Compact packaging structure based on 5G communication module and packaging method thereof

Abstract

The invention relates to the technical field of 5G communication modules, in particular to a compact packaging structure based on a 5G communication module and a packaging method thereof.The compact packaging structure comprises a fixed bottom plate, a shell and a mainboard, the shell and the mainboard are installed at the upper end of the fixed bottom plate, the mainboard is installed in the shell, an antenna assembly is installed on one side of the upper end of the mainboard, and an external antenna is installed at the upper end of the antenna assembly; connecting pieces are mounted at four corners of the fixed bottom plate; the connecting piece comprises a fixing column, a locking unit is installed in the fixing column, a fixing ring plate is fixedly connected to the outer side of the lower end of the fixing column, and an external thread is formed in the outer side of the lower end of the fixing column. The problem that the fixing position is damaged due to the installation force does not exist, and the stability of re-installation can still be guaranteed through the arranged rubber ring after multiple times of disassembly in the later period.

Description

Technical Field

[0001] The present invention relates to the technical field of 5G communication modules, and specifically to a compact packaging structure based on a 5G communication module and a packaging method thereof. Background Art

[0002] The compact packaging structure of 5G communication modules is typically achieved using a variety of advanced technologies. For example, Quectel's RG255C-GL module uses an LGA package with dimensions of 32.0mm × 29.0mm × 2.4mm. This compact design makes it easy to integrate into various IoT terminals. Fibocom's FG160 module uses an LGA package of 41mm × 44mm × 2.75mm, while the FM160 module uses an M.2 package of 30mm × 52mm × 2.3mm. Both package types can integrate high-performance 5G communication functions in a small size. In addition, 5G communication modules will integrate components such as RF, analog, digital functions, and passive devices, using heterogeneous integration technologies such as 2.5D / 3D system-in-package (SiP) technology to integrate chips and devices with different functions. This reduces the length of signal transmission paths, reduces loss and latency, and improves integration and performance. This compact packaging structure not only meets the high performance and miniaturization requirements of 5G devices, but also facilitates flexible application and compatible design in different devices. During the actual installation process of the packaged 5G communication module, the compact packaging structure is generally fixed directly with screws. During the fixing process, the screws are subjected to large forces, which may damage the fixed position of the installation. Moreover, after multiple disassembly, the fixed position may become loose when it is installed again later. Therefore, to address the above problems, a compact packaging structure based on a 5G communication module and a packaging method thereof are proposed. Summary of the Invention

[0003] The purpose of the present invention is to provide a compact packaging structure based on a 5G communication module and a packaging method thereof, so as to solve the problem that the compact packaging structure of the encapsulated 5G communication module is generally directly fixed with screws during the actual installation process with the equipment. During the fixing process, the screws are subjected to large forces, which will cause damage to the fixed position of the installation, and after multiple disassembly, the fixed position will become loose when it is installed again later.

[0004] To achieve the above object, the present invention provides the following technical solutions: A compact packaging structure based on a 5G communication module and a packaging method thereof include a fixed base plate, a shell and a mainboard, the upper end of the fixed base plate is installed with a shell and a mainboard, the mainboard is installed inside the shell, an antenna assembly is installed on one side of the upper end of the mainboard, the upper end of the antenna assembly is installed with an external antenna, and connecting parts are installed at the four corners of the fixed base plate; the connecting part includes a fixed column, a locking unit is installed inside the fixed column, the outer side of the lower end of the fixed column is fixedly connected to a fixed ring plate, the outer side of the lower end of the fixed column is provided with an external thread, the outer side of the fixed column is spirally connected to an adjustment plate through the external thread, and the lower end of the adjustment plate is fixedly connected to a rubber ring; the locking unit includes a control block, the middle of the lower end of the control block is fixedly connected to a first gear, and driven units are installed on both sides of the first gear, the driven unit includes a rotating shaft, the upper end of the rotating shaft is fixedly connected to a second gear, and the other end of the rotating shaft is fixedly connected to a semicircular block; the adjusting plate includes a plate body, the outer side of the plate body is annularly provided with anti-slip grooves at equal intervals, and the plate body is provided with an internal thread.

[0005] As a further optimization of the present invention, the main chip, SIM, MCU, GNSS positioning, RF front-end and sensor are respectively installed on the upper end of the main board, and the main chip, SIM, MCU, GNSS positioning, RF front-end and sensor are all arranged inside the shell.

[0006] As a further optimization of the present invention, the bottom end of the first gear is rotationally connected to the fixed column, the first gear and the second gear are meshed, the first gear and the second gear are both installed inside the fixed column, and the rotating shaft is rotationally connected to the fixed column.

[0007] As a further optimization of the present invention, the lateral projections of the fixed column and the control block are both T-shaped, the fixed column and the control block are rotationally connected, and are coaxially arranged between the fixed column and the control block.

[0008] As a further optimization of the present invention, the plate body is spirally connected between an internal thread opened inside and an external thread set on the outside of the fixing column, the lower end of the plate body is fixedly connected to the rubber ring, and annular grooves are opened inside and outside the rubber ring.

[0009] As a further optimized content of the present invention, the external antenna is electrically connected to the antenna component installed on the upper end of the mainboard.

[0010] As a further optimization of the present invention, the external antenna includes a storage shell, a flexible antenna body and an inclined block are fixedly connected inside the storage shell, an outlet is opened on the upper side of one end of the storage shell, and a control unit is slidably connected inside the other end of the storage shell.

[0011] As a further optimization of the present invention, the control unit includes two control panels, and a first roller and a second roller are rotatably connected between the control panels; two first rollers are provided, and the first rollers are arranged on the outside of the bending part of the U-shaped flexible antenna body, and one second roller is provided, and the second roller is arranged on the inside of the bending part of the U-shaped flexible antenna body.

[0012] As a further optimization of the present invention, the storage shell is fixedly connected to one side of the upper end of the outer shell, and slots for positioning the control panel are provided at both ends of the storage shell. The horizontal projection of the control panel is T-shaped, and a linearly arranged vertical slot is provided on the side of the control panel away from the center point of the outer shell.

[0013] As a further optimization of the present invention, the following steps are performed: Step 1: Encapsulation and Fixation: First, the fixing base plate is placed on a predetermined installation position to ensure that it is stable and fits well with the installation surface; Next, place the outer shell on the upper end of the fixed base plate, and install the main board inside the outer shell so that the main board and the outer shell fit tightly together to complete the preliminary main assembly; During this process, the main chip, SIM card, MCU, CNSS positioning, RF front-end, antenna assembly, and sensor are installed in the corresponding positions on one side of the upper end of the mainboard, and the external antenna is installed on the upper end of the antenna assembly. Ensure that the external antenna and the antenna assembly are electrically connected to ensure signal transmission function. The connecting pieces installed at the four corners are fixed by the lower end of the fixing column. During the fixing process, the first gear is driven to rotate by rotating the control block, and then the second gear drives the rotating shaft and the semicircular block to rotate, which is used to connect with the fixed end. After the connection is completed, the upper end of the semicircular block is tightly attached to the lower end of the fixed end, the lower end of the rubber ring is connected to the upper end of the fixed end, and the lower end of the fixing column is located inside the opening of the fixed end; Step 2: Debugging: According to actual needs, control the control unit to move and adjust the length of the flexible antenna body exposed to the outside; During the movement of the control unit, the first roller and the second roller are provided to change the bending position of the flexible antenna body to achieve adjustment, and during the adjustment process, the control board is used to ensure the stability of the control unit during movement; Step 3: Operation: After the installation is complete, power on the 5G communication module to ensure stable operation, and conduct a pre-operation test on the powered-on 5G communication module using dedicated test equipment; Step 4: Post-maintenance: Clean the device casing regularly and wipe its surface with a clean soft cloth to remove dust and stains; At regular intervals, recheck the connection and fastening of the connectors at the four corners of the base plate, and check whether the fixing columns, adjustment plates, locking units and other components are loose, worn or damaged. If so, tighten, repair or replace them in time; Maintain the external antenna, check whether the storage case is damaged or deformed, whether the flexible antenna body has creases or breaks, and whether the control unit is functioning properly. If any problems are found, repair or replace the antenna assembly or external antenna in a timely manner. If the main chip, SIM card, MCU, CNSS positioning, RF front-end, sensor and other components on the motherboard are found to be faulty or have performance degradation during device operation, they should be replaced or upgraded in a timely manner.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, the compact packaging structure of the packaged 5G communication module can be quickly installed through the provided connector, and the semicircular block and the rubber ring are adapted to complete the fixation. There is no problem of damage to the fixed position caused by the installation force. After multiple disassembly in the later stage, the provided rubber ring can still ensure the stability of re-installation. At the same time, it can avoid contact between the shell and the installation end, thereby ensuring the heat dissipation effect of the entire structure. 2. In the present invention, by providing an external antenna, the compact packaging structure of the 5G communication module can be installed at the installation site to adjust the antenna length according to actual needs. The adjustment is achieved through a sliding unit, which is relatively convenient. At the same time, the flexible antenna body is stored in a stacked manner, which can further increase the adjustable length range. 3. In the present invention, by setting a fixed base plate and a shell, the main board, main chip, SIM, MCU, GNSS positioning, RF front end, antenna assembly, and sensor are encapsulated in a position between the shell and the fixed base plate, which can be stably protected and the stability of the overall structure can be guaranteed. At the same time, the positions of the main chip, SIM, MCU, GNSS positioning, RF front end, antenna assembly, and sensor are arranged according to actual heat dissipation needs, which can ensure the heat dissipation effect while meeting the compactness. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the connector structure of the present invention; Figure 3 This is a schematic structural diagram of the locking unit of the present invention; Figure 4 Schematic diagram of the structure of the driven unit of the present invention; Figure 5 This is a schematic diagram of the structure of the adjustment plate of the present invention; Figure 6 This is a schematic diagram of the rubber ring structure of the present invention; Figure 7 This is a schematic diagram of the external antenna structure of the present invention; Figure 8 This is a schematic diagram of the structure of the control unit of the present invention; Figure 9 This is a schematic diagram of the main structure of the flexible antenna of the present invention.

[0016] In the figure: 1. Fixed base plate; 2. Housing; 3. Main board; 4. Connector; 41. Fixed column; 42. Locking unit; 421. Control block; 422. First gear; 423, driven unit; 4231, rotating shaft; 4232, second gear; 4233, semicircular block; 43. Fixed ring plate; 44. Adjustment plate; 441. Plate body; 442. Anti-slip groove; 443. Internal thread; 45. Rubber ring; 46. External thread; 5. External antenna; 51. Storage shell; 52. Flexible antenna body; 53. Inclined block; 54. Exit; 55. Control unit; 551. Control panel; 552. First roller; 553. Second roller; 6. Main chip; 7. SIM card; 8. MCU; 9. GNSS positioning; 10. RF front end; 11. Antenna assembly; 12. Sensor. DETAILED DESCRIPTION

[0017] See also Figures 1-9 , the present invention provides a technical solution: The compact packaging structure and packaging method based on the 5G communication module include a fixed base plate 1, a shell 2 and a mainboard 3. The shell 2 and the mainboard 3 are installed on the upper end of the fixed base plate 1. The mainboard 3 is installed inside the shell 2. An antenna assembly 11 is installed on one side of the upper end of the mainboard 3. The upper end of the antenna assembly 11 is installed with an external antenna 5. Connectors 4 are installed at the four corners of the fixed base plate 1; the connector 4 includes a fixing column 41, a locking unit 42 is installed inside the fixing column 41, a fixing ring plate 43 is fixedly connected to the outer side of the lower end of the fixing column 41, an external thread 46 is opened on the outer side of the lower end of the fixing column 41, and the outer side of the fixing column 41 is threaded with an external thread 46. 6 is spirally connected to an adjusting plate 44, and a rubber ring 45 is fixedly connected to the lower end of the adjusting plate 44; the locking unit 42 includes a control block 421, the middle of the lower end of the control block 421 is fixedly connected to the first gear 422, and a driven unit 423 is installed on both sides of the first gear 422. The driven unit 423 includes a rotating shaft 4231, the upper end of the rotating shaft 4231 is fixedly connected to the second gear 4232, and the other end of the rotating shaft 4231 is fixedly connected to a semicircular block 4233; the adjusting plate 44 includes a plate body 441, and the outer side of the plate body 441 is provided with anti-slip grooves 442 at equal intervals in a circular shape, and the inner side of the plate body 441 is provided with an internal thread 443.

[0018] As a technical solution further implemented in this solution, the main chip 6, SIM7, MCU8, GNSS positioning 9, RF front end 10 and sensor 12 are respectively installed on the upper end of the main board 3. The main chip 6, SIM7, MCU8, GNSS positioning 9, RF front end 10 and sensor 12 are all arranged inside the housing 2. Through the above arrangement, the 5G communication module can be tightly packaged; As a further technical solution of this solution, the bottom end of the first gear 422 is rotatably connected to the fixed column 41, the first gear 422 is meshed with the second gear 4232, the first gear 422 and the second gear 4232 are both installed inside the fixed column 41, and the rotating shaft 4231 is rotatably connected to the fixed column 41. Through the above arrangement, the second gear 4232 can be stably driven to rotate during the rotation of the first gear 422; As a further technical solution for implementing this solution, the horizontal projections of the fixed column 41 and the control block 421 are both T-shaped, the fixed column 41 and the control block 421 are rotatably connected, and the fixed column 41 and the control block 421 are coaxially arranged. Through the above arrangement, the stability of the control block 421 during rotation can be ensured; As a further technical solution for implementing this solution, the plate body 441 is screwed together with the external thread 46 provided on the outside of the fixing column 41 via the internal internal thread 443. The lower end of the plate body 441 is fixedly connected to the rubber ring 45. The rubber ring 45 has annular grooves both inside and outside. With the above arrangement, the 5G communication module can have a buffering effect when fixed by the rubber ring 45, and the bottom of the housing 2 can be separated from the fixed end, further improving the heat dissipation effect. As a further technical solution implemented in this solution, the external antenna 5 is electrically connected to the antenna assembly 11 mounted on the upper end of the mainboard 3. Through the above arrangement, the stability of the connection between the flexible antenna body 52 and the antenna assembly 11 can be ensured; As a further technical solution for implementing this solution, the external antenna 5 includes a storage shell 51, to which a flexible antenna body 52 and an inclined block 53 are fixedly connected. An outlet 54 is provided on the upper side of one end of the storage shell 51, and a control unit 55 is slidably connected to the interior of the other end of the storage shell 51. Through the above arrangement, the length of the flexible antenna body 52 exposed to the outside can be adjusted according to actual needs; As a technical solution further implemented in this solution, the control unit 55 includes two control panels 551, and a first roller 552 and a second roller 553 are rotatably connected between the control panels 551. Two first rollers 552 are provided, and the first rollers 552 are arranged on the outside of the bending part of the U-shaped flexible antenna body 52. ​​There is one second roller 553, and the second roller 553 is arranged on the inside of the bending part of the U-shaped flexible antenna body 52. ​​Through the above arrangement, the stability of the adjustment of the flexible antenna body 52 can be ensured; As a technical solution for further implementation of this scheme, the storage shell 51 is fixedly connected to one side of the upper end of the outer shell 2. Both ends of the storage shell 51 are provided with slots for positioning the control panel 551. The horizontal projection of the control panel 551 is T-shaped, and the side of the control panel 551 away from the center point of the outer shell 2 is provided with linearly arranged vertical slots. Through the above arrangement, the stability of the control panel 551 during movement can be guaranteed.

[0019] As a technical solution for further implementation of this solution, step 1: packaging and fixing: first place the fixing base plate 1 on the predetermined installation position, ensuring that it is stable and fits well with the installation surface; Next, place the outer shell 2 on the upper end of the fixed base plate 1, and install the main board 3 inside the outer shell 2 so that the main board 3 and the outer shell 2 fit tightly together to complete the preliminary main body assembly; During this process, the main chip 6, SIM 7, MCU 8, CNSS positioning 9, RF front end 10, antenna assembly 11 and sensor 12 are installed at the corresponding positions on one side of the upper end of the mainboard 3, and the external antenna 5 is installed on the upper end of the antenna assembly 11. Ensure that the external antenna 5 and the antenna assembly 11 are electrically connected to ensure signal transmission function; The connectors 4 installed at the four corners are fixed by the lower end of the fixing column 41. During the fixing process, the first gear 422 is driven to rotate by rotating the control block 421, and then the second gear 4232 drives the rotating shaft 4231 and the semicircular block 4233 to rotate, which is used to connect with the fixed end. After the connection is completed, the upper end of the semicircular block 4233 is tightly attached to the lower end of the fixed end, the lower end of the rubber ring 45 is connected to the upper end of the fixed end, and the lower end of the fixing column 41 is located inside the opening of the fixed end; Step 2: Debugging: According to actual needs, control the control unit 55 to move, thereby adjusting the length of the flexible antenna body 52 exposed to the outside; During the movement of the control unit 55, the first roller 552 and the second roller 553 are provided to change the bending position of the flexible antenna body 52 to achieve adjustment. During the adjustment process, the control board 551 is used to ensure the stability of the control unit 55 during movement. Step 3: Operation: After the installation is complete, power on the 5G communication module to ensure stable operation, and conduct a pre-operation test on the powered-on 5G communication module using dedicated test equipment; Step 4: Post-maintenance: Clean the device's housing 2 regularly, wipe its surface with a clean soft cloth to remove dust and stains; At regular intervals, recheck the connection and fastening of the connectors 4 at the four corners of the base plate 1, and check whether the fixing column 41, the adjustment plate 44, the locking unit 42 and other components are loose, worn or damaged. If so, tighten, repair or replace them in time; Maintain the external antenna 5, checking whether the storage housing 51 is damaged or deformed, whether the flexible antenna body 52 is creased or broken, and whether the control unit 55 is functioning properly. If any problems are found, repair or replace the antenna assembly 11 or the external antenna 5 in a timely manner; If the main chip 6, SIM 7, MCU 8, CNSS positioning 9, RF front end 10 and sensor 12 on the mainboard 3 are found to be faulty or have performance degradation during the operation of the device, they should be replaced or upgraded in a timely manner.

[0020] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method of the present invention and its core ideas. The above is only a preferred implementation method of the present invention. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, they can make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the scope of protection of the present invention.

Claims

1. A compact packaging structure based on a 5G communication module, comprising a fixed base plate (1), a housing (2) and a main board (3), characterized in that: The upper end of the fixed base plate (1) is mounted with a housing (2) and a main board (3), the main board (3) is mounted inside the housing (2), an antenna assembly (11) is mounted on one side of the upper end of the main board (3), the upper end of the antenna assembly (11) is mounted with an external antenna (5), and connectors (4) are mounted on the four corners of the fixed base plate (1); The connecting member (4) includes a fixing column (41), a locking unit (42) is installed inside the fixing column (41), a fixing ring plate (43) is fixedly connected to the outer side of the lower end of the fixing column (41), an external thread (46) is provided on the outer side of the lower end of the fixing column (41), an adjusting plate (44) is spirally connected to the outer side of the fixing column (41) through the external thread (46), and a rubber ring (45) is fixedly connected to the lower end of the adjusting plate (44); The locking unit (42) comprises a control block (421), the middle of the lower end of the control block (421) is fixedly connected to the first gear (422), driven units (423) are installed on both sides of the first gear (422), and the driven unit (423) comprises a rotating shaft (4231), the upper end of the rotating shaft (4231) is fixedly connected to the second gear (4232), and the other end of the rotating shaft (4231) is fixedly connected to the semicircular block (4233); The regulating plate (44) comprises a plate body (441), the outer side of the plate body (441) is provided with anti-slip grooves (442) at equal intervals in a circular shape, and the interior of the plate body (441) is provided with internal threads (443).

2. The compact packaging structure based on the 5G communication module according to claim 1, characterized in that: A main chip (6), a SIM (7), an MCU (8), a GNSS positioning system (9), a radio frequency front end (10), and a sensor (12) are respectively installed on the upper end of the main board (3); the main chip (6), the SIM (7), the MCU (8), the GNSS positioning system (9), the radio frequency front end (10), and the sensor (12) are all arranged inside the housing (2).

3. The compact packaging structure based on the 5G communication module according to claim 1, characterized in that: The bottom end of the first gear (422) is rotationally connected to the fixed column (41), the first gear (422) and the second gear (4232) are meshed, the first gear (422) and the second gear (4232) are both installed inside the fixed column (41), and the rotating shaft (4231) is rotationally connected to the fixed column (41).

4. The compact packaging structure based on the 5G communication module according to claim 1, characterized in that: The transverse projections of the fixed column (41) and the control block (421) are both T-shaped, the fixed column (41) and the control block (421) are rotatably connected, and the fixed column (41) and the control block (421) are coaxially arranged.

5. The compact packaging structure based on the 5G communication module according to claim 1, characterized in that: The plate body (441) is spirally connected to an external thread (46) provided on the outside of the fixing column (41) via an internal internal thread (443). The lower end of the plate body (441) is fixedly connected to a rubber ring (45). Ring grooves are provided inside and outside the rubber ring (45).

6. The compact packaging structure based on the 5G communication module according to claim 1, characterized in that: The external antenna (5) is electrically connected to the antenna assembly (11) mounted on the upper end of the mainboard (3).

7. The compact packaging structure based on the 5G communication module according to claim 1, characterized in that: The external antenna (5) comprises a storage shell (51), a flexible antenna body (52) and an inclined block (53) being fixedly connected inside the storage shell (51), an outlet (54) being provided on the upper side of one end of the storage shell (51), and a control unit (55) being slidably connected inside the other end of the storage shell (51).

8. The compact packaging structure based on the 5G communication module according to claim 7, characterized in that: The control unit (55) includes two control panels (551), and a first roller (552) and a second roller (553) are rotatably connected between the control panels (551); Two first rollers (552) are provided, and the first rollers (552) are arranged outside the bending part of the U-shaped flexible antenna body (52); one second roller (553) is provided, and the second roller (553) is arranged inside the bending part of the U-shaped flexible antenna body (52).

9. The compact packaging structure based on the 5G communication module according to claim 7, characterized in that: The storage shell (51) is fixedly connected to one side of the upper end of the outer shell (2), and both ends of the storage shell (51) are provided with slots for positioning the control panel (551). The horizontal projection of the control panel (551) is T-shaped, and a side of the control panel (551) away from the center point of the outer shell (2) is provided with linearly arranged vertical slots.

10. A packaging method for a compact packaging structure based on a 5G communication module according to any one of claims 1 to 9, characterized in that: Step 1: Encapsulation and fixing: First, place the fixing base plate (1) on the predetermined installation position, ensuring that it is stable and fits well with the installation surface; Next, the housing (2) is placed on the upper end of the fixed base plate (1), and the main board (3) is installed inside the housing (2) so that the main board (3) and the housing (2) fit tightly together, thereby completing the preliminary main body assembly; During this process, the main chip (6), SIM (7), MCU (8), CNSS positioning (9), RF front end (10), antenna assembly (11) and sensor (12) are installed at corresponding positions on one side of the upper end of the main board (3), and the external antenna (5) is installed on the upper end of the antenna assembly (11), ensuring that the external antenna (5) and the antenna assembly (11) are electrically connected well to ensure the signal transmission function; The connecting members (4) installed at the four corners are fixed by the lower end portion of the fixing column (41). During the fixing process, the first gear (422) is driven to rotate by the rotating control block (421), and then the second gear (4232) drives the rotating shaft (4231) and the semicircular block (4233) to rotate, and is used to connect with the fixed end. After the connection is completed, the upper end of the semicircular block (4233) is tightly attached to the lower end of the fixed end, the lower end of the rubber ring (45) is connected to the upper end of the fixed end, and the lower end of the fixing column (41) is located inside the opening of the fixed end; Step 2: Debugging: According to actual needs, the control unit (55) is controlled to move, thereby adjusting the length of the flexible antenna body (52) exposed to the outside; During the movement of the control unit (55), the first roller (552) and the second roller (553) are provided to change the bending position of the flexible antenna body (52) to achieve adjustment, and during the adjustment process, the control board (551) is used to ensure the stability of the control unit (55) during the movement; Step 3: Operation: After the installation is complete, power on the 5G communication module to ensure stable operation, and conduct a pre-operation test on the powered-on 5G communication module using dedicated test equipment; Step 4: Post-maintenance: Clean the device's housing (2) regularly, using a clean soft cloth to wipe its surface to remove dust and stains; At regular intervals, recheck the connection and fastening of the connectors (4) at the four corners of the fixed base plate (1), and check whether the fixing column (41), the adjustment plate (44), the locking unit (42) and other components are loose, worn or damaged. If so, tighten, repair or replace them in a timely manner; Perform maintenance on the external antenna (5), check whether the storage shell (51) is damaged or deformed, whether the flexible antenna body (52) is creased or broken, and whether the control unit (55) is functioning normally. If there is any problem, repair or replace the antenna assembly (11) or the external antenna (5) in a timely manner; If any components such as the main chip (6), SIM (7), MCU (8), CNSS positioning (9), RF front end (10) and sensor (12) on the mainboard (3) are found to be faulty or have performance degradation during the operation of the device, they should be replaced or upgraded in a timely manner.

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