Ultrasonic radar tool clamp based on test

Abstract

The utility model provides a tool clamp based on ultrasonic radars for tests, and the tool clamp comprises a support which comprises a support body, a first fixing position and a plurality of second fixing positions, the first fixing position and the second fixing positions are arranged on the support body, and each fixing position is used for detachably fixing one ultrasonic radar; the wave absorbing layer is arranged on the first side face of the support, the emitting face of the ultrasonic radar fixed to the first fixing position avoids the wave absorbing layer, and the emitting face of the ultrasonic radar fixed to the second fixing position is attached to the wave absorbing layer; therefore, the ultrasonic radar fixed on the first fixing position is in a ranging working state, and the ultrasonic radars fixed on the second fixing position are in a non-ranging state. According to the invention, a plurality of ultrasonic radars can be fixed in a compatible manner, and the interference of the ultrasonic radars in a non-ranging state on the test can be reduced.

Description

Technical Field

[0001] This application belongs to the field of radar test fixture technology, and in particular relates to a test ultrasonic radar fixture. Background Technology

[0002] In response to the current trend of intelligent vehicle development, ultrasonic radar is being used more and more widely in the field of intelligent driving. In the research and development verification stage of automotive components (hereinafter referred to as DV test), ultrasonic radar needs to be fixed to maintain its stability during the test.

[0003] The current mature intelligent driving domain control system is based on the 5V5R12U architecture, which requires 12 ultrasonic radar modules. The number of ultrasonic radars may be reduced depending on the vehicle model, but the maximum number used is generally 12.

[0004] In DV testing, it is often required that all radars be in working order, with one ultrasonic radar maintaining ranging mode while the other ultrasonic radars do not perform ranging determination.

[0005] Ultrasonic radar is typically installed with automotive exterior parts, lacking screw mounting points, which makes it inconvenient for DV testing. Therefore, designing a standardized testing fixture compatible with high-configuration intelligent driving domain control solutions is an urgent problem to be solved to facilitate testing. Utility Model Content

[0006] In view of at least one of the above-mentioned technical problems in the prior art, this application provides a test ultrasonic radar tooling fixture, which can be compatible with fixing multiple ultrasonic radars and can avoid interference from ultrasonic radars in non-ranging state to the test.

[0007] The technical solution adopted in this application embodiment is: a tooling fixture based on experimental ultrasonic radar, comprising:

[0008] The bracket includes a bracket body and a first fixing position and a plurality of second fixing positions disposed on the bracket body, each fixing position being used to detachably fix an ultrasonic radar.

[0009] An absorbing layer is disposed on the first side of the bracket. The emitting surface of the ultrasonic radar fixed at the first fixed position avoids the absorbing layer, and the emitting surfaces of the ultrasonic radar fixed at the second fixed position are all attached to the absorbing layer, so that the ultrasonic radar fixed at the first fixed position is in the ranging working state, and the ultrasonic radar fixed at the second fixed position is in the non-ranging state.

[0010] In an optional embodiment, the first fixing position includes a fixing block, which protrudes from the second side of the bracket body opposite to the first side. The fixing block is provided with a groove that is adapted to the outer peripheral surface of the ultrasonic radar. The ultrasonic radar is embedded in the groove and its emitting surface is exposed outside the groove for ranging.

[0011] In an optional embodiment, the ultrasonic radar includes a radar body, a transmitting part and a connecting part disposed on the radar body, the radar body being cylindrical, and having at least one protrusion on its outer peripheral surface;

[0012] The groove on the fixing block is an arc-shaped groove adapted to the radar body. The groove wall is provided with at least one slot. When the radar body of the ultrasonic radar is placed in the groove, at least one of the protrusions is inserted into at least one of the slots.

[0013] In an optional embodiment, the second fixing position includes an annular boss protruding from the second side of the bracket body. A through hole adapted to the ultrasonic radar is formed in the annular boss. The through hole extends to the first side of the bracket body. The ultrasonic radar is inserted into and fixed in the through hole with its emitting surface facing the bracket body.

[0014] In an optional embodiment, the ultrasonic radar includes a radar body, a transmitting part, and a connecting part; the transmitting part is located at one end of the radar body in the axial direction and is coaxially arranged with the radar body, and the end face of the free end of the transmitting part forms the transmitting surface; the connecting part is located at the other end of the radar body in the axial direction and extends along the radial direction of the radar body.

[0015] The annular boss has a limiting groove on one end face away from the bracket body. The radar body is inserted into the through hole with the emitting part facing the absorbing layer, and the emitting surface of the emitting part is in close contact with the absorbing layer. The connecting part is positioned in the limiting groove.

[0016] In an optional embodiment, the tooling fixture further includes an elastic washer, which is sleeved on the outside of the radar body and tightly fitted with the wall of the through hole.

[0017] In an optional embodiment, the support body is plate-shaped and has a first side and a second side opposite to the first side. The first side is planar, and the wave-absorbing layer is attached to the first side.

[0018] In an optional embodiment, the microwave absorbing layer includes a sound-absorbing cotton layer, a wool pad layer, or a microwave absorbing foam layer.

[0019] In an optional embodiment, the bracket body, the first fixing position, and the plurality of second fixing positions are an integral structure; and / or

[0020] The support body, the first fixing position, and the plurality of second fixing positions are all made of polylactic acid resin.

[0021] In an optional embodiment, the bracket body is semi-circular, the first fixing position is located close to the center of the semi-circle, and a plurality of second fixing positions form two arcs, with the centers of the two arcs and the center of the semi-circle concentric; and / or

[0022] The experimental ultrasonic radar tooling fixture also includes an auxiliary frame, which is semi-circular and coplanar with the support body, and the center of the auxiliary frame coincides with the center of the support body.

[0023] Compared with the prior art, the beneficial effects of the embodiments of this application are as follows:

[0024] 1. The tooling fixture of this application solves the problem of inconvenient fixing of ultrasonic radar in the DV test of automotive parts, and can avoid the ultrasonic radar in a non-range measuring state from causing negative interference to the test.

[0025] 2. The tooling fixture of this application is compatible with intelligent driving systems with twelve or fewer ultrasonic radars, has a wide range of applications, and requires no other auxiliary measures besides this tooling fixture to achieve stable fixation of the ultrasonic radar;

[0026] 3. The tooling fixture of this application has a simple, lightweight, and compact structure, making it easy to carry, mail, and move;

[0027] 4. The tooling fixture of this application has a clear fixing position, is easy to install and operate, and can be used with simple instructions.

[0028] It should be understood that the foregoing general description and the following detailed description are exemplary and illustrative only, and are not intended to limit this application.

[0029] The overview of various implementations or examples of the technology described in this application is not a full disclosure of the entire scope or all features of the disclosed technology. Attached Figure Description

[0030] In drawings that are not necessarily drawn to scale, the same reference numerals may describe similar parts in different views. The drawings generally illustrate various embodiments by way of example rather than limitation and are used, together with the description and claims, to illustrate the disclosed embodiments. Where appropriate, the same reference numerals are used in all drawings to refer to the same or similar parts. Such embodiments are illustrative and not intended to be exhaustive or exclusive embodiments of the apparatus or method.

[0031] Figure 1 This is a three-dimensional structural diagram of a test ultrasonic radar tooling fixture according to an embodiment of this application.

[0032] Figure 2 This is a top view of the experimental ultrasonic radar tooling fixture according to an embodiment of this application.

[0033] Figure 3 This is a front view of the experimental ultrasonic radar tooling fixture according to an embodiment of this application.

[0034] Figure 4 This is a schematic diagram showing the usage state of the experimental ultrasonic radar tooling fixture according to an embodiment of this application.

[0035] Figure 5 This is a three-dimensional structural diagram of the ultrasonic radar according to an embodiment of this application.

[0036] Figure 6 This is a side view of the ultrasonic radar according to an embodiment of this application.

[0037] Figure label:

[0038] 1-Bracket body; 2-Fixing block; 21-Groove; 211-Reduced diameter section; 22-Slot; 3-Annular boss; 31-Through hole; 32-Limiting groove; 33-Stop block; 4-Absorbing layer; 5-Auxiliary frame; 6-Ultrasonic radar; 61-Radar body; 611-First protrusion; 612-Second protrusion; 62-Transmitting part; 621-Transmitting surface; 63-Connecting part. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the described embodiments of this application without creative effort are within the scope of protection of this application.

[0040] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0041] To keep the following description of the embodiments of this application clear and concise, detailed descriptions of known functions and known components are omitted.

[0042] This application provides a test ultrasonic radar fixture for fixing an ultrasonic radar 6 during the testing phase of automotive component R&D verification.

[0043] like Figures 1 to 4 As shown, the tooling fixture of this embodiment includes a bracket and an absorbing layer 4. The bracket includes a bracket body 1 and a first fixing position and a plurality of second fixing positions disposed on the bracket body 1. Each fixing position is used to detachably fix an ultrasonic radar 6. The absorbing layer 4 is disposed on a first side of the bracket. The emitting surface 621 of the ultrasonic radar 6 fixed at the first fixing position avoids the absorbing layer 4, that is, the emitting surface 621 does not contact the absorbing layer 4, and the emitting surface 621 can normally transmit ultrasonic waves and is in the ranging working state. The emitting surfaces 621 of the ultrasonic radar 6 fixed at the second fixing positions are all attached to the absorbing layer 4 and are all in the non-ranging state.

[0044] This application, by setting up a bracket with a first fixed position and a second fixed position, can simultaneously fix multiple ultrasonic radars 6. With the setting of the absorbing layer 4, one ultrasonic radar 6 fixed at the first fixed position is in the ranging working state, while multiple ultrasonic radars 6 fixed at the second fixed position are all in the non-ranging state, so as to reduce the interference of the ultrasonic radar 6 in the non-ranging state to the test environment and ensure the accuracy of the test.

[0045] It should be noted that the ultrasonic radar 6 fixed at the first fixed position and the ultrasonic radar 6 fixed at the second fixed position have the same structure and specifications.

[0046] In some embodiments, such as Figure 1As shown, the first fixing position includes a fixing block 2, which protrudes from the second side of the bracket body 1 opposite to the first side. The fixing block 2 has a groove 21 that matches the outer peripheral surface of the ultrasonic radar 6. The ultrasonic radar 6 is embedded in the groove 21, with its emitting surface 621 exposed outside the groove 21 for ranging. The structure of this first fixing position is simple, easy to manufacture, and convenient to implement.

[0047] like Figure 5 and Figure 6 As shown, the ultrasonic radar 6 includes a radar body 61 and a transmitting part 62 and a connecting part 63 disposed on the radar body 61. The radar body 61 is generally cylindrical, and at least one protrusion is provided on its outer peripheral surface. The groove 21 on the fixing block 2 is an arc-shaped groove adapted to the radar body 61, and at least one slot 22 is provided on the groove wall of the groove 21. When the radar body 61 of the ultrasonic radar 6 is placed in the groove 21, at least one protrusion is inserted into at least one slot 22. Through the cooperation of the protrusion and the slot 22, the ultrasonic radar 6 is more stably fixed in the first fixing position, preventing the ultrasonic radar 6 from falling out of the groove 21.

[0048] Continue to combine Figure 5 and Figure 6 Three protrusions are provided on the outer peripheral surface of the radar body 61. Two of the three protrusions have the same structure and are set at 180 degrees on the outer peripheral surface of the radar body 61. These two protrusions can be defined as the first protrusion 611, and the other protrusion can be defined as the second protrusion 612. The second protrusion 612 is located between the two first protrusions 611 in the circumferential direction of the radar body 61, and in the axial direction of the radar body 61, the second protrusion 612 is offset from the two first protrusions 611.

[0049] For example, such as Figure 5 and Figure 6 As shown, the first protrusion 611 has a wedge-shaped structure with the tip pointing outwards, and the second protrusion 612 includes an arc-shaped plate extending circumferentially along the radar body 61 and a protrusion provided on one side of the arc-shaped plate, so that the second protrusion 612 forms a generally T-shaped structure.

[0050] like Figure 1 and Figure 2 As shown, the groove 21 of the fixing block 2 has three slots 22 on its groove wall, each corresponding to one of the three protrusions. Two of the slots 22 are located on two corresponding sides of the groove wall, and their shapes are adapted to the shape of the first protrusion 611; the other slot 22 is located at the bottom of the groove wall, and its shape is adapted to the shape of the second protrusion 612.

[0051] The radar body 61 is placed in the groove 21 with its second protrusion 612 facing the bottom of the groove 21, and the second protrusion 612 is inserted into the slot 22 located at the bottom of the groove 21. Meanwhile, the two first protrusions 611 are simultaneously inserted into the two slots 22 located on the side of the groove 21. In this way, the ultrasonic radar 6 is stably fixed on the fixing block 2, and the ultrasonic radar 6 is fixed in the first fixed position.

[0052] like Figure 5 and Figure 6 As shown, the transmitting part 62 of the ultrasonic radar 6 is generally cylindrical. The transmitting part 62 is located at one end of the radar body 61 in the axial direction and is coaxially arranged with the radar body 61. The outer diameter of the transmitting part 62 is smaller than the outer diameter of the radar body 61, and the end face of the free end of the transmitting part 62 forms a transmitting surface 621. The connecting part 63 is located at the other end of the radar body 61 in the axial direction and extends along the radial direction of the radar body 61. Figure 1 and Figure 2 As shown, the groove 21 has a reduced diameter section 211 adapted to the transmitter 62, so that the radar body 61 and the transmitter 62 are placed in the groove 21 at the same time, and the transmitting surface 621 of the transmitter 62 is exposed.

[0053] In some embodiments, such as Figure 1 and Figure 2 As shown, the second fixing position includes an annular boss 3 protruding from the second side of the bracket body 1. A through hole 31, adapted to the radar body 61 of the ultrasonic radar 6, is formed within the annular boss 3. The through hole 31 extends to the first side of the bracket body 1. The ultrasonic radar 6 is inserted into the through hole 31 with its emitting surface 621 facing the bracket body 1, and the radar body 61 and the through hole 31 form a tight fit (interference fit), thereby stably fixing the ultrasonic radar 6 to the second fixing position. The second fixing position, using an annular boss 3, can effectively fix the radar body 61, and is simple and convenient to operate.

[0054] The through hole 31 extends to the first side of the support body 1. This can be understood as the support body 1 having a hole communicating with the through hole 31, and the hole extending from the second side of the support body 1 to the first side of the support body 1 to form a through hole. The end of the through hole on the first side is covered by the absorbing layer 4. Thus, when the radar body 61 of the ultrasonic radar 6 is fixed in place within the through hole 31, the transmitting part 62 passes through the hole (through hole) on the support body 1 and faces the absorbing layer 4, and the transmitting surface 621 of the transmitting part 62 is tightly attached to the absorbing layer 4.

[0055] like Figure 5 and Figure 6As shown, three protrusions are located on the outer peripheral surface of the other end of the radar body 61. When the radar body 61 and the transmitter 62 are inserted into the through hole 31, the other end of the radar body 61, the connecting part 63 located near the other end, and the protrusions are all located outside the through hole 31, thus preventing the radar body 61 from being tightly fitted with the through hole 31. See [reference needed]. Figure 4 Furthermore, when the radar body 61 is inserted into the through hole 31 and the transmitting surface 621 of the transmitting part 62 presses against the absorbing layer 4, the second protrusion 612 on the radar body 61 just abuts against the end face of the annular protrusion 3, making it easy to determine that the radar body 61 is inserted in place.

[0056] In some embodiments, such as Figure 1 and Figure 2 As shown, a limiting groove 32 is provided on the end face of the annular boss 3 away from the support body 1. The radar body 61 is inserted into the through hole 31 with the transmitting part 62 facing the absorbing layer 4, and the transmitting surface 621 of the transmitting part 62 is tightly abutting against the absorbing layer 4. The connecting part 63 is positioned in the limiting groove 32. By setting the limiting groove 32, the ultrasonic radar 6 placed in the second fixed position can be radially positioned to prevent the ultrasonic radar 6 from rotating and affecting the test results.

[0057] The method of forming the limiting groove 32 is not limited. For example, two stop blocks 33 can be set on the end face of the annular boss 3, and the limiting groove 32 is formed between the two stop blocks 33.

[0058] In this embodiment, by setting the first and second fixing positions of the above-mentioned structure on the bracket body 1, multiple non-range-measuring ultrasonic radars 6 can be fixed simply by directly inserting them into the through holes 31 of the annular boss 3, and a single range-measuring ultrasonic radar can be fixed simply by placing it into the groove 21 of the fixing block 2. No external fixing means such as screws are required, and it does not rely on the original fixing structure of the ultrasonic radar 6, which simplifies the test environment setup and enhances its versatility. Moreover, the fixing position of the ultrasonic radar 6 is clear, and the fixing method is simple and straightforward, allowing for operation with simple instructions.

[0059] Furthermore, the tooling fixture may also include an elastic washer, which is fitted over the radar body 61 and tightly fitted against the wall of the through hole 31. By using the elastic washer, the tightness of the fit between the radar body 61 and the through hole 31 can be improved, ensuring the radar body 61 remains stably within the through hole 31. In addition, the elastic washer can also wrap around the outer periphery of the transmitting part 62 to protect it from friction with the inner wall of the through hole 31. The elastic washer can be a silicone waterproof washer to improve the waterproof performance of the ultrasonic radar 6.

[0060] Continue to combine Figures 1 to 3The support body 1 is roughly plate-shaped and has a first side and a second side opposite to the first side. The first side is flat, and the wave-absorbing layer 4 is attached to the first side. Designing the first side as a flat surface facilitates the adhesion of the soft wave-absorbing layer 4 to the support body 1 and reduces gaps; at the same time, the flat first side can also support the support body 1, making the support body 1 more stable when placed on the workbench and less prone to tipping over.

[0061] By setting up the absorbing layer 4, the transmitting surfaces 621 of all ultrasonic radars 6 except for one ultrasonic radar 6 in the ranging state can be set close to the absorbing layer 4 in the DV test requirements, avoiding interference with the test, making the test operation standardized, and reducing the failure rate.

[0062] This application does not specifically limit the material used to form the microwave absorbing layer 4, as long as it can achieve the microwave absorption effect to ensure the normal and smooth progress of the experiment. For example, the materials for the microwave absorbing layer 4 include, but are not limited to: sound-absorbing cotton, wool pad, microwave absorbing foam, etc. The microwave absorbing layer 4 formed using the above materials includes a sound-absorbing cotton layer, a wool pad layer, or a microwave absorbing foam layer.

[0063] To improve the overall structural stability, the bracket body 1, the first fixing position, and the multiple second fixing positions can be a single integrated structure. The bracket body 1, the first fixing position, and the multiple second fixing positions are all made of polylactic acid resin (PLA resin). This material is lightweight, inexpensive, and impact-resistant, which helps to make the bracket body 1 lightweight and durable, facilitating the carrying and repeated use of tooling fixtures.

[0064] The structural form of the support body 1 in this application embodiment is not limited; for example, it can be a regular or irregular shape. Figure 1 and Figure 2 As shown in the figure, the bracket body 1 in this embodiment is semi-circular. The first fixing position is located close to the center of the semi-circle, and multiple second fixing positions form two arcs, with the centers of the two arcs and the center of the semi-circle concentric. This arrangement makes the overall structure compact, bringing the multiple fixing positions together as much as possible, thereby reducing the outer contour size of the bracket body 1 for easy carrying and mailing. This is also suitable for DV testing, which is usually conducted by outsourced laboratories, and involves the frequent movement of test materials and tooling fixtures. The tooling fixtures must meet the requirements of being easy to carry, move, mail, and be reusable.

[0065] The maximum size of the support body 1 in this embodiment can be designed to be less than 20cm. For example, the maximum size in the length, width and height directions does not exceed 20cm. This miniaturized design not only facilitates the carrying and movement of tooling fixtures, but also helps to reduce mailing costs and facilitates mailing and allocation between different test sites.

[0066] like Figure 1 and Figure 2 As shown, considering the test scenario in which the maximum number of ultrasonic radars 6 used in the DV test is twelve, the support body 1 of this application embodiment is designed with a total of twelve fixed positions for ultrasonic radars 6, namely one first fixed position and eleven second fixed positions. The first fixed position is the radar ranging fixed position, and the second fixed position is the radar non-ranging fixed position, so as to meet the requirement that one radar is in the ranging working state and eleven radars are in the non-ranging state in the DV test. Moreover, the emitting surface 621 of the eleven radars is close to the absorbing layer 4 to minimize the interference to the test environment.

[0067] The bracket body 1 has one first fixing position and eleven second fixing positions, which can accommodate the test requirements of intelligent driving structures with twelve ultrasonic radars 6 or less. When the number of ultrasonic radars 6 used for testing is less than twelve, the placement of the ultrasonic radars 6 can be adjusted arbitrarily according to the number of ultrasonic radars 6. That is, the ultrasonic radar 6 in non-range measuring state can be fixed at any of the second fixing positions, and the extra second fixing positions can be left unused.

[0068] In some embodiments, such as Figure 1 and Figure 2 As shown, the tooling fixture in this embodiment of the application also includes an auxiliary frame 5. The auxiliary frame 5 is semi-circular and coplanar with the support body 1, and the center of the auxiliary frame 5 coincides with the center of the support body. That is, the straight perimeter of the auxiliary frame 5 is in contact with the straight perimeter of the support body 1. By setting the auxiliary frame 5, it can be used to measure the detection angle of the ultrasonic radar 6 in the ranging working state, so as to realize a wider range of application scenarios, rather than being limited to DV testing.

[0069] To facilitate the carrying and movement of the tooling fixtures, the auxiliary frame 5 can be made as small as possible while still meeting usage requirements. For example, ... Figure 1 and Figure 2 As shown, the diameter of the auxiliary frame 5 is much smaller than the diameter of the support body 1.

[0070] The above description is intended to be illustrative and not restrictive. Those skilled in the art can make variations, modifications, substitutions, and alterations to the above embodiments within the scope of this disclosure. Moreover, the above examples (or one or more of them) can be used in combination with each other, and these embodiments can be combined with each other in various combinations or arrangements.

Claims

1. A tooling fixture based on experimental ultrasonic radar, characterized in that, include: The bracket includes a bracket body and a first fixing position and a plurality of second fixing positions disposed on the bracket body, each fixing position being used to detachably fix an ultrasonic radar. An absorbing layer is disposed on the first side of the bracket. The emitting surface of the ultrasonic radar fixed at the first fixed position avoids the absorbing layer, and the emitting surfaces of the ultrasonic radar fixed at the second fixed position are all attached to the absorbing layer, so that the ultrasonic radar fixed at the first fixed position is in the ranging working state, and the ultrasonic radar fixed at the second fixed position is in the non-ranging state.

2. The experimental ultrasonic radar tooling fixture according to claim 1, characterized in that, The first fixing position includes a fixing block, which protrudes from the second side of the bracket body opposite to the first side. The fixing block has a groove that matches the outer peripheral surface of the ultrasonic radar. The ultrasonic radar is embedded in the groove and its emitting surface is exposed outside the groove for ranging.

3. The experimental ultrasonic radar tooling fixture according to claim 2, characterized in that, The ultrasonic radar includes a radar body, a transmitting part and a connecting part disposed on the radar body. The radar body is cylindrical and has at least one protrusion on its outer peripheral surface. The groove on the fixing block is an arc-shaped groove adapted to the radar body. The groove wall is provided with at least one slot. When the radar body of the ultrasonic radar is placed in the groove, at least one of the protrusions is inserted into at least one of the slots.

4. The experimental ultrasonic radar tooling fixture according to claim 1, characterized in that, The second fixing position includes an annular boss protruding from the second side of the bracket body. A through hole adapted to the ultrasonic radar is formed in the annular boss. The through hole extends to the first side of the bracket body. The ultrasonic radar is inserted into and fixed in the through hole with its emitting surface facing the bracket body.

5. The experimental ultrasonic radar tooling fixture according to claim 4, characterized in that, The ultrasonic radar includes a radar body, a transmitting part, and a connecting part; the transmitting part is located at one end of the radar body in the axial direction and is coaxially arranged with the radar body, and the end face of the free end of the transmitting part forms the transmitting surface; the connecting part is located at the other end of the radar body in the axial direction and extends along the radial direction of the radar body. The annular boss has a limiting groove on one end face away from the bracket body. The radar body is inserted into the through hole with the emitting part facing the absorbing layer, and the emitting surface of the emitting part is in close contact with the absorbing layer. The connecting part is positioned in the limiting groove.

6. The experimental ultrasonic radar tooling fixture according to claim 5, characterized in that, The tooling fixture also includes an elastic washer, which is sleeved on the outside of the radar body and tightly fitted with the wall of the through hole.

7. The experimental ultrasonic radar tooling fixture according to claim 1, characterized in that, The support body is plate-shaped and has a first side and a second side opposite to the first side. The first side is flat, and the wave-absorbing layer is attached to the first side.

8. The experimental ultrasonic radar tooling fixture according to claim 1, characterized in that, The microwave absorbing layer includes a sound-absorbing cotton layer, a wool pad layer, or a microwave absorbing foam layer.

9. The experimental ultrasonic radar tooling fixture according to claim 1, characterized in that, The bracket body, the first fixing position, and the plurality of second fixing positions are an integral structure; and / or The support body, the first fixing position, and the plurality of second fixing positions are all made of polylactic acid resin.

10. The experimental ultrasonic radar tooling fixture according to claim 1, characterized in that, The bracket body is semi-circular, with the first fixing position located close to the center of the semi-circle. Multiple second fixing positions form two arcs, with the centers of the two arcs and the center of the semi-circle concentric; and / or The experimental ultrasonic radar tooling fixture also includes an auxiliary frame, which is semi-circular and coplanar with the support body, and the center of the auxiliary frame coincides with the center of the support body.

Images