• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
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  • 优先权
    • 专利摘要:
    The present invention relates to a vehicle information communication system (10) comprising: a plurality of vehicles (100); and a server (200) configured to communicate with the plurality of vehicles (100). server 200 is configured to perform communication using either a first communication mode or a second communication mode. In the first mode of communication, server 200 receives and transmits information to and from each of the plurality of vehicles 100 individually. In the second mode of communication, server 200 receives and transmits information to and from a portion of the plurality of vehicles 100 and the information is shared between the plurality of vehicles 100 using vehicle-to-vehicle communication.
    公开号:BR102018071318A2
    申请号:R102018071318-3
    申请日:2018-10-17
    公开日:2019-06-04
    发明作者:Hiroki Sawada；Masato TAMAOKI；Eisuke ANDO；Masato Endo；Kuniaki Hasegawa
    申请人:Toyota Jidosha Kabushiki Kaisha；
    IPC主号:
    专利说明:

    Invention Patent Descriptive Report for VEHICLE INFORMATION COMMUNICATION SYSTEM AND ENVIRONMENT AND SERVER IMPROVEMENT SYSTEM USED IN THE SAME.
    [001] This non-provisional application is based on Japanese Patent Application No. 2017-218408 filed on November 13, 2017 at the Japan Patent Office, the complete content of which is incorporated herein for reference.
    BACKGROUND
    FIELD [002] The present disclosure relates to a vehicle information communication system and an environment improvement system, and a server used in it. More particularly, the present disclosure relates to the technique of performing communication, switching a mode of communication between a server and vehicles.
    TECHNICAL BACKGROUND DESCRIPTION [003] Japanese Open Patent Application No. 2009-2769 91 discloses a risk prevention system to avoid risk at a vehicle group level. In the risk prevention system disclosed in Japanese Open Patent No. 2009-276991, upon receiving information that a risk of collision with a follower vehicle (third vehicle) was detected from a vehicle (first vehicle), a Traffic information management provides the first vehicle and a surrounding vehicle (second vehicle) with a command to perform coordinated travel control, thereby preventing a collision between the first vehicle and the third vehicle and a collision between the first vehicle and the second vehicle.
    SUMMARY [004] In the system disclosed in the Japanese Patent Application in
    Open N “2009-276991, the server provides comprehensive control of a plurality of vehicles and thus security at a group level.
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    2/29 vehicles can be improved. However, the server performs all the control and, therefore, when the number of vehicles to be controlled increases, a load on the server increases, which can cause a reduction in the speed of control and the like.
    [005] On the other hand, the use of a blockchain (chain of blocks) disclosed in Japanese Open Patent No. 2017-12 3692 and Japanese Open Patent No. 2017-091149 was proposed as a method to manage data in a manner distributed.
    [006] The present disclosure was made to solve the problem described above, and an objective of the present disclosure is to provide a vehicle information communication system configured to carry out communication between a plurality of vehicles and a server, in which an increase in load on the server is deleted and appropriate communication is performed.
    [007] A vehicle information communication system in accordance with the present disclosure includes: a plurality of vehicles, and a server configured to communicate with the plurality of vehicles. The server communicates with the plurality of vehicles using either a first mode of communication or a second mode of communication. In the first mode of communication, the server receives and transmits information to and from each of the plurality of vehicles individually. In the second mode of communication, the server receives and transmits information to and from a part of the plurality of vehicles and the information is shared between the plurality of vehicles using vehicle-to-vehicle communication. [008] According to the present disclosure, in the system configured to carry out communication between the plurality of vehicles and the server, the communication mode can be switched between the first communication mode and the second communication mode. In the first mode of communication, communication is performed
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    3/29 individually between each vehicle and the server. In the second mode of communication, communication is distributed and performed between the server and only a part of the vehicles and the information is shared between the vehicles using vehicle-to-vehicle communication. In the first mode of communication, information can be obtained in real time. However, a load on the server side increases when the number of vehicles with which the server communicates increases. By switching appropriately between the two communication modes, an increase in the communication load on the server can be suppressed and appropriate communication can be performed.
    [009] The server performs communication in the first communication mode when a communication load between the server and the plurality of vehicles is less than a threshold value and performs communication in the second communication mode when the communication load is greater than the value threshold.
    [0010] With such a configuration, information can be obtained in real time using the first communication mode when the communication load between the server and vehicles is low, and an increase in load can be suppressed by distributed communication when the load of communication is high.
    [0011] In the second mode of communication, the plurality of vehicles share information using blockchain authentication. [0012] By sharing information using blockchain authentication, the reliability and robustness of data shared between vehicles can be ensured.
    [0013] An environmental improvement system in accordance with another aspect of the present disclosure includes: a sensor configured to detect a state of pollution by an environmental pollutant; a plurality of vehicles in each of which an environmental enhancement device configured to remove the environmental pollutant is
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    Mounted 4/29; and a server configured to communicate with the plurality of vehicles. The server communicates with the plurality of vehicles using either a first mode of communication or a second mode of communication. In the first mode of communication, the server receives and transmits information to and from each of the plurality of vehicles individually. In the second mode of communication, the server receives and transmits information to and from part of the plurality of vehicles and the information is shared between the plurality of vehicles using vehicle-to-vehicle communication. When a level of pollution by the environmental pollutant exceeds a reference value in an area where the sensor is located, the server causes a selected vehicle to move from the plurality of vehicles to the area and generates a command to perform an improvement operation. of the environment using the environment improvement device.
    [0014] By switching the communication mode between the first communication mode and the second communication mode and performing communication in the environment improvement system configured to improve the state of environmental pollution in the area using the plurality of vehicles over each of which the environmental improvement device is fitted, an increase in the communication load between the server and the vehicles can be suppressed and appropriate communication can be carried out.
    [0015] The server performs communication in the first communication mode when the number of vehicles selected to perform the environment improvement operation is less than the reference number and performs communication in the second communication mode when the number is greater than the number of reference.
    [0016] With this configuration, information can be obtained in real time using the first communication mode when the
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    5/29 number of target vehicles is small and the communication load between the server and the vehicles is low, and an increase in load can be suppressed by distributed communication when the number of target vehicles is large and the communication load is high.
    [0017] The sensor is provided in each of the plurality of vehicles. [0018] When the level of pollution is determined based only on information from a fixed sensor, improving the environment throughout the area may be impossible if the state of pollution in the area is not uniform. Using sensors mounted on mobile vehicles, the pollution status can be detected over a wider range in the area. Thus, the state of environmental pollution can be adequately improved throughout the area.
    [0019] The server calculates the pollution level for each predetermined area, using position information from the plurality of vehicles and information about the pollution status detected by the sensor.
    [0020] With such a configuration, the position information of moving vehicles and the pollution status can be associated with each other and the pollution level can be calculated, and thus, the environmental pollution status in the area can be detected in a most appropriate way.
    [0021] When the server performs communication in the second communication mode, the server determines, for each area, a representative vehicle for communication with the server. During communication in the second communication mode, the representative vehicle transmits the information from the server to the other vehicles in the area by vehicle to vehicle communication and transmits the information shared between the vehicles in the area to the server.
    [0022] Information from the server is transmitted to each vehicle via the representative vehicle and the information
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    6/29 shared between the vehicles are also transmitted to the server by the representative vehicle. Since the representative vehicle provides comprehensive control of the vehicle group as described above, an increase in communication load between the vehicles and the server can be suppressed and appropriate communication can be performed.
    [0023] A server in accordance with yet another aspect of this disclosure is configured to communicate with a plurality of vehicles. The server communicates with the plurality of vehicles using either a first mode of communication or a second mode of communication. The first mode of communication is a mode of communication in which the server receives and transmits information to and from each of the plurality of vehicles individually. The second mode of communication is a mode of communication in which the server receives and transmits information to and from a part of the plurality of vehicles and the information is shared among the plurality of vehicles using vehicle-to-vehicle communication. [0024] The objectives, characteristics, aspects and previous and other advantages of this disclosure will become more evident from the detailed description below of this disclosure, when taken in conjunction with the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS [0025] Fig. 1 is a schematic diagram of a global configuration of a vehicle information communication system (environment improvement system) according to the present modality.
    [0026] Fig. 2 is a block diagram to illustrate the details of a vehicle and a server in Fig. 1.
    [0027] Fig. 3 is a diagram to illustrate an overview of communication in a first mode of communication.
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    7/29 [0028] Fig. 4 is a diagram to illustrate an overview of communication in a second mode of communication.
    [0029] Fig. 5 is a flow chart to illustrate the switching control of the communication mode performed on the server.
    [0030] Fig. 6 shows an example of the content of the vehicle information transmitted from the vehicle to the server.
    [0031] Fig. 7 shows an example of a map indicating a pollution level for each area created on the server.
    [0032] Fig. 8 shows an example of determining the need for improving the environment and selecting vehicles that are run by the server.
    [0033] Fig. 9 shows an example of the content of a control command provided by the server for the vehicle in the first communication mode.
    [0034] Fig. 10 is a flow chart to illustrate a detailed control process performed on the vehicle in the first communication mode.
    [0035] Fig. 11 is a flow chart to illustrate a detailed control process performed on the server in the first communication mode.
    [0036] Fig. 12 shows an example of the content of a control command provided by the server for the vehicle in the second communication mode.
    [0037] Fig. 13 is a flow chart to illustrate a detailed control process performed on the server and the vehicle in the second communication mode.
    DESCRIPTION OF THE PREFERRED EMBODIMENTS [0038] One embodiment of the present disclosure will be described in detail below with reference to the drawings, where the same or corresponding parts are indicated by the same characters.
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    8/29 reference and its description will not be repeated.
    (System overview) [0039] Fig. 1 is a schematic diagram of an overall configuration of a vehicle information communication system 10 in accordance with the present embodiment.
    [0040] Referring to Fig. 1, the vehicle information communication system 10 includes a plurality of vehicles (hereinafter also referred to simply as vehicles) 100, and a server 200 configured to communicate with vehicles 100, and information is exchanged between the server 200 and vehicles 100 [0041] In the present modality, the case of an environmental improvement system configured to remove an environmental pollutant in a target area using a plurality of vehicles each having an environmental improvement device mounted on it, will be described as a specific example of vehicle information communication system. In the description that follows, the vehicle information communication system 10 can also be referred to as the environment improvement system 10. The vehicle information communication system according to the present embodiment is not limited to the described environment improvement system. below, provided that information is exchanged between server 200 and the plurality of vehicles 100. [0042] Vehicles 100 and server 200 are configured to exchange information mutually through a communication network 300, such as, for example, the Internet or a telephone line. Vehicles 100 and server 200 can communicate directly with each other without communication network 300. Direct communication between vehicles 100 is also possible.
    [0043] Vehicle 100 is an electricity-powered vehicle that can travel using the electrical energy provided by a battery mounted on it.
    Examples of the electrically powered vehicle include a vehicle
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    9/29 electric, a hybrid vehicle, a fuel cell vehicle, and the like. A vehicle that travels using only the driving force generated in an internal combustion engine can also be used as a vehicle 100. However, in the present modality, an electrically driven vehicle with a relatively small amount of atmospheric pollutant release (hereinafter also referred to as an environmental pollutant) is preferably used from the perspective of improving the environment.
    [0044] Vehicle 100 includes a sensor unit 110 configured to detect a concentration of a particulate material such as pollen or PM2.5 or a gaseous air pollutant such as sulfur oxide (SOx) or nitrogen oxide (NOx). Vehicle 100 also includes an environmental enhancement device 120, such as an air filter or a bag filter configured to remove pollutant from the air.
    [0045] The server 200 obtains, through the communication network 300, the concentration of the environmental pollutant detected by the sensor unit 110 mounted on the vehicle 100 or a sensor 400 fixed on the side of the road or similar, and calculates a level of pollution in an area prescribed. When the calculated pollution level worsens and exceeds a prescribed threshold value, server 200 causes vehicles 100 located in the area or in a nearby area to move into the area and operate environmental improvement devices 120 mounted on vehicles 100. As a result, the environmental pollutant in the area that has a high level of pollution is removed and the environment is improved.
    (VEHICLE AND SERVER CONFIGURATION) [0046] Fig. 2 is a block diagram to illustrate details of vehicle 100 and server 200 in Fig. 1. Referring to Fig. 2, in addition to the sensor unit 110 configured to detect the environmental pollutant and environmental improvement device 120 configured to remove the environmental pollutant, vehicle 100 also includes a controller
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    130, a storage unit 140, a position detection unit 150, a communication unit 160, an input unit 170 and an automated driving control unit 180. [0047] Communication unit 160 is a communication interface between vehicle 100 and communication network 300. Vehicle 100 communicates wirelessly with communication network 300 through communication unit 160 and receives and transmits information to and from server 200. Vehicle 100 can also communicate from vehicle to vehicle with another vehicle via communication unit 160.
    [0048] Although not shown, controller 130 includes a CPU (Central Processing Unit), a storage device such as a memory and an input / output accumulator and provides comprehensive control of vehicle 100. Controller 130 receives a command from the server 200 via communication unit 160. Upon receiving a command to move vehicle 100 from server 200, controller 130 causes automated driving control unit 180 to automatically drive vehicle 100, thereby driving the vehicle 100 to a position specified by the server 200. Controller 130 also controls the start or stop of the environmental enhancement device 120 based on a command from the server 200.
    [0049] The storage unit 140 is configured to include a recording device such as, for example, a non-volatile memory or an HDD (Hard Disc Drive - hard disk). Storage unit 140 stores a command received from server 200 and stores a parameter and the like set through a user.
    [0050] The position detection unit 150 is included, for example, in a navigation device (not shown), and obtains
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    11/29 absolute position information of the vehicle itself 100 using GPS (Global Positioning System). The position detection unit 150 outputs the obtained position information to the server 200.
    [0051] Input unit 170 is formed by a touch panel, a switch or the like and is included, for example, in the navigation device described above. The user can adjust the parameter and the like by operating the input unit 170.
    [0052] The server 200 includes a control unit 210, a storage unit 220, a communication unit 230 and a monitor 240. The control unit 210 includes a pollution level determination unit211, a mapping unit 212, a vehicle selection unit 213, and a command output unit 214.
    [0053] Communication unit 230 is a communication interface between server 200 and communication network 300. Server 200 obtains information from vehicle 100 through communication unit 230 and generates the motion command and the command to operate the environmental improvement device 120 for vehicle 100.
    [0054] Storage unit 220 stores content of vehicle information received through communication unit 230. Storage unit 220 also pre-stores map information for a region where the environment improvement operation is to be performed.
    [0055] The pollution level determination unit 211 included in control unit 210 calculates a pollution level for each predetermined area, using the concentration of the environmental pollutant included in the vehicle information transmitted from each vehicle
    100 and determines the need for the environment improvement operation.
    Map creation unit 212 associates the calculated pollution level
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    12/29 by the pollution level determination unit 211 with the map information stored in the storage unit 220, and creates a pollution map. The pollution map created is displayed on the display 240, just like a liquid crystal display panel, so that a server administrator and the like can visually recognize a state of environmental pollution.
    [0056] For a target area determined as an environment improvement operation, vehicle selection unit 213 selects vehicles to perform the environment improvement operation in the target area, from vehicles 100 located in the target area or in an area close to it. The command output unit 214 generates a command to perform the environmental improvement operation and sends the command to the selected vehicles 100.
    [0057] In the present modality, as described above, the state of pollution by the environmental pollutant is detected for each area based on the information obtained. From the sensor mounted on the vehicle or the fixed sensor, and vehicles that have the environmental improvement devices mounted on them are moved to the area that has a high level of pollution, thereby removing the environmental pollutant. With this configuration, the level of pollution in the area can be reduced and the state of environmental pollution can be improved.
    [0058] In the system in which the communication is carried out between the server 200 and the plurality of vehicles 100, such as the environment improvement system 10 according to the present modality, if the number of vehicles 100 in communication with the server 200 is relatively small, server 200 can perform appropriate control even when server 200 communicates with each vehicle 100 individually. However, if a range of a region covered by the server 200 becomes wider and the number of vehicles 100 to be controlled increases, a load on the server 200
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    13/29 increases, which can cause a reduction in control speed and the like.
    [0059] Thus, in the present modality, a method is adopted to suppress an increase in load on the server 200, using different communication modes, depending on the communication load between the server 200 and vehicles 100. Two communication modes in the present embodiment will be described below with reference to Figs. 3 and 4.
    (DESCRIPTION OF COMMUNICATION MODES) [0060] Fig. 3 is a diagram to illustrate an overview of communication in a first communication mode (hereinafter also referred to as mode I), which is used when the number of vehicles 100 to be is relatively small (that is, when the load on the server 200 is low). Referring to Fig. 3, in mode I, server 200 communicates with each vehicle 100 individually. In mode I, server 200 obtains information directly from each vehicle 100, and thus mode I has the advantage that server 200 can monitor the entire system in real time.
    [0061] Fig. 4 is a diagram to illustrate an overview of communication in a second mode of communication (hereinafter also referred to as mode II), which is used when the number of vehicles 100 to be controlled is large (that is, when the load on the server 200 is high). In mode II, the server 200 communicates with only a part (hereinafter also referred to as the representative vehicle) of the plurality of vehicles 100, and the other vehicles obtain information from the server 200 by vehicle-to-vehicle communication with the representative vehicle.
    [0062] In the example of the environmental improvement system 10 according to the present modality, the representative vehicle is adjusted for each area where the level of pollution is determined. For example,
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    14/29 as in Fig. 4, a vehicle 100A-1 is selected as a representative vehicle in area A, a vehicle 100B-1 is selected as a representative vehicle in area B, and a vehicle 100C-1 is selected as a representative vehicle in an area C.
    [0063] In area A, vehicles (vehicles 100A-2 and 100A-3), different from the representative vehicle 100A-1, obtain a command from the server 200 by vehicle-to-vehicle communication with the representative vehicle 100A-1. In addition, the operating condition (vehicle information) of vehicles in the same area is shared between vehicles and vehicle information for vehicles in the area is transmitted collectively to server 200 by representative vehicle 100A-1. The sharing of information by vehicle-to-vehicle communication in the area is implemented using blockchain authentication.
    [0064] Likewise, also in areas B and C, representative vehicles 100B-1 and 100C-1 communicate with server 200, and information is shared among other vehicles by vehicle-to-vehicle communication in the respective areas.
    [0065] When performing communication in mode II as described above, only representative vehicles 100A-1, 100B-1 and 100C-1 communicate with server 200 and, thus, the load on server 200 can be reduced in comparison with the case of individual communication with each vehicle. However, in mode II, monitoring the operating condition of each vehicle in real time is difficult due to the distributed communication caused by the hierarchical structure. (Description of control content) [0066] Fig. 5 is a flow chart to illustrate the switching control of the communication mode performed on server 200. The flow charts shown in Fig. 5 and described below Figs. 10 to 12 and 14 are implemented by invoking a program stored in controller 130 of vehicle 100 or control unit 210 of the server
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    15/29
    200 from a main routine and executing the program when a prescribed cycle or a prescribed condition is satisfied. Alternatively, processing in part or all of the flowchart steps can be implemented by dedicated hardware (electronic circuit).
    [0067] Referring to Fig. 5, in step (hereinafter abbreviated as S) 10, server 200 obtains vehicle information from vehicles 100 located in a target region, and recognizes the number of vehicles 100 to be controlled based on in the vehicle information obtained. Then, at S20, server 200 determines whether the number of vehicles in the region is less than the reference number α. The reference number α is determined according to a communication load that can be handled by the server 200.
    [0068] When the number of vehicles 100 is less than the reference number α (YES in S20), the process proceeds to S30 and the server 200 selects mode I as a communication mode. On the other hand, when the number of vehicles 100 is greater than the reference number α (NOT in S20), the process proceeds to S40 and the server 200 selects mode II as a communication mode.
    [0069] Thereafter, at S50, the server 200 notifies each vehicle 100 of the selected communication mode.
    [0070] In the flowchart of Fig. 5, the communication mode is selected using the number of all vehicles included in the entire region covered by server 200. Instead, the communication mode can be selected according to the number of vehicles that effectively perform the environmental improvement operation by operating the environmental improvement devices 120.
    (DESCRIPTION OF MODE I) [0071] Next, details of control in each communication mode will be described. First, mode I will be described.
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    16/29 [0072] Fig. 6 shows an example of the content of vehicle information transmitted from vehicle 100 to server 200. Vehicle information transmitted from each vehicle includes a vehicle identification to identify the vehicle itself , a transmission date, vehicle position information, the concentration of the environmental pollutant detected by the sensor unit 110, a period of time during which the environmental improvement operation can be carried out (available time period) and information on the possibility of movement according to the command from server 200 (movement possible).
    [0073] As for a coordinate indicated by the vehicle's position information (X, Y, Z) in Fig. 6, X represents a longitude, Y represents a latitude and Z represents an altitude, for example. Information about a vehicle's direction of travel (orientation) can be included as vehicle position information.
    [0074] The available time period is a parameter that can be arbitrarily set by the user through the input unit 170. The user defines a period of time for which the use of the vehicle is allowed for the environment improvement operation during a period of time when the vehicle is not used. Server 200 refers to the period of time available and selects a vehicle used for the environment improvement operation. The environment improvement operation is carried out within the available time interval defined by the user, which makes it possible to contribute to the improvement of the environment while satisfying the user's needs.
    [0075] The possible movement information is information that indicates whether or not the vehicle can be moved to a specific area when the vehicle is used for the environment improvement operation.
    For example, when the target vehicle is placed in a home garage and a garage door is closed (locked), the vehicle
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    17/29 cannot be moved from the garage to a specified location, although the room enhancement device can be used in the garage. The server 200 refers to the possible movement information and selects the target vehicle.
    [0076] When server 200 obtains the vehicle information shown in Fig. 6 from vehicles 100, server 200 calculates the level of pollution for each area specified on the map, using vehicle position information and information about the concentration of the environmental pollutant. For example, server 200 may use a maximum value for concentrations of the environmental pollutant transmitted from vehicles 100 located in the same area, such as the level of pollution in the area. Alternatively, server 200 can use an average value of the concentrations of the environmental pollutant in the area as the level of pollution.
    [0077] Based on the calculated pollution level, server 200 creates a map of the pollution level shown in Fig. 7 and displays the map on display 240 of server 200. In the example in Fig. 7, a region displayed on display 240 it is divided into eight rectangular areas, that is, area A to area H, and the level of pollution is displayed for each area. The configuration of the area is not limited to the rectangular areas shown in Fig. 7, and can be, for example, administrative sections such as cities, or they can be sections determined by main roads.
    [0078] Based on the fact that the calculated level of pollution exceeds or not a predetermined threshold value for each area, server 200 determines the need to improve the environment in the area. Fig. 8 shows an example of determining the need for improving the environment and selecting vehicles that are run by server 200. In the example in Fig. 8, a threshold level of pollution level to determine the need for improving the environment is, for example, example, 100 ppm, and it is determined that improving the environment is necessary in
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    18/29 areas B, D, E and G, where their pollution levels exceed the threshold value. Of the vehicles 100 located in the region, the server 200 selects the vehicles that perform the operation to improve the environment in each area. The server 200 determines the vehicles 100 to be selected, considering the type of environmental pollutant that should be removed and the type of environmental pollutant that can be removed by the environmental improvement device mounted on each vehicle 100. In addition, the time period available varies from vehicle 100 to vehicle 100, and so when a portion of the initially selected vehicles becomes unavailable, server 200 selects yet another vehicle located in or near the target area, rather than the unavailable vehicle.
    [0079] When the area where the environmental improvement is performed and the vehicles 100 used for this are determined, the server 200 generates a control command shown in Fig. 9 and issues the control command for each vehicle 100. More specifically, the server 200 transmits information about the area where the environment improvement is performed, initial information of the movement position and information about a way of operating in the area for each selected vehicle 100. The initial information of the movement position is information that indicates a position where the vehicle is initially placed. Each vehicle 100 moves to the position indicated by the initial movement position information from the server 200 by automated actuation and then performs the environment improvement operation based on the area information and information on the mode of operation.
    [0080] In Fig. 9, when the operating mode is to stop, the vehicle
    100 moves to the initial movement position and then operates the room improvement device 120, with vehicle 100 being at a stop in that position. On the other hand, when the way of
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    19/29 operation is travel, vehicle 100 moves to the starting position and then travels autonomously in the specified area while operating the environmental improvement device 120. For example, in a location that has a particularly high concentration of the environmental pollutant in the area, the environmental improvement operation can be performed, with a private vehicle being at a stop. The form of operation is preferably changed according to the distribution of the pollution state (concentration) by the environmental pollutant.
    [0081] During the execution of the environmental improvement operation, each selected vehicle 100 transmits the vehicle information shown in Fig. 6 to the server 200 at prescribed time intervals. The server 200 monitors a change in the level of pollution caused by performing the environmental improvement operation and repeatedly performs the operation described above. Then, when the level of pollution in the specified area is improved and falls below the threshold value, server 200 sends a command to stop the environmental improvement device 120 for each vehicle 100 that is performing the environmental improvement operation in the area.
    [0082] Figs. 10 and 11 are flow charts to illustrate control details performed on vehicle 100 and server 200 in mode I. The flow charts shown in Figs. 10 and 11 are implemented by invoking programs stored in controller 130 of vehicle 100 and control unit 210 of server 200 from a main routine and executing the programs when a prescribed cycle or prescribed condition is satisfied. Alternatively, processing in part or all of the flowchart steps can be implemented by dedicated hardware (electronic circuit).
    [0083] Referring to Fig. 10, in S100, vehicle 100 obtains pollution data that includes the concentration of the environmental pollutant
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    20/29 in the current position of vehicle 100, using sensor unit 110. Then, in S110, in addition to the pollution data obtained in S100, vehicle 100 transmits the vehicle information that includes the other information shown in Fig. 6 to the server 200. When a plurality of types of environmental pollutants are detected, individual concentration data for each environmental pollutant can be included.
    [0084] When vehicle 100 receives the command shown in Fig. 9 from server 200, vehicle 100 determines in S120 whether or not vehicle 100 itself was selected as a target vehicle to perform the environment improvement operation. When vehicle 100 has not been selected as the target vehicle (NOT in S120), vehicle 100 skips the next steps and returns the process to the main routine.
    [0085] On the other hand, when vehicle100 has been selected as the target vehicle (YES in S120), the process proceeds to S130 and vehicle 100 moves to the specified area by automated activation according to the movement command transmitted from from server 200. When vehicle 100 is, for example, a vehicle owned by a business operator specializing in improving the environment, automated driving is not necessarily necessary, and a driver from the business operator can drive vehicle 100 into the area specified in a manned manner according to the command from server 200. Although not shown in Fig. 10, when vehicle 100 is selected as the target vehicle by server 200, vehicle 100 notifies the user that vehicle 100 has been selected as the target vehicle, using an email or similar.
    [0086] When movement to the initial movement position specified by server 200 is completed, vehicle 100 transmits movement completion information to server 200 at S140.
    When vehicle 100 receives the command to operate the environment improvement device 120 from server 200 in response (YES in
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    S150), vehicle 100 operates environment enhancement device 120 and maintains the state of being at a stop in position or travels in the area according to the specified mode of operation S160. When vehicle 100 does not receive the command to operate the environment enhancement device 120 from server 200 (NOT on S150), vehicle 100 moves the process to S170, the environment enhancement device 120 being at a stop.
    [0087] In S170, vehicle 100 determines whether or not the command to stop the environmental enhancement device 120 was received from server 200. When the stop command was received from server 200 with the environmental enhancement device environment 120 being in operation (SEM in S170), vehicle 100 for environment improvement device 120 S180 and returns the process to the main routine. On the other hand, when the stop command was not received from the server 200 with the environmental improvement device 120 in operation (NOT in S170), the vehicle 100 maintains the operation of the environmental improvement device 120 and returns the process to the main routine. When the room improvement device 120 is still in a stop, the stop state of the room improvement device 120 is maintained regardless of receipt of the stop command.
    [0088] The previous description of S150 refers to the initial state, with the environment improvement device 120 being at a standstill. However, when the process in Fig. 10 is started with the room improvement device 120 being in operation, the operation of the room improvement device 120 is maintained, regardless of whether the determination in S150 is YES or NO.
    [0089] Next, the process on server 200 will be described with reference to Fig. 11. When server 200 obtains vehicle information from each vehicle 100 in S200, server 200 calculates the
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    22/29 pollution level for each specified area, using information on the concentration of the environmental pollutant included in the vehicle information of vehicles located in area S210, and creates a pollution map of the entire region, including area S220. Processing in S230 and subsequent steps (processing in an interrupted line box SA in Fig. 11) are performed for each specified area.
    [0090] In S230, server 200 determines whether the level of pollution in the specified area exceeds or not the predetermined threshold value. When the pollution level is equal to or less than the threshold value (NOT in S230), server 200 determines that the environment improvement operation is unnecessary and moves the process to S280. In S280, when each room improvement device 120 is in a stop, the stop state is maintained. When each room improvement device 120 is in operation, each room improvement device 120 is stopped and the process is returned to the main routine.
    [0091] On the other hand, when the pollution level is higher than the threshold value (YES in S230), server 200 determines that the environment improvement operation is necessary. Then, in S240, the server 200 selects execution vehicles that perform the environment improvement operation in the area, based on the position information of each vehicle 100, the information on the available time period and the like obtained as vehicle information. and transmit the selection information to the vehicles in the area. In S250, the server 200 sends the motion command to the selected vehicles 100. The transmission of the selection information of the executing vehicles and the transmission of the motion command to the vehicles 100 can be performed at different intervals as shown in Fig. 11 Alternatively, however, the selection information and the motion command can be included in the same command and transmitted in the
    Petition 870180141626, of 10/17/2018, p. 36/132
    23/29 same moment.
    [0092] Then, in S260, server 200 determines whether or not all vehicles selected for the specified area have been moved to the initial movement positions defined respectively. When the server 200 does not receive the end of movement information from each vehicle 100 (NOT in S260), the process is returned to S260 and the server 200 waits for the completion of the movement of the execution vehicles.
    [0093] On the other hand, when the server 200 receives the movement completion information from each vehicle 100 and recognizes that the movement of each vehicle to the defined initial movement position has been completed (YES in S260), the server 200 sends the operating command to activate the environmental improvement device 120 for each vehicle running on S270, causing each vehicle100 to perform the environmental improvement operation. Then, the process is returned to the main routine.
    [0094] As described above, processing in the interrupted line box SA in Fig. 11 is performed for each area, and the environment improvement operation using vehicles 100 is continued until the level of pollution in each area becomes equal to or lower than the prescribed threshold value. As a result, it is possible to reduce the environmental pollutant in the specified area and perform the environmental improvement using 100 vehicles, including environmental improvement devices 120.
    (DESCRIPTION OF MODE II) [0095] When mode II is selected as a communication mode, the content of the control varies depending on whether the vehicle itself is a representative vehicle or not. The vehicle selected as the representative vehicle receives a control command that includes a command for the other vehicles in the area from server 200 and transmits the command to each of the other vehicles using
    Petition 870180141626, of 10/17/2018, p. 37/132
    24/29 vehicle to vehicle communication. In addition, the representative vehicle collects data shared between vehicles in the area and transmits the data to server 200.
    [0096] Fig. 12 shows an example of the control command transmitted to the representative vehicle by server 200. Although the control command in Fig. 12 is similar to the control command in mode I shown in Fig. 9, the first is different the last one in which the control command in Fig. 12 is a command for each area to which the representative vehicle of destination belongs, and a command is added on whether or not the vehicle itself is a representative vehicle. For example, in the example in Fig. 12, four vehicles are selected as target vehicles to perform the environmental improvement operation in area A, and a vehicle with vehicle ID A1234, of the four vehicles, is selected as a representative vehicle. The control command is transmitted from the server 200 to the vehicle with vehicle ID A1234. The vehicle with vehicle ID A1234 and having received the control command from server 200 recognizes that the vehicle itself is a representative vehicle and transmits the control command to the other three vehicles (vehicles with IDs D5123, F8546 and G5564) using the vehicle to vehicle communication. Similar to the description of mode I, the representative vehicle and the other three vehicles move to the initial movement positions included in the control command and then perform the environment improvement operation according to the mode of operation.
    [0097] In mode II, the data (such as, for example, the position information of each vehicle and the detected concentration of the environmental pollutant) of ownership of each vehicle are shared between vehicles by vehicle to vehicle communication. The representative vehicle aggregates information about each vehicle in the area and periodically transmits the information to server 200 as
    Petition 870180141626, of 10/17/2018, p. 38/132
    25/29 area information. By using blockchain authentication to share data between vehicles, the reliability and robustness of the data can be maintained.
    [0098] As the available time period is defined for each vehicle, the available time period can be exceeded during the execution of the environment improvement operation. In such a case, information about the unavailable vehicle is transmitted from the representative vehicle to the server 200 and, in response, the server 200 again selects a vehicle that performs the environmental improvement operation, based on the state of environmental pollution. at this time. When the execution vehicle is added and / or changed, a new control command is provided from the server 200 for the representative vehicle. When the representative vehicle is changed, server 200 selects another vehicle as a representative vehicle and transmits the control command to the newly selected representative vehicle.
    [0099] Fig. 13 is a flow chart to illustrate the detailed control process performed on server 200 and vehicles 100 in mode II. [00100] First, control of server 200 will be described. When each vehicle 100 is notified from server 200 that mode II has been selected as a communication mode according to the control shown in Fig. 5, vehicle information is transmitted from each vehicle in the region covered by server 200 for the 200 S400 and S500 server. At this time, it is not yet determined which vehicle should be selected as a target vehicle to perform the environmental improvement operation and which vehicle should be selected as a representative vehicle.
    [00101] When server 200 obtains vehicle information from each vehicle 100 in S300, server 200 calculates the level of pollution in each area based on the concentration of the pollutant
    Petition 870180141626, of 10/17/2018, p. 39/132
    26/29 included in the vehicle information S310 and creates the map shown in Fig. 7 S320. Then, in S330, server 200 selects a target area where the environmental improvement operation is performed, comparing the calculated pollution level and the threshold value. In S340, server 200 selects execution vehicles that perform the environmental improvement operation in the target area. In S340, together with the selection of the execution vehicles, a representative vehicle is selected from the execution vehicles. Then, in S350, server 200 transmits the control command shown in Fig. 12 to the representative vehicle selected.
    [00102] When the environment improvement operation is initiated in each area, the server 200 periodically obtains, from the representative vehicle in each area, the area information that includes the position information of each vehicle in the area and the information about a change in the concentration of the environmental pollutant S360. Then, in S370, server 200 determines whether the level of pollution in the target area has been improved to be equal to or less than the prescribed threshold value, based on information from the area.
    [00103] When the pollution level has been improved (YES in S370), the process continues to S380 and the server 200 transmits the command to stop the environment improvement operation to the target area to the representative vehicle. On the other hand, when the level of pollution has not yet been improved (NOT in S370), the process is returned to S360 and server 200 continues the environment improvement operation in the target area. Although not shown in Fig. 13, when the execution vehicles need to be changed in the target area during the execution of the environment improvement operation, the server 200 again performs the selection of a vehicle that perform the environment improvement operation as necessary, and generates an altered control command for each vehicle through the representative vehicle.
    Petition 870180141626, of 10/17/2018, p. 40/132
    27/29
    On server 200, this control is performed for each target area. [00104] Next, the control of the vehicle selected as the representative vehicle will be described. As described above, after receiving notification that mode II has been selected as a communication mode from server 200, each vehicle 100 first transmits its own vehicle information to server 200 S400. When the environment improvement operation and the representative vehicle are selected by server 200 and the control command (Fig. 12) is received from server 200 S410, the vehicle that received the control command recognizes that the vehicle itself is selected as a representative vehicle. Then, in S420, the representative vehicle transmits the control command transmitted from server 200 to the other vehicles using vehicle-to-vehicle communication. The transmission of the control command from the representative vehicle to the other vehicles can be implemented by one-to-one communication (P2P communication).
    [00105] Then, according to the command for the vehicle itself included in the control command, the representative vehicle moves to the initial movement position in the target area S430 and operates the environment improvement device 120 to start the improvement operation. of the S440 environment. During the execution of the environmental improvement operation, the representative vehicle shares vehicle data in the area using S450 vehicle-to-vehicle communication. At this time, the representative vehicle edits vehicle data as appropriate to generate area information and transmits area information to server 200 at prescribed time intervals. Area information also includes information on whether or not a change to the execution vehicles is necessary.
    [00106] As described above, server 200 monitors a state of improvement in the level of pollution in the target area, based on information from the
    Petition 870180141626, of 10/17/2018, p. 41/132
    28/29 area, and determines whether or not to continue the environment improvement operation. In S470, the representative vehicle determines whether the command to stop the environment improvement operation was received from server 200. When the stop command was not received (NOT in S470), the process is returned to S450 and the operation of improvement of the environment continues. On the other hand, when the stop command was received (YES in S470), the process proceeds to S480, and the representative vehicle to its own environment improvement device 120 and transmits the command to interrupt the environment improvement operation to the other vehicles in the target area using vehicle-to-vehicle communication.
    [00107] Next, the control of vehicles in addition to the representative vehicle will be described. When each vehicle 100 receives notification that mode II has been selected as a communication mode from the server 200, each vehicle 100 first transmits its own vehicle information to the server 200 S500. Then, when vehicle 100 receives the control command from the representative vehicle using vehicle-to-vehicle communication S510, vehicle 100 recognizes that vehicle 100 itself has been selected as a vehicle that performs the environment improvement operation. Then, according to the control command, the vehicle 100 moves to the initial movement position in the target area S520 and operates the environment improvement device 120 to start the environment improvement operation S530.
    [00108] During the execution of the environmental improvement operation, vehicle 100 shares the data of each vehicle in the area using S540 vehicle-to-vehicle communication. Then, in S550, vehicle 100 determines whether or not the command to stop the environmental improvement operation was received from the representative vehicle.
    When the stop command has not been received (NOT at S550), the
    Petition 870180141626, of 10/17/2018, p. 42/132
    29/29 process is returned to S540 and the environment improvement operation is continued. On the other hand, when the stop command has been received (YES on S550), the process continues for S560 and vehicle 100 for its own environment improvement device 120 and for the environment improvement operation.
    [00109] As described above, when the number of vehicles communicating with the server is large and the individual communication between the server and each vehicle increases the load on the server, the mode II communication mode is used in which the communication it is distributed using the representative vehicle and data is shared between vehicles by vehicle to vehicle communication. As a result, the communication load between the server and the vehicles can be reduced and appropriate communication can be performed.
    [00110] Although the modality of the present disclosure has been described, it should be understood that the modality described here is illustrative and not restrictive in all aspects. The scope of this disclosure is defined by the terms of the claims and is intended to include any changes to the scope and meaning equivalent to the terms of the claims.
    权利要求:
    Claims (4)
    [1]
    1. Vehicle information communication system characterized by the fact that it comprises:
    a plurality of vehicles (100); and a server (200) configured to communicate with the plurality of vehicles (100) using either a first mode of communication or a second mode of communication, the first mode of communication being a mode of communication in which the server (200) receives and transmits information to and from each of the plurality of vehicles (100) individually, the second mode of communication being a mode of communication in which the server (200) receives and transmits the information to and from a part of the plurality of vehicles (100) and information is shared between the plurality of vehicles (100) using vehicle-to-vehicle communication.
    [2]
    2/4 of pollution by an environmental pollutant;
    a plurality of vehicles (100) on each of which an environmental improvement device (120) configured to remove the environmental pollutant is mounted; and a server (200) configured to communicate with the plurality of vehicles (100) using either a first mode of communication or a second mode of communication, the first mode of communication being a mode of communication in which the server (200) receives and transmits information to and from each of the plurality of vehicles (100) individually, the second mode of communication being a mode of communication in which the server (200) receives and transmits the information to and from a part of the plurality of vehicles (100) and information is shared between the plurality of vehicles (100) using vehicle-to-vehicle communication, when a level of pollution by the environmental pollutant exceeds a reference value in an area where the sensor (110, 400) is located , the server (200) being configured to cause a vehicle selected from the plurality of vehicles (100) to move to the area and configured to send a command to execute a the environment improvement operation using the environment improvement device (120).
    5. Environment improvement system according to claim 4, characterized in that the server (200) is configured to perform communication in the first communication mode when the number of vehicles (100) selected to perform the environment improvement operation is less than the reference number and perform communication in the second communication mode when the number is greater than the number of
    Petition 870180141626, of 10/17/2018, p. 45/132
    2. Vehicle information communication system according to claim 1, characterized in that the server (200) is configured to perform communication in the first communication mode when a communication load between the server (200) and the plurality of vehicles (100) is less than a threshold value, and carry out communication in the second communication mode when the communication load is greater than the threshold value.
    [3]
    3/4 reference.
    6. Environment improvement system according to claim 4 or 5, characterized in that the sensor (110) is provided in each of the plurality of vehicles.
    7. Environment improvement system according to claim 6, characterized in that the server (200) is configured to calculate the pollution level for each predetermined area, using position information from the plurality of vehicles (100) and information about the pollution state detected by the sensor (110).
    8. Environment improvement system according to claim 7, characterized by the fact that when the server (200) communicates in the second communication mode, the server (200) is configured to determine, for each area, a representative vehicle ( 100A-1, 100B1, 100C-1) to communicate with the server (200), and during communication in the second communication mode, the representative vehicle (100A-1, 100B-1, 100C-1) transmits the information from from the server (200) to the other vehicles in the area by vehicle to vehicle communication, and transmit the information shared between the vehicles in the area to the server (200).
    9. Server (200) configured to communicate with a plurality of vehicles (100), characterized by the fact that the server (200) is configured to communicate with a plurality of vehicles (100) using either a first communication mode or a second mode of communication, the first mode of communication being a mode of communication in which the server (200) receives and transmits information to and from each of the plurality of vehicles (100) individually,
    Petition 870180141626, of 10/17/2018, p. 46/132
    3. Vehicle information communication system according to claim 1 or 2, characterized by the fact that in the second mode of communication, the plurality of vehicles (100) will share information using blockchain authentication.
    4. Environment improvement system characterized by the fact that it comprises:
    a sensor (110, 400) configured to detect a state
    Petition 870180141626, of 10/17/2018, p. 44/132
    [4]
    4/4 the second communication mode being a communication mode in which the server (200) receives and transmits information to and from a part of the plurality of vehicles (100) and the information is shared between the plurality of vehicles ( 100) using vehicle-to-vehicle communication.
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    法律状态:
    2019-06-04| B03A| Publication of a patent application or of a certificate of addition of invention [chapter 3.1 patent gazette]|
    优先权:
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    JP2017218408A|JP2019091168A|2017-11-13|2017-11-13|Vehicle information communication system, environment improvement system, and server to be used therefor|
    JP2017-218408|2017-11-13|
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