WO2019101434A1 - Anordnung für ein kraftfahrzeug mit einem ultraschallsensor und mit einem dämpfungselement, welches armierungselemente aufweist sowie vorrichtung - Google Patents
Anordnung für ein kraftfahrzeug mit einem ultraschallsensor und mit einem dämpfungselement, welches armierungselemente aufweist sowie vorrichtung Download PDFInfo
- Publication number
- WO2019101434A1 WO2019101434A1 PCT/EP2018/077927 EP2018077927W WO2019101434A1 WO 2019101434 A1 WO2019101434 A1 WO 2019101434A1 EP 2018077927 W EP2018077927 W EP 2018077927W WO 2019101434 A1 WO2019101434 A1 WO 2019101434A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- damping element
- arrangement
- ultrasonic sensor
- reinforcing elements
- membrane
- 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.)
- Ceased
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
- G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
- G01S7/521—Constructional features
-
- 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
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/88—Sonar systems specially adapted for specific applications
- G01S15/93—Sonar systems specially adapted for specific applications for anti-collision purposes
- G01S15/931—Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/162—Selection of materials
-
- 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
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/88—Sonar systems specially adapted for specific applications
- G01S15/93—Sonar systems specially adapted for specific applications for anti-collision purposes
- G01S15/931—Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles
- G01S2015/937—Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles sensor installation details
Definitions
- the present invention relates to an arrangement with an ultrasonic sensor for a motor vehicle, which for concealed installation on a trim part of
- the ultrasonic sensor has a vibratable membrane for emitting and / or receiving ultrasonic signals. By means of the membrane, ultrasonic signals can be transmitted to the covering part.
- Ultrasonic sensor has a damping element, which is arranged circumferentially around a longitudinal axis of the membrane, so that vibrations of the trim part in the installed state can be damped. Furthermore, the invention relates to a device with an arrangement.
- damping materials for example, bitumen, heavy films, high polymers or butyl rubber.
- bitumen heavy films
- high polymers high polymers
- butyl rubber has a very high attenuation in the ultrasonic range in a wide temperature range.
- the disadvantage here however, at temperatures above room temperature (about 21 ° C), the butyl rubber is getting softer. This has the consequence that the vibration energy is not in the entire depth of the
- Damping material can penetrate but only in the boundary layers to
- Body component is effective.
- US 2017/0059697 A1 discloses an ultrasonic sensor arrangement with concealed ultrasonic sensor.
- a coupling element is arranged between the ultrasonic sensor, in particular the membrane, and the inner surface of the trim part.
- Coupling element may comprise a matrix material which is reinforced with a filling. Furthermore, the ultrasonic sensor arrangement has a damping element which is placed against the inner surface of the trim part. The damping element is arranged around the membrane and formed of a material. The object of the present invention is to provide an arrangement and a device, by means of which over a wide temperature range, an improved damping of vibrations can be performed.
- An aspect of the invention relates to an arrangement for a motor vehicle with a
- the ultrasonic sensor is for concealed installation on one
- the ultrasonic sensor has a vibratable membrane for emitting and / or receiving
- the arrangement comprises a damping element, which is arranged around a longitudinal axis of the membrane circumferentially and around the ultrasonic sensor around, wherein at least the membrane is defined by a recess of the
- Damping element extends through, wherein by means of the damping element
- Vibrations of the trim part in the installed state are damped.
- the damping element has reinforcing elements.
- deeper regions of the damping element can be excited, for example, with a temperature increase in the material of the damping element and a consequent reduction in the rigidity of the material.
- the dead time of the ultrasonic sensor can thereby be reduced and, at the same time, an improved damping of vibrations can be carried out over a wide temperature range.
- the damping element has a base material and the
- Armairesetti are formed from a different material to the base material.
- the reinforcing elements are contained in particular in the base material. Furthermore, it is provided in particular that unwanted vibrations of the
- dead time of the ultrasonic sensor is meant in particular the time required until the ultrasonic sensor is ready to receive after the transmission process.
- the ultrasonic sensor preferably has a separate element from the damping element
- Coupling element by means of which improved the ultrasonic signals can be transmitted from the membrane to the cowling.
- the coupling element is arranged in particular between the membrane and the covering part.
- the coupling element and the damping element are different components of the arrangement and differ in particular both from their installation position within the
- the damping element is arranged in particular axially overlapping with the membrane. It can be provided that the damping element, the membrane is arranged on the outer circumference of the membrane about the longitudinal axis with a predetermined distance encompassing.
- the coupling element is plate-like or disc-like and in particular arranged on the front side of the membrane. The coupling element in particular has no recess and is not axially overlapping with the membrane.
- the reinforcing elements can be distributed homogeneously in the damping element. This can improve the
- Vibration energy can be introduced in the entire damping element and the lower lying regions of the damping element can be achieved improved, so that an improved damping of the vibrations can be performed.
- the damping element has hollow spheres as reinforcing elements.
- the hollow balls have a higher rigidity than the damping element and can thus better absorb the vibrations. This makes it possible in particular that the ultrasonic sensor can be used over a wide temperature range, since the vibration energy, in particular the unwanted vibrations, improved can be passed to the hollow balls and thus the damping element can dampen these vibrations improved.
- the damping element has fibers as reinforcing elements.
- the vibration energy can be distributed improved throughout the damping element. This also allows the lower lying regions of the damping element by means of the passing of the
- Vibrational energy to the fibers can be achieved. Furthermore, the processing of fibers in the damping element is very simple, since even with the production of the damping element, the fibers can be taken into account.
- the above-mentioned fibers have a high modulus of elasticity over a wide temperature range, which means that these
- the reinforcing elements have a coefficient of elasticity greater than 1000 N / mm 2 .
- the reinforcing elements on a higher rigidity than the damping material, whereby the vibrations can be improved damped.
- the base material of the damping element may be formed from butyl rubber.
- butyl rubber has a very high attenuation in the ultrasonic range over a large
- damping element with the reinforcing elements within a temperature range of -30 ° C to +90 ° C at least an attenuation of -250 dB, especially for structure-borne sound waves in
- Ultrasonic frequency range exhibit.
- the ultrasonic sensor is designed for motor vehicles, and motor vehicles in particular in these
- the damping element and the reinforcing elements have a high attenuation in this temperature range.
- the attenuation in the present case is at least -250db, so that the
- Vibrations, in particular the unwanted vibrations, of the trim part improved can be reduced.
- At least the shape of the reinforcing elements and / or the position of the reinforcing elements in the damping element is adapted to a resonant frequency of the ultrasound sensor.
- the shape of the reinforcing elements and / the position of the reinforcing elements, and the number of reinforcing elements, in the damping element is designed such that in the
- Resonant frequency of the ultrasonic sensor enters a maximum attenuation. Since in particular the ultrasonic sensor, in particular the emitted ultrasonic signals, and the trim part are tuned to the resonance frequency, it is particularly advantageous, although the shape of the reinforcing elements and / or the position of the
- the recess of the damping element is annular.
- the damping element can be arranged in particular around the membrane around whereby the unwanted vibrations relative to the membrane can be improved attenuated, so that the dead time of the membrane after the transmission to the receiving process and after the reception process can be improved improved until the transmission process.
- the unwanted vibrations can be damped, in particular for the membrane.
- the ultrasonic sensor has at least one holding element, with which the ultrasonic sensor is concealed on the
- Covering be arranged and decoupled from vibrations of the trim panel.
- the unwanted vibrations are transmitted from the cowling to the damping element whereby the ultrasonic sensor, in particular the membrane, is decoupled from these vibrations, whereby an improved operation can be realized.
- the device comprises an arrangement according to one of the preceding aspects and a Covering part for a motor vehicle and at least one ultrasonic sensor.
- the ultrasonic sensor is arranged concealed on the cowling, so that the
- Ultrasonic sensor for emitting ultrasound signals through the cowling and therethrough or for receiving echo signals through the cowling is arranged therethrough.
- Yet another aspect of the invention relates to a motor vehicle having a device.
- the motor vehicle is designed in particular as a passenger car.
- Embodiments of the device and the motor vehicle to view Embodiments of the device and the motor vehicle to view.
- Fig. 1 is a schematic plan view of a motor vehicle with a
- Fig. 2 is a schematic side view of an Au swin approximate shape of a
- FIG. 4 is a schematic perspective view of an embodiment of a
- Fig. 5 is a temperature-attenuation diagram of an embodiment of the
- the motor vehicle 1 shows a motor vehicle 1.
- the motor vehicle 1 is in the present
- Embodiment designed as a passenger car The motor vehicle 1 comprises a driver assistance system 2.
- a driver assistance system 2 With the driver assistance system 2, for example, an object 3 which is located in an environment 4 of the motor vehicle 1 can be detected.
- a distance between the motor vehicle 1 and the object 3 can be determined by means of the driver assistance system 2.
- the driver assistance system 2 comprises at least one arrangement 5.
- the arrangement 5 in turn has at least one ultrasonic sensor 5a.
- the arrangement 5 may also have further ultrasonic sensors 5a.
- the ultrasonic sensor 5a comprises a transmitting device 6, by means of which at least one ultrasonic signal 8, in particular a plurality of ultrasonic signals 8, can be emitted.
- the arrangement 5 is presently arranged on a front region of the motor vehicle 1.
- the arrangement 5 can also be arranged on other areas, for example on a rear area or a side area of the motor vehicle 1. The following example is therefore not exhaustive, but is merely illustrative.
- predetermined detection area E or a predetermined
- the arrangement 5 comprises a receiving device 7, by means of which reflected ultrasonic signals as echo signals 9, which were reflected by the object 3, can be received in particular via the membrane 13.
- Receiving device 7 so reflected by the object 3 echo signals 9 can be received as a received signal. Furthermore, the arrangement 5 a
- Control device 10 which may be formed for example by a microcontroller and / or a digital signal processor.
- the driver assistance system 2 further comprises a control device 1 1, for example, by a
- the electronic control unit (ECU-electronic control unit) of the motor vehicle 1 may be formed.
- the control device 1 1 is connected to the arrangement 5 for data transmission.
- the data transmission can, for example, via the data bus of the
- FIG. 2 shows the ultrasonic sensor 5a in a side view, which is suitable for concealed installation on a trim part 15 (FIG. 3).
- the ultrasonic sensor 5a has a coupling element 12, which bears against the covering part 15, by means of which ultrasonic signals 8 can be emitted and / or received by the membrane 13 of the ultrasonic sensor 5a.
- the coupling element 12 By means of the diaphragm 13 and the coupling element 12, ultrasonic signals 8 can be transmitted to the trim part 15.
- the coupling element 12 By means of the diaphragm 13 and the coupling element 12, ultrasonic signals 8 can be transmitted to the trim part 15.
- the latching elements R are in particular formed on an outer side 23 of the ultrasonic sensor 5a.
- Fig. 3 shows a schematic side view of an example of a built
- Ultrasonic sensor 5a at least in subcomponents.
- the ultrasonic sensor 5 a is arranged on a rear side 16 of the trim part 15.
- the trim part 15 may be formed in particular as a bumper of the motor vehicle 1.
- the membrane 13 is arranged in a circle around the ultrasonic sensor 5a, a damping element 17, which is in particular annular.
- the damping element 17 is arranged in particular on the rear side 16.
- the damping element 17 is arranged circumferentially about the longitudinal axis L of the membrane 13 and around the ultrasonic sensor 5a.
- the membrane 13 extends through a recess 31 of the damping element 17.
- the recess 31 may be formed in particular annular.
- Covering part 15 are attenuated to the ultrasonic sensor 5a.
- the coupling element 12 is in particular between the membrane 13 and the
- the coupling element 12 and the damping element 17 are different components of the arrangement 5 and differ
- the damping element 17 is arranged in particular axially overlapping with the membrane 13. It can be provided that the damping element 17, the membrane 13 is arranged on the outer circumference of the membrane 13 around the longitudinal axis L with a predetermined distance A encompassing.
- the coupling element 12 is in particular plate-like or disc-shaped and in particular arranged on the front side of the membrane 13. The coupling element 12 has in particular no recess 31 and is not axially overlapping with the membrane thirteenth
- the ultrasonic sensor 5a is connected to the trim part 15 via at least one retaining element.
- the holding elements can be connected to the latching elements R, for example.
- the further damping elements may be provided, in particular, for the fact that vibrations of the ultrasonic sensor 5a to the
- Covering part 15 are reduced or vibrations of the
- Covering part 15 to the ultrasonic sensor 5a can be prevented. Furthermore, it can be provided, in particular, that the ultrasonic sensor 5 a has a thick-wall region 21 and a thin-wall region 22.
- the membrane 13 may have, in particular in the thin-wall region 22, a piezoelectric element 24 which can be electrically actuated, and the electrical actuation of the piezoelectric element 24 may cause the membrane 13 to oscillate.
- the ultrasonic signals 8 can thereby be generated.
- the echo signals 9 can be received via the diaphragm 13 and the piezoelectric element 24 and converted into electrical signals.
- the damping element 17 has reinforcing elements 25.
- the damping element 17 is made of a base material and the
- Reinforcing elements 25 formed from a different material to the base material.
- the reinforcing elements 25 are contained in particular in the base material.
- the base material of the damping element 17 may be formed of butyl rubber, for example.
- the reinforcing elements 25 may in particular have a coefficient of elasticity greater than 1000 N / mm 2 .
- the reinforcing elements 25 are formed as hollow balls 26.
- Trim panel 15, in particular after the transmission process, can be better attenuated, since the reinforcing elements 25 increase the rigidity of the damping element 17 and thus pass the vibrations of the trim part 15 into deeper regions of the damping element 17, whereby an improved damping is made possible especially over a wide temperature range , Thereby, the dead time of the ultrasonic sensor 5a can be reduced, so that an improved operation of the ultrasonic sensor 5a over a wide temperature range is enabled.
- a device preferably has the arrangement 5.
- the device is formed, in particular, with the trim part 15 for the motor vehicle 1, the ultrasonic sensor 5 a being concealed on the trim part 15, so that the ultrasonic sensor 5 a transmits ultrasonic signals 8 through the trim part 15 and / or for receiving echo signals 9 the cowling 15 is disposed therethrough.
- Fig. 4 shows a schematic perspective view of an embodiment of the
- the reinforcing elements 25 are in the present
- the damping element 17 has fibers 27 as reinforcing elements 25.
- the damping element 17 may comprise glass fibers and / or ceramic fibers and / or basalt fibers and / or mineral fibers and / or stainless steel fibers and / or aluminum fibers and / or synthetic fibers as fibers 27 as reinforcing elements 25.
- the damping element 17 has, in particular, a cover layer 28 by means of which the damping element 17 can be protected, in particular, better from environmental influences.
- At least the shape of the reinforcing elements 25 and / or the position of the reinforcing elements 25 in the damping element 17 is adapted to a resonant frequency of the ultrasonic sensor 5a.
- FIG. 5 shows a temperature-damping diagram of an embodiment of the damping element 17.
- A is the temperature, in particular the Ambient temperature, given in ° C and the ordinate O indicates the damping in db.
- the line 29 shows in particular the attenuation curve of a
- the damping is dependent, in particular, on the reinforcing elements 25, so that it is also possible to record a continuous better damping of the damping element 17 with the reinforcing elements 25 than just one damping element without reinforcing elements 25 in a temperature range from -30 ° C. to + 90 ° C. is.
- Armairesetti 25 within a temperature range of -30 ° C to +90 ° C have at least an attenuation of -250 db.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Acoustics & Sound (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Transducers For Ultrasonic Waves (AREA)
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US16/763,765 US20210173062A1 (en) | 2017-11-22 | 2018-10-12 | Assembly for a motor vehicle with an ultrasonic sensor and with a damping element that comprises reinforcing elements and also a device |
| CN201880075835.XA CN111373279B (zh) | 2017-11-22 | 2018-10-12 | 具有超声波传感器并且具有包括加强元件的阻尼元件的用于机动车辆的组件以及设备 |
| JP2020528096A JP7170041B2 (ja) | 2017-11-22 | 2018-10-12 | 超音波センサと補強要素を備えた制振要素とを有する自動車両用のアセンブリ、および装置 |
| KR1020207014306A KR102361107B1 (ko) | 2017-11-22 | 2018-10-12 | 초음파 센서와, 보강 요소를 포함하는 댐핑 요소를 갖는 자동차용 조립체, 및 장치 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102017127587.8A DE102017127587A1 (de) | 2017-11-22 | 2017-11-22 | Anordnung für ein Kraftfahrzeug mit einem Ultraschallsensor und mit einem Dämpfungselement, welches Armierungselemente aufweist sowie Vorrichtung |
| DE102017127587.8 | 2017-11-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2019101434A1 true WO2019101434A1 (de) | 2019-05-31 |
Family
ID=63878669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2018/077927 Ceased WO2019101434A1 (de) | 2017-11-22 | 2018-10-12 | Anordnung für ein kraftfahrzeug mit einem ultraschallsensor und mit einem dämpfungselement, welches armierungselemente aufweist sowie vorrichtung |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20210173062A1 (de) |
| JP (1) | JP7170041B2 (de) |
| KR (1) | KR102361107B1 (de) |
| CN (1) | CN111373279B (de) |
| DE (1) | DE102017127587A1 (de) |
| WO (1) | WO2019101434A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102019123822A1 (de) | 2019-09-05 | 2021-03-11 | Valeo Schalter Und Sensoren Gmbh | Rechnerische Störschallkompensation für Ultraschallsensorsysteme |
| JP7730696B2 (ja) * | 2021-08-30 | 2025-08-28 | 本田技研工業株式会社 | 超音波センサの取付け構造 |
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| EP3012655A1 (de) * | 2014-10-21 | 2016-04-27 | Valeo Schalter und Sensoren GmbH | Ultraschallsensorvorrichtung für ein kraftfahrzeug, anordnung sowie kraftfahrzeug |
| US20170059697A1 (en) | 2015-08-31 | 2017-03-02 | Tesla Motors, Inc. | Hidden ultrasonic sensor assembly |
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| DE4120681A1 (de) * | 1990-08-04 | 1992-02-06 | Bosch Gmbh Robert | Ultraschallwandler |
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-
2017
- 2017-11-22 DE DE102017127587.8A patent/DE102017127587A1/de active Pending
-
2018
- 2018-10-12 US US16/763,765 patent/US20210173062A1/en not_active Abandoned
- 2018-10-12 WO PCT/EP2018/077927 patent/WO2019101434A1/de not_active Ceased
- 2018-10-12 CN CN201880075835.XA patent/CN111373279B/zh active Active
- 2018-10-12 JP JP2020528096A patent/JP7170041B2/ja active Active
- 2018-10-12 KR KR1020207014306A patent/KR102361107B1/ko active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013211619A1 (de) * | 2013-06-20 | 2014-12-24 | Robert Bosch Gmbh | Umfeldsensiereinrichtung mit Ultraschallwandler, und Kraftfahrzeug mit einer derartigen Umfeldsensiereinrichtung |
| DE102014111947A1 (de) * | 2014-08-21 | 2016-02-25 | Valeo Schalter Und Sensoren Gmbh | Verkleidungsvorrichtung für ein Kraftfahrzeug, Anordnung, Kraftfahrzeug sowie Herstellungsverfahren |
| EP3012655A1 (de) * | 2014-10-21 | 2016-04-27 | Valeo Schalter und Sensoren GmbH | Ultraschallsensorvorrichtung für ein kraftfahrzeug, anordnung sowie kraftfahrzeug |
| US20170059697A1 (en) | 2015-08-31 | 2017-03-02 | Tesla Motors, Inc. | Hidden ultrasonic sensor assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| JP7170041B2 (ja) | 2022-11-11 |
| CN111373279B (zh) | 2023-12-29 |
| CN111373279A (zh) | 2020-07-03 |
| US20210173062A1 (en) | 2021-06-10 |
| KR102361107B1 (ko) | 2022-02-14 |
| DE102017127587A1 (de) | 2019-05-23 |
| JP2021504691A (ja) | 2021-02-15 |
| KR20200075857A (ko) | 2020-06-26 |
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