An electronic book PCBA board RF testing device

Abstract

The utility model relates to an electronic book PCBA board RF testing arrangement, including shielding box, wireless communication tester and test PC, the shielding box is at least two, the box body of each shielding box is equipped with test station respectively, is equipped with the substrate fixed in the box body on test station, the top of substrate is detachably connected with test fixture, the substrate and located below the positioning groove are equipped with the coupling board, the coupling board in each shielding box is connected to wireless communication tester through radio frequency line respectively and is non -contact coupling with the antenna area of corresponding electronic book PCBA board, the top of test fixture is equipped with probe group, this probe group is fixed in the bottom of lifting piece, and probe group is used for with electronic book PCBA board's communication detection end contact connection, the probe group in each shielding box is connected to test PC through UART communication card respectively, and test PC controls wireless communication tester and the test of PCBA board of waiting and measuring, the utility model discloses can effectively improve test efficiency.

Description

Technical Field

[0001] This utility model relates to the field of RF testing technology for e-book PCBA boards, and specifically to an RF testing device for e-book PCBA boards. Background Technology

[0002] E-reader PCBA boards are designed with both Wi-Fi and Bluetooth (BT) functionality. Therefore, the production line process requires testing the Wi-Fi / BT performance of the PCBA boards at the board level, i.e., radio frequency (RF) testing, to prevent defective products from being missed on the assembly line and into the market. Current technology involves assembling the PCBA boards under test onto e-reader prototypes and connecting them to a Wi-Fi hotspot to test connection stability and signal strength at different distances. Bluetooth functionality testing involves pairing with a Bluetooth headset and gradually moving it away from the device in an open environment to observe connection stability. This process requires frequent switching of the PCBA boards under test, is cumbersome, requires multiple people, and has low testing efficiency. Relying on manual judgment easily leads to missed defects. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an RF testing device for electronic book PCBA boards to improve testing efficiency.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: An RF testing device for an e-book PCBA board includes a shielded box, a wireless communication tester, and a test PC; The shielding box consists of at least two boxes, each including a box body and a box cover. The box cover is connected to the box body via a rotating shaft and can be rotated relative to the box body to open or close. Each shielded enclosure has a test station inside, and a base plate fixed inside the enclosure is placed on the test station. A test fixture is detachably connected to the top of the base plate, and the test fixture has a positioning groove in which the e-book PCBA board to be tested is placed. A coupling plate is provided on the base plate and below the positioning groove. The coupling plates in each shielded enclosure are connected to a wireless communication tester via radio frequency lines and are non-contactly coupled to the antenna area of ​​the corresponding e-book PCBA board. A probe group is provided above the test fixture. The probe group is fixed to the bottom of a lifting block, which is driven to move up and down by a lifting driver. The probe group is used to make contact with the communication detection end of the e-book PCBA board. The probe groups inside each shielded box are connected to the test PC via a UART communication card. The test PC controls the wireless communication tester and the PCBA board under test for testing.

[0005] Furthermore, the lid is opened or closed by rotating an electric push rod.

[0006] Furthermore, a snap fastener is provided on the side of the positioning groove. Under the action of a compression spring, the snap fastener presses and positions the e-book PCBA board in the positioning groove of the test fixture.

[0007] Furthermore, the top two sides of the substrate are respectively provided with strip-shaped mounting grooves, and the two sides of the test fixture are respectively connected and fixed to the mounting grooves on the corresponding sides by bolts.

[0008] Furthermore, the e-book PCBA boards inside each shielded box are powered by an external power supply via a Type-C cable.

[0009] Furthermore, the test PC is connected to a monitor, which is used to display the test status and results information in real time.

[0010] Furthermore, the top of the test fixture is provided with a limiting block for limiting the descent position of the probe group.

[0011] Furthermore, the lifting driver is an electric push rod.

[0012] By adopting the above technical solution, the beneficial effects of this utility model are as follows: 1. RF testing of e-book motherboards is conducted using a shielded box, test fixture, wireless communication tester, and test PC. The tester simply scans the product barcode, places the PCBA board into the fixture, and closes the shielded box to begin testing. The operation is extremely convenient, and test results are automatically uploaded to the MES system from the test PC, improving testing efficiency. 2. Using a single test PC and wireless communication tester to simultaneously test and inspect multi-station e-book PCBA boards saves on instrument costs and improves testing efficiency; 3. The communication between the test PC and the PCBA board is established using probes for contact connection, which facilitates maintenance in case of abnormalities and reduces maintenance costs. 4. The PCBA board is powered by an external power supply via a Type-C cable, resulting in a smaller shielded enclosure. 5. The test plate is placed in the positioning slot of the test fixture and then positioned by the clamp, which makes positioning more convenient and improves work efficiency. 6. When switching between different boards to be tested, only the test fixture inside the shielded box needs to be replaced. There is no need to replace all the components inside the shielded box, which has strong compatibility. Attached Figure Description

[0013] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments: Figure 1 This is a schematic diagram of the overall framework of the testing device of this utility model; Figure 2 A schematic diagram of the double-shielded box in the open state; Figure 3This is a schematic diagram of the test fixture. Detailed Implementation

[0014] like Figure 1-3 As shown, this utility model discloses an RF testing device for an electronic book PCBA board, which includes a shielded box 1, a wireless communication tester, and a test PC.

[0015] In this embodiment, there are two shielding boxes 1. Each shielding box 1 includes a box body 11 and a box cover 12. The box cover 12 is connected to the box body 11 through a rotating shaft and can be rotated to open or close relative to the box body 11. The box cover 12 is driven to rotate to open or close by an electric push rod. Electric push rods are provided on both sides of the box body 11 to connect to the box cover 12.

[0016] Each shielding box 1 has a test station inside its housing 11. A base plate 2 is fixed inside the housing 11 at the test station. A test fixture 3 is detachably connected to the top of the base plate 2. The test fixture 3 has a positioning groove 31, and the e-book PCBA board to be tested is placed in the positioning groove 31. A coupling plate 4 is provided on the base plate 2 and below the positioning groove 31. The coupling plate 4 in each shielding box 1 is connected to the wireless communication tester through an RF cable and is non-contactly coupled to the antenna area of ​​the corresponding e-book PCBA board.

[0017] A probe assembly 5 is mounted on top of the test fixture 3. This probe assembly 5 is fixed to the bottom of a lifting block 6, which is driven to move up and down by a lifting driver. The probe assembly 5 is used to contact and connect with the communication detection terminal of the e-book PCBA board. The lifting driver is also an electric push rod. Furthermore, a limit block 7 is located at the top of the test fixture 3 to limit the descent position of the probe assembly 5. The function of the limit block 7 is to prevent the probe assembly 5 from descending too far while ensuring that the probe assembly 5 can effectively contact the communication detection terminal of the e-book PCBA board.

[0018] The probe groups 5 inside each shielded box 1 are connected to the test PC via UART communication cards. The test PC controls the wireless communication tester and the PCBA board under test for testing. The test PC is connected to a monitor, which is used to display the test status and results in real time.

[0019] The wireless communication tester used is model CMW100.

[0020] A snap fastener 8 is provided on the side of the positioning groove 31 on the test fixture 3. Under the action of a compression spring, the snap fastener 8 presses and positions the e-book PCBA board in the positioning groove 31 of the test fixture 3. The specific structure of the snap fastener 8 can be as follows: one end of the snap fastener 8 is movably sleeved on the guide rod, and then the snap fastener 8 is pressed from top to bottom by the compression spring on the guide rod. This structure allows the snap fastener 8 to rotate and lift. After the e-book PCBA board to be tested is placed, the other end of the snap fastener 8 will press the e-book PCBA board under the action of the compression spring.

[0021] The top two sides of the substrate 2 are respectively provided with strip-shaped mounting grooves 21. The two sides of the test fixture 3 are respectively connected and fixed to the mounting grooves 21 on the corresponding sides by bolts, thereby realizing a detachable connection.

[0022] In order to reduce the size of the shielding box 1, the e-book PCBA boards inside each shielding box 1 are powered by an external power supply via a Type-C cable.

[0023] The working principle of this invention is as follows: The test PC sends a command via UART communication card to enable Wi-Fi testing on the PCBA board under test (TBD). Simultaneously, the PC software sends a command to the CMW100 instrument to acquire the Wi-Fi signal strength value of the TBD PCBA board through coupling plate 4 and RF cable. For the RX test of the TBD PCBA board, the CWM1000 is set to signal generator mode to generate a standard test signal conforming to the protocol. The TBD PCBA board enters receiving mode, and the test PC records the number and quality of received data packets. Then, the signal strength is gradually reduced or interference is increased until the TBD PCBA board cannot decode normally, and the critical value is recorded. Regarding the Bluetooth TX test, the test PC triggers the Bluetooth module of the TBD PCBA board to send a specific test signal via a command. The CMW100 acquires the signal through coupling plate 4 and RF cable and performs automatic parsing. The test PC automatically compares the power performance indicators of Wi-Fi 2.4G and 5G, and BT 2.4G RX and TX. After the test is completed, the data results are uploaded to the MES system.

[0024] The specific embodiments of this utility model have been described above. However, those skilled in the art should understand that this is only an example. Those skilled in the art can make various changes or modifications to this embodiment without departing from the principle and essence of this utility model, but all such changes and modifications fall within the protection scope of this utility model.

Claims

1. An RF testing device for an e-book PCBA board, characterized in that: Includes a shielded box, wireless communication tester, and test PC; The shielding box consists of at least two boxes, each including a box body and a box cover. The box cover is connected to the box body via a rotating shaft and can be rotated relative to the box body to open or close. Each shielded enclosure has a test station inside, and a base plate fixed inside the enclosure is placed on the test station. A test fixture is detachably connected to the top of the base plate, and the test fixture has a positioning groove in which the e-book PCBA board to be tested is placed. A coupling plate is provided on the base plate and below the positioning groove. The coupling plates in each shielded enclosure are connected to a wireless communication tester via radio frequency lines and are non-contactly coupled to the antenna area of ​​the corresponding e-book PCBA board. A probe group is provided above the test fixture. The probe group is fixed to the bottom of a lifting block, which is driven to move up and down by a lifting driver. The probe group is used to make contact with the communication detection end of the e-book PCBA board. The probe groups inside each shielded box are connected to the test PC via a UART communication card. The test PC controls the wireless communication tester and the PCBA board under test for testing.

2. The RF testing device for an e-book PCBA board according to claim 1, characterized in that: The lid is opened or closed by rotating an electric push rod.

3. The RF testing device for an e-book PCBA board according to claim 1, characterized in that: A snap fastener is provided on the side of the positioning groove. Under the action of a compression spring, the snap fastener presses and positions the e-book PCBA board in the positioning groove of the test fixture.

4. The RF testing device for an e-book PCBA board according to claim 1, characterized in that: The top two sides of the substrate are respectively provided with strip-shaped mounting grooves, and the two sides of the test fixture are respectively connected and fixed to the mounting grooves on the corresponding sides by bolts.

5. The RF testing device for an e-book PCBA board according to claim 1, characterized in that: The e-book PCBA boards inside each shielded box are powered by an external power supply via a Type-C cable.

6. The RF testing device for an e-book PCBA board according to claim 1, characterized in that: The test PC is connected to a monitor, which is used to display the test status and results in real time.

7. The RF testing device for an e-book PCBA board according to claim 1, characterized in that: The test fixture is equipped with a limiting block at the top to limit the descent position of the probe group.

8. The RF testing device for an e-book PCBA board according to claim 1, characterized in that: The lifting driver is an electric push rod.

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