EP1217686A2 - Device for adjusting the main beam direction of a radar sensor - Google Patents
Device for adjusting the main beam direction of a radar sensor Download PDFInfo
- Publication number
- EP1217686A2 EP1217686A2 EP01122925A EP01122925A EP1217686A2 EP 1217686 A2 EP1217686 A2 EP 1217686A2 EP 01122925 A EP01122925 A EP 01122925A EP 01122925 A EP01122925 A EP 01122925A EP 1217686 A2 EP1217686 A2 EP 1217686A2
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- EP
- European Patent Office
- Prior art keywords
- radar
- dielectric
- dielectric plate
- lens
- plate
- 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.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/32—Adaptation for use in or on road or rail vehicles
- H01Q1/3208—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used
- H01Q1/3233—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used particular used as part of a sensor or in a security system, e.g. for automotive radar, navigation systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/06—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using refracting or diffracting devices, e.g. lens
- H01Q19/062—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using refracting or diffracting devices, e.g. lens for focusing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/12—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical relative movement between primary active elements and secondary devices of antennas or antenna systems
- H01Q3/14—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical relative movement between primary active elements and secondary devices of antennas or antenna systems for varying the relative position of primary active element and a refracting or diffracting device
Definitions
- a device for adjusting the Main beam direction of a radar sensor.
- a radar sensor in vehicles, advantageously in the form of a distance sensor for adaptive Speed control, it is necessary after assembly of the radar sensor on the vehicle, the main beam direction of the Align the radar sensor exactly to the vehicle's longitudinal axis.
- the main beam direction of the sensor By tilting a dielectric plate that is movably attached between the radar source and the radar lens, you can change the main beam direction of the sensor.
- DE 196 42 810 C1 describes a radar system, in particular a motor vehicle radar system known in which for adjustment the main beam direction, the position of the transmitting / receiving elements of the radar system relative to one focusing means, which preferably as Antenna lens is formed, is changeable.
- DE 197 39 298 C1 discloses a device for Attachment of a distance sensor, in particular one Distance radars on a motor vehicle, the Distance sensor in a closed housing is housed, the housing being movable on a Holder is attached and wherein the holder is immovable on the Motor vehicle is attachable.
- the device is thereby characterized in that the housing with at least three L-shaped mutually arranged screws on the holder It can be fastened that the screws are installed the distance sensor can be screwed from the front and that for at least two of the screws one Protection against unscrewing is provided.
- the object of the present invention is a Describe device with which the main beam direction of a radar sensor can be precisely aligned.
- the radar base must be installed after the sensor has been installed Vehicle the sensor main beam direction exactly on the Longitudinal vehicle axis are aligned.
- the adjustment process should be designed so that the alignment can be carried out quickly, easily and permanently. According to the invention, this object is achieved through the features of Main claim solved.
- a dielectric, in particular plane-parallel, plate between the radar source and positioned the dielectric lens.
- the senor is simple Way, because there are large tolerance values, which can arise due to the simple manufacture, compensate by means of the device according to the invention to let.
- the dielectric, in particular plane-parallel, plate is movably mounted and with respect to the optical axis of the dielectric lens is tiltable. This makes directional corrections both in the azimuthal direction as well as in the elevation direction, each based on the optical axis of the dielectric Lens, possible.
- the location of the dielectric plate by at least one electric drive is adjustable, as this makes an automatic Self-adjustment of the sensor both at standstill and is realizable while driving.
- the surfaces of the dielectric plate are coated, in particular by the Provide so-called matching grooves on the surfaces or by applying a film of material.
- This Matching grooves are depressions on the surface of the dielectric body, especially in the form of parallel Grooves, their dimensions and spacing of the radar wavelength are adjusted.
- a film of material to the surfaces become. It is necessary that the intended Material film in terms of its thickness and its relative Dielectric constant is chosen so that the losses through the total transition from the plate over the material film in the air has minimal losses. Through these measures can the reflections that occur when the electromagnetic wave from the air into the lens and inside further course from the lens into the air, be minimized.
- the radar source, the dielectric lens and the dielectric plate directly or are indirectly connected to a common housing.
- the dielectric plate can be positioned relative to the housing, in particular pivotable, is.
- the radiation source (1) is shown, which consists of at least one antenna element (2).
- a dielectric lens (7) is also positioned in the main radiation direction of the antenna elements (4).
- the dielectric lens (7) is positioned in such a way that the optical axis (3) of the dielectric lens (7) coincides approximately with the main emission direction of the radiation source (4), as a rule this is the center beam for symmetrical beams.
- the distance of the dielectric lens (7) from the radiation source (1) corresponds approximately to the focal length of the lens (7).
- the lower limit beam (5) and the upper limit beam (6) limit the space that is mainly fulfilled by the radar beam.
- the plane-parallel, dielectric plate (8) is also fastened between the radiation source (1) and the dielectric lens (7).
- the center plane (15) of the dielectric, plane-parallel plate (8) is positioned such that it forms a right angle with the optical axis of the dielectric lens (3) or the main beam direction of the radar source (4). This position is also referred to as the neutral position since the radar beam is not influenced in its direction of propagation.
- the plane-parallel, dielectric plate (8) is movably supported by means of three ball joints (9, 10, 11) which are attached to the plate in a spatially distributed manner. This mounting allows the plate to be tilted in any direction within the mechanical limits.
- electric drives (12, 13) are attached to two (9, 10) of the three ball joints, which in turn are attached to the housing (14), which enables the plate to move in two dimensions.
- the third ball joint (11) is connected directly to the housing (14).
- FIG. 2 shows the same device, also in Side view, with tilted dielectric plate (8).
- the radiation source (1) can be seen here consists of at least one antenna element (2).
- the dielectric lens (7) which in a Distance, which is about the focal length of the lens, is fixed.
- the optical axis (3) of the dielectric lens (7) is again aligned so that it is identical to the The main radiation direction of the radiation source (4).
- the Central plane (17) of the plane-parallel, dielectric plate (8) is opposite in this case by the angle alpha (18) the center plane of the dielectric plate (15) in neutral Position tilted.
- dielectric plate (8) are all Rays of the radar beam (4,5,6) in their Beam path influenced.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Radar Systems Or Details Thereof (AREA)
- Aerials With Secondary Devices (AREA)
Abstract
Description
Vorgeschlagen wird eine Vorrichtung zur Justage der Hauptstrahlrichtung eines Radarsensors. Insbesondere beim Einsatz eines Radarsensors in Fahrzeugen, vorteilhafterweise in Form eines Abstandssensors zur adaptiven Geschwindigkeitsregelung, ist es notwendig, nach der Montage des Radarsensors am Fahrzeug, die Hauptstrahlrichtung des Radarsensors exakt auf die Fahrzeuglängsachse auszurichten. Durch das Verkippen einer dielektrischen Platte, die zwischen Radarquelle und Radarlinse bewegbar angebracht ist, kann man die Hauptstrahlrichtung des Sensors verändern.A device is proposed for adjusting the Main beam direction of a radar sensor. Especially when Use of a radar sensor in vehicles, advantageously in the form of a distance sensor for adaptive Speed control, it is necessary after assembly of the radar sensor on the vehicle, the main beam direction of the Align the radar sensor exactly to the vehicle's longitudinal axis. By tilting a dielectric plate that is movably attached between the radar source and the radar lens, you can change the main beam direction of the sensor.
Aus der DE 196 42 810 C1 ist ein Radarsystem, insbesondere ein Kraftfahrzeugradarsystem bekannt, bei dem zur Justierung der Hauptstrahlrichtung die Position der Sende-/Empfangselemente des Radarsystems relativ zu einem fokussierenden Mittel, welches vorzugsweise als Antennenlinse ausgebildet ist, veränderbar ist.DE 196 42 810 C1 describes a radar system, in particular a motor vehicle radar system known in which for adjustment the main beam direction, the position of the transmitting / receiving elements of the radar system relative to one focusing means, which preferably as Antenna lens is formed, is changeable.
Die DE 197 39 298 C1 offenbart eine Vorrichtung zur Befestigung eines Entfernungssensors, insbesondere eines Abstandsradars an einem Kraftfahrzeug, wobei der Entfernungssensor in einem geschlossenen Gehäuse untergebracht ist, wobei das Gehäuse bewegbar an einem Halter befestigt ist und wobei der Halter unbeweglich an dem Kraftfahrzeug befestigbar ist. Die Vorrichtung ist dadurch gekennzeichnet, dass das Gehäuse mit wenigstens drei L-förmig zueinander angeordneten Schrauben an dem Halter befestigbar ist, dass die Schrauben im eingebauten Zustand des Entfernungssensors von dessen Vorderseite her schraubbar sind und dass für wenigstens zwei der Schrauben eine Ausdrehsicherung vorgesehen ist.DE 197 39 298 C1 discloses a device for Attachment of a distance sensor, in particular one Distance radars on a motor vehicle, the Distance sensor in a closed housing is housed, the housing being movable on a Holder is attached and wherein the holder is immovable on the Motor vehicle is attachable. The device is thereby characterized in that the housing with at least three L-shaped mutually arranged screws on the holder It can be fastened that the screws are installed the distance sensor can be screwed from the front and that for at least two of the screws one Protection against unscrewing is provided.
Die Aufgabe der vorliegenden Erfindung ist es, eine Vorrichtung zu beschreiben, mit der die Hauptstrahlrichtung eines Radarsensors exakt ausgerichtet werden kann. Im Anwendungsfall eines Abstandssensors für Fahrzeuge auf Radarbasis muss nach erfolgter Montage des Sensors am Fahrzeug die Sensorhauptstrahlrichtung exakt auf die Fahrzeuglängsachse ausgerichtet werden. Der Justagevorgang sollte dabei so gestaltet sein, dass die Ausrichtung schnell, einfach und dauerhaft ausgeführt werden kann. Erfindungsgemäß wird diese Aufgabe durch die Merkmale des Hauptanspruchs gelöst.The object of the present invention is a Describe device with which the main beam direction of a radar sensor can be precisely aligned. in the Use case of a distance sensor for vehicles The radar base must be installed after the sensor has been installed Vehicle the sensor main beam direction exactly on the Longitudinal vehicle axis are aligned. The adjustment process should be designed so that the alignment can be carried out quickly, easily and permanently. According to the invention, this object is achieved through the features of Main claim solved.
Vorteilhafte Weiterbildungen und Ausgestaltungen ergeben sich aus den Unteransprüchen. Weitere Merkmale, Anwendungsmöglichkeiten und Vorteile der Erfindung ergeben sich aus der nachfolgenden Beschreibung von Ausführungsbeispielen der Erfindung, die in den Figuren der Zeichnung dargestellt sind. Dabei bilden alle beschriebenen oder dargestellten Merkmale für sich oder in beliebiger Kombination den Gegenstand der Erfindung, unabhängig von ihrer Zusammenfassung in den Patentansprüchen oder deren Rückbeziehung sowie unabhängig von ihrer Formulierung bzw. Darstellung in der Beschreibung bzw. in der Zeichnung.Advantageous further developments and refinements result itself from the subclaims. Other features, Possible applications and advantages of the invention result from the following description of Embodiments of the invention shown in the figures of the Drawing are shown. Thereby form all described or illustrated features for themselves or in any Combination the subject of the invention, regardless of their summary in the claims or their Relationship and regardless of their wording or Representation in the description or in the drawing.
Erfindungsgemäß wird zur Justage eine dielektrische, insbesondere planparallele, Platte zwischen der Radarquelle und der dielektrischen Linse positioniert. Durch Positionieren der Platte, insbesondere durch deren Schwenken, lässt sich die Abstrahlrichtung des Sensors sehr exakt einstellen, wodurch eine einfache und kostengünstige Feinjustage nach erfolgter Montage möglich ist.According to the invention, a dielectric, in particular plane-parallel, plate between the radar source and positioned the dielectric lens. By Position the plate, especially by its Swivel, the radiation direction of the sensor can be very set exactly, making it simple and inexpensive Fine adjustment after assembly is possible.
Weiterhin vorteilhaft ist es, dass der Sensor auf einfache Weise gefertigt werden kann, da sich große Toleranzwerte, die bedingt durch die einfache Fertigung entstehen können, mittels der erfindungsgemäßen Vorrichtung kompensieren lassen.It is also advantageous that the sensor is simple Way, because there are large tolerance values, which can arise due to the simple manufacture, compensate by means of the device according to the invention to let.
Es ist weiterhin vorteilhaft, dass die dielektrische, insbesondere planparallele, Platte beweglich gelagert ist und in Bezug auf die optische Achse der dielektrischen Linse verkippbar ist. Hierdurch sind Richtungskorrekturen sowohl in azimutaler Richtung wie auch in Elevationsrichtung, jeweils ausgehend von der optischen Achse der dielektrischen Linse, möglich.It is also advantageous that the dielectric, in particular plane-parallel, plate is movably mounted and with respect to the optical axis of the dielectric lens is tiltable. This makes directional corrections both in the azimuthal direction as well as in the elevation direction, each based on the optical axis of the dielectric Lens, possible.
Vorteilhaft ist es außerdem, dass die Lage der dielektrischen Platte durch mindestens einen Elektroantrieb verstellbar ist, da hierdurch eine automatische Selbstjustage des Sensors sowohl im Stillstand wie auch während der Fahrt realisierbar ist.It is also advantageous that the location of the dielectric plate by at least one electric drive is adjustable, as this makes an automatic Self-adjustment of the sensor both at standstill and is realizable while driving.
Weiterhin vorteilhaft ist es, dass die Oberflächen der dielektrischen Platte vergütet sind, insbesondere durch das Vorsehen sogenannter Matching Grooves auf den Oberflächen oder durch das Aufbringen eines Materialfilms. Diese Matching Grooves sind Vertiefungen an der Oberfläche des dielektrischen Körpers, insbesondere in Form paralleler Rillen, deren Abmessungen und Abstände der Radarwellenlänge angepaßt sind. Alternativ zu diesen Matchin Grooves kann auch ein Materialfilm auf den Oberflächen aufgebracht werden. Hierbei ist es notwendig, dass der vorgesehene Materialfilm bezüglich seiner Dicke und seiner relativen Dielektrizitätszahl so gewählt wird, dass die Verluste durch den Gesamtübergang von der Platte über den Materialfilm in die Luft minimale Verluste aufweist. Durch diese Maßnahmen können die Reflexionen, die beim Übergang der elektromagnetischen Welle von der Luft in die Linse und im weiteren Verlauf von der Linse in die Luft entstehen, minimiert werden.It is also advantageous that the surfaces of the dielectric plate are coated, in particular by the Provide so-called matching grooves on the surfaces or by applying a film of material. This Matching grooves are depressions on the surface of the dielectric body, especially in the form of parallel Grooves, their dimensions and spacing of the radar wavelength are adjusted. As an alternative to these matchin grooves also applied a film of material to the surfaces become. It is necessary that the intended Material film in terms of its thickness and its relative Dielectric constant is chosen so that the losses through the total transition from the plate over the material film in the air has minimal losses. Through these measures can the reflections that occur when the electromagnetic wave from the air into the lens and inside further course from the lens into the air, be minimized.
Vorteilhaft ist weiterhin, dass die Radarquelle, die dielektrische Linse und die dielektrische Platte direkt oder indirekt mit einem gemeinsamen Gehäuse verbunden sind.It is also advantageous that the radar source, the dielectric lens and the dielectric plate directly or are indirectly connected to a common housing.
Weiterhin ist vorteilhaft, dass die dielektrische Platte relativ zum Gehäuse positionierbar, insbesondere schwenkbar, ist.It is also advantageous that the dielectric plate can be positioned relative to the housing, in particular pivotable, is.
Nachfolgend wird ein Ausführungsbeispiel der Erfindung anhand einer Zeichnung erläutert. Es zeigen
- Figur 1
- eine Seitenansicht der beanspruchten Vorrichtung mit neutraler Stellung der dielektrischen Platte sowie
- Figur 2
- ebenfalls eine Seitenansicht der beanspruchten Vorrichtung mit gekippter, dielektrischer Platte zur Korrektur der Abstrahlungsrichtung.
- Figure 1
- a side view of the claimed device with neutral position of the dielectric plate and
- Figure 2
- also a side view of the claimed device with a tilted dielectric plate for correcting the direction of radiation.
In Figur 1 ist die Strahlungsquelle (1) dargestellt, die aus
mindestens einem Antennenelement (2) besteht. Weiterhin ist
in Hauptabstrahlrichtung der Antennenelemente (4) eine
dielektrische Linse (7) positioniert. Die dielektrische
Linse (7) ist dabei derart positioniert, dass die optische
Achse (3) der dielektrischen Linse (7) mit der
Hauptabstrahlrichtung der Strahlungsquelle (4), in der Regel
ist dies bei symmetrischen Strahlenbündeln der
Mittelpunktstrahl, in etwa übereinstimmen. Der Abstand der
dielektrischen Linse (7) von der Strahlungsquelle (1)
entspricht dabei in etwa der Brennweite der Linse (7). Der
untere Grenzstrahl (5) sowie der obere Grenzstrahl (6)
begrenzen dabei den Raum, der durch das Radarstrahlenbündel
überwiegend erfüllt wird. Zwischen der Strahlungsquelle (1)
und der dielektrischen Linse (7) ist des Weiteren die
planparallele, dielektrische Platte (8) befestigt. Die
Mittelebene (15) der dielektrischen, planparallelen Platte
(8) ist dabei so positioniert, dass sie mit der optischen
Achse der dielektrischen Linse (3) bzw. der
Hauptstrahlrichtung der Radarquelle (4) einen rechten Winkel
bildet. Diese Stellung wird auch als neutrale Stellung
bezeichnet, da das Radarstrahlenbündel in seiner
Ausbreitungsrichtung nicht beinflusst wird. Die
planparallele, dielektrische Platte (8) ist mittels drei
Kugelgelenken (9,10,11), die räumlich verteilt an der Platte
befestigt sind, beweglich gelagert. Durch diese Lagerung
kann die Platte in jede Richtung innerhalb der mechanischen
Grenzen beliebig verkippt werden.
Weiterhin sind an zwei (9,10) der drei Kugelgelenke
Elektroantriebe (12,13) befestigt, die wiederum am Gehäuse
(14) angebracht sind, wodurch eine zweidimensionale Bewegung
der Platte ermöglicht wird. Das dritte Kugelgelenk (11), ist
direkt mit dem Gehäuse (14) verbunden. In Figure 1, the radiation source (1) is shown, which consists of at least one antenna element (2). A dielectric lens (7) is also positioned in the main radiation direction of the antenna elements (4). The dielectric lens (7) is positioned in such a way that the optical axis (3) of the dielectric lens (7) coincides approximately with the main emission direction of the radiation source (4), as a rule this is the center beam for symmetrical beams. The distance of the dielectric lens (7) from the radiation source (1) corresponds approximately to the focal length of the lens (7). The lower limit beam (5) and the upper limit beam (6) limit the space that is mainly fulfilled by the radar beam. The plane-parallel, dielectric plate (8) is also fastened between the radiation source (1) and the dielectric lens (7). The center plane (15) of the dielectric, plane-parallel plate (8) is positioned such that it forms a right angle with the optical axis of the dielectric lens (3) or the main beam direction of the radar source (4). This position is also referred to as the neutral position since the radar beam is not influenced in its direction of propagation. The plane-parallel, dielectric plate (8) is movably supported by means of three ball joints (9, 10, 11) which are attached to the plate in a spatially distributed manner. This mounting allows the plate to be tilted in any direction within the mechanical limits.
Furthermore, electric drives (12, 13) are attached to two (9, 10) of the three ball joints, which in turn are attached to the housing (14), which enables the plate to move in two dimensions. The third ball joint (11) is connected directly to the housing (14).
Durch das Verstellen der elektrischen Antriebe (12,13) ist es möglich, die planparallele, dielektrische Platte (8) so zu positionieren, dass der Strahlengang des Radarbündels sowohl in Azimutalrichtung wie auch in Elevationsrichtung justiert werden kann. Es ist jedoch auch denkbar, dass die Elektroantriebe (12,13) entfallen und statt dessen manuelle Justiereinrichtungen, vorzugsweise Justierschrauben, aufweisen, die per Hand zu verstellen sind.By adjusting the electric drives (12, 13) it is possible to the plane-parallel, dielectric plate (8) to position that the beam path of the radar beam both in the azimuthal direction and in the elevation direction can be adjusted. However, it is also conceivable that the Electric drives (12, 13) are omitted and manual ones instead Adjusting devices, preferably adjusting screws, have to be adjusted by hand.
Figur 2 zeigt die gleiche Vorrichtung, ebenfalls in Seitenansicht, mit gekippter, dielektrischer Platte (8). Es ist hier wieder die Strahlungsquelle (1) zu erkennen, die aus mindestens einem Antennenelement (2) besteht. Ebenfalls unverändert ist die dielektrische Linse (7), die in einer Entfernung, die etwa der Brennweite der Linse entspricht, fixiert ist. Die optische Achse (3) der dielektrischen Linse (7) ist wiederum so ausgerichtet, dass sie identisch mit der Hauptstrahlungsrichtung der Strahlungsquelle (4) ist. Die Mittelebene (17) der planparallelen, dielektrischen Platte (8) ist in diesem Fall um den Winkel alpha (18) gegenüber der Mittelebene der dielektrischen Platte (15) in neutraler Stellung verkippt. Durch diese Verkippung der planparallelen, dielektrischen Platte (8) werden sämtliche Strahlen des Radarstrahlbündels (4,5,6) in ihrem Strahlengang beeinflusst. Durch die Brechung der Strahlen (4,5,6) beim Eintritt in die dielektrische Platte sowie deren wiederholte Brechung beim Austritt aus der Platte beschreibt das Radarstrahlenbündel in etwa eine Parallelverschiebung senkrecht zur optischen Achse (3). Durch diese näherungsweise Parallelverschiebung trifft das Radarstrahlbündel (4,5,6) nicht mehr zentrisch auf die dielektrische Linse (7). Da eine plankonvexe Linse bekanntermaßen Strahlen, die am Rande der Linse einfallen, stärker bricht als Strahlen im mittleren Teil der Linse, verändert sich durch die beschriebene Parallelverschiebung des Strahlenbündels der weitere Strahlenverlauf. So wird das aus der dielektrischen Linse (7) ausfallende Strahlenbündel so gebrochen, dass der Mittelpunktstrahl (4) die optische Achse der Linse (3) im Winkel omega (19) kreuzt. Zum Verkippen der planparallelen, dielektrischen Platte (8) sind auch hier zwei Elektroantriebe (12,13) vorgesehen, die über jeweils eine Antriebsmechanik (9,10) die Platte verkippt. Auch in diesem Fall kann der Elektroantrieb entfallen und durch Justageschrauben ersetzt werden. Hierbei wäre eine Verstellung per Hand erforderlich, wodurch eine Justage während des Betriebs des Fahrzeugs nicht mehr möglich wäre. Diese Ausführungsform stellt eine besonders kostengünstige Vorrichtung dar, die insbesondere dann zu wählen ist, wenn die Justage der Hauptstrahlrichtung nur einmalig, insbesondere nach der Montage durchgeführt werden soll. Der Vorteil der Verstellung mittels elektrischer Antriebe ist, dass der Sensor aus den gewonnenen Daten seine Fehlstellung selbst erkennnen kann. Dies geschieht beispielsweise aufgrund der Reflexionen an der Straßenoberfläche oder aufgrund erkannter, stehender Objekte im Sensorsichtbereich. Diese Ausführungsform ermöglicht eine kontinuierliche Selbstjustage in bestimmten Zeitabständen, so dass der Fahrer das Fahrzeugs nicht gezwungen ist, hierzu eine Werkstatt aufzusuchen.Figure 2 shows the same device, also in Side view, with tilted dielectric plate (8). It again the radiation source (1) can be seen here consists of at least one antenna element (2). Likewise unchanged is the dielectric lens (7), which in a Distance, which is about the focal length of the lens, is fixed. The optical axis (3) of the dielectric lens (7) is again aligned so that it is identical to the The main radiation direction of the radiation source (4). The Central plane (17) of the plane-parallel, dielectric plate (8) is opposite in this case by the angle alpha (18) the center plane of the dielectric plate (15) in neutral Position tilted. By tilting the plane-parallel, dielectric plate (8) are all Rays of the radar beam (4,5,6) in their Beam path influenced. By refraction of the rays (4,5,6) when entering the dielectric plate as well their repeated refraction when exiting the plate describes the radar beam in about one Parallel shift perpendicular to the optical axis (3). This is due to this approximately parallel shift Radar beam (4,5,6) no longer centered on the dielectric lens (7). Because a plano-convex lens known to be rays that are incident on the edge of the lens, breaks more than rays in the middle part of the lens, changes due to the parallel shift described the further beam path of the beam. That's how it is rays emerging from the dielectric lens (7) so broken that the center beam (4) the optical The axis of the lens (3) crosses at an angle omega (19). To the Tilt the plane-parallel, dielectric plate (8) here, too, two electric drives (12, 13) are provided, which one drive mechanism (9, 10) each tilts the plate. In this case too, the electric drive can be omitted and be replaced by adjustment screws. Here would be one Manual adjustment required, which makes adjustment would no longer be possible during the operation of the vehicle. This embodiment represents a particularly economical one Device that is to be selected in particular if the adjustment of the main beam direction only once, especially after installation. The The advantage of adjustment using electric drives is that the sensor detects its misalignment from the data obtained can recognize yourself. This happens, for example due to the reflections on the road surface or due to detected, standing objects in the sensor field of view. This embodiment enables continuous Self-adjustment at certain intervals, so that the The driver of the vehicle is not forced to do so Visit a workshop.
Claims (9)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10065024 | 2000-12-23 | ||
| DE2000165024 DE10065024A1 (en) | 2000-12-23 | 2000-12-23 | Device for adjusting the main beam direction of a radar sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1217686A2 true EP1217686A2 (en) | 2002-06-26 |
| EP1217686A3 EP1217686A3 (en) | 2004-01-02 |
Family
ID=7668987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01122925A Withdrawn EP1217686A3 (en) | 2000-12-23 | 2001-09-25 | Device for adjusting the main beam direction of a radar sensor |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP1217686A3 (en) |
| DE (1) | DE10065024A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009009227A1 (en) | 2008-02-21 | 2009-10-01 | Adc Automotive Distance Control Systems Gmbh | Method for automatic alignment of radiation sensor in motor vehicle, involves compensating pitch angle variation of vehicle by automatic alignment |
| EP2469649A1 (en) * | 2010-12-27 | 2012-06-27 | Thales | Radiofrequency antenna with multiple radiating elements for transmission of a wave with variable propagation direction |
| CN111007513A (en) * | 2018-10-04 | 2020-04-14 | 安波福技术有限公司 | Object sensor including pitch compensation |
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|---|---|---|---|---|
| US3005983A (en) * | 1947-10-30 | 1961-10-24 | Charles H Chandler | Focussing and deflection of centimeter waves |
| US3226721A (en) * | 1948-03-26 | 1965-12-28 | Sperry Rand Corp | Scanning antenna utilizing four rotary prisms to produce rectilinear scan and fifth rotary prism to produce conical scan |
| US3887924A (en) * | 1950-06-30 | 1975-06-03 | Rca Corp | Scanning antenna |
| EP0179687A1 (en) * | 1984-09-21 | 1986-04-30 | Thomson-Csf | Scanning microwave antenna using rotating prisms |
| DE19642810C1 (en) * | 1996-10-17 | 1998-04-02 | Bosch Gmbh Robert | Directional radar system for anticollision and vehicle speed measurement |
| DE19650863C1 (en) * | 1996-12-07 | 1998-04-16 | Bosch Gmbh Robert | Method of detecting distance sensor vertical adjustment error |
| DE19739298C1 (en) * | 1997-09-08 | 1998-11-12 | Bosch Gmbh Robert | Appliance for mounting distance sensor on motor vehicle esp. for radar equipment measuring distance between vehicles |
-
2000
- 2000-12-23 DE DE2000165024 patent/DE10065024A1/en not_active Withdrawn
-
2001
- 2001-09-25 EP EP01122925A patent/EP1217686A3/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3005983A (en) * | 1947-10-30 | 1961-10-24 | Charles H Chandler | Focussing and deflection of centimeter waves |
| US3226721A (en) * | 1948-03-26 | 1965-12-28 | Sperry Rand Corp | Scanning antenna utilizing four rotary prisms to produce rectilinear scan and fifth rotary prism to produce conical scan |
| US3887924A (en) * | 1950-06-30 | 1975-06-03 | Rca Corp | Scanning antenna |
| EP0179687A1 (en) * | 1984-09-21 | 1986-04-30 | Thomson-Csf | Scanning microwave antenna using rotating prisms |
| DE19642810C1 (en) * | 1996-10-17 | 1998-04-02 | Bosch Gmbh Robert | Directional radar system for anticollision and vehicle speed measurement |
| DE19650863C1 (en) * | 1996-12-07 | 1998-04-16 | Bosch Gmbh Robert | Method of detecting distance sensor vertical adjustment error |
| DE19739298C1 (en) * | 1997-09-08 | 1998-11-12 | Bosch Gmbh Robert | Appliance for mounting distance sensor on motor vehicle esp. for radar equipment measuring distance between vehicles |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009009227A1 (en) | 2008-02-21 | 2009-10-01 | Adc Automotive Distance Control Systems Gmbh | Method for automatic alignment of radiation sensor in motor vehicle, involves compensating pitch angle variation of vehicle by automatic alignment |
| DE102009009227B4 (en) | 2008-02-21 | 2021-10-07 | Adc Automotive Distance Control Systems Gmbh | Method for the automatic alignment of a radiation sensor in a vehicle |
| EP2469649A1 (en) * | 2010-12-27 | 2012-06-27 | Thales | Radiofrequency antenna with multiple radiating elements for transmission of a wave with variable propagation direction |
| FR2969833A1 (en) * | 2010-12-27 | 2012-06-29 | Thales Sa | RADIO FREQUENCY ANTENNA HAVING MULTIPLE RADIATION ELEMENTS FOR TRANSMITTING A VARIABLE PROPAGATION-DIRECTING WAVE |
| CN111007513A (en) * | 2018-10-04 | 2020-04-14 | 安波福技术有限公司 | Object sensor including pitch compensation |
| CN111007513B (en) * | 2018-10-04 | 2024-03-15 | 安波福技术有限公司 | Object sensor including pitch compensation |
Also Published As
| Publication number | Publication date |
|---|---|
| DE10065024A1 (en) | 2002-07-04 |
| EP1217686A3 (en) | 2004-01-02 |
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