EP3713803A1 - Procédé et dispositif d'assistance à la conduite automatisée d'un véhicule en cas de subdivision en parties ou de fusion de parties de la voie de circulation - Google Patents
Procédé et dispositif d'assistance à la conduite automatisée d'un véhicule en cas de subdivision en parties ou de fusion de parties de la voie de circulationInfo
- Publication number
- EP3713803A1 EP3713803A1 EP18819181.1A EP18819181A EP3713803A1 EP 3713803 A1 EP3713803 A1 EP 3713803A1 EP 18819181 A EP18819181 A EP 18819181A EP 3713803 A1 EP3713803 A1 EP 3713803A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- vehicle
- taxiway
- parts
- driving
- mode
- 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- Withdrawn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
-
- 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
- B60W30/10—Path keeping
- B60W30/12—Lane keeping
-
- 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
- B60W2552/00—Input parameters relating to infrastructure
-
- 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
- B60W2552/00—Input parameters relating to infrastructure
- B60W2552/53—Road markings, e.g. lane marker or crosswalk
-
- 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
Definitions
- the invention relates to vehicles with automated driving (possibly autonomous), possibly of the automotive type, and more specifically the assistance intended to help the drivers of such vehicles to drive the latter.
- automated driving vehicle means a vehicle that can be driven in an automated manner (partial or total (without the intervention of its driver)) during an automated driving phase. It should be noted that this does not exclude that such a vehicle can also be driven manually (and therefore with intervention of its driver on the steering wheel and / or the pedals) during a manual driving phase.
- Certain automated driving vehicles generally of the automotive type, comprise an assistance device that automatically controls their positioning relative to the first and second boundaries that define the traffic lane used.
- This type of assistance device may, for example, be the one called in English LPA ("Lane Positioning Assist").
- This type of assistance device more precisely controls the automated driving of the vehicle in a so-called relative mode consisting of following it between the first and second limits of the traffic lane a trajectory, relative to the width of the taxiway, which is more or less spaced from the median line (imaginary), located equidistant from these first and second delimitations, according to the wish of the driver.
- This trajectory being relative to the width of the traffic lane, the spacing with respect to the median line is therefore not constant but proportional to this width.
- This type of control is problematic when the taxiway is subdivided into at least two parts or when parts of the taxiway are traffic merge.
- the assistance device will forward the vehicle a relative trajectory close to, or identical to, the aforementioned median line.
- the vehicle departs more and more from the first and second boundaries by occupying substantially the middle of the taxiway.
- the assistance device interprets this as a sudden widening of the traffic lane, and therefore will follow the vehicle a relative trajectory substantially identical to the median line equidistant from the first and second boundaries.
- the vehicle "leaves the line” and may suddenly find itself in the path of another vehicle traveling in the portion of the taxiway that is adjacent to the one in which it was traveling, which can be very dangerous.
- the invention is therefore particularly intended to improve the situation.
- a method on the one hand, to assist a driver of a clean vehicle to be driven in an automated manner on a traffic lane defined by first and second delimitations, and secondly , comprising a step in which the vehicle is driven in an automated manner in a so-called relative mode consisting of following it on the taxiway a trajectory, relative to the width of the taxiway, with respect to a median line situated at equal distance of the first and second boundaries.
- the vehicle If detection of a next subdivision of the taxiway in at least two parts, the vehicle is automatically driven in an absolute mode said to follow a path located at a selected distance from one of the first and second delimitations, then, when the vehicle is placed on one of these parts, it is again conducted in the relative mode, and
- the vehicle is driven in the absolute mode, then, when the vehicle is placed on the track of circulation after this fusion, it is conducted again in the relative mode.
- the trajectory of the vehicle is automatically adapted so that it does not leave its line as soon as a zone of subdivision or melting of its lane is detected in the images of its environment (acquired by means image acquisition), without his driver having to intervene on the steering wheel.
- the assistance method according to the invention may include other features that can be taken separately or in combination, and in particular:
- the vehicle can be followed by a trajectory located at a selected distance from the delimitation, from among the first and second delimitations, which is either to the right of the lane in the case of a traffic lane suitable for vehicles with a left-hand drive, or to the left of the lane in the case of a traffic lane suitable for vehicles with a right-hand drive.
- the vehicle may be tracked at a selected distance from the boundary that is closest to it at the time of detection;
- the invention also proposes a device, on the one hand, intended to assist a driver of a clean vehicle to be driven in an automated manner on a traffic lane defined by first and second delimitations, and, on the other hand, comprising control means which control an automated driving of the vehicle in a so-called relative mode of following it on the taxiway a path, relative to the width of the taxiway, with respect to a median line equidistant from the first and second delimitations.
- control means In case of detection of a next subdivision of the taxiway in at least two parts, its control means control the driving of the vehicle in an absolute mode of following him to a course located at a selected distance of one of the first and second delimitations, then, when the vehicle is placed on one of the parts, its control means again control the driving of the vehicle in the relative mode, and
- the assistance device according to the invention may comprise other features that can be taken separately or in combination, and in particular:
- its control means can control the driving of the vehicle so that it follows a path located at a selected distance from the delimitation, among the first and second delimitations, which is either located on its right in the case of a traffic lane suitable for vehicles with a left-hand drive is located to the left of the lane in the case of a lane suitable for right-hand drive vehicles.
- its control means can control the driving of the vehicle to follow a path located at a selected distance from the delimitation that is closest to him at the time of detection;
- its control means can determine successive instructions from a vehicle direction control automaton, intended to follow the trajectory by the latter, as a function of successive real positions of the vehicle with respect to the taxiway.
- the invention also proposes a vehicle, possibly of automotive type, adapted to be driven in an automated manner on a traffic lane defined by first and second boundaries, and comprising an assistance device of the type of that presented above.
- the object of the invention is in particular to propose an assistance method, and an associated assistance device DA, intended to assist a driver of an automated driving vehicle VA to drive the latter (VA) on a VC traffic lane. which is subdivided into at least two adjacent parts Pj or whose neighboring parts Pj merge.
- automated driving vehicle is intended to mean a vehicle that can be driven in an automated manner (partial or total (without the intervention of its driver)) during an automated driving phase, under control (partial or total ) of an assistance device, and possibly manually (and therefore under the sole control of its driver) during a manual driving phase.
- the vehicle VA is automotive type. This is for example a car. But the invention is not limited to this type of vehicle. It concerns indeed any type of automated driving vehicle that can circulate on terrestrial traffic lanes defined by two delimitations.
- This VC circulation path is defined by first d1 and second d2 delimitations. It is subdivided here, from a given place, into two parts P1 and P2 which are separated by an intermediate delimitation di.
- the first part P1 is thus defined by the first delimitation d1 and the intermediate delimitation di
- the second part P2 is defined by the second delimitation d2 and the intermediate delimitation di. It is conceivable that at another given place, distant from that shown, the two parts Pj merge.
- the taxiway VC could be subdivided into more than two neighboring parts Pj, for example three or four.
- the path of VC circulation could comprise more than two neighboring parts Pj, for example three or four, which merge.
- the vehicle VA being automated driving, it comprises in particular a VV flywheel, image acquisition means of the environment MA and a DA assistance device according to the invention.
- the VV flywheel is secured to a steering column, to allow the driver to control by exerting on her a couple vce with at least one of his hands.
- This steering column is coupled to a steering control automaton (not shown) controllable by the assistance device DA by means of a setpoint, for example of assistance torque.
- This assistance device DA comprises control means MC which are responsible, at least, to control the automated driving of the vehicle VA in an absolute mode or in a so-called relative mode depending on whether it is in an area where the track of circulation VC it borrows will be subdivided into parts Pj or parts Pj that will merge or in a portion (or part Pj) of a taxiway VC which should not very soon be subdivided or merge, as we will see later.
- the relative mode consists in forwarding to the vehicle VA on the taxiway VC a trajectory tv1 (or tv3), relative to the width of the taxiway, with respect to a median line (imaginary) Im located equidistant from the first d1 and second d2 boundaries.
- This trajectory relative to the width of the taxiway VC, is more or less spaced from a deviation D of this median line Im according to the driver's wishes.
- the assistance device DA is implanted in a CA computer of the vehicle VA which can possibly provide at least one other function. But he (DA) could understand a calculator. Therefore, a DA assistance device can be realized in the form of software modules (or computer or "software”), or circuits or electrical or electronic components (or “hardware”), or a combination of electrical or electronic circuits or components and software modules. Note also that the DA assistance device is, for example, what the skilled person calls an ADAS device ("Advanced Driver Assistance System” - assistance system (or help) to advanced driving ).
- ADAS device Advanced Driver Assistance System
- - assistance system or help
- the invention provides an assistance method intended, in particular, to assist the driver of the vehicle VA to drive the latter (VA), and at least for the control of its trajectory tvk.
- An assistance method comprises a step in which the vehicle VA is automatically driven in the absolute mode when it is detected that it circulates in an area where a subdivision or a merger takes place, and in the relative mode when it is detected that it circulates in an area where subdivision or fusion does not take place. It will be understood that this is controlled by the control means MC.
- the vehicle VA is automatically driven in the absolute mode, and then, when the vehicle VA is placed on one of the of these parts Pj, it is conducted again in the relative mode.
- the vehicle VA is driven into the absolute mode, and then, when the VA vehicle is placed on the taxiway VC after this merger, it is conducted again in the relative mode.
- the driving in the mode relating to driving in the absolute mode (instant following t3, not shown in the single figure). Then, when the vehicle VA is driven in the relative mode under the control of the control means MC and that it is detected that it has arrived in the merged VC lane, it passes from the driving in the mode relative to the driving in the absolute mode.
- the VC circulation lane is adapted to vehicles having a left-hand drive, and therefore the chosen distance of the distance between the tv2 trajectory of the vehicle VA and the vehicle first delimitation d1 (here the one on the right). But if the taxiway VC was adapted to vehicles with a right-hand drive, the chosen distance would be that which separates its trajectory tv2 from the second delimitation d2 (here the left one).
- the vehicle VA is preferably followed by a trajectory located at a selected distance d1 from the delimitation, from among the first d1 and second d2 delimitations, which is either located to its right in the case of A VC lane suitable for left-hand drive vehicles is located to the left of the lane in the case of a VC lane suitable for right-hand drive vehicles. It is also possible to have an independence with respect to the type of driving (right or left), and in this case the delimitation d1 or d2 retained in the absolute mode is the one which is the closest to the vehicle VA at the time of detection (and therefore just before the absolute mode is initiated).
- the trajectory of the vehicle VA is thus automatically adapted so that it does not leave its line as soon as a zone of subdivision or melting of its taxiway VC is detected in the images of its environment (on the side of its front part) .
- the images of the front environment of the vehicle VA are acquired by image acquisition means MA which are embedded in the latter (VA). They include, for example, at least one digital camera facing the front of the vehicle VA. Each image is then analyzed by means of environmental analysis in order to detect (for example by shape recognition) the first d1 and second d2 delimitations and possible (s) delimitation (s) intermediate (s) di of the portion taxiway VC which is located in front of the vehicle VA, and the actual position of the latter (VA) with respect to the detected boundaries.
- These means for analyzing the environment may possibly be part of the assistance device DA, but this is not mandatory.
- the boundaries and real positions of the vehicle VA in the acquired images can also be responsible for detecting other environmental information that the boundaries and real positions of the vehicle VA in the acquired images, and in this case, they only provide the control means MC information they need (positions delimitations d1, d2 and di and actual position of the vehicle VA).
- the boundaries can be modeled by mathematical polynomials, with a reference point of the vehicle VA.
- a next subdivision of the VC circulation lane when the latter (VC) gradually widens and appears at least an intermediate boundary di between its first d1 and second d2 delimitations. It will be understood that the widening corresponds to a gradual increase in the distance separating the first d1 and second d2 delimitations locally. Detection of this enlargement can be carried out by the control means MC from the above information provided in real time by the environment analysis means. Also, for example, in the process step, a next merge of the portions Pj of the VC circulation lane can be detected when an intermediate delimit di, which defines a portion Pj with one of the first d1 and second d2 delimitations, s interrupts. This abrupt interruption of the intermediate delimitation di is interpreted as a sudden widening of the taxiway VC. The detection of this sudden enlargement can be carried out by the control means MC from the above information provided in real time by the environment analysis means.
- control means MC can determine successive instructions of the control automaton of the direction of the vehicle VA intended to make follow the path by the latter (VA), according to the actual real positions of the vehicle VA with respect to the taxiway VC (provided in real time by means of environmental analysis).
- VA the control automaton of the direction of the vehicle VA intended to make follow the path by the latter
- Each setpoint can, for example, be determined as follows.
- the control means MC can firstly determine a reference angle that the VV steering wheel should take for the vehicle VA to follow the trajectory tvk determined, according to the information representative of the vehicle VA and its environment. Then, the control means MC may, for example, determine an assist torque that the direction control automaton must produce, according to the current steering wheel angle (measured by a sensor coupled to the steering column). ) and the reference angle they have just determined. This assistance torque depends on a possible torque applied by the driver on the steering wheel VV, and therefore the angle of the steering wheel. Finally, the control means MC generates a setpoint representative of this assist torque, destined for the direction control automaton.
- the invention makes it possible to offer a continuity of the assistance to the control of trajectory (and in particular a correctness of the guidance), which avoids the driver having to take back his vehicle in hand, without consequence on the cost of the vehicle and not requiring not use of map information or digital maps.
Landscapes
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Traffic Control Systems (AREA)
- Control Of Driving Devices And Active Controlling Of Vehicle (AREA)
- Steering Control In Accordance With Driving Conditions (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1761144A FR3074125B1 (fr) | 2017-11-24 | 2017-11-24 | Procede et dispositif d’assistance a la conduite automatisee d’un vehicule en cas de subdivision en parties ou de fusion de parties de la voie de circulation |
| PCT/FR2018/052805 WO2019102100A1 (fr) | 2017-11-24 | 2018-11-12 | Procédé et dispositif d'assistance à la conduite automatisée d'un véhicule en cas de subdivision en parties ou de fusion de parties de la voie de circulation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3713803A1 true EP3713803A1 (fr) | 2020-09-30 |
Family
ID=60923765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP18819181.1A Withdrawn EP3713803A1 (fr) | 2017-11-24 | 2018-11-12 | Procédé et dispositif d'assistance à la conduite automatisée d'un véhicule en cas de subdivision en parties ou de fusion de parties de la voie de circulation |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3713803A1 (fr) |
| FR (1) | FR3074125B1 (fr) |
| WO (1) | WO2019102100A1 (fr) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017082290A1 (fr) * | 2015-11-12 | 2017-05-18 | マツダ株式会社 | Dispositif de commande de maintien de voie |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006047636A1 (de) * | 2006-10-09 | 2008-04-10 | Robert Bosch Gmbh | Verfahren für die Steuerung eines Fahrerassistenzsystems |
| JP5124875B2 (ja) * | 2008-03-12 | 2013-01-23 | 本田技研工業株式会社 | 車両走行支援装置、車両、車両走行支援プログラム |
| JP5739460B2 (ja) * | 2013-02-14 | 2015-06-24 | 本田技研工業株式会社 | 車両の走行支援装置 |
| JP6134276B2 (ja) * | 2014-03-03 | 2017-05-24 | 株式会社Soken | 走行区画線認識装置 |
| US9830517B2 (en) * | 2014-06-19 | 2017-11-28 | Toyota Motor Engineering & Manufacturing North America, Inc. | Road branch detection and path selection for lane centering |
| JP6344275B2 (ja) | 2015-03-18 | 2018-06-20 | トヨタ自動車株式会社 | 車両制御装置 |
| JP6465730B2 (ja) * | 2015-04-21 | 2019-02-06 | アルパイン株式会社 | 電子装置、走行車線識別システムおよび走行車線識別方法 |
-
2017
- 2017-11-24 FR FR1761144A patent/FR3074125B1/fr active Active
-
2018
- 2018-11-12 EP EP18819181.1A patent/EP3713803A1/fr not_active Withdrawn
- 2018-11-12 WO PCT/FR2018/052805 patent/WO2019102100A1/fr not_active Ceased
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017082290A1 (fr) * | 2015-11-12 | 2017-05-18 | マツダ株式会社 | Dispositif de commande de maintien de voie |
Also Published As
| Publication number | Publication date |
|---|---|
| FR3074125A1 (fr) | 2019-05-31 |
| WO2019102100A1 (fr) | 2019-05-31 |
| FR3074125B1 (fr) | 2021-06-04 |
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