WO2001002222A1 - Device and method for detecting media such as water, condensation, dirt and the like on a vehicle window - Google Patents
Device and method for detecting media such as water, condensation, dirt and the like on a vehicle window Download PDFInfo
- Publication number
- WO2001002222A1 WO2001002222A1 PCT/EP2000/004770 EP0004770W WO0102222A1 WO 2001002222 A1 WO2001002222 A1 WO 2001002222A1 EP 0004770 W EP0004770 W EP 0004770W WO 0102222 A1 WO0102222 A1 WO 0102222A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- signals
- pane
- lens
- lens units
- depth
- Prior art date
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
- 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.
- 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.
- 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 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.
- 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.
- 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.
- 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.
- 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.
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
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00935118A EP1189790A1 (en) | 1999-06-29 | 2000-05-25 | Device and method for detecting media such as water, condensation, dirt and the like on a vehicle window |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19929964.1 | 1999-06-29 | ||
DE1999129964 DE19929964A1 (en) | 1999-06-29 | 1999-06-29 | Device and method for detecting media such as water, fogging, dirt and the like on a window of a vehicle |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001002222A1 true WO2001002222A1 (en) | 2001-01-11 |
Family
ID=7913057
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2000/004770 WO2001002222A1 (en) | 1999-06-29 | 2000-05-25 | Device and method for detecting media such as water, condensation, dirt and the like on a vehicle window |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1189790A1 (en) |
DE (1) | DE19929964A1 (en) |
WO (1) | WO2001002222A1 (en) |
Families Citing this family (8)
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 (en) * | 2001-09-18 | 2003-11-13 | Fkfs Forschungsinstitut Fuer K | Methods and devices for determining the quantitative contamination of surfaces |
DE10150606A1 (en) * | 2001-10-12 | 2003-04-17 | Bayerische Motoren Werke Ag | Detection of misting of a motor vehicle windscreen due to condensation, whereby an conducting disks are combined to form electrodes and arranged around the screen circumference so that their capacitances can be monitored |
DE10233349A1 (en) * | 2002-07-23 | 2004-02-12 | Leopold Kostal Gmbh & Co Kg | Motor vehicle rain sensor has an optical sensor arrangement mounted on a carriage to the rear of the windscreen so that it can be readily mounted and aligned at a distance from the screen |
DE10233348A1 (en) * | 2002-07-23 | 2004-01-29 | Leopold Kostal Gmbh & Co Kg | Sensor device in motor vehicle is provided with fan heater to disperse condensation on windscreen |
EP1496335A3 (en) * | 2003-07-11 | 2005-04-06 | Leuze electronic GmbH + Co KG | Optoelectronic device |
DE102010020537A1 (en) | 2010-05-14 | 2011-11-17 | H&S Robotic Solutions GbR (vertretungsberechtigter Gesellschafter: Bernd-Helge Schäfer, 67661 Kaiserslautern) | Passive water surface detector for use in autonomous system of self-propelled lawn mower moved over area of golf course, has sensor elements connected to data evaluation device and generating image with different polarizations from scene |
US12080080B2 (en) | 2021-07-12 | 2024-09-03 | Toyota Motor Engineering & Manufacturing North America, Inc. | Detection, classification, and prediction of bacteria colony growth in vehicle passenger cabin |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5543923A (en) * | 1992-01-27 | 1996-08-06 | Leopold Kostal Gmbh & Co. Kg | Sensor device |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4401755C2 (en) * | 1994-01-21 | 1997-08-28 | Jenoptik Jena Gmbh | Combined visibility and precipitation measuring device |
EP0718624A3 (en) * | 1994-12-19 | 1997-07-30 | At & T Corp | Method and apparatus for illuminating translucent and semi-transparent material |
DE19505011C2 (en) * | 1995-02-15 | 2003-12-24 | Teves Gmbh Alfred | Arrangement of an optical rain sensor |
DE19631163C2 (en) * | 1996-08-01 | 2000-05-18 | Thomas Huhn | Device for checking and inspecting a vitreous body |
DE19803694C1 (en) * | 1998-01-30 | 1999-04-22 | Kostal Leopold Gmbh & Co Kg | Method of detecting objects on a transparent plate, e.g. a motor vehicle windscreen |
-
1999
- 1999-06-29 DE DE1999129964 patent/DE19929964A1/en not_active Withdrawn
-
2000
- 2000-05-25 WO PCT/EP2000/004770 patent/WO2001002222A1/en not_active Application Discontinuation
- 2000-05-25 EP EP00935118A patent/EP1189790A1/en not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5543923A (en) * | 1992-01-27 | 1996-08-06 | Leopold Kostal Gmbh & Co. Kg | Sensor device |
Also Published As
Publication number | Publication date |
---|---|
EP1189790A1 (en) | 2002-03-27 |
DE19929964A1 (en) | 2001-01-04 |
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