Millimeter wave radar testing device

Abstract

The utility model provides a millimeter wave radar testing device which comprises a darkroom, a radar target simulator and an upper computer, the inner wall of the darkroom is provided with a wave absorbing material, a radar support and an arc-shaped sliding rail are arranged in the darkroom, and a millimeter wave radar is installed on the radar support through a servo motor and is driven by the servo motor. The millimeter-wave radar can rotate in a plane perpendicular to the horizontal plane, the radar target simulator is used for generating a virtual radar target, a port of the radar target simulator outputs the virtual radar target, an opening of the arc-shaped sliding rail faces the millimeter-wave radar, and the arc-shaped sliding rail is provided with a vertical rod, a driving unit and the port of the radar target simulator. The radar target simulator port is installed at the upper end of the vertical rod, the driving unit is used for driving the vertical rod to move on the arc-shaped sliding rail, the upper computer is used for controlling the servo motor and the driving unit, and the upper computer is further used for testing the millimeter-wave radar according to echo signals, received by the millimeter-wave radar, of a virtual radar target in each sampling period.

Description

Technical Field

[0001] The utility model relates to the technical field of radar, in particular to a millimeter wave radar testing device. Background Art

[0002] With the development and popularization of autonomous vehicles, they are becoming increasingly intelligent and widely used. Both assisted and autonomous driving functions require various on-board radars for detection and perception to achieve these functions. Therefore, to ensure safe driving, precise measurement of various millimeter-wave radar performance is necessary.

[0003] Currently, precise measurement of millimeter-wave radar performance requires mounting the radar on a rotating gantry in a darkroom and adjusting its horizontal and elevation fields of view to test its performance at various angles. Furthermore, repeated adjustments to the front-to-back position of the diagonal reflector, often using slide rails, are often required, resulting in high testing costs and low efficiency. Utility Model Content

[0004] The present utility model is completed in order to solve the above-mentioned problems. Its purpose is to provide a millimeter-wave radar testing device that can test the performance of the millimeter-wave radar at various horizontal and elevation angles without adjusting the horizontal and elevation angles of the millimeter-wave radar, thereby simplifying the testing steps and improving the testing efficiency.

[0005] According to one aspect of the present utility model, a millimeter-wave radar testing device is provided, characterized in that it includes a darkroom, a radar target simulator and a host computer, the inner wall of the darkroom is provided with an absorbing material, and the darkroom is provided with a radar bracket and an arc-shaped slide rail, the millimeter-wave radar is installed on the radar bracket via a servo motor, and the servo motor drives the millimeter-wave radar to rotate in a plane perpendicular to the horizontal plane, the radar target simulator is used to generate a virtual radar target, and the radar target simulator port outputs the virtual radar target, the opening of the arc-shaped slide rail faces the millimeter-wave radar, a vertical pole, a drive unit and the radar target simulator port are installed on the arc-shaped slide rail, the radar target simulator port is installed at the upper end of the vertical pole, the drive unit is used to drive the vertical pole to move on the arc-shaped slide rail, the host computer is used to control the servo motor and the drive unit, and the host computer is also used to test the millimeter-wave radar according to the echo signal of the virtual radar target received by the millimeter-wave radar in each sampling period.

[0006] Preferably, the host computer can control the servo motor so that the millimeter wave radar rotates clockwise or counterclockwise by a preset angle in a plane perpendicular to the horizontal plane.

[0007] Preferably, the radar target simulator can generate static virtual radar targets defined at different distances.

[0008] Preferably, a wall is further provided in the darkroom, the wall being erected toward the millimeter-wave radar and being further away from the millimeter-wave radar than the arc-shaped slide rail, and a surface of the wall facing the millimeter-wave radar is provided with an absorbing material.

[0009] Preferably, the wall is arranged close to the arc-shaped slide rail.

[0010] Preferably, the wall is arranged to be higher than the radar target simulator port, and its width is close to the width of the arc-shaped slide rail.

[0011] Preferably, a surface of the vertical pole facing the millimeter wave radar is provided with an absorbing material.

[0012] Preferably, a plurality of the arc-shaped slide rails are provided, and a plurality of upright poles, a plurality of drive units and a plurality of radar target simulator ports are provided correspondingly.

[0013] Preferably, the plurality of arc-shaped slide rails are spaced apart by a small preset distance.

[0014] Preferably, the darkroom is further provided with a wave-absorbing base, and the radar bracket is installed on the wave-absorbing base.

[0015] Preferably, the upright poles and the wall are made of wood.

[0016] According to the utility model, the performance of the millimeter-wave radar at various horizontal and elevation angles can be tested without adjusting the horizontal and elevation angles of the millimeter-wave radar, thereby simplifying the test steps and improving the test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of a millimeter-wave radar testing device provided in the first embodiment of the present invention.

[0018] Figure 2 This is another schematic diagram of the millimeter wave radar testing device provided by the first embodiment of the present utility model.

[0019] Figure 3 Schematic diagram of a millimeter-wave radar testing device provided in the second embodiment of the present invention. DETAILED DESCRIPTION

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are intended only to illustrate the relevant utility model and are not intended to limit the scope of the utility model. It should also be noted that, for ease of description, only portions relevant to the relevant utility model are shown in the accompanying drawings.

[0021] The terms used herein are used only to describe specific embodiments and are not intended to limit the present disclosure. As used herein, the singular forms "a," "an," and "the" are also intended to include the plural forms, unless the context clearly indicates otherwise. It will also be understood that when the terms "comprising" and / or "made of" are used in this specification, the presence of the features, wholes, steps, operations, elements, and / or components is specified, but the presence or addition of one or more other features, wholes, steps, operations, elements, components, and / or groups thereof is not excluded.

[0022] The embodiments described herein may be described with reference to plan views and / or cross-sectional views, with the aid of idealized schematic diagrams of the present disclosure. Thus, the example illustrations may be modified based on manufacturing techniques and / or tolerances. Therefore, the embodiments are not limited to the embodiments shown in the accompanying drawings, but include modifications of the configurations formed based on the manufacturing process. Therefore, the regions illustrated in the accompanying drawings are schematic in nature, and the shapes of the regions shown in the drawings illustrate specific shapes of the regions of the elements, but are not intended to be limiting.

[0023] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art. It will also be understood that terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant art and the present disclosure, and will not be interpreted as having an idealized or overly formal meaning unless expressly defined as such herein.

[0024] Figure 1 1 is a schematic diagram of a millimeter wave radar testing device 100 provided in the first embodiment of the present invention. Figure 2 This is another schematic diagram of the millimeter wave radar test device 100 provided by the first embodiment of the present invention. Figure 1 and Figure 2 The millimeter wave radar testing device 100 provided by the present invention is described. Figure 1As shown, the millimeter-wave radar test device 100 provided by the present invention includes: a darkroom 110, a radar target simulator 150, and a host computer 160. The inner wall of the darkroom 110 is provided with an absorbing material 111. Specifically, the side walls and the top of the darkroom 110 are provided with absorbing materials. These absorbing materials effectively absorb the electromagnetic waves emitted by the millimeter-wave radar, reduce reflections and multipath effects, and are used to prevent metal objects other than reflective targets from reflecting radar waves on the test device or test area, that is, to prevent metal objects from interfering with the test, thereby providing a more accurate test environment. In addition, a radar bracket 120 and an arc-shaped slide rail 130 are provided in the darkroom 110.

[0025] The millimeter-wave radar 200 is mounted on the radar bracket 120 via a servo motor 121. Driven by the servo motor 121, the millimeter-wave radar 200 can rotate within a plane perpendicular to the horizontal plane. The host computer 160 is electrically connected to the servo motor 121 and can control the servo motor 121 to rotate the millimeter-wave radar 200 clockwise or counterclockwise within the plane perpendicular to the horizontal plane by a preset angle, which can be, for example, 90 degrees. In some embodiments, the darkroom 110 is further provided with an absorbing base 125, upon which the radar bracket 120 is mounted. The absorbing base 125 absorbs electromagnetic waves emitted by the millimeter-wave radar in the area surrounding the radar bracket 120, reducing reflections and multipath effects.

[0026] The radar target simulator 150 is used to generate virtual radar targets, which are output via the radar target simulator port 151. The radar target simulator 150 can generate static virtual radar targets defined at different distances. For example, the radar target simulator 150 can generate static virtual radar targets within a 300m range. Using the radar target simulator to generate static virtual radar targets within a specific range eliminates the need for a large darkroom for millimeter-wave radar performance testing and eliminates the need for manual adjustment of the distance between the reflective target and the millimeter-wave radar, significantly reducing both equipment and labor costs for millimeter-wave radar testing.

[0027] The opening of the arc-shaped slide rail 130 faces the millimeter wave radar 200. Figure 2As shown, the curved rail 130 is mounted with a pole 131, a drive unit 132, and a radar target simulator port 151. The radar target simulator port 151 is mounted at the upper end of the pole. The drive unit 132 is used to drive the pole 131 along the curved rail 130. A host computer 160 is electrically connected to the drive unit 132 to control the drive unit 132, thereby controlling the movement of the pole 131 along the curved rail 130. The angle α formed by the line OA connecting the center O of the millimeter-wave radar 200 to one end A of the curved rail 130 and the line OB connecting the center O of the millimeter-wave radar 200 to the other end B of the curved rail 130 is greater than or equal to the field of view of the millimeter-wave radar 200. To further reduce reflections and multipath effects and provide a more precise testing environment, in some embodiments, an absorbing material 1311 is provided on the surface of the pole 131 facing the millimeter-wave radar 200. Furthermore, the pole 131 is made of wood.

[0028] The host computer 160 is further configured to test the millimeter wave radar 200 in each sampling period according to an echo signal reflected from a virtual radar target outputted by the radar target simulator port 151 and received by the millimeter wave radar 200 .

[0029] In some embodiments, a wall 140 is further provided within the darkroom 110. The wall 140 is erected toward the millimeter-wave radar 200 and is further away from the millimeter-wave radar 200 than the curved slide 130. The surface of the wall 140 facing the millimeter-wave radar 200 is provided with an absorbing material 141. This allows the testing accuracy of the millimeter-wave radar 200 to be unaffected even if other devices are located behind the wall 140. For example, the host computer 160 and the radar target simulator 150 can be located behind the wall 140. This allows convenient electrical connection between the host computer 160 and the servo motor 121, the millimeter-wave radar 200, and the drive unit 132, and convenient electrical connection between the radar target simulator 150 and the radar target simulator port 151. The wall 140 is positioned near the curved slide 130, is higher than the radar target simulator port 151, and has a width close to the width of the curved slide 130. Furthermore, the wall 140 is made of wood.

[0030] According to the millimeter-wave radar testing device 100 provided in this embodiment, by controlling the position of the radar target simulator port 151 on the curved rail 130, it is possible to test and calibrate the millimeter-wave radar 200 at different horizontal field of view angles. After completing all horizontal field of view angle tests and calibrations, by controlling the servo motor to rotate the millimeter-wave radar 200 90 degrees clockwise or counterclockwise in a plane perpendicular to the horizontal plane, and then retesting the various positions of the radar target simulator port 151 on the curved rail 130, it is possible to test and calibrate the millimeter-wave radar 200 at different elevation field of view angles. Therefore, it is possible to test and calibrate at different field of view angles without having to set up a high-precision rotating gantry to adjust the horizontal and vertical rotation angles of the millimeter-wave radar.

[0031] Figure 3 FIG. 3 is a schematic diagram of a millimeter-wave radar testing device 300 provided in a second embodiment of the present invention.

[0032] like Figure 3 As shown, two curved rails 130 and 135 can be provided, and correspondingly, two upright poles 131 and 136, two drive units 132 and 137, and two radar target simulator ports 151 and 152 can be provided. The two curved rails 130 and 135 are separated by a small preset distance. Of course, the number here is not limited to two; more curved rails can be provided, and correspondingly, more upright poles, drive units, and radar target simulator ports can be provided. The millimeter-wave radar test device 300 provided in the second embodiment can achieve multi-target millimeter-wave radar testing.

[0033] Those skilled in the art should be able to appreciate that the modules, units, and method steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. In order to clearly illustrate the interchangeability of electronic hardware and software, the above description has generally described the components and steps of each example according to their functions. Whether these functions are performed in electronic hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art may implement the described functions in different ways for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0034] Although the present invention has been described with reference to the present specific embodiments, persons skilled in the art should recognize that the scope of the present invention is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but also includes other technical solutions formed by any combination of the above-mentioned technical features or their equivalents without departing from the concept of the present invention. For example, the above-mentioned features may be replaced with (but not limited to) technical features with similar functions disclosed in the present invention.

Claims

1. A millimeter wave radar test device, characterized in that: Including darkroom, radar target simulator and host computer, The inner wall of the darkroom is provided with an absorbing material, and the darkroom is provided with a radar bracket and an arc-shaped slide rail. The millimeter-wave radar is mounted on the radar bracket via a servo motor, and driven by the servo motor, the millimeter-wave radar can be rotated in a plane perpendicular to the horizontal plane. The radar target simulator is used to generate a virtual radar target, and the radar target simulator port outputs the virtual radar target. The opening of the arc-shaped slide rail faces the millimeter-wave radar. A vertical pole, a driving unit, and the radar target simulator port are installed on the arc-shaped slide rail. The radar target simulator port is installed on the upper end of the vertical pole. The driving unit is used to drive the vertical pole to move on the arc-shaped slide rail. The host computer is used to control the servo motor and the drive unit. The host computer is further configured to test the millimeter wave radar according to the echo signal of the virtual radar target received by the millimeter wave radar in each sampling period.

2. The millimeter wave radar testing device according to claim 1, wherein: The host computer can control the servo motor so that the millimeter wave radar rotates clockwise or counterclockwise by a preset angle in a plane perpendicular to the horizontal plane.

3. The millimeter wave radar testing device according to claim 1 or 2, characterized in that: The radar target simulator can generate static virtual radar targets defined at different distances.

4. The millimeter wave radar testing device according to claim 1 or 2, characterized in that: The darkroom is further provided with a wall, which is erected toward the millimeter-wave radar and is further away from the millimeter-wave radar than the arc-shaped slide rail. The surface of the wall facing the millimeter-wave radar is provided with an absorbing material.

5. The millimeter wave radar testing device according to claim 4, wherein: The wall is arranged close to the arc-shaped slide rail.

6. The millimeter wave radar testing device according to claim 4, wherein: The wall is arranged to be higher than the port of the radar target simulator, and has a width close to that of the arc-shaped slide rail.

7. The millimeter wave radar testing device according to claim 1 or 2, characterized in that: The surface of the vertical pole facing the millimeter wave radar is provided with wave absorbing material.

8. The millimeter wave radar testing device according to claim 1 or 2, characterized in that: A plurality of the arc-shaped slide rails are provided, and a plurality of upright poles, a plurality of drive units and a plurality of radar target simulator ports are provided correspondingly.

9. The millimeter wave radar testing device according to claim 8, characterized in that: The plurality of arc-shaped slide rails are spaced apart by a relatively small preset distance.

10. The millimeter wave radar testing device according to claim 1 or 2, characterized in that: The darkroom is further provided with a wave-absorbing base, and the radar bracket is installed on the wave-absorbing base.

11. The millimeter wave radar testing device according to claim 4, wherein: The vertical poles and the wall are made of wood.

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