EP1189790A1 - Procede et dispositif pour detecter la presence de substances telles que de l'eau, de la buee, des salissures et similaires sur la vitre d'un vehicule - Google Patents

Procede et dispositif pour detecter la presence de substances telles que de l'eau, de la buee, des salissures et similaires sur la vitre d'un vehicule

Info

Publication number
EP1189790A1
EP1189790A1 EP00935118A EP00935118A EP1189790A1 EP 1189790 A1 EP1189790 A1 EP 1189790A1 EP 00935118 A EP00935118 A EP 00935118A EP 00935118 A EP00935118 A EP 00935118A EP 1189790 A1 EP1189790 A1 EP 1189790A1
Authority
EP
European Patent Office
Prior art keywords
signals
pane
lens
lens units
depth
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Withdrawn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
EP00935118A
Other languages
German (de)
English (en)
Inventor
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.)
SCHULER, THOMAS
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
Publication of EP1189790A1 publication Critical patent/EP1189790A1/fr
Withdrawn legal-status Critical Current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
    • 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
    • B60S1/0837—Optical rain sensor with a particular arrangement of the optical elements
    • 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
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/8806—Specially adapted optical and illumination features
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/94—Investigating contamination, e.g. dust
    • 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
    • B60S1/0844—Optical rain sensor including a camera

Definitions

  • Device and method for detecting media such as water, fogging, dirt and the like on a window of a vehicle
  • the present invention relates to a device and a method for detecting media such as water, fogging, dirt and the like on a window of a vehicle, with a lens system, with a receiving unit receiving the signals detected by the lens system and with an evaluating the signals Evaluation unit.
  • Such known devices are attached using various connection techniques directly to the inside of the windshield, in particular in the area of the wiping area of a windshield wiper that removes raindrops from the windshield.
  • Such an attachment has in particular the disadvantage that the person driving the vehicle is circumspect by the operator
  • the present invention is therefore based on the object of proposing a device and a method for detecting media such as water, fogging, dirt and the like on the surfaces of a window of a vehicle which does not impair the circumspection and the field of vision of the person driving the vehicle and which ensures reliable detection of, for example, raindrops on the outside of the pane and, for example, moisture on the inside of the pane.
  • a device of the type mentioned at the outset which provides that the device is not in direct contact with the disk, that the lens system has at least two lens units, that the lens units capture the same area of the disk, that the depth of field of the two lens units is the same Depth range of the disk covers that each lens unit is assigned a separate receiving unit and that the evaluation unit evaluates the signals received by the at least two receiving units.
  • the device according to the invention has the particular advantage that the device is not attached directly to the window, but at any point outside the field of vision of the person driving the vehicle.
  • Another advantage of the invention is that, due to the limited depth of field of the two lens units that capture the disk, only the area that is actually relevant for a later signal evaluation is captured.
  • the inside and outside of the pane are advantageously captured by the device in that the device according to the invention is not in direct contact with the pane.
  • the depth of field of the two lens systems is limited to the depth of the disc.
  • the lens unit is an optical lens unit.
  • the receiving unit is an optoelectronic receiving unit.
  • Such a receiving unit converts the signals received by means of the optical lens unit into electrical signals.
  • a variant of the invention provides that the device is arranged on the interior rear-view mirror, in particular on the interior rear-view mirror base, of the vehicle. Such an arrangement has the advantage that the field of vision of the person driving the vehicle is not impaired or disturbed by the attachment of the device according to the invention.
  • Another embodiment of the invention provides that the device is arranged on the dashboard. Such an arrangement also does not affect the prudence of the person driving the vehicle.
  • a further development according to the invention provides that the area of the pane captured by the lens units is illuminated with an illumination source. It is thereby advantageously achieved that the contrast sharpness of the pane surfaces is increased and a better detection of the pane surface with possibly. media available on it is made possible.
  • the illumination source is an infrared light source.
  • An infrared light source has the particular advantage that the device according to the invention is functional even in the dark.
  • Another advantageous embodiment of the invention provides that, in addition to the one illumination source, at least one further illumination source is present.
  • a further illumination source can ensure that sensitivity to environmental effects, such as other light sources, is minimized.
  • the at least one illumination source emits clocked light signals.
  • Such light signals can also ensure that the environmental effects do not influence the correct detection of the signals.
  • the method according to the invention has the particular advantage that it is determined in a simple manner whether the medium is on the inside or outside of the pane and whether the medium is of a static nature, in particular dirt, fogging or dynamic nature, for example Rain, act. Another advantage of the method according to the invention is that it is fully functional just without physical contact with the pane.
  • the signals are assigned to the corresponding disk sides by means of triangulation and correlation of the signals.
  • Such an assignment has the advantage that it can be determined in a simple manner whether and which signal is to be assigned to the inside of the pane and which to the outside.
  • a further development of the method according to the invention provides that undesired environmental influences, such as signal noise, shadows, lights and the like, are eliminated by comparing the intensity, the position and the time profile of the signals. Such an elimination of environmental influences leads to a reliable detection of whether and which medium is present on which side of the disk.
  • the contrast of the inner pane surface and the outer pane surface is increased by illuminating the region of the pane which is captured by the lens units. A such an increase in contrast leads to reliable detection of the corresponding signal.
  • Illumination using an infrared light can also be used in the dark.
  • An advantageous variant of the method according to the invention provides that there are several, but at least two, light sources for lighting. This increases the insensitivity to environmental effects.
  • the at least one illumination source emits clocked light signals. This also minimizes possible interference of the signals.
  • a further development of the method provides that, on the basis of the determination of a medium of dynamic nature on the outside of the pane, a wiping device for wiping the outside of the pane is activated.
  • Activating a wiper device has the advantage that the corresponding medium, e.g. Rain or snow is removed without any action by the person driving the vehicle.
  • a variant of the method provides that due to the determination of a medium of a static nature on the A ventilation device for removing the fitting is activated on the inside of the pane, in particular of moisture fitting. This advantageously means that without activating the ventilation device by the person driving the vehicle, a corresponding fitting on the inside of the pane is removed.
  • the figure shows a device according to the invention in a schematic representation.
  • a pane 1 is monitored by two lens units 2 and 3 in a monitoring area 4, which is shown hatched.
  • the lens units 2 and 3 are focused in such a way that they map the area between the depth of field limitation lines 5 and 6.
  • the depth of field is thus only slightly larger than the thickness of the disc 1. This prevents possible interference, such as lights or shadows, from affecting the image of the two sides of the disc 1.
  • a receiving unit 7 is located on the side of the two lens units 2 and 3 facing away from the pane 1 and 8 available.
  • the receiving units 7 and 8 can be, for example, optoelectronic sensors or arrays which receive the optical signals detected by the lens units 2 and 3 and convert them into electrical ones.
  • the receiving units 7 and 8 are connected to an evaluation unit 9.
  • the evaluation unit 9 evaluates whether a medium is present on one of the sides of the pane 1, namely on the inside 10 of the pane or on the outside 11 of the pane. In addition, the evaluation unit differentiates between a medium of a static nature, i.e. Dirt or fogging and a medium of dynamic nature, such as Snow or rain.
  • a medium of a static nature i.e. Dirt or fogging
  • a medium of dynamic nature such as Snow or rain.
  • an assignment of the intensities to the disk sides 10 and 11 can be determined, for example.
  • the two diagrams 12 and 13 show examples of the intensities of the signals over the distance x.
  • the intensities On the basis of the strength and quality of the signal intensities, it can be determined, for example, whether and what kind of medium is present on the disk 1. If the intensities are plotted over the elapsed time t, it can in particular be determined from this whether the medium present on the disk 1 is of a static or dynamic nature. If an uneven intensity curve of the signals over time can be determined, the medium being recorded is a dynamic one. If the intensity curve is largely constant over time, the medium is static in nature.
  • the evaluation unit 9 can cause a wiping device for wiping the outside of the pane 11 to be activated.
  • a ventilation device for removing the fitting on the inside of the pane 10 can be activated.
  • the figure also shows an illumination source 14, in particular an infrared illumination.
  • a lighting source 14 enables in particular the use of the device according to the invention in the dark. It is also conceivable that the illumination source 14 emits clocked light signals in order to improve the contrast sharpness of the To increase the inside and outside of the pane 11 and the media on it.
  • Such a timing of the lighting source 14 is controlled by the evaluation unit 9, which compares the signals detected by means of the lens units 2 and 3 with the timing.

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

L'invention concerne un dispositif et un procédé permettant de détecter la présence de substances telles que de l'eau, de la buée, des salissures et similaires sur les deux faces d'une vitre de véhicule, ledit dispositif ne se trouvant pas directement contre la vitre.
EP00935118A 1999-06-29 2000-05-25 Procede et dispositif pour detecter la presence de substances telles que de l'eau, de la buee, des salissures et similaires sur la vitre d'un vehicule Withdrawn EP1189790A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE1999129964 DE19929964A1 (de) 1999-06-29 1999-06-29 Einrichtung und Verfahren zur Erfassung von Medien wie Wasser, Beschlag, Schmutz und dergleichen auf einer Scheibe eines Fahrzeuges
DE19929964 1999-06-29
PCT/EP2000/004770 WO2001002222A1 (fr) 1999-06-29 2000-05-25 Procede et dispositif pour detecter la presence de substances telles que de l'eau, de la buee, des salissures et similaires sur la vitre d'un vehicule

Publications (1)

Publication Number Publication Date
EP1189790A1 true EP1189790A1 (fr) 2002-03-27

Family

ID=7913057

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00935118A Withdrawn EP1189790A1 (fr) 1999-06-29 2000-05-25 Procede et dispositif pour detecter la presence de substances telles que de l'eau, de la buee, des salissures et similaires sur la vitre d'un vehicule

Country Status (3)

Country Link
EP (1) EP1189790A1 (fr)
DE (1) DE19929964A1 (fr)
WO (1) WO2001002222A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6596978B2 (en) * 2001-06-28 2003-07-22 Valeo Electrical Systems, Inc. Stereo imaging rain sensor
DE10145985C2 (de) * 2001-09-18 2003-11-13 Fkfs Forschungsinstitut Fuer K Verfahren und Vorrichtungen zur Bestimmung der quantitativen Verschmutzung von Oberflächen
DE10150606A1 (de) * 2001-10-12 2003-04-17 Bayerische Motoren Werke Ag Vorrichtung und Verfahren zum Erkennen von Scheibenbeschlag bei einem Fahrzeug
DE10233349A1 (de) * 2002-07-23 2004-02-12 Leopold Kostal Gmbh & Co Kg Sensoreinrichtung
DE10233348A1 (de) * 2002-07-23 2004-01-29 Leopold Kostal Gmbh & Co Kg Sensoreinrichtung
EP1496335A3 (fr) * 2003-07-11 2005-04-06 Leuze electronic GmbH + Co KG Dispositif optoélectronique
DE102010020537A1 (de) 2010-05-14 2011-11-17 H&S Robotic Solutions GbR (vertretungsberechtigter Gesellschafter: Bernd-Helge Schäfer, 67661 Kaiserslautern) Wasserdetektor

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4202121C1 (en) * 1992-01-27 1992-12-24 Leopold Kostal Gmbh & Co Kg, 5880 Luedenscheid, De Sensor assembly detecting wetness of motor vehicle windscreen - includes receiver for radiation reflected from precipitation esp. drops of rain
DE4401755C2 (de) * 1994-01-21 1997-08-28 Jenoptik Jena Gmbh Kombiniertes Sichtweiten- und Niederschlagsmeßgerät
EP0718624A3 (fr) * 1994-12-19 1997-07-30 At & T Corp Procédé et appareil pour l'illumination des matériaux translucides ou semitransparents
DE19505011C2 (de) * 1995-02-15 2003-12-24 Teves Gmbh Alfred Anordnung eines optischen Regensensors
DE19631163C2 (de) * 1996-08-01 2000-05-18 Thomas Huhn Vorrichtung zum Prüfen und Inspizieren eines Glaskörpers
DE19803694C1 (de) * 1998-01-30 1999-04-22 Kostal Leopold Gmbh & Co Kg Verfahren zum Detektieren von auf einer lichtdurchlässigen Scheibe befindlichen Objekten sowie Vorrichtung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0102222A1 *

Also Published As

Publication number Publication date
DE19929964A1 (de) 2001-01-04
WO2001002222A1 (fr) 2001-01-11

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