JP2023151645A - Traffic safety support system - Google Patents

Abstract

To provide a traffic safety support system capable of improving traffic safety in a situation in which a host vehicle is going to travel straight through an intersection and another mobile body is approaching the intersection.SOLUTION: A traffic safety support system 1 includes recognition means, an HMI, a risk notification setting unit 64, and a risk notification control device. The risk notification setting unit 64, on the basis of speeds and positions of a motorcycle 3 and a four-wheeled automobile 2 recognized by the recognition means and driving subject characteristic information on a driver of the four-wheeled automobile 2 acquired by a driving subject information acquisition unit 61, sets a notification mode of a risk notification control device 327 to a hinting notification mode in a case where there is a possibility of collision between the motorcycle 3 and the four-wheeled automobile 2 near an intersection. Further, the risk notification setting unit 64 sets the notification mode of the risk notification control device 327 to an analogue notification mode in a case where the four-wheeled automobile 2 is present within a second range and where the speed of the four-wheeled automobile 2 exceeds a predetermined speed.SELECTED DRAWING: Figure 2

Description

The present invention relates to a traffic safety support system. More specifically, the present invention relates to a traffic safety support system that supports driving by a supported driver who is a moving object.

In public transportation, various traffic participants, including vehicles such as four-wheeled vehicles, motorcycles, and bicycles, as well as pedestrians, move at different speeds based on their own intentions. As a technology for improving the safety and convenience of traffic participants in such public transportation, for example, Patent Document 1 discloses, in addition to the predicted dangerous situation, the vehicle behavior when the occupant feels danger. By executing driving support control based on information on driving conditions and information on the vehicle's surrounding environment, it is possible to issue warnings or intervene in driving control without interfering with smooth driving even when multiple objects are present. A driving assistance device is shown that performs the following.

JP 2021-136001 Publication

In conventional driving support technology, when the own vehicle is about to proceed straight through an intersection and another moving object is approaching the intersection, the automatic driver automatically detects the possibility of a collision between the own vehicle and the other moving object. The driver of the car was notified. However, conventional driving support technology does not accurately notify the driver of the own vehicle, and traffic safety has not been sufficiently ensured.

An object of the present invention is to provide a traffic safety support system that can improve traffic safety in a situation where a vehicle is going straight through an intersection and another moving object is approaching the intersection.

(1) The traffic safety support system according to the present invention (for example, traffic safety support system 1 described later) is a traffic safety support system that supports driving by a driver of a support target (for example, a motorcycle 3 described later), which is a first moving object. The safety support system includes recognition means for recognizing traffic participants and the traffic environment in a monitoring area around the support target (for example, a vehicle-mounted driving support device 21, a vehicle-mounted communication device 24, a mobile information processing terminal 25, a vehicle-mounted A driving support device 31, an in-vehicle communication device 34, a mobile information processing terminal 35, a mobile information processing terminal 40, a signal control device 55, an infrastructure camera 56, a target traffic area recognition unit 60, and a traffic environment database 67), A man-machine interface (for example, HMI 220, HMI 320, and HMI 420 described below) that operates in a possible manner, and a first range within the monitoring area and centered on the support target (for example, ADAS operation described below) by the recognition means. notification mode setting means (for example, risk notification setting unit 64 described below) that sets the notification mode of the man-machine interface based on the recognition result by the recognition means ), when the notification mode is set to a first mode (for example, the presence notification mode described below), the man-machine interface is operated in the first notification mode, and the notification mode is set to the second mode (for example, the presence notification mode described below). analog notification mode), a notification control means (for example, a risk notification control device 227 described below, risk notification control) that operates the man-machine interface in a second notification mode with higher notification intensity than the first notification mode device 327 and HMI control device 425), and a driving characteristic acquisition means (for example, a driving agent information acquisition unit described below) that acquires driving agent characteristic information and driving agent state information of the drivers of the first mobile object and the second mobile object. 61), wherein the notification mode setting means is a mobile body that approaches the support target from the side in the direction of movement of the support target outside a second range that includes the first range. and the speed and position of the first moving body and the second moving body recognized by the recognition means, and the driving main characteristic information of the driver of the second moving body acquired by the driving characteristic acquisition means. Based on this, if there is a possibility that the first mobile body and the second mobile body will collide near an intersection in the monitoring area, the notification mode is set to the first mode, and the second mobile body If a body exists within the second range and the speed of the second moving body exceeds a predetermined speed, the notification mode is set to the second mode.

(2) In this case, it is preferable that the notification mode setting means changes the value of the predetermined speed based on weather conditions and road surface conditions in the monitoring area recognized by the recognition means.

(3) In this case, the notification mode setting means sets the notification timing in the first mode or the second mode based on visibility information indicating the state of visibility near the intersection recognized by the recognition means. It is preferable.

(4) In this case, when the notification mode is set to the second mode, the notification mode setting means adjusts the notification intensity according to the degree of risk between the support target and the second mobile object. It is preferable to change it.

(5) In this case, the support target is a driving support device ( For example, it is preferable to include a vehicle-mounted driving support device 31), which will be described later.

(1) In the traffic safety support system according to the present invention, when the notification mode is set to the first mode, the notification control means operates the man-machine interface in the first notification mode and sets the notification mode to the second mode. If the second mobile object approaches the support target from the side in the traveling direction of the support target, the man-machine interface is operated in a second notification mode having higher notification intensity than the first notification mode, and the second mobile object approaches the support target from the side in the direction of movement of the support target. Based on the speed and position of the first moving object and the second moving object that are moving objects and recognized by the recognition means, and the driving main characteristic information of the driver of the second moving object acquired by the driving characteristic acquisition means. If there is a possibility that the first moving object and the second moving object will collide near an intersection, the notification mode is set to the first mode, and if the second moving object exists within the second range and the second moving object When the speed of the second moving object exceeds a predetermined speed, the notification mode is set to the second mode. As a result, the traffic safety support system 1 provides a notification in advance in the first notification mode in a situation where the first mobile object to be supported is about to proceed straight through an intersection and the second mobile object is approaching the intersection. Additionally, when the speed of the second moving body exceeds a predetermined speed, notification can be performed in the second notification mode. Therefore, the traffic safety support system 1 detects that the first mobile object is about to proceed straight through the intersection and the second mobile object is approaching the intersection because the notification intensity of the first notification mode performed in advance is lower than the second notification mode. In such a situation, it is possible to both suppress the troublesome notification to the driver of the first moving body and ensure traffic safety.

(2) In the traffic safety support system according to the present invention, the notification mode setting means changes the value of the predetermined speed based on the weather condition and road surface condition in the monitoring area recognized by the recognition means. As a result, the traffic safety support system can suppress the inconvenience of notifications to the driver of the first mobile object and improve traffic safety by changing the notification timing according to the weather and road conditions in the monitoring area. It is possible to balance this with securing the following.

(3) In the traffic safety support system according to the present invention, the notification mode setting means sets the notification timing in the presence notification mode or the analog notification mode based on the visibility information indicating the state of visibility near the intersection recognized by the recognition device. Set. As a result, the traffic safety support system reduces the inconvenience of notifying the driver of the first mobile object by changing the notification timing according to visibility information indicating the visibility state of the intersection, that is, the degree of visibility of the intersection. It is possible to both suppress the amount of traffic and ensure traffic safety.

(4) In the traffic safety support system according to the present invention, the notification mode setting means changes the notification strength according to the degree of risk between the support target and the second moving object, so that the traffic safety support system according to the present invention When the degree of risk is high, it is possible to strongly notify the driver of the approach of the second moving object, and when the degree of risk is low, it is possible to notify the driver of the presence of the second moving object at a level that is not bothersome.

(5) In the traffic safety support system according to the present invention, the support target automatically operates at least one of the braking device and the steering device on the condition that there is a moving object that may come into contact within the first range. Equipped with a driving support device. Thereby, the traffic safety support system according to the present invention can reduce the possibility of a collision between the first moving body and the second moving body using the driving support device, and can ensure traffic safety.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram showing the configuration of a part of a traffic safety support system according to an embodiment of the present invention and a target traffic area supported by this traffic safety support system. FIG. 2 is a block diagram showing the configuration of a cooperation support device and a plurality of area terminals that are communicably connected to the cooperation support device. FIG. 2 is a block diagram showing the configuration of a notification device installed in a four-wheeled vehicle. FIG. 2 is a block diagram showing the configuration of a notification device installed in a motorcycle. FIG. 2 is a block diagram showing the configuration of a notification device installed in a mobile information processing terminal owned by a pedestrian. FIG. 2 is a schematic diagram for explaining the situation of four-wheeled vehicles and motorcycles on a road as a monitoring area.

DESCRIPTION OF THE PREFERRED EMBODIMENTS A traffic safety support system according to an embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a diagram schematically showing the configuration of a portion of a traffic safety support system 1 according to the present embodiment and a target traffic area 9 in which there are traffic participants targeted for support by this traffic safety support system 1.

The traffic safety support system 1 recognizes pedestrians 4, who are people moving in the target traffic area 9, and four-wheeled vehicles 2, motorcycles 3, etc., which are moving objects, as individual traffic participants, and through this recognition, The generated support information is notified to each traffic participant, and communication between each traffic participant who moves based on each individual's intention (specifically, mutual recognition between each traffic participant) and surrounding traffic are improved. By promoting awareness of the environment, safe and smooth traffic of each traffic participant in the target traffic area 9 is supported.

In FIG. 1, a case will be described in which the target traffic area 9 is the vicinity of an intersection 52 in a city area, which includes a roadway 51, an intersection 52, a sidewalk 53, and a traffic light 54 as traffic infrastructure facilities. In FIG. 1, a total of seven four-wheeled vehicles 2 and two motorcycles 3 are moving on a roadway 51 and an intersection 52, and a total of three pairs of pedestrians 4 are moving on a sidewalk 53 and an intersection 52. Indicates when Further, FIG. 1 shows a case where a total of three infrastructure cameras 56 are installed.

The traffic safety support system 1 includes a group of on-vehicle devices 20 that move with each four-wheeled vehicle 2 (in addition to on-vehicle devices mounted on the four-wheeled vehicle 2, mobile information owned or worn by the driver of the four-wheeled vehicle 2). a processing terminal), and a group of on-vehicle devices 30 that move with each motorcycle 3 (in addition to on-vehicle devices mounted on the motorcycle 3, this includes a mobile information processing terminal owned or worn by the driver of the motorcycle 3). , a mobile information processing terminal 40 held or worn by each pedestrian 4 , a plurality of infrastructure cameras 56 provided in the target traffic area 9 , a signal control device 55 that controls the traffic light 54 , and a group of these in-vehicle devices 20 , 30, a cooperation support device communicatively connected to a plurality of terminals (hereinafter also simply referred to as "area terminals") existing in the target traffic area 9, such as a mobile information processing terminal 40, an infrastructure camera 56, and a signal control device 55. 6.

The coordination support device 6 is constituted by one or more computers communicably connected to the plurality of area terminals described above via the base station 57. More specifically, the coordination support device 6 connects a plurality of area terminals to a base station 57, a network core, and a server connected via the Internet, and a plurality of area terminals to a base station 57 and an MEC (Multi-access (Edge Computing) Consists of edge servers etc. connected via a core.

FIG. 2 is a block diagram showing the configuration of the cooperation support device 6 and a plurality of area terminals that are communicably connected to the cooperation support device 6.

The in-vehicle device group 20 installed on the four-wheeled vehicle 2 in the target traffic area 9 includes, for example, an in-vehicle driving support device 21 that supports driving by the driver, a notification device 22 that notifies the driver of various information, and a device that supports driving while driving. a driver-based state sensor 23 that detects the driver's state; an in-vehicle communication device 24 that performs wireless communication between the driver's vehicle, the coordination support device 6, and other vehicles in the vicinity of the driver; and mobile information owned or worn by the driver. It includes a processing terminal 25 and the like.

The vehicle-mounted driving support device 21 includes an external world sensor unit, a vehicle state sensor, a navigation device, a driving support ECU, and the like. The external sensor unit includes an external camera unit that photographs the surroundings of the vehicle, and a radar unit and LIDAR (Light Detection and Ranging) unit that uses electromagnetic waves to detect objects outside the vehicle. The vehicle includes a plurality of on-vehicle external sensors and an external recognition device that acquires information regarding the state of the surroundings of the vehicle by performing sensor fusion processing on detection results from the on-vehicle external sensors. The own vehicle state sensor is composed of sensors that acquire information regarding the running state of the own vehicle, such as a vehicle speed sensor, an acceleration sensor, a steering angle sensor, a yaw rate sensor, a position sensor, and a direction sensor. The navigation device includes, for example, a GNSS (Global Navigation Satellite System) receiver that identifies the current position of the vehicle based on signals received from satellites, a storage device that stores map information, and the like.

The driving support ECU performs lane departure prevention control, lane change control, preceding vehicle following control, false start prevention control, collision mitigation brake control, and executes driving support control such as collision avoidance control. The driving support ECU also generates driving support information to support safe driving by the driver based on information acquired by the external sensor unit, the own vehicle status sensor, the navigation device, etc., and sends it to the notification device 22. do.

Here, the driving support ECU prevents contact between the own vehicle and another moving object, on the condition that there is a moving object that may come into contact with the own vehicle within a predetermined collision mitigation brake activation range centered on the own vehicle. Collision Mitigation Brake Control automatically operates the vehicle's braking system to reduce damage caused by collision. In addition, the driving support ECU prevents contact between the own vehicle and another moving object, provided that there is a moving object that may come into contact with the own vehicle within a predetermined collision avoidance steering operation range centered on the own vehicle. Starts collision avoidance control that automatically operates the vehicle's steering system to avoid a collision. Hereinafter, the collision mitigation brake operation range and the collision avoidance steering operation range will also be collectively referred to as the "ADAS operation range."

The driving main state sensor 23 is constituted by various devices that acquire temporal data of information correlated with the driving ability of the driver while driving. The driver's main state sensor 23 is, for example, an in-vehicle camera that detects the direction of the driver's line of sight and whether or not he has his eyes open while driving, or a sensor that is installed on a seat belt worn by the driver and that detects the driver's pulse, whether or not he is breathing, etc. It consists of a seat belt sensor that detects the vehicle, a steering sensor installed on the steering wheel held by the driver that detects the driver's skin potential, and an in-vehicle microphone that detects the presence or absence of conversation between the driver and fellow passengers. .

The in-vehicle communication device 24 transmits information acquired by the driving support ECU (including information acquired by the external sensor unit, own vehicle status sensor, navigation device, etc., control information related to the driving support control being executed, etc.), and information acquired by the driving support ECU. A function of transmitting information related to the driver acquired by the state sensor 23 to the coordination support device 6, and a function of receiving coordination support information transmitted from the coordination support device 6 and transmitting the received coordination support information to the notification device 22. and.

The notification device 22 connects to a human machine interface (hereinafter referred to as "HMI (Human Machine Interface)" in a manner determined based on the driving support information transmitted from the in-vehicle driving support device 21 and the cooperation support information transmitted from the cooperation support device 6. It is composed of various devices that notify the driver of various information through the driver's auditory, visual, and tactile senses by operating the system (sometimes abbreviated as "").

FIG. 3A is a block diagram showing the configuration of a notification device 22 installed in a four-wheeled vehicle. Note that FIG. 3A shows only blocks of the notification device 22 that are particularly related to control based on cooperation support information transmitted from the cooperation support device 6.

The notification device 22 includes an HMI 220 that operates in a manner that the driver can recognize, and an HMI control device 225 that operates the HMI 220 based on coordination support information transmitted from the coordination support device 6.

The HMI 220 includes an audio device 221 that operates in a manner that the driver can recognize by hearing, a head-up display 222 that operates in a manner that the driver can recognize visually, and a manner that the driver can recognize by the sense of touch. It includes a seat belt control device 223 and a seat vibration device 224.

The audio device 221 includes a headrest speaker 221a that is installed in the headrest of the driver's seat where the driver is seated and is capable of producing directional binaural sound, and a main speaker 221b that is installed near the driver's seat and the passenger seat. and. These headrest speakers 221a and main speakers 221b generate sounds according to commands from the HMI control device 225. The head-up display 222 displays an image according to a command from the HMI control device 225 within the field of view (for example, the windshield) of the driver while driving. The seat belt control device 223 changes the tension of the seat belt worn by the driver in response to a command from the HMI control device 225. The seat vibration device 224 vibrates the seat on which the driver is seated at an amplitude and/or frequency according to a command from the HMI control device 225.

The HMI control device 225 includes a health improvement control device 226 that operates the HMI 220 in a predetermined manner in order to restore the driver's driving ability (in particular, cognitive ability), and a health improvement control device 226 that operates the HMI 220 in a predetermined manner to restore the driver's driving ability (in particular, cognitive ability), and a health improvement control device 226 that operates the HMI 220 in a predetermined manner to restore the driver's driving ability (in particular, cognitive ability). It includes a risk notification control device 227 that operates the HMI 220 in a predetermined manner to make the risk aware. As will be explained later, the cooperative support information transmitted from the cooperative support device 6 to the four-wheeled vehicle 2 includes information regarding the health notification setting value for setting on/off of the health notification by the health restoration control device 226. information on risk notification setting values for setting on/off of risk notification by the risk notification control device 227 and the types of notification modes described later, and information on risks that approach the driver (hereinafter referred to as "risk information"). ), etc.

The health notification setting value input to the health restoration control device 226 is “0” which turns off the health notification by the health restoration control device 226, and “1” which turns on the health notification by the health restoration control device 226. ” is set to one of the following values.

When the health restoration notification setting value is "0", the health restoration control device 226 sets the health restoration notification to OFF. That is, the health restoration control device 226 does not operate the HMI 220 when the health restoration notification setting value is "0". Note that this does not prevent the risk notification control device 227 from operating the HMI 220.

When the health restoration notification setting value is "1", the health restoration control device 226 sets the health restoration notification to ON. More specifically, the health improvement control device 226 improves the driving ability of the driver by, for example, making the headrest speaker 221a or the main speaker 221b produce music that attracts the driver's interest. At this time, in order to increase the driver's level of alertness, the BPM (Beats Per Minute) of the music may be changed or the bass may be emphasized.

In this way, the health improvement control device 226 operates the HMI 220 in order to restore the driver's driving ability, so when the risk notification by the risk notification control device 227 described later is set to ON (that is, If the notification setting value is "1" or "2"), the health improvement notification may be turned off so as not to feel bothersome to the driver. Furthermore, in this embodiment, a case will be described in which the soundness control device 226 works to improve the driving ability of the driver primarily through the driver's auditory senses by operating the headrest speaker 221a and the main speaker 221b. is not limited to this. The health control device 226 may operate the seat belt control device 223 or the seat vibration device 224, for example.

The risk notification control device 227 is capable of performing risk notification under a plurality of notification modes in which at least one of the operation target device and operation mode of the HMI 220 is different. More specifically, the risk notification control device 227 uses a presence notification mode for the purpose of making the driver aware of the existence of a potential risk, the existence of a risk that has become apparent to the driver, and/or the degree of this risk. Under at least one of the following notification modes: an analog notification mode that aims to make the driver aware of the risk, and a predictive support notification mode that aims to notify the driver of useful information to avoid predicted risks. It is now possible to send risk notifications. Therefore, the risk notification setting value input to the risk notification control device 227 is “0” which sets the risk notification by the risk notification control device 227 to OFF, and “0” which sets the risk notification by the risk notification control device 227 to ON. “1” sets the notification mode to the indication notification mode and the prediction support notification mode, and “2” sets the risk notification by the risk notification control device 227 to ON and sets the notification mode to the analog notification mode and the prediction support notification mode. It is set to one of the following values.

The risk notification control device 227 turns off the risk notification when the risk notification setting value is "0". That is, the risk notification control device 227 does not operate the HMI 220 when the risk notification setting value is "0". Note that this does not prevent the health control device 226 from operating the HMI 220.

When the risk notification setting value is “1”, the risk notification control device 227 sets the notification mode to the indication notification mode and the prediction support notification mode, and turns on the risk notification under these set notification modes. do.

Further, when the risk notification setting value is "2", the risk notification control device 227 sets the notification mode to analog notification mode and predictive support notification mode, and turns on the risk notification under these set notification modes. Make it.

Here, when the notification mode is set to the predictive support notification mode, the risk notification control device 227 is configured to prevent the driver from approaching risks based on the risk information transmitted from the cooperative support device 6. In addition to generating useful risk avoidance support information, the audio device 221 and head-up display 222 of the HMI 220 are operated in such a manner that the driver can recognize this risk avoidance support information audibly or visually. Here, the risk avoidance support information includes information regarding the location of traffic participants who may come into contact with the own vehicle (hereinafter also referred to as "risk targets"), and information that alerts drivers to risk targets. Contains information.

More specifically, if there is a motorcycle operated by an unhealthy rider in front of the four-wheeled vehicle operated by the driver, the risk notification control device 227 prevents contact with the motorcycle. As risk avoidance support information, a message such as "Please be careful of dangerous right turns of motorcycles" is sounded by the audio device 221 or displayed on the head-up display 222. At this time, the risk notification control device 227 causes the head-up display 222 to display an image of an arrow pointing to the current position or predicted position of the motorcycle as risk avoidance support information for avoiding contact with the motorcycle. It's okay.

In addition, when the notification mode is set to the presence notification mode, the risk notification control device 227 extracts risk information from the cooperative support device 6 by operating the HMI 220 in a manner that does not bother the driver. To make a driver naturally aware of the existence of a risk target. In this way, in the presence notification mode, in order to make the driver naturally aware of the presence of a risk target without making the driver feel bothered, the risk notification control device 227, among the plurality of devices included in the HMI 220, particularly uses the driver's auditory sense. It is preferable to operate the headrest speaker 221a that appeals to the user. More specifically, when the notification mode is set to the presence notification mode, the risk notification control device 227 is set so that the headrest speaker 221a naturally directs the driver's line of sight to the position of the risk target. To generate a familiar sound effect using binaural sound at a low volume.

Furthermore, when the notification mode is set to the analog notification mode, the risk notification control device 227 extracts risk information from the cooperation support device 6 by operating the HMI 220 in a manner different from the above-mentioned presence notification mode. To make a driver strongly aware of the existence of a risk object and the degree of risk to this risk object. In this way, in the analog notification mode, in order to make the driver strongly aware of the existence of the risk target, the risk notification control device 227 operates the HMI 220 in a manner with higher notification intensity than the manner defined in the presence notification mode. Here, the notification strength refers to the strength of attracting the driver's interest and attention. More specifically, when the notification mode is set to the analog notification mode, the risk notification control device 227 causes the headrest speakers 221a and the main speakers 221b to generate sound effects that are louder than the sound effects produced under the presence notification mode. Produces a buzzer or pulse sound. These buzzer sounds and pulse sounds are sounds that are unfamiliar to the driver and are louder than the sound effects produced under the presence notification mode, so they are louder than the sound effects produced under the presence notification mode. The notification intensity is also high.

In addition, when the risk notification control device 227 changes the notification intensity according to the degree of risk, the risk notification control device 227 determines when the above-mentioned driving support ECU starts executing the collision mitigation brake control or collision avoidance steering control, in other words, the risk notification control device 227 changes the notification intensity according to the risk degree. It is preferable to operate the HMI 220 so that the notification intensity is maximized at the time when the target enters the ADAS operating range of the own vehicle.

In this embodiment, a case will be described in which the risk notification control device 227 operates the audio device 221 when the notification mode is set to the analog notification mode, but the present invention is not limited to this. When the notification mode is set to analog notification mode, the risk notification control device 227 operates the seat belt control device 223 instead of activating the sound device 221 to change the tension of the seat belt or activate the seat vibration device. 224 may be activated to vibrate the seat. In this way, the seat belt control device 223 and the seat vibration device 224 operate in a manner that appeals to the driver's tactile sense, so the notification intensity is higher than the sound effect produced in the presence notification mode. Further, the risk notification control device 227 may operate the sound device 221, the seat belt control device 223, and the seat vibration device 224 in combination when the notification mode is set to the analog notification mode.

Furthermore, as described above, in the analog notification mode, in order to make the driver strongly aware of the existence of a risk target and the degree of risk to this risk target, the risk notification control device 227 controls the risk information transmitted from the coordination support device 6. It is preferable to change the notification intensity according to the degree of risk for the risk object (for example, predicted collision time for the risk object) extracted from the above. Specifically, the risk notification control device 227 increases the volume of the buzzer sound, increases the volume of the pulse sound, and adjusts the interval between the pulse sounds as the degree of risk increases (that is, as the predicted collision time decreases). You may also shorten it. When operating the seat belt control device 223 as described above, the risk notification control device 227 may increase the tension of the seat belt as the degree of risk increases. Further, when operating the seat vibration device 224 as described above, the risk notification control device 227 may increase the amplitude of the seat vibration as the degree of risk increases.

Returning to FIG. 2, the mobile information processing terminal 25 is configured by, for example, a wearable terminal worn by the driver of the four-wheel vehicle 2, a smartphone owned by the driver, or the like. The wearable terminal has a function of measuring the driver's biometric information such as heart rate, blood pressure, and blood oxygen saturation, and transmitting the measured data of this biometric information to the coordination support device 6, and the function of transmitting the measurement data of this biometric information to the coordination support device 6. It has a function of receiving cooperative support information and notifying the driver of a message according to the cooperative support information using images, sounds, warning sounds, vibrations, etc. The smartphone also has a function of transmitting driver-related information such as the driver's location information, movement acceleration, and schedule information to the coordination support device 6, and receives coordination support information transmitted from the coordination support device 6, and performs this coordination. It has a function to notify the driver of a message according to the support information using images, sounds, warning sounds, melodies, vibrations, etc.

The in-vehicle device group 30 installed on the motorcycle 3 in the target traffic area 9 includes, for example, an in-vehicle driving support device 31 that supports driving by the rider, a notification device 32 that notifies the rider of various information, and a device that reports the rider's status while driving. It includes a rider state sensor 33 for detection, a portable information processing terminal 35 owned or worn by the rider, and the like.

The vehicle-mounted driving support device 31 includes an external world sensor unit, a vehicle state sensor, a navigation device, a driving support ECU, and the like. The external sensor unit consists of an external camera unit that photographs the surroundings of the vehicle, multiple on-vehicle external sensors installed in the vehicle such as a radar unit and lidar unit that detect objects outside the vehicle using electromagnetic waves, and these in-vehicle external sensors. The vehicle also includes an external recognition device that acquires information regarding the state of the surroundings of the vehicle by performing sensor fusion processing on detection results from the external sensor. The own vehicle state sensor is constituted by a sensor that acquires information regarding the running state of the own vehicle, such as a vehicle speed sensor and a 5-axis or 6-axis inertial measurement device. The navigation device includes, for example, a GNSS receiver that identifies the current position based on signals received from GNSS satellites, a storage device that stores map information, and the like.

The driving support ECU performs lane keeping control, lane departure prevention control, lane change control, preceding vehicle following control, false start prevention control, and other functions based on information acquired by the external sensor unit, own vehicle status sensor, navigation device, etc. Executes driving support control such as collision mitigation brake control. Further, the driving support ECU generates driving support information to support safe driving by the rider based on information acquired by the external sensor unit, the own vehicle status sensor, the navigation device, etc., and transmits it to the notification device 32. .

Here, the driving support ECU prevents contact between the own vehicle and another moving object, on the condition that there is a moving object that may come into contact with the own vehicle within a predetermined collision mitigation brake activation range centered on the own vehicle. Collision Mitigation Brake Control automatically operates the vehicle's braking system to reduce damage caused by collision. In addition, the driving support ECU prevents contact between the own vehicle and another moving object, provided that there is a moving object that may come into contact with the own vehicle within a predetermined collision avoidance steering operation range centered on the own vehicle. Starts collision avoidance control that automatically operates the vehicle's steering system to avoid a collision. Hereinafter, the collision mitigation brake operation range and the collision avoidance steering operation range will also be collectively referred to as the "ADAS operation range."

The rider condition sensor 33 is constituted by various devices that obtain information correlated with the driving ability of the rider while driving. The rider condition sensor 33 is, for example, a seat sensor that is installed on a seat on which a rider sits and detects the rider's pulse, whether or not he is breathing, or a seat sensor that is installed on a helmet that the rider wears and that detects the rider's pulse, whether he is breathing, and his skin. It is composed of a helmet sensor that detects electrical potential, etc.

The in-vehicle communication device 34 communicates information acquired by the driving support ECU (including information acquired by the external sensor unit, own vehicle state sensor, navigation device, etc., control information related to the driving support control being executed, etc.) and the rider state. A function of transmitting information regarding the rider acquired by the sensor 33 to the cooperation support device 6, a function of receiving cooperation support information transmitted from the cooperation support device 6, and transmitting the received cooperation support information to the notification device 32, Equipped with

The notification device 32 operates the HMI in a predetermined manner based on the driving support information transmitted from the in-vehicle driving support device 21 and the cooperation support information transmitted from the cooperation support device 6, thereby controlling the rider's auditory, visual, and It is composed of various devices that notify the rider of various information through the sense of touch and the like.

FIG. 3B is a block diagram showing the configuration of the notification device 32 mounted on the motorcycle. Note that FIG. 3B shows only blocks of the notification device 32 that are particularly related to control based on cooperation support information transmitted from the cooperation support device 6.

The notification device 32 includes an HMI 320 that operates in a manner that the rider can recognize, and an HMI control device 325 that operates the HMI 320 based on coordination support information transmitted from the coordination support device 6.

The HMI 320 includes a head-mounted speaker 321 that operates in a manner that is audible to the rider, and a head-up display 322 that operates in a manner that the rider can recognize visually.

The head-mounted speaker 321 is provided on a helmet worn by a rider, and is capable of emitting directional binaural sound. The head mounted speaker 321 produces sounds according to commands from the HMI control device 325. The head-up display 322 displays an image according to a command from the HMI control device 325 within the field of view of the rider while driving (for example, on the shield of a helmet).

The HMI control device 325 includes a health improvement control device 326 that operates the HMI 320 in a predetermined manner to restore the rider's driving ability (especially cognitive ability), and a health improvement control device 326 that makes the rider aware of the existence of approaching risks. and a risk notification control device 327 that operates the HMI 320 in a predetermined manner. As will be explained later, the cooperative support information sent from the cooperative support device 6 to the motorcycle 3 includes information regarding the health notification setting value for setting on/off of the health notification by the health restoration control device 326, and , information regarding risk notification setting values for setting on/off of risk notification and the type of notification mode by the risk notification control device 327, risk information regarding risks approaching the rider, and the like.

The health notification setting value input to the health restoration control device 326 is “0” which turns off the health notification by the health restoration control device 326, and “1” which turns on the health notification by the health restoration control device 326. ” is set to one of the following values.

When the health restoration notification setting value is "0", the health restoration control device 326 sets the health restoration notification to OFF. That is, the health control device 326 does not operate the HMI 320 when the health restoration notification set value is "0". Note that this does not prevent the risk notification control device 327 from operating the HMI 320.

When the health restoration notification setting value is "1", the health restoration control device 326 sets the health restoration notification to ON. More specifically, the health improvement control device 326 improves the rider's driving ability by, for example, making the head-mounted speaker 321 produce music that attracts the rider's interest. At this time, in order to increase the rider's level of arousal, the BPM of the music may be changed or the bass may be emphasized.

In this way, the health improvement control device 326 operates the HMI 320 in order to restore the rider's driving ability, so when the risk notification by the risk notification control device 327 described below is set to ON (i.e., the risk notification If the setting value is "1" or "2"), the health notification may be turned off so that the rider does not feel bothered.

The risk notification control device 327 is capable of performing risk notification under a plurality of notification modes in which at least one of the operation target device and operation mode of the HMI 320 is different. More specifically, the risk notification control device 327 uses a presence notification mode for the purpose of making the rider aware of the existence of a potential risk, and a notice notification mode for making the rider aware of the existence of an actual risk and/or the degree of this risk. Risk notification under at least one of the following notification modes: an analog notification mode that aims to inform the rider of the risk, and a predictive support notification mode that aims to notify the rider of useful information to avoid the predicted risk. It is now possible to do this. Therefore, the risk notification setting value input to the risk notification control device 327 is “0”, which sets the risk notification by the risk notification control device 327 to OFF, and “0”, which sets the risk notification by the risk notification control device 327 to ON, and “1” sets the notification mode to the indication notification mode and the prediction support notification mode, and “2” sets the risk notification by the risk notification control device 327 to ON and sets the notification mode to the analog notification mode and the prediction support notification mode. It is set to one of the following values.

The risk notification control device 327 turns off the risk notification when the risk notification setting value is "0". That is, the risk notification control device 327 does not operate the HMI 320 when the risk notification setting value is "0". Note that this does not prevent the health control device 326 from operating the HMI 320.

When the risk notification setting value is “1”, the risk notification control device 327 sets the notification mode to the indication notification mode and the prediction support notification mode, and turns on the risk notification under these set notification modes. do.

Further, when the risk notification setting value is "2", the risk notification control device 327 sets the notification mode to analog notification mode and predictive support notification mode, and turns on risk notification under these set notification modes. Make it.

Here, when the notification mode is set to the predictive support notification mode, the risk notification control device 327 provides information useful for avoiding risks approaching the rider based on the risk information transmitted from the cooperative support device 6. The system generates risk avoidance support information, and operates the head-mounted speaker 321 and head-up display 322 of the HMI 320 in such a manner that the rider can recognize this risk avoidance support information audibly or visually. Here, the risk avoidance support information includes information regarding the location of a risk object that may come into contact with the own vehicle, and information that calls the rider's attention to the risk object.

More specifically, the risk notification control device 327 avoids contact with a four-wheeled vehicle driven by an unsound driver if there is a four-wheeled vehicle in front of the motorcycle driven by the rider. As risk avoidance support information, a message such as "Please be careful of dangerous right turns by four-wheelers" is sounded by the head-mounted speaker 321 or displayed on the head-up display 322. At this time, the risk notification control device 327 displays an image of an arrow pointing to the current position or predicted position of the four-wheeled vehicle on the head-up display 322 as risk avoidance support information for avoiding contact with the four-wheeled vehicle. It may be displayed.

Further, when the notification mode is set to the presence notification mode, the risk notification control device 327 operates the HMI 320 in a manner that does not cause the rider to feel bothered, so that the risk information is extracted from the risk information transmitted from the cooperation support device 6. To make riders naturally aware of the existence of risk targets. In this way, in the presence notification mode, in order to make the rider naturally recognize the presence of the risk target without making the rider feel bothered, the risk notification control device 327 is configured to select a device that particularly appeals to the rider's hearing among the multiple devices included in the HMI 320. Preferably, the head mounted speaker 321 is activated. More specifically, the risk notification control device 327 is configured so that when the notification mode is set to the presence notification mode, the rider's line of sight is naturally directed to the position of the risk target using the head-mounted speaker 321. To generate a familiar sound effect using binaural sound at a low volume.

In addition, when the notification mode is set to analog notification mode, the risk notification control device 327 extracts risk information from the cooperation support device 6 by operating the HMI 320 in a manner different from the above-mentioned presence notification mode. To make riders strongly aware of the existence of a risk target and the degree of risk to this risk target. In this way, in the analog notification mode, in order to make the rider strongly aware of the existence of the risk target, the risk notification control device 327 operates the HMI 320 in a manner with higher notification intensity than the manner determined in the presence notification mode. More specifically, when the notification mode is set to the analog notification mode, the risk notification control device 327 causes the head-mounted speaker 321 to generate a buzzer sound that is louder than the sound effect produced under the presence notification mode. Make a pulse sound. These buzzer sounds and pulse sounds are sounds that riders are not used to hearing and are louder than the sound effects produced under the presence notification mode, so they are louder than the sound effects produced under the presence notification mode. Notification strength is high.

Furthermore, as described above, in the analog notification mode, in order to make the rider strongly aware of the degree of risk to this risk object in addition to the existence of the risk object, the risk notification control device 327 uses the risk information transmitted from the coordination support device 6. It is preferable to change the notification intensity according to the degree of risk for the extracted risk object (for example, the predicted collision time for the risk object). Specifically, the risk notification control device 327 increases the volume of the buzzer sound, increases the volume of the pulse sound, and adjusts the interval between the pulse sounds as the degree of risk increases (that is, as the predicted collision time decreases). You may also shorten it.

In addition, when changing the notification intensity according to the degree of risk in this way, the risk notification control device 327 determines when the above-mentioned driving support ECU starts executing the collision mitigation brake control, in other words, when the risk target is the own vehicle. It is preferable to operate the HMI 320 so that the notification intensity is maximized at the time when the ADAS operation range is entered.

Returning to FIG. 2, the mobile information processing terminal 40 owned or worn by the pedestrian 4 in the target traffic area 9 is configured by, for example, a wearable terminal worn by the pedestrian 4, a smartphone owned by the pedestrian 4, or the like. The wearable terminal measures biometric information of the pedestrian 4 such as heart rate, blood pressure, and blood oxygen saturation, and transmits the measured data of this biometric information to the coordination support device 6 or is transmitted from the coordination support device 6. It has a function to receive cooperative support information. The smartphone also transmits pedestrian information regarding the pedestrian 4 such as location information, movement acceleration, and schedule information of the pedestrian 4 to the coordination support device 6, and receives coordination support information transmitted from the coordination support device 6. Equipped with functions to

Furthermore, the mobile information processing terminal 40 is a notification device that notifies pedestrians of various information through their auditory, visual, and tactile senses by operating the HMI in a predetermined manner based on the received coordination support information. 42.

FIG. 3C is a block diagram showing the configuration of the notification device 42 installed in the mobile information processing terminal 40. Note that FIG. 3C shows only blocks of the notification device 42 that are particularly related to control based on cooperation support information transmitted from the cooperation support device 6.

The notification device 42 includes an HMI 420 that operates in a manner recognizable to pedestrians, and an HMI control device 425 that operates the HMI 420 based on coordination support information transmitted from the coordination support device 6.

The HMI 420 includes a speaker 421 that operates in a manner that a pedestrian can recognize by hearing, and a vibration device 424 that operates in a manner that can be recognized by a pedestrian's sense of touch.

The speaker 421 produces sounds according to commands from the HMI control device 425. The vibration device 424 vibrates the main body of the mobile information processing terminal 40 at an amplitude and/or frequency in a manner according to a command from the HMI control device 425 .

As will be explained later, in the cooperative support information transmitted from the cooperative support device 6 to the mobile information processing terminal 40 owned by the pedestrian, the HMI control device 425 sets risk notification on/off and the type of notification mode. This includes information on risk notification settings for pedestrians, risk information on risks that approach pedestrians, etc.

The HMI control device 425 can perform risk notification under a plurality of notification modes in which at least one of the operating target device and the operating mode of the HMI 420 is different. More specifically, the HMI control device 425 uses a presence notification mode that aims to make pedestrians aware of the existence of potential risks, and the presence of risks that have become apparent to pedestrians and/or the degree of this risk. It is possible to provide risk notification under at least one of the analog notification modes that aim to make people aware of risks. Therefore, the risk notification settings input to the HMI control device 425 are "0", which sets the risk notification by the HMI control device 425 to OFF, and "0", which sets the risk notification by the HMI control device 425 to ON, and the notification mode. The value is set to either "1", which sets the indication notification mode, or "2", which turns on the risk notification by the HMI control device 425 and sets the notification mode to the analog notification mode.

When the risk notification setting value is "0", the HMI control device 425 sets the risk notification to OFF. That is, when the HMI control device 425 and the risk notification setting value are "0", the HMI 420 is not operated.

When the risk notification setting value is "1", the HMI control device 425 sets the notification mode to the indication notification mode and turns on the risk notification under the set notification mode.

Further, when the risk notification setting value is "2", the HMI control device 425 sets the notification mode to analog notification mode and turns on the risk notification under the set notification mode.

Here, when the notification mode is set to the presence notification mode, the HMI control device 425 extracts risk information transmitted from the cooperation support device 6 by operating the HMI 420 in a manner that does not bother pedestrians. To make pedestrians naturally aware of the existence of risk targets. More specifically, when the notification mode is set to the presence notification mode, the HMI control device 425 operates the vibration device 424 to cause the main body of the mobile information processing terminal 40 to move under a predetermined amplitude and frequency. make it vibrate.

Furthermore, when the notification mode is set to the analog notification mode, the HMI control device 425 operates the HMI 420 in a manner different from the above-mentioned presence notification mode, thereby extracting risk information from the risk information transmitted from the coordination support device 6. Make pedestrians strongly aware of the existence of the risk aspect and the degree of risk to this risk object. In this way, in the analog notification mode, in order to make pedestrians strongly aware of the presence of the risk target, the HMI control device 425 operates the HMI 420 in a manner with higher notification intensity than the manner defined in the presence notification mode. More specifically, when the notification mode is set to analog notification mode, the HMI control device 425 causes the speaker 421 to emit a buzzer sound, a pulse sound, a message indicating that a risk exists, or the like.

In addition, as described above, in the analog notification mode, in order to make pedestrians strongly aware of the presence of a risk target and the degree of risk to this risk target, the HMI control device 425 uses the risk information transmitted from the coordination support device 6. It is preferable to change the notification intensity according to the degree of risk for the extracted risk object (for example, the predicted collision time for the risk object). Specifically, the HMI control device 425 increases the volume of the buzzer sound, the volume of the pulse sound, and the interval between the pulse sounds as the risk level increases (that is, the shorter the collision prediction time becomes). You may shorten the message, increase the volume of the message, or change the content of the message.

Returning to FIG. 2, the infrastructure camera 56 captures images of traffic infrastructure facilities including roadways, intersections, and sidewalks in the target traffic area, as well as moving objects and pedestrians moving on these roadways, intersections, and sidewalks. The image information thus obtained is transmitted to the cooperation support device 6.

The signal control device 55 controls the traffic lights and transmits traffic light status information regarding the current lighting color of the traffic lights provided in the target traffic area, the timing of switching the lighting colors, etc. to the cooperation support device 6.

The coordination support device 6 generates coordination support information for promoting communication between each traffic participant and recognition of the surrounding traffic environment based on information acquired from a plurality of area terminals existing in the target traffic area as described above. This is a computer that supports safe and smooth traffic for traffic participants in the target traffic area by generating the information for each traffic participant to be supported and notifying each traffic participant. In this embodiment, the coordination support information generated by the coordination support device 6 is received among a plurality of traffic participants existing in the target traffic area, and the HMI is operated in a predetermined manner based on the received coordination support information. The cooperation support device 6 supports traffic participants who are equipped with means (for example, notification devices 22, 32, and 42) to notify the user.

The coordination support device 6 includes a target traffic area recognition unit 60 that recognizes people and moving objects in the target traffic area as individual traffic participants, and a driving system of the mobile objects recognized as traffic participants by the target traffic area recognition unit 60. A driving subject information acquisition unit 61 that acquires driving subject state information that correlates with the subject's driving ability, a prediction unit 62 that predicts the future of traffic participants in the target traffic area, and a target traffic area recognition unit 60 are used as support targets. A sanitation notification setting unit 63 sets the sanitation notification on/off for each recognized individual traffic participant, and a target traffic area recognition unit 60 sets the sanitation notification on/off for each individual traffic participant recognized as a support target. A risk notification setting unit 64 that sets the notification mode of risk notification, and a cooperative support information notification unit 65 that transmits cooperative support information generated for each individual traffic participant recognized as a support target by the target traffic area recognition unit 60. , a traffic environment database 67 that stores information regarding the traffic environment of the target traffic area, and a driving history database 68 that stores information regarding past driving histories of pre-registered driving subjects.

The traffic environment database 67 includes pre-registered map information of the target traffic area (for example, the width of the roadway, the number of lanes, the speed limit, the width of the sidewalk, the presence or absence of guardrails between the roadway and the sidewalk, and the location of crosswalks). etc.) and risk area information regarding particularly high-risk areas in the target traffic area, information regarding the traffic environment of traffic participants in the target traffic area is stored. In the following, the information stored in the traffic environment database 67 will also be referred to as registered traffic environment information.

The driving history database 68 stores information regarding the past driving history of a driving subject registered in advance in association with the registration number of a mobile object owned by this driving subject. Therefore, if the registration number of the recognized moving object can be specified by the target traffic area recognition unit 60, which will be described later, the recognized movement can be performed by searching the driving history database 68 based on this registration number. It is possible to obtain the past driving history of the person driving the vehicle. Hereinafter, the information stored in the driving history database 68 will also be referred to as registered driving history information.

The target traffic area recognition unit 60 uses information transmitted from the area terminals (vehicle devices 20 and 30, mobile information processing terminal 40, infrastructure camera 56, and signal control device 55) in the target traffic area, and a traffic environment database 67. Based on the registered traffic environment information read from Obtain recognition information about.

Here, information transmitted from the in-vehicle driving support device 21 and in-vehicle communication device 24 included in the in-vehicle device group 20 to the target traffic area recognition unit 60, and the in-vehicle driving support device 31 and in-vehicle communication device 34 included in the in-vehicle device group 30 are transmitted. The information sent to the target traffic area recognition unit 60 includes information regarding the traffic participants and traffic environment surrounding the vehicle acquired by the external sensor unit, and information acquired by the vehicle status sensor, navigation device, etc. This information includes information regarding the status of one's own vehicle as a traffic participant. Furthermore, the information transmitted from the mobile information processing terminal 40 to the target traffic area recognition unit 60 includes information regarding the state of the pedestrian as a traffic participant, such as position and movement acceleration. In addition, the image information sent from the infrastructure camera 56 to the target traffic area recognition unit 60 includes the appearance of traffic infrastructure facilities such as roadways, intersections, and sidewalks in the target traffic area, and the appearance of traffic participants moving in the target traffic area. It includes information about each traffic participant and their traffic environment, such as their appearance. Further, the traffic light status information transmitted from the signal control device 55 to the target traffic area recognition unit 60 includes information regarding the traffic environment of each traffic participant, such as the current lighting color of the traffic light and the timing of switching the lighting color. Furthermore, the registered traffic environment information that the target traffic area recognition unit 60 reads from the traffic environment database 67 includes information regarding the traffic environment of each traffic participant, such as map information of the target traffic area and risk area information.

Therefore, in the target traffic area recognition unit 60, based on the information transmitted from these area terminals, the position, moving speed, moving acceleration, moving direction, and vehicle type of the moving object in the target traffic area of each traffic participant in the target traffic area. , obtain recognition information of each traffic participant (hereinafter also referred to as "traffic participant recognition information"), such as the vehicle class of the mobile object, the registration number of the mobile object, the number of pedestrians, and the age group of the pedestrians. be able to. In addition, the target traffic area recognition unit 60 determines the width of the roadway, the number of lanes, the speed limit, the width of the sidewalk, the presence or absence of a guardrail between the roadway and the sidewalk, and the lighting color of the traffic light based on the information transmitted from these area terminals. It is possible to obtain traffic environment recognition information (hereinafter also referred to as "traffic environment recognition information") of each traffic participant in the target traffic area, such as the switching timing and risk area information.

Therefore, in this embodiment, the recognition means for recognizing traffic participants and the traffic environment in the target traffic area includes the target traffic area recognition unit 60, the vehicle-mounted driving support device 21 included in the vehicle-mounted device group 20 of the four-wheel vehicle 2, and the vehicle-mounted The communication device 24 and the mobile information processing terminal 25, the in-vehicle driving support device 31, the in-vehicle communication device 34, and the mobile information processing terminal 35 included in the in-vehicle device group 30 of the motorcycle 3, and the mobile information processing terminal 40 of the pedestrian 4. , an infrastructure camera 56, a signal control device 55, and a traffic environment database 67.

The target traffic area recognition unit 60 uses the traffic participant recognition information and traffic environment recognition information acquired in the above manner to the driving subject information acquisition unit 61, the prediction unit 62, the health notification setting unit 63, and the risk notification setting unit 64. , and the cooperative support information notification unit 65, etc.

The driving entity information acquisition unit 61 recognizes the target traffic area based on the information transmitted from the area terminals (in particular, the in-vehicle device groups 20 and 30) in the target traffic area and the registered driving history information read from the driving history database 68. Driving subject state information and driving subject characteristic information that are correlated with the current driving ability of the driving subject of the mobile object recognized by the unit 60 as a traffic participant are acquired.

More specifically, if the driver of the four-wheeled vehicle recognized by the target traffic area recognition unit 60 as a traffic participant is a person, the driving entity information acquisition unit 61 determines whether the vehicle-mounted vehicle installed in this four-wheeled vehicle is The information transmitted from the device group 20 is acquired as the driver's main driving state information. In addition, when the driver of the motorcycle recognized as a traffic participant by the target traffic area recognition unit 60 is a human, the driver information acquisition unit 61 receives information transmitted from the in-vehicle device group 30 mounted on this motorcycle. The information is acquired as the rider's driving main state information.

Here, the information transmitted from the driver's main state sensor 23 and the in-vehicle communication device 24 included in the in-vehicle device group 20 to the driver's main information acquisition unit 61 includes the driver's appearance such as the direction of the driver's line of sight and whether or not the eyes are open while driving. Information, biological information such as pulse rate, presence or absence of breathing, skin potential, etc., audio information such as presence or absence of conversation, etc., and includes information that is correlated with the driving ability of the driver while driving. Information transmitted from the rider status sensor 33 and the vehicle communication device 34 included in the vehicle-mounted device group 30 to the driver-based information acquisition unit 61 includes time-lapse data regarding biological information such as the rider's pulse, breathing status, and skin potential. It includes information that is correlated with the rider's driving ability while driving. Further, the information transmitted from the portable information processing terminals 25 and 35 included in the in-vehicle device group 20 and 30 to the driving subject information acquisition unit 61 includes schedule information of the driver and the individual rider. For example, when a driver or rider is driving a mobile object under a tight schedule, they may become impatient and their driving ability may deteriorate. Therefore, it can be said that schedule information of an individual driver or rider is information that is correlated with their own driving ability.

The driving subject information acquisition unit 61 uses either or both of the driving subject status information for the driving subject obtained through the above procedure and the registered driving history information read from the driving history database 68 to obtain the current state of the driving subject while driving. Obtains driving subject characteristic information related to the driving subject's driving characteristics (for example, too many sudden lane changes, too many sudden accelerations and decelerations, etc.) that are correlated with the driving ability of the driver.

The driving entity information acquisition unit 61 transmits the driving entity status information and driving entity characteristic information of the driving entity acquired as described above to the prediction unit 62, the health notification setting unit 63, the risk notification setting unit 64, and the cooperation support information. The information is transmitted to the notification unit 65 or the like.

The prediction unit 62 extracts a part of the traffic area in the target traffic area as a monitoring area, and predicts the future of a plurality of traffic participants in this monitoring area based on the traffic participant recognition acquired by the target traffic area recognition unit 60. The prediction is made based on information, traffic environment recognition information, and the driving entity state information and driving entity characteristic information acquired by the driving entity information acquisition unit 61. More specifically, the prediction unit 62 constructs a virtual space that simulates the monitoring area based on the traffic participant recognition information and the traffic environment recognition information acquired by the target traffic area recognition unit 60, and also constructs a virtual space that simulates the monitoring area based on the traffic participant recognition information. The future of each traffic participant in the monitoring area is predicted by performing a simulation in a virtual space based on traffic environment recognition information, driver status information, and driver characteristic information. Note that a detailed explanation of the specific procedure for predicting the future of each traffic participant in the monitoring area by the prediction unit 62 will be omitted.

Here, the target traffic area is a relatively wide traffic area defined for each municipality, for example. On the other hand, the monitoring area is a traffic area, such as an intersection or the vicinity of a specific facility, that a four-wheeled vehicle can pass through in about several tens of seconds when moving at a legal speed. That is, the monitoring area is narrower than the target traffic area, but wider than the ADAS operation range by the driving support ECU mounted on each moving object.

The health improvement notification setting unit 63 targets the traffic participants who are recognized as support targets and moving bodies by the target traffic area recognition unit 60 among the plurality of traffic participants existing in the target traffic area, and configures the individual settings. Set the health notification on/off for each target.

More specifically, first, the health improvement notification setting unit 63 acquires driving entity state information and driving entity characteristic information associated with each setting target driving entity, which is a moving body, from the driving entity information acquisition unit 61. Furthermore, the health notification setting unit 63 calculates the current health level of the driving subject for each setting target based on the acquired driving subject status information and driving subject characteristic information. In addition, if the health level calculated for each setting target is less than a predetermined soundness threshold, the health notification setting unit 63 determines that the driving subject of the setting target is in an unhealthy state, and In order to turn on the health improvement notification for the target, set the health improvement notification setting value to "1". In addition, when the health level calculated for each setting target is equal to or higher than the health level threshold, the health notification setting unit 63 determines that the driving entity of the setting target is in a healthy state, and the health status of the setting target is determined to be healthy. In order to turn off the notification, set the health improvement notification setting value for the setting target to "0".

The health notification setting unit 63 sets the health notification on or off for a plurality of setting targets within the target traffic area through the above-described procedure. Information regarding the restoration notification setting value set for each setting target by the restoration notification setting unit 63 is transmitted to the cooperation support information notification unit 65.

The risk notification setting unit 64 selects a traffic participant who is recognized as a support target by the target traffic area recognition unit 60 among a plurality of traffic participants existing in the monitoring area extracted from the target traffic area by the prediction unit 62. Set the risk notification on/off and notification mode for each setting target.

More specifically, the risk notification setting unit 64 uses information related to the monitoring area among the traffic participant recognition information and traffic environment recognition information acquired by the target traffic area recognition unit 60 and the information acquired by the driving subject information acquisition unit 61. Based on the information related to the monitoring area among the acquired driving subject status information and driving subject characteristic information, and the prediction result for the monitoring area by the prediction unit 62, risk notifications for each setting target existing in the monitoring area are calculated. Set on/off and notification mode.

In the following, a specific procedure for setting the risk notification on/off and notification mode for each setting target by the risk notification setting unit 64 will be explained, for example, when the road R1 as shown in FIG. 4 is set as the monitoring area. .

FIG. 4 is a schematic diagram for explaining the situation of the four-wheeled vehicle 2 and the motorcycle 3 on the road R1 as the monitoring area. In the example shown in FIG. 4, the road R1 as the monitoring area includes a road R11 with one lane on each side and a road R12 that intersects with the road R11 at an intersection. 3 is traveling straight in the lane of road R12. Further, the driving priority of the road R12 is higher than the driving priority of the road R11. The four-wheeled vehicle 2 is about to go straight through an intersection where a traffic sign B indicating a temporary stop has been installed.

The driver of the four-wheeled vehicle 2 has a poor view of the right side in the direction of travel due to the obstacle A provided on the sidewalk adjacent to the road R11, making it difficult to recognize the motorcycle 3. Furthermore, the driver of the four-wheeled vehicle 2 is required to follow the temporary stop traffic sign B and make a temporary stop at the intersection, but there is a possibility that the driver does not make a temporary stop. Note that the traffic sign B may be another road sign at which the four-wheeled vehicle 2 should stop or temporarily stop, or may be a road marking. In such a situation, there is a possibility that the four-wheeled vehicle 2 and the motorcycle 3 will collide at the intersection.

In the example shown in FIG. 4, the risk notification setting unit 64 is a moving object that approaches the motorcycle 3 from the side in the direction of movement of the motorcycle 3 within the presence notification activation range that includes the ADAS range, and Based on the speed and position of the motorcycle 3 and the four-wheeled vehicle 2 recognized by the recognition means and the driver's main characteristic information of the driver of the four-wheeled vehicle 2 acquired by the driver's main information acquisition unit 61, If there is a possibility of a collision between the motorcycle 3 and the four-wheeled vehicle 2, the notification mode of the risk notification control device 327 is set to the presence notification mode. Furthermore, if the four-wheeled vehicle 2 exists within the second range and the speed of the four-wheeled vehicle 2 exceeds a predetermined speed, the risk notification setting unit 64 sets the notification mode of the risk notification control device 327 to the analog notification mode. .

Here, the presence notification operation range includes the ADAS operation range, and when the distance between the motorcycle 3 and the four-wheeled vehicle 2 becomes close, the notification mode is set to analog notification mode, and the risk notification is sent in the presence notification mode. This is the operating range for this purpose. That is, the presence notification operating range is wider than the ADAS operating range.

Further, as described above, the risk notification setting unit 64 sets the risk notification setting value input to each of the risk notification control device 227 and the risk notification control device 327 to “1”, thereby controlling the risk notification control device 227. By setting the respective notification modes of the risk notification control device 327 and the risk notification control device 327 to the indication notification mode, and setting the risk notification setting value input to each of the risk notification control device 227 and the risk notification control device 327 to “2”, The notification mode of each of the risk notification control device 227 and the risk notification control device 327 is set to analog notification mode.

Specifically, the risk notification setting unit 64 is a moving object in which the four-wheeled vehicle 2 approaches the motorcycle 3 from the side in the direction of movement of the motorcycle 3 within the presence notification activation range around the motorcycle 3; If the four-wheeled vehicle 2 is present in a blind spot of the motorcycle 3 due to the obstacle A, the risk notification control device determines that there is a possibility of a collision between the two-wheeled vehicle 3 and the four-wheeled vehicle 2 near the intersection. 327 notification mode to the sign notification mode.

The risk notification setting unit 64 also specifies that the four-wheeled vehicle 2 is a moving object that approaches the motorcycle 3 from the side in the traveling direction of the motorcycle 3 and that the four-wheeled vehicle 2 is a moving object that approaches the motorcycle 3 from the side in the traveling direction of the motorcycle 3 within the presence notification activation range around the motorcycle 3 . When the predicted travel route of the motorcycle 3 and the predicted travel route of the four-wheeled vehicle 2 traveling straight ahead overlap, it is determined that there is a possibility of a collision between the motorcycle 3 and the four-wheeled vehicle 2 near the intersection, and the risk notification control device 327 notification mode to the sign notification mode. Here, the predicted travel route of the motorcycle 3 and the predicted travel route of the four-wheeled vehicle 2 may be determined based on the speed and position of the motorcycle 3 and the four-wheeled vehicle 2 recognized by the recognition means, for example, and the prediction unit 62 may be predicted.

In addition, the risk notification setting unit 64 determines whether the driver characteristic information of the driver of the four-wheeled vehicle 2 acquired by the driving agent information acquisition unit 61 indicates a tendency to be impatient, a tendency to get excited, a tendency not to obey traffic laws, etc. If included, the notification mode of the risk notification control device 327 is set to the indication notification mode.

Further, the risk notification setting unit 64 indicates that the driver's main state information of the driver of the four-wheeled vehicle 2 acquired by the driver's main information acquisition unit 61 indicates that the driver is a low alert driver, such as falling asleep or being distracted. If the condition is included, the notification mode of the risk notification control device 327 is set to the indication notification mode.

Further, the traveling speed of the four-wheeled vehicle 2 is measured in advance, and the required stopping distance D required for the four-wheeled vehicle 2 to stop is calculated in advance and stored in the storage device of the cooperation support device 6 or the like. Then, the risk notification setting unit 64 determines whether the four-wheeled vehicle 2 does not decelerate even if the distance from the location of the four-wheeled vehicle 2 to the intersection becomes less than the required stopping distance D from the intersection, that is, the speed of the four-wheeled vehicle 2. exceeds a predetermined speed to be decelerated, the notification mode of the risk notification control device 327 is set to analog notification mode.

Further, the risk notification setting unit 64 may change the value of the predetermined speed based on the weather condition and road surface condition on the road R1 recognized by the recognition means.

Specifically, the risk notification setting unit 64 sets the predetermined speed value to Change to a lower value.

In addition, the risk notification setting unit 64 determines that if the road surface condition of the road R1 recognized by the recognition means is frozen or snowy, the possibility of a collision is high, so the predetermined speed is Change the value to a lower value.

Further, the risk notification setting unit 64 sets the notification timing in the presence notification mode or the analog notification mode based on the visibility information indicating the state of visibility near the intersection recognized by the recognition means.

Specifically, when the visibility information indicating the state of visibility near the intersection recognized by the recognition means indicates that the visibility is sufficient for the driver, the risk notification setting unit 64 selects the presence notification mode or the analog notification mode. Set the notification timing to be later than the standard notification timing.

In addition, the risk notification setting unit 64 is configured to determine whether the visibility information indicating the state of visibility near the intersection recognized by the recognition means is insufficient for the driver, such as blocking the driver's view or creating a blind spot for the driver. When indicating visibility, the notification timing in the presence notification mode or analog notification mode is set earlier than the standard notification timing.

In the above example, the risk notification setting unit 64 sets the notification mode of the risk notification control device 327 of the motorcycle 3 to the presence notification mode or the analog notification mode, but the risk notification setting unit 64 is not limited to this. may set both the risk notification control device 227 and the risk notification control device 327 to the indication notification mode or the analog notification mode. In addition, when the surrounding moving object has the in-vehicle device group 20 or the in-vehicle device group 30 like the four-wheeled vehicle 2 and the motorcycle 3, the risk notification setting unit 64 controls the risk notification control device 227 and the risk notification control device of the surrounding moving object. The device 327 may be set to a presence notification mode or an analog notification mode.

Returning to FIG. 2, the coordination support information notification unit 65 collects the traffic participant recognition information and traffic environment recognition information acquired by the target traffic area recognition unit 60, and the driving entity status information and driving entity state information acquired by the driving entity information acquisition unit 61. The driver characteristic information, the prediction result by the prediction unit 62, the information regarding the health restoration setting value set by the health restoration notification setting unit 63, and the information regarding the risk notification setting value set by the risk notification setting unit 64. Based on this, the target traffic area recognition unit 60 provides cooperative support information to each traffic participant recognized as a support target to encourage communication with surrounding traffic participants and awareness of the surrounding traffic environment. The generated cooperative support information is then sent to each transportation participant.

Here, the cooperative support information sent from the cooperative support information notification unit 65 to each support target includes information regarding health setting values, information regarding risk notification settings, and risk information regarding risks approaching each support target. and are included. Here, the risk information includes, for example, prediction results by the prediction unit 62, information regarding the positions of traffic participants around each traffic participant, and the like.

According to the traffic safety support system 1 according to this embodiment, the following effects are achieved.
(1) In the traffic safety support system 1, the risk notification control device 327 operates the HMI 320 in the first notification mode when the notification mode is set to the presence notification mode, and when the notification mode is set to the analog notification mode. The risk notification setting unit 64 operates the HMI 320 in a second notification mode that has higher notification intensity than the first notification mode, and the risk notification setting unit 64 determines the traveling direction of the motorcycle 3 within the presence notification operation range that includes the ADAS range. The speed and position of the motorcycle 3 and the four-wheeled vehicle 2, which are moving objects approaching the motorcycle 3 from the side and recognized by the recognition means, and the speed and position of the four-wheeled vehicle 2 acquired by the driving subject information acquisition unit 61. If there is a possibility of a collision between the motorcycle 3 and the four-wheeled vehicle 2 near the intersection, the notification mode of the risk notification control device 327 is set to the presence notification mode based on the driver's driving main characteristic information. Furthermore, if the four-wheeled vehicle 2 exists within the second range and the speed of the four-wheeled vehicle 2 exceeds a predetermined speed, the risk notification setting unit 64 sets the notification mode of the risk notification control device 327 to the analog notification mode. . As a result, in a situation where the motorcycle 3 is about to proceed straight through an intersection and the four-wheeled vehicle 2 is approaching the intersection, the traffic safety support system 1 notifies the vehicle in advance in the first notification mode, and When the speed of the automobile 2 exceeds a predetermined speed, notification can be performed in the second notification mode. Therefore, the traffic safety support system 1 detects that the motorcycle 3 is about to go straight through the intersection and the four-wheeled vehicle 2 is approaching the intersection because the notification intensity of the first notification mode performed in advance is lower than the second notification mode. In such a situation, it is possible to both suppress the troublesome notification to the rider of the motorcycle 3 and ensure traffic safety.

(2) In the traffic safety support system 1, the risk notification setting unit 64 changes the value of the predetermined speed based on the weather condition and road surface condition on the road R1 recognized by the recognition means. As a result, the traffic safety support system 1 changes the timing of notifications according to the weather conditions and road surface conditions in the monitoring area, thereby reducing the inconvenience of notifications to the rider of the motorcycle 3 and improving traffic safety. It is possible to achieve both security and security.

(3) In the traffic safety support system 1, the risk notification setting unit 64 sets the notification timing in the presence notification mode or the analog notification mode based on the visibility information indicating the visibility state near the intersection recognized by the recognition means. . As a result, the traffic safety support system 1 reduces the inconvenience of notifications to the rider of the motorcycle 3 by changing the notification timing according to visibility information indicating the visibility state of the intersection, that is, the degree of visibility of the intersection. It is possible to achieve both control and ensuring traffic safety.

(4) In the traffic safety support system 1, the risk notification setting unit 64 determines the degree of risk between the four-wheeled vehicle 2 and the motorcycle 3 when the notification mode of the risk notification control device 327 is set to analog notification mode. Change the notification intensity depending on the As a result, the traffic safety support system 1 can strongly notify the rider of the motorcycle 3 of the approach of the four-wheeled vehicle 2 when the degree of risk is high, and when the degree of risk is low, the traffic safety support system 1 can strongly notify the rider of the motorcycle 3 that the four-wheeled vehicle 2 is approaching. The presence of the four-wheeled vehicle 2 can be communicated at a level that is not bothersome.

(5) In the traffic safety support system 1, the motorcycle 3 to be supported automatically operates at least one of the braking device and the steering device on the condition that there is a moving object within the ADAS range that may come into contact with it. It includes an in-vehicle driving support device 31 to be operated. Thereby, the traffic safety support system 1 can reduce the possibility of a collision between the four-wheeled vehicle 2 and the motorcycle 3 using the on-vehicle driving support device 31, and can ensure traffic safety.

Although one embodiment of the present invention has been described above, the present invention is not limited to this. The detailed structure may be changed as appropriate within the spirit of the present invention. For example, in the embodiment described above, the recognition means for recognizing traffic participants and the traffic environment in the monitoring area around the support target, which is a moving body, and the notification mode setting means for setting the notification mode of the support target are each connected to the target traffic area recognition unit. Although a case has been described in which the risk notification setting unit 60 and the risk notification setting unit 64 are provided in the cooperation support device 6 that can wirelessly communicate with the support target, the present invention is not limited to this. The recognition means and the notification mode setting means may be configured by an in-vehicle device mounted on the support target. In this case, the range of the monitoring area recognized by the recognition means is limited to the range that can be recognized by the external sensor mounted on the support target, but there is an advantage that delays due to communication are small.

1...Traffic safety support system 9...Target traffic area 2...Four-wheel vehicle (first moving object, traffic participant)
20... Vehicle-mounted device group 21... Vehicle-mounted driving support device (recognition means, driving support device)
22...Notification device 23...Driving subject state sensor 24...In-vehicle communication device (recognition means)
25...Mobile information processing terminal (recognition means)
3...Motorcycle (second moving object, traffic participant)
30... Vehicle-mounted device group 31... Vehicle-mounted driving support device (recognition means, driving support device)
32...Notification device 33...Rider status sensor 34...In-vehicle communication device (recognition means)
35...Mobile information processing terminal (recognition means)
4...Pedestrians (people, traffic participants)
40...Mobile information processing terminal (recognition means)
51…Roadway (traffic environment)
52…Intersection (traffic environment)
53…Sidewalk (traffic environment)
54…Traffic light (traffic environment)
55...Signal control device (recognition means)
56...Infrastructure camera (recognition means)
6...Coordination support device 60...Target traffic area recognition unit (recognition means)
61... Driving subject information acquisition unit (driving characteristic acquisition means)
62...Prediction unit (prediction means)
63... Health improvement notification setting unit 64... Risk notification setting unit (notification mode setting means)
65...Cooperative support information notification unit 67...Traffic environment database (recognition means)
68...Driving history database 220 HMI (Man Machine Interface)
225 HMI control device 226 Health control device 227 Risk notification control device (notification control means)
320 HMI (Man Machine Interface)
325 HMI control device 326 Health control device 327 Risk notification control device (notification control means)
420 HMI (Man Machine Interface)
425 HMI control device

Claims (5)

A traffic safety support system that supports driving by a support target driver who is a first moving object,
recognition means for recognizing traffic participants and traffic environments in a monitoring area surrounding the support target;
a man-machine interface that operates in a manner perceptible to the driver;
While the recognition means recognizes the presence of a second moving body within the monitoring area and outside the first range centered on the support target, the man-machine interface is activated based on the recognition result by the recognition means. notification mode setting means for setting a notification mode;
When the notification mode is set to a first mode, the man-machine interface is operated in a first notification mode, and when the notification mode is set to a second mode, the notification intensity is higher than the first notification mode. notification control means for operating the man-machine interface in a second notification mode;
Driving characteristic acquisition means for acquiring driving main characteristic information and driving main state information of the drivers of the first mobile body and the second mobile body,
The notification mode setting means includes:
The second moving body is a moving body that approaches the support target from the side in the direction of movement of the support target within a second range that includes the first range, and the first movement is recognized by the recognition means. Based on the speed and position of the vehicle and the second moving body, and the driving main characteristic information of the driver of the second moving body acquired by the driving characteristic acquisition means, If there is a possibility of a collision between the first moving body and the second moving body, setting the notification mode to the first mode;
A traffic safety support system characterized in that, when the second moving object exists within the second range and the speed of the second moving object exceeds a predetermined speed, the notification mode is set to the second mode. The traffic safety support system according to claim 1, wherein the notification mode setting means changes the value of the predetermined speed based on weather conditions and road surface conditions in the monitoring area recognized by the recognition means. The notification mode setting means sets the notification timing in the first mode or the second mode based on visibility information indicating a visibility state near the intersection recognized by the recognition means. The traffic safety support system according to item 1 or 2. The notification mode setting means is characterized in that when the notification mode is set to the second mode, the notification intensity is changed depending on the degree of risk between the support target and the second mobile object. The traffic safety support system according to any one of claims 1 to 3. The support target is characterized in that it is equipped with a driving support device that automatically operates at least one of a braking device and a steering device on the condition that there is a moving object that may be contacted within the first range. The traffic safety support system according to any one of claims 1 to 4.

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