Movable integrated multi-probe spherical near-field air interface test equipment easy to disassemble and assemble

Abstract

The utility model relates to a movable integrated multi-probe spherical near-field air interface test device easy to disassemble and assemble, which adopts a split rectangular shielding shell, the shell is composed of a front rectangular shell part, a middle rectangular shell part and a rear rectangular shell part, the opening edge of each part is provided with a splicing port in an outward convex manner, and the splicing ports are connected through external bolts, so that the installation difficulty is greatly reduced, and the test efficiency is improved. Equipment assembly is very convenient and flexible, and assembly and disassembly can be completed quickly and easily; meanwhile, the equipment can be disassembled into small and light parts through the split structure, so that the transportation difficulty and cost are effectively reduced, and the transportation damage risk is reduced; a multi-probe sampling ring, a rotating platform and an integrated test electric box are ingeniously integrated in a cavity of the second rectangular shell part, the layout is compact and reasonable, external connection and wiring among components are reduced, and faults such as line looseness and poor interface contact are avoided; the equipment disclosed by the utility model optimizes all links from production to delivery by virtue of the improvement of the splicing flexibility, the convenience of installation and debugging and the improvement of the transportation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of spherical field antenna testing equipment, specifically, to a movable and easily detachable integrated multi-probe spherical near-field air interface testing device. Background Technology

[0002] With the rapid development of communication technology, multi-probe spherical near-field air interface testing equipment is becoming increasingly important in the field of wireless communication product performance testing. It can simulate real wireless environments and accurately test key indicators such as radiation performance and signal quality of various communication devices.

[0003] Existing multi-probe spherical near-field air interface testing equipment suffers from numerous drawbacks. From a structural design perspective, its assembly method is extremely rigid, typically employing an integral or a few large component-assembled structure. The connections between components are complex and fixed, making it difficult to flexibly adjust according to actual usage scenarios and transportation conditions. From the perspective of core component integration, the current equipment suffers from a severe lack of integration. Key components such as the multi-probe sampling ring, rotating platform, and test electrical box are separated and installed independently, not only occupying a large amount of space but also requiring numerous lines and interfaces for connection.

[0004] All of the above problems inevitably lead to excessively long production and delivery cycles for equipment. From the production perspective, the complex structural design and assembly process result in low production efficiency, making it difficult to meet the market's rapid demand for equipment. In the delivery stage, difficulties in transportation and installation further prolong the delivery time.

[0005] In summary, the existing multi-probe spherical near-field air interface testing equipment has problems in terms of assembly flexibility, core component integration, and production delivery cycle, which have become important factors restricting the development of this field. Utility Model Content

[0006] To address the problems of poor assembly flexibility, low integration of core components, insufficient stability, and transportation difficulties in existing spherical field antenna testing equipment, this utility model provides a movable and easily disassembled integrated multi-probe spherical near-field air interface testing device.

[0007] The technical solution of this utility model is as follows:

[0008] A portable and easily detachable integrated multi-probe spherical near-field air interface testing device includes a split rectangular shielding housing. The split rectangular shielding housing includes a first rectangular housing section, a second rectangular housing section, and a third rectangular housing section. The cavities of the first and third rectangular housing sections are provided with multiple annularly distributed absorbing materials to form absorbing rings. The cavity of the second rectangular housing section is provided with a multi-probe sampling ring and a rotating platform located at the center of the ring, as well as an integrated testing electrical box. The rear opening edge of the first rectangular housing section, the front and rear opening edges of the second rectangular housing section, and the front opening edge of the third rectangular housing section are all provided with splicing interfaces protruding outward. When the three rectangular housing sections are spliced ​​sequentially through the splicing interfaces, the two absorbing rings are symmetrical about the front and rear sides of the multi-probe sampling ring.

[0009] As a preferred embodiment of this utility model, the splicing interface is provided with a plurality of bolt mounting holes, so that the first rectangular shell part, the second rectangular shell part and the third rectangular shell part are connected by bolts.

[0010] As a preferred embodiment of this utility model, the inner ring surface of the multi-probe sampling ring is provided with multiple cross-shaped sampling probes.

[0011] As a preferred embodiment of this utility model, the lowest end of the multi-probe sampling ring is provided with a through hole; a rotating mechanism is provided at the center of the bottom of the cavity of the second rectangular housing, and the support rod of the rotating mechanism is connected to the rotating platform at the center of the ring through the through hole.

[0012] Preferably, the rotating platform is made of sponge.

[0013] Preferably, the supporting poles and rotating platform are made of materials with low dielectric constants, such as foam, bakelite, and fiberglass.

[0014] As a preferred embodiment of this utility model, the integrated test box is located in the gap between the multi-probe sampling ring and the housing of the second rectangular housing.

[0015] As a preferred embodiment of this utility model, the second rectangular housing portion has a mounting cavity located below the multi-probe sampling ring, the mounting cavity being used to mount the integrated test box and several test instruments.

[0016] Furthermore, the test instruments include vector network analyzers, integrated testers, signal generators, spectrum analyzers, etc.

[0017] As a preferred embodiment of this utility model, a plurality of wave-absorbing materials are further laid at the bottom of the cavity of the first rectangular shell portion and the third rectangular shell portion.

[0018] As a preferred embodiment of this utility model, the absorbing material of the first rectangular shell portion and the third rectangular shell portion is in the shape of a pointed cone, and a circular support frame is installed inside the cavity of the two rectangular shell portions, and the absorbing ring is installed on the circular support frame.

[0019] Preferably, the circular support frame is made of an alloy material.

[0020] Preferably, the material used for absorbing electromagnetic waves is polyurethane foam or rigid EPP foam containing electromagnetic wave absorbers.

[0021] Preferably, the electromagnetic wave absorber is ferrite or carbon powder, etc.

[0022] As a preferred embodiment of this utility model, a highly conductive spring-loaded shielding door is installed at the front end of the first rectangular housing portion, and a closed back plate is provided at the rear end of the third rectangular housing portion.

[0023] Furthermore, the outer wall of the high conductivity spring-loaded shielding door is provided with a handle and a pressure relief valve stem, and its inner wall is provided with multiple frustum-shaped wave-absorbing materials.

[0024] Furthermore, the rear end sealing backplate of the third rectangular housing portion is formed by splicing a left sealing plate and a right sealing plate.

[0025] As a preferred embodiment of the present invention, ventilation waveguide windows are provided on both sides of the top of the third rectangular housing portion, and the ventilation waveguide windows have honeycomb vents and are equipped with cooling fans.

[0026] As a preferred embodiment of this utility model, the bottom of the first rectangular housing portion, the second rectangular housing portion and the third rectangular housing portion are all provided with casters.

[0027] The advantages of this utility model based on the above solution are as follows:

[0028] This utility model adopts a split rectangular shielding shell, which is divided into three rectangular shell parts: front, middle, and rear. The opening edges of each part have outward-protruding splicing interfaces, which realize external bolts and reduce the difficulty of installation. This makes the equipment more convenient and flexible to assemble and disassemble quickly and easily, greatly improving the adaptability and installation efficiency of the equipment. All components involved in the implementation of the testing function, such as the multi-probe sampling ring, rotating platform, and integrated test electrical box, are integrated and installed in the second rectangular shell part located in the middle position. The testing function is highly concentrated in a specific area, which not only simplifies the internal connection structure of the equipment, but also facilitates the transportation, installation, debugging, and subsequent maintenance and upgrade of the equipment.

[0029] Furthermore, the modular design allows the equipment to be disassembled into multiple relatively small and lightweight parts, with dimensions and weight that meet the transportation standards of shopping mall elevators and common transport containers, greatly reducing transportation difficulty and costs.

[0030] The two absorbing rings of the first rectangular housing and the third rectangular housing are symmetrically distributed on the front and rear sides of the multi-probe sampling ring. They can absorb external interference electromagnetic waves more comprehensively and efficiently, effectively reduce the interference of external electromagnetic signals on the signals collected by the multi-probe sampling ring, and improve the electromagnetic purity of the test environment. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of this utility model;

[0032] Figure 2 This is a schematic diagram showing the device of this utility model disassembled into three rectangular housing parts;

[0033] Figure 3 This is a schematic diagram of the structure of the second rectangular shell section;

[0034] Figure 4 This is a schematic diagram of the third rectangular shell section.

[0035] In the diagram,

[0036] 1. First rectangular housing section; 11. High conductivity spring-loaded shielding door;

[0037] 2. Second rectangular housing section; 21. Sampling ring bracket; 22. Multi-probe sampling ring; 23. Rotating platform; 24. Supporting rod; 25. Rotating mechanism; 26. Integrated test box;

[0038] 3. Third rectangular housing section; 31. Enclosed back panel; 32. Ventilation waveguide window;

[0039] 41. Conical microwave absorbing material; 42. Frustum-shaped microwave absorbing material; 43. Circular ring support frame;

[0040] 5. Connect the interfaces;

[0041] 6. Casters. Detailed Implementation

[0042] To better understand the purpose, technical solution, and technical effects of this utility model, the following description, in conjunction with the accompanying drawings and embodiments, will provide further explanation. It should be noted that similar reference numerals and letters in the following drawings indicate similar items; therefore, once an item is defined in one drawing, it does not need further definition and explanation in subsequent drawings. It is also stated that the embodiments described below are only for explaining this utility model and are not intended to limit it.

[0043] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is referred to as "connected to" another component, it can be directly connected to the other component or there may be an intermediate component.

[0044] The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product is usually placed when in use, or the orientation or positional relationship in which a person skilled in the art would normally understand it, or the orientation or positional relationship in which the product is usually placed when in use. It is only for the purpose of facilitating the description of this application and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0045] The terms “first,” “second,” and “third” are used for descriptive purposes only and should not be construed as indicating or implying relative importance or specifying the number of technical features. “Several” means two or more, unless otherwise expressly and specifically defined.

[0046] like Figure 1 and Figure 2 As shown, a movable and easily detachable integrated multi-probe spherical near-field air interface testing device includes a split rectangular shielded housing. The split rectangular shielded housing comprises a first rectangular housing section 1, a second rectangular housing section 2, and a third rectangular housing section 3. The rear opening edge of the first rectangular housing section 1, the front and rear opening edges of the second rectangular housing section 2, and the front opening edge of the third rectangular housing section 3 all have outwardly protruding splicing interfaces 5. Multiple wave-absorbing materials in a ring arrangement are arranged inside the cavities of the first rectangular housing section 1 and the third rectangular housing section 3, forming wave-absorbing rings. Several wave-absorbing materials are also laid at the bottom of the cavities. The cavity of the second rectangular housing section 2 contains a multi-probe sampling ring 22 and a rotating platform 23 located at the center of the ring. When the three rectangular housing sections are sequentially spliced ​​together through the splicing interfaces 5, the two wave-absorbing rings of the first rectangular housing section 1 and the third rectangular housing section 3 are symmetrically distributed on the front and rear sides of the multi-probe sampling ring 22, which can more comprehensively and efficiently absorb external interference electromagnetic waves, effectively reducing the interference of external electromagnetic signals on the signals collected by the multi-probe sampling ring 22, and improving the electromagnetic purity of the testing environment.

[0047] like Figure 3As shown, the second rectangular housing 2 also includes an integrated test box 26. The integrated test box 26 integrates multiple functions such as signal processing and control, and is housed within the cavity of the second rectangular housing 2, located in the gap between the multi-probe sampling ring 22 and the housing. The integrated test box 26 integrates numerous previously independent functional modules into a single enclosure, greatly simplifying the internal wiring structure and reducing the equipment's size. This not only enhances the equipment's stability and reduces the probability of failure but also makes installation, debugging, and maintenance more convenient. All components involved in the testing function, such as the multi-probe sampling ring 22, the rotating platform 23, and the integrated test box 26, are integrated and installed in the second rectangular housing 2, which is located in the middle. This highly concentrates the testing functions in a specific area, simplifying the internal connection structure and facilitating transportation, installation, debugging, and subsequent maintenance and upgrades. The second rectangular housing 2 integrates the multi-probe sampling ring 22, the rotating platform 23, and the integrated test box 26, shortening the signal transmission path between components, reducing external connections and wiring, lowering the risk of line failures, and ensuring test accuracy.

[0048] A mounting cavity is located within the cavity of the second rectangular housing and below the multi-probe sampling ring. The mounting cavity is used to mount the integrated test box and several test instruments, including a vector network analyzer, a comprehensive tester, a signal generator, a spectrum analyzer, etc.

[0049] In terms of structural design, this invention adopts a detachable rectangular shielding shell with outwardly protruding splicing interfaces 5. External bolts connect the various parts, allowing for quick assembly and disassembly of the shell sections, simplifying the installation process and reducing installation difficulty. The first rectangular shell section 1 and the third rectangular shell section 3 have an inner ring layout and are lined with wave-absorbing material at the bottom, effectively absorbing stray electromagnetic waves, reducing interference, and creating a stable environment for testing. During transportation, the detachable structure allows the equipment to be disassembled into compact and lightweight parts, with dimensions and weight conforming to common transportation standards, reducing transportation difficulty and cost, and minimizing the risk of damage during transport.

[0050] In this invention, multiple bolt mounting holes are evenly distributed at the splicing interface 5. The first rectangular housing part 1, the second rectangular housing part 2, and the third rectangular housing part 3 are connected by bolts, resulting in a tighter and more stable connection between the parts. The bolt connection method is relatively simple to operate, and installation and disassembly can be completed using common tools. The multiple evenly distributed bolt mounting holes make it easier for installers to align the holes during splicing, eliminating the need for complex calibration operations, greatly shortening installation and disassembly time, and improving the maintainability and operational flexibility of the equipment.

[0051] The five evenly distributed bolt mounting holes at the splicing interface allow the bolts to distribute the force evenly across each rectangular shell section during connection. Based on mechanical principles, the synergistic effect of multiple bolts increases the number of connection points, thereby improving the reliability and stability of the connection.

[0052] like Figure 3 As shown, in this invention, the second rectangular housing 2 is provided with a sampling ring bracket 21, and a multi-probe sampling ring 22 is installed inside the second rectangular housing 2 through the sampling ring bracket 21. The inner ring surface of the multi-probe sampling ring 22 is provided with multiple cross-shaped sampling probes, greatly increasing the number of sampling points and sampling angles. This allows for simultaneous acquisition of signals within the test space from multiple directions, thereby obtaining more comprehensive and accurate radiation signal information of the device under test, and improving the accuracy and reliability of the test data. The through hole at the lowest end of the multi-probe sampling ring 22 cooperates with the rotating mechanism 25 at the bottom center of the cavity of the second rectangular housing 2, enabling the rotating platform 23 to rotate under the drive of the rotating mechanism 25. This increases the testing angle and dimensions of the device under test on the rotating platform 23, allowing for comprehensive and multi-angle testing of the device under test. When the rotating mechanism 25 is activated, based on the mechanical transmission principle, the rotational motion of the motor is converted into the rotation of the support rod 24, which in turn drives the rotating platform 23 to rotate.

[0053] By connecting the rotating mechanism 25 and the rotating platform 23 through the through hole, the various components are cleverly integrated into the cavity of the second rectangular housing part 2, making full use of the limited space, making the overall structure of the equipment more compact, reducing the size of the equipment, and facilitating the installation, transportation and storage of the equipment.

[0054] Among them, the cross-shaped sampling probe design is based on the spatial propagation characteristics of electromagnetic signals. The cross probes in different directions can capture electromagnetic wave signals from different angles. By using multiple probes to sample simultaneously, and based on the principles of signal superposition and spatial distribution, the complex electromagnetic signals can be perceived and collected in all directions, effectively avoiding signal omissions and ensuring that the collected data can truly reflect the radiation characteristics of the device under test, thereby achieving accurate sampling.

[0055] In a preferred embodiment, the rotating platform 23 and the supporting mast 24 are made of materials with low dielectric constants, such as sponge, foam, bakelite, and fiberglass, which minimize the absorption and reflection of electromagnetic waves. During testing, this reduces interference from the rotating platform 23 and the supporting mast 24 on the radiated signals of the device under test, ensuring that the acquired signals more accurately reflect the performance of the device under test and improving testing accuracy.

[0056] In a preferred embodiment, a high-conductivity spring-loaded shielding door 11 is installed at the front end of the first rectangular housing part 1, and a closed back plate 31 is provided at the rear end of the third rectangular housing part 3. The high-conductivity spring-loaded shielding door 11 at the front end of the first rectangular housing part 1 and the closed back plate 31 at the rear end of the third rectangular housing part 3, together with the split rectangular shielding housing, form a complete electromagnetic shielding space. The high-conductivity spring-loaded shielding door 11 utilizes the good conductivity of the spring to effectively block electromagnetic signal leakage; the closed back plate 31 at the rear end of the third rectangular housing part 3 completely seals the rear end, reducing external electromagnetic interference from entering the equipment, ensuring the electromagnetic purity of the test environment, and improving the accuracy of the test results. A plurality of pointed cone-shaped absorbing materials 41 are uniformly provided on the inner surface of the front plate of the first rectangular housing part 1 and the closed plate of the third rectangular housing part 3, further improving the absorption effect of the equipment on electromagnetic waves. A circular support frame 43 is installed inside the cavity of the first rectangular housing part 1 and the third rectangular housing part 3, and a plurality of pointed cone-shaped absorbing materials are uniformly assembled on the circular support frame, with the pointed ends facing the center of the ring. The circular support frame is preferably made of an alloy material.

[0057] The high-conductivity spring-loaded shielding door 11 has a handle and a pressure relief valve on its outer wall. The handle facilitates opening and closing the equipment, while the pressure relief valve balances the internal and external air pressure, preventing equipment damage or safety hazards caused by pressure differences. The inner wall of the high-conductivity spring-loaded shielding door 11 is equipped with multiple frustum-shaped absorbing materials 42. Their special conical structure increases the absorption area, thereby increasing the absorption area and absorption effect of internal electromagnetic signals. When internal electromagnetic signals propagate to the shielding door, the conical absorbing materials can more effectively convert electromagnetic energy into heat or other forms of energy, reducing signal reflection and interference. The rear end sealing backplate 31 of the third rectangular housing part 3 is composed of a left sealing plate and a right sealing plate. This splicing design of the rear end sealing backplate 31 of the third rectangular housing part 3 facilitates opening the backplate for internal inspection and maintenance when needed.

[0058] like Figure 4 As shown, in a preferred embodiment, ventilation waveguide windows 32 are provided on both sides of the top of the third rectangular housing 3, and equipped with cooling fans. These fans can quickly dissipate heat generated inside the device, preventing performance degradation or component damage due to overheating, ensuring stable operation, and extending the device's lifespan. The honeycomb perforation design of the ventilation waveguide windows 32 effectively blocks electromagnetic signal leakage while achieving ventilation and heat dissipation. When electromagnetic waves propagate to the honeycomb perforation, they undergo multiple reflections and attenuations within the perforations, preventing them from penetrating and leaking out. This maintains the electromagnetic shielding environment inside the device and ensures the accuracy of test results.

[0059] In a preferred embodiment, all three rectangular housing sections are equipped with casters 6 at their bottoms, enabling the entire testing equipment to move easily in different locations, greatly improving the equipment's flexibility and meeting the needs of various testing scenarios, such as moving between laboratories and setting up temporary testing sites.

[0060] In this invention, the absorbing material is made of polyurethane sponge or rigid EPP foam with an electromagnetic wave absorber, and the electromagnetic wave absorber is ferrite or carbon powder, etc.

[0061] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0062] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A portable and easily detachable integrated multi-probe spherical near-field air interface testing device, characterized in that, The device includes a split rectangular shielding housing, which comprises a first rectangular housing section, a second rectangular housing section, and a third rectangular housing section. The cavities of the first and third rectangular housing sections are provided with absorbing rings formed by multiple absorbing materials arranged in a ring. The cavity of the second rectangular housing section is provided with a multi-probe sampling ring and a rotating platform located at the center of the ring, and also includes an integrated test box. The rear opening edge of the first rectangular housing part, the front and rear opening edges of the second rectangular housing part, and the front opening edge of the third rectangular housing part are all provided with splicing interfaces protruding outward. When the three rectangular housing parts are spliced ​​together in sequence, the two absorbing rings are symmetrical about the front and rear sides of the multi-probe sampling ring.

2. The portable and easily detachable integrated multi-probe spherical near-field air interface testing device according to claim 1, characterized in that, The splicing interface is provided with multiple bolt mounting holes, so that the first rectangular shell part, the second rectangular shell part and the third rectangular shell part are connected by bolts.

3. The portable and easily detachable integrated multi-probe spherical near-field air interface testing device according to claim 1, characterized in that, The lowest end of the multi-probe sampling ring is provided with a through hole; a rotating mechanism is provided at the center of the bottom of the cavity of the second rectangular housing, and the support rod of the rotating mechanism is connected to the rotating platform at the center of the ring after passing through the through hole.

4. The portable and easily detachable integrated multi-probe spherical near-field air interface testing device according to claim 1, characterized in that, The integrated test box is located in the gap between the multi-probe sampling ring and the housing of the second rectangular housing.

5. The portable and easily detachable integrated multi-probe spherical near-field air interface testing device according to claim 1, characterized in that, The bottom of the cavity of the first rectangular shell portion and the third rectangular shell portion are also covered with a number of wave-absorbing materials.

6. The movable and easily detachable integrated multi-probe spherical near-field air interface testing device according to claim 1 or 5, characterized in that, The absorbing material of the first rectangular shell portion and the third rectangular shell portion is in the shape of a pointed cone. A circular support frame is installed inside the cavity of the two rectangular shell portions, and the absorbing ring is installed on the circular support frame.

7. The portable and easily detachable integrated multi-probe spherical near-field air interface testing device according to claim 1, characterized in that, The front end of the first rectangular housing is equipped with a high-conductivity spring-loaded shielding door, and the rear end of the third rectangular housing is provided with a closed back plate.

8. The portable and easily detachable integrated multi-probe spherical near-field air interface testing device according to claim 7, characterized in that, The outer wall of the high-conductivity spring-loaded shielding door is equipped with a handle and a pressure relief valve stem, and its inner wall is equipped with multiple frustum-shaped wave-absorbing materials.

9. The portable and easily detachable integrated multi-probe spherical near-field air interface testing device according to claim 1, characterized in that, The top two sides of the third rectangular housing are provided with ventilation waveguide windows, which have honeycomb vents and are equipped with cooling fans.

10. The portable and easily detachable integrated multi-probe spherical near-field air interface testing device according to claim 1, characterized in that, The bottom of the first rectangular housing portion, the second rectangular housing portion, and the third rectangular housing portion are all provided with casters.

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