EP3785044A2 - Ensemble formant de capteur ayant un élément d'obturation et procédé de fabrication de l'élément d'obturation - Google Patents

Ensemble formant de capteur ayant un élément d'obturation et procédé de fabrication de l'élément d'obturation

Info

Publication number
EP3785044A2
EP3785044A2 EP19723327.3A EP19723327A EP3785044A2 EP 3785044 A2 EP3785044 A2 EP 3785044A2 EP 19723327 A EP19723327 A EP 19723327A EP 3785044 A2 EP3785044 A2 EP 3785044A2
Authority
EP
European Patent Office
Prior art keywords
film
diaphragm element
sensor arrangement
conductor tracks
sensor
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
EP19723327.3A
Other languages
German (de)
English (en)
Inventor
Alexander Kilias
Andrea Kramer
Dirk Legler
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.)
Webasto SE
Original Assignee
Webasto SE
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=66484008&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP3785044(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Webasto SE filed Critical Webasto SE
Publication of EP3785044A2 publication Critical patent/EP3785044A2/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
    • 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
    • G01S7/4039—Means for monitoring or calibrating of parts of a radar system of sensor or antenna obstruction, e.g. dirt- or ice-coating
    • G01S7/4043—Means for monitoring or calibrating of parts of a radar system of sensor or antenna obstruction, e.g. dirt- or ice-coating including means to prevent or remove the obstruction
    • G01S7/4047—Heated dielectric lens, e.g. by heated wire
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00—Cleaning of vehicles
    • B60S1/02—Cleaning windscreens, windows or optical devices
    • B60S1/04—Wipers or the like, e.g. scrapers
    • B60S1/06—Wipers or the like, e.g. scrapers characterised by the drive
    • B60S1/08—Wipers or the like, e.g. scrapers characterised by the drive electrically driven
    • B60S1/0818—Wipers or the like, e.g. scrapers characterised by the drive electrically driven including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like
    • B60S1/0822—Wipers or the like, e.g. scrapers characterised by the drive electrically driven including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like characterized by the arrangement or type of detection means
    • B60S1/0833—Optical rain sensor
    • B60S1/0844—Optical rain sensor including a camera
    • B60S1/0848—Cleaning devices for cameras on vehicle
    • 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
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/88—Lidar systems specially adapted for specific applications
    • G01S17/93—Lidar systems specially adapted for specific applications for anti-collision purposes
    • G01S17/931—Lidar 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
    • G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
    • G01S7/481—Constructional features, e.g. arrangements of optical elements
    • G01S7/4811—Constructional features, e.g. arrangements of optical elements common to transmitter and receiver
    • G01S7/4813—Housing arrangements

Definitions

  • the invention relates to a sensor arrangement of a motor vehicle having the features of the preamble of patent claim 1 and to a method for producing a diaphragm element of a sensor arrangement.
  • a sensor arrangement is known from practice and can be used in a motor vehicle for monitoring a vehicle environment.
  • the sensor arrangement comprises a sensor element which emits electromagnetic radiation, for example in the form of laser radiation, in one or more specific directions, so that the vehicle surroundings, including the road, traffic situation and the like, can be recognized and processed by a system of the vehicle.
  • the sensor element is arranged, for example, in a roof region of the vehicle or else in the region of the vehicle front end and positioned behind a diaphragm element which is permeable to the electromagnetic radiation emitted by the sensor element.
  • the diaphragm element can be made of a plastic material.
  • a heating device may be provided which comprises conductor tracks, which are arranged on the inside of the panel element facing the sensor element.
  • the conductor tracks of the heating device are exposed on the inside of the panel element. Thus, they may be exposed to environmental influences such as moisture, which may impair their functionality.
  • the invention is based on the object, a trained according to the aforementioned type sensor arrangement in which a high reliability of the heating device tion is ensured, as well as to provide a method for producing a diaphragm element of such a sensor arrangement.
  • the diaphragm element which is arranged in front of the sensor element and is transparent to the electromagnetic radiation emitted by the sensor element, carries on its inside, that is to say on its side facing the sensor element, a film which is provided with the conductor tracks. namely on the side remote from the sensor element, so that the conductor tracks are protected by the film and are not exposed to any environmental or weather influences.
  • the conductor tracks are located close to the optionally to be deiced outside of the aperture element, which faces the vehicle environment.
  • the film carries in a preferred embodiment of the sensor arrangement according to the invention at its side facing away from the conductor tracks and thus the sensor element facing antireflection coating.
  • the antireflection coating which is applied to the film before the film is connected to the screen element is particularly specific for the electromagnetic radiation used by the sensor arrangement according to the invention.
  • the antireflective coating is formed from a material that is produced on a polysiloxane basis.
  • the antireflective coating may be made of an indium compound.
  • the antireflective coating is expediently reflective for electromagnetic radiation having a wavelength which is outside a certain wavelength spectrum.
  • the wavelength spectrum for which the antireflective coating acts antireflective covers the wavelength (s) that the radiation emitted by the sensor element has.
  • the surface structure is produced, for example, by a plasma etching process and may have a so-called moth-eye structure, which represents a nanostructure of small suppositories close together.
  • the diaphragm element of the sensor arrangement according to the invention can in particular be produced from a polycarbonate material or else from another material suitable for the respective application.
  • the film of the sensor arrangement according to the invention comprises a polycarbonate material or is manufactured from such a material.
  • the protective coating can consist of a one or two-coat paint system which offers scratch, weather and / or chemical protection.
  • the paint system used may be thermosetting or may be a paint system that cures using UV radiation. It is conceivable that the paint system is applied by a spray process or by a flood coating process.
  • the protective coating has a refractive index which is less than that of the injection-molded plastic material of the diaphragm element.
  • the transmission behavior of the diaphragm element can be improved.
  • the sensor arrangement according to the invention can in principle be arranged at any point of a motor vehicle and designed for different purposes.
  • the sensor arrangement is integrated in a vehicle roof and part of a system for autonomous or semi-autonomous driving of the vehicle in question.
  • the visor element forms an outer skin element of the vehicle roof, that is to say in particular a fixed roof opposite the vehicle body. section.
  • the sensor arrangement is placed on a vehicle roof in the manner of a dome. Then, the diaphragm element forms at least one component of a housing of the sensor arrangement which receives the sensor element.
  • the visor element forms an outer skin element of a vehicle bow or a vehicle rear.
  • the sensor arrangement can then also be part of a distance-keeping system, a parking assistant and / or another safety device of the relevant vehicle.
  • the invention also relates to a method for producing a diaphragm element of a sensor arrangement of a motor vehicle, comprising the following steps: providing a film having a first side and a second side;
  • an antireflection coating is applied to the second side of the film before inserting the film into the mold cavity.
  • the application of the antireflection coating can take place before or after the application of the conductor track to the other side of the film.
  • the printed conductors can be applied or applied to the film by any desired method. It is conceivable to use printing methods, embossing methods or transfer methods for this purpose. Specific examples include screen printing, dispensing, hot stamping and transfer printing. moreover Curing methods suitable for curing the strip conductors, such as laser curing methods, can be used.
  • the antireflective coating is preferably applied over a large area to the second side of the film, for example by a doctor blade method, by a screen printing method or else by a coextrusion method. Subsequently, the
  • Antireflective coating a patterning process such as a plasma etching process are subjected to increase the anti-reflection effect.
  • the application of the conductor tracks can take place on a wide film web or on a film blank whose dimensions correspond to the dimensions of the film or which corresponds to the film which is inserted into the mold cavity.
  • the film or the foil blank is overmolded in such a way that the side on which the conductor tracks are arranged is overmolded by the plastic material.
  • the other side of the film, on which preferably the antireflection coating is arranged, remains free of the plastic material.
  • the method according to the invention is particularly designed so that the film is unwound from a first roll and then the anti-reflection coating is applied over a large area on one side of the film. Subsequently, the film is wound on a second roll. In a further method step, the film is then unwound from the second roller and provided on the side facing away from the antireflection coating with the conductor tracks and contact points for an electrical connection to a vehicle network.
  • the film for producing a film blank having the conductor tracks can be punched, which is then inserted in particular by means of a robot in the injection mold and in the mold cavity of the same with the plastic material is injected.
  • the diaphragm element is preferably provided with a protective coating on the side facing away from the film or film arrangement, in order to protect it against the effects of scratching, weathering and / or chemicals.
  • Embodiments of a sensor arrangement according to the invention and a method for producing a diaphragm element of the sensor arrangement are shown schematically simplified in the drawing and are explained in more detail in the following description. It shows:
  • Figure 1 is a perspective view of a vehicle with integrated in the roof
  • Figure 2 is a perspective view of one of the sensor assemblies
  • FIG. 3 a section through an aperture element of the sensor arrangement
  • FIG. 4 shows a first step in the production of the diaphragm arrangement
  • FIG. 5 shows a second step in the production of the diaphragm arrangement
  • FIG. 6 shows a third step in the production of the diaphragm arrangement
  • FIG. 7 shows a fourth step in the production of the diaphragm arrangement.
  • a motor vehicle 10 which is formed in the present case as a combined vehicle and having a vehicle roof 12, which spans a vehicle interior.
  • the vehicle roof 12 changes into a windshield 14.
  • the vehicle roof 12 is an injection molded part, which is made of a plastic material, in the present case of a polycarbonate material.
  • the motor vehicle 10 is designed to allow autonomous or semi-autonomous driving.
  • four sensor arrangements 16, which represent environmental observation sensors, are formed on the vehicle roof 12.
  • the sensor arrangements are so-called leader sensors, which use laser light as electromagnetic radiation.
  • the sensor arrangements 16 are essentially of the same design and, as shown in FIGS. 2 and 3, each comprise an aperture element 18 which forms a sensor housing in which a sensor element 20 is arranged, which emits the laser light in a measuring direction X, which then transmits the light Run through the aperture element and used to observe the vehicle environment.
  • the diaphragm element 18 comprises an injection-molded core 22 made of a polycarbonate material which carries a film arrangement 26 on its inner side 24 facing the sensor element 20. At its exterior 28 facing the vehicle environment, the polycarbonate core 22 is provided with a protective coating 30, which constitutes a scratch, weather and chemical protection and is formed from a paint system.
  • the film assembly 26 comprises a film 32 made of a polycarbonate material, which is provided on the side facing the core 22 with conductor tracks 34, which constitute a heating device for the diaphragm element 18.
  • an antireflection coating 36 which is formed from a polysiloxane compound, is applied to the film 32.
  • the antireflection coating 36 is structured. In particular, it has a so-called moth-eye structure, which is produced by a plasma etching process.
  • the antireflection coating 36 has an electromagnetic radiation antireflection effect in the wavelength range between 800 nm and 1200 nm. For electromagnetic radiation with wavelengths above 1200 nm and below 800 nm, the antireflection coating 36 has a reflective effect.
  • the film 32 which has a thickness between 100 pm and 400 pm, is provided on a roll 38 and unwound therefrom.
  • the film 32 is then extensively coated on one side with the polysiloxane-based material and held in a container 41 in order to form the antireflection coating 36.
  • the applied material 40 is uniformly applied to the film by means of a doctor blade 43 32 is distributed.
  • the film 32 is wound onto a second roll 42 together with the antireflection coating 36.
  • the roller 42 is then provided to another processing station 44.
  • the foil 32 provided with the antireflection coating 36 is unwound from the second roller 42 and provided with the conductor tracks 34 and contact points on the side facing away from the antireflection coating 36.
  • this is done by a transfer printing process in which laser radiation is used for curing.
  • a screen printing method, a dispensing method, a hot stamping method or the like can be used to apply the printed conductors.
  • the film 32 provided with the tracks 34 including pads and the anti-reflection coating 36 is then wound onto a third roller 46.
  • the roller 46 is provided to a trimming station 48 in which the film 32 provided with the tracks 34 and the anti-reflection coating 36 is unwound and cut on a conveyor belt 50 by means of a punching tool 52 so that foil blanks 54 result corresponding to the respective panel member 18 arranged film assembly 26.
  • the film blanks 54 can be removed from the conveyor belt 50 by means of a transfer robot and inserted as an insert into a mold cavity 56 of an injection mold 58.
  • the injection mold 58 comprises a first mold half 60 and a second mold half 62.
  • the two tool halves 60 and 62 define and limit mold cavity 58 when the mold 58 is closed.
  • the film blank 54 is attached to the mold half 60 when the injection mold 58 is open. Subsequently, the injection molding tool 58 is closed to form the mold cavity 56, whereupon a polycarbonate material for forming the polycarbonate core 22 of the diaphragm element 18 is introduced into the mold cavity 56 via a sprue channel 64.
  • the injection mold 58 is opened and the diaphragm element comprising the film blank 54 or the film arrangement 26 and the core 22 is removed from the mold.
  • the core 22 is provided on the side facing away from the film assembly 26 with the protective coating 30.
  • the application of the protective coating 30 can take place in one or two layers.
  • the material used is formed from a paint system that cures thermally or cures with the help of UV radiation. The order is carried out by a spraying process or a Beflutungs- V experienced.
  • the then resulting aperture element 18 can now be used to manufacture the sensor assembly 16.

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Electromagnetism (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Optical Radar Systems And Details Thereof (AREA)

Abstract

L'invention concerne un ensemble formant capteur d'un véhicule automobile. L'ensemble formant capteur comprend un élément capteur (20) qui émet un rayonnement électromagnétique dans une direction de mesure pour déterminer un signal de mesure, ainsi qu'un élément d'obturation (18) qui est disposé devant l'élément capteur (20) dans la direction de la mesure, qui est une pièce moulée par injection de matière synthétique, qui est perméable au rayonnement électromagnétique et qui comporte une face extérieure dirigées vers l'environnement d'un véhicule et une face intérieure qui est dirigée vers l'élément capteur (20), et un élément chauffant comportant des pistes conductrices (34). Les pistes conductrices (34) sont déposées sur un film (32) qui est formé sur la face intérieure de l'élément d'obturation (18) selon un processus de moulage par injection lors de la fabrication de l'élément d'obturation (18) de sorte que le film (32) pourvu des pistes conductrices (34) fait partie intégrante de l'élément d'obturation (18) obtenu selon un processus de moulage par injection. Les pistes conductrices (34) sont situées du côté du film (32) qui est opposé à l'élément capteur (20).
EP19723327.3A 2018-04-24 2019-04-23 Ensemble formant de capteur ayant un élément d'obturation et procédé de fabrication de l'élément d'obturation Pending EP3785044A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018109884.7A DE102018109884B4 (de) 2018-04-24 2018-04-24 Sensoranordnung mit Blendenelement und Verfahren zur Herstellung des Blendenelements
PCT/EP2019/060332 WO2019206885A2 (fr) 2018-04-24 2019-04-23 Ensemble formant de capteur ayant un élément d'obturation et procédé de fabrication de l'élément d'obturation

Publications (1)

Publication Number Publication Date
EP3785044A2 true EP3785044A2 (fr) 2021-03-03

Family

ID=66484008

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19723327.3A Pending EP3785044A2 (fr) 2018-04-24 2019-04-23 Ensemble formant de capteur ayant un élément d'obturation et procédé de fabrication de l'élément d'obturation

Country Status (7)

Country Link
US (1) US20210239795A1 (fr)
EP (1) EP3785044A2 (fr)
JP (1) JP7015942B2 (fr)
KR (1) KR102426426B1 (fr)
CN (1) CN112166337A (fr)
DE (1) DE102018109884B4 (fr)
WO (1) WO2019206885A2 (fr)

Families Citing this family (5)

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Publication number Priority date Publication date Assignee Title
FR3099436B1 (fr) * 2019-07-29 2021-12-31 Cie Plastic Omnium Se Dispositif de protection pour Lidar de véhicule automobile
DE102019219089A1 (de) * 2019-12-06 2021-06-10 Robert Bosch Gmbh Verfahren und Vorrichtung zum Erkennen von Defekten elektrischer Komponenten eines Kraftfahrzeugs
DE102022106654B4 (de) 2022-03-22 2024-05-23 Webasto SE Sensoranordnung mit Blendenelement und Verfahren zur Herstellung eines Blendenelements einer Sensoranordnung eines Kraftfahrzeugs
DE102022115973A1 (de) 2022-06-27 2023-12-28 Webasto SE Sensormodul zur Anordnung an einem Kraftfahrzeug, Dachanordnung zur Bildung eines Fahrzeugdachs und Verfahren zum Kalibrieren eines Umfeldsensors
DE102022117096A1 (de) 2022-07-08 2024-01-11 Webasto SE Heizeinrichtung für ein Blendenelement einer Sensoranordnung, Sensoranordnung, Dachmodul und Kraftfahrzeug

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Also Published As

Publication number Publication date
KR20200135483A (ko) 2020-12-02
JP7015942B2 (ja) 2022-02-03
DE102018109884B4 (de) 2023-07-27
WO2019206885A2 (fr) 2019-10-31
CN112166337A (zh) 2021-01-01
KR102426426B1 (ko) 2022-07-27
WO2019206885A3 (fr) 2019-12-19
JP2021518917A (ja) 2021-08-05
DE102018109884A1 (de) 2019-10-24
US20210239795A1 (en) 2021-08-05

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