JP2018205794A - Information processing system, operation support system, information processing method, and computer program - Google Patents

Abstract

To determine a stress level where a change of vehicle behaviors influences on an occupant.SOLUTION: An information processing system 10 comprises: a communication device 13 for receiving, from a vehicle 20, the moment that is caused by a change of the behaviors of the vehicle 20 to act against the vehicle 20; a memory unit 12 for memorizing set information 120 that corresponds the cumulative values of the moment per unit time to the stress levels an occupant of the vehicle 20 suffers; and an evaluation program 110 for evaluating the stress levels by referring to the set information 120 from the cumulative values of the moment per unit time.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an information processing system, a driving support system, an information processing method, and a computer program.

  As one of route search algorithms in navigation devices, for example, an algorithm called Dijkstra method is known. According to this algorithm, the shortest route can be efficiently selected from a plurality of routes from the departure point to the destination. Although the shortest route is convenient for reaching the destination in the shortest time, it is not always a comfortable route for the vehicle occupant. For example, roads that are dark and have poor visibility, or roads with poor road surface conditions that cause vehicle vibrations and vibrations, may cause discomfort to vehicle occupants. In view of such circumstances, Japanese Patent Application Laid-Open No. 2013-068521 proposes a navigation device that detects the number of times of braking or the number of times of pushing up when the vehicle is traveling and guides a route with good comfort.

Japanese Unexamined Patent Publication No. 2013-068521

  However, while the number of times of braking and the number of push-ups when the vehicle is running can cause discomfort to the vehicle occupant, driving discomfort is essentially dependent on the degree of load applied to the vehicle occupant. It should be evaluated. For example, even if the number of brakes and the number of push-ups during traveling of the vehicle are the same, the load applied to the vehicle occupant varies depending on the traveling speed. The faster the traveling speed, the greater the load applied to the occupant during braking or pushing up. If the load on the occupant increases, it may induce motion sickness or cause irritation. In order to realize a comfortable driving environment, it is desirable to determine the degree of stress applied to the occupant by the change in the behavior of the vehicle.

  Therefore, an object of the present invention is to determine the degree of stress that a change in the behavior of a vehicle gives to an occupant.

  In order to solve the above-described problem, an information processing system according to the present invention includes a communication device that receives from a vehicle a moment that acts on the vehicle due to a change in the behavior of the vehicle, a cumulative value of the moment per unit time, and the vehicle A storage device that stores setting information for associating the stress level received by the passenger, and an evaluation unit that evaluates the stress level by referring to the setting information from the accumulated value of moments per unit time.

  According to the information processing system according to the present invention, it is possible to determine the degree of stress applied to the occupant by the change in the behavior of the vehicle.

It is explanatory drawing which shows the information processing system concerning Embodiment 1 of this invention, and the structure of a vehicle. It is explanatory drawing of an example of the setting information regarding Embodiment 1 of this invention. The graph which calculated | required the relationship between the cumulative value of the rolling moment which acts on a vehicle per unit time, and a comfort level by regression analysis is shown. The graph which calculated | required the relationship between the cumulative value of the pitching moment which acts on a vehicle per unit time, and a comfort level by regression analysis is shown. The graph which calculated | required the relationship between the cumulative value of the yawing moment which acts on a vehicle per unit time, and a comfort level by regression analysis is shown. It is a flowchart which shows the flow of a process of the information processing method concerning Embodiment 1 of this invention. It is explanatory drawing which shows the information processing system concerning Embodiment 2 of this invention, and the structure of a vehicle.

Embodiments of the present invention will be described below with reference to the drawings. Here, the same code | symbol shall show the same component, and the overlapping description is abbreviate | omitted.
FIG. 1 is an explanatory diagram illustrating configurations of an information processing system 10 and a vehicle 20 according to the first embodiment of the present invention. The plurality of vehicles 20 are connected to the information processing system 10 through the communication network 60. The information processing system 10 is a computer that performs various types of information processing to support driving of each of the plurality of vehicles 20, and is also connected to the weather information server 30, the traffic information server 40, and the infrastructure facility 50 through the communication network 60. doing. Details of various information processing performed by the information processing system 10 will be described later.

  The vehicle 20 is equipped with a driving support system 200 that supports driving of the vehicle 20 while communicating with the information processing system 10. The vehicle 20 may be a four-wheeled vehicle (for example, a normal vehicle, a small vehicle, a light vehicle, a large special vehicle, a small special vehicle, etc.), or a two-wheeled vehicle (for example, a normal motorcycle, a small motorcycle, a prime mover). (E.g. bicycle).

  The driving support system 200 includes a communication device 220, a control device 230, a vehicle behavior detection sensor 240, and a counter 250.

  The communication device 220 controls communication between the driving support system 200 and the information processing system 10 through the communication network 60. The communication network 60 is a communication network in which, for example, a wireless network (for example, a mobile communication network) and a wired network (for example, a short-range communication network, a wide area communication network, or a value-added communication network) are mixed.

  The control device 230 is an electronic control unit including a processor 231 and a storage device 232 as hardware resources. The processor 231 controls the operation of each part of the vehicle 20 by interpreting and executing the computer program 260 stored in the storage device 232. The computer program 260 includes an automatic operation control program 270 and an in-vehicle device control program 280. The storage device 232 is a computer-readable recording medium such as a hard disk drive, a solid state drive, a memory card, an optical disk drive, or a semiconductor memory. The semiconductor memory may be a volatile memory or a non-volatile memory.

  The vehicle behavior detection sensor 240 detects the behavior of the vehicle 20. The basic behavior of the vehicle 20 includes four behaviors of “acceleration operation”, “deceleration operation”, “constant speed operation”, and “stop operation”, and in addition to these, “rolling” and “pitching”. , And “Yawing”. The rotational behavior means a rotational movement around the front / rear / right / left / up / down axis passing through the center of gravity of the vehicle 20.

  Rolling means, for example, a rotational movement around the front and rear axes of the vehicle 20 such that the vehicle 20 tilts to one side when turning a curve. The rolling moment that causes the vehicle 20 to roll may cause physical stress on the semicircular canal (first half canal, second half canal, and outer half canal) of the occupant (driver or passenger) of the vehicle 20.

  Pitching means, for example, a rotational movement around the left and right axes of the vehicle 20 such that the load moves forward of the vehicle 20 when decelerating and the load moves rearward of the vehicle 20 when accelerating. . The pitching moment that causes the vehicle 20 to pitch may cause physical stress on the semicircular canal of the occupant of the vehicle 20.

  Yawing means a rotational movement around the vertical axis of the vehicle 20. The yawing moment that causes the vehicle 20 to yaw may give physical stress to the semicircular canal of the occupant of the vehicle 20.

  In addition to this, for example, due to a change in behavior of the vehicle 20 such as “bouncing”, “harshness”, and “jerk”, a moment acts on the front, rear, left, right, top, and bottom axes passing through the center of gravity of the vehicle 20. May cause physical stress on the occupant's semicircular canal.

  Thus, various moments acting on the vehicle 20 due to changes in the behavior of the vehicle 20 serve as indices for determining the degree of stress applied to the passenger of the vehicle 20. Here, “stress” means “physical load”. The vehicle behavior detection sensor 240 detects a moment that acts on the vehicle 20 due to a change in the behavior of the vehicle (any one or more of rolling, pitching, yawing, bouncing, harshness, or jerk). As the vehicle behavior detection sensor 240, for example, an angular velocity sensor (gyro sensor), an acceleration sensor, or a jerk sensor can be used.

  Details of the automatic operation control program 270, the in-vehicle device control program 280, and the counter 250 will be described later. The vehicle 20 includes a travel parameter detection device 201, a position detection device 202, a switch group 203, an engine control device 204, a brake control device 205, a steering control device 206, a navigation device 207, an acoustic device 208, The interior lighting device 209 and the fragrance gas generation device 210 are provided. Details of these devices 201 to 210 will also be described later.

  The information processing system 10 includes a processor 11, a storage device 12, and a communication device 13 as hardware resources. Since the hardware configurations of the processor 11, the storage device 12, and the communication device 13 are the same as the hardware configurations of the processor 231, the storage device 232, and the communication device 220, detailed descriptions thereof are omitted. When the communication devices 13 and 220 are distinguished, the communication device 13 is referred to as a first communication device, and the communication device 220 is referred to as a second communication device.

  The processor 11 interprets and executes the computer program 100 stored in the storage device 12 to perform various types of information processing for supporting the driving of the vehicle 20. The computer program 100 includes an evaluation program 110. The evaluation program 110 is a program for evaluating the degree of stress experienced by a passenger of the vehicle 20 from a change in the behavior of the vehicle 20. Evaluating the degree of stress is synonymous with determining the degree of stress. The storage device 12 stores a computer program 100, setting information 120, a detection data accumulation database 130, and a vehicle behavior analysis database 140.

  As shown in FIG. 2, the setting information 120 includes cumulative values (M1, M2,..., MN) of moments acting on the vehicle 20 per unit time, and biological information (I1, I2,..., Occupants of the vehicle 20). IN) and the degree of stress (S1, S2,..., SN) received by the passenger of the vehicle 20 are associated with each other. When various moments act around the front, rear, left, right, top, and bottom axes passing through the center of gravity of the vehicle 20 due to the change in the behavior of the vehicle 20, the occupant's biological body is determined according to the accumulated value of the moment acting on the vehicle 20 per unit time. Changes in information (for example, changes in respiratory rate and heart rate, changes in the secretion of stress hormones, or changes in the activity state of sympathetic and parasympathetic nerves) occur. For example, when the cumulative value of the moment acting on the vehicle 20 per unit time increases, the physical stress applied to the occupant's semicircular canal increases. Thereby, the occupant's respiratory rate, heart rate, and stress hormone secretion are increased, the sympathetic nerve is activated, and the parasympathetic nerve is inactivated. The variation of the biological information determined from such complex factors serves as an index for quantitatively evaluating the degree of stress experienced by the occupant of the vehicle 20. Therefore, the biometric information IK when the cumulative value of the moment acting on the vehicle 20 per unit time is MK is measured in advance for an unspecified subject, and the degree of stress corresponding to the measured biometric information IK. Setting information 120 is obtained by setting SK (where K is a positive number between 1 and N). Here, the biometric information IK is the biometric information (for example, respiratory rate, heart rate, stress hormone secretion amount, or the like of the occupant of the vehicle 20 when the cumulative value of the moment acting on the vehicle 20 per unit time is MK. This is a value calculated from a value that quantitatively evaluates the activity state of the sympathetic nerve and parasympathetic nerve.

  Even if the cumulative value of moments acting on the vehicle 20 per unit time is the same, the degree of change in the biological information of the occupant of the vehicle 20 has individual differences. Therefore, the biological information of the occupant of the vehicle 20 when the cumulative value of the moment acting on the vehicle 20 per unit time is MK is measured for a plurality of subjects, and the average value of the measured values is the biological information IK. It is good.

  In addition, even if the cumulative value of moments acting on the vehicle 20 per unit time is the same, if the weather (for example, clear weather and rainy weather), the degree of traffic congestion, or the time zone (for example, day and night) are different, the occupant of the vehicle 20 The degree of change in biometric information (for example, heart rate and stress hormone secretion amount) may also be different. For this reason, the accumulated value (M1, M2,..., MN) of moment acting on the vehicle 20 per unit time and the biological information (I1, I,..., IN) and a plurality of setting information 120 having different correspondence relationships between the degree of stress (S1, S2,. In this case, the setting information 120 shown in FIG. 2 includes a cumulative value (M1, M2,...) Of moments acting on the vehicle 20 per unit time in a certain time zone under a certain weather and a certain degree of traffic jam. , MN), the biological information (I1, I2,..., IN) of the occupant of the vehicle 20 and the degree of stress (S1, S2,..., SN) experienced by the occupant of the vehicle 20. Information about the weather, the degree of traffic jam, or the time zone is set in each setting information 120 so that the appropriate setting information 120 is selected from the plurality of setting information 120 according to the weather, the level of traffic jam, or the time zone. It may be included.

  Also, a plurality of setting information 120 optimized through a learning function is stored in the storage device 12 in advance for a plurality of subjects in different time zones under different weather conditions and at different levels of traffic congestion. May be.

  Note that the stress levels S1, S2,..., SN may be numerical values ranging from 0 to 100, for example.

  Next, the relationship between the stress level and the comfort level will be described. The degree of stress and comfort are in a complementary relationship, and the higher one is, the lower is the other. If the type of moment acting on the vehicle 20 is L, equation (1) is established.

Y = ΣYi (1)
Here, L is a positive number, and i is a positive number of 1 or more and L or less. Yi is the comfort level given to the occupant of the vehicle 20 by the accumulated value of the i-th moment per unit time. Y is the comfort level of the occupant of the vehicle 20, and is a total value obtained by adding Yi from i = 1 to i = L. For example, when L = 6, examples of the six types of moments acting on the vehicle 20 include those resulting from rolling, pitching, yawing, bouncing, harshness, and jerk.

  For convenience of explanation, as moments acting on the vehicle 20, for example, those caused by rolling, pitching, and yawing are considered as an example (in this case, L = 3). The cumulative value of the rolling moment acting on the vehicle 20 per unit time is X1, the cumulative value of the pitching moment acting on the vehicle 20 per unit time is X2, and the cumulative value of the yawing moment acting on the vehicle 20 per unit time. When X3 is X3, equations (2) to (5) are established. Note that α, β, and γ are weighting factors, respectively.

Y = Y1 + Y2 + Y3 (2)
Y1 = (− 1.0389 × X1 + 94.436) × α (3)
Y2 = 900.055 × exp (−0.023 × X2) × β (4)
Y3 = 84.543 × exp (−0.022 × X3) × γ (5)

  FIG. 3 is a graph obtained by regression analysis of the relationship between the cumulative value (N · mm · number / hr) of the rolling moment acting on the vehicle 20 per unit time and the comfort level (relationship between Y1 and X1). Show.

  FIG. 4 is a graph obtained by regression analysis of the relationship between the cumulative value (N · mm · number / hr) of the pitching moment acting on the vehicle 20 per unit time and the comfort level (relationship between Y2 and X2). Show.

  FIG. 5 is a graph obtained by regression analysis of the relationship between the accumulated value (N · mm · number / hr) of the yawing moment acting on the vehicle 20 per unit time and the comfort level (relationship between Y3 and X3). Show.

  In FIG. 3 to FIG. 5, the comfort level is exemplified as a numerical value ranging from 0 to 100. According to the equations (2) to (5), the comfort level received by the occupant of the vehicle 20 can be obtained from the accumulated value of the moment acting on the vehicle 20 per unit time. Moreover, since the comfort level and the stress level are in a complementary relationship, the stress level can be quantitatively evaluated from the comfort level. It should be noted that Equations (3) to (5) and FIGS. 3 to 5 show the comfort level when the weather is fine, and show different comfort levels under rainy weather. I want.

  Next, an information processing method for quantitatively evaluating the degree of stress will be described with reference to FIG. The vehicle behavior detection sensor 240 detects a moment that acts on the vehicle 20 due to a change in the behavior of the vehicle 20 (step 601). Next, the driving support system 200 transmits information related to the detected moment to the information processing system 10 through the communication device 220 together with the position information and time information of the vehicle 20 (step 602). The information processing system 10 receives information related to the detected moment together with the position information and time information of the vehicle 20 through the communication device 13 (step 603), and stores them in the detection data storage database 130 (step 604). Next, the information processing system 10 refers to the detection data storage database 130 and calculates a cumulative value of moments per unit time (step 605).

  Next, the information processing system 10 refers to the setting information 120 from the accumulated value of moments per unit time and evaluates the degree of stress experienced by the passenger of the vehicle 20 (step 606). The accumulated moment values (M1, M2,..., MN) acting on the vehicle 20 per unit time and the biological information (I1, I2,. , IN) and a plurality of setting information 120 having different correspondence relationships between the degree of stress (S1, S2,..., SN) received by the occupant of the vehicle 20 is stored in the storage device 12 in advance. 10 acquires weather information and traffic jam information from the weather information server 30 and the traffic information server 40, respectively. Then, the information processing system 10 selects the setting information 120 corresponding to the weather, the degree of traffic jam, and the time zone from the plurality of setting information 120, and refers to the selected setting information 120 to obtain the per unit time. The degree of stress received by the occupant of the vehicle 20 is evaluated from the accumulated value of the moment. For example, when the vehicle 20 is traveling, the weather is clear, the degree of traffic jam is severe, and the time zone at that time is a daytime zone, the setting corresponding to such a situation The information 120 is selected from a plurality of setting information 120, and the degree of stress experienced by the occupant of the vehicle 20 is evaluated with reference to the selected setting information 120. Next, the information processing system 10 transmits information related to the degree of stress received by the passenger of the vehicle 20 to the driving support system 200 through the communication device 13 as information for supporting the driving of the vehicle 20 (step 607). The driving support system 200 receives information related to the degree of stress from the information processing system 10 (step 608).

  The evaluation program 110 is a computer program that describes the above-described information processing (steps 603 to 607) executed by the information processing system 10. In cooperation with the hardware resources of the information processing system 10 and the evaluation program 110, a function as an evaluation means for evaluating the degree of stress experienced by the passenger of the vehicle 20 is realized.

  Here, the description returns to FIG. The automatic driving control program 270 is a computer program that controls the automatic driving of the vehicle 20, and can control the automatic driving according to the degree of stress experienced by the passenger of the vehicle 20. First, prior to the description of the automatic driving of the vehicle 20, the details of the devices 201 to 210 will be described.

  The travel parameter detection device 201 detects travel parameters of the vehicle 20 (for example, vehicle speed, steering torque, steering wheel angle, yaw rate, accelerator opening, road surface gradient, road surface friction coefficient estimated value, etc.). These travel parameters are input to the engine control device 204, the brake control device 205, the steering control device 206, and the like.

  For example, the position detection device 202 receives a radio wave transmitted from a global positioning satellite and detects the position of the vehicle 20 based on the radio wave information.

  The switch group 203 is a switch group related to driving support control for the driver of the vehicle 20. The switch group 203 includes, for example, a switch for instructing to switch the operation mode of the vehicle 20 between the manual operation mode and the automatic operation mode, a switch for instructing traveling while maintaining the vehicle speed at a constant speed, A switch for instructing to follow the vehicle while maintaining a constant inter-vehicle distance, a switch for instructing to drive while maintaining the traveling lane in the set lane, or instructing to prevent deviation from the traveling lane Includes switches. When the operation mode of the vehicle 20 is switched from the manual operation mode to the automatic operation mode, the automatic operation control program 270 automatically controls the engine control device 204, the brake control device 205, and the steering control device 206.

  The engine control device 204 controls the fuel injection control and ignition timing control of the engine of the vehicle 20 based on information such as intake air amount, throttle opening, engine water temperature, intake air temperature, oxygen concentration, crank angle, and accelerator opening, for example. And so on.

  The brake control device 205 performs anti-lock control, side slip prevention control, yaw brake control, and the like based on information such as wheel speed, steering wheel angle, and yaw rate, for example.

  The steering control device 206 controls assist torque by the electric power steering motor of the vehicle 20 based on information such as vehicle speed, steering torque, steering wheel angle, and yaw rate, for example. In addition, the steering control device 206 performs lane keeping control for controlling traveling while maintaining the traveling lane at the set lane, and control for preventing departure from the traveling lane in response to the operation of the switch group 203 by the driver.

  The navigation device 207 guides the travel route of the vehicle 20. The navigation device 209 has map data, and the position of the vehicle 20 detected by the position detection device 202 is specified on the map data. The map data includes road data and facility data. The road data includes link position information, link type information, node position information, node type information, and information on connection relations between nodes and links (information on road branch points and junction points). It is out. The facility data has a plurality of records set for each facility, and each record includes information on the name of the target facility, information on the location, facility type (department store, store, restaurant, parking lot, park) Etc.). The navigation device 207 displays the position of the vehicle 20 on a map. When a destination is input, the navigation device 207 calculates a route from the departure point to the destination, displays the route on the display, and performs voice guidance.

  The acoustic device 208 is, for example, an audio device that outputs music. The interior lighting device 209 illuminates the interior of the vehicle 20. The fragrance gas generator 210 generates fragrance gas and provides it to the passenger compartment of the vehicle 20.

  In the automatic driving mode, the automatic driving control program 270 is based on the driving parameters detected by the driving parameter detecting device 201, the position of the vehicle 20 detected by the position detecting device 202, and the operation of the switch group 203 by the driver. The automatic driving control is executed by coordinating constant speed traveling control, following traveling control, lane keeping control, lane departure prevention control, and the like. In the automatic driving control, when the degree of stress received by the occupant of the vehicle 20 exceeds the threshold, the automatic driving control program 270 automatically controls engine output, brake braking, and steering operation so that the degree of stress is less than the threshold. . At this time, the automatic driving control program 270 preferentially selects and selects a route that is estimated to have a low degree of stress among a plurality of routes from the departure value set by the navigation device 207 to the destination. The vehicle 20 may travel along the route. By storing the route traveled by the vehicle 20 in the past, the stress level received by the passenger of the vehicle 20 and the travel date and time on the map data of the navigation device 207, the stress level is low. An estimated route can be selected. Thus, the function as the automatic driving control means is realized by the cooperation of the hardware resources of the driving support system 200 and the automatic driving control program 270.

  The counter 250 quantitatively counts the stress load on the occupant of the vehicle 20 as a point value. Specifically, the counter 250 increases or decreases the point value according to the increase or decrease of the stress level evaluated by the evaluation program 110. In addition, when a stress reduction process that promotes reduction of the stress load on the occupant of the vehicle 20 is executed, the counter 250 subtracts the point value. When the point value exceeds the threshold value, the in-vehicle device control program 280 causes the in-vehicle device (for example, the navigation device 207, the acoustic device 208, the interior lighting device 209, and the fragrance gas generation) of the vehicle 20 so that the stress reduction process is executed. The device 210) is controlled.

  As the stress reduction process, for example, the in-vehicle device control program 280 controls the navigation device 207 to select a travel route or rest facility (for example, a service area or a parking lot) that is selected so as to promote a reduction in the stress load on the occupant of the vehicle 20. You may perform the process which provides the driver | operator of the vehicle 20 the information which guides an area etc.).

  As the stress reduction processing, for example, the in-vehicle device control program 280 controls the audio device 208 and the music selected so as to promote the reduction of the stress load on the occupant of the vehicle 20 (for example, music that promotes secretion of beta endorphins). May be executed.

  As the stress reduction processing, for example, the in-vehicle device control program 280 controls the in-vehicle lighting device 209 to select the illumination light (for example, orange with a low color temperature) that is urged to reduce the stress load on the occupant of the vehicle 20. Of the illumination light) may be executed.

  As the stress reduction process, for example, the in-vehicle device control program 280 controls the fragrance gas generation device 210 to select a fragrance gas (for example, an aroma having a sedative effect) so as to promote a reduction in the stress load on the occupant of the vehicle 20. Oil fragrance gas) may be performed.

  In this way, the function as the in-vehicle device control means is realized by the cooperation of the hardware resources of the driving support system 200 and the in-vehicle device control program 280.

  Note that the information processing system 10 as an information process for supporting the driving of the vehicle 20 includes, for example, the behavior of the vehicle 20 after the fact, in addition to the process of quantitatively evaluating the degree of stress received by the passenger of the vehicle 20. Processing for analysis may also be performed. The information processing system 10 receives, for example, information related to the behavior of the vehicle 20 and position information of the vehicle 20 detected by the vehicle behavior detection sensor 240 from the driving support system 200, and also provides weather information and traffic information to the weather information server 30. And received from the traffic information server 40. Then, the information processing system 10 stores information related to the behavior of the vehicle 20, position information of the vehicle 20, weather information, and traffic information in the vehicle behavior analysis database 140 in association with each other. By referring to the vehicle behavior analysis database 140, the information processing system 10 grasps what kind of behavior the vehicle 20 behaves under what weather conditions or under what traffic conditions. Can do. Then, the information processing system 10 analyzes a measure for improving the behavior of the vehicle 20 in consideration of, for example, the position where the sudden steering or braking is performed and the weather conditions at that time, and the analysis result is sent to the driving support system 200. provide. This analysis result is utilized for the automatic driving control of the vehicle 20.

  The information processing system 10 may perform a process of providing the infrastructure facility 50 with information related to the degree of stress received by a passenger of the vehicle 20 as information processing for supporting driving of the vehicle 20. When the degree of stress received by the passenger of the vehicle 20 exceeds the threshold value, the infrastructure facility 50 displays information for guiding the rest facility on, for example, an electric bulletin board on a highway.

  As described above, according to the first embodiment of the present invention, the information processing system 10 determines, based on the accumulated value of the moment per unit time that acts on the vehicle 20 due to the change in the behavior of the vehicle 20, The degree of stress received can be evaluated quantitatively. In particular, among changes in the behavior of the vehicle 20, rolling, pitching, yawing, bouncing, harshness, and jerk cause torsional loads around the front, rear, left, right, top, and bottom axes of the vehicle 20, so It is suitable for evaluating the degree.

  In addition, the accumulated stress value per unit time, the biological information of the occupant of the vehicle 20, and the stress level received by the occupant of the vehicle 20 are correlated with each other, thereby accurately evaluating the stress level from a physiological viewpoint. be able to.

  Moreover, since the automatic driving control program 270 controls the automatic driving of the vehicle 20 such that the degree of stress of the occupant of the vehicle 20 is less than the threshold value, a comfortable driving environment can be provided. Further, when the point value for quantitatively evaluating the stress load on the occupant of the vehicle 20 exceeds the threshold value, the in-vehicle device control program 280 controls the in-vehicle device of the vehicle 20 so that the stress reduction processing is executed. Thus, a comfortable driving environment can be provided.

  FIG. 7 is an explanatory diagram showing configurations of the information processing system 10 and the vehicle 20 according to the second embodiment of the present invention. In the first embodiment, the information processing system 10 evaluates the degree of stress, whereas in the second embodiment, the two differ in that the driving support system 200 evaluates the degree of stress. Description of points common to the first and second embodiments will be omitted, and differences between the two will be mainly described.

  The computer program 260 stored in the storage device 232 of the driving support system 200 according to the second embodiment includes an evaluation program 110 in addition to the automatic driving control program 270 and the in-vehicle device control program 280. In addition to the computer program 260, setting information 120 and a detection data storage database 130 are stored in the storage device 232 of the driving support system 200 of the second embodiment.

  The vehicle behavior detection sensor 240 detects a moment that acts on the vehicle 20 due to a change in the behavior of the vehicle 20. Next, the driving support system 200 stores information related to the detected moment in the detection data storage database 130 together with the position information and time information of the vehicle 20. Next, the driving support system 200 refers to the detection data accumulation database 130 and calculates a cumulative value of moments per unit time. Next, the information processing system 10 refers to the setting information 120 from the accumulated value of moments per unit time and evaluates the degree of stress experienced by the occupant of the vehicle 20. The stress degree evaluation method by the evaluation program 110 according to the second embodiment is the same as the stress degree evaluation method by the evaluation program 110 according to the first embodiment. The automatic driving control program 270 controls the automatic driving according to the degree of stress experienced by the passenger of the vehicle 20. The automatic driving control by the automatic driving control program 270 according to the second embodiment is the same as the automatic driving control by the automatic driving control program 270 according to the first embodiment. When the point value counted by the counter 250 exceeds the threshold value, the in-vehicle device control program 280 causes the in-vehicle device (for example, the navigation device 207, the acoustic device 208, the in-vehicle lighting device 209) of the vehicle 20 to execute the stress reduction process. , And the fragrance gas generator 210). The in-vehicle device control by the in-vehicle device control program 280 according to the second embodiment is the same as the in-vehicle device control by the in-vehicle device control program 280 according to the first embodiment.

  In addition, the accumulated value (M1, M2,..., MN) of the moment acting on the vehicle 20 per unit time, the biological information (I1, I2,..., IN) of the occupant of the vehicle 20 and the occupant of the vehicle 20 are received. The correspondence relationship with the degree of stress (S1, S2,..., SN) may be updated using a learning function. Thereby, the setting information 120 can be optimized for each occupant of the vehicle 20.

  As described above, according to the second embodiment of the present invention, the driving support system 200 determines the degree of stress received by the occupant from the accumulated value of moments per unit time acting on the vehicle 20 due to the change in the behavior of the vehicle 20. Can be quantitatively evaluated.

  Each embodiment described above is for facilitating the understanding of the present invention, and is not intended to limit the present invention. The present invention can be changed / improved without departing from the spirit thereof, and the present invention includes equivalents thereof. In other words, those obtained by appropriately modifying the design of each embodiment by those skilled in the art are also included in the scope of the present invention as long as they include the features of the present invention. In addition, each element included in each embodiment can be combined as much as technically possible, and combinations thereof are included in the scope of the present invention as long as they include the features of the present invention.

DESCRIPTION OF SYMBOLS 10 ... Information processing system 11 ... Processor 12 ... Communication apparatus 13 ... Storage device 20 ... Vehicle 30 ... Weather information server 40 ... Traffic information server 50 ... Infrastructure equipment 60 ... Communication network 100 ... Computer program 110 ... Evaluation program 120 ... Setting information 130 ... Detection data storage database 140 ... Vehicle behavior analysis database 200 ... Driving support system 220 ... Communication device 230 ... Control device 231 ... Processor 232 ... Storage device 240 ... Vehicle behavior detection sensor 250 ... Counter 260 ... Computer program 270 ... Automatic operation control program 280 ... In-vehicle device control program

Claims (12)

A first communication device that receives from the vehicle a moment that acts on the vehicle due to a change in the behavior of the vehicle;
A storage device for storing setting information for associating the cumulative value of the moment per unit time with the degree of stress experienced by the vehicle occupant;
An evaluation unit that evaluates the degree of stress with reference to the setting information from a cumulative value of the moment per unit time;
An information processing system comprising: The information processing system according to claim 1,
The information processing system, wherein the moment acting on the vehicle is a moment that causes a rotational motion around a longitudinal axis that passes through the center of gravity of the vehicle, or a moment that acts on a longitudinal axis that passes through the center of gravity of the vehicle. The information processing system according to claim 1,
The information processing system in which the change in the behavior of the vehicle is any one of rolling, pitching, yawing, bouncing, harshness, or jerk of the vehicle. The information processing system according to any one of claims 1 to 3,
The information processing system, wherein the setting information correlates the accumulated value of the moment per unit time, the biological information of the vehicle occupant, and the degree of stress experienced by the vehicle occupant. An information processing system according to any one of claims 1 to 4,
The storage device stores a plurality of setting information in which the correspondence relationship between the accumulated value of the moment per unit time and the degree of stress received by the vehicle occupant differs according to the weather, the degree of traffic jam, or the time zone. And
The evaluation means selects the setting information corresponding to the weather, the degree of traffic jam, or the time zone from the plurality of setting information, and refers to the selected setting information, from the accumulated value of the moment per unit time An information processing system for evaluating the stress level. A driving support system mounted on the vehicle that is communicably connected to the information processing system according to any one of claims 1 to 5,
A second communication device that receives the degree of stress from the information processing system;
Automatic driving control means for controlling automatic driving of the vehicle such that the degree of stress is less than a threshold;
A driving support system comprising: A driving support system mounted on the vehicle that is communicably connected to the information processing system according to any one of claims 1 to 5,
A second communication device that receives the degree of stress from the information processing system;
A counter that quantitatively counts a stress load of an occupant of the vehicle as a point value, wherein the point value is increased or decreased according to the increase or decrease of the stress degree evaluated by the evaluation means, and the occupant of the vehicle A counter that subtracts the point value when a stress reduction process for reducing stress load is executed;
An in-vehicle device control means for controlling the in-vehicle device of the vehicle so that the stress reduction processing is executed when the point value exceeds a threshold;
A driving support system comprising: The driving support system according to claim 7,
The stress reduction process is:
A process of controlling the navigation device of the vehicle and providing information to the driver of the vehicle that guides a driving route or a resting facility selected so as to promote a reduction in stress load on the vehicle occupant;
A process of controlling the acoustic device of the vehicle and outputting a song selected so as to promote a reduction in stress load on the occupant of the vehicle;
A process of controlling the interior lighting device of the vehicle and outputting the selected illumination light so as to promote a reduction in the stress load on the vehicle occupant, or controlling the fragrance gas generating device of the vehicle, A process for producing a selected fragrance gas to promote a reduction in the stress load of
A driving support system that is either A vehicle behavior detection sensor for detecting a moment acting on the vehicle due to a change in the behavior of the vehicle;
A storage device for storing setting information for associating the cumulative value of the moment per unit time with the degree of stress experienced by the vehicle occupant;
An evaluation unit that evaluates the degree of stress with reference to the setting information from a cumulative value of the moment per unit time;
A driving support system comprising: The driving support system according to claim 9,
A driving support system further comprising automatic driving control means for controlling automatic driving of the vehicle so that the degree of stress is less than a threshold value. Computer
Receiving from the vehicle a moment acting on the vehicle due to a change in the behavior of the vehicle;
Referring to setting information for associating the accumulated value of the moment per unit time with the stress level received by the vehicle occupant, and evaluating the stress level from the accumulated value of the moment per unit time;
Information processing method to execute. On the computer,
Receiving from the vehicle a moment acting on the vehicle due to a change in the behavior of the vehicle;
Referring to setting information for associating the accumulated value of the moment per unit time with the stress level received by the vehicle occupant, and evaluating the stress level from the accumulated value of the moment per unit time;
A computer program that executes