JP2019040322A - Control device, control method and program - Google Patents

Abstract

[Problem] Output of traffic event information is controlled depending on where a moving body such as a vehicle is heading. [Solution] A control device comprising: an acquisition unit that acquires traffic event information including position information of a place where a traffic event has occurred and movement information of a first moving body; a determination unit that determines whether the first moving body is heading to the place where the traffic event has occurred based on the movement information and the traffic event information; and an output control unit that controls output of the traffic event information depending on the result of the determination by the determination unit. [Selected Figure] Figure 2

Description

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

  Recently, inter-vehicle communication for communicating information between in-vehicle terminals mounted on a vehicle has attracted attention. According to the inter-vehicle communication, each vehicle can acquire the traffic event information without depending on infrastructure such as a roadside machine. For example, Patent Document 1 discloses a technique for relaying traffic event information indicating the occurrence of a traffic accident like a bucket relay by inter-vehicle communication. Specifically, in the technique described in Patent Document 1, direction information is set in the traffic event information, and a vehicle located in the direction indicated by the direction information as viewed from the location of the traffic accident relays the traffic event information. Thereby, since the vehicle which relays traffic event information is restrict | limited, the communication traffic resulting from the relay of traffic event information is suppressed.

JP 2009-217593 A

  The traffic event information described above is useful for the user of the vehicle heading to the place where the traffic event has occurred. On the other hand, the usefulness of the traffic event information is low for the user of the vehicle moving away from the place where the traffic event occurred. However, in the technique described in Patent Document 1, traffic event information is output regardless of where each vehicle is heading. For this reason, sufficient traffic event information is not output for vehicles heading to the place where the traffic event occurred, or unnecessary traffic event information is output for vehicles moving away from the place where the traffic event occurred. There is a problem.

  Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to control the output of traffic event information according to which location a moving body such as a vehicle is heading. It is an object of the present invention to provide a new and improved control device, control method, and program that can be performed.

  In order to solve the above problems, according to an aspect of the present invention, an acquisition unit that acquires traffic event information including location information of a place where a traffic event has occurred, and movement information of a first moving body, and the movement Based on the information and the traffic event information, a determination unit that determines whether or not the first moving body is directed to a place where the traffic event has occurred, and the traffic event information according to a determination result by the determination unit And an output control unit that controls the output of the control device.

  The acquisition unit further acquires position information of the first moving body, the movement information indicates a traveling direction of the first moving body, and the determination unit includes position information of the first moving body and Based on the position information included in the traffic event information, the direction of the place where the traffic event occurs as viewed from the first mobile object is specified, and the specified mobile direction and the first mobile object indicated by the movement information are specified. Based on the relationship with the traveling direction, it may be determined whether or not the first moving body heads to the place where the traffic event has occurred.

  The control device is provided in a second moving body different from the first moving body, and the output control unit determines that the first moving body is directed to a place where the traffic event has occurred by the determining unit. Based on this, the traffic event information may be transmitted to the first mobile unit by the communication unit.

  The traffic event information includes first distance information and second distance information indicating a longer distance than the first distance information, and the output control unit is configured to output the first distance information from a place where the traffic event has occurred. Based on the fact that the second moving body is located within the distance range indicated by the distance information, the traffic event information is broadcast to the communication unit, and the distance indicated by the first distance information from the place where the traffic event has occurred. Depending on the result of the determination by the determination unit based on the fact that the second moving body is located within the range of the distance indicated by the second distance information from the place where the traffic event has occurred The transmission of the traffic event information to the first moving body may be controlled.

  The traffic event information further includes angle information, and the determination unit is configured to determine whether or not the first moving body is going to a place where the traffic event has occurred. It may be determined whether or not the angle is in a range indicated by the angle information based on the traveling direction of the first moving body.

  The traffic event information includes third distance information indicating a longer distance than the second distance information, angle information corresponding to the second distance information, and angle information corresponding to the third distance information. The determination unit is outside the range of the distance indicated by the first distance information from the location where the traffic event has occurred, and is within the range of the distance indicated by the second distance information from the location where the traffic event has occurred. When the second moving body is located at a position, the determination is made based on the angle information corresponding to the second distance information, and it is outside the range of the distance indicated by the second distance information from the place where the traffic event has occurred. When the second moving body is located within the distance indicated by the third distance information from the place where the traffic event occurs, based on the angle information corresponding to the third distance information Judgment may be made.

  The angle information corresponding to the second distance information may indicate a wider angle than the angle information corresponding to the third distance information.

  The first moving body is a vehicle, and the output control unit is outside a range of a distance indicated by the first distance information from a place where the traffic event has occurred, and from the place where the traffic event has occurred. When the second moving body is located within the distance range indicated by the second distance information, the first moving body that is the transmission destination of the traffic event information is not found over a predetermined period. The transmission of the traffic event information to the vehicle may be controlled.

  The traffic event information acquired by the acquisition unit includes information indicating the remaining number of transmissions, and the output control unit has a value that is 1 smaller than the remaining transmission number based on the remaining transmission number being 1 or more. May be transmitted to the communication unit including traffic event information including the number of remaining transmissions after update.

  The control device is provided in the first mobile unit, and the output control unit is configured to notify the user based on the determination by the determination unit that the first mobile unit goes to the place where the traffic event has occurred. Notification of the traffic event may be controlled.

  The traffic event information includes first distance information and second distance information indicating a longer distance than the first distance information, and the output control unit is configured to output the first distance information from a place where the traffic event has occurred. Based on the fact that the first moving body is located outside the distance range indicated by the distance information and within the distance range indicated by the second distance information from the place where the traffic event has occurred. The output unit is notified of the traffic event, and is outside the range of the distance indicated by the first distance information from the location where the traffic event has occurred, and the second distance from the location where the traffic event has occurred. Notification of the traffic event to the user may be controlled based on the result of the determination by the determination unit based on the position of the first moving body within the distance indicated by the information.

  The movement information indicates a future movement path of the first moving body, and the determination unit determines a location where the traffic event has occurred on the future movement path of the first moving body indicated by the movement information. Based on the existence, it may be determined that the first moving body heads to a place where the traffic event has occurred.

  In order to solve the above problem, according to another aspect of the present invention, acquiring traffic event information including location information of a place where the traffic event has occurred, and movement information of the first moving body, Based on the movement information and the traffic event information, it is determined whether or not the first moving body is going to the place where the traffic event has occurred, and the output of the traffic event information is performed according to the determination result. A control method is provided.

  Moreover, in order to solve the said subject, according to another viewpoint of this invention, a computer acquires the traffic event information containing the positional information on the place where the traffic event generate | occur | produced, and the movement information of a 1st moving body. Based on the acquisition unit, the movement information and the traffic event information, a determination unit that determines whether or not the first moving body is headed to the place where the traffic event has occurred, and depending on the result of the determination by the determination unit Thus, a program is provided for functioning as an output control unit that controls the output of the traffic event information.

  As described above, according to the present invention, it is possible to control the output of traffic event information according to which location a mobile body such as an in-vehicle terminal is heading.

It is explanatory drawing which shows the structure of the communication system between vehicles by embodiment of this invention. It is explanatory drawing which shows the structure of the vehicle-mounted terminal by embodiment of this invention. It is explanatory drawing which shows the packet structural example of the information packet containing traffic event information. It is explanatory drawing which shows the outline | summary of the 1st operation example. It is explanatory drawing which shows the outline | summary of the 1st operation example. It is a flowchart which shows operation | movement regarding preparation of an information packet. It is a flowchart which shows operation | movement of the vehicle-mounted terminal which received the information packet containing traffic event information. It is a flowchart which shows the relay operation | movement of traffic event information. It is a flowchart which shows the transmission control which considered the advancing direction of the surrounding vehicle. It is a flowchart which shows the relay operation | movement of the traffic event information in a 2nd operation example. It is a flowchart which shows the operation | movement by the side of receiving the relay information in a 2nd operation example. It is explanatory drawing which shows the structural example of the information packet used in the 3rd operation example. It is explanatory drawing which shows the specific example of the 2nd setting angle used in a 3rd operation example, and a 3rd setting angle. It is a flowchart which shows the 3rd operation example. It is explanatory drawing which shows the structural example of the information packet used in the 4th operation example. It is explanatory drawing which shows the relay of the traffic event information by a 4th operation example. It is explanatory drawing which shows the relay of the traffic event information by the 5th operation example. It is explanatory drawing which shows the relay of the traffic event information by the 5th operation example. It is explanatory drawing which shows the structural example of the portable terminal mentioned above. It is the block diagram which showed the hardware structural example of the vehicle-mounted terminal.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In addition, in this specification and drawing, about the component which has the substantially same function structure, duplication description is abbreviate | omitted by attaching | subjecting the same code | symbol.

  In the present specification and drawings, a plurality of components having substantially the same functional configuration may be distinguished by adding different alphabets after the same reference numeral. For example, a plurality of configurations having substantially the same functional configuration or logical significance are distinguished as in-vehicle terminals 20A, 20B, and 20C as necessary. However, when it is not necessary to particularly distinguish each of a plurality of constituent elements having substantially the same functional configuration, only the same reference numeral is given to each of the plurality of constituent elements. For example, when it is not necessary to distinguish between the in-vehicle terminals 20A, 20B, and 20C, each in-vehicle terminal is simply referred to as the in-vehicle terminal 20.

<< 1. Configuration of inter-vehicle communication system >>
Embodiments described herein relate generally to an inter-vehicle communication system in which communication is performed between in-vehicle terminals mounted on a vehicle. First, the configuration of a vehicle-to-vehicle communication system according to an embodiment of the present invention will be described with reference to FIG.

  FIG. 1 is an explanatory diagram showing a configuration of a vehicle-to-vehicle communication system according to an embodiment of the present invention. As shown in FIG. 1, the inter-vehicle communication system according to the embodiment of the present invention includes a plurality of vehicles 10, and each vehicle 10 is equipped with an in-vehicle terminal 20. In FIG. 1, a four-wheeled vehicle is shown as the vehicle 10, but the vehicle 10 may be another moving body such as a two-wheeled vehicle or a bicycle.

  The in-vehicle terminal 20 is an example of a control device mounted on the vehicle 10 and has a function of communicating with the in-vehicle terminal 20 of the roadside machine or the surrounding vehicle 10. For example, the in-vehicle terminal 20 wirelessly communicates various information with the in-vehicle terminal 20 of the roadside machine or the surrounding vehicle 10 using DSRC (Dedicated Short Range Communications).

  In the example shown in FIG. 1, the vehicle 10A causes an accident at the place P, and the in-vehicle terminal 20A of the vehicle 10A transmits traffic event information indicating the occurrence of the accident. The traffic event information is received by the in-vehicle terminal 20B located within the radio wave reachable range of the in-vehicle terminal 20A, and the in-vehicle terminal 20B relays the traffic event information to the in-vehicle terminal 20C located within the radio wave reachable range of the in-vehicle terminal 20B. To do. Furthermore, the in-vehicle terminal 20C relays the traffic event information to the in-vehicle terminal 20D located within the radio wave reachable range of the in-vehicle terminal 20C.

  As described above, the in-vehicle terminal 20 sequentially relays the traffic event information, so that even if the infrastructure such as a roadside machine is not in the vicinity of the event occurrence location P, the traffic event information is transmitted from the event occurrence location P. It is possible to transmit to the in-vehicle terminal 20 of the vehicle 10 located at a distant place. The traffic event is not limited to an accident, and may be another event that may affect the traveling state (congestion state) of the vehicle 10 such as a failure of the vehicle 10, road construction, or abnormal road conditions due to a natural disaster. Good.

  The traffic event information described above is useful for the user of the vehicle 10 heading for the event occurrence location P. However, the usefulness of the traffic event information is low for the user of the vehicle 10 moving in a direction away from the event occurrence location P. For this reason, the vehicle-mounted terminal 20 according to an embodiment of the present invention selectively relays traffic event information to the vehicle-mounted terminal 20 mounted on the vehicle 10 heading for the event occurrence place P among the surrounding vehicles. For example, the in-vehicle terminal 20C shown in FIG. 1 relays traffic event information to the in-vehicle terminal 20D mounted on the vehicle 10D whose traveling direction is the direction of the event occurrence location P, but the traveling direction is opposite to the event occurrence location P. The traffic event information is not relayed to the in-vehicle terminal 20E mounted on the vehicle 10E on the side. With this configuration, it is possible to suppress traffic for relaying traffic event information and unnecessary information from being provided to the user of the vehicle 10.

(Configuration of in-vehicle terminal 20)
Here, the configuration of the in-vehicle terminal 20 will be described with reference to FIG. FIG. 2 is an explanatory diagram showing the configuration of the in-vehicle terminal 20 according to the embodiment of the present invention. As shown in FIG. 2, the in-vehicle terminal 20 according to the embodiment of the present invention includes a GPS processing unit 222, an acceleration sensor 224, a gyro sensor 226, a communication unit 228, a display unit 230, a storage unit 240, and a control unit 250.

  The GPS processing unit 222 is an example of a position estimation unit that estimates a current position of the vehicle 10 by processing a satellite signal received from an artificial satellite. The acceleration sensor 224 detects the acceleration of the vehicle 10, and the gyro sensor 226 detects the traveling direction of the vehicle 10.

  The communication unit 228 is an interface with another in-vehicle terminal 20 and wirelessly communicates various information with the other in-vehicle terminal 20. For example, the communication unit 228 according to the present embodiment functions as an acquisition unit that acquires vehicle information about surrounding vehicles and traffic event information.

  FIG. 3 is an explanatory diagram showing a packet configuration example of an information packet including traffic event information. As shown in FIG. 3, the information packet includes a communication header, transmission source vehicle information, and traffic event information. The communication header includes a packet ID and a destination ID. When the information packet is transmitted by unicast, the terminal ID (or vehicle ID) of one of the in-vehicle terminals 20 is set as the destination ID, and when the information packet is transmitted by broadcast, the broadcast address is set in the destination ID. Is set.

  The transmission source vehicle information includes the vehicle ID of the vehicle 10 on which the in-vehicle terminal 20 is mounted, the position information of the vehicle 10, the acceleration, and the traveling direction. The vehicle ID is an ID that uniquely identifies the vehicle 10. The traffic event information includes the vehicle ID of the vehicle 10 that created the traffic event information, the information creation time that indicates the time when the traffic event information was created, the event occurrence location that indicates the location where the traffic event occurred in latitude and longitude, It includes a set distance (first distance information), a second set distance (second distance information), a set angle (angle information), the remaining number of relays, and traffic event details. The first set distance, the second set distance, the set angle, and the remaining relay count will be described in detail in “2. Operation example” and thereafter.

  When the communication unit 228 receives the information packet including the traffic event information described above, the information packet including the traffic event information is relayed based on the control from the control unit 250. In addition, while traffic event information is not received, the communication part 228 broadcasts the information packet containing a communication header and transmission origin vehicle information regularly. Thereby, each in-vehicle terminal 20 can grasp position information of surrounding vehicles existing in the vicinity.

  The display unit 230 is an example of an output unit that outputs information to the user. The display unit 230 displays, for example, map information around the vehicle 10, and superimposes the navigation route on the map information when a navigation route is set. In the present embodiment, the traffic event information received by the communication unit 228 is displayed based on the control from the control unit 250. The user can grasp the event occurrence location and the details of the traffic event by looking at the traffic event information displayed on the display unit 230.

  The storage unit 240 stores various information used for the operation of the in-vehicle terminal 20. For example, the storage unit 240 includes map information for navigation, traffic event information received from the other in-vehicle terminal 20 by the communication unit 228, position information of the vehicle 10 in which the in-vehicle terminal 20 is mounted, vehicle such as acceleration and traveling direction. Information and surrounding vehicle information, which is transmission source vehicle information included in information packets periodically received from other in-vehicle terminals 20 by communication unit 228, are stored.

  The control unit 250 controls the overall operation of the in-vehicle terminal 20. In particular, the control unit 250 according to the present embodiment has functions of an information creation unit 252, a display control unit 254, a relay control unit 256, and a determination unit 258, as shown in FIG.

  The information creation unit 252 creates an information packet. For example, the information creation unit 252 reads vehicle information from the storage unit 240 and creates an information packet including the vehicle information as transmission source vehicle information. The information creation unit 252 periodically generates an information packet including the transmission source vehicle information, and the information packet is broadcast from the communication unit 228. Further, when an event such as a traffic accident, a failure, or an abnormal road condition due to a natural disaster is detected, the information creating unit 252 creates an information packet including the traffic event information shown in FIG. Creation of an information packet including traffic event information will be described in detail with reference to FIG.

  The display control unit 254 is an example of an output control unit that controls the output of information, and controls the display of the display unit 230. For example, the display control unit 254 causes the display unit 230 to display the traffic event information received from the other in-vehicle terminal 20 by the communication unit 228.

  The relay control unit 256 controls the storage of the traffic event information received from the other in-vehicle terminal 20 by the communication unit 228 in the storage unit 240 and the relay of the traffic event information stored in the storage unit 240 to surrounding vehicles. . The relay control unit 256 is an example of an output control unit that controls output (relay) of traffic event information to surrounding vehicles. The determination unit 258 determines whether or not the vehicle 10 on which the in-vehicle terminal 20 is mounted or a surrounding vehicle heads for the event occurrence place P. The functions of the relay control unit 256 and the determination unit 258 will be described in detail in “2. Operation example” below.

<< 2. Example of operation >>
The configuration of the inter-vehicle communication system according to the embodiment of the present invention has been described above. Subsequently, several operation examples of the inter-vehicle communication system according to the embodiment of the present invention will be sequentially described in detail.

<2-1. First operation example>
(Overview)
In the first operation example, the in-vehicle terminal 20 that has received the traffic event information, if the distance between the vehicle 10 in which the in-vehicle terminal 20 is mounted and the event occurrence location P is within the first set distance, Is relayed by broadcast. On the other hand, the in-vehicle terminal 20 generates an event when the distance between the vehicle 10 on which the in-vehicle terminal 20 is mounted and the event occurrence location P is outside the first set distance and within the second set distance. The traffic event information is unicast to the in-vehicle terminals 20 of the surrounding vehicles heading for the place P. A specific example will be described below with reference to FIGS.

  4 and 5 are explanatory diagrams showing an outline of the first operation example. In FIG. 4, a range r1 is a range within a first set distance from the event occurrence location P, and a range r2 is a range within a second set distance from the event occurrence location P. When the in-vehicle terminal 20A of the vehicle 10A generates an information packet including traffic event information and the in-vehicle terminal 20A broadcasts the information packet, the in-vehicle terminal 20B receives the information packet. Since the vehicle equipped with the in-vehicle terminal 20B is located within the range r1, the in-vehicle terminal 20B relays information packets including traffic event information by broadcast.

  The in-vehicle terminal 20C that has received the information packet is located outside the range r1 and within the range r2. For this reason, the in-vehicle terminal 20C relays the information packet including the traffic event information by unicast to the in-vehicle terminal 20D of the vehicle 10D heading for the event occurrence place P among the vehicles 10D and 10E that are neighboring vehicles. The in-vehicle terminal 20C broadcasts an information packet including the vehicle ID of the vehicle in which the in-vehicle terminal 20D is mounted in the information packet, and the in-vehicle terminal 20D targets the in-vehicle terminal 20D from the vehicle ID included in the information packet. You may recognize that

  Here, the setting angle included in the traffic event information is used to determine whether or not the surrounding vehicle is heading to the event occurrence location P. Based on the position information of vehicle 10D and event occurrence location P, determination unit 258 identifies the direction of event occurrence location P as viewed from vehicle 10D (direction H shown in FIG. 5). Then, based on the relationship between direction H and traveling direction G of vehicle 10D shown in FIG. 5, determination unit 258 determines whether vehicle 10D is heading for event occurrence location P. Specifically, the determination unit 258 determines that the vehicle 10D is heading for the event occurrence place P that the direction H is within a set angle range with the traveling direction G of the vehicle 10D as a reference (center). May be.

  In the example shown in FIG. 5, since the direction H is within a set angle range with the traveling direction G of the vehicle 10D as a reference (center), it is determined that the vehicle 10D is heading for the event occurrence place P, and the vehicle 10D Traffic event information is relayed to the in-vehicle terminal 20D. On the other hand, since the direction of the event occurrence place P viewed from the vehicle 10E shown in FIG. 4 is outside the set angle range based on the traveling direction of the vehicle E shown in FIG. The traffic event information is not relayed to the in-vehicle terminal 20E of the vehicle 10E.

  The outline of the first operation example has been described above. Subsequently, an operation related to creation of an information packet, an operation when receiving an information packet, and a relay operation of traffic event information in the first operation example will be described in detail.

(Operation related to creation of information packet)
FIG. 6 is a flowchart showing an operation related to creation of an information packet. The operation can be executed automatically by the in-vehicle terminal 20 that has detected a predetermined event, or based on the operation input of the user of the vehicle 10. The operation shown in FIG. 6 is executed by the in-vehicle terminal 20A in the example shown in FIG.

  First, the information creation unit 252 of the in-vehicle terminal 20 acquires the vehicle ID of the vehicle on which the in-vehicle terminal 20 is mounted from the storage unit 240, and sets the vehicle ID as the information creation vehicle ID of the information packet (S304).

  Then, the GPS processing unit 222 estimates the current position of the vehicle 10, and the information creation unit 252 sets the current position as the event occurrence location of the information packet (S308). Note that, in the event occurrence location, not the current position of the vehicle 10 but position information indicating the occurrence location of the traffic event acquired by other means may be set.

  Subsequently, the information creation unit 252 sets the first set distance, the second set distance, and the set angle in the information packet (S312). The information creation unit 252 can dynamically set the first set distance, the second set distance, and the set angle according to the traffic event that has occurred. For example, the information creation unit 252 may set the first setting distance longer so that the traffic event information is relayed in a wider range regardless of the moving direction of the vehicle 10 as the range in which traffic congestion is expected is larger. Good. On the other hand, the information creation unit 252 may set the first set distance and the second set distance to be smaller as the influence range is smaller, for example, only one lane becomes inaccessible due to an obstacle on the road. With such a configuration, it becomes possible to relay the traffic event information only to the in-vehicle terminal 20 of the vehicle 10 having a higher probability of going to the event occurrence place P. In addition, the information creation unit 252 may set the second set distance longer in an event that has only a large influence on the vehicle 10 that may pass through the event occurrence location P, such as flooding due to heavy rain. With this configuration, it is possible to widely relay traffic event information to the in-vehicle terminal 20 of the vehicle 10 that has a possibility of going to the event occurrence place P. The first set distance, the second set distance, or the set angle may be a fixed value. In this case, the information packet may not include the first set distance, the second set distance, or the set angle. .

  Then, the information creation unit 252 sets the remaining transmission count in the information packet in consideration of the importance of the traffic event information (S316). As the remaining transmission count increases, the traffic event information is relayed more frequently. Therefore, it is desirable to set a larger value as the remaining transmission count as the traffic event information is more important.

  Furthermore, the information creation unit 252 acquires the current time from the built-in clock of the in-vehicle terminal 20, and sets the current time as the information creation time of the information packet (S320). Further, the information creation unit 252 sets the traffic event details of the information packet based on the information acquired from each sensor, for example, and sets the vehicle information acquired from the storage unit 240 as the transmission source vehicle information of the information packet ( S324).

  Thereafter, the communication unit 228 broadcasts the information packet created by the information creation unit 252 (S328). The communication unit 228 repeatedly broadcasts the information packet at a constant period (for example, every 1 second) while the traffic event is occurring (S332 / NO). For example, when the traffic event is resolved or a predetermined time elapses, the information packet Is terminated (S332 / YES).

(Operation when receiving information packet)
FIG. 7 is a flowchart showing the operation of the in-vehicle terminal 20 that has received an information packet including traffic event information. The operation shown in FIG. 7 is performed in the in-vehicle terminals 20B, 20C, and 20D in the example shown in FIG.

  First, the relay control unit 256 of the in-vehicle terminal 20 reads the information creation vehicle ID and the information creation time from the information packet received by the communication unit 228 (S404). Further, the relay control unit 256 reads a list of information creation vehicle IDs and information creation times of the received traffic event information from the storage unit 240 (S408).

  Then, the relay control unit 256 determines whether or not the traffic event information corresponding to the traffic event information of the information packet received in S404 has been stored (S412). Specifically, the relay control unit 256 uses the same information packet received in S404 and the traffic event information having the same information creation vehicle ID and information creation time, or the information packet received in S404 and the information creation vehicle ID are the same. It is determined whether or not there is traffic event information with a newer information creation time. When the traffic event information corresponding to the traffic event information of the information packet received in S404 has been stored (S412 / YES), the relay control unit 256 discards the information packet received in S404 (S416) and operates. Ends.

  On the other hand, when the traffic event information corresponding to the traffic event information of the information packet received in S404 has not been stored (S412 / NO), the display control unit 254 displays the traffic event information on the display unit 230 (S420). Then, the relay control unit 256 subtracts 1 from the remaining number of transmissions included in the traffic event information (S424), and the storage unit 240 stores the traffic event information obtained by subtracting 1 from the remaining number of transmissions (S428). Here, when traffic event information having the same information creation vehicle ID as the traffic event information and having an information creation time older than the traffic event information has been stored, the stored traffic event information indicates the remaining transmission count. Is overwritten with the new traffic event information minus one.

  Note that the control unit 250 may re-search the travel route of the vehicle 10 based on the traffic event information so that the event occurrence location P is avoided, for example, and display the re-searched travel route on the display unit 230. . Moreover, the notification form to the user of the traffic event information is not limited to display, and the traffic event information may be notified to the user by voice.

(Traffic event information relay operation)
FIG. 8 is a flowchart showing the relay operation of traffic event information. The operation illustrated in FIG. 8 is performed in the in-vehicle terminals 20B, 20C, and 20D in the example illustrated in FIG.

  First, the relay control unit 256 reads traffic event information from the storage unit 240 (S432). If the remaining number of transmissions of the read traffic event information is 0 (S436 / YES), this operation ends. On the other hand, if the remaining transmission count of traffic event information is not 0 (S436 / NO), the GPS processing unit 222 estimates the current position (S440), and the relay control unit 256 determines the distance between the current position and the event occurrence location P. Is calculated (S444).

  When the calculated distance exceeds the first set distance included in the traffic event information (S448 / NO), transmission control is performed in consideration of the traveling direction of the surrounding vehicle described later with reference to FIG. 9 (S450). On the other hand, when the calculated distance is less than or equal to the first set distance included in the traffic event information (S448 / YES), the relay control unit 256 sets the transmission source vehicle information of the information packet (S464), and the communication unit 228. Broadcasts an information packet including the transmission source vehicle information and the traffic event information (S468). And the process of S432-S472 is repeated with a fixed period until predetermined time (for example, 6 hours) passes since the information creation time contained in traffic event information (S472). Thereafter, the relay control unit 256 deletes the traffic event information for which a predetermined time has elapsed from the information creation time from the storage unit 240 (S476).

  In addition, when the several traffic event information is memorize | stored in the memory | storage part 240, the process of S432-S476 shown in FIG. 8 is performed about each of several traffic event information.

  FIG. 9 is a flowchart showing transmission control in consideration of the traveling direction of surrounding vehicles. As shown in FIG. 9, when the distance between the current position and the event occurrence location P exceeds the second set distance (S451 / NO), the relay of the traffic event information is not performed. On the other hand, when the distance between the current position and the event occurrence location P is equal to or less than the second set distance (S451 / YES), the determination unit 258 reads the surrounding vehicle information from the storage unit 240 (S452), and Based on the position information and the event occurrence location P, the direction of the event occurrence location P viewed from the surrounding vehicle is specified (S453).

  If the identified direction is not within the set angle range based on the traveling direction of the surrounding vehicle (S454), the process proceeds to S457. On the other hand, when the specified direction is within the range of the set angle based on the traveling direction of the surrounding vehicle (S454 / YES), the relay control unit 256 sets the transmission source vehicle information of the information packet (S455), The communication unit 228 transmits an information packet including the transmission source vehicle information and the traffic event information to surrounding vehicles by unicast (S456). And the process of S452-S456 is repeated about all the surrounding vehicles (S457).

  By the first operation described above, the in-vehicle terminal 20 located within a range in which the distance from the event occurrence place P is farther than the first set distance and the distance from the event occurrence place P is equal to or less than the second set distance is The traffic event information is selectively relayed to the in-vehicle terminal 20 mounted on the vehicle 10 heading for the event occurrence place P. For this reason, it is possible to provide unnecessary traffic event information for the in-vehicle terminal 20 of the vehicle 10 that is away from the event occurrence location P, and to suppress traffic for relaying (diffusion) of the traffic event information.

<2-2. Second example of operation>
Heretofore, the first operation example of the in-vehicle terminal 20 has been described. Then, the 2nd operation example of the vehicle-mounted terminal 20 is demonstrated. In the second operation example, the in-vehicle terminal 20 located within the range where the distance from the event occurrence place P is equal to or less than the second set distance relays the traffic event information by broadcast, and the in-vehicle terminal 20 that receives the broadcast The necessity of displaying the traffic event information is determined.

(Traffic event information relay operation)
FIG. 10 is a flowchart showing the relay operation of traffic event information in the second operation example. First, the relay control unit 256 reads traffic event information from the storage unit 240 (S504). When the remaining number of transmissions of the read traffic event information is 0 (S508 / YES), this operation ends. On the other hand, when the remaining transmission count of the traffic event information is not 0 (S508 / NO), the GPS processing unit 222 estimates the current position (S512), and the relay control unit 256 determines the distance between the current position and the event occurrence location P. Is calculated (S516).

  When the calculated distance exceeds the second set distance included in the traffic event information (S520 / NO), the information packet is not relayed. On the other hand, when the calculated distance is equal to or less than the second set distance included in the traffic event information (S520 / YES), the relay control unit 256 sets the source vehicle information of the information packet (S524), and the communication unit 228. Broadcasts an information packet including the transmission source vehicle information and traffic event information (S528).

  And the process of S504-S528 is repeated with a fixed period until predetermined time (for example, 6 hours) passes since the information creation time contained in traffic event information (S532). Thereafter, the relay control unit 256 deletes the traffic event information for which a predetermined time has elapsed from the information creation time from the storage unit 240 (S536).

(Reception side operation)
FIG. 11 is a flowchart showing the operation on the reception side of the relay information in the second operation example. The operation of FIG. 11 is performed between S412 and S420 described with reference to FIG. First, the GPS processing unit 222 estimates the current position (S544), and the display control unit 254 calculates the distance between the current position and the event occurrence place P (S548). When the calculated distance is equal to or less than the first set distance included in the traffic event information (S552 / YES), the display control unit 254 displays the traffic event information on the display unit 230 (S556).

  On the other hand, when the calculated distance exceeds the first set distance included in the traffic event information (S552 / NO) and the calculated distance is equal to or less than the second set distance (S560 / YES), the determination unit 258 is in-vehicle. Based on the position information of the vehicle 10 on which the terminal 20 is mounted and the event occurrence location P, the direction of the event occurrence location P viewed from the surrounding vehicle is specified (S564).

  When the specified direction is within the range of the set angle based on the traveling direction of the vehicle 10 (S568 / YES), the display control unit 254 displays the traffic event information on the display unit 230 (S556). On the other hand, when the specified direction is outside the set angle range based on the traveling direction of the vehicle 10 (S568 / NO), and when the calculated distance exceeds the second set distance (S560 / NO). This operation ends.

  As described above, according to the second operation example, the in-vehicle terminal 20 located within a range where the distance from the event occurrence place P is equal to or less than the second set distance relays the traffic event information by broadcast. Therefore, when there are two or more surrounding vehicles that should convey the traffic event information around the in-vehicle terminal 20, in the second operation example, the traffic event information is transmitted rather than relaying the traffic event information to each surrounding vehicle by unicast. It is possible to suppress traffic for relaying.

  In addition, in FIG. 11, although the distance between the present position of the vehicle 10 of the vehicle-mounted terminal 20 that received the traffic event information and the event occurrence place P is compared with the first set distance and the second set distance, The distance between the current position of the vehicle 10 of the in-vehicle terminal 20 that is the transmission source of the traffic event information and the event occurrence location P may be compared with the first set distance and the second set distance.

<2-3. Third operation example>
Heretofore, the second operation example of the in-vehicle terminal 20 has been described. Then, the 3rd operation example of the vehicle-mounted terminal 20 is demonstrated. Although the third operation example is based on the first operation example described above, it is possible to realize finer transmission control in consideration of the traveling direction of the surrounding vehicle than the first operation example.

  FIG. 12 is an explanatory diagram illustrating a configuration example of an information packet used in the third operation example. The information packet used in the third operation example includes information on one or more set distances and set angles in addition to the information included in the information packet described with reference to FIG. In the example shown in FIG. 12, in addition to the second set angle corresponding to the first set distance, the second set distance, and the second set distance, the third set angle corresponding to the third set distance and the third set distance is traffic. Included in event information. A value smaller than the second setting angle is set as the third setting angle. The relay control using the second set angle and the third set angle will be described with reference to FIG.

  FIG. 13 is an explanatory diagram showing specific examples of the second set angle and the third set angle used in the third operation example. In the example shown in FIG. 13, the direction of the event occurrence place P viewed from the vehicle 10 </ b> A and the direction of the event occurrence place P viewed from the vehicle 10 </ b> B are the same direction H. Further, the traveling direction of the vehicle 10A and the traveling direction of the vehicle 10B are the same traveling direction G. The vehicle 10A is located outside the range r1 within the first set distance from the event occurrence location P and within the range r2 within the second set distance from the event occurrence location P. The vehicle 10B is located outside the range r2 within the second set distance from the event occurrence location P and within the range r3 within the third set distance from the event occurrence location P.

  In this case, the second set angle is used in determining whether it is necessary to relay the traffic event information to the vehicle 10A, and the third set angle is used in determining whether it is necessary to relay the traffic event information to the vehicle 10B. . In the example shown in FIG. 13, since the direction H is within the second set angle range with the traveling direction G of the vehicle 10A as a reference (center), it is determined that the vehicle 10A is heading for the event occurrence place P, and the vehicle 10A The traffic event information is relayed to the in-vehicle terminal 20A. On the other hand, since the direction H is outside the range of the third set angle with the traveling direction G of the vehicle 10B as a reference (center), the traffic event information is not relayed to the in-vehicle terminal 20B of the vehicle 10B.

  Regarding the plurality of vehicles 10, even if the angle between the direction of the event occurrence place P viewed from the vehicle 10 and the traveling direction of the vehicle 10 is the same, the event occurrence place is closer to the vehicle 10 located far from the event occurrence place P. The probability of going to P is considered low. Therefore, as in the third operation example, by associating a smaller setting angle with a larger setting distance, it is possible to suppress the traffic event information from being relayed to the vehicle 10 that does not actually go to the event occurrence location P.

  Hereinafter, the third operation example described above will be organized with reference to FIG.

  FIG. 14 is a flowchart showing a third operation example. Specifically, FIG. 14 is an example of the process of S450 described with reference to FIG. First, when the distance between the current position of the in-vehicle terminal 20 and the event occurrence location P is equal to or less than the second set distance (S604 / YES), the determination unit 258 and the relay control unit 256 perform steps S452 to S456 in FIG. The process shown is executed using the second set distance (S608).

  In addition, when the distance between the current position of the in-vehicle terminal 20 and the event occurrence location P exceeds the second set distance and is equal to or less than the third set distance (S604 / NO, S612 / YES), the determination unit 258 and the relay control The unit 256 executes the processing shown in S452 to S456 of FIG. 9 using the third set distance (S608).

  When the distance between the current position of the in-vehicle terminal 20 and the event occurrence location P exceeds the second set distance (S612 / NO), similarly, the determination unit 258 and the relay control unit 256 determine that the current position and the event occurrence location P 9 is executed using the set angle corresponding to the minimum set distance satisfying the distance between <the Nth set distance (S620).

  As described above, according to the third operation example, fine transmission control in consideration of the traveling direction of the surrounding vehicle can be realized by setting the set of the set distance and the set angle over a plurality of stages. Is possible.

<2-4. Fourth example of operation>
Heretofore, the third operation example of the in-vehicle terminal 20 has been described. Then, the 4th operation example of the vehicle-mounted terminal 20 is demonstrated. In the fourth operation example, the determination as to whether or not the surrounding vehicle is heading to the event occurrence location P is made based on the future movement route of the surrounding vehicle.

  FIG. 15 is an explanatory diagram illustrating a configuration example of an information packet used in the fourth operation example. As shown in FIG. 15, the transmission source vehicle information of the information packet used in the fourth operation example includes a movement route in addition to the vehicle ID, the position information of the vehicle 10 and the acceleration. On the other hand, the traffic event information of the information packet used in the fourth operation example does not include the set angle described with reference to FIG.

  The movement route is a future movement route of the vehicle 10, and is set by the navigation function based on, for example, the input of the destination by the user. The movement route may be a data string of position information including latitude and longitude.

  The determination unit 258 of the in-vehicle terminal 20 whose distance from the event occurrence place P is greater than the first set distance and less than or equal to the second set distance determines whether or not the surrounding vehicle heads for the event occurrence place P based on the movement route of the surrounding vehicle. Judging. Specifically, it is determined that the surrounding vehicle is heading to the event occurrence location P based on the presence of the event occurrence location P on the moving route of the surrounding vehicle. The communication unit 228 transmits the traffic event information to the surrounding vehicle by unicast based on the determination by the determining unit 258 that the surrounding vehicle is going to the event occurrence location P.

  FIG. 16 is an explanatory diagram showing relay of traffic event information according to the fourth operation example. As described with reference to FIG. 4, in the first operation example, since the traveling direction of the vehicle 10E is opposite to the direction of the event occurrence place P viewed from the vehicle 10E, the vehicle-mounted terminal 20E of the vehicle 10E is mounted on the vehicle-mounted terminal 20E. Traffic event information is not relayed from the terminal 20C.

  On the other hand, in the fourth operation example, since the event occurrence location P exists on the moving path of the vehicle 10E indicated by the broken line, the determination unit 258 of the in-vehicle terminal 20C determines that the vehicle 10E is heading for the event occurrence location P. . As a result, the traffic event information is relayed from the in-vehicle terminal 20C to the in-vehicle terminal 20E.

  As described above, according to the fourth operation example, it is possible to reliably relay the traffic event information by the surrounding vehicles heading for the event occurrence place P. The in-vehicle terminal 20C may broadcast the traffic event information regardless of the travel route of the surrounding vehicle. In this case, since the determination using the movement route is performed on the side of the surrounding vehicle as described in the second operation example, the information packet periodically exchanged between the in-vehicle terminals 20 The transmission source vehicle information may not include the movement route.

<2-5. Fifth example of operation>
Heretofore, the fourth operation example of the in-vehicle terminal 20 has been described. Subsequently, a fifth operation example of the in-vehicle terminal 20 will be described. In the fifth operation example, the in-vehicle terminal 20 can relay the traffic event information not only to the in-vehicle terminal 20 of the surrounding vehicle but also to a portable terminal that is a non-vehicle such as a pedestrian. Hereinafter, the fifth operation example of the in-vehicle terminal 20 will be specifically described with reference to FIGS. 17 and 18.

  17 and 18 are explanatory diagrams showing relay of traffic event information according to the fifth operation example. As illustrated in FIG. 17, the in-vehicle terminal 20 </ b> C that has received the traffic event information from the in-vehicle terminal 20 </ b> B searches for surrounding vehicles heading for the event occurrence location P. In the example shown in FIG. 17, there is no surrounding vehicle heading for the event occurrence place P within the radio wave reachable range of the in-vehicle terminal 20C. The traffic event information is relayed to any in-vehicle terminal 20 if the traffic volume around the in-vehicle terminal 20C is small and there is no surrounding vehicle heading to the event occurrence place P until a predetermined time has elapsed from the creation time of the traffic event information. The traffic event information will be deleted without it.

  In view of this, the in-vehicle terminal 20C, when a surrounding vehicle heading for the event occurrence place P does not appear even after a certain period of time has elapsed, as shown in FIG. An information packet including event information is transmitted. The portable terminal 30 stores transmission source vehicle information and traffic event information. Note that the in-vehicle terminal 20C may recognize that the mobile terminal 30 is not the in-vehicle terminal 20 based on the terminal ID included in the information packet that the mobile terminal 30 periodically transmits.

  Thereafter, when time elapses and the vehicle 10D appears near the mobile terminal 30 as shown in FIG. 18, an information packet including transmission source vehicle information periodically transmitted from the in-vehicle terminal 20D of the vehicle 10D is transmitted to the mobile terminal. 30 receives. When it is determined that the vehicle 10D is heading for the event occurrence location P based on the reception of the information packet, the mobile terminal 30 transmits an information packet including traffic event information to the in-vehicle terminal 20D of the vehicle 10D. Here, the information packet may include transmission source vehicle information included in the information packet received from the in-vehicle terminal 20C, that is, vehicle information related to the vehicle 10C. In this case, the in-vehicle terminal 20D can process the traffic event information in the same manner as when receiving the relay of the traffic event information directly from the in-vehicle terminal 20C.

  FIG. 19 is an explanatory diagram illustrating a configuration example of the mobile terminal 30 described above. As illustrated in FIG. 19, the mobile terminal 30 includes a GPS processing unit 322, an acceleration sensor 324, a gyro sensor 326, a communication unit 328, a display unit 330, a storage unit 340, and a control unit 350. The GPS processing unit 322, the acceleration sensor 324, the gyro sensor 326, the communication unit 328, and the display unit 330 are the GPS processing unit 222, the acceleration sensor 224, the gyro sensor 226, and the communication unit 228 of the in-vehicle terminal 20 described with reference to FIG. The display unit 230 is substantially the same.

  The storage unit 340 stores traffic event information received from the in-vehicle terminal 20 by the communication unit 328, and surrounding vehicle information that is transmission source vehicle information included in information packets periodically received from the in-vehicle terminal 20 by the communication unit 228. To do. Furthermore, the storage unit 340 stores the transmission source vehicle information included in the same information packet as the traffic event information received by the communication unit 328.

  The control unit 350 controls the overall operation of the mobile terminal 30. Specifically, the control unit 350 has functions of a display control unit 354, a relay control unit 356, and a determination unit 358.

  The display control unit 354 is an example of an output control unit that controls the output of information, and controls the display of the display unit 330. Note that the traffic event information received from the in-vehicle terminal 20 by the communication unit 328 is significant information for the user of the vehicle 10, but the mobile terminal 30 is a terminal carried by a pedestrian, and thus the display control of the mobile terminal 30 is performed. The unit 354 may not display the traffic event information received from the in-vehicle terminal 20 by the communication unit 328 on the display unit 230.

  The function of the determination unit 358 is substantially the same as the function of the determination unit 258 of the in-vehicle terminal 20 described with reference to FIG. The function of the relay control unit 356 is substantially the same as the function of the relay control unit 256 of the in-vehicle terminal 20 described with reference to FIG. 2, but the relay control unit 356 is a traffic event received by the communication unit 328. The transmission source vehicle information of the information is stored in the storage unit 340, and an information packet including the transmission source vehicle information and the traffic event information is transmitted to the communication unit 328.

  According to the fifth operation example described above, even in a geographical range where the traffic volume of the vehicle 10 is small, the relay of the traffic event information is not interrupted, and the traffic event information is diffused to the vehicle 10 heading for the event occurrence place P. It is possible.

<< 3. Modification >>
The embodiments of the present invention have been described above. Hereinafter, some modifications of the embodiment of the present invention will be described. In addition, each modification demonstrated below may be applied to embodiment of this invention independently, and may be applied to embodiment of this invention in combination. Each modification may be applied instead of the configuration described in the embodiment of the present invention, or may be additionally applied to the configuration described in the embodiment of the present invention.

  For example, in the fourth operation example, the example in which it is determined whether or not the surrounding vehicle is heading to the event occurrence place P based on the future movement route of the surrounding vehicle set by the navigation function has been described. 258 may determine whether or not the surrounding vehicle is heading for the event occurrence place P by another method. For example, when the road on which the surrounding vehicle is traveling does not branch until reaching the event occurrence location P, the determination unit 258 may determine that the surrounding vehicle is heading for the event occurrence location P. Alternatively, the determination unit 258 can also determine whether or not the surrounding vehicle is heading to the event occurrence location P based on the history of the road on which the surrounding vehicle customarily passes.

  Moreover, although the vehicle-mounted terminal 20 which received traffic event information demonstrated the example which displays traffic event information in said operation example, the utilization method of traffic event information is not restricted to a display. For example, the in-vehicle terminal 20 controls the vehicle 10 according to the content of the traffic event information so that the vehicle 10 decelerates as the vehicle 10 approaches the event occurrence place P (for example, the vehicle speed becomes equal to or lower than the legal speed). May be.

  Further, in the first operation example, the example in which the in-vehicle terminal 20C illustrated in FIG. 4 transmits the information packet including the traffic event information to the in-vehicle terminal 20D by unicast has been described. The transmission method is not limited to unicast. For example, the in-vehicle terminal 20C may selectively transmit the information packet to the in-vehicle terminal 20D by broadcasting the information packet with power corresponding to the distance from the in-vehicle terminal 20D based on the distance from the in-vehicle terminal 20D. .

  In the above operation example, the distance from the event occurrence location P where the in-vehicle terminal 20 broadcasts the traffic event information by broadcasting is described as the first set distance regardless of whether or not the surrounding vehicle goes to the event occurrence location P. However, the first set distance may not be set. That is, the in-vehicle terminal 20 may control the relay of the traffic event information to the surrounding vehicle according to whether or not the surrounding vehicle goes to the event occurrence location P regardless of the distance from the event occurrence location P.

<< 4. Hardware configuration >>
The embodiments of the present invention have been described above. Information processing such as creation of traffic event information and relay control of traffic event information described above is realized by cooperation of software and hardware of the in-vehicle terminal 20 described below.

  FIG. 20 is a block diagram illustrating a hardware configuration example of the in-vehicle terminal 20. The in-vehicle terminal 20 includes a CPU (Central Processing Unit) 201, a ROM (Read Only Memory) 202, a RAM (Random Access Memory) 203, and a host bus 204. The in-vehicle terminal 20 includes a bridge 205, an external bus 206, an interface 207, an input device 208, a display device 209, an audio output device 210, a storage device (HDD) 211, a drive 212, and a network interface. 215.

  The CPU 201 functions as an arithmetic processing device and a control device, and controls the overall operation in the in-vehicle terminal 20 according to various programs. Further, the CPU 201 may be a microprocessor. The ROM 202 stores programs used by the CPU 201, calculation parameters, and the like. The RAM 203 temporarily stores programs used in the execution of the CPU 201, parameters that change as appropriate during the execution, and the like. These are connected to each other by a host bus 204 including a CPU bus. The functions of the control unit 250 described with reference to FIG. 2 and the like can be realized by the cooperation of the CPU 201, the ROM 202, the RAM 203, and the software.

  The host bus 204 is connected to an external bus 206 such as a PCI (Peripheral Component Interconnect / Interface) bus via a bridge 205. Note that the host bus 204, the bridge 205, and the external bus 206 are not necessarily configured separately, and these functions may be mounted on one bus.

  The input device 208 generates input signals based on the input by the user, such as a mouse, keyboard, touch panel, button, microphone, sensor, switch, and lever. It consists of a control circuit. A user of the in-vehicle terminal 20 can input various data or instruct a processing operation to the in-vehicle terminal 20 by operating the input device 208.

  The display device 209 includes, for example, a display device such as a CRT (Cathode Ray Tube) display device, a liquid crystal display (LCD) device, a projector device, an OLED (Organic Light Emitting Diode) device, and a lamp. The audio output device 210 includes an audio output device such as a speaker and headphones. The display device 209 corresponds to the display unit 230 described with reference to FIG.

  The storage device 211 is a device for storing data. The storage device 211 may include a storage medium, a recording device that records data on the storage medium, a reading device that reads data from the storage medium, a deletion device that deletes data recorded on the storage medium, and the like. The storage device 211 includes, for example, an HDD (Hard Disk Drive) or an SSD (Solid Storage Drive), or a memory having an equivalent function. The storage device 211 drives a storage and stores programs executed by the CPU 201 and various data. The storage device 211 corresponds to the storage unit 240 described with reference to FIG.

  The drive 212 is a storage medium reader / writer, and is built in or externally attached to the in-vehicle terminal 20. The drive 212 reads information recorded on a removable storage medium 24 such as a mounted magnetic disk, optical disk, magneto-optical disk, or semiconductor memory, and outputs the information to the RAM 203 or the storage device 211. The drive 212 can also write information to the removable storage medium 24.

  The network interface 215 is a communication interface configured with, for example, a communication device for connecting to the dedicated network 12. The network interface 215 may be a wireless LAN (Local Area Network) compatible communication device or a wire communication device that performs wired communication.

<< 5. Conclusion >>
As described above, according to the embodiment of the present invention, the distance from the event occurrence location P is farther than the first set distance, and the distance from the event occurrence location P is within the second set distance or less. The in-vehicle terminal 20 that is positioned selectively relays the traffic event information to the in-vehicle terminal 20 that is mounted on the vehicle 10 that goes to the event occurrence place P. For this reason, it is possible to provide unnecessary traffic event information for the in-vehicle terminal 20 of the vehicle 10 that is away from the event occurrence location P, and to suppress traffic for relaying (diffusion) of the traffic event information.

  Although the preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, the present invention is not limited to such examples. It is obvious that a person having ordinary knowledge in the technical field to which the present invention pertains can come up with various changes or modifications within the scope of the technical idea described in the claims. Of course, it is understood that these also belong to the technical scope of the present invention.

  For example, each step in the processing of the in-vehicle terminal 20 of the present specification does not necessarily have to be processed in time series in the order described as a flowchart. For example, each step in the processing of the in-vehicle terminal 20 may be processed in an order different from the order described as the flowchart, or may be processed in parallel.

  Further, it is possible to create a computer program for causing hardware such as a CPU, a ROM, and a RAM built in the in-vehicle terminal 20 to exhibit functions equivalent to the respective configurations of the in-vehicle terminal 20 described above. A storage medium storing the computer program is also provided.

DESCRIPTION OF SYMBOLS 10 Vehicle 20 Car-mounted terminal 30 Portable terminal 222 GPS processing part 224 Acceleration sensor 226 Gyro sensor 228 Communication part 230 Display part 240 Storage part 250 Control part 252 Information preparation part 254 Display control part 256 Relay control part 258 Judgment part 322 Processing part 324 Acceleration Sensor 326 Gyro sensor 328 Communication unit 330 Display unit 340 Storage unit 350 Control unit 354 Display control unit 356 Relay control unit 358 Determination unit

Claims (14)

An acquisition unit for acquiring traffic event information including location information of a place where the traffic event has occurred, and movement information of the first moving body;
Based on the movement information and the traffic event information, a determination unit that determines whether or not the first moving body goes to a place where the traffic event has occurred;
An output control unit for controlling the output of the traffic event information according to a result of the determination by the determination unit;
A control device comprising: The acquisition unit further acquires position information of the first moving body,
The movement information indicates a traveling direction of the first moving body,
The determination unit specifies the direction of the place where the traffic event occurs as viewed from the first mobile body based on the location information of the first mobile body and the location information included in the traffic event information, 2. It is determined whether or not the first moving body is directed to a place where the traffic event has occurred based on a relationship between the identified direction and the traveling direction of the first moving body indicated by the movement information. The control device described in 1. The control device is provided in a second moving body different from the first moving body,
The output control unit transmits the traffic event information to the communication unit to the communication unit based on the determination by the determination unit that the first mobile unit is going to the place where the traffic event has occurred. The control device according to claim 2. The traffic event information includes first distance information and second distance information indicating a longer distance than the first distance information,
The output control unit
Based on the fact that the second moving body is located within the range of the distance indicated by the first distance information from the place where the traffic event occurs, the traffic event information is broadcast to the communication unit,
The second movement outside the range of the distance indicated by the first distance information from the place where the traffic event has occurred and within the range of the distance indicated by the second distance information from the place where the traffic event has occurred The control device according to claim 3, wherein transmission of the traffic event information to the first moving body is controlled based on a position of a body according to a result of determination by the determination unit. The traffic event information further includes angle information,
The determination unit is configured to determine whether or not the first moving body is going to a place where the traffic event has occurred, and the specified direction is based on a traveling direction of the first moving body indicated by the movement information. The control device according to claim 4, wherein it is determined whether the angle information is within an angle range indicated by the angle information. The traffic event information includes third distance information indicating a longer distance than the second distance information, angle information corresponding to the second distance information, and angle information corresponding to the third distance information. ,
The determination unit
The second movement outside the range of the distance indicated by the first distance information from the place where the traffic event has occurred and within the range of the distance indicated by the second distance information from the place where the traffic event has occurred When the body is located, a determination is made based on angle information corresponding to the second distance information,
The second movement is outside the range of the distance indicated by the second distance information from the place where the traffic event has occurred and within the range of the distance indicated by the third distance information from the place where the traffic event has occurred. The control device according to claim 5, wherein, when a body is located, a determination is made based on angle information corresponding to the third distance information.   The control device according to claim 6, wherein the angle information corresponding to the second distance information indicates a wider angle than the angle information corresponding to the third distance information. The first moving body is a vehicle;
The output control unit is outside a distance range indicated by the first distance information from a location where the traffic event occurs, and is within a distance range indicated by the second distance information from the location where the traffic event occurs. Control the transmission of the traffic event information to a non-vehicle if the first mobile object that is the transmission destination of the traffic event information is not found for a predetermined period of time The control device according to any one of claims 4 to 7. The traffic event information acquired by the acquisition unit includes information indicating the remaining number of transmissions,
The said output control part makes the said communication part transmit the traffic event information which contains a value smaller than the said transmission remaining number as a transmission remaining number after an update based on the said transmission remaining number being 1 or more. The control apparatus as described in any one of -8. The control device is provided in the first moving body,
The said output control part controls the notification about the said traffic event to a user based on having judged by the said judgment part that the said 1st moving body heads to the place where the said traffic event generate | occur | produced. The control device described in 1. The traffic event information includes first distance information and second distance information indicating a longer distance than the first distance information,
The output control unit
The first movement outside the range of the distance indicated by the first distance information from the place where the traffic event has occurred and within the range of the distance indicated by the second distance information from the place where the traffic event has occurred Based on the position of the body, the output unit is notified about the traffic event to the user,
The first movement outside the range of the distance indicated by the first distance information from the place where the traffic event has occurred and within the range of the distance indicated by the second distance information from the place where the traffic event has occurred The control device according to claim 10, wherein the control device controls notification of the traffic event to the user based on a result of determination by the determination unit based on the position of the body. The movement information indicates a future movement path of the first moving body,
The determination unit is configured to detect the first movement to a place where the traffic event has occurred based on a location where the traffic event has occurred on a future movement route of the first moving body indicated by the movement information. The control device according to claim 1, wherein the control device determines that the body is headed. Obtaining traffic event information including location information of a place where the traffic event has occurred, and movement information of the first moving body;
Based on the movement information and the traffic event information, determining whether or not the first moving body is going to the place where the traffic event has occurred;
Controlling the output of the traffic event information according to the result of the determination;
Including a control method. Computer
An acquisition unit for acquiring traffic event information including location information of a place where the traffic event has occurred, and movement information of the first moving body;
Based on the movement information and the traffic event information, a determination unit that determines whether or not the first moving body goes to a place where the traffic event has occurred;
An output control unit for controlling the output of the traffic event information according to a result of the determination by the determination unit;
Program to function as

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