JP2019144930A - Dangerous vehicle notification system and dangerous vehicle notification method - Google Patents

Abstract

To provide a dangerous vehicle notification system whose reliability is higher than that of an existing one owing to a simple construction employing a portable communication terminal.SOLUTION: A dangerous vehicle notification system includes: an occupant movement information acquisition unit 101 that acquires movement information on an occupant via a portable communication terminal owned by the occupant of a vehicle; an on-board vehicle determination unit 102 that determines which vehicle the occupant owing the portable communication terminal is on board on the basis of the acquired movement information; a vehicle movement information decision unit 103 that decides movement information on the vehicle on which the occupant rides, on the basis of the movement information on the occupant; a dangerous vehicle determination unit 104 that determines whether the vehicle relating to the decided movement information is a dangerous vehicle on the basis of the decided vehicle movement information; and a notification unit 105 that notifies an occupant of another vehicle, which exists within a predetermined range with the dangerous vehicle as an origin, of existence of the dangerous vehicle.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a caution vehicle notification system and a caution vehicle notification method.

  The vehicle moves on the road in accordance with traffic regulations. For this reason, vehicles such as stopping on parking-prohibited roads, moving in the direction opposite to the direction stipulated by traffic regulations (reverse running), and moving at a higher speed than the speed limit (runaway) are usually on the road. Does not exist. However, if such a vehicle moves on the road due to the driver's intention or negligence, this vehicle causes a serious accident with another vehicle. In view of this, a system for grasping the behavior of the vehicle and notifying the other vehicle when a vehicle (a caution vehicle) that requires the other vehicle as described above is detected has been studied.

  Patent Document 1 describes a system that determines a vehicle behavior by using a mobile phone and determines whether the vehicle needs to be notified to another vehicle. In this system, when it is determined that the vehicle needs to be notified to another vehicle, the presence of the vehicle is notified to other surrounding vehicles.

JP 2013-142978 A (refer to claim 1, paragraph 0055 of Patent Document 1 in particular)

  With the recent spread of mobile phones, it is conceivable that each vehicle occupant possesses a mobile phone. For this reason, when a plurality of occupants are on one vehicle, a plurality of mobile phones exist in one vehicle. In particular, when the vehicle is a bus or the like, the number of mobile phones present in the vehicle may be several tens.

  However, the technique described in Patent Document 1 does not assume that a plurality of mobile phones exist in one vehicle. For this reason, when a plurality of passengers carrying a mobile phone are on one caution vehicle, an erroneous determination is made that there are as many caution vehicles as the number of mobile phones. As a result, the determination accuracy is lowered and the reliability of the notice information notification system is lowered.

  An object of at least one embodiment of the present invention is to provide a caution vehicle notification system and a caution vehicle notification method that have a simple configuration using a mobile communication terminal and have higher reliability than conventional ones.

  (1) A caution vehicle notification system according to an embodiment of the present invention is a caution vehicle notification system for notifying an occupant of another vehicle of the presence of a caution vehicle that requires attention when moving on a road. An occupant movement information acquisition unit for acquiring movement information of the occupant via a mobile communication terminal possessed by the occupant, and a vehicle on which the occupant carrying the mobile communication terminal is boarded based on the acquired movement information A boarding vehicle determination unit for determining whether the vehicle is on the basis of the movement information of the occupant, a vehicle movement information determination unit for determining movement information of the vehicle on which the occupant gets on, and the determined movement of the vehicle Based on the information, the attention vehicle determination unit for determining whether or not the vehicle that has determined the movement information is the attention vehicle, and the other vehicle existing within a predetermined range starting from the attention vehicle To passengers, characterized in that it comprises a notifying unit for notifying the existence of the attention vehicle.

  According to the configuration of (1) above, an occupant carrying a mobile communication terminal such as a mobile phone can determine a vehicle on board and can accurately determine the presence of a caution vehicle. Thereby, it is possible to accurately notify the occupant of another vehicle of the presence of the attention vehicle with a simple configuration.

  (2) In some embodiments, in the configuration of (1), when the boarding vehicle determination unit acquires movement information of a plurality of occupants, the predetermined vehicle conditions are satisfied, The plurality of occupants corresponding to the acquired movement information are determined to be in the same vehicle.

  According to the configuration of (2) above, even if the vehicle has a large number of passengers, such as a bus, it is determined that the vehicle is not a vehicle for that number of people but a single vehicle. Can be performed with high accuracy.

  (3) In some embodiments, in the configuration of (2), the boarding vehicle determination unit includes a plurality of passengers existing within a predetermined range, and a distance between the passengers is equal to or less than a predetermined distance. When the same vehicle condition of at least one of the first same vehicle condition and the second riding vehicle condition in which the relative speed of a plurality of passengers existing within a predetermined range is equal to or lower than the predetermined speed is satisfied, The occupant existing within the predetermined range is determined to be in the same vehicle.

  According to the configuration of (3) above, paying attention to the behavior of occupants existing within a predetermined range, it is determined whether or not the vehicles to be boarded are the same based on the behavior of the occupants (distance between occupants, relative speed) it can. Thereby, it can be determined with a simple index whether or not the vehicle on which the occupant gets is the same.

  (4) In some embodiments, in the configuration of (3), the boarding vehicle determination unit is configured such that when a predetermined time elapses after the same vehicle condition is satisfied, It is characterized in that it is determined that the vehicle is in the same vehicle.

  According to the configuration of (4) above, erroneous recognition can be suppressed even when the same vehicle condition is instantaneously satisfied even though the vehicle is actually on a different vehicle.

  (5) In some embodiments, in any one of the configurations (1) to (4), the caution vehicle determination unit is in the same movement direction as the movement direction of the other vehicle, and the other A first caution condition that is a moving speed that is a predetermined speed or higher than the moving speed of the vehicle, the moving direction that is the same as the moving direction of the other vehicle, and a moving speed that is lower than the predetermined speed than the moving speed of the other vehicle A vehicle that satisfies at least one of the second caution condition, the third caution condition in which the moving speed is 0, and the fourth caution condition in which the moving direction is opposite to the moving direction of the other vehicle. The vehicle is determined to be the caution vehicle.

  According to the configuration of (5) above, there is a runaway vehicle that satisfies the first caution condition, a significantly low speed vehicle that satisfies the second caution condition, a stopped vehicle that satisfies the third caution condition, and a reverse running vehicle that satisfies the fourth caution condition. Can be detected. Thereby, the presence of these caution vehicles can be notified to the occupants of other vehicles, alerting can be promoted, and serious accidents can be suppressed.

  (6) In some embodiments, in the configuration of (5), the caution vehicle determination unit compares the average moving speed of the other vehicle at a predetermined position so that the vehicle to be determined is the caution. It is characterized by determining whether it is a vehicle.

  According to the configuration of (6) above, the attention vehicle is determined in consideration of, for example, the overall speed reduction caused by traffic jams, accidents, and the like by comparing the average speed of the entire other vehicle, not the speed of the other vehicle itself. It is possible to make a determination according to the actual traffic condition.

  (7) In some embodiments, in any one of the above configurations (1) to (6), the caution vehicle determination unit is determined when a predetermined caution vehicle determination start condition is satisfied. The vehicle is configured to start determining whether or not the vehicle is the caution vehicle.

  According to the configuration of (7) above, it is possible to prevent the determination when the caution vehicle determination start condition is not satisfied. Thereby, the frequency | count of determination whether it is a caution vehicle can be reduced, and the calculation load of a caution vehicle notification system can be reduced.

  (8) In some embodiments, in the configuration of (7), the caution vehicle determination unit has a predetermined range of the number of vehicles that move in the same direction at the same time as the caution vehicle determination start condition. Start determination of whether or not the vehicle to be determined is the caution vehicle when there are more than a predetermined number in the vehicle and the moving speeds of the vehicles exceeding the predetermined number are all within a predetermined range It is comprised so that it may do.

  According to the configuration of (8) above, when the number of other vehicles that should be notified of the presence of the caution vehicle is less than the predetermined number, it is possible not to determine whether or not the vehicle is the caution vehicle. Thereby, the frequency | count of determination whether it is a caution vehicle can be reduced, and the calculation load of a caution vehicle notification system can be reduced.

  (9) In some embodiments, in any one of the above configurations (1) to (8), the road is a parking and parking prohibited road.

  According to the configuration of (9) above, on roads where no parked vehicles are assumed, the vehicles are often moving at high speed, and there is a high possibility of serious accidents resulting from the occurrence of caution vehicles. Therefore, in this case, the occurrence of a serious accident can be sufficiently suppressed by notifying the passengers of other vehicles of the presence of the attention vehicle.

  (10) A caution vehicle notification method according to an embodiment of the present invention is a caution vehicle notification method for notifying an occupant of another vehicle of the presence of an caution vehicle that requires attention when traveling on a road, wherein the occupant of the vehicle An occupant movement information acquisition step of acquiring movement information of the occupant via a portable communication terminal possessed, and determining which vehicle the occupant carrying the portable communication terminal is on the basis of the acquired movement information Based on the boarding vehicle determination step, the vehicle movement information determination step for determining the movement information of the vehicle on which the occupant gets on the basis of the movement information of the occupant, and the movement information based on the determined movement information of the vehicle. A caution vehicle determination step for determining whether or not the determined vehicle is the caution vehicle; and for a passenger of the other vehicle existing within a predetermined range starting from the caution vehicle. Characterized in that it comprises a and a notification step of notifying the presence of the care vehicle.

  According to the method of (10) above, an occupant carrying a mobile communication terminal such as a mobile phone can determine a vehicle on board and can accurately determine the presence of a caution vehicle. Thereby, it is possible to accurately notify the occupant of another vehicle of the presence of the attention vehicle with a simple configuration.

  According to at least one embodiment of the present invention, it is possible to provide a caution vehicle notification system and a caution vehicle notification method that have a simple configuration using a mobile communication terminal and have higher reliability than conventional ones.

1 is a system diagram of a caution vehicle notification system according to an embodiment of the present invention. It is a block diagram of the attention vehicle notification system concerning one embodiment of the present invention. It is a figure which shows the movement information recorded on a passenger | crew movement information database. It is a figure which shows the information recorded on map data. It is a figure which shows the information recorded on a vehicle movement information database. (A) is a graph of a part of the information recorded in the vehicle movement information database at a certain time, and (b) is a diagram schematically showing the actual road situation of part F in (a). It is. It is a flowchart which shows the attention vehicle notification method which concerns on one Embodiment of this invention.

  Several embodiments of the present invention will be described below with reference to the accompanying drawings. However, the dimensions, materials, shapes, and relative arrangements of the components described in these embodiments or shown in the drawings are not intended to limit the scope of the present invention, but are merely illustrative examples. Only.

  FIG. 1 is a system diagram of an attention vehicle notification system 500 according to an embodiment of the present invention. Although the details of the caution vehicle notification system 500 will be described later with reference to FIG. 2 and the like, the presence of the caution vehicle 302 (see FIG. 6, included in the vehicle 300) that requires attention when moving on the road is indicated by another vehicle 303 ( This is for notifying the passenger of FIG. 6 (included in the vehicle 300). Notification to the occupant is made via a mobile communication terminal 301 (such as a mobile phone or a smartphone) possessed by an occupant (not shown) of the vehicle 300.

  Caution In the vehicle notification system 500, the data center 100 and the mobile communication terminal 301 are connected via the base station 200 and the network 400. For this reason, the data center 100 can acquire movement information of the passenger using the mobile communication terminal 301 possessed by the passenger. Although details will be described later, the data center 100 (more specifically, the attention vehicle notification device 150) grasps the movement information of the vehicle 300 on which the occupant gets on the basis of the acquired movement information of the occupant. ing. Further, the data center 100 can notify the occupant carrying the mobile communication terminal 301 of the presence of the attention vehicle 302 via the base station 200 and the network 400.

  FIG. 2 is a block diagram of the attention vehicle notification device 150 provided in the attention vehicle notification system 500 according to an embodiment of the present invention. Caution vehicle notification device 150 is installed in data center 100 shown in FIG. The caution vehicle notification device 150 includes an occupant movement information acquisition unit 101, a boarding vehicle determination unit 102, a vehicle movement information determination unit 103, a caution vehicle determination unit 104, and a notification unit 105. The caution vehicle notification device 150 includes these, so that an occupant carrying the mobile communication terminal 301 can determine the vehicle 300 being on board and accurately determine the presence of the caution vehicle 302. Thereby, it is possible to accurately notify the occupant of the other vehicle 303 of the presence of the attention vehicle 302 with a simple configuration.

  The attention vehicle notification device 150 includes an occupant movement information database 106 and a vehicle movement information database 107 in addition to the above-described units.

  The occupant movement information acquisition unit 101 is for acquiring occupant movement information via the mobile communication terminal 301 (see FIG. 1) possessed by the occupant of the vehicle 300 (see FIG. 1). The occupant movement information here is, for example, the occupant movement direction, the occupant movement speed, the occupant position (coordinates), the occupant height (above sea level), and the like. The acquisition of movement information by the mobile communication terminal 301 is performed by a movement information acquisition sensor such as a GPS (Global Positioning System), an acceleration sensor, or an angular velocity sensor provided in the mobile communication terminal 301, for example. The occupant movement information is acquired for each occupant at predetermined time intervals (for example, every minute) in response to a request from the occupant movement information acquisition unit 101 to the mobile communication terminal 301.

  However, in a very narrow predetermined range (for example, within 1 m), there is a possibility that an occupant moving in a direction opposite to the moving direction with the occupant existing in the surrounding area may be detected. This is considered to be caused by, for example, a situation in which the vehicle 300 is, for example, a bus, and an occupant is moving from the front toward the rear in a passage in the bus. However, since the types of the vehicle 300 in which the occupant can move are limited, and the state in which the occupant moves through the passage inside the vehicle 300 does not always occur, such detection is extremely difficult. It is thought that there are few.

  Therefore, for example, in the above-mentioned very narrow predetermined range, the average of the moving direction (for example, the angle of the moving direction with the north direction being 0 °) is determined, and the direction completely different from the average (for example, the determined angle) The movement information of the occupant moving at an angle of 180 ° may not be used in the following control. By doing in this way, the accuracy of movement information can be raised more.

  In addition, for example, in the above-mentioned very narrow predetermined range, a majority of the movement directions of each occupant is used as a reference, and a direction completely different from the reference movement direction (for example, with respect to the reference movement direction) The movement information of the occupant moving in the opposite direction) can be prevented from being used in the following control. Also by doing this, the accuracy of the movement information can be further improved.

  The acquired movement information is recorded in the occupant movement information database 106 for each occupant. In particular, the occupant movement information acquisition unit 101 records movement information about the occupant moving on the parking and prohibition road in the occupant movement information database 106. For example, on roads where parking is prohibited such as expressways and toll roads (roads where no parked vehicles are assumed), vehicles are often moving at high speeds, and there is a possibility of serious accidents resulting from the occurrence of warning vehicles 302. large. Therefore, in this case, the occurrence of a serious accident can be sufficiently suppressed by notifying the occupant of the other vehicle 303 of the presence of the attention vehicle 302.

  The determination as to whether the occupant is moving on a parking-prohibited road is performed as follows. That is, the occupant movement information acquisition unit 101 can make a determination based on, for example, the movement speed among the movement information acquired as described above. Specifically, for example, it is possible to determine that an occupant having a moving speed of 60 km / h to 140 km / h is an occupant moving on a parking and parking prohibited road. Here, in many cases, parking and stopping of the vehicle 300 is prohibited on a road (a highway, a toll road, etc.) on which the vehicle 300 can move at high speed. For this reason, by determining based on the moving speed, it can be determined whether or not the vehicle 300 (and its occupant) is moving on a parking stop road.

  Further, for example, the occupant movement information acquisition unit 101 refers to, for example, the position and altitude of the movement information acquired as described above, and prohibits parking and stopping in comparison with map data that records information on parking and parking prohibited roads. It can be determined whether or not the road is moving. As the map data, map data (not shown) provided in the attention vehicle notification device 150 can be used. In addition, when a car navigation system (not shown) is mounted on the vehicle 300, map data included in the car navigation system can be used. In this case, the car navigation system and the mobile communication terminal 301 are connected by wire or wirelessly.

  As a result of the comparison, when the road on which the occupant is moving is a parking and parking prohibited road, the acquired movement information is recorded in the occupant movement information database 106. On the other hand, if the road on which the occupant is moving is not a parking and parking prohibited road, the acquired movement information is not recorded in the occupant movement information database 106.

  FIG. 3 is a diagram showing movement information recorded in the occupant movement information database 106. The acquired movement information is recorded in the occupant movement information database 106 in association with the occupant ID assigned to each occupant (for each portable communication terminal 301). In the occupant movement information database 106 shown in FIG. 3, as an example of recorded movement information, the occupant movement direction, the occupant movement speed, the occupant position (coordinates), and the occupant height (above sea level) are used as the occupant ID. It is linked and recorded.

For example, as shown in FIG. 3, the occupant with the occupant ID 001 is moving in the north direction at a speed of 85 km / h. The occupant with the occupant ID 001 is located at a latitude of 34 ° 58 minutes 12.36 seconds N, 137 ° 3 minutes 45.79 seconds east, and 25 m high (altitude above sea level).
Further, for example, the passenger with the passenger ID 006 is moving in the south direction at a speed of 50 km / h. The occupant with occupant ID 006 is located at a latitude of 34 ° 56'50.40 seconds north, 137 ° 3'45.79 seconds east, and 25 m high (above sea level). Although details will be described later, the occupant with the occupant ID 006 is an occupant who rides on the vehicle 300 (that is, the attention vehicle 302) that runs backward on the road.

Further, for example, the occupant with the occupant ID 007 is moving in the north direction at a speed of 0 km / h. That is, the occupant with the occupant ID 007 stops in the north direction. The occupant with the occupant ID 007 is located at a latitude of 34 ° 59 minutes, 40.40 seconds north, 137 ° 3 minutes 45.79 seconds east, and 25 m high (altitude above sea level). Although details will be described later, the occupant with the occupant ID 007 is an occupant who gets on the vehicle 300 stopped on the road (that is, the attention vehicle 302).
And these information is similarly recorded about the passenger | crew of other passenger | crew ID.

  Movement information is recorded in the occupant movement information database 106 at each acquisition time (10:10 am in the example shown in FIG. 3). Therefore, the acquisition time and the time when the occupant is actually moving do not exactly match due to the time lag associated with wireless communication. However, since these times are generally the same, in the embodiment of the present invention, the following control is performed on the assumption that the acquisition time is the actual movement time.

  In addition, for example, as a result of the vehicle 300 being unable to connect to the network 400 due to entering a tunnel, a mountainous area, or the like, movement information of the occupant may not be acquired. In this case, movement information of the occupant ID at the acquisition time is not recorded, and acquisition of movement information at the next acquisition time is attempted.

  Returning to FIG. 2, the boarding vehicle determination unit 102 is for determining which vehicle an occupant carrying the mobile communication terminal 301 is on the basis of the acquired movement information. The acquired movement information here is acquired by the occupant movement information acquisition unit 101 and recorded in the occupant movement information database 106.

  Here, the movement information of the occupant and the movement information of the vehicle 300 do not always match. For example, when a plurality of people are on the same vehicle 300 and moving (therefore, there are a plurality of mobile communication terminals 301), based on only the movement information of the mobile communication terminal 301, the vehicle 300 that is moving It is erroneously determined that the vehicle is moving by the number of passengers. Therefore, in the attention vehicle notification system 500, the boarding vehicle determination unit 102 determines the vehicle 300 on which the occupant gets on the basis of the movement information of the occupant. That is, based on the acquired movement information of the occupant, it is determined whether or not the occupant carrying the mobile communication terminal 301 that acquired the movement information is on the same vehicle. Thereby, it can be determined whether the vehicle 300 is a vehicle requiring attention.

  Specifically, when the traveling vehicle determination unit 102 acquires movement information of a plurality of occupants, the plurality of occupants corresponding to the acquired movement information satisfy the same vehicle condition when the same vehicle conditions are set in advance. It is determined that you are on board. In this way, even if the vehicle 300, such as a bus, where a large number of people are on board is used, it is determined that the vehicle 300 is not the same number of vehicles 300 as the one vehicle 300. The determination can be performed with high accuracy.

  As said same vehicle conditions, the following 1st same vehicle conditions and the 2nd boarding vehicle conditions are mentioned, for example. In addition, although mentioned later for details, in one Embodiment of this invention, when the same vehicle condition is satisfy | filled for predetermined time, it determines with the several passenger | crew getting on the same vehicle 300. FIG.

First identical vehicle condition: A plurality of passengers (for example, 2 to 50 persons) existing within a predetermined range (for example, within 20 m), and the distance between the passengers is a predetermined distance or less (for example, 1 m or less).
Second identical vehicle condition: The relative speed of a plurality of passengers existing within a predetermined range (for example, within 20 m) is equal to or lower than a predetermined speed (for example, 5 km / h or lower).

  Then, when at least one of the same vehicle conditions is satisfied, the boarding vehicle determination unit 102 determines that an occupant existing within the predetermined range is on the same vehicle 300. It is supposed to be. However, from the viewpoint of making a more accurate determination, it is preferable to determine that the vehicle is on the same vehicle 300 when both the first identical vehicle condition and the second identical vehicle condition are satisfied.

  By performing the above determination based on the satisfaction of the same vehicle condition, the vehicle 300 that gets on the basis of the behavior of the occupants (distance between the occupants, relative speed) pays attention to the behavior of the occupants existing within a predetermined range. Whether or not they are the same can be determined. Thereby, it can be determined with a simple index whether or not the vehicle 300 on which the occupant gets is the same.

  In addition, the boarding vehicle determination unit 102 determines that an occupant existing within a predetermined range is in the same vehicle when a predetermined time has elapsed (for example, 1 minute) when the same vehicle condition is satisfied. It has become. By doing so, it is possible to suppress erroneous determination even when the same vehicle condition is instantaneously satisfied even though the vehicle 300 is actually boarded.

  For example, when another vehicle 300 overtakes a certain vehicle 300, if the vehicle 300 to be overtaken and the vehicle 300 to be overtaken approach each other, the distance between these occupants approaches. As a result, the first identical vehicle condition is satisfied. Further, for example, when two vehicles 300 are running side by side, the relative speeds may instantaneously be the same (that is, the speeds of the two vehicles 300 are the same). As a result, the second identical vehicle condition is satisfied. However, the determination of boarding the same vehicle based on these satisfactions is different from the actual situation, and an erroneous determination occurs. Thus, as described above, such a determination can be avoided by setting the determination condition that a predetermined time elapses when the same vehicle condition is satisfied.

  However, it may be determined that a plurality of passengers are on the same vehicle 300 without waiting for the predetermined time. That is, a state in which a plurality of occupants are in the same vehicle 300 continues while the vehicle 300 is moving, but the traffic situation changes from moment to moment. It only occurs. Therefore, even if such a state that occurs instantaneously is ignored, it is considered that the determination accuracy is not greatly affected. Therefore, when the same vehicle condition is satisfied, it may be determined that a plurality of passengers are on the same vehicle 300 without waiting for the predetermined time.

  As described above, acquisition of movement information is performed every predetermined time. Therefore, as a result of acquiring the movement information, it is possible to determine that a plurality of passengers are on the same vehicle 300 when the same vehicle condition is satisfied twice in succession.

  The vehicle movement information determination unit 103 is for determining movement information of the vehicle 300 on which the occupant gets on the basis of the occupant movement information. The determined movement information is recorded in the vehicle movement information database 107 in association with the vehicle ID assigned to each vehicle 300.

  Said boarding vehicle determination part 102 determines with the passenger | crew who satisfy | filled said same vehicle conditions boarding the same vehicle 300. FIG. Therefore, the movement information of the passengers who satisfy the same vehicle condition can be considered as the movement information of the vehicle 300 on which those passengers get on. Therefore, the vehicle movement information determination unit 103 determines, for example, the movement information of the head occupant in the traveling direction as the movement information of the vehicle 300 among the occupants on the same vehicle 300. Specifically, for example, in the case of the vehicle 30 facing north, the movement information of the occupant in the northernmost position among the occupants riding in the vehicle 300 is the movement information of the vehicle 300 in which the occupant is riding. It is determined. The movement information adopted here is used as the movement information of the vehicle 300 in the following control.

  When the vehicle 300 is a stopped vehicle, the moving direction of the vehicle 300 (that is, the direction in which the vehicle 300 faces) is the same as the moving direction of the other vehicle 303 in the same lane of the road where the vehicle 300 exists. Can be determined. However, when the vehicle 300 is a stopped vehicle, it is only necessary to notify the other vehicle 303 of the presence of the vehicle 300 (attention vehicle 302). Therefore, the moving direction of the stopped vehicle 300 (the direction in which the vehicle 300 faces) is It may not be determined.

  FIG. 4 is a diagram showing information recorded in the vehicle movement information database 107. In the vehicle movement information database 107, movement information is recorded for each vehicle 300 as described above. Further, the vehicle movement information database 107 is updated every time when the movement information is determined by the vehicle movement information determination unit 103.

  Here, as a result of the determination by the boarding vehicle determination unit 102, it is determined that only the occupant with the occupant ID001 described with reference to FIG. 3 is on the vehicle 300 with the vehicle ID001. Therefore, the movement information of the occupant with the occupant ID001 is recorded in the vehicle movement information database 107 as the movement information of the vehicle 300 with the vehicle ID001. Specifically, the vehicle 300 with the vehicle ID 001 is moving in the north direction at a speed of 85 km / h. In addition, the vehicle 300 with the vehicle ID 001 is recorded as being at a position of north latitude 34 ° 58 minutes 12.36 seconds, east longitude 137 ° 3 minutes 45.79 seconds, and height (altitude) 25 m.

  For example, the vehicle 300 with the vehicle ID 002 is moving in the north direction at a speed of 80 km / h. Further, the vehicle 300 with the vehicle ID 001 is located at a latitude of 34 ° 58 minutes 10.10 seconds north latitude, 137 ° 3 minutes 45.79 seconds east longitude, and 25 m above sea level.

  Here, it is assumed that the boarding vehicle determination unit 102 determines that the passengers with the passenger IDs 002 to 004 described with reference to FIG. 3 are on the vehicle 300 with the vehicle ID002. Specifically, these occupants are a plurality (three in this case) of occupants existing within a predetermined range (for example, 20 meters or less) in the second same vehicle condition, and their relative speeds are within a predetermined speed range. (5 km / h or less). Therefore, the boarding vehicle determination unit 102 determines that the second same vehicle condition is satisfied, and determines that these occupants are on the same vehicle. As a result, the boarding vehicle determination unit 102 employs the movement information of the most occupant 002 as the movement information of the vehicle 300 based on the movement direction of the vehicle 300.

  These pieces of information are similarly recorded in the vehicle movement information database 107 for the vehicles 300 with other vehicle IDs.

  Returning to FIG. 2, the attention vehicle determination unit 104 determines whether or not the vehicle 300 that has determined the movement information is the attention vehicle 302 based on the determined movement information of the vehicle 300. Specifically, the attention vehicle determination unit 104 can determine, for example, a vehicle 300 that satisfies any one of the following attention conditions as a attention vehicle.

First caution condition: the moving direction is the same as the moving direction of the other vehicle 303 (see FIG. 6), and the moving speed is a predetermined speed (for example, 30 km / h) or more than the moving speed of the other vehicle 303.
Second caution condition: the moving direction is the same as the moving direction of the other vehicle 303, and the moving speed is a predetermined speed (for example, 40 km / h) or less than the moving speed of the other vehicle 303.
Third caution condition: The moving speed is 0 km / h.
Fourth caution condition: a moving direction opposite to the moving direction of the other vehicle 303.

  Of these caution conditions, the first caution condition is assumed to be, for example, a runaway vehicle, the second caution condition is assumed to be, for example, a significantly low speed vehicle, the third caution condition is assumed to be, for example, a stopped vehicle, and the fourth caution condition is assumed to be, for example, a reverse running vehicle. is there. Therefore, by determining the caution vehicle 302 based on the above caution conditions, a runaway vehicle that satisfies the first caution condition, a significantly low speed vehicle that satisfies the second caution condition, a stopped vehicle that satisfies the third caution condition, It is possible to detect the presence of a reverse running vehicle that satisfies the caution conditions. As a result, the presence of these caution vehicles 302 can be notified to the occupants of other vehicles 303, and a serious accident can be suppressed by prompting attention.

  The determination as to whether or not the vehicle is a caution vehicle is made by comparing the moving speed of the vehicle 300 to be determined at a predetermined position and a predetermined time on a parking and parking prohibited road with the average moving speed of the other vehicle 303 (see FIG. 6). Is done. Here, the predetermined position can be, for example, each position with an interval of 100 m. Also, the predetermined time here can be, for example, the time when the movement information of the vehicle 300 is determined (the determined time in FIG. 4 above). Thus, by comparing not the speed of the other vehicle 303 itself but the average moving speed of the other vehicle 303, for example, it is possible to determine a caution vehicle in consideration of a speed decrease due to traffic jams, accidents, etc. Determination according to a state can be performed.

  When the average moving speed is sufficiently slow (for example, 20 km / h, specifically, for example, in a traffic jam), it is considered that the passenger of the vehicle 300 can find the caution vehicle 302 by himself and avoid a serious accident. . Therefore, in this case, from the viewpoint of reducing the calculation load of the attention vehicle notification device 150, the following control can be prevented from being performed.

  In addition, the caution vehicle determination unit 104 starts determining whether or not the vehicle 300 to be determined is the caution vehicle 302 when a predetermined caution vehicle determination start condition is satisfied. That is, the caution vehicle determination unit 104 determines the caution vehicle 302 using a caution vehicle determination start condition as a trigger. By doing so, it is possible to prevent the determination when the caution vehicle determination start condition is not satisfied. Thereby, the frequency | count of determination whether it is the caution vehicle 302 can be reduced, and the calculation load of the caution vehicle notification system 500 can be reduced.

As the caution vehicle determination start condition, the number of vehicles 300 that move in the same direction at the same time is within a predetermined range within a predetermined range, and the moving speed of the predetermined number of vehicles is within the predetermined range. This is the case. Specifically, for example, there are three or more vehicles 300 moving in the same direction at the same time within a radius of 5 km, and three or more vehicles 3
In this case, the moving speed of 00 is 60 km / h to 140 km / h. Among these requirements, a road speed requirement is included, so that a road on which the vehicle 300 can move at high speed can be detected. In many cases, parking and stopping of the vehicle 300 is prohibited on roads (highways, toll roads, etc.) on which the vehicle 300 can move at high speed as described above. For this reason, it is possible to determine whether or not the vehicle is moving on a parking and prohibition road by including the requirement for the moving speed.

  By starting the determination when the caution vehicle determination start condition is satisfied, if the number of other vehicles 303 to be notified of the presence of the caution vehicle 302 is less than a predetermined number, it is determined whether or not the vehicle is the caution vehicle 302. Can not be. Thereby, the frequency | count of determination whether it is the caution vehicle 302 can be reduced, and the calculation load of the caution vehicle notification system 500 can be reduced.

  In addition, in the caution vehicle determination start condition described above, instead of the requirement that “the moving speeds of three or more vehicles 300 are all 60 km / h to 140 km / h”, “based on the above map data The requirement that the vehicle 300 to be moved on a parking and parking prohibited road may be used. That is, the caution vehicle determination unit 104 has a predetermined number of vehicles 300 that move in the same direction at the same time within a predetermined range, and the vehicle 300 to be determined moves on a parking stop prohibited road. If it is determined based on the map data, the above determination may be started.

  FIG. 5 is a diagram illustrating information recorded in map data that can be accommodated in the attention vehicle notification device 150. The map data shown in FIG. 4 has information on the position (coordinates) of the parking and parking prohibited road and its altitude. Therefore, the location of the parking prohibited road is identified using these information, and the vehicle 300 moves on the parking prohibited road by comparing the specified parking prohibited road location with the location of the vehicle 300. It can be determined whether or not. In particular, by making a determination based on data related to parking and parking prohibited roads, it is possible to accurately determine even roads on which temporary speed regulation is performed.

  FIG. 6A is a graph of a part of information recorded in the vehicle movement information database 107 at a certain time, and FIG. 6B shows an actual road condition of the F part in FIG. It is a figure. FIG. 6A is a plot of the moving direction, moving speed, and position for each vehicle 300 in the vehicle movement information database 107 (see FIG. 4) (however, the vehicle 300 moving on the same road). Limited to). In FIG. 6A, the number of plots is partially omitted for convenience of illustration.

  The vertical axis in FIG. 6A is the speed per hour, the + direction is the speed in the direction of travel of the road on which the vehicle 300 moves (in this example, the north direction), and the − direction is the direction of travel of the road on which the vehicle 300 moves. It represents the speed in the opposite direction (south direction in this example). 6A represents the position of the vehicle 300. The horizontal axis of FIG. However, this position is determined based on the position of the two components represented by the north latitude and the east longitude, and is expressed as a distance (one component) from the starting point of the parking and parking prohibited road. Furthermore, in FIG. 6A, the broken line represents the average moving speed of the vehicle 300 at that position.

  In FIG. 6A, in the part A, since the vehicle 300 is moving smoothly, the average moving speed is fast. However, in part B, the average movement speed starts to decrease due to the traffic jam in part C, and the average movement speed in part C where the traffic jam occurs is slow. However, as a result of the movement speed of the vehicle 300 starting to recover in part D where no traffic jam occurs, the average movement speed also recovers, and in part F, the average movement speed is increased again.

  Among these, in section E, a vehicle 300 (stopped vehicle) with a moving speed of 0 km / h and a vehicle 300 (reversely driven vehicle) with a moving speed of, for example, −80 km / h are detected. Since these vehicles 300 satisfy the above caution conditions (specifically, the third caution condition and the fourth caution condition, respectively), these vehicles 300 correspond to the caution vehicle 302. FIG. 6B is a diagram showing an actual road situation including the attention vehicle 302 in the portion E.

  As shown in FIG. 6B, on an actual road, a vehicle 300 (for example, a bus) or the like on which a plurality of people ride is moving in addition to a vehicle 300 having only one passenger. However, by determining the vehicle 300 on which the occupant is to be boarded by the above-described boarding vehicle determination unit 102, one vehicle is used for each vehicle, regardless of whether the vehicle 300 has only one occupant or a vehicle 300 on which a plurality of people have boarded. The vehicle 300 can be determined.

  In FIG. 6B, two occupants are in the vehicle 300 that stops on the road. However, by determining that the vehicle 300 is one vehicle 300 by the boarding vehicle determination unit 102, it is erroneously determined that there are two caution vehicles 302 even though only one vehicle is actually present. You can avoid that. Thereby, the determination accuracy of the attention vehicle 302 can be increased.

  Returning to FIG. 2, the notification unit 105 notifies the occupant of the other vehicle 303 existing in a predetermined range (for example, within 5 km before and after, that is, around 10 km) starting from the attention vehicle 302 of the presence of the attention vehicle 302. Is for. Notification is performed via the portable communication terminal 301 possessed by the passenger. Specifically, for example, the notification can be performed by generating a warning sound from the mobile communication terminal 301 or displaying a warning screen on a screen (not shown) of the mobile communication terminal 301. When a warning screen is displayed on the screen of the mobile communication terminal 301, for example, a pattern indicating the behavior of the attention vehicle 302 as shown in FIG. 6B may be displayed.

  Note that the caution vehicle notification device 150 is not shown, but a CPU (Central Processing Unit), a RAM (Random Access Memory), a ROM (Read Only Memory), a HDD (Hard Disk Drive), an I / F (InterFace), A control circuit or the like is provided, and a predetermined control program stored in the ROM is executed by the CPU.

  According to the caution vehicle notification system 500 including the above-described units, an occupant having the mobile communication terminal 301 such as a mobile phone can determine the vehicle 300 being on board and can accurately determine the presence of the caution vehicle 302. Thereby, the presence of the attention vehicle 302 can be notified to the passenger of the other vehicle 303 with high accuracy.

  FIG. 7 is a flowchart illustrating a notice vehicle notification method according to an embodiment of the present invention. The caution vehicle notification method according to an embodiment of the present invention is a method of notifying an occupant of another vehicle 303 of the presence of a caution vehicle 302 that requires attention when moving on a road. The method can be executed by the attention vehicle notification device 150 (see FIG. 2). Therefore, FIG. 7 will be described with reference to FIG. 2 as appropriate.

  First, the occupant movement information acquisition unit 101 acquires user movement information via the mobile communication terminal 301 possessed by the user (step S1, occupant movement information acquisition step). The movement information here is the movement direction, movement speed, position, and altitude of the user. Note that at this point in time, it is unknown whether the user who acquired the movement information is in the vehicle 300 (that is, whether the user is a passenger). Therefore, the occupant movement information acquisition unit 101 determines whether or not the user is on the vehicle 300 based on the acquired moving speed, for example (step S2). If the result of determination is that the user has not boarded the vehicle 300 (No direction), the flow ends. On the other hand, if the user is in the vehicle 300 (Yes direction), the user who has acquired the movement information is determined as an occupant (step S3).

  Next, the occupant movement information acquisition unit 101 determines whether or not the occupant is moving on a parking and parking prohibited road (step S4). This determination can be made based on, for example, the moving speed of the vehicle 300 described in the attention vehicle determination start condition. This determination can also be made based on, for example, map data mounted on a car navigation system mounted on the vehicle 300, map data provided on the attention vehicle notification device 150, and the like as described above. As a result of the determination, if the occupant is not moving on the parking and prohibition road (No direction), the flow ends.

  On the other hand, if the occupant is moving on a parking prohibited road (Yes direction), the occupant movement information acquisition unit 101 determines whether the caution vehicle determination start condition is satisfied, specifically, for example, the movement information. It is determined whether there are three or more other occupants within 5 km around the acquired occupant (step S5). As a result of this determination, if there are no three or more other passengers (No direction), the flow ends. On the other hand, if there are three or more other occupants (Yes direction), the occupant movement information acquisition unit 101 records the occupant movement information in the occupant movement information database 106, and the determination of the attention vehicle 302 starts. Is done.

  Next, the boarding vehicle determination unit 102 uses a specific occupant who is an arbitrary occupant and another occupant based on the movement information (acquired movement information) recorded in the occupant movement information database 106. It is determined whether or not a certain other passenger satisfies the same vehicle condition (step S6, vehicle movement information determination step). As a result, it is determined which vehicle 300 the occupant carrying the mobile communication terminal 301 is on. It should be noted that step S6 is repeated a plurality of times as necessary to determine whether or not the same vehicle condition is satisfied for each other passenger.

  As a result of the determination, if the same vehicle condition is satisfied (Yes direction), the boarding vehicle determination unit 102 determines that the specific occupant and the other occupant are in the same vehicle 300 (step 8). As a result, the vehicle movement information determination unit 103 uses the movement information of the occupant who is on the top of the occupants (specific occupants and other occupants) who are in the same vehicle 300 as the movement information of the vehicle 300. Determine (step S10). The determined movement information of the vehicle 300 is recorded in the vehicle movement information database 107 by the vehicle movement information determination unit 103 (step S11).

  On the other hand, if the same vehicle condition is not satisfied (No direction), the boarding vehicle determination unit 102 determines that the specific occupant and another occupant are in a different vehicle 300 (step 9). Thereby, the vehicle movement information determination unit 103 determines the movement information of each occupant as the movement information of each vehicle 300 on which each occupant gets on (step S10). The determined movement information of the vehicle 300 is recorded in the vehicle movement information database 107 by the vehicle movement information determination unit 103 (step S11).

  Then, the attention vehicle determination unit 104 determines the average moving speed of the vehicle 300 at a predetermined position on the road (step S12). The caution vehicle determination unit 104 determines whether there is a vehicle 300 that satisfies the above caution condition based on the determined average moving speed (step S13, caution vehicle determination step). Thereby, based on the determined movement information of the vehicle 300 (including the determined average moving speed), it is determined whether or not the vehicle 300 that has determined the movement information is the attention vehicle 302. As a result of the determination, if there is no vehicle 300 that satisfies the caution condition (No direction), the flow ends.

  On the other hand, if there is a vehicle 300 that satisfies the above-mentioned caution condition (Yes direction), the notification unit 105 notifies the occupant of the vehicle 300 that exists within 10 km around the caution vehicle as the starting point of the presence of the caution vehicle 302. (Step S14, notification step). Notification is performed via the portable communication terminal 301 possessed by the passenger. Thereby, alerting to the other vehicle 303 moving around the attention vehicle 302 is performed, and a serious accident can be suppressed.

  The other vehicle 303 to be notified may be changed according to the type of the attention vehicle 302. For example, when the attention vehicle 302 is a runaway vehicle, it is possible to notify only the other vehicle 303 moving in front of the attention vehicle 302. Further, for example, when the caution vehicle 302 is a vehicle that is extremely low in speed, it is possible to notify only the other vehicle 303 that moves behind the caution vehicle 302.

  Further, for example, when the caution vehicle 302 is a stopped vehicle, the other vehicle 303 that moves behind the caution vehicle 302 on the road where the caution vehicle 302 exists is based on the moving direction of the other vehicle 303 that moves on the road. Can only be notified. Further, for example, when the caution vehicle 302 is running backward, it is possible to notify only the other vehicle 302 moving in the forward direction of the caution vehicle 302. In this case, if the moving direction of the other vehicle 303 is used as a reference, the other vehicle 303 moving behind the attention vehicle 302 is notified.

  According to the method as described above, an occupant carrying a mobile communication terminal 301 such as a mobile phone can determine the vehicle 300 being on board and can accurately determine the presence of the attention vehicle 302. Thereby, it is possible to accurately notify the occupant of the other vehicle 303 of the presence of the attention vehicle 302 with a simple configuration.

DESCRIPTION OF SYMBOLS 100 Data center 101 Passenger movement information acquisition part 102 Boarded vehicle determination part 103 Vehicle movement information determination part 104 Caution vehicle determination part 105 Notification part 106 Passenger movement information database 107 Vehicle movement information database 150 Caution vehicle notification apparatus 200 Base station 301 Portable communication terminal 302 Attention vehicle 303 Other vehicle 400 Network 500 Attention vehicle notification system

Claims (10)

A caution vehicle notification system for notifying occupants of other vehicles of the presence of caution vehicles that require attention when traveling on a road,
An occupant movement information acquisition unit for acquiring movement information of the occupant via a portable communication terminal possessed by an occupant of the vehicle;
A boarding vehicle determination unit for determining which vehicle an occupant carrying the mobile communication terminal is boarding based on the acquired movement information;
Based on the movement information of the occupant, a vehicle movement information determination unit for determining movement information of the vehicle on which the occupant gets on,
Based on the determined movement information of the vehicle, a caution vehicle determination unit for determining whether or not the vehicle that has determined the movement information is the caution vehicle;
A caution vehicle notification system, comprising: a notification unit for notifying an occupant of the other vehicle existing within a predetermined range starting from the caution vehicle, the presence of the caution vehicle. The boarding vehicle determination unit obtains movement information of a plurality of occupants, and the plurality of occupants corresponding to the acquired movement information get on the same vehicle when satisfying the same predetermined vehicle condition. The caution vehicle notification system according to claim 1, wherein the caution vehicle notification system is configured to determine that the vehicle is in a state of being. The boarding vehicle determination unit
A first identical vehicle condition in which there are a plurality of occupants existing within a predetermined range, and a distance between the occupants is a predetermined distance or less; and
A second riding vehicle condition in which the relative speed of a plurality of passengers existing within a predetermined range is equal to or lower than a predetermined speed;
The occupant existing in the predetermined range is determined to be in the same vehicle when at least one of the same vehicle conditions is satisfied. Caution vehicle notification system described in. The boarding vehicle determination unit is configured to determine that an occupant existing in the predetermined range is on the same vehicle when a state satisfying the same vehicle condition has elapsed for a predetermined time. The notice vehicle notification system according to claim 3. The attention vehicle determination unit
A first caution condition that is a movement direction that is the same as the movement direction of the other vehicle and that is a moving speed that is equal to or higher than a moving speed of the other vehicle;
A second caution condition that is a movement direction that is the same as the movement direction of the other vehicle and that is a movement speed that is a predetermined speed or less than the movement speed of the other vehicle;
A third caution condition in which the moving speed is 0, and
A fourth caution condition that is a movement direction opposite to the movement direction of the other vehicle;
The caution vehicle notification system according to any one of claims 1 to 4, wherein a vehicle that satisfies at least one of the caution conditions is determined as the caution vehicle. The caution vehicle determination unit is configured to determine whether or not the vehicle to be determined is the caution vehicle by comparing with an average moving speed of the other vehicle at a predetermined position. The notice vehicle notification system according to claim 5. The caution vehicle determination unit is configured to start determining whether or not the vehicle to be determined is the caution vehicle when a predetermined caution vehicle determination start condition is satisfied. The caution vehicle notification system according to any one of claims 1 to 6. The caution vehicle determination unit has, as the caution vehicle determination start condition, a predetermined number or more of the vehicles that move in the same direction at the same time in a predetermined range, and more than the predetermined number of the vehicles. The configuration according to claim 7, wherein the determination is made as to whether or not the vehicle to be determined is the caution vehicle when both moving speeds are within a predetermined range. Attention vehicle notification system. The caution vehicle notification system according to any one of claims 1 to 8, wherein the road is a parking and parking prohibited road. A caution vehicle notification method for notifying passengers of other vehicles of the presence of caution vehicles that require attention when traveling on the road,
An occupant movement information acquisition step of acquiring movement information of the occupant via a portable communication terminal possessed by an occupant of the vehicle;
A boarding vehicle determination step for determining which vehicle an occupant carrying the mobile communication terminal is boarding based on the acquired movement information;
Vehicle movement information determination step for determining movement information of the vehicle on which the occupant gets on the basis of the movement information of the occupant;
Based on the determined movement information of the vehicle, a caution vehicle determination step of determining whether or not the vehicle that has determined the movement information is the caution vehicle;
A notification step of notifying an occupant of the other vehicle existing in a predetermined range starting from the caution vehicle of the presence of the caution vehicle.

Images