Laser alignment device for millimeter wave radar test

Abstract

The utility model provides a laser alignment device used for millimeter wave radar test, comprising a false millimeter wave radar which has the same shape, size and geometric center as a millimeter wave radar to be tested, and is marked with the antenna center of the millimeter wave radar to be tested; a point-like laser pointer which can emit a point-like laser; the indicator adapter is used for installing a point-shaped laser indicator, when the point-shaped laser indicator is installed on the indicator adapter, a transmitting port of the point-shaped laser indicator is exposed to the outside, the indicator adapter can be assembled to a false millimeter wave radar, and when the indicator adapter is assembled to the false millimeter wave radar, the transmitting port of the point-shaped laser indicator is exposed to the outside. And a transmitting port of the point-shaped laser indicator coincides with the antenna center of the millimeter-wave radar to be tested marked by the false millimeter-wave radar.

Description

TECHNICAL FIELD

[0001] The utility model relates to millimeter wave radar test field especially, and it relates to a kind of laser alignment device for millimeter wave radar test. BACKGROUND

[0002] With the development and popularization of automatic driving car, automatic driving car is more and more intelligent, and is more and more widely used. Whether it is auxiliary driving function or automatic driving function, it needs to be detected and perceived by various vehicle-mounted radars to realize various functions of auxiliary driving or automatic driving. Therefore, in order to ensure safe driving, the performance of millimeter wave radar needs to be accurately measured.

[0003] When testing various performances of millimeter wave radar, first, the center of the antenna of millimeter wave radar needs to be aligned with the center of corner reflector (or the transmitting and receiving antenna of radar target simulation device). Since the electromagnetic wave emitted by millimeter wave radar is invisible to the naked eye, the alignment needs to consume more time and labor cost. SUMMARY

[0004] The utility model is completed to solve the above problem, and its purpose is to provide a kind of laser alignment device for millimeter wave radar test, which can simply and conveniently align the center of millimeter wave radar antenna with the center of corner reflector (or the transmitting and receiving antenna of radar target simulation device) in millimeter wave radar test.

[0005] According to one aspect of the utility model, a kind of laser alignment device for millimeter wave radar test is provided, including: false millimeter wave radar, the false millimeter wave radar with the same shape, size and geometric center with the millimeter wave radar to be tested, and the false millimeter wave radar is marked with the antenna center of the millimeter wave radar to be tested;Point laser pointer, the point laser pointer can emit point laser;And indicator adapter, the indicator adapter is used to install the point laser pointer, when the point laser pointer is installed in the indicator adapter, the emission port of the point laser pointer is exposed outside, the indicator adapter can be assembled to the false millimeter wave radar, when the indicator adapter is assembled to the false millimeter wave radar, the emission port of the point laser pointer coincides with the antenna center of the millimeter wave radar to be tested marked by the false millimeter wave radar.

[0006] Preferably, the false millimeter wave radar only includes shell, and the shell includes bottom plate and four side walls orthogonal to the bottom plate.

[0007] Preferably, the indicator adapter includes main body part, and the main body part includes a groove, and the groove is matched with the point laser pointer in size, so that the point laser pointer can be embedded in the groove with the emission port exposed outside.

[0008] Preferably, the indicator adapter further comprises a mounting plate formed on the opposite side of the recess of the main body, the mounting plate being used to assemble the indicator adapter to the dummy millimeter wave radar.

[0009] Preferably, the dummy millimeter wave radar is provided with a plurality of positioning holes, the mounting plate is correspondingly provided with a plurality of mounting holes, a plurality of fasteners are used to pass through the plurality of mounting holes of the mounting plate and fasten to the plurality of positioning holes, so as to fix the indicator adapter to the dummy millimeter wave radar, and the plurality of positioning holes and the plurality of mounting holes are arranged such that the emission port of the point laser indicator is coincident with the center of the antenna of the millimeter wave radar to be tested when the indicator adapter is fixed to the dummy millimeter wave radar.

[0010] Preferably, the indicator adapter has a second through hole passing through from the bottom surface of the recess to the outer surface of the mounting plate.

[0011] Preferably, the cross-sectional area of the second through hole is smaller than the cross-sectional area of the recess.

[0012] Preferably, the bottom plate of the shell comprises a first through hole, and the second through hole and the first through hole at least partially overlap when the indicator adapter is assembled to the dummy millimeter wave radar.

[0013] Preferably, the main body is in a cylindrical shape. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a perspective view of the laser alignment device provided by the embodiment of the present application.

[0015] Figure 2 is a sectional view of the laser alignment device provided by the embodiment of the present application.

[0016] Figure 3 is a perspective view of the dummy millimeter wave radar provided by the embodiment of the present application. DETAILED DESCRIPTION

[0017] The present application will be further described in detail below in conjunction with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the related application, and not to limit the application. In addition, it should be noted that, in order to facilitate the description, only the parts related to the application are shown in the drawings.

[0018] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," 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.

[0019] Embodiments described herein can be described with reference to plan views and / or cross-sectional views by virtue of the ideal schematic nature of the drawings. In other words, the example illustrations are schematic in nature and their shapes are not intended to be limiting. The embodiments are therefore to be understood as not necessarily limited to the examples illustrated in the drawings, which are given by way of explanation of the application only and therefore do not exhaust the scope of the application. Consequently, the shapes of the regions illustrated in the drawings serve the purpose of simplifying the drawings and the embodiments are not limited to the precise shapes of the regions illustrated in the drawings.

[0020] 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 overly literal or overly formal sense unless expressly so defined herein.

[0021] In order to make the objectives, technical schemes and advantages of the utility model more clear, the embodiments of the utility model will be further described in detail below in combination with the drawings.

[0022] The embodiment of the application provides a laser alignment device 100 for millimeter wave radar testing, which can be used for alignment before testing when various performance tests are performed on the millimeter wave radar to be tested.

[0023] Figure 1 is a perspective view of the laser alignment device 100 provided by the embodiment of the utility model. Figure 2 is a sectional view of the laser alignment device 100 provided by the embodiment of the utility model.

[0024] Exemplarily, reference is made to Figure 1 and Figure 2This application describes a laser alignment device 100 for testing millimeter-wave radar. The laser alignment device 100 includes a dummy millimeter-wave radar 110, a dot laser pointer 130, and a pointer adapter 120. The dummy millimeter-wave radar 110 has the same shape, size, and geometric center as the millimeter-wave radar under test, and the dummy millimeter-wave radar 110 is marked with the antenna center of the millimeter-wave radar under test. It can be understood that the dummy millimeter-wave radar 110 is manufactured based on the millimeter-wave radar under test. Typically, each different model and specification of millimeter-wave radar has a different shape and size, and naturally, a different geometric center and antenna center. Therefore, if the model or specification of the millimeter-wave radar under test changes, a new dummy millimeter-wave radar 110 needs to be manufactured. Furthermore, the marked antenna center can be a physical mark or a recorded position (coordinates) of the antenna center. The dot laser pointer 130 emits a dot laser, forming a clearly visible dot indication, which allows the tester to adjust the dot laser to align with the center of the transmitting and receiving antenna of a corner reflector or radar target simulation device. The indicator adapter 120 is used to mount the dot laser pointer 130. When the dot laser pointer 130 is mounted on the indicator adapter 120, the emission port 131 of the dot laser pointer 130 is exposed to the outside, so that the laser beam of the dot laser pointer 131 can be emitted without obstruction. The indicator adapter 120 can be assembled to the fake millimeter-wave radar 110. When the indicator adapter 120 is assembled to the fake millimeter-wave radar 110, the emission port 131 of the dot laser pointer 130 coincides with the antenna center of the millimeter-wave radar under test marked by the fake millimeter-wave radar 110.

[0025] like Figure 2 As shown, in some embodiments, the dummy millimeter-wave radar 110 is fabricated as consisting only of a housing, which includes a base plate 111 and four side walls 112 orthogonal to the base plate 111. It can be understood that the housing formed by the base plate 111 and the four side walls 112 has the same shape, size, and geometric center as the millimeter-wave radar under test. Therefore, the dummy millimeter-wave radar 110 can be fabricated simply and at low cost. The dummy millimeter-wave radar 110 is fabricated, for example, by 3D printing.

[0026] Figure 3is a perspective view of the false millimeter wave radar. In some embodiments, the indicator adapter 120 includes a main body portion 121 that includes a recess 1211 sized to receive the dot laser pointer 130 such that the dot laser pointer 130 is inserted into the recess 1211 with the emission port 131 exposed to the outside. The recess 1211 sized to receive the dot laser pointer 130 can be understood to mean that the dot laser pointer 130 is just able to be inserted into the recess 1211 and is restricted from displacement when the dot laser pointer 130 is inserted into the recess 1211. That is, when the dot laser pointer 130 is pushed into the recess 1211 and abuts the bottom surface 1212 of the recess 1211, the dot laser pointer 130 does not move in the front-rear, up-down, and left-right directions without an external force. The depth of the recess 1211 is preferably less than the length of the dot laser pointer 130 as shown in Figure 2 so that the end portion of the dot laser pointer 130 with the emission port 131 is exposed to the outside, so that the dot laser pointer 130 can be easily removed.

[0027] The indicator adapter 120 further includes a mounting plate 122 as shown in Figure 3 The mounting plate 122 is formed on the opposite side of the main body portion 121 from the recess 1211 and is used to assemble the indicator adapter 120 to the false millimeter wave radar 110. As shown in the embodiments in Figure 1 , Figure 2 The recess is formed in the first face of the main body portion 121 and the mounting plate 122 is formed on the second face 1214 of the main body portion 121 opposite the first face. The false millimeter wave radar 110 can be provided with a plurality of positioning holes 113 and the mounting plate 122 is correspondingly provided with a plurality of mounting holes 1221, a plurality of fasteners (not shown) are passed through the plurality of mounting holes 1221 of the mounting plate 122 and fastened to the plurality of positioning holes 113 to fix the indicator adapter 120 to the false millimeter wave radar 110, the plurality of positioning holes 113 and the plurality of mounting holes 1221 are set according to the marked antenna center of the millimeter wave radar to be tested, so that when the indicator adapter 120 is fixed to the false millimeter wave radar 110, the emission port 131 of the dot laser pointer 130 coincides with the antenna center of the millimeter wave radar to be tested.

[0028] In some embodiments, the indicator adapter 120 has a second through hole 123 which penetrates from the bottom surface 1212 of the groove 1211 to the outer surface of the mounting plate 122. When the point laser indicator 130 is provided with a wire harness, the wire harness can pass through the second through hole 123. Moreover, the cross-sectional area of the second through hole 123 is smaller than the cross-sectional area of the groove 1211, so that the step formed by the groove 1211 and the second through hole 123 can better limit the displacement of the point laser indicator 130 in the insertion direction of the insertion of the groove 1211.

[0029] The bottom plate 111 of the shell includes a first through hole 114, and when the indicator adapter 120 is assembled to the dummy millimeter wave radar 110, the second through hole 123 at least partially overlaps the first through hole 114, so that when the point laser indicator 130 is provided with a wire harness, the wire harness can pass through the second through hole 123, then pass through the first through hole 114, and be connected to a power supply or other equipment.

[0030] In some embodiments, the main body part of the indicator adapter 120 is cylindrical as shown in the embodiment, but the present application is not limited thereto, and the main body part of the indicator adapter 120 can also have other shapes.

[0031] When the laser alignment device 100 of the present application is used for millimeter wave radar testing, the point laser indicator needs to be first installed in the indicator adapter, and the indicator adapter is assembled to the dummy millimeter wave radar to form a complete laser alignment device 100. Then, the laser alignment device 100 is installed on the radar support in the millimeter wave radar testing system, and the position of the radar support or the position of the transceiving antenna of the corner reflector / radar target simulation device is adjusted using the visible laser beam emitted by the point laser indicator, so that the laser beam is aligned with the center of the transceiving antenna of the corner reflector / radar target simulation device. After the alignment is completed, the laser alignment device 100 is removed from the radar support, and the millimeter wave radar to be tested is installed, and the testing can be started.

[0032] In this way, the center of the millimeter wave radar antenna can be simply and conveniently aligned with the center of the corner reflector (or the transceiving antenna of the radar target simulation device), and the time and labor cost in the development testing process is saved.

[0033] 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 use 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.

[0034] Although the present application has been described with reference to the current specific embodiments, those skilled in the art should realize 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 combinations of the above technical features or their equivalent features without departing from the concept of the present application. For example, the above features can be replaced with the technical features disclosed in the present application (but not limited to) having similar functions to form technical solutions.

Claims

1. A laser alignment device for millimeter wave radar testing, characterized by, comprises: a dummy millimeter wave radar having the same shape, size and geometric center as the millimeter wave radar to be tested, and marked with the antenna center of the millimeter wave radar to be tested; a point laser pointer capable of emitting a point laser beam; and a pointer adapter for mounting the point laser pointer, the emitting port of the point laser pointer being exposed to the outside when the point laser pointer is mounted on the pointer adapter, the pointer adapter being assembled to the dummy millimeter wave radar, the emitting port of the point laser pointer coinciding with the antenna center of the millimeter wave radar to be tested marked on the dummy millimeter wave radar when the pointer adapter is assembled to the dummy millimeter wave radar.

2. The laser alignment device for millimeter wave radar testing according to claim 1, wherein the dummy millimeter wave radar only comprises a housing including a bottom plate and four side walls orthogonal to the bottom plate.

3. The laser alignment device for millimeter wave radar testing according to claim 2, wherein the pointer adapter comprises a main body portion including a recess sized to fit the point laser pointer such that the point laser pointer can be inserted into the recess with the emitting port exposed to the outside.

4. The laser alignment device for millimeter wave radar testing according to claim 3, wherein the pointer adapter further comprises a mounting plate formed on the opposite side of the recess of the main body portion, the mounting plate being used to assemble the pointer adapter to the dummy millimeter wave radar.

5. The laser alignment device for millimeter wave radar testing according to claim 4, wherein the dummy millimeter wave radar is provided with a plurality of positioning holes, the mounting plate is correspondingly provided with a plurality of mounting holes, and a plurality of fasteners are used to pass through the plurality of mounting holes of the mounting plate and fasten to the plurality of positioning holes, thereby fixing the pointer adapter to the dummy millimeter wave radar, the plurality of positioning holes and the plurality of mounting holes are arranged such that the emitting port of the point laser pointer coincides with the antenna center of the millimeter wave radar to be tested when the pointer adapter is fixed to the dummy millimeter wave radar.

6. The laser alignment device for millimeter wave radar testing according to claim 5, wherein the pointer adapter has a second through hole passing through from the bottom surface of the recess to the outer surface of the mounting plate.

7. The laser alignment device for millimeter wave radar testing according to claim 6, wherein the cross-sectional area of the second through hole is smaller than the cross-sectional area of the recess.

8. The laser alignment device for millimeter wave radar testing according to claim 6 or 7, wherein the bottom plate of the housing comprises a first through hole, and the second through hole at least partially overlaps the first through hole when the pointer adapter is assembled to the dummy millimeter wave radar.

9. The laser alignment device for millimeter wave radar testing according to claim 3, wherein ​ The main body part is cylindrical. The main body part is cylindrical.

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