EP4543727A1 - Verfahren und assistenzsystem für eine informationsfilterbasierte fahrschlauchschätzung eines kraftfahrzeugs - Google Patents
Verfahren und assistenzsystem für eine informationsfilterbasierte fahrschlauchschätzung eines kraftfahrzeugsInfo
- Publication number
- EP4543727A1 EP4543727A1 EP23730452.2A EP23730452A EP4543727A1 EP 4543727 A1 EP4543727 A1 EP 4543727A1 EP 23730452 A EP23730452 A EP 23730452A EP 4543727 A1 EP4543727 A1 EP 4543727A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- motor vehicle
- data
- measurement data
- updated
- estimate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
- B60W30/08—Active safety systems predicting or avoiding probable or impending collision or attempting to minimise its consequences
- B60W30/095—Predicting travel path or likelihood of collision
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
- B60W40/02—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models related to ambient conditions
- B60W40/06—Road conditions
- B60W40/072—Curvature of the road
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
- B60W40/02—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models related to ambient conditions
- B60W40/04—Traffic conditions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W50/0097—Predicting future conditions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2540/00—Input parameters relating to occupants
- B60W2540/18—Steering angle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2554/00—Input parameters relating to objects
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2555/00—Input parameters relating to exterior conditions, not covered by groups B60W2552/00, B60W2554/00
Definitions
- the present invention relates to a method and an assistance system for estimating a driving path of a motor vehicle during its operation.
- the invention further relates to a correspondingly equipped motor vehicle.
- a driving route which can also be referred to as a driving corridor, indicates an area ahead in the direction of travel of the motor vehicle, through or along which the motor vehicle is at least expected to move.
- a driving route can be limited, for example, by road edges or the like and/or by defined edges.
- a method for detecting road edges on a road to detect a free path is described, for example, in DE 1020132005 950 B4.
- line candidates are detected based on input images and an initial vanishing point is identified in an image as a function of the line candidates.
- an area of interest is identified in the image, each area of interest including a line candidate and a surrounding area.
- the classification device assigns a trust value to the line candidate, which identifies a probability as to whether the line candidate is a roadside.
- the potential line candidate is identified as a reliable roadside based on the confidence value being greater than a predetermined value.
- the current speed of the respective vehicle and its yaw rate can be used to estimate the driving path.
- corresponding known methods are not always sufficient for more complex driver assistance systems.
- a method for lane detection is therefore proposed there.
- the vehicle's sensor system detects lane markings in an area in front of the vehicle.
- the lane markings are assigned support points with coordinates of a first coordinate system, which are then converted into a second coordinate system.
- the course of lane markings and/or lanes is reconstructed from the position of the support points in the second coordinate system.
- DE 102016 003 935 A1 discloses a method for determining edge development information that describes edge development along a route traveled by a motor vehicle.
- Trajectory data which describes the trajectory of the motor vehicle in the past and/or a pre-calculated trajectory of the motor vehicle is used as input data.
- a determination area covering the described trajectory is divided into interval areas perpendicular to the longitudinal direction of the vehicle. For each interval area, obstacle positions within the interval area are sorted depending on the position of the trajectory as belonging to a left or right edge development.
- the edge development information is then determined from the obstacle positions closest to each interval area of the trajectory. This means that the edge development information can be determined from sensor data provided via a generic data interface, independently of a model and the specific types of sensors used.
- the object of the present invention is to enable a particularly efficient estimation of a driving path of a motor vehicle during its operation.
- the method according to the invention can be used to repeatedly estimate a current driving path of a motor vehicle, which is ahead of the motor vehicle in the direction of travel.
- the method can be used in the operation of the respective motor vehicle.
- the current driving route can be estimated continuously or regularly while driving, or the estimated driving route can be updated continuously or regularly.
- measurement data that indicate or characterize a respective traffic situation of the motor vehicle are recorded with associated uncertainties.
- the measurement data can, for example, be specified or organized in a vector.
- the uncertainties can be specified or organized, for example, in an uncertainty matrix, which in particular can only contain the uncertainties of the measurement data.
- the uncertainties can, for example, indicate measurement errors, confidence intervals or correspondingly limited accuracies of the measurement data.
- the uncertainties can each be provided and/or calculated by a sensor together with the respective measurement data or measured values, for example using a predetermined heuristic or the like.
- the measurement space is therefore an abstract mathematical space. If several measurement data, for example of different types and/or for different positions or the like, are used to estimate or update the travel path, the measurement space can be correspondingly high-dimensional. In practice, the uncertainty matrix may be on the order of 100 rows and columns or more, for example.
- the measurement data can describe or depict a respective environment of the motor vehicle, in particular in the direction of travel of the motor vehicle.
- the measurement data can be or include, for example, operating or status data of the motor vehicle, movement data of other road users, which can, for example, indicate trajectories driven by third-party vehicles at previous times in the respective environment, and/or the like.
- the individual measurement data can be of several different types, come from several different sensors, come from different measuring points, i.e. measuring points in the environment, and/or the like. This can enable a particularly robust and accurate estimation or updating of the driving route. However, with previous approaches this can also involve a correspondingly large data processing or computing effort. However, this problem is circumvented or avoided by the method according to the invention.
- an updated information matrix and an updated information vector are estimated in an updating step within the framework of the information filter formalism or mechanism.
- the information filter or an information filter is used here to take the new or updated measurement data, including their uncertainties, into account in the estimate or update of the route.
- the information filter is a type of Cayman filter, which is also known in technical terms as an inverse covariance filter.
- an updated estimate of the driving route is determined from the updated information matrix and the updated information vector.
- one state or State vector can be determined, which describes the route according to the current estimate or prediction.
- the present invention thus enables a driving route estimation or driving route updating, which is equivalent to previous approaches in which the updating of the estimation of the driving route by taking into account the new measurement data requires the inversion of the comparatively high-dimensional uncertainty matrix, which reflects the uncertainties of all new measurement data or .Represents measurements.
- the method according to the invention can be carried out with much less computational effort compared to such previous approaches. This can be an equivalent to previous methods or even, for example by using more measurement data and / or a more frequent or high-frequency update, improved driving path estimation in the operation of a motor vehicle, in particular also using limited hardware or calculation resources, such as control devices or embedded ones that are common today systems, enable.
- the driving route or its estimate can be described by a few parameters or values compared to the amount or number of measurement data and their uncertainties, so that also for calculation steps or method steps that are in a corresponding state space, which is used to describe the driving route or
- the parameters used to determine the state can be carried out with particularly little computational effort. Since a correspondingly accurate and reliable driving route estimation can form a basis for many different assistance systems and/or at least partially automated driving of the motor vehicle, effort and energy can therefore be saved without disadvantage saved and/or improved safety and/or improved comfort can be made particularly easy. For example, even with the calculation hardware commonly used in motor vehicles today, an update of the driving path estimate can be carried out in less than 1 ms on average, for example. This means that new measurement data or a changed traffic situation of the motor vehicle can be responded to quickly.
- the traffic situation of the motor vehicle can be given by an environmental situation or the surroundings of the motor vehicle.
- the traffic situation can include the current state of the motor vehicle, for example its position, speed, steering angle and/or the like.
- the environment can be given or described, for example, by the respective local traffic infrastructure, the presence and possibly positions of environmental features, objects, obstacles, other road users or the like, as well as their sensory detectability.
- Corresponding features or objects in the environment can be or include, for example, road or lane markings, curbs, a road or roadway, elements of road equipment, road or road edges, guardrails, strips of vegetation and/or the like.
- Matrix inversion for large matrices is fundamentally very complex. This concerns the measurement uncertainty matrix that has to be inverted for the update in previous methods, which is much larger than the state uncertainty matrix.
- the estimation problem can be formulated based on information matrix and information vector. At least as part of the solution, the information filter can be applied. All individual measurements can be viewed independently. This means that instead of inverting the comparatively large entire measurement uncertainty matrix for updating, only an inversion of several comparatively much smaller measurement uncertainty matrices can be carried out.
- the final inversion of the information matrix, which is also comparatively small, to transfer the updated estimate into the state space involves significantly less effort than inverting the entire measurement uncertainty matrix.
- the measurement data describe at least the road ahead of the motor vehicle in its direction of travel at different distances from the motor vehicle, i.e. from its current position.
- the measurement data can therefore characterize, image or scan the respective environment or street, for example with a resolution in the range of centimeters or decimeters or on the order of 1 m, for example up to a distance of several 10 m.
- This allows the environment or the The road ahead can be recognized particularly precisely, which can ultimately enable a particularly accurate, robust and reliable estimate of the route.
- the use of such detailed measurement data as a basis for estimating the driving route is made possible here by the particularly efficient data processing, i.e. the particularly efficient driving route estimation, without significant disadvantages compared to previous approaches, which, given the calculation capacity or calculation hardware, may only be able to process fewer or less detailed measurement data in real time .
- the measurement data are organized in a measurement data vector and the associated uncertainties in an uncertainty matrix.
- the individual measurement data and their associated uncertainties are taken into account independently of each other without inverting the entire uncertainty matrix.
- individual submatrices of the entire uncertainty matrix corresponding to the individual measurement data can be inverted individually, i.e. individually, instead of inverting the entire uncertainty matrix.
- these submatrices may have the dimension 3 x 3 or 4 x 4, while the dimension of the entire uncertainty matrix may be on the order of 100 x 100 or more.
- the dimension of the submatrices can be an integer divisor of the dimension of the entire uncertainty matrix.
- measurements or individual measurement data can be filtered in each run or period of the method by summing the corresponding information matrices and information vectors.
- individual measurement data can be individual measurement points or data points from one or more data sources.
- An individual can Sensor delivers a single measurement data or several individual measurement data for each new measurement.
- the embodiment of the present invention proposed here offers an approach that is easy to implement in order to estimate the driving path without loss of accuracy and thereby avoid the computing or data processing effort for inverting the entire uncertainty matrix.
- a corresponding updated state or state vector for the driving route is first determined from the updated information matrix and the updated information vector.
- This state or state vector characterizes or describes the driving path through predetermined, in particular geometric, parameters.
- the number of these predetermined parameters is smaller, in particular much smaller, than the dimension of the measurement data or the measurement space in which the measurement data and their uncertainties are specified. If the measurement data is organized in vector or matrix form, there may be dozens or hundreds of rows or even columns.
- the number of predetermined parameters for characterizing or describing or specifying the driving route or the state or state vector for the driving route can, for example, be at most 20 or at most 10, for example 4.
- the number of parameters can, for example, be at most one fifth or at most one tenth of the number of lines of the measurement data vector or the associated uncertainty matrix. In this way, the driving route, i.e. its current estimate, can be specified or handled with particularly little data processing effort.
- the predetermined parameters for characterizing the travel tube include its curvature, in particular at several predetermined distances from the motor vehicle or from its current position, i.e. at several in the direction of travel of the motor vehicle or in the longitudinal direction or along the longitudinal extent of the Driving tube in spatially spaced locations.
- Such a characterization of the driving route can be sufficient for practical purposes, since certain properties of the driving route or corresponding boundary conditions for the course of the driving route must always be given or fulfilled, i.e. can be specified accordingly.
- the driving tube always runs on the local road surface, can have a predetermined width, can have at most a predetermined maximum curvature or, for example, determined by the technical properties of the motor vehicle, must run continuously, i.e. without interruptions, and must not have any jumps, steps or transverse offsets and/or the like.
- the predetermined parameters for characterizing the travel tube can include, for example, its radius, length, width, orientation and/or the like. The respective values of these parameters can be specified or entered, for example, in the state vector mentioned elsewhere. This can enable particularly simple and efficient data processing.
- the most recently determined updated information matrix is inverted in order to determine the updated state of the travel tube.
- This inverted information matrix is then multiplied by the most recently determined updated information vector.
- a corresponding updated estimated course of the travel path in the respective environment is determined from the updated state of the travel path using a predetermined model.
- the specified model models or takes into account at least one specified condition for a permissible real driving route.
- the model can, for example, model the properties or boundary conditions for the route of the route mentioned elsewhere. From the combination of the state, which can be specified, for example, by basic or selective parameter values, and the at least one predetermined condition, the model can determine the complete route course, for example as a two- or three-dimensional elongated geometric object, which can be located, for example, relative to the current position of the motor vehicle and / or in a predetermined, for example world-fixed, coordinate system.
- the model can therefore indicate or model how a real course of the driving path results from the respective measurement data or the state or state vector of the driving path estimated therefrom.
- the model can, for example, be stored or implemented in an estimation device that is set up to estimate the state of the driving tube.
- the model can build the real route based on the current state, for example from circle segments or curve lines or the like.
- the condition can be specified, for example, that transitions between successive circle segments or curve lines should be jump-free, i.e. these circle segments or curve lines must connect to one another or merge into one another without a jump, offset or distance. This can enable particularly efficient modeling of the real route.
- environmental data is recorded as part of the measurement data.
- These environmental data describe the respective surroundings of the motor vehicle, in particular in the direction of travel of the motor vehicle.
- Steering angle data of the motor vehicle are also recorded as part of the measurement data.
- These steering angle data can, for example, indicate or include a current steering angle or a current change in the steering angle, for example its direction of change and/or speed of change. It is then determined whether a lane change maneuver or a turning maneuver of the motor vehicle is likely to take place in an area from the current position of the motor vehicle up to a predetermined distance from the motor vehicle in its direction of travel. This can be done, for example, using navigation data, a driving history of the motor vehicle and/or the respective driver, a corresponding predetermined movement model and/or the like.
- the updated estimate of the driving path is determined up to the predetermined distance based on the steering angle data and from the predetermined distance based on the environmental data without taking the steering angle data into account.
- the driving tube can only can be estimated based on the steering angle data or based on the steering angle data and the environmental data. This can enable a particularly accurate and reliable estimate of the driving distance up to the specified distance, since the steering angle in the corresponding close range primarily determines and limits the direction of movement of the motor vehicle.
- the subsequent, more distant driving path can also be estimated particularly reliably, since unforeseen steering angle changes or steering maneuvers can occur between the current position of the motor vehicle and the specified distance, so that the current Steering angle data at the current position of the motor vehicle from the specified distance do not form a reliable basis for estimating the route of the route.
- the embodiment of the present invention proposed here enables particularly accurate and reliable estimation of the travel path with particularly little computing or data processing effort, both in the close range up to the predetermined distance and in the long range beyond.
- the predetermined distance can, for example, depend on the respective motor vehicle or its technical characteristics and/or the respective environment and/or the current speed of the motor vehicle and/or the like.
- the predetermined distance can therefore be predetermined dynamically, i.e. automatically adjusted dynamically during operation of the motor vehicle.
- the specified distance can also be specified as a fixed value.
- the predetermined distance can be between 10 m and 30 m, for example 15 m. Depending on the application, other values may also be possible.
- a larger distance can be specified or set.
- a greater distance can be specified or set. The same can be said, for example, on a motorway or a road developed similar to a motorway, a greater distance must be specified or set than in urban areas. This enables a route estimation that is particularly adapted to the situation, i.e. optimized in different situations or environments.
- the present invention further relates to an assistance system for a motor vehicle.
- the assistance system according to the invention has an interface - implemented in hardware and/or software - for acquiring measurement data that characterize a traffic situation of the motor vehicle.
- the assistance system according to the invention has a process device, for example a microchip, microprocessor or microcontroller or the like, and a computer-readable data memory coupled thereto.
- the assistance system according to the invention is set up to carry out the method according to the invention, in particular automatically.
- the assistance system according to the invention can therefore be set up for a regular or continuous or quasi-continuous estimation or prediction of the driving path of the motor vehicle or an update of the estimated or predicted driving path of the motor vehicle, for example depending on a measurement or recording frequency of the measurement data.
- a corresponding operating or computer program can be stored in the data memory, which encodes or implements the method steps, measures or processes or corresponding control instructions mentioned in connection with the method according to the invention.
- This operating or computer program can then be executable by means of the process device in order to carry out the corresponding method or to cause it to be carried out.
- the invention further relates to a motor vehicle which has an environmental sensor system for recording environmental data and an assistance system according to the invention.
- the environmental data can be data that describe or characterize a respective environment of the motor vehicle, particularly in the direction of travel of the motor vehicle.
- the environmental sensor system can be part of the assistance system or connected to it, for example through an on-board electrical system of the motor vehicle.
- the motor vehicle according to the invention can in particular be or correspond to the motor vehicle mentioned in connection with the method according to the invention and/or in connection with the assistance system according to the invention. Further features of the invention can emerge from the claims, the figures and the description of the figures.
- the drawing shows an exemplary schematic overview representation of a traffic situation to illustrate an information filter-based driving path estimation for a vehicle.
- the figure only a representative selection of elements that appear several times is explicitly marked for the sake of clarity.
- the identification of objects that are relevant to the longitudinal and lateral control of a vehicle may require recognition of the possible driving path of the vehicle, to which all detected objects can then be related.
- a predetermined fusion algorithm can be used to correspondingly fuse different measurement or input data from different data sources, such as smart, heterogeneous sensors or the like .
- different aspects of the respective environment i.e. the respective environment, such as data on lane markings, edge developments, turf, curbs and/or the like, can be recorded and combined to form a coherent overall picture of the driving route.
- Moving objects in particular those assigned to the driving path, in the area surrounding the vehicle can be used, for example, for longitudinal control functions, such as ACC, intersection assistant, adaptive recuperation and/or the like, as well as for lateral control functions, such as steering and lane guidance assistants or the like or be taken into account.
- longitudinal control functions such as ACC, intersection assistant, adaptive recuperation and/or the like
- lateral control functions such as steering and lane guidance assistants or the like or be taken into account.
- Previous approaches are often based on the assumption that the vehicle's driving pattern, unless it comes from a planning component of a system automated vehicle guidance is already known, corresponds to the course of the currently traveled road or the currently traveled lane where the vehicle is located, and the respective surroundings must be determined with the help of sensors that detect it.
- This course can be determined, for example, in a recursive estimation process that compares a current idea or estimate of the course of the road or the respective lane with lane markings recognized in sensor data, for example in camera images.
- the problem to be solved is to determine or estimate the route ahead or its course.
- corresponding estimation processes typically work in the corresponding state space of the solutions, where the uncertain state is updated with every uncertain measurement, i.e. with every recording or acquisition of uncertain measurement data or, for example, with every detection of lane markings or the course of the road or lane or the like that is subject to uncertainty.
- This state can be specified, for example, by parameters or parameter values of a parametric representation of the geometry of the road or the traffic lane.
- the estimated state can be brought into better agreement with the respective measurement or adjusted to the measurement while at the same time reducing the uncertainty in the estimate of the state.
- the uncertainties of the measurements or the measurement data are typically represented using high-dimensional matrices of the covariances of the measured variables.
- FIG. 1 shows an exemplary schematic and partial overview representation of a traffic situation. Specifically, a section of a street 1 is shown, which is delimited by road edges 2. For example, on road 1 there are two lanes that are separated from each other by a lane marking 3. Furthermore, a protective barrier 4 runs along one of the road edges 2.
- a motor vehicle 5 is moving on the road 1.
- This motor vehicle 5 can be equipped with assistance functions that use a current driving route of the motor vehicle 5 as a data basis.
- the motor vehicle 5 is set up for a continuous or regular estimation of the driving route or a corresponding update of the estimation of the driving route.
- the motor vehicle 5 has an environmental sensor system 6 and an assistance system 7.
- the assistance system 7 can capture environmental data recorded by the environmental sensor system 6 as well as other data, for example steering angle data of the motor vehicle 5, via an interface 8.
- the assistance system 7 - as indicated schematically here by way of example - can have a processor 9 and a computer-readable data memory 10.
- the collected data can be of different types, come from different sources and characterize or describe the environment of the motor vehicle 5 at different points.
- several corresponding data or measurement points 11 are represented here, of which only a selection is explicitly marked for the sake of clarity.
- the data or measurement points 11 can come, for example, from a third-party vehicle 12 that is also traveling on the road 1, whose trajectory 13 describes one or more points derived from the current steering angle or a current position of steered wheels 16 of the motor vehicle 5, i.e. based on the steering angle include or represent the route 17 of the motor vehicle 5 projected into the future, measurements or detections of the edge of the road 2, the lane marking 3, the guardrail 4 and/or the like.
- the assistance system 7 continuously and repeatedly determines a current driving route estimate 14 during operation of the motor vehicle 5, which is also illustrated schematically here.
- the respective driving route estimate 14 can be described by comparatively few parameters - compared to the number or dimension of the data recorded as the basis for the driving route estimate 14.
- a state to be estimated for the travel tube can, for example, consist of four parameters, each of which indicates the curvature of the travel tube at different distances, which are represented here as example support points 15.
- the assistance system 7 can then describe, i.e. determine, the complete course of the driving route, i.e. the complete driving route estimate 14 for the motor vehicle 5, by means of a predetermined model, for example stored in the data memory 10, which uses this estimated state as input.
- the current driving route estimate 14 can then be stored, for example, in the data memory 10 and/or provided or sent via the interface 8.
- the assistance system 7 estimates the information vector and the associated information matrix within the framework of the information filter formalism based on the data recorded in each case, instead of directly estimating the state of the travel tube and the associated uncertainty.
- the application of the information filter is therefore provided here, whereby the respective updating of the driving path estimate 14 is possible, i.e.
- the individual recorded data or measurements or measurement data for example of the individual measuring points 11, are taken into account independently of one another in the respective update step.
- the inversion of the entire uncertainty matrix can be effectively replaced by easier-to-calculate inversions or inversions of correspondingly smaller matrices.
- the estimate of the respective state can then be done after inversion or inversion of the comparatively low-dimensional information matrix can be obtained from the information vector.
- a simplified driving route estimate 14 can, for example, be determined based on the current steering angle of the motor vehicle 5, which can then be continuously updated as described here, in particular taking into account environmental data or . a based on this estimate of the course of the road 1 ahead of the motor vehicle 5 in the direction of travel.
- the estimation of the parameters indicating the state of the driving tube for example the mentioned curvatures on the several support points 15, are adapted in an ongoing process to the latest recorded data or the latest measurement or estimate of the actual course of the road 1.
- each update step several 100 uncertain measurements, for example in the form of a specific angular indication of the course of the street 1, can be available for fusion at a specific one of several different distances.
- the respective update can be carried out with particularly little computing effort and therefore particularly quickly or with correspondingly lower computing resources, especially in real time.
- This can, for example, enable such an update step to be carried out on a conventional embedded system or control device in an average of no more than 1 ms, especially even in unfavorable cases.
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Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022115720.2A DE102022115720B4 (de) | 2022-06-23 | 2022-06-23 | Verfahren und Assistenzsystem für eine informationsfilterbasierte Fahrschlauchschätzung eines Kraftfahrzeugs |
| PCT/EP2023/064680 WO2023247151A1 (de) | 2022-06-23 | 2023-06-01 | Verfahren und assistenzsystem für eine informationsfilterbasierte fahrschlauchschätzung eines kraftfahrzeugs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4543727A1 true EP4543727A1 (de) | 2025-04-30 |
Family
ID=86764537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23730452.2A Withdrawn EP4543727A1 (de) | 2022-06-23 | 2023-06-01 | Verfahren und assistenzsystem für eine informationsfilterbasierte fahrschlauchschätzung eines kraftfahrzeugs |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20250388215A1 (de) |
| EP (1) | EP4543727A1 (de) |
| CN (1) | CN119343278A (de) |
| DE (1) | DE102022115720B4 (de) |
| WO (1) | WO2023247151A1 (de) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006040334A1 (de) * | 2006-08-29 | 2008-03-06 | Robert Bosch Gmbh | Verfahren für die Spurerfassung mit einem Fahrerassistenzsystem und Fahrerassistenzsystem |
| DE102008021380B4 (de) * | 2008-04-29 | 2016-09-15 | Continental Automotive Gmbh | Verfahren und Vorrichtung zum Vorhersagen eines Verlaufs einer Fahrbahn und Fahrerassistenzsystem |
| US8750567B2 (en) * | 2012-04-09 | 2014-06-10 | GM Global Technology Operations LLC | Road structure detection and tracking |
| DE102016003935B4 (de) * | 2016-03-31 | 2023-03-30 | Audi Ag | Verfahren zur Ermittlung einer Randbebauungsinformation in einem Kraftfahrzeug und Kraftfahrzeug |
| DE102017106349A1 (de) * | 2017-03-24 | 2018-09-27 | Valeo Schalter Und Sensoren Gmbh | Fahrerassistenzsystem für ein Fahrzeug zum Prognostizieren eines dem Fahrzeug vorausliegenden Fahrspurbereichs, Fahrzeug und Verfahren |
| DE102018215753A1 (de) * | 2018-09-17 | 2020-03-19 | Zf Friedrichshafen Ag | Vorrichtung und Verfahren zum Ermitteln einer Trajektorie eines Fahrzeugs |
| CN114179825B (zh) * | 2021-12-08 | 2022-11-18 | 北京百度网讯科技有限公司 | 多传感器融合获取量测值置信度方法及自动驾驶车辆 |
-
2022
- 2022-06-23 DE DE102022115720.2A patent/DE102022115720B4/de active Active
-
2023
- 2023-06-01 CN CN202380045941.4A patent/CN119343278A/zh active Pending
- 2023-06-01 EP EP23730452.2A patent/EP4543727A1/de not_active Withdrawn
- 2023-06-01 WO PCT/EP2023/064680 patent/WO2023247151A1/de not_active Ceased
- 2023-06-01 US US18/877,666 patent/US20250388215A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE102022115720B4 (de) | 2025-12-04 |
| CN119343278A (zh) | 2025-01-21 |
| US20250388215A1 (en) | 2025-12-25 |
| WO2023247151A1 (de) | 2023-12-28 |
| DE102022115720A1 (de) | 2023-12-28 |
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