A test module and a signal test method

Abstract

The present invention aims to provide a test module and a signal testing method with a compact structure, low cost and high instrument utilization rate. The test module includes a signal transceiver and a plurality of reflection components arranged in a shielding box. The signal transceiver is aligned with one of the signal transceiver ends of the product under test, and the plurality of reflection components are respectively and correspondingly matched with the remaining signal transceiver ends of the product under test. The reflection components reflect the signals of the signal transceiver ends to the signal transceiver; the signal testing method includes the following steps: S1. Adjust the angles and positions of the signal transceiver and the plurality of reflection components so that the signals emitted by all signal transceiver ends can be accurately reflected to the receiving point of the signal transceiver; S2. Control the switching of signal ports through a test system to test each signal transceiver end of the product under test one by one. The present invention is applied to the technical field of communication testing.

Description

Technical Field

[0001] The present invention is applied to the technical field of communication testing, and particularly relates to a test module and a signal testing method. Background Art

[0002] Portable electronic products are provided with communication antennas for communication. In order to improve communication quality, multiple communication antennas are usually provided. During the production process, it is necessary to test the electronic products. In order to reduce external interference, the test equipment needs to be placed in a shielding box. Currently, there are two common test methods in the industry: 1. Adopting a multi-point to multi-point method, where one test antenna corresponds to one antenna under test; 2. Adopting a product rotation method, flipping the product so that the test antenna aligns with each antenna under test in turn. For the first test scheme, multiple test antennas are required, resulting in a high cost. Since millimeter-wave testing uses far-field testing, the distance between antennas must be greater than a certain specific value, so the shielding box of this scheme is relatively large, which is not friendly to the production line, especially in the case of a large number of antennas under test, such as in the 5G communication testing field. For the second test scheme, although it can solve the cost problem of the first scheme, due to the large time consumption during the switching process, the utilization rate of the instrument is not high, which is easy to cause waste. At the same time, the fixture structure is relatively complex and a large number of metal devices are used, which is not conducive to radio frequency testing. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a test module and a signal testing method with a compact structure, low cost, and high instrument utilization rate.

[0004] The technical solution adopted by the present invention is that the test module includes a signal transceiver and a plurality of reflection components arranged in a shielding box. The signal transceiver is aligned with one of the signal transceiver ends of the product under test, and the plurality of reflection components are in one-to-one correspondence and cooperation with the remaining signal transceiver ends of the product under test. The reflection components reflect the signals of the signal transceiver ends to the signal transceiver.

[0005] As can be seen from the above solution, the test is carried out by directly aligning the signal transceiver with one of the signal transceiver ends, and the signals of the remaining signal transceiver ends of the product under test are reflected to the signal transceiver through the plurality of reflection components to achieve signal testing. By adopting the method of reflecting signals, the communication distance is extended to meet the requirements of far-field testing, and at the same time, the requirement for the volume of the shielding wire is reduced, which is convenient for the setting of the production line. Using a single signal transceiver to complete signal testing reduces the test cost. At the same time, all signal transceiver ends can be tested without moving the product under test or the signal transceiver, and the idle time of the signal transceiver is less and the utilization rate is high.

[0006] In a preferred embodiment, a product pallet is provided inside the shielding box, the signal transceiver is located above the product pallet, and a plurality of the reflection components are at the same horizontal height as the product pallet.

[0007] As can be seen from the above solution, the product pallet is provided to support and position the product to be tested. By arranging a plurality of the reflection components at the same horizontal height as the product pallet, signal reflection to the signal transceiver end arranged on the side of the product to be tested is realized.

[0008] In a preferred embodiment, the reflection component includes a reflecting mirror and a three-axis adjustment structure, and the reflecting mirror is connected to the movable end of the three-axis adjustment structure.

[0009] As can be seen from the above solution, the reflecting mirror is used to reflect signal waves. By arranging the three-axis adjustment structure, the position of the reflecting mirror is adjusted.

[0010] A further preferred embodiment is that the three-axis adjustment structure includes a mounting plate, an X-axis sliding pillar, and a Y-axis slider. The mounting plate is fixed on the side wall of the shielding box. A linear sliding groove adapted to the X-axis sliding pillar is provided on the mounting plate. A Z-axis lifting guide post is provided at one end of the X-axis sliding pillar away from the mounting plate. The Y-axis slider is slidably fitted on the Z-axis lifting guide post. A linear slide rail is provided on the Y-axis slider, and the reflecting mirror is slidably fitted on the linear slide rail.

[0011] As can be seen from the above solution, through the cooperation between the X-axis sliding pillar and the mounting plate, and the cooperation between the reflecting mirror and the linear slide rail, the position adjustment of the reflecting mirror on the horizontal plane is realized. Through the cooperation between the Y-axis slider and the Z-axis lifting guide post, the position adjustment of the reflecting mirror in the vertical direction is realized. A first fastening screw adapted to the linear sliding groove is provided on the X-axis sliding pillar. A second fastening screw adapted to the linear guide rail is provided on the reflecting mirror. A third fastening screw adapted to the Z-axis lifting guide post is provided on the Y-axis slider.

[0012] A further preferred embodiment is that the reflecting mirror is connected to the three-axis adjustment structure through an angle adjustment structure. The angle adjustment structure includes a connecting block and a spherical joint. Two ends of the spherical joint are respectively connected to the reflecting mirror and the connecting block.

[0013] As can be seen from the above solution, by arranging the angle adjustment structure, the angle of the reflecting mirror can be adjusted according to requirements, so as to ensure that the signal can be accurately reflected to the signal transceiver. By using a spherical joint as the angle adjustment mechanism, the adjustable range of the reflecting mirror is greatly increased to meet the adjustment requirements.

[0014] A further preferred solution is that the spherical joint includes a ball shaft and a ball seat sliding sleeve that are fitted and connected. An adjusting rod is provided on the connecting block. The ball seat sliding sleeve is slidably fitted on the adjusting rod, and a fastening screw cooperating with the adjusting rod is provided on the ball seat sliding sleeve.

[0015] As can be seen from the above solution, by setting the cooperation between the adjusting rod and the ball seat sliding sleeve, the distance between the reflector and the product to be tested is adjusted, and the adjustable range of the reflector is increased. After adjustment, the fixation between the adjusting rod and the ball seat sliding sleeve is achieved through the fastening screw.

[0016] The signal testing method includes the following steps:

[0017] S1. Adjust the angle and position of the signal transceiver so that the signal transceiver is located in the emission dead zone of each signal transceiver end of the product to be tested, and align the signal transceiver with one of the signal transceiver ends of the product to be tested.

[0018] S2. Then load and fix the simulated product provided with a laser emitter. The laser emitter on the simulated product emits laser light. By adjusting the angle and position of the corresponding reflection component, the calibrated reflection component reflects the laser light emitted by the laser emitter to the receiving point of the signal transceiver.

[0019] S3. Compare the spatial attenuation of each signal path so that the extreme difference is less than 15 dB, and the interference of each group of the reflection components on other signal paths is less than 20 dB.

[0020] S4. After completion of the adjustment, take out the simulated product.

[0021] S5. Place the product to be tested, and through the test system, switch the signal ports to test each signal transceiver end of the product to be tested one by one.

[0022] As can be seen from the above solution, by setting the signal transceiver in the emission dead zone of each signal transceiver end of the product to be tested, the interference of the remaining signals is reduced. By adjusting the positions of the signal transceiver and several of the reflection components, the signals emitted by each signal transceiver end finally converge at the same point, achieving the effect of communicating with the signal transceiver evenly, thereby improving the communication quality and the test effect. By using a simulated product provided with a laser emitter to adjust the instrument angle, the test quality is ensured. By switching the signal ports through software, the testing of different signal transceiver ends one by one is realized. Description of the Drawings

[0023] Figure 1 is a schematic structural view of the present invention after removing part of the box wall;

[0024] Figure 2It is a three-dimensional structure schematic diagram of the first perspective of the reflection component;

[0025] Figure 3 It is a three-dimensional structure schematic diagram of the second perspective of the reflection component. Specific implementation manners

[0026] As Figures 1 to 3 shown, in this embodiment, the test module includes a signal transceiver 2 disposed in a shielding box 1 and a plurality of reflection components 3. The signal transceiver 2 is aligned with one of the signal transceiver ends of the product to be tested, and the plurality of reflection components 3 are respectively and correspondingly matched with the remaining signal transceiver ends of the product to be tested. The reflection components 3 reflect the signals of the signal transceiver ends to the signal transceiver 2.

[0027] In this embodiment, a product support plate 4 is provided in the shielding box 1. The signal transceiver 2 is located above the product support plate 4, and the plurality of reflection components 3 are at the same horizontal height as the product support plate 4. The signal transceiver 2 is located in the emission static area of each signal transceiver end of the product to be tested.

[0028] In this embodiment, a shielding door and a support slide rail are provided on the shielding box 1. An inlet / outlet adapted to the product support plate 4 is further provided on the shielding box 1. The shielding door is disposed at the inlet / outlet, the support slide rail is fixedly connected inside the shielding box 1, and the product support plate 4 is slidably engaged with the support slide rail. By providing the support slide rail to support the product support plate 4, it is convenient for the operator to send the product to be tested into the shielding box 1 at the same time.

[0029] The reflection component 3 can be of a fixed integral structure or a structure that can adjust the position and height as needed. In this embodiment, the reflection component 3 is provided with a three-axis adjustment structure.

[0030] In this embodiment, the reflection component 3 includes a reflector 5 and a three-axis adjustment structure. The reflector 5 is connected to the movable end of the three-axis adjustment structure. The mirror surface of the reflector 5 is provided with a smooth gold plating layer.

[0031] In this embodiment, the three-axis adjustment structure includes a mounting plate 6, an X-axis sliding pillar 7, and a Y-axis slider 8. The mounting plate 6 is fixed on the side wall of the shielding box 1. A linear sliding groove 9 adapted to the X-axis sliding pillar 7 is provided on the mounting plate 6. One end of the X-axis sliding pillar 7 away from the mounting plate 6 is provided with a Z-axis lifting guide post 10. The Y-axis slider 8 is slidably fitted on the Z-axis lifting guide post 10. A linear slide rail 11 is provided on the Y-axis slider 8. The reflecting mirror 5 is slidably fitted on the linear slide rail 11. A first fastening screw adapted to the linear sliding groove is provided on the X-axis sliding pillar. A second fastening screw adapted to the linear guide rail is provided on the reflecting mirror 5. A third fastening screw adapted to the Z-axis lifting guide post is provided on the Y-axis slider.

[0032] The reflecting mirror 5 can be a structure with a fixed and unadjustable angle or a structure with an adjustable angle according to needs. In this embodiment, an angle adjustment structure is provided.

[0033] In this embodiment, the reflecting mirror 5 is connected to the three-axis adjustment structure through an angle adjustment structure. The angle adjustment structure includes a connecting block 12 and a spherical joint. Two ends of the spherical joint are respectively connected to the reflecting mirror 5 and the connecting block 12. The spherical joint includes a ball shaft 13 and a ball seat sliding sleeve 14 that are fitted and connected. An adjustment rod is provided on the connecting block 12. The ball seat sliding sleeve 14 is slidably fitted on the adjustment rod. A fastening screw adapted to the adjustment rod is provided on the ball seat sliding sleeve 14.

[0034] In this embodiment, the product to be tested is provided with a total of three signal transceiver terminals, and the test module is provided with a total of two sets of the reflecting components. The signal transceiver 2 is aligned with one of the signal transceiver terminals of the product to be tested, and the two sets of the reflecting components 3 are respectively and correspondingly matched with the remaining two signal transceiver terminals of the product to be tested.

[0035] The signal testing method includes the following steps:

[0036] S1. Adjust the angle and position of the signal transceiver 2 so that the signal transceiver 2 is located in the emission static area of each signal transceiver terminal of the product to be tested, and adjust the signal transceiver 2 to be aligned with one of the signal transceiver terminals of the product to be tested;

[0037] S2. Then load and fix the simulated product provided with the laser emitter, and emit laser light from the laser emitter on the simulated product. By adjusting the angle and position of the corresponding reflecting component 3, make the calibrated reflecting component 3 reflect the laser light emitted by the laser emitter to the receiving point of the signal transceiver 2;

[0038] S3. Compare the spatial attenuation of each signal path to make the extreme difference less than 15 dB, and the interference of each pair of the reflection components 2 to other signal paths less than 20 dB;

[0039] S4. Take out the analog product after the adjustment is completed;

[0040] S5. Place the product to be tested, switch the signal ports through the test system, and test each signal transceiver of the product to be tested one by one.

Claims

1. A signal testing method is implemented through a testing module. The testing module includes a signal transceiver (2) and a plurality of reflection components (3) disposed in a shielding box (1). The signal transceiver (2) is aligned with one of the signal transceiver ends of the product to be tested, and the plurality of reflection components (3) are respectively and correspondingly matched with the remaining signal transceiver ends of the product to be tested. The reflection components (3) reflect the signals of the signal transceiver ends to the signal transceiver (2), and it is characterized in that, The signal testing method includes the following steps: S1. Adjust the angle and position of the signal transceiver (2) so that the signal transceiver (2) is located in the emission dead zone of each signal transceiver end of the product to be tested, and adjust the signal transceiver (2) to align with one of the signal transceiver ends of the product to be tested; S2. Then load and fix the simulation product provided with a laser emitter, and let the laser emitter on the simulation product emit laser. By adjusting the angle and position of the corresponding reflection component (3), make the calibrated reflection component (3) reflect the laser emitted by the laser emitter to the receiving point of the signal transceiver (2); S3. Compare the spatial attenuation of each signal path to make the extreme difference less than 15 dB, and the interference of each group of the reflection components (3) to other signal paths less than 20 dB; S4. After the adjustment is completed, take out the simulation product; S5. Place the product to be tested, and through the test system, switch the signal ports, and test each signal transceiver end of the product to be tested one by one.

2. The signal testing method according to claim 1, characterized in that: A product support plate (4) is provided in the shielding box (1). The signal transceiver (2) is located above the product support plate (4), and several reflection components (3) are at the same horizontal height as the product support plate (4).

3. A signal testing method according to claim 1, characterized in that: The reflection component (3) includes a reflecting mirror (5) and a three-axis adjustment structure, and the reflecting mirror (5) is connected to the movable end of the three-axis adjustment structure.

4. The signal testing method according to claim 3, wherein: The three-axis adjustment structure includes a mounting plate (6), an X-axis sliding support (7), and a Y-axis slider (8). The mounting plate (6) is fixed on the side wall of the shielding box (1). A linear sliding groove (9) adapted to the X-axis sliding support (7) is provided on the mounting plate (6). One end of the X-axis sliding support (7) away from the mounting plate (6) is provided with a Z-axis lifting guide post (10). The Y-axis slider (8) is slidably engaged with the Z-axis lifting guide post (10). A linear slide rail (11) is provided on the Y-axis slider (8), and the reflecting mirror (5) is slidably engaged with the linear slide rail (11).

5. The signal testing method according to claim 3, wherein: The reflecting mirror (5) is connected to the three-axis adjustment structure through an angle adjustment structure. The angle adjustment structure includes a connecting block (12) and a spherical joint. Two ends of the spherical joint are respectively connected to the reflecting mirror (5) and the connecting block (12).

6. A signal testing method according to claim 5, characterized in that: The spherical joint includes a ball shaft (13) and a ball seat sliding sleeve (14) that are fitted and connected. An adjusting rod is provided on the connecting block (12). The ball seat sliding sleeve (14) is slidably engaged with the adjusting rod, and a fastening screw adapted to the adjusting rod is provided on the ball seat sliding sleeve (14).

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