WO2012069909A2 - Système de fourniture d'informations et procédé de fourniture d'informations - Google Patents

Système de fourniture d'informations et procédé de fourniture d'informations Download PDF

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Publication number
WO2012069909A2
WO2012069909A2 PCT/IB2011/002787 IB2011002787W WO2012069909A2 WO 2012069909 A2 WO2012069909 A2 WO 2012069909A2 IB 2011002787 W IB2011002787 W IB 2011002787W WO 2012069909 A2 WO2012069909 A2 WO 2012069909A2
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WO
WIPO (PCT)
Prior art keywords
information
vehicle
sight
imaginary
poi
Prior art date
Application number
PCT/IB2011/002787
Other languages
English (en)
Other versions
WO2012069909A3 (fr
Inventor
Shojiro Takeuchi
Satomi Yoshioka
Original Assignee
Toyota Jidosha Kabushiki Kaisha
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toyota Jidosha Kabushiki Kaisha filed Critical Toyota Jidosha Kabushiki Kaisha
Publication of WO2012069909A2 publication Critical patent/WO2012069909A2/fr
Publication of WO2012069909A3 publication Critical patent/WO2012069909A3/fr

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
    • G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
    • G01C21/34—Route searching; Route guidance
    • G01C21/36—Input/output arrangements for on-board computers
    • G01C21/3679—Retrieval, searching and output of POI information, e.g. hotels, restaurants, shops, filling stations, parking facilities

Definitions

  • the invention relates to an information providing system and an information providing method.
  • JP-A-2009-186431 an information providing system that displays information about a facility located within a predetermined range from a host vehicle position.
  • the navigation system is formed of a current position detecting unit, a map data storage unit, a facility information database, an input operation unit, an ECU and an output unit.
  • the ECU calculates the distances from a current position of the vehicle, detected by the current position detecting unit, to facilities on the basis of the current position and information about the locations of the facilities, stored in the facility information database.
  • the ECU overwrites and updates information about the distances to the facilities, stored in the facility information database, with information about the calculated distances to the facilities.
  • facilities that are appropriate to the condition of the search item are displayed on a display in an ascending order of distance on the basis of the information about the distances to the facilities, stored in the facility information database.
  • POI information facility information to be displayed does not reflect a driver's intention.
  • point of interest (POI) information is information about a specific point in which the driver is interested or a specific point in which the driver is highly likely to become interested (POI).
  • POI information includes information about shops in which the driver is highly likely to become interested while the vehicle is running, information about traffic congestion and traffic accident that have occurred near a road on which the vehicle is running or a road ahead of the vehicle, and the like.
  • the invention provides an information providing system and an information providing method that are able to provide POI information that reflects a driver's intention.
  • a first aspect of the invention relates to an information providing system.
  • the information providing system includes: a direction acquisition unit that acquires a direction of an imaginary line of sight on the basis of an operation performed by a driver of a vehicle; a vehicle information acquisition unit that acquires vehicle information about the vehicle; a search range determining unit that determines a search range to be searched for POI information to be provided to the vehicle on the basis of an imaginary sight line direction, which is the direction of the imaginary line of sight, and a searching unit that searches the search range, determined by the search range determining unit, for POI information to be provided to the vehicle.
  • the search range to be searched for POI information to be provided to the vehicle is determined on the basis of the direction of the imaginary line of sight, specified by the driver of the vehicle, in addition to the vehicle information.
  • the search range to be searched for POI information to be provided to the vehicle is determined on the basis of the direction of the imaginary line of sight, specified by the driver of the vehicle, in addition to the vehicle information.
  • the direction acquisition unit may include map information, and may acquire the direction specified on the map information by the driver of the vehicle as the imaginary sight line direction. Thus, it is possible to clearly determine the search range.
  • the search range may be a range that is placed between two half lines extending from a position of the vehicle and that is shorter than or equal to a predetermined distance from the position of the vehicle on a map, and the imaginary line of sight may be included in the range that is placed between the two half lines.
  • the search range may be a range that is placed between two half lines extending from a position of the vehicle and that is shorter than or equal to a predetermined distance from the position of the vehicle on a map, and the imaginary line of sight may be included in the range that is placed between the two half lines.
  • At least one of an angle, formed by the two half lines, and the predetermined distance may be determined on the basis of the vehicle information. By so doing, it is possible to accurately determine the search range.
  • a second aspect of the invention relates to an information providing system.
  • the information providing system includes: a receiving unit that receives an imaginary sight line direction and a vehicle position, acquired by each of a plurality of vehicles, from each of the plurality of vehicles; an imaginary sight line calculation unit that calculates an imaginary line of sight of each of the plurality of vehicles on the basis of the imaginary sight line direction and vehicle position of each of the plurality of vehicles, received by the receiving unit; a search point determining unit that determines a search point to be searched for POI information on the basis of the plurality of imaginary lines of sight calculated by the imaginary sight line calculation unit; a searching unit that searches the search point, determined by the search point determining unit, for POI information; and a distributing unit that distributes the POI information, found by the searching unit, to the plurality of vehicles.
  • the search point to be searched for POI information is determined on the basis of the imaginary lines of sight of the plurality of vehicles.
  • the search point to be searched for POI information is determined on the basis of the imaginary lines of sight of the plurality of vehicles.
  • the search point determining unit may determine the search point on the basis of a plurality of imaginary lines of sight, calculated by the imaginary sight line calculation unit within a predetermined period of time. Thus, it is possible to search for highly real-time POI information.
  • the searching unit may search for supplementary information to be attached to the POI information through an electrical communication line. By so doing, it is possible to provide highly value-added information.
  • a third aspect of the invention relates to an information providing method.
  • the information providing method includes: acquiring a direction of an imaginary line of sight on the basis of an operation performed by a driver of a vehicle; acquiring vehicle information about the vehicle; determining a search range to be searched for POI information to be provided to the vehicle on the basis of an imaginary sight line direction, which is the direction of the imaginary line of sight, and the vehicle information; and searching the determined search range for POI information to be provided to the vehicle.
  • the direction specified on the map information by the driver of the vehicle may be acquired as the imaginary sight line direction.
  • the search range may be a range that is placed between two half lines extending from a position of the vehicle and that is shorter than or equal to a predetermined distance from the position of the vehicle on a map, and the imaginary line of sight may be included in the range that is placed between the two half lines.
  • At least one of an angle, formed by the two half lines, and the predetermined distance may be determined on the basis of the vehicle information.
  • the angle formed by the two half lines may be determined on the basis of a vehicle speed of the vehicle.
  • the predetermined distance may be determined on the basis of an altitude of the vehicle.
  • a turn direction identified from a driver's turn signal lever operation may be automatically specified as the direction of the imaginary line of sight.
  • a configuration may be employed, in which, when the driver finds a POI, a detected line of sight is specified as the direction of the imaginary line of sight, which is specified by the driver of the vehicle.
  • a driver's voice may be input to specify the direction of the line of sight, which is specified by the driver of the vehicle.
  • a fourth aspect of the invention relates to an information providing method.
  • the information providing method includes: receiving an imaginary sight line direction and a vehicle position, acquired by each of a plurality of vehicles, from each of the plurality of vehicles; calculating an imaginary line of sight of each of the plurality of vehicles on the basis of the received imaginary sight line direction and vehicle position of each of the plurality of vehicles; determining a search point to be searched for POI information on the basis of the plurality of calculated imaginary lines of sight; searching the determined search point for POI information; and distributing the found POI information to the plurality of vehicles.
  • the search point may be determined on the basis of a plurality of imaginary lines of sight, calculated within a predetermined period of time.
  • the information providing method may further include searching for supplementary information to be attached to the POI information through an electrical communication line.
  • FIG. 1 is a block diagram that shows an information providing system according to a first embodiment of the invention
  • FIG. 2 is a schematic view that shows a search range to be searched by the information providing system according to the first embodiment of the invention for POI information;
  • FIG. 3 is a flowchart that shows the operations of the information providing system according to the first embodiment of the invention
  • FIG 4 is a schematic view that illustrates a method of providing predicted POI information
  • FIG. 5 is a block diagram that shows an information providing system according to a second embodiment of the invention.
  • FIG 6 is a flowchart that shows the operations of the information providing system according to the second embodiment of the invention.
  • FIG. 7 is a schematic view that shows a method of distributing distribution POI information, which is executed by the information providing system according to the second embodiment of the invention.
  • FIG. 8 is a schematic view that illustrates a method of excluding an unnecessary intersection point
  • FIG. 9 is a schematic view that illustrates a method of attaching information, updated from a mobile terminal, to distribution POI information.
  • FIG. 1 is a block diagram that shows an information providing system according to a first embodiment of the invention.
  • the information providing system 1 is to search for POI information on the basis of a driver's request and then to provide the POI information to the driver.
  • the information providing system 1 includes an in-vehicle device 2 and an information management device 3.
  • the in-vehicle device 2 is mounted on a vehicle M.
  • the information management device 3 is provided for a center Z.
  • the in-vehicle device 2 includes a car navigation 4, an electronic control unit (ECU) 5 and a vehicle communication unit 6.
  • the car navigation 4 functions as a direction acquisition unit, and includes a touch panel 41 and a vehicle information acquisition unit 42. Not only map information stored in the car navigation 4 but also POI information, or the like, is displayed on the touch panel 41.
  • the touch panel 41 functions as a monitor.
  • FIG. 2 is a schematic view that shows a search range to be searched by the information providing system according to the present embodiment for POI information.
  • the range Q indicates a range displayed on the touch panel 41.
  • the driver touches and specifies a point P located in the same direction as the direction in which the building B is present with respect to the vehicle M on the touch panel 41.
  • the touch panel 41 detects and acquires the point specified by the driver. In this way, the touch panel 41 also functions as a sensor for acquiring a direction of an imaginary line of sight on the basis of an operation performed by the driver.
  • the touch panel 41 calculates and acquires a driver's line of sight to the building B that is a POI, that is, the imaginary sight line direction that is the direction of an imaginary line of sight I, on the basis of the positional relationship between the vehicle M and the point P.
  • the vehicle information acquisition unit 42 acquires the current position of the vehicle ' M oh the basis of, for example, GPS signals transmitted from GPS satellites. In addition, the vehicle information acquisition unit 42 acquires time from a clock (not shown) provided for the vehicle M. The vehicle information acquisition unit 42 acquires a travelling direction and a vehicle speed on the basis of a travel history of the vehicle M, an elapsed time acquired from the clock, and the like. In addition, the vehicle information acquisition unit 42 acquires the type of a road on which the vehicle M is running on the basis of the map information and current position stored in the car navigation 4.
  • the car navigation 4 is connected to the ECU 5, and transmits imaginary sight line direction information about the imaginary sight line direction and vehicle information, such as the current position, travelling direction, road type, vehicle speed and time of the vehicle M, acquired by the vehicle information acquisition unit 42, to the ECU 5.
  • the ECU 5 is used to control the vehicle M, and is connected to the vehicle communication unit 6.
  • the ECU 5 transmits the imaginary sight line direction information and vehicle information, acquired from the car navigation 4, to the vehicle communication unit 6.
  • the vehicle communication unit 6 transmits these pieces of information, received from the ECU 5, to the information management device 3.
  • the information management device 3 is used to search for POI information on the basis of the information transmitted from the vehicle M and then to provide the found POI information to the vehicle M.
  • the information management device 3 includes a center communication unit 7, a search range determining unit 8, a POI information searching unit 9, a table database (hereinafter, referred to as "table DB") 10 and a POI information database (hereinafter, referred to as "POI information DB") 11.
  • the center communication unit 7 serves as a receiving unit and a distributing unit.
  • the POI information searching unit 9 serves as a searching unit.
  • the center communication unit 7 is able to exchange information with the vehicle communication unit 6, and receives the imaginary sight line direction information and vehicle information transmitted from the vehicle communication unit 6.
  • the center communication unit 7 is connected to the search range determining unit 8, and transmits the imaginary sight line direction information and the vehicle information to the search range determining unit 8.
  • the search range determining unit 8 determines a search range to be searched for POI information to be provided to the vehicle M on the basis of the received imaginary sight line direction information and vehicle information.
  • the search range determining unit 8 includes an imaginary sight line calculation unit 81, a search angle determining unit 82 and a search distance determining unit 83.
  • the imaginary sight line calculation unit 81 calculates an imaginary line of sight I of the vehicle M on the basis of the received imaginary sight line direction and current position. As shown in FIG 2, the imaginary line of sight I of the vehicle M is calculated by drawing a straight line along the imaginary sight line direction from the current position of the vehicle M.
  • the search angle determining unit 82 is used to determine an angle a required to determine the search range on the basis of the received road type and vehicle speed.
  • the angle a is an angle formed by two half lines HI and H2 that extend from the current position of the vehicle M in line symmetry with respect to the imaginary line of sight I.
  • the search angle determining unit 82 is connected to the table DB 10.
  • the table DB 10 stores a search angle determining table that defines the correlation between the vehicle speed and the angle a. Two types of the search angle determining tables are stored, one for an ordinary road and the other one for an expressway. Because it is presumable that the field of vision of the driver narrows as the vehicle speed increases, so the angle a is reduced as the vehicle speed increases.
  • the search angle determining unit 82 loads the search angle determining table corresponding to the road type from the table DB 10. Then, the search angle determining unit 82 determines the angle a corresponding to the vehicle speed from the search angle determining table.
  • the search distance determining unit 83 is used to identify the altitude of the vehicle M, from the contour line information of the map information on the basis of the received current position and then to determine a distance ⁇ required to determine the search range on the basis of the altitude.
  • the altitude means the altitude of a road on which a vehicle is running.
  • the distance ⁇ is a distance that indicates an upper limit of the search range from the current position of the vehicle M.
  • the search distance determining unit 83 is connected to the table DB 10.
  • the table DB 10 stores a search distance determining table that defines the correlation between the altitude and the distance ⁇ . Two types of the search distance determining tables are stored, one for an ordinary road and the other one for an expressway.
  • the search distance determining unit 83 loads the search distance determining table corresponding to the road type from the table DB 10. Then, the search distance determining unit 83 determines the distance ⁇ corresponding to the altitude from the search distance determining table.
  • the search range S to be searched for POI information to be provided to the vehicle M is determined on the basis of the imaginary line of sight I calculated by the imaginary sight line calculation unit 81, the angle a determined by the search angle determining unit 82 and the distance ⁇ determined by the search distance determining unit 83.
  • buildings A, B and C located within the search range S are targets to be searched for POI information, but buildings D and E located outside the search range S are not targets to be searched for POI information.
  • the search range determining unit 8 is connected to the POI information searching unit 9, and transmits the determined search range S to be searched for POI information to the POI information searching unit 9.
  • the POI information searching unit 9 is connected to the POI information DB 11 and the center communication unit 7.
  • the POI information DB 11 stores a plurality of pieces of POI information of various points.
  • the POI information searching unit 9 searches the POI information DB 11 within the received search range S for POI information to be provided to the vehicle. Then, the POI information searching unit 9 transmits the found POI information to the center communication unit 7.
  • FIG. 3 is a flowchart that illustrates the operations of the information providing system according to the first embodiment of the invention.
  • the driver of the vehicle M finds a POI, such as a point and a facility, in which the driver is interested (S10). Then, the driver touches a point in the same direction as the direction in which the POI is located with respect to the vehicle M on the touch panel 41, and the specified imaginary sight line direction is acquired by the touch panel 41 (Sll). In step Sll, the operations of the information providing system 1 according to the present embodiment are started. The imaginary sight line direction information about the acquired imaginary line of sight is transmitted to the ECU 5.
  • a POI such as a point and a facility
  • the vehicle information acquisition unit 42 acquires vehicle information, such as the current position, travelling direction, road type, vehicle speed and time of the vehicle M (S12). The acquired vehicle information is transmitted to the ECU 5.
  • vehicle information such as the current position, travelling direction, road type, vehicle speed and time of the vehicle M (S12).
  • the acquired vehicle information is transmitted to the ECU 5.
  • the ECU 5 When the ECU 5 receives the imaginary sight line direction information and the vehicle information, the ECU 5 transmits these pieces of information to the vehicle communication unit 6, and the vehicle communication unit 6 transmits these pieces of information to the center Z (S13).
  • the center communication unit 7 of the center Z receives the imaginary sight line direction information and vehicle information transmitted from the vehicle communication unit 6, the center communication unit 7 transmits these pieces of information to the search range determining unit 8.
  • the search range determining unit 8 receives the imaginary sight line direction and the current position, the imaginary sight line calculation unit 81 of the search range determining unit 8 calculates the imaginary line of sight (S14).
  • the search range determining unit 8 receives the road type and the vehicle speed
  • the search angle determining unit 82 of the search range determining unit 8 loads the search angle determining table corresponding to the road type from the table DB 10. Then, the search range determining unit 8 determines the angle a corresponding to the vehicle speed from the search angle determining table (S15).
  • the search distance determining unit 83 of the search range determining unit 8 identifies the altitude, at which the vehicle M is running, from the map information on the basis of the received current position.
  • the search distance determining unit 83 loads the search distance determining table corresponding to the road type from the table DB 10. Then, the search distance determining unit 83 determines the distance ⁇ corresponding to the altitude from the search distance determining table (SI 6).
  • the search range determining unit 8 determines the search range to be searched for POI information on the basis of the imaginary line of sight calculated in step S14, the angle a determined in step S15 and the distance ⁇ determined in step S16 (S17).
  • the determined search range is transmitted from the search range determining unit 8 to the POI information searching unit 9.
  • POI information searching unit 9 searches the POI information DB 11 within the search range for POI information to be provided to the vehicle M, and checks whether there is POI information to be provided to the vehicle M (S18).
  • the POI information searching unit 9 sorts the found pieces of POI information in ascending order of distance from the position of the vehicle M, and sets the sorted pieces of POI information as transmit data (S19).
  • the set transmit data is transmitted from the POI information searching unit 9 to the center communication unit 7.
  • step S18 when it is determined in step S18 that there is no POI information to be provided to the vehicle M, the POI information searching unit 9 sets "no data" as transmit data (S20). The set transmit data is transmitted from the POI information searching unit 9 to the center communication unit 7.
  • the center communication unit 7 transmits the transmit data to the vehicle communication unit 6 (S21).
  • the vehicle communication unit 6 transmits the transmit data to the ECU 5.
  • the ECU 5 receives the transmit data
  • the ECU 5 transmits the transmit data to the car navigation 4, and the found POI information is displayed on the touch panel 41.
  • the imaginary sight line direction that is specified by the driver of the vehicle M on the touch panel 41 is acquired by the car navigation 4, and the vehicle information, such as the current position, travelling direction, road type, vehicle speed and time of the vehicle M, is acquired by the vehicle information acquisition unit 42.
  • the search range to be searched for POI information to be provided to the vehicle M is determined by the search range determining unit 8 of the information management device 3 on the basis of these pieces of information. Then, the determined search range is searched by the POI information searching unit 9 for POI information to be provided to the vehicle M, and the found POI information is provided to the vehicle M. In this way, with the information providing system 1, the search range to be searched for POI information to be provided to the vehicle M is determined on the basis of the imaginary sight line direction acquired on the basis of an operation performed by the driver of the vehicle M in addition to the vehicle information about the vehicle M. Thus, it is possible to provide POI information that reflects a driver's intention.
  • the car navigation 4 includes the map information, the map information is displayed on the touch panel 41, and the imaginary sight line direction of the vehicle M is specified by the driver of the vehicle M on the map information displayed on the touch panel 41.
  • the driver is able to easily specify the imaginary sight line direction.
  • the search range is placed between two half lines HI and H2 that extend from the current position of the vehicle M in line symmetry with respect to the imaginary line of sight I on the map, and is shorter than or equal to a predetermined distance ⁇ from the current position of the vehicle M, and the imaginary line of sight I is included in the range placed between the two half lines.
  • the angle a formed by the two half lines HI and H2 is determined on the basis of the vehicle speed of the vehicle M.
  • the altitude of the vehicle M is identified from the current position of the vehicle M, and the distance ⁇ that indicates the upper limit of the search range from the current position of the vehicle M is determined on the basis of the altitude.
  • the vehicle M may have already passed through the point of the POI information displayed on the touch panel 41 when the POI information is displayed. Therefore, it is desirable to provide the vehicle M with a POI information storage unit to make it possible to store POI information, transmitted from the center communication unit 7, in the POI information storage unit.
  • the POI information may be displayed on the touch panel 41 in advance, and the POI information about the point in which the driver has become interested before may be checked in advance.
  • FIG 4 is a schematic view that illustrates a method of providing predicted POI information.
  • the driver of the vehicle M that is running on a route R3 intends to turn to the right at an intersection and then to run on a route R4, the driver of the vehicle M operates the turn signal lever before the intersection.
  • the turn signal lever operation is detected by the ECU 5, and the like, and the right-turn direction detected from the turn signal lever operation is automatically specified as the imaginary sight line direction.
  • the direction 45 degrees rightward with respect to the travelling direction of the vehicle M is specified as the imaginary sight line direction.
  • the following operations are similar to those in step S12 and the following steps in FIG. 3.
  • POI information such as traffic congestion information and event information
  • the driver of the vehicle M is able to check POI information in advance, and is able to take measures, such as cancelling a right turn at the intersection.
  • FIG 5 is a block diagram that shows the information providing system according to the second embodiment of the invention.
  • the information providing system 1A is used to extract POI information that is highly frequently required by a plurality of vehicles and then to distribute the POI information as distribution POI information to vehicles that run near the corresponding POI.
  • the information providing system 1A is formed of a plurality of vehicles M and an information management device 3A.
  • the information management device 3A is able to communicate information via a network 12 that is an electrical communication line.
  • the information management device 3A differs from the information management device 3 of the information providing system 1 according to the first embodiment in that an imaginary sight line processing unit 13 and a search point determining unit 14 are provided.
  • the center communication unit 7 receives imaginary sight line direction information and vehicle information, acquired by each of the plurality of vehicles M, from each of the plurality of vehicles M. Then, the imaginary sight line determining unit 81 calculates the imaginary line of sight of each of the plurality of vehicles M on the basis of the imaginary sight line direction and current position of each of the plurality of vehicles M, received by the center communication unit 7.
  • the imaginary sight line processing unit 13 is connected to the search range determining unit 8, arid stores imaginary lines of sight, calculated by the imaginary sight line calculation unit 81, for each predetermined period of time.
  • the imaginary sight line processing unit 13 is connected to the search point determining unit 14, and transmits the plurality of imaginary lines of sight, stored for each predetermined period of time, to the search point determining unit 14.
  • the search point determining unit 14 arranges the plurality of received imaginary lines of sight on the map, and extracts multiple intersections of the plurality of imaginary lines of sight. Then, a point to be searched for POI information is determined from among the extracted intersections.
  • the network 12 is connected to the POI information searching unit 9.
  • the POI information searching unit 9 is able to search information on the Internet through the network 12.
  • FIG. 6 is a flowchart that shows the operations of the information providing system according to the second embodiment of the invention.
  • FIG. 7 is a schematic view that shows a method of distributing distribution POI information, which is executed by the information providing system according to the second embodiment of the invention.
  • the map information is divided into a plurality of areas.
  • the operations of the information providing system 1A begin with that the imaginary sight line processing unit 13 identifies an area that is frequently required to search for POI information per time period (S30).
  • Step S30 is performed in such a manner that the imaginary sight line processing unit 13 identifies an area having a large number of imaginary lines of sight passing therethrough from information about the plurality of imaginary lines of sight stored for each predetermined period of time.
  • the imaginary sight line processing unit 13 extracts the imaginary lines of sight within the identified area (S31). The extracted imaginary lines of sight are transmitted to the search point determining unit 14.
  • the search point determining unit 14 When the search point determining unit 14 receives the imaginary lines of sight, the search point determining unit 14 arranges the received imaginary lines of sight on the map (S32). [0076] The search point determining unit 14 extracts multiple intersection points of the imaginary lines of sight arranged on the map (S33). For example, in FIG. 7, the point of a building F is extracted as one of the intersection points.
  • the search point determining unit 14 determines whether the ratio of the number of the imaginary lines of sight that pass through each intersection point with respect to the total number of the imaginary lines of sight that pass through the identified area is higher than or equal to a predetermined ratio X% (S34). This is because the intersection point of which the number of the imaginary lines of sight is relatively small with respect to the total number of the imaginary lines of sight that pass through the identified area is not regarded as a POI of which the POI information is highly frequently required and, therefore, the intersection point is excluded from targets to be searched for POI information.
  • the predetermined ratio X% is desirably varied on the basis of the total number of the imaginary lines of sight that pass through the identified area. For example, when the total number of the imaginary lines of sight that pass through the identified area is about 50 to 100, the predetermined ratio X is about 10%.
  • step S34 When it is determined in step S34 that the number of the imaginary lines of sight that pass through an intersection point is higher than or equal to the predetermined ratio X%, the search point determining unit 14 determines whether the total number of the imaginary lines of sight that pass through the area that includes the intersection point is smaller than or equal to a predetermined number N (S35). This is because, when the total number of the imaginary lines of sight that pass through the identified area is relatively small, the process of step S36 described later is required.
  • step S35 When it is determined in step S35 that the total number of the imaginary lines of sight that pass through the identified area is smaller than or equal to the predetermined number, the search point determining unit 14 determines whether the differences among the imaginary sight line directions fall within 90 degrees in order to check whether the extracted intersection points include an unnecessary intersection point (S36). This is because, when the number of the imaginary lines of sight that pass through the identified area is relatively small, even when there are intersection points, the intersection points may include an unnecessary intersection point that should not be searched for POI information.
  • FIG. 8 is a schematic view that illustrates a method of excluding an unnecessary intersection point.
  • the imaginary lines of sight of vehicles Ml, M2 and M3 pass through the same area, and intersection points are present at two points, that is, a building G and a building J. Between these intersection points, the intersection point at the building G is the intersection point of the imaginary lines of sight of the vehicles Ml and M2 that run on the same route Rl, so the intersection point at the building G is highly likely to be required by the drivers of both vehicles for POI information.
  • an angle ⁇ that is formed by a line that connects the vehicle Ml and the building G and a line that connects the vehicle M2 and the building G, that is, the difference in direction ⁇ between the imaginary lines of sight of the vehicle Ml and vehicle M2, is highly likely to be smaller than or equal to 90°.
  • the building G located at the intersection point at which the difference in direction between the imaginary lines of sight is smaller than or equal to 90° is determined as a target to be searched for POI information.
  • the intersection point at the building J is the intersection point of the imaginary lines of sight of the vehicle Ml and vehicle M3 that respectively run on the routes Rl and R2 of which the travelling directions are opposite, so the points required by the drivers of the respective vehicles for POI information are highly likely to be different.
  • the driver of the vehicle Ml does not require POI information about the building J but requires POI information about the building G closer to the vehicle Ml.
  • the difference in direction ⁇ 2 between the imaginary lines of sight of the vehicle Ml and vehicle M3 is highly likely to be larger than 90°.
  • the intersection point of which the difference in direction between the imaginary lines of sight is larger than 90° is not determined as a target to be searched for POI information.
  • step S35 when it is determined in step S35 that the total number of the imaginary lines of sight that pass through the identified area is larger than N and it is determined in step S36 that the difference in direction between the imaginary lines of sight is smaller than or equal to 90°, the search point determining unit 14 determines the intersection point as a search point, and transmits the search point to the POI information searching unit 9. Then, the POI information searching unit 9 searches the POI information DB 11 to determine whether there is POI information at the received search point (S37).
  • the POI information searching unit 9 transmits the found POI information to the center communication unit 7 as distribution POI information. Then, when the center communication unit 7 receives the distribution POI information, the center communication unit 7 distributes the distribution POI information to vehicles that run in the area that includes the search point of the distribution POI information (S38). Then, a series of the operations end.
  • step S34 when it is determined in step S34 that the ratio of the number of imaginary lines of sight that pass through an intersection point is lower than the predetermined ratio X%, when it is determined in step S36 that the difference in direction between the imaginary lines of sight is larger than 90° or when it is determined in step S37 that there is no POI information at the search point, the information providing system 1 A does not distribute distribution POI information for the intersection point, and a series of the operations end.
  • the imaginary sight line direction and current position acquired by each of the plurality of vehicles M are received by the center communication unit 7 from each of the plurality of vehicles M.
  • the imaginary line of sight of each of the plurality of vehicles M is calculated by the imaginary sight line calculation unit 81 on the basis of the received imaginary sight line direction and position of each of the plurality of vehicles M.
  • the search point to be searched for POI information is determined by the search point determining unit 14 on the basis of the plurality of calculated imaginary lines of sight.
  • the determined search point is searched by the POI information searching unit 9 for POI information.
  • the found POI information is distributed by the center communication unit 7 as distribution POI information to vehicles that run in the area that includes the search point to be searched for the POI information.
  • the search point to be searched for POI information is determined on the basis of the imaginary lines of sight of the plurality of vehicles M.
  • POI information at the point on which imaginary lines of sight concentrate is highly likely to be information that a large number of drivers would like to acquire.
  • the search point determining unit 14 determines the search point on the basis of the plurality of imaginary lines of sight, calculated by the imaginary sight line calculation unit 81 within a predetermined period of time. Thus, it is possible to search for highly real-time POI information.
  • the POI information searching unit 9 is able to search the Internet through the network 12 for supplementary information to be attached to the POI information. By so doing, it is possible to provide highly value-added information.
  • highly real-time information on the Internet may be not only information uploaded from a homepage of a shop, or the like, in advance but also information uploaded from a mobile terminal, such as a smart phone and a cellular phone.
  • a position information acquisition function such as a GPS, equipped for a mobile terminal mostly has a low accuracy.
  • FIG. 9 is a schematic view that illustrates a method of attaching information, updated from a mobile terminal, to distribution POI information.
  • the POI information searching unit 9 searches the Internet for supplementary information
  • the POI information searching unit 9 expands the search range from the search point N to a range O shorter than or equal to a predetermined distance from the search point N to thereby make it possible to search for the pieces of information Kl, K2 and K3 even when the position information acquired by the mobile terminal deviates from the search point N.
  • the expanded distance is desirably matched with the accuracy of the position information acquisition function of a general mobile terminal.
  • distribution POI information is displayed on the touch panel 41 together with supplementary information
  • the distribution POI information and the supplementary information are desirably displayed so that they may be distinguished from each other. By so doing, it is possible to recognize which information is uploaded from a mobile terminal among pieces of information displayed on the touch panel 41.
  • the car navigation 4 is used as the direction acquisition unit; instead, a sight line detecting unit that detects a driver's line of sight may be used to be able to specify the line of sight detected by the sight line detecting unit when the driver finds a POI as an imaginary sight line direction.
  • a voice input unit that receives a driver's voice may be used to be able to specify an imaginary sight line direction in such a manner that the driver vocalizes "45 degrees right with respect to the travelling direction", or the like.
  • the search range determining unit 8, the POI information searching unit 9, the table DB 10 and the POI information DB 11 are provided for the information management device 3; instead, it is applicable that these are provided for the ECU 5 of the vehicle and the vehicle determines a search range to be searched for POI information and searches for POI information.
  • the POI information searching unit 9 searches the POI information DB 11 for POI information; instead, it is applicable that the POI information searching unit 9 is connected to the network and the POI information searching unit 9 searches the Internet for POI information through the network. In addition, it is applicable that, after searching for POI information, the POI information searching unit 9 searches the Internet for supplementary information to be attached to the POI information through the network.
  • the POI information searching unit 9 searches the POI information DB 11 for distribution POI information; instead, it is applicable that the POI information searching unit 9 searches the Internet for distribution POI information through the network 12.

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Automation & Control Theory (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Navigation (AREA)
  • Instructional Devices (AREA)
  • Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
  • Traffic Control Systems (AREA)

Abstract

Une direction de ligne de visée imaginaire indiquée par un conducteur d'un véhicule sur un écran tactile (41) est acquise par un système de navigation automobile (4), et des informations de véhicule sur le véhicule sont acquises par une unité d'acquisition d'informations de véhicule (42). Ces éléments d'information acquis sont transmis à partir du véhicule à un dispositif de gestion d'informations (3) situé dans un centre. Une unité de détermination de plage de recherche (8) du dispositif de gestion d'informations (3) détermine une plage de recherche à rechercher pour des informations de point d'intérêt (PI) devant être fournies au véhicule sur la base de ces éléments d'information. La plage de recherche déterminée est examinée par une unité de recherche d'informations PI (9) pour les informations PI devant être fournies au véhicule. Les informations PI trouvées sont transmises au véhicule.
PCT/IB2011/002787 2010-11-24 2011-11-23 Système de fourniture d'informations et procédé de fourniture d'informations WO2012069909A2 (fr)

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CN104851242A (zh) * 2014-02-14 2015-08-19 通用汽车环球科技运作有限责任公司 用于处理来自车辆的注意力数据的方法和系统
DE102015101358B4 (de) 2014-02-14 2023-12-07 Gm Global Technology Operations, Llc Verfahren zum Erfassen einer Fahreraufmerksamkeit gegenüber Objekten

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JP2012127944A (ja) 2012-07-05

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