Bumper for radar detection calibration and preparation method thereof, radar detection calibration method

Abstract

The present application relates to a bumper for radar detection calibration, a preparation method thereof, and a radar detection calibration method. The bumper is provided with a radar detection portion corresponding to the spatial detection range of the detection radar. The radar detection portion is made of mass-produced standard materials, and at least part of the structure of the bumper other than the radar detection portion is different from the mass-produced standard materials. Since the radar detection portion corresponding to the detection range of the detection radar is made of mass-produced standard materials, the detection radar can smoothly carry out the detection and calibration process. At the same time, since the structure of the bumper other than the radar detection portion is made of non-mass-produced standard materials, the manufacturing difficulty and material cost of the bumper are effectively reduced. The bumper provided by this solution has a shorter production cycle and lower processing cost, and ultimately, this solution can complete the functional verification of the detection radar and the calibration of related parameters on the engineering prototype vehicle at a lower cost and in a shorter cycle.

Description

Technical Field

[0001] The present application relates to the field of vehicle production technology, and in particular to a bumper for radar detection and calibration, a preparation method thereof, and a radar detection and calibration method. Background Art

[0002] During the vehicle development process, the development of intelligent driving functions requires the production of engineering prototypes in the soft model stage for function debugging and calibration of various parameters.

[0003] When verifying the functions and calibration effects of the front and rear detection radars of intelligent driving vehicles in the soft prototype stage, the energy loss rate requirements of the detection radar signals when penetrating the front and rear bumpers must be met. At this time, the integrated front and rear bumper skins have not yet entered the mass production stage. Therefore, it is necessary to use mass production materials for the first trial production of the front and rear bumpers. After the front and rear bumpers are obtained through injection molding, the relevant verification of the detection radar can be carried out.

[0004] However, the overall mold and material costs of the front and rear bumpers are high, and the production cycle is long, making this solution unable to meet the needs of vehicle development and needs further improvement. Summary of the Invention

[0005] The embodiments of the present application provide a bumper for radar detection calibration, a preparation method thereof, and a radar detection calibration method, so as to solve the problem in related technologies that before verifying the detection radar function and calibration effect, it is necessary to first use mass-produced materials to trial-produce the vehicle's bumper skin, which leads to high costs and long cycles.

[0006] To achieve the above objectives, in a first aspect, the present application provides a bumper for radar detection and calibration, which adopts the following scheme:

[0007] A bumper for radar detection calibration of an engineering prototype vehicle has a radar detection portion provided on the bumper corresponding to the spatial detection range of the detection radar. The radar detection portion is made of mass production standard materials, and at least part of the structure of the bumper other than the radar detection portion is different from the mass production standard material.

[0008] Through the above solution, when testing and calibrating the radars in the front and rear bumpers of the engineering prototype, the bumper provided by this application can be installed on the engineering prototype vehicle. Since the radar detection part corresponding to the detection range of the detection radar is made of mass-produced standard materials, the detection radar can smoothly carry out the detection and calibration process. At the same time, since the structure of the bumper other than the radar detection part is made of non-mass-produced standard materials, the manufacturing difficulty and material cost of the bumper are effectively reduced. Compared with the bumper skin that needs to be injection-molded using mass-produced standard materials in the related art, this solution only needs to use a small amount of mass-produced materials to make the radar cover. Moreover, since the bumper is only used for testing at this time, there are more choices for its manufacturing materials, which has a shorter production cycle and lower processing costs. Ultimately, this solution can complete the functional verification of the detection radar and the calibration of related parameters on the engineering prototype vehicle at a lower cost and in a shorter cycle.

[0009] In some embodiments, the bumper includes:

[0010] A bumper body having a radome cover opening formed thereon, wherein the bumper body is made of materials that are all different from standard production materials;

[0011] A radar cover is arranged in the radar cover opening. The radar cover is made of mass production standard materials and forms the radar detection part on the bumper body.

[0012] Through the above solution, the material cost of the bumper body can be further reduced, and rapid injection molding thereof can be facilitated.

[0013] In some embodiments, each corner of the radar cover opening is chamfered, each corner of the peripheral side of the radar cover is chamfered corresponding to the radar cover opening, and each structural edge on the radar cover is chamfered.

[0014] Through the above scheme, since the radar signal of the detection radar will attenuate when it comes to sharp structures, based on this, the edge structural features of the radar cover are chamfered to make its features smoother, ensuring that the radar wave of the detection radar acts more smoothly on the radar cover, making the detection and calibration results of the engineering prototype vehicle accurate and effective.

[0015] In some embodiments, the front and rear surfaces of the radome are coplanar with the front and rear surfaces of the bumper body.

[0016] Through the above scheme, the radar cover and bumper used for detection in this scheme can achieve an overall effect that is basically consistent with the integrated bumper skin after mass production after installation, thereby achieving a more accurate and effective detection result.

[0017] In some embodiments, the bumper body is made of resin material.

[0018] Through the above solution, the material cost of the front bumper and the rear bumper is effectively reduced, thereby achieving control over the cost of the overall solution. At the same time, the cycle of resin material injection molding is shorter, so that the overall cycle of implementation of this solution will be further shortened.

[0019] In some embodiments, the radome cover is glued and fixed to the bumper body.

[0020] Through the above solution, the radar cover can be installed on the bumper more quickly and simply, thereby shortening the cycle of the overall solution, which has strong practical significance.

[0021] In some embodiments, the bumper includes a front bumper and a rear bumper, and the radar detection unit is provided on both the front bumper and the rear bumper corresponding to the detection radar.

[0022] Through the above scheme, this scheme only needs to obtain the front bumper and the rear bumper parts on the bumper body, further reducing the overall material consumption of the bumper. In addition, the split front bumper and the rear bumper can not only be carried out simultaneously when they are injection molded separately, but also have a shorter production cycle and lower processing cost, thereby ultimately further reducing the production cycle and processing cost of the overall bumper.

[0023] In a second aspect, the present application provides a method for preparing a bumper for radar detection calibration as described above, using the following scheme:

[0024] A method for preparing a bumper for radar detection calibration comprises the following steps:

[0025] Obtaining the size and position of the cover installation area on the bumper based on the spatial detection range of the selected detection radar and the positional relationship between the detection radar and the bumper;

[0026] Determining the position and shape of the radome cover opening according to the size and position of the cover installation area on the bumper;

[0027] The bumper body and the radome are manufactured according to the position and shape of the radome cover opening, and the radome is manufactured using mass production standard materials, and at least a portion of the bumper body is manufactured using non-mass production standard materials;

[0028] The radome is installed on the radome cover opening on the bumper body.

[0029] Through the above scheme, after performing relevant calculations, the relevant information of the radome cover opening and the radome cover on the bumper is determined, so that the bumper body and radome cover that can be put into use can be quickly and accurately manufactured, and combined to form a bumper for radar detection and calibration, which can be used for radar detection and calibration of engineering prototype vehicles, ensuring that the required bumper has a short production cycle and can have accurate detection and calibration effects during use.

[0030] In some embodiments, the step of obtaining the size and position of the cover installation area on the bumper based on the spatial detection range of the selected detection radar and the positional relationship between the detection radar and the bumper includes the following steps:

[0031] Determine the installation positions of the detection radar and the bumper on the engineering prototype vehicle;

[0032] Expand the field of view of the detection radar in the horizontal and vertical directions to both sides to obtain a safe detection range;

[0033] According to the safety detection range, the size and position of the cover installation area formed by the safety detection range on the bumper are obtained.

[0034] Through the above scheme, after obtaining the spatial detection range of the detection radar, the safety detection range that includes it is obtained based on it, and the cover installation area formed on the bumper is determined using the safety detection range. This can effectively ensure that the cover installation area and the radar cover corresponding to the cover installation area in subsequent steps can effectively cover the detection range of the detection radar, thereby ensuring the smooth detection and calibration of the engineering prototype vehicle and the detection radar.

[0035] In a third aspect, the present application provides a radar detection calibration method for calibrating the front and rear radars of an engineering prototype vehicle, using the following scheme:

[0036] The radar detection calibration method includes the following steps:

[0037] The bumper is prepared according to the method for preparing a bumper for radar detection calibration of an engineering prototype vehicle as described above;

[0038] Assembling the detection radar and the bumper on the engineering prototype vehicle;

[0039] The engineering prototype vehicle is calibrated based on the detection radar and the bumper.

[0040] This solution, through the production of a bumper for radar calibration on an engineering prototype vehicle, avoids the need for injection molding mass-produced standard bumpers using standard materials. This allows for lower costs and shorter testing cycles for the calibration of front and rear radars on engineering prototype vehicles. Ultimately, this effectively reduces costs in the automotive R&D and production process, benefiting industry development.

[0041] The beneficial effects of the technical solution provided by this application include:

[0042] The embodiment of the present application provides a bumper for radar detection and calibration, a preparation method thereof, and a radar detection and calibration method. When performing detection and calibration of the radars in the front and rear bumpers of an engineering prototype, the bumper provided by this application can be installed on the engineering prototype vehicle. Since the radar detection portion corresponding to the detection range of the detection radar is made of mass-produced standard materials, the detection radar can smoothly carry out the detection and calibration process. At the same time, since the bumper structure other than the radar detection portion is made of non-mass-produced standard materials, the manufacturing difficulty and material cost of the bumper are effectively reduced. Compared with the bumper skin obtained by injection molding using mass-produced standard materials in related technologies, the bumper provided by this solution has a shorter production cycle and lower processing cost. Ultimately, this solution can complete the functional verification of the detection radar and the calibration of related parameters on the engineering prototype vehicle at a lower cost and in a shorter cycle.

[0043] At the same time, when manufacturing the aforementioned bumper, relevant information about the radome cover opening and the radome cover on the bumper can be determined after performing relevant calculations, so that a usable bumper body and radome cover can be quickly and accurately manufactured. These can then be combined to form a bumper for radar detection and calibration, which can be used when conducting radar detection and calibration on engineering prototype vehicles. This ensures that the required bumper has a short production cycle and can achieve accurate detection and calibration results during use.

[0044] Finally, when it is necessary to test and calibrate the bumper detection radar on an engineering prototype vehicle, the manufactured bumper for engineering prototype vehicle radar detection and calibration can avoid the use of mass production standard materials for injection molding to obtain a mass production standard bumper. The overall process of detection and calibration of the front and rear bumper detection radars of the engineering prototype vehicle can be achieved with lower costs and shorter detection cycles, effectively reducing costs in the automobile R&D and production process, which is beneficial to the development of the industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0046] Figure 1 A schematic diagram of the bumper structure provided in an embodiment of the present application;

[0047] Figure 2 A flowchart of the steps of the method for preparing a bumper for radar detection calibration of an engineering prototype vehicle provided in an embodiment of the present application;

[0048] Figure 3 This is a flowchart of step S100 in the method for preparing a bumper for radar detection and calibration of an engineering prototype vehicle;

[0049] Figure 4 This is a calculation diagram of step S100 in the method for preparing a bumper for radar detection calibration of an engineering prototype vehicle;

[0050] Figure 5 Flowchart of the steps for radar detection and calibration method. Description of the drawings:

[0052] 1. Bumper body; 10. Radome cover;

[0053] 2. Radar cover;

[0054] a. Spatial detection range;

[0055] b. Safety detection range;

[0056] c. Cover installation area. DETAILED DESCRIPTION

[0057] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0058] During the vehicle development process, the development of intelligent driving functions requires the production of engineering prototypes in the soft model stage for function debugging and calibration of various parameters.

[0059] When verifying the functions and calibration effects of the front and rear detection radars of intelligent driving vehicles in the soft prototype stage, the energy loss rate requirements of the detection radar signals when penetrating the front and rear bumpers must be met. At this time, the integrated front and rear bumper skins have not yet entered the mass production stage. Therefore, it is necessary to use mass production materials for the first trial production of the front and rear bumpers. After the front and rear bumpers are obtained through injection molding, the relevant verification of the detection radar can be carried out.

[0060] However, the overall mold and material costs of the front and rear bumpers are high, and the production cycle is long, making this solution unable to meet the needs of vehicle development.

[0061] Therefore, the embodiments of the present application provide a bumper for radar detection calibration and a preparation method thereof, as well as a radar detection calibration method, to solve the above-mentioned problems.

[0062] In a first aspect, an embodiment of the present application provides a bumper for radar detection calibration.

[0063] Reference Figure 1 A bumper for radar detection calibration, wherein a radar detection part is provided on the bumper corresponding to the spatial detection range a of the detection radar, the radar detection part is made of mass-produced standard materials, and at least part of the structure of the bumper other than the radar detection part is different from the mass-produced standard materials.

[0064] With this arrangement, when testing and calibrating the radars in the front and rear bumpers of an engineering prototype, the bumper provided by this application can be installed on the prototype vehicle. Because the radar detection unit corresponding to the detection range of the detection radar is made of mass-produced standard materials, the detection radar can smoothly carry out the testing and calibration process. Furthermore, because the bumper structure other than the radar detection unit is made of non-mass-produced standard materials, the manufacturing difficulty and material cost of the bumper are effectively reduced. Compared to the related art bumper skins that require injection molding of mass-produced standard materials, this solution has a shorter production cycle and lower processing costs. Ultimately, this solution can complete the functional verification of the detection radar and the calibration of related parameters on the engineering prototype vehicle at a lower cost and in a shorter cycle.

[0065] Furthermore, the bumper includes:

[0066] The bumper body 1 has a radome cover 10 formed thereon, and the materials used to make the bumper body 1 are all different from the standard materials used in mass production;

[0067] The radome cover 2 is disposed in the radome cover opening 10 . The radome cover 2 is made of mass-produced standard materials and forms the radar detection portion on the bumper body 1 .

[0068] The bumper body 1 of this embodiment is made of materials that are all different from standard mass-produced materials, further reducing the material cost of the bumper body 1 while facilitating rapid injection molding. In other embodiments, materials can be selectively used in different parts of the bumper as needed to facilitate bumper processing and manufacturing.

[0069] Optionally, each corner of the radar cover opening 10 is chamfered, each corner of the peripheral side of the radar cover 2 is chamfered corresponding to the radar cover opening 10, and each structural edge on the radar cover 2 is chamfered.

[0070] With this arrangement, since the radar signal of the detection radar will attenuate when it comes to sharp structures, the edge structural features of the radar cover 2 are chamfered to make its features smoother, ensuring that the radar waves of the detection radar act more smoothly on the radar cover 2, making the detection and calibration results of the engineering prototype vehicle accurate and effective.

[0071] Furthermore, the front and rear surfaces of the radome cover 2 are coplanar with the front and rear surfaces of the bumper body 1 .

[0072] With this arrangement, the radar cover 2 and the bumper used for detection in this solution can have an overall effect that is basically consistent with the integrated bumper skin after mass production after installation, thereby achieving a more accurate and effective detection result in the present solution.

[0073] Furthermore, the bumper body 1 is made of resin material.

[0074] In this embodiment, the bumper body 1 is made of Heicast 8150 resin. A silicone mold can be used for the bumper injection molding. In other embodiments, other resins or other materials can be used. This is to ensure that the material cost and injection molding cycle are both shorter than those of standard materials for mass production of bumpers.

[0075] This arrangement effectively reduces the material cost of the bumper, thereby controlling the cost of the overall solution. At the same time, the injection molding cycle of the resin material is shorter, so that the overall cycle of implementation of this solution will be further shortened.

[0076] Furthermore, the radome cover 2 and the bumper body 1 are glued and fixed.

[0077] This arrangement enables the radar cover 2 to be installed on the bumper more quickly and simply, thereby shortening the cycle of the overall solution, which has strong practical significance.

[0078] Furthermore, the bumper includes a front bumper and a rear bumper, and the radar detection part is provided on the front bumper and the rear bumper corresponding to the detection radar.

[0079] With this arrangement, only the front bumper and rear bumper parts need to be obtained during the preparation of the bumper body 1, further reducing the overall bumper consumables, and the split front bumper and rear bumper can not only be carried out simultaneously when they are injection molded separately, but also have a shorter production cycle and lower processing cost, ultimately further reducing the production cycle and processing cost of the overall bumper.

[0080] In a second aspect, an embodiment of the present application provides a method for preparing a bumper for radar detection calibration, comprising the following steps:

[0081] Reference Figure 2 A method for preparing a bumper for radar detection calibration comprises the following steps:

[0082] S100, obtaining the size and position of the cover installation area c on the bumper based on the spatial detection range a of the selected detection radar and the positional relationship between the detection radar and the bumper;

[0083] S200, determining the position and shape of the radome cover opening 10 according to the size and position of the cover installation area c on the bumper;

[0084] S300, manufacturing the bumper body 1 and the radome cover 2 according to the position and shape of the radome cover opening 10, using mass production standard materials to manufacture the radome cover 2, and using non-mass production standard materials to manufacture at least a portion of the bumper body 1;

[0085] S400 , installing the radome cover 2 on the radome cover opening 10 on the bumper body 1 .

[0086] In this embodiment, steps S100 and S200 are both performed on a computer using the three-dimensional data of the engineering prototype vehicle, bumper, and detection radar to perform modeling and calculations. It is understood that in other embodiments, any other means for calculating relevant data may be used.

[0087] With this arrangement, relevant information of the radome cover opening 10 and the radome cover 2 on the bumper is determined after relevant calculations are performed, so that the bumper body 1 and the radome cover 2 that can be put into use can be quickly and accurately manufactured, and combined to form a bumper for radar detection and calibration, which can be used for radar detection and calibration of engineering prototype vehicles, thereby ensuring that the required bumper has a shorter production cycle and can have accurate detection and calibration effects during use.

[0088] Alternatively, refer to Figure 3 and Figure 4 Step S100, obtaining the size and position of the cover installation area c on the bumper according to the spatial detection range a of the selected detection radar and the positional relationship between the detection radar and the bumper, includes the following steps:

[0089] S110, determining installation positions of the detection radar and the bumper on the engineering prototype vehicle;

[0090] S120, expanding the field of view angles of the detection radar's spatial detection range a in the horizontal and vertical directions to both sides to obtain a safe detection range b;

[0091] S130 : Obtain the size and position of the cover installation area c formed by the safety detection range b on the bumper according to the safety detection range b.

[0092] It should be noted that when the detection radar is installed on a prototype vehicle for functional verification and parameter calibration, it must maintain both vertical and horizontal fields of view to ensure that the radar's field of view is maintained. This ensures that the subsequently recorded data is usable. Therefore, in step S120, the horizontal and vertical fields of view of the detection radar's spatial detection range a are expanded to obtain a safety detection range b. The vertical expansion of the safety detection range b from the spatial detection range a represents the expansion of the detection radar's maximum field of view in both the vertical and horizontal directions. In this embodiment, the vertical expansion of the safety detection range b from the spatial detection range a ensures that the vertical area formed on the bumper is expanded by at least 25 mm, and the horizontal expansion ensures that the horizontal area formed on the bumper is expanded by at least 50 mm.

[0093] With this arrangement, after obtaining the spatial detection range a of the detection radar, the safety detection range b that includes it is obtained based on it, and the cover installation area c formed on the bumper is determined using the safety detection range b. This can effectively ensure that the cover installation area c and the radar cover 2 corresponding to the cover installation area c in subsequent steps can effectively cover the detection range of the detection radar, thereby ensuring the smooth detection and calibration of the engineering prototype vehicle and the detection radar.

[0094] On the third aspect, an embodiment of the present application provides a radar detection and calibration method for detecting and calibrating the front and rear interior protection radars of an engineering prototype vehicle.

[0095] Reference Figure 3 , a radar detection calibration method, comprising the following steps:

[0096] S100, preparing a bumper for radar detection and calibration of an engineering prototype vehicle according to the method for preparing the bumper as described above;

[0097] S200, assembling the detection radar and the bumper on the engineering prototype vehicle;

[0098] S300: calibrate the engineering prototype vehicle based on the detection radar and the bumper.

[0099] This solution, by manufacturing a bumper for radar calibration on an engineering prototype vehicle, avoids the need to use standard production materials for injection molding to produce a standard bumper. This allows for lower costs and shorter testing cycles for the calibration of front and rear radars on engineering prototype vehicles. Ultimately, this effectively reduces costs in the automotive R&D and production process, benefiting industry development.

[0100] The working principle and beneficial effects of the radar detection calibration method for the front and rear bumpers of an engineering prototype vehicle provided in this application are as follows:

[0101] When testing and calibrating the radars in the front and rear bumpers of an engineering prototype, the bumper provided by this application can be installed on the engineering prototype. Since the radar detection unit corresponding to the detection range of the detection radar is made of mass-produced standard materials, the detection radar can smoothly carry out the detection and calibration process. At the same time, since the bumper structure other than the radar detection unit is made of non-mass-produced standard materials, the manufacturing difficulty and material cost of the bumper are effectively reduced. Compared with the bumper skin that requires injection molding of mass-produced standard materials in related technologies, this solution has a shorter production cycle and lower processing costs. Ultimately, this solution can complete the functional verification of the detection radar and the calibration of related parameters on the engineering prototype at a lower cost and in a shorter cycle.

[0102] At the same time, when manufacturing the above-mentioned bumper, relevant information of the radome cover opening 10 and the radome cover 2 on the bumper can be determined after performing relevant calculations, so that the bumper body 1 and the radome cover 2 that can be put into use can be quickly and accurately manufactured, and combined to form a bumper for radar detection and calibration, which can be used for radar detection and calibration of engineering prototype vehicles, thereby ensuring that the required bumper has a short production cycle and can achieve accurate detection and calibration effects during use;

[0103] Finally, when it is necessary to test and calibrate the bumper detection radar on an engineering prototype vehicle, the manufactured bumper for engineering prototype vehicle radar detection and calibration can avoid the use of mass production standard materials for injection molding to obtain a mass production standard bumper. The overall process of detection and calibration of the front and rear bumper detection radars of the engineering prototype vehicle can be achieved with lower costs and shorter detection cycles, effectively reducing costs in the automobile R&D and production process, which is beneficial to the development of the industry.

[0104] In the description of this application, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0105] It should be noted that, in this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0106] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. Bumper for radar detection and calibration of engineering prototype vehicles, characterized by: The bumper is provided with a radar detection portion corresponding to the spatial detection range (a) of the detection radar, the radar detection portion is made of mass-produced standard materials, and at least part of the structure of the bumper other than the radar detection portion is different from the mass-produced standard materials; The bumper comprises: A bumper body (1) is provided with a radome cover opening (10), wherein the materials used to make the bumper body (1) are all different from standard materials for mass production; A radar cover (2) is arranged in the radar cover opening (10), the radar cover (2) is made of mass production standard material and forms the radar detection portion on the bumper body (1); Each corner of the radome cover opening (10) is configured as a chamfered corner, each corner of the peripheral side of the radome cover (2) is configured as a chamfered corner corresponding to the radome cover opening (10), and the inner structural edges of the radome cover (2) are configured as chamfered corners; Expanding the field of view of the detection radar's spatial detection range (a) in both horizontal and vertical directions to obtain a safety detection range (b), and determining a cover installation area (c) formed on the bumper based on the safety detection range (b); When the safety detection range (b) is expanded vertically to both sides of the spatial detection range (a), the length of the vertical area formed on the bumper is expanded by at least 25 mm, and when it is expanded horizontally to both sides, the length of the lateral area formed on the bumper is expanded by at least 50 mm.

2. The bumper for radar detection and calibration of an engineering prototype vehicle according to claim 1, characterized in that: The radome cover (2) satisfies the requirement that when it is mounted on the radome cover opening (10), its front and rear surfaces are coplanar with the front and rear surfaces of the bumper body (1).

3. The bumper for radar detection and calibration of an engineering prototype vehicle according to claim 1, characterized in that: The bumper body (1) is made of resin material.

4. The bumper for radar detection and calibration of an engineering prototype vehicle according to claim 1, characterized in that: The radome cover (2) and the bumper body (1) are glued and fixed.

5. The bumper for radar detection and calibration of an engineering prototype vehicle according to claim 1, characterized in that: The bumper includes a front bumper and a rear bumper, and the radar detection part is provided on the front bumper and the rear bumper corresponding to the detection radar.

6. The method for preparing a bumper for radar detection and calibration of an engineering prototype vehicle according to any one of claims 1 to 5, characterized in that: It includes the following steps: Determining the size and position of the cover mounting area (c) on the bumper based on the spatial detection range (a) of the selected detection radar and the positional relationship between the detection radar and the bumper; Determining the position and shape of the radar cover opening (10) according to the size and position of the cover installation area (c) on the bumper; The bumper body (1) and the radome cover (2) are manufactured according to the position and shape of the radome cover opening (10), and the radome cover (2) is manufactured using mass production standard materials, and at least a portion of the bumper body (1) is manufactured using non-mass production standard materials; The radar cover (2) is installed on the radar cover opening (10) on the bumper body (1).

7. The method for preparing a bumper for radar detection and calibration of an engineering prototype vehicle according to claim 6, characterized in that: The step of obtaining the size and position of the cover mounting area (c) on the bumper based on the spatial detection range (a) of the selected detection radar and the positional relationship between the detection radar and the bumper comprises the following steps: Determine the installation positions of the detection radar and the bumper on the engineering prototype vehicle; Expand the field of view of the detection radar's spatial detection range (a) in both the horizontal and vertical directions to obtain the safe space range; According to the safety space range, the size and position of the cover installation area (c) formed by the safety space range on the bumper are obtained.

8. A radar detection calibration method, characterized in that: The following steps are involved: The bumper is prepared according to the method for preparing a bumper for radar detection calibration of an engineering prototype vehicle as claimed in claim 7; Assembling the detection radar and the bumper on the engineering prototype vehicle; The engineering prototype vehicle is calibrated based on the detection radar and the bumper.

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