WO2017031607A1 - 汽车自适应主动巡航系统雷达的覆盖件 - Google Patents

汽车自适应主动巡航系统雷达的覆盖件 Download PDF

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Publication number
WO2017031607A1
WO2017031607A1 PCT/CN2015/000667 CN2015000667W WO2017031607A1 WO 2017031607 A1 WO2017031607 A1 WO 2017031607A1 CN 2015000667 W CN2015000667 W CN 2015000667W WO 2017031607 A1 WO2017031607 A1 WO 2017031607A1
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radar
cover body
cover
acc
automobile
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PCT/CN2015/000667
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English (en)
French (fr)
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胡光远
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宁波邦盛汽车零部件有限公司
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/005—Manufacturers' emblems, name plates, bonnet ornaments, mascots or the like; Mounting means therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome

Definitions

  • the invention relates to an automobile component, in particular to a cover of an automobile adaptive active cruise system radar.
  • Automobile Adaptive Cruise Control (ACC) function that is, when the vehicle is running, when there is no vehicle ahead, it will follow the driver's set speed. When there is a vehicle in front, it will be preset according to the driver. The distance automatically adjusts the speed of the vehicle to maintain the distance from the preceding vehicle, so that the driven vehicle dynamically maintains the distance from the preceding vehicle.
  • the driver's foot does not need to control the brake pedal and the accelerator pedal when the driver drives the vehicle, and the feet can be liberated, which can reduce the driving fatigue and better enjoy the driving pleasure.
  • ACC radar cover In the automotive industry, in order to avoid the extreme weather conditions such as rain and wind, the radar of the ACC system is subject to interference and the radar signal is seriously deviated, which affects the function and even failure of the ACC system. At the same time, in order to prevent the radar of the ACC system from being physically damaged, Chemically corroded or stolen, and considering the design requirements of the car, a cover will be installed in front of the radar of the ACC system, such as car signs, signs, logos, covers, etc., with paint layers or special metal layers. Plastic parts (hereinafter referred to as ACC radar cover).
  • ACC radar cover has strict and strict ACC radar wave penetration test standard requirements, so as to ensure that ACC radar cover has excellent radar wave penetration performance, otherwise it will directly affect the radar wave transmission and reception function of the system, and finally A car safety accident occurs when the driver uses the ACC function.
  • ACC radar covers are defined as automotive safety parts. It is required to use 100% of special inspection equipment to conduct ACC radar wave penetration test before shipment. The inspection data of each part is archived and 100% traceable. Sex. Due to the particularity of the ACC radar wave, the ACC radar cover The requirements are not only to meet the performance requirements of the appearance, size, mechanical properties or corrosion resistance of general automotive exterior parts, but more importantly, the stringent standard requirements for radar wave penetration. However, according to the design method of common parts, it is impossible to design and develop ACC radar cover parts that meet the requirements of relevant radar wave penetration test standards. However, the design related to such ACC radar cover parts of such vehicles is still in the blank or exploration stage.
  • the technical problem to be solved by the present invention is to provide a cover for an automobile adaptive active cruise system radar, which can effectively avoid the attenuation of the radar wave emitted by the ACC radar when passing through the cover body. Amount, greatly improving the penetration of radar waves.
  • a cover member of a vehicle adaptive active cruise system radar comprising a cover body, the cover body is arc-shaped, and the front end surface of the cover body is convex
  • the surface of the curved surface has a radius of curvature R ⁇ 21 mm.
  • the angle between the cover body and the front end surface of the ACC radar is 0° to 24°.
  • the radar wave emitted by the ACC radar passes through the cover body and forms a radar wave envelope region, the center line of the radar wave envelope region and the rear end surface of the cover body
  • the vertical distance B between the intersection point and the front end surface of the ACC radar is 18 mm to 48 mm.
  • the cover body is fixed to the front grille of the automobile by a plurality of mounting feet, and the plurality of mounting feet are spaced apart at a periphery of a rear end of the cover body.
  • each of the mounting feet comprises an integrally disposed connecting portion and a buckle portion, wherein the connecting portion is integrally laterally connected at a rear end of the cover body, and the buckle portion is vertically
  • the connecting portion is disposed, and the buckle portion is fixedly connected to the front grille of the automobile.
  • the present invention has the advantages that the cover of the automobile adaptive active cruise system radar disclosed in the present invention effectively avoids by designing and defining the radius of curvature of the front end surface of the cover body by R ⁇ 21 mm.
  • the attenuation of the radar wave emitted by the ACC radar through the cover body greatly improves the penetration of the radar wave.
  • the cover of the invention can control the attenuation of the radar wave to 1.3 to 1.75 dB, completely
  • the invention meets the requirements of the automotive industry with an attenuation of less than 2.0 dB; the invention further defines that the angle A between the cover body and the front end face of the ACC radar is 0° to 24°, and the center line and coverage of the radar wave envelope region
  • the vertical distance B between the intersection of the rear end faces of the body and the front end face of the ACC radar is 18 mm to 48 mm, thereby ensuring the excellent penetration of radar waves.
  • the cover of the automobile adaptive active cruise system radar disclosed by the invention can be applied to different brands of automobiles and different models of the same brand automobile, meet the standard requirements of different vehicles for radar wave penetration, and fill the automobile adaptive active cruise system.
  • the blank design of the radar cover and the blank in the manufacturing field provide reliable technical support for the realization of the adaptive active cruise function of the automobile, and can avoid the world famous automobile OEMs such as Volkswagen, General Motors, Toyota, Nissan and Nissan, as well as all domestic independent brands and Each demand unit wastes a large amount of human and material resources and development costs invested in the development of ACC radar covers, which greatly saves resources and product development costs.
  • Figure 1 is a front view (partial) of the effect of the ACC radar cover after installation of the embodiment
  • Figure 2 is a cross-sectional view taken along line A-A of Figure 1;
  • Fig. 3 is a schematic view showing the structure of a detecting device for detecting the amount of attenuation of a radar wave by a cover member.
  • Embodiment 1 The cover of the automobile adaptive active cruise system radar, as shown in FIG. 1 and FIG. 2, includes a cover body 1, the cover body 1 is curved, and the front end surface 11 of the cover body 1 is a convex curved surface.
  • the surface of the cover body 1 can be formed into a paint layer or a special metal film layer that does not affect the passage of radar waves by the existing spraying and coating processes in the art; after installation,
  • the cover body 1 is fixed to the front grille 3 of the vehicle by a plurality of mounting feet 2, and a plurality of mounting feet 2 are spaced apart from the periphery of the rear end of the cover body 1, each mounting leg 2 including an integrally provided connecting portion 21 and a latching portion 22.
  • the connecting portion 21 is integrally connected to the rear end of the cover body 1 in a laterally connected manner, and the latching portion 22 is disposed at the vertical connecting portion 21, and the latching portion 22 is fixedly connected to the front grille 3 of the automobile;
  • the ACC is mounted at the rear of the covering body 1
  • the radar 4 the angle A between the cover body 1 and the front end surface of the ACC radar 4 is 0°, and the radar wave emitted by the ACC radar 4 passes through the cover body 1 and forms a radar wave envelope region 5, and the radar wave envelope region 5
  • the vertical distance B ACC radar front end surface 4 is 18mm.
  • Embodiment 2 to Embodiment 27 The structure of the cover of the automobile adaptive active cruise system radar of Embodiment 1 is the same, except that the specific value of at least one of the range R, the angle A, and the vertical distance B is different.
  • Comparative Example 1 to Comparative Example 18 In comparison with Examples 1 to 27, 18 comparative examples were selected which are identical in structure to the cover of the automotive adaptive active cruise system radar of Embodiment 1, except that the pole is The specific value of at least one of the difference R, the angle A, and the vertical distance B is different.
  • 1 is a cover to be inspected
  • 2 is a tooling bracket for mounting a fixed cover 1 which is adjustable in mounting angle of the cover member 1
  • 3 is a radar wave transmitting end for simulating and transmitting and ACC Radar consistent Radar wave
  • 4 is a radar wave receiving end for receiving radar waves emitted by the radar wave transmitting end 3 and passing through the cover member
  • 5 is a computer, which is respectively connected with the radar wave transmitting end 3 and the radar wave receiving end 4, The entire detection device is controlled and the detection result of the attenuation amount of the radar wave by the cover 1 is output.
  • the specific parameters of the range R, the angle A and the vertical distance B of the cover members of Examples 1 to 27 and the cover members of Comparative Examples 1 to 18 and the detection results of the attenuation amount of the radar wave are shown in Table 1. .
  • the radar wave penetration performance of the cover is judged according to the attenuation standard of less than 2.0 dB required by the automotive industry. The results are shown in Table 1.
  • the cover of the present invention can control the attenuation of the radar wave to be 1.3 to 1.75 dB, which fully satisfies the requirements of the automotive industry below 2.0 dB.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

汽车自适应主动巡航系统雷达的覆盖件，包括覆盖件本体（1），覆盖件本体（1）为弧状，覆盖件本体（1）的前端面（11）为外凸的曲面，曲面的曲率半径的极差R<21mm，安装后，覆盖件本体（1）固定于汽车前格栅（3），覆盖件本体（1）的后方安装有ACC雷达（4）；通过设计并限定覆盖件本体（1）的前端面（11）的曲率半径的极差R<21mm，有效避免了ACC雷达（4）发出的雷达波穿过覆盖件本体时的衰减量，大幅提高了雷达波的可穿透性，经检测，覆盖件可将雷达波的衰减量控制在1.3～1.75dB，完全满足汽车行业的低于2.0dB的衰减量要求；覆盖件能够应用于不同品牌的汽车以及同品牌汽车的不同车型。

Description

汽车自适应主动巡航系统雷达的覆盖件 技术领域
本发明涉及一种汽车零部件，具体是一种汽车自适应主动巡航系统雷达的覆盖件。
背景技术
汽车自适应主动巡航(即Adaptive Cruise Control，简称ACC)功能，即，在车辆行驶过程中，前方无车辆时将按照驾驶员设定的车速前行，前方有车辆时将会根据驾驶员预设的距离自动进行车速调整从而保持与前车的距离，使所驾驶的车辆动态保持与前车距离。车辆安装自适应主动巡航系统后，驾驶员驾驶车辆时，驾驶员的脚无需控制制动踏板和加速踏板，双脚得以解放，可降低驾驶疲劳程度，更好地享受驾驶乐趣。
在汽车行业，为避免在下雨、刮风等极端天气状况下，因ACC系统的雷达受到干扰和雷达信号出现严重偏差而影响ACC系统功能，甚至失效，同时为了防止ACC系统的雷达受到物理损伤、化学腐蚀或被盗，并且考虑到汽车外观设计的要求，会在ACC系统的雷达的前方安装一个覆盖件，如汽车标志、标牌、徽标、盖板等这类有油漆层或特殊金属膜层的塑料零部件(以下简称ACC雷达覆盖件)。对于ACC雷达覆盖件有着严格苛刻的ACC雷达波可穿透性检测标准要求，从而保证ACC雷达覆盖件具有优异的雷达波可穿透性能，否则将直接影响该系统雷达波发射和接收功能，最终导致驾驶员使用ACC功能时汽车发生行驶安全事故。
在汽车行业，ACC雷达覆盖件被定义为汽车安全件，要求出厂前需要采用专用检测设备100％对其进行ACC雷达波穿透性检测，对每件零件的检测数据存档并保证100％可追溯性。由于ACC雷达波的特殊性，对ACC雷达覆盖件的 要求不仅仅是满足一般普通汽车外饰零部件外观、尺寸、机械性能或抗腐蚀等性能要求，更重要的是对雷达波可穿透性的严苛的标准要求。但是按照普通零件的设计方法无法设计开发出满足相关雷达波穿透性检测标准要求的ACC雷达覆盖件，而目前行业内对这类汽车ACC雷达覆盖件相关的设计还处于空白或是摸索阶段，没有形成系统性具体的设计技术指导，也未定义具体的设计参数和技术边界，无法有效满足该类汽车零部件的设计需求，因此该类零部件开发失败风险非常大，导致了大量的设计、检测验证、设备、材料以及模具工装等人力物力资源的浪费。
发明内容
本发明所要解决的技术问题是：针对现有技术的不足，提供一种汽车自适应主动巡航系统雷达的覆盖件，该覆盖件能够有效避免ACC雷达发出的雷达波穿过覆盖件本体时的衰减量，大幅提高雷达波的可穿透性。
本发明解决上述技术问题所采用的技术方案为：汽车自适应主动巡航系统雷达的覆盖件，包括覆盖件本体，所述的覆盖件本体为弧状，所述的覆盖件本体的前端面为外凸的曲面，所述的曲面的曲率半径的极差R＜21mm，安装后，所述的覆盖件本体固定于汽车前格栅，所述的覆盖件本体的后方安装有ACC雷达。
作为优选，所述的覆盖件本体与所述的ACC雷达的前端面的夹角A为0°～24°。
作为优选，所述的ACC雷达发出的雷达波穿过所述的覆盖件本体并形成雷达波包络区，所述的雷达波包络区的中心线和所述的覆盖件本体的后端面的交点与所述的ACC雷达的前端面的垂直距离B为18mm～48mm。
作为优选，所述的覆盖件本体通过若干安装脚固定于所述的汽车前格栅，所述的若干安装脚间隔设置在所述的覆盖件本体的后端的周缘。
作为优选，每个所述的安装脚包括一体设置的连接部和卡扣部，所述的连接部一体横向连接设置在所述的覆盖件本体的后端，所述的卡扣部垂直所述的连接部设置，所述的卡扣部固定连接在所述的汽车前格栅上。
与现有技术相比，本发明的优点在于：本发明公开的汽车自适应主动巡航系统雷达的覆盖件，通过设计并限定覆盖件本体的前端面的曲率半径的极差R＜21mm，有效避免了ACC雷达发出的雷达波穿过覆盖件本体时的衰减量，大幅提高了雷达波的可穿透性，经检测，本发明覆盖件可将雷达波的衰减量控制在1.3～1.75dB，完全满足汽车行业的低于2.0dB的衰减量要求；本发明通过进一步限定覆盖件本体与ACC雷达的前端面的夹角A为0°～24°，以及，雷达波包络区的中心线和覆盖件本体的后端面的交点与ACC雷达的前端面的垂直距离B为18mm～48mm，从而确保了雷达波的优异的可穿透性的实现。本发明公开的汽车自适应主动巡航系统雷达的覆盖件能够应用于不同品牌的汽车以及同品牌汽车的不同车型，满足不同汽车对雷达波可穿透性的标准要求，填补汽车自适应主动巡航系统雷达的覆盖件设计及制造领域的空白，为汽车自适应主动巡航功能的实现提供了可靠的技术支撑，可避免大众、通用、丰田、本田、日产等全球著名汽车主机厂和国内所有自主品牌及各需求单位对ACC雷达覆盖件开发投入的大量的人力物力资源及开发成本的浪费，大幅节约资源和产品开发成本。
附图说明
图1为实施例的ACC雷达覆盖件安装后效果正视图(局部)；
图2为图1中A-A剖视图；
图3为检测覆盖件对雷达波的衰减量的检测装置的结构示意图。
具体实施方式
以下结合附图实施例对本发明作进一步详细描述。
实施例1：汽车自适应主动巡航系统雷达的覆盖件，如图1和图2所示，包括覆盖件本体1，覆盖件本体1为弧状，覆盖件本体1的前端面11为外凸的曲面，该曲面的曲率半径的极差R为0mm，该覆盖件本体1的表面可通过本领域的现有喷涂及镀膜工艺形成油漆层或不影响雷达波穿过的特殊金属膜层；安装后，覆盖件本体1通过若干安装脚2固定于汽车前格栅3，若干安装脚2间隔设置在覆盖件本体1的后端的周缘，每个安装脚2包括一体设置的连接部21和卡扣部22，连接部21一体横向连接设置在覆盖件本体1的后端，卡扣部22垂直连接部21设置，卡扣部22固定连接在汽车前格栅3上；覆盖件本体1的后方安装有ACC雷达4，覆盖件本体1与ACC雷达4的前端面的夹角A为0°，ACC雷达4发出的雷达波穿过覆盖件本体1并形成雷达波包络区5，雷达波包络区5的中心线和覆盖件本体1的后端面12的交点与ACC雷达4的前端面的垂直距离B为18mm。
实施例2～实施例27：与实施例1的汽车自适应主动巡航系统雷达的覆盖件的结构相同，不同之处在于极差R、夹角A和垂直距离B中的至少一项的具体数值不同。
对比例1～对比例18：为与实施例1～27进行对比，选择了18个对比例，其与实施例1的汽车自适应主动巡航系统雷达的覆盖件的结构相同，不同之处在于极差R、夹角A和垂直距离B中的至少一项的具体数值不同。
对于实施例1～实施例27的覆盖件以及对比例1～对比例18的覆盖件，分别模拟实际使用状态，检测其对雷达波的衰减量，检测装置的结构示意图见图3。图3中，1为待检测的覆盖件；2为工装支架，用于安装固定覆盖件1，其对覆盖件1的安装角度可调；3为雷达波发射端，用于模拟并发射与ACC雷达一致 的雷达波；4为雷达波接收端，用于接收经雷达波发射端3发出并穿过覆盖件的雷达波；5为计算机，分别与雷达波发射端3和雷达波接收端4连接，用于控制整个检测装置并输出覆盖件1对雷达波的衰减量的检测结果。
实施例1～实施例27的覆盖件以及对比例1～对比例18的覆盖件的极差R、夹角A和垂直距离B的具体参数选择及对雷达波的衰减量的检测结果见表1。根据汽车行业要求的低于2.0dB的衰减量标准对覆盖件的雷达波可穿透性能是否合格进行判定，结果见表1。从表1可见，本发明覆盖件可将雷达波的衰减量控制在1.3～1.75dB，完全满足汽车行业的低于2.0dB的衰减量要求。
表1 ACC雷达覆盖件的设计参数及雷达波的衰减量检测及判定结果
Figure PCTCN2015000667-appb-000001
Figure PCTCN2015000667-appb-000002

Claims (5)

  1. 汽车自适应主动巡航系统雷达的覆盖件，包括覆盖件本体，其特征在于：所述的覆盖件本体为弧状，所述的覆盖件本体的前端面为外凸的曲面，所述的曲面的曲率半径的极差R＜21mm，安装后，所述的覆盖件本体固定于汽车前格栅，所述的覆盖件本体的后方安装有ACC雷达。
  2. 根据权利要求1所述的汽车自适应主动巡航系统雷达的覆盖件，其特征在于：所述的覆盖件本体与所述的ACC雷达的前端面的夹角A为0°～24°。
  3. 根据权利要求1或2所述的汽车自适应主动巡航系统雷达的覆盖件，其特征在于：所述的ACC雷达发出的雷达波穿过所述的覆盖件本体并形成雷达波包络区，所述的雷达波包络区的中心线和所述的覆盖件本体的后端面的交点与所述的ACC雷达的前端面的垂直距离B为18mm～48mm。
  4. 根据权利要求1所述的汽车自适应主动巡航系统雷达的覆盖件，其特征在于：所述的覆盖件本体通过若干安装脚固定于所述的汽车前格栅，所述的若干安装脚间隔设置在所述的覆盖件本体的后端的周缘。
  5. 根据权利要求4所述的汽车自适应主动巡航系统雷达的覆盖件，其特征在于：每个所述的安装脚包括一体设置的连接部和卡扣部，所述的连接部一体横向连接设置在所述的覆盖件本体的后端，所述的卡扣部垂直所述的连接部设置，所述的卡扣部固定连接在所述的汽车前格栅上。
PCT/CN2015/000667 2015-08-26 2015-09-28 汽车自适应主动巡航系统雷达的覆盖件 WO2017031607A1 (zh)

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