JP2015076079A - Usage purpose estimation system, terminal device, usage purpose estimation method, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To estimate the use purpose of a path on which a mobile body moves.SOLUTION: A use purpose estimation system 100 includes: an acquisition part 101; a path specification part 102; a stay time specification part 103; a use purpose estimation part 104; and an output part 105. The acquisition part 101 acquires the movement history of a mobile body. The path specification part 102 specifies a path on which the mobile body has moved on the basis of the movement history acquired by the acquisition part 101. The stay time specification part 103 specifies a stay time at a point of time when the mobile body stays in a predetermined region on the basis of the movement history acquired by the acquisition part 101. The use purpose estimation part 104 estimates the use purpose of the path specified by the path specification part 102 on the basis of the stay time specified by the stay time specification part 103. The output part 105 outputs information on the path specified by the path specification part 102 and the use purpose of the path estimated by the use purpose estimation part 104.

Description

  The present invention relates to a utilization purpose estimation system, a terminal device, a utilization purpose estimation method, and a program for estimating a utilization purpose of a route traveled by a moving object.

  2. Description of the Related Art Conventionally, there is a technique in which a user's stay purpose in a stay place is estimated from the stay frequency, stay duration, and activity amount of the user in a stay place (see, for example, Patent Document 1 below).

JP 2011-253315 A

  However, the above-described conventional technique estimates the purpose of stay in the place of stay, and the problem that the purpose of use of the route traveled by the moving body cannot be estimated is an example.

  The present invention provides a use purpose estimation system, a terminal device, a use purpose estimation method, and a program capable of estimating the purpose of use of a route traveled by a moving body in order to solve the above-described problems caused by the prior art. With the goal.

  In order to solve the above-described problems and achieve the object, a utilization purpose estimation system according to the invention of claim 1 is characterized in that an acquisition means for acquiring a movement history of a moving object and the moving object is predetermined based on the movement history. Based on the route specifying means for specifying the route moved in the area, the stay time specifying means for specifying the stay time at the point where the mobile body stayed in the predetermined area, based on the travel history, and the stay time And an estimation means for estimating the purpose of use of the route, and an output means for outputting information related to the route and the purpose of use.

  According to a fifth aspect of the present invention, in the terminal device according to the present invention, the mobile body travels the route based on the travel history of the mobile body based on the travel route of the mobile body in any region and the stay time at the stayed point. A terminal device capable of communicating with a usage purpose estimation system for estimating a usage purpose at the time, and a transmission means for transmitting to the usage purpose estimation system a usage purpose request including information indicating a region to be estimated for the usage purpose; , Receiving means for receiving information on a route traveled by the mobile body in the region to be estimated and a purpose of use of the route from the use purpose estimation system; information on the received route and the purpose of use And a display control means for displaying an image representing the route and the purpose of use of the route.

  A utilization purpose estimation method according to a sixth aspect of the present invention is a utilization purpose estimation method performed by a utilization purpose estimation system that estimates a utilization purpose of a route traveled by a mobile object, and obtains a movement history of the mobile object. A step of identifying a route on which the moving body has moved in a predetermined area based on the movement history, and a staying time at a point where the moving body has stayed in the predetermined area based on the movement history A stay time specifying step for identifying the route, an estimation step for estimating the purpose of use of the route based on the stay time, and an output step for outputting information on the route and the purpose of use. To do.

  According to a seventh aspect of the present invention, there is provided a program for causing a computer to execute the utilization purpose estimating method according to the sixth aspect.

  According to the present invention, there is an effect that it is possible to estimate the purpose of use of a route traveled by a moving body.

It is a block diagram which shows an example of a functional structure of the utilization purpose estimation system concerning embodiment of this invention. It is a flowchart which shows an example of the process which the utilization purpose estimation system of this Embodiment performs. It is explanatory drawing which shows an example of the system configuration | structure of the utilization purpose estimation system of a present Example. It is a block diagram which shows the hardware constitutions of the navigation apparatus of a present Example. It is a flowchart which shows an example of the process which the server apparatus of a present Example performs. It is explanatory drawing which shows an example of a utilization purpose estimation result. It is explanatory drawing which shows an example of the display by the terminal device of a present Example.

  Exemplary embodiments of a utilization purpose estimation system, a terminal device, a utilization purpose estimation method, and a program according to the present invention will be described below in detail with reference to the drawings.

(Functional configuration of usage purpose estimation system)
First, an embodiment of the present invention will be described. FIG. 1 is a block diagram showing an example of a functional configuration of a utilization purpose estimation system according to an embodiment of the present invention. For example, the utilization purpose estimation system 100 illustrated in FIG. 1 is realized by a single or a plurality of server devices that can communicate with a terminal device included in a mobile object via a network.

  For example, examples of the moving body include a vehicle and a person. Examples of the terminal device include a navigation device mounted on a vehicle and a mobile phone (including a so-called smartphone) carried by a user. Further, examples of the network include a WAN (Wide Area Network), a LAN (Local Area Network), and a mobile phone network.

  The usage purpose estimation system 100 includes an acquisition unit 101, a route specification unit 102, a stay time specification unit 103, a usage purpose estimation unit 104, and an output unit 105. The acquisition unit 101 acquires the movement history of the moving object. For example, the above-described terminal device has a function of measuring the position of a mobile body on which the device is mounted or carried and a function of measuring time (including both date and time). The function of measuring the position of the moving object can be realized by, for example, GPS (Global Positioning System).

  The terminal device uses these functions to position the position of the moving body at a predetermined time interval (for example, every one second). Further, when the terminal device measures the position of the moving body, the positioning result is associated with the time at the time of positioning, and this is stored in the storage means (for example, a memory or a hard disk) of the own device as the moving history of the moving body. Then, the terminal device transmits the stored movement history to the usage purpose estimation system 100 at a predetermined timing (for example, every time a new movement history is stored). The acquisition unit 101 can acquire the movement history of the moving body by receiving the movement history transmitted from the terminal device.

  In addition, it is preferable that a terminal device gives the identification information (for example, manufacturing number) intrinsic | native to an own apparatus to a movement history, and transmits to the utilization purpose estimation system 100. FIG. In this way, the usage purpose estimation system 100 can identify the terminal device that has transmitted the movement history. Thereby, even if the utilization purpose estimation system 100 is provided in a state in which it can communicate with a plurality of mobile terminal devices, it is possible to manage each movement history for each terminal device (each mobile body).

  The route specifying unit 102 specifies the route along which the moving body has moved based on the movement history acquired by the acquiring unit 101. For example, as described above, the movement history represents the position (coordinates) of the moving body at each time. For this reason, the path | route specific | specification part 102 can pinpoint each path | route which the mobile body moved by calculating | requiring the spline curve and the Bezier curve which connect each position which the mobile body moved to the order which the mobile body moved.

  Further, the route specifying unit 102 may specify the route along which the moving body has moved by referring to the map data in addition to the movement history. This map data may be stored in advance in the usage purpose estimation system 100 by the manufacturer of the usage purpose estimation system 100, or stored in another device provided to be able to communicate with the usage purpose estimation system 100 via a network. May be. When the map data is stored in another device, for example, the route specifying unit 102 accesses the other device as necessary to acquire the map data.

  For example, here, it is assumed that there are two movement histories that are continuously measured in time series. The movement history measured earlier of the two movement histories represents the position on the road X in the map data, and the movement history measured later represents the position on the road Y in the map data. And In the map data, the road X and the road Y intersect at an intersection Z. In this case, the route specifying unit 102 determines a route along the road Y from the position represented by the travel history measured earlier to the intersection Z along the road X and from the intersection Z to the location represented by the travel history measured later. , To identify the route traveled by the moving body.

  Further, the route specifying unit 102 may specify a route along which the moving body has moved, and further specify a group of roads constituting the route. For example, in the case of the above-described example, the road X and the road Y are roads included in the route of the moving body. Furthermore, each road can be subdivided into sections for every predetermined distance, for example. For this reason, the route specifying unit 102 may specify a route along which the moving body has moved, and further specify a group of sections constituting this route.

  Although detailed description is omitted because of a known technique, each road in the map data is configured by a combination of so-called links and nodes. Therefore, the route specifying unit 102 may specify a route along which the mobile body has moved, and further specify a link group (and a node group) constituting the route. The smaller the unit (road, section, link) used by the route specifying unit 102 when specifying a route, the more specific the route specifying unit 102 can specify a route that approximates the route that the mobile object has actually moved.

  Further, if the movement history represents the position of the moving body for each time, the route specifying unit 102 determines the time for each time (for example, a predetermined time such as every date or every time zone) based on the time information included in the movement history. It is possible to specify the route along which the moving body has moved. Furthermore, the route specifying unit 102 can also specify the route of the moving body that has moved for each region based on the position information included in the movement history.

  By using these to narrow down the routes that should be specified by the route specifying unit 102 based on time and area, it is possible to reduce the processing load when the route specifying unit 102 specifies the route. In addition, since the use purpose estimation unit 104 described later estimates the use purpose for the route specified by the route specifying unit 102, for example, the use purpose estimation unit 104 narrows down the route specified by the route specification unit 102. It is also possible to reduce the processing load when estimating the purpose of use.

  The stay time specifying unit 103 specifies the stay time at the point where the mobile body stayed in the predetermined area based on the movement history acquired by the acquisition unit 101. This predetermined area may be an area set in advance by the manufacturer of the usage purpose estimation system 100, or may be an area designated by a user of an arbitrary terminal device that can communicate with the usage purpose estimation system 100. Good.

  For example, when the staying time specifying unit 103 specifies the staying time at the point where the mobile body stayed in the area specified by the user of an arbitrary terminal device, the usage purpose estimation system 100 includes a reception unit (not shown), The reception unit receives information indicating a designated area from an arbitrary terminal device. For example, a user of an arbitrary terminal device designates a region by prefecture, municipality, district, or the like.

  In addition, a user of an arbitrary terminal device may designate a region by designating three or more latitudes and longitudes. For example, in this case, the range included in the polygon formed with each point as a vertex is the designated area. Furthermore, a user of an arbitrary terminal device may specify a region by specifying one latitude / longitude. In this case, an area in which the radius from this one point is included within a predetermined range (for example, within 1 km) is the designated area.

  When specifying the stay time, for example, the stay time specifying unit 103 determines whether each position of the moving body included in the movement history is a position corresponding to a point included in the predetermined area. The point where the moving body has moved is extracted. When the stay time specifying unit 103 extracts the point where the moving body has moved within the predetermined area, the stay time specifying unit 103 calculates the stay time of the moving body at each extracted point.

  When calculating the stay time, the stay time specifying unit 103, for example, when positioning is continuously performed multiple times in time series at the same position, from the time when the last positioning was performed at the position, at the position. By subtracting the time at the time of first positioning, the staying time of the moving body at the point corresponding to the position is calculated. Further, for example, when the positioning is not continuously performed in time series at the same position, the stay time specifying unit 103 calculates the stay time of the moving body at each such position as 1 second (moving as described above). (History is stored at 1 second intervals).

  When the predetermined area has a range including a plurality of points, the stay time specifying unit 103 may specify a plurality of stay times. When a plurality of stay times are specified in this way, for example, the stay time specifying unit 103 uses a maximum stay time (hereinafter referred to as “longest stay time”) as a processing result from the specified plurality of stay times. To derive. This is because the longer the stay time, the more important the stay for the user of the moving body (main purpose stay).

  The purpose of use estimation unit 104 estimates the purpose of use of the route traveled by the moving body based on the stay time specified by the stay time specifying unit 103. For example, the usage purpose estimation unit 104 estimates the usage purpose of the route traveled by the moving body using a plurality of threshold values. More specifically, for example, the purpose of use estimation unit 104 estimates that the purpose of use is “pass” when the stay time is less than 5 minutes, and the purpose of use when the stay time is between 5 minutes and less than 2 hours. Is estimated to be “stop”, and if the stay time is 2 hours or more, the purpose of use is estimated to be “tourism”. In this case, two thresholds (5 minutes and 2 hours) are provided for use estimation, but the present invention is not limited to this. For example, the threshold value may be one (for example, 5 minutes), and may be estimated as “pass” when the threshold value is less than the threshold value, and “stop” when it is equal to or greater than the threshold value.

  The output unit 105 outputs information on the route specified by the route specifying unit 102 and the use purpose of the route estimated by the use purpose estimation unit 104. Here, the information regarding the route and the purpose of use of the route may be, for example, information that associates the route with the purpose of use of the route, that is, information that indicates a correspondence relationship between the route and the purpose of use of the route. it can.

  Further, the information regarding the route and the purpose of use of the route may be information representing the total result of the purpose of use for each route (or for each road constituting the route). For example, in this case, the usage purpose estimation system 100 acquires the movement histories of a plurality of moving bodies, identifies the route and staying time for each moving body, and estimates the usage purpose of the route for each moving body. Then, the utilization purpose estimation system 100 aggregates the utilization purpose estimation results for each route (or for each road constituting the route), and outputs the aggregation results.

  For example, the output unit 105 transmits information on the route and the purpose of use of the route to any terminal device capable of communicating with the purpose of use estimation system 100 via the network. Then, based on the information received from the usage purpose estimation system 100, an arbitrary terminal device displays, for example, an image representing a route and a usage purpose of the route on a display unit included in the device itself. Thereby, an arbitrary terminal device can guide the route for which the purpose of use is estimated and the purpose of use of the route.

(An example of processing performed by the usage purpose estimation system)
Next, an example of processing performed by the usage purpose estimation system 100 will be described. FIG. 2 is a flowchart illustrating an example of processing performed by the usage purpose estimation system according to the present embodiment. For example, the usage purpose estimation system 100 performs the processing shown in FIG. 2 when there is a usage purpose estimation request from any terminal device that can communicate with the usage purpose estimation system 100.

  As shown in FIG. 2, the utilization purpose estimation system 100 first acquires the movement history of the moving object (step S201). When the movement histories of a plurality of moving bodies can be acquired, the utilization purpose estimation system 100 acquires the movement histories of the plurality of moving bodies that can be acquired in step S201.

  Subsequently, the utilization purpose estimation system 100 identifies the route along which the moving body has moved from the movement history acquired in step S201 (step S202). Note that when the movement histories of a plurality of moving bodies are acquired in step S201, the usage purpose estimation system 100 identifies the route along which the moving body has moved for each moving body in step S202.

  Subsequently, the utilization purpose estimation system 100 identifies the point where the moving object stayed in the predetermined area and the staying time at the point from the movement history acquired in step S201 (step S203). In step S <b> 203, if a region is specified by the terminal device that has requested the use purpose estimation, the usage purpose estimation system 100 specifies a stay place and a stay time in the specified region. As a result, the usage purpose estimation system 100 can output information in an area desired by the user of the terminal device that has made a usage purpose estimation request. In addition, when the use purpose estimation system 100 acquires the movement histories of a plurality of moving objects, the use purpose estimation system 100 specifies a point where each moving object stayed and a staying time at the point.

  Subsequently, the utilization purpose estimation system 100 estimates the utilization purpose of the route identified in step S202 from the stay time identified in step S203 (step S204). In addition, when the use purpose estimation system 100 specifies a plurality of moving body routes, the use purpose estimation system 100 estimates the use purpose for each of the moving body routes. Then, the utilization purpose estimation system 100 outputs the path specified in step S202 and the estimation result obtained in step S204 in association with each other (step S205), and ends the series of processes.

  As described above, the utilization purpose estimation system 100 according to the present embodiment can estimate the utilization purpose of the route traveled by the mobile object, and output the route and the utilization purpose of the route in association with each other. For example, if the usage purpose estimation system 100 transmits information indicating the route and the purpose of use of this route to another terminal device provided so as to be communicable with the own device, this terminal device is a user of the own device (another terminal). It is possible to guide to the user of the apparatus) what purpose of use the route that is the target of estimation of the purpose of use is used.

  Thereby, the user of another terminal device can know the purpose of use of the route that is the target of use purpose estimation. Then, users of other terminal devices can think about their own movement plans by referring to this. In addition, for example, if the user of another terminal device is a user who is engaged in marketing, a store that opens a souvenir shop along the route on which movement for the purpose of “sightseeing” is performed, etc. It becomes possible to think about the store opening plan.

  Further, the usage purpose estimation system 100 can identify the route, stay place, and stay time that the mobile body has moved based on the movement history of the mobile body, and can estimate the usage purpose of the route that the mobile body has moved. . As a result, the use purpose estimation system 100 has moved even if the mobile terminal device does not transmit the route, stay location, stay time, and information indicating the use purpose of the route to the use purpose estimation system 100. The purpose of use of the route can be estimated.

  Therefore, the usage purpose estimation system 100 can be used without adding a function for transmitting information indicating the route, the place of stay, the staying time, and the usage purpose of the route to the usage purpose estimation system 100 to the mobile terminal device. The purpose of use of the route traveled by the moving body can be estimated without increasing the time and effort of the user of the moving body (for example, setting the purpose of the movement every time the user moves).

  Next, examples of the present invention will be described. The following example is an example when the utilization purpose estimation system 100 shown in the embodiment is applied to a server device installed in a data center or the like.

(System configuration example of utilization purpose estimation system of this embodiment)
FIG. 3 is an explanatory diagram illustrating an example of a system configuration of the use purpose estimation system according to the present embodiment. As shown in FIG. 3, a usage purpose estimation system 300 that estimates the usage purpose of a route traveled by a vehicle includes a navigation device 310, a server device 320, a personal computer, a mobile phone (a so-called smartphone) mounted on the vehicle. And the terminal device 330 realized by, for example.

  The server device 320 and the navigation device 310 are provided in a state where they can communicate with each other via the network 340, and the server device 320 and the terminal device 330 are also provided in a state where they can communicate with each other via the network 340. As described above, a WAN, a LAN, a mobile phone network, or the like can be used for the network 340.

  In FIG. 3, an example in which three navigation devices 310 and one terminal device 330 are connected to the server device 320 via the network 340 is illustrated, but the configuration is not limited thereto. One or more arbitrary number of navigation devices 310 may be connected to the server device 320, and generally a large number of navigation devices 310 are connected.

  3 shows an example in which the terminal device 330 is connected to the server device 320. However, the terminal device 330 is not an essential component in the usage purpose estimation system 300, and the processing performed by the terminal device 330, which will be described later, is performed. The navigation device 310 may perform this.

  The navigation device 310 can measure the position of a vehicle (hereinafter referred to as “own vehicle”) on which the device is mounted by GPS (see reference numeral 416 in FIG. 4) or the like. For example, when the navigation apparatus 310 is activated by being supplied with power, it measures the position of the host vehicle at a predetermined time interval (for example, every second). For example, here, the power supply of the navigation device 310 is linked to the so-called “accessory power supply” of the host vehicle. Further, the navigation device 310 may determine the position of the host vehicle at the time when the accessory power supply of the host vehicle is turned on and off.

  Each time the navigation device 310 performs positioning of the host vehicle, the navigation device 310 transmits to the server device 320 a movement history in which the positioning result, the time at the time of positioning, and identification information unique to the host device are associated. It is assumed that each of the three navigation devices 310 shown in FIG. 3 is mounted on a separate vehicle.

  When the server apparatus 320 receives the movement history from the navigation apparatus 310, the movement history database (hereinafter, “DB” is referred to as a database) provided in the storage means (for example, a magnetic disk such as a hard disk) provided in the own apparatus with the received movement history. Abbreviated to 321). As described above, since the movement history transmitted from the navigation device 310 includes the identification information of the navigation device 310, the server device 320 can manage the movement history for each identification information.

  The terminal device 330 makes a usage purpose estimation request (hereinafter simply referred to as “estimation request”) to the server device 320. For example, when the terminal device 330 makes an estimation request, the terminal device 330 transmits a usage purpose estimation condition (hereinafter simply referred to as “estimation condition”) to the server device 320. As the estimation condition, a region, a date, and the like that are estimation targets of the purpose of use are used. For example, the terminal device 330 transmits the estimation condition designated (set) by the user of the own device to the server device 320.

  For example, the user of the terminal device 330 can designate an area as an estimation condition by prefecture, municipality, or district. Further, the user of the terminal device 330 may designate an area as an estimation condition by designating three or more latitudes and longitudes. For example, in this case, a range included in a polygon formed with each point as a vertex is an area designated by the user of the terminal device 330. Furthermore, the user of the terminal device 330 may designate an area as an estimation condition by designating one point of latitude and longitude. In this case, an area where the radius from this one point is within a predetermined range (for example, within 1 km) is an area designated by the user of the terminal device 330.

  In addition, for example, the user of the terminal device 330 can specify the date and time as the estimation condition by date, time zone, day of the week, and the like. Further, the user of the terminal device 330 may specify the date and time as the estimation condition depending on whether it is a holiday or a weekday.

  When the server apparatus 320 receives the estimation request from the terminal apparatus 330, the server apparatus 320 estimates the purpose of use of the route traveled by the vehicle on which the navigation apparatus 310 is mounted using the estimation condition included in the estimation request, and the processing result is displayed on the terminal. To device 330. Therefore, the user of the terminal device 330 can obtain the estimation result of the purpose of use in the area and time desired by the user.

(Hardware configuration of navigation device)
Next, the hardware configuration of the navigation device of this embodiment will be described. FIG. 4 is a block diagram illustrating a hardware configuration of the navigation apparatus according to the present embodiment.

  As shown in FIG. 4, the navigation apparatus 310 includes a CPU 401, a ROM 402, a RAM 403, a magnetic disk drive 404, a magnetic disk 405, an optical disk drive 406, an optical disk 407, an audio I / F 408, and a speaker 409. , A microphone 410, an input device 411, a video I / F 412, a display 413, a camera 414, a communication I / F 415, a GPS unit 416, and various sensors 417. Each component 401 to 417 is connected by a bus 420.

  The CPU 401 governs overall control of the navigation device 310. Various programs such as a boot program are recorded in the ROM 402. These programs are not limited to the ROM 402, and may be recorded on a non-volatile recording medium such as the magnetic disk 405 or the optical disk 407. The RAM 403 is used as a work area for the CPU 401.

  The CPU 401 controls the entire navigation device 310 by executing various programs recorded in the ROM 402 and the like while using the RAM 403 as a work area. Note that the processing results obtained by executing the various programs are temporarily recorded in, for example, the RAM 403 and read out as necessary. Further, the above processing result may be recorded in a nonvolatile memory such as the magnetic disk 405 or the optical disk 407.

  The magnetic disk drive 404 controls reading and writing of data with respect to the magnetic disk 405 according to the control of the CPU 401. Data written under the control of the magnetic disk drive 404 is recorded on the magnetic disk 405. For example, as the magnetic disk 405, an HD (Hard Disk) or an FD (Flexible Disk) can be used.

  The optical disk drive 406 controls reading and writing of data with respect to the optical disk 407 according to the control of the CPU 401. The optical disc 407 is a detachable recording medium from which data is read according to the control of the optical disc drive 406. For example, as the optical disc 407, a CD (Compact Disc) or a DVD can be used. As the optical disc 407, a writable recording medium can be used. In addition to the optical disc 407, the removable recording medium may be an MO (Magneto Optical Disk), a memory card, or the like.

  An example of information recorded on the magnetic disk 405 or the optical disk 407 is map data. The map data includes road data indicating roads that are composed of nodes and links and on which a moving body (for example, a vehicle) can move. For example, this road data includes information indicating the attributes of the road corresponding to each link, such as the length (distance), road width, road type (highway, toll road, general road, private road) for each link. It is. The road data includes information indicating the position of each node. Further, the map data includes image data drawn using features relating to facilities and other terrain (mountains, rivers, land).

  In this embodiment, the map data is recorded on the magnetic disk 405 or the optical disk 407. However, the present invention is not limited to this. For example, when map data is stored in the server device 320, the navigation device 310 acquires map data from the server device 320 via the network 340 by the communication I / F 415, and stores the acquired map data in the RAM 403 or the magnetic disk. It may be recorded in 405 or the like and read as necessary.

  The audio I / F 408 is connected to a speaker 409 for audio output and a microphone 410 that converts the input audio into an audio signal. The sound I / F 408 outputs a predetermined sound (for example, an alarm sound) from the speaker 409 or outputs a sound signal input from the microphone 410 to the CPU 401 under the control of the CPU 401. Examples of the input device 411 include a remote controller including a plurality of keys for inputting characters, numerical values, various instructions, a keyboard, a mouse, a touch panel, and the like. The input device 411 inputs a signal corresponding to the key selected by the user into the apparatus.

  A display 413 and a camera 414 are connected to the video I / F 412. For example, the video I / F 412 includes a graphic controller that controls the entire display 413, a buffer memory such as a VRAM (Video RAM) that temporarily records image information that can be displayed immediately, and image data output from the graphic controller. The control IC is configured to control the display 413 based on the above.

  The display 413 displays icons (for example, a vehicle mark indicating the current position of the vehicle), a cursor, a menu, a window, or various data such as characters and images. For example, as the display 413, a CRT, a TFT liquid crystal display, a plasma display, an organic EL display, or the like can be used. The camera 414 images the inside of the host vehicle or the vicinity of the host vehicle, and inputs this shooting data to the video I / F 412.

  The communication I / F 415 is connected to the network 340 via wireless and functions as an interface between the navigation device 310 and the CPU 401. Further, the communication I / F 415 may receive road traffic information such as traffic congestion and traffic regulations distributed from a television broadcast, a radio broadcast, or a VICS center. Here, VICS is a registered trademark. For example, the communication I / F 415 includes an FM tuner, a VICS / beacon receiver, and the like.

  The GPS unit 416 receives a GPS signal (radio wave) from a GPS satellite and measures the current location of the vehicle. The current location measured by the GPS unit 416 is used when the current location of the vehicle is specified by the CPU 401 together with output values of various sensors 417 described later.

  Various sensors 417 output information for measuring the behavior of the vehicle. For example, the various sensors 417 include an acceleration sensor, an angular velocity sensor, a vehicle speed pulse sensor, and the like. The output values of the various sensors 417 are used by the CPU 401 for specifying the current location of the vehicle, detecting the acceleration, detecting the angular velocity, calculating the azimuth change amount, and the like.

(Example of hardware configuration of server device and terminal device)
Next, an example of a hardware configuration of the server device 320 and the terminal device 330 will be described. The server device 320 and the terminal device 330 have the same hardware configuration as the navigation device 310 shown in FIG. Note that the server device 320 and the terminal device 330 may not include the camera 414, the GPS unit 416, the various sensors 417, and the like.

  1, for example, the CPU 401 of the server device 320 reads a predetermined program or data stored in the ROM 402, RAM 403, magnetic disk 405, optical disk 407, or the like, It can be realized by executing this.

(Example of processing performed by server device)
Next, an example of processing performed by the server device 320 will be described. FIG. 5 is a flowchart illustrating an example of processing performed by the server device according to this embodiment. For example, when the server device 320 is activated by being supplied with power, the server device 320 starts the processing shown in FIG.

  As shown in FIG. 5, the server apparatus 320 first determines whether or not a movement history has been received from the navigation apparatus 310 (step S501). If the movement history is not received (step S501: No), the server apparatus 320 proceeds to the process of step S503. If the movement history has been received (step S501: Yes), the server apparatus 320 registers the received movement history in the movement history DB 321 (step S502), and proceeds to the processing of step S503.

  Subsequently, the server device 320 determines whether or not a usage purpose estimation request has been received from the terminal device 330 (step S503). If the estimation request has not been received (step S503: No), the server apparatus 320 proceeds to the process of step S501. If the estimation request has been received (step S503: Yes), the server device 320 sets the date and time and the region as the estimation condition used for estimation of the current purpose of use (step S504). As described above, since the estimation request includes information indicating the estimation condition, the server apparatus 320 sets the estimation condition according to this information. Hereinafter, the date and time set as the estimation condition is referred to as “set date and time”. This set date and time is set so as to have a certain time scale (for example, a time scale greater than or equal to the largest threshold used for route estimation. In this embodiment, it is 2 hours or more). Hereinafter, the area set as the estimation condition is referred to as “set area”.

  Subsequently, the server device 320 refers to the movement history DB 321 and identifies the navigation device 310 of the vehicle that has moved on the set date and time (step S505). As described above, the movement history DB 321 stores the position of the navigation device 310 at each time for each piece of identification information of the navigation device 310. In step S505, the server apparatus 320 refers to the movement history DB 321 and identifies identification information of the navigation apparatus 310 whose position has changed at the set date and time.

  Subsequently, the server device 320 refers to the movement history of the navigation device 310 identified in step S505 in the movement history DB 321 and identifies the navigation device 310 of the vehicle that has moved in the set area (step S506). In step S506, the server device 320 refers to the movement history of the navigation device 310 identified in step S505, and identifies the identification information of the navigation device 310 including the movement history of the position corresponding to the point in the set area. Through the processing in step S505 and step S506, the server apparatus 320 can specify the navigation apparatus 310 having a movement history that matches the estimation condition.

  Subsequently, the server device 320 specifies the route traveled in the set area at the set date and time for each navigation device 310 specified in step S506 (step S507). And the server apparatus 320 specifies the stay time in each stay place (each point to which the navigation apparatus 310 moved) in a setting area for every navigation apparatus 310 specified by step S506 (step S508). The method for specifying the route and the staying time is as described above.

  Subsequently, the server device 320 specifies the longest stay time for each navigation device 310 (step S509). Then, the server device 320 estimates the purpose of use of the route specified for each navigation device 310 according to the longest stay time for each navigation device 310 (step S510). For example, in step S510, the server device 320 estimates “pass” if the longest stay time is less than 5 minutes, and estimates “stop” if the longest stay time is 5 minutes or more and less than 2 hours. If the stay time is 2 hours or more, it is estimated as “tourism”.

  When the server device 320 estimates the purpose of use of the route for each navigation device 310, the server device 320 stores this estimation result (hereinafter referred to as “use purpose estimation result”) in the magnetic disk 405 of the server device 320 (step S511). The use purpose estimation result stored in step S511 will be described later with reference to FIG. 6. In the use purpose estimation result, the use purpose estimated for this route is set in the road group constituting the route. For example, if the route identified in step S507 is a route composed of roads ○ and roads Δ, and the purpose of use of this route is estimated as “tourism” in step S510, then in step S511, roads ○ and roads Δ Information indicating “tourism” is set for each of the two.

  Subsequently, the server 320 collects the purpose of use for each road from the result of use purpose estimation stored in step S511 (step S512), and transmits the processing result to the terminal device 330 (step S513). The processing shown in FIG.

  For example, in step S512, the server device 320 is equipped with the navigation device 310 for each road in the set area, and the number of vehicles that have moved on the road (hereinafter referred to as “total number of vehicles”) "The number of vehicles that traveled for the purpose (hereinafter referred to as" the number of vehicles passing through "), the number of vehicles that traveled on the road for the purpose of" stopping "(hereinafter referred to as" the number of vehicles for stopover "), The number of vehicles moved in step (hereinafter referred to as “the number of tourist purpose vehicles”) is calculated.

  Then, the server device 320 calculates the ratios of the number of passing target vehicles, the number of stop target vehicles, and the number of tourist target vehicles with respect to the total number of vehicles, and derives these as the processing result of step S512. As a result, the server device 320 can derive information indicating a tendency as to what purpose the road is used for each road, and transmit this information to the terminal device 330. For example, when the server apparatus 320 finishes the process shown in FIG. 5, the server apparatus 320 returns to step S501 and starts the process shown in FIG. 5 again.

  In the above example, the server device 320 estimates the purpose of use from the stay time at the place of stay (the longest stay time). However, from the viewpoint of improving the use purpose estimation accuracy, the attribute of the place of stay is also used for estimating the purpose of use. You may make it do. For example, in the map data, information indicating the attribute of the point, such as a point on a road or a point in a facility, is provided for each point. In addition, the information indicating the attribute of the point in the facility is further provided with information indicating whether the facility is a “tourist spot”, a “convenience store”, a facility classification (category), or the like.

  The server device 320 uses these pieces of information to determine whether, for example, the point where the longest stay time was obtained is a point on the road or a point in the facility, and is a point in the facility If it is determined, refer to the classification of the facility. If the facility attribute is “sightseeing spot”, the purpose of use of the route to the facility is estimated as “tourism” even if the staying time at the facility is less than 2 hours.

  If the facility attribute is “convenience store”, the purpose of use of the route to the facility is estimated to be “stop” even if the stay time in the facility is 2 hours or longer. Further, when the point where the longest stay time is obtained is a point on the road, the server device 320 estimates that the purpose of use of the route including the point is “passing” regardless of the stay time. As described above, the server device 320 can improve the estimation accuracy of the purpose of use by using the attribute of the place of stay for the purpose of use estimation. In this case, how to estimate the purpose of use for each point attribute is preset by the manufacturer of the server device 320.

  Further, from the viewpoint of improving the estimation accuracy of the purpose of use, the server device 320 may use road traffic information (information indicating traffic congestion or road regulation) distributed from the VICS center or the like for estimation of the purpose of use. For example, in this case, the server device 320 corrects the stay time at this point by subtracting a certain value from the stay time at the point on the road where the traffic jam occurs, and the point on the road where the traffic jam does not occur. This correction is not performed for the staying time at. As a result, when the stay time is prolonged due to traffic congestion (the time required for passing is prolonged), the server device 320 can correct this prolonged portion.

(Example of usage purpose estimation results)
FIG. 6 is an explanatory diagram illustrating an example of the purpose of use estimation result. As described above, when the server device 320 estimates the purpose of use of a route for each navigation device 310, the server device 320 sets the purpose of use for a group of roads constituting the route, and stores this in the magnetic disk 405 or the like of the server device 320. .

  As illustrated in FIG. 6, the server device 320 performs the processing of step S <b> 511 to identify the identification information of the navigation device 310 (“user ID” in the illustrated example) and the identification information of each road (“road ID” in the illustrated example). And the purpose of use and the date and time of movement are stored in association with each other. For example, in the case of the example in FIG. 6, the route traveled by the navigation device 310 having the identification information “123456” includes the road indicated by the road ID “45464” and the road indicated by the road ID “432464”. It was. Then, the server device 320 estimated that the purpose of use when the navigation device 310 having the identification information of “123456” moved along the route including these roads was “tourism”.

  Therefore, the server device 320 assigns the purpose of use “tourism” to the road indicated by the road ID “45464” and the road indicated by the road ID “432464” on which the navigation device 310 having the identification information “123456” has moved. It is set. For example, the movement date and time is information indicating the date and time when the navigation device 310 has moved on each road, for example, the date and time when the position is first measured at a point on the road indicated by the road ID. Can do.

  In addition, the server device 320 performs the processing in step S512 on the basis of the use purpose estimation result stored as shown in FIG. 6 for each road (for each road ID), the total number of vehicles, the number of target vehicles for passing, the number of target vehicles for stopping by, and the purpose of sightseeing. Calculate the number of vehicles. And the server apparatus 320 totals the utilization purpose for every road by calculating each ratio of the number of passing target vehicles, the number of stop target vehicles, and the number of tourist purpose vehicles with respect to the total number of vehicles. Then, the count result is transmitted to the terminal device 330. Hereinafter, this aggregation result is referred to as “use purpose aggregation result”.

(Example of estimation result output)
Next, an example of display by the terminal device 330 will be described. FIG. 7 is an explanatory diagram illustrating an example of display by the terminal device according to the present embodiment. For example, when the terminal device 330 receives the usage purpose aggregation result from the server device 320, the terminal device 330 performs the display of FIG. 7 based on the usage purpose aggregation result.

  As illustrated in FIG. 7, when the terminal device 330 receives the use purpose aggregation result, the terminal device 330 displays a map Mp of the region that is the target of use purpose estimation (that is, the “setting region” of the estimation condition) on the display 413 of the terminal device 330. To do. Here, the map Mp includes roads 710 and 720 as shown in FIG. And the terminal device 330 displays the utilization purpose totaling result line showing the totaling result of the usage purpose for every road on the road included in the map Mp. For example, in the case of FIG. 7, the terminal device 330 displays a usage purpose totaling result line 701 on the road 710 and a usage purpose totaling result line 702 on the road 720.

  The usage purpose aggregation result lines are configured by the same number of display lines as variations that can be estimated by the server device 320 as usage purposes. In the case of the present embodiment, the server device 320 can estimate the purpose of use with three patterns of “passing”, “stop”, and “tourism”. For this reason, the usage purpose aggregation result line has three display lines: a display line corresponding to the usage purpose “passing”, a display line corresponding to the usage purpose “stop”, and a display line corresponding to the usage purpose “tourism”. Consists of.

  In FIG. 7, the display line corresponding to the usage purpose “passing” is indicated by hatching with a vertical line, the display line corresponding to the usage purpose “stop” is indicated by hatching with a diagonal line, and the display line corresponding to the usage purpose “sightseeing” is Represented by black fill.

  The thickness of each display line in the use purpose totaling result line displayed on each road indicates the number of passing target vehicles, the number of stop target vehicles, and the number of tourist purpose vehicles with respect to the total number of vehicles on each road. Represents a percentage. For example, paying attention to the usage purpose totaling result line 701 displayed on the road 710, the thickness of the display line corresponding to the usage purpose “sightseeing” is the display line corresponding to the usage purpose “stop” and the usage purpose “passing”. Thicker than the thickness of This indicates that on the road 710, the number of tourist destination vehicles is larger than the number of passing destination vehicles and the number of stop destination vehicles.

  Further, for example, when attention is paid to the usage purpose totaling result line 702 displayed on the road 720, the thickness of the display line corresponding to the usage purpose “pass” corresponds to the usage purpose “stop” and the usage purpose “tourism”. Thicker than the thickness of the display line. This indicates that the number of destination vehicles on the road 720 is larger than the number of tourist destination vehicles and the number of stop destination vehicles. Note that, for example, the terminal device 330 does not display a use purpose totaling result line on a road where the total number of vehicles is “0”.

  As shown in FIG. 7, the terminal device 330 displays a usage purpose totaling result line corresponding to each road on each road included in the map Mp, thereby indicating the usage purpose tendency of each road. Intuitive and easy-to-understand guidance.

  Moreover, the terminal device 330 may determine the thickness of the utilization purpose totaling result line displayed on the said road according to the total number of vehicles of the said road for every road. In this case, the terminal device 330 further displays the use purpose totaling result line of the determined thickness according to the ratios of the number of passing target vehicles, the number of stop target vehicles, and the number of tourist purpose vehicles with respect to the total number of vehicles. Thus, the display line corresponding to “passing”, the display line corresponding to the usage purpose “stop”, and the display line corresponding to the usage purpose “tourism” are divided. In this way, the terminal device 330 can guide the number of vehicles on each road to the user of the device itself.

(Modification 1 of the present embodiment)
Next, a first modification of the present embodiment will be described. The navigation device 310 has a function of searching for a route to a destination set by the user and guiding the route. When the server device 320 transmits the use purpose estimation result and the use purpose aggregation result to the navigation device 310, the navigation device 310 can perform route guidance using these.

  For example, a road that is more frequently used for “sightseeing” than used for other purposes may have some reason such as “good view” or “facing many tourist spots”. Therefore, when the navigation device 310 determines that the purpose of the current user's movement is “sightseeing” because the destination attribute set by the user is “sightseeing spot”, for example, the navigation device 310 determines the position of the destination. Information to be transmitted is transmitted to the server device 320. Then, the server device 320 estimates the use purpose of the route around the destination based on the received information indicating the position of the destination, and uses the use purpose estimation result and the use purpose total result obtained thereby to the navigation device 310. Send. The navigation device 310 performs a route search that prioritizes roads that are more frequently used for “tourism” than used for other purposes, based on the use purpose estimation results and use purpose tabulation results received from the server device 320. Further, the navigation device 310 transmits information indicating the position of the destination and the current position of the host vehicle to the server device 320 so that the server device 320 includes both the position of the destination and the current position of the host vehicle. The purpose of use of the local route may be estimated.

  On the other hand, when the navigation device 310 determines that the purpose of the current user's movement is “home” because the destination attribute set by the user is “home”, the current position of the host vehicle is determined. Information to be transmitted is transmitted to the server device 320. Then, the server device 320 estimates the purpose of use of the route around the current position of the host vehicle based on the received information indicating the current position of the host vehicle, and obtains the purpose of use estimation result and the use purpose tabulation obtained thereby. The result is transmitted to the navigation device 310. The navigation device 310 performs a route search that prioritizes roads that are used for the purpose of “passing” more frequently than used for other purposes based on the usage purpose estimation results and usage purpose tabulation results received from the server device 320. Further, the navigation device 310 transmits information representing the position of the home and the current position of the host vehicle to the server device 320, so that the server device 320 can detect the region including both the home position and the current position of the host vehicle. The purpose of use of the route may be estimated.

  Further, for example, when the user's travel time exceeds 2 hours continuously, the navigation device 310 re-searches a route including a road that is used more for the purpose of “stopping” than used for other purposes ( So-called “reroute”) and may encourage the user to drop in (ie take a break).

(Modification 2 of the present embodiment)
Next, a second modification of the present embodiment will be described. For example, in the navigation device 310, the location registration of the home is performed by the user. The navigation device 310 transmits the home location registered by the user to the server device 320, and the server device 320 stores the home location for each navigation device 310.

  When estimating the purpose of use of the route, the server device 320 determines for each navigation device 310 whether or not there is a home in the area where the purpose of use is estimated. Then, the server device 320 estimates the purpose of use as “home user” for the route traveled by the navigation device 310 determined to have a home in the area to be used for estimation of the purpose of use. The estimation result is different from “stop” and “tourism”. As a result, the server device 320 can estimate the purpose of use of the route using not only the staying time but also the position of the user's home.

(Modification 3 of the present embodiment)
Next, a third modification of the present embodiment will be described. In the above-described embodiment, the navigation apparatus 310 has been described as an in-vehicle terminal, but the navigation apparatus 310 may be a user portable terminal such as a mobile phone. In this case, for example, even if the user stays at a certain facility, the user rarely stops strictly, and basically continues to move.

  Therefore, in this case, even if the user's position changes, the server device 320 stays at the facility if the user stays within the range of a certain facility (for example, within a radius of 50 m from a certain point). It is determined that Then, the server device 320 calculates the staying time at this facility by subtracting the time when entering (first) within this range from the time when moving outside (first) outside this range, The use purpose of the route traveled by the user is estimated using this staying time.

  Further, when the navigation device 310 is a user portable terminal, the user may move using a route other than the road for which the road ID is set in the map data. For example, when the user gets on a train, the user moves using a route other than the road for which the road ID is set in the map data. Therefore, when the user moves using a route other than the road for which the road ID is set in the map data, the server device 320 includes the position information of the start point and end point of the route and shape information indicating the shape of the route. Are stored as a route traveled by the user.

  In the above embodiment, the server device 320 receives the movement history from the navigation device 310 and estimates the purpose of use of the route based on the movement history. However, the present invention is not limited to this. For example, the navigation device 310 may estimate the purpose of use of the route based on the movement history by executing each process of the server device 320 described above.

  For example, in this case, the navigation device 310 estimates the purpose of use of the route traveled by the host vehicle from the movement history acquired by the device itself and the area to be estimated for the purpose of use specified by the user of the device itself. Thereby, the navigation apparatus 310 can guide the user of the own apparatus about the estimation result of the purpose of use of the route traveled by the own vehicle. When the navigation device 310 is installed in a rental car or the like, the user knows the route used by the past user of the rental car and the purpose of use of the route, and makes his own movement plan with reference to this. Will be able to.

  Further, the navigation device 310 is provided so as to be communicable with another navigation device 310 via the network 340. The navigation device 310 estimates the purpose of use of the route traveled by the host vehicle, and uses the estimation result as another navigation device 310. To the user of the other navigation device 310 to guide the purpose of use of the route traveled by the host vehicle. In addition, any one of the plurality of navigation devices 310 may perform the same function as the server device 320 by executing each process of the server device 320.

  As described above, according to the utilization purpose estimation system, the terminal device, the utilization purpose estimation method, and the program according to the present invention, it is possible to estimate the utilization purpose of the route traveled by the moving object.

  The utilization purpose estimation method described in the present embodiment can be realized by executing a program prepared in advance on a computer such as a personal computer, a workstation, or a smartphone. This program is recorded on a computer-readable recording medium such as a hard disk, a memory card, a CD-ROM, and a DVD, and is executed by being read from the recording medium by the computer. Further, this program may be distributed via a network such as the Internet.

DESCRIPTION OF SYMBOLS 100 Usage purpose estimation system 101 Acquisition part 102 Path | route specific | specification part 103 Stay time specific | specification part 104 Usage purpose estimation part 105 Output part

Claims (7)

An acquisition means for acquiring a movement history of the moving object;
Route specifying means for specifying a route on which the moving body has moved in a predetermined area based on the movement history;
Based on the movement history, a stay time specifying means for specifying a stay time at a point where the mobile body stayed in the predetermined area;
Estimating means for estimating the purpose of use of the route based on the stay time;
Output means for outputting information on the route and the purpose of use;
A purpose-of-use estimation system comprising: The movement history is information representing the position of the moving body for each time,
The route specifying means specifies a route along which the moving body has moved at a predetermined time,
The utilization purpose estimation system according to claim 1, wherein the stay time specifying means specifies a stay time at a point where the mobile body stayed at the predetermined time. The stay time specifying means specifies the longest stay time from the stay time at each point where the mobile body stayed,
The utilization purpose estimation system according to claim 1 or 2, wherein the estimation means estimates a utilization purpose based on the longest stay time. A reception unit that receives information indicating an area to be used for estimation from an arbitrary terminal device;
The route specifying means specifies the route that the mobile body has moved in the area to be estimated,
The stay time specifying means specifies a stay time at a point where the mobile body stayed in the area to be estimated,
The utilization purpose estimation system according to any one of claims 1 to 3, wherein the output unit outputs information on the route and the utilization purpose to the terminal device. Utilization purpose estimation system and communication for estimating the purpose of use when the mobile body travels the route based on the travel history of the mobile body based on the travel route of the mobile body in any region and the stay time at the point where the mobile body stayed A possible terminal device,
Transmitting means for transmitting a use purpose request including information indicating a region to be used for estimation to the use purpose estimation system;
Receiving means for receiving, from the use purpose estimation system, information relating to a route traveled by the mobile body in the area to be estimated and a use purpose of the route;
A terminal device comprising: display control means for displaying an image representing the route and the purpose of use of the route based on the received information on the route and the purpose of use. A purpose-of-use estimation method performed by a purpose-of-use estimation system that estimates the purpose of use of a route traveled by a moving object,
An acquisition step of acquiring a movement history of the moving object;
Based on the movement history, a route specifying step for specifying a route that the moving body has moved in a predetermined area;
Based on the movement history, a stay time specifying step for specifying a stay time at a point where the moving body stays in the predetermined area; and
An estimation step of estimating a purpose of use of the route based on the stay time;
An output step of outputting information on the route and the purpose of use;
The purpose of use estimation method characterized by including.   A program for causing a computer to execute the utilization purpose estimation method according to claim 6.

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