EP3146359A1 - Ultraschallsensor mit speichereinrichtung für ein kraftfahrzeug, sensoranordnung, kraftfahrzeug sowie herstellungsverfahren - Google Patents
Ultraschallsensor mit speichereinrichtung für ein kraftfahrzeug, sensoranordnung, kraftfahrzeug sowie herstellungsverfahrenInfo
- Publication number
- EP3146359A1 EP3146359A1 EP15716813.9A EP15716813A EP3146359A1 EP 3146359 A1 EP3146359 A1 EP 3146359A1 EP 15716813 A EP15716813 A EP 15716813A EP 3146359 A1 EP3146359 A1 EP 3146359A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ultrasonic sensor
- transmitting device
- sensor
- motor vehicle
- ultrasonic
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 10
- 238000011156 evaluation Methods 0.000 claims description 48
- 238000001514 detection method Methods 0.000 claims description 14
- 230000006870 function Effects 0.000 claims description 6
- 238000002604 ultrasonography Methods 0.000 claims description 3
- 230000003213 activating effect Effects 0.000 claims description 2
- 239000012528 membrane Substances 0.000 abstract description 17
- 238000000034 method Methods 0.000 description 8
- 230000008859 change Effects 0.000 description 6
- 230000005284 excitation Effects 0.000 description 3
- 238000011109 contamination Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000003534 oscillatory effect Effects 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000002592 echocardiography Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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
- 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
- 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
- G01S7/52004—Means for monitoring or calibrating
- G01S7/52006—Means for monitoring or calibrating with provision for compensating the effects of temperature
-
- 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
- G01S7/523—Details of pulse systems
- G01S7/524—Transmitters
-
- 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
- G01S15/87—Combinations of sonar systems
- G01S15/876—Combination of several spaced transmitters or receivers of known location for determining the position of a transponder or a reflector
-
- 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
- G01S7/52004—Means for monitoring or calibrating
- G01S2007/52009—Means for monitoring or calibrating of sensor obstruction, e.g. dirt- or ice-coating
-
- 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
- G01S2015/932—Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles for parking operations
Definitions
- Ultrasonic sensor with memory device for a motor vehicle, sensor arrangement, motor vehicle and manufacturing method
- the present invention relates to an ultrasonic sensor for a motor vehicle, having a transmitting device for emitting ultrasonic waves, wherein the transmitting device has a diaphragm and an adjusting device, with which the membrane for emitting the ultrasonic waves is movable, and having a memory device, on which at least one operating parameter of the ultrasonic sensor is stored.
- the present invention relates to a sensor arrangement with an ultrasonic sensor and an evaluation device.
- the present invention relates to a motor vehicle with such a sensor arrangement.
- the present invention relates to a
- Ultrasonic sensors safely detect the obstacles located in the vicinity of the motor vehicle or the distances reliably up to a
- the ultrasonic sensors can detect predetermined range. If the ultrasonic sensors are blocked, that is covered by an additional mass, such as dirt, snow and / or ice, this functionality can no longer be guaranteed.
- DE 10 2009 040 992 A1 proposes to detect the settling time of the ultrasonic sensor following excitation of the membrane and to compare it with the excitation frequency. Depending on the result of this comparison, it is determined whether the ultrasonic sensor is blocked or not.
- DE 10 2010 021 960 A1 describes a method in which the decay time of the membrane over several measuring cycles of the ultrasonic sensor is evaluated for the detection of the blocked state of an ultrasonic sensor.
- the measurement of the change in the resonant frequency of the ultrasonic sensor and a deviation determined therefrom to a fundamental resonance frequency without contamination are dependent on different factors. For example, the temperature and an associated change in the mechanical properties of the ultrasonic sensor or the membrane play a role. Such a change of
- Temperature information that are stored, for example, in an evaluation, are corrected.
- a very large influencing factor which can not yet be corrected are the component tolerances of the ultrasonic sensor itself.
- the membranes of the ultrasonic sensor itself.
- Total tolerance for the resonant frequency may be, for example, in the range of several 100 Hz or even in the range of a few kHz. It should be noted that the ultrasonic sensor has a bandwidth in the range of +/- 2 KHz.
- Frequency shifts that can occur due to the contamination or blocking of the membrane can be within these tolerances.
- the natural frequency or resonance frequency of the ultrasonic sensor is measured and compared with stored reference values.
- the sensor is excited and measured the Ausschwingfrequenz.
- This Ausschwingfrequenz or the resonance frequency of the ultrasonic sensor are stored in a memory device, such as an EEPROM memory, a control device of the motor vehicle. It is an object of the invention to provide a solution as an ultrasonic sensor of the type mentioned can be operated reliably and in particular as a blocked state of the ultrasonic sensor can be determined more precisely.
- An inventive ultrasonic sensor for a motor vehicle comprises a
- Transmitting device for emitting ultrasonic waves wherein the transmitting device comprises a diaphragm and an adjusting device, with which the membrane for emitting the ultrasonic waves is movable, and a memory device, on which at least one operating parameter of the ultrasonic sensor is stored, wherein as the at least one operating parameter of the ultrasonic sensor at least one resonance value is stored on the memory device, which has a resonance frequency of
- the invention is based on the finding that ultrasonic sensors usually have a memory device. On this storage device can
- Operating parameters of the ultrasonic sensor may be stored. For example, manufacturer-related data such as the country, the line and / or the factory in which the ultrasonic sensor has been manufactured may be stored.
- at least one resonance value is additionally stored in the memory device. This at least one
- Resonance value describes a resonance frequency or a natural frequency of the transmitting device of the ultrasonic sensor.
- the transmitting device comprises the
- a first resonance value which describes a first resonance frequency of the transmitting device at a first temperature
- at least one second resonance value which describes a second resonant frequency of the transmitting device at a different second temperature from the first, are preferably stored in the memory device.
- a plurality of resonance values can be stored in the memory device, which were respectively determined at different temperatures.
- the resonance frequency of the ultrasonic sensor or of the transmitting device may change due to a change in the temperature. This can be due to the temperature dependence of the material stiffness (modulus of elasticity) of the transmitting device itself and / or the adjacent components. In this way, the temperature influence on the resonance frequency of the transmitting device can be reliably taken into account.
- the memory device is preferably designed as a non-volatile memory.
- a non-volatile memory which may also be referred to as a non-volatile memory
- the stored information can also be retained when the
- the memory device may be formed as an EPROM memory, as a flash memory, as a ROM memory or OTP or the like.
- EPROM memory as a flash memory
- OTP as a ROM memory
- Memory device of the ultrasonic sensor is stored.
- the transmitting device and the memory device are arranged on a common carrier element and / or arranged in a common housing.
- the transmitting device and the memory device of the ultrasonic sensor can be arranged, for example, on a common board. Alternatively or additionally, the transmitting device and the memory device in a
- a space-saving ultrasonic sensor which additionally comprises a memory device in which the resonance frequency of the transmitting device of the ultrasonic sensor is stored.
- the ultrasonic sensor has a
- Temperature detecting means for detecting the temperature of the ultrasonic sensor can also be in the support element of Ultrasonic sensor may be arranged or arranged in the housing of the ultrasonic sensor.
- the temperature detection device is designed to determine a temperature of the transmitting device of the ultrasonic sensor. In this way, the current temperature of the transmitting device can be reliably determined. This information can be taken into account, for example, in addition to the at least one resonance value which describes the resonant frequency of the transmitting device at the current detected temperature or in a region of the detected current temperature.
- the ultrasonic sensor preferably has an interface for outputting the at least one resonance value stored on the memory device.
- a communication interface is provided by means of which the at least one resonance value can be transmitted to an evaluation device of the motor vehicle.
- This interface can be connected, for example, to the CAN bus of the motor vehicle. In this way, the stored in the memory device resonance value can be easily provided.
- a sensor arrangement according to the invention comprises at least one ultrasonic sensor according to the invention and an evaluation device.
- the evaluation device is designed to store the at least one stored on the memory device
- the evaluation device may in particular be a central control device of the motor vehicle, which is also referred to as an electronic control unit (ECU).
- ECU electronice control unit
- Sensor arrangement may also comprise several of the ultrasonic sensors according to the invention.
- each of the ultrasonic sensors transmit its resonance value to the evaluation device.
- the evaluation device can reliably control the individual ultrasonic sensors as a function of their resonance frequency.
- At least one desired value for the evaluation device at least one desired value for the
- Resonant frequency of the transmitting device of the ultrasonic sensor stored and the evaluation device is adapted to replace the at least one desired value by the at least one received resonance value.
- a desired value for the resonant frequency of the ultrasonic sensor be deposited, for the control and / or evaluation of the Sensor signals of the ultrasonic sensor is used. This value can now be replaced by the at least one resonance value, which is transmitted from the ultrasonic sensor to the evaluation device. In this way, the ultrasonic sensor can be operated more reliably.
- the evaluation device is designed to handle the
- the setting unit of the transmitting device can be controlled by means of the evaluation device so that it is operated with its determined resonance frequency. In this way, the
- Transmitter can be operated energy-efficient.
- the evaluation device is designed to, the
- Resonant frequency of the transmitting device a decay frequency of the transmitting device can be determined. Based on this, the current resonance frequency of the
- Transmitter be determined.
- the evaluation device is designed to determine a blocked state of the ultrasonic sensor based on a comparison of the current specific resonance frequency and the at least one received resonance value.
- the transmitting device of the ultrasonic sensor can be covered by an additional mass, such as dirt, snow and / or ice. In this way, the current resonance frequency of the ultrasonic sensor is changed. Look at one
- the motor vehicle according to the invention comprises the sensor arrangement according to the invention.
- the evaluation device of the sensor arrangement is adapted to a blocked state of the ultrasonic sensor when activating an ignition of the
- Motor vehicle comprises providing a transmitting device of the ultrasonic sensor, providing a storage device of the ultrasonic sensor, arranging the transmitting device and the memory device on a common carrier element, determining at least one resonant frequency of the transmitting device, determining at least one resonance value based on the at least one determined
- the resonance frequency of the transmitting device is determined and stored in the memory device.
- further operating parameters such as, for example, the transmission sound intensity and the reception sensitivity can also be stored in the memory device.
- the tolerance value in the resonance value is determined and stored in the memory device.
- Figure 1 is a schematic representation of a motor vehicle with a sensor arrangement according to an embodiment of the invention.
- Fig. 2 shows a schematic representation of an ultrasonic sensor of
- Sensor arrangement comprising a memory device, a
- 3 is a graph showing an adaptation of a in an evaluation of the
- An illustrated in Fig. 1 motor vehicle 1 is for example a passenger car.
- the motor vehicle 1 comprises a sensor arrangement 2, which has a plurality of
- Ultrasonic sensors 3 and an electronic evaluation device 4, which may be formed, for example, as a control unit comprises.
- the number and arrangement of the ultrasonic sensors 3 are shown in FIG. 1 by way of example only and may vary depending on the embodiment. In this embodiment, a plurality of
- Ultrasonic sensors 3 arranged on a front bumper 5 of the motor vehicle 1; a plurality of ultrasonic sensors 3 is also arranged on a rear bumper 6 of the motor vehicle 1.
- the ultrasonic sensors 3 can each be arranged in a recess of the respective bumper 5, 6, so that the transmitting device of the respective ultrasonic sensors 3 are arranged within the respective continuous recess of the bumpers 5, 6.
- a concealed installation of the ultrasonic sensors 3 behind the respective bumpers 5, 6 may be provided, so that the transmitting device of the ultrasonic sensors 3 abut against the back of the respective bumper 5, 6 and the ultrasonic signals through the material of the bumper 5, 6 transmitted through and to be received.
- the ultrasonic sensors 3 are each for detecting distances to in one
- Evaluation device 4 is transmitted, which processes the measured values of the ultrasonic sensors 3.
- driver assistance systems 7a to 7x be provided, which are designed to provide different functionalities in the motor vehicle 1, namely on the basis of the measured distances of the ultrasonic sensors 3.
- the different driver assistance systems 7a to 7x are shown as separate components; However, several functionalities can also be provided by a common control unit, which then assumes the function of several driver assistance systems.
- driver assistance systems 7a to 7x for example, the following systems can be provided: A parking assistance system in which the measured distances are emitted acoustically and / or optically
- an automatic brake assist system which for automatic braking of the motor vehicle 1 on the basis of the measured values of the ultrasonic sensors 3 detected
- Risk of collision a system for blind spot monitoring, a system for
- Fig. 2 is a greatly simplified representation of an ultrasonic sensor 3 is shown in a plan view.
- the ultrasonic sensor 3 comprises a transmitting device 8, which serves for emitting an ultrasonic signal.
- the transmitting device 8 serves for emitting an ultrasonic signal.
- Transmitting device 8 a membrane, not shown here, which moves with an adjusting unit or can be set in mechanical vibrations.
- the diaphragm may be made of aluminum, for example, and the actuator may include a corresponding actuator, such as a piezoelectric actuator.
- the membrane and the actuator thus form an oscillatory system, the one
- This resonant frequency may for example be between 40 KHz and 60 KHz.
- the ultrasound sensor 3 additionally comprises a memory device 9.
- the memory device 9 can in particular be designed as a nonvolatile memory.
- Storage device 9 are arranged together in a housing of the ultrasonic sensor 3.
- Transmitter 8 measured.
- the membrane can be excited with the adjusting unit and a decay frequency of the transmitting device 8 can be determined.
- a resonance value fR is determined and stored on the memory device 9 of the ultrasonic sensor 3 deposited.
- the resonance value fR describes the determined or measured
- the resonance frequency of the transmitting device 8 is measured at different temperatures T and for predetermined temperatures in each case a resonance value f R is determined, which is stored on the memory device 9.
- the ultrasonic sensor 3 comprises a temperature detection device 10.
- the temperature detection device 10 is designed to detect the current temperature T of the ultrasonic sensor 3. In other words, that captures
- Temperature detection device 10 the respective sensor temperature.
- the temperature detection device 10 comprises a temperature sensor, which in and / or on the housing 1 1 of the ultrasonic sensor 3 or in the immediate vicinity of
- Ultrasonic sensor 3 is arranged.
- Temperature detection device 10 are connected to an interface 12 of the
- Temperature detection device 10 currently detected temperature T to the
- Evaluation device 4 is usually at least one desired value f so n for the
- This nominal value f so n for the resonance frequency may correspond to a standard value for the resonant frequency of the transmitting device of the ultrasonic sensor 3. This component tolerances due to the production are not taken into account.
- various desired frequencies f so n for the resonant frequency as a function of the temperature T are deposited. This is illustrated in the graph of FIG. 3.
- the temperature T of the transmitting device 8 is plotted on the abscissa. On the ordinate the frequency f is plotted.
- the dashed line 13 describes the course of the desired value f so n of the resonant frequency as a function of the temperature T.
- the solid line describes the course of the measured resonance frequency
- the measured resonance frequency is stored in the form of a plurality of resonance values f R, which were determined for different temperatures T, in the memory device 9 of the ultrasonic sensor 3.
- the resonance values f R are transmitted from the memory device 9 of the ultrasonic sensor 3 to the evaluation device 4.
- the stored there desired values f are as for the n
- Evaluation device 4 a blocked state of the respective ultrasonic sensors 3 can be determined.
- the evaluation device 4 is also designed to the
- Excitation signal activated. Subsequently, the mechanical vibration of the actuator 9 is detected. In this way, the current resonance frequency or natural frequency of the transmitting device 8 can be determined.
- the frequency, which occurs when the transmitter 9 swings out, corresponds to the current resonant frequency of the transmitter 8.
- the evaluation device 4 first detects the current resonance frequency of the respective ultrasonic sensors 3.
- the current temperature T which was determined by the temperature detection device 10
- the current temperature T can also be transmitted from the respective ultrasonic sensor 3 to the evaluation device 4.
- the currently detected resonance frequency of the transmitting device 8 of the ultrasonic sensor 3 can be assigned to the reference value fR stored in the evaluation device 4 for this temperature T. Based on a comparison between the currently measured resonance frequency and the resonance value fR, which is determined by means of the
- Evaluation device 4 is performed, it can be determined whether an additional mass is on the ultrasonic sensor 3. This comparison can be for any of the
- Ultrasonic sensors 3 which is installed on the motor vehicle 1, are performed. Due to the fact that the at least one resonance value fR is deposited on the storage device 9 of the ultrasonic sensor 3, component tolerances can be calculated out as influencing factor. In this way, a blocked state or the ice and dirt detection can be set very selectively. In addition, a quick query of the (fundamental) resonance frequency of the respective transmitting device 8 by means of the evaluation device 4, for example, during an initialization of the
- Evaluation device 4 be enabled. Thus, for example, no averaging of all ultrasonic sensors 3 of the motor vehicle 1 longer required.
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)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014107304.5A DE102014107304A1 (de) | 2014-05-23 | 2014-05-23 | Ultraschallsensor mit Speichereinrichtung für ein Kraftfahrzeug, Sensoranordnung, Kraftfahrzeug sowie Herstellungsverfahren |
PCT/EP2015/058376 WO2015176883A1 (de) | 2014-05-23 | 2015-04-17 | Ultraschallsensor mit speichereinrichtung für ein kraftfahrzeug, sensoranordnung, kraftfahrzeug sowie herstellungsverfahren |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3146359A1 true EP3146359A1 (de) | 2017-03-29 |
Family
ID=52875706
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15716813.9A Ceased EP3146359A1 (de) | 2014-05-23 | 2015-04-17 | Ultraschallsensor mit speichereinrichtung für ein kraftfahrzeug, sensoranordnung, kraftfahrzeug sowie herstellungsverfahren |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3146359A1 (de) |
DE (1) | DE102014107304A1 (de) |
WO (1) | WO2015176883A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015224733B3 (de) * | 2015-12-09 | 2016-10-20 | Robert Bosch Gmbh | Verfahren und Vorrichtung zum Erkennen eines eisbelegten elektroakustischen Sensors |
DE102016101007B4 (de) * | 2016-01-21 | 2022-12-01 | Valeo Schalter Und Sensoren Gmbh | Ultraschallsensor für ein Kraftfahrzeug mit wasserundurchlässiger Abdeckeinrichtung, Fahrerassistenzsystem sowie Kraftfahrzeug |
DE102017122383B4 (de) | 2017-09-27 | 2023-10-12 | Valeo Schalter Und Sensoren Gmbh | Verfahren zum Betreiben einer Ultraschallsensorvorrichtung für ein Kraftfahrzeug mit Bestimmung eines Zustands eines Schallwandlerelements, Ultraschallsensorvorrichtung, Fahrerassistenzsystem sowie Kraftfahrzeug |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012220311A1 (de) * | 2012-11-08 | 2014-05-08 | Robert Bosch Gmbh | Verfahren zur Detektion der Sensordegradation bei Abstandssensoren |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002131428A (ja) * | 2000-10-25 | 2002-05-09 | Mitsubishi Electric Corp | 超音波障害物検出装置 |
DE10236879B4 (de) * | 2001-08-14 | 2013-10-24 | Denso Corporation | Hindernis-Detektionsgerät und damit in Beziehung stehendes Kommunikationsgerät |
DE10247971A1 (de) | 2002-10-15 | 2004-05-06 | Valeo Schalter Und Sensoren Gmbh | System zur Überwachung des Nahbereichs eines Kraftfahrzeuges mit Störungserkennung und Verfahren zur Ermittlung der Störungsfreiheit eines derartigen Systems |
JP4036225B2 (ja) * | 2004-07-20 | 2008-01-23 | 株式会社デンソー | 障害物検知装置 |
JP2007183185A (ja) * | 2006-01-06 | 2007-07-19 | Denso Corp | 超音波センサ |
JP2010014497A (ja) * | 2008-07-02 | 2010-01-21 | Nippon Soken Inc | 障害物検知装置 |
DE102009040992B4 (de) | 2009-09-10 | 2015-11-26 | Valeo Schalter Und Sensoren Gmbh | Verfahren zur Vereisungs- und Verschmutzungserkennung von Ultraschallsensoren |
DE102010021960B4 (de) | 2010-05-28 | 2021-05-06 | Valeo Schalter Und Sensoren Gmbh | Verrfahren zum Erkennen eines blockierten Zustands eines Ultraschallsensors eines Kraftfahrzeugs, Fahrerassistenzeinrichtung und Kraftfahrzeug |
DE102011016946A1 (de) * | 2011-04-13 | 2012-10-18 | Volkswagen Ag | Verfahren zum Festlegen einer Frequenz für ein Anregungssignal eines Ultraschallsensors, Fahrerassistenzeinrichtung und Kraftfahrzeug |
DE102012215493B4 (de) * | 2012-08-31 | 2023-10-26 | Robert Bosch Gmbh | Robustheitserhöhung von Ultraschallsystemen |
-
2014
- 2014-05-23 DE DE102014107304.5A patent/DE102014107304A1/de active Pending
-
2015
- 2015-04-17 EP EP15716813.9A patent/EP3146359A1/de not_active Ceased
- 2015-04-17 WO PCT/EP2015/058376 patent/WO2015176883A1/de active Application Filing
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012220311A1 (de) * | 2012-11-08 | 2014-05-08 | Robert Bosch Gmbh | Verfahren zur Detektion der Sensordegradation bei Abstandssensoren |
Non-Patent Citations (1)
Title |
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See also references of WO2015176883A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2015176883A1 (de) | 2015-11-26 |
DE102014107304A1 (de) | 2015-11-26 |
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