Testing device

Abstract

The utility model relates to the technical field of product testing, and discloses a testing device. The testing device comprises a shielding box, a signal transmission module and a clamp. The shielding box comprises a box body and a cover body which are connected, the box body is provided with a containing cavity with an opening, and the cover body seals the opening. The signal transmission module is movably arranged in the accommodating cavity, and the signal transmission module is used for being electrically connected with the to-be-tested module so as to transmit a test signal to the to-be-tested module. The clamp is arranged in the containing cavity and comprises a driving mechanism and a clamping piece which are connected, and the driving mechanism drives the clamping piece to fix the signal transmission module to the position, separated from the to-be-tested module, in the containing cavity. According to the testing device provided by the invention, the accuracy of a testing result can be improved when a radio frequency test is carried out.

Description

TECHNICAL FIELD

[0001] The embodiment of the present application relates to the product testing technical field, in particular to a test device. BACKGROUND

[0002] With the continuous development of communication technology, the radio frequency performance of various products is also continuously improved. In order to obtain the radio frequency performance of the product, the radio frequency test needs to be carried out on the product. Through the accurate and effective radio frequency test on the product, whether the radio frequency performance of the product meets the requirements can be detected, so as to verify the design result and find the design defects of the product in time.

[0003] The radio frequency test is usually carried out by means of the test device. The product to be tested is placed in the established test environment, so as to complete the test of the established project in the required test environment. However, in the actual test process, the accuracy of the test result is interfered by various factors. Therefore, how to improve the accuracy of the test result when the radio frequency test is carried out is an important problem. CONTENT OF THE UTILITY MODEL

[0004] The purpose of the embodiment of the present application is to provide a test device which can improve the accuracy of the test result when the radio frequency test is carried out.

[0005] In order to solve the above technical problem, the embodiment of the present application provides a test device. The test device comprises a shielding box, a signal transmission module and a clamp. The shielding box comprises a box body and a cover body connected with each other. The box body is provided with a containing cavity with an opening, and the cover body seals the opening. The signal transmission module is movably arranged in the containing cavity. The signal transmission module is used to be electrically connected with a module to be tested, so as to transmit a test signal to the module to be tested. The clamp is arranged in the containing cavity. The clamp comprises a driving mechanism and a clamping piece connected with each other. The driving mechanism drives the clamping piece to fix the signal transmission module at a position separated from the module to be tested in the containing cavity.

[0006] The test device provided by the embodiment of the present application is arranged with the clamp in the containing cavity of the shielding box. The clamping piece of the clamp can fix the position of the signal transmission module under the driving of the driving mechanism. When the signal transmission module and the module to be tested are connected to carry out the radio frequency, the module to be tested and the signal transmission module can be effectively separated by the clamp, so that there is no contact between the module to be tested and the signal transmission module in the test process. Therefore, when the module to be tested is placed in the shielding box to carry out the radio frequency test, the stability of the whole can be improved, and the accuracy of the test result can be effectively improved.

[0007] In some embodiments, the clamping member comprises a first clamping portion and a second clamping portion arranged oppositely, and a space for accommodating the signal transmission module is formed between the first clamping portion and the second clamping portion. The first clamping portion and the second clamping portion clamp different surfaces of the signal transmission module. In this way, the signal transmission module can be gripped and fixed by the cooperation between the two clamping portions.

[0008] In some embodiments, a plurality of clamping members are provided, and the box body comprises a first side wall and a second side wall arranged oppositely. The first side wall is connected with the cover body. Part of the plurality of clamping members is arranged adjacent to the first side wall, and another part of the plurality of clamping members is arranged adjacent to the second side wall. In this way, the stability of the signal transmission module when fixed can be ensured by clamping the signal transmission module in different directions by the plurality of clamping members.

[0009] In some embodiments, the plurality of clamping members are symmetrically arranged in the accommodating cavity. In this way, the load bearing of each clamping member can be balanced by symmetrically arranging the plurality of clamping members.

[0010] In some embodiments, the box body comprises a third side wall connecting the first side wall and the second side wall. The third side wall is provided with a line distribution board. The line distribution board is connected with a transmission line. The transmission line is connected with the signal transmission module. In this way, the electrical connection between the components inside and outside the shielding box can be facilitated by the arrangement of the line distribution board.

[0011] In some embodiments, a foam layer is arranged on one side of the third side wall close to the accommodating cavity. In this way, the external signal interference can be isolated by the foam layer.

[0012] In some embodiments, the driving mechanism comprises an electric sliding rail and a rotating telescopic assembly connected with the electric sliding rail. The clamping member is connected with the rotating telescopic assembly. In this way, the movement of the clamping member in different directions can be realized by the cooperation of the electric sliding rail and the rotating telescopic assembly.

[0013] In some embodiments, the electric sliding rail and the rotating telescopic assembly are provided with an infrared sensing module. In this way, the remote automatic remote control of the electric sliding rail and the rotating telescopic assembly can be realized by infrared signals.

[0014] In some embodiments, the clamping member further comprises a fixing seat arranged in the accommodating cavity. The electric sliding rail is connected with the fixing seat. In this way, the fixing seat can provide a mounting basis for other components and facilitate the placement of the clamping member in the shielding box.

[0015] In some embodiments, the fixing seat is arranged in a regular triangular shape. In this way, the regular-shaped fixing seat facilitates the molding and provides convenience for the stable placement of the clamping member. BRIEF DESCRIPTION OF DRAWINGS

[0016] One or more embodiments are exemplarily illustrated by pictures in the corresponding drawings. These exemplifications do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements. Unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0017] Figure 1 is a schematic diagram of the three-dimensional structure of a testing device provided in some embodiments of the present application;

[0018] Figure 2 yes Figure 1 Schematic diagram of the enlarged structure at A in the middle;

[0019] Figure 3 is a schematic diagram of the internal structure of a shielding box in a test device provided in some embodiments of the present application;

[0020] Figure 4 This is a schematic diagram of the structure of a fixture in a testing device provided in some embodiments of the present application. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, each embodiment of the present application will be described in detail below with reference to the accompanying drawings. However, it will be understood by those skilled in the art that in each embodiment of the present application, many technical details are proposed in order to enable the reader to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical solutions claimed in the present application can be implemented. The division of the following embodiments is for convenience of description and should not constitute any limitation on the specific implementation of the present application. The various embodiments can be combined with each other and referenced to each other under the premise of no contradiction.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are for the purpose of describing specific embodiments only and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0023] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections, or electrical connections; direct connections, or indirect connections through an intermediate medium; and can refer to internal connectivity between two components or interaction between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0024] In the field of radio frequency test, test device is a very important test tool, and test engineers need to test in various environments. In some special tests, the test results of the test device are affected by many factors, which brings great trouble to the test engineers. For example, when testing the receiving sensitivity, the to-be-tested module needs to be placed in a signal shielding box. Due to the limited space in the shielding box, when connecting the combiner for testing, the combiner cannot be avoided to contact the to-be-tested module, resulting in inaccurate test results.

[0025] In order to improve the accuracy of the test results, some embodiments of the present application provide a test device. The test device includes a shielding box body, which provides a test environment for the radio frequency test of the to-be-tested module by suppressing radiation interference. The shielding box body is internally provided with a signal transmission module, such as a signal combiner used for receiving sensitivity test. The signal combiner can combine multiple transmission signals into one receiving signal, and then detect the receiving sensitivity by the restoration degree of the test signal through the receiving signal. The to-be-tested module is placed on the inner bottom surface of the shielding box body. The shielding box body is also internally provided with a clamp, which can effectively separate the to-be-tested module and the signal transmission module, without the need for hand holding. During the test process, the to-be-tested module and the signal transmission module can be kept in a non-contact state. Moreover, the clamp can adjust the clamping height and the stretching distance to adapt to the required fixed position. In this way, when the to-be-tested module is placed in the shielding box for radio frequency test, the overall stability can be improved, and the accuracy of the test results can be effectively improved.

[0026] The structure of the test device provided by some embodiments of the present application will be described below. Figures 1 to 4 The test device is used for radio frequency test of the to-be-tested module.

[0027] As shown in Figures 1 to 4 some embodiments of the present application, the test device includes a shielding box 11, a signal transmission module 12 and a clamp 13. The shielding box 11 includes a box body 111 and a cover body 112 connected to each other. The box body 111 is provided with a containing cavity 101 having an opening 102, and the cover body 112 closes the opening 102. The signal transmission module 12 is movably arranged in the containing cavity 101, and is used to be electrically connected with the to-be-tested module 21 to transmit test signals to the to-be-tested module 21. The clamp 13 is arranged in the containing cavity 101, and includes a driving mechanism 131 and a clamping piece 132 connected to each other. The driving mechanism 131 drives the clamping piece 132 to fix the signal transmission module 12 at a position separated from the to-be-tested module 21 in the containing cavity 101.

[0028] The shielding box 11 is a component of the testing device for constructing a testing environment for the to-be-tested module 21. The box body 111 of the shielding box 11 provides a containing space for radio frequency testing, and the to-be-tested module 21 can be placed in the containing space of the box body 111 when performing radio frequency testing. The box body 111 has an opening 102 in communication with the containing cavity 101, and the to-be-tested module 21 can be placed into or taken out from the opening 102. The box body 111 is connected with a cover body 112, which can close the opening 102 of the box body 111, so that the to-be-tested module 21 is in an environment isolated from external electromagnetic interference during radio frequency testing. After the radio frequency testing is completed, the tested module can be taken out by opening the cover body 112. The connection between the cover body 112 and the box body 111 can be clamping, hinging, or detachable connection. The cover body 112 can be provided with a hand holding rod 113 for the tester to hold and move the cover body 112 accordingly.

[0029] The signal transmission module 12 is located in the containing cavity 101 of the shielding box 11, and is used for transmitting radio frequency testing signals for the to-be-tested module 21. When the to-be-tested module 21 is placed in the containing cavity 101 of the shielding box 11 for radio frequency testing, a signal transmission channel can be established between the signal transmission module 12 and the to-be-tested module 21 through electrical connection, so as to collect the receiving signals of the to-be-tested module 21 and detect the radio frequency performance of the to-be-tested module 21.

[0030] The clamp 13 is a component of the testing device for fixing the position of the signal transmission module 12. The clamp 13 is arranged in the containing cavity 101 of the shielding box 11 and has moving and clamping properties. The signal transmission module 12 can be clamped according to the position of the signal transmission module 12 in the containing cavity 101, and the signal transmission module 12 can be moved to a position without contact with the to-be-tested module 21 after being clamped. Thus, the accuracy of the test result is avoided when the to-be-tested module 21 is tested for radio frequency. The driving mechanism 131 of the clamp 13 can have multiple direction moving properties, such as lifting, translational expansion and rotation, to adapt to the clamping and position transfer of the signal transmission module 12. The clamping piece 132 is used for clamping the signal transmission module 12, and the clamping piece 132 can adopt a gripper form to replace the human hand to fix the position of the signal transmission module 12.

[0031] In the test device provided in some embodiments of the present application, a clamp 13 is provided within the accommodating cavity 101 of the shielding box 11. The clamping member 132 of the clamp 13 can fix the position of the signal transmission module 12 under the drive of the driving mechanism 131. When the signal transmission module 12 is connected to the module to be tested 21 for radio frequency testing, the clamp 13 can effectively separate the module to be tested 21 and the signal transmission module 12, so that there is no contact between the module to be tested 21 and the signal transmission module 12 during the test. Therefore, when the module to be tested 21 is placed in the shielding box 11 for radio frequency testing, the overall stability can be improved, effectively improving the accuracy of the test results.

[0032] In some embodiments, the clamping member 132 may include a first clamping portion 1321 and a second clamping portion 1322 arranged opposite to each other, and there is a gap 1323 between the first clamping portion 1321 and the second clamping portion 1322 for accommodating the signal transmission module 12, and the first clamping portion 1321 and the second clamping portion 1322 are clamped on different surfaces of the signal transmission module 12.

[0033] The first clamping portion 1321 and the second clamping portion 1322 are clamping parts provided in the clamping member 132, which can grasp the signal transmission module 12 in cooperation with each other. A gap 1323 is formed between the two clamping portions, and the two clamping portions clamp on different surfaces of the signal transmission module 12 when grasping the signal transmission module 12. The two clamping portions can simplify the grasping structure of the clamping member 132, and facilitate the production and molding of the clamping member 132. The clamping portion can be set to a flat plate shape, and a rectangular groove-type clamping structure with an open side is formed in the clamping member 132. The other sides of the two clamping portions are connected by a connecting portion to form a whole. At the same time, the connecting portion limits the clamping depth of the clamping member 132, and also provides convenience for the connection between the clamping member 132 and the driving mechanism 131.

[0034] In addition, there may be multiple clamps 13. The box body 111 includes a first side wall 1111 and a second side wall 1112 disposed opposite each other, and the first side wall 1111 is connected to the cover 112. Some of the multiple clamps 13 are disposed adjacent to the first side wall 1111, and another portion of the multiple clamps 13 are disposed adjacent to the second side wall 1112.

[0035] Multiple clamps 13 can stably clamp the signal transmission module 12 at different locations, providing fixed support for the signal transmission module 12 from multiple directions. The first side wall 1111 and the second side wall 1112 of the box body 111 are located near the opening 102, and the first side wall 1111 is connected to the cover 112. The signal transmission module 12 is located between the first side wall 1111 and the second side wall 1112. By arranging multiple clamps 13 adjacent to the first side wall 1111 and the second side wall 1112, the clamps 13 can be distributed around the signal transmission module 12, allowing the clamps 13 to grasp the signal transmission module 12 from its periphery. This allows the signal transmission module 12 to be moved from a free position in an unsecured state to a suitable position in a secured state, preventing the signal transmission module 12 from contacting the module 21 under test during RF testing of the module 21, thereby preventing the test results of the module 21 under test from being affected.

[0036] In some embodiments, a plurality of clamps 13 may be symmetrically arranged in the accommodating cavity 101 .

[0037] The symmetrically arranged clamps 13 can evenly provide support around the signal transmission module 12 to ensure the stability of the signal transmission module 12 when it is fixed, thereby avoiding affecting the signal transmission process and the normal progress of the RF test process.

[0038] like Figure 3 As shown, the clamps 13 can be provided in two, and the two clamps 13 are symmetrically arranged in the accommodating cavity 101 of the shielding box 11. The two clamps 13 are arranged along the opening 102 toward different adjacent side walls, and the signal transmission module 12 is located in the area between the two clamps 13 when not fixed. When fixing the position of the signal transmission module 12, the driving mechanisms 131 of the two clamps 13 can be used to drive the clamping member 132 to approach the signal transmission module 12 from different positions until the clamping member 132 successfully grasps the signal transmission module 12. Then, the signal transmission module 12 is smoothly transferred to a suitable position separated from the module to be tested 21.

[0039] like Figure 3 As shown, the box body 111 may include a third side wall 1113 connecting the first side wall 1111 and the second side wall 1112 . The third side wall 1113 is provided with a circuit board 14 . The circuit board 14 is connected to a transmission line 15 . The transmission line 15 is connected to the signal transmission module 12 .

[0040] The third side wall 1113 is arranged opposite to the opening 102. When the opening 102 of the shielding box 11 faces the front where the tester is located, the third side wall 1113 is located at the rear. The circuit board 14 arranged on the third side wall 1113 facilitates the electrical connection between the various components and facilitates the establishment of a complete test channel between the various components inside and outside the shielding box 11. Figure 3 As shown, one end of the transmission line 15 can be connected to the interface on the circuit board 14, and the other end can be connected to the interface on the signal transmission module 12, so that the signal transmission module 12 can access the complete test channel. The interface on the circuit board 14 can be a USB interface or a round head interface, and the transmission line can be a coaxial cable. When the signal transmission module 12 is not fixed, the signal transmission module 12 is set in the accommodating cavity 101 by relying on the transmission line 15, and has the characteristic of being able to move freely within a certain range. At this time, as shown in FIG. Figure 3 As shown, under the influence of gravity, the signal transmission module 12 is in a drooping state and is located close to the module to be tested 21 located on the bottom surface of the shielding box 11. Before performing RF testing on the module to be tested 21, the signal transmission module 12 can be grasped by the clamping member 132 of the clamp 13 and transformed into a Figure 1 and Figure 2 The flat state shown in FIG. 1 and the position is far away from the module to be tested 21. In this way, the stability of each component can be ensured during the RF test, and the contact between the signal transmission module 12 and the module to be tested 21 can be avoided to affect the accuracy of the test results.

[0041] In addition, a foam layer 114 may be provided on a side of the third side wall 1113 close to the accommodating cavity 101 .

[0042] Foam has a good shielding effect, and the foam layer 114 is spliced ​​on the side wall of the shielding box 11. The area where the circuit board 14 is located is prone to signal leakage. By providing the foam layer 114 in the shielding box 11, it can absorb and isolate external signals, preventing the module under test 21 from being affected by external factors during RF testing.

[0043] In some embodiments, the driving mechanism 131 may include an electric slide rail 1311 and a rotating and telescopic assembly 1312 connected to the electric slide rail 1311 , and the clamping member 132 is connected to the rotating and telescopic assembly 1312 .

[0044] The electric slide 1311 can realize lifting and lowering motion in the clamp 13, and the rotating and telescopic component 1312 can realize translation and rotational motion in the clamp 13. Thus, the cooperation between the electric slide 1311 and the rotating and telescopic component 1312 drives the clamp 132 to move in multiple directions to adapt to the grasping and transfer of the signal transmission module 12. The slider part of the electric slide 1311 can freely rise and fall with the slide rod part, up to 30 cm and down to 5 cm, and the maximum load-bearing capacity can reach 5 kg. The rotating and telescopic component 1312 includes a telescopic rod, a telescopic shaft and a small rotating motor, which can drive the clamp 132 to rotate 360 ​​degrees, effectively simulating a human hand and facilitating grasping at different angles. In addition, the rotating and telescopic component 1312 can make the clamp 132 freely extend and retract, up to 10 cm. The driving mechanism 131 does not contain metal materials to avoid affecting the signal stability during RF testing. The cooperation between the electric slide rail 1311 and the rotating telescopic assembly 1312 can replace manual fixation of the signal transmission module 12, avoiding contact between the signal transmission module 12 and the module under test 21. In addition, the work efficiency during RF testing can be effectively improved through automated operation.

[0045] In addition, the electric slide rail 1311 and the rotating and telescopic assembly 1312 can be provided with an infrared sensing module.

[0046] The infrared sensing module is capable of receiving external control signals. When conducting RF testing, testers can control the lifting and lowering motion of the electric slide rail 1311 and the rotation and extension motion of the rotary and telescopic assembly 1312 via infrared signals from outside the shielding box 11. After the signal transmission module 12 is stably held in place by the fixture 13, the cover 112 of the shielding box 11 can be closed to conduct RF testing. During testing, the shielding box 11 remains fully closed, providing excellent signal isolation and ensuring the accuracy of test results.

[0047] like Figure 3 As shown, the clamp 13 may further include a fixing seat 133 , which is disposed in the accommodating cavity 101 , and the electric slide rail 1311 is connected to the fixing seat 133 .

[0048] The fixing base 133 serves as a mounting and fixing foundation for the other components of the fixture 13. The slide rod portion of the electric slide rail 1311 is fixed to one side of the fixing base 133. The entire fixture 13 can be placed within the accommodating cavity 101 of the shielding box 11 through the fixing base 133. The fixing base 133 facilitates the placement of the fixture 13 within the shielding box 11 and ensures that the fixture 13 is in a stable state. The fixing base 133 can be fixedly connected to the bottom of the shielding box 11, or it can be detachably connected.

[0049] In some embodiments, the fixing base 133 may be configured as a three-dimensional triangle.

[0050] By configuring the fixing base 133 as a three-dimensional triangle, the bottom area of ​​the fixing base 133 can be ensured, ensuring the stability of the placement of the fixing base 133. At the same time, the interference of other parts of the fixing base 133 on the movement of the slider portion of the electric slide rail 1311 can be reduced. In actual situations, the fixing base 133 can also be configured into other shapes, such as a prism, a cylinder, or other irregular shapes.

[0051] like Figure 3 As shown, when there are two clamps 13, the fixing bases 133 of the two clamps 13 are respectively fixed to different positions inside the shielding box 11. The two fixing bases 133 are symmetrically arranged to prevent some clamps 13 from tilting due to uneven load bearing.

[0052] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present application, and that in actual applications, various changes may be made thereto in form and detail without departing from the spirit and scope of the present application.

Claims

1. A test device for performing radio frequency testing on a module to be tested, characterized in that: include: The shielding box comprises a box body and a cover body connected to each other, wherein the box body is provided with a receiving cavity having an opening, and the cover body closes the opening; a signal transmission module, movably disposed in the accommodating cavity, the signal transmission module being used to be electrically connected to the module to be tested so as to transmit a test signal to the module to be tested; A fixture is arranged in the accommodating cavity, and the fixture includes a driving mechanism and a clamping member connected to each other. The driving mechanism drives the clamping member to fix the signal transmission module at a position separated from the module to be tested in the accommodating cavity.

2. The testing device according to claim 1, wherein: The clamping member includes a first clamping portion and a second clamping portion arranged opposite to each other, with a gap therebetween for accommodating the signal transmission module, and the first clamping portion and the second clamping portion clamp on different surfaces of the signal transmission module.

3. The testing device according to claim 1, wherein: There are multiple clamps, and the box body includes a first side wall and a second side wall arranged opposite to each other. The first side wall is connected to the cover body, and some of the multiple clamps are arranged adjacent to the first side wall, and another part of the multiple clamps are arranged adjacent to the second side wall.

4. The testing device according to claim 3, wherein: The plurality of clamps are symmetrically arranged in the accommodating cavity.

5. The testing device according to claim 3, wherein: The box body includes a third side wall connecting the first side wall and the second side wall. The third side wall is provided with a circuit board. The circuit board is connected to a transmission line, and the transmission line is connected to the signal transmission module.

6. The testing device according to claim 5, characterized in that: A foam layer is provided on a side of the third side wall close to the accommodating cavity.

7. The testing device according to claim 1, wherein: The driving mechanism includes an electric slide rail and a rotating and telescopic assembly connected to the electric slide rail, and the clamping member is connected to the rotating and telescopic assembly.

8. The testing device according to claim 7, characterized in that: The electric slide rail and the rotary telescopic assembly are provided with infrared sensing modules.

9. The testing device according to claim 7, wherein: The clamp further includes a fixing seat, which is disposed in the accommodating cavity, and the electric slide rail is connected to the fixing seat.

10. The testing device according to claim 9, characterized in that: The fixing seat is configured as a three-dimensional triangle.

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