JP2022142147A5

JP2022142147A5 -

Info

Publication number: JP2022142147A5
Application number: JP2021042178A
Authority: JP
Filing date: 2021-03-16
Publication date: 2024-01-25

Claims

an object information acquisition process (S40) that acquires information about objects around the vehicle according to the output of a sensor (12, 22) that senses objects around the vehicle;
a target object setting process (S50 to S54) for setting a target object to which the driver of the vehicle should pay attention based on information on the object;
image acquisition processing (S60) for acquiring image data of the driver;
Performing a determination process (S14, S16 to S22, S30, S32) in which, when the image data is input and the state in which the target object is not confirmed continues for a value equal to or more than the absentmindedness determination value, it is determined that the vehicle is in a distracted driving state. death,
The distracted driving state is a driving state in which safety confirmation is insufficient when driving the vehicle;
The determination process includes a visual field calculation process (S14), an object confirmation determination process (S16 to S22), and a distracted driving determination process (S30, S32),
The visual field calculation process is a process of calculating the driver's visual field using the image data as input,
The object confirmation determination process is a process in which it is determined that the object has been confirmed when the duration of the target object being in the field of view is equal to or greater than a confirmation determination value,
The absentminded driving determination process is a driving state determination device that determines that the driver is in an absentminded driving state when a state in which it is not determined that confirmation has been made in the object confirmation determination process continues for a confirmation determination value or more .

2. The driving state determining device according to claim 1, wherein the target object is an object with which the vehicle may come into contact in an area above a road surface depending on how the vehicle is driven.

The target object setting process includes an evaluation variable calculation process (S50) and a target object determination process (S52, S54),
The evaluation variable calculation process is a process of calculating the value of an evaluation variable, which is a variable used to evaluate whether or not to use the object as the target object, for each object for which information has been acquired by the object information acquisition process,
The target object determination process is a process of determining whether or not to set the object as the target object according to the value of the evaluation variable of the acquired object,
The driving state determination device according to claim 1 or 2, wherein the value of the evaluation variable is calculated to be a different value depending on the type of the acquired object by the evaluation variable calculation process.

The target object setting process includes an evaluation variable calculation process (S50) and a target object determination process (S52, S54),
The evaluation variable calculation process is a process of calculating the value of an evaluation variable, which is a variable used to evaluate whether or not to use the object as the target object, for each object for which information has been acquired by the object information acquisition process,
The target object determination process is a process of determining whether or not to set the object as the target object according to the value of the evaluation variable of the acquired object,
The value of the evaluation variable is determined by the evaluation variable calculation process to be such that when the relative speed of the acquired object with respect to the vehicle is negative, the value of the evaluation variable is set to the side set to the target object when the relative speed is small than when it is large. The driving state determining device according to any one of claims 1 to 3, wherein the driving state determination device calculates a large value.

The target object setting process includes an evaluation variable calculation process (S50) and a target object determination process (S52, S54),
The evaluation variable calculation process is a process of calculating the value of an evaluation variable, which is a variable used to evaluate whether or not to use the object as the target object, for each object for which information has been acquired by the object information acquisition process,
The target object determination process is a process of determining whether or not to set the object as the target object according to the value of the evaluation variable of the acquired object,
The value of the evaluation variable is calculated by the evaluation variable calculation process to a larger value set to the target object when the distance between the acquired object and the vehicle is small than when it is large. 4. The driving state determination device according to 3 or 4.

Each of the processes in the driving state determination device according to any one of claims 1 to 5,
A driving support device that executes a driving support process for the vehicle using a determination result of the determination process as input.

The driving support process is a process in which the conditions for operating the predetermined hardware (52) for driving support are made more relaxed when it is determined that the driver is in the distracted driving state than when the conditions are not set (S94, S96). The driving support device according to claim 6, comprising:

The driving support process includes a deviation handling process (S102 to S106) of operating a predetermined hardware means in order to deal with the vehicle deviating from the driving lane;
8. The driving support device according to claim 6, wherein the deviation handling process is executed when it is determined that the vehicle is in the distracted driving state when there is a possibility that the vehicle may deviate from the driving lane.

When the driver is operating the brakes, the deviation handling process is executed when there is a possibility that the vehicle deviates from the driving lane, regardless of whether or not it is determined that the driver is in the distracted driving state. The driving support device according to item 8.

an area calculation process (S72) that calculates a driving area of the vehicle based on information on the traveling direction of the vehicle;
When the image data is input and the duration of the state in which the driving area is not confirmed is longer than a predetermined time, a distracted driving is determined to be a distracted driving (S74 to S89);
9. The driving support device according to claim 8, wherein the deviation handling process is executed also when it is determined that the distracted driving is occurring when there is a risk that the vehicle may deviate from the driving lane.

The inattentiveness determination process includes a visual field calculation process (S14) and an area confirmation determination process (S74 to S80),
The visual field calculation process is a process of calculating the driver's visual field using the image data as input,
The driving support according to claim 10, wherein the area confirmation determination process is a process in which it is determined that the driving area has been confirmed when the duration of the driving area in the field of view is equal to or greater than an area gaze determination value. Device.

A driving state determining method comprising the step of executing each of the processes in the driving state determining device according to any one of claims 1 to 5.

A driving state determination program that causes a computer to execute each of the processes in the driving state determining device according to any one of claims 1 to 5.