A millimeter-wave radar sensor with an outwardly expanding arc-shaped sensing surface structure

Abstract

This utility model discloses a millimeter-wave radar sensor with an outwardly expanding arc-shaped sensing surface structure, relating to the field of vehicle sensor technology. It includes a housing, a threaded rod, a radome, and a radar module. A sealing plate is positioned on the top of the housing, with heat dissipation holes evenly spaced at the top. The threaded rod is connected through the bottom of the sealing plate. An assembly mechanism is located on the outer side of the housing, reducing the maintenance difficulty of the radar module according to its specifications and maintenance requirements. A repositioning mechanism is located at the bottom of the radar module, adjusting the scanning direction of the radar module. This utility model, through its outwardly expanding arc-shaped radome design and the protruding arc-shaped sensing surface, changes the electromagnetic wave transmission and reception path of traditional planar or concave structures, enabling millimeter waves to diffuse over a wider angle, significantly improving the detection range in both horizontal and vertical directions.

Description

Technical Field

[0001] This utility model relates to the field of vehicle sensor technology, specifically a millimeter-wave radar sensor with an outwardly expanding arc-shaped sensing surface structure. Background Technology

[0002] Millimeter-wave radar often needs to be combined with ultrasonic radar, cameras and other vehicle sensors to form a multimodal sensing system. Its working principle is to emit millimeter-wave signals and receive reflected echoes, and use the Doppler effect to calculate the distance, speed and azimuth of the target object. Combined with the algorithm fusion of the vehicle ECU, it can accurately identify dynamic targets such as vehicles and pedestrians within a range of 20-80 meters to the side and rear.

[0003] Most traditional radar sensors currently in use typically have an integrated sealed housing, such as plastic or metal injection molding or metal stamping. Core components such as radar modules, circuit boards, and antennas are directly fixed inside the housing. Radar covers or protective covers are rigidly connected by adhesives, heat fusion, or bolts, without independent disassembly interfaces. The scanning direction of traditional radar sensors is mostly fixed and cannot be dynamically changed according to the actual installation environment or task requirements, resulting in limited scanning coverage. Utility Model Content

[0004] The purpose of this invention is to provide a millimeter-wave radar sensor with an outwardly expanding arc-shaped sensing surface structure to solve the problems raised in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a millimeter-wave radar sensor with an outwardly expanding arc-shaped sensing surface structure, comprising a housing, a threaded rod, a radar radome, and a radar module. A sealing plate is provided on the top of the housing, and heat dissipation holes are evenly spaced at the top of the sealing plate. A threaded rod is connected through the bottom of the sealing plate. An assembly mechanism is provided on the outside of the housing. The assembly mechanism splices and assembles the housing and radar radome according to the specifications of the radar module and maintenance requirements, reducing the maintenance difficulty of the radar module. A repositioning mechanism is provided at the bottom of the radar module. The repositioning mechanism adjusts the scanning direction of the radar module and adjusts the radar module accordingly according to the installation position, reducing the scanning blind spots of the radar module.

[0006] As a preferred technical solution, the assembly mechanism includes a threaded rod, a chassis, a slot, a radar dome, a nut, a positioning rod, and a positioning groove. The bottom end of the threaded rod is connected to the chassis, the surface of the chassis has a slot, the outer side of the slot is connected to the bottom end of the outer shell, the inner end of the outer shell has symmetrical slots, the outer side of the slot is connected to the radar dome, the inner end of the radar dome is connected to the positioning rod, the top end of the positioning rod is connected to the threaded rod, and the nut is threadedly connected to the threaded rod.

[0007] As a preferred technical solution, the chassis is connected to the bottom of the outer shell through a positioning groove at the top, and the width of the outer shell is greater than the width of the radome.

[0008] As a preferred technical solution, the positioning rod is connected to the nut via a threaded rod at its top, and the threaded rod is connected to and locked to the sealing plate via the nut.

[0009] As a preferred technical solution, the shifting mechanism includes a radar module, a radar base, a drive gear, a driven gear, and a servo motor. The radar module is mounted on the surface of the radar base via a bracket. The radar base is positioned directly above the chassis. The driven gear meshes with the outer side of the drive gear. The driven gear is mounted at the bottom of the radar base. The drive gear is connected to the servo motor via a coupling. The top of the servo motor is mounted on the outer side of the chassis.

[0010] As a preferred technical solution, the radar mount is connected to the top of the chassis via a bearing shaft, and the radar mount and radar cover are arranged in parallel.

[0011] As a preferred technical solution, the radar mount meshes with a driven gear located at the bottom and a driving gear located on one side.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model, through its outwardly expanding arc-shaped radar dome design and the outwardly protruding arc-shaped sensing surface, changes the electromagnetic wave transmission and reception path of traditional planar or concave structures, enabling millimeter waves to diffuse at a wider angle, significantly improving the detection wide angle in both horizontal and vertical directions. The heat dissipation holes at the top of the sealing plate form an air convection channel, which can quickly dissipate the heat generated by the radar module during operation. The assembly mechanism 9, through a composite structure of slot positioning and positioning rod locking, solves the problems of difficult maintenance and poor adaptability caused by the rigid structure of traditional radar sensors.

[0014] 2. This utility model upgrades the fixed scanning mode of the traditional radar sensor to a dynamically adjustable scanning mode through the design of the shifting mechanism, gear transmission, and servo drive. The servo motor drives the driven gear to rotate through the active gear, which in turn drives the radar mount to rotate around the bearing shaft, thereby realizing the adjustment of the radar module in the horizontal azimuth angle. The radar module is installed above the windshield of the car, and the radar beam can cover the low area between the hood and the front bumper, reducing the radar's scanning blind spots. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the outer shell of this utility model;

[0017] Figure 3 This is a schematic diagram of the transposition mechanism of this utility model;

[0018] Figure 4 This is a top view of the chassis structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the radar mount structure of this utility model from a bottom view;

[0020] Figure 6 This is a schematic diagram of the assembly mechanism of this utility model.

[0021] The components include: 1. Outer shell; 2. Sealing plate; 3. Heat dissipation holes; 4. Threaded rod; 5. Chassis; 6. Slot; 7. Radar cover; 8. Radar module; 9. Assembly mechanism; 10. Nut; 11. Positioning rod; 12. Positioning slot; 13. Shifting mechanism; 14. Radar mount; 15. Drive gear; 16. Driven gear; 17. Servo motor. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example: Figure 1 and Figure 6 As shown, this utility model provides the following technical solution: a millimeter-wave radar sensor with an outwardly expanding arc-shaped sensing surface structure, including a housing 1, a threaded rod 4, a radar cover 7, and a radar module 8. A sealing plate 2 is provided on the top of the housing 1, and heat dissipation holes 3 are equally spaced on the top of the sealing plate 2. The threaded rod 4 is connected through the bottom of the sealing plate 2. An assembly mechanism 9 is provided on the outside of the housing 1. The assembly mechanism 9 splices and assembles the housing 1 and the radar cover 7 according to the specifications of the radar module 8 and the maintenance requirements, reducing the maintenance difficulty of the radar module 8. A switching mechanism 13 is provided at the bottom of the radar module 8. The switching mechanism 13 adjusts the scanning direction of the radar module 8 and adjusts the radar module 8 accordingly according to the installation position, reducing the scanning blind spot of the radar module 8.

[0024] The outer shell 1 and the radome 7 are both connected to the chassis 5 via slots 6, which facilitates the positioning, disassembly and replacement of the radome 7 and adapts to radar modules 8 of different lengths. If a larger or smaller radar module 8 needs to be replaced, the bottom of the outer shell 1 and the top of the chassis 5 can be separated by the slots 6, or a chassis 5 of matching specifications can be directly replaced.

[0025] like Figure 1 , Figure 2 and Figure 3 As shown, the assembly mechanism 9 includes a threaded rod 4, a base 5, a slot 6, a radar cover 7, a nut 10, a positioning rod 11, and a positioning groove 12. The bottom end of the threaded rod 4 is connected to the base 5. The surface of the base 5 has a slot 6. The outer side of the slot 6 is connected to the bottom end of the outer shell 1. The inner end of the outer shell 1 has symmetrical slots 6. The outer side of the slot 6 is connected to the radar cover 7. The inner end of the radar cover 7 is connected through the positioning rod 11. The top end of the positioning rod 11 is connected to the threaded rod 4. The nut 10 is threadedly connected to the threaded rod 4. The base 5 is connected to the bottom end of the outer shell 1 through the positioning groove 12 at the top end. The width of the outer shell 1 is greater than the width of the radar cover 7. The positioning rod 11 is connected to the nut 10 through the threaded rod 4 at the top end. The threaded rod 4 is connected and locked to the sealing plate 2 through the nut 10.

[0026] The top end of the positioning rod 11 is fixedly connected to the threaded rod 4, and the bottom end passes through the through hole of the radar cover 7 and engages with the positioning groove 12 of the chassis 5. The locking of the nut 10 on the threaded rod 4 provides axial tension, which fixes the vertical position of the radar cover 7 and the outer shell 1, preventing the radar module 8 from collapsing or tilting due to gravity or external impact, and ensuring the accuracy of the scanning angle.

[0027] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the switching mechanism 13 includes a radar module 8, a radar base 14, a drive gear 15, a driven gear 16, and a servo motor 17. The radar module 8 is mounted on the surface of the radar base 14 via a bracket. The radar base 14 is positioned directly above the chassis 5. The driven gear 16 meshes with the outer side of the drive gear 15. The driven gear 16 is mounted at the bottom of the radar base 14. The drive gear 15 is connected to the servo motor 17 via a coupling. The top of the servo motor 17 is mounted on the outer side of the chassis 5. The radar base 14 is connected to the top of the chassis 5 via a bearing shaft. The radar base 14 and the radar cover 7 are arranged parallel to each other. The radar base 14 meshes with the drive gear 15 on one side via the driven gear 16 at its bottom.

[0028] Among them, the switching mechanism 13 can dynamically adjust the scanning direction of the radar module 8 according to the installation location, such as the top of the windshield of a vehicle, to ensure that the radar beam covers the key monitoring area. The servo motor 17 drives the driven gear 16 to rotate through the active gear 15. The gear transmission ratio ranges from 1:10 to 1:50, which drives the radar mount 14 to rotate around the bearing shaft, thereby realizing the radar module 8 in the horizontal azimuth angle.

[0029] The working principle of this utility model is as follows:

[0030] Before installation, the radar module 8 should be placed in the center area of ​​the chassis 5, and the installation position of the radar module 8 and the radar mount 14 should be aligned. With the chassis 5 as the reference, the chassis 5 is connected to the bottom of the outer shell 1 through the positioning groove 12 opened at the top. The two arc-shaped ends of the radar cover 7 are aligned and connected with the slots 6 of the outer shell 1. Similarly, the horizontal sliding is guided by the guide slope and connected to the radar cover 7 through the vertically set positioning rod 11, ensuring that the vertical center line of the radar cover 7 and the radar module 8 coincide.

[0031] The radar module 8 is directly mounted on the top of the radar mount 14 via a corresponding bracket. The bottom of the radar mount 14 is connected to the top of the chassis 5 via a bearing shaft. The heat dissipation holes 3 are used to dissipate heat from the radar module 8 during operation. The sealing plate 2 is directly mounted on the top of the outer shell 1 and the radar cover 7, allowing the threaded rod 4 to pass through the sealing plate 2. The threaded rod 4 is locked with a nut 10, and the top of the sealing plate 2 is pressed with the nut 10, thus sealing the top of the radar module 8.

[0032] Servo motor 17 is connected to the vehicle or equipment control system, such as an autonomous driving domain controller or radar control unit, via wires to receive control signals including the target angle. Servo motor 17 has a built-in high-precision encoder that can provide real-time feedback on its own speed and position. The output shaft of servo motor 17 is fixed to the hub of drive gear 15 via a rigid coupling, transmitting the motor's rotational torque to drive gear 15. The coupling's function is to eliminate minor misalignments between the motor output shaft and the axis of drive gear 15.

[0033] The driving gear 15 and the driven gear 16 transmit motion through tooth surface meshing. The driven gear 16 rotates at a lower speed than the driving gear 15, but its output torque is increased. This converts the high speed and low torque of the servo motor 17 into the low speed and high torque output required by the radar mount 14. The driven gear 16 is fixed to the bottom of the radar mount 14 by bolts. The top of the radar mount 14 is connected to the top surface of the chassis 5 through a bearing shaft. When the driven gear 16 rotates, the radar mount 14 rotates around the bearing shaft, causing the radar module 8 mounted on its surface to rotate synchronously, thereby changing the scanning direction of the radar beam.

[0034] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A millimeter wave radar sensor provided with an outwardly flared arc-shaped sensing surface structure, characterized in that: The system includes a housing (1), a threaded rod (4), a radar cover (7), and a radar module (8). A sealing plate (2) is provided on the top of the housing (1). The top of the sealing plate (2) has heat dissipation holes (3) at equal intervals. The bottom of the sealing plate (2) is connected through the threaded rod (4). An assembly mechanism (9) is provided on the outside of the housing (1). The assembly mechanism (9) splices and assembles the housing (1) and the radar cover (7) according to the specifications of the radar module (8) and the maintenance requirements. A switching mechanism (13) is provided at the bottom of the radar module (8). The switching mechanism (13) adjusts the scanning direction of the radar module (8) and adjusts the radar module (8) accordingly according to the installation position.

2. A millimeter wave radar sensor provided with an outwardly flared arc-shaped induction surface structure according to claim 1, characterized in that: The assembly mechanism (9) includes a threaded rod (4), a chassis (5), a slot (6), a radar dome (7), a nut (10), a positioning rod (11), and a positioning groove (12). The bottom end of the threaded rod (4) is connected to the chassis (5). The surface of the chassis (5) is provided with a slot (6). The outer side of the slot (6) is connected to the bottom end of the outer shell (1). The inner end of the outer shell (1) is symmetrically provided with slots (6). The outer side of the slot (6) is connected to the radar dome (7). The inner end of the radar dome (7) is connected through a positioning rod (11). The top end of the positioning rod (11) is connected to the threaded rod (4). The nut (10) is threadedly connected to the threaded rod (4).

3. A millimeter wave radar sensor with an outwardly flared arc-shaped induction face structure according to claim 2, characterized in that: The chassis (5) is connected to the bottom of the outer shell (1) through a positioning groove (12) at the top. The width of the outer shell (1) is greater than the width of the radar dome (7).

4. The millimeter wave radar sensor with an outwardly flared arc-shaped induction face structure according to claim 2, characterized in that: The positioning rod (11) is connected to the nut (10) via a threaded rod (4) at the top end, and the threaded rod (4) is connected to and locked to the sealing plate (2) via the nut (10).

5. The millimeter wave radar sensor with an outwardly flared arc-shaped induction face structure according to claim 1, characterized in that: The switching mechanism (13) includes a radar module (8), a radar base (14), a drive gear (15), a driven gear (16), and a servo motor (17). The radar module (8) is mounted on the surface of the radar base (14) via a bracket. The radar base (14) is located directly above the chassis (5). The driven gear (16) meshes with the outer side of the drive gear (15). The driven gear (16) is mounted at the bottom of the radar base (14). The drive gear (15) is connected to the servo motor (17) via a coupling. The top of the servo motor (17) is mounted on the outer side of the chassis (5).

6. A millimeter wave radar sensor provided with an outwardly flared arc-shaped induction surface structure according to claim 5, characterized in that: The radar mount (14) is connected to the top of the chassis (5) via a bearing shaft, and the radar mount (14) and the radar cover (7) are arranged in parallel.

7. A millimeter wave radar sensor provided with an outwardly flared arc-shaped induction surface structure according to claim 6, characterized in that: The radar mount (14) meshes with the driven gear (15) on one side via the driven gear (16) at the bottom.

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