WO2023170820A1 - 車両制御方法及び車両制御装置 - Google Patents
車両制御方法及び車両制御装置 Download PDFInfo
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- WO2023170820A1 WO2023170820A1 PCT/JP2022/010301 JP2022010301W WO2023170820A1 WO 2023170820 A1 WO2023170820 A1 WO 2023170820A1 JP 2022010301 W JP2022010301 W JP 2022010301W WO 2023170820 A1 WO2023170820 A1 WO 2023170820A1
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- Prior art keywords
- vehicle
- lane
- deceleration
- information
- road
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- 238000000034 method Methods 0.000 title claims description 27
- 230000001133 acceleration Effects 0.000 description 12
- 238000004891 communication Methods 0.000 description 11
- 238000003384 imaging method Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 7
- 230000006870 function Effects 0.000 description 7
- 230000004397 blinking Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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
- 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
- B60W50/08—Interaction between the driver and the control system
- B60W50/10—Interpretation of driver requests or demands
-
- 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
- B60W60/00—Drive control systems specially adapted for autonomous road vehicles
Definitions
- the present invention relates to a vehicle control method and a vehicle control device.
- Patent Document 1 A technique is known in which a deceleration control amount is calculated when the own vehicle travels on a curved road, and the own vehicle is decelerated according to the deceleration control amount (Patent Document 1).
- Patent Document 1 sets a target vehicle speed so that it decreases as the predicted curvature increases based on the predicted curvature of the vehicle lane at a position a predetermined distance ahead of the vehicle's current position, and calculates the vehicle's own vehicle speed from the target vehicle speed. The larger the vehicle speed deviation obtained by subtracting the current vehicle speed, the smaller the base deceleration control amount is corrected to calculate the deceleration control amount.
- Patent Document 1 For example, in a situation where the own lane in which the own vehicle is traveling is branching and the planned driving route of the own vehicle is set to the own lane, the driver does not necessarily drive according to the planned driving route.
- the technique disclosed in Patent Document 1 is not a technique for acquiring information indicating the driver's intention as to whether or not to travel along the planned travel route in such a situation. Therefore, the technology of Patent Document 1 cannot control the deceleration of the own vehicle according to the driver's intention when there is a road structure in the lane on the branching side that requires deceleration of the own vehicle.
- the problem to be solved by the present invention is when there is a branch lane branching from the own lane in which the own vehicle is traveling, and there is a road structure in the lane on the planned travel route side that requires the own vehicle to decelerate.
- Another object of the present invention is to provide a vehicle control method and a vehicle control device that can decelerate a vehicle according to the driver's intention to travel along a planned travel route.
- road information of the own lane and road information of the branch lane is acquired, and road information of the own lane is acquired.
- the scheduled travel when there is a lane on the branching side that branches off from the own lane in which the own vehicle is traveling, and there is a road structure in the lane on the planned travel route side that requires the own vehicle to decelerate, the scheduled travel The vehicle can be decelerated according to the driver's intention to travel along the route.
- FIG. 1 is a diagram showing an example of the configuration of a vehicle control device according to this embodiment.
- FIG. 2 is a diagram showing an example of a scene in which the vehicle control method according to the present embodiment is executed.
- FIG. 3 is a diagram showing the relationship between allowable deceleration and distance to a branch point according to this embodiment.
- FIG. 4 is a flowchart showing an example of a procedure for executing the vehicle control method according to the present embodiment.
- FIG. 1 is a configuration diagram showing an example of a vehicle system 200 including a vehicle control device 100 according to an embodiment of the present invention.
- the vehicle system 200 of this embodiment is mounted on a vehicle.
- a vehicle system 200 according to the present embodiment includes a surrounding environment sensor group 10, a vehicle sensor group 20, a navigation system 30, a map database 40, an HMI 50, an actuator control device 60, and a vehicle It includes a control actuator group 70, a turn signal 80, and a vehicle control device 100.
- These devices or systems are connected by CAN or other in-vehicle LAN to exchange information with each other.
- the surrounding environment sensor group 10 is a sensor group that detects the surrounding state (external state) of the own vehicle, and is provided in the own vehicle. As shown in FIG. 1, examples of the surrounding environment sensor group 10 include, but are not limited to, a radar 11 and an imaging device 12.
- the radar 11 detects objects existing around the host vehicle.
- Examples of the radar 11 include, but are not limited to, a millimeter wave radar.
- the radar 11 detects the direction in which an object exists and the distance to the object.
- the detection results detected by the radar 11 are output to the vehicle control device 100.
- the radar 11 detects all directions with the own vehicle as the center.
- the radar 11 is provided at the front, side, and rear of the host vehicle, and is configured to detect objects present in front, side, and rear of the host vehicle.
- the imaging device 12 images objects existing around the own vehicle.
- the imaging device 12 include, but are not limited to, a camera equipped with a CCD or CMOS imaging device.
- a captured image captured by the imaging device 12 is output to the vehicle control device 100.
- the imaging device 12 captures images in all directions with the own vehicle at the center.
- the imaging device 12 is provided at the front, side, and rear of the host vehicle, and is configured to detect objects present in front, side, and rear of the host vehicle.
- Objects detected by the surrounding environment sensor group 10 include, for example, bicycles, motorcycles, cars (hereinafter also referred to as other vehicles), road obstacles, traffic lights, road markings (including lane boundaries), and crosswalks. .
- the imaging device 12 also captures an image in which the type of other vehicle, the size of the other vehicle, and the shape of the other vehicle can be identified.
- the radar 11 separates the lane in which the own vehicle is traveling and the lane located to the side of this lane. In addition to detecting the lane boundary line, the distance from the own vehicle to the lane boundary line is also detected. The imaging device 12 also captures an image in which the type of lane boundary line can be identified. Note that when there are lane boundary lines on both sides of the vehicle's own lane, the radar 11 detects the distance from the vehicle to the lane boundary line for each lane boundary line.
- the lane in which the vehicle is traveling is also referred to as the own lane
- the lane located to the side of the own lane is also referred to as an adjacent lane.
- the vehicle sensor group 20 is a sensor group that detects the state (internal state) of the own vehicle. As shown in FIG. 1, the vehicle sensor group 20 includes, for example, a vehicle speed sensor 21, an acceleration sensor 22, a gyro sensor 23, a steering angle sensor 24, an accelerator sensor 25, and a brake sensor 26, but is not limited thereto.
- the vehicle speed sensor 21 measures the rotational speed of a drive system such as a drive shaft, and detects the running speed of the own vehicle based on the measurement results.
- the vehicle speed sensor 21 is provided, for example, on the wheels of the host vehicle or on a drive shaft that rotates together with the wheels.
- Acceleration sensor 22 detects the acceleration of the own vehicle.
- the acceleration sensor 22 includes a longitudinal acceleration sensor that detects the longitudinal acceleration of the own vehicle and a lateral acceleration sensor that detects the lateral acceleration of the own vehicle.
- the gyro sensor 23 detects the rotation speed of the host vehicle, that is, the angular movement amount (angular velocity) of the host vehicle per unit time.
- the steering angle sensor 24 detects the steering angle of the steering wheel.
- the steering angle sensor 24 is provided, for example, on the steering shaft of the host vehicle.
- the accelerator sensor 25 detects the amount of depression of the accelerator pedal (position of the accelerator pedal).
- the accelerator sensor 25 is provided, for example, on a shaft portion of an accelerator pedal.
- the brake sensor 26 detects the amount of depression of the brake pedal (position of the brake pedal).
- the brake sensor 26 is provided, for example, on the shaft portion of the brake pedal.
- the detection results detected by the vehicle sensor group 20 are output to the vehicle control device 100 as vehicle information.
- the detection results include, for example, the vehicle speed, acceleration (including longitudinal acceleration and lateral acceleration), angular velocity, accelerator pedal depression amount, and brake pedal depression amount of the host vehicle.
- the navigation system 30 is a system that guides the occupants (including the driver) of the own vehicle by indicating a planned travel route from the current position of the own vehicle to the destination based on information on the current position of the own vehicle.
- Map information is input to the navigation system 30 from the map database 40, and destination information is input from the occupant of the own vehicle via the HMI 50.
- the navigation system 30 generates a planned travel route for the own vehicle based on this input information. Then, the navigation system 30 outputs information on the planned travel route of the own vehicle to the vehicle control device 100, and also presents information on the planned travel route of the own vehicle to the occupant of the own vehicle via the HMI 50. As a result, the occupant is presented with a planned travel route from the current location to the destination.
- the navigation system 30 includes a GPS 31, a communication device 32, and a navigation controller 33.
- the GPS 31 acquires position information indicating the current position of the own vehicle.
- the GPS 31 acquires position information of the own vehicle by receiving radio waves transmitted from a plurality of satellite communications with a receiver. Furthermore, the GPS 31 can detect changes in the position information of the own vehicle by periodically receiving radio waves transmitted from a plurality of satellite communications.
- the communication device 32 acquires the surrounding situation of the host vehicle from the outside.
- the communication device 32 is, for example, a device that can communicate with a server or system provided outside the vehicle.
- the communication device 32 may communicate with a communication device mounted on another vehicle.
- the communication device 32 acquires road traffic information from a road traffic information communication system (VICS (registered trademark), hereinafter the same) using an information transmitting device (beacon) installed on a road or an FM multiplex broadcast.
- the road traffic information includes, for example, congestion information for each lane, accident information, broken vehicle information, construction information, speed regulation information, lane regulation information, and the like.
- the communication device 32 may acquire information including the position, vehicle speed, and traveling direction of another vehicle from the VICS as the surrounding information of the own vehicle.
- the navigation controller 33 is a computer that generates a planned travel route from the current location of the own vehicle to the destination.
- the navigation controller 33 includes a ROM that stores a program for generating a planned travel route, a CPU that executes the program stored in the ROM, and a RAM that functions as an accessible storage device.
- the navigation controller 33 receives information about the current position of the vehicle from the GPS 31, road traffic information from the communication device 32, map information from the map database 40, and information about the destination of the vehicle from the HMI 50. is input. For example, assume that the occupant of the own vehicle sets the destination of the own vehicle via the HMI 50. The navigation controller 33 creates a lane-by-lane route from the current position to the destination based on the position information of the own vehicle, information on the destination of the own vehicle, map information, and road traffic information. Generate as a planned travel route. The navigation controller 33 outputs the generated planned travel route information to the vehicle control device 100 and presents it to the occupant of the own vehicle via the HMI 50.
- the scheduled travel route of the host vehicle may be any route that allows the host vehicle to reach the destination from the current location, and other conditions are not limited.
- the navigation controller 33 may generate a planned travel route for the own vehicle according to conditions set by the occupant. Further, for example, the navigation controller 33 may generate a planned travel route for the own vehicle based on road traffic information. For example, if a traffic jam occurs in the middle of the shortest route to the destination, the navigation controller 33 searches for a detour route, and selects the route with the shortest travel time from among the multiple searched detour routes. It may also be generated as a route.
- the map database 40 stores map information.
- the map information includes road information.
- Road information is information regarding roads on which vehicles can travel.
- Road information is defined by nodes and links (also referred to as road links) that connect the nodes. Links are identified at lane level.
- the road information includes road structure information and traffic rule information.
- Road structure information includes, for example, road type, road width, road shape, lane curvature, expressway exit, and other road-related information linked to each road link. is not limited to these.
- each road link is associated with, for example, the installation position of a traffic light, the position of an intersection, the direction of approach to the intersection, the type of intersection, and other information regarding the intersection.
- the road information may include information on road structures that require the vehicle to decelerate, such as curved roads and exits to general roads.
- the traffic rule information is traffic rules that a vehicle must comply with when driving.
- Each road link is associated with information about traffic rules for the section defined by the road link.
- traffic rules include, but are not limited to, temporary stopping on a route, prohibition of parking/stopping, slowing down, speed limits, and prohibition of lane changes.
- information that prohibits lane changes is associated with a road link in a lane change prohibited section.
- the traffic rule information may be linked not only to road links but also to nodes or specific points (latitude, route) on the map, for example.
- automatic driving refers to a driving mode other than a driving mode in which the driving main body is only the driver.
- the driving entity includes a controller (not shown) that supports driving operations along with the driver, or when a controller (not shown) that performs driving operations in place of the driver is included, autonomous driving Applies to.
- the vehicle control device 100 according to the present invention can be applied not only to autonomous driving control but also to a navigation system that supports manual driving by a driver.
- autonomous driving control it can be applied not only to autonomously controlling both speed control and steering control, but also to autonomously controlling one of speed control and steering control and manually controlling the other.
- the vehicle system 200 includes the map database 40
- the map database 40 may be provided outside the vehicle system 200.
- the map information may be stored in advance in a portable storage device (eg, external HDD, flash memory).
- a portable storage device eg, external HDD, flash memory.
- the storage device functions as the map database 40.
- the HMI 50 is an interface for outputting and inputting information between the occupant of the own vehicle and the vehicle system 200 (Human Machine Interface, HMI).
- HMI Human Machine Interface
- Examples of the HMI 50 include, but are not limited to, a display that displays text or image information, and a speaker that outputs sounds such as music or voice.
- the exchange of information via the HMI 50 will be explained.
- the navigation system 30 can acquire information about the destination of the own vehicle.
- information on the planned travel route is output from the navigation system 30 to the HMI 50.
- the HMI 50 outputs information about the planned travel route from the display and/or speaker.
- the occupant of the own vehicle is presented with information about the planned travel route to the destination. Examples of the information on the planned travel route to the destination include, but are not limited to, route guidance and the time required to reach the destination.
- execution command information indicating the lane change execution command is output from the HMI 50 to the vehicle control device 100.
- the vehicle control device 100 can start lane change control processing.
- information on the target trajectory is output from the vehicle control device 100 to the HMI 50.
- the HMI 50 then outputs information about the target trajectory from the display and/or speaker.
- the information on the target trajectory for changing lanes is presented to the occupant of the own vehicle. Examples of the information on the target trajectory for changing lanes include, but are not limited to, an entry position specified on an adjacent lane and a target trajectory when changing lanes. Note that the target trajectory and approach position will be described later.
- the H ⁇ I 50 displays and/or Output from the speaker.
- the planned travel lane is the lane on the planned travel route side among the own lane and the branch lane.
- the actuator control device 60 controls the running of the own vehicle.
- the actuator control device 60 includes a steering control mechanism, an accelerator control mechanism, a brake control mechanism, an engine control mechanism, and the like.
- a control signal is input to the actuator control device 60 from a vehicle control device 100, which will be described later.
- Actuator control device 60 realizes automatic driving of the own vehicle by controlling vehicle control actuator group 70 according to control signals from vehicle control device 100. For example, when a control signal for moving the own vehicle from the own lane to an adjacent lane is input to the actuator control device 60, the actuator control device 60 adjusts the steering angle necessary for moving the own vehicle according to the control signal. Calculate the accelerator depression amount or brake depression amount according to the moving speed. Actuator control device 60 outputs the various calculated parameters to vehicle control actuator group 70 .
- each mechanism may be controlled completely automatically, or may be controlled in a manner that supports the driver's driving operations. Control of each mechanism can be interrupted or stopped by an intervention operation by the driver.
- the traveling control method by the actuator control device 60 is not limited to the above-mentioned control method, and other known methods can also be used.
- the vehicle control actuator group 70 is a variety of actuators for driving the own vehicle. As shown in FIG. 1, examples of the vehicle control actuator group 70 include, but are not limited to, a steering actuator 71, an accelerator opening actuator 72, and a brake control actuator 73. Steering actuator 71 controls the steering direction and amount of steering of the vehicle in accordance with signals input from actuator control device 60 .
- the accelerator opening actuator 72 controls the accelerator opening of the host vehicle in accordance with a signal input from the actuator control device 60.
- the brake control actuator 73 controls the braking operation of the brake system of the own vehicle according to a signal input from the actuator control device 60.
- the blinker 80 has a blinking lamp inside, and lights up in orange when the driver of the own vehicle operates a direction indicator switch (not shown).
- the blinker 80 is a device for indicating the direction of the vehicle to the surroundings when turning left or right or changing lanes.
- the blinkers 80 are, for example, integrally provided on the left and right sides of the front end and rear end of the host vehicle.
- a control signal is input to the turn signal 80 from the vehicle control device 100.
- the control signal is a signal for activating the turn signal, and includes a signal that causes the turn signal 80 to flash when it is off (also referred to as a blink signal), and a signal that causes the turn signal 80 to turn off when it is blinking (also referred to as a light-off signal).
- a blinking signal that causes the left blinker to blink is input to the blinker 80
- the blinker 80 lights up the left blinker.
- the turn signal 80 turns off the left turn signal.
- the turn signal 80 is controlled by the vehicle control device 100 in addition to the driver of the own vehicle.
- the vehicle control device 100 of this embodiment is constituted by a computer equipped with hardware and software, and functions as a ROM that stores programs, a CPU that executes the programs stored in this ROM, and an accessible storage device. It is composed of RAM. Note that as the operating circuit, an MPU, DSP, ASIC, FPGA, etc. can be used in place of or in addition to the CPU.
- the control device 101 shown in FIG. 1 corresponds to a CPU (processor).
- the storage device 110 shown in FIG. 1 corresponds to ROM and RAM.
- the control device 101 controls the travel of the own vehicle along the planned travel route generated by the navigation system 30.
- the control device 101 controls the intention of driving in the scheduled travel lane on the planned travel route side when there is a branch lane branching from the own lane on which the own vehicle is traveling in the traveling direction of the own vehicle on the planned travel route. It is determined whether or not driver operation information by the driver of the own vehicle indicating .
- the control device 101 determines that the driver operation information has been acquired, the control device 101 controls the vehicle speed based on the road information of the scheduled travel lane. For example, if there is a road structure in the traveling direction of the host vehicle that requires deceleration of the host vehicle, the control device 101 performs deceleration control of the host vehicle.
- FIG. 2 is a diagram showing an example of a scene in which the vehicle control method according to the present embodiment is executed.
- FIG. 2 is a diagram showing a scene where a branch lane L2 branching from the own lane L1 on which the own vehicle V1 is traveling exists in the traveling direction of the own vehicle V1.
- the branch lane L2 is a lane that branches from the own lane L1 starting from the branch point P1, and is a scheduled travel lane on the planned travel route TR of the host vehicle V1.
- the own lane L1 is a straight road
- the branch lane L2 has a curved road.
- a curved road is a road structure that requires the vehicle to decelerate.
- the target point P2 where the curved road is located is the entrance of the curved road.
- the control device 101 calculates the target vehicle speed at the target point P2, and reduces the vehicle speed of the own vehicle to the target vehicle speed by the time the own vehicle reaches the target point based on the current vehicle speed and the target vehicle speed of the own vehicle V1. Calculate the deceleration of
- the vehicle control method may be executed not only in the scene shown in FIG. 2 but also in other scenes.
- the planned travel route may be set to the own lane.
- the control device 101 performs control to accelerate or decelerate the own vehicle based on the road information of the own lane, regardless of the presence or absence of a branch lane.
- the scene may be such that the branch lane is a straight road.
- the vehicle may be in a situation where the own lane is a highway and a branch lane has an exit to a general road.
- Expressways and local roads have different speed limits, with local roads having lower speed limits than expressways. When your vehicle enters a general road from a highway through a branch lane, it is necessary to reduce your vehicle's speed to the speed limit of the general road. This is the required road structure.
- the control device 101 includes a road information acquisition section 102, an operation information determination section 103, a deceleration determination section 104, and a vehicle speed control section 105 as functional blocks. These blocks implement each function described later by software established in the ROM. Note that in this embodiment, the functions of the control device 101 are divided into four functional blocks and the functions of each functional block are explained, but the functions of the control device 101 do not necessarily need to be divided into four blocks. Instead, it may be divided into three or less functional blocks, or five or more functional blocks.
- the road information acquisition unit 102 acquires road information in the traveling direction of the own vehicle from the map database 40. For example, the road information acquisition unit 102 acquires road information at a point a predetermined distance away from the current position of the host vehicle in the direction of travel of the host vehicle at regular intervals while the host vehicle is traveling. If a branch lane branching from the own lane exists in the traveling direction of the own vehicle on the planned travel route, the road information includes road information of the own lane and road information of the branch lane.
- the road information of the branch lane includes the position of the branch point, the curvature of the curved road, and the position of the entrance of the curved road.
- the position of the branch point may be obtained, for example, as the distance from the current position of the host vehicle to the branch point.
- the road information of the branch lane includes the distance from the branch point to the entrance of the curved road.
- the distance D1 is the distance from the current position of the host vehicle V1 to the branch point P1
- the distance D2 is the distance from the branch point P1 to the entrance of the curved road (target point P2).
- the lane information acquired by the road information acquisition unit 102 includes information about the exit to the general road. Includes location and speed limit on public roads.
- the operation information determination unit 103 determines whether or not driver operation information has been acquired by the driver indicating the intention to travel in the planned travel lane, with the branch lane as the planned travel lane on the planned travel route. That is, if there is a branch lane branching from the vehicle's own lane, the operation information determining unit 103 determines whether the driver intends to drive on the branch lane along the planned travel route.
- the driver operation information is information regarding operations performed by the driver while the own vehicle is running after the planned travel route is set. That is, the driver operation information does not include the driver's operation to input destination information.
- the driver operation information includes consent operation information indicating the driver's consent to travel on a branch lane that is the planned travel route. That is, the consent operation information is information indicating the driver's consent to change lanes to a branch lane.
- the operation information determination unit 103 presents the driver with map information and information on the planned travel route of the own vehicle via the HMI 50, and causes the driver to present information on the option of whether or not to travel on a branch lane.
- the operation information determination unit 103 acquires consent operation information from the HMI 50.
- the driver operation information may be turn signal operation information indicating a turn signal operation by the driver to change lanes to the scheduled driving lane.
- the operation information determination unit 103 presents the driver with map information and information on the planned travel route of the own vehicle via the HMI 50.
- the operation information determination unit 103 determines whether the driver operates the turn signal from the direction switch. Get information.
- the driver operation information is steering control information indicating steering control by the driver to change lanes to the scheduled travel lane.
- the operation information determination unit 103 presents the driver with map information and information on the planned travel route of the own vehicle via the HMI 50.
- the operation information determination unit 103 acquires steering control information.
- the operation information determination unit 103 identifies the positional relationship between the current position of the own vehicle and the lane boundary line based on the captured image captured by the imaging device 12 and the map information in the map database 40, and determines whether the own vehicle is in the own lane.
- Steering control information is acquired when the vehicle straddles a lane boundary line between a branch lane and a branch lane.
- the operation information determination unit 103 determines that driver operation information has been acquired when at least one of consent operation information, blinker operation information, and steering control information has been acquired. For example, the operation information determination unit 103 determines whether the approved operation information has been acquired before the vehicle reaches a predetermined distance from the branch point, or where the vehicle can appropriately change lanes to the branch lane. If turn signal operation information or steering control information is acquired before reaching , it is determined that driver operation information has been acquired.
- the deceleration determination unit 104 determines whether or not there is a road structure in the scheduled travel lane that requires the vehicle to decelerate, based on the road information of the scheduled travel lane. For example, if the branch lane, which is the planned travel lane, has a curved road, the deceleration determining unit 104 determines that the branch lane has a road structure that requires deceleration of the own vehicle. Furthermore, if the branch lane does not have a curved road, the deceleration determining unit 104 determines that there is no road structure in the branch lane that requires the vehicle to decelerate.
- the deceleration determining unit 104 determines that the branch lane has a road structure that requires the vehicle to decelerate. Furthermore, in this embodiment, it is determined whether there is a road structure that requires deceleration of the own vehicle based on whether or not a curved road is included in the road information of the branch lane. For example, the target vehicle speed is calculated from the curvature of the branch lane obtained as the road information of the branch lane, and if the target vehicle speed is smaller than the current vehicle speed of the vehicle, the branch lane is set on a road that requires the vehicle to decelerate. It may also be determined that there is a structure.
- the deceleration determining unit 104 determines whether there is a road structure in the opposite lane that requires deceleration of the host vehicle, based on road information of the opposite lane on the opposite side of the scheduled travel lane.
- the opposite lane is the own lane.
- the deceleration determination unit 104 may reduce the deceleration of the own vehicle in the own lane. Determine whether the required road structure exists. Note that in this embodiment, the determination by the operation information determination unit 103 and the determination by the deceleration determination unit 104 may be processed in parallel, or one of the determinations may be performed first.
- the deceleration determination unit 104 determines whether the vehicle needs to be decelerated in the lane in which the driver intends to drive, depending on whether or not driver operation information has been acquired. It may also be determined whether or not there is a road structure.
- the vehicle speed control unit 105 determines that the driver operation information has been acquired and also determines that there is a road structure in the branching lane that requires the vehicle to decelerate, the vehicle speed control unit 105 Performs deceleration control to reduce the vehicle speed to the target vehicle speed.
- the target point is a point where a road structure that requires deceleration of the host vehicle is located, and is, for example, the entrance of a curved road.
- the vehicle speed control unit 105 calculates deceleration based on the road information of the scheduled travel lane and the vehicle information of the own vehicle, and performs deceleration control of the own vehicle based on the calculated deceleration.
- the vehicle speed control unit 105 determines, as the target point, a point where a road structure that requires deceleration of the own vehicle is located, based on the road information of the branch lane. For example, the vehicle speed control unit 105 determines the point where the entrance of the curved road is located as the target point. Note that when the branch lane has an exit to a general road, the vehicle speed control unit 105 determines the point where the exit to the general road is located as the target point.
- the vehicle speed control unit 105 calculates the target vehicle speed at the target point. For example, the vehicle speed control unit 105 calculates a target vehicle speed according to the curvature of the branch lane at the target point. Vehicle control device 100 stores a map that associates lane curvature with target vehicle speed. The map is set so that the larger the curvature of the lane, the smaller the target vehicle speed. The vehicle speed control unit 105 refers to the map and calculates a target vehicle speed according to the curvature of the branch lane at the target point. Note that if the branch lane has an exit to a general road, the vehicle speed control unit 105 calculates the speed limit on the general road as the target vehicle speed.
- the vehicle speed control unit 105 acquires the current vehicle speed of the host vehicle as vehicle information from the vehicle sensor group 20. Then, the vehicle speed control unit 105 calculates the deceleration based on the current vehicle speed and the target vehicle speed of the host vehicle.
- the deceleration is, for example, the deceleration when it is assumed that the own vehicle decelerates from the current vehicle speed to the target vehicle speed at a constant deceleration.
- the vehicle speed control unit 105 calculates a larger deceleration as the vehicle speed difference between the current vehicle speed and the target vehicle speed of the host vehicle is larger. After calculating the deceleration, the vehicle speed control unit 105 generates a deceleration command to decelerate the host vehicle at the calculated deceleration, and outputs the generated deceleration command to the actuator control device 60.
- the vehicle speed control unit 105 controls the allowable deceleration and the deceleration control based on the distance from the current position of the own vehicle to the branching point of the branching lane, and the distance from the branching point to the target point. It is also possible to set a deceleration start point to start.
- the allowable deceleration is a preset value, and is set, for example, according to the distance from the current position of the own vehicle to the branch point.
- the vehicle speed control unit 105 sets a deceleration start point based on the target vehicle speed, deceleration, and target point. For example, the vehicle speed control unit 105 sets a deceleration start point so that the own vehicle can decelerate to the target vehicle speed based on the deceleration before reaching the target point. Next, if the distance from the deceleration start point to the target point is shorter than the distance from the branch point to the target point, in other words, the deceleration start point is located downstream of the branch point (on the branch lane). If so, set the allowable deceleration to the maximum allowable deceleration.
- the maximum allowable deceleration is the maximum deceleration specified by adaptive cruise control (ACC) control, and is, for example, 0.1G to 0.2G.
- ACC adaptive cruise control
- the vehicle speed control unit 105 controls the vehicle speed control unit 105 to control the vehicle speed control unit 105 if the distance from the deceleration start point to the target point is longer than the distance from the branch point to the target point, that is, if the deceleration start point is located upstream (on the own lane) from the branch point.
- the allowable deceleration is set according to the distance from the current position of the host vehicle to the branch point.
- Vehicle control device 100 stores a map that associates the distance from the current position of the host vehicle to the branch point with allowable deceleration.
- the vehicle speed control unit 105 refers to the map and sets the allowable deceleration according to the distance from the current position of the own vehicle to the branch point.
- FIG. 3 is a diagram showing an example of a map that associates the distance from the current position of the own vehicle to the branch point with the allowable deceleration.
- the map is set such that the longer the distance from the current position of the own vehicle to the branch point, the smaller the allowable deceleration.
- the allowable deceleration is set to the maximum allowable deceleration up to a point a predetermined distance a from the branch point.
- the predetermined distance a is a preset distance, and is, for example, 5 m to 10 m.
- the allowable deceleration is set to the minimum allowable deceleration.
- the predetermined distance b is a preset distance, and is a range close to the branch point to the extent that the flow of traffic on the own lane is not obstructed even if deceleration control is started.
- the minimum allowable deceleration is a preset deceleration, for example, a deceleration equivalent to engine braking.
- the vehicle speed control unit 105 compares the set allowable deceleration with the calculated deceleration and determines whether the deceleration is less than or equal to the allowable deceleration. For example, if the calculated deceleration is less than or equal to the allowable deceleration, the vehicle speed control unit 105 generates a deceleration command to decelerate the host vehicle at the calculated deceleration. For example, if the calculated deceleration is not below the allowable deceleration, the vehicle speed control unit 105 updates the deceleration to the allowable deceleration and issues a deceleration command to decelerate the own vehicle at the updated deceleration. generate.
- the vehicle speed control unit 105 updates the deceleration, it updates the deceleration start point based on the updated deceleration. As described above, the vehicle speed control unit 105 generates a deceleration command to decelerate the vehicle at the calculated deceleration from the deceleration start point, and outputs the generated deceleration command to the actuator control device 60.
- the vehicle speed control unit 105 calculates the deceleration and performs deceleration control of the host vehicle based on the calculated deceleration, but the method of deceleration control is not limited to this.
- the vehicle speed control unit 105 may calculate a target vehicle speed at the target point and perform deceleration control of the host vehicle toward the target vehicle speed.
- the vehicle speed control unit 105 determines that the driver operation information has been acquired and also determines that there is no road structure that requires deceleration of the host vehicle, the vehicle speed control unit 105 determines that the vehicle speed control unit 105 controls the vehicle speed based on the road information of the branch lane. Generates a vehicle speed command to control the vehicle speed. Note that in this embodiment, if it is determined that driver operation information has not been acquired, that is, if the driver does not travel on a branch lane along the planned travel route, the scheduled travel is performed in which the driver travels in the own lane and travels to the destination. A new route is generated, and the planned travel route is updated to the newly generated planned travel route. In such a case, the vehicle speed control unit 105 generates a vehicle speed command for controlling the vehicle speed of the own vehicle based on the road information of the own lane on the newly generated planned travel route.
- the vehicle speed control unit 105 controls the deceleration of the own vehicle. Generates a deceleration command to The method for generating the deceleration command is the same as the method for generating the deceleration command for the branch lane described above. As a result, in this embodiment, if the driver does not intend to drive according to the planned driving route, the deceleration control according to the road information of the planned driving lane will be executed against the driver's intention. It can be prevented.
- the vehicle speed control unit 105 determines that the driver operation information has not been acquired and also determines that there is no road structure in the own lane that requires deceleration of the own vehicle, the vehicle speed control unit 105 acquires the road information of the own lane. Based on this, a vehicle speed command is generated to control the vehicle speed of the own vehicle.
- FIG. 4 is a flowchart showing a control flow for executing the vehicle control method for the host vehicle in the vehicle control device 100.
- the control device 101 starts the control flow from step S1.
- step S1 the control device 101 acquires road information in the traveling direction of the host vehicle from the map database 40.
- the control device 101 acquires road information of the own lane and road information of the branch lane.
- step S2 the control device 101 determines whether there is a branch lane in the direction of travel of the host vehicle. For example, when the control device 101 acquires road information including road information of a branch lane in step S1, it determines that there is a branch lane in the traveling direction of the host vehicle. If there is a branch lane in the traveling direction of the host vehicle, the control device 101 proceeds to step S3. If it is determined that there is no branch lane in the direction in which the host vehicle is traveling, the control device 101 returns to step S1 and repeats the flow below.
- step S3 the control device 101 determines whether or not consent operation information for driving on the branch lane, which is the planned travel lane, has been acquired. For example, the control device 101 presents, via the MHI 50, a planned travel route and an option as to whether or not to consent to driving on a branch lane that is a planned travel lane. For example, when the driver inputs a consent operation, the control device 101 acquires consent operation information. If it is determined that the consent operation information has been acquired, the control device 101 proceeds to step S6. If it is determined that consent operation information has not been acquired, the control device 101 proceeds to step S4.
- step S4 the control device 101 determines whether the distance from the current position of the own vehicle to the branch point is less than or equal to a predetermined distance. If it is determined that the distance from the current position of the own vehicle to the branch point is less than or equal to the predetermined distance, the control device 101 proceeds to step S5. If it is determined that the distance from the current position of the own vehicle to the branch point is not less than the predetermined distance, the control device 101 returns to step S3 and repeats the flow below.
- step S5 the control device 101 determines whether turn signal operation information or steering control information has been acquired. For example, if the driver operates a turn signal or a steering wheel, the control device 101 determines that the turn signal operation information or steering control information has been acquired. If it is determined that the turn signal operation information or the steering control information has been acquired, the control device 101 proceeds to step S6. If it is determined that the turn signal operation information or the steering control information has not been acquired, the control device 101 proceeds to step S11. As described above, when the control device 101 acquires any one of the consent operation information, blinker operation information, and steering control information as the driver operation information, the control device 101 proceeds to step S6 and acquires the consent operation information as the driver operation information. If none of the operation information, turn signal operation information, and steering control information has been acquired, the process advances to step S11.
- step S6 the control device 101 determines whether there is a road structure in the branch lane, which is the planned travel lane, that requires the vehicle to decelerate. If it is determined that there is a road structure in the branch lane that requires the vehicle to decelerate, the control device 101 proceeds to step S7. If it is determined that there is no road structure in the branch lane that requires the vehicle to decelerate, the control device 101 proceeds to step S12.
- step S7 the control device 101 sets the allowable deceleration and the deceleration start point based on the road information of the branch lane. For example, the control device 1 calculates deceleration based on the target vehicle speed calculated from the road information of the branch lane and the vehicle information of the own vehicle and the current vehicle speed of the own vehicle, and calculates the deceleration based on the target vehicle speed, deceleration, and target point. to set the deceleration start position. Further, the control device 101 sets the allowable deceleration based on the road information of the branch lane. In step S8, the control device 101 calculates the deceleration based on the allowable deceleration.
- step S9 the control device 101 generates a deceleration command to decelerate the host vehicle from the deceleration start position at the deceleration calculated in step S9.
- step S10 the control device 101 performs deceleration control of the host vehicle.
- the control device 101 outputs a deceleration command to the actuator control device 60.
- the acceleration/deceleration control of the own vehicle is performed based on the road information of the branch lane, with the condition that driver operation information is acquired. .
- step S11 the control device 101 generates a vehicle speed command based on the road information of the own lane. Further, in step S12, the control device 101 generates a vehicle speed command based on the road information of the branch lane. In step S13, the control device 101 performs vehicle speed control based on the generated vehicle speed command. For example, the control device 101 outputs the generated vehicle speed command to the actuator control device 60. In this embodiment, if the driver intends not to travel along the planned travel route, the control device 101 does not provide road information for the scheduled travel lane, but for the road information for the lane on the opposite side of the planned travel lane. Controls vehicle speed based on road information. Thereby, it is possible to prevent deceleration control from being performed contrary to the driver's intention.
- step S7 determines that driver operation information has been acquired. However, if it is determined that there is no road structure that requires deceleration of the host vehicle, the process may proceed to step S12.
- the control device 101 if it is determined that the driver operation information has not been acquired, and if it is determined that there is a road structure that requires deceleration, the control device 101, in step S11, and perform deceleration control. For example, if it is determined that the driver operation information has not been acquired, and if it is determined that there is no road structure that requires deceleration, the control device 101, in step S11, to control vehicle speed.
- the processor when there is a branch lane branching from the own lane in which the own vehicle is traveling on the planned travel route in the traveling direction of the own vehicle, the processor provides the road information of the own lane and the branch lane. Obtaining road information, determining whether driver operation information by the driver of the own vehicle indicating an intention to travel along the planned travel route with the branch lane as the planned travel lane on the planned travel route has been acquired; Based on the road information of the scheduled driving lane, it is determined whether or not there is a road structure in the scheduled driving lane that requires deceleration of the own vehicle, and it is determined that driver operation information has been acquired, and If it is determined that there is a road structure that requires deceleration of the own vehicle, deceleration control of the own vehicle is performed based on the road information of the scheduled driving lane and the vehicle information of the own vehicle.
- the vehicle will be able to drive on the planned driving route.
- the vehicle can be decelerated according to the driver's intention.
- the processor determines the allowable deceleration and deceleration based on the distance from the current position of the own vehicle to the branching point of the branching lane, and the distance from the branching point to the target point where the road structure is located.
- a deceleration start point at which control is to be started is set, the deceleration of the own vehicle is calculated based on the allowable deceleration, and deceleration control is performed to decelerate the own vehicle at the deceleration from the deceleration start point. This allows the vehicle speed to be more reliably reduced before the vehicle travels on a road structure that requires deceleration.
- the processor also includes, as driver operation information, consent operation information indicating the driver's consent to drive in the scheduled driving lane, or turn signal operation by the driver to change lanes to the scheduled driving lane.
- driver operation information consent operation information indicating the driver's consent to drive in the scheduled driving lane
- turn signal operation by the driver to change lanes to the scheduled driving lane When blinker operation information indicating that the vehicle is to be driven is acquired, it is determined whether or not there is a road structure in the scheduled driving lane that requires deceleration of the host vehicle, based on the road information of the scheduled driving lane. This allows the driver to drive in the lane on the scheduled driving route side when the driver gives consent to drive in the scheduled driving lane or when the driver operates the turn signal on the scheduled driving lane side. It can be determined that there is an intention to do so.
- the processor when the processor acquires steering control information indicating steering control by the driver to change lanes to the scheduled driving lane as the driver operation information, the processor performs steering control information based on the road information of the scheduled driving lane. Then, it is determined whether or not there is a road structure in the scheduled travel lane that requires the vehicle to decelerate. Thereby, when the driver performs steering control toward the planned travel lane, it can be determined that the driver intends to drive in the lane on the planned travel route.
- Vehicle control device 101.
- Control device (processor) 102.Road information acquisition unit 103
- Operation information determination unit 104
- Deceleration determination unit 105
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Abstract
Description
101…制御装置(プロセッサ)
102…道路情報取得部
103…操作情報判定部
104…減速判定部
105…車速制御部
Claims (5)
- プロセッサによって実行される、自車両の現在地から目的地までの予定走行経路に沿って前記自車両の走行を制御する車両制御方法であって、
前記プロセッサは、
前記予定走行経路上において前記自車両が走行する自車線から分岐する分岐車線が前記自車両の進行方向に存在する場合、前記自車線の道路情報及び前記分岐車線の道路情報を取得し、
前記分岐車線を前記予定走行経路上にある予定走行車線として、前記予定走行車線を走行するという意図を示す前記自車両の運転者による運転者操作情報を取得したか否かを判定し、
前記予定走行車線の道路情報に基づいて、前記予定走行車線に、前記自車両の減速を必要とする道路構造があるか否かを判定し、
前記運転者操作情報を取得したと判定し、且つ、前記予定走行車線に、前記自車両の減速を必要とする道路構造があると判定した場合には、前記予定走行車線の道路情報と前記自車両の車両情報とに基づいて、前記自車両の減速制御を行う車両制御方法。 - 前記プロセッサは、
前記自車両の現在位置から前記分岐車線の分岐地点までの距離と、前記分岐地点から前記道路構造が位置する目標地点までの距離とに基づいて、許容減速度と、前記減速制御を開始する減速開始地点とを設定し、
前記許容減速度に基づいて、自車両の減速度を算出し、
前記減速開始地点から前記減速度で前記自車両を減速させる前記減速制御を行う請求項1に記載の車両制御方法。 - 前記プロセッサは、
前記運転者操作情報として、前記予定走行車線を走行することに対する前記運転者の承諾を示す承諾操作情報、又は、前記予定走行車線に車線変更するための前記運転者によるウィンカー操作を示すウィンカー操作情報を取得した場合に、前記予定走行車線の道路情報に基づいて、前記予定走行車線に、前記自車両の減速を必要とする道路構造があるか否かを判定する請求項1又は2に記載の車両制御方法。 - 前記プロセッサは、
前記運転者操作情報として、前記予定走行車線に車線変更するための前記運転者による操舵制御を示す操舵制御情報を取得した場合には、前記予定走行車線の道路情報に基づいて、前記予定走行車線に、前記自車両の減速を必要とする道路構造があるか否かを判定する請求項1~3のいずれか一項に記載の車両制御方法。 - 自車両の現在地から目的地までの予定走行経路に沿って前記自車両の走行を制御するプロセッサを備える車両制御装置であって、
前記プロセッサは、
前記予定走行経路上において前記自車両が走行する自車線から分岐する分岐車線が前記自車両の進行方向に存在する場合、前記自車線の道路情報及び前記分岐車線の道路情報を取得し、
前記分岐車線を前記予定走行経路上にある予定走行車線として、前記予定走行車線を走行するという意図を示す前記自車両の運転者による運転者操作情報を取得したか否かを判定し、
前記予定走行車線の道路情報に基づいて、前記予定走行車線に、前記自車両の減速を必要とする道路構造があるか否かを判定し、
前記運転者操作情報を取得したと判定し、且つ、前記予定走行車線に、前記自車両の減速を必要とする道路構造があると判定した場合には、前記予定走行車線の道路情報と前記自車両の車両情報とに基づいて、前記自車両の減速制御を行う車両制御装置。
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JP2011088574A (ja) * | 2009-10-23 | 2011-05-06 | Toyota Motor Corp | 車両制御装置 |
JP2018203006A (ja) * | 2017-06-02 | 2018-12-27 | 本田技研工業株式会社 | 車両制御システムおよび車両制御方法 |
JP2020069953A (ja) | 2018-11-01 | 2020-05-07 | トヨタ自動車株式会社 | 車両用運転支援装置 |
JP2020185929A (ja) * | 2019-05-15 | 2020-11-19 | 日産自動車株式会社 | 車両の走行制御方法及び走行制御装置 |
JP2022019244A (ja) * | 2020-07-17 | 2022-01-27 | フォルシアクラリオン・エレクトロニクス株式会社 | 運転支援装置およびプログラム |
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JP2011088574A (ja) * | 2009-10-23 | 2011-05-06 | Toyota Motor Corp | 車両制御装置 |
JP2018203006A (ja) * | 2017-06-02 | 2018-12-27 | 本田技研工業株式会社 | 車両制御システムおよび車両制御方法 |
JP2020069953A (ja) | 2018-11-01 | 2020-05-07 | トヨタ自動車株式会社 | 車両用運転支援装置 |
JP2020185929A (ja) * | 2019-05-15 | 2020-11-19 | 日産自動車株式会社 | 車両の走行制御方法及び走行制御装置 |
JP2022019244A (ja) * | 2020-07-17 | 2022-01-27 | フォルシアクラリオン・エレクトロニクス株式会社 | 運転支援装置およびプログラム |
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