom end of the top cover 2, an external thread is arranged on the outer side of the fixed rod 1402 along the length direction, a rotating piece 1403 is rotationally arranged at the top end of the fixed seat 1401 through an annular limiting sliding groove, the middle of the rotating piece 1403 is threadedly connected with the fixed rod 1402, a receiving cavity 1404 is arranged in the middle of the fixed seat 1401 for accommodating the fixed rod 1402 extending into the interior, the bottom end of the fixed rod 1402 enters the interior of the receiving cavity 1404 after penetrating through the rotating piece 1403, by rotating the rotating piece 1403, the length of the fixed rod 1402 inserted into the interior of the receiving cavity 1404 can be adjusted, and then the position of the placing seat 7 finally fixed can be adjusted to adapt to the clamping and fixing of test terminals 15 of different sizes.

[0027] In this embodiment, the connecting rod 9 and the fixing seat 1401 are both non-metal materials, and the outer sides of the connecting rod 9 and the fixing seat 1401 are both covered with wave-absorbing material 4, further reducing the reflection of electromagnetic waves and improving the test accuracy.

[0028] In some embodiments, the connecting rod 9 can also be directly fixed to the bottom end of the top cover 2.

[0029] Working principle: by extending the linear drive 3, the top cover 2 is pushed upwards to separate from the top end of the detection box 1, at the same time, the top cover 2 drives the driving seat 10 to move upwards synchronously through the connecting rod 9, the driving seat 10 drives the bottom end of the first driving rod 1102 to move upwards, and then pushes the first driving rod 1102 and the second driving rod 1103 to rotate around the center pin shaft, pushes the movable plate 8 on one side to move to the edge of the detection box 1, and then drives the placement seat 7 to move to the edge of the detection box 1, at this time, the test terminal 15 is placed on the top end of the horizontal section 701 by the staff, the linear drive 3 is retracted, the top cover 2 and the driving seat 10 are synchronously lowered, the placement seat 7 is reversely moved, and the test terminal 15 is abutted on the inner side wall of the vertical section 702 by the clamping part 1302 to realize limiting, avoiding displacement of the test terminal 15, causing different distances between the test terminals 15 and the test antenna 6 to affect the test results, until the insertion part 201 is inserted into the insertion slot 101, the finger spring 12 abuts against the insertion part 201, and the detection box 1 is in a closed state, at the same time, the detection box 1 and the top cover 2 form a complete Faraday cage structure, with good shielding effect, and then the test can be started; When different sizes of test terminals 15 need to be tested, that is, when the top cover 2 is lowered into place, the test terminal 15 is just clamped between the vertical section 702 and the clamping part 1302, the rotating part 1403 needs to be rotated to drive the fixing seat 1401 to move upwards or downwards relative to the fixing rod 1402, and then the placement seat 7 is positioned at a different distance from the limiting seat 13 after the insertion part 201 is inserted into the insertion slot 101, suitable for fixing different sizes of test terminals 15.

[0030] Embodiment 2, please refer to Figure 10 , the difference between this embodiment and embodiment 1 is that the baffle 1405 and the spring 1406 replace the rotating part 1403, the bottom end of the fixing rod 1402 extends into the accommodating cavity 1404, the baffle 1405 is fixed to the bottom end of the fixing rod 1402 and can move up and down in the accommodating cavity 1404, the opening at the top end of the accommodating cavity 1404 is smaller than the size of the baffle 1405, avoiding the baffle 1405 from separating into the accommodating cavity 1404, and the spring 1406 is arranged at the bottom end in the accommodating cavity 1404, in actual operation, the depth of the fixing rod 1402 inserted into the accommodating cavity 1404 can be self-adaptively adjusted according to the size of the test terminal 15, and the use is more convenient.

[0031] It will be apparent to those skilled in the art that the application is not limited to the details of the above-exemplified embodiments and that the present application can be implemented in other particular forms without departing from the spirit or essential characteristics of the present application. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. No reference signs in the claims shall be construed as limiting the scope of the claims.

Claims

1. A microwave anechoic chamber testing system, comprising a testing box (1), absorbing material (4), and a testing antenna (6), characterized in that: The top of the test box (1) is equipped with a top cover (2) that is adjustable up and down via a linear drive (3). A support partition (5) is horizontally arranged inside the test box (1). The absorbing material (4) is fixed to the inner circumferential wall, bottom, bottom of the top cover (2), and top of the support partition (5) of the test box (1). The test antenna (6) is installed in the middle of the top of the support partition (5). The top of the support partition (5) is provided with several placement seats (7) for placing the test terminal (15). The distance between the placement seats (7) and the test antenna (6) is equal. The bottom of the support partition (5) is movably provided with several movable plates (8) corresponding one-to-one with the placement seats (7). The support partition (5) is provided with clearance sliding holes (501) corresponding to the movable plates (8) one by one, and the top of the movable plates (8) passes through the clearance sliding holes (501) and is fixedly connected to the placement seat (7). The test antenna (6) is provided with a drive seat (10) directly below it, and the drive seat (10) is fixedly connected to the top cover (2) through several connecting rods (9), so that the drive seat (10) and the top cover (2) move up and down synchronously. The drive seat (10) is connected to each movable plate (8) through a drive structure (11) to synchronously push several movable plates (8) to move closer to or further away from the test antenna (6), and the distance between the placement seat (7) and the test antenna (6) is always equal.

2. The microwave anechoic chamber testing system according to claim 1, characterized in that: The top edge of the test box (1) is provided with a slot (101), and a finger spring (12) is fixed on the inner side wall of the slot (101). The edge of the top cover (2) is provided with a plug part (201) that is inserted into the inside of the slot (101), and the plug part (201) abuts against the finger spring (12).

3. The microwave anechoic chamber testing system according to claim 1, characterized in that: The drive structure (11) includes a fixed hinge seat (1101) fixed at the center of the bottom end of the support partition (5) and a first drive rod (1102) and a second drive rod (1103) corresponding to a plurality of movable plates (8). The first drive rod (1102) and the second drive rod (1103) are rotatably connected in the middle. The two ends of the first drive rod (1102) are rotatably connected to the drive seat (10) and the movable plate (8) respectively. One end of the second drive rod (1103) is rotatably connected to the fixed hinge seat (1101), and the other end of the second drive rod (1103) is slidably connected to the movable plate (8) through a connecting pin (1104). Each movable plate (8) is provided with a strip-shaped sliding hole (801) for accommodating the connecting pin (1104) to move up and down along its length.

4. The microwave anechoic chamber testing system according to claim 1, characterized in that: The placement seat (7) includes a horizontal section (701) that is horizontally slidably disposed at the top of the support partition (5) and a vertical section (702) that is vertically fixed at the top of the horizontal section (701) on the side away from the test antenna (6).

5. The microwave anechoic chamber testing system according to claim 4, characterized in that: The top of the support partition (5) is provided with several limiting seats (13) corresponding one-to-one with the placement seat (7), and the limiting seat (13) includes a clamping part (1302) parallel to the vertical section (702) and a supporting part (1301) for installation and fixing with the support partition (5). A gap is reserved between the bottom end of the clamping part (1302) and the support partition (5) to accommodate the horizontal movement of the horizontal section (701).

6. The microwave anechoic chamber testing system according to claim 5, characterized in that: A spacing adjustment structure (14) is provided between the top end of the connecting rod (9) and the top cover (2) to adjust the distance between them.

7. The microwave anechoic chamber testing system according to claim 6, characterized in that: The spacing adjustment structure (14) includes a fixed seat (1401) fixed to the top of the connecting rod (9) and a fixed rod (1402) fixed to the bottom of the top cover (2). The top of the fixed seat (1401) is rotatably provided with a rotating part (1403), and the middle of the rotating part (1403) is threadedly connected to the fixed rod (1402). The middle of the fixed seat (1401) is provided with a receiving cavity (1404) for accommodating the fixed rod (1402) extending into the interior.

8. The microwave anechoic chamber testing system according to claim 7, characterized in that: The rotating part (1403) is replaced by a baffle (1405) and a spring (1406). The bottom end of the fixed rod (1402) extends into the cavity (1404). The baffle (1405) is fixed to the bottom end of the fixed rod (1402) and can move up and down inside the cavity (1404). The spring (1406) is located at the bottom end inside the cavity (1404).

9. The microwave anechoic chamber testing system according to any one of claims 7-8, characterized in that: The connecting rod (9) and the fixing seat (1401) are both made of non-metallic materials, and the outer sides of the connecting rod (9) and the fixing seat (1401) are covered with wave-absorbing material (4).

10. The microwave anechoic chamber testing system according to claim 1, characterized in that: The two linear drive units (3) are vertically installed on both sides of the detection box (1), and the output ends of the linear drive units (3) are fixedly connected to both sides of the top cover (2).

Images