DE102016009022A1 - Method for detecting wetness on a road - Google Patents
Method for detecting wetness on a road Download PDFInfo
- Publication number
- DE102016009022A1 DE102016009022A1 DE102016009022.7A DE102016009022A DE102016009022A1 DE 102016009022 A1 DE102016009022 A1 DE 102016009022A1 DE 102016009022 A DE102016009022 A DE 102016009022A DE 102016009022 A1 DE102016009022 A1 DE 102016009022A1
- Authority
- DE
- Germany
- Prior art keywords
- vehicle
- road
- road surface
- wetness
- camera
- 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- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000011156 evaluation Methods 0.000 claims abstract description 10
- 230000003287 optical effect Effects 0.000 claims abstract description 6
- 238000001454 recorded image Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
- BUHVIAUBTBOHAG-FOYDDCNASA-N (2r,3r,4s,5r)-2-[6-[[2-(3,5-dimethoxyphenyl)-2-(2-methylphenyl)ethyl]amino]purin-9-yl]-5-(hydroxymethyl)oxolane-3,4-diol Chemical compound COC1=CC(OC)=CC(C(CNC=2C=3N=CN(C=3N=CN=2)[C@H]2[C@@H]([C@H](O)[C@@H](CO)O2)O)C=2C(=CC=CC=2)C)=C1 BUHVIAUBTBOHAG-FOYDDCNASA-N 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
- B60W40/02—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models related to ambient conditions
- B60W40/06—Road conditions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2420/00—Indexing codes relating to the type of sensors based on the principle of their operation
- B60W2420/40—Photo, light or radio wave sensitive means, e.g. infrared sensors
- B60W2420/403—Image sensing, e.g. optical camera
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2554/00—Input parameters relating to objects
- B60W2554/40—Dynamic objects, e.g. animals, windblown objects
- B60W2554/404—Characteristics
- B60W2554/4041—Position
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2554/00—Input parameters relating to objects
- B60W2554/80—Spatial relation or speed relative to objects
- B60W2554/801—Lateral distance
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Mathematical Physics (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Traffic Control Systems (AREA)
Abstract
Die Erfindung betrifft ein Verfahren zur Erkennung von Nässe auf einer Fahrbahn, wobei eine Umgebung eines Fahrzeugs mittels zumindest einer Kamera (2) erfasst wird. Erfindungsgemäß wird ein Nässegrad (N) auf einer Fahrbahnoberfläche zumindest anhand einer Auswertung von in mittels der Kamera (2) erfassten Bildern (B) enthaltenen und von einem dem Fahrzeug vorausfahrenden weiteren Fahrzeug erzeugten optischen Strukturen auf der Fahrbahnoberfläche ermittelt.The invention relates to a method for detecting moisture on a road, wherein an environment of a vehicle is detected by means of at least one camera (2). According to the invention, a degree of wetness (N) is determined on a road surface at least on the basis of an evaluation of optical structures on the road surface contained in images (B) captured by the camera (2) and generated by a further vehicle ahead of the vehicle.
Description
Die Erfindung betrifft ein Verfahren zur Erkennung von Nässe auf einer Fahrbahn gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a method for detecting moisture on a roadway according to the preamble of claim 1.
Aus der
Weiterhin ist aus der
Die
Der Erfindung liegt die Aufgabe zu Grunde, ein gegenüber dem Stand der Technik verbessertes Verfahren zur Erkennung von Nässe auf einer Fahrbahn anzugeben.The invention is based on the object to provide a comparison with the prior art improved method for detecting moisture on a roadway.
Die Aufgabe wird erfindungsgemäß mit einem Verfahren gelöst, welches die im Anspruch 1 angegebenen Merkmale aufweist.The object is achieved by a method having the features specified in claim 1.
Vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche.Advantageous embodiments of the invention are the subject of the dependent claims.
In dem Verfahren zur Erkennung von Nässe auf einer Fahrbahn wird eine Umgebung eines Fahrzeugs mittels zumindest einer Kamera erfasst.In the method for detecting wetness on a roadway, an environment of a vehicle is detected by means of at least one camera.
Erfindungsgemäß wir ein Nässegrad auf einer Fahrbahnoberfläche zumindest anhand einer Auswertung von in mittels der Kamera erfassten Bildern enthaltenen und von einem dem Fahrzeug vorausfahrenden weiteren Fahrzeug erzeugten optischen Strukturen auf der Fahrbahnoberfläche ermittelt.According to the invention, we determine a degree of wetness on a road surface at least on the basis of an evaluation of optical structures on the road surface contained in images captured by the camera and generated by a further vehicle ahead of the vehicle.
Hierdurch ist es möglich, Nässe auf der Fahrbahnoberfläche auch dann zu erkennen, wenn ein herkömmlicher Regensensor keinen Niederschlag erfasst. Eine aufgrund der nassen Fahrbahn gegenüber einer trockenen Fahrbahn verminderte Haftung von Reifen auf der Fahrbahn und daraus folgend ein verlängerter Bremsweg und eine geringere mögliche Kurvengeschwindigkeit können somit stets, beispielsweise bei einem Betrieb von Fahrerassistenzsystemen, berücksichtigt werden. Insbesondere ist es möglich, aufgrund der Bestimmung des Nässegrads der Fahrbahnoberfläche die Haftung der Reifen abgestuft oder stufenlos in Abhängigkeit des Nässegrads zu ermitteln. Somit kann eine Sicherheit beim Betrieb des Fahrzeugs signifikant erhöht werden.This makes it possible to detect wetness on the road surface even when a conventional rain sensor detects no precipitation. A reduced liability of tires on the road surface due to the wet road surface compared to a dry roadway and consequently an extended braking distance and a lower possible cornering speed can thus always be taken into account, for example when operating driver assistance systems. In particular, it is possible, based on the determination of the degree of wetness of the road surface, the adhesion of the tires graded or continuously determined as a function of the degree of wetness. Thus, safety in the operation of the vehicle can be significantly increased.
Ausführungsbeispiele der Erfindung werden im Folgenden anhand einer Zeichnung näher erläutert.Embodiments of the invention will be explained in more detail below with reference to a drawing.
Dabei zeigt:Showing:
In der einzigen
Die Vorrichtung
Aus mittels der Kamera
Mittels eines in der Auswerteeinheit
Da die Intensität und Länge der Reifenspuren von einer auf der Straßenoberfläche befindlichen Wassermenge abhängen, wird mittels der Auswerteeinheit
Dieser Nässegrad N wird zumindest einem Fahrerassistenzsystem
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- 11
- Vorrichtungcontraption
- 22
- Kameracamera
- 33
- Auswerteeinheitevaluation
- 44
- FahrerassistenzsystemDriver assistance system
- BB
- Bildimage
- NN
- Nässegraddegree of wetness
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- DE 102015109271 A1 [0002] DE 102015109271 A1 [0002]
- DE 112010005669 T5 [0003] DE 112010005669 T5 [0003]
- DE 102010063017 A1 [0004] DE 102010063017 A1 [0004]
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102016009022.7A DE102016009022A1 (en) | 2016-07-23 | 2016-07-23 | Method for detecting wetness on a road |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102016009022.7A DE102016009022A1 (en) | 2016-07-23 | 2016-07-23 | Method for detecting wetness on a road |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE102016009022A1 true DE102016009022A1 (en) | 2017-02-02 |
Family
ID=57795683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE102016009022.7A Withdrawn DE102016009022A1 (en) | 2016-07-23 | 2016-07-23 | Method for detecting wetness on a road |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE102016009022A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110239561A (en) * | 2018-03-07 | 2019-09-17 | 奥迪股份公司 | Driving assistance system and method |
| JP2022509379A (en) * | 2018-10-31 | 2022-01-20 | ロベルト・ボッシュ・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング | A method for assisting camera-based surrounding environment recognition of transportation means by using road surface wetness information of a first ultrasonic sensor. |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010063017A1 (en) | 2010-12-14 | 2012-06-14 | Robert Bosch Gmbh | Method in a driver assistance system for detecting wetness on a road |
| DE112010005669T5 (en) | 2010-06-18 | 2013-05-16 | Honda Motor Co., Ltd. | Road surface reflectivity classification system |
| DE102015109271A1 (en) | 2014-06-12 | 2015-12-17 | GM Global Technology Operations LLC (n. d. Gesetzen des Staates Delaware) | Visually-based detection of a wet road surface using a structural analysis |
-
2016
- 2016-07-23 DE DE102016009022.7A patent/DE102016009022A1/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE112010005669T5 (en) | 2010-06-18 | 2013-05-16 | Honda Motor Co., Ltd. | Road surface reflectivity classification system |
| DE102010063017A1 (en) | 2010-12-14 | 2012-06-14 | Robert Bosch Gmbh | Method in a driver assistance system for detecting wetness on a road |
| DE102015109271A1 (en) | 2014-06-12 | 2015-12-17 | GM Global Technology Operations LLC (n. d. Gesetzen des Staates Delaware) | Visually-based detection of a wet road surface using a structural analysis |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110239561A (en) * | 2018-03-07 | 2019-09-17 | 奥迪股份公司 | Driving assistance system and method |
| CN110239561B (en) * | 2018-03-07 | 2022-08-05 | 奥迪股份公司 | Driving assistance system and method |
| JP2022509379A (en) * | 2018-10-31 | 2022-01-20 | ロベルト・ボッシュ・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング | A method for assisting camera-based surrounding environment recognition of transportation means by using road surface wetness information of a first ultrasonic sensor. |
| JP7069425B2 (en) | 2018-10-31 | 2022-05-17 | ロベルト・ボッシュ・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング | A method for assisting camera-based surrounding environment recognition of transportation means by using road surface wetness information of a first ultrasonic sensor. |
| US11580752B2 (en) | 2018-10-31 | 2023-02-14 | Robert Bosch Gmbh | Method for supporting a camera-based environment recognition by a means of transport using road wetness information from a first ultrasonic sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R230 | Request for early publication | ||
| R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |