EP4042107A1 - Verfahren zur prädiktion eines geschwindigkeitsprofils eines fahrzeugs - Google Patents
Verfahren zur prädiktion eines geschwindigkeitsprofils eines fahrzeugsInfo
- Publication number
- EP4042107A1 EP4042107A1 EP20796700.1A EP20796700A EP4042107A1 EP 4042107 A1 EP4042107 A1 EP 4042107A1 EP 20796700 A EP20796700 A EP 20796700A EP 4042107 A1 EP4042107 A1 EP 4042107A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- input data
- data
- route
- vehicle
- speed
- 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
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000004458 analytical method Methods 0.000 claims abstract description 9
- 238000009826 distribution Methods 0.000 claims description 3
- 230000006399 behavior Effects 0.000 description 11
- 238000004393 prognosis Methods 0.000 description 5
- 238000013459 approach Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 238000012384 transportation and delivery Methods 0.000 description 3
- 230000006855 networking Effects 0.000 description 2
- 238000013528 artificial neural network Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000013527 convolutional neural network Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010801 machine learning Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 238000013439 planning Methods 0.000 description 1
- 238000012706 support-vector machine Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
- G01C21/34—Route searching; Route guidance
- G01C21/3453—Special cost functions, i.e. other than distance or default speed limit of road segments
- G01C21/3492—Special cost functions, i.e. other than distance or default speed limit of road segments employing speed data or traffic data, e.g. real-time or historical
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
- G01C21/28—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network with correlation of data from several navigational instruments
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/052—Detecting movement of traffic to be counted or controlled with provision for determining speed or overspeed
Definitions
- the present invention relates to a method for predicting a speed profile of a vehicle.
- Knowing the future speed profile is important for numerous powertrain applications. For example, knowing the expected driving profile trajectory can improve the operating strategy of hybrid, electric and combustion engine vehicles, adapt various vehicle functions to individual driving behavior, estimate the energy requirement for the planned route and estimate various vehicle states (such as temperatures). For these applications, a prediction horizon is usually necessary that goes beyond the range of onboard sensors (radar, camera, etc.). Attributes of digital maps (e.g. speed limits, curve radii) can be used for this.
- the prediction horizon is limited by environmental sensors. Attributes of digital maps are only suitable to a limited extent for predicting the expected speed profile, since the maximum speed cannot be reached on numerous route sections due to necessary braking processes. In addition, the individual driver behavior has an influence on the height of the speed profile.
- the present invention is based on the object of providing a method and a control device for predicting a speed profile of a vehicle, which can provide a reliable speed prediction for all route sections.
- a first aspect of the invention relates to a method for predicting a speed profile of a vehicle, the speed profile representing a future speed profile along a predetermined travel route up to a specific forecast horizon.
- the method has the following steps: generating a prediction model; Entering input data into the prediction model; Calculating output data from the input data on the basis of at least one algorithm contained in the prediction model, the output data predicting the speed profile of the vehicle; Delivering the delivery data from the prediction model.
- the input data have a first input data group, which contains at least geographic coordinates of the route, and a second input data group, which contains various input data, namely at least location information of a digital map; average traffic flow data along the route; and / or speed profiles of networked vehicles.
- a selection of the input data from the second input data group is carried out on the basis of a situation analysis using predetermined criteria.
- Different models can be created with different data sources. The models differ in terms of accuracy. Depending on the availability of data and other boundary conditions (e.g. available LTE networking), the most suitable model should be selected automatically. This means that there are no longer any route sections for which a forecast cannot be made available.
- the location information of a digital map has at least one element from a group, the geographic coordinates of the vehicle; Map attributes along the route such as
- the average traffic flow data along the route represent a current traffic flow or historical traffic patterns.
- the first input data group additionally contains vehicle data which have at least one element from a group which contains a speed value of the vehicle; a current time; Traffic Message Channel, TMC, Data; temperature, humidity, rain, snow and / or ice data recorded by the vehicle; image or video data captured by a vehicle camera; and brightness data sensed by a flow sensor of the vehicle.
- vehicle data which have at least one element from a group which contains a speed value of the vehicle; a current time; Traffic Message Channel, TMC, Data; temperature, humidity, rain, snow and / or ice data recorded by the vehicle; image or video data captured by a vehicle camera; and brightness data sensed by a flow sensor of the vehicle.
- the first input data group additionally contains individual driving behavior data that were generated on the basis of previous trips, in particular driver behavior in comparison to the traffic flow, to speed quantiles or to map attributes such as speed limits.
- the selection of the input data from the second input data group is preferably carried out as a separate method step in which one or more of these criteria mentioned is checked.
- Availability of the various input data from the second input data group here preferably includes the current or general availability of the data.
- the current availability can be limited, for example, by a temporally and / or spatially-related lack of radio connection (e.g. dead spots).
- General availability is summarized here as to whether corresponding data exist at all, i.e. whether, for example, speed profiles have been collected for the respective route section, whether this data is current or out of date and / or whether any collected data is accessible.
- any costs incurred for the selection of the input data of the second input data group can preferably also be taken into account.
- legal and / or personal data protection requirements can restrict the selection of input data from the second input data group.
- the availability and / or the usefulness of using the various input data from the second input data group can also depend on the respective road class (e.g. country road or motorway) along the route.
- road class e.g. country road or motorway
- the prediction based on certain input data of the second input data group is more precise than when using other input data of the second input data group. Therefore, the quality of the prediction can also be taken into account when selecting the input data.
- the situation analysis therefore uses at least one of the predetermined criteria: On route sections without a sufficient mobile data connection, input data of the second input data group is selected that was previously stored locally in the vehicle or that is received by means of a traffic message channel (TMC); on route sections without a sufficient mobile data connection, input data of the second input data group is selected, which is loaded in advance via a backend; the location information of a digital map and / or the average traffic flow data along the route are selected on route sections for which no or outdated collected speed profiles are available; with a preview horizon of a certain minimum length, the location information on a digital map and / or the average traffic flow data are selected in the form of historical traffic patterns; on route sections for which no average traffic flow data and no speed profiles are available, the location information from a digital map is selected; on country roads the location information of a digital map and the speed profiles are selected; on motorways the average traffic flow data is selected, preferably in combination with the individual driving behavior data; if it is determined during the journey that the prediction based on certain
- the speed profiles of networked vehicles are used to create distributions for collected speed profiles with respect to fixed location points along the route.
- the first input data group contains speed profiles at the current point in time or along a retrospective horizon.
- a second aspect of the invention relates to a control device which is configured to carry out the method.
- FIG. 1 schematically shows a prediction of a speed profile of a vehicle, which represents a future speed profile along a predetermined travel route up to a specific forecast horizon;
- FIG. 2 schematically shows a system architecture for the method for predicting the speed profile of the vehicle according to an exemplary embodiment.
- FIG. 1 schematically shows a prediction of a speed profile 1 of a vehicle 2, which represents a future speed profile along a predetermined travel route x up to a specific forecast horizon 3.
- the reference symbol 8 denotes a past speed profile along the route x up to a specific rear horizon 9.
- FIG. 2 schematically shows a system architecture for the method for predicting the speed profile 1 of the vehicle 2 according to an exemplary embodiment.
- the method that works with this system architecture has the following steps: generating a prediction model 4; Inputting input data 5.1, 5.2 into the prediction model 4; Calculation of delivery data 6 from the input data 5.1. 5.2 on the basis of at least one algorithm contained in the prediction model 4, the output data 6 predicting the speed profile 1 of the vehicle 2; and outputting the output data 6 from the prediction model 4.
- the input data 5.1, 5.2 contain a first input data group 5.1.1, 5.1.2, 5.1.3, in which at least geographic coordinates 5.1.1 of the route x are contained.
- the intended route x of the vehicle 2 is used as an input and can be specified by the driver or determined by an intelligent algorithm. Together with the geographic coordinates 5.1.1 of the route x, speed profiles at the current point in time or along the look-back horizon 9 can also be entered into the prediction model 4 (not shown in FIG. 2).
- the first input data group 5.1.1, 5.1.2, 5.1.3 additionally contains vehicle data 5.1.2, which have at least one element from a group that contains a speed value of the vehicle 2; a current time; Traffic Message Channel, TMC, Data; temperature, humidity, rain, snow and / or ice data recorded by the vehicle 2; image or video data captured by a vehicle camera; and brightness data detected by a flow sensor of vehicle 2.
- vehicle data 5.1.2 which have at least one element from a group that contains a speed value of the vehicle 2; a current time; Traffic Message Channel, TMC, Data; temperature, humidity, rain, snow and / or ice data recorded by the vehicle 2; image or video data captured by a vehicle camera; and brightness data detected by a flow sensor of vehicle 2.
- the first input data group 5.1.1, 5.1.2, 5.1.3 additionally contains individual driving behavior data 5.1 .3 that were generated on the basis of previous trips, in particular driver behavior in comparison to the traffic flow, to speed quantiles or to map attributes such as speed limits.
- the vehicle data 5.1.2 is used to adjust the forecast for a short forecast horizon, for example for the next 100 m, more precisely.
- the input data 5.1, 5.2 contain a second input data group 5.2.1, 5.2.2, 5.2.3, which contains various input data, namely at least location information 5.2.1 of a digital map; average traffic flow data
- the location information 5.2.1 of a digital map can be stored locally in the vehicle 2 (so-called onboard maps), or they can be loaded via mobile radio (for example LTE) from a backend, such as a server (so-called offboard maps) ).
- the location information 5.2.1 of a digital map has at least one element from a group, the geographic coordinates of the vehicle 2; Contains map attributes along the route x such as speed restrictions, traffic lights, traffic light phases, right of way, traffic signs, curve radii and / or gradients.
- the average traffic flow data 5.2.2 along the route x represent a current traffic flow or historical traffic patterns.
- the input data from the second input data group 5.2.1, 5.2.2, 5.2.3 are selected on the basis of a situation analysis 10 using predetermined criteria 11. At least one of these data sources from the second input data group 5.2.1, 5.2.2, 5.2.3 is necessary in order to be able to carry out a speed forecast for a longer forecast horizon 3 (e.g. several km).
- These data sources are used as input data by a machine learning algorithm, from which the speed profile 1 along the planned route x can be predicted.
- Various methods can be used as prediction model 4 (e.g. regression, neural networks, support vector machines, long-short-term memory networks (LSTM),
- the prediction model 4 can be trained on the basis of predefined input data 5.1, 5.2 and predefined output data 6.
- the input data 5.1, 5.2 within the parameterizable review horizon 9 can also be used as an input.
- the accuracy of the forecast increases with the number of data sources used, ie in particular from the location information 5.2.1 of a digital map to the average traffic flow data 5.2.2 to the speed profiles 5.2.3 of networked vehicles.
- the selection of the input data of the second input data group 5.2.1, 5.2.2, 5.2.3 can be selected dynamically, so that a prognosis of the speed profile 1 is available at any point in time.
- the dynamic selection of the second input data group 5.2.1, 5.2.2, 5.2.3 is described below.
- the aim is to select the appropriate input data of the second input data group 5.2.1, 5.2.2, 5.2.3 at any point in time and in any situation and thus to be able to ensure a reliable speed forecast at any time.
- the situation analysis 10 uses at least one of the predetermined criteria 11:
- input data of the second input data group 5.2.1, 5.2.2, 5.2.3 are selected that were previously stored locally in vehicle 2 or that are received via the TMC traffic message channel. These can be onboard cards. Input data of the second input data group 5.2.1, 5.2.2, 5.2.3 can also be selected on route sections without a sufficient mobile data connection, which are loaded in advance via a backend. In particular, if dead spots on these route sections are known in advance, for example through network coverage maps, which can partly be created by crowdsourcing, it is possible to load the information into the vehicle in advance via the backend. For example, predictive traffic information, collected speed profiles or tiles can be downloaded from precise digital maps.
- network coverage maps which can partly be created by crowdsourcing
- the location information 5.2.1 of a digital map (offboard or onboard) and / or the average traffic flow data 5.2.2 along the route x are selected on route sections for which no or outdated collected speed profiles 5.2.3 are available.
- Possible applications for forecasts that are relatively far in the future are, for example, route planning for electric vehicles for future journeys or the charging management of electric and hybrid vehicles.
- the location information 5.2.1 from a digital map is selected.
- the location information 5.2.1 of a digital map and the speed profiles 5.2.3 are selected. Traffic flow information is usually not available on rural roads.
- the individual speed is mainly determined by curve radii, visibility (e.g. visible curves) and the elevation profile. The traffic flow therefore usually has little influence and is often not precise enough, even if it is available (e.g. reducing the speed in front of bends or blind spots), so that it is better to use collected speed profiles 5.2.3. Since the traffic influence is low, the collected speed profiles 5.2.3 may also be out of date.
- the average traffic flow data 5.2.2 are selected on motorways, preferably in combination with the individual driving behavior data 5.1.3 from the first input data group. On motorways, the prognosis can primarily be calculated based on the average traffic flow data 5.2.2, taking into account the individual driving behavior data 5.1.3, since the traffic flow is current on motorways.
- the location information 5.2.1 of a digital map and the average traffic flow data 5.2.2 along the route x are selected. If a service fee for certain input data from the second input data group 5.2.1, 5.2.2, 5.2.3 exceeds a threshold value, other input data are selected from the second input data group 5.2.1, 5.2.2, 5.2.3.
- the selected input data from the second input data group 5.2.1, 5.2.2, 5.2.3 ensures that a speed prediction is possible in every situation and thus the speed prediction can be used as a reliable input variable for various applications.
- the input data from the second input data group 5.2.1, 5.2.2, 5.2.3 and the corresponding prediction model 4 can be selected dynamically as a function of data availability, accuracy, road class, user preferences, application purpose and prediction horizon 3.
- the present invention can also be used to implement operating strategies for HEV, EV or conventional vehicles, to control exhaust gas aftertreatment systems, to increase the accuracy of navigation algorithms and for route applications for EVs.
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- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Automation & Control Theory (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Traffic Control Systems (AREA)
- Navigation (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019215376.3A DE102019215376A1 (de) | 2019-10-08 | 2019-10-08 | Verfahren zur Prädiktion eines Geschwindigkeitsprofils eines Fahrzeugs |
PCT/EP2020/077962 WO2021069418A1 (de) | 2019-10-08 | 2020-10-06 | Verfahren zur prädiktion eines geschwindigkeitsprofils eines fahrzeugs |
Publications (1)
Publication Number | Publication Date |
---|---|
EP4042107A1 true EP4042107A1 (de) | 2022-08-17 |
Family
ID=73013363
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP20796700.1A Pending EP4042107A1 (de) | 2019-10-08 | 2020-10-06 | Verfahren zur prädiktion eines geschwindigkeitsprofils eines fahrzeugs |
Country Status (5)
Country | Link |
---|---|
US (1) | US20240053161A1 (de) |
EP (1) | EP4042107A1 (de) |
CN (1) | CN114514413A (de) |
DE (1) | DE102019215376A1 (de) |
WO (1) | WO2021069418A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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DE102022206914A1 (de) | 2022-07-06 | 2024-01-11 | Robert Bosch Gesellschaft mit beschränkter Haftung | Verfahren zur Bestimmung einer geeigneten Kurvengeschwindigkeit von Fahrzeugen, Vorrichtung zur Durchführung desselben und dessen Verwendung |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
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US7221287B2 (en) * | 2002-03-05 | 2007-05-22 | Triangle Software Llc | Three-dimensional traffic report |
DE102004055275A1 (de) * | 2004-11-17 | 2006-05-18 | Robert Bosch Gmbh | Verfahren und System zur Optimierung der Funkübertragung von Daten zwischen einem Fahrzeug und einer externen Gegenstelle |
US7912628B2 (en) * | 2006-03-03 | 2011-03-22 | Inrix, Inc. | Determining road traffic conditions using data from multiple data sources |
US20120245756A1 (en) * | 2011-03-23 | 2012-09-27 | Tk Holdings Inc. | Driver assistance system |
CN102509470B (zh) * | 2011-10-14 | 2013-10-16 | 北京掌城科技有限公司 | 基于动态路径规划实现车辆节能减排的系统和方法 |
CN103632540B (zh) * | 2012-08-20 | 2015-11-25 | 同济大学 | 基于浮动车数据的城市主干道交通运行信息处理方法 |
US9286793B2 (en) * | 2012-10-23 | 2016-03-15 | University Of Southern California | Traffic prediction using real-world transportation data |
US9081651B2 (en) * | 2013-03-13 | 2015-07-14 | Ford Global Technologies, Llc | Route navigation with optimal speed profile |
US10380509B2 (en) * | 2016-02-03 | 2019-08-13 | Operr Technologies, Inc. | Method and system for providing an individualized ETA in the transportation industry |
DE102017209667A1 (de) * | 2016-12-12 | 2018-06-14 | Continental Automotive Gmbh | Speicherung von Geschwindigkeitsinformationen zur Prädiktion der zukünftigen Geschwindigkeitstrajektorie |
US10060373B2 (en) * | 2017-01-18 | 2018-08-28 | GM Global Technology Operations LLC | Linear parameter varying model predictive control for engine assemblies |
AT520320B1 (de) * | 2017-09-26 | 2019-03-15 | Avl List Gmbh | Verfahren und eine Vorrichtung zum Erzeugen eines dynamischen Geschwindigkeitsprofils eines Kraftfahrzeugs |
DE102017220420B3 (de) * | 2017-11-16 | 2019-04-18 | Continental Automotive Gmbh | Verfahren zum Erzeugen einer Verkehrsinformationssammlung, Verkehrsinformationssammlung, Sammeleinrichtung mit einer Verkehrsinformationssammlung und Fahrerassistenzeinrichtung |
-
2019
- 2019-10-08 DE DE102019215376.3A patent/DE102019215376A1/de active Pending
-
2020
- 2020-10-06 WO PCT/EP2020/077962 patent/WO2021069418A1/de active Application Filing
- 2020-10-06 EP EP20796700.1A patent/EP4042107A1/de active Pending
- 2020-10-06 CN CN202080070719.6A patent/CN114514413A/zh active Pending
- 2020-10-06 US US17/766,433 patent/US20240053161A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
DE102019215376A1 (de) | 2021-04-08 |
WO2021069418A1 (de) | 2021-04-15 |
US20240053161A1 (en) | 2024-02-15 |
CN114514413A (zh) | 2022-05-17 |
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