Radar angle detection device

Abstract

The invention discloses radar angle detection equipment, which comprises a horizontal module and a distance measurement module, and is characterized in that the horizontal module is connected with a radar and is used for detecting the pitch angle of the radar; the distance measuring module comprises two distance measuring sensors, the two distance measuring sensors are located on the same horizontal line and spaced by a first distance L in the first direction, the distance measuring module and the radar are arranged in a spaced mode in the second direction, and the first direction is perpendicular to the second direction. The distance between the two distance measuring sensors and the radar is measured by the two distance measuring sensors respectively, the difference between the distances measured by the two distance measuring sensors is D, and the course angle alpha of the radar is equal to Arc tan (D / L). The horizontal module is directly used for measuring the pitch angle, and then the course angle is calculated through a trigonometric function by using the distance difference value detected by two distance measuring sensors of the distance measuring module and combining the arrangement distance of the two distance measuring sensors. The radar angle detection equipment is small in overall size, suitable for internal detection of the automobile bumper and convenient to calculate numerical values.

Description

Technical Field

[0001] This invention relates to the field of inspection tool technology, and in particular to radar angle detection equipment. Background Technology

[0002] Radar is installed inside the car bumper, and it is usually necessary to check whether its pitch and yaw angles meet the requirements. Traditional dial indicators are difficult to reach inside the fixture to measure and read the values, and the calculation formulas are complex. Summary of the Invention

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a radar angle detection device that can conveniently detect the radar's pitch and heading angles and facilitate numerical calculations.

[0004] A radar angle detection device according to an embodiment of the present invention is used to measure the angle of a radar installed in a vehicle, comprising: A horizontal module, connected to the radar, is used to detect the radar's elevation angle; The ranging module includes two ranging sensors located on the same horizontal line and spaced apart by a first distance L along a first direction. The ranging module and the radar are spaced apart along a second direction, the first direction being perpendicular to the second direction. The two ranging sensors measure the distance to the radar respectively, and the difference between the distances measured by the two ranging sensors is D. The heading angle of the radar is α = Arc tan(D / L).

[0005] The radar angle detection device according to embodiments of the present invention has at least the following advantages: the pitch angle is directly measured using the horizontal module, and the heading angle is calculated using trigonometric functions by combining the distance difference detected by the two ranging sensors of the ranging module with the spacing between the two sensors. The radar angle detection device has a small overall size, making it suitable for detection inside a car bumper, and it is convenient to calculate values.

[0006] According to some embodiments of the present invention, the vehicle includes a body shell and a bracket, the bracket being mounted on the body shell, the radar including a housing, the housing being mounted on the bracket, the housing having a cavity on the side opposite to the ranging module, the horizontal module being embedded in the cavity, the housing having a back surface on the side near the ranging module, the back surface being a plane, and two ranging sensors detecting the distance between the ranging module and the back surface.

[0007] According to some embodiments of the present invention, the horizontal module is magnetically connected to the housing.

[0008] According to some embodiments of the present invention, the radar angle detection device includes a frame, the frame including a first mounting part for mounting the vehicle body and a second mounting part for mounting the ranging module, wherein after the vehicle body and the ranging module are installed, the vehicle body and the ranging module maintain a distance.

[0009] According to some embodiments of the present invention, the second mounting part includes a mounting port, a portion of the ranging module passes through the mounting port, a first lifting lug is provided on the periphery of the ranging module, and the second mounting part is provided with a connecting component for connecting the first lifting lug.

[0010] According to some embodiments of the present invention, the connecting assembly includes a first positioning post and a fixing member. The first positioning post is fixed on the second mounting portion and passes through the first lifting lug. The fixing member connects the first lifting lug and the second mounting portion to prevent the ranging module from detaching from the second mounting portion.

[0011] According to some embodiments of the present invention, the fastener is magnetically connected to the second mounting portion.

[0012] According to some embodiments of the present invention, the first mounting part includes a positioning surface and a pressing mechanism, wherein the positioning surface positions the vehicle body and the pressing mechanism is used to press the vehicle body against the positioning surface.

[0013] According to some embodiments of the present invention, the outer shell is provided with a second lifting lug, the bracket is provided with a mounting position, the mounting position is provided with a second positioning post and a snap-fit ​​part, the second lifting lug passes through the second positioning post, the snap-fit ​​part is close to both sides of the second lifting lug, and the snap-fit ​​part is engaged with the snap-fit ​​part by a buckle, thereby fixing the outer shell.

[0014] According to some embodiments of the present invention, the radar angle detection device further includes a computer and a display device. The measurement results of the ranging module are transmitted to the computer, and the computer calculates the measurement results according to the radar heading angle calculation formula and displays the measurement results on the display device.

[0015] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of the radar's elevation and heading angles; Figure 2 This is a schematic diagram of an angle detected by the radar angle detection device according to an embodiment of the present invention; Figure 3for Figure 2 A schematic diagram showing another angle detected by the radar angle detection device; Figure 4 for Figure 2 A diagram showing the car body hidden behind the shell; Figure 5 for Figure 3 A diagram showing the back of the hidden rack; Figure 6 Diagram showing the relationship between the ranging module, the horizontal module, and the radar after the ranging module is installed in the second mounting section; Figure 7 for Figure 6 An exploded view showing the structure at one angle; Figure 8 for Figure 6 An exploded view showing the structure from another angle; Figure 9 This is a schematic diagram of the ranging module's detection process. Figure 10 This is a schematic diagram showing one state in which the horizontal module and the laser module are installed on the zeroing block; Figure 11 This is a schematic diagram showing another state in which the horizontal module and the laser module are installed on the zeroing block; Figure 12 This is a schematic diagram showing another state in which the horizontal module and the laser module are installed on the zeroing block.

[0017] Figure label: 100. Radar; 101. Housing; 102. Cavity; 103. Back side; 104. Second lifting lug; 110. Bumper; 120. Body shell; 130. Bracket; 200. Frame; 210. First mounting part; 220. Second mounting part; 221. First positioning post; 222. Fixing component; 223. Mounting port; 300. Horizontal module; 400. Ranging module; 410. Ranging sensor; 420. First lifting lug; 510. Base; 520. First zeroing part; 530. Second zeroing part; 540. Pressure plate; A. Pitch angle; B. Heading angle. Detailed Implementation

[0018] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0019] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0020] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0021] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0022] Reference Figure 1 When the radar 100 is installed inside the bumper 110 of a car, it is usually necessary to detect its pitch angle A and yaw angle B to ensure the accuracy of the information detected by the radar 100. Specifically, the pitch angle A of the radar 100 refers to the rotation angle of the radar 100 about its horizontal axis, and the yaw angle B of the radar 100 refers to the rotation angle of the radar 100 about its vertical axis.

[0023] Reference Figure 2 , Figure 3 and Figure 5 In this embodiment of the invention, the radar 100 angle detection device is used by installing the radar 100 inside the bumper 110 of the car, and then installing the part of the car body 120 on which the radar 100 is installed into the radar 100 angle detection device for detection. This can accurately simulate the situation after the radar 100 is installed in the whole car, and improve the accuracy of detection.

[0024] Reference Figure 4 The radar 100 angle detection device of this invention includes a frame 200, which includes a first mounting portion 210 for mounting a vehicle body 120. It is understood that the first mounting portion 210 includes a positioning surface and a clamping mechanism. The positioning surface is used to abut against the periphery of the vehicle body 120 and / or other planes that can be used for positioning, thereby ensuring the positional accuracy of the vehicle body 120 after installation. The clamping mechanism is used to clamp the vehicle body 120 so that the vehicle body 120 cannot detach from the positioning surface, ensuring the stability of the vehicle body 120.

[0025] Reference Figures 6 to 8 The radar 100 angle detection device of this invention includes a horizontal module 300, which is connected to the radar 100 and used to detect the pitch angle A of the radar 100. The horizontal module 300 is a sensor device with angle measurement capabilities, incorporating a high-precision horizontal reference (e.g., using a high-precision tilt sensor, electronic bubble level, or gyroscope). It can very accurately sense its tilt angle relative to the direction of Earth's gravity (i.e., the horizontal plane). The horizontal module 300 is a stand-alone, installable unit, typically designed for easy integration with other devices (here, the radar 100). The horizontal module 300 is rigidly and securely mounted at a key location on the radar 100. The horizontal module 300 maintains consistency with the pitch attitude of the radar 100; that is, when the radar 100 tilts, the horizontal module 300 also tilts accordingly, enabling the horizontal module 300 to accurately detect the horizontal state of the radar 100 mounted behind the vehicle body 120, facilitating accurate measurement of the radar 100's pitch angle A. The horizontal module 300 outputs the measured angle (i.e., the radar 100 elevation angle A) in the form of an electrical signal (such as analog voltage, digital signal such as RS232 / 485, CAN bus message, etc.).

[0026] Reference Figures 6 to 9 The radar 100 angle detection device in this embodiment of the invention also includes a ranging module 400, which includes two ranging sensors 410 (laser rangefinder, ultrasonic sensor, etc.). The two ranging sensors 410 are located on the same horizontal line, that is, the two ranging sensors 410 are installed on the same horizontal line (i.e., coplanar and at the same height), to ensure that the measurement benchmark is consistent and to avoid introducing additional errors due to height difference.

[0027] Reference Figure 9Two ranging sensors 410 are spaced a first distance L along a first direction, meaning they are arranged on a horizontal plane along a fixed direction (e.g., the left-right direction of a car), and the straight-line distance between their measurement points is L. The ranging module 400 and radar 100 are spaced apart along a second direction (e.g., the front-rear direction of a car), meaning they are not adjacent but spaced apart along the second direction (there is a certain distance). The first and second directions are perpendicular, which is a key geometric constraint. The baseline direction of the two ranging sensors 410 (the first direction) is perpendicular to the direction of the line connecting the ranging module 400 to the radar 100 (the second direction). This orthogonal relationship is the basis for the subsequent simple trigonometric formulas. Each ranging sensor 410 measures its distance from the radar 100; that is, each ranging sensor 410 independently measures its own straight-line distance from the radar 100 along the second direction. One distance sensor 410 measures a distance S1, and the other distance sensor 410 measures a distance S2. The difference in distance measured by the two distance sensors 410 is D, where D = S1 - S2 (S1 ≥ S2). Figure 9 As shown, a right-angled triangle model is obtained, where the length of one right-angled side (opposite side) is D (distance difference), and the length of the other right-angled side (adjacent side) is L (distance between the two ranging sensors 410). According to trigonometric relationships, tanα = opposite side / adjacent side = D / L. Therefore, the heading angle Bα of radar 100 is Arc tan(D / L). This design, through dual-sensor layout and distance difference calculation, achieves low-cost, high-precision measurement of the heading angle B of radar 100.

[0028] The horizontal module 300 and the ranging module 400 work together to provide attitude information for the radar 100 in two key dimensions: the horizontal plane (heading angle B) and the vertical plane (pitch angle A). This is crucial for applications such as accurate orientation of the radar 100, target tracking, and attitude compensation on moving platforms (such as vehicles and ships).

[0029] Understandably, the radar 100 angle detection device also includes a computer and a display device. The measurement results from the ranging module 400 are transmitted to the computer, which calculates the measurement results according to the formula for calculating the heading angle B of the radar 100 and displays the results on the display device. The computer, as the core processing unit, receives and processes the raw data and completes the calculation of the heading angle B. The display device visualizes the calculation results, realizing the conversion from "data" to "information" for user reading. The computer and display device can also be integrated into a single device, such as a tablet computer. The measurement results from the ranging module 400 need to be transmitted to the computer via a data link, such as wired transmission (e.g., CAN bus, RS485 serial port) or wireless transmission (e.g., Wi-Fi 6, Bluetooth 5.2).

[0030] Understandably, the vehicle includes a bracket 130, which is mounted on the body shell 120. The function of the bracket 130 is to securely mount the radar 100 onto the vehicle, and it can also provide some shock absorption, leveling, or fine-tuning of the angle. (Refer to...) Figure 7 and Figure 8 The radar 100 includes a housing 101, which serves as the external protective structure for the radar 100 body. The housing 101 is mounted on a bracket 130, and the entire radar 100 is also fixed to the vehicle body 120 via the bracket 130. The side of the housing 101 facing away from the ranging module 400 has a recess 102, which is an inwardly recessed space or slot. The main functional components of the radar 100 are installed in this recess 102. When detecting angles, the main functional components of the radar 100 are moved outside the housing 101; that is, the complete radar 100 components are not installed, only the housing 101 is retained and mounted on the bracket 130, thereby reducing the overall space occupied. Furthermore, the horizontal module 300 is embedded in the recess 102, preventing the horizontal module 300 from occupying additional external mounting space as a separate component. This embedded installation allows the horizontal module 300 to be tightly integrated with the radar 100 housing 101, forming a more compact integrated unit. This reduces the number of components and simplifies assembly. Since the horizontal module 300 is rigidly embedded in the housing 101 of the radar 100, the horizontal reference it senses directly reflects the attitude of the housing 101 of the radar 100 itself (that is, the radar 100 body), and the measurement results are more direct and reliable.

[0031] Understandably, since the space between the complete radar 100 and the vehicle body 120 is quite compact after it is mounted on the bracket 130, there is not enough space to install more detection devices. In this embodiment of the invention, by removing the core electrical components of the radar 100, such as the radio frequency transceiver unit, antenna, and processing circuit, from the cavity 102, installation space is made for the horizontal module 300. The outer shell 101, mounted on the bracket 130, serves as the carrier of the radar 100. The installation angle of the outer shell 101 represents the angle of the entire radar 100, thus allowing the horizontal module 300 and the outer shell 101 to be mounted together on the vehicle body 120, simulating the real-world usage scenario of the radar 100 and obtaining more accurate data.

[0032] The housing 101 has a back surface 103 on the side near the ranging module 400. The back surface 103 is designed as a plane, and two ranging sensors 410 detect the distance between the ranging module 400 and the back surface 103. The back surface 103 is the measurement target surface for the two ranging sensors 410 in the ranging module 400. The ranging sensors 410 emit signals and receive signals reflected back from this plane, thereby accurately measuring the vertical distance from the ranging sensor 410 itself to this plane. The flat design ensures the stability and accuracy of the measurement (avoiding measurement errors caused by curved surfaces or complex shapes).

[0033] Retaining only the radar 100 housing 101 as the physical carrier and measurement reference surface of the attitude measurement system may indicate functional integration or a simplified carrier design of the radar 100 body. Utilizing the recess 102 of the housing 101 to embed the horizontal module 300, and using the back surface 103 of the housing 101 as the ranging target, with the ranging module 400 spaced apart from the housing 101 along a second direction, this design minimizes additional parts and space occupation, allowing the entire attitude measurement system to be compactly integrated into the space-constrained automotive environment.

[0034] Reference Figures 6 to 9 In some embodiments, the outer casing 101 is provided with a second lifting lug 104. The second lifting lug 104 is an ear-shaped structure protruding from the outer casing 101, with a through hole or U-shaped groove. The bracket 130 is provided with a mounting position, which is a specific structure on the bracket 130 specially designed to accommodate and fix the second lifting lug 104. Specifically, the mounting position is provided with a second positioning post and a snap-fit ​​part. The second positioning post is a rigid protruding cylinder (or conical post, square post, etc.). The second lifting lug 104 passes through the second positioning post to achieve precise positioning. The snap-fit ​​part is close to both sides of the second lifting lug 104. The snap-fit ​​part is an elastic clamping structure on the bracket 130. The design of the snap-fit ​​part needs to match the shape of the lifting lug (e.g., the width of the groove is basically equal to the thickness of the lifting lug). The initial clamping force is generated through elastic deformation to prevent the lifting lug from falling off before it is fully locked. By pressing or pushing the buckle, it is tightly fitted with the snap-fit ​​part (e.g., the buckle is engaged in the groove or slot of the snap-fit ​​part). The squeezing force of the buckle further increases the clamping force of the snap-fit ​​part on the lifting lug, and the buckle can close the slot of the snap-fit ​​part, ultimately achieving rigid fixation between the outer shell 101 and the bracket 130.

[0035] During installation, align the hole on the second lifting lug 104 of the housing 101 with the second positioning post on the mounting position of the bracket 130. Then, insert the second lifting lug 104 onto the second positioning post, meaning the second positioning post passes through the hole in the second lifting lug 104. After the second lifting lug 104 is fitted onto the second positioning post, the locking part on the mounting position will fit tightly against the left and right sides of the second lifting lug 104. Finally, a separate "clip" component is used. This clip is pressed, rotated, or pushed into a pre-set slot, hole, or boss structure on the "clip". The design of the clip and the locking part ensures that a mechanical interference or elastic deformation locking force is generated when the clip is in place. The engagement of the clip and the locking part requires no tools (or only simple tools), saving time compared to bolt connections.

[0036] Understandably, in some embodiments, the horizontal module 300 is magnetically connected to the outer shell 101. The shape and size of the recess 102 should match the horizontal module 300, serving as initial positioning and limiting to ensure that the module is roughly aligned when placed inside. Magnetic force is responsible for the final fixation and tight fit. A permanent magnet can be embedded in the horizontal module 300, and a magnetically conductive metal (such as an iron sheet) can be embedded in the corresponding position in the outer shell 101, utilizing magnetic attraction. Alternatively, permanent magnets can be embedded in both the horizontal module 300 and the outer shell 101, fixing them through the principle of opposite poles attracting each other. When the horizontal module 300 is placed into the recess 102, the magnetic force between the two will automatically attract and firmly fix it in the predetermined position. No additional operations such as screwing, applying glue, or using clips are required, greatly improving efficiency. The magnet is usually embedded in the bottom of the module or the bottom surface of the recess 102, occupying almost no additional external space. This solves the problem of limited operating space.

[0037] Reference Figure 4 The frame 200 also includes a second mounting portion 220 for mounting the ranging module 400. After the housing 101 and the ranging module 400 are installed, a gap is maintained between the housing 101 and the ranging module 400. The second mounting portion 220 is a specific area or structure on the frame 200 specially designed to mount and fix the ranging module 400. After the vehicle body 120, housing 101, horizontal module 300 and ranging module 400 are installed, the positional relationship between the first mounting portion 210 and the second mounting portion 220 ensures that the housing 101 and the ranging module 400 maintain a gap, which facilitates distance measurement and ensures that the housing 101, horizontal module 300 and ranging module 400 can be correctly, securely and repeatedly installed in the predetermined position to achieve and maintain the precise spatial relationship required by the design.

[0038] Reference Figure 8 The second mounting portion 220 includes a mounting opening 223 through which a portion of the ranging module 400 passes. A first lifting lug 420 is provided around the periphery of the ranging module 400. The second mounting portion 220 is provided with a connecting assembly for connecting the first lifting lug 420. The mounting opening 223 is an opening or hole of a specific shape and size on the second mounting portion 220. The inner wall shape of the mounting opening 223 (which can be square, circular with keyways, polygonal, etc.) matches the partial outline of the ranging module 400. When the ranging module 400 is inserted, the inner wall of the mounting opening 223 restricts the translation of the module, provides initial positioning, and provides support during installation, facilitating the operator's installation of the connecting assembly. The first lifting lug 420 is an ear-shaped structure protruding from the outer shell 101, with a through hole or U-shaped groove. The connecting assembly can lock the first lifting lug 420 onto the second mounting portion 220.

[0039] Reference Figures 6 to 8The connecting assembly includes a first positioning post 221 and a fixing member 222. The first positioning post 221 is fixed to the second mounting part 220 and passes through the first lifting lug 420. The fixing member 222 connects the first lifting lug 420 and the second mounting part 220 to prevent the ranging module 400 from detaching from the second mounting part 220. The first positioning post 221 is a rigid protruding cylinder (or conical column, square column, etc.). The first lifting lug 420 passes through the first positioning post 221 to achieve precise positioning. The fixing member 222 is "[" shaped, consisting of a horizontal beam and two vertical blocks, which straddle the exposed ends of the first lifting lug 420 and the first positioning post 221. A clearance groove is provided between the inner sides of the two vertical blocks to avoid the first lifting lug 420. The fixing member 222 is an operable locking element that can restrict the axial movement of the first lifting lug 420 along the first positioning post 221, keeping the first lifting lug 420 and the second mounting part 220 relatively fixed.

[0040] In some embodiments, the fastener 222 is magnetically connected to the second mounting portion 220. At least one of the second mounting portion 220 or the fastener 222 has a built-in magnetic component (such as a magnet), and the other is made of a magnetically adsorbable material (such as iron, steel, or other metals). The two are fixed together by magnetic attraction. No screws, clips, or other rigid connections are required. During installation, simply align the "[" shaped fastener 222 to the desired position for adsorption. Disassembly is easy with minimal force, making it convenient and preventing wear and tear from repeated disassembly and assembly (it is more durable than screws due to thread wear or clips due to elastic fatigue).

[0041] It is understandable that fastener 222 can also be replaced by bolts, screws, quick-release pins, special clips, locking handles, etc.

[0042] Understandably, the ranging module 400, being a single unit, is easy to disassemble and install. Furthermore, by designing the same positioning structure as the second mounting part 220 at different locations, the ranging module 400 can be installed in the corresponding position, achieving tool sharing and reducing the impact of disassembly and reassembly on detection accuracy. However, if a dial indicator probe is used, its position has been adjusted at the factory; repeated disassembly and reassembly will affect accuracy.

[0043] Reference Figures 10 to 12Before testing, the horizontal module 300 and the laser module need to be installed on the zeroing block to achieve zeroing and improve the accuracy of the test. The zeroing block includes a base 510, a first zeroing part 520, and a second zeroing part 530. The first zeroing part 520 and the second zeroing part 530 are installed on the base 510, placed vertically and parallel to each other, with a certain distance between them. The horizontal module 300 is installed on the first zeroing part 520, and the ranging module 400 is installed on the second zeroing part 530. The relative position of the first zeroing part 520 and the second zeroing part 530 is the ideal position for the radar 100 to be installed on the bracket 130. The mounting and fixing structure of the first zeroing part 520 and the second zeroing part 530 can be the same as the structure on the frame 200 and the bracket 130, or other structures can be used. For example, both the horizontal module 300 and the laser module are fixed to the first zeroing part 520 and the second zeroing part 530 respectively by clamping plates 540, and the clamping plates 540 are magnetically connected to the first zeroing part 520 and the second zeroing part 530 respectively. Figure 10 This is a schematic diagram showing the situation without the clamping plate 540 installed. Figure 11 This is a schematic diagram after installing the clamping plate 540. Figure 12 This is a schematic diagram showing another angle after the clamping plate 540 is installed.

[0044] During zeroing, firstly, the horizontal module 300 is directly installed onto the housing 101 of the radar 100, automatically secured by magnets. Next, the horizontal module 300 is installed onto the first zeroing section 520, and the ranging module 400 is installed onto the second zeroing section 530. The clamping plates 540 for the horizontal module 300 and the ranging module 400 are then installed to secure them. Finally, the horizontal module 300 and the ranging module 400 are zeroed. After successful zeroing, the horizontal module 300 is removed from the first zeroing section 520 and installed onto the bracket 130 of the bumper 110. The ranging module 400 is removed from the second zeroing section 530 and installed onto the second mounting section 220.

[0045] This invention also provides a radar detection method.

[0046] Step 1: Remove the outer casing from the radar and assemble the horizontal module into the recess of the radar's outer casing.

[0047] Step 2: Install the assembled horizontal module and ranging module onto the same zeroing block, ensuring the horizontal module is horizontal relative to the outer casing and that the detection distances of the two ranging sensors on the ranging module and the back of the outer casing are equal. Specifically, assemble the horizontal module and the outer casing and install them onto the first zeroing block, then install the entire ranging module onto the second zeroing block, and perform zeroing after fixing.

[0048] Step 3: Install the car body onto the frame, and then install the bracket onto the car body. Installing the car body onto the frame simulates the scenario of installing the car body onto a car frame. Step 4: Remove the horizontal module and housing from the first calibration unit and install them onto the bracket. Remove the ranging module from the second calibration unit and install it onto the second mounting part of the frame. The second mounting part is constructed such that the two ranging sensors of the ranging module are arranged horizontally and perpendicular to the front-rear direction of the vehicle body.

[0049] Step 5: The horizontal module and the distance measuring module perform measurements respectively, and transmit the measurement data to the industrial tablet PC. The industrial tablet PC calculates and displays the measurement results.

[0050] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A radar angle detection device for measuring the angle of a radar installed in a vehicle, characterized in that, include: A horizontal module, connected to the radar, is used to detect the radar's elevation angle; The ranging module includes two ranging sensors located on the same horizontal line and spaced apart by a first distance L along a first direction. The ranging module and the radar are spaced apart along a second direction, the first direction being perpendicular to the second direction. The two ranging sensors measure the distance to the radar respectively, and the difference between the distances measured by the two ranging sensors is D. The heading angle of the radar is α = Arc tan(D / L).

2. The radar angle detection device according to claim 1, characterized in that, The vehicle includes a body shell and a bracket, the bracket being mounted on the body shell. The radar includes a housing, the housing being mounted on the bracket. The housing has a cavity on the side facing away from the ranging module, the horizontal module being embedded in the cavity. The housing has a back surface on the side facing the ranging module, the back surface being flat. Two ranging sensors detect the distance between the ranging module and the back surface.

3. The radar angle detection device according to claim 2, characterized in that, The horizontal module is magnetically connected to the outer shell.

4. The radar angle detection device according to claim 2, characterized in that, The radar angle detection device includes a frame, which includes a first mounting part for mounting the vehicle shell and a second mounting part for mounting the ranging module. After the shell and the ranging module are installed, the shell and the ranging module maintain a distance.

5. The radar angle detection device according to claim 4, characterized in that, The second mounting part includes a mounting port, a portion of the ranging module is inserted through the mounting port, the periphery of the ranging module is provided with a first lifting lug, and the second mounting part is provided with a connecting component for connecting the first lifting lug.

6. The radar angle detection device according to claim 5, characterized in that, The connecting assembly includes a first positioning post and a fixing member. The first positioning post is fixed on the second mounting part and passes through the first lifting lug. The fixing member connects the first lifting lug and the second mounting part to prevent the ranging module from detaching from the second mounting part.

7. The radar angle detection device according to claim 6, characterized in that, The fastener is magnetically connected to the second mounting part.

8. The radar angle detection device according to claim 4, characterized in that, The first mounting part includes a positioning surface and a pressing mechanism. The positioning surface positions the vehicle body, and the pressing mechanism is used to press the vehicle body against the positioning surface.

9. The radar angle detection device according to claim 2, characterized in that, The outer shell is provided with a second lifting lug, the bracket is provided with a mounting position, the mounting position is provided with a second positioning post and a snap-fit ​​part, the second lifting lug passes through the second positioning post, the snap-fit ​​part is close to both sides of the second lifting lug, and the snap-fit ​​part is snapped into place by a buckle, thereby fixing the outer shell.

10. The radar angle detection device according to claim 1, characterized in that, The radar angle detection device also includes a computer and a display device. The measurement results of the ranging module are transmitted to the computer, and the computer calculates the measurement results according to the radar heading angle calculation formula and displays the measurement results on the display device.

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