Multi-probe OTA test camera obscura

Abstract

The utility model provides a multi-probe OTA test camera obscura, belongs to the technical field of communication test, and solves the problems that a worker needs to manually rotate a knob to adjust the distance between a test probe and an object to be tested, the distance between each probe and the object to be tested cannot be kept consistent, and the detection effect is influenced. The multi-probe OTA test camera obscura comprises a shell, probes and a base, the shell is fixed to the base, a plurality of sliding openings are formed in the inner wall of the shell, hollow blocks are connected to the sliding openings in a sliding mode, sliding strips are connected into the hollow blocks in a sliding mode, a driving mechanism is arranged between the sliding strips and the hollow blocks, the probes are rotationally connected to the sliding strips, and adjusting mechanisms are arranged between the sliding strips and the probes. The utility model has the advantages that the distance between the test probe and the object to be tested does not need to be manually adjusted by a worker, and the distance between each probe and the object to be tested is kept consistent.

Description

Technical Field

[0001] The utility model belongs to the technical field of communication testing, and relates to a multi-probe OTA test dark box, in particular to a multi-probe OTA test dark box. Background Art

[0002] At present, the multi-probe method for testing single-input single-output technology has become a key technology in the field of wireless communications. After continuous development in recent years, SISO technology has been increasingly used in wireless communication systems. SISO adopts a system architecture with single-channel input and single-channel output. At present, more and more attention is paid to the test of the radiation performance of the whole machine in the RF performance test of wireless terminals. This radiation performance reflects the final transmission and reception performance of the wireless terminal. At present, there are mainly two methods for investigation: one is to judge from the radiation performance of the antenna, which is a more traditional antenna test method, called passive testing; the other is to test the radiation power and receiving sensitivity of the wireless terminal in a specific microwave darkroom, which is called active testing.

[0003] After searching, it is found that a universal OTA test dark box is disclosed in Chinese patent documents [Application No.: 202220308067.1; Publication No.: CN 217506000 U]. This universal OTA test dark box relates to a field of communication test technology, including a mounting frame, a test probe and a base, wherein the mounting frame is arranged in a regular polygon, and a plurality of bases are installed at the bottom of the mounting frame, wherein a plurality of test probes are arranged on the inner wall of the frame of the mounting frame, and the test probe is installed on the inner wall of the mounting frame through a mounting mechanism, and the rotating shaft is driven to rotate by a knob, and the active bevel gear and the driven bevel gear are driven to rotate while the rotating shaft is rotated, and the lead screw drives the slider to slide horizontally, thereby driving the mounting plate to move vertically through the connecting rod, and adjusting the distance between the test probe and the object to be tested, and a groove is provided at the bottom of the base, and a universal wheel is connected to the groove through a hydraulic cylinder, and the hydraulic cylinder extends the universal wheel from the bottom of the groove, so as to push the device to move, and the vibration generated is buffered by the connecting spring, thereby ensuring the stability of the test probe.

[0004] The connecting frame and connecting spring disclosed in the patent adjust the distance between the test probe and the object to be tested, and a groove is provided at the bottom of the base, in which a universal wheel is connected via a hydraulic cylinder. The hydraulic cylinder extends the universal wheel from the bottom of the groove to push the device to move, and the vibration generated is buffered by the connecting spring to ensure the stability of the test probe. However, the staff is required to manually turn the knob to adjust the distance between the test probe and the object to be tested, and it is impossible to ensure that the distance between each probe and the object to be tested remains consistent, which affects the detection effect. Utility Model Content

[0005] The purpose of the utility model is to address the above-mentioned problems in the existing technology and to propose a multi-probe OTA test dark box. The technical problem to be solved by the utility model is: how to achieve the goal of keeping the distance between each probe and the object to be tested consistent without the need for the staff to manually adjust the distance between the test probe and the object to be tested.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A multi-probe OTA test black box comprises a shell, a probe and a base, wherein the shell is fixed on the base, a plurality of sliding openings are provided on the inner wall of the shell, a hollow block is slidably connected to the sliding openings, a sliding bar is slidably connected inside the hollow block, a driving mechanism is arranged between the sliding bar and the hollow block, a probe is rotatably connected to the sliding bar, and an adjustment mechanism is arranged between the sliding bar and the probe.

[0008] The working principle of the utility model is: put the object to be tested into the test dark box, start the driving mechanism according to the actual required distance between the probe and the object to be tested, drive the slide bar to move back and forth in the hollow block, so as to adjust the distance between the probe and the object to be tested, and make the distance between each probe and the object to be tested consistent, without the need for manual adjustment by the staff, and then adjust the angle of the probe through the adjustment mechanism according to the height of the object to be tested.

[0009] The shell is provided with an installation groove, the installation groove is connected with the sliding port, the installation groove is provided with two circular grooves, a motor 1 is fixed in the circular groove, a lead screw is fixed on the output shaft end of the motor 1, a connecting frame is threadedly connected to the lead screw, and the connecting frame is fixedly connected to the hollow block.

[0010] With the above structure, by installing the lead screw and the connecting frame, starting the motor to drive the lead screw to rotate, the connecting frame on the lead screw drives the hollow block to move up and down, so that the probe on the slide bar can be adjusted in height as needed.

[0011] The driving mechanism includes a mounting plate fixed on the front end of the hollow block, a second motor is fixed on the mounting plate, a gear is fixed on the output shaft end of the second motor, a long strip opening is opened on the hollow block, a rack extending from the long strip opening is fixed on the slide bar, and the gear is meshingly connected with the rack.

[0012] With the above structure, by installing the gear and the rack, starting the motor 2, driving the gear to rotate, the gear drives the slider on the rack to move back and forth in the hollow block, so as to adjust the distance between the probe and the object to be measured as needed, and no manual operation is required by the staff, so that the distance between each probe and the object to be measured is kept consistent.

[0013] The adjustment mechanism includes a notch opened at the front end of the slide bar, an electric telescopic rod is hingedly connected in the notch, a fixed column is fixed in the notch, a fixed rod is rotatably connected to the fixed column, the rear end of the fixed rod is hingedly connected to the telescopic end of the electric telescopic rod, and the front end of the fixed rod is fixedly connected to the probe.

[0014] With the above structure, by installing a fixed rod and an electric telescopic rod, starting the electric telescopic rod, when the telescopic end of the electric telescopic rod drives the rear end of the fixed rod to move upward, the front end of the fixed rod drives the probe to move downward, and when the telescopic end of the electric telescopic rod drives the rear end of the fixed rod to move downward, the front end of the fixed rod drives the probe to move upward, thereby adjusting the angle of the probe according to the size and height of the object, making the detection more accurate.

[0015] The angles between the probes are all 45 degrees.

[0016] With the above structure, the angles between the probes are all 45 degrees, so that uniform detection of each angle of the object to be tested is achieved.

[0017] Compared with the existing technology, this multi-probe OTA test black box has the following advantages:

[0018] 1. Place the object to be tested into the test dark box. According to the actual required distance between the probe and the object to be tested, start the driving mechanism to drive the slider to move back and forth in the hollow block, so as to adjust the distance between the probe and the object to be tested, and keep the distance between each probe and the object to be tested consistent. There is no need for manual adjustment by the staff. Then adjust the angle of the probe through the adjustment mechanism according to the height of the object to be tested.

[0019] 2. By installing the gear and rack, starting the second motor, driving the gear to rotate, the gear drives the slider on the rack to move back and forth in the hollow block, so that the distance between the probe and the object to be measured can be adjusted as needed, and no manual operation is required by the staff, so that the distance between each probe and the object to be measured is kept consistent.

[0020] 3. By installing the fixed rod and the electric telescopic rod, start the electric telescopic rod. When the telescopic end of the electric telescopic rod drives the rear end of the fixed rod to move upward, the front end of the fixed rod drives the probe to move downward. When the telescopic end of the electric telescopic rod drives the rear end of the fixed rod to move downward, the front end of the fixed rod drives the probe to move upward, thereby adjusting the angle of the probe according to the size and height of the object to make the detection more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0022] Figure 2 It is a cross-sectional view of the utility model.

[0023] Figure 3 It is a structural schematic diagram of the connection frame in the utility model.

[0024] Figure 4 It is a cross-sectional view of the slide bar and the hollow block in the utility model.

[0025] In the figure, 1. shell; 2. probe; 3. base; 4. sliding mouth; 5. hollow block; 6. sliding bar; 7. mounting groove; 8. motor 1; 9. lead screw; 10. connecting frame; 11. mounting plate; 12. motor 2; 13. gear; 14. long strip mouth; 15. rack; 16. notch; 17. electric telescopic rod; 18. fixing column; 19. fixing rod. DETAILED DESCRIPTION

[0026] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0027] like Figure 1-Figure 4 As shown, the multi-probe 2OTA test black box includes an outer shell 1, a probe 2 and a base 3. The outer shell 1 is fixed on the base 3. The inner wall of the outer shell 1 is provided with multiple sliding openings 4. A hollow block 5 is slidably connected to the sliding opening 4. A sliding bar 6 is slidably connected inside the hollow block 5. A driving mechanism is arranged between the sliding bar 6 and the hollow block 5. The probe 2 is rotatably connected to the sliding bar 6. An adjustment mechanism is arranged between the sliding bar 6 and the probe 2.

[0028] The object to be tested is placed in the test dark box, and the driving mechanism is started according to the actual required distance between the probe 2 and the object to be tested, and the sliding bar 6 is driven to move back and forth in the hollow block 5, so as to adjust the distance between the probe 2 and the object to be tested, and keep the distance between each probe 2 and the object to be tested consistent, without the need for manual adjustment by the staff. Then, according to the height of the object to be tested, the angle of the probe 2 is adjusted through the adjustment mechanism.

[0029] The housing 1 is provided with a mounting groove 7, which is communicated with the sliding port 4. Two circular grooves are provided in the mounting groove 7. A motor 8 is fixed in the circular groove. A lead screw 9 is fixed to the output shaft end of the motor 8. A connecting frame 10 is threadedly connected to the lead screw 9, and the connecting frame 10 is fixedly connected to the hollow block 5.

[0030] With the above structure, by installing the lead screw 9 and the connecting frame 10, starting the motor 8 to drive the lead screw 9 to rotate, the connecting frame 10 on the lead screw 9 drives the hollow block 5 to move up and down, so that the probe 2 on the slide bar 6 can be adjusted in height as needed.

[0031] The driving mechanism includes a mounting plate 11 fixed to the front end of the hollow block 5, a motor 12 is fixed on the mounting plate 11, a gear 13 is fixed to the output shaft end of the motor 12, a long strip opening 14 is opened on the hollow block 5, a rack 15 extending from the long strip opening 14 is fixed on the slide bar 6, and the gear 13 is meshingly connected with the rack 15.

[0032] With the above structure, by installing the gear 13 and the rack 15, starting the motor 12, driving the gear 13 to rotate, the gear 13 drives the slide bar 6 on the rack 15 to move back and forth in the hollow block 5, so as to adjust the distance between the probe 2 and the object to be measured as needed, and no manual operation by the staff is required, so that the distance between each probe 2 and the object to be measured is kept consistent.

[0033] The adjustment mechanism includes a slot 16 opened at the front end of the slide bar 6, an electric telescopic rod 17 is hingedly connected in the slot 16, a fixed column 18 is fixed in the slot 16, a fixed rod 19 is rotatably connected to the fixed column 18, the rear end of the fixed rod 19 is hingedly connected to the telescopic end of the electric telescopic rod 17, and the front end of the fixed rod 19 is fixedly connected to the probe 2.

[0034] With the above structure, by installing the fixed rod 19 and the electric telescopic rod 17, the electric telescopic rod 17 is started, and when the telescopic end of the electric telescopic rod 17 drives the rear end of the fixed rod 19 to move upward, the front end of the fixed rod 19 drives the probe 2 to move downward. When the telescopic end of the electric telescopic rod 17 drives the rear end of the fixed rod 19 to move downward, the front end of the fixed rod 19 drives the probe 2 to move upward, thereby adjusting the angle of the probe 2 according to the size and height of the object, making the detection more accurate.

[0035] The angle between two adjacent hollow blocks 5 is 45 degrees.

[0036] With the above structure, the angle between two adjacent hollow blocks 5 is 45 degrees, so that uniform detection of each angle of the object to be detected is achieved.

[0037] The working principle of the utility model is as follows: put the object to be tested into the test dark box, and according to the actual required distance between the probe 2 and the object to be tested, start the motor 2 12 to drive the gear 13 to rotate, and the gear 13 drives the slide bar 6 on the rack 15 to move back and forth in the hollow block 5, and then according to the height of the object to be tested, start the motor 1 8 to drive the lead screw 9 to rotate, and the connecting frame 10 on the lead screw 9 drives the hollow block 5 to move up and down, and the probe 2 on the slide bar 6 adjusts the height as needed, and starts the electric telescopic rod 17. When the telescopic end of the electric telescopic rod 17 drives the rear end of the fixed rod 19 to move upward, the front end of the fixed rod 19 drives the probe 2 to move downward, and when the telescopic end of the electric telescopic rod 17 drives the rear end of the fixed rod 19 to move downward, the front end of the fixed rod 19 drives the probe 2 to move upward, thereby adjusting the angle of the probe 2.

[0038] In summary, the driving mechanism can achieve the function of keeping the distance between each probe and the object to be tested consistent without the need for the staff to manually adjust the distance between the test probe and the object to be tested.

[0039] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A multi-probe OTA test black box, comprising a housing (1), a probe (2) and a base (3), characterized in that: A shell (1) is fixed on the base (3), a plurality of sliding openings (4) are provided on the inner wall of the shell (1), a hollow block (5) is slidably connected to the sliding opening (4), a sliding bar (6) is slidably connected inside the hollow block (5), a driving mechanism is provided between the sliding bar (6) and the hollow block (5), a probe (2) is rotatably connected to the sliding bar (6), and an adjustment mechanism is provided between the sliding bar (6) and the probe.

2. A multi-probe OTA test black box according to claim 1, characterized in that: The housing (1) is provided with a mounting groove (7), the mounting groove (7) being connected to the sliding opening (4), the mounting groove (7) having two circular grooves, a motor (8) being fixed in the circular groove, a lead screw (9) being fixed at the output shaft end of the motor (8), a connecting frame (10) being threadedly connected to the lead screw (9), and the connecting frame (10) being fixedly connected to the hollow block (5).

3. A multi-probe OTA test black box according to claim 1, characterized in that: The driving mechanism comprises a mounting plate (11) fixed to the front end of the hollow block (5), a second motor (12) being fixed on the mounting plate (11), a gear (13) being fixed to the output shaft end of the second motor (12), a long strip opening (14) being opened on the hollow block (5), a rack (15) extending from the long strip opening (14) being fixed on the slide bar (6), and the gear (13) being meshingly connected with the rack (15).

4. A multi-probe OTA test dark box according to claim 1, characterized in that: The adjustment mechanism comprises a notch (16) provided at the front end of the slide bar (6), an electric telescopic rod (17) being hingedly connected in the notch (16), a fixing column (18) being fixed in the notch (16), a fixing rod (19) being rotatably connected to the fixing column (18), a rear end of the fixing rod (19) being hingedly connected to the telescopic end of the electric telescopic rod (17), and a front end of the fixing rod (19) being fixedly connected to the probe (2).

5. The multi-probe OTA test black box according to claim 1, characterized in that: The included angle between two adjacent hollow blocks (5) is 45 degrees.

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