WO2025203902A1 - Driver monitoring device, driver monitoring method, and program - Google Patents

Abstract

The present invention provides a driver monitoring system, a driver monitoring method, and a program for calculating an index that can be utilized for managing the physical condition of a driver according to driver's driving conditions.　A driver monitoring device (2) is provided with: a mobile object behavior level recognition unit (11) that recognizes the level of a prescribed behavior of a mobile object (100) according to mobile object (100) driving operations performed by a driver; a danger score calculation unit (13) that calculates a danger score relating to driving of the mobile object (100) by the driver on the basis of the level of the prescribed behavior recognized by the mobile object behavior level recognition unit (11); and a physical condition-related index calculation unit (15) that calculates a prescribed index relating to the physical condition of the driver on the basis of the danger score.

Description

Driver monitoring device, driver monitoring method, and program

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

In recent years, efforts to provide access to sustainable transport systems that take into consideration vulnerable transport participants have become more active. To achieve this, we are focusing on research and development into preventive safety technologies to further improve road safety and convenience.
For example, Patent Document 1 discloses a technology that calculates the driver's drowsiness risk based on information obtained from the vehicle driver, calculates the monotonous driving risk based on information about the route the vehicle is traveling, and estimates the time at which the driver's future drowsiness level will exceed a predetermined threshold based on the drowsiness risk and monotonous driving risk.

Japanese Patent Application Laid-Open No. 2019-174693

In preventive safety technology, it is desirable to accurately recognize the driver's physical condition, which affects the driver's cognitive ability and judgment ability, and to provide necessary countermeasures. Therefore, the object of this application is to calculate an index that can be used to manage the driver's physical condition according to the driver's driving situation.
In order to solve the above problems, the present application aims to calculate an index that can be used to manage a driver's physical condition according to the driver's driving situation, thereby further improving traffic safety and contributing to the development of a sustainable transportation system.

This specification includes the entire contents of Japanese Patent Application No. 2024-055486, filed on March 29, 2024.
A first aspect for achieving the above object is a driver monitoring device that includes a mobile body behavior level recognition unit that recognizes the level of a predetermined behavior of the mobile body in accordance with the driving operation of the mobile body by the driver, a risk score calculation unit that calculates a risk score related to the driver's driving of the mobile body based on the level of the predetermined behavior recognized by the mobile body behavior level recognition unit, and a health condition related index calculation unit that calculates a predetermined index related to the driver's health condition based on the risk score.

In the above-mentioned driver monitoring device, the physical condition-related index calculation unit may be configured to calculate, as the predetermined index, a physical condition-related driving risk, which is an index of the driving risk of the mobile object caused by the physical condition of the driver.

In the driver monitoring device, the predetermined behavior may be associated with a type of driving ability of the driver that is expected to affect the level of the predetermined behavior.

In the driver monitoring device, the risk score calculation unit may be configured to calculate the risk score by weighting the levels of multiple types of predetermined behaviors according to the degree of impact they have on the driver's physical condition.

In the above-mentioned driver monitoring device, the risk score calculation unit may calculate the risk score based on the level of the predetermined behavior recognized by the mobile object behavior level recognition unit during a predetermined measurement period, and may include a risk score information accumulation unit that stores the multiple risk scores calculated by the risk score calculation unit for each measurement period in a memory unit, and the physical condition-related index calculation unit may calculate the predetermined index based on the multiple risk scores stored in the memory unit.

In the above-mentioned driver monitoring device, the physical condition-related index calculation unit may be configured to calculate the degree of variation among the multiple risk scores stored in the memory unit as the predetermined index, and may be configured to include an advice notification unit that outputs physical condition advice information that notifies advice regarding the driver's physical condition from a notification device used by the driver when the degree of variation is equal to or greater than a predetermined degree.

The driver monitoring device may be configured to include a biometric information acquisition unit that acquires biometric information of the driver, and the physical condition-related index calculation unit that calculates the predetermined index based on the risk score and the biometric information.

The driver monitoring device may also be configured to include an advice notification unit that outputs driving advice information from a notification device used by the driver when the driving risk due to physical condition calculated by the physical condition-related index calculation unit is at or above a predetermined level, providing advice regarding driving to the driver.

In the above-mentioned driver monitoring device, the advice notification unit may be configured to output the driving advice information from the notification device when the driver is driving the vehicle and the driving risk due to physical condition calculated by the physical condition-related index calculation unit is equal to or greater than a predetermined level, and to output physical condition advice information that notifies advice regarding the driver's physical condition from the notification device when the driver is not driving the vehicle.

In the driver monitoring device, the advice notification unit may be configured to change the output mode of the driving advice information and the physical condition advice information depending on the level of the driving risk caused by the physical condition calculated by the physical condition-related index calculation unit.

A second aspect for achieving the above object is a driver monitoring method executed by a computer, which includes a mobile object behavior level recognition step for recognizing the level of a predetermined behavior of the mobile object in accordance with the driving operation of the mobile object by the driver, a risk score calculation step for calculating a risk score related to the driving of the mobile object by the driver based on the level of the predetermined behavior recognized in the mobile object behavior level recognition step, and a physical condition-related index calculation step for calculating a predetermined index related to the physical condition of the driver based on the risk score.

A third aspect for achieving the above object is a program that causes a computer to function as a mobile object behavior level recognition unit that recognizes the level of a predetermined behavior of the mobile object in response to the driving operation of the mobile object by the driver, a risk score calculation unit that calculates a risk score related to the driver's driving of the mobile object based on the level of the predetermined behavior recognized by the mobile object behavior level recognition unit, and a health-related index calculation unit that calculates a predetermined index related to the driver's health condition based on the risk score.

The above-mentioned driver monitoring device, driver monitoring method, and program make it possible to calculate indicators that can be used to manage the driver's physical condition, depending on the driver's driving conditions.

FIG. 1 is an explanatory diagram of how a driver monitoring device is used. FIG. 2 is a diagram showing the configuration of the driver monitoring device. FIG. 3 is an explanatory diagram of the correspondence between components of driving-related abilities, advice items, and risk scores. FIG. 4 is an explanatory diagram of the transition of the risk score and the probability density of the risk score. FIG. 5 is a flowchart of the driver monitoring process.

[1. Usage of the driver monitoring device]
A usage mode of a driver monitoring device 2 of this embodiment will be described with reference to Figure 1. The driver monitoring device 2 is configured as a function of a communication terminal 1 used by a driver D of a vehicle 100. The communication terminal 1 is a smartphone, a mobile phone, a tablet terminal, or the like. The communication terminal 1 is attached to a terminal holder 150 provided on the vehicle 100. The vehicle 100 corresponds to the mobile body of the present disclosure. The mobile body of the present disclosure may be an aircraft, a ship, or the like other than a vehicle.

Vehicle 100 is equipped with an ECU (Electronic Control Unit) 110 that controls the operation of vehicle 100, a communication unit 120, a navigation device 121, a front camera 130 that captures images in front of vehicle 100, a driver monitor camera 131 that captures images of driver D, a display 132, speakers 133a and 133b, an acceleration sensor 134, etc. ECU 110 communicates with communication terminal 1 via communication unit 120. Vehicle 100 is equipped with a steering wheel 140, an accelerator pedal 141, a brake pedal, etc. as driving operation parts.

The driver monitoring device 2 uses an acceleration sensor built into the communication terminal 1 to recognize the behavior of the vehicle 100, which changes in response to the driver D's operation of the steering wheel 140, accelerator pedal 141, and brake pedal 142. The driver monitoring device 2 then calculates a risk score for the driver D's driving of the vehicle 100 based on the recognized predetermined behavior of the vehicle 100.

The driver monitoring device 2 displays driving advice information that provides advice regarding driver D's driving and physical condition advice information that provides advice regarding driver D's physical condition on the display of the communication terminal 1 according to the risk score, thereby supporting driver D's management of his driving skills and physical condition.

2. Configuration of the driver monitoring device
The configuration of the driver monitoring device 2 will be described with reference to Fig. 2. The communication terminal 1 having the functions of the driver monitoring device 2 includes a control unit 3 having a processor 10 and a memory 20, a communication unit 30, a camera 31, an acceleration sensor 32, a GNSS (Global Navigation Satellite System) sensor 33, a display 34, and a speaker 35.

The communication unit 30 performs short-range wireless communication using specifications such as Bluetooth (registered trademark) and UWB (Ultra Wide Band) between the vehicle 100 and the wearable device 160 (smart watch, etc.) worn by the driver D. The communication unit 30 also communicates with the traffic information server 210, vehicle management server 211, etc. via the communication network 200.

Camera 31 captures an image of driver D when communication terminal 1 is attached to terminal holder 150 (see Figure 1). Acceleration sensor 32 detects, for example, six axes (acceleration in each of the longitudinal, lateral, and vertical directions, and angular velocity about each axis). GNSS sensor 33 detects the position of communication terminal 1. When communication terminal 1 is attached to terminal holder 150, the position detected by GNSS sensor 33 becomes the current position of vehicle 100. Display 34 is a touch panel, and driver D can use touch operations on display 34 to instruct use and stop of functions of driver monitoring device 2.

Memory 20 stores application program 21 for driver monitoring device 2 and risk score time series data 22 in which risk scores are recorded in chronological order. By loading and executing program 21, processor 10 functions as a mobile object behavior level recognition unit 11, biometric information acquisition unit 12, risk score calculation unit 13, risk score information storage unit 14, physical condition-related index calculation unit 15, and advice notification unit 16.

The processing performed by the mobile object behavior level recognition unit 11 corresponds to the mobile object behavior recognition step in the driver monitoring method of the present disclosure, and the processing performed by the risk score calculation unit 13 corresponds to the risk score calculation step in the driver monitoring method of the present disclosure. The processing performed by the physical condition-related index calculation unit 15 corresponds to the physical condition-related index calculation step in the driver monitoring method of the present disclosure.

The mobile object behavior level recognition unit 11 recognizes the acceleration of the vehicle 100 based on the detection signal of the acceleration sensor 32. In addition, the mobile object behavior level recognition unit 11 recognizes the departure and stopping of the vehicle 100 and the condition of the road on which the vehicle 100 is traveling based on the position of the vehicle 100 detected by the GNSS sensor 33 and the map data Mad received and acquired from the traffic information server 210.

Then, based on the acceleration of the vehicle 100 and the conditions of the road on which the vehicle 100 is traveling, the mobile body behavior level recognition unit 11 recognizes the levels of the following components of danger risk: first element: acceleration when starting; second element: deceleration when stopping; third element: lateral G (centrifugal acceleration) when turning right or left; and fourth element: lateral G when traveling on straight roads and winding roads. Here, starting, stopping, turning right or left, and left and right sway when traveling on straight roads and winding roads correspond to the predetermined behavior of the mobile body disclosed herein.

Figure 3 shows the correspondence between a person's driving abilities, advice items for the driver, and components of the risk score. As shown in Figure 3, the predetermined behaviors corresponding to the first to fourth elements are associated with the types of driving abilities (planning, perception, attention, judgment, operation) that are assumed to affect the level of the predetermined behavior.

The biometric information acquisition unit 12 acquires the facial image of driver D captured by the camera 31 as biometric information of driver D, and receives and acquires biometric information Cmd transmitted from the wearable device 160. The biometric information Cmd indicates detected values of driver D, such as heart rate, blood pressure, and body temperature, detected by a vital sensor provided in the wearable device 160. Note that the biometric information acquisition unit 12 may also receive and acquire from the vehicle 100 an image of driver D captured by the driver monitor camera 131 of the vehicle 100, and detected information such as heart rate, blood pressure, and posture detected by a vital sensor provided in the vehicle 100.

The risk score calculation unit 13 stores the levels of the first to fourth elements recognized by the mobile body behavior level recognition unit 11 on a daily basis in the memory 20 while the vehicle 100 is traveling. Then, the risk score calculation unit 13 calculates a risk score F(a, b) from the stored measurement data of the levels of the first to fourth elements on a daily basis using the following formula (1).
where F(a, b): danger score, _a1 : average acceleration at starting, α1: weighting coefficient for _a1 , _b1 : standard deviation of acceleration at starting, _β1 : weighting coefficient for _b1 , _a2 : average after deceleration at stopping, _α2 : weighting coefficient for _a2 , _b2 : standard deviation of deceleration at stopping, _β2 : weighting coefficient for _b2 , _a3 : average value of lateral G when turning right or left, _α3 : weighting coefficient for _a3 , _b3 : standard deviation of lateral G when turning right or left, _β3 : weighting coefficient for _b3 , _a4 : average value of lateral G on straight and winding roads, _α4 : weighting coefficient _{for a4} , _b4 : standard deviation of lateral G on straight and winding roads, _β4 : weighting coefficient for _b4 .
The weighting coefficients α ₁ to α ₄ and β ₁ to β ₄ are set according to the degree of influence on the physical condition of the driver D.

Furthermore, the biometric information of driver D acquired by the biometric information acquisition unit 12 may be used as a component for calculating the risk score. In this case, an element regarding the detection level of each piece of biometric information is added to (1) above.

The risk score information storage unit 14 records and saves information on the risk score F(a, b) calculated by the risk score calculation unit 13 in a daily time series as risk score time series data 22. A1 in Figure 4 is a schematic diagram showing changes in the risk score in a daily time series, with the vertical axis representing the risk score and the horizontal axis representing the measurement date.

The physical condition-related index calculation unit 15 calculates the probability density shown in A2 of Figure 4 as the physical condition-related driving risk of the risk score for a predetermined judgment period (e.g., one month) recorded in the risk score time series data 22. A2 of Figure 4 is a graph with the vertical axis set to the risk score and the horizontal axis set to the probability distribution. The limit risk score of A2 is the judgment value at which the physical condition-related driving risk (area of the shaded area) becomes the limit risk level. The advice notification unit 16 displays driving advice information and physical condition advice information on the display 34, as described above.

[3. Driver Monitor Processing]
The steps of the driver monitoring process executed by the driver monitoring device 2 will be described with reference to the flowchart shown in Figure 5. In step S1, the mobile object behavior level recognition unit 11 measures the levels of the first to fourth elements (for one day) used to calculate the risk score F(a, b) using the above formula (1). In the following step S2, the risk score calculation unit 13 calculates a risk score using the above formula (1) based on the measured values of the levels of the first to fourth elements for one day measured by the mobile object behavior level recognition unit 11. In addition, the risk score information accumulation unit 14 records information on the risk score calculated by the risk score calculation unit in the risk score time-series data 22 stored in the memory 20.

In the next step S3, the health-related index calculation unit 15 proceeds to step S4 when risk scores for the judgment period (e.g., one month) have been recorded in the risk score time series data 22, and proceeds to step S1 when risk scores for the judgment period have not yet been recorded in the risk score time series data 22.

In step S4, the health-related index calculation unit 15 calculates the degree of variation in the risk scores for the judgment period. The degree of variation is, for example, a standard deviation, and corresponds to the health-related index of the present disclosure. In the following step S5, the advice notification unit 16 determines whether the degree of variation in the risk scores is equal to or greater than a predetermined degree.

Then, if the degree of variation in the risk scores is equal to or greater than a predetermined degree, the advice notification unit 16 proceeds to step S10, and if the degree of variation in the risk scores is less than the predetermined degree, the advice notification unit 16 proceeds to step S6. In step S10, the advice notification unit 16 displays physical condition advice information on the display 34 and proceeds to step S6. Here, if the degree of variation in the risk scores is equal to or greater than a predetermined degree, there is a large inconsistency in driver D's daily driving, and the driver's physical condition is suspected to be poor. Therefore, by displaying physical condition advice information and encouraging driver D to take measures to improve his or her physical condition, it is possible to maintain driver D's good physical condition and ensure safe driving.

In step S6, the physical condition-related index calculation unit 15 calculates the area of the range above the limit score (the shaded area) as the physical condition-related driving risk, as shown in A2 of Figure 4. The physical condition-related driving risk corresponds to the physical condition-related index of the present disclosure. In the following step S7, the advice notification unit 16 determines whether the physical condition-related driving risk is above the judgment level. If the physical condition-related driving risk is above the judgment level, the advice notification unit 16 proceeds to step S20, and if the physical condition-related driving risk is below the judgment value, the advice notification unit 16 proceeds to step S8.

In step S20, the advice notification unit 16 determines whether the vehicle 100 is being driven. Based on the communication status between the vehicle 100 and the communication terminal 1, the advice notification unit 16 recognizes whether the communication terminal 1 is being used inside the vehicle 100, and if it recognizes that the communication terminal 1 is being used inside the vehicle 100, it determines whether the vehicle 100 is being driven based on whether there is a change in the position detected by the GNSS sensor 33.

If the vehicle 100 is being driven, the advice notification unit 16 proceeds to step S22; if the vehicle 100 is not being driven, the advice notification unit 16 proceeds to step S21. In step S22, the advice notification unit 16 displays driving advice information corresponding to the driving risk due to physical condition on the display 34 to alert the driver D, and the process proceeds to step S8. In step S21, the advice notification unit 16 displays physical condition advice information corresponding to the driving risk due to physical condition on the display 34 to give advice to the driver D to improve their physical condition, and the process proceeds to step S8.

3. Other Embodiments
In the above embodiment, the health-related index calculation unit 15 calculated the degree of variation in the danger score in step S4 of Figure 5 as a predetermined index related to the health of driver D of the present disclosure, and calculated the health-related driving risk in step S6 of Figure 5, but the predetermined index may also be calculated by other calculation processing.

In the above embodiment, the advice notification unit 16 is provided and displays physical condition advice information and driving advice information on the display 34, but it is also possible to display only one of the physical condition advice information and driving advice information. Furthermore, the physical condition advice information and driving advice information may be output as audio from the speaker 35 rather than being displayed on the display 34, or in addition to being displayed on the display 34.

In the above embodiment, the driver monitoring device 2 was configured as a function of the communication terminal 1. In another embodiment, the driver monitoring device of the present disclosure may be configured as a function of an on-board device such as the ECU 110 provided in the vehicle 100, or as a dedicated on-board device. In this case, the on-board device measures the components of the risk score using the acceleration sensor 134 provided in the vehicle 100, and displays physical condition advice information and driving advice information on the display 132.

The driver monitoring device of the present disclosure may also be configured as a function of a server such as the vehicle management server 211. In this case, the server is configured to measure the components of the risk score by receiving and acquiring acceleration detection data detected by the vehicle 100 or communication terminal 1 via the communication network 200, and to transmit physical condition advice information and driving advice information to the vehicle 100 or communication terminal 1.

Note that Figure 2 is a schematic diagram showing the configuration of the driver monitoring device 2 divided by main processing content to facilitate understanding of the present invention, and the configuration of the driver monitoring device 2 may also be divided into other categories. Furthermore, the processing of each component may be performed by a single hardware unit or multiple hardware units. Furthermore, the processing of each component shown in Figure 5 may be performed by a single program or multiple programs.

4. Configurations supported by the above embodiment
The above embodiment is a specific example of the following configuration.

(Configuration 1) A driver monitoring device comprising: a mobile body behavior level recognition unit that recognizes the level of a predetermined behavior of a mobile body in accordance with the driving operation of the mobile body by a driver; a risk score calculation unit that calculates a risk score related to the driving of the mobile body by the driver based on the level of the predetermined behavior recognized by the mobile body behavior level recognition unit; and a health condition related index calculation unit that calculates a predetermined index related to the driver's health condition based on the risk score.
According to the driver monitoring device of configuration 1, by recognizing the level of a predetermined behavior of a moving body according to the driving situation of the driver and calculating a risk score, it is possible to calculate an index that can be used to manage the driver's physical condition.

(Configuration 2) The driver monitoring device according to Configuration 1, wherein the physical condition-related index calculation unit calculates, as the predetermined index, a physical condition-attributed driving risk, which is an index of the driving risk of the moving body caused by the physical condition of the driver.
According to the driver monitoring device of configuration 2, it is possible to calculate a driving risk attributable to physical condition, which can be used as an index of the driver's driving risk.

(Configuration 3) The driver monitoring device according to Configuration 1 or 2, wherein the predetermined behavior is associated with a type of driving ability of the driver that is assumed to affect the level of the predetermined behavior.
According to the driver monitoring device of configuration 3, by adopting predetermined behaviors associated with driving-related abilities that change depending on the driver's physical condition, a risk score based on the driver's physical condition can be calculated.

(Configuration 4) A driver monitoring device described in any one of configurations 1 to 3, in which the risk score calculation unit calculates the risk score by weighting the levels of multiple types of the specified behavior according to the degree of impact on the driver's physical condition.
According to the driver monitoring device, by weighting according to the degree of influence on the driver's physical condition, it is possible to increase the correlation between the driver's physical condition and the risk score.

(Configuration 5) A driver monitoring device described in any one of configurations 1 to 4, wherein the risk score calculation unit calculates the risk score based on the level of the specified behavior recognized by the mobile body behavior level recognition unit during a specified measurement period, and includes a risk score information storage unit that stores the multiple risk scores calculated by the risk score calculation unit for each measurement period in a memory unit, and the physical condition-related index calculation unit calculates the specified index based on the multiple risk scores stored in the memory unit.
According to the driver monitoring device of configuration 5, it is possible to calculate the predetermined index while suppressing the influence of sudden changes in the physical condition of the driver during the measurement period.

(Configuration 6) The driver monitoring device described in Configuration 5 is equipped with an advice notification unit, in which the physical condition-related index calculation unit calculates the degree of variation of the multiple risk scores stored in the memory unit as the specified index, and when the degree of variation is greater than or equal to a specified degree, outputs physical condition advice information that notifies advice regarding the driver's physical condition from an alarm device used by the driver.
According to the driver monitoring device of configuration 6, when the degree of variation in the danger score is large and it is assumed that the driver's physical condition is unstable, the driver can be encouraged to improve his or her physical condition by providing physical condition advice information.

(Configuration 7) A driver monitoring device described in any one of configurations 1 to 6, which is provided with a biometric information acquisition unit that acquires biometric information of the driver, and the health-related index calculation unit calculates the specified index based on the risk score and the biometric information.
According to the driver monitoring device of configuration 7, by using the driver's biological information, it is possible to increase the correlation between the driver's physical condition and the predetermined index.

(Configuration 8) A driver monitoring device as described in Configuration 2, which is equipped with an advice notification unit that outputs driving advice information that notifies the driver of driving advice from an alarm device used by the driver when the driving risk due to physical condition calculated by the physical condition-related index calculation unit is at or above a predetermined level.
According to the driver monitoring device of configuration 8, when the driver's driving ability is predicted to decline due to an increase in driving risk caused by physical condition, the driver can be alerted by providing driving advice information.

(Configuration 9) A driver monitoring device as described in Configuration 8, wherein the advice notification unit outputs the driving advice information from the notification device when the moving body is being driven and the driving risk due to physical condition calculated by the physical condition-related index calculation unit is at or above a predetermined level, and when the moving body is not being driven, outputs physical condition advice information from the notification device that notifies advice regarding the driver's physical condition.
According to the driver monitoring device of configuration 9, when the driver is driving, advice regarding driving is given priority, and when the driver is not driving, advice regarding physical condition is given priority.

(Configuration 10) A driver monitoring device as described in Configuration 9, in which the advice notification unit changes the output mode of the driving advice information and the physical condition advice information depending on the level of the driving risk caused by the physical condition calculated by the physical condition-related index calculation unit.
According to the driver monitoring device of configuration 10, by changing the output mode, the driver can be made aware of a change in the level of driving risk caused by physical condition.

(Configuration 11) A driver monitoring method executed by a computer, comprising: a mobile body behavior level recognition step for recognizing a level of a predetermined behavior of a mobile body in accordance with the driving operation of the mobile body by the driver; a risk score calculation step for calculating a risk score related to the driving of the mobile body by the driver based on the level of the predetermined behavior recognized by the mobile body behavior level recognition step; and a health condition related index calculation step for calculating a predetermined index related to the driver's health condition based on the risk score.
By executing the driver monitoring method of configuration 11 by a computer, the same effects as those of the driver monitoring device of configuration 1 can be obtained.

(Configuration 12) A program that causes a computer to function as a mobile body behavior level recognition unit that recognizes the level of a predetermined behavior of a mobile body in accordance with the driving operation of the mobile body by the driver, a risk score calculation unit that calculates a risk score related to the driver's driving of the mobile body based on the level of the predetermined behavior recognized by the mobile body behavior level recognition unit, and a health condition related index calculation unit that calculates a predetermined index related to the driver's health condition based on the risk score.
The configuration of the driver monitoring device of configuration 1 can be realized by executing the program of configuration 12 by a computer.

The driver monitoring device, driver monitoring method, and program disclosed herein can be used to calculate indicators that can be used to manage the driver's physical condition, depending on the driver's driving conditions.

1...Communication terminal, 2...Driver monitoring device, 10...Processor, 11...Mobile object behavior level recognition unit, 12...Biometric information acquisition unit, 13...Danger score calculation unit, 14...Danger score information storage unit, 15...Physical condition related index calculation unit, 16...Advice notification unit, 20...Memory, 21...Program, 22...Danger score time series data, 30...Communication unit, 31...Camera, 32...Acceleration sensor, 33...GNSS sensor, 34...Display, 35...Speaker, 100...Vehicle, 110...ECU, 120...Communication unit, 121...Navigation device, 130...Front camera, 131...Driver monitoring camera, 132...Display, 133a, 133b...Speakers, 150...Terminal holder, 160...Wearable device, 200...Communication network, 210...Traffic information server, 211...Vehicle management server, D...Driver.

Claims (12)

a mobile object behavior level recognition unit that recognizes a level of a predetermined behavior of the mobile object in accordance with a driving operation of the mobile object by a driver;
a risk score calculation unit that calculates a risk score related to the driving of the moving object by the driver based on the level of the predetermined behavior recognized by the moving object behavior level recognition unit;
a physical condition-related index calculation unit that calculates a predetermined index related to the physical condition of the driver based on the risk score;
A driver monitoring device comprising: The driver monitoring device according to claim 1 , wherein the physical condition-related index calculation unit calculates, as the predetermined index, a physical condition-related driving risk that is an index of a driving risk of the mobile object that is caused by the physical condition of the driver. The driver monitoring device according to claim 1 or 2, wherein the predetermined behavior is associated with a type of driving ability of the driver that is assumed to affect a level of the predetermined behavior. The driver monitoring device according to claim 1 or 2, wherein the risk score calculation unit calculates the risk score by weighting the levels of the plurality of types of predetermined behaviors according to the degree of influence on the physical condition of the driver. the risk score calculation unit calculates the risk score based on the level of the predetermined behavior recognized by the mobile object behavior level recognition unit during a predetermined measurement period;
A risk score information storage unit stores the risk scores calculated for each measurement period by the risk score calculation unit in a storage unit,
The driver monitoring device according to claim 1 or 2, wherein the physical condition-related index calculation unit calculates the predetermined index based on a plurality of the risk scores stored in the storage unit. the physical condition-related index calculation unit calculates, as the predetermined index, a degree of variation of the plurality of risk scores stored in the storage unit;
The driver monitoring device according to claim 5, further comprising an advice notification unit that outputs health advice information for notifying advice regarding the driver's health condition from a notification device used by the driver when the degree of variation is equal to or greater than a predetermined degree. a biometric information acquisition unit that acquires biometric information of the driver,
The driver monitoring device according to claim 1 or 2, wherein the physical condition-related index calculation unit calculates the predetermined index based on the risk score and the biological information. 3. The driver monitoring device according to claim 2, further comprising an advice notification unit that outputs driving advice information that notifies the driver of driving advice from a notification device used by the driver when the driving risk due to physical condition calculated by the physical condition-related index calculation unit is equal to or higher than a predetermined level. The driver monitoring device of claim 8, wherein the advice notification unit outputs the driving advice information from the notification device when the moving body is being driven and the driving risk due to physical condition calculated by the physical condition-related index calculation unit is equal to or higher than a predetermined level, and outputs physical condition advice information that notifies advice regarding the driver's physical condition from the notification device when the moving body is not being driven. The driver monitoring device according to claim 9 , wherein the advice notification unit changes an output mode of the driving advice information and the physical condition advice information depending on the level of the driving risk due to physical condition calculated by the physical condition-related index calculation unit. 1. A computer-implemented driver monitoring method, comprising:
a mobile object behavior level recognition step of recognizing a level of a predetermined behavior of the mobile object in accordance with a driving operation of the mobile object by a driver;
a risk score calculation step of calculating a risk score related to the driving of the moving object by the driver based on the level of the predetermined behavior recognized in the moving object behavior level recognition step;
a physical condition-related index calculation step of calculating a predetermined index related to the physical condition of the driver based on the risk score;
A driver monitoring method comprising: Computer,
a mobile object behavior level recognition unit that recognizes a level of a predetermined behavior of the mobile object in accordance with a driving operation of the mobile object by a driver;
a risk score calculation unit that calculates a risk score related to the driving of the moving object by the driver based on the level of the predetermined behavior recognized by the moving object behavior level recognition unit;
a physical condition-related index calculation unit that calculates a predetermined index related to the physical condition of the driver based on the risk score;
A program that makes it work.