EP3938222A1 - Detection system and method for ascertaining an articulation angle between two sub-vehicles of a vehicle combination, and vehicle combination - Google Patents
Detection system and method for ascertaining an articulation angle between two sub-vehicles of a vehicle combination, and vehicle combinationInfo
- Publication number
- EP3938222A1 EP3938222A1 EP20712853.9A EP20712853A EP3938222A1 EP 3938222 A1 EP3938222 A1 EP 3938222A1 EP 20712853 A EP20712853 A EP 20712853A EP 3938222 A1 EP3938222 A1 EP 3938222A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- vehicle
- sub
- angle
- detection
- detection system
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60D—VEHICLE CONNECTIONS
- B60D1/00—Traction couplings; Hitches; Draw-gear; Towing devices
- B60D1/58—Auxiliary devices
- B60D1/62—Auxiliary devices involving supply lines, electric circuits, or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60D—VEHICLE CONNECTIONS
- B60D1/00—Traction couplings; Hitches; Draw-gear; Towing devices
- B60D1/24—Traction couplings; Hitches; Draw-gear; Towing devices characterised by arrangements for particular functions
- B60D1/30—Traction couplings; Hitches; Draw-gear; Towing devices characterised by arrangements for particular functions for sway control, e.g. stabilising or anti-fishtail devices; Sway alarm means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D15/00—Steering not otherwise provided for
- B62D15/02—Steering position indicators ; Steering position determination; Steering aids
Definitions
- the invention relates to a detection system and a method for determining a kink angle between two sub-vehicles of a vehicle combination which are movably connected to one another.
- the invention further relates to a vehicle combination consisting of at least two part vehicles together with the detection system according to the invention, in particular for carrying out the method according to the invention.
- a kink angle between the individual sub-vehicles is known. Based on this articulation angle, for example, automated maneuvering of the vehicle combination can take place in depots. Furthermore, an automatic coupling and docking of the trailer to the towing vehicle can take place with the aid of the articulation angle and an estimate of the position or orientation of the trailer.
- a virtual top view of the vehicle combination can be created within the scope of driver assistance as a function of the determined articulation angle, which can be used in particular in an all-round view of the vehicle combination.
- the kink angle is determined, for example, by odometry, ie an estimate of the position of the first sub-vehicle relative to the second sub-vehicle as a function of the detected driving dynamics of the vehicle combination, e.g. steering angle, path, etc.
- odometry ie an estimate of the position of the first sub-vehicle relative to the second sub-vehicle as a function of the detected driving dynamics of the vehicle combination, e.g. steering angle, path, etc.
- odometry cannot determine a sufficiently precise kink angle without having to resort to additional sensors.
- the trailer can be detected using a detection device and tracked using special algorithms, with contour detection or edge detection taking place, with the aid of which, for example, the front of the trailer can be tracked over time.
- contour detection or edge detection it can be concluded how the trailer is moving relative to the towing vehicle, from which the articulation angle can be estimated directly.
- a detection system is described, for example, in EP 3 180 769 A1.
- DE 10 2008 029 612 A1 also describes a detection system in which an angle between a wheel of the trailer and the camera system is determined and the articulation angle is deduced from the vehicle dimensions.
- DE10 201 1 104 256 A1 image features are evaluated and, in the case of drawbar trailers, determined from them for a kink angle.
- the object of the invention is therefore to provide a detection system and a method with which a kink angle can be determined precisely and easily almost independently of the ambient conditions. Another task is to specify a vehicle combination with such a detection system.
- a detection system for determining an articulation angle between a sub-vehicle and an articulated other sub-vehicle of a vehicle combination that is articulated therewith, which has a projection device that is designed to map a given pattern onto a sub-area on the other sub-vehicle to create a Sample image on the other part of the vehicle, the sample image being able to be extracted from detection signals by a processing unit and the processing unit being able to determine the articulation angle based on the extracted sample image.
- the sample image is recorded by a detection device of the detection system.
- the detection device is arranged on one of the sub-vehicles of the vehicle combination and a detection area of the detection device is at least partially aligned with the sub-area of the other sub-vehicle articulated to one part of the vehicle, so that detection signals are generated and output by the detection device that characterize the sub-area including the sample image on the other sub-vehicle.
- a processing unit of the detection system is also designed to record the detection signals and to determine the articulation angle between the two sub-vehicles on the basis of the detection signals from the extracted model image. Extracting the sample image is to be understood here as meaning that the processing unit analyzes the detection signals and filters the sample image out of the captured environment. This can take place by means of a pattern recognition which, for example, also has the predefined pattern.
- Sub-vehicles are understood to be a towing vehicle or a trailer, for example a semi-trailer, drawbar trailer, etc., whereby the articulation angle between the towing vehicle and the trailer or between two trailers can be determined with the detection system depending on the orientation of the detection device and the projection device.
- the components of the detection system can either be located on only one of the sub-vehicles, for example on the towing vehicle or on one of the trailers, or distributed over several sub-vehicles.
- the pattern is then projected onto the corresponding other sub-vehicle and recorded by the detection device.
- the pattern can be freely selected, as can the arrangement of the acquisition system. Accordingly, only one area (partial area) on the respective partial vehicle is necessary to generate the sample image, for example on a front of the trailer, to which the detection device is also to be aligned. This can be determined during the assembly of the components of the acquisition system, and subsequent adjustment is also easily possible. It is not necessary to process the sub-area or to apply markers to the respective sub-vehicle, since the projection can preferably take place independently of the surface of the sub-area.
- the position of the pattern or the shape of the pattern can, if necessary, also be easily adapted to the existing surface.
- the ambient lighting also has little influence on the imaging and detection of the pattern image, it also being possible to select a position for the projection that is only slightly influenced by the ambient lighting.
- the processing unit is designed to determine geometric information from the extracted pattern image and to deduce the articulation angle between one sub-vehicle and the other sub-vehicle as a function of the geometric information. Accordingly, it is advantageously assumed that the pattern image also changes when the kink angle changes in accordance with simple geometric rules, since a projection plane in which the pattern is imaged on the partial area shifts or pivots relative to the projection device. These changes in the pattern image can be recorded and conclusions can be drawn about the bending angle in a simple manner.
- the processing unit is designed to determine a line angle and / or a line spacing between horizontally extending lines and / or vertically extending lines of the pattern image, the geometric information being a geometric shape of the pattern image characterize and the geometric shape of the pattern image changes depending on the kink angle.
- the line angle or a line spacing can be determined from the pattern image as geometric information which characterizes the pattern image itself and from which the kink angle follows.
- the pattern image can therefore be designed very simply, for example as a kind of grid of horizontally and vertically extending lines that cross at a right angle in a certain initial state, for example when driving straight ahead.
- the initial state can be a driving state in which the articulation angle is known, so that a known articulation angle can be assigned to a specific pattern image or a line angle or a line spacing. Since the line spacing or the line angle of vertically or horizontally running lines can be determined very well and they also change depending on the kink angle in a known geometric dependency, this geometric information is a very ge precise and easily understandable indicator from which an unknown kink angle can be derived easily and reliably. In principle, however, patterns with curved lines or diagonal lines or other geometrical shapes are also possible, from which geometrical information can be derived that characterize the respective geometrical shape and that also change comprehensibly depending on the kink angle.
- the processing unit is designed to determine a line angle change and / or a line distance change from the determined line angle and / or the determined line spacing, starting from an initial state with a known kink angle, for example when driving straight ahead and from this to infer the currently existing articulation angle via a change in articulation angle.
- a geometric change in the pattern image can be detected in a simple and reliable manner.
- the change in the bending angle can then advantageously be deduced from the geometric change, since these two changes are always related to one another.
- the basis for this is formed by simple geometric considerations with knowledge of the vehicle dimensions, in particular the position of the sub-area or the projection plane relative to the pivot point between the sub-vehicles.
- the processing unit is designed to compare the extracted pattern image with stored reference patterns, with each stored reference pattern for the respective vehicle combination or for the respective partial vehicle Is assigned articulation angle, and in the event of a match with a reference pattern to infer the respective associated articulation angle.
- the articulation angle can also be determined by a simple actual / target comparison of patterns, with the reference pattern for this purpose having to be determined in advance for the respective vehicle combination or the respective sub-vehicle.
- the detection system is arranged on a towing vehicle and / or on at least one trailer as part of the vehicle combination to determine the articulation angle between the towing vehicle and the articulated trailer or between two articulated trailers of the vehicle.
- Team it can preferably be provided that the projection device is arranged on the towing vehicle or the at least one trailer as the one sub-vehicle and the sub-area and the projection plane are on the trailer or the towing vehicle as another sub-vehicle.
- the pattern image can be which are mapped onto the towing vehicle or on one of the trailers and the projection device can be arranged on the corresponding other sub-vehicle so that a change in the position of the projection plane relative to the projection device results when the articulation angle changes.
- the recording system can thus be used very flexibly and variably and can be easily retrofitted.
- the projection device can project the predefined pattern in the visible or non-visible spectrum onto the partial area.
- the pattern image can be formed on the sub-vehicle by targeted selection of the radiation, the detection device then being designed accordingly to detect this radiation.
- Infrared radiation for example, can be selected as radiation in the non-visible spectrum, which has the advantage that projection and detection can also take place almost independently of the ambient conditions.
- a projection and detection is possible even when the surface is soiled and almost independently of the surface properties of the sub-area.
- the sub-area on the other sub-vehicle is free of the means used to determine the articulation angle without the predefined pattern being mapped by the projection device. Accordingly, no patterns, barcodes or the like that are applied to the partial area, for example printed or otherwise attached, are provided as such means, which are recorded by the detection device and from which a kink angle can be determined in the processing device.
- the determination of the articulation angle with the detection system according to the invention is therefore advantageously based only on the analysis and processing of the pattern projected by the projection device.
- the vehicle combination according to the invention has, in the manner described, a detection system according to the invention, which is particularly designed to carry out the method according to the invention.
- FIG. 1 shows a plan view of a vehicle combination made up of two sub-vehicles movably connected to one another;
- Fig. 2 is a perspective view of a section of the driving tool combination according to FIG. 1;
- FIG. 4 shows a flow chart of the method according to the invention.
- a multi-part vehicle combination 1 is shown from a Switzerlandfahr tool Z as the first sub-vehicle 2.1 and a towed trailer A (Sat telauflieger) as the second sub-vehicle 2.2, the vehicle combination 1 is exemplified as a tractor-trailer.
- the described invention can also be provided on a vehicle combination 1 with a drawbar trailer or a central axle trailer as a towed trailer A (not shown).
- the trailer A is hinged to the towing vehicle Z via a king pin 3 as shown in FIG. 1, so that the trailer A can rotate about an axis D of rotation through the king pin 3 relative to the towing vehicle Z, for example when cornering.
- a certain articulation angle K is established between the towing vehicle Z and the trailer A.
- the vehicle combination 1 has a detection system 4, the detection system 4 according to this exemplary embodiment having a projection device 5, a detection device 6 and a processing unit 7.
- the projection unit 5 is designed to project or map a predetermined pattern M onto a sub-area 8a of a front surface 8 of the trailer A and thus to generate a pattern image MA in a certain projection plane 8b on the trailer A.
- the projection plane 8b is determined by the spatial position of the front surface 8 of the trailer A be.
- the projection device 5 is firmly connected to the towing vehicle Z and is oriented in the direction of the trailer A, the front surface 8 of which points towards the towing vehicle Z accordingly.
- the detection device 6 is also arranged on the towing vehicle Z, with a detection area 6a of the detection device 6 being aligned with the front surface 8 of the trailer A and at least with the partial area 8a. The detection device 6 can thus detect at least the pattern image MA shown on the front surface 8 of the trailer A in the projection plane 8b.
- the detection device 6 is designed for this purpose, for example, as an image-recording sensor, in particular a camera, with which the pattern image MA on the front surface 8 of the trailer A can be recorded.
- the detection device 6 generates detection signals S as a function of a captured environment U, in particular the captured pattern image MA, and outputs these to the processing unit 7.
- the processing unit 7 is designed to process the detected surroundings U on the basis of the sensor signals S. Since the detection area 6a of the detection device 6 is also aligned with the sub-area 8a, the processing unit 7 can extract the pattern image MA from the sensor signals S and analyze it.
- the projection device 5 can be designed to map the predetermined pattern M in the visible spectrum onto the sub-area 8a in the projection plane 8b or else in the non-visible spectrum, for example in the infrared range.
- the projection device 5 is designed, for example, as a laser for the visible spectrum and as a light-emitting diode for the non-visible spectrum, in particular in the infrared range.
- the detection device 6 is matched in a corresponding manner to the type of radiation used by the projection device 5, so that the pattern image MA can be captured.
- An image in the non-visible spectrum has the advantage that the front surface 8 of the trailer A can be optically designed almost as desired, since the detection device 6 does not “perceive” this during the processing and analysis of the pattern image MA.
- the extracted pattern image MA is different when driving straight ahead FG of the vehicle combination 1 from the extracted pattern image MA when cornering FK at a certain bending angle K, since the projection plane 8b on the front surface 8 of the trailer A when twisted of the trailer A with respect to the towing vehicle Z relative to the projection device 5 is displaced or pivoted. Accordingly, there are also changes in the projected or extracted pattern image MA, which are dependent on the existing articulation angle K between the train vehicle Z and the trailer A.
- horizontally running lines LH in the pattern image MA which run parallel to one another when driving straight ahead FG (see FIG. 3a), are tilted against one another at a certain line angle LW when cornering FK (see FIG. 3b), so that they no longer run parallel to one another.
- vertically running lines LV of the pattern image MA which run parallel to one another when driving straight ahead FG, approach one another when cornering FK, so that a line spacing LA between the vertically running lines LV changes as a function of the kink angle K. With vertical lines (not shown), these effects combine accordingly.
- a calibration should be carried out beforehand or it should be ensured that the image plane of the pattern image MA is parallel to the front surface 8 of the trailer A and the specified pattern M is formed with the specified line spacings LA and line angles LW.
- the bending angle K can then be determined at any point in time from the changed line spacings LA or line angles LW via the geometric considerations.
- conclusions can be drawn as to the unknown articulation angle K or a change in articulation angle dK. This follows directly from a geometric model that is stored in the processing unit 7 in a corresponding manner.
- the derivation of the bending angle change dK is possible in a simple manner, since the position of the projection plane 8b on the front surface 8 relative to the detection device 6 and the projection device 5 for the first time point t1 is exactly known. This follows from the knowledge of the articulation angle K and the vehicle dimensions for this first point in time t1.
- the model image MA recorded at the first point in time t1 with the respective line spacings LA and / or line angles LW can then be assigned to this driving state.
- the known vehicle dimensions and the then recorded pattern image MA or the then existing line spacings LA and / or line angles LW can result in the unknown articulation angle K or the articulation angle change dK simple geometric Considerations that are taken into account in the geometric model are closed.
- the first point in time t1 does not necessarily have to be present when FG is traveling straight ahead. Rather, any point in time at which a kink angle K is known or an association between the pattern image MA and kink angle K can take place is possible.
- the determination of the bending angle change dK or the unknown bending angle K then always takes place in the incremental determination starting from the pattern image MA assigned to this initial state or the associated line spacings LA and / or line angles LW.
- reference patterns MR may be stored in the processing unit 7 for each bending angle K and for the pattern image MA to be compared with these reference patterns MR at an unknown bending angle K. If they match a reference pattern MR, the correspondingly assigned kink angle K can be given out.
- the reference patterns MR are then to be precisely determined or calibrated in advance for the respective vehicle combination 1 in order to be able to access them during operation.
- the analysis of the pattern image MA using the geometric model or the reference pattern MR is to be adapted accordingly when using a drawbar trailer or a central axle trailer, the position of the projection plane 8b on the respective trailer A from the vehicle dimensions for the respective articulation angle K being known for this or can be estimated.
- the projection device 5 can also be omitted. Accordingly, the predetermined pattern M is not projected onto the front of the surface 8 of the trailer A in the partial area 8a. Rather will the predetermined pattern M is applied directly to the front surface 8 of the trailer A in any manner in the partial area 8a.
- the applied pattern M is then virtually identical to the pattern image MA and is output to the processing unit 7 via the detection signals S when the detection area 6a of the detection device 6 is aligned accordingly.
- the line spacings LA or the line angles LW between the lines LH, LV of the pattern M or the pattern image MA change, so that the changes in the pattern image MA to the kink angle K can be concluded. This is also done in this exemplary embodiment by a geometric model stored on the processing unit 7 or by a comparison with reference patterns MR.
- the advantage of the embodiments with the projection device 5 is, however, that they can be easily retrofitted, since the trailer A itself can remain unchanged and only the corresponding components 5, 6, 7 of the detection system 4 on the towing vehicle Z have to be retrofitted. In this way, even when the trailer A is exchanged, the articulation angle can still be determined without the respective trailer A having to be retrofitted or converted accordingly.
- the definition of the partial area 8a into which the pattern image MA is projected can be adapted for each trailer A in a simple and targeted manner to the setting of the detection area 6a and vice versa by the projection device 5 or the detection device 6 be mounted accordingly. As a result, regardless of the selected trailer A, it can be ensured that the sample image MA can actually be projected and recorded.
- the pattern image MA can be changed simply by exchanging the predefined pattern M, with an adaptation of the geometric model to this newly predefined pattern M not being required if the vehicle dimensions do not change.
- the geometric the change in the pattern image MA as a function of the kink angle K remains the same.
- the upper surface quality of the front surface 8 of the trailer A can be made almost as desired. Even in the case of contamination, a projection with subsequent detection can still take place, so that the articulation angle K can be determined almost independently of ambient conditions.
- both the projection device 5 and the detection device 6 and the processing unit 7 on the towing vehicle Z are arranged.
- the method for determining the articulation angle K can be carried out, for example, as follows: An initialization takes place in an initial step StO, for example when the vehicle combination 1 is started or when it is determined that a trailer A is attached. As a result, the predefined pattern M is projected by the projection device 5 in the visible or non-visible spectrum OS, ON in the sub-area 8a onto the front surface 8 of the trailer A or the corresponding sub-vehicle 2.i.
- a line spacing change dLA and / or a line angle change dLW is determined from the pattern image MA (incremental approach), which results from the pivoting projection plane 8b compared to the initial state in the first step St1 when the trailer A relative to the towing vehicle Z or the sub-vehicles 2.i rotate against each other about the axis of rotation D.
- this line spacing change dLA and / or line angle change dLW is used to deduce the currently available, as yet unknown kink angle K or a kink angle change dK based on the known kink angle K in the first step St1 .
- the pattern image MA determined in the second step St2 can be compared with stored reference patterns MR and at Correspondence with a reference pattern MR of the respectively assigned kink angle K are output.
- the pattern image MA determined in the second step St2 can also be used to determine the bending angle K directly via the line spacing LA and / or the line angle LW using the geometric considerations (absolute approach).
- Steps St2 and St3 take place continuously in previously defined time steps when the vehicle combination 1 is traveling.
- the determined articulation angle K can then be output to other vehicle systems for further use.
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Image Analysis (AREA)
- Image Processing (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019106275.6A DE102019106275A1 (en) | 2019-03-12 | 2019-03-12 | Acquisition system and method for determining an articulation angle between two sub-vehicles of a vehicle combination and vehicle combination |
PCT/EP2020/055664 WO2020182570A1 (en) | 2019-03-12 | 2020-03-04 | Detection system and method for ascertaining an articulation angle between two sub-vehicles of a vehicle combination, and vehicle combination |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3938222A1 true EP3938222A1 (en) | 2022-01-19 |
Family
ID=69903099
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20712853.9A Pending EP3938222A1 (en) | 2019-03-12 | 2020-03-04 | Detection system and method for ascertaining an articulation angle between two sub-vehicles of a vehicle combination, and vehicle combination |
Country Status (5)
Country | Link |
---|---|
US (1) | US11813910B2 (en) |
EP (1) | EP3938222A1 (en) |
CN (1) | CN113518721A (en) |
DE (1) | DE102019106275A1 (en) |
WO (1) | WO2020182570A1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
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US11783506B2 (en) * | 2020-12-22 | 2023-10-10 | Continental Autonomous Mobility US, LLC | Method and device for detecting a trailer angle |
DE102021126816A1 (en) | 2021-10-15 | 2023-04-20 | Zf Cv Systems Global Gmbh | Method for determining an articulation angle, processing unit and vehicle |
CN114872790B (en) * | 2022-04-29 | 2023-04-07 | 盛视科技股份有限公司 | Method and system for detecting steering included angle of trailer based on vision |
CN115412676B (en) * | 2022-09-13 | 2024-09-06 | 清华大学 | Panoramic looking-around system based on weight mask and panoramic image fusion method |
CN116202424B (en) * | 2023-04-28 | 2023-08-04 | 深圳一清创新科技有限公司 | Vehicle body area detection method, tractor and tractor obstacle avoidance system |
CN117657295B (en) * | 2024-02-02 | 2024-05-28 | 盛视科技股份有限公司 | Trailer steering angle detection method and detection system |
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DE102004022113A1 (en) * | 2004-05-05 | 2005-11-24 | Robert Bosch Gmbh | Monitoring a car trailer with a reversing camera |
US7904222B2 (en) | 2007-06-27 | 2011-03-08 | GM Global Technology Operations LLC | Trailer articulation angle estimation |
JP2009060499A (en) * | 2007-09-03 | 2009-03-19 | Sanyo Electric Co Ltd | Driving support system, and combination vehicle |
US9085261B2 (en) * | 2011-01-26 | 2015-07-21 | Magna Electronics Inc. | Rear vision system with trailer angle detection |
DE102011104256A1 (en) | 2011-06-15 | 2012-07-26 | Audi Ag | Bend angle sensor for driver assistance system of motor car formed for drawing trailer with drawbar, has computing unit comparing image features with current image to determine bend angle, where features are stored in calibration phase |
DE102011079632A1 (en) | 2011-07-22 | 2013-01-24 | Zf Friedrichshafen Ag | Tow bar for coupling towing vehicle e.g. tractor with trailer vehicle, attaches sensor device of coupling ball and coupling lock provided on support to towing vehicle |
US9464887B2 (en) * | 2013-11-21 | 2016-10-11 | Ford Global Technologies, Llc | Illuminated hitch angle detection component |
DE102014211106A1 (en) | 2014-06-11 | 2015-12-17 | Volkswagen Aktiengesellschaft | Marker and device for positioning, positioning, moving a vehicle and determining a kink angle |
DE102014212821A1 (en) * | 2014-07-02 | 2016-01-07 | Zf Friedrichshafen Ag | Device and method for detecting a swivel angle between a vehicle and a trailer device |
US9437055B2 (en) * | 2014-08-13 | 2016-09-06 | Bendix Commercial Vehicle Systems Llc | Cabin and trailer body movement determination with camera at the back of the cabin |
US9840003B2 (en) * | 2015-06-24 | 2017-12-12 | Brain Corporation | Apparatus and methods for safe navigation of robotic devices |
US10017115B2 (en) | 2015-11-11 | 2018-07-10 | Ford Global Technologies, Llc | Trailer monitoring system and method |
US9798953B2 (en) * | 2015-12-17 | 2017-10-24 | Ford Global Technologies, Llc | Template matching solution for locating trailer hitch point |
EP3390121B1 (en) * | 2016-01-14 | 2022-03-09 | Continental Automotive Systems, Inc. | Vehicle-trailer backing system having targetless hitch angle detection and trailer geometry learning |
US20180040129A1 (en) * | 2016-08-02 | 2018-02-08 | Denso International America, Inc. | Trailer articulation calculating system and method for calculating articulation angle of trailer |
DE102017119968B4 (en) | 2017-08-31 | 2020-06-18 | Saf-Holland Gmbh | Trailer and system for identifying a trailer and supporting a coupling process to a tractor |
EP3552926A1 (en) * | 2018-04-09 | 2019-10-16 | Continental Automotive GmbH | Apparatus for determining an angle of a trailer attached to a vehicle |
EP3678096B1 (en) * | 2019-01-07 | 2021-06-23 | Continental Automotive GmbH | Method for calculating a tow hitch position |
-
2019
- 2019-03-12 DE DE102019106275.6A patent/DE102019106275A1/en active Pending
-
2020
- 2020-03-04 WO PCT/EP2020/055664 patent/WO2020182570A1/en unknown
- 2020-03-04 US US17/437,059 patent/US11813910B2/en active Active
- 2020-03-04 EP EP20712853.9A patent/EP3938222A1/en active Pending
- 2020-03-04 CN CN202080018340.0A patent/CN113518721A/en active Pending
Also Published As
Publication number | Publication date |
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US11813910B2 (en) | 2023-11-14 |
DE102019106275A1 (en) | 2020-09-17 |
CN113518721A (en) | 2021-10-19 |
WO2020182570A1 (en) | 2020-09-17 |
US20220161619A1 (en) | 2022-05-26 |
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