EP2877872A1 - Variante d'intégration d'un capteur à ultrasons dissimulé dans un véhicule - Google Patents

Variante d'intégration d'un capteur à ultrasons dissimulé dans un véhicule

Info

Publication number
EP2877872A1
EP2877872A1 EP13740276.4A EP13740276A EP2877872A1 EP 2877872 A1 EP2877872 A1 EP 2877872A1 EP 13740276 A EP13740276 A EP 13740276A EP 2877872 A1 EP2877872 A1 EP 2877872A1
Authority
EP
European Patent Office
Prior art keywords
ultrasonic sensor
ultrasonic
motor vehicle
bumper
sensor arrangement
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.)
Withdrawn
Application number
EP13740276.4A
Other languages
German (de)
English (en)
Inventor
Paul-David Rostocki
Frank Schwitters
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.)
Valeo Schalter und Sensoren GmbH
Original Assignee
Valeo Schalter und Sensoren 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 Valeo Schalter und Sensoren GmbH filed Critical Valeo Schalter und Sensoren GmbH
Publication of EP2877872A1 publication Critical patent/EP2877872A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO 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
    • G01S15/00Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/88Sonar systems specially adapted for specific applications
    • G01S15/93Sonar systems specially adapted for specific applications for anti-collision purposes
    • G01S15/931Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/48Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects combined with, or convertible into, other devices or objects, e.g. bumpers combined with road brushes, bumpers convertible into beds
    • B60R19/483Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects combined with, or convertible into, other devices or objects, e.g. bumpers combined with road brushes, bumpers convertible into beds with obstacle sensors of electric or electronic type
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO 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
    • G01S15/00Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/02Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves
    • G01S15/06Systems determining the position data of a target
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO 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
    • G01S7/00Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/52Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
    • G01S7/521Constructional features
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO 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
    • G01S7/00Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/52Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
    • G01S7/54Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00 with receivers spaced apart
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO 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
    • G01S15/00Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/87Combinations of sonar systems
    • G01S15/876Combination of several spaced transmitters or receivers of known location for determining the position of a transponder or a reflector
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO 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
    • G01S15/00Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/88Sonar systems specially adapted for specific applications
    • G01S15/93Sonar systems specially adapted for specific applications for anti-collision purposes
    • G01S15/931Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles
    • G01S2015/932Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles for parking operations
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO 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
    • G01S15/00Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/88Sonar systems specially adapted for specific applications
    • G01S15/93Sonar systems specially adapted for specific applications for anti-collision purposes
    • G01S15/931Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles
    • G01S2015/937Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles sensor installation details
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO 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
    • G01S15/00Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/88Sonar systems specially adapted for specific applications
    • G01S15/93Sonar systems specially adapted for specific applications for anti-collision purposes
    • G01S15/931Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles
    • G01S2015/937Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles sensor installation details
    • G01S2015/938Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles sensor installation details in the bumper area

Definitions

  • the invention relates to an ultrasonic sensor arrangement for a motor vehicle, comprising a covering part and an ultrasonic sensor, which is arranged with its membrane on a rear side of the covering part, so that the membrane is designed to emit and / or receive ultrasonic signals through the covering part.
  • the invention also relates to a motor vehicle having such an ultrasonic sensor arrangement.
  • Ultrasonic sensors are already state of the art. They are usually used for a so-called parking aid of a motor vehicle, by means of which the driver of the motor vehicle is supported during maneuvering, namely in particular when parking the motor vehicle in a parking space and when parking out of the parking space. It is known to arrange a plurality of such ultrasonic sensors both on the front bumper and on the rear bumper. With help of a
  • Ultrasonic sensors can be measured distances between the motor vehicle on the one hand and the obstacles located in its surroundings on the other hand.
  • An ultrasound sensor emits an ultrasound signal which reflects at an obstacle in the surroundings of the vehicle and then returns to the ultrasound sensor, namely in the form of an echo.
  • the distance can be determined.
  • ultrasonic sensors are installed unobstructed in bumpers. This means that they are arranged in recesses in the bumper and are visible on the outside.
  • the bumper can be provided here with a plurality of such continuous recesses, in which then the respective cup-shaped membranes of the ultrasonic sensors are used.
  • the ultrasonic sensor itself is fastened to the rear of the bumper via a housing and with the aid of an additional holder.
  • hidden or hidden built-in ultrasonic sensors are known. These are thus not visible from the outside when looking at the bumper and covered by the bumper itself.
  • the ultrasonic signals are transmitted through the material of the bumper or received.
  • the front surface of the cup-shaped membrane of the ultrasonic sensor optionally via a
  • the interest is directed to such a hidden or hidden
  • Ultrasonic sensor not possible, for example due to the design of the bumper. Because with the installation of the ultrasonic sensor at this point also strict requirements for the mounting angle are connected, one would have to place the ultrasonic sensor in a recess in the bumper and thus visible at this point. However, this would be incompatible with the goal of invisibly placing all ultrasonic sensors.
  • the trim part is a fender for the motor vehicle.
  • the ultrasonic sensor is invisible or hidden on the back of the fender arranged so that the membrane of the ultrasonic sensor for transmitting and / or
  • Receiving the ultrasonic signals is formed by the material of the fender.
  • the invention is based on the recognition that in the prior art a hidden
  • the ultrasonic sensor for automatic parking assistance systems is therefore not possible because the same ultrasonic sensor must be arranged in the edge region of the bumper and exactly at this point the installation of the sensor due to the required installation angle does not always succeed.
  • the invention now goes the way to attach the ultrasonic sensor to a fender of the motor vehicle and that at the rear of the fender, so that the ultrasonic sensor is hidden behind the fender.
  • the ultrasonic sensor can detect the lateral area adjacent to the motor vehicle, and it is possible to detect parking spaces with a hidden ultrasonic sensor, which is the main function of an automatic
  • the cowling, so the fender made of plastic, so that the membrane of the ultrasonic sensor is disposed on the back of the plastic material.
  • a reliable propagation of the ultrasonic waves is made possible.
  • the ultrasonic sensor assembly further comprises a bumper for the motor vehicle and a second ultrasonic sensor, which is arranged with its membrane on a rear side of the bumper.
  • the membrane of the second ultrasonic sensor transmits and / or receives the ultrasonic signals through the bumper.
  • the first and the second ultrasonic sensor sensors of the same construction or identical sensors are the same in the uninstalled state
  • Ultrasonic sensors cross measurements are carried out in which the one Ultrasonic sensor transmits ultrasonic signals and the other ultrasonic sensor receives the signals.
  • the exact position of an obstacle relative to the vehicle can be determined.
  • a frequency of the ultrasound signals emitted by the first ultrasound sensor is equal to a frequency of the ultrasound signals emitted by the second ultrasound sensor.
  • Reception behavior of the built-behind the fender ultrasonic sensor corresponds to the transmission and reception behavior of the built-behind the bumper ultrasonic sensor.
  • the above cross measurements can be made possible;
  • the evaluation of the received ultrasonic signals of the two ultrasonic sensors is possible without much computational effort.
  • the fender is formed so that the transmission frequencies of the two ultrasonic sensors are the same.
  • the fender may be formed from the same material as the bumper, namely, in particular made of plastic. This has the advantage that the transmission and reception properties of the two ultrasonic sensors remain the same even at different temperatures, so that the transmission and reception behavior of the first ultrasonic sensor, regardless of the prevailing ambient temperature corresponds to the transmission and reception behavior of the second ultrasonic sensor. If, in fact, the vibration characteristics of the bumper change - for example as a result of an altered modulus of elasticity - the vibration characteristics of the mudguard also change at the same time because the same mudguard is made of the same material.
  • the mudguard has the same thickness as the bumper in the region of the second
  • the said thickness can be for example 3 mm.
  • a motor vehicle according to the invention comprises an inventive
  • Ultrasonic sensor array The preferred embodiments presented with reference to the ultrasonic sensor arrangement according to the invention and their advantages apply correspondingly to the motor vehicle according to the invention.
  • motor vehicle 1 An illustrated in the figure motor vehicle 1 is a in the embodiment
  • the motor vehicle 1 includes an ultrasonic sensor arrangement 2, which in the present case is part of an automatic parking aid system 3.
  • the ultrasonic sensor arrangement 2 which in the present case is part of an automatic parking aid system 3.
  • Parking assistance system supports the driver when parking in a parking space.
  • the parking assistance system 3 can detect parking spaces and calculate a parking path along which the motor vehicle 1 can be parked in the parking area. The driving of the motor vehicle 1 in the parking space is then automatically or semi-automatically.
  • the driver needs the automatic
  • the parking assistance system 3 assumes both the longitudinal guidance and the transverse guidance of the motor vehicle 1. In semi-automatic systems, however, the driver needs to accelerate and decelerate, while the system takes over, for example, the transverse guidance.
  • the ultrasonic sensor arrangement 2 comprises a left and a right front fender 4, 5 as covering parts of the motor vehicle 1, as well as a front and a rear bumper 6, 7 as further covering parts of the motor vehicle 1.
  • the ultrasonic sensor assembly 2 also includes a rear left fender 8 and a rear right fender 9 as fairing parts. Furthermore, the ultrasound sensor arrangement 2 comprises a large number of ultrasound sensors, the number of which is shown by way of example only and by way of example in the exemplary embodiment. At each Fender 4, 5, 8, 9 is an ultrasonic sensor 10, 1 1, 12, 13 (first ultrasonic sensors) arranged, while the front bumper 6 four
  • Ultrasonic sensors 14 and the rear bumper 7 also four
  • Ultrasonic sensors 15 (second ultrasonic sensors) are arranged.
  • the ultrasonic sensors may be located only behind the front fenders 4, 5, and the rear fenders 8, 9 may be free of such sensors or vice versa.
  • Covering 4 to 9 arranged so that the respective membrane rests against this back and the ultrasonic waves are transmitted through the material of the respective trim part 4 to 9 therethrough.
  • All ultrasonic sensors 10 to 15 are identical sensors or sensors of the same design and also have the same resonant frequencies in the uninstalled state.
  • the trim parts 4 to 9 also have the same thicknesses. Overall, therefore, all the ultrasonic sensors 10 to 15 have the same transmission and reception characteristics or are operated with the same transmission frequency.
  • All ultrasonic sensors 10 to 15 are electrically coupled to a control device 16, which is for example a microcontroller.
  • the control device 16 determines the distances to the obstacles on the basis of the received signals of the ultrasonic sensors 10 to 15 and can in particular be based on the signals of the lateral
  • Ultrasonic sensors 10, 1 1, 12, 13 also detect the parking spaces. If a parking space is detected, then the control device 16 calculates a parking path or a trajectory along which the motor vehicle 1 can be guided into the detected parking space. By issuing corresponding control signals to a drive and / or steering device 17, the parking operation can then be carried out automatically.
  • the measured distances the controller 16 also with the help of a
  • This output device 18 is for example a loudspeaker and / or a display.

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Mechanical Engineering (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

L'invention concerne un agencement de capteur à ultrasons (2) destiné à un véhicule à moteur (1) comprenant une pièce d'habillage (4, 5, 8, 9) et un premier capteur à ultrasons (10 à 13) qui est disposé avec sa membrane sur une face arrière de la pièce d'habillage (4, 5, 8, 9) de telle façon que la membrane est configurée pour envoyer et/ou recevoir des signaux ultrasonores à travers la pièce d'habillage (4, 5, 8, 9), laquelle pièce d'habillage (4, 5, 8, 9) est un garde-boue (4, 5, 8, 9) du véhicule à moteur (1).
EP13740276.4A 2012-07-24 2013-07-23 Variante d'intégration d'un capteur à ultrasons dissimulé dans un véhicule Withdrawn EP2877872A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012106691.4A DE102012106691A1 (de) 2012-07-24 2012-07-24 Alternativer Einbau eines verdeckten Ultraschallsensors im Kraftfahrzeug
PCT/EP2013/065507 WO2014016293A1 (fr) 2012-07-24 2013-07-23 Variante d'intégration d'un capteur à ultrasons dissimulé dans un véhicule

Publications (1)

Publication Number Publication Date
EP2877872A1 true EP2877872A1 (fr) 2015-06-03

Family

ID=48874290

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13740276.4A Withdrawn EP2877872A1 (fr) 2012-07-24 2013-07-23 Variante d'intégration d'un capteur à ultrasons dissimulé dans un véhicule

Country Status (5)

Country Link
US (1) US9377531B2 (fr)
EP (1) EP2877872A1 (fr)
CN (1) CN104737032B (fr)
DE (1) DE102012106691A1 (fr)
WO (1) WO2014016293A1 (fr)

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WO2014016293A1 (fr) 2014-01-30
US9377531B2 (en) 2016-06-28
CN104737032B (zh) 2017-05-24
CN104737032A (zh) 2015-06-24
US20150177378A1 (en) 2015-06-25

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