Testing device for multi-antenna wireless equipment

Abstract

The invention relates to the technical field of antenna testing, and discloses a testing device for multi-antenna wireless equipment, which comprises a base, a probe and a plurality of testing components, a vertical column is arranged on the upper surface of the base, the vertical column is vertically arranged and is hollow, the probe is arranged at the upper end of the vertical column, and the testing components are arranged in the vertical column. The testing component comprises a driving assembly and a mounting assembly, the driving assembly is located in the stand column, the mounting assembly is located outside the stand column, the driving assembly comprises a linear module and a lead screw seat, the linear module is used for driving the lead screw seat to move in the vertical direction, a mounting ring and a first motor are mounted on the lead screw seat, and the mounting ring is coaxial with the stand column; the mounting ring can rotate around the axis of the mounting ring, the mounting ring and the first motor form power connection, a second magnet is embedded in the outer circular surface of the mounting ring, the mounting assembly comprises a rotating lantern ring coaxially arranged outside the stand column in a sleeving mode, and a first magnet right opposite to the second magnet is embedded in the inner wall of the rotating lantern ring.

Description

Technical Field

[0001] The present invention relates to the technical field of antenna testing, and in particular to a testing device for multi-antenna wireless equipment. Background Art

[0002] During antenna testing, it is generally necessary to drive the antenna to be tested to rotate and move around the probe. For example, when a scanning method is used to perform near-field testing on an antenna, the antenna to be tested needs to rotate or move with the probe as a reference point. For example, the Chinese invention patent application with application publication number CN117368587A discloses an antenna testing device and an antenna testing system, which drives the receiving probe to move relative to the antenna through a displacement mechanism to scan the antenna and collect the radio frequency signal radiated by the antenna at various test positions. However, in either case, the accuracy of the rotation and movement is one of the factors affecting the test accuracy. Therefore, it is necessary to improve the accuracy of the rotation and movement to ensure the accuracy of the antenna test.

[0003] A multi-antenna wireless device refers to a device with multiple signal transmitting ends, that is, it has multiple antennas. The positional relationship between the antennas in different devices is also different. Therefore, the device is generally driven directly to rotate or move with the probe as the reference point. Since multi-antenna devices are generally heavy, they have large inertia when driven to rotate or move. Not only is the displacement accuracy low, but the device is prone to vibration during the start or stop stages, which can easily lead to changes in the position accuracy between the device and the probe, thus affecting the final test accuracy.

[0004] Based on the above, the present invention proposes a testing device for a multi-antenna wireless device. Summary of the Invention

[0005] In order to solve the antenna test accuracy problem mentioned in the above background, the present invention provides a test device for a multi-antenna wireless device.

[0006] In order to achieve the above technical objectives, the technical solutions adopted by the present invention are as follows.

[0007] A test device for a multi-antenna wireless device includes a base, a probe, and a test member. The upper surface of the base is provided with a vertically arranged column and has a hollow interior. The probe is provided at the upper end of the column. A plurality of test members are provided. The test component includes a drive assembly and a mounting assembly, the drive assembly is located inside the column, and the mounting assembly is located outside the column. The drive assembly includes a linear module and a screw seat. The linear module is used to drive the screw seat to move in a vertical direction. A mounting ring and a first motor are installed on the screw seat. The mounting ring is coaxial with the column and can rotate around its own axis. The mounting ring forms a power connection with the first motor, and the outer circumferential surface of the mounting ring is inlaid with a second magnet. The mounting assembly comprises a rotating collar coaxially sleeved on the outside of the column, and the inner wall of the rotating collar is inlaid with a first magnet facing the second magnet.

[0008] As a further improvement and optimization of the present invention, the linear module includes a screw and a second motor. The screw is arranged vertically, a power connection is formed between the screw and the second motor, and a threaded connection is formed between the screw seat and the screw.

[0009] As a further improvement and optimization of the present invention, the screw seats in the driving assemblies in the multiple test components are distributed in the vertical direction in the column, and the screw seats are provided with avoidance holes for avoiding the screws in other test components.

[0010] As a further improvement and optimization of the present invention, a power connection is formed between the first motor and the mounting ring via a power transmission member.

[0011] As a further improvement and optimization of the present invention, the power transmission member includes a ring gear coaxially arranged on the mounting ring, and the ring gear and the first motor are connected to each other through a spur gear set.

[0012] As a further improvement and optimization of the present invention, the magnetic poles of the first magnet and the second magnet are opposite to each other.

[0013] As a further improvement and optimization of the present invention, the outer circumferential surface of the mounting ring is close to the inner wall of the column, and a plurality of second magnets are arranged in an array along the circumferential direction of the mounting ring, and a plurality of first magnets are correspondingly arranged.

[0014] As a further improvement and optimization of the present invention, a telescopic rod is provided radially on the outer circumferential surface of the rotating collar, and the antenna to be tested is mounted on the end of the telescopic rod.

[0015] As a further improvement and optimization of the present invention, the rotating collars in the mounting assemblies in the multiple test components are distributed along the vertical direction on the column.

[0016] As a further improvement and optimization of the present invention, initially, the telescopic rod is retracted to its shortest position; Multiple antennas in a multi-antenna wireless device are respectively mounted on the ends of multiple telescopic rods. The corresponding telescopic rods are then driven to move in the vertical direction by a linear module, and the corresponding telescopic rods are driven to rotate around the column by a first motor, thereby adjusting the height relationship of the multiple antennas in the vertical direction and the angle relationship of the multiple antennas. Then, all the first motors are operated to drive all the antennas to rotate synchronously. When the rotation speed of the antennas reaches a uniform speed, the telescopic rods are started, pulling the corresponding antennas to move, so that the positional relationship between the multiple antennas in the horizontal direction is adjusted, and finally the positional relationship between the multiple antennas is consistent with the positional relationship of the antennas in the multi-antenna wireless device. After the test is completed, the telescopic rod is retracted to its shortest position and the first motor stops running.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. Initially, the telescopic rod is retracted to its shortest. In the process of adjusting the positional relationship between the multiple antennas, the angle relationship between the multiple antennas is first adjusted by the first motor, and the height relationship of the multiple antennas in the vertical direction is adjusted by the linear module. After the angle and height are adjusted, all the first motors start to run synchronously to rotate the telescopic rod and the antenna. After the speed stabilizes, the telescopic rod is extended accordingly. The significance of this is that when the rotation occurs, the telescopic rod is extended too long, which means that the moment of inertia is large. At the moment of starting and stopping, it is easy to cause the antenna installed at the end of the telescopic rod to vibrate, thereby affecting the test accuracy. On the other hand, in this solution, the angle and height relationship are adjusted first, and then the telescopic rod and the antenna are rotated. After the speed stabilizes, the telescopic rod is extended, which can avoid this situation, thereby improving the test accuracy. After the position is adjusted, the first motor continues to rotate, and after the antenna test is completed in cooperation with the linear module, the telescopic rod is retracted to its shortest and then stops rotating. 2. When the linear module is used to pull the antenna to move vertically or to rotate it around a column, traction is achieved through the principle of magnetic coupling between the first magnet and the second magnet. This is significant in that a flexible transmission mechanism is established between the two magnets. Therefore, during the traction process, the vertical or rotational movement of the antenna is flexible and slow, which can avoid antenna vibration caused by instantaneous rigid drive, thereby affecting test accuracy. In other words, this traction method can improve test accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The structure of the present invention is schematically shown Figure 1 ; Figure 2 The structure of the present invention is schematically shown Figure 2 ; Figure 3 It is a structural diagram of the column and drive assembly; Figure 4 Schematic diagram of the traction component structure Figure 1 ; Figure 5 Schematic diagram of the traction component structure Figure 2 ; Figure 6 It is a structural diagram of the telescopic rod and the rotating ring; Figure 7 It is a cross-sectional view of the telescopic rod and the rotating ring.

[0019] The reference numerals in the accompanying drawings are: 100. Base; 101. Column; 102. Probe; 103. Rotating collar; 104. Telescopic rod; 105. First magnet; 106. Linear module; 107. Traction component; 108. Screw seat; 109. Mounting ring; 110. Second magnet; 111. First motor; 112. Power transmission component. DETAILED DESCRIPTION

[0020] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the invention, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0021] In the attached drawings of this solution, a refers to the antenna to be tested. In a multi-antenna wireless device, generally, multiple and different antennas are provided, and the layouts of the multiple antennas inside are different.

[0022] Reference Figure 1-Figure 7 A testing device for a multi-antenna wireless device includes a base 100, a probe 102, and a testing component.

[0023] A column 101 is provided on the upper surface of the base 100 . The column 101 is vertically arranged and hollow inside.

[0024] The probe 102 is disposed at the upper end of the column 101 .

[0025] The test component is used to place the antenna of the device to be tested. Since there are multiple antennas in the device to be tested, multiple test components are correspondingly provided. The attached figure of this solution shows three.

[0026] The test component includes a driving assembly and a mounting assembly, wherein the driving assembly is located inside the column 101 and the mounting assembly is located outside the column 101 .

[0027] The driving assembly includes a screw and a screw seat 108. The screw is arranged vertically, and a power connection is formed between the screw and the second motor arranged on the base 100. The second motor can drive the screw to rotate. The screw seat 108 and the column 101 form a sliding guide in the vertical direction. The screw seat 108 is threadedly connected to the screw. When the screw rotates, it can drive the screw seat 108 to move in the vertical direction. In addition, the screw seat 108 is provided with an avoidance hole for avoiding the screws in other test components.

[0028] A mounting ring 109 and a first motor 111 are installed on the screw seat 108. The mounting ring 109 is coaxial with the column 101. The mounting ring 109 can rotate around its own axis. The mounting ring 109 and the first motor 111 form a power connection. Therefore, the first motor 111 can drive the mounting ring 109 to rotate, and the second motor can drive the screw seat 108 and the mounting ring 109 to move in the vertical direction. Furthermore, the first motor 111 and the mounting ring 109 form a power connection through a power transmission component 112, and the power transmission component 112 is an existing gear ring technology.

[0029] The outer circumferential surface of the mounting ring 109 is inlaid with second magnets 110 . A plurality of second magnets 110 are arranged in an array along the circumference of the mounting ring 109 . Preferably, the outer circumferential surface of the mounting ring 109 is close to the inner wall of the column 101 .

[0030] It should be noted that the screw seats 108 in the drive assemblies of the multiple test components are distributed in the vertical direction in the column 101.

[0031] The lead screw and the second motor form a linear module 106 .

[0032] The screw seat 108 , the mounting ring 109 , the second magnet 110 and the first motor 111 constitute the traction component 107 .

[0033] The mounting assembly includes a rotating collar 103 coaxially sleeved on the outside of the column 101. The inner wall of the rotating collar 103 is inlaid with a first magnet 105. The first magnet 105 is directly opposite to the second magnet 110. There are multiple corresponding first magnets 105. The magnetic poles of the first magnet 105 and the second magnet 110 are opposite, which is a magnetic attraction force. Therefore, when the mounting ring 109 rotates or moves in the vertical direction, based on the principle of magnetic coupling, it can rotate or move in the vertical direction with the rotating collar 103.

[0034] A telescopic rod 104 is radially provided on the outer circumferential surface of the rotating collar 103. The telescopic rod 104 can adopt existing electric telescopic rod technology or existing pneumatic telescopic rod technology, etc., which will not be described in detail. The antenna in the device to be tested can be installed at the end of the telescopic rod 104. For example, a clamp is provided at the end of the telescopic rod 104, or the antenna and the telescopic rod 104 are connected by existing bolt technology. This is achievable with existing technology and will not be described in detail.

[0035] It should be noted that the rotating collars 103 in the mounting assemblies of the multiple test components are distributed along the vertical direction on the column 101 .

[0036] Working principle of the present invention: The linear module 106 can drive the screw base 108 to move in the vertical direction, and the screw base 108 moves with the mounting ring 109. Through the cooperation of the second magnet 110 and the first magnet 105, the mounting ring 109 can move with the rotating collar 103. The rotating collar 103 moves with the telescopic rod 104 and the antenna to be tested mounted on the end of the telescopic rod 104. Similarly, when the first motor 111 drives the mounting ring 109 to rotate, the second magnet 110 cooperates with the first magnet 105 to rotate with the antenna to be tested. The movement of the telescopic rod 104 can adjust the distance between the antenna to be tested and the axis of the column 101; This solution is to install multiple antennas in a multi-antenna wireless device at the ends of multiple telescopic rods 104 respectively, and then adjust the positional relationship between the multiple antennas through the cooperation of the linear module 106, the first motor 111 and the telescopic rod 104, so that the positional relationship between the multiple antennas is consistent with the positional relationship in the device, and then drive the multiple antennas to rotate around the column 101 and move in the vertical direction at the same time through the cooperation of the linear module 106 and the first motor 111, and at the same time, the antenna sends a signal and the probe 102 receives the signal, thereby realizing the testing of the antenna.

[0037] The core of this program is: 1. Initially, the telescopic rod is retracted to its shortest. In the process of adjusting the positional relationship between the multiple antennas, the angle relationship between the multiple antennas is first adjusted by the first motor, and the height relationship of the multiple antennas in the vertical direction is adjusted by the linear module. After the angle and height are adjusted, all the first motors start to run synchronously to rotate the telescopic rod and the antenna. After the speed stabilizes, the telescopic rod is extended accordingly. The significance of this is that when the rotation occurs, the telescopic rod is extended too long, which means that the moment of inertia is large. At the moment of starting and stopping, it is easy to cause the antenna installed at the end of the telescopic rod to vibrate, thereby affecting the test accuracy. On the other hand, in this solution, the angle and height relationship are adjusted first, and then the telescopic rod and the antenna are rotated. After the speed stabilizes, the telescopic rod is extended, which can avoid this situation, thereby improving the test accuracy. After the position is adjusted, the first motor continues to rotate, and after the antenna test is completed in cooperation with the linear module, the telescopic rod is retracted to its shortest and then stops rotating. 2. When the linear module is used to pull the antenna to move vertically or to rotate it around a column, traction is achieved through the principle of magnetic coupling between the first magnet and the second magnet. This is significant in that a flexible transmission mechanism is established between the two magnets. Therefore, during the traction process, the vertical or rotational movement of the antenna is flexible and slow, which can avoid antenna vibration caused by instantaneous rigid drive, thereby affecting test accuracy. In other words, this traction method can improve test accuracy.

[0038] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can, without departing from the scope of the technical solution of the present invention, make some changes or modifications to equivalent embodiments using the technical contents disclosed above. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A test device for a multi-antenna wireless device, comprising a base (100), a probe (102) and a test component, characterized in that: A column (101) is provided on the upper surface of the base (100), the column (101) is arranged vertically and is hollow inside, a probe (102) is provided at the upper end of the column (101), and a plurality of test components are provided; The test component includes a drive component and a mounting component, the drive component is located inside the column (101), and the mounting component is located outside the column (101), the drive component includes a linear module (106) and a screw seat (108), the linear module (106) is used to drive the screw seat (108) to move in a vertical direction, a mounting ring (109) and a first motor (111) are mounted on the screw seat (108), the mounting ring (109) is coaxial with the column (101), the mounting ring (109) can rotate around its own axis, the mounting ring (109) and the first motor (111) form a power connection, and the outer cylindrical surface of the mounting ring (109) is inlaid with a second magnet (110); The mounting assembly comprises a rotating collar (103) coaxially sleeved on the outside of the column (101), and an inner wall of the rotating collar (103) is inlaid with a first magnet (105) facing the second magnet (110).

2. The test device for a multi-antenna wireless device according to claim 1, wherein: The linear module (106) comprises a screw and a second motor, the screw is arranged vertically, a power connection is formed between the screw and the second motor, and a threaded connection is formed between the screw seat (108) and the screw.

3. The test device for a multi-antenna wireless device according to claim 2, wherein: The screw rod seats (108) in the drive assemblies of the plurality of test components are distributed in the vertical direction in the column (101), and the screw rod seats (108) are provided with avoidance holes for avoiding screw rods in other test components.

4. The testing device for a multi-antenna wireless device according to claim 1, wherein: The first motor (111) and the mounting ring (109) are connected in power via a power transmission member (112).

5. The testing device for a multi-antenna wireless device according to claim 4, wherein: The power transmission member (112) comprises a gear ring coaxially arranged on the mounting ring (109), and a power connection is achieved between the gear ring and the first motor (111) via a spur gear set.

6. The test device for a multi-antenna wireless device according to claim 1, wherein: The first magnet (105) and the second magnet (110) have opposite magnetic poles.

7. The test device for a multi-antenna wireless device according to claim 6, wherein: The outer circumferential surface of the mounting ring (109) is close to the inner wall of the column (101), and a plurality of second magnets (110) are arranged in an array along the circumferential direction of the mounting ring (109), and a plurality of first magnets (105) are correspondingly arranged.

8. The test device for a multi-antenna wireless device according to claim 7, wherein: A telescopic rod (104) is radially arranged on the outer circumferential surface of the rotating collar (103), and the antenna to be tested is mounted on the end of the telescopic rod (104).

9. The test device for a multi-antenna wireless device according to claim 8, wherein: The rotating collars (103) in the mounting assemblies of the plurality of test members are distributed in a vertical direction on the column (101).

10. The test device for a multi-antenna wireless device according to claim 9, wherein: Initially, the telescopic rod (104) is shortened to its shortest position; The plurality of antennas in the multi-antenna wireless device are respectively mounted on the ends of the plurality of telescopic rods (104), and then the corresponding telescopic rods (104) are driven to move in the vertical direction by the linear module (106), and the corresponding telescopic rods (104) are driven to rotate around the column (101) by the first motor (111), so that the height relationship of the plurality of antennas in the vertical direction and the angle relationship of the plurality of antennas are adjusted, and then all the first motors (111) are operated to drive all the antennas to rotate synchronously, and when the rotation speed of the antenna is uniform, the telescopic rods (104) are started to pull the corresponding antennas to move, so that the positional relationship between the plurality of antennas in the horizontal direction is adjusted, and finally the positional relationship between the plurality of antennas is consistent with the positional relationship of the antennas in the multi-antenna wireless device; After the test is completed, the telescopic rod (104) is retracted to its shortest position, and the first motor (111) stops running.

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