WO2013098988A1 - センター側システム及び車両側システム - Google Patents
センター側システム及び車両側システム Download PDFInfo
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- WO2013098988A1 WO2013098988A1 PCT/JP2011/080387 JP2011080387W WO2013098988A1 WO 2013098988 A1 WO2013098988 A1 WO 2013098988A1 JP 2011080387 W JP2011080387 W JP 2011080387W WO 2013098988 A1 WO2013098988 A1 WO 2013098988A1
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- vehicle
- information
- probe
- speed
- side system
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
- G08G1/0108—Measuring and analyzing of parameters relative to traffic conditions based on the source of data
- G08G1/0112—Measuring and analyzing of parameters relative to traffic conditions based on the source of data from the vehicle, e.g. floating car data [FCD]
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
- G08G1/0125—Traffic data processing
- G08G1/0133—Traffic data processing for classifying traffic situation
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
- G08G1/0137—Measuring and analyzing of parameters relative to traffic conditions for specific applications
- G08G1/0141—Measuring and analyzing of parameters relative to traffic conditions for specific applications for traffic information dissemination
Definitions
- the present invention relates to a center side system and a vehicle side system in a probe information system.
- a probe vehicle that acquires and uploads traffic information on the road on which it is currently traveling, and a center-side system that transmits (distributes) traffic conditions including traffic jam information to each vehicle based on the traffic information (for example, providing traffic conditions) System) is proposed.
- each vehicle that has received the traffic situation from the center side system can search for an appropriate route based on the traffic jam information included in the vehicle, and can arrive at the destination in a short time. It becomes possible.
- vehicles such as cars and telematics service compatible vehicles, buses and taxis are applied as probe vehicles, but it is predicted that they will be applied to general vehicles in the future.
- the traffic information (probe information) acquired by the probe vehicle may be inaccurate or inappropriate.
- traveling on the searched route may take more time to reach the destination or the like than traveling on another route. May not be able to travel on a difficult route.
- Patent Document 1 discloses a technique for optimizing probe information without using probe information indicating abnormal operation such as abnormal stopping.
- various techniques associated therewith have been proposed.
- Patent Literature 2 discloses a technique for collecting driving history information of a driver.
- JP 2009-9298 A Japanese Unexamined Patent Publication No. 2000-075647
- the probe vehicle of the conventional probe information system as described in Patent Document 1 and Patent Document 2 has a function of traveling with priority given to suppressing power consumption over traveling at high speed.
- vehicles such as hybrid vehicles (HEV), plug-in hybrid vehicles (PHEV), electric vehicles (EV), and the like are included.
- HEV hybrid vehicles
- PHEV plug-in hybrid vehicles
- EV electric vehicles
- the speed is obtained from a vehicle whose function is turned on and the speed is distributed to each vehicle as it is, the road is actually free and the vehicle can travel at a high speed, but the speed is not high. May deliver speed. As a result, it may not be possible to travel on an appropriate route.
- the present invention has been made in view of the above-described problems, and an object thereof is to provide a technique capable of improving the reliability of the probe information system.
- the center-side system is a center-side system in a probe information system that receives traffic information from a vehicle-side system mounted on a probe vehicle, and is vehicle position information that is information related to the position of the probe vehicle. And a receiving unit that receives drive type information that is information related to the drive type of the probe vehicle and vehicle speed information that is information related to the speed of the probe vehicle from the vehicle-side system.
- the center-side system is a drive type that is a travelable speed for each drive type of the vehicle on each road based on the vehicle position information, the drive type information, and the vehicle speed information received by the receiving unit.
- a traffic situation estimation unit that estimates a traffic situation including a travelable speed, a transmission unit that transmits the traffic situation estimated by the traffic situation estimation unit to the outside, or the traffic situation can be browsed by external access And a browsing unit.
- each vehicle can acquire the drive-type travelable speed, it is possible to improve the reliability of the estimated travelable speed, and hence the reliability of the probe information system.
- FIG. 1 is a block diagram showing a configuration of a probe information system according to Embodiment 1.
- FIG. It is a figure which shows the probe information produced
- 4 is a flowchart showing processing of the vehicle side system according to the first embodiment. 4 is a flowchart showing processing of the center side system according to the first embodiment. 4 is a flowchart showing processing of the center side system according to the first embodiment. 10 is a flowchart showing processing of the center side system according to the first modification of the first embodiment.
- 10 is a flowchart showing processing of a center side system according to a second modification of the first embodiment.
- 10 is a flowchart showing processing of the center side system according to the third modification of the first embodiment.
- 10 is a flowchart showing processing of the center side system according to the second embodiment.
- It is a figure which shows the drive classification vehicle number which concerns on Embodiment 2.
- FIG. It is a figure which shows the drive classification vehicle number which concerns on Embodiment 2.
- FIG. It is a figure which shows the structure of a related probe information system.
- It is a block diagram which shows the structure of the probe information system which concerns on the modification of Embodiment 2.
- It is a figure which shows the drive classification vehicle number which concerns on the modification of Embodiment 2.
- FIG. It is a block diagram which shows the structure of the probe information system which concerns on Embodiment 3.
- FIG. It is a figure which shows the display which the vehicle side system which concerns on Embodiment 3 performs. It is a figure which shows the display which the vehicle side system which concerns on Embodiment 3 performs.
- FIG. 1 is a block diagram showing a configuration of a probe information system including a vehicle side system 101 and a center side system 201 according to Embodiment 1 of the present invention.
- the vehicle-side system 101 is mounted on the probe vehicle 151 and uploads traffic information (hereinafter also referred to as “probe information”) of the road on which the probe vehicle 151 is traveling to the center-side system 201.
- the center-side system 201 receives traffic information uploaded from the vehicle-side system 101, and transmits the traffic situation estimated based on the traffic information (probe information) to the outside (each vehicle). It is assumed that the probe information is uploaded via the communication network 200 (Internet, wireless communication, etc.).
- the probe vehicle 151 will be described as one of an engine vehicle using only gasoline, a hybrid vehicle (HEV), a plug-in hybrid vehicle (PHEV), and an electric vehicle (EV) using a motor.
- HEV hybrid vehicle
- PHEV plug-in hybrid vehicle
- EV electric vehicle
- PHEV HEV
- EV is a consumption-suppressing travel mode (for example, a plan) that can travel with priority given to suppressing the consumption of electric power (energy) rather than traveling at a high speed. It is assumed that the vehicle is a consumption-suppressable travelable vehicle having a travel mode.
- working which suppresses consumption is implement
- the vehicle-side system 101 includes a vehicle control unit 104 that controls the probe vehicle 151 mainly based on a driver's operation, a probe information terminal 105 that handles probe information, and a control system-information system interface 106 that connects them.
- a vehicle control unit 104 that controls the probe vehicle 151 mainly based on a driver's operation
- a probe information terminal 105 that handles probe information
- a control system-information system interface 106 that connects them.
- the probe information terminal 105 is a car navigation device
- the control system-information system interface 106 is a wired communication device.
- the vehicle control unit 104 includes a vehicle information storage unit 111, a travel system / body system control unit 112, and a power unit 113 which is a drive source for causing the probe vehicle 151 to travel.
- the vehicle information storage unit 111 and the traveling system / body system control unit 112 can input and output various types of information via the in-vehicle LAN 114.
- the in-vehicle LAN 114 and the probe information terminal 105 (here, the control unit 128) can communicate various information via the control system-information system interface 106.
- the vehicle information storage unit 111 stores substantially unchanged vehicle information regarding the probe vehicle 151.
- the vehicle information stored in the vehicle information storage unit 111 may be referred to as “stored vehicle information”.
- the vehicle information storage unit 111 is information relating to the drive type of the power unit 113 (drive source) of the probe vehicle 151 as stored vehicle information, and whether or not the vehicle is a consumption-suppressable travelable vehicle (here, HEV, PHEV, EV). Is stored.
- the drive type information indicates any one of an engine drive system of an engine vehicle using only gasoline, an HEV HEV drive system, a PHEV PHEV drive system, and an EV EV drive system.
- the vehicle information storage unit 111 also stores the vehicle ID of the probe vehicle 151, the vehicle model number, the charging port (type of the charging plug), the gasoline capacity, and the total charging travel distance as stored vehicle information.
- the gasoline capacity is information stored in the vehicle information storage unit 111 when the probe vehicle 151 is an engine vehicle or a PHEV (HEV), for example, and indicates the maximum gasoline capacity that can be stored.
- the total charging travel distance is information stored in the vehicle information storage unit 111 when the probe vehicle 151 is, for example, PHEV (HEV) or EV, and the vehicle is used only with the maximum charged power. Indicates the maximum distance estimated to be able to travel.
- the traveling system / body system control unit 112 includes a traveling system control unit and a body system control unit (not shown).
- the traveling system control unit is composed of a group of devices that control equipment related to traveling of the probe vehicle 151 based on a driver's operation received by a brake pedal, an accelerator pedal, and a steering wheel (not shown).
- the traveling system control unit controls the rotational speed (wheel rotational speed) of the engine or motor of the power unit 113 and the brake system device based on the operation of the driver, and the speed of the probe vehicle 151.
- the direction of travel of the probe vehicle 151 is controlled by controlling the posture of the shaft or the like.
- the body system control unit is composed of a group of devices that control devices not directly related to the traveling of the probe vehicle 151 in response to a control signal generated by a driver operating an operation input means (not shown). For example, it controls wiper driving, lighting information transmission, blinker lighting, door opening and closing, window opening and closing.
- the power unit 113 is a drive source that causes the probe vehicle 151 to travel, and has a detection function of detecting variable vehicle information regarding the probe vehicle 151.
- the vehicle information detected by the power unit 113 is output to the traveling system / body system control unit 112 and used in the traveling system / body system control unit 112 and the like.
- the vehicle information detected by the power unit 113 may be referred to as “detected vehicle information”.
- the power unit 113 detects probe vehicle speed information that is information related to the speed of the probe vehicle 151 as detected vehicle information.
- the power unit 113 detects the remaining fuel amount that is information on the remaining fuel amount (remaining energy amount) of the probe vehicle 151 as detected vehicle information. Information (remaining energy information) is detected.
- the power unit 113 detects consumption suppression travel mode information regarding on / off of the consumption suppression travel mode as detected vehicle information, and presently A chargeable travelable distance that is a maximum distance that is estimated to be possible for the vehicle to travel using only the charged power is detected.
- the probe information terminal 105 includes an operation unit 121 such as an HMI (Human machine Interface) that accepts an information operation such as a destination input from a driver, and an information output unit that displays or notifies various information.
- an operation unit 121 such as an HMI (Human machine Interface) that accepts an information operation such as a destination input from a driver, and an information output unit that displays or notifies various information.
- 122 a position detection unit 123, an in-vehicle map DB (database) 124, a communication interface unit 125, a traffic condition input unit 126, a probe information output unit 127, an operation received by the operation unit 121, and the like.
- a control unit 128 composed of a CPU or the like for overall control.
- the position detection unit 123 includes a GPS (Global Positioning System) device, a yaw rate sensor, an acceleration sensor, and the like, and detects probe vehicle position information (vehicle position information) that is information related to the position of the probe vehicle 151.
- the in-vehicle map DB 124 includes information on roads such as absolute coordinates corresponding to longitude and latitude, link numbers, and information on facilities that can be set as destinations (for example, unique names and general names of facilities, and facilities on the map). Map data including information such as coordinate positions).
- the control unit 128 uses the probe vehicle position information and the map data of the in-vehicle map DB 124 to search for a travel route on which the probe vehicle 151 should travel to the destination, and to select a driver along the travel route. It has a navigation function to guide to the destination.
- the control unit 128 charges the probe vehicle 151 based on the travel route and the above-described stored vehicle information and detected vehicle information. Generate a charging plan (a type of energy supply plan) indicating the charging facility to be received.
- a charging plan a type of energy supply plan
- the control unit 128 supplies the probe vehicle 151 with fuel based on the travel route and the above-described stored vehicle information and detected vehicle information.
- Generate a refueling plan (a type of energy supply plan) that indicates the refueling facility to receive.
- the control unit 128 also stores stored vehicle information including drive type information stored in the vehicle information storage unit 111, probe vehicle speed information detected by the power unit 113, consumption-suppressed travel mode information, and fuel remaining amount information.
- the detected vehicle information including the probe vehicle position information detected by the position detection unit 123 is acquired, and the probe information including these information is generated.
- FIG. 2 to 4 are diagrams showing examples of probe information generated by the control unit 128.
- FIG. 2 to 4 show probe information when the driving type of the probe vehicle 151 is EV driving system, PHEV driving system (HEV driving system is the same), and engine driving system, respectively.
- the probe information shown in these figures is included in the stored vehicle information, the drive type (corresponding to the drive type information), the vehicle ID, the vehicle model number, the charging port, the total charging travel distance, the gasoline capacity, and the detected vehicle information. It includes travel speed (corresponding to probe vehicle speed information), chargeable travel distance, planned speed travel ON / OFF (corresponding to consumption-suppressed travel mode information), and remaining fuel (corresponding to fuel remaining information).
- the probe information includes the destination received by the operation unit 121, the current location detected by the position detection unit 123 (corresponding to the probe vehicle position information), and the charging plan or the refueling plan generated by the control unit 128. Yes.
- the communication interface unit 125 communicates with the center system 201 and the like via the communication network 200.
- the traffic situation input unit 126 gives the information received by the communication interface unit 125 to the control unit 128.
- the probe information output unit 127 gives information in the probe vehicle 151 (in this case, the control unit 128) to the communication interface unit 125, and the communication interface unit 125 sends the information from the probe information output unit 127 to the center side system 201 or the like. Send.
- the vehicle-side system 101 is described as including the traffic condition input unit 126, but the traffic condition input unit 126 is not essential.
- the communication interface unit 125 and the probe information output unit 127 described above constitute a vehicle-side transmission unit 136.
- the vehicle-side transmission unit 136 configured as described above transmits the probe information including the probe vehicle position information, the drive type information, the probe vehicle speed information, the consumption-suppressing travel mode information, and the like via the communication network 200. 201 (outside the vehicle).
- the center side system 201 includes a communication interface unit 211, a probe information input unit 212, a probe DB server 213, a center side map DB 214, an infrastructure information input unit 215, and an infrastructure DB server 216. , A traffic situation estimation unit 217, a traffic situation DB server 218, and a traffic situation provision unit 219. In the present embodiment, the traffic situation estimation unit 217 controls the center system 201 in an integrated manner. Next, each component of the center side system 201 will be described.
- the communication interface unit 211 is connected to the vehicle-side system 101 of the probe vehicle 151 via the communication network 200, other probe information systems not shown, VICS (Vehicle Information and Communication System) (registered trademark) center, or It communicates with the RDS-TMC (Radio Data System-Traffic Message Channel) center.
- VICS Vehicle Information and Communication System
- RDS-TMC Radio Data System-Traffic Message Channel
- the communication interface unit 211 receives probe information transmitted from the vehicle-side system 101 via the communication network 200.
- the probe information received by the communication interface unit 211 may be probe information received directly from the vehicle-side system 101 of the probe vehicle 151, or probe information received indirectly via another probe information system or the like. It may be.
- the probe information input unit 212 gives the probe information received by the communication interface unit 211 to the probe DB server 213.
- the center side map DB 214 stores the same map data as the in-vehicle map DB 124.
- the probe DB server 213 stores the probe information from the probe information input unit 212 for each road and time by using the road and time included in the map data of the center side map DB 214 as parameters. At this time, probe information may be stored for each drive type by using the drive type indicated by the drive type information as a parameter.
- the communication interface unit 211 and the probe information input unit 212 described above constitute a center-side receiving unit 231 that is a receiving unit.
- the center-side receiving unit 231 configured as described above directly or indirectly receives probe information including probe vehicle position information, drive type information, probe vehicle speed information, and consumption-suppressed travel mode information from the vehicle-side system 101. To receive.
- the infrastructure information input unit 215 gives infrastructure information such as VICS information received by the communication interface unit 211 to the infrastructure DB server 216.
- the VICS information is information from the VICS center and includes, for example, a travelable speed described later and traffic jam information for the main road.
- the infrastructure information is information from the VICS center and other probe information systems, and includes, for example, information indicating the current date and weather for each road. In addition, the supply source of various information of infrastructure information may be changed as appropriate, and information indicating weather may be supplied (transmitted) from the vehicle.
- the infrastructure DB server 216 stores the infrastructure information from the infrastructure information input unit 215 using the road and time as parameters in the same manner as the probe DB server 213.
- the traffic situation estimation unit 217 is based on the probe vehicle position information, the drive type information, and the probe vehicle speed information included in the probe information (probe information received by the center side reception unit 231) stored in the probe DB server 213.
- a traffic situation including a travelable speed for each drive type on each road (on each link) (hereinafter also referred to as “distributed traffic situation”) is estimated.
- the travelable speed is the maximum speed estimated that the vehicle can travel under the current traffic conditions.
- the travelable speed for each drive type of the vehicle on each road (on each link) is referred to as “drive-type travelable speed”.
- the traffic situation estimation unit 217 estimates the distribution traffic situation including the drive-type travelable speed in consideration of the consumption suppression travel mode information included in the probe information.
- the traffic situation estimation unit 217 may estimate traffic jam information based on infrastructure information from the VICS center and include the traffic jam information in the distribution traffic situation. The estimation of the drive type travelable speed in the traffic state estimation unit 217 will be described in detail later.
- the traffic situation DB server 218 stores the distribution traffic situation estimated by the traffic situation estimation unit 217 for each road.
- the traffic situation providing unit 219 gives the distribution traffic situation stored in the traffic situation DB server 218 to the communication interface unit 211, and the communication interface unit 211 gives the delivery traffic situation to the vehicle-side system 101 of the probe vehicle 151 and others. Send (outgoing) to outside such as probe information system.
- the communication interface unit 211 and the traffic condition providing unit 219 described above constitute a center side transmission unit 232 that is a transmission unit.
- the center side transmission unit 232 configured in this way transmits the distribution traffic situation (distribution traffic situation stored in the traffic situation DB server 218) estimated by the traffic situation estimation unit 217 to the outside such as the vehicle side system 101. (send.
- the center side transmission unit 232 can transmit the distribution traffic situation for each road. Yes.
- the center side transmission unit 232 receives each vehicle side system 101 as a transmission destination so that each vehicle side system 101 and each probe information system can receive the necessary distribution traffic situation.
- a method is used in which the ID information for identifying is added to the distribution traffic situation and transmitted.
- the center side transmission part 232 uses the method of transmitting a delivery traffic condition uniformly by broadcast.
- each vehicle-side system 101 or the like that is a transmission destination is configured to determine and receive a necessary distribution traffic situation by itself.
- 5 to 7 are flowcharts showing processing of the probe information system according to the present embodiment.
- the process of the vehicle side system 101 will be described with reference to FIG. 5, and then the process of the center side system 201 will be described with reference to FIGS.
- step S1 shown in FIG. 5 the position detector 123 detects probe vehicle position information (here, the coordinate position Pk), and the power unit 113 detects detected vehicle information.
- step S ⁇ b> 2 the control unit 128 acquires probe vehicle position information from the position detection unit 123.
- the control unit 128 acquires stored vehicle information from the vehicle information storage unit 111 and also acquires detected vehicle information from the power unit 113 via the in-vehicle LAN 114 or the like. Then, the control unit 128 generates probe information as shown in FIGS. 2 to 4 from the information acquired here.
- step S3 the vehicle-side transmission unit 136 of the vehicle-side system 101 transmits the probe information generated by the control unit 128 to the center-side system 201.
- the vehicle-side system 101 performs the above steps S1 to S3 at regular intervals.
- the center-side receiving unit 231 receives probe information from the vehicle-side system 101 directly or indirectly, and gives the probe information to the probe DB server 213.
- the probe DB server 213 stores the probe information given from the center side receiving unit 231 in chronological order.
- the infrastructure information input unit 215 gives the VICS information received by the communication interface unit 211 to the infrastructure DB server 216, and the infrastructure DB server 216 stores the VICS information and the like as infrastructure information.
- step S12 the traffic situation estimation unit 217 estimates the distribution traffic situation based on the probe information stored in chronological order in step S11.
- FIG. 7 is a diagram illustrating a distribution traffic situation estimation process performed by the traffic situation estimation unit 217 in step S12.
- the traffic situation estimation unit 217 detects the probe vehicle position information, the drive type information, the probe vehicle speed information, and the consumption suppression travel mode information included in the probe information received by the center side reception unit 231. Based on the above, the drive type travelable speed is estimated.
- this estimation process will be described in detail with reference to FIG.
- the traffic situation estimation unit 217 determines a probe related to one road (position) to be estimated from the probe information stored in the probe DB server 213 (probe information received by the center side reception unit 231). Get information.
- the traffic situation estimation unit 217 has acquired one piece of probe information.
- the traffic situation estimation unit 217 acquires drive type information, probe vehicle speed information, and consumption-suppressed travel mode information from the acquired probe information.
- step S22 the traffic situation estimation unit 217 determines whether the drive type information acquired in step S21 indicates a PHEV drive method (HEV drive method) or an EV drive method. If the drive type information does not indicate either the PHEV drive method (HEV drive method) or the EV drive method (here, the drive type information indicates the engine drive method), the process proceeds to step S23, where the drive type information is PHEV drive. When indicating either the method (HEV drive method) or the EV drive method, the process proceeds to step S24.
- the traffic condition estimation unit 217 indicates the speed that can be traveled by the engine drive method (hereinafter also referred to as “Veng”) on the estimation target road, as indicated by the probe vehicle speed information acquired in step S21. v.
- the traffic condition estimation unit 217 estimates the travelable speed Veng as the smaller one of the speed v indicated by the probe vehicle speed information and the speed limit.
- Veng Min (speed limit, v) shown in FIG. 7 means this.
- a speed limit corresponding to the road to be estimated is used among speed limits pre-stored one-to-one with each road in the map data. Thereafter, the series of processes shown in FIG.
- step S24 the traffic situation estimation unit 217 determines whether the consumption suppression travel mode is ON or OFF based on the consumption suppression travel mode information acquired in step S21.
- the process proceeds to step S25, and when the consumption suppression travel mode is OFF, the process proceeds to step S26.
- the road is actually vacant because the travel is prioritized over the suppression of energy consumption over the travel speed. Nevertheless, it is highly probable that they are not driving as fast as possible. Therefore, on this road, it can be considered that the probe vehicle 151 with the consumption-suppressing travel mode turned on can be overtaken, and the vehicle can travel at a speed v or higher indicated by the probe vehicle speed information.
- step S25 the traffic condition estimation unit 217 sets the PHEV drive system travelable speed (hereinafter also referred to as “Vphev”) on the estimation target road to a speed v or higher indicated by the probe vehicle speed information. It is estimated that f1 (limit speed, v) which is a value equal to or less than the limit speed.
- the traffic condition estimation unit 217 sets the EV driving method travel speed (hereinafter also referred to as “Vev”) on the estimation target road to a speed v or higher indicated by the probe vehicle speed information.
- f2 limit speed, v which is a value equal to or less than the limit speed is estimated.
- f1 (restricted speed, v) and f2 (restricted speed, v) are functions of the restricted speed and speed v. It may be a function.
- step S24 if the consumption suppression travel mode is OFF, it is considered that the driver of the probe vehicle 151 is about to travel as fast as possible. That is, on this road, it is considered that the vehicle traveling speed can be increased only to the same extent as the speed of the probe vehicle 151 for which the consumption suppression traveling mode is OFF.
- step S26 the traffic situation estimation unit 217 estimates the PHEV drive method travel speed Vphev on the estimation target road (position) as Min (limit speed, v), and the EV drive system travel speed. Vev is estimated to be Min (speed limit, v). Thereafter, the series of processes shown in FIG.
- the traffic state estimation unit 217 has described the process of estimating the drive-type travelable speed. In the above description, it is assumed that the traffic situation estimation unit 217 has acquired one piece of probe information in step S21. However, when the traffic situation estimation unit 217 can acquire a plurality of probe vehicle speed information for one drive type (one drive type information) in step S21, instead of the above-mentioned speed v, A statistical value (for example, an average value or a maximum value) of the speed v indicated by the plurality of probe vehicle speed information may be used.
- a statistical value for example, an average value or a maximum value
- step S ⁇ b> 13 the traffic situation estimation unit 217 corrects the drive type travelable speed (distributed traffic situation). For example, if the configuration is such that the drive type travelable speed can be acquired from the infrastructure information, the drive type travelable speed acquired from the infrastructure information is compared with the drive type travelable speed estimated in step S12. To do. When the difference between the two is equal to or greater than a predetermined threshold, the traffic condition estimation unit 217 reduces the reliability of the drive type travelable speed, or enables only one of the drive type travelable speeds, The average value of both may be the corrected drive type travelable speed. Alternatively, when only the speed of the probe vehicle 151 of the PHEV driving method (HEV driving method) or EV driving method can be obtained, the traveling type speed acquired from the infrastructure information can be regarded as the traveling speed of the engine driving method. Good.
- HEV driving method PHEV driving method
- step S14 the traffic situation estimation unit 217 stores (saves) the distribution traffic situation including the corrected drive type travelable speed in the traffic situation DB server 218. Then, the center side transmission unit 232 transmits (transmits) the distribution traffic situation stored in the traffic situation DB server 218 to the outside of each vehicle or the like.
- the drive type travelable speed is estimated, and the drive type travelable speed is transmitted to each vehicle.
- the travelable speed of a vehicle for example, an engine vehicle
- the travelable speed of a vehicle for example, PHEV
- each vehicle can acquire the travelable speed of a vehicle (for example, an engine vehicle) that does not have the consumption-suppressed travel mode as the drive-type travelable speed, so that the estimated travel is possible
- the reliability of speed, and hence the reliability of the probe information system can be improved.
- the vehicle that does not have the consumption-suppressing travel mode in this case, the engine vehicle
- the vehicle that has the consumption-suppressed travel mode for example, PHEV
- the travelable speed of a vehicle having a consumption-suppressed travel mode is considered to be closer to the actual travelable speed.
- each vehicle can acquire the travelable speed of a vehicle (for example, PHEV) having a consumption-suppressed travel mode as the driveable travelable speed, and thus the reliability of the estimated travelable speed is estimated. And by extension, the reliability of the probe information system can be improved.
- a vehicle for example, PHEV
- the traffic situation estimation unit 217 estimates the traffic situation (drive type travelable speed) in consideration of the consumption suppression travel mode information.
- the travelable speed of the vehicle whose consumption suppression travel mode is OFF is larger than the travelable speed of the vehicle whose consumption suppression travel mode is ON, and is close to the actual travelable speed. Therefore, according to the present embodiment, each vehicle has the consumption suppression travel mode OFF even when it is not possible to obtain the travelable speed of a vehicle (in this case, the engine vehicle) that does not have the consumption suppression travel mode. Since the travelable speed of the vehicle can be acquired, the reliability of the estimated travelable speed, and thus the reliability of the probe information system can be improved.
- the drive type travelable speed is estimated by one of steps S25 and S26, and the drive type travel is performed.
- the reliability may be transmitted by including the reliability in the distribution traffic situation, such as assigning a low reliability to the possible speed.
- the center-side system 201 includes the center-side transmission unit 232, but the present invention is not limited to this.
- the center-side system 201 receives access from each vehicle-side system 101 and each probe information system (external) in the same manner as a general web page browsing method.
- a browsing unit that enables browsing (opening) of the distribution traffic state at the access source may be provided.
- the vehicle-side system 101 may transmit the frequency of the brake operation in the probe vehicle 151, and the center-side receiving unit 231 may receive the frequency of the brake operation from the vehicle-side system 101.
- the traffic situation estimation unit 217 may estimate the distribution traffic situation in consideration of the frequency of the brake operation received by the center side reception unit 231. For example, the traffic situation estimation unit 217 may use only the speed of the acquired probe vehicle speed information for estimation of the drive-type travelable speed when the frequency of the brake operation is greater than a threshold value.
- the traffic situation estimation unit 217 estimates a reachable range, which is a range in which the vehicle can reach within a predetermined time, for each drive type based on the drive type travelable speed estimated by itself, and determines the reachable range. It may be included in the distribution traffic situation. For example, in the case where the EV drive type drive type travelable speed is 80 km / h and the predetermined time is 2 hours, the EV drive type vehicle can reach the range of 160 km obtained by multiplying the product by the product. It may be estimated as a range.
- the probe information terminal 105 is assumed to be a car navigation device.
- the present invention is not limited to this, and may be a PND (Portable Navigation Device) or a smartphone, for example.
- the control system-information system interface 106 has been described as being a wired communication device.
- a wireless communication device such as Bluetooth (registered trademark) may be used. .
- the center-side system 201 transmits the distribution traffic situation including the drive type travelable speed.
- Each vehicle (each vehicle-side system 101) acquires an appropriate travelable speed from the drive type travelable speeds for a plurality of drive types.
- the center side system 201 acquires an appropriate travelable speed from the drive type travelable speeds of a plurality of drive types, and transmits it.
- FIG. 8 is a diagram illustrating a distribution traffic situation estimation process performed by the traffic situation estimation unit 217 according to the present modification in step S12.
- the traffic situation estimation unit 217 includes the maximum drive type travelable speed Vmax in the delivery traffic situation and stores (saves) the delivery traffic situation in the traffic situation DB server 218. To do. And the center side transmission part 232 transmits the said delivery traffic condition to the exteriors, such as each vehicle (transmission).
- each vehicle can acquire the maximum drive type travelable speed Vmax that is an appropriate travelable speed, and thus the reliability of the estimated travelable speed, and thus the probe information.
- the reliability of the system can be increased. It can also be expected that the processing load on the vehicle-side system 101 is suppressed.
- the maximum drive type travelable speed Vmax Max (Veng, Vphev, Vev).
- the center-side system 201 estimates traffic jam information (hereinafter sometimes referred to as “supply traffic jam information”) related to charging (energy supply) at the charging facility (energy supply facility). It has become.
- supply traffic jam information traffic jam information
- FIG. 9 is a diagram illustrating a distribution traffic situation estimation process performed by the traffic situation estimation unit 217 according to the present modification in step S12.
- the traffic situation estimation unit 217 relates to energy supply at the energy supply facility based on the probe vehicle position information received by the center side reception unit 231 and the position of the energy supply facility. Traffic congestion information is estimated for each drive type.
- this estimation process will be described in detail with reference to FIG.
- step S21 it is assumed that the traffic situation estimation unit 217 has acquired a plurality of probe vehicle speed information for one drive type information (one drive type) to be estimated.
- the traffic situation estimation unit 217 performs the same processing as described above in steps S21 to S27. Then, after step S27, in step S28, the traffic situation estimation unit 217 determines whether the estimation target drive type information indicates a PHEV drive method (HEV drive method) or an EV drive method. If it is determined that the estimation target drive type information indicates either the PHEV drive method (HEV drive method) or the EV drive method, the process proceeds to step S29, and the estimation target drive type information is the PHEV drive method (HEV drive method). When it is determined that neither the EV drive method nor the EV drive method is indicated (when it is determined that the engine drive method is indicated here), the series of processes shown in FIG.
- HEV drive method PHEV drive method
- step S29 the traffic condition estimation unit 217 acquires the position of the energy supply facility corresponding to the drive type information to be estimated from the map data. For example, when the estimation target drive type information indicates the EV drive method, the position of the charging facility is acquired from the map data. And the traffic condition estimation part 217 is based on the several probe vehicle position information acquired by step S21, and the position of the energy supply facility acquired here, The drive classification of the estimation object located around the said energy supply facility The number of probe vehicles 151 belonging to the information is obtained. The traffic situation estimation unit 217 generates supply congestion information indicating the obtained number of vehicles. Thereafter, the series of processing shown in FIG.
- the traffic situation estimation unit 217 includes the generated supply congestion information (estimated supply congestion information) in the distribution traffic situation, and the distribution traffic situation is stored in the traffic situation DB server 218.
- the center side transmission part 232 transmits the said delivery traffic condition to the exteriors, such as each vehicle (transmission).
- each vehicle can acquire traffic jam information related to energy supply. Accordingly, each vehicle can receive energy supply at an energy supply facility that is not congested.
- the supply congestion information is estimated for PHEV (HEV) and EV, but the supply congestion information may be similarly estimated for the engine vehicle.
- the vehicle is a PHEV (HEV) or EV that generates the above-described charging plan
- the distance that the gasoline travels to the charging facility that is not congested is as much as possible based on the supply congestion information from the center-side system 201. You may change an energy supply plan so that it may become long.
- the center-side system 201 estimates traffic jam information (supply traffic jam information) related to charging (energy supply) at the charging facility (energy supply facility).
- FIG. 10 is a diagram showing a distribution traffic situation estimation process performed by the traffic situation estimation unit 217 according to the present modification in step S12.
- the traffic situation estimation unit 217 determines traffic information (replenishment congestion information) related to energy supply at the energy supply facility based on the drive type travelable speeds of a plurality of drive types estimated by itself. ).
- traffic information return congestion information
- the traffic situation estimation unit 217 performs the same processing as described above in steps S21 to S27. Then, after step S27, in step S31, the traffic situation estimation unit 217 determines whether or not it is set to estimate supply congestion information. If it is set to be estimated, the process proceeds to step S32. If it is not set to be estimated, the series of processes shown in FIG.
- step S32 If it is determined in step S32 that Vphev ⁇ g1 (Veng), the process proceeds to step S33, and the traffic situation estimation unit 217 is on the road corresponding to the drive type travelable speed (Vphev) used here. In the charging facility or the refueling facility, replenishment traffic congestion information indicating that charging congestion or refueling congestion has occurred is generated. Thereafter, the series of processes shown in FIG. On the other hand, if it is determined in step S32 that Vphev ⁇ g1 (Veng), the process proceeds to step 34, in which the traffic state estimation unit 217 is a road corresponding to the drive type travelable speed (Vphev) used here. In the upper charging facility or refueling facility, replenishment traffic congestion information indicating that no charging traffic congestion or refueling traffic congestion has occurred is generated. Thereafter, the series of processes shown in FIG.
- step S32 determines whether Vev ⁇ g1 (Veng) is the drive type travelable speed (Vev) used here.
- the process proceeds to step S33, and the traffic state estimation unit 217 corresponds to the drive type travelable speed (Vev) used here.
- the traffic state estimation unit 217 corresponds to the drive type travelable speed (Vev) used here.
- the process proceeds to step 34, and the traffic state estimation unit 217 road corresponding to the drive type travelable speed (Vev) used here.
- replenishment congestion information indicating that no charging congestion has occurred is generated. Thereafter, the series of processes shown in FIG.
- the traffic situation estimation unit 217 includes the generated supply congestion information (estimated supply congestion information) in the distribution traffic situation, and the distribution traffic situation is stored in the traffic situation DB server 218.
- the center side transmission part 232 transmits the said delivery traffic condition to the exteriors, such as each vehicle (transmission).
- each vehicle can acquire traffic jam information related to energy supply. Accordingly, each vehicle can receive energy supply at an energy supply facility that is not congested.
- Vphev or the like is compared with the function value of Veng to determine whether or not a supply congestion has occurred.
- the present invention is not limited to this, and Vphev or the like may be compared with a preset threshold value to determine whether or not a supply congestion has occurred.
- the traffic situation estimation unit 217 may estimate the supply congestion information by taking the probe vehicle position information and the position of the energy supply facility into consideration.
- the traffic condition estimation unit 217 obtains the travelable speed of the probe vehicle 151 located around the energy supply facility for one drive type information, and whether or not the travelable speed exceeds a preset threshold value. May be determined.
- the supply congestion information is estimated for PHEV (HEV) and EV, but the supply congestion information may be similarly estimated for the engine vehicle.
- the vehicle that has received the supplemental traffic jam information is PHEV (HEV) or EV that generates the above-described charging plan
- the distance on which the gasoline travels to the charging facility where there is no traffic jam is based on the supplemental traffic jam information.
- the energy supply plan may be changed so as to be as long as possible.
- Embodiment 2 In the first embodiment, the estimation of the drive type travelable speed has been mainly described. The second embodiment of the present invention will be described based on the estimation of the waiting for replenishment until receiving energy replenishment based on the drive type travelable speed.
- the block configuration of the probe information system according to the present embodiment is the same as the block configuration of the probe information system according to Embodiment 1 (FIG. 1).
- the same or similar components as those described in the first embodiment are denoted by the same reference numerals and description thereof is omitted.
- the process of the vehicle side system 101 which concerns on this Embodiment is the same as the process demonstrated in Embodiment 1, the description is abbreviate
- FIG. 11 is a flowchart showing processing of the center side system 201 according to the present embodiment.
- the center side system 201 (traffic condition estimation unit 217) is on each road (on each link) based on the probe vehicle position information and the drive type information included in the probe information received by the center side reception unit 231.
- the distribution traffic situation including the number of drive type vehicles that is the number of vehicles for each drive type is estimated.
- estimation processing of the number of vehicles of drive type in the center side system 201 will be described in detail with reference to FIG.
- the estimation process described below is performed in parallel with the estimation process (FIGS. 6 to 10) described in the first embodiment or a part of the estimation process.
- the center side receiving unit 231 receives the probe information from the vehicle side system 101 directly or indirectly, and gives the probe information to the probe DB server 213.
- the probe DB server 213 stores the probe information given from the center side receiving unit 231 in chronological order.
- the infrastructure information input unit 215 gives the VICS information received by the communication interface unit 211 to the infrastructure DB server 216, and the infrastructure DB server 216 stores the VICS information and the like as infrastructure information.
- step S42 the traffic situation estimation unit 217 estimates the delivery traffic situation based on the probe information stored in chronological order in step S41.
- the traffic situation estimation unit 217 adds the drive type information included in the probe information to the position indicated by the probe vehicle position information included in the probe information on the map indicated by the map data stored in the center-side map DB 214.
- the traffic situation estimation unit 217 estimates the distribution traffic situation including the number of drive type vehicles corresponding to the drive type distribution on the map by performing this process on the probe information from the plurality of probe vehicles 151.
- the number of drive type vehicles shown in FIG. 12 is 35, 5, and 10 engine vehicles, PHEVs, and EVs located on the road between the point O and the charging facility SA1, respectively. It is shown that.
- the number of drive type vehicles shown in FIG. 12 is 35, 5, and 10, respectively, of engine vehicles, PHEVs, and EVs located on the road between the charging facilities SA1 and SA2. It is shown that.
- the bottom row of the tables shown in FIGS. 12 and 13 indicates the travelable speed described in the first embodiment (here, the maximum drive type travelable speed Vmax described in the first modification of the first embodiment). The estimation results are also shown.
- the traffic situation estimation unit 217 also estimates the total number of all vehicles located on each road by summing the number of drive type vehicles for each road. In the example shown in FIG. 12, the traffic situation estimation unit 217 adds up 35 cars, 5 cars, and 10 cars indicated by the number of vehicles of driving type on the road between the point O and the charging facility SA1. The total number of all the vehicles located at is estimated at 50. In the example shown in FIG. 12, similarly, the traffic situation estimation unit 217 adds up 35 cars, 5 cars, and 10 cars indicated by the number of driving types for the road between the charging facilities SA1 and SA2. The total number of all vehicles located on the road is estimated to be 50.
- the traffic situation estimation unit 217 attempts to receive charging at one charging facility (here, the charging facility SA2) based on the charging plan (FIGS. 2 and 3) included in the probe information.
- the number of vehicles to be estimated is also estimated.
- the traffic situation estimation unit 217 includes the charging facility SA2 among a plurality (20 in FIG. 12) of EVs located on the road between the point O and the charging facility SA2.
- the estimation results (5 in FIG. 12) of the number of vehicles that are going to receive charging power are shown.
- the traffic situation estimation unit 217 corrects the number of vehicles by type of driving (distributed traffic situation) in consideration of infrastructure information. For example, in the current situation, since the spread of probe vehicles is not sufficient, the total number of probe vehicles on each road estimated in step S42 may differ from the actual total number of vehicles on each road. . Therefore, when the difference is large, the traffic situation estimation unit 217 corrects the number of drive type vehicles in consideration of infrastructure information. For example, the traffic situation estimation unit 217 obtains a ratio by dividing the total number of vehicles on each road indicated by the infrastructure information by the total number of vehicles on each road estimated in step S42, and estimates the ratio in step S42. The number of drive type vehicles is corrected by multiplying the number of drive type vehicles.
- step S44 the traffic situation estimation unit 217 stores (saves) the distribution traffic situation including the corrected number of drive type vehicles in the traffic situation DB server 218 (storage unit). Then, the center side transmission unit 232 transmits (transmits) the distribution traffic situation stored in the traffic situation DB server 218 to the outside of each vehicle or the like.
- related probe information system a probe information system (hereinafter referred to as “related probe information system”) related to these will be described with reference to FIG. Will be described).
- the total number of probe vehicles located on each road is transmitted to each vehicle from the center side system.
- 50 probe vehicles are located on the road between the point O (the current location of the vehicle A as an EV) and the charging facility SA1, and are located on the road between the charging facilities SA1 and SA2.
- the distribution traffic situation including 50 probe vehicles to be transmitted is transmitted to each vehicle.
- the driver of the vehicle A may charge up to 50 vehicles at the charging facility SA1, and up to 50 vehicles at the charging facility SA2. It is only possible to predict that there is a possibility that the vehicle will be charged. Therefore, the driver cannot determine whether or not the charging facilities SA1 and SA2 should be charged, and when the charging facilities SA1 and SA2 have a charging congestion, when the driver tries to receive charging at the charging facilities SA1 and SA2. Have to wait for a long time.
- the driver of the vehicle A can acquire the number of drive type vehicles as shown in FIGS. If the vehicle A receives the number of driving type vehicles as shown in FIG. 12, the driver of the vehicle A predicts that the charging waiting times of the charging facilities SA1 and SA2 are approximately the same. be able to. On the other hand, if the vehicle A receives the number of driving type vehicles as shown in FIG. 13, the driver of the vehicle A spends longer time waiting for charging in the charging facility SA2 than in the charging facility SA1. Can be predicted. Therefore, in this case, the driver of the vehicle A tries to receive charging at the charging facility SA1.
- the driver of each vehicle can obtain the number of drive type vehicles.
- the waiting time for charging at SA1 and SA2 can be predicted to some extent. As a result, it is possible to avoid waiting for charging for a long time (waiting for replenishment).
- the number of vehicles to be charged at one charging facility is estimated and included in the distribution traffic situation. Then, the prediction accuracy of the charging waiting time can be increased.
- the traffic condition estimation unit 217 has the number of vehicles currently being replenished at each charging facility (substantially the same as the number of vehicles shown in the supplemental congestion information described in the second modification of the first embodiment), or When the current number of empty vehicles at each charging facility can be acquired from infrastructure information or the like, the number of vehicles (or the number of empty vehicles) may be included in the distribution traffic situation.
- the vehicle that receives the distribution traffic situation is the EV and the energy supply facility and the energy supply plan are the charging facility and the charge plan is mainly described as an example.
- the present invention is not limited to this.
- the vehicle that receives the distribution traffic situation is an engine vehicle
- the energy supply facility and the energy supply plan are the fuel supply facility and the fuel supply plan, the same as the above description.
- An effect can be obtained.
- the vehicle that receives the distribution traffic situation is PHEV (HEV)
- HEV PHEV
- the energy supply facility is a charging facility or a fueling facility and the energy supply plan is a charging plan or a fueling plan
- the effect of can be obtained. This also applies to the following description.
- the center-side system 201 has a distribution of the number of vehicles by drive type (hereinafter referred to as “distance”) with respect to the travelable distance that is the maximum distance that the vehicle can travel using currently stored energy. It is assumed that “vehicle number distribution” may be stored.
- the EV travelable distance is the same as the chargeable travel distance described with reference to FIG. 2 and the like.
- the PHEV (HEV) travelable distance is approximately the chargeable travel distance described with reference to FIG. And the distance including the remaining amount of fuel.
- the distance vehicle number distribution stored in the center-side system 201 is such that the total travel distance, which is the maximum distance that the vehicle can travel in the current vehicle state, is divided in units of a fixed travel distance.
- the traffic state estimating unit 217 determines the number of driving type vehicles for each travelable distance (hereinafter referred to as “the number of distance driving type vehicles”). ”).
- the traffic situation estimation unit 217 estimates the value obtained by multiplying the number of drive type vehicles by the existence probability as the number of distance drive type vehicles.
- the number of EVs located on the road between the point O and the charging facility SA1 is indicated as 10 by the number of driving type vehicles.
- the traffic situation estimation unit 217 estimates the number of drive-type vehicles with a travelable distance of 10 to 20 km as one vehicle,..., And the number of drive-type vehicles with a travelable distance of 90 to 100 km as one vehicle.
- the traffic situation estimation unit 217 estimates an energy supply facility (charging facility) where each vehicle is to receive energy supply (charging) based on the number of distance-driven vehicles obtained by the above estimation.
- an energy supply facility where each vehicle is to receive energy supply may be referred to as a “replenishment scheduled facility”.
- the traffic state estimation unit 217 determines the number of distance drive type vehicles, the travel route of each vehicle, and the energy supply facility corresponding to the drive type (for example, charging facility when the drive type is an EV drive system). Estimate the planned replenishment facility, taking into account the position (distance).
- the traffic situation estimation unit 217 obtains a travel route that sequentially passes through the charging facilities SA1 and SA2 from the probe information as a travel route of the vehicle A that is an EV, and the point O and the charging facility SA1. As the distance between and the distance between the charging facilities SA1 and SA2, 30 km is obtained from map data or the like. In this case, since the distance between the point O and the charging facility SA2 is 60 km, the traffic situation estimation unit 217 includes the 10 EVs located on the road between the point O and the charging facility SA1. It is estimated that an EV having a travelable distance of 60 km or less intends to receive charging at the charging facility SA1.
- the traffic condition estimation unit 217 determines the number of drive-type vehicles with a travelable distance of 10 to 20 km as one vehicle, and the number of drive-type vehicles with a travelable distance of 90 to 100 km. Assuming that one vehicle is estimated, it is estimated that six vehicles having a travelable distance of 60 km or less are about to receive charging power at the charging facility SA1.
- the traffic situation estimation unit 217 transmits (distributes) the planned replenishment facility estimated as described above to each vehicle including the delivery traffic situation.
- the driver of each vehicle can obtain a replenishment scheduled facility that is information equivalent to the above-described charging plan (energy replenishment plan). Therefore, similarly to the charging plan (energy replenishment plan), the prediction accuracy of the replenishment waiting time can be improved.
- the traffic situation estimation unit 217 has been described as including the planned replenishment facility in the delivery traffic situation and transmitting it to each vehicle.
- the present invention is not limited to this.
- the number of distance drive type vehicles may be included in the distribution traffic situation and transmitted to each vehicle. If the vehicle (vehicle-side system) that has received the distribution traffic situation is configured to estimate the replenishment scheduled facility based on the number of distance-driven type vehicles as in the center-side system 201 described above, The same effect as described above can be obtained.
- the travelable distance is substantially proportional to the remaining fuel amount indicated by the remaining fuel amount information. Therefore, the traffic situation estimation unit 217 drives the distance based on the number of driving type vehicles estimated by itself and the fuel remaining amount information (energy remaining amount information) included in the probe information received by the center side receiving unit 231. The number of drive type vehicles for each travelable distance substantially the same as the number of type vehicles may be estimated, and this may be included in the distribution traffic situation and transmitted to each vehicle.
- the remaining energy information has been described as fuel remaining information related to the remaining amount of fuel such as gasoline.
- the present invention is not limited to this. Good.
- the traffic condition estimation unit 217 estimates the replenishment scheduled facility in the same manner as described above based on the number of distance-driven vehicles obtained from the remaining fuel information (remaining energy information). It may be included in the situation and transmitted to each vehicle.
- the probe information includes charging port information and the traffic situation estimation unit 217 can acquire charging port information
- the charging port information is In consideration, the number of distance-driven vehicles or the planned supply facility may be estimated.
- the traffic condition estimation unit 217 can acquire the information on the charging method
- the number of distance-driven type vehicles or the replenishment scheduled facility may be estimated in consideration of the information on the charging method.
- the traffic situation estimation unit 217 can acquire the history of the energy supply facility that has received energy supply in the past, the number of distance-driven type vehicles or the planned supply will be based on the position of the energy supply facility. Facilities may be estimated. Further, the traffic situation estimation unit 217 may estimate the number of distance-driven type vehicles or facilities to be replenished on the assumption that each vehicle has received energy replenishment at a plurality of energy replenishment facilities with an equal probability.
- the traffic situation estimation unit 217 can acquire the presence / absence of the energy supply facility from the infrastructure information or the like, the facility to be replenished may be estimated in consideration of the presence / absence of the business.
- the traffic situation estimation unit 217 preferably takes into account weather information included in infrastructure information and the like.
- Estimation target vehicle 151 One probe vehicle 151 to be estimated may be referred to as “estimation target vehicle 151”, and one energy supply facility to be estimated may be referred to as “estimation target supply facility”.
- the traffic condition estimation unit 217 estimates the replenishment waiting time at the energy replenishment facility of the estimation target vehicle 151 based on the above-described replenishment scheduled facility estimated by itself and the above-described travelable speed Vmax.
- the planned replenishment facility used here may be obtained from the distribution of the number of distance vehicles, or may be obtained from the remaining energy information.
- the traffic situation estimation unit 217 obtains the number of vehicles to be supplied with energy at the estimation target supply facility based on the planned supply facility as described above, and from the infrastructure information and map data, one vehicle A unit supply time which is a time (for example, an average time) required for the vehicle to supply at the estimation target supply facility is acquired. Then, the traffic situation estimation unit 217 multiplies the acquired number of vehicles by the unit supply time, so that the supply of the number of vehicles from the current time is completed and the estimation target vehicle 151 can be supplied at the estimation target supply facility. The first time until the time is obtained.
- the traffic state estimation unit 217 acquires the distance between the estimation target vehicle 151 and the estimation target supply facility from the map data, and acquires the above-described travelable speed Vmax. And the traffic condition estimation part 217 calculates
- the traffic situation estimation unit 217 estimates the time obtained by subtracting the second time from the first time as the replenishment waiting time at the estimation target replenishment facility of the estimation target vehicle 151, and the replenishment waiting time is distributed traffic information To be sent to each vehicle.
- the driver of the probe vehicle 151 acquires the replenishment waiting time at the energy replenishment facility that is going to receive energy replenishment. Can do. Therefore, the driver can receive replenishment at an appropriate energy replenishment facility such as an energy replenishment facility with a short replenishment waiting time.
- the estimation accuracy can be improved.
- the first time is set to the number of vehicles to be supplied with energy at the estimation target supply facility ⁇ unit supply time.
- the supply waiting time is literally a waiting time, but is not limited to this.
- the replenishment waiting time may include the number of waiting for replenishment obtained by dividing the literal waiting time by the unit replenishment time.
- the traffic situation estimation unit 217 estimates the replenishment waiting time using the number of vehicles currently being replenished based on the replenishment congestion information described in the second modification of the first embodiment.
- the present invention is not limited to this, and the traffic situation estimation unit 217 waits for replenishment using the number of vehicles when the number of vehicles currently being replenished at the estimation target replenishment facility can be obtained from infrastructure information or the like. The time may be estimated.
- FIG. 15 is a block diagram illustrating a configuration of a probe information system including a vehicle side system 101 and a center side system 201 according to a modification of the second embodiment.
- the traffic situation estimation unit 217 of the center side system 201 cannot acquire the probe information including the drive type information, the number of drive type vehicles can be estimated.
- the probe information system according to this modification is different from the probe information system in that the center side system 201 includes a statistics DB server 220.
- the statistics DB server 220 stores the ratio of the drive type to the total number of probe vehicles 151 on each road (hereinafter also referred to as “drive type ratio”).
- the traffic condition estimation unit 217 estimates the number of drive type vehicles using the drive type ratio for roads for which the drive type information has not been received by the center side receiving unit 231.
- the traffic condition estimation unit 217 is based on the probe vehicle position information received by the center side reception unit 231 (for example, the number of types of vehicle IDs shown in FIG. 2 and the like), between the point O and the charging facility SA1.
- the total number of probe vehicles 151 (50 in each case) located on the road between the charging facilities SA1 and SA2 has already been obtained.
- the traffic situation estimation unit 217 is positioned between the point O and the charging facility SA1 as the number of driving type vehicles by multiplying the total number of probe vehicles 151 between the point O and the charging facility SA1 by the driving type ratio.
- the traffic situation estimation unit 217 is located between the charging facilities SA1 and SA2 as the number of driving type vehicles by multiplying the total number of probe vehicles 151 between the charging facilities SA1 and SA2 by the driving type ratio.
- the number of drive-type vehicles can be estimated even if drive-type information cannot be acquired. Can be provided.
- the statistics DB server 220 stores the drive type ratio for each time, day of the week, and road, and the traffic condition estimation unit 217 displays the date and time of estimation and the drive type ratio according to the estimation target road. It is also possible to configure so that the drive type ratio is acquired from 220 and used for estimating the number of drive type vehicles.
- the traffic situation estimation unit 217 may estimate the number of distance drive type vehicles, the planned supply facility, or the supply waiting time using the number of drive type vehicles estimated here, as in the first embodiment. .
- the traffic condition estimation unit 217 estimates the number of drive type vehicles using the total number of probe vehicles 151 based on the probe vehicle position information.
- the present invention is not limited to this, and the traffic situation estimation unit 217 obtains the total number of vehicles located on each road (each link) from a roadside vehicle identification sensor such as DSRC (Dedicated Short Range Communications) You may use the said total number for estimation of the number of drive classification vehicles.
- the traffic situation estimation unit 217 may estimate the number of vehicles by drive type using road-to-vehicle communication such as ETC (Electronic Toll Collection System) or beacon.
- the traffic condition estimation unit 217 obtains the reliability of the number of vehicles of the drive type (hereinafter referred to as “vehicle number reliability”) based on the type of information used for the estimation of the number of vehicles of the drive type, and the reliability of the number of vehicles.
- the degree may be included in the distribution traffic situation. For example, when the vehicle number reliability is represented by a single number from “1 to 5”, and the vehicle number reliability increases as the number increases, the information used to estimate the number of drive type vehicles is: When the information is the latest information such as the drive type information, the traffic state estimation unit 217 sets the vehicle number reliability of the drive type vehicle number to 5.
- the traffic state estimation unit 217 determines the number of vehicles of the drive type.
- the number reliability is 1. The processing using this vehicle number reliability will be described in the next embodiment.
- FIG. 17 is a block diagram showing a configuration of a probe information system according to Embodiment 3 of the present invention.
- the description is focused on the processing until the distribution traffic situation is transmitted from the center system 201.
- a vehicle-side system 301 that receives and uses the distribution traffic situation will be described.
- the block configuration of vehicle-side system 301 according to the present embodiment is substantially the same as the block configuration of vehicle-side system 101 according to Embodiments 1 and 2. Therefore, among the components of the vehicle-side system 301 according to the present embodiment, those that are the same as or similar to the components of the vehicle-side system 101 according to the second embodiment are changed by using the same names and overlapping. Description is omitted.
- the center side system according to the present embodiment is the same as the center side system 201 according to the second embodiment.
- the vehicle-side system 301 is mounted on a predetermined vehicle (hereinafter also referred to as “vehicle 351”), and the vehicle 351 is described as a non-probe vehicle. To do. And since the function which transmits probe information to the center side system 201 demonstrated in Embodiment 1 is not essential in the vehicle side system 301 of a non-probe vehicle, it is abbreviate
- the vehicle-side system 301 includes a vehicle control unit 304 that controls the vehicle 351 mainly based on a driver's operation, an information terminal 305 that handles various information, and a control system-information system interface 306 that connects them. Yes.
- the vehicle control unit 304 includes a vehicle information storage unit 311, a traveling system / body system control unit 312, and a power unit 313 (speed) that detects own vehicle speed information (vehicle speed information) that is information related to the speed of the vehicle 351. Detection section).
- the information terminal 305 communicates with an operation unit 321, an information output unit 322, a position detection unit 323 that detects own vehicle position information (vehicle position information) that is information related to the position of the vehicle 351, an in-vehicle map DB 324, An interface unit 325, a traffic condition input unit 326, and a control unit 328 are provided.
- the communication interface unit 325 and the traffic condition input unit 326 constitute a vehicle-side receiving unit 337.
- the vehicle-side receiving unit 337 configured as described above receives the distribution traffic situation including the drive type travelable speed and the number of drive type vehicles from the center side system 201.
- the control unit 328 may also describe the drive type travelable speed of the drive type to which the vehicle 351 belongs (hereinafter referred to as “same drive type speed”) from the drive type travelable speed included in the distribution traffic situation received by the vehicle side reception unit 337. Get).
- the control unit 328 describes the number of drive type vehicles of the drive type to which the vehicle 351 belongs (hereinafter referred to as “number of vehicles of the same drive type”) from the number of drive type vehicles included in the distribution traffic situation received by the vehicle side receiving unit 337. Get it).
- the control unit 328 uses the drive type travel of the EV drive method as the associated drive type speed and the number of associated drive type vehicles. The possible speed and the number of drive type vehicles are acquired.
- the control unit 328 sets the number of drive type vehicles belonging to the same position between the point O and the charging facility SA1. Information that the number of EVs on the road is 10 and the number of EVs on the road between the charging facilities SA1 and SA2 is 10.
- the in-vehicle map DB 324 and the control unit 328 constitute a route search unit 338.
- the route search unit 338 configured as described above has the above-described navigation function, and searches for a travel route on which the vehicle 351 should travel based on the associated drive type speed. For example, the route search unit 338 searches for a route with the shortest travel distance to the destination of the vehicle 351 and the highest associated drive type speed as the travel route.
- the control unit 328 controls the information output unit 322 based on the associated drive type speed and the number of associated drive type vehicles.
- 18 and 19 are diagrams illustrating display performed by the information output unit 322 under the control of the control unit 328.
- FIG. FIG. 18 shows a display performed by the information output unit 322 when the center side system 201 transmits the number of drive type vehicles as shown in FIG. 12, and
- FIG. 19 shows the center side system 201 as shown in FIG. This is a display performed by the information output unit 322 when the number of drive type vehicles is transmitted.
- the information output unit 322 displays the map indicated by the map data in the in-vehicle map DB 324, and the self-detection detected by the position detection unit 323 on the map.
- the position of the vehicle 351 indicated by the vehicle position information, the travel route of the vehicle 351 searched by the navigation function of the control unit 328, and the number of empty vehicles at the charging facilities SA1 and SA2 indicated by the infrastructure information and the like are displayed.
- the information output unit 322 displays the associated drive type speed in a balloon (balloon).
- the driver of the vehicle 351 predicts to some extent the time required to reach the charging facilities SA1 and SA2 with reference to the display based on the belonging drive type speed. can do.
- the information output unit 322 displays the number of vehicles belonging to the same driving category in a balloon.
- the driver of the vehicle 351 predicts the charging waiting time at the charging facilities SA1 and SA2 to some extent with reference to the display based on the number of vehicles belonging to the same drive type. can do. As a result, it is possible to avoid waiting for charging for a long time (waiting for replenishment).
- the control unit 328 may be configured to control the information output unit 322 in consideration of the travel route so that the travel route searched by the route search unit 338 is displayed on the information output unit 322. Good. In this case, the driver of the vehicle 351 can easily know which route the vehicle 351 should travel.
- the control unit 328 may estimate the number of associated drive type vehicles for each travelable distance based on the number of associated drive type vehicles.
- the control unit 328 determines the travelable distance from the distribution traffic situation. You may acquire the number of vehicles belonging to the same drive type.
- the control unit 328 outputs information based on the number of vehicles belonging to the same drive for each travelable distance so that the information output unit 322 displays the number of vehicles belonging to the same drive for each travelable distance.
- the unit 322 may be configured to be controlled. According to such a configuration, the prediction accuracy of the replenishment waiting time by the driver can be improved.
- the control unit 328 uses the energy replenishment facility in which each vehicle having the same vehicle attributes as the vehicle 351 is to receive energy replenishment based on the number of drive type vehicles for each travelable distance ( Hereinafter, it may be referred to as “same facility to be supplied”.
- the control unit 328 may acquire the affiliated supply planned facility from the distribution traffic situation. Good. Then, in these cases, the control unit 328 may be configured to control the information output unit 322 based on the planned affiliated supplementary facility so that the affiliated scheduled supplementary facility is displayed on the information output unit 322. . According to such a configuration, the prediction accuracy of the replenishment waiting time by the driver can be improved.
- the control unit 328 determines whether the vehicle 351 is based on the affiliated scheduled replenishment facility (or the number of drive type vehicles for each possible travel distance) and the associated drive type speed. You may estimate the supply waiting time in the energy supply facility which is going to receive energy supply.
- the control unit 328 is configured to control the information output unit 322 based on the replenishment waiting time of the vehicle 351 so that the replenishment waiting time of the vehicle 351 is displayed on the information output unit 322. May be. According to such a configuration, the driver of the vehicle 351 can acquire the supply waiting time. Therefore, the driver can receive replenishment at an appropriate energy replenishment facility such as an energy replenishment facility with a short replenishment waiting time.
- control unit 328 may estimate the replenishment waiting time of the vehicle 351 for each of the plurality of energy replenishment facilities, and estimate the energy replenishment facility that the vehicle 351 should receive energy replenishment based on the estimation result. For example, the control unit 328 may estimate that one energy supply facility with the shortest supply waiting time is the energy supply facility where the vehicle 351 should receive energy supply. In this case, the control unit 328 may be configured to control the information output unit 322 based on the estimated energy supply facility so as to recommend receiving the supply at the estimated energy supply facility. Good.
- the distance between the point O and the charging facility SA1 is 30 km
- the number of vehicles of the same drive type in the section is five
- the travelable speed in the section is 100 km
- the section of the charging facilities SA1 and SA2 The distance is 30 km
- the number of vehicles of the same type of driving in the section is 30,
- the traveling speed of the section is 80 km
- the current number of empty facilities in the charging facilities SA1 and SA2 is 10
- the maximum number of vehicles that can be replenished is 10 ing.
- the control unit 328 estimates that the replenishment waiting time occurs at the charging facility SA2, while it is estimated that the replenishment waiting time does not occur at the charging facility SA1.
- the control unit 328 is based on the one energy supply facility so that the information output unit 322 displays that it is recommended to receive the supply at the charging facility SA1.
- the information output unit 322 is controlled.
- the driver of the vehicle 351 can automatically acquire an appropriate energy supply facility such as an energy supply facility with a short supply waiting time.
- produces, and the energy supply facility in which a supply waiting time does not generate
- a balloon balloon
- an energy supply facility where a supply waiting time occurs may be displayed in a dangerous color (for example, red), and an energy supply facility where no supply waiting time occurs may be displayed in a safe color (for example, blue).
- a balloon (balloon) display or the like may be used to visually guide to an appropriate energy supply facility, or a balloon (balloon) displayed on the information output unit 322 or a balloon displayed according to the length of the waiting time. You may change the size, color, and height of the energy supply facility. Moreover, you may display the supply waiting time in the energy supply facility which was initially planned.
- the control unit 328 displays the vehicle number reliability.
- the information output unit 322 may be controlled in consideration of the above. For example, if the charging waiting time (number of units waiting to be charged) at the charging facility SA2 is 3, and the reliability of the number of vehicles is 5, the message “SA2 is expected to wait for 3 units” is displayed. If the number of vehicles is 3, the message “There is a possibility of waiting for 3 units in SA2” is displayed. If the number of vehicles is 1, the number of vehicles is estimated to be “3. May be displayed.
- control unit 328 changes the content displayed on the information output unit 322 according to the reliability of the number of vehicles (in this case, the expression relating to the certainty of estimation), so that the driver of the vehicle 351 can appropriately You can know the possibility of receiving supplements at various energy supply facilities.
- the information output unit 322 when the affiliated replenishment scheduled facility is different from the energy replenishment plan such as the charging plan established at this office, the information output unit 322 generates a warning that the plan is changed and a guidance to the affiliated replenishment scheduled facility.
- the control unit 328 may control the information output unit 322 to do so.
- the control unit 328 may estimate the number of drive type vehicles using the drive type ratio as in the modification of the second embodiment.
- the information output unit 322 performs display has been described.
- the present invention is not limited to this, and the information output unit 322 may perform notification instead of the display, or The information output unit 322 may perform both display and notification.
- a sound alarm may be output at an appropriate timing, or a sound that guides to an appropriate energy supply facility may be output.
- control unit 328 controls the information output unit 322 based on various types of information.
- the present invention is not limited to this, and controls the vehicle 351 itself, such as traveling of the vehicle 351. It may be.
- control unit 328 takes into account the weather information and counts the number of vehicles belonging to the same drive for each travelable distance and the schedule for supplying the same vehicle, as in the first embodiment. Facilities or replenishment waiting times may be estimated. Similarly to the second embodiment, the control unit 328 estimates the number of vehicles belonging to the same driving category, the facility to be supplied at the same time, or the replenishment waiting time for each travelable distance in consideration of the information on the charging port or the charging method. May be.
- the vehicle 351 is assumed to be a non-probe vehicle.
- the present invention is not limited to this, and the vehicle 351 may have a configuration equivalent to the probe vehicle 151 including the vehicle-side system 101 described in the first embodiment and the like. That is, the vehicle side system 301 may include a vehicle side transmission unit that transmits probe information including own vehicle position information, own vehicle speed information, and drive type information of the vehicle 351 to the center side system 201.
- the vehicle-side system mainly receives the traffic situation from the center-side system outside the vehicle, but the traffic situation is not only from the center-side system but also FM multiplex broadcasting. May be received from roadside facilities outside the vehicle such as VICS traffic information, radio beacons, optical beacons, etc., or road-to-vehicle communication infrastructure outside the vehicle providing DSRC or other traffic conditions. Moreover, you may input a traffic condition from communication between vehicles or another communication means.
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Abstract
Description
図1は、本発明の実施の形態1に係る車両側システム101及びセンター側システム201を備えるプローブ情報システムの構成を示すブロック図である。
以上の説明では、センター側システム201が、駆動種別走行可能速度を含む配信交通状況を送信した。そして、各車両(各車両側システム101)が、複数の駆動種別についての駆動種別走行可能速度から適切な走行可能速度を取得した。
実施の形態1の変形例2では、センター側システム201が、充電施設(エネルギー補給施設)での充電(エネルギー補給)に関する渋滞情報(以下「補給渋滞情報」と記すこともある)を推定するものとなっている。
実施の形態1の変形例3においても、センター側システム201が、充電施設(エネルギー補給施設)での充電(エネルギー補給)に関する渋滞情報(補給渋滞情報)を推定するものとなっている。
実施の形態1では、駆動種別走行可能速度の推定について主に説明した。本発明の実施の形態2は、当該駆動種別走行可能速度に基づいて、エネルギー補給を受けるまでの補給待ちを推定することについて説明する。なお、本実施の形態に係るプローブ情報システムのブロック構成は、実施の形態1に係るプローブ情報システムのブロック構成(図1)と同じである。以下、本実施の形態の説明において、実施の形態1で説明した構成要素と同一または類似するものについては同じ符号を付して説明を省略する。また、本実施の形態に係る車両側システム101の処理は、実施の形態1で説明した処理と同じであるため、その説明を省略する。
上述したように、エネルギー補給計画である充電計画を用いれば、一のエネルギー補給施設である一の充電施設で補給を受けようとする車両数(図12及び図13の表の右側一列)を推定することができる。しかしながら、実際の運用上では、センター側システム201は、エネルギー補給計画を含むプローブ情報を受信できないこともある。そこで、以下、エネルギー補給計画を用いずに、補給待ち時間の予測精度を高めることが可能なプローブ情報システムについて説明する。
次に、プローブ車両151についての補給待ち時間の推定を行う構成について説明する。なお、推定対象の一のプローブ車両151を、「推定対象車両151」と記すこともあり、推定対象の一のエネルギー補給施設を、「推定対象補給施設」と記すこともある。
図15は、実施の形態2の変形例に係る車両側システム101及びセンター側システム201を備えるプローブ情報システムの構成を示すブロック図である。本変形例では、センター側システム201の交通状況推定部217が、駆動種別情報を含むプローブ情報を取得できない場合であっても、駆動種別車両数を推定することが可能となっている。
図17は、本発明の実施の形態3に係るプローブ情報システムの構成を示すブロック図である。以上の実施の形態1,2においては、センター側システム201から配信交通状況が送信されるまでの処理を中心に説明した。本実施の形態では、その配信交通状況を受信して利用する車両側システム301について説明する。
Claims (9)
- プローブ車両に搭載されている車両側システムから交通情報のアップロードを受ける、プローブ情報システムにおけるセンター側システムであって、
前記プローブ車両の位置に関する情報である車両位置情報、前記プローブ車両の駆動種別に関する情報である駆動種別情報、及び、前記プローブ車両の速度に関する情報である車両速度情報を前記車両側システムから受信する受信部と、
前記受信部で受信した前記車両位置情報、前記駆動種別情報及び前記車両速度情報に基づいて、各道路上における車両の前記駆動種別ごとの走行可能速度である駆動種別走行可能速度を含む交通状況を推定する交通状況推定部と、
前記交通状況推定部で推定された前記交通状況を外部に送信する送信部、または当該交通状況を外部からのアクセスによって閲覧可能とする閲覧部と
を備える、センター側システム。 - 請求項1に記載のセンター側システムであって、
前記プローブ車両は、エネルギーの消費を抑制して走行することが可能な消費抑制走行モードを有する消費抑制走行可能車両を含み、
前記受信部は、
前記消費抑制走行可能車両の前記消費抑制走行モードのオンまたはオフに関する消費抑制走行モード情報を、前記消費抑制走行可能車両の前記車両側システムから受信し、
前記交通状況推定部は、
前記受信部で受信した前記消費抑制走行モード情報を加味して前記交通状況を推定する、センター側システム。 - 請求項1に記載のセンター側システムであって、
前記交通状況推定部は、
自身が推定した前記駆動種別走行可能速度に基づいて、車両が所定時間内に到達可能な範囲である到達可能範囲を前記駆動種別ごとに推定し、当該到達可能範囲を前記交通状況に含める、センター側システム。 - 請求項1に記載のセンター側システムであって、
自身が推定した複数の前記駆動種別についての前記駆動種別走行可能速度のうち、最大の前記駆動種別走行可能速度を前記交通状況に含める、センター側システム。 - 請求項1に記載のセンター側システムであって、
前記受信部は、
前記プローブ車両におけるブレーキ操作の頻度を前記車両側システムから受信し、
前記交通状況推定部は、
前記受信部で受信した前記ブレーキ操作の頻度を加味して前記交通状況を推定する、センター側システム。 - 請求項1に記載のセンター側システムであって、
前記交通状況推定部は、
自身が推定した前記駆動種別走行可能速度に基づいて、エネルギー補給施設でのエネルギー補給に関する渋滞情報を推定し、当該渋滞情報を前記交通状況に含める、センター側システム。 - 車両外部から送信された、各道路上における車両の駆動種別ごとの走行可能速度である駆動種別走行可能速度を受信する車両側受信部と、
表示または報知を行う情報出力部と、
前記車両側受信部で受信した前記車両の前記駆動種別走行可能速度に基づいて、前記車両または前記情報出力部を制御する制御部と
を備える、車両側システム。 - 請求項7に記載の車両側システムであって、
前記車両はプローブ車両であり、
前記プローブ車両の車両位置情報を検出する位置検出部と、
前記プローブ車両の車両速度情報を検出する速度検出部と、
前記位置検出部で検出された前記車両位置情報と、前記速度検出部で検出された前記車両速度情報と、前記プローブ車両の駆動種別に関する情報である駆動種別情報とを車両外部に送信する車両側送信部と
をさらに備える車両側システム。 - 請求項7に記載の車両側システムであって、
前記車両の前記駆動種別の前記駆動種別走行可能速度に基づいて、前記車両が走行すべき走行経路を探索する経路探索部をさらに備え、
前記制御部は、
前記走行経路を加味して前記制御を行う、
車両側システム。
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