RADAR sensor, system for automatic optical inspection and procedures

Abstract

A radar sensor (300) for a vehicle comprises a frame (200) that can be attached to the vehicle and a radar housing (100) that includes a radar antenna (102) and a radome (104) and that can be inserted into the frame (200). A snap-fit ​​connection is formed between the frame (200) and the radar housing (100) when the radar housing (100) is inserted into the frame (200) as intended. The frame (200) and the radar housing (100) each have a first rib (106, 206) whose longitudinal axes (L1, L2) are aligned when the radar housing (100) is inserted into the frame (200) as intended.

Description

[0001] The invention relates to a radar sensor for a vehicle. The invention further relates to a system for the automatic optical inspection of the radar sensor and a method for the visual inspection of the radar sensor.

[0002] Vehicle radar sensors can detect the distances and speeds of objects in the vehicle's surroundings. This information is used to control driver assistance systems such as adaptive cruise control and emergency braking. Radar sensors must be installed correctly to function properly. An incorrectly installed radar sensor may fail to detect objects accurately. Furthermore, an improperly installed radar sensor can become detached during operation.

[0003] From WO 2023 / 025499 A1, a mounting device for a vehicle's environmental sensor is known. The mounting device and the environmental sensor each include alignment elements arranged to ensure that the environmental sensor is mounted as intended.

[0004] German patent application DE 10 2018 103 803 A1 discloses a method for detecting a faulty sensor installation within a vehicle. The method compares a current object position with an expected object position to detect whether an object detection sensor is incorrectly installed in the vehicle.

[0005] Furthermore, DE 10 2021 004 633 A1 discloses a method for monitoring the correct installation of a bicycle carrier on the rear of a vehicle. In this method, a camera image generated by a camera that captures the area behind the vehicle is evaluated.

[0006] Further technological background information is revealed in DE 10 2006 054 325 A1, DE 10 2022 117 484 A1 and DE 10 2021 129 174 B3.

[0007] The object of the invention is to provide a RADAR sensor, a system and a method that make it possible to easily determine whether the RADAR sensor has been mounted correctly.

[0008] This problem is solved by a device having the features of claim 1 and by the subject matter of the dependent claims. Advantageous embodiments are specified in the dependent claims.

[0009] The proposed radar sensor for a vehicle comprises a frame that can be attached to the vehicle and a radar housing, which includes a radar antenna and a radome and can be inserted into the frame. A snap-fit ​​connection is formed between the frame and the radar housing when the radar housing is properly inserted into the frame. Both the frame and the radar housing have a first rib whose longitudinal axes are aligned when the radar housing is properly inserted into the frame.

[0010] The vehicle is, in particular, a motor vehicle, such as a passenger car, truck, van, or bus. To mount the radar sensor on the vehicle, the frame is attached to the vehicle's body or body panel, and the radar housing is inserted into the frame. Once the radar housing is correctly inserted into the frame, the locking connection between the two elements is formed, and the radar sensor is properly mounted. This allows the radar sensor to detect correctly during vehicle operation, and there is no risk of the radar housing becoming detached. When the radar sensor is correctly mounted, the longitudinal axes of the first ribs of the frame and the radar housing are aligned.The proposed radar sensor makes it particularly easy to visually confirm that it has been correctly installed, for example, manually by a technician or automatically with the help of a camera. The proposed radar sensor thus makes it easy to determine whether the radar sensor has been installed correctly.

[0011] In one embodiment, the frame and the radar housing each have second ribs whose longitudinal axes are aligned when the radar housing is correctly inserted into the frame. For example, the longitudinal axis of the second rib of the frame is perpendicular to the longitudinal axis of the first rib of the frame, and the longitudinal axis of the second rib of the radar housing is perpendicular to the longitudinal axis of the first rib of the radar housing. The second ribs complement the first ribs. Incorrect mounting of the radar sensor could, for example, consist of the radar housing being inserted at an angle about the longitudinal axis of one of the first ribs. Such incorrect mounting might not be detected using only the first ribs, as it is possible that the longitudinal axes of the first ribs are aligned despite the incorrect mounting. However, the second ribs can detect such incorrect mounting.The second ribs thus make it possible to determine particularly reliably whether the RADAR sensor has been mounted correctly.

[0012] In another embodiment, the first ribs and / or the second ribs each have a colored marking along their longitudinal axis. These colored markings allow for easy identification of the ribs, simplifying assembly. The first ribs can be marked in a different color than the second ribs for easy visual differentiation. Alternatively, the first and second ribs can share the same colored marking for easy identification.

[0013] In another embodiment, the first rib of the radar housing comprises a protrusion that projects from a surface of the radar housing and has a greater extent along the longitudinal axis of the first rib than perpendicular to it. Alternatively or additionally, the second rib of the radar housing comprises a protrusion that projects from the surface of the radar housing and has a greater extent along the longitudinal axis of the second rib than perpendicular to it. For example, the first rib and / or the second rib of the radar housing can be formed by a protrusion on the radome. The protrusion has a greater extent along its respective longitudinal axis than in the directions perpendicular to it; that is, the protrusion is longer than it is wide and high. Thus, the longitudinal axis is precisely defined by the spatial design of the protrusion and can be easily detected both visually and tactilely.This allows for easy installation and reliable verification that the RADAR sensor has been installed correctly.

[0014] In another embodiment, the radome is located on the front of the radar housing. The radar antenna is positioned facing this front. The front of the housing faces away from the vehicle when the frame is attached and the radar housing is properly installed within the frame. When the radar housing is properly installed in the frame, meaning when the radar sensor is correctly mounted, the radar antenna points away from the vehicle. For example, the radar antenna is directed towards an area in front of or behind the vehicle when the radar sensor is correctly mounted. The radome covers the radar antenna and protects it from environmental influences without interfering with the transmission and reception of radar waves.

[0015] In another embodiment, the first rib and / or the second rib of the radar housing are located on the front of the radar housing. The first rib and / or the second rib of the frame are located on the side of the frame facing away from the vehicle when the frame is attached to the vehicle. This means that the first ribs and / or the second ribs point away from the vehicle when the radar sensor is properly mounted. This ensures that the first ribs and / or the second ribs are easily visible to the installer during installation of the radar sensor. This allows for particularly simple and reliable installation of the radar sensor.

[0016] In another embodiment, the first rib of the frame includes a projection that extends from a surface of the frame and has a greater extent along the longitudinal axis of the first rib than perpendicular to it. Alternatively or additionally, the second rib of the frame includes a projection that extends from the surface of the frame and has a greater extent along its longitudinal axis than perpendicular to it. This means that the projection is longer than it is wide and high. The longitudinal axis is thus precisely defined by the spatial design of the projection and can be easily detected both visually and tactilely. This allows for simple installation and reliable verification that the radar sensor has been correctly mounted.

[0017] In another embodiment, the radar housing comprises at least one tongue that is positively engaged in a receptacle of the frame when the radar housing is inserted into the frame as intended. The tongue, in conjunction with the receptacle, can act as an alignment element, facilitating the correct mounting of the radar sensor. The positive engagement formed by the tongue and the receptacle also increases the stability of the mounted radar sensor and reduces, for example, the likelihood of the radar housing becoming detached during vehicle operation.

[0018] In another embodiment, the tongue has a colored marking that is completely concealed by the frame when the radar housing is properly inserted into the frame. For example, the colored marking is applied to the tongue in such a way that it disappears completely into the recess when the radar housing is properly inserted into the frame. Thus, the colored marking on the tongue complements the ribs, allowing for easy visual verification that the radar sensor has been correctly mounted.

[0019] The invention also relates to a system for the automatic optical inspection of the aforementioned RADAR sensor. The system comprises an image acquisition unit configured to capture an image of the RADAR sensor and generate corresponding image data, and a processing unit configured to determine, based on the image data, whether the longitudinal axes of the first ribs of the RADAR sensor are aligned, and, based on this information, to determine whether the RADAR housing is correctly inserted into the frame.

[0020] The system has the same advantages as the claimed radar sensor. In particular, the system can be further developed with features described in this document in connection with the radar sensor. Furthermore, the claimed radar sensor can be further developed with features described in this document in connection with the system.

[0021] The invention further relates to a method for the visual inspection of the aforementioned radar sensor. The method determines whether the longitudinal axes of the first ribs of the radar sensor are aligned. It is further determined that the radar housing is correctly inserted into the frame if the longitudinal axes of the first ribs of the radar sensor are aligned.

[0022] The method has the same advantages as the claimed radar sensor and system. In particular, the method can be further developed with features described in this document in connection with the radar sensor or the system. Furthermore, the claimed radar sensor and system can be further developed with features described in this document in connection with the method.

[0023] Exemplary embodiments of the invention are explained in more detail below with reference to the figures. These show: Fig. 1a a schematic side view of a RADAR housing of a RADAR sensor according to an exemplary embodiment; Fig. 1b a schematic top view of the RADAR housing according to Fig. 1a; Fig. 2a a schematic side view of a frame of the RADAR sensor according to an exemplary embodiment; Fig. 2b a schematic top view of the frame according to Fig. 2a; Fig. 3 a schematic top view of the RADAR sensor according to an exemplary embodiment in a correctly mounted state; Fig. 4 a schematic top view of the RADAR sensor according to an exemplary embodiment in an incorrectly mounted state; Fig. 5 a schematic top view of the RADAR sensor according to an embodiment in a further incorrectly mounted state; Fig. 6 a schematic representation of a system for the automatic optical inspection of the RADAR sensor according to an exemplary embodiment; and Fig. 7 a flowchart of a procedure for the visual inspection of the RADAR sensor according to an exemplary embodiment.

[0024] Fig. Figure 1a shows a schematic side view of a RADAR housing 100 of a RADAR sensor 300 according to an exemplary embodiment. Fig. Figure 1b shows a schematic top view of the RADAR housing 100. The RADAR housing 100 can be inserted into a frame 200 of the RADAR sensor 300, which is described in relation to Fig. 2 is described in more detail to form the mounted RADAR sensor 300 for a vehicle.

[0025] The RADAR housing 100 comprises at least one RADAR antenna 102 and one radome 104. The RADAR antenna 102 is arranged facing away from the vehicle when the RADAR sensor 300 is mounted on the vehicle as intended. The radome 104 is arranged on the front of the RADAR housing 100 and is designed such that signals transmitted by and / or received from the RADAR antenna 102 can pass through the radome 104. Thus, the radome 104 protects the RADAR antenna 102 from environmental influences while simultaneously enabling uninterrupted signal transmission. The RADAR housing 100 can include further components as described in the Fig. 1a and Fig. 1b include elements not explicitly shown that may be required for the operation of the RADAR antenna 102, for example a signal processing unit, elements of a data link for receiving or transmitting the signals and elements of an electrical link for supplying the RADAR antenna 102 with electrical power.

[0026] The RADAR housing 100 also includes a first rib 106, which is arranged on the front of the RADAR housing 100. The longitudinal axis L1 of the first rib 106 runs in Fig. 1b purely by way of example, vertically from top to bottom. In the illustrated embodiment, the first rib 106 comprises a protrusion on a surface of the radome 104. The first rib 106 also has two colored markings 108a, 108b, which are shown in the Fig. 1a and Fig. 1b are represented by a first hatching. A first colored marking 108a is in Fig. 1b is located at the upper end of the first rib 106. A second colored marking 108b is in Fig. 1b is located at a lower end of the first rib 106.

[0027] In the illustrated embodiment, the radar housing 100 also includes a second rib 110, which is likewise arranged on the front side of the radar housing 100. The longitudinal axis L2 of the second rib 110 runs in Fig. 1b purely as an example, horizontally from left to right. The longitudinal axis L1 of the first rib 106 and the longitudinal axis L2 of the second rib 110 are thus perpendicular to each other. Like the first rib 106, the second rib 110, purely as an example, includes a raised area on the surface of the radome 104. The second rib 110 also has two colored markings 112a, 112b, which are shown in the Fig. 1a and Fig. 1b are represented by a second hatching. A first colored marking 112a is in Fig. 1b is located at the left end of the second rib 110. A second colored marking 112b is in Fig. 1b is located at the right end of the second rib 110.

[0028] The first rib 106 and the second rib 110 of the RADAR housing 100 are, as can be seen in Fig. As can be seen in Figure 1b, they are elongated, meaning they have a significantly greater extent along their longitudinal axes L1 and L2 than in directions perpendicular to them. The position of the longitudinal axes L1 and L2 can therefore be quickly grasped visually and, since the first rib 106 and the second rib 110 are each formed as elevations, also easily perceived by touch.

[0029] The RADAR housing 100 further comprises tongues 114a, 114b, 114c, which can be inserted into corresponding receptacles of the frame 200. Two of the tongues 114a, 114b are located on the surface in the Fig. 1a and Fig. 1b on the left side of the RADAR housing 100. The two tongues 114a, 114b each have a colored marking 116a, 116b, which is located in Fig. 1b are represented by a third hatching. Another tongue 114c is on the one in the Fig. 1a and Fig. 1b is located on the right side of the RADAR housing 100.

[0030] Fig. Figure 2a shows a schematic side view of the frame 200 of the RADAR sensor 300 according to an exemplary embodiment. Fig. Figure 2b shows a schematic top view of the frame 200. The frame 200 can be attached to the vehicle. For example, the frame 200 can be attached to a body or body part of the vehicle before the RADAR housing 100 is inserted into the frame 200.

[0031] The frame 200 includes an opening 202 into which the radar housing 100 can be inserted. In the illustrated embodiment, the opening 202 is designed, purely by way of example, as a through opening 202. However, the opening 202 can also be designed as a blind recess or in a different geometry. In the Fig. 2a and Fig. 2b To the left of the opening 202, two receptacles 204a, 204b are formed into which the two tongues 114a, 114b of the RADAR housing 100 can be received. When the RADAR housing 100 is inserted into the frame 200 as intended, a positive fit is formed by the two tongues 114a, 114b and the two receptacles 204a, 204b. In the Fig. 2a and Fig. 2b To the right of opening 202, a further receptacle 204c is formed, into which the further tongue 114c of the RADAR housing 100 can be received. The further receptacle 204c is directed upwards into Fig. 2a is open, so that the further tongue 114c can be inserted from above into the further receptacle 204c. If the RADAR housing 100 is inserted into the frame 200 as intended, a positive fit is also formed by the further tongue 114c and the further receptacle 204c.

[0032] The frame 200 also includes a first rib 206, whose longitudinal axis L3 in Fig. 2b purely by way of example, runs vertically from top to bottom. In the illustrated embodiment, the first rib 206 comprises a protrusion on a surface of the frame 200 that points away from the vehicle when the frame 200 is attached to the vehicle as intended. The first rib 206 also has two colored markings 208a, 208b, which are the same color as the colored markings 108a, 108b of the first rib 106 of the radar housing 100. Accordingly, the colored markings 208a, 208b are in the Fig. 2a and Fig. 2b is represented by the first hatching. A first colored marking 208a is in Fig. 2b is located above the opening 202. A second colored marking 208b is located in Fig. 2b is located below opening 202.

[0033] The frame 200 also includes, purely by way of example, a second rib 210, whose longitudinal axis L4 in Fig. 2b runs horizontally from left to right, purely as an example. Thus, the longitudinal axis L3 of the first rib 206 and the longitudinal axis L4 of the second rib 210 are perpendicular to each other. Like the first rib 206, the second rib 210, purely as an example, includes a raised area on the surface of the frame 200. The second rib 210 also has two colored markings 212a, 212b, which are the same color as the colored markings 112a, 112b of the second rib 110 of the RADAR housing 100. The colored markings 212a, 212b are therefore in the Fig. 2a and Fig. 2b is represented by the second hatching. A first colored marking 212a is in Fig. 2b is located to the left of opening 202. A second colored marking 212b is located in Fig. 1b is located to the right of opening 202.

[0034] The first rib 206 and the second rib 210 of the frame 200 are interrupted into two parts by the opening 202, as can be seen in Fig. 2b can be recognized. Each part is elongated, meaning that it has a significantly greater extent along its longitudinal axis L3, L4 than in directions perpendicular to it. The position of the longitudinal axes L3, L4 can therefore be quickly grasped visually and, since the first rib 206 and the second rib 210 are each formed as elevations, also easily perceived by touch.

[0035] Fig. Figure 3 shows a schematic top view of the RADAR sensor 300 according to an exemplary embodiment in a correctly mounted state. Fig. 3 the RADAR sensor 300 is correctly mounted, that is, the RADAR housing 100 is inserted into the frame 200 as intended.

[0036] How to in Fig. As can be seen in section 3, this means that the longitudinal axes L1, L3 of the first ribs 106, 206 and the longitudinal axes L2, L4 of the second ribs 110, 210 are each aligned. Due to the design of the first ribs 106, 206 and the second ribs 110, 210, this can be easily verified visually and tactilely. This readily confirms that the RADAR housing 100 is correctly installed in the frame 200. The color markings 108a, 108b, 208a, 208b of the first ribs 106, 206 and the color markings 112a, 112b, 212a, 212b of the second ribs 110, 210 each connect to one another, so that it can also be verified with the help of the color markings 108a, 108b, 208a, 208b, 112a, 112b, 212a, 212b that the RADAR housing 100 is inserted into the frame 200 as intended.

[0037] When the RADAR housing 100 is inserted into the frame 200 as intended, the two tongues 114a, 114b are positively engaged in the two receptacles 204a, 204b, and the further tongue 114c is positively engaged in the further receptacle 204c. This creates a snap-fit ​​connection between the frame 200 and the RADAR housing 100. As shown in Fig. As can be seen in Figure 3, the colored markings 116a, 116b of the two tongues 114a, 114b are completely obscured by the two receptacles 204a, 204b. Therefore, it can also be confirmed that the RADAR housing 100 is correctly inserted into the frame 200 if these colored markings 116a, 116b are not visible from the front.

[0038] Fig. Figure 4 shows a schematic top view of the RADAR sensor 300 according to an exemplary embodiment in an incorrectly mounted state. Fig. 4. The RADAR housing 100 is not inserted into the frame 200 as intended. The RADAR housing 100 is tilted downwards and to the right compared to its correct position. Fig. Postponed to 4.

[0039] How to in Fig. As can be seen in Figure 4, the longitudinal axes L1 and L3 of the first ribs 106 and 206, and the longitudinal axes L2 and L4 of the second ribs 110 and 210, are not aligned; they are offset from each other. This fact can be quickly and easily determined visually and tactilely by examining the design of the first ribs 106 and 206 and the second ribs 110 and 210. The colored markings 108a, 108b, 208a, and 208b of the first ribs 106 and 206, and the colored markings 112a, 112b, 212a, and 212b of the second ribs 110 and 210, are also shifted relative to each other. The two tongues 114a and 114b are not correctly depicted in the two images 204a and 204b. Therefore, the color markings 116a, 116b of the two tongues 114a, 114b are only partially obscured by the two receptacles 204a, 204b. The color markings 116a, 116b are visible from the front and this also verifies that the RADAR housing 100 is not inserted into the frame 200 as intended.

[0040] Fig. Figure 5 shows a schematic top view of the RADAR sensor 300 according to an exemplary embodiment in an incorrectly mounted state. Fig. 5, the RADAR housing is rotated 100 times from its correct position.

[0041] The longitudinal axes L1, L3 of the first ribs 106, 206 and the longitudinal axes L2, L4 of the second ribs 110, 210 are each rotated relative to each other and therefore do not lie on a straight line. This fact can be quickly and easily detected visually and tactilely by examining the design of the first ribs 106, 206 and the second ribs 110, 210. The color markings 108a, 108b, 208a, 208b of the first ribs 106, 206 and the color markings 112a, 112b, 212a, 212b of the second ribs 110, 210 are also shifted relative to each other. The two tongues 114a, 114b are not correctly positioned in the two receptacles 204a, 204b. Only those in Fig. 5 upper tongue 114a is fully included in the corresponding image. The color marking 116b of the in Fig. The lower tongue 114b is therefore only partially obscured by the receptacle 204b and can be seen from the front. This verifies that the RADAR housing 100 is not inserted into the frame 200 as intended.

[0042] Fig. Figure 6 shows a schematic representation of a system 600 for the automatic optical inspection of the RADAR sensor 300 according to an exemplary embodiment. The system 600 can be used, for example, for quality control, such as an end-of-line inspection to verify that the RADAR sensor 300 has been correctly assembled.

[0043] System 600 comprises an image acquisition unit 602, which is configured to acquire an image from the RADAR sensor 300 and to generate corresponding image data. The image acquisition unit 602 is specifically designed to acquire light in the optical and / or infrared spectrum. The image acquisition unit 602 may, in particular, be a camera that acquires a two-dimensional image. The image acquisition unit 602 may also be configured to acquire multiple successive images, i.e., an image or video sequence, and to generate corresponding image data.

[0044] The system 600 further comprises a processing unit 604, which is configured to receive and process the image data. The processing unit 604 is further configured to perform at least some steps of a procedure for the visual inspection of the RADAR sensor 300. The procedure is described below using the following examples: Fig. 7 described in more detail.

[0045] Fig. Figure 7 shows a flowchart of the procedure for the visual inspection of the RADAR sensor 300 according to an exemplary embodiment. The procedure is shown only as an example based on the one in Figure 7. Fig. The 600 system shown is explained.

[0046] The procedure is started in step S700. In the optional step S702, image data corresponding to an image of the RADAR sensor 300 is received, specifically the front face of the RADAR sensor 300. The image can, for example, be captured by the image acquisition unit 602 and transmitted to the processing unit 604. In step S704, it is determined whether the longitudinal axes L1, L3 of the first ribs 106, 206 of the RADAR sensor 300 are aligned. In the optional step S706, it is determined whether the longitudinal axes L2, L4 of the second ribs 110, 210 of the RADAR sensor 300 are aligned. In the optional step S708, it is determined whether the tongues 114a, 114b, 114c are correctly included in the corresponding images. Steps S702 to S706 can be performed simultaneously or in any order.They can be performed, for example, by the processing unit 604 based on the image data and using known image processing methods, or by a human.

[0047] In step S708, based on the information gathered in steps S702 to S706, it is determined whether the RADAR housing 100 is correctly inserted into the frame 200. The procedure is then completed in step S710. Reference symbol list 100 radar housings 102 RADAR antenna 104 Radome 106 rib 108a, 108b color marking 110 rib 112a, 112b color marking 114a, 114b, 114c Tongue 116a, 116b colour marking 200 frames 202 Opening 204a, 204b, 204c recording 206 rib 208a, 208b color marking 210 rib 212a, 212b colour marking 300 RADAR sensor 600 System 602 Image capture unit 604 processing unit L1, L2, L3, L4 Longitudinal axis

Claims

[1] RADAR sensor (300) for a vehicle, with a frame (200) that can be attached to the vehicle, and a RADAR housing (100) comprising a RADAR antenna (102) and a radome (104) which can be inserted into the frame (200), wherein a snap-fit ​​connection is formed between the frame (200) and the RADAR housing (100) when the RADAR housing (100) is inserted into the frame (200) as intended, and wherein the frame (200) and the RADAR housing (100) each have a first rib (106, 206) whose longitudinal axes (L1, L3) lie on a line when the RADAR housing (100) is inserted into the frame (200) as intended. [2] The RADAR sensor (300) according to claim 1, wherein the frame (200) and the RADAR housing (100) each have second ribs (110, 210) whose longitudinal axes (L2, L4) lie on a line when the RADAR housing (100) is inserted into the frame (200) as intended. [3] The RADAR sensor (300) according to claim 2, wherein the longitudinal axis (L4) of the second rib (210) of the frame (200) is perpendicular to the longitudinal axis (L3) of the first rib (206) of the frame (200) and the longitudinal axis (L2) of the second rib (110) of the RADAR housing (100) is perpendicular to the longitudinal axis (L1) of the first rib (106) of the RADAR housing (100). [4] The RADAR sensor (300) according to one of the preceding claims, wherein the first ribs (106, 206) and / or the second ribs (110, 210) each have a colour marking (108a, 108b, 112a, 112b, 208a, 208b, 212a, 212b) along the longitudinal axis (L1, L2, L3, L4). [5] The RADAR sensor (300) according to any one of the preceding claims, wherein the first rib (106) of the RADAR housing (100) comprises a projection extending from a surface of the RADAR housing (100) and having a greater extent along the longitudinal axis (L1) of the first rib (106) of the RADAR housing (100) than perpendicular to it; and / or wherein the second rib (110) of the RADAR housing (100) comprises a projection extending from the surface of the RADAR housing (100) and having a greater extent along the longitudinal axis (L2) of the second rib (110) of the RADAR housing (100) than perpendicular to it. [6] The RADAR sensor (300) according to one of the preceding claims, wherein the radome (104) is arranged on a front side of the RADAR housing (100), the RADAR antenna (102) is arranged in the direction of the front side and the front side is turned away from the vehicle when the frame (200) is attached to the vehicle and the RADAR housing (100) is inserted into the frame (200) as intended. [7] The RADAR sensor (300) according to claim 6, wherein the first rib (106) and / or the second rib (110) of the RADAR housing (100) are formed on the front of the RADAR housing (100) and the first rib (206) and / or the second rib (210) of the frame (200) are formed on a side of the frame (200) facing away from the vehicle when the frame (200) is attached to the vehicle. [8] The RADAR sensor (300) according to any of the preceding claims, wherein the first rib (206) of the frame (200) comprises a protrusion that projects from a surface of the frame (200) and has a greater extent along the longitudinal axis (L3) of the first rib (206) of the frame (200) than perpendicular to it; and / or wherein the second rib (210) of the frame (200) comprises a protrusion that projects from the surface of the frame (200) and has a greater extent along the longitudinal axis (L4) of the second rib (210) of the frame (200) than perpendicular to it. [9] The RADAR sensor (300) according to any of the preceding claims, wherein the RADAR housing (100) comprises at least one tongue (114a, 114b, 114c) which is positively received in a receptacle (204a, 204b, 204c) of the frame (200) when the RADAR housing (100) is inserted into the frame (200) as intended. [10] The RADAR sensor (300) according to claim 9, wherein the tongue (114a, 114b, 114c) has a colour marking (116a, 116b, 116c) which is completely covered by the frame (200) when the RADAR housing (100) is inserted into the frame (200) as intended. [11] System (600) for the automatic optical inspection of the RADAR sensor (300) according to one of the preceding claims, comprising an image acquisition unit (602) configured to capture an image of the RADAR sensor (300) and to generate image data corresponding to the image, and a processing unit (604) configured to determine, on the basis of the image data, whether the longitudinal axes (L1, L3) of the first ribs (106, 206) of the RADAR sensor (300) are aligned, and, on the basis of this information, to determine whether the RADAR housing (100) is correctly inserted into the frame (200). [12] Method for visual inspection of the RADAR sensor (300) according to any one of claims 1 to 10, in which it is determined whether the longitudinal axes (L1, L3) of the first ribs (106, 206) of the RADAR sensor (300) are on a line, and it is determined that the RADAR housing (100) is correctly inserted into the frame (200) if the longitudinal axes (L1, L3) of the first ribs (106, 206) of the RADAR sensor (300) are on a line.

Images