WO2018168046A1 - Dispositif de détermination de niveau de concentration, procédé de détermination de niveau de concentration, et programme de détermination de niveau de concentration - Google Patents

Dispositif de détermination de niveau de concentration, procédé de détermination de niveau de concentration, et programme de détermination de niveau de concentration Download PDF

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Publication number
WO2018168046A1
WO2018168046A1 PCT/JP2017/038553 JP2017038553W WO2018168046A1 WO 2018168046 A1 WO2018168046 A1 WO 2018168046A1 JP 2017038553 W JP2017038553 W JP 2017038553W WO 2018168046 A1 WO2018168046 A1 WO 2018168046A1
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WIPO (PCT)
Prior art keywords
concentration
driver
driving
road
vehicle
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PCT/JP2017/038553
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English (en)
Japanese (ja)
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相澤　知禎
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オムロン株式会社
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Publication of WO2018168046A1 publication Critical patent/WO2018168046A1/fr

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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
    • B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units, or advanced driver assistance systems for ensuring comfort, stability and safety or drive control systems for propelling or retarding the vehicle
    • B60W30/14—Adaptive cruise control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units, or advanced driver assistance systems for ensuring comfort, stability and safety or drive control systems for propelling or retarding the vehicle
    • B60W30/18—Propelling the vehicle
    • B60W30/182—Selecting between different operative modes, e.g. comfort and performance modes
    • 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
    • B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
    • B60W40/02—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models related to ambient 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
    • 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
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/16—Anti-collision systems

Definitions

  • the present invention relates to, for example, a concentration level determination device that determines the concentration level of a vehicle driver, a concentration level determination method, and a program for determining the concentration level.
  • the driver is required to have driving safety regardless of the driving mode, but the driving concentration required by the driver varies depending on the situation where the driver is placed.
  • Driving safety can be maintained if the vehicle constantly monitors the driver's driving concentration according to strict standards and issues a warning when the driving concentration does not satisfy this criterion. However, depending on the situation where the driver is placed, the vehicle frequently issues a warning. In this case, the driver's driving comfort is impaired.
  • a concentration level determination device which can take into account both driving safety and driving comfort. It is something to be offered.
  • a first aspect of the present invention includes a monitoring data acquisition unit that acquires monitoring data from a sensor that monitors a driver of a vehicle, and estimates the driving concentration of the driver from the monitoring data.
  • a concentration level estimation unit that compares the driving concentration level with a first reference when the vehicle is traveling on a first road, and the vehicle has a second road environment different from that of the first road.
  • a reference comparison unit that compares the driving concentration with a second reference different from the first reference when the vehicle is traveling on the road, the vehicle is traveling on the first road, and the driving If the concentration does not satisfy the first criterion, or if the vehicle travels on the second road and the driving concentration does not satisfy the second criterion,
  • a signal output unit for outputting an instruction signal for instructing execution;
  • a concentration determination apparatus comprising.
  • the second reference is a reference for requesting the driver to have a higher driving concentration than the first reference. Is.
  • the second reference is a reference for obtaining a predetermined driving concentration from the driver at a timing different from the first reference. It is what you have.
  • the first road is an expressway and the second road is a general road.
  • the concentration degree estimation unit estimates the driving concentration degree using the driver's side effect as an index.
  • a monitoring data acquisition process for acquiring monitoring data from a sensor for monitoring a driver of the vehicle, a concentration degree estimation process for estimating the driving concentration of the driver from the monitoring data,
  • the driving concentration is compared with the first reference, and the vehicle is traveling on a second road having a different road environment from the first road
  • a reference comparison process for comparing the driving concentration with a second reference different from the first reference, the vehicle traveling on the first road, and the driving concentration being the first reference If the vehicle does not satisfy the above condition, or if the vehicle travels on the second road and the driving concentration does not satisfy the second standard, an instruction signal instructing the driver to perform assistance is output.
  • Level determination with a signal output process It is the law.
  • a seventh aspect of the present invention is a program for determining a degree of concentration that causes a computer to function the processing of each unit provided in the concentration degree determining apparatus according to any one of the first to fifth aspects.
  • the concentration determination device can ask the driver for the driving concentration suitable for the road environment in which the vehicle is traveling. Thereby, the driver can maintain a state where the driver is properly concentrated in accordance with the road environment in which the vehicle is traveling. Therefore, driving safety is maintained regardless of the driver's situation.
  • the concentration determination device is configured so that the driving concentration is the same when the vehicle is traveling on the first road and when the vehicle is traveling on the second road.
  • the instruction signal is output when the vehicle is traveling on the second road, but the instruction signal is not output when the vehicle is traveling on the first road. Therefore, the concentration determination apparatus can reduce the output of excessive instruction signals, particularly when the vehicle is traveling on the first road. This prevents the driver from receiving excessive warnings, particularly when the vehicle is traveling on the first road.
  • the driver can comfortably keep a state of concentration on driving regardless of the road environment in which the vehicle is traveling. Accordingly, driving comfort is maintained regardless of the driver's situation.
  • the concentration determination device can take into account both driving safety and driving comfort.
  • the concentration degree determination device is configured such that the vehicle travels on a second road (for example, a road that requires more concentration and attention than the first road to drive the vehicle).
  • a second road for example, a road that requires more concentration and attention than the first road to drive the vehicle.
  • the driver can maintain a more concentrated state of driving when the vehicle is traveling on the second road than when the vehicle is traveling on the first road.
  • the driver will not receive an excessive warning, particularly when the vehicle is traveling on the first road.
  • the concentration determination device can determine the driving concentration at an appropriate timing according to the road environment in which the vehicle is traveling. Furthermore, the concentration level determination device does not output an instruction signal at a timing at which determination of the driving concentration level can be omitted. As a result, the driver can appropriately maintain a state of concentration in driving according to the road environment in which the vehicle is traveling. In addition, the driver does not receive excessive warnings, particularly when the vehicle is traveling on the first road.
  • the concentration determination device when the vehicle is traveling on a general road, the concentration determination device asks the driver for a higher driving concentration than when the vehicle is traveling on a highway. be able to.
  • the driver can maintain a state of being concentrated on driving on a general road that requires more concentration and attention than driving on an expressway.
  • the concentration determination apparatus can reduce the output of excessive instruction signals, particularly when the vehicle is traveling on an expressway. The driver needs less warning when the vehicle is traveling on a highway than when the vehicle is traveling on a general road. Therefore, the driver does not receive an excessive warning when the vehicle is traveling on the highway, and can drive the vehicle comfortably.
  • the concentration degree determination device uses the indicator that has a large influence on the safety of driving regardless of the road environment in which the vehicle is driving, such as a side look driving. It can be monitored whether it is in a suitable state. As a result, the driver can maintain a more concentrated state of driving regardless of the road environment in which the vehicle is traveling.
  • the concentration determination method can obtain the same effect as that of the first aspect described above. That is, the concentration degree determination method can take into account both driving safety and driving comfort.
  • the program for determining the degree of concentration can obtain the same effects as those of the first aspect described above. That is, the program for determining the degree of concentration can take into account both driving safety and driving comfort.
  • FIG. 1 is a diagram illustrating an overall configuration of a vehicle including a concentration degree determination device according to an embodiment of the present invention.
  • FIG. 2 is a block diagram showing the configuration of the concentration degree determination apparatus according to an embodiment of the present invention.
  • FIG. 3 is a block diagram showing the configuration of the state detection unit according to an embodiment of the present invention.
  • FIG. 4 is a flowchart showing a procedure of concentration level determination by the concentration level determination apparatus shown in FIG.
  • FIG. 1 is a diagram showing an overall configuration of a vehicle 1 including a concentration degree determination device 2 according to an embodiment of the present invention.
  • the concentration determination device 2 is mounted on a vehicle 1 such as a passenger car.
  • the configuration of the concentration determination device 2 will be described later.
  • the vehicle 1 may be, for example, any one of an automobile, a bus, a truck, a train, and the like, or a vehicle on which a driver (hereinafter also referred to as a driver) other than these rides.
  • the vehicle 1 includes, as basic equipment, a power unit 3 including a power source and a transmission, a steering device 4 equipped with a steering wheel 5, and further includes a manual operation mode and an automatic operation mode as operation modes. .
  • An engine and / or a motor is used as the power source.
  • the manual driving mode is a mode in which the vehicle 1 is driven mainly by a driver's manual driving operation, for example.
  • the manual driving mode for example, an operation mode for driving the vehicle 1 based only on the driving operation of the driver and an operation for performing driving operation support control for supporting the driving operation of the driver while mainly driving the driving operation of the driver. Mode is included.
  • the driving operation support control assists the steering torque so that the driver's steering becomes an appropriate steering amount based on the curvature of the curve when the vehicle 1 is traveling on the curve, for example.
  • the driving operation support control includes control for assisting a driver's accelerator operation (for example, operation of an accelerator pedal) or brake operation (for example, operation of a brake pedal), manual steering (manual operation of steering), and manual speed adjustment (speed). Adjustment manual operation) is also included.
  • a driver's accelerator operation for example, operation of an accelerator pedal
  • brake operation for example, operation of a brake pedal
  • manual steering manual operation of steering
  • speed manual speed adjustment
  • Adjustment manual operation is also included.
  • manual steering the vehicle 1 is steered mainly by the driver's operation of the steering wheel 5.
  • the speed of the vehicle 1 is adjusted mainly by the driver's accelerator operation or brake operation.
  • the driving operation support control does not include control for forcibly intervening in the driving operation of the driver to automatically drive the vehicle 1. That is, in the manual driving mode, the driving operation of the driver is reflected in the driving of the vehicle 1 within a preset allowable range, but the driving of the vehicle 1 is compulsory under certain conditions (for example, lane departure of the vehicle 1). Interventive control is not included.
  • the automatic operation mode is a mode for realizing an operation state in which the vehicle 1 is automatically driven along the road on which the vehicle 1 is traveling, for example.
  • the automatic driving mode includes, for example, a driving state in which the vehicle 1 is automatically driven toward a preset destination without driving by the driver.
  • the automatic driving mode it is not always necessary to automatically control all of the vehicle 1, and the driving state in which the driving operation of the driver is reflected in the traveling of the vehicle 1 within a preset allowable range is also included in the automatic driving mode. That is, the automatic driving mode includes control for forcibly intervening in the traveling of the vehicle 1 under certain conditions, while reflecting the driving operation of the driver in the traveling of the vehicle 1 within a preset allowable range.
  • the vehicle 1 further includes an outside camera 6, a steering sensor 7, an accelerator pedal sensor 8, a brake pedal sensor 9, a GPS receiver 10, a gyro sensor 11, a vehicle speed sensor 12, a navigation device 13, an automatic An operation control device 14, a driver camera 15, and an audio output device 16 are provided.
  • the outside camera 6 is installed at an arbitrary position of the vehicle 1 so that the outside of the vehicle 1 can be photographed. Although one vehicle exterior camera 6 is shown in FIG. 1, the vehicle 1 may include a plurality of vehicle exterior cameras that capture different directions.
  • the outside camera 6 continuously captures the driving environment in the vicinity of the vehicle 1.
  • the vehicle exterior camera 6 is activated in response to the start of operation of the vehicle 1 and continuously captures the outside of the vehicle 1.
  • the vehicle exterior camera 6 outputs the captured image (hereinafter also referred to as vehicle exterior image data) to the concentration degree determination device 2 and the automatic driving control device 14.
  • the steering sensor 7 detects a steering angle.
  • the steering sensor 7 outputs the detection result to the automatic driving control device 14.
  • the accelerator pedal sensor 8 detects an operation amount of the accelerator pedal.
  • the accelerator pedal sensor 8 outputs the detection result to the automatic operation control device 14.
  • the brake pedal sensor 9 detects the operation amount of the brake pedal.
  • the brake pedal sensor 9 outputs the detection result to the automatic operation control device 14.
  • the GPS receiver 10 receives current position information of the vehicle 1.
  • the GPS receiver 10 outputs the current position information to the concentration determination device 2, the navigation device 13, and the automatic operation control device 14.
  • the gyro sensor 11 detects the behavior of the vehicle 1.
  • the gyro sensor 11 outputs the detection result to the automatic operation control device 14.
  • the vehicle speed sensor 12 detects the speed of the vehicle 1.
  • the vehicle speed sensor 12 outputs the detection result to the automatic driving control device 14.
  • the navigation device 13 is an example of a video display device that includes a display 131 that displays video.
  • the navigation device 13 stores map information.
  • the navigation device 13 extracts route information from the current position to the destination by using information on the destination input by the driver or the like, map information, and current position information from the GPS receiver 10.
  • the navigation device 13 displays route information on the display 131.
  • the navigation device 13 can also display information other than route information on the display 131.
  • the navigation device 13 outputs the route information to the concentration degree determination device 2 and the automatic driving control device 14.
  • the route information described above may include not only information on the route from the current position to the destination, but also information on the road environment from the current position to the destination. Some examples of information about the road environment will be described.
  • the information on the road environment may include information on the type of road that passes from the current position to the destination.
  • the types of roads are classified into, for example, roads in which human traffic is restricted or roads in which human traffic is not restricted.
  • the road where the passage of people is restricted is, for example, an expressway.
  • a highway refers to a highway national highway and a motorway.
  • the road where the passage of people is not restricted is, for example, a general road.
  • a general road refers to a road other than a highway.
  • the information on the road environment may include information on the speed limit of the road that passes from the current position to the destination.
  • the information regarding the road environment may include position information of an installation on the road passing from the current position to the destination.
  • the installed object is, for example, a sign, but may be an object installed on the road.
  • the information regarding the road environment may include position information of a building near the road passing from the current position to the destination. Note that the route information may include information other than the above example as information on the road environment.
  • the configuration of the automatic operation control device 14 will be described.
  • the automatic operation control device 14 automatically controls traveling of the vehicle 1 when the operation mode is the automatic operation mode.
  • the automatic driving control device 14 includes an outside image data from the outside camera 6, a detection result from the steering sensor 7, a detection result from the accelerator pedal sensor 8, a detection result from the brake pedal sensor 9, and a GPS receiver 10. Current position information, a detection result from the gyro sensor 11, a detection result from the vehicle speed sensor 12, and route information from the navigation device 13 are acquired.
  • the automatic driving control device 14 automatically controls the travel of the vehicle 1 based on these information and traffic information acquired by road-to-vehicle communication.
  • Automatic control includes, for example, automatic steering (automatic steering operation) and automatic speed adjustment (automatic driving of speed).
  • Automatic steering is an operating state in which the steering device 4 is automatically controlled.
  • Automatic steering includes LKAS (Lane Keeping Assist System).
  • the LKA automatically controls the steering device 4 so that the vehicle 1 does not deviate from the traveling lane even when the driver does not perform the steering operation.
  • the steering operation of the driver may be reflected in the steering of the vehicle 1 within a range (allowable range) in which the vehicle 1 does not deviate from the travel lane even during execution of LKAS.
  • automatic steering is not limited to LKAS.
  • Automatic speed adjustment is an operating state in which the speed of the vehicle 1 is automatically controlled.
  • Automatic speed adjustment includes ACC (Adaptive Cruise Control). For example, when there is no preceding vehicle ahead of the vehicle 1, ACC performs constant speed control that causes the vehicle 1 to travel at a constant speed at a preset speed, and when the preceding vehicle exists ahead of the vehicle 1. Is a follow-up control that adjusts the vehicle speed of the vehicle 1 in accordance with the inter-vehicle distance from the preceding vehicle.
  • the automatic operation control device 14 decelerates the vehicle 1 according to the driver's brake operation (for example, operation of the brake pedal) even when ACC is being executed.
  • the automatic driving control device 14 can operate the driver's accelerator operation (for example, accelerator) up to a preset maximum permissible speed (for example, the maximum speed legally determined on the traveling road) even when ACC is being executed.
  • the vehicle 1 can be accelerated according to the pedal operation.
  • the automatic speed adjustment is not limited to ACC but also includes CC (Cruise Control).
  • the configuration of the driver camera 15 will be described.
  • the driver camera 15 is installed, for example, at a position that is in front of the driver as on a dashboard.
  • the driver camera 15 is an example of a sensor that monitors a driver.
  • the driver camera 15 is activated in response to the start of driving of the vehicle 1 and continuously captures a predetermined range including the driver's face.
  • the driver camera 15 outputs the captured image (hereinafter referred to as driver image data) to the concentration degree determination device 2.
  • Driver image data is an example of monitoring data used to detect the state of the driver.
  • the driver's condition is, for example, driver's forward gaze, drowsiness, looking aside, putting on and taking off clothes, telephone operation, leaning on the window / armrest, driving disturbance by passengers and pets, onset of illness, backwards, kneeling, eating and drinking , Smoking, dizziness, abnormal behavior, car navigation / audio operation, attachment / detachment of glasses / sunglasses, photography, and a degree of recognition of a subject (a degree of recognition of a subject).
  • the degree of object recognition is an index of how much the driver has recognized the object (for example, visually), and is the degree to which the driver is conscious by confirming the object (for example, visually).
  • the state of the driver may include an index other than the index exemplified here.
  • the audio output device 16 includes a speaker 161.
  • the audio output device 16 outputs various information as audio.
  • the concentration level determination device 2 estimates the driver's concentration level based on the above-described driver state, and determines whether or not the driver is in a state suitable for driving the vehicle 1.
  • the driving concentration degree is a degree suitable for the driver to drive the vehicle 1. As the driving concentration increases, the driver becomes more suitable for driving the vehicle 1. Conversely, as the degree of driving concentration decreases, the driver becomes more unsuitable for driving the vehicle 1.
  • FIG. 2 is a block diagram illustrating a configuration of the concentration determination device 2 as an example.
  • the concentration degree determination device 2 includes an input / output interface unit 21, a storage unit 22, and a control unit 23.
  • the input / output interface unit 21 connects the outside camera 6, the GPS receiver 10, the navigation device 13, the automatic driving control device 14, the driver camera 15, and the audio output device 16 to the control unit 23.
  • the configuration of the storage unit 22 will be described.
  • the storage unit 22 is a non-volatile memory that can be written and read at any time, such as a solid state drive (SSD) and a hard disk drive (HDD).
  • the storage unit 22 includes a driver image data storage unit 221, a vehicle exterior image data storage unit 222, and a concentration level table storage unit 223.
  • the driver image data storage unit 221 stores driver image data that the control unit 23 acquires from the driver camera 15.
  • the vehicle exterior image data storage unit 222 stores vehicle exterior image data that the control unit 23 acquires from the vehicle exterior camera 6.
  • the concentration level table storage unit 223 stores a concentration level table used by the control unit 23 to estimate the driving concentration level.
  • the concentration degree table associates the state of the driver with a plurality of levels corresponding to the degree of driving concentration for each index.
  • the plurality of levels are divided into, for example, three levels of level 1, level 2, and level 3, but the present invention is not limited to this.
  • the driving concentration is set to be lower as the level number is larger, but the present invention is not limited to this. It may be set such that the driving concentration increases as the level number increases.
  • Level 1 is associated with, for example, the state of a driver who is looking at a direction tilted at an angle in the range of 0 degrees or more and less than the first angle with respect to the traveling direction of the vehicle 1. That is, Level 1 is a state in which the driver is not looking aside and driving concentration is high.
  • Level 2 is associated with, for example, the state of the driver who is looking at a direction tilted at an angle in the range of the first angle and less than the second angle with respect to the traveling direction of the vehicle 1.
  • Level 2 is a state in which the driver is looking aside and has a lower driving concentration than Level 1.
  • Level 3 is associated with, for example, the state of the driver who is looking at a direction inclined at an angle equal to or greater than the second angle with respect to the traveling direction of the vehicle 1. That is, Level 3 is a state in which the driver is looking aside and the driving concentration is lower than Level 2.
  • the information managed in the concentration level table has been described by taking a side look as an example, but the same applies to other indexes.
  • the configuration of the control unit 23 will be described.
  • the control unit 23 includes a processor 231 and a memory 232.
  • the processor 231 is, for example, a CPU (Central Processing Unit) that constitutes a computer.
  • the configuration of each unit included in the processor 231 will be described later.
  • the memory 232 includes a program that causes the processor 231 to perform processing of each unit included in the processor 231.
  • the program can also be referred to as an instruction for operating the processor 231.
  • the program is stored in the storage unit 22 and is read from the storage unit 22 to the memory 232.
  • the program in the memory 232 is read by the processor 231.
  • One embodiment may be realized by a program.
  • the processor 231 includes a monitoring data acquisition unit 2311, a vehicle exterior image data acquisition unit 2312, a route information acquisition unit 2313, a current position information acquisition unit 2314, a state detection unit 2315, a concentration degree estimation unit 2316, and a reference comparison unit. 2317 and a signal output unit 2318. Each unit may be distributed among one or more processors.
  • the monitoring data acquisition unit 2311 acquires driver image data from the driver camera 15 via the input / output interface unit 21.
  • the monitoring data acquisition unit 2311 stores the driver image data in the driver image data storage unit 221.
  • the vehicle exterior image data acquisition unit 2312 acquires vehicle exterior image data from the vehicle exterior camera 6 via the input / output interface unit 21.
  • the vehicle exterior image data acquisition unit 2312 stores the vehicle exterior image data in the vehicle exterior image data storage unit 222.
  • the route information acquisition unit 2313 acquires route information from the navigation device 13 via the input / output interface unit 21.
  • the route information acquisition unit 2313 outputs the route information to the state detection unit 2315.
  • the current position information acquisition unit 2314 acquires current position information from the GPS receiver 10 via the input / output interface unit 21.
  • the current position information acquisition unit 2314 outputs the current position information to the state detection unit 2315.
  • the state detection unit 2315 detects the state of the driver from the driver image data stored in the driver image data storage unit 221. In addition to the driver image data, the state detection unit 2315 detects, for example, the above-described object recognition degree as the driver's state using at least one of image data outside the vehicle, route information, and current position information. Also good. An example of detection of the driver's state by the state detection unit 2315 will be described later. Note that the state detection unit 2315 may acquire the driver image data from the monitoring data acquisition unit 2311 without using the driver image data storage unit 221. In this case, the storage unit 22 may not include the driver image data storage unit 221. The state detection unit 2315 outputs the driver's state to the concentration degree estimation unit 2316.
  • the concentration level estimation unit 2316 estimates the driver's driving concentration level based on the driver's state detected by the state detection unit 2315. Note that since the driver's state is detected from the driver image data as described above, the concentration degree estimation unit 2316 can estimate the driver's driving concentration degree from the driver image data.
  • the concentration degree estimation unit 2316 estimates a driving concentration degree corresponding to each of one or more indexes included in the driver's state.
  • the concentration level estimation unit 2316 estimates, for example, the driving concentration level using sleepiness as an index, and also estimates the driving concentration level using a side look as an index. Note that the concentration level estimation unit 2316 may estimate, for example, one driving concentration level by comprehensively determining a plurality of indexes included in the driver's state.
  • the concentration degree estimation unit 2316 can estimate the driving concentration degree by a numerical value such as a ratio.
  • the numerical value estimated by the concentration degree estimation unit 2316 may increase as the driving concentration degree increases, or may decrease as the driving concentration degree increases.
  • the concentration degree estimation unit 2316 refers to the concentration degree table stored in the concentration degree table storage unit 223 and estimates the level of driving concentration corresponding to the driver's state from a plurality of levels. be able to. Note that when the concentration level estimation unit 2316 estimates the driving concentration level numerically, the storage unit 22 may not include the concentration level table storage unit 223.
  • the estimation of the driving concentration by the concentration estimating unit 2316 may be performed using an AI (Artificial Intelligence) function such as machine learning or deep learning.
  • AI Artificial Intelligence
  • the concentration degree estimation unit 2316 can estimate the state of the driver with high accuracy by using the past estimation result for estimation of the current driving concentration degree, for example.
  • the reference comparison unit 2317 compares the driving concentration level estimated by the concentration level estimation unit 2316 with the reference.
  • the reference comparison unit 2317 compares the driving concentration with the first reference when the vehicle 1 is traveling on the first road.
  • the first standard is a standard for determining the driving concentration suitable for the first road.
  • the reference comparison unit 2317 compares the driving concentration with a second reference different from the first reference when the vehicle 1 is traveling on a second road having a different road environment from the first road. .
  • the second standard is a standard for determining the driving concentration suitable for the second road.
  • the second criterion may be a criterion that asks the driver for a higher driving concentration than the first criterion.
  • the second standard can be said to be a stricter standard regarding the driving concentration than the first standard.
  • the second criterion may be a criterion for obtaining a predetermined degree of driving concentration from the driver at a timing different from the first criterion.
  • the second criterion may be a criterion that requires the driver to maintain a predetermined driving concentration for a longer period than the first criterion.
  • the second reference only needs to be different from the first reference as described above, and is not limited to the example given here. Note that the first reference and the second reference may be arbitrarily changed.
  • the reference comparison unit 2317 may compare the driving concentration level for each of the plurality of indexes with the reference.
  • the reference comparison unit 2317 outputs the comparison result to the signal output unit 2318.
  • the reference comparison unit 2317 can determine the road environment of the road on which the vehicle 1 is traveling based on the route information from the navigation device 13, for example. For example, the reference comparison unit 2317 may determine the road environment of the road on which the vehicle 1 is traveling based on information obtained through road-to-vehicle communication. The reference comparison unit 2317 may determine the road environment of the road on which the vehicle 1 is traveling based on information other than these.
  • the second road is, for example, a road environment in which the driver needs more concentration and attention than the first road for driving the vehicle 1.
  • the second road may be a road having a different road environment from the first road as described above, and is not limited to this example.
  • the second road becomes a road in a road environment in which the driver needs more concentration and attention to drive the vehicle 1 than the first road
  • the present invention is not limited thereto. It is not a thing.
  • the first road is a highway and the second road is a general road. On highways, there is usually no human jump out. On the other hand, people can jump out on ordinary roads.
  • the highway is a road having a straight section longer than a general road. Therefore, a general road requires more concentration and attention to drive the vehicle 1 than a highway, regardless of the driving mode.
  • the first road is a road section including an intersection where a signal is installed among general roads
  • the second road is a road section including an intersection where no signal is installed among general roads.
  • the reference comparison unit 2317 compares the driving concentration estimated by the concentration estimation unit 2316 with the first reference value or the first reference level serving as the first reference. If the driving concentration degree is equal to or higher than the first reference value or the first reference level, the reference comparison unit 2317 determines that the driving concentration degree satisfies the first reference. Similarly, the reference comparison unit 2317 compares the driving concentration estimated by the concentration estimation unit 2316 with the second reference value or the second reference level serving as the second reference. If the driving concentration degree is equal to or higher than the second reference value or the second reference level, the reference comparison unit 2317 determines that the driving concentration degree satisfies the second reference.
  • the comparison between the driving concentration degree estimated by the numerical value by the reference comparison unit 2317 and the reference will be described.
  • the first reference value is a numerical value A
  • the second reference value is a numerical value B that is larger than the numerical value A.
  • the second reference value can be said to be that the degree of driving concentration required by the driver is higher or stricter than the first reference value. If the numerical value estimated by the concentration degree estimation unit 2316 is smaller than the numerical value A that is the first reference value, the reference comparison unit 2317 indicates that the driving concentration degree estimated by the concentration degree estimation unit 2316 is greater than the first reference value. Is also determined to be low.
  • the reference comparison unit 2317 indicates that the driving concentration degree estimated by the concentration degree estimation unit 2316 is the second value. Judged to be lower than the reference value.
  • the first reference value is a numerical value C
  • the second reference value is a numerical value D smaller than the numerical value C.
  • the second reference value can be said to be that the degree of driving concentration required by the driver is higher or stricter than the first reference value. If the numerical value estimated by the concentration degree estimation unit 2316 is larger than the numerical value C that is the first reference value, the reference comparison unit 2317 indicates that the driving concentration degree estimated by the concentration degree estimation unit 2316 is greater than the first reference value. Is also determined to be low.
  • the reference comparison unit 2317 has the driving concentration degree estimated by the concentration degree estimation unit 2316 as the second reference value. Judged to be lower than the reference value.
  • the first reference level is level E extracted from a plurality of levels
  • the second reference level is level F extracted from the plurality of levels.
  • the level F which is the second reference level, is higher or stricter than the level E, which is the driving reference level required by the driver, which is the first reference level.
  • the reference comparison unit 2317 calculates the driving concentration estimated by the concentration level estimation unit 2316. It is determined that the degree is lower than the first reference level.
  • the reference comparison unit 2317 is estimated by the concentration level estimation unit 2316. It is determined that the driving concentration level is lower than the second reference level.
  • the concentration level table associates the state of the driver with the three levels of Level 1, Level 2, and Level 3 for each index
  • the first reference level is set to level 2
  • the second reference level is set to level 1 higher or stricter than level 2.
  • the reference comparison unit 2317 determines that the level 3 estimated by the concentration degree estimation unit 2316 is lower than the level 2 that is the first reference level.
  • the reference comparison unit 2317 determines that the level 1 or the level 2 estimated by the concentration degree estimation unit 2316 is not lower than the level 2 that is the first reference level.
  • the reference comparison unit 2317 determines that level 2 or level 3 estimated by the concentration degree estimation unit 2316 is lower than level 1 that is the second reference level.
  • the reference comparison unit 2317 determines that the level 1 estimated by the concentration estimation unit 2316 is not lower than the level 1 that is the first reference level.
  • the signal output unit 2318 outputs a signal to each unit via the input / output interface unit 21.
  • Examples of some signals output from the signal output unit 2318 will be described.
  • the signal output unit 2318 determines, based on the comparison result from the reference comparison unit 2317, whether or not to output an instruction signal instructing execution of assistance to the driver to the assistance providing device.
  • the signal output unit 2318 outputs an instruction signal when the vehicle 1 travels on the first road and the driving concentration level estimated by the concentration level estimation unit 2316 does not satisfy the first standard.
  • the signal output unit 2318 outputs an instruction signal when the vehicle 1 travels on the second road and the driving concentration estimated by the concentration estimating unit 2316 does not satisfy the second reference.
  • the support providing device executes predetermined support for the driver.
  • the support providing device is, for example, the navigation device 13 or the audio output device 16.
  • the navigation device 13 displays a warning on the display 131 as an image or a video to alert the driver based on the instruction signal.
  • the voice output device 16 outputs a warning for giving a warning to the driver from the speaker 161 based on the instruction signal.
  • the warning may be any content that warns the driver that, for example, the degree of driving concentration is low or that it is necessary to concentrate on driving, and is not limited. The driver recognizes from the warning that the driver is not in a state suitable for driving the vehicle 1 and can concentrate on driving the vehicle 1 again.
  • the signal output unit 2318 may output the instruction signal to a support providing device other than the navigation device 13 and the voice output device 16.
  • the signal output unit 2318 may output an instruction signal to a support providing device that gives an external stimulus such as vibration to the driver.
  • the support for the driver may be any output content that acts on the driver based on the driving concentration level, and includes various types of support for improving the driving concentration level in addition to warnings, alerts, and information provision.
  • the signal output unit 2318 can output an instruction signal when one or more driving concentration degrees among a plurality of driving concentration degrees estimated from a plurality of indices do not satisfy the first criterion or the second criterion. .
  • the signal output unit 2318 outputs an instruction signal when a predetermined number or more of a plurality of driving concentration degrees estimated from a plurality of indices does not satisfy the first criterion or the second criterion. May be.
  • the signal output unit 2318 may output a switching signal for switching the operation mode to the automatic operation control device 14.
  • FIG. 3 is a block diagram illustrating a configuration of the state detection unit 2315.
  • the state detection unit 2315 includes a local state detection unit 23151, a global state detection unit 23152, and a driver state detection unit 23153.
  • the local state detection unit 23151 detects the state of at least one of the organs included in the driver's face in the driver image data.
  • the organs included in the face are, for example, the eyes, mouth, nose and ears, but other organs may be used.
  • the local state detection unit 23151 detects an eye state
  • the local state detection unit 23151 detects, for example, a driver's eye open / closed degree, a line-of-sight direction, a face direction, and the like.
  • Local state detection unit 23151 outputs a detection result (hereinafter also referred to as local information) to driver state detection unit 23153.
  • the global state detection unit 23152 detects at least one of the global states of the driver in the driver image data.
  • the global state is, for example, the movement and posture of the driver, but may be other than these.
  • the global state detection unit 23152 outputs a detection result (hereinafter also referred to as global information) to the driver state detection unit 23153.
  • the driver state detection unit 23153 detects the above-described driver state using the local information from the local state detection unit 23151 and the global information from the global state detection unit 23152.
  • the state detection unit 2315 can detect various driver states by combining local information and global information, for example.
  • the state detection unit 2315 can detect the degree of object recognition using the monitoring data and the position information of the object.
  • the state detection unit 2315 can detect the degree of object recognition by the driver's vision using the image data outside the vehicle in addition to the driver image data as follows.
  • the state detection unit 2315 extracts a target for detecting the degree of object recognition from the image data outside the vehicle.
  • the target is, for example, an installation such as a sign or a building, but is not particularly limited as long as the driver may confirm (for example, visually) and be aware of it.
  • the state detection unit 2315 detects the driver's line of sight and face orientation from the driver image data captured at substantially the same timing as when the image data outside the vehicle from which the target was extracted was captured.
  • the driver's line of sight and face orientation are detected by the local state detection unit 23151 as described above.
  • the state detection unit 2315 detects the degree of object recognition using at least one of the driver's line of sight and face orientation and the position information of the object. It can be said that the degree of object recognition increases as the driver's line of sight and face direction face the object.
  • the state detection unit 2315 describes several examples for detecting the level of object recognition.
  • the state detection unit 2315 has a high degree of object recognition on condition that at least one of the driver's line of sight and face orientation is in a state that matches the position of the object for a predetermined time. It may be detected.
  • the state detection unit 2315 detects that the degree of target recognition is low. May be.
  • the state detection unit 2315 may detect the degree of object recognition in accordance with the length of time that the driver stays in a state where at least one of the driver's line of sight and face orientation matches the target position.
  • the state detection unit 2315 may estimate the degree of object recognition based on the presence or absence of a specific driving operation or a driver's action that is assumed to result from the driver's recognition of the object. For example, when the driver recognizes that a pedestrian is present near the pedestrian crossing in front of the vehicle 1, it is assumed that the driver performs a deceleration operation. Therefore, when the concentration determination device 2 detects that a pedestrian is present near the pedestrian crossing in front of the vehicle 1, the state detection unit 2315 detects the driver's deceleration operation, and the degree of object recognition is You may detect that it is high.
  • the state detection unit 2315 detects the driver's deceleration operation even after a predetermined time has elapsed. If not, it may be detected that the degree of object recognition is low. For example, depending on the length of time from when the concentration determination device 2 detects a target pedestrian until the driver's deceleration operation is detected, the state detection unit 2315 may detect the target recognition degree. Good.
  • the state detection unit 2315 can detect the degree of object recognition using route information and current position information in addition to driver image data as follows.
  • the state detection unit 2315 refers to the route information and the current position information and extracts a target located in the vicinity of the vehicle 1.
  • the target is, for example, an installation such as a sign or a building, but is not particularly limited as long as the driver may confirm (for example, visually) and recognize it.
  • the state detection unit 2315 detects the driver's line of sight and the direction of the face from the driver image data captured at substantially the same timing as when the vehicle 1 passes through the vicinity of the target.
  • the state detection unit 2315 detects the degree of object recognition using at least one of the driver's line of sight and face orientation and the position information of the object.
  • the state detection unit 2315 may obtain the target position and the timing at which the vehicle 1 passes near the target through road-to-vehicle communication. In this case, the state detection unit 2315 detects the driver's line of sight and face direction from the driver image data captured at substantially the same timing as the vehicle 1 passes through the vicinity of the target. The state detection unit 2315 detects the degree of object recognition using at least one of the driver's line of sight and face orientation and the position information of the object.
  • the state detection unit 2315 may use an image or video displayed on the display 131 of the navigation device 13 as a target. In this case, the state detection unit 2315 detects the driver's line of sight and face direction from the driver image data captured at substantially the same timing as when the image or video is displayed on the display 131. The state detection unit 2315 detects the degree of object recognition using at least one of the driver's line of sight and face orientation and the position information of the object.
  • the state detection unit 2315 can appropriately detect the driver's state using the degree of object recognition as an index.
  • the state detection unit 2315 may use an object located in the vicinity of the front, rear, left, or right of the vehicle 1.
  • the state detection unit 2315 preferably uses an object located near the left side or the right side rather than the front side of the vehicle 1. If the object is located on the front side of the vehicle 1, the driver's line of sight and face do not move much. On the other hand, if the object is located near the left side or right side of the vehicle 1, the driver's line of sight and face move to the left or right side. Therefore, the state detection unit 2315 can appropriately detect the target recognition degree.
  • FIG. 4 is a flowchart showing a procedure as an example of concentration level determination by the concentration level determination device 2.
  • the operation of the concentration determination device 2 described here may be the same regardless of whether the operation mode is the automatic operation mode or the manual operation mode.
  • the monitoring data acquisition unit 2311 acquires monitoring data from a sensor that monitors the driver of the vehicle 1 (step S101). In step S ⁇ b> 101, the monitoring data acquisition unit 2311 acquires driver image data from the driver camera 15 via, for example, the input / output interface unit 21. Note that the interval at which the monitoring data acquisition unit 2311 acquires the monitoring data may be the same as or shorter than the interval at which the state detection unit 2315 detects the driver's state.
  • the state detection unit 2315 detects the driver's state from the monitoring data (step S102).
  • the state detection unit 2315 detects the state of the driver from the driver image data, for example.
  • the state detection unit 2315 can detect the state of the driver at a predetermined interval, for example.
  • the state detection unit 2315 may detect the state of the driver at the same interval in the automatic operation mode and the manual operation mode, or may detect the state of the driver at different intervals. Even if the state detection unit 2315 detects the driver's state at the same interval when the vehicle 1 is traveling on the first road and when the vehicle 1 is traveling on the second road, the state detection unit 2315 is different in interval.
  • the driver's condition may be detected by The state detection unit 2315 may detect the state of the driver at an arbitrary timing.
  • the concentration degree estimation unit 2316 estimates the driver's driving concentration degree from the monitoring data (step S103). In step 103, the concentration degree estimation unit 2316 estimates the driving concentration degree based on the state of the driver detected from the driver image data by the state detection unit 2315, for example.
  • the reference comparison unit 2317 determines whether or not the vehicle 1 is traveling on the first road (step S104). When the vehicle 1 is traveling on the first road (step S104, Yes), the reference comparison unit 2317 compares the driving concentration with the first reference (step S105). When the driving concentration satisfies the first criterion (step S105, Yes), the processing of the concentration determination device 2 may transition from step S105 to step S101.
  • step S106 When the driving concentration does not satisfy the first standard (step S105, No), the signal output unit 2318 outputs an instruction signal instructing execution of assistance to the driver (step S106). That is, in step S106, when the vehicle 1 travels on the first road and the driving concentration does not satisfy the first standard, the signal output unit 2318 outputs an instruction signal.
  • the reference comparison unit 2317 compares the driving concentration with a second reference different from the first reference (step S107).
  • the case where the vehicle 1 is not traveling on the first road corresponds to the case where the vehicle 1 is traveling on the second road.
  • the processing of the concentration determination device 2 may transition from step S107 to step S101.
  • step S106 When the driving concentration does not satisfy the second standard (step S107, No), the signal output unit 2318 outputs an instruction signal (step S106). That is, in step S106, when the vehicle 1 travels on the second road and the driving concentration does not satisfy the second standard, the signal output unit 2318 outputs an instruction signal.
  • the reference comparison unit 2317 may determine, for example, the second road as a road that requires more concentration and attention for driving the vehicle 1 than the first road as described above.
  • the concentration determination device 2 can ask the driver for a higher driving concentration when the vehicle 1 is traveling on a general road than when the vehicle 1 is traveling on a highway.
  • the concentration determination device 2 can reduce the output of excessive instruction signals especially when the vehicle 1 is traveling on a highway.
  • the driver needs less warning when the vehicle 1 is traveling on the highway than when the vehicle 1 is traveling on a general road.
  • the driver does not receive an excessive warning when the vehicle 1 is traveling on the highway, and can drive the vehicle 1 comfortably.
  • the reference comparison unit 2317 does not necessarily need to apply a reference (for example, the second reference) different from that of a general road in all sections of the expressway.
  • the reference comparison unit 2317 may apply a reference (for example, the first reference) equivalent to that of a general road in a predetermined section of the expressway.
  • the predetermined section include a section within a predetermined distance starting from an entrance / exit of an expressway, a toll gate, or a junction.
  • the concentration degree estimation part 2316 may be made to estimate a driving concentration degree by using a driver's side aside as an index.
  • Good. Wakimi is an indicator that has a large impact on driving safety.
  • the concentration determination device 2 can monitor whether or not the driver is in a suitable state for driving using an index that has a large influence on driving safety, regardless of the road environment in which the vehicle 1 is traveling. . As a result, the driver can maintain a more concentrated state of driving regardless of the road environment in which the vehicle 1 is traveling.
  • the criteria for determining the driving concentration may be changed according to the combination of the road environment and the driving mode.
  • the reference comparison unit 2317 selects the first reference in the automatic driving mode and when traveling on the first road.
  • the reference comparison unit 2317 selects the second reference in the automatic driving mode and when traveling on the second road.
  • the reference comparison unit 2317 selects the third reference in the manual operation mode and when traveling on the first road.
  • the reference comparison unit 2317 selects the fourth reference in the manual operation mode and when traveling on the second road.
  • the second road requires more concentration and attention to drive the vehicle 1 than the first road.
  • the second reference is higher than the first reference
  • the third reference is higher than the second reference
  • the reference may be set higher than the third reference.
  • the third standard is higher than the first standard
  • the second standard is higher than the third standard
  • the fourth criterion may be set higher than the second criterion.
  • the relationship between the first reference and the second reference used by the reference comparison unit 2317 in step S105 and step S107 is that the second reference is a reference for the driver to obtain a higher driving concentration than the first reference. Such a relationship may be used (hereinafter referred to as a first relationship).
  • the reference comparison unit 2317 compares the driving concentration degree estimated by the concentration degree estimation unit 2316 with the first reference value or the first reference level serving as the first reference. If the driving concentration degree is equal to or higher than the first reference value or the first reference level, the reference comparison unit 2317 determines that the driving concentration degree satisfies the first reference. On the other hand, if the driving concentration is lower than the first reference value or the first reference level, the reference comparison unit 2317 determines that the driving concentration does not satisfy the first reference.
  • the reference comparison unit 2317 compares the driving concentration estimated by the concentration estimation unit 2316 with the second reference value or the second reference level serving as the second reference. If the driving concentration degree is equal to or higher than the second reference value or the second reference level, the reference comparison unit 2317 determines that the driving concentration degree satisfies the second reference. On the other hand, if the driving concentration is lower than the second reference value or the second reference level, the reference comparison unit 2317 determines that the driving concentration does not satisfy the second reference.
  • the concentration determination device 2 is in the case where the vehicle 1 is traveling on a second road (for example, a road that requires more concentration and attention for driving the vehicle 1 than the first road). Therefore, it is possible to ask the driver for a higher driving concentration than when the vehicle 1 is traveling on the first road.
  • the driver can maintain a more concentrated state of driving when the vehicle 1 is traveling on the second road than when the vehicle 1 is traveling on the first road. Furthermore, the driver does not receive an excessive warning particularly when the vehicle 1 is traveling on the first road.
  • the relationship between the first reference and the second reference used by the reference comparison unit 2317 in step S105 and step S107 is that a predetermined driving concentration is given to the driver at a timing when the second reference is different from the first reference. It may be a relationship that serves as a reference for the following (hereinafter referred to as a second relationship).
  • the concentration degree determination device 2 varies the timing for determining the degree of driving concentration between the first reference applied on the first road and the second reference applied on the second road as follows. That is, on the second road, the concentration degree determination device 2 may determine the driving concentration degree at a frequency higher than that of the first road.
  • the first reference may be configured to determine the driving concentration degree at a predetermined time interval or a predetermined mileage interval.
  • the second reference may be configured to determine the constant driving concentration level.
  • the reference comparison unit 2317 may compare the driving concentration degree estimated by the concentration degree estimation unit 2316 with the reference value or the reference level at the timing that is the first reference. If the driving concentration degree is equal to or higher than the reference value or the reference level, the reference comparison unit 2317 determines that the driving concentration degree satisfies the first reference. On the other hand, if the driving concentration degree is lower than the reference value or the reference level, the reference comparison unit 2317 determines that the driving concentration degree does not satisfy the first reference.
  • the reference comparison unit 2317 may compare the driving concentration degree estimated by the concentration degree estimation unit 2316 with the reference value or the reference level at the timing that is the second reference. If the driving concentration degree is equal to or higher than the reference value or the reference level, the reference comparison unit 2317 determines that the driving concentration degree satisfies the second reference. On the other hand, if the driving concentration degree is lower than the reference value or the reference level, the reference comparison unit 2317 determines that the driving concentration degree does not satisfy the second reference.
  • the concentration determination device 2 can determine the driving concentration at an appropriate timing according to the road environment in which the vehicle 1 is traveling. Furthermore, the concentration level determination device 2 does not output an instruction signal at a timing at which determination of the driving concentration level can be omitted. As a result, the driver can appropriately maintain a state of concentration in driving according to the road environment in which the vehicle 1 is traveling. In addition, the driver does not receive an excessive warning particularly when the vehicle 1 is traveling on the first road.
  • the relationship between the first reference and the second reference used by the reference comparison unit 2317 in step S105 and step S107 is that the predetermined driving concentration continues for a period in which the second reference is longer than the first reference. It may be a relationship that serves as a reference for the driver (hereinafter referred to as a third relationship).
  • the concentration determination device 2 determines the driving concentration on the condition that the driving concentration equal to or higher than the reference value or the reference level continues for a predetermined period.
  • the concentration determination device 2 makes the predetermined period differ between the first reference applied on the first road and the second reference applied on the second road. That is, in the second reference, the predetermined period may be longer than that in the first reference.
  • the reference comparison unit 2317 determines whether the driving concentration degree estimated by the concentration degree estimation unit 2316 is equal to or higher than the reference value or the reference level continuously for the first predetermined period. If the driving concentration continues for the first predetermined period or longer than the reference value or the reference level, the reference comparison unit 2317 determines that the driving concentration satisfies the first reference. On the other hand, if the driving concentration level becomes lower than the reference value or the reference level during the first predetermined period, the reference comparison unit 2317 determines that the driving concentration level does not satisfy the first reference.
  • the reference comparison unit 2317 continuously determines whether the driving concentration estimated by the concentration estimation unit 2316 is equal to or higher than a reference value or a reference level for a second predetermined period different from the first predetermined period. Judge whether or not. If the driving concentration is continuously equal to or higher than the reference value or the reference level for the second predetermined period, the reference comparison unit 2317 determines that the driving concentration satisfies the second reference. On the other hand, if the driving concentration level becomes lower than the reference value or the reference level during the second predetermined period, the reference comparison unit 2317 determines that the driving concentration level does not satisfy the second reference.
  • the concentration determination device 2 when the vehicle 1 is traveling on the second road, the concentration determination device 2 has a predetermined duration that lasts longer than when the vehicle 1 is traveling on the first road. Driving concentration can be requested from the driver.
  • the driver can maintain a more concentrated state of driving when the vehicle 1 is traveling on the second road than when the vehicle 1 is traveling on the first road. Furthermore, the driver does not receive an excessive warning particularly when the vehicle 1 is traveling on the first road.
  • the relationship between the first reference and the second reference used by the reference comparison unit 2317 in step S105 and step S107 is two or more of the first relationship, the second relationship, and the third relationship described above.
  • the relationship may be appropriately combined.
  • the combination of the first relationship and the second relationship is, for example, as follows.
  • the second criterion may be a criterion that requires the driver to have a higher driving concentration than the first criterion at a timing different from the first criterion.
  • a combination of the first relationship and the third relationship is, for example, as follows.
  • the second standard may be a standard that asks the driver that the driving concentration higher than the first standard continues over a longer period than the first standard.
  • a combination of the second relationship and the third relationship is, for example, as follows.
  • the second criterion may be a criterion for obtaining a predetermined degree of driving concentration from the driver over a longer period than the first criterion at a timing different from the first criterion.
  • a combination of the first relationship, the second relationship, and the third relationship is, for example, as follows.
  • the second criterion may be a criterion that requires the driver to have a higher driving concentration than the first criterion over a longer period than the first criterion at a timing different from the first criterion.
  • the concentration determination device 2 selectively uses the first reference and the second reference according to the road environment in which the vehicle 1 is traveling. It is determined whether or not the driver is in a state suitable for driving. Therefore, the concentration degree determination device 2 can ask the driver for a driving concentration degree suitable for the road environment in which the vehicle 1 is traveling. Thereby, the driver can maintain a state where the driver 1 is appropriately concentrated on driving according to the road environment in which the vehicle 1 is traveling. Therefore, driving safety is maintained regardless of the driver's situation.
  • the concentration determination device 2 is configured so that the vehicle 1 is the second even when the driving concentration is the same between the case where the vehicle 1 is traveling on the first road and the case where the vehicle 1 is traveling on the second road.
  • the concentration determination apparatus 2 can reduce the output of an excessive instruction signal particularly when the vehicle 1 is traveling on the first road. This prevents the driver from receiving an excessive warning, particularly when the vehicle 1 is traveling on the first road. The driver can comfortably keep the state concentrated on driving regardless of the road environment in which the vehicle 1 is traveling. Accordingly, driving comfort is maintained regardless of the driver's situation.
  • the concentration determination device 2 can take into account both driving safety and driving comfort.
  • the concentration determination device 2 detects the driver's state using the driver image data captured by the driver camera 15 as monitoring data, and estimates the driving concentration.
  • the monitoring data is not limited to the driver image data.
  • the monitoring data may be, for example, biological data obtained by a biological sensor that monitors the driver of the vehicle 1.
  • the biological sensor is, for example, a pulse wave sensor or a heart rate sensor.
  • the biological sensor is not limited to these as long as it can monitor the driver.
  • the biological sensor may be a contact sensor or a non-contact sensor.
  • the concentration degree determination device 2 can detect the state of the driver from the biological data.
  • the state of the driver detected from the biological data is an index such as a pulse wave or a heartbeat.
  • the monitoring data may be, for example, data obtained by a sensor that measures the strength of the driver's steering wheel 5 installed on the steering wheel 5.
  • the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage.
  • various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, you may combine the component covering different embodiment suitably.
  • the above-described embodiment may be realized by a storage medium such as a ROM (Read Only Memory) that stores a program that causes the processor 231 to perform processing of each unit included in the processor 231.
  • a storage medium such as a ROM (Read Only Memory) that stores a program that causes the processor 231 to perform processing of each unit included in the processor 231.
  • the driving concentration is compared with a second criterion different from the first criterion, When the vehicle travels on the first road and the driving concentration does not satisfy the first standard, or the vehicle travels on the second road and the driving concentration is A processor configured to output an instruction signal instructing execution of assistance to the driver if the second criterion is not satisfied; A memory for storing instructions for operating the processor; A concentration determination device comprising: (Appendix 2) A monitoring data acquisition process for acquiring monitoring data from a sensor for monitoring a driver of the vehicle using at least one processor; Using the at least one processor to estimate the driver's concentration of concentration from the monitoring data; Using the at least one processor, the driving concentration is compared with a first standard when the vehicle is traveling on a first road, and the vehicle has a road environment different from that of the first road.
  • Concentration determination method comprising:

Abstract

La présente invention est conçue pour prendre en compte aussi bien la sécurité de conduite que le confort de conduite. Un dispositif de détermination de niveau de concentration comprend une unité d'acquisition de données de surveillance qui acquiert des données de surveillance de capteurs surveillant un conducteur d'un véhicule ; une unité d'estimation de niveau de concentration qui estime le niveau de concentration de conduite du conducteur sur la base des données de surveillance ; une unité de comparaison de critère qui compare, à un premier critère, le niveau de concentration de conduite lorsque le véhicule roule le long d'une première route, et qui compare, à un deuxième critère qui est différent du premier critère, le niveau de concentration de conduite lorsque le véhicule roule le long d'une deuxième route dont l'environnement de conduite est différent de celui de la première route ; et une unité d'émission de signaux qui émet un signal de commande commandant l'exécution d'assistance au conducteur lorsque le véhicule roule le long de la première route et que le niveau de concentration de conduite ne satisfait pas au premier critère, ou lorsque le véhicule roule le long de la deuxième route et que le niveau de concentration de conduite ne satisfait pas au deuxième critère.
PCT/JP2017/038553 2017-03-14 2017-10-25 Dispositif de détermination de niveau de concentration, procédé de détermination de niveau de concentration, et programme de détermination de niveau de concentration WO2018168046A1 (fr)

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