Adjustable millimeter wave radar angle test equipment, system and method

Abstract

The invention discloses an adjustable millimeter wave radar angle test device, system and method. The test equipment comprises a test platform and a test camera obscura matched with the test platform for use, the test platform comprises a supporting platform, a radar fixing tool which is detachably arranged on the supporting platform and is used for fixing a radar to be tested, and a target separation test module which is used for fixing target simulation equipment. The bottom of the test camera obscura is provided with an opening hole, and the radar to be tested and the target simulation device pass through the opening hole and are located in the test camera obscura. The linear guide rail is used for testing the radar angle resolution, the linear guide rail is used as the arc length of the arc, the millimeter wave radar distinguishing angle is calculated, and upgrading of the method and repeated utilization of the testing system are achieved. And the test camera obscura opening and the target separation test module capable of flexibly sliding are utilized to realize automatic positioning of the test distance and angle, so that the test operation is more convenient.

Description

Technical Field

[0001] The present invention relates to the field of millimeter wave radar testing technology, and in particular to an adjustable millimeter wave radar angle testing device, system and method. Background Art

[0002] With the development of intelligent connected vehicle technology, the intelligent and connected functions of automobiles are gradually being commercialized, and autonomous vehicles are also in a critical period of moving from L2+ to L3 and above, which will inevitably be accompanied by the coordinated development of autonomous vehicle environmental perception systems, decision-making systems, and execution systems. As one of the high-precision components for environmental perception of intelligent connected vehicles, millimeter-wave radar uses electromagnetic wave signals to detect the surrounding environment of the vehicle and the accuracy and reliability of information processing, which directly affects the driving safety and driving experience of autonomous vehicles. How to objectively evaluate the reliability of radar target recognition has always been a difficult problem in the field of environmental perception and information processing of intelligent connected vehicles. Summary of the invention

[0003] In view of the technical problems pointed out in the background technology, the purpose of the present invention is to provide an adjustable millimeter-wave radar angle testing device, system and method.

[0004] To achieve the purpose of the present invention, the technical solution provided by the present invention is specifically as follows:

[0005] First aspect

[0006] The present invention provides an adjustable millimeter wave radar angle test device, including a test platform and a test dark box used in conjunction with it;

[0007] The test platform comprises a support platform and a radar fixing tool detachably arranged on the support platform for fixing the radar to be tested and a target separation test module for fixing the target simulation device;

[0008] An opening hole is provided at the bottom of the test dark box, and the radar to be tested and the target simulation device are located in the test dark box through the opening hole;

[0009] The target simulation device can output two targets, and the radar to be tested is arranged facing the two targets.

[0010] Wherein, the target separation test module is a distance resolution test module and / or an angular resolution test module.

[0011] Among them, the distance resolution test module includes a longitudinal linear module and two radar target fixed poles arranged along the length direction of the support platform, and a target simulation device is installed on each of the radar target fixed poles. Through the longitudinal linear module, the two radar target fixed poles can be driven to move along the length direction of the support platform; the angular resolution test module includes a transverse linear module and two radar target fixed poles arranged perpendicular to the length direction of the support platform, and a target simulation device is installed on each of the radar target fixed poles. Through the longitudinal linear module, the two radar target fixed poles can be driven to move laterally along the support platform.

[0012] Among them, the radar fixing tooling is a two-dimensional turntable and / or a radar pole holding tooling, the two-dimensional turntable includes a turntable support detachably mounted on the support platform, a turntable capable of adjusting the horizontal angle and the pitch angle is mounted on the upper end of the turntable support, and the radar to be tested is mounted on the turntable; the radar pole holding tooling includes a first longitudinal rod, the lower end of the first longitudinal rod is detachably mounted on the support platform, and the upper end of the first longitudinal rod is connected to an XYZ-axis adjustable clamping component whose position can be adjusted up and down and is used to install the radar to be tested.

[0013] Among them, it also includes an angle anti-holding rod tooling that can be detachably installed on the support platform, and the angle anti-holding rod tooling includes a linear guide rail arranged along the length direction of the support platform, a sliding mounting seat that is slidably connected to the linear guide rail and can be adjusted in position, and a longitudinal rod installed on the sliding mounting seat, and a target simulation device is installed on the longitudinal rod.

[0014] Among them, it also includes an antenna pole holder tooling that can be detachably installed on the support platform, and the antenna pole holder tooling includes a base plate that can be detachably installed on the support platform and a sixth longitudinal rod connected to the base plate, a radio frequency front end is installed on the sixth longitudinal rod, and the position of the radio frequency front end is adjustable.

[0015] The target simulation device includes a radio frequency front end or a corner reflector, and the distance between the radio frequency front end or the corner reflector and the radar to be tested is adjustable from 1m to 14m.

[0016] Wherein, the test dark box is a spliced ​​length-adjustable structure.

[0017] Second aspect

[0018] The invention provides an adjustable millimeter wave radar angle test system, comprising the adjustable millimeter wave radar test equipment, a target simulation equipment and a radar to be tested.

[0019] The third aspect

[0020] The invention provides an adjustable millimeter wave radar angle testing method, and the method is implemented using the system.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The present invention uses a linear guide rail to test the radar angle resolution, and uses the linear guide rail as the arc length to calculate the millimeter wave radar discrimination angle, thereby realizing the upgrade of the method and the reuse of the test system. In addition, by using the test dark box opening and the target separation test module with flexible sliding position, the automatic positioning of the test distance and angle can be realized, making the test operation more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A first schematic diagram of the overall structure of a device provided by an embodiment of the present invention;

[0024] Figure 2 A second schematic diagram of the overall structure of the device provided by an embodiment of the present invention;

[0025] Figure 3 A schematic diagram of the structure of a test platform provided in an embodiment of the present invention;

[0026] In the figure, a two-dimensional turntable 1, a support platform 2, a linear guide rail 3, a radar pole holding fixture 4, an angle reverse pole holding fixture 5, a distance resolution test module 6, an angle resolution test module 7, and an antenna pole holding fixture 8;

[0027] Figure 4 A schematic diagram of the structure of a radar pole holding tooling provided in an embodiment of the present invention;

[0028] In the figure, a first longitudinal rod 401 and an XYZ axis adjustable clamping member 402;

[0029] Figure 5 A schematic diagram of the structure of a distance resolution test module provided by an embodiment of the present invention;

[0030] In the figure, the second longitudinal rod 601, the third longitudinal rod 602, the first nut block 604, the longitudinal linear module 603, and the first base block 605;

[0031] Figure 6 A schematic diagram of the structure of an angular resolution test module provided by an embodiment of the present invention;

[0032] In the figure, a fourth longitudinal rod 701, a fifth longitudinal rod 702, a transverse linear module 703, a second nut block 704, and a second base block 705;

[0033] Figure 7 A schematic diagram of the structure of an antenna pole fixture provided in an embodiment of the present invention;

[0034] In the figure, the base plate 801, the sixth longitudinal rod 802;

[0035] Figure 8 A schematic diagram of the structure of a test dark box provided by an embodiment of the present invention;

[0036] In the figure, the first end dark box module 9, the middle dark box module 10, the second end dark box module 11, the connecting buckle 12, and the moving wheel 13;

[0037] Fig. 9 A schematic diagram of the bottom structure of a test dark box provided in an embodiment of the present invention;

[0038] In the figure, there is a longitudinal long hole 15, a first transverse hole 14, and a second transverse hole 16. DETAILED DESCRIPTION

[0039] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0040] like Figure 1-Figure 7 As shown, an embodiment of the present invention provides an adjustable millimeter wave radar angle test device, including a test platform and a test dark box used in conjunction with it;

[0041] The test platform includes a support platform 2 and a radar fixing tool detachably arranged on the support platform 2 for fixing the radar to be tested and a target separation test module for fixing the target simulation device;

[0042] An opening hole is provided at the bottom of the test dark box, and the radar to be tested and the target simulation device are located in the test dark box through the opening hole;

[0043] The target simulation device can output two targets, and the radar to be tested is arranged opposite to the two targets. The target separation test module is a distance resolution test module 6 and / or an angle resolution test module 7.

[0044] The distance resolution test module 6 includes a longitudinal linear module and two radar target fixed poles arranged along the length direction of the support platform 2, and a target simulation device is installed on each of the radar target fixed poles. Through the longitudinal linear module, the two radar target fixed poles can be driven to move along the length direction of the support platform 2;

[0045] It should be noted that the longitudinal linear module adopts the driving structure in the prior art, including a servo motor, a lead screw and a lead screw nut, etc. Figure 5As shown, the two radar target fixing poles are respectively the second longitudinal pole 601 and the third longitudinal pole 602, the longitudinal linear module 603 includes two servo motors and a screw drive mechanism, which drive the first nut block 604 to move, the second longitudinal pole 601 and the third longitudinal pole 602 are respectively connected to the two first nut blocks 604, and the longitudinal linear module is installed on the supporting platform through the first base block 605; it will not be described in detail here, and the two radar target fixing poles can be moved separately through this structure, and the target simulation device can adjust the longitudinal position on the radar target fixing pole.

[0046] The angular resolution test module 7 includes a transverse linear module and two radar target fixing poles arranged perpendicular to the length direction of the support platform 2. A target simulation device is installed on each of the radar target fixing poles. Through the longitudinal linear module, the two radar target fixing poles can be driven to move laterally along the support platform 2.

[0047] It should be noted that the horizontal linear module adopts the driving structure in the prior art, including a servo motor, a lead screw and a lead screw nut, etc. Figure 6 As shown, the two radar target fixing poles are respectively the fourth longitudinal pole 701 and the fifth longitudinal pole 702, the transverse linear module 703 includes two servo motors and a screw drive mechanism, which drive the second nut block 704 to move, the fourth longitudinal pole 701 and the fifth longitudinal pole 702 are respectively connected to the two second nut blocks 704, and the transverse linear module is installed on the supporting platform through the second base block 705; it will not be described in detail here, and the two radar target fixing poles can be moved separately through this structure, and the target simulation device can adjust the longitudinal position on the radar target fixing pole.

[0048] Among them, the radar fixing tooling is a two-dimensional turntable 1 and / or a radar pole holding tooling 4, the two-dimensional turntable 1 includes a turntable support detachably mounted on the support platform 2, a turntable capable of adjusting the horizontal angle and the pitch angle is mounted on the upper end of the turntable support, and the radar to be tested is mounted on the turntable; the radar pole holding tooling 4 includes a first longitudinal rod 401, the lower end of the first longitudinal rod 401 is detachably mounted on the support platform 2, and the upper end is connected to an XYZ-axis adjustable clamping component 402 whose position can be adjusted up and down and is used to install the radar to be tested.

[0049] It should be noted that the two-dimensional turntable 1 can be used for testing in most scenarios, and the radar pole fixture 4 can be used for some simple testing; in addition, the XYZ-axis adjustable clamping component 402 adopts a structure in the well-known technology, including an XYZ-axis adjustable driving mechanism and two clamps that can adjust the XYZ-axis position and the distance between the two.

[0050] Among them, it also includes an angle anti-holding rod tooling 5 that can be detachably installed on the support platform 2, and the angle anti-holding rod tooling 5 includes a linear guide rail 3 arranged along the length direction of the support platform 2, a sliding mounting seat that is slidably connected to the linear guide rail 3 and can be adjusted in position, and a longitudinal rod installed on the sliding mounting seat, and a target simulation device is installed on the longitudinal rod and the height of the target simulation device is adjustable.

[0051] Among them, it also includes an antenna pole holder tool 8 that can be detachably installed on the support platform 2, and the antenna pole holder tool 8 includes a base plate 801 that can be detachably installed on the support platform 2 and a sixth longitudinal rod 802 connected to the base plate 801, and a radio frequency front end is installed on the sixth longitudinal rod 802, and the height position of the radio frequency front end is adjustable.

[0052] It should be noted that the target simulation device includes a radio frequency front end or a corner reflector, and the distance between the radio frequency front end or the corner reflector and the radar to be tested is adjustable from 1m to 14m.

[0053] Wherein, the test dark box is a spliced ​​length-adjustable structure.

[0054] Said Figure 8-Figure 9 As shown, it is a schematic diagram of the structure of a test dark box provided in an embodiment of the present invention; the test dark box includes a first end dark box module 9, a plurality of intermediate dark box modules 10 and a second end dark box module 11 which are detachably connected, and any two adjacent dark box modules are detachably connected via a connecting buckle 12; the first end dark box module 9, the plurality of intermediate dark box modules 10 and the second end dark box module 11 constitute a closed cavity structure, and all walls of the closed cavity structure are provided with absorbing cotton.

[0055] It should be noted that the number of the plurality of intermediate dark box modules 10 is set as required, so that the length of the test dark box can be adjusted.

[0056] The lower end of the sealed cavity structure is provided with a longitudinal long hole 15 arranged along the length direction, and a first transverse hole 14 and a second transverse hole 16 perpendicularly intersecting the longitudinal long hole 15. The radar to be tested and the target simulation device extend into the sealed cavity structure through the longitudinal long hole 15, the first transverse hole 14 and the second transverse hole 16.

[0057] In addition, the lower ends of the first end dark box module 9, the plurality of middle dark box modules 10 and the second end dark box module 11 are all provided with moving wheels 13 with brake mechanisms for easy movement.

[0058] It should be noted that the connecting buckle 12 is an outsourced component and adopts a well-known structure.

[0059] It should be noted that the device also includes a controller that can control the electronic components in the device.

[0060] In addition, an adjustable millimeter-wave radar angle test system includes the adjustable millimeter-wave radar test device, a target simulation device and a radar to be tested.

[0061] In addition, an adjustable millimeter-wave radar angle testing method is provided, and the method is implemented using the system.

[0062] The radar to be tested can be slidably fixed on the longitudinal guide rail or fixed on the two-dimensional turntable through the radar holding pole fixture;

[0063] A RF front end or corner reflector (target object) is fixed on each of the two radar target fixing poles of the target separation test module (either one is fine, just the installation direction is different);

[0064] The RF front end or corner reflector is located directly above the longitudinal opening and is directly opposite to the radar to be tested; (the two-dimensional turntable can be used at multiple times. When the radar does not need to rotate, the radar pole fixture can be used) the two-dimensional turntable can be adjusted horizontally and in pitch.

[0065] The controller controls the longitudinal movement of the radar to be tested and the RF front end or the corner reflector to locate the distance between the radar to be tested and the RF front end / corner reflector;

[0066] Start the radar to be tested and the millimeter-wave radar target simulator (the corner reflector is a metal part and does not need to be powered on);

[0067] The distance between the RF front end or corner reflector and the radar to be tested is adjustable from 1m to 14m.

[0068] The optional implementation modes of the embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the embodiments of the present invention are not limited to the specific details in the above implementation modes. Within the technical concept of the embodiments of the present invention, various simple modifications can be made to the technical scheme of the embodiments of the present invention, and these simple modifications all belong to the protection scope of the embodiments of the present invention.

Claims

1. An adjustable millimeter wave radar angle test device, characterized in that: It includes a test platform and a test dark box used in conjunction with it; The test platform comprises a support platform (2) and a detachable device arranged on the support platform (2) for fixing Radar fixture for the radar to be tested and target separation test module for fixing target simulation equipment; The bottom of the test dark box is provided with an opening hole, and the radar to be tested and the target simulation device are located in the test dark box through the opening hole; The target simulation device can output two targets, and the radar to be tested is arranged facing the two targets.

2. The adjustable millimeter wave radar angle test equipment according to claim 1, characterized in that: The target separation test module is a distance resolution test module (6) and / or an angular resolution test module (7).

3. The adjustable millimeter wave radar angle test equipment according to claim 2, characterized in that: The distance resolution test module (6) comprises a longitudinal linear module and two radar target fixed poles arranged along the length direction of the support platform (2), each of the radar target fixed poles being equipped with a target simulation device, and the longitudinal linear module can drive the two radar target fixed poles to move along the length direction of the support platform (2); the angular resolution test module (7) comprises a transverse linear module and two radar target fixed poles arranged perpendicular to the length direction of the support platform (2), each of the radar target fixed poles being equipped with a target simulation device, and the longitudinal linear module can drive the two radar target fixed poles to move transversely along the support platform (2).

4. The adjustable millimeter wave radar angle test equipment according to claim 1, characterized in that: The radar fixing tooling is a two-dimensional turntable (1) and / or a radar pole holding tooling (4), wherein the two-dimensional turntable (1) comprises a turntable support detachably mounted on the support platform (2), a turntable capable of adjusting the horizontal angle and the pitch angle is mounted on the upper end of the turntable support, and the radar to be tested is mounted on the turntable; the radar pole holding tooling (4) comprises a first longitudinal rod (401), the lower end of the first longitudinal rod (401) is detachably mounted on the support platform (2), and the upper end of the first longitudinal rod (401) is connected to an XYZ axis adjustable clamping component (402) whose position can be adjusted up and down and is used to mount the radar to be tested.

5. The adjustable millimeter wave radar angle test equipment according to claim 1, characterized in that: It also includes an angle reverse arm holding fixture (5) detachably mounted on the support platform (2), the angle reverse arm holding fixture (5) including a linear guide rail (3) arranged along the length direction of the support platform (2), a sliding mounting seat slidably connected to the linear guide rail (3) and adjustable in position, and a longitudinal rod mounted on the sliding mounting seat, wherein the target simulation device is mounted on the longitudinal rod.

6. The adjustable millimeter wave radar angle test equipment according to claim 1, characterized in that: It also includes an antenna pole fixture (8) that is detachably mounted on the support platform (2), the antenna pole fixture (8) comprising a base plate (801) that is detachably mounted on the support platform (2) and a sixth longitudinal rod (802) connected to the base plate (801), a radio frequency front end being mounted on the sixth longitudinal rod (802), and the position of the radio frequency front end being adjustable.

7. The adjustable millimeter wave radar angle test equipment according to claim 1, characterized in that: The target simulation device includes a radio frequency front end or a corner reflector, and the distance between the radio frequency front end or the corner reflector and the radar to be tested is adjustable from 1m to 14m.

8. The adjustable millimeter wave radar angle test equipment according to claim 7, characterized in that: The test dark box is a spliced ​​length-adjustable structure.

9. An adjustable millimeter wave radar angle test system, characterized in that: The invention comprises the adjustable millimeter wave radar test equipment, the target simulation equipment and the radar to be tested as described in any one of claims 1 to 8.

10. An adjustable millimeter wave radar angle test method, characterized in that: The method is implemented using the system according to claim 9.

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