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DE19736307A1 - Distance sensor adjustment method - Google Patents

Distance sensor adjustment method

Info

Publication number
DE19736307A1
DE19736307A1 DE19736307A DE19736307A DE19736307A1 DE 19736307 A1 DE19736307 A1 DE 19736307A1 DE 19736307 A DE19736307 A DE 19736307A DE 19736307 A DE19736307 A DE 19736307A DE 19736307 A1 DE19736307 A1 DE 19736307A1
Authority
DE
Germany
Prior art keywords
motor vehicle
target object
distance sensor
determined
adjustment method
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Withdrawn
Application number
DE19736307A
Other languages
German (de)
Inventor
Achim Pruksch
Alain Gaillard
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DE19707590A external-priority patent/DE19707590C2/en
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to DE19736307A priority Critical patent/DE19736307A1/en
Publication of DE19736307A1 publication Critical patent/DE19736307A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/40Means for monitoring or calibrating
    • G01S7/4004Means for monitoring or calibrating of parts of a radar system
    • G01S7/4026Antenna boresight
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/88Radar or analogous systems specially adapted for specific applications
    • G01S13/93Radar or analogous systems specially adapted for specific applications for anti-collision purposes
    • G01S13/931Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
    • G01S2013/9327Sensor installation details
    • G01S2013/93271Sensor installation details in the front of the vehicles
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/40Means for monitoring or calibrating
    • G01S7/4052Means for monitoring or calibrating by simulation of echoes
    • G01S7/4082Means for monitoring or calibrating by simulation of echoes using externally generated reference signals, e.g. via remote reflector or transponder
    • G01S7/4086Means for monitoring or calibrating by simulation of echoes using externally generated reference signals, e.g. via remote reflector or transponder in a calibrating environment, e.g. anechoic chamber

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

The method involves first positioning the vehicle in front of the target object with low accuracy, then measuring the vehicle position with respect to the target object with greater accuracy. The angle between the normal direction to the target object and the selected reference axis or reference line is then measured using the accurate position

Description

Die vorliegende Patentanmeldung ist eine Zusatzanmeldung zu der nicht vorveröffentlichten deutschen Patentanmeldung DE 197 07 590.8-35.The present patent application is an additional application to the unpublished German patent application DE 197 07 590.8-35.

Inhalt der HauptanmeldungContent of the main application

In der DE 197 07 590.8-35 werden ein Verfahren und eine Vor­ richtung zur Justierung eines Entfernungssensors, insbeson­ dere eines Abstandsradars an einem Kraftfahrzeug beschrie­ ben. Wesentlicher Gedanke dieser Beschreibung ist, ein Ziel­ objekt, welches als Referenzziel für die verwendeten Wellen des Entfernungssensors geeignet ist, in einer bekannten Position gegenüber dem Entfernungssensor zu positionieren. Zur Bestimmung des Ausmaßes und der Richtung einer gege­ benenfalls notwendigen Justierung wird der Entfernungssensor in Betrieb genommen und es werden Meß- oder Datenwerte des Entfernungssensors anhand wenigstens eines vorgegebenen Auswertekriteriums ausgewertet. Eine bevorzugte Ausgestal­ tung des Verfahrens ergibt sich, wenn der zu justierende Entfernungssensor die Fähigkeit besitzt, die Richtung oder Winkellage eines detektierten Zielobjektes zu bestimmen. In diesem Fall wird als Auswertekriterium vorteilhafterweise ein Vergleich zwischen der bekannten Position des Ziel­ objektes und der vom Entfernungssensor bestimmten Winkellage des Zielobjektes durchgeführt. Die Richtung, in die der Entfernungssensor gegebenenfalls justiert werden muß, kann dann aus einer Differenz zwischen der vom Entfernungssensor bestimmten und der bekannten Position des Zielobjekts bestimmt werden. Zur Durchführung dieses Verfahrens ist es, wie auch bereits in der genannten Anmeldung erwähnt, unbedingt notwendig, daß sich das Kraftfahrzeug, an dem der Entfernungssensor montiert ist, in einer definierten und bekannten Position gegenüber dem Zielobjekt befindet. Dem­ entsprechend ist in der genannten Anmeldung eine Vorrichtung beschrieben, mittels der sich das Kraftfahrzeug und das Zielobjekt in der gewünschten Weise zueinander positionieren lassen.DE 197 07 590.8-35 describes a method and a pre direction for adjusting a distance sensor, in particular described a distance radar on a motor vehicle ben. The essential idea of this description is a goal object, which serves as a reference target for the waves used of the distance sensor is suitable in a known Position in relation to the distance sensor. To determine the extent and direction of a counter If necessary, the distance sensor is adjusted put into operation and there are measured or data values of the Distance sensor based on at least one predetermined Evaluation criterion evaluated. A preferred form The procedure results when the to be adjusted Distance sensor has the ability to take the direction or To determine the angular position of a detected target object. In  this case is advantageously used as an evaluation criterion a comparison between the known position of the target object and the angular position determined by the distance sensor of the target object. The direction in which the Distance sensor may need to be adjusted then from a difference between that from the distance sensor certain and the known position of the target object be determined. To carry out this procedure it is as already mentioned in the aforementioned application, absolutely necessary that the motor vehicle on which the Distance sensor is mounted in a defined and known position relative to the target object. The a device is correspondingly in the said application described by means of which the motor vehicle and the Position the target object in the desired way to let.

Gegenstand der ZusatzanmeldungSubject of the additional application

Die vorliegende Anmeldung ergänzt die Hauptanmeldung dahin­ gehend, daß hiernach das Kraftfahrzeug zunächst mit einer geringeren Positioniergenauigkeit vor dem Zielobjekt posi­ tioniert wird, daß danach die Position des Kraftfahrzeugs bezogen auf das Zielobjekt mit einer Positionsbestimmungs­ einrichtung genauer bestimmt wird und daß anhand der genauer bestimmten Position des Kraftfahrzeugs der Winkel zwischen der Normalenrichtung des Zielobjektes und der gewählten Referenzachse oder Referenzlinie des Kraftfahrzeugs bestimmt wird.The present application supplements the main application going that after that the motor vehicle first with a lower positioning accuracy in front of the target object posi is dation that then the position of the motor vehicle based on the target object with a position determination establishment is determined more precisely and that based on the more precise certain position of the motor vehicle the angle between the normal direction of the target object and the selected one Reference axis or reference line of the motor vehicle is determined becomes.

Im Unterschied zur Hauptanmeldung wird hierbei also die definierte Position zwischen dem Entfernungssensor und dem Zielobjekt nicht durch eine möglichst exakte Positionierung des Kraftfahrzeugs oder des Zielobjektes erreicht, sondern die definierte Position wird hier durch ein exaktes Bestimmen der von dem Kraftfahrzeug mit geringeren Genauig­ keitsanforderungen eingenommenen Position erzielt. Der Aufwand und dementsprechend die Vorrichtung zur exakten Positionierung des Kraftfahrzeugs im Bezug auf das Ziel­ objekt wird hiernach also durch den Aufwand und dement­ sprechend eine Vorrichtung zur Bestimmung der eingenommenen Position des Kraftfahrzeugs ersetzt oder auch ergänzt. Als Positionsbestimmungseinrichtung ist jede Vorrichtung geeig­ net, mittels der die Position des Kraftfahrzeugs hinreichend exakt bestimmbar ist. Eine solche Positionsbestimmungsein­ richtung ist beispielsweise aus einem kurzen Artikel über eine Anlage zur vollautomatischen Betankung von Kraftfahr­ zeugen bekannt, der in der Ausgabe 2/96 der Zeitschrift "Automobil Industrie" auf Seite 100 veröffentlicht ist. Alternativ kann die Bestimmung der exakten Position des Kraftfahrzeugs beispielsweise auch dadurch erfolgen, daß ein Bild des Kraftfahrzeugs mittels einer Bildaufnahmeeinheit, z. B. einer Videokamera aufgenommen wird und anschließend mit bekannten Methoden der Bildverarbeitung, insbesondere der Mustererkennung die Position des Fahrzeugs bestimmt wird.In contrast to the main application, the defined position between the distance sensor and the Target object not by positioning it as precisely as possible of the motor vehicle or the target object reached, but  the defined position is here an exact Determine the accuracy of the motor vehicle with less position taken. Of the Effort and accordingly the device for exact Positioning of the motor vehicle in relation to the target According to this, the object becomes the effort and dementia speaking a device for determining the ingested Position of the motor vehicle replaced or supplemented. As Any device is suitable for determining the position net, by means of which the position of the motor vehicle is sufficient is exactly determinable. Such a position determination direction is, for example, from a short article about a system for fully automatic refueling of motor vehicles testify known in the issue 2/96 of the magazine "Automotive Industry" is published on page 100. Alternatively, the exact position of the Motor vehicle, for example, also take place in that a Image of the motor vehicle using an image acquisition unit, e.g. B. a video camera is recorded and then with known methods of image processing, especially the Pattern recognition determines the position of the vehicle.

Vorteil dieses Ausführungsbeispiels ist, daß mittels der genannten Verfahren bzw. Vorrichtungen die Position des Kraftfahrzeugs sehr exakt bestimmbar ist und aufgrund der sehr exakt bestimmten Position auch die Genauigkeit der Justierung verbessert ist. Ein weiterer Vorteil ist, daß die zwangsläufig durch einen Bediener vorzunehmende exakte Posi­ tionierung des Kraftfahrzeugs durch die automatisiert durch­ führbare Positionsbestimmung ersetzt wird. Dies läßt ange­ sichts von Rationalisierungsaspekten auf längere Sicht eine Zeit- und Kostenersparnis erwarten.Advantage of this embodiment is that by means of mentioned methods or devices the position of Motor vehicle can be determined very precisely and because of very precisely determined position also the accuracy of the Adjustment is improved. Another advantage is that the exact positions to be performed by an operator tionation of the motor vehicle by automated feasible position determination is replaced. This leaves in terms of rationalization aspects in the long run Expect time and cost savings.

Claims (1)

Verfahren zur Justierung der Ausrichtung einer Strahlcharak­ teristik eines Entfernungssensors gemäß dem Patent DE 197 07 590, dadurch gekennzeichnet,
  • - daß das Kraftfahrzeug zunächst mit einer geringeren Positioniergenauigkeit vor dem Zielobjekt positioniert wird,
  • - daß danach die Position des Kraftfahrzeugs bezüglich des Zielobjektes mit einer Positionsbestimmungseinrichtung genauer bestimmt wird und
  • - daß anhand der genauer bestimmten Position des Kraftfahr­ zeugs der Winkel zwischen der Normalenrichtung des Ziel­ objektes und der gewählten Referenzachse oder Referenzlinie des Kraftfahrzeugs bestimmt wird.
Method for adjusting the alignment of a beam characteristic of a distance sensor according to patent DE 197 07 590, characterized in that
  • that the motor vehicle is first positioned in front of the target object with less positioning accuracy,
  • - That the position of the motor vehicle with respect to the target object is then determined more precisely with a position determining device and
  • - That the angle between the normal direction of the target object and the selected reference axis or reference line of the motor vehicle is determined on the basis of the more precisely determined position of the motor vehicle.
DE19736307A 1997-02-26 1997-08-21 Distance sensor adjustment method Withdrawn DE19736307A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19736307A DE19736307A1 (en) 1997-02-26 1997-08-21 Distance sensor adjustment method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19707590A DE19707590C2 (en) 1997-02-26 1997-02-26 Method and device for adjusting the alignment of a beam characteristic of a distance sensor
DE19736307A DE19736307A1 (en) 1997-02-26 1997-08-21 Distance sensor adjustment method

Publications (1)

Publication Number Publication Date
DE19736307A1 true DE19736307A1 (en) 1999-02-25

Family

ID=26034277

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19736307A Withdrawn DE19736307A1 (en) 1997-02-26 1997-08-21 Distance sensor adjustment method

Country Status (1)

Country Link
DE (1) DE19736307A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19934197A1 (en) * 1999-07-21 2001-01-25 Volkswagen Ag Automatic adjuster for sensor mounted on vehicle adjusts sensor to demand alignment direction if difference occurs between actual and demand directions
WO2001057551A1 (en) * 2000-02-02 2001-08-09 Jaguar Cars Limited Automotive radar elevation alignment

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19934197A1 (en) * 1999-07-21 2001-01-25 Volkswagen Ag Automatic adjuster for sensor mounted on vehicle adjusts sensor to demand alignment direction if difference occurs between actual and demand directions
WO2001057551A1 (en) * 2000-02-02 2001-08-09 Jaguar Cars Limited Automotive radar elevation alignment
GB2375671A (en) * 2000-02-02 2002-11-20 Jaguar Cars Automotive radar elevation alignment
GB2375671B (en) * 2000-02-02 2004-03-24 Jaguar Cars Automotive radar elevation alignment
US6778131B2 (en) 2000-02-02 2004-08-17 Jaguar Cars Limited Automotive radar elevation alignment

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