WO2022244318A1 - 車両制御システム、車両制御装置及び車両制御方法 - Google Patents
車両制御システム、車両制御装置及び車両制御方法 Download PDFInfo
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- WO2022244318A1 WO2022244318A1 PCT/JP2022/003971 JP2022003971W WO2022244318A1 WO 2022244318 A1 WO2022244318 A1 WO 2022244318A1 JP 2022003971 W JP2022003971 W JP 2022003971W WO 2022244318 A1 WO2022244318 A1 WO 2022244318A1
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000012544 monitoring process Methods 0.000 claims abstract description 51
- 238000001514 detection method Methods 0.000 claims description 10
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- 240000004050 Pentaglottis sempervirens Species 0.000 description 9
- 238000012790 confirmation Methods 0.000 description 7
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- 230000004048 modification Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 210000005252 bulbus oculi Anatomy 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T7/00—Brake-action initiating means
- B60T7/12—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger
- B60T7/22—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger initiated by contact of vehicle, e.g. bumper, with an external object, e.g. another vehicle, or by means of contactless obstacle detectors mounted on the vehicle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T7/00—Brake-action initiating means
- B60T7/12—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T7/00—Brake-action initiating means
- B60T7/12—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger
- B60T7/16—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger operated by remote control, i.e. initiating means not mounted on vehicle
- B60T7/18—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger operated by remote control, i.e. initiating means not mounted on vehicle operated by wayside apparatus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/17—Using electrical or electronic regulation means to control braking
- B60T8/171—Detecting parameters used in the regulation; Measuring values used in the regulation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/17—Using electrical or electronic regulation means to control braking
- B60T8/1755—Brake regulation specially adapted to control the stability of the vehicle, e.g. taking into account yaw rate or transverse acceleration in a curve
- B60T8/17558—Brake regulation specially adapted to control the stability of the vehicle, e.g. taking into account yaw rate or transverse acceleration in a curve specially adapted for collision avoidance or collision mitigation
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/16—Anti-collision systems
- G08G1/166—Anti-collision systems for active traffic, e.g. moving vehicles, pedestrians, bikes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T2201/00—Particular use of vehicle brake systems; Special systems using also the brakes; Special software modules within the brake system controller
- B60T2201/02—Active or adaptive cruise control system; Distance control
- B60T2201/022—Collision avoidance systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T2201/00—Particular use of vehicle brake systems; Special systems using also the brakes; Special software modules within the brake system controller
- B60T2201/06—Hill holder; Start aid systems on inclined road
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T2210/00—Detection or estimation of road or environment conditions; Detection or estimation of road shapes
- B60T2210/30—Environment conditions or position therewithin
- B60T2210/32—Vehicle surroundings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T2220/00—Monitoring, detecting driver behaviour; Signalling thereof; Counteracting thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T2250/00—Monitoring, detecting, estimating vehicle conditions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2540/00—Input parameters relating to occupants
- B60W2540/225—Direction of gaze
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
- G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
- G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
- G01S2013/93185—Controlling the brakes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
- G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
- G01S2013/9327—Sensor installation details
- G01S2013/93271—Sensor installation details in the front of the vehicles
Definitions
- the present invention relates to a vehicle control system, and more particularly to a vehicle control system, a vehicle control device, and a vehicle control method for controlling the brake operating state of the own vehicle.
- the brake hold function maintains the brake ON state when the host vehicle stops due to deceleration by the driver's brake operation regardless of the driving situation, and the brake is turned OFF by the accelerator operation.
- Patent Literature 1 discloses a driving support device that warns the driver when it is determined that the driver is not looking at the blind spot of the oncoming vehicle when the vehicle is turning right at an intersection. .
- Patent Document 1 describes a technique for determining whether or not the driver has directed his/her line of sight to the direction of the blind spot based on the blind spot information obtained from the external world recognition device and the driver sight line information obtained from the driver monitoring means. ing.
- this technology is intended to warn the driver if the driver neglects to confirm safety in the blind spot direction in a situation where the own vehicle is turning right at an intersection, and no consideration is given to the control of the brake operation state. There is no disclosure of a two-stage stop.
- the present invention provides a highly safe vehicle control system, vehicle control device, and vehicle control method that prevent the vehicle from suddenly starting during a two-stage stop.
- a vehicle control system includes an external world recognition unit that recognizes external world information that is information about the surroundings of a vehicle, a driver monitoring unit that detects the line of sight direction of a driver of the vehicle, and Detected by the driver monitoring unit based on the external world information detected by the brake hold unit that maintains the brake of the vehicle in an operated state, the brake hold control unit that controls ON or OFF of the brake hold unit, and the external world recognition unit.
- a driver monitoring condition generation unit for generating a line-of-sight condition of the driver to be controlled, and when the line-of-sight of the driver detected by the driver monitoring unit satisfies the line-of-sight condition, the brake hold control unit controls the brake hold unit is turned off.
- the driver monitoring unit detects the line of sight direction of the driver of the vehicle based on the external world information detected by the external world recognition unit that recognizes the external world information, which is the information around the vehicle.
- a driver monitoring condition generation unit that generates a line-of-sight condition of a driver to be driven; and a brake hold control unit that controls ON or OFF of a brake hold unit that maintains the brake of the vehicle in an operated state, wherein the driver monitoring unit When the line of sight of the driver detected by satisfies the line of sight condition, the brake hold control unit performs control to turn off the brake hold unit.
- the driver monitoring condition generation unit adjusts the line of sight direction of the driver of the vehicle based on the external world information detected by the external world recognition unit that recognizes the external world information, which is the information around the vehicle.
- a line-of-sight condition of the driver to be detected by the driver monitoring unit is generated, and if the line-of-sight of the driver detected by the driver monitoring unit satisfies the generated line-of-sight condition of the driver, the brake hold control unit It is characterized in that control is performed so that a brake hold portion that maintains the state in which the brake is operated is turned off.
- the present invention it is possible to provide a highly safe vehicle control system, vehicle control device, and vehicle control method that prevent the vehicle from suddenly starting in a two-stage stop. Specifically, even in a vehicle equipped with a brake hold function, when a two-stage stop is required, the brake hold function is enabled (ON) or disabled ( OFF) can reliably determine the driver's safety confirmation operation, and realize safe vehicle control that prevents the vehicle from suddenly starting. Problems, configurations, and effects other than those described above will be clarified by the following description of the embodiments.
- FIG. 1 is a functional block diagram showing an example of the overall configuration of a vehicle control system according to one embodiment of the present invention
- FIG. BRIEF DESCRIPTION OF THE DRAWINGS It is a bird's-eye view explaining the vehicle control system based on Example 1 which took the intersection temporary stop as an example. It is a camera sensor image example explaining the vehicle control system which concerns on Example 1 which used the intersection temporary stop as an example. It is a figure explaining a driver's line of sight.
- 4 is a flowchart showing processing operations of a vehicle control device that constitutes the vehicle control system according to the first embodiment
- 1 is a bird's-eye view illustrating a vehicle control system according to a first embodiment, taking a parking scene as an example
- FIG. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a bird's-eye view illustrating a vehicle control system according to a first embodiment, taking a scene of waiting for a right turn at an intersection as an example;
- FIG. 1 is a functional block diagram showing an example of the overall configuration of a vehicle control system according to one embodiment of the invention.
- the vehicle control system 1 is mounted on a vehicle and includes a vehicle information acquisition section 110 , an external world recognition section 120 , a driver monitoring section 130 , a vehicle control device 140 and a brake hold section 150 .
- the vehicle information acquisition unit 110 includes a wheel speed sensor that acquires wheel speed information of the host vehicle, a yaw rate sensor that acquires yaw rate information, and a brake pedal switch that acquires brake pedal depression information. Acquire the summarized vehicle motion information.
- the external world recognition unit 120 uses a camera sensor using an imaging device, a radar sensor using millimeter waves or lasers, or satellite positioning information and map information to determine the relative position, relative speed, and External information such as the type of object (for example, pedestrian, motorcycle, automobile, etc.) is calculated.
- the driver monitoring unit 130 calculates driver line-of-sight information using a camera sensor using an imaging device.
- the vehicle control device 140 is mounted on a general ECU equipped with a CPU and memory (ROM, RAM), and executes various processing programs stored in advance in the memory. Further, the vehicle control device 140 is composed of an external world information estimation section 141 , a two-stage stop determination section 142 , a driver monitoring condition generation section 143 and a brake hold control section 144 .
- the external world information estimation unit 141, the two-stage stop determination unit 142, the driver monitoring condition generation unit 143, and the brake hold control unit 144 include, for example, a processor such as a CPU (not shown), a ROM that stores various programs, and an operation process.
- vehicle control device 140 is not limited to being installed in an ECU, and may be installed in another electronic control system.
- the external world information estimation unit 141 estimates current external world information by inputting past external world information and vehicle motion information stored in a storage unit (not shown).
- the two-step stop determination unit 142 receives the current external world information actually measured by the external world recognition unit 120 or the current external world information estimated by the external world information estimation unit 141, and determines whether or not the own vehicle performs a two-step stop. decision and generate two-stage shutdown information.
- the driver monitoring condition generating unit 143 receives the current external world information actually measured by the external world recognizing unit 120 or the current external world information estimated by the external world information estimating unit 141, and generates a driver sight line condition. Details of the driver line-of-sight condition will be described later.
- the brake hold control unit 144 receives the vehicle motion information obtained from the vehicle information acquisition unit 110, the two-step stop information obtained from the two-step stop determination unit 142, the driver line-of-sight condition obtained from the driver monitoring condition generation unit 143, and the driver monitoring unit 130. and the brake hold function state obtained from the brake hold unit 150 are input, and a brake hold control signal for controlling whether the brake hold function state is enabled (ON) or disabled (OFF) is transmitted to the brake hold unit 150. do.
- the brake hold unit 150 receives the brake hold control signal transmitted from the vehicle control device 140 and sets the brake hold function state. When the brake hold function state is valid (ON), the brake hold unit 150 normally activates the brake hold function and controls ON or OFF of the brake. On the other hand, when the brake hold function state is disabled (OFF), the brake hold unit 150 stops operating the brake hold function.
- the pre-stop bird's-eye view 210 is a bird's-eye view of the surroundings of the host vehicle SV just before the temporary stop.
- the first blind spot edge angle A1 and the second blind spot edge angle A2 are defined by the first blind spot edge E1 and the second blind spot edge E2 from the X axis and the origin in a coordinate system in which the center between the driver's eyes is the origin and the traveling direction is X.
- a camera sensor having a detection range DA is used as an example of the external world recognition unit 120, and external world information is calculated from an imaged travel route image.
- the configuration may be such that external information is calculated using obstacle point group information around the course obtained by a radar sensor, satellite positioning information, and map information.
- information on the curved mirror CM (see FIG. 3) installed near the intersection so that the driver can check the blind spots may be included as the external information.
- the external world recognition unit 120 performs tracking processing for tracking the same information in time series on the calculated external world information, and the processed tracking information is stored in the storage unit (not shown) of the vehicle control device 140 .
- the stopped bird's-eye view 220 is a bird's-eye view of the surroundings of the own vehicle SV while stopped at the stop line.
- the second blind spot edge E2 is out of the detection range DA of the camera sensor forming the external world recognition unit 120 and is lost.
- FIG. 3 shows an example in which this is seen in the captured image of the camera sensor.
- both the first blind spot edge E1 and the second blind spot edge E2 are included in the image.
- the second blind spot edge E2 is out of the stopped camera sensor image 320, the relative position between the host vehicle SV and the second blind spot edge E2 and the second blind spot edge angle A2 cannot be calculated.
- the external world information estimator 141 calculates the estimated position of the second blind spot edge E2 from the value (running distance) and the yaw rate integral value (lateral deviation distance).
- the external world information estimation unit 141 estimates external world information outside the detection range of the external world recognition unit 120 based on the external world information from the external world recognition unit 120 and the vehicle motion information from the vehicle information acquisition unit 110 .
- the estimated position of the second blind spot edge E2 may be obtained by self-position estimation based on superimposition of external world information and map information.
- the external information outside the detection range described above is not limited to the second blind spot edge E2.
- the stop sign SS, the road marking SP, the stop line SL, or the first blind spot edge E1 is lost outside the detection range DA of the camera sensor that constitutes the external world recognition unit 120, these stop signs SS, The road marking SP, the stop line SL, or the first blind spot edge E1 also correspond to the outside world information outside the detection range.
- the driver monitoring condition generation unit 143 generates a blind spot direction range having an allowable angular width around the first blind spot edge angle A1 and the second blind spot edge angle A2, and a gaze time for determining that the driver has gazed at the blind spot. It is generated as a driver line-of-sight condition.
- direct confirmation of the first blind spot edge E1 and the second blind spot edge E2 is assumed, but indirect confirmation by the curved mirror CM (see FIG. 3) is assumed, and the angle in the direction of the curved mirror CM is included in the driver line of sight condition. But it's okay.
- the angle of the monitor direction may be included in the driver line of sight condition. good.
- the horizontal angle to the object is assumed as the main condition, such as the first blind edge angle A1 and the second blind edge angle A2, but the vertical angle may also be included in the condition.
- the driver monitoring unit 130 calculates the driver line of sight angle A3 shown in FIG.
- the driver line-of-sight angle A3 is calculated from the orientation of the driver's head DH and the corneal position of the driver's eyeball DE.
- the driver line of sight condition is generated based on the blind spot edge and the angle of the blind spot edge as in the present embodiment, but at the same time, the confirmation operation in the direction of the good line of sight is also included in the driver sight line condition. Since there is no specific place to look at in a direction in which visibility is good, the predetermined angle range (left direction confirmation range/right direction confirmation range) is used as the driver line of sight condition.
- FIG. 5 is a flow chart showing the processing operation of the vehicle control device 140 that constitutes the vehicle control system 1 according to this embodiment.
- the processing described below is repeatedly executed in the vehicle control device 140 at a predetermined cycle.
- step S510 external world information is acquired from the external world recognition unit 120 constituting the vehicle control system 1, tracking processing is performed to track the same external world information in time series, and the tracking information is stored in the storage unit ( (not shown).
- the external world recognition unit 120 performs tracking processing for tracking the same information in time series for the calculated external world information. will be described as an example.
- step S511 the vehicle motion information described above is acquired from the vehicle information acquisition unit 110.
- step S512 when the external world information estimation unit 141 constituting the vehicle control device 140 compares the current and past tracking information and determines that there is lost external world information (external world information outside the detection range described above). goes to step S513. On the other hand, if it is determined that there is no lost external world information, step S513 is skipped and the process proceeds to step S514.
- the external world information estimation unit 141 constituting the vehicle control device 140 calculates the estimated external world information as described above.
- the external world information to be estimated includes not only blind spot positions such as the second blind spot edge E2, but also stop signs SS, road markings SP and stop lines SL.
- step S ⁇ b>514 the brake hold control section 144 that constitutes the vehicle control device 140 acquires the brake hold function state from the brake hold section 150 .
- step S515 the brake hold control unit 144 constituting the vehicle control device 140 determines whether the brake hold function is valid (ON) or invalid (OFF) from the obtained brake hold function state. If the result of determination is that the brake hold function is valid (ON), the process proceeds to step S516. On the other hand, if the result of determination is that the brake hold function is disabled (OFF), the brake hold unit 150 has already been disabled (OFF) in the previous cycle, and the process proceeds to step S522.
- step S516 the two-step stop determination unit 142 that constitutes the vehicle control device 140 determines whether or not the host vehicle SV is to perform a two-step stop. Specifically, when the stop sign SS or the road marking SP is detected and the blind spot or the like is detected and the intersection is a poor visibility, the distance from the own vehicle SV to the stop line SL is less than or equal to the threshold ( approaching the stop line), it is determined that the own vehicle SV is to stop in two stages, and the process proceeds to step S517. If it is determined that the two-stage stop is not to be performed, the subsequent processing is skipped and the processing flow ends.
- step S517 the driver monitoring condition generation unit 143 that constitutes the vehicle control device 140 generates the driver line-of-sight condition as described above.
- step S ⁇ b>518 the brake hold control unit 144 that constitutes the vehicle control device 140 acquires driver line-of-sight information from the driver monitoring unit 130 .
- step S519 the brake hold control unit 144 that constitutes the vehicle control device 140 determines whether or not the driver line-of-sight information satisfies the driver line-of-sight condition. Specifically, when the cumulative count of cycles in which the driver line-of-sight angle A3 satisfies the blind spot direction range to be watched by the driver becomes equal to or greater than a threshold (gazing time), it is determined that the driver line-of-sight information satisfies the driver line-of-sight condition. and proceed to step S520.
- a threshold gazeing time
- the threshold (gazing time) is, for example, 1 second or 2 seconds. However, it is not limited to this, and the threshold (gazing time) may be set as appropriate.
- a storage unit (not shown) stores a cumulative count of periods in which the driver line-of-sight information satisfies the driver line-of-sight condition.
- step S520 the brake hold control unit 144 constituting the vehicle control device 140 determines whether the brake pedal is currently being pressed by the driver based on the brake pedal depression information included in the vehicle motion information acquired by the vehicle information acquisition unit 110. determine whether or not In step S ⁇ b>521 , the brake hold control unit 144 that constitutes the vehicle control device 140 transmits a brake hold control signal to disable (OFF) the brake hold function state to the brake hold unit 150 .
- step S522 the brake hold control unit 144 that constitutes the vehicle control device 140 determines whether or not the own vehicle SV has passed through the intersection. Specifically, when the distance between the own vehicle SV and the stop line SP starts to increase, it is determined that the intersection has been passed, and the process proceeds to step S523. On the other hand, if the determination result indicates that the own vehicle SV has not passed through the intersection, the processing flow ends.
- the crossing passage determination may be executed based on external world information or vehicle motion information other than the stop line SP.
- brake hold control unit 144 constituting vehicle control device 140 transmits to brake hold unit 150 a brake hold control signal for returning the brake hold function state to valid (ON).
- the vehicle control system 1 can be applied to scenes in which the brake hold function is not required to operate, and is not limited to the above-described embodiment, and includes various modifications. For example, it can be applied to unnecessary operation of the brake hold function when reversing or turning (forward) in a parking scene as shown in FIG.
- the vehicle control device 140 that constitutes the vehicle control system 1 stores the information of the parked vehicles PV on the left and right sides of the parking space in a storage unit (not shown).
- the brake hold function is disabled (OFF) when the vehicle control system 1 determines that the driver is gazing at the direction of the side mirror on the side of the parked vehicle based on the parked vehicle information. and When the vehicle control system 1 judges that the driver is gazing at the blind spot direction of the parked vehicle based on the parked vehicle information, the brake hold function is invalidated (OFF) also at the time of turning (forward).
- the vehicle control system 1 can be applied to the operation of the unnecessary brake hold function in the scene of waiting for a right turn at an intersection as shown in FIG.
- the oncoming right turn waiting vehicle OV cannot confirm whether or not there is an oncoming vehicle going straight ahead, and it is desired to move forward a little to confirm safety, as in the right turn waiting forward bird's eye view 810.
- the blind spot edge E3 of the oncoming vehicle OV waiting to turn right is detected, and when the vehicle control system 1 determines that the driver is watching the direction, the brake hold function is disabled ( OFF).
- the movement of the driver's head DH tilting toward the blind spot or the movement of the driver leaning forward may be detected and utilized.
- the brake hold function is enabled (ON) or disabled ( OFF) can reliably determine the driver's safety confirmation operation, and realize safe vehicle control that prevents the vehicle from suddenly starting.
- braking is performed according to the external world information, the driver's line of sight information, and the like.
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- Traffic Control Systems (AREA)
Abstract
Description
具体的には、ブレーキホールド機能が搭載された車両であっても、二段階停止が必要な場面において、自車両周辺或いは自車両内の状況に応じてブレーキホールド機能の有効(ON)と無効(OFF)を適切に切り替えることで、ドライバの安全確認動作を確実に判断し、車両が急発進することがない安全な車両制御が実現される。
上記した以外の課題、構成及び効果は、以下の実施形態の説明により明らかにされる。
図1は、本発明の一実施例に係る車両制御システムの全体構成例を示す機能ブロック図である。図1に示すように、車両制御システム1は、車両に搭載され、車両情報取得部110、外界認識部120、ドライバ監視部130、車両制御装置140、及びブレーキホールド部150より構成される。
ドライバ監視部130は、撮像素子を用いたカメラセンサを使用してドライバ視線情報を算出する。
二段階停止判断部142は、外界認識部120による現在の実測された外界情報又は外界情報推定部141により推定された現在の外界情報を入力として、自車両が二段階停止をするか否かを判断し、二段階停止情報を生成する。
ドライバ監視条件生成部143は、外界認識部120による現在の実測された外界情報又は外界情報推定部141により推定された現在の外界情報を入力として、ドライバ視線条件を生成する。なお、ドライバ視線条件の詳細については後述する。
ブレーキホールド制御部144は、車両情報取得部110から得られる車両運動情報、二段階停止判断部142から得られる二段階停止情報、ドライバ監視条件生成部143から得られるドライバ視線条件、ドライバ監視部130から得られるドライバ視線情報及びブレーキホールド部150から得られるブレーキホールド機能状態を入力として、ブレーキホールド機能状態の有効(ON)又は無効(OFF)を制御するブレーキホールド制御信号をブレーキホールド部150へ送信する。
ドライバ監視条件生成部143によるドライバ視線条件生成と同時に、ドライバ監視部130は、図4に示すドライバ視線角度A3を算出する。ドライバ視線角度A3は、ドライバ頭部DHの向きとドライバ眼球DEの角膜位置から算出する。
図5は、本実施例に係る車両制御システム1構成する車両制御装置140の処理動作を示すフローチャートである。以下に説明する処理は、車両制御装置140内で所定の周期で繰り返し実行される。
まずステップS510では、車両制御システム1構成する外界認識部120より、外界情報を取得し、同一の外界情報を時系列に追跡するトラッキング処理を行い、トラッキング情報を車両制御装置140内の記憶部(図示せず)に格納する。なお、上述では、外界認識部120が、算出した外界情報に対し、同一の情報を時系列に追跡するトラッキング処理を実行する旨説明したが、これに限らずここでは車両制御装置140がトラッキング処理を実行する場合を一例として説明する。
ステップS515では、車両制御装置140を構成するブレーキホールド制御部144が、取得したブレーキホールド機能状態より、ブレーキホールド機能が有効(ON)か無効(OFF)かを判断する。判断の結果が、ブレーキホールド機能が有効(ON)である場合はステップS516に進む。一方、判断の結果が、ブレーキホールド機能が無効(OFF)である場合は、前周期で既にブレーキホールド部150が無効化(OFF)されており、ステップS522に進む。
ステップS518では、車両制御装置140を構成するブレーキホールド制御部144は、ドライバ監視部130よりドライバ視線情報を取得する。
ステップS523では、車両制御装置140を構成するブレーキホールド制御部144は、ブレーキホールド機能状態を有効(ON)へ復帰させるブレーキホールド制御信号をブレーキホールド部150へ送信する。
具体的には、ブレーキホールド機能が搭載された車両であっても、二段階停止が必要な場面において、自車両周辺或いは自車両内の状況に応じてブレーキホールド機能の有効(ON)と無効(OFF)を適切に切り替えることで、ドライバの安全確認動作を確実に判断し、車両が急発進することがない安全な車両制御が実現される。
また、本実施例によれば、一時停止義務がある交差点で、且つ、左右両方又は一方に死角があり見通しの悪い場合における二段階停止の実施において、外界情報及びドライバ視線情報等に応じてブレーキホールド機能の有効(ON)と無効(OFF)を適切に切り替えることで、自車両が急発進することがなく、安全性の高い車両制御を実現できる。
Claims (12)
- 車両の周辺の情報である外界情報を認識する外界認識部と、
前記車両のドライバの視線の向きを検知するドライバ監視部と、
前記車両のブレーキが作動した状態を維持するブレーキホールド部と、
前記ブレーキホールド部のON又はOFFを制御するブレーキホールド制御部と、
前記外界認識部が検知した外界情報に基づき、前記ドライバ監視部で検知すべきドライバの視線条件を生成するドライバ監視条件生成部と、を有し、
前記ドライバ監視部が検知した前記ドライバの視線が、前記視線条件を満たす場合、前記ブレーキホールド制御部は前記ブレーキホールド部をOFFにするよう制御することを特徴とする車両制御システム。 - 請求項1に記載の車両制御システムであって、
前記外界情報に基づき前記車両が二段階停止するか否かを判断する二段階停止判断部を備え、
前記二段階停止判断部が二段階停止すると判断し、且つ、前記ドライバの視線が前記視線条件を満たす場合、前記ブレーキホールド制御部は前記ブレーキホールド部をOFFにするよう制御することを特徴とする車両制御システム。 - 請求項1に記載の車両制御システムであって、
前記外界認識部は、前記外界情報として、一時停止を指示する標識又は路面標示の周囲の死角を認識し、
前記ドライバ監視条件生成部は、少なくとも前記死角に基づいて、前記ドライバ監視部で検知すべきドライバの視線条件を生成することを特徴とする車両制御システム。 - 請求項1に記載の車両制御システムであって、
前記車両の車両運動情報を取得する車両情報取得部と、
前記車両運動情報及び前記外界情報に基づき、前記外界認識部の検知範囲外の外界情報を推定する外界情報推定部と、を有し、
前記ドライバ監視条件生成部は、前記外界情報推定部で推定した外界情報推定結果に基づき前記ドライバ監視部で検知すべきドライバの視線条件を生成することを特徴とする車両制御システム。 - 車両の周辺の情報である外界情報を認識する外界認識部が検知した外界情報に基づき、
前記車両のドライバの視線の向きを検知するドライバ監視部で検知すべきドライバの視線条件を生成するドライバ監視条件生成部と、
前記車両のブレーキが作動した状態を維持するブレーキホールド部のON又はOFFを制御するブレーキホールド制御部と、を備え、
前記ドライバ監視部が検知した前記ドライバの視線が、前記視線条件を満たす場合、前記ブレーキホールド制御部は前記ブレーキホールド部をOFFにするよう制御することを特徴とする車両制御装置。 - 請求項5に記載の車両制御装置であって、
前記外界情報に基づき前記車両が二段階停止するか否かを判断する二段階停止判断部を備え、
前記二段階停止判断部が二段階停止すると判断し、且つ、前記ドライバの視線が前記視線条件を満たす場合、前記ブレーキホールド制御部は前記ブレーキホールド部をOFFにするよう制御することを特徴とする車両制御装置。 - 請求項5に記載の車両制御装置であって、
前記外界認識部は、前記外界情報として、一時停止を指示する標識又は路面標示の周囲の死角を認識し、
前記ドライバ監視条件生成部は、少なくとも前記死角に基づいて、前記ドライバ監視部で検知すべきドライバの視線条件を生成することを特徴とする車両制御装置。 - 請求項5に記載の車両制御装置であって、
前記車両の車両運動情報及び前記外界情報に基づき、前記外界認識部の検知範囲外の外界情報を推定する外界情報推定部を有し、
前記ドライバ監視条件生成部は、前記外界情報推定部で推定した外界情報推定結果に基づき前記ドライバ監視部で検知すべきドライバの視線条件を生成することを特徴とする車両制御装置。 - ドライバ監視条件生成部は、車両の周辺の情報である外界情報を認識する外界認識部が検知した外界情報に基づき、前記車両のドライバの視線の向きを検知するドライバ監視部で検知すべきドライバの視線条件を生成し、
ブレーキホールド制御部は、前記ドライバ監視部が検知した前記ドライバの視線が、生成されたドライバの視線条件を満たす場合、前記車両のブレーキが作動した状態を維持するブレーキホールド部をOFFにするよう制御することを特徴とする車両制御方法。 - 請求項9に記載の車両制御方法であって、
二段階停止判断部は、前記外界情報に基づき前記車両が二段階停止するか否かを判断し、
前記二段階停止判断部が二段階停止すると判断し、且つ、前記ドライバの視線が前記視線条件を満たす場合、前記ブレーキホールド制御部は前記ブレーキホールド部をOFFにするよう制御することを特徴とする車両制御方法。 - 請求項9に記載の車両制御方法であって、
前記外界認識部は、前記外界情報として、一時停止を指示する標識又は路面標示の周囲の死角を認識し、
前記ドライバ監視条件生成部は、少なくとも前記死角に基づいて、前記ドライバ監視部で検知すべきドライバの視線条件を生成することを特徴とする車両制御方法。 - 請求項9に記載の車両制御方法であって、
外界情報推定部は、前記車両の車両運動情報及び前記外界情報に基づき、前記外界認識部の検知範囲外の外界情報を推定し、
前記ドライバ監視条件生成部は、前記外界情報推定部で推定した外界情報推定結果に基づき前記ドライバ監視部で検知すべきドライバの視線条件を生成することを特徴とする車両制御方法。
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JP2006227811A (ja) * | 2005-02-16 | 2006-08-31 | Denso Corp | 運転支援装置 |
JP2006224700A (ja) * | 2005-02-15 | 2006-08-31 | Denso Corp | 車両用死角監視装置及び車両用運転支援システム |
JP2009251761A (ja) * | 2008-04-02 | 2009-10-29 | Toyota Motor Corp | 運転支援システム |
JP2011086204A (ja) * | 2009-10-16 | 2011-04-28 | Honda Motor Co Ltd | 車両の走行安全装置 |
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JP2006224700A (ja) * | 2005-02-15 | 2006-08-31 | Denso Corp | 車両用死角監視装置及び車両用運転支援システム |
JP2006227811A (ja) * | 2005-02-16 | 2006-08-31 | Denso Corp | 運転支援装置 |
JP2009251761A (ja) * | 2008-04-02 | 2009-10-29 | Toyota Motor Corp | 運転支援システム |
JP2011086204A (ja) * | 2009-10-16 | 2011-04-28 | Honda Motor Co Ltd | 車両の走行安全装置 |
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