WO2000035725A1 - Verfahren zum detektieren und lokalisieren von auf einer lichtdurchlässigen scheibe befindlichen, diffusreflektierenden belägen sowie vorrichtung - Google Patents
Verfahren zum detektieren und lokalisieren von auf einer lichtdurchlässigen scheibe befindlichen, diffusreflektierenden belägen sowie vorrichtung Download PDFInfo
- Publication number
- WO2000035725A1 WO2000035725A1 PCT/EP1999/009944 EP9909944W WO0035725A1 WO 2000035725 A1 WO2000035725 A1 WO 2000035725A1 EP 9909944 W EP9909944 W EP 9909944W WO 0035725 A1 WO0035725 A1 WO 0035725A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pane
- recording unit
- intensity profiles
- unit
- disc
- Prior art date
Links
Classifications
-
- 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
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/47—Scattering, i.e. diffuse reflection
- G01N21/4738—Diffuse reflection, e.g. also for testing fluids, fibrous materials
-
- 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
- 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
- B60S1/0833—Optical rain sensor
- B60S1/0844—Optical rain sensor including a camera
Definitions
- the invention has a method for detecting the presence and the relative position of diffusely reflecting coatings, e.g. Fogging due to moisture on surfaces of transparent media as well as a device for carrying out the method.
- Such a method can be regarded as a central function of a system for determining the quality of visibility.
- the previously known methods used for this purpose are primarily based on sensors which detect moisture build-up on the surface with the aid of capacitive or resistive active principles and in order to achieve the same fogging behavior as the surface to be monitored must be thermally coupled to it.
- DE 44 28 111 A1 discloses a circuit arrangement for measuring the moisture on a window of a motor vehicle, in which the resistance is arranged between on the window and with it thermal contact electrodes is measured.
- a detection of deposits other than those caused by moisture and the detection of deposits on the surface opposite the sensor cannot be achieved with methods of this previously known type.
- the object of the present invention is to propose a method with which it is possible to detect any diffusely reflecting coatings without contact and to distinguish between those on the sensor-facing surface and those on the sensor-facing surface.
- the object of the present invention is to provide a corresponding device.
- the method-related object is achieved by a method for detecting and localizing diffuse-reflecting coatings located on a translucent pane using a recording unit containing an optical sensor array, which method comprises the method steps described in the first claim.
- An object which is preferably a self-illuminating light source such as e.g. is a light-emitting diode, imaged onto the sensor array by imaging optics forming part of the recording unit, the light radiation necessarily having to be deflected through the pane in order to get from the object to the recording unit.
- Fig. 1 is a schematic representation of a device according to the invention to illustrate the conditions in a dry and clean pane on both sides
- Fig. 2 is a schematic representation of a device according to the invention to illustrate the conditions in the presence of a coating on the - sensor-facing - outside of the pane
- FIG. 3 shows a schematic representation of a device according to the invention to illustrate the conditions when a coating is present on the inside of the pane, which is facing the sensor
- This first portion 2a of the radiation creates a first image 8 of the light source 1 at the location 8 ' in the plane of the sensor array 7 through the imaging optics comprising an aperture 5 and a converging lens 6.
- a second portion 2b of the radiation is refracted on the surface 3 ' and penetrates disc 3.
- a part 2c of this radiation is reflected on the opposite surface 3 ′′ of the pane 3, which is also referred to as the outside of the pane in the following, a part of which 2d is again reflected Refraction at the first surface 3 'reaches the receiving unit 4 and there generates a second image 9 of the light source 1 at the location 9 ' in the plane of the sensor array 7.
- the portion 2d 'of the diffusely backscattered radiation 2c ' which after refraction at the surface 3 ' still reaches the recording unit 4, is no longer able to produce a sharp image of the light source 1 at the location 9 ' , but rather only a washed-out light spot 9a , which is based on the intensity curve at its edges, ie in particular on the basis of the
- the method according to the invention for evaluating the coating state of a pane (3) evaluates the intensity profiles currently determined by the sensor array (7), comparing them with the intensity profiles expected at the known locations (8 ' , 9 ' ), which serve as a reference for the coating-free condition was saved, compared and, based on the deviations from the reference, in particular with regard to changes in the slope, concludes the coating conditions described above.
- a subsequent actuator control can trigger various actions based on the prevailing coating condition on the pane, e.g. influencing the air conditioning system to remove moisture condensation on the inside of the window and / or the wipers to remove moisture on the outside of the window.
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR9917049-3A BR9917049A (pt) | 1998-12-17 | 1999-12-15 | Processo e dispositivo para detectar e localizar camadas de reflexão difusa, presentes em vidro transparente |
EP99966967A EP1144232B1 (de) | 1998-12-17 | 1999-12-15 | Verfahren zum Detektieren und Lokalisieren von auf einer lichtdurchlässigen Scheibe befindlichen diffus reflektierenden Belägen sowie zugehörige Vorrichtung |
JP2000588006A JP2002532697A (ja) | 1998-12-17 | 1999-12-15 | 透明な板上に存在する拡散して反射する被膜を検知しかつ突き止めるための方法ならびに装置 |
DE59913468T DE59913468D1 (de) | 1998-12-17 | 1999-12-15 | Verfahren zum Detektieren und Lokalisieren von auf einer lichtdurchlässigen Scheibe befindlichen diffus reflektierenden Belägen sowie zugehörige Vorrichtung |
AU22837/00A AU2283700A (en) | 1998-12-17 | 1999-12-15 | Method for detecting and localizing diffuse-reflecting coatings situated on a translucent pane |
US09/881,078 US6404490B2 (en) | 1998-12-17 | 2001-06-13 | Method for detecting and localizing diffuse reflecting coatings situated on a translucent pane |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19858316A DE19858316C2 (de) | 1998-12-17 | 1998-12-17 | Verfahren zum Detektieren und Lokalisieren von auf einer lichtdurchlässigen Scheibe befindlichen, diffusreflektierenden Belägen sowie Vorrichtung |
DE19858316.8 | 1998-12-17 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/881,078 Continuation US6404490B2 (en) | 1998-12-17 | 2001-06-13 | Method for detecting and localizing diffuse reflecting coatings situated on a translucent pane |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000035725A1 true WO2000035725A1 (de) | 2000-06-22 |
Family
ID=7891464
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1999/009944 WO2000035725A1 (de) | 1998-12-17 | 1999-12-15 | Verfahren zum detektieren und lokalisieren von auf einer lichtdurchlässigen scheibe befindlichen, diffusreflektierenden belägen sowie vorrichtung |
Country Status (8)
Country | Link |
---|---|
US (1) | US6404490B2 (de) |
EP (1) | EP1144232B1 (de) |
JP (1) | JP2002532697A (de) |
AU (1) | AU2283700A (de) |
BR (1) | BR9917049A (de) |
DE (2) | DE19858316C2 (de) |
ES (1) | ES2264280T3 (de) |
WO (1) | WO2000035725A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2293044A2 (de) | 2009-09-07 | 2011-03-09 | Pepperl + Fuchs GmbH | Vorrichtung und Verfahren zur Detektion von Verunreinigungen |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2810605B1 (fr) * | 2000-06-22 | 2002-09-20 | Valeo Systemes Dessuyage | Equipement de commande automatique de nettoyage d'une surface de plaque presentant des etats de salissure varies, et procede de mise en oeuvre |
DE10139514A1 (de) | 2001-08-10 | 2003-02-20 | Bosch Gmbh Robert | Transmissionsdetektor für einen Fensterkörper, insbesondere die Windschutzscheibe eines Kraftfahrzeuges, sowie Reinigungsvorrichtung für einen Sichtbereich eines Fensterkörpers |
DE10201522A1 (de) * | 2002-01-17 | 2003-07-31 | Bosch Gmbh Robert | Verfahren und Vorrichtung zur Erkennung von Sichtbehinderungen bei Bildsensorsystemen |
US6690460B2 (en) * | 2002-06-27 | 2004-02-10 | Taiwan Semiconductor Manufacturing Co., Ltd. | Real time detection of cracked quartz window |
DE10339696B4 (de) * | 2003-08-28 | 2007-12-27 | Siemens Ag | Vorrichtung zur Erfassung von Objekten auf einer transparenten Wand, insbesondere von Regentropfen auf einer Windschutzscheibe |
DE102004022072B4 (de) * | 2004-05-05 | 2019-02-14 | Leopold Kostal Gmbh & Co. Kg | Prüfvorrichtung für eine optoelektronische Sensoreinrichtung zur Detektion von Feuchtigkeit auf einer Kraftfahrzeugscheibe |
US7718943B2 (en) * | 2004-09-29 | 2010-05-18 | Gentex Corporation | Moisture sensor for optically detecting moisture |
DE102006023180B4 (de) * | 2006-05-17 | 2014-08-07 | Continental Automotive Gmbh | Verfahren und Anordnung zur Ermittlung des Verschmutzungsgrades zumindest eines Glasscheibenabschnitts eines Fahrzeugleuchtenmodul |
DE102010028347A1 (de) * | 2010-04-29 | 2011-11-03 | Robert Bosch Gmbh | Sensoranordnung an einem Kraftfahrzeug |
EP2646802A1 (de) * | 2010-11-30 | 2013-10-09 | Conti Temic Microelectronic GmbH | Detektion von regentropfen auf einer scheibe mittels einer kamera und beleuchtung |
DE102012103873A1 (de) * | 2012-05-03 | 2013-11-21 | Conti Temic Microelectronic Gmbh | Detektion von Regentropfen auf einer Scheibe mittels einer Kamera und Beleuchtung |
US9296361B1 (en) * | 2015-01-15 | 2016-03-29 | GM Global Technology Operations LLC | Window and device wiping system |
US10171029B2 (en) * | 2017-05-12 | 2019-01-01 | Michael Gostein | Soiling measurement device for photovoltaic arrays employing microscopic imaging |
US11092480B2 (en) * | 2018-09-27 | 2021-08-17 | International Business Machines Corporation | Light obstruction sensor |
DE102018126592B4 (de) * | 2018-10-25 | 2022-09-08 | Valeo Schalter Und Sensoren Gmbh | Verfahren zur Erkennung von Durchlässigkeitsstörungen in Bezug auf Licht wenigstens eines Fensters eines Gehäuses einer optischen Detektionsvorrichtung und optische Detektionsvorrichtung |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4867561A (en) * | 1986-08-22 | 1989-09-19 | Nippondenso Co., Ltd. | Apparatus for optically detecting an extraneous matter on a translucent shield |
DE4428111A1 (de) | 1994-08-09 | 1996-02-15 | Vdo Schindling | Schaltungsanordnung zur Messung der Feuchte auf einer Scheibe eines Kraftfahrzeugs |
WO1997029926A1 (de) * | 1996-02-13 | 1997-08-21 | Marquardt Gmbh | Optischer sensor |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2420594A1 (de) * | 1974-04-27 | 1975-11-06 | Bernd Ing Grad Korndoerfer | Vollautomatische scheibenwischersteuerung fuer kraftfahrzeuge |
US4676638A (en) * | 1983-03-31 | 1987-06-30 | Kabushiki Kaisha Tokai Rika Denki Seisakusho | Light-transmissible foreign object sensor |
US4956591A (en) * | 1989-02-28 | 1990-09-11 | Donnelly Corporation | Control for a moisture sensor |
FR2681429B1 (fr) * | 1991-09-13 | 1995-05-24 | Thomson Csf | Procede et dispositif d'inspection du verre. |
US5313072A (en) * | 1993-02-16 | 1994-05-17 | Rockwell International Corporation | Optical detector for windshield wiper control |
US6020704A (en) * | 1997-12-02 | 2000-02-01 | Valeo Electrical Systems, Inc. | Windscreen sensing and wiper control system |
-
1998
- 1998-12-17 DE DE19858316A patent/DE19858316C2/de not_active Expired - Fee Related
-
1999
- 1999-12-15 AU AU22837/00A patent/AU2283700A/en not_active Abandoned
- 1999-12-15 ES ES99966967T patent/ES2264280T3/es not_active Expired - Lifetime
- 1999-12-15 EP EP99966967A patent/EP1144232B1/de not_active Expired - Lifetime
- 1999-12-15 BR BR9917049-3A patent/BR9917049A/pt not_active Application Discontinuation
- 1999-12-15 WO PCT/EP1999/009944 patent/WO2000035725A1/de active IP Right Grant
- 1999-12-15 JP JP2000588006A patent/JP2002532697A/ja active Pending
- 1999-12-15 DE DE59913468T patent/DE59913468D1/de not_active Expired - Lifetime
-
2001
- 2001-06-13 US US09/881,078 patent/US6404490B2/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4867561A (en) * | 1986-08-22 | 1989-09-19 | Nippondenso Co., Ltd. | Apparatus for optically detecting an extraneous matter on a translucent shield |
DE4428111A1 (de) | 1994-08-09 | 1996-02-15 | Vdo Schindling | Schaltungsanordnung zur Messung der Feuchte auf einer Scheibe eines Kraftfahrzeugs |
WO1997029926A1 (de) * | 1996-02-13 | 1997-08-21 | Marquardt Gmbh | Optischer sensor |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2293044A2 (de) | 2009-09-07 | 2011-03-09 | Pepperl + Fuchs GmbH | Vorrichtung und Verfahren zur Detektion von Verunreinigungen |
DE102009040216A1 (de) | 2009-09-07 | 2011-03-10 | Pepperl + Fuchs Gmbh | Vorrichtung und Verfahren zur Detektion von Verunreinigungen |
US8334972B2 (en) | 2009-09-07 | 2012-12-18 | Pepperl & Fuchs Gmbh | Method and device for detecting soiling |
Also Published As
Publication number | Publication date |
---|---|
EP1144232A1 (de) | 2001-10-17 |
DE19858316C2 (de) | 2000-11-30 |
BR9917049A (pt) | 2002-04-02 |
JP2002532697A (ja) | 2002-10-02 |
EP1144232B1 (de) | 2006-05-24 |
DE59913468D1 (de) | 2006-06-29 |
US6404490B2 (en) | 2002-06-11 |
US20010040677A1 (en) | 2001-11-15 |
DE19858316A1 (de) | 2000-06-29 |
AU2283700A (en) | 2000-07-03 |
ES2264280T3 (es) | 2006-12-16 |
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