CN112649697A - Test module and signal test method - Google Patents
Test module and signal test method Download PDFInfo
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- CN112649697A CN112649697A CN202011376806.2A CN202011376806A CN112649697A CN 112649697 A CN112649697 A CN 112649697A CN 202011376806 A CN202011376806 A CN 202011376806A CN 112649697 A CN112649697 A CN 112649697A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
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Abstract
The invention aims to provide a test module and a signal test method which have the advantages of compact structure, low cost and high instrument utilization rate. The test module comprises a signal transceiver and a plurality of reflection assemblies, wherein the signal transceiver is arranged in the shielding box and is aligned with one signal transceiving end of a product to be tested, the plurality of reflection assemblies are in one-to-one corresponding fit with the other signal transceiving ends of the product to be tested, and the reflection assemblies reflect signals of the signal transceiving ends to the signal transceiver; the signal testing method comprises the following steps: s1, adjusting angles and positions of the signal transceiver and the plurality of reflecting assemblies to enable signals sent by all signal transceiver ends to be accurately reflected to receiving points of the signal transceiver; and S2, controlling the switching of the signal ports through the test system, and testing the signal receiving and transmitting ends of the product to be tested one by one. The invention is applied to the technical field of communication test.
Description
Technical Field
The invention is applied to the technical field of communication test, and particularly relates to a test module and a signal test method.
Background
Portable electronic products are provided with a communication antenna for performing communication, and a plurality of communication antennas are generally provided in order to improve communication quality. The electronic product is required to be tested in the production process, and the testing equipment is required to be arranged in the shielding box for reducing the external interference. There are two types of testing methods currently used in the industry: 1. one test antenna corresponds to one antenna to be tested in a multipoint-to-multipoint mode; 2. and turning over the product in a product rotation mode to enable the test antennas to be aligned to the antennas to be tested in turn. For the first test scheme, multiple test antennas are needed, the cost is high, far-field tests are used for millimeter wave tests, and the distance between the antennas must be larger than a certain specific value, so that the size of the shielding box body of the scheme is large, the production line is not friendly, and particularly under the condition that the number of antennas to be tested is large, such as the field of 5G communication tests. For the second test scheme, although the cost problem of the first scheme can be solved, the switching process is time-consuming, the utilization rate of the instrument is low, waste is easily caused, and meanwhile, the clamp structure is complex, a large number of metal devices can be used, and radio frequency test is not facilitated.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a test module and a signal test method which have the advantages of compact structure, low cost and high instrument utilization rate.
The technical scheme adopted by the invention is as follows: the test module comprises a signal transceiver and a plurality of reflection assemblies, wherein the signal transceiver is arranged in the shielding box and is aligned to one signal transceiving end of a product to be tested, the reflection assemblies are matched with the other signal transceiving ends of the product to be tested in a one-to-one correspondence mode, and the reflection assemblies reflect signals of the signal transceiving ends to the signal transceiver.
According to the scheme, the signal transceiver is directly aligned with one signal receiving and transmitting end for testing, and the signals of the other signal receiving and transmitting ends of the product to be tested are reflected by the signal transceiver through the plurality of reflecting assemblies to realize signal testing. The communication distance is prolonged by adopting a signal reflection mode, the requirement of far-field test is met, the requirement on the volume of the shielding wire is reduced, and the production line is convenient to set. And a single signal transceiver is adopted to complete signal testing, so that the testing cost is reduced. Meanwhile, the test of all signal receiving and transmitting ends can be finished without moving a product to be tested or a signal transceiver, and the signal transceiver has the advantages of short idle time and high utilization rate.
Preferably, a product supporting plate is arranged in the shielding box, the signal transceiver is located above the product supporting plate, and the plurality of reflecting assemblies and the product supporting plate are located at the same horizontal height.
According to the scheme, the product supporting plate is used for supporting and limiting the product to be detected. The reflecting assemblies are arranged at the same horizontal height with the product supporting plate, so that signal reflection is carried out on the signal receiving and transmitting end arranged on the side face of the product to be detected.
Preferably, the reflection assembly comprises a reflector and a three-axis adjustment structure, wherein the reflector is connected to the movable end of the three-axis adjustment structure.
As can be seen from the above, the mirror is used to reflect the signal wave. The position of the reflector is adjusted by arranging the three-axis adjusting structure.
A further preferred scheme is that the three-axis adjusting structure comprises a mounting plate, an X-axis sliding support and a Y-axis sliding block, the mounting plate is fixed on the side wall of the shielding box, a linear sliding groove matched with the X-axis sliding support is formed in the mounting plate, a Z-axis lifting guide pillar is arranged at one end, away from the mounting plate, of the X-axis sliding support, the Y-axis sliding block is in sliding fit with the Z-axis lifting guide pillar, a linear sliding rail is arranged on the Y-axis sliding block, and the reflector is in sliding fit with the linear sliding rail.
According to the scheme, the X-axis sliding support is matched with the mounting plate, and the reflector is matched with the linear sliding rail, so that the position of the reflector on the horizontal plane is adjusted. Through the matching of the Y-axis sliding block and the Z-axis lifting guide column, the position of the reflector in the vertical direction is adjusted. The X-axis sliding support is provided with a first fastening screw matched with the linear sliding groove, the reflector is provided with a second fastening screw matched with the linear guide rail, and the Y-axis sliding block is provided with a third fastening screw matched with the Z-axis lifting guide pillar.
A further preferred scheme is that the reflector is connected with the three-axis adjusting structure through an angle adjusting structure, the angle adjusting structure comprises a connecting block and a spherical joint, and two ends of the spherical joint are respectively connected with the reflector and the connecting block.
According to the scheme, the angle adjusting structure is arranged, so that the angle of the reflector can be adjusted according to requirements, and signals can be accurately reflected to the signal transceiver. The adjustable range of the reflector is greatly increased by adopting the spherical joint as an angle adjusting mechanism so as to meet the adjustment requirement.
Further preferred scheme is, the spherical joint includes ball axle and ball seat sliding sleeve of cooperation connection, be equipped with the adjusting lever on the connecting block, ball seat sliding sleeve sliding fit is in on the adjusting lever, be equipped with on the ball seat sliding sleeve with adjusting lever complex fastening screw.
According to the scheme, the adjusting rod is matched with the ball seat sliding sleeve, so that the distance between the reflector and a product to be detected is adjusted, and the adjustable range of the reflector is enlarged. After adjustment, the adjusting rod and the ball seat sliding sleeve are fixed through the fastening screw.
The signal testing method comprises the following steps:
s1, adjusting the angle and the position of the signal transceiver to enable the signal transceiver to be located in a transmitting quiet zone of each signal transceiving end of a product to be detected, and adjusting the signal transceiver to be aligned with one signal transceiving end of the product to be detected;
s2, loading and fixing the simulation product provided with the laser emitter, emitting laser by the laser emitter on the simulation product, and reflecting the laser emitted by the laser emitter to a receiving point of the signal transceiver by the calibrated reflection assembly by adjusting the angle and the position of the corresponding reflection assembly;
s3, comparing the spatial attenuation of each signal path to enable the range difference to be smaller than 15dB and the interference of each group of reflection assemblies on other signal paths to be smaller than 20 dB;
s4, taking out the simulated product after the adjustment is finished;
s5, placing the product to be tested, switching signal ports through the test system, and testing each signal receiving and transmitting end of the product to be tested one by one.
According to the scheme, the signal transceiver is arranged in the emission quiet zone of each signal transceiving end of the product to be tested, so that the interference of other signals is reduced. The positions of the signal transceiver and the plurality of reflecting assemblies are adjusted, so that signals sent by the signal transceiver ends are finally converged at the same point, the effect of communicating with the signal transceiver is achieved, and the communication quality and the test effect are improved. The angle of the instrument is adjusted by adopting the simulation product provided with the laser emitter, so that the test quality is ensured. The signal ports are switched through software, and then different signal transceiving ends are tested one by one.
Drawings
FIG. 1 is a schematic view of the present invention with a portion of the wall removed;
FIG. 2 is a schematic perspective view of the reflection assembly from a first viewing angle;
fig. 3 is a schematic perspective view of the reflection assembly from a second viewing angle.
Detailed Description
As shown in fig. 1 to 3, in this embodiment, the test module includes a signal transceiver 2 and a plurality of reflection assemblies 3 disposed in a shielding box 1, the signal transceiver 2 is aligned with one signal transceiving end of a product to be tested, the plurality of reflection assemblies 3 are in one-to-one corresponding fit with the other signal transceiving ends of the product to be tested, and the reflection assemblies 3 reflect signals of the signal transceiving ends to the signal transceiver 2.
In this embodiment, a product supporting plate 4 is disposed in the shielding box 1, the signal transceiver 2 is located above the product supporting plate 4, and the plurality of reflecting assemblies 3 and the product supporting plate 4 are located at the same horizontal height. The signal transceiver 2 is located in the emission quiet zone of each signal transceiving end of the product to be tested.
In this embodiment, be equipped with the shield door and support the slide rail on the shield box 1, still be equipped with on the shield box 1 with the exit of 4 looks adaptations of product layer board, the shield door sets up exit department, support slide rail fixed connection be in the shield box 1, 4 sliding fit of product layer board are in support on the slide rail. Through setting up it is right to support the slide rail product layer board 4 supports, and the operator of being convenient for simultaneously sends into the product that awaits measuring in the shielded cell 1.
The reflection assembly 3 may be a fixed integrated structure or a structure capable of adjusting the position and height according to the requirement, and in this embodiment, the reflection assembly 3 is provided with a three-axis adjustment structure.
In this embodiment, the reflection assembly 3 includes a reflection mirror 5 and a three-axis adjustment structure, and the reflection mirror 5 is connected to a movable end of the three-axis adjustment structure. The mirror surface of the reflector 5 is provided with a smooth gold plating layer.
In this embodiment, the three-axis adjusting structure includes a mounting plate 6, an X-axis sliding support 7 and a Y-axis sliding block 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, a Z-axis lifting guide pillar 10 is provided at one end of the X-axis sliding support 7 away from the mounting plate 6, the Y-axis sliding block 8 is in sliding fit with the Z-axis lifting guide pillar 10, a linear sliding rail 11 is provided on the Y-axis sliding block 8, and the reflector 5 is in sliding fit with the linear sliding rail 11. The X-axis sliding support is provided with a first fastening screw matched with the linear sliding groove, the reflector 5 is provided with a second fastening screw matched with the linear guide rail, and the Y-axis sliding block is provided with a third fastening screw matched with the Z-axis lifting guide pillar.
The reflector 5 may be a fixed structure that cannot be adjusted in angle, or may be a structure that can be adjusted in angle according to needs, and in this embodiment, an angle adjustment structure is provided.
In this embodiment, the reflecting mirror 5 is connected to the three-axis adjusting structure through an angle adjusting structure, the angle adjusting structure includes a connecting block 12 and a spherical joint, and two ends of the spherical joint are respectively connected to the reflecting mirror 5 and the connecting block 12. The spherical joint comprises a spherical shaft 13 and a ball seat sliding sleeve 14 which are connected in a matched mode, an adjusting rod is arranged on the connecting block 12, the ball seat sliding sleeve 14 is in sliding fit with the adjusting rod, and a fastening screw matched with the adjusting rod is arranged on the ball seat sliding sleeve 14.
In this embodiment, the product to be tested has three signal transceiving ends, and the test module has two sets of the reflective modules. The signal transceiver 2 is aligned with one signal transceiving end of the product to be tested, and the two groups of reflecting assemblies 3 are correspondingly matched with the other two signal transceiving ends of the product to be tested one by one.
The signal testing method comprises the following steps:
s1, adjusting the angle and the position of the signal transceiver 2 to enable the signal transceiver 2 to be positioned in a transmitting quiet zone of each signal transceiving end of a product to be tested, and adjusting the signal transceiver 2 to be aligned with one signal transceiving end of the product to be tested;
s2, loading and fixing the simulation product provided with the laser emitter, emitting laser by the laser emitter on the simulation product, and reflecting the laser emitted by the laser emitter to a receiving point of the signal transceiver 2 by the calibrated reflection assembly 3 by adjusting the angle and the position of the corresponding reflection assembly 3;
s3, comparing the spatial attenuation of each signal path to enable the range difference to be smaller than 15dB, and enabling the interference of each group of reflection assemblies 2 on other signal paths to be smaller than 20 dB;
s4, taking out the simulated product after the adjustment is finished;
s5, placing the product to be tested, switching signal ports through the test system, and testing each signal receiving and transmitting end of the product to be tested one by one.
Claims (7)
1. A test module is characterized in that: it is including setting up signal transceiver (2) and a plurality of reflection assembly (3) in shielded cell (1), signal transceiver (2) aim at with one of them signal transceiver end of awaiting measuring product, and is a plurality of reflection assembly (3) cooperate with the all the other signal transceiver ends one-to-one of awaiting measuring product, reflection assembly (3) with the signal reflection of signal transceiver end extremely signal transceiver (2).
2. A test module according to claim 1, wherein: the shielding box (1) is internally provided with a product supporting plate (4), the signal transceiver (2) is positioned above the product supporting plate (4), and the plurality of reflecting assemblies (3) and the product supporting plate (4) are positioned at the same horizontal height.
3. A test module according to claim 1, wherein: reflection component (3) are including speculum (5) and triaxial adjustment structure, speculum (5) are connected on the activity end of triaxial adjustment structure.
4. A test module according to claim 3, wherein: the three-axis adjusting structure comprises a mounting plate (5), an X-axis sliding support (7) and a Y-axis sliding block (8), wherein the mounting plate (5) is fixed on the side wall of the shielding box (1), a linear sliding groove (9) matched with the X-axis sliding support (7) is formed in the mounting plate (5), the X-axis sliding support (7) is far away from one end of the mounting plate (5) and is provided with a Z-axis lifting guide pillar (10), the Y-axis sliding block (8) is in sliding fit with the Z-axis lifting guide pillar (10), a linear sliding rail (11) is formed in the Y-axis sliding block (8), and the reflector (5) is in sliding fit with the linear sliding rail (11).
5. A test module according to claim 3, wherein: the reflecting mirror (5) is connected with the three-axis adjusting structure through an angle adjusting structure, the angle adjusting structure comprises a connecting block (12) and a spherical joint, and two ends of the spherical joint are respectively connected with the reflecting mirror (5) and the connecting block (12).
6. A test module according to claim 5, wherein: the spherical joint comprises a ball shaft (13) and a ball seat sliding sleeve (14) which are connected in a matched mode, an adjusting rod is arranged on the connecting block (12), the ball seat sliding sleeve (14) is in sliding fit with the adjusting rod, and a fastening screw matched with the adjusting rod is arranged on the ball seat sliding sleeve (14).
7. Method for signal testing implemented with a test module according to any of claims 1 to 6, characterized in that it comprises the following steps:
s1, adjusting the angle and the position of the signal transceiver (2) to enable the signal transceiver (2) to be located in a transmitting quiet zone of each signal transceiving end of a product to be tested, and adjusting the signal transceiver (2) to be aligned with one signal transceiving end of the product to be tested;
s2, loading and fixing the simulation product provided with the laser transmitter, enabling the laser transmitter on the simulation product to emit laser, and enabling the calibrated reflection assembly (3) to reflect the laser emitted by the laser transmitter to a receiving point of the signal transceiver (2) by adjusting the angle and the position of the corresponding reflection assembly (3);
s3, comparing the spatial attenuation of each signal path to enable the range difference to be smaller than 15dB, and enabling the interference of each group of reflection assemblies (2) on other signal paths to be smaller than 20 dB;
s4, taking out the simulated product after the adjustment is finished;
s5, placing the product to be tested, switching signal ports through the test system, and testing each signal receiving and transmitting end of the product to be tested one by one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011376806.2A CN112649697A (en) | 2020-12-01 | 2020-12-01 | Test module and signal test method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011376806.2A CN112649697A (en) | 2020-12-01 | 2020-12-01 | Test module and signal test method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112649697A true CN112649697A (en) | 2021-04-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011376806.2A Pending CN112649697A (en) | 2020-12-01 | 2020-12-01 | Test module and signal test method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112649697A (en) |
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2020
- 2020-12-01 CN CN202011376806.2A patent/CN112649697A/en active Pending
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