DE4123641A1 - Vehicle windscreen wiper motor speed controller depending on rain intensity - detects modulation of infrared light reflected from screen by rain drops via optical sensor coupled to motor controller - Google Patents

Vehicle windscreen wiper motor speed controller depending on rain intensity - detects modulation of infrared light reflected from screen by rain drops via optical sensor coupled to motor controller

Info

Publication number
DE4123641A1
DE4123641A1 DE19914123641 DE4123641A DE4123641A1 DE 4123641 A1 DE4123641 A1 DE 4123641A1 DE 19914123641 DE19914123641 DE 19914123641 DE 4123641 A DE4123641 A DE 4123641A DE 4123641 A1 DE4123641 A1 DE 4123641A1
Authority
DE
Germany
Prior art keywords
rain
light beam
raindrops
infrared light
sensor
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Withdrawn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
DE19914123641
Other languages
German (de)
Inventor
Joannis Troussas
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.)
TREBE ELEKTRONIK INH JOANNIS T
Original Assignee
TREBE ELEKTRONIK INH JOANNIS T
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 TREBE ELEKTRONIK INH JOANNIS T filed Critical TREBE ELEKTRONIK INH JOANNIS T
Priority to DE19914123641 priority Critical patent/DE4123641A1/en
Priority to JP4190636A priority patent/JPH05193451A/en
Publication of DE4123641A1 publication Critical patent/DE4123641A1/en
Withdrawn legal-status Critical Current

Links

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
    • 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

Abstract

The controller automatically switches on and continuouslly controls the motor, depending on the number and thickness of the drops falling on the windscreen. An infrared light source housed (9) in the vehicle roof (8) directs a beam at part (12) of the windscreen. The beam is modulated in frequency and amplitude according to the number and thickness of the rain sensor (2), also housed (9) in the roof. An electrical signal (UH) derived with amplitude determined by the rain density is used by a control circuit to vary the wiper motor speed. ADVANTAGE - Does not require windscreen to be modified, more reliable.

Description

Die Erfindung betrifft ein Verfahren zur Einschaltung und stufenlosen Regelung eines Scheibenwischermotors an Automo­ bilen und ähnlichen Fahrzeugen in Abhängigkeit von der Stärke des auffallenden Regens, sowie eine Vorrichtung zur Durchführung des Verfahrens.The invention relates to a method for switching on and stepless control of a wiper motor on Automo cheap and similar vehicles depending on the Strength of the striking rain, as well as a device for Execution of the procedure.

Es sind bereits mehrere Vorschläge bekannt geworden, deren Ziel es ist, den Motor eines Scheibenwischers von Automobilen bei Regenbeginn automatisch einzuschalten und die Drehge­ schwindigkeit des Motors automatisch in Abhängigkeit von der Stärke des fallenden Regens zu steuern. Insbesondere wurde im Patent .. (Anm.: P 41 17 945.5) vorgeschlagen, zwei elektrische Leiter an der Windschutzscheibe zu befestigen, die als Kondensator wirken, dessen Kapazität in Abhängigkeit von den auf die Scheibe fallenden Regentropfen veränderlich ist, wobei das ΔC benutzt wird, die Drehgeschwindigkeit des Motors zu regeln.Several proposals have already been published, their The goal is to motor an automobile wiper automatically switch on when the rain starts and the rotation speed of the motor automatically depending on the Control the strength of the falling rain. In particular, was in the patent .. (Note: P 41 17 945.5) proposed two to attach electrical conductors to the windshield, which act as a capacitor, its capacitance depending changeable by the raindrops falling on the window is, using the ΔC, the rotational speed to regulate the engine.

Diese Vorrichtung hat jedoch den Nachteil, daß auf der Scheibe ein Fremdkörper, nämlich die aufgeklebten elektrischen Leiter, vorhanden ist, der auf der Scheibe eine Erhöhung bildet, die beim Putzen der Scheibe von innen oder außen beschädigt werden kann.However, this device has the disadvantage that on the disc a foreign body, namely the glued electrical Head, there is an increase on the disc forms when cleaning the pane from the inside or outside can be damaged.

Der Erfindung liegt die Aufgabe zugrunde, diesen Nachteil zu vermeiden und ein Verfahren und eine Vorrichtung zur Durch­ führung des Verfahrens anzugeben, welches die Scheibe unver­ ändert läßt, so daß die glatte Scheibenfläche erhalten bleibt und demzufolge keine mechanischen Beschädigungen auftreten können.The object of the invention is to overcome this disadvantage avoid and a method and apparatus for through management of the procedure to specify which the disc is not changes, so that the smooth disc surface is preserved and consequently no mechanical damage can occur.

Diese Aufgabe ist durch ein Verfahren gelöst, das die im Anspruch 1 angegebenen Verfahrensschritte umfaßt.This problem is solved by a method that the in Claim 1 includes process steps.

Im wesentlichen besteht das Verfahren darin, die Scheibe mit einem Lichtstrahl anzustrahlen, der zunächst ein Gleichlicht­ strahl ist. Trifft dieser Gleichlichtstrahl auf der Scheibe auf die Wassertropfen, so wird er in unregelmäßiger Weise moduliert, weil die Tropfen durch den auftreffenden Fahrtwind und die gegenwirkende Oberflächenspannung des Wassers ständig in unkontrollierter Weise ihre Form ändern.Essentially, the process consists of using the washer  to emit a beam of light that is initially a constant light beam is. Hits this constant light beam on the disc on the water droplets, so it becomes irregular modulated because the drops are impacted by the headwind and the counteracting surface tension of the water constantly change their shape in an uncontrolled manner.

Dieses modulierte Licht wird von den Wassertropfen diffus reflektiert, wobei die Frequenz und die Amplitude der Modu­ lation ein Maß für die Anzahl der auf der Scheibe sitzenden Regentropfen sind, d. h. also für die Stärke des fallenden Regens.This modulated light is diffused by the water drops reflected, the frequency and amplitude of the mod a measure of the number of people sitting on the disc Raindrops are d. H. so for the strength of the falling Rain.

Ein Teil der reflektierten Lichtstrahlen wird von einem Sensor aufgefangen, dem eine Auswerteschaltung nachgeordnet ist, in der zunächst das auf den Gleichlichtanteil zurückgehende Signal ausgefiltert wird und das verbleibende Signal nach Frequenz und Amplitude derart ausgewertet wird, daß ein der Stärke des fallenden Regens proportionales Signal zur Verfügung steht, das nach Verstärkung zur Steuerung der Drehgeschwindigkeit des Scheibenwischermotors verwendet wird.Part of the reflected light rays is from a sensor caught, which is followed by an evaluation circuit, in which the first is due to the proportion of constant light Signal is filtered out and the remaining signal after Frequency and amplitude is evaluated such that a signal proportional to the strength of the falling rain Is available that after amplification to control the Rotation speed of the wiper motor is used.

Obwohl grundsätzlich alle Arten von elektromagnetischen Wellen zur Bestrahlung der Regentropfen auf der Scheibe verwendbar sind, also auch sichtbares Licht, wird jedoch insbesondere vorgeschlagen, für diese Bestrahlung Infrarot-Licht zu ver­ wenden. Dieses Infrarotlicht wird vorzugsweise ein Gleich­ licht sein, es kann aber auch ein Wechsellicht sein, dessen Wellen durch die Regentropfen eine Modulation aufgeprägt wird.Although basically all types of electromagnetic waves can be used to irradiate the raindrops on the window are visible light, but will be particularly proposed to use infrared light for this irradiation turn. This infrared light is preferably an equal be light, but it can also be an alternating light whose Waves through which raindrops are applied a modulation.

Eine Vorrichtung zur Durchführung des Verfahrens besteht gemäß der Erfindung aus einem IR-Sender und einem IR-Sensor, die gemeinsam nebeneinander in einem Gehäuse untergebracht sind. Dieses Gehäuse ist im Fahrzeuginneren montiert mit Sende- und Empfangsrichtung zur Windschutzscheibe. Vorzugsweise kann die Montagestelle am Fahrzeugdach sein, so daß zwischen den vorderen Plätzen die Blickrichtung zur Scheibe frei ist. Es kann aber für die Montage auch jeder andere geeignete Platz gewählt werden. Dabei verlaufen dann sowohl der Beleuchtungsstrahl als auch der Reflexionsstrahl durch das Glas der Scheibe, was die Wirksamkeit der Erfindung in KeinerWeise beeinträchtigt.A device for performing the method exists according to the invention of an IR transmitter and an IR sensor, which are housed together in a housing are. This housing is mounted inside the vehicle  Sending and receiving direction to the windshield. The assembly point on the vehicle roof can preferably be so that between the front seats the line of sight to Disk is free. But everyone can do it for assembly other suitable place can be chosen. Then run both the illuminating beam and the reflecting beam through the glass of the pane, showing the effectiveness of the invention not affected in any way.

In der Zeichnung ist die Erfindung in einem Ausführungsbei­ spiel dargestellt. Es zeigtIn the drawing, the invention is in one embodiment game shown. It shows

Fig. 1 schematisch das Prizip des erfundenen Verfahrens, Fig. 1 shows schematically the Prizip of the invented method,

Fig. 2 schematisch die räumliche Anordnung des Sender- und Sensor-Teiles im Fahrzeug, Fig. 2 schematically shows the spatial arrangement of the transmitter and sensor part in the vehicle,

Fig. 3 eine Diagramm-Darstellung der Frequenz des Be­ leuchtungsstrahles und des Reflexionsstrahles, Fig. 3 is a diagram representation of the frequency of the Be leuchtungsstrahles and the reflection beam,

Fig. 4 das Blockschaltbild einer dem IR-Sensor nachge­ ordneten Auswerteschaltung. Fig. 4 shows the block diagram of an evaluation circuit arranged after the IR sensor.

In Fig. 1 sind mit 1 der IR-Sender und mit 2 der IR-Sensor bezeichnet. 3 ist die Frontscheibe, auf der die Wassertropfen 4 sitzen. Der Sender 1 sendet Gleichlichtstrahlen in Pfeil­ richtung A. Von den Wassertropfen 4 wird das Licht in Pfeil­ richtung B reflektiert, aber nicht mehr als Gleichlicht, sondern als moduliertes Wechsellicht. Diese Modulation geschieht an den Wassertropfen 4, und zwar dadurch, daß die Tropfen ständig ihre Form ändern. Auf sie trifft der Fahrt­ wind mit der Tendenz, sie platt zu drücken. Dem weichen die Tropfen vermöge ihrer Oberflächenspannung seitlich aus.In Fig. 1, 1 denotes the IR transmitter and 2 the IR sensor. 3 is the windscreen on which the water drops 4 sit. The transmitter 1 transmits constant light rays in the direction of arrow A. From the water drops 4 , the light is reflected in the direction of arrow B, but no longer as constant light, but as modulated alternating light. This modulation takes place on the water drops 4 , namely in that the drops constantly change their shape. The wind hits them with the tendency to flatten them. Because of their surface tension, the drops give way to the side.

In der neuen Lage wiederholt sich dieser Vorgang, und die Tropfen pendeln zurück in die alte Stellung. Die Tropfen vibrieren demzufolge ständig hin und her, was eine Modu­ lation des Lichtes erzeugt.In the new situation, this process is repeated, and the Drops swing back to the old position. The drops consequently vibrate back and forth, what a modu lation of light generated.

Fig. 3 zeigt ein Diagramm des eingestrahlten Gleichlichtes und des reflektierten Wechsellichtes. Dabei sind sowohl die Band­ breite des Wechsellichtes als auch dessen Frequenz ein Maß für die Anzahl der Wassertropfen auf der Scheibe, d. h. ein Maß für die Stärke des Regens. Fig. 3 shows a diagram of the incident DC light and reflected light change. Both the bandwidth of the alternating light and its frequency are a measure of the number of water drops on the pane, ie a measure of the intensity of the rain.

Beides, Bandbreite und Frequenz, werden in der in Fig. 4 ge­ zeigten Auswerteschaltung zur Gewinnung eines Signals U/f benutzt, mit dem letztlich die Drehgeschwindigkeit des Scheibenwischermotors gesteuert wird.Both, bandwidth and frequency, are used in the evaluation circuit shown in FIG. 4 for obtaining a signal U / f, with which the rotational speed of the wiper motor is ultimately controlled.

Im einzelnen sind in der Schaltung der Fig. 4 ein RC-Glied 5 und eine Diode 6 enthalten, der ein Verstärker 7 nachge­ schaltet ist. An dessen Ausgang steht das Signal U/f an, mit dem der nichtgezeigte Motor gesteuert wird.In particular, an RC element 5 and a diode 6 in the circuit of Fig. 4 contain the nachge an amplifier 7 is turned on. At its output is the signal U / f, with which the motor, not shown, is controlled.

Fig. 2 zeigt, wie etwa eine Vorrichtung zur Durchführung des Verfahrens im Inneren des Automobils montiert sein kann. Die Darstellung zeigt einen Blick aus dem Autofond in Richtung der Windschutzscheibe. Mit 8 ist das Autodach bezeichnet, an dem in einem Gehäuse 9 der IR-Sender 1 und der IR-Sensor 2 enthalten sind. Der Sender strahlt zwischen den Vordersitzen 10 und 11 hindurch einen räumlich begrenzten Bereich 12 an, aus dem die modulierten Strahlen zum Sensor 2 zurück reflektiert werden. FIG. 2 shows how a device for carrying out the method can be mounted inside the automobile. The illustration shows a view from the car rear towards the windshield. The car roof is designated by 8 , on which the IR transmitter 1 and the IR sensor 2 are contained in a housing 9 . The transmitter emits a spatially limited area 12 between the front seats 10 and 11 , from which the modulated beams are reflected back to the sensor 2 .

Claims (3)

1. Verfahren zur Einschaltung und stufenlosen automa­ tischen Regelung der Drehgeschwindigkeit eines Scheibenwi­ schermotors an Automobilen und ähnlichen Fahrzeugen in Abhän­ gigkeit von der Anzahl und Dicke der auf die Scheibe fallenden Regentropfen, dadurch gekennzeichnet,
a daß ein räumlich begrenzter Bereich (12) der Fenster­ scheibe (3) mit einem Lichtstrahl angestrahlt wird,
b daß der Lichtstrahl durch die auf die Fensterscheibe auffallenden Regentropfen (4) eine Modulation erfährt die in Frequenz und Amplitude von der Anzahl und Dicke der auf die Scheibe (3) gefallenen Regentropfen (4) abhängig ist,
c daß der Lichtstrahl von den Regentropfen (4) diffus zu einem optischen Sensor (2) reflektiert wird, und
d daß hinter dem Sensor (2) aus dem modulierten Reflexi­ onsstrahl ein elektrisches Signal (U/f) gewonnen wird, das in seiner Stärke von der Dichte des fallenden Regens bestimmt ist und in einer Steuerschaltung benutzt wird, um die Drehgeschwindikeit des Schei­ benwischermotors zu steuern.1. A method for switching on and stepless automatic regulation of the rotational speed of a windshield wiper motor on automobiles and similar vehicles depending on the number and thickness of the raindrops falling on the windshield, characterized in that
a that a spatially limited area ( 12 ) of the window pane ( 3 ) is illuminated with a light beam,
b that the light beam is modulated by the raindrops ( 4 ) striking the window pane, the frequency and amplitude of which modulation depend on the number and thickness of the raindrops ( 4 ) falling on the pane ( 3 ),
c that the light beam from the raindrops ( 4 ) is reflected diffusely to an optical sensor ( 2 ), and
d that behind the sensor ( 2 ) from the modulated Reflexi onsstrahl an electrical signal (U / f) is obtained, which is determined in its strength by the density of the falling rain and is used in a control circuit to benwischermotor to the speed of the disc Taxes. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß der Lichtstrahl ein Infrarot-Lichtstrahl ist.2. The method according to claim 1, characterized in that that the light beam is an infrared light beam. 3. Vorrichtung zur Durchführung des Verfahrens nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, daß der Sender (1) und der Sensor (2) des Lichtstrahls nebeneinander in einem Gehäuse (9) untergebracht sind, das im Fahrzeuginneren montiert ist, so daß die Bestrahlung der Regentropfen und die Reflexion zum Sensor (2) durch die Fensterscheibe (3) erfolgt.3. Device for performing the method according to claims 1 and 2, characterized in that the transmitter ( 1 ) and the sensor ( 2 ) of the light beam are housed side by side in a housing ( 9 ) which is mounted in the vehicle interior, so that the Irradiation of the raindrops and reflection to the sensor ( 2 ) takes place through the window pane ( 3 ).
DE19914123641 1991-07-17 1991-07-17 Vehicle windscreen wiper motor speed controller depending on rain intensity - detects modulation of infrared light reflected from screen by rain drops via optical sensor coupled to motor controller Withdrawn DE4123641A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19914123641 DE4123641A1 (en) 1991-07-17 1991-07-17 Vehicle windscreen wiper motor speed controller depending on rain intensity - detects modulation of infrared light reflected from screen by rain drops via optical sensor coupled to motor controller
JP4190636A JPH05193451A (en) 1991-07-17 1992-07-17 Method and equipment for controlling wind wiper motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19914123641 DE4123641A1 (en) 1991-07-17 1991-07-17 Vehicle windscreen wiper motor speed controller depending on rain intensity - detects modulation of infrared light reflected from screen by rain drops via optical sensor coupled to motor controller

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DE4123641A1 true DE4123641A1 (en) 1993-01-21

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DE19914123641 Withdrawn DE4123641A1 (en) 1991-07-17 1991-07-17 Vehicle windscreen wiper motor speed controller depending on rain intensity - detects modulation of infrared light reflected from screen by rain drops via optical sensor coupled to motor controller

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JP (1) JPH05193451A (en)
DE (1) DE4123641A1 (en)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9301124U1 (en) * 1993-01-28 1993-03-25 Wolle, Rudi, 5442 Mendig, De
EP0698261A1 (en) * 1993-05-07 1996-02-28 Dennis J. Hegyi Multi-fonction light sensor for vehicle
DE19755441A1 (en) * 1997-12-13 1999-06-17 Itt Mfg Enterprises Inc Adjustment of automobile rain sensors without additional circuitry
DE19801745A1 (en) * 1998-01-20 1999-07-22 Itt Mfg Enterprises Inc Car windscreen condition monitor for detecting rain
WO2000032453A1 (en) * 1998-11-28 2000-06-08 Valeo Auto-Electric Wischer Und Motoren Gmbh Device for detecting particles on a windshield
US6084519A (en) * 1993-05-07 2000-07-04 Control Devices, Inc. Multi-function light sensor for vehicle
US6313454B1 (en) 1999-07-02 2001-11-06 Donnelly Corporation Rain sensor
US6320176B1 (en) 1993-02-26 2001-11-20 Donnelly Corporation Vehicle rain sensor using imaging sensor
US6353392B1 (en) 1997-10-30 2002-03-05 Donnelly Corporation Rain sensor with fog discrimination
US7414216B2 (en) * 2005-01-07 2008-08-19 Lite-On It Corporation Touching rib of input unit and mold thereof
US7655894B2 (en) 1996-03-25 2010-02-02 Donnelly Corporation Vehicular image sensing system
US7859565B2 (en) 1993-02-26 2010-12-28 Donnelly Corporation Vision system for a vehicle including image processor
US7972045B2 (en) 2006-08-11 2011-07-05 Donnelly Corporation Automatic headlamp control system
US8017898B2 (en) 2007-08-17 2011-09-13 Magna Electronics Inc. Vehicular imaging system in an automatic headlamp control system
US8063759B2 (en) 1993-02-26 2011-11-22 Donnelly Corporation Vehicle vision system
US8446470B2 (en) 2007-10-04 2013-05-21 Magna Electronics, Inc. Combined RGB and IR imaging sensor
US8451107B2 (en) 2007-09-11 2013-05-28 Magna Electronics, Inc. Imaging system for vehicle
US9509957B2 (en) 2008-07-24 2016-11-29 Magna Electronics Inc. Vehicle imaging system
US9940528B2 (en) 2004-12-23 2018-04-10 Magna Electronics Inc. Driver assistance system for vehicle
US11137493B2 (en) * 2018-10-15 2021-10-05 GM Global Technology Operations LLC System and method for detecting precipitation using radar

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100751427B1 (en) * 2006-06-02 2007-08-23 한시연 Ambient light rejection enhanced rain sensing apparatus in array structure

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2316408A1 (en) * 1973-04-02 1974-10-10 Alfons Endl DEVICE FOR THE AUTOMATIC CONTROL OF A WINDOW CLEANING SYSTEM
DE2354100A1 (en) * 1973-10-29 1975-04-30 Karl Gerhard METHOD AND DEVICE FOR THE REGISTRATION AND ANALYSIS OF TRANSLUCENT LIQUIDS AND NON-TRANSLUCENT MATERIALS ON A TRANSPARENT DISC FOR THE AUTOMATIC CONTROL OF DISC WINDOWS, WINDOW WASHER SYSTEMS AND THE LIKE
DE3314770C2 (en) * 1983-04-23 1987-11-12 Sidler Gmbh & Co, 7400 Tuebingen, De
DE3619209A1 (en) * 1986-06-07 1987-12-10 Bosch Gmbh Robert Device for visually detecting foreign bodies

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2316408A1 (en) * 1973-04-02 1974-10-10 Alfons Endl DEVICE FOR THE AUTOMATIC CONTROL OF A WINDOW CLEANING SYSTEM
DE2354100A1 (en) * 1973-10-29 1975-04-30 Karl Gerhard METHOD AND DEVICE FOR THE REGISTRATION AND ANALYSIS OF TRANSLUCENT LIQUIDS AND NON-TRANSLUCENT MATERIALS ON A TRANSPARENT DISC FOR THE AUTOMATIC CONTROL OF DISC WINDOWS, WINDOW WASHER SYSTEMS AND THE LIKE
DE3314770C2 (en) * 1983-04-23 1987-11-12 Sidler Gmbh & Co, 7400 Tuebingen, De
DE3619209A1 (en) * 1986-06-07 1987-12-10 Bosch Gmbh Robert Device for visually detecting foreign bodies

Cited By (50)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9301124U1 (en) * 1993-01-28 1993-03-25 Wolle, Rudi, 5442 Mendig, De
US7859565B2 (en) 1993-02-26 2010-12-28 Donnelly Corporation Vision system for a vehicle including image processor
US6559435B2 (en) 1993-02-26 2003-05-06 Donnelly Corporation Vehicle headlight control using imaging sensor identifying objects by geometric configuration
US8063759B2 (en) 1993-02-26 2011-11-22 Donnelly Corporation Vehicle vision system
US6831261B2 (en) 1993-02-26 2004-12-14 Donnelly Corporation Vehicle headlight control using imaging sensor
US6320176B1 (en) 1993-02-26 2001-11-20 Donnelly Corporation Vehicle rain sensor using imaging sensor
US5703568A (en) * 1993-05-07 1997-12-30 Hegyi; Dennis J. Multi function light sensor for vehicle
EP0698261A1 (en) * 1993-05-07 1996-02-28 Dennis J. Hegyi Multi-fonction light sensor for vehicle
US6084519A (en) * 1993-05-07 2000-07-04 Control Devices, Inc. Multi-function light sensor for vehicle
EP0698261A4 (en) * 1993-05-07 1996-07-03 Dennis J Hegyi Multi-fonction light sensor for vehicle
US8222588B2 (en) 1996-03-25 2012-07-17 Donnelly Corporation Vehicular image sensing system
US7994462B2 (en) 1996-03-25 2011-08-09 Donnelly Corporation Vehicular image sensing system
US8324552B2 (en) 1996-03-25 2012-12-04 Donnelly Corporation Vehicular image sensing system
US8481910B2 (en) 1996-03-25 2013-07-09 Donnelly Corporation Vehicular image sensing system
US7655894B2 (en) 1996-03-25 2010-02-02 Donnelly Corporation Vehicular image sensing system
US8492698B2 (en) 1996-03-25 2013-07-23 Donnelly Corporation Driver assistance system for a vehicle
US6806452B2 (en) 1997-09-22 2004-10-19 Donnelly Corporation Interior rearview mirror system including a forward facing video device
US6353392B1 (en) 1997-10-30 2002-03-05 Donnelly Corporation Rain sensor with fog discrimination
US6768422B2 (en) 1997-10-30 2004-07-27 Donnelly Corporation Precipitation sensor
DE19755441A1 (en) * 1997-12-13 1999-06-17 Itt Mfg Enterprises Inc Adjustment of automobile rain sensors without additional circuitry
DE19801745A1 (en) * 1998-01-20 1999-07-22 Itt Mfg Enterprises Inc Car windscreen condition monitor for detecting rain
US6373215B1 (en) 1998-01-20 2002-04-16 Itt Manufacturing Enterprises, Inc. Device for monitoring the state of a window pane
WO2000032453A1 (en) * 1998-11-28 2000-06-08 Valeo Auto-Electric Wischer Und Motoren Gmbh Device for detecting particles on a windshield
US6313454B1 (en) 1999-07-02 2001-11-06 Donnelly Corporation Rain sensor
US8203443B2 (en) 1999-08-12 2012-06-19 Donnelly Corporation Vehicle vision system
US8629768B2 (en) 1999-08-12 2014-01-14 Donnelly Corporation Vehicle vision system
US11308720B2 (en) 2004-12-23 2022-04-19 Magna Electronics Inc. Vehicular imaging system
US10509972B2 (en) 2004-12-23 2019-12-17 Magna Electronics Inc. Vehicular vision system
US9940528B2 (en) 2004-12-23 2018-04-10 Magna Electronics Inc. Driver assistance system for vehicle
US7414216B2 (en) * 2005-01-07 2008-08-19 Lite-On It Corporation Touching rib of input unit and mold thereof
US8434919B2 (en) 2006-08-11 2013-05-07 Donnelly Corporation Adaptive forward lighting system for vehicle
US8162518B2 (en) 2006-08-11 2012-04-24 Donnelly Corporation Adaptive forward lighting system for vehicle
US7972045B2 (en) 2006-08-11 2011-07-05 Donnelly Corporation Automatic headlamp control system
US8017898B2 (en) 2007-08-17 2011-09-13 Magna Electronics Inc. Vehicular imaging system in an automatic headlamp control system
US9018577B2 (en) 2007-08-17 2015-04-28 Magna Electronics Inc. Vehicular imaging system with camera misalignment correction and capturing image data at different resolution levels dependent on distance to object in field of view
US11328447B2 (en) 2007-08-17 2022-05-10 Magna Electronics Inc. Method of blockage determination and misalignment correction for vehicular vision system
US9972100B2 (en) 2007-08-17 2018-05-15 Magna Electronics Inc. Vehicular imaging system comprising an imaging device with a single image sensor and image processor for determining a totally blocked state or partially blocked state of the single image sensor as well as an automatic correction for misalignment of the imaging device
US11908166B2 (en) 2007-08-17 2024-02-20 Magna Electronics Inc. Vehicular imaging system with misalignment correction of camera
US10726578B2 (en) 2007-08-17 2020-07-28 Magna Electronics Inc. Vehicular imaging system with blockage determination and misalignment correction
US11613209B2 (en) 2007-09-11 2023-03-28 Magna Electronics Inc. System and method for guiding reversing of a vehicle toward a trailer hitch
US9796332B2 (en) 2007-09-11 2017-10-24 Magna Electronics Inc. Imaging system for vehicle
US10766417B2 (en) 2007-09-11 2020-09-08 Magna Electronics Inc. Imaging system for vehicle
US8451107B2 (en) 2007-09-11 2013-05-28 Magna Electronics, Inc. Imaging system for vehicle
US11165975B2 (en) 2007-10-04 2021-11-02 Magna Electronics Inc. Imaging system for vehicle
US10616507B2 (en) 2007-10-04 2020-04-07 Magna Electronics Inc. Imaging system for vehicle
US10003755B2 (en) 2007-10-04 2018-06-19 Magna Electronics Inc. Imaging system for vehicle
US8446470B2 (en) 2007-10-04 2013-05-21 Magna Electronics, Inc. Combined RGB and IR imaging sensor
US8908040B2 (en) 2007-10-04 2014-12-09 Magna Electronics Inc. Imaging system for vehicle
US9509957B2 (en) 2008-07-24 2016-11-29 Magna Electronics Inc. Vehicle imaging system
US11137493B2 (en) * 2018-10-15 2021-10-05 GM Global Technology Operations LLC System and method for detecting precipitation using radar

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