DE10005127A1 - Rain sensor with integrated light sensor for cars, has brightness sensor for measuring the ambient light, with light source whose light is partly reflected on a transparent upper surface - Google Patents

Rain sensor with integrated light sensor for cars, has brightness sensor for measuring the ambient light, with light source whose light is partly reflected on a transparent upper surface

Info

Publication number
DE10005127A1
DE10005127A1 DE2000105127 DE10005127A DE10005127A1 DE 10005127 A1 DE10005127 A1 DE 10005127A1 DE 2000105127 DE2000105127 DE 2000105127 DE 10005127 A DE10005127 A DE 10005127A DE 10005127 A1 DE10005127 A1 DE 10005127A1
Authority
DE
Germany
Prior art keywords
light
sensor
brightness
rain sensor
rain
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
Application number
DE2000105127
Other languages
German (de)
Inventor
Andreas Reichert
Andreas Laegler
Juergen Nies
Thomas Schuler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valeo Wischersysteme GmbH
Original Assignee
Valeo Auto Electric Wischer und Motoren GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Valeo Auto Electric Wischer und Motoren GmbH filed Critical Valeo Auto Electric Wischer und Motoren GmbH
Priority to DE2000105127 priority Critical patent/DE10005127A1/en
Publication of DE10005127A1 publication Critical patent/DE10005127A1/en
Ceased 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
    • 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
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
    • B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
    • B60Q1/14—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights having dimming means
    • B60Q1/1415—Dimming circuits
    • B60Q1/1423—Automatic dimming circuits, i.e. switching between high beam and low beam due to change of ambient light or light level in road traffic
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/10—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q2300/00—Indexing codes for automatically adjustable headlamps or automatically dimmable headlamps
    • B60Q2300/30—Indexing codes relating to the vehicle environment
    • B60Q2300/31—Atmospheric conditions
    • B60Q2300/314—Ambient light
    • 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
    • B60S1/0862—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 including additional sensors
    • B60S1/087—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 including additional sensors including an ambient light sensor

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Abstract

The rain sensor has a brightness sensor for measuring the ambient light quality. The rain sensor has at least one light source whose light is partly reflected on a transparent upper surface which is sensitive to rain. The rain sensor has a compensation switch for compensation of additional surrounding light falling on the sensor. The light source for the rain sensor is one or more LEDs e.g. Infrared LEDs. The measured light is used to control the operation of the windscreen wipers, air conditioning and dipped headlight, brake lights and/or brightness of the car inside lights.

Description

Die Erfindung betrifft einen Regensensor für Kraftfahrzeuge.The invention relates to a rain sensor for motor vehicles.

Regensensoren werden in einer Vielzahl von Kraftfahrzeugen eingebaut. Damit die Regensensoren unabhängig von der Helligkeit in der Umgebung des Kraftfahrzeugs arbeiten, muss eine entsprechende Kompensationsschaltung vorhanden sein.Rain sensors are used in a variety of automobiles built-in. So that the rain sensors regardless of the Brightness must work in the area surrounding the motor vehicle a corresponding compensation circuit is available.

Außerdem sind in Kraftfahrzeugen viele Funktionen integriert, welche von der Helligkeit in der Umgebung des Kraftfahrzeugs beeinflußt werden. Ein Beispiel für eine solche Funktion ist das automatische Einschalten der Kraftfahrzeugbeleuchtung mit Einbruch der Dämmerung. Dazu muß die Helligkeit in der Umgebung des Kraftfahrzeugs gemessen werden. There are also many functions in motor vehicles integrated, which depends on the brightness around the Motor vehicle are affected. An example of a such function is the automatic switching on of the Motor vehicle lighting at dusk. To must be the brightness around the vehicle be measured.  

Der Erfindung liegt die Aufgabe zugrunde, die Helligkeit in der Umgebung eines Kraftfahrzeugs einfach, kostengünstig und ausreichend genau zu messen.The invention has for its object the brightness in the environment of a motor vehicle simple, inexpensive and to measure sufficiently accurately.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass ein Regensensor für Kraftfahrzeuge als Sensor zur Messung der Umgebungshelligkeit eingesetzt wird, so dass dessen Kompensation der Umgebungshelligkeit ein Maß für die Umgebungshelligkeit darstellt. Durch diese neue Verwendung eines Regensensors kann auf einen gesonderten Lichtsensor zur Ermittlung der Umgebungshelligkeit verzichtet und dessen Kosten eingespart werden. Da der Lichtsensor des Regensensors die Helligkeit in der gesamten Umgebung des Kraftfahrzeugs ermittelt, ist das aus dieser Messung resultierende Signal bei verschiedensten Funktionen des Kraftfahrzeugs als Eingangsgröße geeignet.This object is achieved in that a Rain sensor for motor vehicles as a sensor for measuring the Ambient brightness is used, so that Compensation of the ambient brightness is a measure of that Represents ambient brightness. Through this new use a rain sensor can be connected to a separate light sensor to determine the ambient brightness and its Costs can be saved. Since the light sensor of the Rain sensor the brightness in the entire environment of the Motor vehicle determined, that is from this measurement resulting signal in various functions of the Motor vehicle suitable as an input variable.

Bei einer Variante der Erfindung ist vorgesehen, dass der Regensensor mindestens eine Lichtquelle aufweist, deren Licht an einer von Regen benetzbaren Oberfläche einer transparenten Scheibe mindestens teilweise reflektiert, dass mindestens ein Teil des reflektierten Lichts auf einen Lichtsensor fällt, dass der Regensensor eine Kompensationsschaltung zur Kompensation des zusätzlich auf den Lichtsensor auftreffenden Umgebungslichts aufweist und dass der aus dem Lichtsensor mittels der Kompensationsschaltung abgeführte elektrische Kompensationsstrom proportional zur Intensität des Umgebungslichts ist, so dass ohne zusätzlichen Bauaufwand ein Signal verfügbar ist, das proportional zur Intensität des Umgebungslichts ist.In a variant of the invention it is provided that the Rain sensor has at least one light source, the Light on a surface wetted by rain transparent pane at least partially reflects that at least part of the reflected light on one Light sensor drops that the rain sensor one Compensation circuit to compensate for the additional  the ambient light striking the light sensor and that from the light sensor using the Compensation circuit dissipated electrical Compensation current proportional to the intensity of the Ambient light is there, so without additional construction effort a signal is available that is proportional to the intensity of ambient light.

Bei einer anderen Ausgestaltung der Erfindung wird der Spannungsabfall des Kompensationsstroms an einem elektrischen Widerstand als Maß für die Umgebungshelligkeit ausgewertet, so dass, je nach Applikation, ein geeignetes Signal zur Verfügung gestellt werden kann.In another embodiment of the invention, the Voltage drop of the compensation current at one electrical resistance as a measure of the ambient brightness evaluated so that, depending on the application, a suitable Signal can be provided.

Bei weiteren Ausgestaltungen der Erfindung besteht die Lichtquelle aus einer oder mehreren LEDs, bevorzugt Infrarot-LEDs und/oder ist der Lichtsensor im Wellenlängenbereich von infrarotem Licht empfindlich, so dass die Messung der Umgebungshelligkeit nur in sehr geringem Umfang von künstlichen Lichtquellen in der Umgebung des Kraftfahrzeugs beeinflußt wird.In further embodiments of the invention, the Light source from one or more LEDs, preferred Infrared LEDs and / or is the light sensor in the Wavelength range sensitive to infrared light, so that the measurement of the ambient brightness is only very small amount of artificial light sources in the area of the motor vehicle is affected.

In weiterer Ergänzung der Erfindung kompensiert die Kompensationsschaltung Helligkeitsschwankungen mit einer Frequenz von bis zu 250 Hz, so dass auch langsame Änderungen der Helligkeit in der Umgebung des Kraftfahrzeugs ermittelt werden können.In a further supplement to the invention, the Compensation circuit brightness fluctuations with a  Frequency up to 250 Hz, so even slow changes the brightness in the area surrounding the motor vehicle can be.

Bei einer weiteren Ausgestaltung der Erfindung ist vorgesehen, dass die vom Regensensor ermittelte Umgebungshelligkeit als Steuersignal genutzt wird für ein Steuergerät für die Beleuchtungsanlage eines Kraftfahrzeugs, wobei das Steuergerät die Beleuchtungsanlage einschaltet, wenn der Fahrer das Kraftfahrzeug abschließt oder aufschließt, und wenn die Helligkeit in der Umgebung des Kraftfahrzeugs einen Helligkeitswert H1 unterschreitet. Bei dieser Verwendung des Regensensors kann das Steuergerät für die Beleuchtungsanlage ohne zusätzlichen Sensor dahingehend verbessert werden, dass die Beleuchtung nur bei Dunkelheit oder in der Dämmerung nicht aber bei Tage eingeschaltet wird. Dadurch bleibt der Komfort für den Fahrer des Kraftfahrzeugs erhalten und die Glühlampen der Beleuchtungsanlage und die Batterie des Kraftfahrzeugs werden geschont.In a further embodiment of the invention it is provided that the ambient brightness determined by the rain sensor is used as a control signal for a control unit for the lighting system of a motor vehicle, the control unit switching on the lighting system when the driver locks or unlocks the motor vehicle and when the brightness in the Environment of the motor vehicle falls below a brightness value H 1 . With this use of the rain sensor, the control unit for the lighting system can be improved without an additional sensor in such a way that the lighting is only switched on in the dark or at dusk, but not during the day. This maintains the comfort for the driver of the motor vehicle and protects the light bulbs of the lighting system and the battery of the motor vehicle.

Bei einer anderen Ausgestaltung der Erfindung ist vorgesehen, dass die gemessene Umgebungshelligkeit für die Anpassung der Empfindlichkeit der Scheibenwischersteuerung des Scheibenwischers die Steuerung der Klimaanlage und/oder des Abblendlichts der Anpassung der Helligkeit der Bremsleuchten und/oder der Helligkeit der Innenbeleuchtung des Kraftfahrzeugs benutzt wird, so dass durch die erfindungsgemäße Verwendung eines Regensensors für Kraftfahrzeuge als Sensor zur Messung der Umgebungshelligkeit für die genannten Applikationen kein zusätzlicher Sensor zur Messung der Umgebungshelligkeit benötigt wird. Dadurch vervielfacht sich der Nutzen, welcher aus der erfindungsgemäßen Verwendung des Regensensors resultiert.In another embodiment of the invention provided that the measured ambient brightness for the Adjustment of the sensitivity of the wiper control  control of the air conditioning system and / or the low beam of the adjustment of the brightness of the Brake lights and / or the brightness of the interior lighting of the motor vehicle is used, so that by the Use of a rain sensor for Motor vehicles as a sensor for measuring the Ambient brightness for the applications mentioned none additional sensor for measuring the ambient brightness is needed. This multiplies the benefits, which from the use of the rain sensor according to the invention results.

Alle in der Beschreibung und den nachfolgenden Ansprüchen dargestellten Merkmale können sowohl einzeln als auch in beliebiger Kombination miteinander erfindungswesentlich sein.All in the description and the following claims features shown can be used both individually and in any combination essential to the invention his.

Claims (8)

1. Verwendung eines Regensensors für Kraftfahrzeuge als Sensor zur Messung der Umgebungshelligkeit.1. Using a rain sensor for motor vehicles as Sensor for measuring the ambient brightness. 2. Regensensor nach Anspruch 1, dadurch gekennzeichnet, dass der Regensensor mindestens eine Lichtquelle aufweist, deren Licht an einer von Regen benetzbaren Oberfläche einer transparenten Scheibe mindestens teilweise reflektiert wird, dass mindestens ein Teil des reflektierten Lichts auf einen Lichtsensor fällt, dass der Regensensor eine Kompensationsschaltung zur Kompensation des zusätzlich auf den Lichtsensor auftreffenden Umgebungslichts aufweist, und dass der aus dem Lichtsensor mittels der Kompensationsschaltung abgeführte elektrische Kompensationsstrom proportional zur Intensität des Umgebungslichts ist.2. Rain sensor according to claim 1, characterized in that the rain sensor has at least one light source has whose light on a rain wettable Surface of a transparent pane at least is partially reflected that at least part of the reflected light falls on a light sensor, that the rain sensor has a compensation circuit for Compensation of the additional on the light sensor has incident ambient light, and that the from the light sensor using the compensation circuit dissipated electrical compensation current proportional to the intensity of the ambient light. 3. Regensensor nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Spannungsabfall des Kompensationsstroms an einem elektrischen Widerstand als Maß für die Umgebungshelligkeit ausgewertet wird. 3. Rain sensor according to one of the preceding claims, characterized in that the voltage drop of the Compensation current on an electrical resistor is evaluated as a measure of the ambient brightness.   4. Regensensor nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Lichtquelle aus einer oder mehreren LEDs, bevorzugt Infrarot-LEDs besteht.4. Rain sensor according to one of the preceding claims, characterized in that the light source from a or several LEDs, preferably infrared LEDs. 5. Regensensor nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Lichtsensor im Wellenlängen-Bereich von infrarotem Licht empfindlich ist.5. Rain sensor according to one of the preceding claims, characterized in that the light sensor in Wavelength range sensitive to infrared light is. 6. Regensensor nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Kompensationsschaltung Helligkeitsschwankungen mit einer Frequenz von bis zu 250 Hz kompensiert.6. Rain sensor according to one of the preceding claims, characterized in that the compensation circuit Brightness fluctuations with a frequency of up to 250 Hz compensated. 7. Regensensor nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die vom Regensensor ermittelte Umgebungshelligkeit als Steuersignal genutzt wird für ein Steuergerät für die Beleuchtungsanlage eines Kraftfahrzeugs, wobei das Steuergerät die Beleuchtungsanlage einschaltet, wenn der Fahrer das Kraftfahrzeug abschließt oder aufschließt, und wenn die Helligkeit in der Umgebung des Kraftfahrzeugs einen Helligkeitswert H1 unterschreitet. 7. Rain sensor according to one of the preceding claims, characterized in that the ambient brightness determined by the rain sensor is used as a control signal for a control unit for the lighting system of a motor vehicle, the control unit switching on the lighting system when the driver locks or unlocks the motor vehicle, and when the Brightness in the surroundings of the motor vehicle falls below a brightness value H 1 . 8. Regensensor nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die gemessene Umgebungshelligkeit für die Anpassung der Empfindlichkeit der Scheibenwischersteuerung des Scheibenwischers, die Steuerung der Klimaanlage und/ oder des Abblendlichts, der Anpassung der Helligkeit der Bremsleuchten und/oder der Helligkeit der Innenbeleuchtung des Kraftfahrzeugs benutzt wird.8. Rain sensor according to one of the preceding claims, characterized in that the measured Ambient brightness for adjusting the Sensitivity of the wiper control of the Wipers, air conditioning controls and / or the low beam, the adjustment of the brightness the brake lights and / or the brightness of the Interior lighting of the motor vehicle is used.
DE2000105127 2000-02-07 2000-02-07 Rain sensor with integrated light sensor for cars, has brightness sensor for measuring the ambient light, with light source whose light is partly reflected on a transparent upper surface Ceased DE10005127A1 (en)

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DE2000105127 DE10005127A1 (en) 2000-02-07 2000-02-07 Rain sensor with integrated light sensor for cars, has brightness sensor for measuring the ambient light, with light source whose light is partly reflected on a transparent upper surface

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DE2000105127 DE10005127A1 (en) 2000-02-07 2000-02-07 Rain sensor with integrated light sensor for cars, has brightness sensor for measuring the ambient light, with light source whose light is partly reflected on a transparent upper surface

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Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002054023A3 (en) * 2000-12-28 2002-10-10 Valeo Electrical System Inc Ambient light detector for off-the-glass rain sensor
EP1359407A2 (en) * 2002-05-02 2003-11-05 Spillecke Ralf Sensor element for detection of condensation
DE10328215A1 (en) * 2003-06-24 2005-01-27 Hella Kgaa Hueck & Co. Automatic system for switching a motor vehicle lighting system on and off has control operating on both external light level and rain sensor
DE10332205A1 (en) * 2003-07-16 2005-02-03 Daimlerchrysler Ag Air conditioning for a motor vehicle
DE10359982A1 (en) * 2003-12-19 2005-07-14 Volkswagen Ag Motor vehicle rear light unit has device to control the intensities of tail light brake light and direction indicators in dependence on a signal from a rain sensor
DE102004002334A1 (en) * 2004-01-16 2005-08-11 Adam Opel Ag Control circuit for a motor vehicle's lighting facility has a backlight and a sensor for detecting surrounding light as it dwindles
DE102005038178B3 (en) * 2005-08-12 2007-01-18 Audi Ag Method of operating a sensor assisted system in a vehicle such as a driver assist system using two brightness sensors with different but overlapping ranges
DE102005037344A1 (en) * 2005-08-04 2007-02-08 Sinisa Bodrozic Passive safety system for road vehicles
US7768209B2 (en) 2004-10-12 2010-08-03 Volkswagen Ag Method and device for controlling a motor-vehicle lighting system
DE102010026562A1 (en) * 2010-07-08 2012-01-12 Hella Kgaa Hueck & Co. Sensor arrangement for detecting environmental conditions
CN102866695A (en) * 2012-09-25 2013-01-09 浙江吉利汽车研究院有限公司杭州分公司 Aided driving system on rain or snow days and aided driving method
DE102012010888A1 (en) * 2012-06-01 2013-12-05 Audi Ag Method for controlling stop light of motor car, involves adjusting light intensity of stop light based on driving conditions, and controlling driving conditions based on line type of light or visibility by using control unit
DE102016113940A1 (en) 2016-07-28 2018-02-01 Valeo Schalter Und Sensoren Gmbh Optical sensor device for a motor vehicle comprising a solar sensor, driver assistance system, motor vehicle and method
DE102017213992A1 (en) 2017-08-10 2019-02-14 Audi Ag Method for operating an interior lighting device, interior lighting device and motor vehicle with an interior lighting device
CN112810554A (en) * 2021-02-19 2021-05-18 安徽安凯汽车股份有限公司 Application of rainfall light sensor on commercial vehicle
DE102009046085B4 (en) * 2008-10-29 2021-05-20 Denso Corporation Light detection device
US20220252443A1 (en) * 2018-11-21 2022-08-11 Nec Communication Systems, Ltd. Volume measurement apparatus, system, method, and program

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Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6806485B2 (en) 2000-12-28 2004-10-19 Valeo Electrical Systems, Inc. Ambient light detector for off-the-glass rain sensor
WO2002054023A3 (en) * 2000-12-28 2002-10-10 Valeo Electrical System Inc Ambient light detector for off-the-glass rain sensor
EP1359407A2 (en) * 2002-05-02 2003-11-05 Spillecke Ralf Sensor element for detection of condensation
EP1359407A3 (en) * 2002-05-02 2004-02-25 Spillecke Ralf Sensor element for detection of condensation
DE10328215B4 (en) * 2003-06-24 2009-12-31 Hella Kgaa Hueck & Co. System for automatically switching on and off a vehicle lighting device
DE10328215A1 (en) * 2003-06-24 2005-01-27 Hella Kgaa Hueck & Co. Automatic system for switching a motor vehicle lighting system on and off has control operating on both external light level and rain sensor
DE10332205A1 (en) * 2003-07-16 2005-02-03 Daimlerchrysler Ag Air conditioning for a motor vehicle
DE10359982A1 (en) * 2003-12-19 2005-07-14 Volkswagen Ag Motor vehicle rear light unit has device to control the intensities of tail light brake light and direction indicators in dependence on a signal from a rain sensor
DE102004002334A1 (en) * 2004-01-16 2005-08-11 Adam Opel Ag Control circuit for a motor vehicle's lighting facility has a backlight and a sensor for detecting surrounding light as it dwindles
DE102004002334B4 (en) * 2004-01-16 2006-01-26 Adam Opel Ag Control circuit for the lighting system of a motor vehicle
US7768209B2 (en) 2004-10-12 2010-08-03 Volkswagen Ag Method and device for controlling a motor-vehicle lighting system
DE102005037344A1 (en) * 2005-08-04 2007-02-08 Sinisa Bodrozic Passive safety system for road vehicles
DE102005038178B3 (en) * 2005-08-12 2007-01-18 Audi Ag Method of operating a sensor assisted system in a vehicle such as a driver assist system using two brightness sensors with different but overlapping ranges
DE102009046085B4 (en) * 2008-10-29 2021-05-20 Denso Corporation Light detection device
DE102010026562A1 (en) * 2010-07-08 2012-01-12 Hella Kgaa Hueck & Co. Sensor arrangement for detecting environmental conditions
US8434359B2 (en) 2010-07-08 2013-05-07 Hella Kgaa Hueck & Co. Sensor arrangement for detecting ambient conditions
DE102012010888B4 (en) 2012-06-01 2019-03-28 Audi Ag Method for controlling a motor vehicle brake light and a motor vehicle
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