Intelligent network connection terminal multi-parameter comprehensive test system and method

Abstract

The invention discloses an intelligent network connection terminal multi-parameter comprehensive test system and method, and belongs to the technical field of test. According to the invention, a strategy of multifunctional integration and modular integration is adopted, and four different test function units are realized in one camera obscura; a multi-intelligent module integrated test technology based on space-time joint optimization is adopted, and by performing reverse windowing processing on a windowing overlapping filtering algorithm, adding differential constraint to a power inversion processing algorithm, optimizing a correlation matrix and performing variable step size iteration, reflection interference among different devices is solved, and compatibility among test units is realized; high-low frequency multi-probe wall development and system overall structure design are adopted, and the problem that an air interface wireless environment is difficult to simulate under the multi-mode and multi-frequency condition of a vehicle-mounted communication module is solved; according to the invention, millimeter wave radar module testing, communication module testing, navigation positioning module testing and antenna radio frequency performance testing can be realized, the testing requirements of the composite multifunctional integrated module are met, the testing efficiency of the automobile module is effectively improved, and the testing cost is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of testing, and particularly relates to an intelligent networked terminal multi-parameter comprehensive testing system and method. Background Art

[0002] To achieve functions such as high-level autonomous driving, intelligent navigation, and remote control, intelligent networked vehicles are equipped with multiple functional modules such as communication, radar, and navigation. High-precision testing of the performance of each module is an important basis for the vehicle to achieve high-level autonomous driving, ensure the quality of the whole vehicle, and the safety of the driver's life. With the development of technology, vehicle modules are gradually moving from single-functional modules to composite multi-functional modules. The existing testing method for vehicle modules is single-module testing, which requires the use of multiple sets of instrument equipment to separately examine the performance of each module. How to quickly, comprehensively, and efficiently evaluate the module performance is a crucial issue. Therefore, there is an urgent need for an instrument or system that can achieve integrated testing of multiple vehicle modules and improve the testing efficiency.

[0003] The existing testing method for vehicle modules is to use dedicated testing instruments for each module for separate testing. For example, a communication module tester based on multi-probe testing technology is used to test the performance of in-vehicle communication modules, and a millimeter-wave radar tester based on a reflector-type anechoic chamber is used to test the performance of in-vehicle millimeter-wave radar modules.

[0004] The existing single-module testing method is to separately test different modules through dedicated testing instruments for each module. If a complete test of the vehicle's entire set of modules is required, multiple sets of testing instruments are needed, resulting in low testing efficiency, high testing costs, and it is not suitable for the testing of multi-functional integrated modules either. Summary of the Invention

[0005] In view of the above technical problems existing in the prior art, the present invention proposes an intelligent networked terminal multi-parameter comprehensive testing system and method, with reasonable design, overcoming the deficiencies of the prior art, and having good effects.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] An intelligent networked terminal multi-parameter comprehensive testing system, comprising:

[0008] A metal shielding case (1), configured to block external electromagnetic interference and prevent internal electromagnetic waves from leaking;

[0009] A plurality of microwave absorbing materials (2), configured to absorb reflected electromagnetic waves, reduce reflected wave interference, and simulate free space propagation conditions;

[0010] An integrated testing anechoic chamber, which integrates four testing units inside:

[0011] The antenna radio frequency performance test unit is configured to test the radio frequency performance of the antenna;

[0012] The vehicle-mounted communication module test unit is configured to test the performance of the vehicle-mounted communication module;

[0013] The millimeter-wave radar module test unit is configured to test the performance of the millimeter-wave radar module;

[0014] The navigation and positioning module test unit is configured to test the performance of the navigation and positioning module. The navigation and positioning module test unit includes a link establishment antenna, a vector signal source, and a satellite positioning module test component;

[0015] The turntable (6) is configured to install and position the module under test and has multi-axis mechanical movement capabilities, including an azimuth axis, a polarization axis, and an elevation axis;

[0016] The guide rail (7) is used to realize the switching between different test units;

[0017] The test cabinet (12) is configured to place test instruments, including a vector network analyzer, a motion controller, a main control computer, a terminal comprehensive tester, a target simulator, a spectrum analyzer, and a radar echo generator;

[0018] The module under test (13) includes a vehicle-mounted communication module, a millimeter-wave radar module, a navigation and positioning module, an antenna, or a vehicle-mounted multi-functional integrated module. The module under test is moved to different test units through the turntable and the guide rail for testing.

[0019] Preferably, the antenna radio frequency performance test unit includes a feed antenna (3), a feed support (4), a hybrid flanged reflector (5), and a vector network analyzer; the feed antenna is located at the focus of the hybrid flanged reflector and is used to establish a compact range.

[0020] Preferably, the vehicle-mounted communication module test unit includes a link establishment antenna (8), a high-frequency / low-frequency integrated probe wall (11), a channel emulator, and a communication terminal comprehensive tester / base station simulator.

[0021] Preferably, the high-frequency / low-frequency integrated probe wall (11) of the vehicle-mounted communication module test unit includes a Sub6GHz probe and a millimeter-wave probe, and is configured to realize the stable transmission of broadband signals and the air interface reproduction of low-frequency and millimeter-wave wireless channel models.

[0022] Preferably, the millimeter-wave radar module test unit includes an antenna array (10), a radar echo generator, and a spectrum analyzer.

[0023] Preferably, the antenna array (10) of the millimeter-wave radar module test unit includes multiple groups of antenna arrays and up / down converters, and is configured to receive and transmit millimeter-wave signals in the range of 77 GHz - 81 GHz and perform up / down conversion functions, so as to simulate obstacle targets at different azimuth angles.

[0024] Preferably, the absorbing material (2) is a multi-layer absorbing material structure.

[0025] Preferably, the turntable (6) is made of low-scattering material.

[0026] Preferably, the guide rail (7) is a precision guide rail.

[0027] In addition, the present invention also mentions a multi-parameter comprehensive test method for intelligent networked terminals. This method uses a multi-parameter comprehensive test system for intelligent networked terminals as described above, and specifically includes the following steps:

[0028] Step 1: Install and position the module under test (13) to be tested through the turntable (6);

[0029] Step 2: Move the turntable (6) to different test units through the guide rail (7);

[0030] Step 3: In the antenna radio frequency performance test unit, test the antenna radio frequency performance of the module under test;

[0031] Step 4: In the vehicle-mounted communication module test unit, test the vehicle-mounted communication performance of the module under test;

[0032] Step 5: In the millimeter-wave radar module test unit, test the millimeter-wave radar performance of the module under test;

[0033] Step 6: In the navigation and positioning module test unit, test the navigation and positioning performance of the module under test;

[0034] Step 7: Solve the reflection interference between different test units through the multi-intelligent module integrated test technology based on space-time joint optimization.

[0035] The beneficial technical effects brought by the present invention:

[0036] The present invention can realize the tests of millimeter-wave radar modules, communication modules, navigation and positioning modules, and antenna radio frequency performance, meet the test requirements of composite multi-functional integrated modules, effectively improve the test efficiency of automotive modules, and reduce the test cost. Brief Description of the Drawings

[0037] Figure 1 It is a schematic structural diagram of the system of the present invention;

[0038] Among them, 1 - metal shielding case; 2 - absorbing material; 3 - feed antenna; 4 - feed support; 5 - reflector; 6 - turntable; 7 - guide rail; 8 - absorbing screen; 9 - link - building antenna; 10 - antenna array; 11 - high - frequency / low - frequency integrated probe wall; 12 - test cabinet; 13 - module under test. Detailed implementation manners

[0039] The present invention will be further described in detail below in conjunction with the drawings and specific implementation manners:

[0040] The present invention adopts a multi - functional integrated and modular integrated mode to realize the integrated test of multiple modules of an automobile. There are a total of four test units inside the anechoic chamber. The left side is the antenna radio frequency performance test unit, and the right side includes the millimeter - wave radar module test unit, the vehicle - mounted communication module test unit, and the navigation and positioning module test unit. The switching between different functional units is realized through the shared guide rail. The overall structure is as Figure 1 shown.

[0041] The system of the present invention mainly includes the following parts:

[0042] The metal shielding case 1 is used to block external electromagnetic interference and prevent internal electromagnetic waves from leaking;

[0043] The absorbing material 2 is used to absorb the reflected electromagnetic waves, reduce the interference of the reflected waves, and simulate the free - space propagation conditions;

[0044] The feed antenna 3 is used to transmit and receive electromagnetic waves, radiate the electromagnetic waves into free space, or receive the electromagnetic waves reflected by the reflector;

[0045] The feed support 4 is used for the installation and positioning of the feed antenna, and has front - to - back, left - to - right translation axes and a polarization rotation axis;

[0046] The hybrid - rolled - edge reflector 5 converts the spherical wave emitted by the feed at the focus into a plane wave to simulate the far - field test environment;

[0047] The turntable 6 is a multi - axis mechanical movement device, including azimuth axis, polarization axis, elevation axis, etc. It is equipped with corresponding tooling to realize the installation and positioning of the module under test. It uses low - scattering materials to reduce the interference of the turntable scattering on the test;

[0048] The guide rail 7 realizes the switching between different test units;

[0049] The absorbing screen 8 absorbs the scattered clutter inside, reduces the interference between different test units, and has a hole in the middle to facilitate the turntable and the ground rail to pass through;

[0050] The link - building antenna 9 transmits and receives wireless signals with the module under test to establish a wireless link between the module under test and the test system;

[0051] The antenna array 10 includes multiple groups of antenna arrays and up / down converters, realizing the reception, transmission, up-conversion and down-conversion functions of 77GHz - 81GHz millimeter-wave signals, and achieving the accurate and rapid simulation of obstacle targets at 4 different azimuth angles.

[0052] The high-frequency and low-frequency integrated probe wall 11 realizes the stable transmission of broadband signals and the over-the-air reproduction of low-frequency and millimeter-wave wireless channel models through Sub 6GHz probes and millimeter-wave probes on the wall, covering the main frequency bands of mobile communication.

[0053] The test cabinet 12 houses test instruments, including vector network analyzers, motion controllers, main control computers, terminal comprehensive testers, target simulators, spectrum analyzers, radar echo generators, etc.

[0054] The device under test 13, such as vehicle-mounted communication modules, millimeter-wave radar modules, navigation and positioning modules, antennas, or vehicle-mounted multi-functional integrated modules, is moved to different test units for testing through a turntable and a ground rail.

[0055] The present invention realizes four different test function units in a single anechoic chamber through multi-functional integrated design and optimization of multi-reflector electromagnetic propagation modeling. The working principle of the device: The antenna radio frequency performance test unit is composed of a single-reflector compact range, mainly including a hybrid flanged reflector, a feed antenna, etc. The feed, the antenna under test, and the frequency conversion module are connected and then connected to a vector network analyzer to generate and analyze signals, achieving the efficient and accurate measurement requirements of core indicators such as active and passive of multi-band antennas and radio frequency units. In addition to realizing the test of navigation-related indicators, the link-up antenna will also be combined with the probe wall to realize the test of communication indicators. The link-up antenna and the probe wall are placed on the right side. The vehicle-mounted communication module test unit adopts the technical route of a communication terminal comprehensive tester / base station simulator + channel emulator + probe wall, and cooperates with a multi-channel channel emulator and peripheral links to achieve the broadband over-the-air reproduction of high and low-frequency wireless channels. The millimeter-wave radar module test unit adopts the test scheme of a radar echo generator + spectrum analyzer + antenna array, and simultaneously has the functions of echo positioning accuracy, anti-interference performance, and radio frequency performance testing. The navigation and positioning module test unit adopts the test scheme of a vector signal source + satellite positioning module test component based on a mature standard vector source platform, with the ability to simulate different multi-satellite conditions and different system signals, realizing the accurate test functions of indicators such as the receiving sensitivity and first positioning time of the navigation and positioning module. The device under test is moved to the corresponding position for testing through a guide rail. To reduce the reflection interference between the devices of each function unit, an absorptive screen is added inside the anechoic chamber, and through the integrated test technology of multi-intelligent modules based on spatio-temporal joint optimization, the reflection interference between different devices is solved, and the compatibility between each test unit is achieved.

[0056] The present invention has the ability of multi-functional comprehensive testing for automotive modules, efficiently integrates multiple testing units, realizes the compatibility between each testing unit through multi-functional integrated design, meets the requirements of four fields including vehicle-mounted communication, millimeter-wave radar, navigation and positioning, and antenna radio frequency performance, and realizes the integrated testing of multiple modules.

[0057] The key points of the present invention are as follows:

[0058] Adopt a strategy of multi-functional comprehensive and modular integration to realize four different testing function units in a dark box;

[0059] Adopt an integrated testing technology for multi-intelligent modules based on spatio-temporal joint optimization. By performing inverse windowing processing on the windowed overlapping filtering algorithm, adding differential constraints to the power inversion processing algorithm, optimizing the correlation matrix and variable step-size iteration, solve the reflection interference between different devices, and realize the compatibility between each testing unit;

[0060] Adopt the development of low-frequency multi-probe wall and the overall system structure design to solve the problem of difficult simulation of the air interface wireless environment under the conditions of multi-mode and multi-frequency of vehicle-mounted communication modules.

[0061] The protected points of the present invention are as follows:

[0062] Based on the integrated testing dark box, adopt a strategy of multi-functional comprehensive and modular integration, and include four different testing function units of millimeter-wave radar module, communication module, navigation and positioning module, and antenna radio frequency performance in a dark box;

[0063] Adopt an integrated testing technology for multi-intelligent modules based on spatio-temporal joint optimization. By performing inverse windowing processing on the windowed overlapping filtering algorithm, adding differential constraints to the power inversion processing algorithm, optimizing the correlation matrix and variable step-size iteration, solve the reflection interference between different devices, and realize the compatibility between each testing unit.

[0064] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by those skilled in the art within the essence of the present invention should also fall within the protection scope of the present invention.

Claims

1. An intelligent networked terminal multi-parameter comprehensive test system, characterized in that Comprising: A metal shielding case (1), configured to block external electromagnetic interference and prevent internal electromagnetic waves from leaking; Multiple wave-absorbing materials (2), configured to absorb reflected electromagnetic waves, reduce reflected wave interference, and simulate free space propagation conditions; An integrated test anechoic chamber, which integrates four test units inside: An antenna radio frequency performance test unit, configured to test the radio frequency performance of an antenna; A vehicle-mounted communication module test unit, configured to test the performance of a vehicle-mounted communication module; A millimeter-wave radar module test unit, configured to test the performance of a millimeter-wave radar module; A navigation and positioning module test unit, configured to test the performance of a navigation and positioning module, and the navigation and positioning module test unit includes a link establishment antenna, a vector signal source, and a satellite positioning module test component; A turntable (6), configured to install and position the module under test and having multi-axis mechanical movement capabilities, including an azimuth axis, a polarization axis, and an elevation axis; A guide rail (7), which is used to switch between different test units; A test cabinet (12), configured to place test instruments, including a vector network analyzer, a motion controller, a main control computer, a terminal comprehensive tester, a target simulator, a spectrum analyzer, and a radar echo generator; The module under test (13), including a vehicle-mounted communication module, a millimeter-wave radar module, a navigation and positioning module, an antenna, or a vehicle-mounted multi-functional integrated module, and the module under test is moved to different test units through the turntable and the guide rail for testing.

2. The intelligent network-connected terminal multi-parameter comprehensive test system according to claim 1, characterized in that The antenna radio frequency performance test unit includes a feed antenna (3), a feed support (4), a hybrid flanged reflector (5), and a vector network analyzer; the feed antenna is located at the focus of the hybrid flanged reflector and is used to establish a compact field.

3. The intelligent network-connected terminal multi-parameter comprehensive test system according to claim 1, characterized in that, The vehicle-mounted communication module test unit includes a link establishment antenna (8), a high-frequency / low-frequency integrated probe wall (11), a channel emulator, and a communication terminal comprehensive tester / base station simulator.

4. The intelligent networked terminal multi-parameter comprehensive test system according to claim 3, wherein, The high-frequency / low-frequency integrated probe wall (11) of the vehicle-mounted communication module test unit includes Sub 6GHz probes and millimeter-wave probes, and is configured to achieve stable transmission of broadband signals and in-air reproduction of low-frequency and millimeter-wave wireless channel models.

5. The intelligent network-connected terminal multi-parameter comprehensive test system according to claim 1, characterized in that The millimeter-wave radar module test unit includes an antenna array (10), a radar echo generator, and a spectrum analyzer.

6. The intelligent network-connected terminal multi-parameter comprehensive test system according to claim 5, characterized in that, The antenna array (10) of the millimeter-wave radar module test unit includes multiple groups of antenna arrays and up / down converters, and is configured to achieve reception and transmission of 77GHz - 81GHz millimeter-wave signals and up / down conversion functions, and simulate obstacle targets at different azimuth angles.

7. The intelligent network-connected terminal multi-parameter comprehensive test system according to claim 1, characterized in that The wave-absorbing material (2) is a multi-layer wave-absorbing material structure.

8. The intelligent network-connected terminal multi-parameter comprehensive test system according to claim 1, wherein The turntable (6) is made of low-scattering material.

9. The intelligent network-connected terminal multi-parameter comprehensive test system according to claim 1, characterized in that The guide rail (7) is a precision guide rail.

10. An intelligent networked terminal multi-parameter comprehensive testing method, characterized in that, Using an intelligent networked terminal multi-parameter comprehensive test system as described in claim 1, specifically including the following steps: Step 1: Install and position the module under test (13) to be tested through the turntable (6); Step 2: Move the turntable (6) to different test units through the guide rail (7); Step 3: Inside the antenna radio frequency performance test unit, test the radio frequency performance of the module under test; Step 4: Test the vehicle-mounted communication performance of the module under test within the vehicle-mounted communication module test unit; Step 5: Test the millimeter-wave radar performance of the module under test within the millimeter-wave radar module test unit; Step 6: Test the navigation and positioning performance of the module under test within the navigation and positioning module test unit; Step 7: Solve the reflection interference between different test units through the multi-intelligent module integrated test technology based on spatio-temporal joint optimization.

Images