JP2020117043A - Driver condition determination device, driver condition determination method, driver condition determination program - Google Patents

Abstract

To determine whether a driver is in a hurry or not before traveling a vehicle without fitting new sensors to the vehicle.SOLUTION: A driver situation determination device 10 comprises: plural sensors 12, 14, 16, 18, 20, 22, 24, 26, 28 which detects plural prescribed events occurring in a vehicle; a timer device 10d which measures current time information; a time measurement part 10c which acquires prescribed event information acquired by the sensors, and an occurrence time of the prescribed event from the timer device 10d; and a time storage part 10b which associates the prescribed event acquired from the time measurement part 10c with the occurrence time thereof and stores the same. This determination device calculates a required time between the prescribed events, and determines whether a driver is in a hurry or not by comparison between the required time and a prescribed threshold.SELECTED DRAWING: Figure 1

Description

The present invention relates to a driver status determination device, a driver status determination method, and a driver status determination program.

There is a technique for determining a psychological state such as a driver's impatience or irritability that induces an accident based on a driving state such as an operation during driving or a vehicle trajectory (Patent Documents 1 to 3).

Also, from the perspective that it is too late to judge the psychological state of the driver during driving after having started driving, or that an accident may have occurred, before getting on, for example when leaving home There is a technique for determining whether the driver is in a hurry, is rushed, is impatient, or the like by detecting a mistake that is caused, such as forgetting something, forgetting to lock, etc. Patent Document 4).

Japanese Patent No. 04702070 JP, 2008-192068, A JP, 2010-143362, A Japanese Patent No. 04211841

However, even if the driver is in a hurry, it does not always make mistakes such as lost property before leaving the house and getting into the car, and it is difficult to detect that there is lost property, so it is a reality. However, the driver's impatience cannot always be determined.

The present invention has been made in view of the above problems, and an object thereof is to determine whether or not a driver is in a hurry before traveling the vehicle without attaching new sensors to the vehicle. A driver status determination device, a driver status determination method, and a driver status determination program.

The driver situation determination device 10 according to claim 1 includes a plurality of sensors 12, 14, 16, 18, 20, 22, 24, 26, 28 for detecting a plurality of predetermined events occurring in a vehicle, and current time information. A timer device 10d for measuring the time, predetermined event information acquired by the sensor, a time measuring unit 10c for acquiring the occurrence time of the predetermined event from the timer device 10d, and the predetermined time acquired from the time measuring unit 10c. Of the event and a time storage unit 10b that stores the occurrence time in association with each other, calculates the required time between the predetermined events, and compares the required time with a predetermined threshold value to allow the driver to hurry. The situation of whether or not is determined.

The driver situation determination method according to claim 4, wherein a storage process of storing a plurality of predetermined event information that occurs in a vehicle and an occurrence time of the predetermined event in association with each other, and the stored predetermined event. And a calculation process for calculating a required time between the predetermined events by using the occurrence time of, and comparing the required time with a predetermined threshold value to determine whether the driver is in a hurry or not. judge.

The driver situation determination program according to claim 5 causes the time storage unit 10b to execute a storage process of storing a plurality of pieces of predetermined event information that occur in the vehicle in association with the occurrence times of the predetermined events, The determination unit 10a uses the stored occurrence time of the predetermined event to calculate the required time between the predetermined events, and the driver compares the required time with a predetermined threshold value. And a determination process for determining whether the situation is urgent.

According to the driver status determination device, the driver status determination method, and the driver status determination program described above, the predetermined event information and the event occurrence time are acquired in association with each other by using the existing sensors in the vehicle, and the predetermined event is acquired. By comparing the required time between the time and a predetermined threshold value, it is possible to determine whether or not the driver is in a hurry before driving the vehicle.

FIG. 1 is a block diagram showing a schematic configuration of a driver situation determination system 1 according to an embodiment. The figure which shows the outline of the information which is remembered in the time memory section The figure which shows the outline of an example of the driver situation determination in various situations.

Hereinafter, a driver status determination device, a driver status determination method, and a driver status determination program according to embodiments of the present invention will be described with reference to the drawings. In the following description, the same elements as those described above are designated by the same reference numerals, and the description thereof will be omitted.

The driver status determination system according to the embodiment will be described below. As shown in FIG. 1, the driver situation determination system 1 includes a determination processing device 10 and sensors (12, 14, 16, 18, 20, 22, 24, 26, 28).

The driver status determination system 1 determines the psychological state of the driver, such as hurrying or being impatient, according to the information acquired from the sensors. The determination result is utilized, for example, for automatic driving control by the vehicle automatic driving device, driving assistance control by the vehicle driving assistance device, or the like. For example, when the driver's impatience is detected, it is possible to perform processing such as not turning on the engine, or issuing an alarm such as "Be careful of turning into the left side" when turning at an intersection.

The determination processing device 10 includes a determination unit 10a, a time storage unit 10b, a time measurement unit 10c, a timer device 10d, and a communication unit 10e. The determination unit 10a determines the psychology of the driver's impatience or the like from various event information acquired from the sensors. The sensors detect a plurality of predetermined events occurring in the vehicle as shown below.

The time storage unit 10b executes a storage process of storing a predetermined event, which will be described later, in association with its occurrence time. The time measuring unit 10c associates the predetermined event occurrence information acquired by the sensors with the current time information output from the timer device 10d and associates the occurrence time of the predetermined event with each other, and transmits them to the time storage unit 10b. ..

The timer device 10d has a function of measuring the current time information, receives a request from the time measurement unit 10c when the predetermined event occurrence information described later is obtained, and transmits the time information to the time measurement unit 10c. The communication unit 10e transmits and receives information to and from the sensors, that is, information communication. The timer device 10d may be provided outside.

The driver status determination device 10 that determines the driver status is mainly configured by a microcomputer including a CPU, a ROM, a RAM, an I/O and the like (not shown). Various controls of the determination unit 10a, the time storage unit 10b, the time measurement unit 10c, the timer device 10d, and the communication unit 10e by the driver status determination device 10 are realized by executing a program stored in a ROM, for example.

The driver status determination system 1 includes, as sensors, a door opening/closing detector 12, a seat belt attachment/detachment detector 14, an ignition switch 16, a driver status monitor (hereinafter referred to as DSM) 18, a fingerprint sensor 20, an IC reading device 22, and a seat. The sensor 24, the camera 26, and the temperature sensor 28 are provided. These sensors are connected to the determination processing device 10 by communication lines 41, 42, 43, 44, 45 via the communication devices 30, 32, 34, and transmit the acquired sensor information to the determination processing device 10. .. These sensors are provided in a commercially available vehicle. Note that these sensors are examples, and may include sensors not listed here.

The door opening/closing detection unit 12 is a sensor having a function of detecting opening/closing of a vehicle door, outputs door opening/closing information, and transmits the information to the determination processing device 10. The seat belt attachment/detachment detector 14 is a sensor having a function of detecting attachment/detachment of the seat belt, and outputs the detected attachment/detachment information of the seat belt to the determination processing device 10. The DSM 18 is a device that captures the driver's face with a camera and detects the driver's state by image analysis.

The ignition switch 16 functions as a switch that starts the vehicle engine and also functions as a switch pressing sensor that detects that the ignition switch is pressed. The ignition switch 16 is connected to the communication device 32 via the communication line 43, and the communication device 32 is connected to the determination processing device 10 via the communication line 45. When the ignition switch 16 is pressed, the ignition switch pressing information is transmitted to the determination processing device 10.

The DSM 18 outputs the acquired image and the image information processing result, and transmits it to the determination processing device 10. The fingerprint sensor 20 is a sensor having a function of detecting the fingerprint of the driver, and is installed, for example, on the steering wheel of the driver's seat. The fingerprint sensor 20 can also be used as a steering tactile sensor that detects that the driver has gripped the steering wheel. The fingerprint sensor 20 outputs the detected fingerprint information and the steering grip information, and sends it to the determination processing device 10. The IC reading device 22 has a function of reading a driver's license carried by a driver, an IC chip provided on a smartphone or the like, and detecting an ID or the like stored in the IC chip. The IC reading device 22 outputs the acquired ID information and transmits it to the determination processing device 10.

The seat sensor 24 is, for example, a pressure-sensitive sensor installed on the seat, and is a sensor having a function of detecting the seating by detecting the pressure caused by the driver sitting on the seat. The seat belt attachment/detachment detector 14 detects the attachment/detachment of the seat belt, and transmits it to the determination processing device 10. The camera 26 has a function of acquiring a face image of the driver. The image information detected by the camera 26 is transmitted to the determination processing device 10. The camera 26 can be replaced with a camera provided in the DSM 18. The temperature sensor 28 is a sensor having a function of detecting the temperature inside or outside the vehicle, and transmits the detected temperature information to the determination processing device 10.

The communication lines 41, 42, 43, 44, 45 are in-vehicle networks such as in-vehicle LAN and CAN (registered trademark), and connect the communication devices 30, 32, 34 and the driver status determination device 10 so that data communication is possible.

Next, a driver status determination device, a driver status determination method, and a driver status determination program implemented by the driver status determination system 1 according to the present embodiment will be described.

(initial state)
The initial state of the determination process by the driver situation determination system 1, that is, the state in which the driver has not boarded, is assumed to be in the following state.
(1-1) The driver's seat door is closed, and the door open/close detection unit 12 is in a state of detecting "door closed".
(1-2) The seat belt is detached, and the seat belt attachment/detachment detector 14 is in a state of detecting "seat belt detachment".
(1-3) The ignition switch 16 is not pressed down, and is in the "ignition off" state.
(1-4) Each event stored in the time storage unit 10b, that is, the occurrence time of the driver's operation is cleared, and data is not stored for any event.

(Determining whether the driver is in a hurry)
The determination as to whether or not the driver is in a hurry is performed as follows.
(2-1) When the driver opens the door of the driver's seat, the door open/close detection unit 12 detects an event of "door open", and outputs a detection signal of "door open" indicating that the door is open to the communication line. The communication device 30 which has transmitted the detection signal of “door open” to the communication device 30 via 41 transmits the detection signal of “door open” to the communication unit 10 e via the communication path 45.
(2-2) The communication unit 10e that has received the "door open" detection signal notifies the time measurement unit 10c that the door open detection signal has been received.
(2-3) The time measuring unit 10c that has received the notification that the door open detection signal has been received requests the timer device 10d to transmit the current time.
(2-4) The timer device 10d, which has received the request to transmit the current time, transmits the current time to the time measuring unit 10c.

(2-5) The time measuring unit 10c that has received the current time acquires the time corresponding to a predetermined event “door open” and transmits it to the time storage unit 10b. The time storage unit 10b executes a storage process of storing the "door open" and the occurrence time of the "door open" in association with each other.

(2-6) When the driver gets in the vehicle and closes the door, the door opening/closing detection unit 12 detects a predetermined event of "door closed", and a "door closed" detection signal indicating that the door is closed. Is transmitted to the communication device 30 via the communication line 41. The communication device 30 which has received the detection signal of "door closed" transmits the detection signal of "door closed" to the communication unit 10e via the communication path 45. The communication unit 10e notifies the time measuring unit 10c that the door is closed. The time measuring unit 10c requests the timer device 10d to transmit the current time. The timer device 10d transmits the current time to the time measuring unit 10c. The time measuring unit 10c transmits the occurrence time of “door closed” to the time storage unit 10b, and the time storage unit 10b executes a storage process of storing “door closed” which is a predetermined event and its occurrence time in association with each other. To do.

(2-7) When the driver wears the seat belt, the seat belt attachment/detachment detector 14 detects a predetermined event “seat belt wearing”, and indicates that the seat belt is wearing “seat belt wearing”. The communication device 30 which has transmitted the detection signal of “seat belt” to the communication device 30 through the communication line 42 and has received the detection signal of “seat belt wearing” receives the detection signal of “seat belt wearing” on the communication path 45. It transmits to the communication part 10e via.

The communication unit 10e notifies the time measuring unit 10c that the seat belt wearing has been received. The time measuring unit 10c requests the timer device 10d to transmit the current time. The timer device 10d transmits the current time to the time measuring unit 10c. The time measuring unit 10c transmits the occurrence time of a predetermined event "seat belt wearing" to the time storage unit 10b, and the time storage unit 10b stores the acquired predetermined event "seat belt wearing" and its occurrence time. A storage process of storing in association with each other is executed.

(2-8) When the driver pushes the ignition switch, that is, when the engine is started, the ignition-on detection signal is transmitted to the communication device 32 via the communication line 43, and the ignition-on detection signal is received. Transmits an ignition-on detection signal to the communication unit 10e via the communication path 45. The communication unit 10e notifies the time measuring unit 10c that the ignition is received. The time measuring unit 10c requests the timer device 10d to transmit the current time. The timer device 10d transmits the current time to the time measuring unit 10c. The time measuring unit 10c transmits the occurrence of "ignition on" in the time storage unit 10b and the occurrence time thereof to the time storage unit 10b. The time storage unit 10b executes a storage process of storing the occurrence information of the received predetermined event, i.e., ignition on, in association with the occurrence time.

(2-9) The time measurement unit 10c that has transmitted the ignition-on detection signal and the time of occurrence thereof to the time storage unit 10b continues to notify the determination unit 10a of the ignition-on detection signal.

(2-10) The determination unit 10a, which has received the ignition-on detection signal, acquires the occurrence time of each event recorded in the time storage unit 10b and executes the calculation process of calculating the required time between each event. .. For example, as shown in FIG. 2, when each event and its occurrence time are stored in the time storage unit 10b, "door open-door close 3.5 seconds" "door close-seat belt wear 7". .3 seconds", "3.0 seconds between wearing the seat belt and turning on the ignition", and so on.

(2-11) The determination unit 10a compares the required time between each event and a predetermined threshold value. For example, when the required time between all events falls below the threshold value, the driver hurries up. Judgment processing for judging that the user is out, rushed, or rushed is executed.

In this case, it may be determined that the driver is in a hurry on the basis of the number of events in which the required time is less than the threshold or the required time of the predetermined event is less than a predetermined threshold. On the other hand, the required time between each event and a predetermined threshold value may be compared, and for example, when the required time between all events exceeds the threshold value, it may be determined that the event is not in a hurry. For example, set "threshold between door open and door closed is 5 seconds", "threshold between door closed and seat belt is 10 seconds", and "threshold between seat belt and ignition is 5 seconds" can do. In this case, the time required for each of the above events is less than all of them, so the determination processing device 10 determines that the driver is “in a hurry”.

(2-12) Further, when the driver does not close the door or wears the seatbelt, the time of occurrence of the event in the time storage unit 10b is not recorded, that is, there is no data and is missing. The determination unit 10a determines that the driver is in a hurry so that the driver does not close the door or wears the seat belt, and determines that the driver is in a hurry. In this case, it may be determined to be “in a hurry” based on the number of missing events or the lack of a specific event.

Further, in the present embodiment, the situation of whether or not the driver is in a hurry is determined by the occurrence, presence or absence of a predetermined event at a predetermined timing. In the driver status determination system 1, the determination can be performed by using the occurrence of a predetermined event as a predetermined determination condition or the lack of a predetermined event as a predetermined determination condition. Further, it is possible to determine when a predetermined event occurs as a determination reference time.

For example, various determinations can be made with the timing of ignition ON as the determination reference time. Further, when seating on the seat, gripping the steering wheel, releasing the parking brake, and driving the shift lever into the drive are performed, it is possible to make various determinations by assuming that the driver has a driving intention on condition of the existence of this event.

In FIG. 3, the state in which the ignition switch 16 is pressed, that is, the ignition on is described as “IGON”. For example, as in the situation 1 shown in FIG. 3, when the IGON is performed without seating, without closing the door, and without wearing the seat belt in the state where the door is open, the following determination is made. In this case, the determination processing device 10 determines that the driver has no intention to operate because he/she is not seated, and that the driver is in the IGON state for warming up, or if the air conditioner switch is subsequently turned on, for cooling by the air conditioner, Do not judge that you are in a hurry. In this case, the determination may be made in consideration of the temperature information from the temperature sensor 28.

Further, for example, as in the situation 2, when the door is opened, the seat is open, the door is not closed, the seat belt is not seated, and IGON is present, it is determined that the driver is willing to drive due to the presence of “seating”, and At the reference time, the driver determines that the driver is "in a hurry" based on the fact that the predetermined event is missing, ie, the door is not closed and the seat belt is not worn. In this case, the driver determines that the driver is "in a hurry" regardless of the time required between the events.

After the situation 2, when the situation is changed to the situation 3, that is, for example, the door is closed, but the steering wheel is gripped, the parking brake is released, and the shift lever is put into the drive range without wearing the seat belt. If so, the driver is trying to start running the vehicle in a “hurry” state, so in order to avoid danger, for example, alert the driver, avoid the danger by automatic vehicle control, for example, place the vehicle on the shoulder of the road. It is expected that measures such as retreat operations such as pulling, stopping operations by brakes, and engine stop will be performed.

If the situation 4 is changed to the situation 4 after the situation 2, that is, if the door is closed, the seat belt is fastened, the steering wheel is gripped, the parking brake is released, and the shift lever is in the drive range, the determination processing device 10 operates. , The driver considers that the driver is calm and has a will to drive, and does not judge that the driver is “in a hurry”.

(Modification)
The following modifications can be considered for this embodiment.
The determination by the determination processing device 10 is performed only in the required time between predetermined events, for example, only in the required time between "door open" and "ignition on", and the intermediate events are omitted and the required interval between separated predetermined events is increased. You may make it judge by time.

In addition, by analyzing the state of the driver captured by the seat sensor 24, the fingerprint sensor 20, or the DSM 18 or the camera 26, the driver "seated", "grabbing the steering wheel", "front facing", and other events. May be detected, or the presence or absence of an event may be determined by adding various sensor information thereto.

When making a determination based on the required time between predetermined events, instead of a fixed threshold value, for example, the required time between each event in the past history is recorded and totaled, and the threshold value calculated from the totalized result is used as the determination processing device 10 It may be used for the determination. For example, the average value μ of the required time between predetermined events and the standard deviation σ are calculated, and the threshold value of the required time between predetermined events is set to, for example, (μ-2σ). If the required time of is less than this threshold value, it may be determined to be “in a hurry”.

Further, for example, the driver is identified by the image determination based on the image captured by the DSM 18, the camera 26, the fingerprint determination by the fingerprint sensor 20, the ID is read from the license or the smartphone by the IC reading device 22, and the past stored for each identified driver. The threshold value may be set based on the aggregation of the history required time of (1) to make the determination.

In addition, the time required between predetermined events of many other drivers, the sequence of events, such as the boarding operation sequence, the time required, etc., may be accumulated in a data center (not shown) through a communication network (not shown), and data may be analyzed at the data center. By acquiring the operation sequence pattern and required time etc. typified by, compare this data with the predetermined event when you boarded this time, "I am in a hurry, impatient, panicked compared to other people" etc. May be determined.

In addition, the timer device 10d always transmits the generated time information to the time measurement unit 10c, and the time measurement unit 10c receives the time information and the event information received when the predetermined event occurrence information is acquired from the sensors. May be associated and transmitted to the time storage unit 10b.

Although the present disclosure has been described with reference to examples, it is understood that the present disclosure is not limited to the examples and structures. The present disclosure also includes various modifications and modifications within an equivalent range. In addition, various combinations and forms, and other combinations and forms including only one element, more, or less than them are also within the scope and spirit of the present disclosure.

DESCRIPTION OF SYMBOLS 1... Driver status determination system, 10... Driver status determination device, 10a... Determination part, 10b... Time storage part, 10c... Time measurement part, 10d... Timer device, 12... Door opening/closing detection part (sensor), 14... Seat belt Desorption detector (sensor), 16... Ignition switch (sensor), 18... DSM (sensor), 20... Fingerprint sensor (sensor), 22... IC reading device (sensor), 24... Sheet sensor (sensor), 26... Camera (Sensor), 28... Air temperature sensor (sensor)

Claims (9)

A plurality of sensors (12, 14, 16, 18, 20, 22, 24, 26, 28) for detecting a plurality of predetermined events occurring in the vehicle;
A timer device (10d) for measuring current time information,
Predetermined event information acquired by the sensor, and a time measurement unit (10c) that acquires the occurrence time of the predetermined event from the timer device (10d),
A time storage unit (10b) that stores the predetermined event acquired from the time measurement unit (10c) and its occurrence time in association with each other;
A driver situation determination device that determines a situation in which the driver is in a hurry by calculating a required time between the predetermined events and comparing the required time with a predetermined threshold value. The driver situation determination device according to claim 1, wherein the required time is a required time between the predetermined events that occur apart from each other. The driver situation determination according to claim 1, wherein the predetermined event includes any one of door opening, seating, door closing, seatbelt seating, ignition on, steering grip, parking brake release, or shift lever drive range entering. apparatus. Storage processing for storing a plurality of predetermined event information that occurs in the vehicle and the occurrence time of the predetermined event in association with each other,
Using a stored occurrence time of the predetermined event, a calculation process for calculating a required time between the predetermined events,
A driver status determination method for determining whether or not the driver is in a hurry by comparing the required time with a predetermined threshold value. The time storage unit (10b) is caused to execute a storage process of storing a plurality of predetermined event information generated in the vehicle and the occurrence time of the predetermined event in association with each other,
The determination unit (10a) uses the stored occurrence time of the predetermined event to calculate the required time between the predetermined events and compare the required time with a predetermined threshold value. , A driver status determination program for executing a determination process of determining whether or not the driver is in a hurry. A plurality of sensors (12, 14, 16, 18, 20, 22, 24, 26, 28) for detecting a plurality of predetermined events occurring in the vehicle;
A timer device (10d) for measuring current time information,
Predetermined event information acquired by the sensor, and a time measurement unit (10c) that acquires the occurrence time of the predetermined event from the timer device (10d),
A time storage unit (10b) that stores the predetermined event acquired from the time measurement unit and its occurrence time in association with each other;
A driver status determination device that determines whether or not a driver is in a hurry due to the presence or absence of a predetermined event at a predetermined timing. 7. The driver situation determination device according to claim 6, wherein the predetermined timing is an ignition-on timing, and the predetermined event is a door closing or a seat belt wearing loss. A plurality of predetermined event information occurring in the vehicle, including a storage process for storing the occurrence time of the predetermined event in association with each other,
A driver status determination method for determining whether a driver is in a hurry due to the presence or absence of a predetermined event at a predetermined timing. The time storage unit (10b) is caused to execute a storage process of storing a plurality of predetermined event information generated in the vehicle and the occurrence time of the predetermined event in association with each other,
A driver status determination program that causes a determination unit (10a) to perform determination processing for determining whether or not a driver is in a hurry due to the presence or absence of a predetermined event at a predetermined timing.

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