WO2021032599A1 - Module capteur à monter sur un véhicule automobile - Google Patents

Module capteur à monter sur un véhicule automobile Download PDF

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Publication number
WO2021032599A1
WO2021032599A1 PCT/EP2020/072793 EP2020072793W WO2021032599A1 WO 2021032599 A1 WO2021032599 A1 WO 2021032599A1 EP 2020072793 W EP2020072793 W EP 2020072793W WO 2021032599 A1 WO2021032599 A1 WO 2021032599A1
Authority
WO
WIPO (PCT)
Prior art keywords
thin
sensor module
film electrode
module according
sensor
Prior art date
Application number
PCT/EP2020/072793
Other languages
German (de)
English (en)
Inventor
Sascha Dietrich
Johannes Thannheimer
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
Application filed by Webasto SE filed Critical Webasto SE
Publication of WO2021032599A1 publication Critical patent/WO2021032599A1/fr

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
    • 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
    • G01S7/497—Means for monitoring or calibrating
    • G01S2007/4975—Means for monitoring or calibrating of sensor obstruction by, e.g. dirt- or ice-coating, e.g. by reflection measurement on front-screen
    • G01S2007/4977—Means for monitoring or calibrating of sensor obstruction by, e.g. dirt- or ice-coating, e.g. by reflection measurement on front-screen including means to prevent or remove the obstruction
    • 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
    • G01S2013/93273—Sensor installation details on the top of the vehicles

Definitions

  • the invention relates to a sensor module for arrangement on a motor vehicle according to the preamble of patent claim 1.
  • Autonomous or partially autonomous vehicles are becoming more and more widespread in vehicle technology.
  • a large number of environment sensors are required with which the environment of the motor vehicle is recorded and the respective traffic situation is determined from this.
  • a sensor housing in which the environmental sensors are installed is used to protect the environment sensors from harmful environmental influences, for example moisture and air currents.
  • the sensor housing itself can then in turn be attached to the vehicle, for example on the roof.
  • Various environmental sensors also work with emitted laser beams (LIDAR sensor).
  • sensor housings are known in which a light-permeable see-through element is present.
  • the see-through element enables the environment sensor to be protected from negative environmental influences and at the same time enables light to pass through the wall of the sensor housing to the required extent.
  • light permeability means that electromagnetic radiation can pass through in the wavelength range used by the environment sensor.
  • the known environmental sensors work in a wavelength range from 300 nm to 2000 nm.
  • a heating element is provided on the see-through element of the sensor housing, with which the see-through element can be heated.
  • thick-film electrodes For the heating of see-through elements in vehicle construction, thick-film electrodes are known in which several heating wires are attached to the surface of the see-through element. A current flow through these heating wires releases heat so that the see-through element can be kept free of snow, ice and fog.
  • heating the see-through element with heating wires is that these heating wires are themselves opaque and can thus interfere with the field of vision of the environment sensor.
  • manufacture of the heating element by attaching the heating wires to the see-through element is time-consuming and costly.
  • Another disadvantage is the inhomogeneous temperature distribution of this technology, which leads to uneven and delayed defrosting.
  • the efficiency of such systems is limited, since the disadvantage of inhomogeneity is compensated by means of a higher current in order to ensure the desired defrosting behavior in a short time.
  • an inhomogeneous heat distribution leads to mechanical stress in the heated material, which can lead to fatigue and failure.
  • the object of the present invention is therefore to propose a sensor module whose see-through element can be heated with a heating element, which avoids the disadvantages of the prior art described above.
  • the sensor module according to the invention is based on the basic idea that the heating element is designed in the manner of a thin-film electrode.
  • This thin-film electrode can be attached either directly or indirectly, for example using a carrier element, to the outside or inside of the see-through element.
  • the thin-film electrode has at least two contact elements in order to contact the thin-film electrode with the electrical energy supply of the motor vehicle from the vehicle electrical system with the required voltage level.
  • the invention provides that the thin-film electrode has an electrically conductive layer, the silver mano wires and / or indium tin oxide (ITO) and / or carbon nano -Tubes (CNT) includes.
  • ITO indium tin oxide
  • CNT carbon nano -Tubes
  • Conductive layers made from these special materials are translucent and heat up when electrical current flows through them to such an extent that the transparent element can be prevented from icing or misting.
  • Silver nanowires can be synthesized wet-chemically, so that the result is a solution of silver nanowires dispersed in a dispersant. This dispersion can be applied in a simple manner to a surface provided for it. As the dispersant evaporates, a disordered network of silver nanowires is formed, which forms an electrically conductive thin-film electrode.
  • This thin-film electrode made of silver nanowires is translucent and at the same time electrically conductive and can be heated highly effectively by means of a corresponding current flow.
  • Carbon nanotubes are used in the electrically conductive layer of the thin-film electrode is basically arbitrary. It is particularly advantageous if the carbon nanotubes are designed in the manner of carbon nanobuds (CNB). Carbon nanobuds are modifications of carbon in the form of covalently bonded molecules made of single-walled carbon nanotubes and fullerenes. These carbon nanobuds form with suitable deposition a disordered network that is fully conductive and at the same time has sufficient light permeability.
  • the silver nanowires of the thin-film electrode are embedded in a matrix of aluminum-doped zinc oxide.
  • the AZO matrix ensures mechanical fixation of the syllable mano wires on the respective substrate and protects the syllable mano wires from negative external influences, for example oxidation or sulfidization of the syllable mano wires.
  • the nanowires of the thin-film electrode are materially welded to one another at the contact points of the disordered network.
  • the bond between the silver mano wires and the contact points increases the conductivity of the thin-film electrode considerably.
  • the layer of silver mano wires can be heated with electricity after the evaporation of the dispersion until the silver in the contact points melts at least slightly.
  • a surface density of 0.2 to 0.4 g / m 2 is sufficient, if necessary, to form a thin-film electrode with sufficient heating properties.
  • the extremely thin layer thickness of the thin-film electrode with these low surface densities also ensures transparency of the thin-film electrode, which is crucial for the function of the environment sensor.
  • the way in which the thin-film electrode is attached directly or indirectly to the light-permeable see-through element is basically arbitrary.
  • the conductive layer which comprises silver mano wires and / or indium tin oxide and / or carbon nanotubes, is deposited over the entire surface of the see-through element.
  • the conductive layer which comprises silver nanowires and / or indium tin oxide and / or carbon nano-tubes, can also be fixed over the entire surface on a carrier element.
  • the carrier element together with the thin-film electrode then forms a heating element carrier, which in turn can be fastened together on the see-through element.
  • the carrier layer as a carrier for the thin-film electrode, in particular a carrier element made of polymer film can be used, which is made of polycarbonate or polyethylene, for example. Polycarbonate is highly transparent and ensures easy viewing.
  • the carrier layer can be glued to the see-through element with an adhesive layer. In principle, it does not matter whether the thin-film electrode is glued onto the see-through element together with the adhesive layer or whether it remains on the opposite outside of the heating element carrier.
  • the thin-film electrode is attached to a surface facing outward, the thin-film electrode can be protected by a protective layer. This protective layer is applied after the production of the thin-film electrode on the outward-facing side of the thin-film electrode.
  • a protective layer is provided to protect the thin-film electrode, it is advantageous if the area of the protective layer is smaller than the area of the thin-film electrode. As a result of this difference in area, the thin-film electrode protrudes over the protective layer at least in some areas. In this way, these protruding surfaces of the thin-film electrode easily form contacting surfaces on which the thin-film electrode can be electrically contacted and connected to the on-board network. A particularly effective protection of the thin-film electrode is achieved if the protective layer comprises a lacquer layer.
  • a particularly high durability of the protective layer, in particular the protective layer made of silicate lacquer, is achieved if the protective layer is cured with a heat treatment and / or UV radiation after its application.
  • Which type of environment sensors is attached in the sensor housing of the sensor module is basically arbitrary as long as a passage of light through the see-through element of the sensor housing is necessary for the function of the environment sensor.
  • the invention offers particularly great advantages when arranging LIDAR sensors and / or camera sensors and / or multi-camera sensors in the sensor housing of a sensor module.
  • the type of use for which the sensor module is used is still basically arbitrary.
  • the invention offers particularly great advantages for sensor modules in which the sensor module is attached to a roof module to form a vehicle roof.
  • the subject of the invention is therefore also a roof module with a sensor module designed according to the invention.
  • this roof module according to the invention can be used both in passenger cars and in commercial vehicles such as delivery vans or tractors for trucks. It can be designed as a pure fixed roof or also be provided with a roof opening system and thus form a closable roof opening.
  • roof module preferably forms a structural unit which comprises in an integrated manner devices for autonomous driving or for partially autonomous driving supported by vehicle assistance systems and which can be placed on a vehicle shell by a vehicle manufacturer.
  • the invention also relates to a motor vehicle with a sensor module or a roof module of the type described above.
  • a sensor module or a roof module of the type described above.
  • Various embodiments of the invention are shown schematically in the drawing and are explained below by way of example. Show it:
  • FIG. 1 shows a motor vehicle with four sensor modules arranged on a roof module in a schematic view from above;
  • FIG. 2 shows a sensor module according to FIG. 1 in a schematic cross section;
  • FIG. 3 shows the see-through element of the sensor module according to FIG. 2 in a schematic cross section
  • FIG. 4 shows a second embodiment of a see-through element in a schematic cross section
  • FIG. 5 shows the see-through element according to FIG. 4 in a side view
  • FIG. 6 shows a further embodiment of a see-through element in a schematic cross section
  • FIG. 7 shows a further embodiment of a see-through element in a schematic cross section.
  • Figure 1 shows a motor vehicle 1 in a schematic view from above.
  • a roof module 3 is attached to the vehicle body.
  • sensor modules 4 are attached, each of which contains at least one environment sensor, for example a LIDAR sensor.
  • the field sensors built into the sensor modules 4 enable the traffic situation surrounding the motor vehicle to be recorded in order to be able to implement the motor vehicle 1 in an autonomous or partially autonomous manner.
  • FIG. 2 shows the sensor module 4 in a schematic section.
  • the sensor module 4 is shown to the extent that it is necessary to understand the invention.
  • An environment sensor 6 is attached in the water- and dust-tight encapsulated sensor housing 5.
  • the sensor housing 5 itself is attached to the roof module 3.
  • a transparent see-through element 7 is attached to the front of the sensor housing 5, so that light can pass through the see-through element 7 in both directions.
  • FIG. 3 shows the see-through element 7 in cross section.
  • the see-through element 7 comprises a carrier element 8 to which a thin-film electrode 9 made of silver nanowires has been applied.
  • Contacting elements 10 are provided on two side edges of the thin-film electrode 9 in order to be able to connect the thin-film electrode 9 to the electrical power supply of the vehicle electrical system.
  • a protective layer 11 made of lacquer is applied to the outside of the see-through element 7.
  • the silver nanowires in the thin-film electrode 9 form a disordered network which is materially welded at the contact points.
  • the disordered network of silver nanowires is also embedded in a matrix made of aluminum-doped zinc oxide.
  • FIG. 4 shows a second embodiment of a see-through element 12.
  • a thin-film electrode 14 consisting of carbon nanobuds is deposited on a carrier element 13.
  • a protective layer 15 is also attached to the outside of the thin-film electrodes.
  • Figure 5 shows the see-through element 12 in a view from the front. It can be seen that the side surfaces of the carrier element 13, the thin-film electrodes and the protective layer 15 each have a slight difference in area. Due to the difference in area between the thin-film electrode 14 and the protective layer 15, the thin-film electrode 14 projects laterally over the protective layer. The protruding surfaces 16 can thus be used to make contact with the thin-film electrode 14.
  • FIG. 6 shows a further embodiment of a see-through element 17.
  • a thin-film electrode 18 made of indium-tin-oxide and a carrier element 19 form a heating element carrier 20 that is to be manufactured separately glued.
  • FIG. 7 shows a further embodiment of a see-through element 23.
  • the heating element carrier 20, consisting of thin-film electrode 18 and carrier element 19 is glued to the outside of carrier element 22 by means of an adhesive layer 24.
  • a protective layer 25 is applied to the outside of the carrier element 19.
  • Carrier element 14 Thin-film electrode (carbon nanobuds)

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Surface Heating Bodies (AREA)
  • Resistance Heating (AREA)

Abstract

L'invention concerne un module capteur (04) destiné à être monté sur un véhicule automobile (01), comprenant un boîtier (05) dans lequel est disposé au moins un capteur d'environnement (06). Le boîtier (05) de capteur présente au moins un élément transparent transmettant la lumière (07, 12, 17, 23), et l'élément transparent (07, 12, 17, 23) peut être chauffé au moyen d'un élément chauffant. L'élément chauffant est une électrode à couche mince (09, 14, 18) disposée indirectement ou directement sur l'intérieur ou l'extérieur de l'élément transparent (07, 12, 17, 23). Le contact peut être établi entre l'électrode à couche mince (09, 14, 18) et l'alimentation en énergie électrique du véhicule automobile (01) au moyen d'au moins deux éléments de contact (10, 16). L'électrode à couche mince (09, 14, 18) comporte une couche électro-conductrice qui comprend des nanofils d'argent (AgNW) et/ou de l'oxyde d'indium-étain (ITO) et/ou des nanotubes de carbone (CNT) et est chauffée à mesure que le courant électrique s'écoule dans celle-ci.
PCT/EP2020/072793 2019-08-19 2020-08-13 Module capteur à monter sur un véhicule automobile WO2021032599A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019122221.4A DE102019122221A1 (de) 2019-08-19 2019-08-19 Sensormodul zur Anordnung an einem Kraftfahrzeug
DE102019122221.4 2019-08-19

Publications (1)

Publication Number Publication Date
WO2021032599A1 true WO2021032599A1 (fr) 2021-02-25

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Application Number Title Priority Date Filing Date
PCT/EP2020/072793 WO2021032599A1 (fr) 2019-08-19 2020-08-13 Module capteur à monter sur un véhicule automobile

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WO (1) WO2021032599A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115070182A (zh) * 2022-07-28 2022-09-20 龙岩学院 一种银纳米线焊接设备及其使用方法
DE102022106654A1 (de) 2022-03-22 2023-09-28 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
WO2024108770A1 (fr) * 2022-11-21 2024-05-30 福耀玻璃工业集团股份有限公司 Ensemble montant de véhicule automobile et véhicule

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19963003A1 (de) * 1999-12-24 2001-06-28 Bosch Gmbh Robert Kraftfahrzeug-Radarsystem
DE102015004204A1 (de) * 2015-03-31 2015-08-27 Daimler Ag Radom, Radargerät und Fahrzeug mit dem Radom sowie Verfahren zum Betrieb des Radoms
DE102017118538A1 (de) * 2016-08-15 2018-02-15 Ford Global Technologies, Llc Frosterkennung an lidarsensor
WO2018230358A1 (fr) * 2017-06-13 2018-12-20 株式会社デンソー Système d'utilisation d'ondes électromagnétiques

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008033316A1 (de) * 2008-07-16 2010-01-21 Siemens Aktiengesellschaft Heizvorrichtung zur Beheizung einer Glasfläche, insbesondere eines Schutzglases einer Außenkamera
KR101637920B1 (ko) * 2015-01-06 2016-07-08 연세대학교 산학협력단 투명필름히터 및 그의 제조방법

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19963003A1 (de) * 1999-12-24 2001-06-28 Bosch Gmbh Robert Kraftfahrzeug-Radarsystem
DE102015004204A1 (de) * 2015-03-31 2015-08-27 Daimler Ag Radom, Radargerät und Fahrzeug mit dem Radom sowie Verfahren zum Betrieb des Radoms
DE102017118538A1 (de) * 2016-08-15 2018-02-15 Ford Global Technologies, Llc Frosterkennung an lidarsensor
WO2018230358A1 (fr) * 2017-06-13 2018-12-20 株式会社デンソー Système d'utilisation d'ondes électromagnétiques

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022106654A1 (de) 2022-03-22 2023-09-28 Webasto SE Sensoranordnung mit Blendenelement und Verfahren zur Herstellung eines Blendenelements einer Sensoranordnung 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
CN115070182A (zh) * 2022-07-28 2022-09-20 龙岩学院 一种银纳米线焊接设备及其使用方法
WO2024108770A1 (fr) * 2022-11-21 2024-05-30 福耀玻璃工业集团股份有限公司 Ensemble montant de véhicule automobile et véhicule

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