EP4111436A1 - Optimisation du franchissement d'un système de signalisation par un égo-véhicule - Google Patents
Optimisation du franchissement d'un système de signalisation par un égo-véhiculeInfo
- Publication number
- EP4111436A1 EP4111436A1 EP21705239.8A EP21705239A EP4111436A1 EP 4111436 A1 EP4111436 A1 EP 4111436A1 EP 21705239 A EP21705239 A EP 21705239A EP 4111436 A1 EP4111436 A1 EP 4111436A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- vehicle
- ego
- traffic
- signaling system
- traffic lane
- 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- Withdrawn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
- 230000011664 signaling Effects 0.000 title claims abstract description 81
- 238000000034 method Methods 0.000 claims abstract description 36
- 230000001105 regulatory effect Effects 0.000 claims description 13
- 230000006978 adaptation Effects 0.000 claims description 11
- 230000001133 acceleration Effects 0.000 claims description 10
- 238000004891 communication Methods 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 6
- 238000005457 optimization Methods 0.000 claims description 3
- 238000004590 computer program Methods 0.000 claims description 2
- 230000006870 function Effects 0.000 description 11
- 230000015654 memory Effects 0.000 description 10
- 238000004364 calculation method Methods 0.000 description 4
- 230000001413 cellular effect Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000012806 monitoring device Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000029305 taxis Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/07—Controlling traffic signals
- G08G1/08—Controlling traffic signals according to detected number or speed of vehicles
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/07—Controlling traffic signals
- G08G1/087—Override of traffic control, e.g. by signal transmitted by an emergency vehicle
Definitions
- the present invention belongs to the field of controlling the autonomous driving of a vehicle. It relates in particular to a method and a device for optimizing the crossing by a vehicle of a road signaling system, in particular traffic lights, for example multicolored.
- the signaling system is able to regulate traffic on a second traffic lane from which other vehicles can cross or temporarily take the first one. traffic way. It improves the safety of all vehicles in this type of situation.
- vehicle any type of vehicle such as a motor vehicle, a moped, a motorcycle, a storage robot in a warehouse, etc.
- autonomous driving of an “autonomous vehicle” is meant any process capable of assisting the driving of the vehicle.
- the method can thus consist in partially or totally steering the vehicle or in providing any type of assistance to a natural person driving the vehicle.
- the process thus covers all autonomous driving, from level 0 to level 5 in the OICA scale, for the International Organization of Automobile Manufacturers.
- autonomous vehicle is used to designate the vehicle whose autonomous driving is determined.
- the term “road” is understood to mean any means of communication involving a physical movement of a vehicle.
- a national, departmental, local, European, international road, a national, European, international highway, a forest path, a route for autonomous storage devices of a storage warehouse, etc. are examples of routes.
- the road includes at least one carriageway.
- the term “roadway” is understood to mean any physical means capable of withstanding the movement of a vehicle.
- a highway typically comprises two carriageways separated by a central reservation.
- the roadway includes at least one lane.
- lane is understood to mean any portion of the roadway assigned to a line of vehicles.
- a highway carriageway typically has at least two lanes of traffic.
- a motorway insertion lane, a single lane in a tunnel, a one-way traffic lane located in a city, etc. are examples of ways.
- a lane can be delimited by markings on the ground but it can also correspond to a path on the roadway taken by vehicles traveling on the roadway.
- Such a lane can be called a "virtual lane” because this lane is not delimited by physical markings but is generated from past paths taken by vehicles traveling on the roadway.
- patent application DE102010052702 is to reduce the number of vehicle stops in front of traffic lights, with the overall aim of reducing the journey time of all the vehicles concerned. To this end, traffic data is received from the vehicles and the traffic conditions are processed in order to control the traffic lights for the aforementioned purpose.
- the aforementioned patent application does not specify the parameters taken into account by the signaling system and / or by the vehicles, nor the control law which uses these parameters. Furthermore, the aforementioned patent application proposes that a centralized control unit at the level of the signaling system optimizes the signaling as a function of the data sent from motor vehicles, which imposes a certain latency at the level of the signaling system. The present invention improves the situation.
- a first aspect of the invention relates to a method for optimizing the crossing of a signaling system by a vehicle comprising an autonomous control device, the vehicle being called an ego-vehicle and traveling on a first lane. traffic, the method being implemented by the e-vehicle and comprising the following operations:
- the e-vehicle which determines the traffic conditions and which generates a signaling adaptation command only if the latter can be used by the regulation system, which reduces the traffic. latency of the control system.
- the e-vehicle when crossing and when it generates an adaptation command, only blocks the adjacent lanes for a limited time provided by the threshold value eshoid, which avoids generating congestion on the second lane. traffic.
- the determination of the crossing time tf may depend on the determination of the presence or absence of another vehicle on the first traffic lane.
- the crossing time can be adapted in order to take into account any deceleration required by the presence of another vehicle, which improves the precision of the method according to the invention.
- the crossing time tf can be determined as being equal to the ratio of the distance df and the speed Vo of the ego-vehicle.
- the calculation of the crossing time tf is therefore obtained directly from data which can be picked up by the vehicle or received by a communication interface (GPS or cellular, for example).
- the crossing time tf can also be determined as a function of an acceleration gi for regulating the speed of the e-vehicle.
- the acceleration gi being determined as a function of a distance dtar between the ego-vehicle and the other vehicle, and of the relative speed V r between the speed Vo the ego-vehicle and a speed Vt ar the other vehicle.
- the accuracy of the crossing time tf is improved, especially when the speed is corrected by the need to decelerate due to another vehicle in the first lane.
- crossing time tf can be determined as being the smallest positive root of the polynomial:
- the method may further comprise:
- the crossing time t f is determined as a function of an acceleration gi for regulating the speed of the ego-vehicle, the acceleration being determined gi as a function of a distance dtar between the ego-vehicle and the other vehicle, and the relative speed V r between the ego-vehicle and the other vehicle.
- the command may require the temporary passage to red light of a signaling entity of the signaling system, located on the second signaling channel.
- the method can further comprise the comparison of the crossing time tf with a minimum value Un, and the adaptation command is generated only if the crossing time tf is between the minimum value Un and the value threshold Ueshoid-
- the minimum value Un can be the result of a regulatory constraint, for example the duration of an amber light, typically 3 to 5 seconds.
- a third aspect of the invention relates to an autonomous vehicle control device, called ego-vehicle, optimization of the crossing of a control system.
- signaling by an autonomous vehicle, called ego-vehicle able to circulate on a first traffic lane, the signaling system being at least able to regulate traffic on a second traffic lane from which other vehicles can cross or partially take the first taxiway, the device comprising a processor configured to
- the system detects, on the basis of the data collected, the signaling system to be crossed on the first traffic lane, and a second traffic lane from which other vehicles may cross or partially take the first traffic lane, the system signaling being at least able to regulate traffic on the second traffic lane;
- ° determine the time of passage tf of the signaling system by the ego vehicle, at least as a function of a speed Vo of the ego-vehicle and a distance df between the e-vehicle and the signaling system ;
- a fourth aspect of the invention relates to a vehicle comprising the device according to claim 9, one or more sensors for acquiring data and a communication interface configured to transmit the command to the crossing system.
- FIG 1 illustrates a driving situation according to one embodiment of the invention
- FIG 2 is a diagram illustrating the steps of a method according to one embodiment of the invention.
- FIG 3 illustrates a first configuration in which the method according to the invention can be implemented, according to one embodiment of the invention
- FIG 4 illustrates a second configuration in which the method according to the invention can be implemented, according to one embodiment of the invention
- FIG 5 illustrates the structure of a control device according to one embodiment of the invention.
- Figure 1 shows a system according to one embodiment of the invention.
- the system comprises an ego-vehicle 100 comprising in particular: one or more sensors 110;
- the system further includes a signaling system 120 comprising one or more signaling entities.
- Each signaling entity can be, for example a multicolored light, such as a traffic light for example.
- the signaling system 120 is able to regulate the circulation of vehicles between several traffic lanes, in particular between a first traffic lane on which the e-vehicle 100 circulates and a second traffic lane.
- the signaling system 120 comprises at least one signaling entity capable of regulating the movement of vehicles engaged on the second traffic lane.
- the signaling system 120 can include another signaling entity capable of regulating the movement of vehicles engaged on the first traffic lane on which the e-vehicle 100 is traveling.
- the ego-vehicle 100 may include any visual technology (camera, of the multifunction video camera type, CVM, and image processing system), a radar system / lidar, or an ultrasound sensor for example, or any combination of such technologies.
- a combination of different technologies can be used to perform additional functions (vehicle detection on the one hand, evaluation of the distance with this vehicle on the other hand) and / or redundant (double determination of the distance with a vehicle).
- the e-vehicle 100 can include a camera in conjunction with an image processing system and a lidar, which can be used for additional and / or redundant functions.
- Interface 112 is configured to receive information from at least one other vehicle, infrastructure such as signaling system 120, user terminal, etc., and to transmit data to such entities.
- FIG. 2 is a diagram illustrating the steps of a method according to one embodiment of the invention.
- control device 111 receives, continuously or alternately at a fixed or variable frequency, data acquired by the device. or the sensors 110 and / or data acquired via the communication interface 112, for example by a satellite or cellular channel, or by any other wireless technology making it possible to transmit data.
- the control device 111 detects the presence of a configuration in which a crossing of a signaling system 120 regulating traffic between a first traffic lane (on which the e-vehicle 100 is traveling) and a second traffic lane, is to be provided for the e-vehicle 100.
- the control device detects the presence of the signaling system 120. No restriction is attached to the detection of the configuration which may be based on sensor data or data obtained by a communication channel, for example satellite (GPS) or cellular (3G, 4G, 5G or subsequent generations).
- the control device 111 can further acquire, from the raw data, the speed Vo of the e-vehicle, the distance df between the e-vehicle 100 and the signaling system 120, and the speed of other vehicles. on the same traffic lane or on other traffic lanes. In a step 202, the control device 111 determines whether another vehicle 130 is present on the first traffic lane.
- the device 111 determines a crossing time tf necessary to cross the signaling system 120.
- the crossing time tf is obtained by the formula next :
- control device 111 determines in step 204:
- Vt ar is the vehicle speed 130 obtained from the sensor data 110;
- a distance dtar between the e-vehicle 100 and the vehicle 130 obtained from the sensor data 110; an acceleration gi to regulate the speed of the ego-vehicle 100, as a function of the distance dtar and of the relative speed V r .
- Steps 205 and 206 described below are optional. Alternatively, only step 207 is implemented.
- the control device 111 determines a distance d s to P for stopping the ego vehicle 100 and compares it to the distance d r between the ego vehicle 100 and the signaling system 120.
- the distance d s to P is obtained from the following calculations:
- dsto P is less than or equal to d r , this means that the e-vehicle 100 will stop before the signaling system 120 and the control device 111 sets the crossing time tf to an infinite value, at a step 206. If dstop is greater than d r , the method goes to step 207.
- step 207 the control device 111 determines the crossing time tf of the signaling system 120 as a function in particular of the acceleration gi.
- condition 1 is satisfied and therefore, equation 1 has two real roots.
- the control device 111 selects the smallest of the positive roots of equation 1.
- the control device 111 can verify that this crossing time does not induce not a negative final speed Vf at the ego-vehicle 100.
- Vf VQ + Yitf 3 0
- step 208 the control device compares the crossing time tf with a predetermined threshold value shoid.
- the control device 111 In the case where the crossing time tf is less than the predetermined threshold value tthreshoid j the control device 111 generates a signaling adaptation command in a step 209 for the signaling system 120, the command having for object to require the regulation of the traffic on the second lane (passage to the red light in particular) in order to ensure the crossing of the e-vehicle 100 without risk.
- the command is transmitted to the signaling system 120 via the interface 112.
- the signaling system 120 can control, in addition to signaling on the second traffic lane, the change to green on the first traffic lane, for a period longer than the determined crossing time tf.
- a signaling entity a traffic light for example
- the method is directly completed in a step 210 without sending a command to the signaling system 120, and the signaling system thus retains its nominal operation, without being disturbed by the e-vehicle 100.
- the control device 111 can verify that the crossing time tf is greater than a predefined minimum value n allowing the signaling system 120 to display a transition color (orange light) for a period of time. predefined duration (typically of the order of 3 to 5 seconds). Step 209 is thus implemented only if the crossing time tf is between the minimum predefined value and the threshold value eshoid.
- the method, and in particular steps 202 to 210 can be repeated several times when approaching the signaling system 120, so as to possibly find a window of opportunity for the generation of an adaptation command of the signal. signage.
- Figure 3 illustrates a first configuration according to a first embodiment of the invention.
- a road (direction of travel from left to right in the figure) comprises a first traffic lane 301, on which a self-vehicle 100 can circulate, and a second traffic lane 302.
- the first configuration further comprises a signaling system, capable of regulating traffic on the second traffic lane 302 (or on the first traffic lane 301 and on the second traffic lane 302).
- the road After passing through the signaling system, the road includes an additional lane 303 which can be taken by vehicles from the other two lanes 301 and 302. Thus, a vehicle passing from the second lane 302 to the third lane 303 partially borrows , or crosses, the first traffic lane 301.
- Such a first configuration can occur in the case of a drop-off, in front of a station or an airport for example.
- the first taxiway 301 can be dedicated professional vehicles (taxis, buses, for example) and ego-vehicles, while the second traffic lane 302 can be dedicated to private (non-autonomous) vehicles.
- Third lane 303 may be an escape route, so that a vehicle can exit one of the lanes of lanes 301 and 302 on which it is traveling.
- the ego vehicle 100 traveling on the first traffic lane 301 can trigger the regulation of the second traffic lane 302 (for example by initiating a red light).
- Figure 4 illustrates a second configuration according to a second embodiment of the invention.
- two roads intersect and a signaling system 120 comprising several signaling entities 120a, 120b, 120c and 120d are in charge of regulating traffic on the four lanes 311, 312, 312 and 314 of the two roads.
- the e-vehicle 100 When the e-vehicle 100 is traveling on the first traffic lane 311, it can trigger, in accordance with the method described above, the passage at red light of at least some of the signaling entities 120b, 120c and 120d.
- FIG. 5 illustrates the structure of a control device 111 according to one embodiment of the invention.
- the control device 111 comprises a processor 402 configured to communicate unidirectionally or bidirectionally, via one or more buses, with a memory 403 such as a “Random Access Memory” type memory, RAM, or a memory of the “Random Access Memory” type. "Read Only Memory”, ROM, or any other type of memory (Flash, EEPROM, etc.).
- the memory 403 comprises several memories of the aforementioned types.
- the memory 403 is able to store, permanently or temporarily, at least some of the data used and / or resulting from the implementation of the method according to the invention.
- the memory 403 is capable of storing data specific to the ego-vehicles, the instructions to be executed, and the data acquired from the sensor (s) 110.
- the processor 402 is able to execute instructions, stored in the memory 403, for the implementation of the steps of the method according to the invention, illustrated with reference to FIG. 2.
- the processor 402 can be replaced by a microcontroller designed and configured to perform the operations of Figure 2.
- the control device 111 may further comprise an input interface 400 and an output interface 401 in order to communicate with other elements of the e-vehicle 100.
- the input interface 400 is capable of receive the sensor data 110 and the output interface 402 is able to transmit commands to the output interface 401, for transmission to the signaling system 120.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Traffic Control Systems (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2001872A FR3107609B1 (fr) | 2020-02-26 | 2020-02-26 | Optimisation du franchissement d’un système de signalisation par un égo-véhicule |
| PCT/FR2021/050019 WO2021170917A1 (fr) | 2020-02-26 | 2021-01-07 | Optimisation du franchissement d'un système de signalisation par un égo-véhicule |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4111436A1 true EP4111436A1 (fr) | 2023-01-04 |
Family
ID=70918588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21705239.8A Withdrawn EP4111436A1 (fr) | 2020-02-26 | 2021-01-07 | Optimisation du franchissement d'un système de signalisation par un égo-véhicule |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4111436A1 (fr) |
| FR (1) | FR3107609B1 (fr) |
| WO (1) | WO2021170917A1 (fr) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5926113A (en) * | 1995-05-05 | 1999-07-20 | L & H Company, Inc. | Automatic determination of traffic signal preemption using differential GPS |
| US6064319A (en) * | 1998-10-22 | 2000-05-16 | Matta; David M. | Method and system for regulating switching of a traffic light |
| DE102010052702B4 (de) | 2010-11-26 | 2012-07-05 | Audi Ag | Verfahren zur Steuerung einer Lichtsignalanlage und zugehörige Lichtsignalanlage |
-
2020
- 2020-02-26 FR FR2001872A patent/FR3107609B1/fr active Active
-
2021
- 2021-01-07 WO PCT/FR2021/050019 patent/WO2021170917A1/fr not_active Ceased
- 2021-01-07 EP EP21705239.8A patent/EP4111436A1/fr not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021170917A1 (fr) | 2021-09-02 |
| FR3107609A1 (fr) | 2021-08-27 |
| FR3107609B1 (fr) | 2022-01-14 |
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