EP4562443A1 - Pièce de véhicule, ensemble capteur, véhicule automobile et procédé et ensemble de films pour améliorer le degré de transmission d'une pièce de véhicule - Google Patents

Pièce de véhicule, ensemble capteur, véhicule automobile et procédé et ensemble de films pour améliorer le degré de transmission d'une pièce de véhicule

Info

Publication number
EP4562443A1
EP4562443A1 EP23738051.4A EP23738051A EP4562443A1 EP 4562443 A1 EP4562443 A1 EP 4562443A1 EP 23738051 A EP23738051 A EP 23738051A EP 4562443 A1 EP4562443 A1 EP 4562443A1
Authority
EP
European Patent Office
Prior art keywords
coating
vehicle part
vehicle
reflectance
electromagnetic waves
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP23738051.4A
Other languages
German (de)
English (en)
Inventor
Thomas Albrecht
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SUSONITY Commercial GmbH
Original Assignee
Merck Patent GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Merck Patent GmbH filed Critical Merck Patent GmbH
Publication of EP4562443A1 publication Critical patent/EP4562443A1/fr
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
    • G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/027—Constructional details of housings, e.g. form, type, material or ruggedness
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/40—Means for monitoring or calibrating
    • G01S7/4004—Means for monitoring or calibrating of parts of a radar system
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/32—Adaptation for use in or on road or rail vehicles
    • H01Q1/3208—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used
    • H01Q1/3233—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used particular used as part of a sensor or in a security system, e.g. for automotive radar, navigation systems
    • 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
    • H01Q1/421—Means for correcting aberrations introduced by a radome
    • 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
    • H01Q1/422—Housings not intimately mechanically associated with radiating elements, e.g. radome comprising two or more layers of dielectric material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2420/00—Indexing codes relating to the type of sensors based on the principle of their operation
    • B60W2420/40—Photo, light or radio wave sensitive means, e.g. infrared sensors
    • B60W2420/408—Radar; Laser, e.g. lidar
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
    • G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
    • G01S2013/9327—Sensor installation details
    • G01S2013/93275—Sensor installation details in the bumper area

Definitions

  • the invention relates to a vehicle part comprising a carrier part, a sensor arrangement comprising a vehicle chassis, at least one transmitter and detector arranged on the vehicle chassis and a vehicle part attached in the area of the transmitter and/or detector, a motor vehicle with at least one radar-based distance sensor and a method and a Set of foils for improving a transmittance for electromagnetic waves of a predetermined frequency, in particular radar waves.
  • a body plastic component for a motor vehicle which has a support body with a base body made of plastic.
  • a varnish, in particular with at least two effect varnish layers, can be applied to the base body.
  • the body plastic component has an attenuation for radiation in a radar frequency range between 75 GHz and 85 GHz, at least in a radar transparency section, the absolute value of which is less than 3 dB in a single pass.
  • a vehicle part includes: a support member made of a polymer material having a first surface and a second surface substantially parallel thereto; a first coating applied to the first surface of the carrier part, which has a first reflectance R1 for electromagnetic waves of a predetermined frequency spectrum, in particular radar waves; and a second coating applied in at least a portion of the second surface of the carrier part, which has a second reflectance R2 for electromagnetic waves of the predetermined frequency spectrum, the second reflectance R2 being matched to the first reflectance R1 such that the carrier part, the first coating and the second coating forms a resonator for the electromagnetic waves.
  • the first coating can be a layer of lacquer or a painted or colored plastic film.
  • the plastic film can, for example, be colored with effect pigments.
  • the film is usually self-adhesive and is simply stuck onto the corresponding vehicle part.
  • the inventor has recognized, among other things, that by applying an additional, reflective layer to a second surface of a vehicle part, in particular a back of a carrier part painted or foiled on the front, such as a bumper, a resonator for electromagnetic waves, in particular radar waves, is formed can, and that this can lead to an increased degree of transmission or reduced degree of reflection of the vehicle part for the electromagnetic waves in a predetermined frequency spectrum or in a range around a given working or center frequency.
  • the reflectance R2 is used Coating on the second surface is matched to the reflectance R1 of the first coating on the first surface, for example for a given working or center frequency or the entire frequency spectrum.
  • the vehicle part has a transmittance of more than 50 percent, preferably more than 80 percent, for example in a frequency spectrum between 60 and 100 GHz, in particular between 75 and 85 GHz.
  • This frequency spectrum is used, among other things, for radar-based anti-collision radars and/or adaptive cruise control systems.
  • the carrier part can be made from a plastic material and have a thickness in a range of 1.5 to 5 mm. Such material thicknesses achieve the rigidity required in vehicle construction and are at the same time on the order of the wavelength of radar waves.
  • the first coating comprises an effect lacquer layer with effect pigments, which, for example, has a thickness between 12 and 20 ⁇ m.
  • the first coating can have a total thickness in a range between 80 and 130 ⁇ m.
  • Such paint layers and thicknesses achieve an appearance desired in vehicle construction and have a degree of reflection that enables the construction of a resonator.
  • the second coating has a similar structure to the first coating.
  • the equivalence of the two coatings can be ensured particularly easily, for example by applying the same paint in the same thickness to the second side of the vehicle part.
  • the second coating has a thin metallized plastic film or metal film glued to the back of the vehicle part.
  • a vehicle part can be produced particularly easily and inexpensively by gluing on a film section with the required degree of reflection.
  • the use of preferably self-adhesive films also enables simple retrofitting of existing vehicle parts, for example after determining a degree of reflection of an existing paint finish on the first surface.
  • Such a vehicle part is particularly suitable for producing a sensor arrangement, in which at least one transmitter for transmitting electromagnetic waves of a predetermined frequency, in particular radar waves, and at least one arranged detector for detecting electromagnetic waves of the predetermined frequency, in particular reflected radar waves, are arranged on a vehicle chassis and are covered by the vehicle part.
  • Such a vehicle part or such a sensor arrangement is particularly suitable for use in a motor vehicle with a radar-based sensor.
  • a method for improving a transmittance of a vehicle part for electromagnetic waves of a predetermined frequency, in particular radar waves is disclosed.
  • the procedure includes the steps: Determining a reflectance of a first coating of a first surface of a vehicle part, in particular a paint layer applied to an outside of the vehicle part; and
  • a set of films for improving a transmittance for electromagnetic waves of a predetermined frequency, in particular radar waves is disclosed.
  • the film set comprises a plurality of self-adhesive sections of a metal film or a metallized plastic film, the sections differing in their degree of reflectance and, optionally, in their thickness.
  • Such a film set makes it possible to produce a vehicle part or a sensor arrangement of the type mentioned above in a simple manner, in particular by selecting a film section with suitable physical properties.
  • Figure 1 is a schematic representation of a sensor arrangement
  • Figure 2 shows a cross section through a vehicle part according to an embodiment of the disclosure
  • Figures 3A to 4B different samples for determining a transmittance and reflectance of coated polymer materials
  • Figure 8 shows schematically the steps of a method for improving a transmittance of a vehicle part.
  • radar-based distance sensors are increasingly being installed in motor vehicles to prevent accidents, improve driving comfort and ultimately enable self-driving cars.
  • Other applications such as radar-based sensors for detecting seeds or liquids in commercial vehicles such as trucks or agricultural machinery, are also possible.
  • radar-based sensors are usually installed behind vehicle parts or covers made of a polymer material, for example bumpers in the form of an integrated bumper of a motor vehicle or in Panels of commercial vehicles, arranged.
  • the polymer materials used to produce such vehicle parts have only a relatively low degree of reflectance and a low degree of absorption for radar waves.
  • vehicle parts are usually covered with a layer of paint or a painted, preferably self-adhesive, plastic film, or an already pigmented, preferably self-adhesive, plastic film, which correspond to the paintwork of the rest of the vehicle.
  • plastic films or lacquer layers which in particular contain metallic effect pigments, have a higher degree of reflection and therefore hinder the transmission and reception of reflected radar waves.
  • Figure 1 shows a schematic cross section through a sensor arrangement 4 of a motor vehicle, which is otherwise not shown, in particular a car or truck.
  • the sensor arrangement 1 comprises a part of a vehicle chassis 2, a radar-based sensor in the form of a distance sensor 3 and a vehicle part 4 covering the distance sensor 3.
  • the part of the chassis 2 is a front vehicle front, which is made of a metal material.
  • the vehicle part 4 is a bumper made essentially from a polymer material, in particular a plastic material, in the form of an integrated bumper.
  • the vehicle part 4 can also be a pure cover part for a radar-based sensor. Such covers are also known as radomes.
  • the distance sensor 3 includes a transmitter 3a for emitting electromagnetic waves 5 of a predetermined frequency spectrum.
  • a frequency spectrum represents a coherent frequency range, for example between a maximum frequency and a minimum frequency or a range with a predetermined bandwidth around a given frequency.
  • the transmitter 3a emits radar waves 5a in a frequency spectrum between 70 and 80 GHz.
  • Such electromagnetic radar waves 5a are reflected by vehicles in front or other obstacles and are considered reflected electromagnetic radar waves 5b are transmitted back to a detector 3b of the distance sensor 3.
  • the electromagnetic waves 5 pass through the vehicle part 4 twice.
  • the transmitter and detector can also be one and the same component.
  • the vehicle part 4 typically has a complex, rounded shape, it has surfaces that are essentially parallel to one another, at least in the area in which the radar waves 5a and 5b penetrate the vehicle part 4. If the outer surface of the vehicle part 4 on the right in FIG - The noise ratio of the distance sensor 3 is significantly reduced. In particular, the part of the outgoing radar waves that is reflected back inwards can disrupt or even completely saturate the sensor.
  • FIG. 2 shows an enlarged section of the vehicle part 4 according to Figure 1. It should be noted that the illustration in FIG. 2 only serves as an explanation and does not reflect the actual dimensions of vehicle part 4.
  • the vehicle part 4 has a support part 6 with two mutually parallel surfaces 7 and 8.
  • the surface 7 on the right in Figure 2 points away from a distance sensor 3, not shown in Figure 2, and the second surface 8 opposite it points towards it the distance sensor 3.
  • the first surface 7 is therefore typically an outside of the vehicle part 4 and the second surface 8 is an inside of the vehicle part 4.
  • a first coating 9 is arranged on the first surface 7.
  • this is a lacquer layer or film 12, which includes a large number of effect pigments 13.
  • the effect pigments 13 in particular ensure an aesthetically pleasing effect (for example metallic effect, brightness and/or color flop, possibly glitter) of the lacquer layer 12.
  • the effect pigments 13 are, for example, metallic effect pigments in the form of microscopic aluminum plates a thickness of less than 1 pm. Such aluminum flakes can be produced, for example, by flat-rolling small aluminum spheres and stirring them into suitable carrier lacquers.
  • non-metallic effect pigments are also known. Such effect pigments are based on platelet-shaped substrates, such as natural or synthetic mica, talc, SiO2 platelets, A Os platelets, glass platelets, iron oxide platelets, graphite platelets, which are completely coated with one or more metal oxides.
  • Conductive primers are also often used for the paint layer 12, which reflect a further portion of the electromagnetic radiation. Without further measures, the coating 12 and in particular the effect pigments 13 contained therein as well as a primer significantly increase the degree of reflection of the first coating 9. A significant proportion of electromagnetic waves 5 that hit the vehicle part 4 would thus be reflected.
  • a second coating 10 is arranged on the second surface 8.
  • the second layer 10 is, for example, a glued-on film, in particular a self-adhesive metal film or metallized plastic film 14.
  • a controlled shift in the resonance frequency can also be brought about by controlling its thickness. 2
  • the second coating 10 does not necessarily cover the entire second surface 8 of the vehicle part 4. It is sufficient if the second coating 10 is arranged at least in a section 15 of the second surface 8 which is affected by the electromagnetic waves 5 is to be penetrated, for example an area of the vehicle part 4 behind which a distance sensor 3 is arranged. Alternatively, the second coating 10 can also cover the entire second surface 8.
  • the reflectance of the second coating 10 is closely matched to the reflectance of the first coating 9.
  • the first coating 9, the carrier part 6 and the second coating 10 together form a resonator 11.
  • the resonator 11 If the dimensions of the resonator 11 are matched to the frequency of the electromagnetic waves 5, the resonator 11 as a whole has a significantly reduced degree of reflection compared to the degrees of reflection of the individual layers 9 and 14. This means that the electromagnetic waves 5 can penetrate the vehicle part 4 essentially undamped. In other words, the vehicle part 4 is largely transparent to the electromagnetic waves 5 in the resonance range.
  • the carrier part 6, which is made of a polymer material has, for example, a thickness D of 2 to 3 mm.
  • the first layer 9 or the second coating 10 have thicknesses of approximately 20 pm and have a reflectance of approximately 10 to 20 percent for the frequencies of 70 to 80 GHz that are typical for radar-based distance sensors. This corresponds to a wavelength in air of approximately 4.28 to 3.75 mm. This corresponds to a thickness D of the carrier part 6 of approximately 2 mm in approximately half the wavelength of the electromagnetic waves 5.
  • the resonator 11 essentially represents a relatively weak Fabry-Perot interferometer, for example with a quality of the resonator of less than 100, in particular less than 20, for example 15 or 10.
  • the quality Q of a resonator with resonance frequency fo and bandwidth applies Af:
  • n is the refractive index of the material used and m is a positive natural number.
  • the transmittance T of a Fabry-Perot interferometer depends, among other things, on the first reflectance R1 of the first coating 9 and the second reflectance R2 of the second coating 10. Neglecting absorption losses, the following applies to the maximum transmission of the resonator in the case of resonance:
  • One way to coordinate the reflectances R1 and R2 of the coatings 9 and 10 is to first determine a reflectance R1 of the coating 12.
  • the vehicle part 4 that has already been painted on one side can first be measured.
  • a film can be selected from metallized plastic films 14 of possibly different thicknesses, the reflectance R2 of which comes closest to the reflectance R1 of the first coating 9.
  • a desired shift in the resonance range can be achieved by selecting its thickness.
  • the selected film 14 is then glued to the back 8 of the carrier part 6.
  • a film set with several film sections with different physical properties can be used for this purpose.
  • the film sections can be arranged and marked in the form of a matrix, with film sections in a column having different degrees of reflection and the same thicknesses and film sections in a row having the same degrees of reflection and different thicknesses.
  • Matching coatings 9 and 10 consists of:
  • Carrier part 6 is to be provided on both sides with comparable layers of paint. How Beforehand, the painting can only be done in the area 15 of the sensor 3 or over the entire surface.
  • the sample 0F0R consists of a plastic plate that is not shown in the figures and is uncoated on both sides.
  • this is a 3 mm thick plate made of a polycarbonate with the trade name Makrolon®, which has the electromagnetic properties of plastics that are used, for example, for bumpers.
  • the sample 2F0R according to Figure 3A only has a one-sided, simple lacquer layer 12 with a thickness of approximately 13 ⁇ m on the first surface 7. Such a thickness is typical for a painted motor vehicle part 4.
  • the lacquer used comprises approximately 18 percent mass concentration of aluminum pigments in the solid paint (18 percent PMC aluminum effect pigments), which corresponds to a very high pigmentation of a metallic paintwork on motor vehicles. This sample is used, among other things, to demonstrate the reflection or transmission behavior of a conventional vehicle part 4 that is only painted on one side.
  • the sample 2F2R according to FIG. 3B is coated on both sides with a simple lacquer layer 12 approximately 13 ⁇ m thick.
  • both surfaces 7 and 8 of the carrier part 6 are painted with the same vehicle paint including metallic effect pigments 13.
  • 4A and 4B show two further samples 4F0R and 4F4R, the surfaces 7 and 8 of which are provided with a double layer of lacquer 12 with a total thickness of approximately 27 ⁇ m. This is done at In the sample 4F0R according to FIG. 4A, only the first surface 7 is again painted, while in the sample 4F4R according to FIG. 4B, the first surface 7 and the second surface 8 are painted in the same way.
  • the uncoated plastic material has a reflectance of 0 to 20 percent and a transmittance of approximately 75 to 95 percent in the relevant frequency spectrum between 60 and 90 GHz.
  • the lowest reflectance is in a frequency spectrum that is typically not used by radar sensors below 65 GHz. The values missing from 100 percent can be explained in particular by absorption by the plastic material.
  • the measured transmission and reflectance values for the two samples 2F0R and 2F2R according to Figures 3A and 3B are compared with one another.
  • the transmittance has a maximum of over 85 percent near a frequency of 77 GHz. Accordingly, the reflection at this frequency has a minimum of almost 0 percent (-24 dB).
  • the vehicle part 4 therefore causes practically no disturbing reflections in a frequency spectrum typical of radar sensors.
  • the transmitted Signal proportion is significantly increased, so that a signal-to-noise ratio is significantly improved.
  • FIGS. 7A and 7B Measurement results for samples 4F0R and 4F4R according to FIGS. 4A and 4B are shown in FIGS. 7A and 7B.
  • the transmission maximum or the reflection minimum shifts by doubling the lacquer layer 12 towards lower working frequencies, in particular in the range of 72 GHz.
  • the minimum reflection in the range around 72 GHz is only a few percent and is therefore also suitable for radar-based distance sensors 3.
  • the reflected signal component of the sample 4F4R which is painted on both sides, is around -14 dB, around 10 dB below the only Sample 4F0R painted on one side with a reflected signal component of approximately -4 dB.
  • the resonance frequency of the vehicle part 4 can be adapted to the frequency of the electromagnetic waves 5 used, in particular radar waves 5a and 5b.
  • the thickness D of the carrier part 6 is available as a further optimization parameter.
  • the degree of reflection or transmittance of the coated vehicle part 4 can be further optimized if the degree of reflection R2 of the second coating 10 is chosen to be slightly smaller than the degree of reflection R1 of the first coating 9 in order to at least partially compensate for the absorption caused by the carrier part 6.
  • the reflectance R2 of the second coating 10 is approximately 80 to 99 percent, preferably 90 to 98 percent, for example 95 percent, of the reflectance R1 of the first coating 9.
  • Figure 8 shows schematically the steps of a method for improving a transmittance of a vehicle part 4.
  • a reflectance R1 of a first coating 9 is first determined.
  • the reflectance R1 of the vehicle part 4 can be determined using appropriate theoretical models or based on known series of measurements. Finally, only the parameters used for painting can be recorded without explicitly recording the first reflectance R1.
  • a second coating 10 is applied to an opposite surface 8, the reflectance R2 of the second coating 10 being chosen so that it essentially corresponds to the first reflectance R1.
  • this can be done either by sticking a corresponding film section onto the second surface 8, in particular a self-adhesive metallized plastic film 14, or by painting at least a section 15 of the second surface 8. If essentially the same parameters are selected for painting, such as a layer thickness of a paint layer, the explicit determination of the degree of reflectance can be dispensed with in practice, since the type of reflection of such paint layers 12 largely corresponds.

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Security & Cryptography (AREA)
  • Electromagnetism (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

L'invention concerne une pièce de véhicule (4) comprenant une partie de support (6) qui est constituée d'un matériau polymère et qui comporte une première surface (7) et une seconde surface (8) qui est sensiblement parallèle à celle-ci ; un premier revêtement (9) qui est appliqué sur la première surface (7) de la partie de support (6) et qui présente un premier degré de réflexion R1 pour des ondes électromagnétiques (5) d'un spectre de fréquence spécifié, en particulier des ondes radar (5a, 5b) ; et un second revêtement (10) qui est appliqué sur la seconde surface (8) de la partie de support (6) et qui présente un second degré de réflexion R2 pour des ondes électromagnétiques (5) du spectre de fréquence spécifié. Le second degré de réflexion R2 correspond au premier degré de réflexion R1 de sorte que la partie de support (6), le premier revêtement (9) et le second revêtement (10) forment un résonateur (11) pour les ondes électromagnétiques (5). L'invention concerne en outre un ensemble capteur, un véhicule automobile et un procédé pour améliorer le degré de transmission d'une pièce de véhicule.
EP23738051.4A 2022-07-25 2023-07-12 Pièce de véhicule, ensemble capteur, véhicule automobile et procédé et ensemble de films pour améliorer le degré de transmission d'une pièce de véhicule Pending EP4562443A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP22186798 2022-07-25
PCT/EP2023/069283 WO2024022813A1 (fr) 2022-07-25 2023-07-12 Pièce de véhicule, ensemble capteur, véhicule automobile et procédé et ensemble de films pour améliorer le degré de transmission d'une pièce de véhicule

Publications (1)

Publication Number Publication Date
EP4562443A1 true EP4562443A1 (fr) 2025-06-04

Family

ID=82742885

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23738051.4A Pending EP4562443A1 (fr) 2022-07-25 2023-07-12 Pièce de véhicule, ensemble capteur, véhicule automobile et procédé et ensemble de films pour améliorer le degré de transmission d'une pièce de véhicule

Country Status (5)

Country Link
EP (1) EP4562443A1 (fr)
JP (1) JP2025524897A (fr)
KR (1) KR20250043451A (fr)
CN (1) CN119604778A (fr)
WO (1) WO2024022813A1 (fr)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009029763A1 (de) 2009-06-18 2010-12-23 Rehau Ag + Co. Karosserie-Kunststoffbauteil für ein Kraftfahrzeug
DE102013010309A1 (de) * 2013-06-19 2014-03-27 Daimler Ag Antennenabdeckung und Verfahren zu deren Herstellung
DE102013221055A1 (de) * 2013-10-17 2015-04-23 Robert Bosch Gmbh Kombination aus Radarsensor und Verkleidungsteil für ein Kraftfahrzeug
KR102829317B1 (ko) * 2019-12-16 2025-07-03 현대자동차주식회사 차량용 레이더의 전자기파 투과모듈
WO2021209834A1 (fr) * 2020-04-17 2021-10-21 3M Innovative Properties Company Feuille réduisant la réflexion d'ondes radio et élément de véhicule
DE102020213946B3 (de) * 2020-11-05 2021-10-07 Volkswagen Aktiengesellschaft Verfahren zum Herstellen eines Verkleidungselements, Verkleidungselement und Radarsensoreinheit mit einem Verkleidungselement

Also Published As

Publication number Publication date
KR20250043451A (ko) 2025-03-28
CN119604778A (zh) 2025-03-11
WO2024022813A1 (fr) 2024-02-01
JP2025524897A (ja) 2025-08-01

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