Automobile radar stealth-aerodynamic drag reduction collaborative structure and dynamic control method

Abstract

This invention relates to the field of automotive aerodynamics technology, providing a synergistic structure and dynamic control method for automotive radar stealth and aerodynamic drag reduction. The structure includes a front lip and a radar module comprising a radar housing. A long strip radar is installed within the radar housing, and the long strip radar is connected to the sidewall of the radar housing via a housing sponge. The front end of the long strip radar is equipped with a retractable radar probe and an extended radar probe, and a radar aperture is provided on the front of the grille. A first adjustment component is disposed inside the radar housing, and the first adjustment component is connected to the long strip radar via a second adjustment component. This invention achieves synergistic optimization of radar stealth, aerodynamic drag reduction, heat dissipation, cleanliness, and detection performance, and has advantages such as compact structure, accurate response, and strong adaptability. It is suitable for the integrated design of forward radar systems in intelligent connected vehicles.

Description

Technical Field

[0001] This invention belongs to the field of automotive aerodynamics technology, and in particular relates to a collaborative structure and dynamic control method for automotive radar stealth and aerodynamic drag reduction. Background Technology

[0002] With the rapid development of automotive intelligence and electrification technologies, forward-facing radar, as a core perception component of Advanced Driver Assistance Systems (ADAS) and autonomous driving systems, has a significant impact on overall vehicle performance due to its installation layout. Currently, forward-facing radars are typically fixed in place, often square or round in shape, and located in the front bumper or grille area. While this installation method is simple in structure and low in cost, the radar probe often protrudes from the vehicle's surface, disrupting the aerodynamic continuity of the vehicle's exterior and increasing air resistance during driving, thus affecting the driving range of electric vehicles. Furthermore, the gap between the radar and the vehicle body easily leads to radar wave reflection and diffraction, increasing the vehicle's radar cross-section (RCS). In dense traffic flow, this can easily cause radar interference between vehicles, making it difficult to meet the radar stealth performance requirements of intelligent connected vehicles.

[0003] To address the aforementioned issues, some existing technologies have proposed movable radar structures, such as those that allow for extension, retraction, or pitch adjustment to improve aerodynamic characteristics and detection angle. However, existing movable radars typically only possess single-degree-of-freedom movement capabilities, lacking multi-degree-of-freedom coordinated adjustment mechanisms, making it difficult to meet the dynamic demands of various operating conditions, including high-speed cruising, urban congestion, and rain / snow. Furthermore, the existing movable radars suffer from insufficient linkage design with aerodynamic components such as grilles and front lips, failing to form an integrated coordinated control mechanism. This results in a difficulty in achieving a dynamic balance between radar detection performance, stealth performance, and aerodynamic drag reduction performance. In addition, insufficient precision in the fit between the radar probe and mounting holes leads to poor sealing and aerodynamic smoothness, affecting the overall performance of the vehicle.

[0004] Therefore, designing a structure and control method that enables multi-degree-of-freedom dynamic adjustment of the radar and works in conjunction with the grille and front lip to adapt to different driving conditions while considering aerodynamic drag reduction, radar stealth, and detection performance has become a pressing technical problem in this field. Existing technologies have not yet provided a complete technical solution that meets these requirements. Summary of the Invention

[0005] The purpose of this invention is to provide a vehicle radar stealth-aerodynamic drag reduction cooperative structure and dynamic control method, aiming to solve the problems mentioned in the background art.

[0006] The present invention is implemented as follows: a collaborative structure for automotive radar stealth and aerodynamic drag reduction includes a front lip disposed below the grille, and further includes:

[0007] A radar module, installed within the inner cavity of a grille, includes a radar housing. A long strip radar is installed within the radar housing, extending through one side of the housing and beyond its outer surface. The long strip radar is connected to the side wall of the radar housing via a housing sponge. A retractable radar probe and an extended radar probe are provided at the front end of the long strip radar. A radar hole for accommodating the retractable and extended radar probes is provided on the front side of the grille. Inside the radar housing is a first adjustment component for driving the long strip radar to move linearly along the axial direction of the radar hole. The first adjustment component is connected to the long strip radar via a second adjustment component, which adjusts the pitch angle of the long strip radar.

[0008] In a further technical solution, a radar locking ring is also provided in the radar housing, which is sleeved on the elongated radar and used to limit the position of the elongated radar.

[0009] In a further technical solution, the first adjustment component includes a horizontal electric push rod installed inside the radar housing. The horizontal electric push rod is installed in a horizontal push rod housing, and a horizontal push rod motor for driving the horizontal electric push rod is provided in the horizontal push rod housing. One end of the horizontal electric push rod located outside the horizontal push rod housing is connected to the second adjustment component.

[0010] In a further technical solution, a push rod pulley is provided at one end of the horizontal electric push rod located outside the horizontal push rod housing, and the push rod pulley is slidably mounted on a push rod slide rail provided inside the radar housing.

[0011] In a further technical solution, the second adjustment component includes a vertical push rod housing connected to a horizontal electric push rod, a vertical electric push rod mounted on the vertical push rod housing, and a vertical push rod motor for driving the vertical electric push rod installed in the vertical push rod housing. The end of the vertical electric push rod is hinged to a radar rotating column on a long strip radar.

[0012] Another objective of this invention is to provide a dynamic control method for a vehicle radar stealth-aerodynamic drag reduction cooperative structure, comprising the following steps:

[0013] Step 1 (Congestion Mode): When the vehicle speed is 0 < V ≤ 40 km / h and it is under normal operating conditions, the ECU controls the front lip to retract and close the grille, the horizontal electric push rod retracts, the vertical electric push rod controls the long radar strip to remain horizontal, and the radar probe is retracted to completely hide in the radar hole, achieving the best stealth effect.

[0014] Step 2 (Medium-high speed mode): When the vehicle speed V is 40 < V ≤ 80 km / h and it is under normal operating conditions, the ECU controls the front lip to retract and controls the grille to open 30°. The horizontal electric push rod retracts, and the vertical electric push rod controls the long radar strip to remain horizontal. The radar probe is retracted and hidden into the radar hole, taking into account both stealth and heat dissipation.

[0015] Step 3 (High-speed cruise mode): When the vehicle speed V is 80 < V ≤ 120 km / h and it is under normal operating conditions, the ECU controls the front lip to extend and the grille to open fully. The horizontal electric push rod extends, the vertical electric push rod retracts, the extended radar probe extends and tilts upward to optimize long-range detection performance.

[0016] Step 4 (Low-speed rain and snow mode): When the vehicle speed V is 0 < V ≤ 40 km / h and it is rain or snow, the ECU controls the front lip to retract and controls the grille to open 30°. The horizontal electric push rod extends, the vertical electric push rod extends, the extended radar probe extends and tilts down, and uses airflow to clean the radar surface.

[0017] Step 5 (Medium-high speed rain and snow mode): When the vehicle speed V is 40 < V ≤ 80 km / h and it is rain or snow, the ECU controls the front lip to retract and controls the grille to open 60°. The horizontal electric push rod extends, the vertical electric push rod extends, the extended radar probe extends and tilts down, enhancing the cleaning effect and reducing drag.

[0018] Step 6 (High-speed rain and snow mode): When the vehicle speed V is 80 < V ≤ 120 km / h and it is rain or snow, the ECU controls the front lip to extend and the grille to open fully. The horizontal electric push rod retracts, and the vertical electric push rod controls the long radar strip to remain horizontal. The radar probe retracts and hides in the radar hole to protect the radar from sand and gravel impact.

[0019] The present invention provides a collaborative structure and dynamic control method for automotive radar stealth and aerodynamic drag reduction, the advantages of which are as follows:

[0020] (1) Multi-condition collaborative optimization: Through the dual-degree-of-freedom adjustment of the long strip radar and the dynamic linkage of the grille and front lip, a precise balance between stealth, drag reduction, heat dissipation, cleaning and detection performance can be achieved.

[0021] (2) Improve radar stealth performance: In strong interference scenarios, both the retractable radar probe and the extended radar probe are embedded in the vehicle body to form a continuous curved surface, which effectively reduces the radar cross section.

[0022] (3) Enhance radar cleaning capability: In rain and snow conditions, the long strip radar tilts down and the grid opening is coordinated to form an air curtain to blow and extend the radar probe surface, ensuring detection accuracy.

[0023] (4) Stable and reliable structure: The dual electric push rod structure is driven by ECU closed-loop control, which ensures precise action, stable transmission and good engineering feasibility.

[0024] (5) Optimized detection performance: When the radar is high speed, the upward tilt of the long strip radar suppresses ground multipath reflection, and when the radar is low speed, the horizontal attitude ensures close-range collision warning.

[0025] (6) Improved structural stability: The outer shell is cushioned and damped by sponge, sealed and filled, and precisely locked with radar locking ring to avoid the long strip radar from deviating and affecting the detection accuracy. Attached Figure Description

[0026] Figure 1 A schematic diagram showing the installation location of the vehicle's front fascia and the vehicle radar stealth-aerodynamic drag reduction collaborative structure.

[0027] Figure 2 This is a cross-sectional view of a long strip radar retracted into the vehicle in an embodiment of the present invention.

[0028] Figure 3 This is a cross-sectional view of a long radar strip extending horizontally outside the vehicle in an automotive radar stealth-aerodynamic drag reduction cooperative structure provided by an embodiment of the present invention.

[0029] Figure 4 This is a cross-sectional view of the elongated radar tilting structure in an automotive radar stealth-aerodynamic drag reduction cooperative structure provided in an embodiment of the present invention;

[0030] Figure 5 This is a cross-sectional view of a long strip radar tilting downwards in an automotive radar stealth-aerodynamic drag reduction cooperative structure provided in an embodiment of the present invention.

[0031] In the attached diagram: 1-Grate; 2-Radar module; 3-Radar aperture; 4-Front lip; 21-Retractable radar probe; 22-Extended radar probe; 23-Radar housing; 24-Long strip radar; 25-Housing foam; 26-Vertical push rod housing; 27-Vertical electric push rod; 28-Vertical push rod motor; 29-Radar locking ring; 210-Push rod slide rail; 211-Push rod pulley; 212-Horizontal electric push rod; 213-Horizontal push rod housing; 214-Horizontal push rod motor; 215-Radar rotating column. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0033] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0034] like Figures 1-5As shown, an embodiment of the present invention provides a vehicle radar stealth-aerodynamic drag reduction cooperative structure, including a front lip 4 disposed below the grille 1, and further comprising:

[0035] Radar module 2, installed inside the cavity of grille 1, includes a radar housing 23, in which a long strip radar 24 is installed, extending through one side of the radar housing 23 and outwards to the outside of the radar housing 23, and connected to the side wall of the radar housing 23 by a housing sponge 25; the front end of the long strip radar 24 is provided with a retractable radar probe 21 and an extended radar probe 22, and the front of the grille 1 is provided with a radar hole 3 for matching the retractable radar probe 21 and the extended radar probe 22; the inside of the radar housing 23 is provided with a first adjustment component for driving the long strip radar 24 to move linearly along the axial direction of the radar hole 3, the first adjustment component is connected to the long strip radar 24 through a second adjustment component, the second adjustment component is used to adjust the pitch angle of the long strip radar 24.

[0036] like Figure 2 As shown, in a preferred embodiment of the present invention, a radar locking ring 29 is further provided in the radar housing 23. The radar locking ring 29 is sleeved on the elongated radar 24 and is used to limit the elongated radar 24.

[0037] In this embodiment of the invention, the radar locking ring 29 locks onto the outer shell sponge 25 when the long strip radar 24 extends or pitches, thereby achieving precise locking of the long strip radar 24 and preventing the long strip radar 24 from being affected by vehicle bumps and shifts, thus avoiding impact on detection accuracy.

[0038] like Figure 2 As shown, in a preferred embodiment of the present invention, the first adjustment component includes a horizontal electric push rod 212 installed inside the radar housing 23. The horizontal electric push rod 212 is installed in a horizontal push rod housing 213, and a horizontal push rod motor 214 for driving the horizontal electric push rod 212 is provided in the horizontal push rod housing 213. One end of the horizontal electric push rod 212 located outside the horizontal push rod housing 213 is connected to the second adjustment component and is provided with a push rod pulley 211. The push rod pulley 211 is slidably installed on a push rod slide rail 210 provided inside the radar housing 23.

[0039] In this embodiment of the invention, during use, the horizontal electric push rod 212 can be driven to move by the horizontal push rod motor 214. The horizontal electric push rod 212 drives the second adjustment component and the push rod pulley 211 to move synchronously along the push rod slide rail 210, thereby driving the long strip radar 24 to move linearly.

[0040] like Figure 2As shown, in a preferred embodiment of the present invention, the second adjustment assembly includes a vertical push rod housing 26 connected to the horizontal electric push rod 212, a vertical electric push rod 27 is mounted on the vertical push rod housing 26, and a vertical push rod motor 28 for driving the vertical electric push rod 27 is installed in the vertical push rod housing 26. The end of the vertical electric push rod 27 is hinged to the radar rotating column 215 on the elongated radar 24.

[0041] In this embodiment of the invention, during use, the vertical electric push rod 27 is extended and retracted by the vertical push rod motor 28. The vertical electric push rod 27 can drive the long strip radar 24 to rotate up and down around the outer shell sponge 25 through the radar rotating column 215, thereby adjusting the pitch angle of the long strip radar 24.

[0042] Another embodiment of the present invention provides a dynamic control method for a vehicle radar stealth-aerodynamic drag reduction cooperative structure, comprising the following steps:

[0043] Step 1 (Congestion Mode): When the vehicle speed V is 0 < V ≤ 40 km / h and it is under normal operating conditions, the ECU controls the front lip 4 to retract and close the grille 1, the horizontal electric push rod 212 retracts, the vertical electric push rod 27 controls the long strip radar 24 to remain horizontal, and the radar probe 21 retracts completely into the radar hole 3 to achieve the best stealth effect.

[0044] Step 2 (Medium-high speed mode): When the vehicle speed V is 40 < V ≤ 80 km / h and it is under normal operating conditions, the ECU controls the front lip 4 to retract and controls the grille 1 to open 30°. The horizontal electric push rod 212 retracts, and the vertical electric push rod 27 controls the long strip radar 24 to remain horizontal. The radar probe 21 is retracted and hidden into the radar hole 3, taking into account both concealment and heat dissipation.

[0045] Step 3 (High-speed cruise mode): When the vehicle speed V is 80 < V ≤ 120 km / h and is under normal operating conditions, the ECU controls the front lip 4 to extend and controls the grille 1 to fully open, the horizontal electric push rod 212 to extend, the vertical electric push rod 27 to retract, the extended radar probe 22 to extend and tilt upwards, and optimize long-range detection performance.

[0046] Step 4 (Low-speed rain and snow mode): When the vehicle speed V is 0 < V ≤ 40 km / h and it is rain or snow, the ECU controls the front lip 4 to retract and controls the grille 1 to open 30°. The horizontal electric push rod 212 extends, the vertical electric push rod 27 extends, the extended radar probe 22 extends and tilts down, and uses airflow to clean the radar surface.

[0047] Step 5 (Medium-high speed rain and snow mode): When the vehicle speed V is 40 < V ≤ 80 km / h and it is rain or snow, the ECU controls the front lip 4 to retract and controls the grille 1 to open 60°. The horizontal electric push rod 212 extends, the vertical electric push rod 27 extends, and the extended radar probe 22 extends and tilts down to enhance the cleaning effect and reduce drag.

[0048] Step 6 (High-speed rain and snow mode): When the vehicle speed V is 80 < V ≤ 120 km / h and it is rain or snow, the ECU controls the front lip 4 to extend and controls the grille 1 to open fully. The horizontal electric push rod 212 retracts, the vertical electric push rod 27 controls the long strip radar 24 to remain horizontal, and the radar probe 21 retracts into the radar hole 3 to protect the radar from sand and gravel impact.

[0049] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A dynamic control method for a vehicle radar stealth-aerodynamic drag reduction cooperative structure, characterized in that, The automotive radar stealth-aerodynamic drag reduction cooperative structure includes a front lip positioned below the grille, and also includes: A radar module, installed within the inner cavity of a grille, includes a radar housing. A long strip radar is installed within the radar housing, extending through one side of the housing and beyond its outer surface. The long strip radar is connected to the side wall of the radar housing via a housing sponge. The front end of the long strip radar is equipped with a retractable radar probe and an extended radar probe. A radar hole is provided on the front side of the grille for accommodating the retractable and extended radar probes. Inside the radar housing is a first adjustment component for driving the long strip radar to move linearly along the axial direction of the radar hole. The first adjustment component is connected to the long strip radar via a second adjustment component, which adjusts the pitch angle of the long strip radar. The first adjustment assembly includes a horizontal electric push rod installed inside the radar housing. The horizontal electric push rod is installed in a horizontal push rod housing, and a horizontal push rod motor for driving the horizontal electric push rod is provided in the horizontal push rod housing. One end of the horizontal electric push rod located outside the horizontal push rod housing is connected to the second adjustment assembly. The second adjustment assembly includes a vertical push rod housing connected to a horizontal electric push rod, a vertical electric push rod mounted on the vertical push rod housing, and a vertical push rod motor for driving the vertical electric push rod installed in the vertical push rod housing. The end of the vertical electric push rod is hinged to a radar rotating column on a long strip radar. The dynamic control method includes the following steps: Step 1: When the vehicle speed V is 0 < V ≤ 40 km / h and it is under normal operating conditions, the ECU controls the front lip to retract and close the grille, the horizontal electric push rod retracts, the vertical electric push rod controls the long radar to remain horizontal, and the radar probe retracts completely into the radar hole. Step 2: When the vehicle speed V is 40 < V ≤ 80 km / h and it is under normal operating conditions, the ECU controls the front lip to retract and controls the grille to open 30°, the horizontal electric push rod to retract, the vertical electric push rod controls the long radar to keep horizontal, and the radar probe to retract into the radar hole. Step 3: When the vehicle speed V is 80 < V ≤ 120 km / h and it is under normal operating conditions, the ECU controls the front lip to extend and controls the grille to open fully, the horizontal electric push rod to extend, the vertical electric push rod to retract, and the extended radar probe to extend and tilt upward. Step 4: When the vehicle speed V is 0 < V ≤ 40 km / h and it is rain or snow, the ECU controls the front lip to retract, controls the grille to open 30°, the horizontal electric push rod to extend, the vertical electric push rod to extend, and the extended radar probe to extend and tilt downward. Step 5: When the vehicle speed V is 40 < V ≤ 80 km / h and it is rain or snow, the ECU controls the front lip to retract and controls the grille to open 60°, the horizontal electric push rod to extend, the vertical electric push rod to extend, and the extended radar probe to extend and tilt downward. Step 6: When the vehicle speed V is 80 < V ≤ 120 km / h and it is rain or snow, the ECU controls the front lip to extend and controls the grille to open fully. The horizontal electric push rod retracts, and the vertical electric push rod controls the long radar strip to remain horizontal, and the radar probe retracts into the radar hole.

2. The dynamic control method for the automotive radar stealth-aerodynamic drag reduction cooperative structure according to claim 1, characterized in that, The radar housing is also provided with a radar locking ring, which is sleeved on the elongated radar and used to limit the movement of the elongated radar.

3. The dynamic control method for the automotive radar stealth-aerodynamic drag reduction cooperative structure according to claim 1, characterized in that, The horizontal electric push rod is also provided with a push rod pulley at one end located outside the horizontal push rod housing, and the push rod pulley is slidably mounted on a push rod slide rail provided inside the radar housing.

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