Adjustable swing arm rotating platform and testing device

Abstract

The utility model relates to the technical field of communication testing, and discloses an adjustable swing arm rotating platform and a testing device, on one hand, the adjustable swing arm rotating platform comprises a servo motor and an adjustable swing arm module arranged at the output end of the servo motor, and the adjustable swing arm module comprises a swing arm support, a movable frame body and a laser antenna module; on one hand, the swing arm support is connected with the output end of the servo motor, the swing arm support is sleeved with the movable frame body, the movable frame body is in sliding fit with the swing arm support, a plurality of locking structures are arranged between the movable frame body and the swing arm support, and the end of the movable frame body is connected with the laser antenna module. The testing device comprises a base, a control cabinet, the adjustable swing arm rotating platform and a clamp, the clamp is correspondingly arranged below the laser antenna module, and the center of the antenna is aligned with the target center of the clamp.

Description

Technical Field

[0001] The utility model relates to the technical field of communication testing, in particular to an adjustable swing arm rotating platform and a testing device. Background Art

[0002] 5G products (28GHz) usually use the AIP (Antenna In Package) packaging structure. At such a high frequency, RF testing requires the use of OTA (Over The Air) measurement methods. RF test antennas can be used for over-the-air (OTA) testing. It is usually completed after communication standards and electromagnetic compatibility (EMC) standard tests. In these test cases, the device under test (DUT) is usually placed in an open-air test range (OATR) with low electromagnetic interference or in a fully anechoic chamber built for this purpose.

[0003] The working frequency band supported by the OTA test chamber is closely related to the loss and measurement distance of the chamber. The measurement distance is the distance between the measurement turntable where the object to be tested is placed and the measurement antenna in the chamber. As the number of supported communication standards of current terminals increases, the frequency range becomes wider and wider, and the frequency bands that need to be measured become wider and wider. However, the measurement antenna in the existing OTA test chamber is fixed, so the distance between the measurement turntable where the object to be tested is placed and the measurement antenna in the chamber is fixed, and therefore cannot meet the measurement of different frequency bands. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide an adjustable swing arm rotating platform and a testing device that meet the measurement requirements of different frequency bands.

[0005] The technical solution of the utility model is: an adjustable swing arm rotating platform and a testing device. On the one hand, the adjustable swing arm rotating platform includes a servo motor and an adjustable swing arm module arranged at the output end of the servo motor, the adjustable swing arm module includes a swing arm bracket, a movable frame and a laser antenna module, the swing arm bracket is connected to the output end of the servo motor, the movable frame is sleeved on the swing arm bracket, the movable frame is slidably matched with the swing arm bracket, a number of locking structures are arranged between the movable frame and the swing arm bracket, and the end of the movable frame is connected to the laser antenna module.

[0006] It can be seen from the above scheme that the servo motor is used to drive the adjustable swing arm module to perform rotation adjustment, so as to achieve rotation angle adjustment of the laser antenna module, so as to facilitate the measurement of radio frequency while performing transmission and reception relative to the device under test in different directions while maintaining a constant distance between the laser antenna module and the device under test. The laser antenna module achieves position adjustment in the height direction through the sliding cooperation of the mobile frame on the swing arm bracket, the laser is used to assist the antenna in alignment, and the antenna is used to detect after aligning with the device under test. The utility model can measure radio frequency in different directions and realize the measurement requirements of different frequency bands through height adjustment.

[0007] The locking structure includes a guide slide bar and a locking member, wherein the guide slide bar is fixedly connected to the swing arm bracket along the length direction, and the locking member is fixedly connected to the limit plate in the mobile frame, and the locking member includes a locking slider and a locking handle that are slidably matched with the guide slide bar, and the locking handle is connected to the side of the locking slider. It can be seen that the locking slider is used to adjust the mobile frame to different heights on the swing arm bracket by sliding on the guide slide bar, and the locking handle is used to fix and lock the mobile frame.

[0008] An indicator is fixedly connected to the outer side of the limit plate, a scale plate is arranged on the side of the swing arm bracket, a scale line is arranged on the scale plate, and the indicator tip of the indicator points to the scale line. It can be seen that by providing the scale plate, the straight-line distance moved by the indicator can be observed more intuitively and accurately, thereby facilitating the height adjustment of the laser antenna module.

[0009] The laser antenna module includes an antenna and a laser. The end of the mobile frame is provided with a limit frame through a mounting frame. The laser antenna module is provided on the limit frame. The limit frame is provided with a positioning groove adapted to the antenna. The antenna is coaxial with the transmitting end of the laser. The laser is provided below the antenna through a limit plate. It can be seen that the limit frame is used to limit the antenna. The laser is provided below the antenna through the limit plate, so that the antenna can be easily aligned and fine-tuned by the laser.

[0010] The inner sides of the movable frame, the swing arm bracket and the mounting frame are all provided with pyramidal wave absorbing cotton. It can be seen that the pyramidal wave absorbing cotton is used to absorb electromagnetic wave energy and reduce the interference of the laser antenna module to the signal.

[0011] On the other hand, the test device includes a base, a control cabinet, the adjustable swing arm rotating platform and a fixture. The control cabinet, the adjustable swing arm rotating platform and the fixture are all arranged on the base. The fixture is correspondingly arranged below the laser antenna module, and the center of the antenna is aligned with the bull's eye of the fixture. It can be seen that the fixture is used to realize the limited clamping of the device under test, and the adjustable swing arm rotating platform tests different angles and different frequency bands of the device under test through rotation adjustment and height adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of an adjustable swing arm rotating platform;

[0013] Figure 2 It is a partial structural schematic diagram of the utility model;

[0014] Figure 3 yes Figure 1 The structural diagram at A in the middle;

[0015] Figure 4 yes Figure 1 The structural diagram at B in the middle;

[0016] Figure 5 It is a structural diagram of the test device. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0018] like Figures 1 to 5 As shown, the utility model is an adjustable swing arm rotating platform and a testing device. On the one hand, the utility model provides an adjustable swing arm rotating platform, including a servo motor 1 and an adjustable swing arm module arranged at the output end of the servo motor 1, the adjustable swing arm module includes a swing arm bracket 2, a movable frame 3 and a laser antenna module 5, the swing arm bracket 2 is connected to the output end of the servo motor 1, the movable frame 3 is sleeved on the swing arm bracket 2, the movable frame 3 is slidably matched with the swing arm bracket 2, a plurality of locking structures are arranged between the movable frame 3 and the swing arm bracket 2, and the end of the movable frame 3 is connected to the laser antenna module 5 through a mounting frame 10.

[0019] In this embodiment, the servo motor 1 is connected to the adjustable swing arm module through a reducer. The adjustable swing arm module can achieve a rotation of ±45°, and its rotation positioning accuracy is 0.5°. The servo motor 1 is laterally connected to the adjustable swing arm module. The movable frame 3 is made of plastic, and the swing arm bracket 2 and the mounting frame 10 are both made of aluminum profiles.

[0020] The locking structure includes a guide slide bar 6 and a locking member 7. The guide slide bar 6 is fixedly connected to the swing arm bracket 2 along the length direction. The locking member 7 is fixedly connected to the limit plate 8 in the mobile frame 3. The locking member 7 includes a locking slider 71 and a locking handle 72 that are slidably matched with the guide slide bar 6. The locking handle 72 is connected to the side of the locking slider 71. In this embodiment, the limit plate 8 is fixed to a side plate of the mobile frame 3 with a longer length, which is convenient for manual adjustment of the locking structure. The guide slide bar 6 includes two slide bars arranged in parallel. The locking member 7 is provided with a movable through hole adapted to the guide slide bar 6. The latch 13 on the mobile frame 3 passes through the end of the limit plate 8 to abut against the locking member 7, thereby reducing the problem of looseness between the locking member 7 and the mobile frame 3 caused by long-term sliding of the locking member 7 on the guide slide bar 6.

[0021] An indicator 11 is fixedly connected to the outer side of the limit plate 8, and a scale plate 12 is arranged on the side of the swing arm bracket 2. The scale plate 12 is provided with scale lines, and the indicating tip of the indicator 11 points to the scale lines. In this embodiment, the scale plate 12 is exposed and arranged on the side of the swing arm bracket 2, and the adjustable height of the movable frame 3 on the swing arm bracket 2 is 1500-2000 mm.

[0022] The laser antenna module 5 includes an antenna 51 and a laser 52. A limiting frame 53 is provided at the end of the mobile frame 3 through the mounting frame 10. The laser antenna module 5 is provided on the limiting frame 53. The limiting frame 53 is provided with a positioning groove 531 adapted to the antenna 51. The antenna 51 is coaxial with the transmitting end of the laser 52. The laser 52 is correspondingly arranged below the antenna 51 through a limiting piece 54. In this embodiment, the antenna 51 is a horn antenna. An orthogonal mode coupler is provided in the limiting frame 53. The orthogonal mode coupler is connected to the antenna 51 through a waveguide component. The antenna 51 is guaranteed to be a reference through the positioning groove 531. The positioning groove 531 can avoid shaking during movement, thereby ensuring high stability of the antenna movement.

[0023] The inner sides of the movable frame 3, the swing arm bracket 2 and the mounting frame 10 are all provided with pyramidal wave absorbing cotton 9. In this embodiment, the pyramidal wave absorbing cotton 9 is made of absorbing material.

[0024] On the other hand, the utility model also provides a test device, including a base 100, a control cabinet 200, the adjustable swing arm rotating platform and a fixture 300. The control cabinet 200, the adjustable swing arm rotating platform and the fixture 300 are all arranged on the base 100. The fixture 300 is correspondingly arranged below the laser antenna module 5, and the center of the antenna 51 is aligned with the bull's eye of the fixture 300. In this embodiment, the test device is used for testing in an OTA test darkroom. The fixture 300 is provided with a pyramid absorbing cotton. During the rotation of the adjustable swing arm rotating platform, the relative position offset between the antenna 51 and the device under test is less than 10 mm.

[0025] The working process of the utility model is as follows: the device under test is placed on the fixture 300, the antenna 51 is aligned with the device under test through the transmitter 52, the antenna 51 measures the radio frequency sent by the device under test, and performs sending and receiving operations relative to the device under test.

[0026] When performing height adjustment, the locking piece 7 is unlocked, and the movable frame 3 is manually slid. According to the scale plate 12, the movable frame 3 is manually adjusted to a specific height and then fixed by the locking piece 7. When performing rotation adjustment, the servo motor 1 drives the swing arm bracket 2 and the movable frame 3 and the laser antenna module 5 at the end to rotate. During this process, the antenna 51 rotates relative to the fixture, so that the radio frequency can be measured while performing sending and receiving operations relative to the device under test at different angles at a constant distance from the device under test.

[0027] Finally, it should be emphasized that the above is not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An adjustable swing arm rotating platform, comprising a servo motor (1) and an adjustable swing arm module arranged at the output end of the servo motor (1), characterized in that: The adjustable swing arm module comprises a swing arm bracket (2), a movable frame (3) and a laser antenna module (5); the swing arm bracket (2) is connected to the output end of the servo motor (1); the movable frame (3) is sleeved on the swing arm bracket (2); the movable frame (3) and the swing arm bracket (2) are slidably matched; a plurality of locking structures are arranged between the movable frame (3) and the swing arm bracket (2); and the end of the movable frame (3) is connected to the laser antenna module (5).

2. The adjustable swing arm rotating platform according to claim 1, characterized in that: The locking structure comprises a guide slide bar (6) and a locking member (7); the guide slide bar (6) is fixedly connected to the swing arm bracket (2) along the length direction; the locking member (7) is fixedly connected to a limit plate (8) in the movable frame (3); the locking member (7) comprises a locking slider (71) and a locking handle (72) which are slidably matched with the guide slide bar (6); the locking handle (72) is connected to the side of the locking slider (71).

3. The adjustable swing arm rotating platform according to claim 2, characterized in that: An indicator (11) is fixedly connected to the outer side of the limit plate (8), a scale plate (12) is arranged on the side of the swing arm bracket (2), scale lines are arranged on the scale plate (12), and the indicator tip of the indicator (11) points to the scale lines.

4. The adjustable swing arm rotating platform according to claim 1, characterized in that: The laser antenna module (5) comprises an antenna (51) and a laser (52); a limiting frame (53) is provided at the end of the movable frame (3) via a mounting frame (10); the laser antenna module (5) is arranged on the limiting frame (53); a locking groove (531) adapted to the antenna (51) is provided on the limiting frame (53); the antenna (51) is coaxial with an emitting end of the laser (52); and the laser (52) is correspondingly arranged below the antenna (51) via a limiting piece (54).

5. The adjustable swing arm rotating platform according to claim 4, characterized in that: The inner sides of the movable frame (3), the swing arm bracket (2) and the mounting frame (10) are all provided with pyramid-shaped wave-absorbing cotton (9).

6. A testing device comprising the adjustable swing arm rotating platform according to claim 5, characterized in that: The invention comprises a base (100), a control cabinet (200), the adjustable swing arm rotating platform and a clamp (300), wherein the control cabinet (200), the adjustable swing arm rotating platform and the clamp (300) are all arranged on the base (100), the clamp (300) is correspondingly arranged below the laser antenna module (5), and the center of the antenna (51) is aligned with the bull's eye of the clamp (300).

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