DE102004018219A1 - Sensor unit for vehicle has structure-borne sensor to sense structure-borne noise encountered on windscreen and to convert it into electrical signals which are processed by computing and control unit - Google Patents
Sensor unit for vehicle has structure-borne sensor to sense structure-borne noise encountered on windscreen and to convert it into electrical signals which are processed by computing and control unit Download PDFInfo
- Publication number
- DE102004018219A1 DE102004018219A1 DE200410018219 DE102004018219A DE102004018219A1 DE 102004018219 A1 DE102004018219 A1 DE 102004018219A1 DE 200410018219 DE200410018219 DE 200410018219 DE 102004018219 A DE102004018219 A DE 102004018219A DE 102004018219 A1 DE102004018219 A1 DE 102004018219A1
- Authority
- DE
- Germany
- Prior art keywords
- sensor
- vehicle window
- vehicle
- control unit
- signals
- 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- Withdrawn
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/04—Wipers or the like, e.g. scrapers
- B60S1/06—Wipers or the like, e.g. scrapers characterised by the drive
- B60S1/08—Wipers or the like, e.g. scrapers characterised by the drive electrically driven
- B60S1/0818—Wipers or the like, e.g. scrapers characterised by the drive electrically driven including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like
- B60S1/0822—Wipers or the like, e.g. scrapers characterised by the drive electrically driven including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like characterized by the arrangement or type of detection means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/04—Wipers or the like, e.g. scrapers
- B60S1/06—Wipers or the like, e.g. scrapers characterised by the drive
- B60S1/08—Wipers or the like, e.g. scrapers characterised by the drive electrically driven
- B60S1/0818—Wipers or the like, e.g. scrapers characterised by the drive electrically driven including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like
- B60S1/0822—Wipers or the like, e.g. scrapers characterised by the drive electrically driven including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like characterized by the arrangement or type of detection means
- B60S1/0833—Optical rain sensor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/04—Wipers or the like, e.g. scrapers
- B60S1/06—Wipers or the like, e.g. scrapers characterised by the drive
- B60S1/08—Wipers or the like, e.g. scrapers characterised by the drive electrically driven
- B60S1/0818—Wipers or the like, e.g. scrapers characterised by the drive electrically driven including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like
- B60S1/0822—Wipers or the like, e.g. scrapers characterised by the drive electrically driven including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like characterized by the arrangement or type of detection means
- B60S1/0855—Ultrasonic rain sensor
Abstract
Description
Die Erfindung betrifft eine Sensoreinheit für ein Fahrzeug nach dem Oberbegriff des Patentanspruchs 1.The The invention relates to a sensor unit for a vehicle according to the preamble of claim 1
Solche Sensoreinheiten, die nachfolgend auch als Regensensoren bezeichnet werden, werden in Fahrzeugen zur Erkennung von auf einer Fahrzeugscheibe auftreffenden Wasser- und/oder Schmutzpartikeln benutzt. In Abhängigkeit von der Menge der erkannten Wasser- und/oder Schmutzpartikel wird ein Wischermotor angesteuert, so können beispielsweise die Geschwindigkeit des Scheibenwischermotors und/oder die Pausenzeiten in einem Interballbetrieb eingestellt werden. Herkömmliche Regensensoren für Kraftfahrzeuge erkennen in der Regel auf rein optischer Basis die Benetzung bzw. Verschmutzung der Fahrzeugscheibe. Typischerweise werden die Sensoreinheiten im oberen Bereich der Fahrzeugscheibe angebracht.Such Sensor units, also referred to below as rain sensors be used in vehicles for detecting on a vehicle window impinging water and / or dirt particles used. Dependent on of the amount of detected water and / or dirt particles is a wiper motor driven, so for example, the speed the windshield wiper motor and / or the pause times in an Interballbetrieb be set. conventional Rain sensors for Motor vehicles usually recognize on a purely optical basis the Wetting or soiling of the vehicle window. Typically the sensor units mounted in the upper region of the vehicle window.
In
der
In
der
Die Sensorflächen der eingesetzten Regensensoren sind verglichen zur Gesamtfläche der Fahrzeugscheibe klein, dadurch können Benetzungen und/oder Verschmutzungen außerhalb der Sensorfläche von solchen herkömmlichen Sensoreinheiten nicht erfasst werden. Insbesondere kann das Auftreffen von Benetzungen und Verschmutzungen im unteren und/oder seitlichen Bereich der Fahrzeugscheibe nicht detektiert werden, was zu einem Wischfehlverhalten führen kann.The sensor surfaces the rain sensors used are compared to the total area of the Vehicle window small, thereby can Wetting and / or contamination outside of the sensor surface of such conventional Sensor units are not detected. In particular, the impact can wetting and soiling in the lower and / or lateral Area of the vehicle window can not be detected, resulting in a Wipe malfunction lead can.
Aufgabe der Erfindung ist es, eine Sensoreinheit für ein Fahrzeug zur Verfügung zu stellen, mit der Benetzungen und/oder Verschmutzungen auf einer zugehörigen Fahrzeugscheibe detektiert werden können.task The invention is to provide a sensor unit for a vehicle with wetting and / or soiling on one side associated Vehicle window can be detected.
Die Erfindung löst diese Aufgabe durch Bereitstellung einer Sensoreinheit für ein Fahrzeug mit den Merkmalen des Patentanspruchs 1.The Invention solves this object by providing a sensor unit for a vehicle with the features of claim 1.
Vorteilhafte Ausführungsformen und Weiterbildungen der Erfindung sind in den abhängigen Ansprüchen angegeben.advantageous embodiments and further developments of the invention are specified in the dependent claims.
Erfindungsgemäß ist mindestens ein Körperschallsensor vorgesehen, der einen an der Fahrzeugscheibe auftretenden Körperschall erfasst und in elektrische Signale umwandelt, die von einer Auswerte- und Steuereinheit ausgewertet werden. Durch eine geeignete Signalaufbereitung kann das Auftreffen von großen und kleinen Wasser- und Schmutzpartikeln auf der gesamten Scheibenfläche detektiert werden. Insbesondere können partielle Benetzung und/oder Verschmutzungen im unteren und/oder seitlichen Scheibenbereich ebenfalls detektiert werden, die nicht auf einer vorgegebenen begrenzten Sensorfläche auftreffen und beispielsweise durch Spritzwasser von anderen Fahrzeugen hervorgerufen werden.According to the invention is at least a structure-borne sound sensor provided, the one occurring on the vehicle wind structure-borne sound recorded and converted into electrical signals which are transmitted by an and control unit are evaluated. By a suitable signal conditioning can be the impact of big and small particles of water and dirt are detected on the entire disk surface. In particular, you can partial wetting and / or contamination in the lower and / or lateral Disc area also be detected, not on one given limited sensor area impinge and for example by splashing water from other vehicles be caused.
In besonders vorteilhafter Ausgestaltung umfasst die Sensoreinheit zusätzlich mindestens einen optischen Sensor, der einen vorgegebenen Bereich der Fahrzeugscheibe detektiert. Durch die Kombination des mindestens einen körperakustischen und des mindestens einen optischen Sensors kann die Ansteuerung eines Wischsystems bzw. eines Wischermotors in vorteilhafter Weise dadurch optimiert werden, dass bei der Auswertung die Signale des Körperschallsensors mit den Signalen des optischen Sensors in Zusammenhang gebracht werden.In Particularly advantageous embodiment comprises the sensor unit additionally at least one optical sensor having a predetermined range of Vehicle window detected. By combining the at least a body acoustic and the at least one optical sensor, the drive a wiper system or a wiper motor in an advantageous manner be optimized by the fact that in the evaluation of the signals of the structure-borne sound sensor associated with the signals of the optical sensor become.
In weiterer Ausgestaltung umfasst die Sensoreinheit Mittel zur Signalaufbereitung, die mindestens eine Verstärkerschaltung und/oder mindestens eine Filterschaltung mit einer festen und/oder einstellbaren Filtercharakteristik umfassen.In In another embodiment, the sensor unit comprises means for signal conditioning, the at least one amplifier circuit and / or at least one filter circuit with a fixed and / or adjustable filter characteristic include.
Die mindestens eine Filterschaltung umfasst beispielsweise eine Hochpassfilterschaltung und/oder eine Tiefpassfilterschaltung und/oder eine Bandpassfilterschaltung, die jeweils ein entsprechend gefiltertes Signal zur Auswertung erzeugen. Durch die mindestens eine Filterschaltung können beispielsweise Frequenzanteile des Sensorsignals ermittelt werden, aus denen dann der Umfang der Benetzung und/oder der Verschmutzung der Fahrzeugscheibe ermittelt und eine passende Wischcharakteristik des Wischersystems bzw. des Wischermotors in Bezug auf Wischgeschwindigkeit und Wischfrequenz eingestellt werden kann.The at least one filter circuit comprises, for example, a high-pass filter circuit and / or a low-pass filter circuit and / or a band-pass filter circuit, each generating a correspondingly filtered signal for evaluation. By the at least one filter circuit can, for example, frequency components of the sensor signal are determined, from which then the extent of wetting and / or the contamination of the vehicle window is determined and a suitable wiping characteristic of the wiper system or the wiper motor adjusted in terms of wiping speed and wiping frequency can be.
In weiterer Ausgestaltung der Sensoreinheit ist zur Ansteuerung des Wischsystems eine Logikschaltung vorgesehen, welche die von dem optischen Sensor und dem Körperschallsensor erzeugten Signale zur Erkennung von Wasser- und/oder Schmutzpartikeln auf der Fahrzeugscheibe verknüpft und entsprechende Ansteuersignale für den Wischermotor erzeugt.In Another embodiment of the sensor unit is for controlling the Wischsystems a logic circuit provided which the of the optical sensor and the structure-borne sound sensor generated signals for the detection of water and / or dirt particles linked on the vehicle window and corresponding drive signals for generates the wiper motor.
Der Körperschallsensor und der optische Sensor sind beispielsweise in einer gemeinsamen Baueinheit integriert, die in einem oberen Bereich der Fahrzeugscheibe angeordnet ist.Of the Acoustic emission sensor and the optical sensor, for example, in a common unit integrated, which are arranged in an upper area of the vehicle window is.
Eine vorteilhafte Ausführungsform der Erfindung ist in den Zeichnungen dargestellt und wird nachfolgend beschrieben.A advantageous embodiment The invention is illustrated in the drawings and will become apparent below described.
Dabei zeigen:there demonstrate:
Wie
aus
Die
Auswerte- und Steuereinheit
Zur
Ansteuerung des Wischermotors
Wie
aus der
Durch die erfindungsgemäße Verwendung eines Körperschallsensors kann eine höhere Qualität der Detektierung als bei den herkömmlichen Sensorsystemen erreicht werden, insbesondere wenn der Körperschallsensor mit einem optischen Sensor kombiniert wird. So lassen sich durch den Körperschallsensor auch Benetzungen und Verschmutzungen im Randbereich der Fahrzeugscheibe detektieren und das Wischverhalten entsprechend einstellen. Dadurch wird eine höhere Kundenzufriedenheit erreicht und die Akzeptanz solcher Wischersysteme, die automatisch durch eine Sensoreinheit gesteuert werden, wird erhöht.By using a structure-borne sound sensor according to the invention, a higher quality of the detection than in the conventional sensor systems can be achieved, in particular if the structure-borne sound sensor is combined with an optical sensor. Thus, wetting and soiling in the edge region of the vehicle window can be detected by the structure-borne sound sensor and the wiping behavior adjusted accordingly. This achieves greater customer satisfaction and acceptance of such wiper systems, which are automatically controlled by a sensor unit will be raised.
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410018219 DE102004018219A1 (en) | 2004-04-15 | 2004-04-15 | Sensor unit for vehicle has structure-borne sensor to sense structure-borne noise encountered on windscreen and to convert it into electrical signals which are processed by computing and control unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410018219 DE102004018219A1 (en) | 2004-04-15 | 2004-04-15 | Sensor unit for vehicle has structure-borne sensor to sense structure-borne noise encountered on windscreen and to convert it into electrical signals which are processed by computing and control unit |
Publications (1)
Publication Number | Publication Date |
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DE102004018219A1 true DE102004018219A1 (en) | 2005-11-10 |
Family
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Family Applications (1)
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DE200410018219 Withdrawn DE102004018219A1 (en) | 2004-04-15 | 2004-04-15 | Sensor unit for vehicle has structure-borne sensor to sense structure-borne noise encountered on windscreen and to convert it into electrical signals which are processed by computing and control unit |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006055768A1 (en) * | 2006-11-25 | 2008-05-29 | Continental Teves Ag & Co. Ohg | Signal pre-processing unit for use in e.g. solid borne sound sensor, has frequency converter module including downward mixer and convolution unit, and coding module designed to perform signal/data compression and source coding |
DE102011120867A1 (en) * | 2011-12-12 | 2013-06-13 | Hella Kgaa Hueck & Co. | Method and device for rain detection on a windshield |
DE102015000207A1 (en) * | 2015-01-15 | 2016-07-21 | Hella Kgaa Hueck & Co. | Method and device for detecting a structure-borne sound signal, in particular for detecting a structure-borne noise signal triggered by a damage event on a component to be monitored |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
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DE3803138A1 (en) * | 1988-02-03 | 1989-08-17 | Hella Kg Hueck & Co | Device for controlling a window/headlamp wiper of vehicles, in particular motor vehicles |
DE3935807A1 (en) * | 1989-10-27 | 1991-05-02 | Swf Auto Electric Gmbh | Vehicular windscreen wiper with variable-gain rain detector - exploits excitation of vibrations of diaphragm by rain-drop impact with allowance for high-speed noise |
DE3910116C2 (en) * | 1989-03-29 | 1992-01-23 | Kabelwerke Reinshagen Gmbh, 5600 Wuppertal, De | |
DE29820546U1 (en) * | 1998-11-17 | 1999-02-04 | Brodmeier Frank | Precipitation sensor |
DE19827044C1 (en) * | 1998-06-18 | 1999-10-21 | Daimler Chrysler Ag | Light and/or rain sensor device for motor vehicle |
DE69607226T2 (en) * | 1995-01-26 | 2000-10-26 | Saint Gobain Vitrage | Laminated glass pane with detector |
-
2004
- 2004-04-15 DE DE200410018219 patent/DE102004018219A1/en not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3803138A1 (en) * | 1988-02-03 | 1989-08-17 | Hella Kg Hueck & Co | Device for controlling a window/headlamp wiper of vehicles, in particular motor vehicles |
DE3910116C2 (en) * | 1989-03-29 | 1992-01-23 | Kabelwerke Reinshagen Gmbh, 5600 Wuppertal, De | |
DE3935807A1 (en) * | 1989-10-27 | 1991-05-02 | Swf Auto Electric Gmbh | Vehicular windscreen wiper with variable-gain rain detector - exploits excitation of vibrations of diaphragm by rain-drop impact with allowance for high-speed noise |
DE69607226T2 (en) * | 1995-01-26 | 2000-10-26 | Saint Gobain Vitrage | Laminated glass pane with detector |
DE19827044C1 (en) * | 1998-06-18 | 1999-10-21 | Daimler Chrysler Ag | Light and/or rain sensor device for motor vehicle |
DE29820546U1 (en) * | 1998-11-17 | 1999-02-04 | Brodmeier Frank | Precipitation sensor |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006055768A1 (en) * | 2006-11-25 | 2008-05-29 | Continental Teves Ag & Co. Ohg | Signal pre-processing unit for use in e.g. solid borne sound sensor, has frequency converter module including downward mixer and convolution unit, and coding module designed to perform signal/data compression and source coding |
DE102011120867A1 (en) * | 2011-12-12 | 2013-06-13 | Hella Kgaa Hueck & Co. | Method and device for rain detection on a windshield |
US20130145839A1 (en) * | 2011-12-12 | 2013-06-13 | Hella Kgaa Hueck & Co. | Method and device for detecting rain on a windshield |
US9322952B2 (en) * | 2011-12-12 | 2016-04-26 | Hella Kgaa Hueck & Co. | Method and device for detecting rain on a windshield |
DE102015000207A1 (en) * | 2015-01-15 | 2016-07-21 | Hella Kgaa Hueck & Co. | Method and device for detecting a structure-borne sound signal, in particular for detecting a structure-borne noise signal triggered by a damage event on a component to be monitored |
US10067095B2 (en) | 2015-01-15 | 2018-09-04 | Hella Kgaa Hueck & Co. | Method and device for detecting a structure-borne sound signal, in particular for detecting a structure-borne sound signal triggered by an occurrence of damage on a component to be monitored |
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OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8127 | New person/name/address of the applicant |
Owner name: DAIMLERCHRYSLER AG, 70327 STUTTGART, DE |
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8127 | New person/name/address of the applicant |
Owner name: DAIMLER AG, 70327 STUTTGART, DE |
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8139 | Disposal/non-payment of the annual fee |