AIP antenna automatic test workbench and electrical test technology thereof

Abstract

The invention relates to the field of microwave antenna test systems, in particular to an AIP antenna automatic test workbench which comprises a workbench, and the top of the workbench is provided with a test frame, a carrier plate motion module, a broadband coaxial probe module, a visual positioning detection module and a test system module. An electric control cabinet is arranged at the bottom of the workbench, and a case and a manual control screen are arranged on the side. According to the AIP antenna automatic test workbench and the electrical testing process thereof, through cooperative arrangement of the carrier plate motion module and the visual positioning detection module, the equipment can realize automatic continuous testing of multiple products, and the electrical characteristics of the products are judged to be qualified through the test system, so that the test efficiency of the products is effectively improved; wherein the carrier plate movement module adsorbs the back surface of a product through a negative pressure suction nozzle to realize soft contact with the product; the invention aims to provide an efficient solution for AIP antenna testing, the scheme has the characteristics of high speed, accuracy and stability, and the efficiency and accuracy of manual operation in the existing production environment can be greatly improved.

Description

Technical Field

[0001] The invention relates to the field of microwave antenna testing, in particular to an AIP antenna automatic testing workbench and an electrical testing process thereof. Background Art

[0002] With the rapid rise of wireless communication technology, the demand for related products is increasing. As one of the communication products, AIP antennas are facing the pressure of a sharp increase in production capacity. In the production and manufacturing of AIP antennas, their electrical characteristics need to be tested. The common detection method is to use a probe station for electrical testing. The main function of the probe station is to fix the part to be tested and accurately position it. The operator manually installs the probe arm and probe into the manipulator and uses a microscope to place the probe tip in the correct position on the part to be tested. Once all probe tips are set in the correct position, the electrical characteristic parameter detection of the part to be tested can be completed with the vector network analyzer.

[0003] However, the probe station based on AIP antenna testing on the market is basically an independent platform, which mostly adopts semi-automatic or manual mode, that is, the products need to be manually loaded one by one, and then manually replaced after the test is completed. Its production efficiency is low, and it is not convenient for mass production of products. In addition, for some existing probe stations, its movement mode is that the platform adsorbs the product and remains stationary, and the probe is manually cranked through a screw rod to ensure contact with the test piece, which can easily cause pressure loss at the measuring point and affect the accuracy of electrical measurement. Therefore, in view of the above problems, the present invention provides an AIP antenna automatic test workbench and its electrical measurement process, aiming to improve production efficiency and stability. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides an AIP antenna automatic test workbench and its electrical measurement process, which has the advantages of stable clamping, efficient electrical measurement, NG judgment, data storage and high compatibility, and solves the problems of low labor efficiency, low compatibility and easy crushing of products in traditional probe stations.

[0005] In order to achieve the above-mentioned purposes of stable clamping, efficient electrical measurement, NG judgment, data storage and high compatibility, the present invention provides the following technical solutions: an AIP antenna automatic test workbench, comprising a workbench, the top of which is provided with a test frame, a carrier motion module, a wide-band coaxial probe module, a visual positioning detection module and a test system module, a total of 5 main function modules, wherein an absorbing material plate is arranged in the middle part of the carrier motion module, a detection monitoring display screen is installed on the side of the test frame, and auxiliary functional components include an electric control cabinet arranged at the bottom of the workbench, and a machine box and a manual control screen are arranged on the side.

[0006] Preferably, the test stand is composed of a bottom plate, a support column and a top plate. The bottom plate is made of Q235 material with a thickness of 10 mm, is machined and formed, and is stably fastened and mounted on the workbench with the help of combination screws. One end of the support column is fixedly mounted on the bottom plate, and the other end is firmly connected to the top plate by the combination screws to ensure the stability and reliability of the overall structure.

[0007] Preferably, the carrier motion module is composed of a plurality of key components, specifically including an X-axis servo transmission mechanism, a Y-axis servo transmission mechanism, a limit device, a support frame, a carrier clamping platform and a device carrier. In this structure, the Y-axis servo transmission mechanism is installed on the bottom plate of the test frame, and the X-axis servo transmission mechanism is carefully erected on the Y-axis servo transmission mechanism through the support frame. The two realize electronic control association through their respective servo systems, and then realize any precise movement in the X / Y plane within the working range. In order to ensure the safety of the servo transmission mechanism in the working state, each transmission mechanism is equipped with a limit device to effectively prevent movement beyond the working range. The carrier clamping platform is arranged above the X-axis servo transmission mechanism and keeps synchronous movement with it to ensure stability and consistency during the movement. The device carrier is placed on the carrier clamping platform, and its main function is to carry and fix the product to be tested. In order to realize the precise adsorption and positioning of the device, each device placement position on the carrier is provided with an independent suction nozzle, and the exhaust function is realized through the one-way air outlet valve installed on the side, thereby generating negative pressure and firmly adsorbing the device on the carrier.

[0008] Preferably, the broadband coaxial probe module integrates key elements such as a mounting frame, a Z-axis servo transmission mechanism, a probe mounting plate, a test interface, and a broadband coaxial probe assembly. The mounting frame is placed on the left side of the top plate of the test frame, and a high-performance Z-axis servo transmission mechanism is arranged on its vertical surface. The slider end of the Z-axis servo transmission mechanism is provided with a probe mounting plate to support and fix the key components required for the test. A test interface is arranged on the probe mounting plate for testing cable interconnection. The broadband coaxial probe assembly is arranged on the probe mounting plate, based on an open mounting structure. The probe assembly can be replaced according to products of different frequency bands.

[0009] Preferably, the visual positioning detection module is composed of the following components: a mounting frame, a hanging plate, a CCD camera, a 130x high-definition lens, and an aperture lamp. The mounting frame is installed in the right area of ​​the top plate of the test frame, and a special hanging plate is provided at the top bracket end to fix the CCD camera and the 130x high-definition lens below it. In addition, the visual positioning detection module is effectively interconnected with the PLC in the electric control cabinet to achieve precise control and data interaction. An aperture lamp is provided on the bottom bracket part of the mounting frame to provide the necessary lighting conditions to ensure the clarity and integrity of the visual positioning detection image.

[0010] Preferably, the test system module mainly includes a vector network analyzer and a test cable. The vector network analyzer is set in the left area of ​​the top plate of the test frame, and a stable connection is achieved through the test cable and the test interface reserved on the probe mounting plate to collect the required test electrical characteristic data. In addition, the vector network analyzer is also integrated with the PC chassis through the I / O interface to ensure the coordinated operation of the overall test system.

[0011] An electrical testing process of an AIP antenna automatic test bench includes the following steps:

[0012] S1: Manual loading, the carrier clamping table moves the device carrier to the loading position through the X-axis servo transmission mechanism and the Y-axis servo transmission mechanism, and manually loads the entire tray of products into the corresponding slot of the device carrier, and moves it to the position to be tested through the carrier motion module;

[0013] S2: Visual inspection: the visual positioning inspection module determines that the measuring point of the product to be tested is located under the broadband coaxial probe assembly, turns on negative pressure adsorption, and then starts the broadband coaxial probe module to work;

[0014] S3: Product electrical characteristics test: First, through the visual calibration and visual guidance of the CCD camera on the visual positioning detection module, the Z-axis servo transmission mechanism is tracked in real time, the broadband coaxial probe assembly is lowered to the product measurement point position, and the test system module is started to perform electrical characteristics test;

[0015] S4: Test judgment and record preservation. The test system determines whether the product test results are qualified and generates a record data table. At the same time, the NG products are automatically recorded with the position number;

[0016] S5: Automatic continuous test. After completing the test of the product at position 1-1, the visual calibration and visual guidance of the CCD camera on the visual positioning detection module are used to track the Z-axis servo transmission mechanism in real time. The wide-band coaxial probe assembly is raised. After reaching position 0, the carrier motion module moves until the product at position 1-2 reaches the test position, and so on, for a total of 6*6 groups of products.

[0017] S6: Manual unloading. After the test of 6*6 groups of products is completed, the test system displays the NG quantity and position number. NG products are manually screened out, and qualified parts are taken out and wait for the next batch to be loaded, completing the entire electrical testing process.

[0018] (I) Beneficial effects

[0019] Compared with the prior art, the present invention provides an AIP antenna automatic test bench and its electrical test process, which has the following features:

[0020] Beneficial effects:

[0021] 1. The AIP antenna automatic test workbench and its electrical testing process, through the carrier clamping table and the X, Y axis servo transmission mechanism, and the visual positioning detection module, can enable the equipment to realize automatic positioning testing of products. This high-speed, high-precision, low-energy motion combination module effectively improves the product detection efficiency of the equipment, in which the device carrier adsorbs the lower frame of the device through a vacuum suction nozzle to achieve soft contact with the device, and the device carrier, as an independent component, has the function of disassembly and replacement, so that the equipment can achieve compatibility with AIP antennas of different specifications, effectively expanding the product application range of the equipment, and the suction nozzle is centrally controlled by a single exhaust valve, which will not cause the air pipe to be entangled during movement.

[0022] 2. The AIP antenna automatic test bench and its electrical testing process use the visual module in the center to enable the probe to move and position accurately during the test process, ensuring that the position of each test point remains consistent, and relying on its single-time recording of test point photos, it provides an important reference for subsequent analysis of defective products. At the same time, when changing product tests, a reserved interface can be used to externally attach a pressure sensor for height teaching, so that the relative height between the probe electrode head and the electrode test points of different products remains consistent, making it easier to adjust the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a structural schematic diagram of an AIP antenna automatic test workbench proposed by the present invention.

[0024] Figure 2 The present invention discloses a test frame structure diagram of an AIP antenna automatic test workbench.

[0025] Figure 3 The present invention provides a schematic diagram of the structure of a carrier motion module of an AIP antenna automatic test workbench.

[0026] Figure 4 The present invention discloses a wide-band coaxial probe module structure diagram of an AIP antenna automatic test workbench.

[0027] Figure 5 It is a structural schematic diagram of a visual positioning detection module of an AIP antenna automatic test workbench proposed by the present invention.

[0028] Figure 6 The present invention discloses a test system module structure diagram of an AIP antenna automatic test workbench. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] See also Figures 1 to 6 , an AIP antenna automatic test workbench, includes a workbench 1, on the top of the workbench 1, a test frame 2 and a carrier motion module 3 are arranged, and the central area thereof is filled with an absorbing material plate 8. The main function of the test frame 2 is to carry a wide-band coaxial probe module 4, a visual positioning detection module 5 and a test system module 6 to ensure the smooth progress of the test process. The carrier motion module 3 is provided with a device carrier to facilitate the loading and unloading operations of the device, while ensuring the continuity of the automatic test, thereby improving the detection efficiency of the device product. The probe detection monitoring display screen 7 is installed on one side of the test frame, so that the operator can intuitively observe the position status of the wide-band coaxial probe assembly 405. The imaging position of the visual positioning detection module 5 matched therewith is also accurately aligned with the probe assembly 405 on the wide-band coaxial probe module 4;

[0031] The structure of the test stand 2 includes a bottom plate 201, a support column 202 and a top plate 203. The bottom plate 201 is a machined part made of Q235 material with a thickness of 10 mm and is firmly mounted on the workbench 1 by screws. One end of the support column 202 is connected to the bottom plate 201, and the other end is fastened to the top plate 203 by screws to ensure the stability of the overall structure.

[0032] The structure of the carrier motion module 3 includes a Y-axis servo transmission mechanism 301, an X-axis servo transmission mechanism 302, a limit device 303, a support frame 304, a carrier clamping platform 305 and a device carrier 306. The Y-axis servo transmission mechanism 301 is precisely mounted on the bottom plate 201 of the test frame 2, and the X-axis servo transmission mechanism 302 is firmly mounted on the top of the Y-axis servo transmission mechanism 301 with the help of the support frame 304. The two work together to achieve flexible movement in the X / Y plane. In order to ensure the safe operation of the equipment, each transmission mechanism is equipped with a limit device 303. The carrier clamping platform 305 is located above the X-axis servo transmission mechanism 302. The three are reasonably arranged to ensure unobstructed movement. The device carrier 306 is precisely positioned by the pins on the carrier clamping platform 305 and is stabilized by installing screws to ensure the stability of the device carrier. In addition, a one-way valve is provided on the side of the device carrier 306, and the design is used to generate negative pressure to achieve the adsorption of the device of the suction nozzle at each product position on the device carrier.

[0033] The structure of the broadband coaxial probe module 4 includes: a mounting frame 401, a Z-axis servo transmission mechanism 402, a probe mounting plate 403, a test interface 404, and a broadband coaxial probe assembly 405. The mounting frame 401 is firmly mounted on the left side of the top plate 203 of the test frame 2, and a high-precision Z-axis servo transmission mechanism 402 is configured on its vertical surface. The slider portion of the Z-axis servo transmission mechanism 402 is connected to the probe mounting plate 403, on which a test interface 404 is reserved, and a broadband coaxial probe assembly 405 is configured accordingly.

[0034] The specific composition of the visual positioning detection module 5 includes the following key components: a mounting frame 501, a hanging plate 502, a CCD camera 503, a lens 504 with 130x high-definition performance, and an aperture light 505. The mounting frame 501 is securely placed on the right side of the top plate 203 of the test frame 2 to ensure its stability. A hanging plate 502 is provided at the top bracket end of the mounting frame 501 to securely mount the CCD camera 503 and the 130x high-definition lens 504 below it to ensure the accuracy of imaging. In addition, the module has achieved a reliable connection with the PLC in the electric control cabinet to support real-time transmission and precise control of data. At the same time, an aperture light 505 is configured on the bottom bracket of the mounting frame 501 to provide sufficient and uniform lighting for visual positioning detection.

[0035] Among them, the positioning principle of the visual positioning detection module 5 is:

[0036] ① First, visual positioning detection CCD camera 503 and wide-band coaxial probe assembly 405 electrode probe are calibrated;

[0037] ② Secondly, the carrier motion module 3 moves the test piece precisely to the top of the electrode probe of the broadband coaxial probe assembly 405, and finds the electrical test point of the product through the visual positioning detection CCD camera 503;

[0038] ③ Finally, the position relationship is obtained by the visual positioning detection CCD camera 503, and the Z-axis servo transmission mechanism 402 is monitored in real time to automatically lower the electrode probe of the broadband coaxial probe assembly 405 to the electrical measurement point of the product;

[0039] The test system module 6 includes a vector network analyzer 601 and a test cable 602. The vector network analyzer 601 is set on the left side of the top plate 203 of the test frame 2, and is connected to the preset test interface 404 on the probe mounting plate 403 through the test cable 602 to collect the electrical characteristic data required for the test. After the electrode probe of the wide-band coaxial probe assembly 405 descends to the electrical test point of the product, the system starts the test, the vector network analyzer 601 is integrated with the chassis 10 through the standardized I / O interface, and the PC-side test system program starts to record the relevant electrical performance index S parameters.

[0040] The motion modules mentioned in this article are all connected to the main controller (electric control cabinet 9) and 380V mains electricity, and the main controller can be a conventional known device for controlling computers, etc. The vector network analyzer (10MHz~67GHz) is a product available on the market, including two built-in signal sources, a signal synthesizer, multiple S parameters and noise receivers, pulse modulators and generators, which can comprehensively measure various linear and nonlinear characteristics of the device. The test software is customized FutureC, which includes all characteristic parameters of test antenna products.

[0041] This embodiment also provides an electrical testing process of the above-mentioned AIP antenna automatic testing workbench, including the following steps:

[0042] S1: Manual loading, the carrier clamping platform 305 moves the device carrier 306 to the loading position through the X-axis servo transmission mechanism 302 and the Y-axis servo transmission mechanism 301, and manually loads the entire tray of products into the corresponding slot of the device carrier 306, and moves it to the position to be tested through the carrier motion module 3;

[0043] S2: Visual inspection: the visual positioning inspection module 5 determines that the measuring point of the product to be tested is located below the broadband coaxial probe assembly 405, turns on negative pressure adsorption, and then starts the broadband coaxial probe module 4 to work;

[0044] S3: Product electrical characteristics test, first through the visual calibration and visual guidance of the CCD camera 503 on the visual positioning detection module 5, real-time tracking of the Z-axis servo transmission mechanism 402, the broadband coaxial probe assembly 405 is lowered to the product measurement point position, and the test system module 6 is started to perform electrical characteristics test;

[0045] S4: Test judgment and record preservation. The test system determines whether the product test results are qualified and generates a record data table. At the same time, the NG products are automatically recorded with the position number;

[0046] S5: Automatic continuous test. After completing the test of the product at position 1-1, the visual calibration and visual guidance of the CCD camera 503 on the visual positioning detection module 5 tracks the Z-axis servo transmission mechanism 402 in real time, and the wide-band coaxial probe assembly 405 is raised. After reaching position 0, the carrier motion module 3 moves until the product at position 1-2 reaches the test position, and so on, for a total of 6*6 groups of products;

[0047] S6: Manual unloading. After the test of 6*6 groups of products is completed, the test system displays the NG quantity and position number. NG products are manually screened out, and qualified parts are taken out and wait for the next batch to be loaded, completing the entire electrical testing process.

[0048] Although the invention has been disclosed as above in terms of preferred embodiments, the embodiments and drawings are not intended to limit the invention. Anyone familiar with the art can make various changes or modifications without departing from the spirit and scope of the invention, but they are also within the scope of protection of the invention. Therefore, the scope of protection of the invention shall be based on the scope of protection of the claims of this application.

Claims

1. An AIP antenna automatic test workbench, comprising a workbench (1), characterized in that: The top of the workbench (1) is provided with a test frame (2), a carrier motion module (3), a broadband coaxial probe module (4), a visual positioning detection module (5) and a test system module (6); a wave absorbing material plate (8) is provided in the middle of the carrier motion module (3); a detection monitoring display screen (7) is provided on one side of the test frame (2) via a mounting bracket; an electric control cabinet (9) is provided at the bottom of the workbench (1), and a chassis (10) and a hand-controlled screen (11) are provided on the side.

2. The AIP antenna automatic test workbench according to claim 1, characterized in that: The test stand (2) comprises a bottom plate (201), a support column (202), and a top plate (203); the bottom plate (201) is made of Q235 material and is a machined part with a thickness of 10 mm, and is fastened to the workbench (1) by screws; one end of the support column (202) is mounted on the bottom plate (201), and the other end is fastened to the top plate (203) by screws.

3. The AIP antenna automatic test workbench according to claim 2, characterized in that: The carrier motion module (3) comprises a Y-axis servo transmission mechanism (301), an X-axis servo transmission mechanism (302), a limit device (303), a support frame (304), a carrier clamping platform (305) and a device carrier (306), wherein the Y-axis servo transmission mechanism (301) is mounted on the bottom plate (201) of the test frame (2), and the X-axis servo transmission mechanism (302) is mounted above the Y-axis servo transmission mechanism (301) through the support frame (304), and the two are combined to form an X / Y plane. The device can be moved arbitrarily, and the safety of the device movement is ensured by the limit devices (303) on each transmission mechanism. The carrier clamping platform (305) is installed above the X-axis servo transmission mechanism (302), and the three are arranged in different planes to ensure unobstructed movement. The device carrier (306) is positioned by the pins on the carrier clamping platform (305) and fastened by the mounting screws. A one-way valve is arranged on the side of the device carrier (306) for the suction nozzles at each product position on the device carrier (306) to generate negative pressure to adsorb the device.

4. The AIP antenna automatic test workbench according to claim 2, characterized in that: The broadband coaxial probe module (4) comprises: a mounting frame (401), a Z-axis servo transmission mechanism (402), a probe mounting plate (403), a test interface (404), and a broadband coaxial probe assembly (405). The mounting frame (401) is mounted on the left side of a top plate (203) of a test frame (2), and a Z-axis servo transmission mechanism (402) is arranged on a vertical surface thereof. A probe mounting plate (403) is arranged at a slider end of the Z-axis servo transmission mechanism (402), and a test interface (404) is reserved on the probe mounting plate (403), and a broadband coaxial probe assembly (405) is arranged synchronously therewith.

5. The AIP antenna automatic test workbench according to claim 2, characterized in that: The visual positioning detection module (5) comprises: a mounting frame (501), a hanging plate (502), a CCD camera (503), a 130x high-definition lens (504), and an aperture light (505). The mounting frame (501) is mounted on the right side of the top plate (203) of the test frame (2). The hanging plate (502) is arranged at the top bracket end thereof for mounting the CCD camera (503) and the 130x high-definition lens (504) below, and is connected to the PLC in the electric control cabinet. The aperture light (505) is arranged at the bottom bracket of the mounting frame (501).

6. The AIP antenna automatic test workbench according to claim 2, characterized in that: The test system module (6) comprises: a vector network analyzer (601) and a test cable (602); the vector network analyzer (601) is arranged on the left side of a top plate (203) of a test frame (2), and is interconnected with a test interface (404) reserved on a probe mounting plate (403) via the test cable (602) to collect test electrical characteristics; the vector network analyzer (601) is interconnected with a chassis (10) via an I / O interface.

7. The electrical testing process of the AIP antenna automatic testing workbench according to any one of claims 1 to 6, characterized in that: It includes the following steps: S1: Manual loading: the carrier clamping platform (305) moves the device carrier (306) to the loading position through the X-axis servo transmission mechanism (302) and the Y-axis servo transmission mechanism (301), and manually loads the entire tray of products into the corresponding slot of the device carrier (306), and moves it to the position to be tested through the carrier motion module (3); S2: visual inspection, the visual positioning inspection module (5) determines that the measuring point of the product to be tested is located below the broadband coaxial probe assembly (405), starts negative pressure adsorption, and then starts the broadband coaxial probe module (4); S3: Product electrical characteristics testing, first through visual calibration and visual guidance of the CCD camera (503) on the visual positioning detection module (5), real-time tracking of the Z-axis servo drive mechanism (402), lowering the broadband coaxial probe assembly (405) to the product measurement point position, and starting the test system module (6) to perform electrical characteristics testing; S4: Test judgment and record preservation. The test system determines whether the product test results are qualified and generates a record data table. At the same time, the NG products are automatically recorded with the position number; S5: Automatic continuous testing. After completing the test of the product at position 1-1, the visual calibration and visual guidance of the CCD camera (503) on the visual positioning detection module (5) are performed to track the Z-axis servo transmission mechanism (402) in real time, and the wide-band coaxial probe assembly (405) is raised. After reaching position 0, the carrier motion module (3) moves until the product at position 1-2 reaches the test position, and so on, for a total of 6*6 groups of products; S6: Manual unloading. After the test of 6*6 groups of products is completed, the test system displays the NG quantity and position number. NG products are manually screened out, and qualified parts are taken out and wait for the next batch to be loaded, completing the entire electrical testing process.

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