Movable radiation stray test system for millimeter wave radar

Abstract

The invention relates to the field of wireless communication equipment testing, in particular to a movable radiation stray testing system for a millimeter wave radar, which comprises a movable testing darkroom, a to-be-tested object bearing table, a rotation adjusting module, a temperature adjusting module, an antenna switching module and a wave absorbing module, the rotation adjusting module is used for driving a to-be-tested sample placed on the to-be-tested object bearing table to rotate, the temperature adjusting module is used for simulating a limit temperature range required by the to-be-tested sample, the antenna switching module is provided with a plurality of test antennas, and the antenna switching module is used for switching different test antennas. The target test antenna is arranged in the test space, one end of the target test antenna is located in the test space, the test sample is tested, the target test antenna is any one of the test antennas, and the wave absorbing module is arranged on the side wall of the test space and used for absorbing electromagnetic waves. The millimeter wave radar radiation stray test efficiency can be improved, and the test cost can be reduced.

Description

Technical Field

[0001] The present application relates to the field of wireless communication equipment testing, and in particular to a movable radiation spurious testing system for millimeter wave radar. Background Art

[0002] In the testing of wireless communication equipment, the radiated spurious test is to detect the radiated emission of communication equipment at frequencies outside the necessary bandwidth; the radiated spurious test mainly evaluates whether the equipment will emit electromagnetic radiation in an unexpected frequency range when working. The main purpose of the radiated spurious test is to ensure that the wireless equipment will not cause harmful effects on other equipment, wireless communication services or the electromagnetic environment during operation.

[0003] With the rise of millimeter-wave radar technology, its operating frequency exceeds 40GHz, and the standard test distance is 1 meter. Continuing to use the conventional 3-meter anechoic chamber for radiation spurious testing will increase the testing cost. In addition, due to the large size of the conventional 3-meter anechoic chamber, it is not only difficult to achieve radiation spurious testing under extreme temperatures, but the antenna replacement and sample adjustment process during the test is cumbersome, resulting in low efficiency of millimeter-wave radar sample testing. This situation needs to be improved. Summary of the invention

[0004] In order to improve the efficiency of millimeter-wave radar radiation spurious testing and reduce the testing cost, the present application provides a movable radiation spurious testing system for millimeter-wave radar.

[0005] The present application provides a portable radiation spurious test system for millimeter wave radar, which adopts the following technical solution: A movable radiation spurious test system for millimeter wave radar, comprising: A movable test darkroom, the movable test darkroom having a test space and an operating window for opening and closing the test space; An object-to-be-tested carrying platform, which is disposed in the test space and is used to place the object-to-be-tested sample; A rotation adjustment module, the rotation adjustment module is used to drive the sample to be tested placed on the test object carrying platform to rotate; A temperature regulating module, which is arranged on the test object carrying platform so that the test sample is placed inside the temperature regulating module, and is used to simulate the extreme temperature range required by the test sample; An antenna switching module, the antenna switching module is arranged on the side wall of the movable test chamber, the antenna switching module is provided with a plurality of test antennas, the antenna switching module is used to switch different test antennas so that one end of the target test antenna is located in the test space and the test sample is tested, the target test antenna is any one of the plurality of test antennas; A wave absorbing module is arranged on a side wall of the test space, and is used for absorbing electromagnetic waves.

[0006] By adopting the above technical solution, the movable test darkroom provides a test space for the sample to be tested. The specification of the movable test darkroom is 260CM*200CM*180CM. On the one hand, the movable design is convenient for moving and adjusting the position. On the other hand, the operator can replace the sample by opening the operation window. The staff can observe the test process through the operation window and place the sample on the test object carrier. During the test, the test object carrier is driven to rotate by the rotation adjustment module to ensure that the test covers all angles, so that the sample to be tested can be rotated during the test, so as to perform radiation stray test in all directions. In order to realize the radiation stray test at the extreme temperature, the temperature of the sample to be tested is adjusted by the temperature adjustment module. The radiation characteristics and performance of the sample to be tested at different temperatures are tested, and then different test antennas are switched through the antenna switching module so that a specific antenna port is located in the test space for radiation testing of the sample to be tested, and the absorbing module is installed on the side wall of the test space to absorb electromagnetic waves and avoid signal reflection and interference. The movable radiation spurious test system provided by the present application effectively combines the closure of the darkroom, the stability of the sample, the adjustability of the angle, the controllability of the temperature and the selectivity of the antenna, thereby improving the efficiency and accuracy of the millimeter-wave radar radiation spurious test, and the movable test darkroom design replaces the conventional 3-meter method radio wave darkroom, thereby improving the efficiency of the millimeter-wave radar radiation spurious test while reducing the test cost.

[0007] Optionally, the antenna switching module includes a connecting hole arranged on the outer wall of the movable test darkroom, a guide rail arranged on the outer wall of the movable test darkroom, an antenna base moving along the length direction of the guide rail, a driving source for driving the antenna base to move, an installation groove arranged on the antenna base and for the target test antenna to be embedded, and a driving member arranged on the antenna base; the driving source drives the antenna base to move along the length direction of the guide rail, and when the target test antenna corresponds to the connecting hole, the driving member moves the target test antenna from the installation groove to the connecting hole.

[0008] By adopting the above technical solution, a guide rail is installed on the outer wall of the movable test chamber, so that the antenna base carrying the target test antenna can be reciprocated along the length direction of the guide rail by the driving source, ensuring that the target test antenna can be accurately aligned with the connecting hole, and then the target test antenna is embedded in the connecting hole through the driving member, so that the test end of the target test antenna is located inside the test space to achieve the purpose of measuring the sample. This flexible antenna switching mechanism can significantly improve the efficiency and function of the millimeter wave radar test system, ensure accurate data during the radiation spurious test process, and at the same time simplify the operation process and reduce the need for manual intervention.

[0009] Optionally, the driving member includes a first cylinder arranged on the side of the antenna base away from the guide rail, a connecting frame used to connect the first cylinder and the antenna base, and a fixing frame fixedly connected to the output shaft of the first cylinder and used to fix the target test antenna; the first cylinder drives the fixing frame to move toward one side of the movable test chamber so that the target test antenna is located in the connecting hole, and the fixing frame is connected to the outer wall of the movable test chamber through a positioning assembly.

[0010] By adopting the above technical scheme, the driving part includes a first cylinder, a connecting frame and a fixing frame. The function of the first cylinder is to control the position and movement of the target test antenna through air pressure drive. The connecting frame is used to connect the first cylinder and the antenna base to ensure the stability of the installation of the first cylinder. The fixing frame is located between the first cylinder and the target test antenna and is responsible for fixing the target test antenna. When it is necessary to switch the antenna, the first cylinder is activated to push the fixing frame toward one side of the movable test chamber. This process ensures that the target test antenna moves from the mounting groove of the antenna base to the inside of the connecting hole to complete the switching action. In order to ensure the accurate position and stability of the target test antenna in the connecting hole, the fixing frame is connected to the outer wall of the movable test chamber through a positioning assembly. The system can use the first cylinder drive to achieve precise control and position switching of the antenna, thereby meeting the requirements for the antenna position and direction under different test conditions. This design makes the antenna switching process more automated and reliable, and improves the test efficiency and accuracy.

[0011] Optionally, the positioning assembly includes a positioning block arranged on the fixed frame near the side of the movable test darkroom, and a positioning groove arranged on the outer wall of the movable test darkroom near the side of the positioning block, and the fixed frame is connected to the movable test darkroom by embedding the positioning block into the positioning groove.

[0012] By adopting the above technical solution, the positioning block is located on the side of the fixed frame close to the movable test chamber. The positioning block is usually a protruding or raised part, which is used to ensure that the fixed frame can be accurately inserted into the positioning groove of the movable test chamber. The positioning groove is opened on the side of the outer wall of the movable test chamber close to the positioning block. By embedding the positioning block into the positioning groove, the fixed frame and the movable test chamber can be firmly connected. This design enables the fixed frame to remain stable during installation and use, and will not detach or lose its position due to movement or vibration. The design of the positioning block and the positioning groove provides a simple and effective way to ensure a reliable connection between the fixed frame and the movable test chamber, thereby supporting the accurate positioning and stability of the antenna, and further enhancing the performance and operability of the entire system.

[0013] Optionally, the temperature regulation module includes an insulation shell for covering the product to be tested, a temperature box for generating cold / hot air, and an air pipe for transporting cold / hot air from the temperature box to the insulation shell; after the temperature box generates cold / hot air, the cold / hot air is transported to the insulation shell through the air pipe to regulate the temperature inside the insulation shell.

[0014] By adopting the above technical solution, the main function of the insulation shell is to form a closed space inside to maintain a stable temperature environment. When the temperature of the object to be tested needs to be adjusted, the incubator generates gas (cold air or hot air) of the corresponding temperature according to the set control system. These gases are transported to the inside of the insulation shell through the air pipe. The temperature adjustment module can control and adjust the flow and temperature of the gas through the switch. The temperature inside the insulation shell is controlled and adjusted by the input cold / hot gas, thereby achieving precise temperature control of the object to be tested.

[0015] Optionally, the rotation adjustment module includes a control box, a support shaft disposed on the control box and used to connect the insulation shell, a rotating shaft disposed on the control box, a first motor disposed on the control box and used to drive the rotating shaft to rotate, and a turntable disposed on a side of the rotating shaft away from the first motor, and the test object carrier is fixed on the turntable.

[0016] By adopting the above technical solution, the rotation adjustment module includes a control box, a support shaft, a rotating shaft and a turntable. When it is necessary to rotate the test object carrier, the control system starts the first motor, and the first motor rotates the rotating shaft through its driving mechanism. The rotation of the rotating shaft drives the turntable fixed thereon, and the test object carrier fixed on the turntable also rotates accordingly, so that the angle adjustment and rotation of the test object can be achieved. It should be noted that the support shaft is a structure connecting the control box and the insulation shell, which provides stable support.

[0017] Optionally, a sealing plate is provided on the inner wall of the control box, the sealing plate is provided with a through hole for the rotating shaft to pass through, and a bearing cooperating with the rotating shaft is provided in the through hole.

[0018] By adopting the above technical solution, a sealing plate is installed on the inner wall of the control box, which can effectively seal the control box to prevent external dust, moisture or other contaminants from entering the interior, thereby protecting the internal mechanical parts and electronic components from damage or corrosion. A through hole is opened on the sealing plate for the shaft to pass through, and a bearing that matches the shaft is provided in the through hole. This design enables the shaft to maintain stable rotation during operation, reduces friction and wear, and extends the service life of the shaft and related components. The shaft is fixed to the inner wall of the control box through the bearing through hole on the sealing plate. This fixing method makes the structure of the entire rotation adjustment module more stable, reduces the possibility of vibration and loosening during operation, and improves the reliability and accuracy of the equipment.

[0019] Optionally, the absorbing module includes a plurality of absorbing cones disposed on side walls of the test space, so that the plurality of absorbing cones surround the test space.

[0020] By adopting the above technical solution, the absorbing module includes a plurality of absorbing cones, which are usually made of specific materials and have excellent electromagnetic wave absorption performance. The plurality of absorbing cones can effectively absorb the electromagnetic waves generated in the test space, prevent the reflection and interference of the beam, and ensure the accuracy and stability of the test environment. When the electromagnetic wave passes through the test space, the absorbing cone can reduce the reflection of the beam and reduce the echo interference through its structure and material properties, thereby improving the clarity and accuracy of the signal.

[0021] Optionally, the movable test darkroom includes a test box, a storage box for supporting the test box, and wheels disposed on the storage box, and the test space is located in the test box.

[0022] By adopting the above technical solution, the mobile test chamber consists of a test box, a storage box and wheels, making the entire device portable. Users can easily move the test chamber to different locations for use without disassembling or reassembling the equipment, saving time and labor. The mobile test chamber technical solution not only improves the portability and flexibility of the test equipment, but also effectively protects the test environment and improves operational efficiency. It is suitable for various test scenarios that require isolation and mobility.

[0023] Optionally, it further includes a chassis arranged on the outer wall of the movable test chamber, wherein a control terminal is arranged in the chassis, and the control terminal is communicatively connected with the target test antenna via a connecting line.

[0024] By adopting the above technical solution, by setting up a chassis and a control terminal, and communicating with the target test antenna through a connecting line, the movable test chamber not only has the functions of centralized control and remote operation, but also can ensure reliable transmission and safe management of data. It is suitable for testing and experimental scenarios that require high automation and integrated management.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. The portable radiation spurious test system provided by the present application effectively combines the closure of the darkroom, the stability of the sample, the adjustability of the angle, the controllability of the temperature and the selectivity of the antenna, thereby improving the efficiency and accuracy of the millimeter-wave radar radiation spurious test. The portable test darkroom design replaces the conventional 3-meter method radio wave darkroom, thereby improving the efficiency of the millimeter-wave radar radiation spurious test while reducing the test cost. 2. A guide rail is installed on the outer wall of the movable test chamber, so that the antenna base carrying the target test antenna can be reciprocated along the length direction of the guide rail by the driving source, ensuring that the target test antenna can be accurately aligned with the connection hole, and then the target test antenna is embedded in the connection hole by the driving member, so that the test end of the target test antenna is located inside the test space to achieve the purpose of measuring the sample. This flexible antenna switching mechanism can significantly improve the efficiency and function of the millimeter wave radar test system, ensure accurate data during the radiation spurious test process, and simplify the operation process and reduce the need for manual intervention; 3. The main function of the insulation shell is to form a closed space inside to maintain a stable temperature environment. When the temperature of the object to be tested needs to be adjusted, the incubator generates gas (cold air or hot air) of the corresponding temperature according to the set control system. These gases are transported to the inside of the insulation shell through the air pipe. The temperature adjustment module can control and adjust the flow and temperature of the gas through the switch. The temperature inside the insulation shell is controlled and adjusted by the input cold / hot gas, thereby achieving precise temperature control of the object to be tested. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a cross-sectional view of a movable test darkroom in an embodiment of the present application; Figure 2 is a schematic diagram of the structure of the test box and wheels in an embodiment of the present application; Figure 3 It is a schematic diagram of the structure of a movable test darkroom and an operating window in an embodiment of the present application; Figure 4 is an exploded diagram of the antenna switching module in an embodiment of the present application; Figure 5 is a cross-sectional view of an antenna switching module in an embodiment of the present application; Figure 6 In the embodiment of this application Figure 1A magnified view of part A; Figure 7 It is a schematic diagram of the target test antenna and the rotation adjustment module in the embodiment of the present application.

[0027] Description of reference numerals: 1. Movable test darkroom; 2. Test object carrier platform; 3. Rotation adjustment module; 4. Temperature adjustment module; 5. Antenna switching module; 6. Absorbing module; 7. Test space; 8. Operation window; 9. Target test antenna; 10. Connection hole; 11. Guide rail; 12. Antenna base; 14. Mounting slot; 15. Driving member; 16. First cylinder; 17. Connecting frame; 18. Fixing frame; 19. Positioning block; 20. Positioning slot; 21. Insulation shell; 22. Temperature box; 23. Air pipe; 24. Control box; 25. Support shaft; 26. Rotating shaft; 27. Turntable; 28. First motor; 29. ​​Sealing plate; 31. Bearing; 32. Absorbing cone; 33. Test box; 34. Storage box; 35. Wheels; 36. Chassis. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0029] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two components or the interaction relationship between two components, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0030] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0031] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0032] An embodiment of the present application discloses a movable radiation spurious test system for millimeter wave radar.

[0033] Reference Figure 1 and Figure 2 A movable radiation stray test system for millimeter wave radar includes a movable test chamber 1, a test object carrier 2, a rotation adjustment module 3, a temperature adjustment module 4, an antenna switching module 5 and an absorbing module 6; wherein the movable test chamber 1 is composed of a test box 33, a storage box 34 and wheels 35, so that the entire device has portability, and the user can easily move the test chamber to different locations for use without disassembling or reassembling the equipment, saving time and labor. The technical solution of the movable test chamber 1 not only improves the portability and flexibility of the test equipment, but also can effectively protect the test environment and improve operational efficiency, and is suitable for various test scenarios that require isolation and mobility.

[0034] Specifically, the specification of the movable test darkroom 1 is 260CM*200CM*180CM. On the one hand, the movable design is convenient for moving and adjusting the position. On the other hand, the operator can replace the sample by opening the operation window 8. The staff can observe the test process through the operation window 8 and place the sample on the test object carrier 2; the 3-meter radio wave darkroom in the prior art requires the staff to enter the interior on time to replace the sample, which reduces the test efficiency. Figure 2 and Figure 3 As shown, the movable test darkroom 1 in the present application has a test darkroom and an operation window 8, so that the staff can replace the sample to be tested by opening the operation window 8, thereby improving the efficiency of sample testing.

[0035] Since the standard test distance for radiated spurious tests above 40GHz is 1M, the portable radiated spurious test system provided by the present application is intended to reduce construction costs, and can be moved, can perform radiated spurious tests under extreme temperatures, increase test efficiency, reduce signal transmission loss, and can automatically switch the corresponding antenna, such as Figure 1 and Figure 2As shown, the sample to be tested is tested by the cooperation of the test object carrier 2, the rotation adjustment module 3, the temperature adjustment module 4, and the antenna switching module 5. During the test, the sample to be tested is placed on the test object carrier 2, and the rotation adjustment module 3 drives the test object carrier 2 to rotate to ensure that the test covers all angles, so that the sample to be tested can be rotated during the test, so as to perform radiation stray test in all directions. In order to achieve radiation stray test at extreme temperature, the temperature of the sample to be tested is adjusted by the temperature adjustment module 4 to test the radiation characteristics and performance of the sample to be tested at different temperatures. Then, different test antennas are switched by the antenna switching module 5 so that a specific antenna port is located in the test space 7 for performing radiation test on the sample to be tested, and the absorbing module 6 is installed on the side wall of the test space 7 to absorb electromagnetic waves and avoid signal reflection and interference.

[0036] Reference Figure 1 and Figure 2 The absorbing module 6 includes a plurality of absorbing cones 32 installed on the side walls of the test space 7, so that the plurality of absorbing cones 32 surround the test space 7. These absorbing cones 32 are usually made of a specific material and have excellent electromagnetic wave absorption performance. The plurality of absorbing cones 32 can effectively absorb the electromagnetic waves generated in the test space 7, prevent the reflection and interference of the beam, and ensure the accuracy and stability of the test environment. When the electromagnetic wave passes through the test space 7, the absorbing cones 32 can reduce the reflection of the beam and reduce the echo interference through their structure and material characteristics, thereby improving the clarity and accuracy of the signal.

[0037] Reference Figure 4 and Figure 5, the antenna switching module 5 is installed on the side wall of the movable test chamber 1, and the antenna switching module 5 has several test antennas. The antenna switching module 5 is used to switch different test antennas so that one end of the target test antenna 9 is located in the test space 7 and the test sample is tested. The target test antenna 9 is any one of the several test antennas. Specifically, the antenna switching module 5 includes a connecting hole 10, a guide rail 11, an antenna base 12, a driving source, a mounting groove 14 and a driving member 15. The connecting hole 10 is opened on the outer wall of the movable test chamber 1, and the movable test chamber 1 is connected to the outside through the connecting hole 10; several mounting grooves 14 are arranged in parallel on the antenna base 12 so that each test antenna (depending on the frequency of the sample, the corresponding antenna specifications are also different, for example, including but not limited to 40~60GHz, 60~90GHz, 90~140GHz, 100~170GHz, 170~22 0HGz, 220~300HGz) have corresponding installation slots 14 (the figure is only an example, and the specific number of installation slots 14 can be adjusted according to the number of test antennas required), the guide rail 11 is fixed on the outer wall of the movable test chamber 1 close to the connecting hole 10, and at least two guide rails 11 are installed. The two guide rails 11 play a guiding role, so that the antenna base 12 carrying the target test antenna 9 can be reciprocated along the length direction of the guide rail 11 by the driving source, ensuring that the target test antenna 9 can be accurately aligned with the connecting hole 10, and then the target test antenna 9 is embedded in the connecting hole 10 through the driving member 15, so that the test end of the target test antenna 9 is located inside the test space 7 to achieve the purpose of measuring the sample. This flexible antenna switching mechanism can significantly improve the efficiency and function of the millimeter wave radar test system, ensure accurate data in the process of radiation spurious testing, and simplify the operation process and reduce the need for manual intervention.

[0038] It should be noted that the driving source (not shown in the figure) can be a cylinder or a linear module. The cylinder is a common actuator that generates linear motion through compressed air or hydraulics. It has a simple principle, is easy to operate, and has a high force output capacity. The cylinder can choose different working modes according to application requirements, such as single-acting or double-acting cylinders, and cylinders with speed regulation and buffering functions. For example, the output shaft of the cylinder is fixedly connected to the antenna base 12, and the antenna base 12 is driven by the cylinder to move along the length direction of the guide rail 11; the linear module is an electric actuator, usually driven by an electric motor, and realizes linear motion through a screw or belt drive. The linear module can accurately control the speed and position of the movement and is suitable for applications that require high precision and repeatability.

[0039] Reference Figure 2The driving member 15 includes a first cylinder 16, a connecting frame 17 and a fixing frame 18. The function of the first cylinder 16 is to control the position and movement of the target test antenna 9 through air pressure drive. The connecting frame 17 is used to connect the first cylinder 16 and the antenna base 12 to ensure the stability of the installation of the first cylinder 16. The fixing frame 18 is located between the first cylinder 16 and the target test antenna 9 and is responsible for fixing the target test antenna 9. The first cylinder 16 is fixed to the side of the antenna base 12 away from the guide rail 11, and the first cylinder 16 is fixed to the antenna base 12 through the connecting frame 17. The target test antenna 9 is fixedly connected to the output shaft of the first cylinder 16 through the fixing frame 18. Specifically, when it is necessary to switch the antenna, the first cylinder 16 is activated to push the fixing frame 18 to move toward one side of the movable test chamber 1. This process ensures To ensure that the target test antenna 9 moves from the mounting slot 14 of the antenna base 12 to the inside of the connecting hole 10 to complete the switching action, and in order to ensure the accurate position and stability of the target test antenna 9 in the connecting hole 10, the fixing frame 18 is connected to the outer wall of the movable test darkroom 1 through a positioning component, wherein the positioning component includes a positioning block 19 and a positioning slot 20, the positioning block 19 is located on the side of the fixing frame 18 close to the movable test darkroom 1, the positioning block 19 is usually a protruding or raised part, which is used to ensure that the fixing frame 18 can be accurately inserted into the positioning slot 20 of the movable test darkroom 1, the positioning slot 20 is opened on the side of the outer wall of the movable test darkroom 1 close to the positioning block 19, by embedding the positioning block 19 into the positioning slot 20, the fixing frame 18 and the movable test darkroom 1 can be firmly connected.

[0040] The movable radiation stray test system also includes a chassis 36, which is installed on the outer wall of the movable test chamber 1. A control terminal (not shown in the figure) is arranged in the chassis 36, and is communicated with the target test antenna 9 through a connecting line. The movable test chamber 1 not only has the functions of centralized control and remote operation, but also can ensure reliable transmission and safe management of data, and is suitable for testing and experimental scenarios that require high automation and integrated management.

[0041] Reference Figure 6, the temperature regulating module 4 includes a heat preservation shell 21, a temperature box 22 and an air pipe 23, and the rotation regulating module 3 includes a control box 24, a support shaft 25, a rotating shaft 26, a first motor 28 and a turntable 27. The main function of the heat preservation shell 21 is to form a closed space inside to maintain a stable temperature environment. When the temperature of the object to be measured needs to be adjusted, the temperature box 22 generates gas (cold air or hot air) of the corresponding temperature according to the set control system. These gases are transported to the inside of the heat preservation shell 21 through the air pipe 23. The temperature regulating module 4 can control and adjust the flow and temperature of the gas through the switch. The temperature inside the heat preservation shell 21 is controlled and adjusted by the input cold / hot gas, thereby achieving precise temperature control of the object to be measured and realizing the simulation of the extreme temperature (-40 degrees Celsius to 80 degrees Celsius). The specific connection structure of the temperature regulating module 4 and the rotation regulating module 3 is as follows: The control box 24 is installed in the test space 7, the first motor 28 is installed on the control box 24, and the opening and closing of the first motor 28 is controlled by the control box 24, so that the first motor 28 can drive the rotating shaft 26 to rotate, and the turntable 27 is fixed on the side of the rotating shaft 26 away from the first motor 28, and the object carrier 2 to be tested is fixed on the turntable 27; when it is necessary to rotate the object carrier 2 to be tested, the control box 24 starts the first motor 28, and the first motor 28 rotates the rotating shaft 26 through its driving mechanism, and the rotation of the rotating shaft 26 drives the turntable 27 fixed thereon, and the object carrier 2 to be tested fixed on the turntable 27 also rotates accordingly, so that the angle adjustment and rotation of the object to be tested can be achieved, that is, the rotating shaft 26, the turntable 27 and the object carrier 2 to be tested are driven by the first motor 28 to rotate simultaneously; but in the process of rotation, the heat preservation shell 21 does not need to rotate, so the support shaft 25 is installed between the control box 24 and the heat preservation shell 21 to provide stable support.

[0042] Furthermore, in order to effectively seal the control box 24 and prevent external dust, moisture or other contaminants from entering the interior, thereby protecting the internal mechanical parts and electronic components from damage or corrosion, a sealing plate 29 is installed on the inner wall of the control box 24. A through hole is opened on the sealing plate 29 for the rotating shaft 26 to pass through. In order to enable the rotating shaft 26 to maintain stable rotation during operation, reduce friction and wear, and extend the service life of the rotating shaft 26 and related components, a bearing 31 that cooperates with the rotating shaft 26 is provided in the through hole. The rotating shaft 26 is fixed to the inner wall of the control box 24 through the bearing 31 on the sealing plate 29. This fixing method makes the structure of the entire rotation adjustment module 3 more stable, reduces the possibility of vibration and loosening during operation, and improves the reliability and accuracy of the equipment.

[0043] In one embodiment, energy consumption can be reduced by optimizing the air pipe 23 between the insulation shell 21 and the temperature box 22, that is, by optimizing the length of the air pipe 23. For example, the shorter the length of the air pipe 23, the smaller the temperature loss during the transmission process. Specifically, the length of the air pipe 23 will directly affect the temperature loss during the transmission process. Generally speaking, the longer the air pipe 23, the more surface area will be exposed to the environment, causing heat to be more easily dissipated. Therefore, shortening the length of the air pipe 23 can reduce this heat loss, thereby reducing energy consumption. This optimized design can not only reduce operating costs, but also help improve the efficiency and reliability of the system.

[0044] In one embodiment, Figure 6 As shown, in order to reduce the problem of temperature difference between the inside and outside of the inner cavity of the insulation shell 21, which easily generates water droplets, in order to reduce the impact, a water receiving device is added in the embodiment of the present application. The water-saving device includes a water receiving shell 100 and a water receiving sponge 101 installed in the water receiving shell 100, so that the water receiving sponge 101 absorbs the moisture generated by the temperature difference. By using the water receiving sponge 101, the accumulation of moisture caused by the temperature difference can be effectively reduced, thereby avoiding the impact of water droplets on the environment. By controlling the generation of moisture, the equipment can be kept in the best working state and its service life can be extended.

[0045] like Figure 7 As shown, a schematic diagram of a test box 34 and a storage box 35 is shown, wherein the test box 34 contains a virtual position diagram of a target test antenna 9, a rotation adjustment module 3 and an absorbing module 6, and the storage box 35 can be used to accommodate a switch control unit, a turntable control unit, a power supply, a filter and other devices used to control the test system.

[0046] The implementation principle of a movable radiation spurious test system for millimeter-wave radar in an embodiment of the present application is as follows: a movable test darkroom 1 provides a test space 7 for a sample to be tested. On the one hand, the movable design facilitates movement and position adjustment. On the other hand, the operator can replace the sample by opening an operation window 8. The operator can observe the test process through the operation window 8 and place the sample on a test object carrier 2. During the test, the test object carrier 2 is driven to rotate by a rotation adjustment module 3 to ensure that the test covers all angles, so that the sample to be tested can be rotated during the test so as to perform radiation spurious test in all directions. In order to realize radiation spurious test at extreme temperature, the temperature of the sample to be tested is adjusted by a temperature adjustment module 4 to adjust the temperature around the sample to be tested. The radiation characteristics and performance of the sample to be tested at different temperatures are tested, and then different test antennas are switched through the antenna switching module 5 so that a specific antenna port is located in the test space 7 for performing radiation testing on the sample to be tested, and the absorbing module 6 is installed on the side wall of the test space 7 to absorb electromagnetic waves and avoid signal reflection and interference. The movable radiation spurious test system provided by the present application effectively combines the closure of the darkroom, the stability of the sample, the adjustability of the angle, the controllability of the temperature and the selectivity of the antenna, thereby improving the efficiency and accuracy of the millimeter-wave radar radiation spurious test, and the movable test darkroom 1 design replaces the conventional 3-meter method radio wave darkroom, thereby improving the efficiency of the millimeter-wave radar radiation spurious test while reducing the test cost.

[0047] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A portable radiation spurious test system for millimeter wave radar, characterized in that: include: A movable test darkroom (1), the movable test darkroom (1) having a test space (7) and an operating window (8) for opening and closing the test space (7); A test object carrier platform (2), the test object carrier platform (2) is arranged in the test space (7) and is used to place the test sample; A rotation adjustment module (3), the rotation adjustment module (3) being used to drive the sample to be tested placed on the sample to be tested supporting platform (2) to rotate; A temperature regulating module (4), the temperature regulating module (4) being arranged on the test object carrying platform (2) so that the test sample is placed inside the temperature regulating module (4), and the temperature regulating module (4) being used to simulate the extreme temperature range required by the test sample; An antenna switching module (5), the antenna switching module (5) being arranged on a side wall of the movable test darkroom (1), the antenna switching module (5) being provided with a plurality of test antennas, the antenna switching module (5) being used to switch between different test antennas so that one end of a target test antenna (9) is located in the test space (7) and the test sample is tested, the target test antenna (9) being any one of the plurality of test antennas; A wave absorbing module (6), the wave absorbing module (6) being arranged on a side wall of the test space (7), and the wave absorbing module (6) being used for absorbing electromagnetic waves.

2. The portable radiation spurious test system for millimeter wave radar according to claim 1, characterized in that: The antenna switching module (5) comprises a connection hole (10) arranged on the outer wall of the movable test darkroom (1), a guide rail (11) arranged on the outer wall of the movable test darkroom (1), an antenna base (12) movable along the length direction of the guide rail (11), a driving source for driving the antenna base (12) to move, a mounting groove (14) arranged on the antenna base (12) and for the target test antenna (9) to be embedded, and a driving member (15) arranged on the antenna base (12); the driving source drives the antenna base (12) to move along the length direction of the guide rail (11), and when the target test antenna (9) corresponds to the connection hole (10), the driving member (15) moves the target test antenna (9) from the mounting groove (14) to the inside of the connection hole (10).

3. The portable radiation spurious test system for millimeter wave radar according to claim 2, characterized in that: The driving member (15) comprises a first cylinder (16) arranged on a side of the antenna base (12) away from the guide rail (11), a connecting frame (17) for connecting the first cylinder (16) and the antenna base (12), and a fixing frame (18) fixedly connected to the output shaft of the first cylinder (16) and used to fix the target test antenna (9); the first cylinder (16) drives the fixing frame (18) to move toward one side of the movable test darkroom (1) so that the target test antenna (9) is located in the connecting hole (10), and the fixing frame (18) is connected to the outer wall of the movable test darkroom (1) through a positioning component.

4. The portable radiation stray test system for millimeter wave radar according to claim 3, characterized in that: The positioning assembly comprises a positioning block (19) arranged on a side of the fixed frame (18) close to the movable test darkroom (1), and a positioning groove (20) arranged on an outer wall of the movable test darkroom (1) close to the positioning block (19), and the fixed frame (18) is connected to the movable test darkroom (1) by the positioning block (19) being embedded in the positioning groove (20).

5. The portable radiation spurious test system for millimeter wave radar according to claim 1, characterized in that: The temperature regulating module (4) comprises a heat-insulating shell (21) for covering the product to be tested, a temperature box (22) for generating cold / hot air, and an air pipe (23) for transporting the cold / hot air from the temperature box (22) to the heat-insulating shell (21); after the temperature box (22) generates the cold / hot air, the cold / hot air is transported to the heat-insulating shell (21) through the air pipe (23), so as to regulate the temperature inside the heat-insulating shell (21).

6. The portable radiation spurious test system for millimeter wave radar according to claim 5, characterized in that: The rotation adjustment module (3) comprises a control box (24), a support shaft (25) arranged on the control box (24) and used to connect the heat preservation shell (21), a rotating shaft (26) arranged on the control box (24), a first motor (28) arranged on the control box (24) and used to drive the rotating shaft (26) to rotate, and a turntable (27) arranged on a side of the rotating shaft (26) away from the first motor (28), and the test object carrier (2) is fixed on the turntable (27).

7. The portable radiation stray test system for millimeter wave radar according to claim 6, characterized in that: The inner wall of the control box (24) is provided with a sealing plate (29), the sealing plate (29) is provided with a through hole for the rotating shaft (26) to pass through, and a bearing (31) matched with the rotating shaft (26) is provided in the through hole.

8. The portable radiation stray test system for millimeter wave radar according to claim 1, characterized in that: The wave absorbing module (6) comprises a plurality of wave absorbing cones (32) arranged on the side walls of the test space (7), so that the plurality of wave absorbing cones (32) surround the test space (7).

9. The portable radiation spurious test system for millimeter wave radar according to claim 1, characterized in that: The movable test darkroom (1) comprises a test box (33), a storage box (34) for supporting the test box (33), and wheels (35) arranged on the storage box (34); the test space (7) is located in the test box (33).

10. The portable radiation spurious test system for millimeter wave radar according to claim 1, characterized in that: It also comprises a cabinet (36) arranged on the outer wall of the movable test darkroom (1), wherein a control terminal is arranged in the cabinet (36), and the control terminal is communicatively connected with the target test antenna (9) via a connecting line.

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