Millimeter wave radar performance test system
By designing a millimeter-wave radar performance testing system that includes a radar target simulation device, a temperature control chamber, and a rotating platform, the laboratory challenges of radar performance testing under extreme temperatures were solved, achieving efficient and accurate performance evaluation while reducing costs.
Patent Information
- Application Number
- CN202422996972.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-04
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2034-12-04
AI Technical Summary
Existing technologies cannot conduct millimeter-wave radar performance tests in extremely cold or high-temperature environments in the laboratory, which limits the convenience and reliability of radar performance evaluation.
A millimeter-wave radar performance testing system was designed, comprising a radar target simulation device, a temperature control chamber, a rotating table, and a control device. The rotating table and temperature control chamber simulate extreme temperature environments, and the radar target simulation device generates virtual targets to achieve accurate performance testing.
It enables performance testing of millimeter-wave radar in extremely cold or high-temperature environments under laboratory conditions, reducing equipment and labor costs, providing a precise testing environment, and improving testing efficiency and reliability.
Smart Images
Figure CN223692523U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to radar technical field especially relates to a millimeter wave radar performance test system. BACKGROUND
[0002] With the development and popularization of autonomous vehicles, autonomous vehicles are becoming increasingly intelligent and widely applied. Whether it is an assisted driving function or an autonomous driving function, various vehicle-mounted radars are needed for detection and perception to realize various functions of assisted driving or autonomous driving. Therefore, in order to ensure safe driving, the performance of millimeter wave radars needs to be accurately measured.
[0003] Therefore, millimeter wave radars not only need to be tested for performance under normal temperatures, but also need to be tested for performance under high-temperature and low-temperature environments. These tests not only evaluate the working ability of millimeter wave radars under extreme temperature conditions, but also ensure their reliability in various application scenarios. Through systematic high-temperature and low-temperature testing, important data support can be provided for the design and application of millimeter wave radars, thereby improving their safety and effectiveness in actual use.
[0004] However, at present, testing under extreme temperature conditions, especially evaluating radar detection performance in extremely cold or extremely high-temperature environments, can only be carried out at specific times and places and cannot be carried out in a laboratory. This is a great limitation for the performance testing of millimeter wave radars, which obviously brings great inconvenience. UTILITY MODEL CONTENTS
[0005] The utility model is completed in order to solve the above problem, its purpose lies in providing a kind of millimeter wave radar performance test system, can realize millimeter wave radar performance test under extremely cold or extremely high-temperature environment in laboratory environment.
[0006] According to one aspect of the utility model, a millimeter wave radar performance test system is provided, comprising: a radar target simulation device, a temperature control box, a rotating rack and a control device;The rotating rack includes a driving unit, which drives the rotating rack to rotate according to the control signal from the control device;The temperature control box is located on the rotating rack and can rotate with the rotating rack, and the temperature control box has an opening;The millimeter wave radar to be tested is installed in the temperature control box and located at the opening;The radar target simulation device is installed outside the temperature control box, and the port of the radar target simulation device is located in the detection area of the millimeter wave radar to be tested;The control device sends control signals to the rotating rack, and obtains the performance test result of the millimeter wave radar to be tested according to the detection result information of the millimeter wave radar to be tested.
[0007] Preferably, the millimeter wave radar performance test system further comprises a first plate body, the first plate body comprises a window for exposing the port of the radar target simulation device, and a surface of the first plate body facing the rotating turntable is covered with a first wave-absorbing material.
[0008] Preferably, the first plate body comprises a first plate body central part, a first plate body left side part and a first plate body right side part, the window is located in the first plate body central part, the first plate body left side part is located on the left side of the first plate body central part and forms an angle greater than 90 degrees and less than 180 degrees with the first plate body central part, and the first plate body right side part is located on the right side of the first plate body central part and forms an angle greater than 90 degrees and less than 180 degrees with the first plate body central part.
[0009] Preferably, the first plate body central part is arranged such that, when the millimeter wave radar to be tested is directly opposite the port of the radar target simulation device, a line connecting the millimeter wave radar to be tested and the port of the radar target simulation device is perpendicular to the first plate body central part.
[0010] Preferably, the millimeter wave radar performance test system further comprises a second plate body, the second plate body is closer to the rotating turntable than the first plate body, a surface of the second plate body facing the rotating turntable is covered with a second wave-absorbing material, and the second plate body has a passage for allowing electromagnetic waves of the millimeter wave radar to be tested to pass through.
[0011] Preferably, the second plate body comprises a second plate body left side part and a second plate body right side part, the second plate body left side part and the second plate body right side part are separated by a preset distance, thereby forming the passage for allowing electromagnetic waves of the millimeter wave radar to be tested to pass through.
[0012] Preferably, the second plate body left side part is arranged to be parallel to the first plate body left side part, and the second plate body right side part is arranged to be parallel to the first plate body right side part.
[0013] Preferably, a distance between the second plate body and the rotating turntable is less than a distance between the second plate body and the first plate body.
[0014] Preferably, a third wave-absorbing material is laid horizontally in a position lower than the millimeter wave radar to be tested between the rotating turntable and the port of the radar target simulation device.
[0015] Preferably, the third wave-absorbing material is arranged only in an area directly in front of the rotating turntable. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 is a schematic diagram of a millimeter wave radar performance test system provided by an embodiment of the present application.
[0017] Figure 2is another schematic view of the millimeter wave radar performance test system provided by the embodiment of the utility model. DETAILED DESCRIPTION
[0018] The utility model will be explained further in detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described here are only used to explain the related utility model, and are not limited to the utility model. In addition, it should be noted that only the parts related to the utility model are shown in the drawings for convenience of description.
[0019] The terms used herein are only used to describe specific embodiments, and are not intended to limit the present disclosure. As used herein, the singular forms "a" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will also be understood that the terms "comprise" and / or "consist of, when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.
[0020] The embodiments described herein can be described with reference to plan views and / or cross-sectional views by virtue of the idealized schematic illustrations of the present disclosure. Thus, the example illustrations are modified according to manufacturing techniques and / or tolerances. Therefore, the embodiments are not limited to the embodiments illustrated in the drawings, but include modifications of configurations formed based on manufacturing processes. Therefore, the regions illustrated in the drawings have a schematic property, and the shapes of the regions shown in the drawings illustrate specific shapes of regions of elements, but are not intended to be limiting.
[0021] 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 be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and the present disclosure, and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
[0022] Figure 1 is a schematic view of a millimeter wave radar performance test system provided by an embodiment of the utility model. Figure 2 is another schematic view of the millimeter wave radar performance test system provided by the embodiment of the utility model. Below, based on Figure 1 and Figure 2 A millimeter wave radar performance test system provided by the utility model is described. As Figure 1As shown, the millimeter wave radar performance test system provided by the utility model includes: a radar target simulation device 130, a temperature control box 110, a rotating rack 120 and a control device 140; the rotating rack 120 includes a driving unit 121, and the driving unit 121 drives the rotating rack 120 to rotate according to the control signal from the control device 140; the temperature control box 110 is located on the rotating rack 120 and can rotate with the rotating rack 120, and the temperature control box has an opening (not shown); the millimeter wave radar 100 to be tested is installed in the temperature control box 110 and is located at the opening, so that the electromagnetic wave emitted by the millimeter wave radar 100 to be tested can be emitted from the opening without obstacles; the radar target simulation device 130 is installed outside the temperature control box 110, and the port 131 of the radar target simulation device is located in the detection area of the millimeter wave radar 100 to be tested; the control device 140 sends a control signal to the rotating rack 120, and obtains the performance test result of the millimeter wave radar 100 to be tested according to the detection result information of the millimeter wave radar 100 to be tested.
[0023] The driving unit 121 is electrically connected with the control device 140, so that the rotating rack 120 can be driven to rotate clockwise or counterclockwise by a certain angle in the horizontal plane according to the control signal from the control device 140. The temperature control box is located on the rotating rack and can rotate with the rotating rack, so that the field of view angle of the millimeter wave radar 100 to be tested can be adjusted within a certain range.
[0024] The radar target simulation device 130 is used for generating a virtual radar target, and the port 131 of the radar target simulation device outputs the radar target. The radar target simulation device 130 can generate static virtual radar targets defined as different distances. By generating static virtual radar targets within a certain distance range by using the radar target simulation device, the performance test of the millimeter wave radar does not need a large darkroom, and the distance between the reflection target and the millimeter wave radar does not need to be adjusted manually, so that the equipment cost and the labor cost of the millimeter wave radar test are greatly reduced.
[0025] The temperature control box 110 can maintain a certain temperature environment in the inside, and is used for providing a temperature environment required for the test of the millimeter wave radar 100 to be tested.
[0026] In some embodiments, when the horizontal field of view angle of the millimeter wave radar 100 to be tested is zero (the pitch field of view angle of the millimeter wave radar performance test system of the application cannot be adjusted), the emission center of the millimeter wave radar 100 to be tested is in an alignment state with the port 131 of the radar target simulation device.
[0027] In some embodiments, the millimeter wave radar performance testing system of the present application further comprises a first plate body 150, the first plate body 150 comprises a window 154 for exposing the port 131 of the radar target simulation device, and the surface of the first plate body 150 facing the rotating platform 120 is covered with a first wave-absorbing material 155. The first wave-absorbing material 155 effectively absorbs the electromagnetic waves emitted by the millimeter wave radar, reduces reflection and multipath effects, and prevents metal objects other than the reflection target from reflecting radar waves in the test device or test area, i.e. prevents metal objects from interfering with the test, thereby providing a more accurate test environment.
[0028] In some embodiments, the first plate body 150 comprises a first plate body central portion 151, a first plate body left side portion 152, and a first plate body right side portion 153. The window 154 is located in the first plate body central portion 151. The first plate body left side portion 152 is located on the left side of the first plate body central portion 151 and forms an angle greater than 90 degrees and less than 180 degrees with the first plate body central portion 151. The first plate body right side portion 153 is located on the right side of the first plate body central portion 151 and forms an angle greater than 90 degrees and less than 180 degrees with the first plate body central portion 151. The angle can be set according to actual needs, and the present application does not make special limitations.
[0029] In some embodiments, the first plate body central portion 151 is configured such that when the millimeter wave radar to be tested 100 is directly opposite the port 131 of the radar target simulation device, the line OS connecting the millimeter wave radar to be tested 100 and the port 131 of the radar target simulation device is orthogonal to the first plate body central portion 151. The millimeter wave radar to be tested 100 being directly opposite the port 131 of the radar target simulation device means that the horizontal field of view angle of the millimeter wave radar to be tested 100 is zero.
[0030] As shown in FIG. 1, Figure 2 In some embodiments, the millimeter wave radar performance testing system of the present application further comprises a second plate body 160, the second plate body 160 is closer to the rotating platform 120 than the first plate body 150, and the surface of the second plate body 160 facing the rotating platform 120 is covered with a second wave-absorbing material 165. The second plate body 160 has a passage for the electromagnetic waves of the millimeter wave radar to be tested 100 to pass through. Similarly, the second wave-absorbing material 165 can effectively absorb the electromagnetic waves emitted by the millimeter wave radar, thereby providing a more accurate test environment.
[0031] In some embodiments, the second plate body 160 comprises a second plate body left side portion 161 and a second plate body right side portion 162. The second plate body left side portion 161 and the second plate body right side portion 162 are separated by a predetermined distance, thereby forming a passage for the electromagnetic waves of the millimeter wave radar to be tested to pass through. The electromagnetic waves of the millimeter wave radar to be tested 100 can be emitted to the port 131 of the radar target simulation device through the separated gap.
[0032] In some embodiments, the second plate body left side 161 is arranged parallel to the first plate body left side 152, and the second plate body right side 162 is arranged parallel to the first plate body right side 153. The second plate body 160 is used to filter a portion of the electromagnetic waves, and only allows a portion of the electromagnetic waves to pass through.
[0033] In some embodiments, the distance between the second plate body 160 and the rotating stand 120 is smaller than the distance between the second plate body 160 and the first plate body 150. The distance between the second plate body 160 and the first plate body 150 can be understood as the distance between the second plate body left side 161 and the first plate body left side 152, and the distance between the second plate body right side 162 and the first plate body right side 153. The distance between the second plate body 160 and the rotating stand 120 can be understood as the distance from the rotating stand 120 to the second plate body left side 161, and the distance from the rotating stand 120 to the second plate body right side 162. Therefore, the distance between the second plate body 160 and the rotating stand 120 being smaller than the distance between the second plate body 160 and the first plate body 150 means that either the distance from the rotating stand 120 to the second plate body left side 161 or the distance from the rotating stand 120 to the second plate body right side 162 is smaller than either the distance between the second plate body left side 161 and the first plate body left side 152 or the distance between the second plate body right side 162 and the first plate body right side 153.
[0034] As shown in FIG. 1, Figure 1 , 2 In some embodiments, a third wave-absorbing material 170 is laid horizontally between the rotating stand 120 and the port 131 of the radar target simulation device, and the horizontal position of the third wave-absorbing material 170 needs to be lower than the position of the millimeter wave radar to be tested 100. The third wave-absorbing material 170 can effectively absorb the electromagnetic waves emitted by the millimeter wave radar, thereby filtering a portion of the electromagnetic waves without affecting the performance test, and providing a more accurate test environment.
[0035] The third wave-absorbing material 170 can be laid on the ground or on a support, and can be set as needed, as long as the horizontal position of the third wave-absorbing material 170 is lower than the position of the millimeter wave radar to be tested 100.
[0036] In some embodiments, as shown in FIG. 1, Figure 2 , the third wave-absorbing material is only arranged in the area directly in front of the rotating stand 120.
[0037] Those skilled in the art should be able to appreciate that, in combination with the embodiments disclosed herein, modules, units and method steps of each example can be implemented by electronic hardware, computer software, or a combination of both. In order to clearly illustrate the interchangeability of electronic hardware and software, each example has been described in general terms by function in the above description. Whether the functions are performed by electronic hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can utilize different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.
[0038] Although the present application has been described with reference to the current specific embodiments, those skilled in the art should recognize that the scope of the present application is not limited to the technical solutions formed by the specific combinations of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or equivalent features, without departing from the concept of the present application. For example, the above features can be replaced with other technical features disclosed in the present application (but not limited to) having similar functions to form technical solutions.
Claims
1. A millimeter wave radar performance test system, characterized by, The system comprises: a radar target simulation device, a temperature control box, a rotating platform, and a control device; the rotating platform comprises a driving unit that drives the rotating platform to rotate according to a control signal from the control device; the temperature control box is located on the rotating platform and can rotate with the rotating platform, and the temperature control box has an opening; a millimeter wave radar to be tested is installed in the temperature control box and located at the opening; the radar target simulation device is installed outside the temperature control box, and a port of the radar target simulation device is located in a detection area of the millimeter wave radar to be tested; the control device sends a control signal to the rotating platform and obtains performance test results of the millimeter wave radar to be tested according to detection result information of the millimeter wave radar to be tested.
2. The millimeter wave radar performance test system of claim 1, further comprising a first plate body comprising a window for exposing the port of the radar target simulation device, and a surface of the first plate body facing the rotating platform being covered with a first wave-absorbing material.
3. The millimeter wave radar performance test system of claim 2, wherein the first plate body comprises a first plate body central part, a first plate body left side part, and a first plate body right side part, the window is located in the first plate body central part, the first plate body left side part is located on the left side of the first plate body central part and forms an angle greater than 90 degrees and less than 180 degrees with the first plate body central part, and the first plate body right side part is located on the right side of the first plate body central part and forms an angle greater than 90 degrees and less than 180 degrees with the first plate body central part.
4. The millimeter wave radar performance test system of claim 3, wherein the first plate body central part is arranged such that when the millimeter wave radar to be tested is directly opposite the port of the radar target simulation device, a line connecting the millimeter wave radar to be tested and the port of the radar target simulation device is perpendicular to the first plate body central part.
5. The millimeter wave radar performance test system of claim 3 or 4, further comprising a second plate body, the second plate body being closer to the rotating platform than the first plate body, a surface of the second plate body facing the rotating platform being covered with a second wave-absorbing material, and the second plate body having a passage through which electromagnetic waves of the millimeter wave radar to be tested can pass.
6. The millimeter wave radar performance test system of claim 5, wherein the second plate body comprises a second plate body left side part and a second plate body right side part, the second plate body left side part and the second plate body right side part being separated by a predetermined distance to form the passage through which the electromagnetic waves of the millimeter wave radar to be tested can pass.
7. The millimeter wave radar performance test system of claim 6, wherein the second plate body left side part is arranged to be parallel to the first plate body left side part, and the second plate body right side part is arranged to be parallel to the first plate body right side part.
8. The millimeter wave radar performance test system of claim 7, wherein a distance between the second plate body and the rotating platform is less than a distance between the second plate body and the first plate body. 9. The millimeter wave radar performance test system of claim 5, wherein, a third wave absorbing material is laid horizontally below the position of the millimeter wave radar to be tested between the port of the rotating gantry to the radar target simulation device.
10. The millimeter wave radar performance test system of claim 9, wherein, the third wave absorbing material is only arranged in the area in front of the rotating gantry.