Radio frequency conduction test equipment

Abstract

The utility model belongs to the technical field of testing devices, and provides radio frequency conduction testing equipment, which comprises a transmission unit, a shielding unit, a carrier unit and a testing unit, and is characterized in that the equipment drives the shielding unit to move towards or away from the carrier unit through the telescopic movement of the transmission unit, so that the shielding unit, the carrier unit and the testing unit are connected together or separated; the shielding unit is provided with a plurality of shielding cases, and when the shielding unit, the carrier unit and the testing unit are connected together, the shielding unit independently carries out signal shielding on the plurality of to-be-tested products in the carrier unit through the shielding cases so as to complete information interaction between the to-be-tested products and the testing unit. According to the utility model, the structure of a traditional radio frequency shielding box can be simplified, synchronous testing of multiple products to be tested can be realized at the same time, real-time data interaction is realized, the production cost is greatly reduced, and the testing efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of testing equipment technology, and in particular to a radio frequency conduction testing device. Background Technology

[0002] RF (radio frequency) testing is an important step in ensuring the performance and compliance of wireless communication devices and systems. It is used to measure and verify the radio frequency performance of wireless devices to ensure that the devices can operate efficiently and stably within a specified frequency range while complying with relevant regulations and standards. Therefore, it is widely used in consumer electronics, communication equipment, medical devices, and automotive electronics.

[0003] To ensure the proper functioning of all components in various electronic products, it is necessary to ensure that every component in each RF circuit operates without abnormalities, and to test and confirm the RF wireless transmission function of the product module. Currently, common RF conducted testing methods involve placing the product under test in a metal shielded box made of magnetically permeable material to suppress radiated interference. This requires a programmable power supply to provide multiple different DC or AC power supplies to the module, and a network spectrum analyzer to detect the waveform output of the RF circuit to confirm whether the parameters meet design requirements. However, the above-mentioned existing testing methods have the following drawbacks:

[0004] 1. The existing testing solution requires the use of a shielded box, which is generally 1500mm×1200mm×70mm in size. It is large and heavy, and difficult for testers to move.

[0005] 2. The purpose of the existing testing scheme using shielding boxes is to shield the test from various electromagnetic interferences from the outside world and the interference from the device under test to the outside world. As a result, the shielding box body material is generally iron, and the interior of the shielding box must be made entirely of special metal and conductive materials. It can be seen that the special requirements for the box body and the materials inside the box body make the shielding box cost high.

[0006] 3. Existing testing solutions have low accuracy and stability. For example, if multiple devices are placed in a shielded box for testing at the same time, they will interfere with each other, which will greatly reduce the accuracy and stability of the test. If a single module to be tested is placed in a shielded box for testing, only one module can be tested at a time, resulting in low testing efficiency.

[0007] 4. In the existing testing scheme, different modules under test need to be provided with multiple sets of different DC or AC power supplies, which requires the use of a programmable power supply to achieve precise control, which increases the equipment cost to some extent.

[0008] 5. Existing testing methods require the use of a network spectrum analyzer to analyze and judge the frequency components of product signals, such as carrier frequency, harmonics, noise, evaluation modulation, modulation quality, and signal distortion, which further increases equipment costs.

[0009] To address the aforementioned issues, researchers in this field have continuously improved radio frequency conduction testing devices. For example, patent application CN117434313A discloses a radio frequency conduction testing device for electronic devices, including a base and a tester. A mounting plate is fixedly mounted on the top of the base, and an electric cylinder is fixedly mounted on the top of the mounting plate. Two test probes are elastically mounted on the moving end of the electric cylinder. The tester is fixedly mounted on the top of the mounting plate and electrically connected to the test probes via wires. A placement tray is fixedly mounted on the top of the base, below the test probes. An electronic device clamping mechanism is located inside the placement tray. The clamping mechanism includes four support plates and four clamping plates. Slotted openings are formed on all four sides of the placement tray. The support plates are located inside the slots, and one end of each support plate is rotatably positioned inside the slot via a rotating shaft. A torsion spring is fitted onto the shaft wall. This invention can automatically clamp and fix electronic devices, improving the accuracy of radio frequency conduction testing and preventing test probe damage, thus extending the lifespan of the testing equipment.

[0010] However, although the above method uses an electric cylinder to move the tester downwards to complete the test, the technical problem it solves is that the existing test device requires manual clamping and fixing during each test, which is extremely inconvenient and reduces the testing efficiency of electronic equipment. Furthermore, it still cannot solve the problems of high cost of shielding boxes and the inability to achieve simultaneous testing of multiple modules and real-time data interaction. Utility Model Content

[0011] To address the shortcomings of existing technologies, this invention provides a radio frequency conduction testing device that can at least reduce production costs, enable simultaneous testing of multiple products under test, and achieve real-time data interaction.

[0012] To achieve the above objectives, the present invention adopts the following technical solution:

[0013] A radio frequency conduction testing device includes a transmission unit, a shielding unit, a carrier unit, and a testing unit. The device uses the extension and retraction movement of the transmission unit to move the shielding unit toward or away from the carrier unit, thereby connecting or separating the shielding unit, the carrier unit, and the testing unit together. The shielding unit has multiple shielding covers. When the shielding unit, the carrier unit, and the testing unit are connected together, the shielding unit uses the shielding covers to independently shield the signals of multiple products under test in the carrier unit, thereby completing the information exchange between the products under test and the testing unit.

[0014] Based on the aforementioned technical means, this application can connect multiple products under test (DUTs) to the testing unit via a transmission unit to achieve simultaneous testing of multiple products and real-time data interaction, thereby reducing production costs and improving testing efficiency. This application also uses a shielding cover to independently shield multiple DUTs within the carrier unit, preventing external signals from affecting product testing and avoiding mutual interference between products, thus preventing interference from external factors during product testing. Through this structural design, this application simplifies the traditional RF shielding box structure, reduces the manufacturing costs of the shielding box and equipment, and improves production efficiency.

[0015] Furthermore, the carrier unit includes a first carrier plate facing the shielding unit for mounting the product under test, and the first carrier plate is provided with a plurality of mounting positions that match the shielding cover.

[0016] Furthermore, the carrier unit also includes a second carrier plate facing the test unit, the second carrier plate being connected to the first carrier plate, and the second carrier plate having a probe provided at each mounting position.

[0017] Furthermore, the test unit includes a port component for data transmission and for electrical connection to the product under test.

[0018] Furthermore, the test unit also includes a detection component for current detection, which is electrically connected to the port component.

[0019] Furthermore, the test unit also includes a gold substrate. When the shielding unit, the carrier unit, and the test unit are connected together, multiple products under test in the carrier unit interact with the gold substrate.

[0020] Furthermore, the transmission unit includes a telescopic component, which is electrically or pneumatically driven.

[0021] Furthermore, the test unit also includes a power supply component for providing multiple voltages.

[0022] Furthermore, the testing equipment also includes a housing, in which the testing units are installed.

[0023] Furthermore, the casing, the first carrier plate, and the second carrier plate are made of pad wood.

[0024] The beneficial technical effects of this utility model are as follows:

[0025] This utility model uses a transmission unit to drive the shielding unit toward the carrier unit and connect the carrier unit with the test unit, so that multiple products under test can enter the test state, realize the simultaneous testing of multiple products under test and realize real-time data interaction, thereby effectively improving the test efficiency.

[0026] This invention uses multiple shielding covers to isolate and shield each product under test. This shielding can prevent external signals from affecting product testing, prevent mutual interference between products, and prevent the test unit from interfering with the outside world. Through this structural design, this invention can reduce the volume of traditional shielding boxes, thereby simplifying the shielding box structure and reducing production costs. Attached Figure Description

[0027] The accompanying drawings, incorporated in and forming part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without inventive effort. In the drawings:

[0028] Figure 1 This is a schematic diagram of the structure of the radio frequency conduction test equipment shown in this application;

[0029] Figure 2 This is a rear view of the radio frequency conducted test equipment shown in this application;

[0030] Figure 3 This is a partial structural schematic diagram of the radio frequency conduction test equipment shown in this application;

[0031] Figure 4 This is a schematic diagram of the startup interface of the radio frequency conduction test equipment shown in this application;

[0032] Figure 5 This is a partial schematic diagram of the test unit structure shown in this application;

[0033] Figure 6 This is a schematic diagram of the shielding unit structure shown in this application;

[0034] Figure 7 This is a schematic diagram of the carrier unit structure shown in this application.

[0035] Figure Labels

[0036] 1: Transmission unit; 2: Shielding unit; 3: Carrier unit; 4: Start-up unit; 5: Housing; 6: Power supply assembly; 7: Port assembly; 8: Gold substrate; 9: Detection assembly; 10: Start button; 11: Reset button; 13: AC-200V port; 14: Data transmission port; 18: DC-12V port; 19: Shielding cover; 23: First carrier board. Detailed Implementation

[0037] Unless otherwise defined, all technical and / or scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should be understood that certain features of this invention (described in the context of separate embodiments for clarity) may also be provided in combination in a single embodiment. Conversely, multiple features of this invention (described in the context of a single embodiment for brevity) may also be provided separately or in any suitable combination or, where appropriate, in any other described embodiment of this invention. Certain features described in the context of various embodiments will not be considered essential features of those embodiments unless the embodiment is inoperable without those elements. The present invention is further illustrated below by specific examples; however, it should be noted that the specific process conditions and results described in the embodiments of this invention are for illustrative purposes only and should not be construed as limiting the scope of protection of this invention. All equivalent changes or modifications made in accordance with the spirit and essence of this invention should be covered within the scope of protection of this invention.

[0038] like Figure 1 and Figure 6 As shown, a radio frequency conduction testing device includes a transmission unit 1, a shielding unit 2, a carrier unit 3, and a testing unit. The device drives the shielding unit 2 to move toward or away from the carrier unit 3 through the telescopic movement of the transmission unit 1, so as to connect or separate the shielding unit 2, the carrier unit 3, and the testing unit. The shielding unit 2 has multiple shielding covers. When the shielding unit 2, the carrier unit 3, and the testing unit are connected together, the shielding unit 2 independently shields the signals of multiple products under test in the carrier unit 3 through the shielding covers, so as to complete the information interaction between the products under test and the testing unit.

[0039] Furthermore, this application does not specify the number of shielding covers; it can be 2, 3, 4, or 6, etc. When there are 4, such as... Figure 6 As shown, the shielding unit has a shielding cover 19.

[0040] Furthermore, this application uses the transmission unit 1 to drive the shielding unit 2 toward the carrier unit 3 and connect the carrier unit 3 with the test unit, enabling multiple products under test to enter the test state, realizing simultaneous testing of multiple products under test and real-time data interaction, thereby effectively improving test efficiency; this application uses multiple shielding covers to isolate and shield each product under test, which can prevent external signals from affecting product testing, prevent mutual interference between products, and prevent the test unit from interfering with the outside world. Through this structural design, this application can reduce the volume of traditional shielding boxes, thereby simplifying the shielding box structure and reducing production costs.

[0041] Furthermore, the transmission unit 1 of this application includes a telescopic component, which is electrically or pneumatically driven. Even further, the telescopic component can be a telescopic rod, which can extend and retract electrically or pneumatically to push the shielding unit 2 towards the carrier unit 3, and then towards the test unit, thus connecting multiple products under test to the test unit. The telescopic rod can be any form of commercially available flexible telescopic device; its specific structure and model are not limited here. Specifically, the transmission unit 1 also includes a pressure gauge. When the telescopic component is connected to the pressure gauge, the current pressure value will be displayed on the gauge. This application can adjust the displacement of the telescopic component by appropriately adjusting the pressure value.

[0042] Furthermore, the shielding unit 2 of this application has a shielding shell, within which multiple partitions are spaced apart, and each partition is equipped with a shielding cover. The shielding shell and shielding covers are made of metal, such as a zinc-tin-nickel alloy. The number of shielding covers is set according to actual needs, such as 4 to 6, to ensure that the products under test do not interfere with each other and to shield the influence of external signals on product testing. Even further, the shielding cover of this application is a conformal shielding cover manufactured according to the specific shape of the product under test. Its size can vary according to the shape of the product under test; for example, the size of the shielding cover is 50mm × 40mm × 20mm. Traditional shielding boxes are generally very large, for example, 1500mm × 1200mm × 70mm. The entire shielding box is large and heavy, making it difficult to move. In contrast, the size of the shielding shell of this application can be reduced to 255mm × 144mm × 34mm, etc., which is a significant reduction compared to traditional shielding boxes. The shielding unit 2 can be easily moved and relocated, making it more suitable for setting up various testing scenarios.

[0043] Furthermore, such as Figure 7 As shown, the carrier unit 3 includes a first carrier plate facing the shielding unit 2 for mounting the product under test (DUT). The first carrier plate has multiple mounting positions that match the shielding cover. The carrier unit 3 also includes a second carrier plate facing the test unit, connected to the first carrier plate. The second carrier plate has probes corresponding to each mounting position. The first and second carrier plates in this application are conformal carrier plates formed according to the specific shape of the DUT. Since the RF conduction testing equipment can test multiple products simultaneously, such as 4 to 6 products, the first carrier plate can have the same number of mounting positions as the shielding cover to hold the corresponding number of products. Furthermore, the number of first carrier plates in this application should be equal to the number of shielding covers to ensure that the shielding cover can isolate the DUTs on the first carrier plate and completely shield them from each other. For example, the number of first carrier plates in this application can be 2, 3, 4, and 6, etc. When there are 4, such as... Figure 7As shown, the carrier unit includes a first carrier plate 23. A test probe is fixed on the second carrier plate of this application. This probe is used to contact the product under test to transmit signals and complete information exchange. Traditionally, test products need to be placed in a large shielded box, with only one product allowed at a time. Furthermore, the shielded box can only be opened after the previous product has been tested, making this method inefficient. However, this application, through the cooperation of the shielding unit 2 and the carrier unit 3, allows multiple products to be placed simultaneously without interference between them. This enables multiple products to start and finish testing at the same time, significantly improving testing efficiency.

[0044] Furthermore, the testing equipment also includes a housing 5, in which the testing unit is installed. The housing 5, the first carrier plate, and the second carrier plate are made of wood. Traditional shielding boxes use metal, which makes the entire shielding box very heavy. However, by using wood for the housing 5 and the carrier unit 3, the weight and manufacturing cost of the equipment can be significantly reduced. Moreover, the interior of the housing 5 does not require any conductive or magnetic materials, which can significantly reduce the procurement cost of raw materials.

[0045] Furthermore, such as Figure 2 and Figure 5 As shown, the test unit includes a port assembly 7 for data transmission and electrical connection to the product under test (DUT). The port assembly 7 is located on the housing 5 and includes multiple data transmission ports 14, such as SMA1, SMA2, SMA3, and SMA4. The connection lines of the data transmission ports 14 are TTL data transmission lines, with signal pins of TX / RX / GND. The input end of the transmission line is connected to the RX / TX / GND signal points of the DUT, and the output end is connected to auxiliary devices such as computers, tablets, or other terminals.

[0046] Furthermore, such as Figure 3 As shown, the test unit also includes a detection component 9 for current detection, which is electrically connected to the port component 7. The detection component 9 can be multiple current monitoring devices, such as ammeters, with the number of current monitoring devices matching the number of products under test. When a product under test enters the test state, the test unit interacts with the product under test, and the current monitoring devices accurately detect the current status in real time, uploading the test results via a TTL data transmission line.

[0047] Furthermore, such as Figure 3As shown, the test unit also includes a gold substrate 8. When the shielding unit 2, the carrier unit 3, and the test unit are connected together, multiple products under test (DUTs) in the carrier unit 3 interact with the gold substrate 8. The gold substrate 8 in this application is used to generate a reference signal via radio frequency (RF). The gold substrate 8 has a Golden PCB module and a Golden module. For example, the gold substrate 8 can be rectangular, with an operating voltage of 12V. Its input terminal is connected to the (RF) RX / TX signal point of the DUT via an RF cable, and its output terminal is connected to the high-voltage port of the DUT via an RF cable. It is recommended that a 20dB attenuator be connected in series between the output and input terminals in the loop. Furthermore, the current monitoring component in this application can be square, and its function is to monitor the operating current of the DUT in real time. The current monitoring component operates at 12V, and its input terminal is connected to the power supply terminal of the DUT. The current monitoring component transmits the monitored current parameters to auxiliary equipment via a TTL data transmission line.

[0048] Furthermore, such as Figure 2 As shown, the test unit also includes a power supply assembly 6 for providing multiple voltages. The power supply assembly 6 is mounted on the enclosure 5 and includes a DC-12V port 18 and an AC-200V port 13. This application provides 220V voltage to the drive unit 1 via the AC-200V port 13 and 12V voltage to the gold substrate 8 and current monitoring components via the DC-12V port 18. Furthermore, the power supply assembly 6 only requires a standard 220V power supply and a standard 12V voltage, without the need for programmable control. The rear end of the enclosure 5 has both DC-12V and AC-200V ports 18, which are readily available and inexpensive. This application eliminates the need for a programmable power supply to precisely control multiple voltages, reducing the need for programmable power supply equipment and simplifying the control method, thereby making testing simpler, significantly reducing equipment costs, and enhancing test stability.

[0049] Furthermore, such as Figure 4 As shown, the test equipment also includes a starting unit 4 for starting the transmission unit 1. The starting unit 4 is set on the housing 5 and includes a start button 10 and a reset button 11. To avoid the risk of accidentally triggering the start button 10, this application provides two start buttons 10, and the two start buttons 10 must be pressed at the same time to start. After the product test is completed, the transmission unit 1 will resume its movement after the reset button 11 is pressed, and the test ends.

[0050] Furthermore, the method of using the radio frequency conductedion test equipment of this application is as follows:

[0051] First, the device is connected to an auxiliary device, such as a computer, via the data transmission port 14 of the enclosure 5. A 220V / 12V voltage is input through the power supply assembly 6, providing 12V to the gold substrate 8, 220V to the transmission unit 1, and 12V to the current monitoring component. Then, the product to be tested is placed on the first carrier plate 23, and the two start buttons 10 of the start unit 4 are turned on. At this time, the transmission unit 1 drives the shielding unit 2 to move towards the first carrier plate 23 until the first carrier plate 23, the second carrier plate, and the gold substrate 8 are connected together, allowing the product to enter the testing state and interact with the gold substrate 8. During this interaction, the current monitoring component monitors the current status in real time and uploads the test results to the auxiliary device via a TTL data transmission line.

[0052] Furthermore, the transmission unit 1 of this application can be automatically controlled with the help of auxiliary equipment, and can automatically extend and retract according to preset parameters. The radio frequency conduction testing equipment of this application can simplify the traditional radio frequency shielding box structure, and can simultaneously test multiple products under test and realize real-time data interaction, which significantly reduces production costs and improves testing efficiency.

[0053] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A radio frequency conduction testing device, comprising a transmission unit (1), a shielding unit (2), a carrier unit (3), and a testing unit, characterized in that, The device drives the shielding unit (2) to move toward or away from the carrier unit (3) through the telescopic movement of the transmission unit (1) so as to connect or separate the shielding unit (2), the carrier unit (3) and the test unit. The shielding unit (2) has multiple shielding covers. When the shielding unit (2), the carrier unit (3) and the test unit are connected together, the shielding unit (2) independently shields the signals of multiple products under test in the carrier unit (3) through the shielding covers so as to complete the information interaction between the products under test and the test unit.

2. The testing equipment according to claim 1, characterized in that, The carrier unit (3) includes a first carrier plate facing the shielding unit (2) for mounting the product under test. The first carrier plate is provided with multiple mounting positions that match the shielding cover.

3. The testing equipment according to claim 2, characterized in that, The carrier unit (3) also includes a second carrier plate facing the test unit. The second carrier plate is connected to the first carrier plate, and the second carrier plate is provided with probes corresponding to each mounting position.

4. The testing equipment according to claim 1, 2, or 3, characterized in that, The test unit includes a port assembly (7) for data transmission and for electrical connection to the product under test.

5. The testing equipment according to claim 4, characterized in that, The test unit also includes a detection component (9) for current detection, which is electrically connected to the port component (7).

6. The testing equipment according to claim 1, 2, 3 or 5, characterized in that, The test unit also includes a gold substrate (8). When the shielding unit (2), the carrier unit (3) and the test unit are connected together, multiple products under test in the carrier unit (3) interact with the gold substrate (8).

7. The testing equipment according to claim 1, 2, 3 or 5, characterized in that, The transmission unit (1) includes a telescopic component, which is electrically driven or pneumatically driven.

8. The testing equipment according to claim 1, 2, 3 or 5, characterized in that, The test unit also includes a power supply component (6) for providing multiple voltages.

9. The testing equipment according to claim 1, 2, 3 or 5, characterized in that, It also includes a housing (5), in which the test unit is installed.

10. The testing equipment according to claim 9, characterized in that, The box body (5), the first carrier plate and the second carrier plate are made of pad wood.

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