DE10104653A1 - Optoelectronic sensor for detecting precipitation on a vehicle screen, has arrangement for adjusting distance between beam incidence and emission surfaces and inner screen surface on beam guiding body or mounting socket - Google Patents
Optoelectronic sensor for detecting precipitation on a vehicle screen, has arrangement for adjusting distance between beam incidence and emission surfaces and inner screen surface on beam guiding body or mounting socketInfo
- Publication number
- DE10104653A1 DE10104653A1 DE2001104653 DE10104653A DE10104653A1 DE 10104653 A1 DE10104653 A1 DE 10104653A1 DE 2001104653 DE2001104653 DE 2001104653 DE 10104653 A DE10104653 A DE 10104653A DE 10104653 A1 DE10104653 A1 DE 10104653A1
- Authority
- DE
- Germany
- Prior art keywords
- radiation
- optoelectronic sensor
- sensor device
- transmitter
- disc
- 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.)
- Granted
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
- B60S1/0874—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 characterized by the position of the sensor on the windshield
- B60S1/0888—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 characterized by the position of the sensor on the windshield characterized by the attachment of the elements in a unit
-
- 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
- B60S1/0874—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 characterized by the position of the sensor on the windshield
- B60S1/0881—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 characterized by the position of the sensor on the windshield characterized by the attachment means on the windshield
Abstract
Description
Die Erfindung betrifft eine optoelektronische Sensoreinrichtung zur Erfassung der Benetzung einer transparenten Kraftfahrzeug-Scheibe mit Niederschlag, mit einem Strahlensender, einem Strahlenempfänger, sowie einem der Innenfläche der Scheibe zugeordneten, einerseits eine dem vom Strahlensender ausgehenden Senderstrahlenbündel zugeordnete Strahlenaustrittsfläche und andererseits eine dem nach zumindest einer an der Außenfläche der Scheibe stattfindenden Reflexion dem Strahlenempfänger zustrebenden Empfangsstrahlenbündel zugeordnete Strahleneintrittsfläche aufweisenden Strahlenleitkörper.The invention relates to an optoelectronic sensor device for detection the wetting of a transparent motor vehicle window with precipitation, with a radiation transmitter, a radiation receiver, and one of the Assigned inner surface of the disc, on the one hand one of the Beam transmitter associated with outgoing transmitter beams Radiation exit area and on the other hand one according to at least one on the Reflection taking place on the outer surface of the disk to the radiation receiver beam entrance surface assigned to the received beam of rays having radiation guide.
Eine optoelektronische Sensoreinrichtung der betreffenden Art ist durch die DE 197 20 874 A1 bekannt. Bei dieser Sensoreinrichtung sind an der Innenfläche der Scheibe Profilierungen vorhanden, die einerseits parallel zur Strahlenaustrittsfläche des Strahlenleitkörpers ausgerichtete Strahleneinkoppelbereiche und andererseits parallel zur Strahleneintrittsfläche des Strahlenleitkörpers ausgerichtete Strahlenauskoppelbereiche aufweisen, und somit eine direkte optische Ankopplung des Strahlenleitkörpers an die Scheibeninnenseite verzichtbar machen.An optoelectronic sensor device of the type in question is described in DE 197 20 874 A1 known. In this sensor device are on the inner surface the disc profiles available that are parallel to the one hand Aligned radiation exit surface of the radiation guide Radiation coupling areas and on the other hand parallel to the radiation entry surface of the radiation guide have aligned radiation decoupling areas, and thus a direct optical coupling of the radiation guide body to the Make the inside of the pane unnecessary.
Um bei einem Strahlenleitkörper der beschriebenen Art eine optimale Ausnutzung des gesamten Querschnitts des parallelen Strahlenbündels zu erreichen ist stets eine Anpassung desselben an die jeweilige Scheibendicke erforderlich.In order to achieve an optimum with a radiation guide body of the type described Utilization of the entire cross-section of the parallel beam is always an adaptation of the same to the respective slice thickness required.
Der vorliegenden Erfindung liegt deshalb die Aufgabe zugrunde, eine Weiterbildung einer gattungsgemäßen optoelektronischen Sensoreinrichtung zur Verfügung zu stellen, die ohne konstruktive Änderung des Strahlenleitkörpers bei mehreren verschiedenen Scheibendicken eine optimale Ausnutzung des Strahlenbündelquerschnitts ermöglicht.The present invention is therefore based on the object Further development of a generic optoelectronic sensor device to make available that without constructive change of the Optimal radiation guide body with several different pane thicknesses Utilization of the beam cross-section enables.
Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß an dem Strahlenleitkörper selbst und/oder an einem zu seiner Halterung an der Scheibe vorgesehenen Sockel Mittel zur Einstellung des Abstandes der Strahlenein- und -austrittsflächen von der Innenfläche der Scheibe vorhanden sind.According to the invention this object is achieved in that on the Radiation guide itself and / or on one to its holder on the Disk provided base means for adjusting the distance of the Radiation entry and exit surfaces available from the inner surface of the pane are.
Weitere Ausgestaltungen und zweckmäßige Weiterbildungen der erfindungsgemäßen Vorrichtung sowie des zugehörigen Verfahrens sind in den zusätzlichen Unteransprüchen angegeben und gehen auch aus der nachfolgenden Beschreibung des in der Zeichnung dargestellten Ausführungsbeispiels hervor.Further refinements and practical developments of The inventive device and the associated method are in specified in the additional subclaims and also go from the following description of the shown in the drawing Embodiment emerges.
Dabei zeigen:Show:
Fig. 1 eine schematische Schnittdarstellung einer optoelektronischen Sensoreinrichtung zur Verdeutlichung der geometrischen Verhältnisse Fig. 1 is a schematic sectional view of an optoelectronic sensor device to illustrate the geometric relationships
Fig. 2 einen Teilbereich der Darstellung aus Fig. 1, wobei ein Haltesockel zur Einstellung des Abstandes des Strahlenleitkörpers von der Scheibeninnenfläche vorhanden ist FIG. 2 shows a partial area of the illustration from FIG. 1, a holding base for adjusting the distance of the radiation guide body from the inner surface of the pane being present
Fig. 3 wie Fig. 2 mit einer alternativen Ausführungsform des Haltesockels mit unterschiedlichen Einschubhöhen Fig. 3 as in FIG. 2 with an alternative embodiment of the retaining socket with different shelf heights
Fig. 4 eine schematische Schnittdarstellung einer optoelektronischen Sensoreinrichtung mit einem einstückig mit einer Rillenplatte ausgeführten Haltesockel Fig. 4 is a schematic sectional view of an optoelectronic sensor device with a holding base made in one piece with a grooved plate
Fig. 5 eine schematische Schnittdarstellung einer optoelektronischen Sensoreinrichtung mit einer alternativen Ausführungsform des Strahlenleitkörpers Fig. 5 is a schematic sectional view of an optoelectronic sensor device with an alternative embodiment of the beam guide
Wie aus Fig. 1 zu sehen ist, umfaßt die optoelektronische Sensoreinrichtung einen Strahlenleitkörper 6, der der Innenseite 1' einer Kraftfahrzeug-Scheibe 1 in einem Abstand a zugeordnet ist. Mit dem Strahlenleitkörper 6 an seiner von der Scheibe 1 abgewandten Seite verbunden ist eine elektrische Leiterplatte 9, auf der ein Strahlensender 2 sowie ein Strahlenempfänger 3 angeordnet sind, die als SMD-Bauteile ausgeführt sind. Ein von dem Strahlensender 2 ausgehendes divergierendes Bündel elektromagnetischer Strahlung wird beim Eintritt in den Strahlenleitkörper 6 durch eine linsenförmige Kontur parallelisiert und verläßt dann den Strahlenleitkörper 6 wieder durch die Strahlenaustrittsfläche 4. An der Innenfläche 1' der Scheibe 1 ist mittels einer optisch transparenten Klebeschicht 10 eine senkrecht zur Darstellungsebene verlaufende Profilierung 7' aufweisende transparente Platte 7 optisch leitend angekoppelt. Durch parallel zu der Strahlenaustrittsfläche 4 verlaufende Strahleneinkoppelbereiche dieser Profilierung 7' tritt das Strahlenbündel in die Scheibe 1 ein und gelangt zur Außenfläche 1" derselben, wo es totalreflektiert wird. Das Strahlenbündel tritt dann durch Strahlenauskoppelbereiche der Profilierung 7' wieder aus der Scheibe 1 aus und durch die parallel zu diesen verlaufende Strahleneintrittsfläche 5 wieder in den Strahlenleitkörper 6 ein, wo es durch eine linsenförmige Kontur auf den Strahlenempfänger 3 fokussiert wird. Wie aus der Darstellung ersichtlich ist, ist eine optimale Ausnutzung des Querschnitts des Strahlenbündels nur dann gegeben, wenn die Mittelsenkrechten der Strahleneintritts- und -austrittsflächen 5 und 4 sich genau an der Außenseite 1" der Scheibe 1 schneiden. Dies ist genau dann der Fall, wenn der Abstand der Mittelpunkte der Strahleneintritts- und - austrittsflächen 5 und 4 von der Scheibenaußenseite 1" der Hälfte ihres gegenseitigen Abstandes entspricht. Da der gegenseitige Abstand der Strahleneintritts- und -austrittsflächen 5 und 4 des Strahlenleitkörpers 6 jedoch festliegt, ist diese Bedingung bei unterschiedlichen Scheibendicken nur durch eine angepaßte Einstellung des Abstandes des Strahlenleitkörpers 6 zur Innenfläche 1' der Scheibe 1 zu realisieren. Zu diesem Zweck wird der Strahlenleitkörper 6 an der Scheibe 1 durch einen - in Fig. 1 nicht dargestellten - Sockel 8 gehalten.As can be seen from FIG. 1, the optoelectronic sensor device comprises a radiation guide body 6 which is assigned to the inside 1 'of a motor vehicle window 1 at a distance a. An electrical circuit board 9 is connected to the radiation guide body 6 on its side facing away from the pane 1 , on which a radiation transmitter 2 and a radiation receiver 3 are arranged, which are designed as SMD components. A diverging bundle of electromagnetic radiation emanating from the radiation transmitter 2 is parallelized by a lens-shaped contour when it enters the radiation guide body 6 and then leaves the radiation guide body 6 again through the radiation exit surface 4 . On the inner surface 1 'of the pane 1 , a transparent plate 7 ' having a profile 7 'running perpendicular to the plane of the representation is optically conductively coupled by means of an optically transparent adhesive layer 10 . The beam bundle enters the pane 1 and reaches the outer surface 1 ″ thereof, where it is totally reflected, through beam coupling areas of this profiling 7 ′ running parallel to the beam exit area 4. The beam bundle then emerges from the pane 1 through beam coupling areas of the profiling 7 ′ and through the beam entrance surface 5 running parallel to these, again into the radiation guide body 6 , where it is focused by a lenticular contour on the radiation receiver 3. As can be seen from the illustration, the cross-section of the beam bundle can only be optimally used if the perpendicular bisector the radiation entry and exit surfaces 5 and 4 intersect exactly on the outside 1 "of the pane 1 . This is exactly the case when the distance between the center points of the radiation entry and exit surfaces 5 and 4 from the outside of the pane 1 "corresponds to half of their mutual distance. However, since the mutual distance between the radiation entry and exit surfaces 5 and 4 of the radiation guide body 6 this condition can be achieved with different pane thicknesses only by adjusting the distance of the beam guide body 6 from the inner surface 1 'of the pane 1. For this purpose, the beam guide body 6 is attached to the pane 1 by a base (not shown in FIG. 1) 8 held.
In Fig. 2 und 3 sind verschiedene Ausführungsformen für einen solchen Sockel 8 dargestellt, wobei in beiden Fällen ein in einer Richtung senkrecht zur Darstellungsebene erfolgendes seitliches Einschieben des Strahlenleitkörpers 6 vorgesehen ist. Bei der Ausführungsform nach Fig. 2 sind für unterschiedliche Scheibendicken d bzw. d' spezielle Sockel mit jeweils angepasster Einschubhöhe a bzw. a' für den Strahlenleitkörper 6 vorgesehen, während in Fig. 3 ein Sockel 8 mit zwei unterschiedlichen Einschubhöhen a bzw. a' zur Verwendung bei zwei verschiedenen Scheibendicken d bzw. d' dargestellt ist. In FIGS. 2 and 3 different embodiments are illustrated for such a base 8, wherein in both cases in a direction perpendicular to the plane of success forming lateral insertion of the beam control element 6 is provided. In the embodiment according to FIG. 2, special bases with respectively adjusted insertion heights a and a 'are provided for the radiation guide body 6 for different pane thicknesses d and d', while in FIG. 3 a base 8 with two different insertion heights a and a 'is provided. for use with two different slice thicknesses d and d 'is shown.
Fig. 4 zeigt eine Alternative für den Haltesockel 8, wobei dieser einstückig mit der die Profilierung 7' aufweisenden transparenten Platte 7 ausgeführt ist. Durch diese Maßnahme ist eine zwangsweise Parallelausrichtung der Strahleneintritts- und -austrittsflächen 5 und 4 des Strahlenleitkörpers 6 zu den Strahlenein- und -auskoppelbereichen der Profilierung 7' bewirkt, so daß eine fehlerhafte Ausrichtung dieser Flächen zueinander vermieden ist. Fig. 4 shows an alternative for the support base 8 , which is made in one piece with the profiling 7 'having the transparent plate 7 . This measure results in a compulsory parallel alignment of the radiation entry and exit surfaces 5 and 4 of the beam guide body 6 with the beam entry and exit areas of the profiling 7 ', so that incorrect alignment of these surfaces with one another is avoided.
In Fig. 5 ist ein weiteres Ausführungsbeispiel mit einer anderen Ausrichtung der einerseits parallelisierenden und andererseits fokussierenden linsenförmigen Konturen des Strahlenleitkörpers 6 sowie der diesen jeweils zugeordneten Strahleneintritts- und -austrittsflächen 5 und 4 dargestellt. Die Strahlenbündel treten hierbei nicht wie bei den bisher dargestellten Ausführungen senkrecht durch die Strahleneintritts- und -austrittsflächen 5 und 4 hindurch sondern werden beim Durchtritt durch diese Grenzflächen gebrochen. Dies bewirkt zwar einen geringfügig höheren Verlust an Intensität durch eine Verringerung des transmittierten Anteils der Strahlung, was jedoch durch die Möglichkeit, einen Anteil der Abstrahlkeule des Strahlensenders 2 mit höherer Intensität zu nutzen, mehr als ausgeglichen wird. Zusätzlich bietet diese Konfiguration durch den geringeren notwendigen Abstand zwischen Strahlensender 2 und Strahlenempfänger 3 die Möglichkeit, kleiner zu bauen. FIG. 5 shows a further exemplary embodiment with a different alignment of the lens-shaped contours of the beam guide body 6, which on the one hand parallelize and on the other hand focus, and the beam entry and exit surfaces 5 and 4 respectively assigned to them. The beams of rays do not pass perpendicularly through the beam entry and exit faces 5 and 4 as in the previously described designs, but are broken when they pass through these interfaces. Although this causes a slightly higher loss of intensity by reducing the transmitted portion of the radiation, this is more than compensated for by the possibility of using a portion of the radiation lobe of the radiation transmitter 2 with higher intensity. In addition, this configuration offers the possibility to build smaller due to the smaller necessary distance between radiation transmitter 2 and radiation receiver 3 .
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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DE2001104653 DE10104653B4 (en) | 2001-02-02 | 2001-02-02 | Optoelectronic sensor device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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DE2001104653 DE10104653B4 (en) | 2001-02-02 | 2001-02-02 | Optoelectronic sensor device |
Publications (2)
Publication Number | Publication Date |
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DE10104653A1 true DE10104653A1 (en) | 2002-08-22 |
DE10104653B4 DE10104653B4 (en) | 2006-11-30 |
Family
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DE2001104653 Expired - Fee Related DE10104653B4 (en) | 2001-02-02 | 2001-02-02 | Optoelectronic sensor device |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005018379A1 (en) * | 2005-04-21 | 2006-10-26 | Leopold Kostal Gmbh & Co. Kg | Optoelectronic sensor device, for detecting wetting of transparent motor vehicle panel, has construction element between coupling element and circuit board with holding elements for holding and positioning second circuit board near screen |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007055497B4 (en) * | 2006-11-23 | 2016-07-21 | Leopold Kostal Gmbh & Co. Kg | Optical sensor for a motor vehicle |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19720874A1 (en) * | 1997-05-17 | 1998-11-19 | Kostal Leopold Gmbh & Co Kg | Opto-electronic sensor arrangement to detect fogging on windscreen of motor vehicle |
US5898183A (en) * | 1997-10-16 | 1999-04-27 | Libbey-Owens-Ford Co. | Compact moisture sensor with efficient high obliquity optics |
DE4017063C2 (en) * | 1990-05-26 | 1999-10-28 | Bosch Gmbh Robert | Device for optically detecting foreign bodies or a coating on the surface of an optically transparent pane |
-
2001
- 2001-02-02 DE DE2001104653 patent/DE10104653B4/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4017063C2 (en) * | 1990-05-26 | 1999-10-28 | Bosch Gmbh Robert | Device for optically detecting foreign bodies or a coating on the surface of an optically transparent pane |
DE19720874A1 (en) * | 1997-05-17 | 1998-11-19 | Kostal Leopold Gmbh & Co Kg | Opto-electronic sensor arrangement to detect fogging on windscreen of motor vehicle |
US5898183A (en) * | 1997-10-16 | 1999-04-27 | Libbey-Owens-Ford Co. | Compact moisture sensor with efficient high obliquity optics |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005018379A1 (en) * | 2005-04-21 | 2006-10-26 | Leopold Kostal Gmbh & Co. Kg | Optoelectronic sensor device, for detecting wetting of transparent motor vehicle panel, has construction element between coupling element and circuit board with holding elements for holding and positioning second circuit board near screen |
EP1724568A2 (en) | 2005-04-21 | 2006-11-22 | Leopold Kostal GmbH & Co. KG | Optoelectronic sensor device |
US7297932B2 (en) | 2005-04-21 | 2007-11-20 | Leopold Kostal Gmbh & Co. Kg | Vehicle optoelectronic precipitation sensor with adjustable lens holder |
Also Published As
Publication number | Publication date |
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DE10104653B4 (en) | 2006-11-30 |
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