JP7213107B2 - Vehicle position analysis device and vehicle position analysis method - Google Patents

Description

TECHNICAL FIELD The present invention relates to a vehicle position analysis device and a vehicle position analysis method for analyzing a parking position.

Applications are expanding in which GPS position information from a plurality of vehicles is received by a server, and the accumulated position information is utilized for determining visits to facilities and data analysis such as trade area analysis. For data analysis, it is necessary to determine whether or not the vehicle has parked at the facility. Normally, parking is possible based on whether the vehicle's location information has remained within a predetermined radius from the latitude and longitude of the center point of the facility for a predetermined period of time. is judged. Also, a technology has been developed in which a facility is defined by a polygon and a determination is made within an area connecting the vertices of the polygon (see Patent Document 1, for example).

Patent No. 3539629

Positional information obtained from a vehicle has errors due to, for example, terminal design and usage conditions. However, if the predetermined radius from the center is increased, the possibility of erroneously determining that the vehicle is parked at another nearby facility also increases.
In general, facilities targeted for data analysis are often commercial facilities. Such commercial facilities, for example, are often densely packed, such as shopping streets.

SUMMARY OF THE INVENTION The present invention has been made in view of such problems. It aims to provide a location analysis method.

(1) A vehicle position analysis device (for example, a vehicle position analysis device 30 to be described later) of the present invention is a map storing facility information (facility information 321 to be described later) having position information including the shapes of the facilities for a plurality of facilities. An information storage unit (storage unit 32 described later), a receiving unit (receiving unit 311 described later) for receiving continuous position information from a plurality of vehicles together with time information, and when there is no change in the position information for a predetermined time or longer, A parking determination unit (to be described later) that determines that the vehicle is parked and stores position information at which it is determined that the vehicle is parked as a parking position of the vehicle in a parking position storage unit (a parking position information table 323 to be described later). a parking determination unit 312), and when the parking position of the vehicle is located within the shape of one facility stored in the map information storage unit, it is estimated that the vehicle has stayed at the facility, and the parking position of the vehicle is determined. is not located within the shape of one facility stored in the map information storage unit, it is calculated whether a shape formed by a circle with a predetermined radius centered on the parking position includes the shape of the facility. and a stay determination unit (a stay determination unit 313 to be described later) that determines that the vehicle has stayed at the facility when the shape of is included.

According to the above (1), even if there is a vehicle positioning error, it is possible to more accurately estimate the facility where the vehicle is parked.

(2) In the vehicle position analysis device described in (1) above, the stay determination unit further includes: the parking position of the vehicle is not located within the shape of one facility stored in the map information storage unit; When the shape formed by a circle with a predetermined radius centered on the parking position of the vehicle includes the shape of a plurality of facilities, the largest area of the plurality of facilities is a circle with a predetermined radius centered on the parking position of the vehicle. You may make it determine that it stayed at the facility which exists in the shape which consists of.

According to (2) above, when facilities are adjacent to each other, it is possible to estimate which facility the user has stayed at.

(3) In the vehicle position analysis device described in (1) above, the map information storage unit further stores type information regarding the type of facility, and the parking determination unit further calculates the parking time of the vehicle. , the stay determining unit determines that the parking position of the vehicle is not located within the shape of one facility stored in the map information storage unit, and that the shape of a circle having a predetermined radius centered on the parking position of the vehicle is When the shape of a plurality of facilities is included, the facility where the vehicle stayed is determined from among the plurality of facilities by referring to a facility parking time table that associates a guideline of parking time for each type of facility in advance. can be

According to the above (3), by comparing the parking time of the vehicle with the estimated parking time based on the facility type of the plurality of facilities, it is possible to determine which of the plurality of facilities the vehicle will stay at. It is possible to estimate whether there is a high possibility that the For example, if one of the multiple facilities is a convenience store and the other is a hospital, and the vehicle stops for one hour, it is possible to estimate that the vehicle is likely to have stayed at the hospital. Become.

(4) The vehicle position analysis device described in (1) to (3) above stores facility stay history information including information on a facility determined to have stayed in the past by the plurality of vehicles and date and time of stay for each of the vehicles. The stay determining unit further selects the facility where the vehicle stayed from among the plurality of facilities based on the facility stay history information of the vehicle stored in the history storage table. You may make it judge.

According to (4) above, for example, even if the vehicle is not positioned within the shape of the facility this time, if there is a history that the vehicle has stayed at the same convenience store, hospital, etc. at a fixed date and / or stay time in the past. Based on this, it is possible to more accurately estimate which facility the vehicle has stayed at.

(5) A vehicle position analysis method of the present invention is a vehicle position analysis method executed by a computer provided with a map information storage unit that stores facility information including position information including the shapes of the facilities with respect to a plurality of facilities, A receiving step of receiving continuous position information from a plurality of vehicles together with time information, determining that the vehicle is parked when the position information does not change for a predetermined time or longer, and the position at which the vehicle is determined to be parked. a parking determination step of storing information as the parking position of the vehicle in a parking position storage unit (parking position information table 323 described later); If the parking position of the vehicle is not located within the shape of one facility stored in the map information storage unit, the parking position is assumed to be the center. a stay determination step of calculating whether a shape formed by a circle of a predetermined radius includes the shape of the facility, and determining that the vehicle has stayed at the facility if the shape includes the shape of the facility.

According to the method (5), the same effect as the vehicle position analysis device (1) is obtained.

According to the present invention, it is possible to provide a vehicle position analysis device and a vehicle position analysis method that enable more accurate estimation of a facility where a vehicle is parked even when there is a vehicle positioning error. Become.

1 is a block diagram showing the basic configuration of the entire vehicle position analysis system that is an embodiment of the present invention; FIG. 1 is a functional block diagram showing the functional configuration of an in-vehicle navigation device according to an embodiment of the present invention; FIG. 1 is a functional block diagram showing the functional configuration of a mobile terminal according to an embodiment of the present invention; FIG. 1 is a functional block diagram showing the functional configuration of a vehicle position analysis device according to an embodiment of the present invention; FIG. It is a table showing an example of a location information database in the embodiment of the present invention. It is a figure showing an example of the relationship between the parking position of a vehicle, and the shape of the facility located near a parking position in embodiment of this invention. It is a figure showing an example of the relationship between the parking position of a vehicle, and the shape of the facility located near a parking position in embodiment of this invention. It is a figure showing an example of the relationship between the parking position of a vehicle, and the shape of the facility located near a parking position in embodiment of this invention. It is a figure showing an example of the relationship between the parking position of a vehicle, and the shape of the facility located near a parking position in embodiment of this invention. 4 is a flow chart showing basic operations of the vehicle position analysis device according to the embodiment of the present invention; 4 is a flow chart showing basic operations of the vehicle position analysis device according to the embodiment of the present invention; 4 is a flow chart showing basic operations of the vehicle position analysis device according to the embodiment of the present invention; 4 is a flow chart showing basic operations of the vehicle position analysis device according to the embodiment of the present invention;

A preferred embodiment of the vehicle position analysis system of the present invention will be described in detail below with reference to the drawings.

<Overall Configuration of Vehicle Position Analysis System 1>
A vehicle position analysis system 1 according to a preferred embodiment of the present invention will be described. FIG. 1 shows the overall configuration of a vehicle position analysis system 1. As shown in FIG.

As shown in FIG. 1 , the vehicle position analysis system 1 includes an in-vehicle navigation device 10 , a mobile terminal 20 and a vehicle position analysis device 30 . These devices and terminals are connected via a communication network 60 so as to be able to communicate with each other. In addition, although the information transmitted and received by each device and each terminal is also illustrated in the figure, this information is only an example. In this embodiment, information other than those shown may be transmitted and received.

The in-vehicle navigation device 10 is a device that provides navigation (route guidance) to a user in a vehicle 50a. The in-vehicle navigation device 10 also has a function of positioning the position information of the in-vehicle navigation device 10 (that is, the position information of the vehicle 50a). The in-vehicle navigation device 10 provides route guidance from the current position to the destination based on the request of the user who got into the vehicle 50 and the position information obtained by positioning.

In addition, the vehicle-mounted navigation device 10 appropriately transmits the positional information obtained by positioning to the vehicle position analysis device 30 together with a mobile object ID, which is identification information for identifying the vehicle-mounted navigation device 10 . Here, since the in-vehicle navigation device 10 and the vehicle 50a are used as a one-to-one pair, the transmitted position information can be substantially regarded as the position information of the vehicle 50a.
Such an in-vehicle navigation device 10 can be realized by a portable car navigation device installed in the vehicle 50a, which is a mobile object, or a PND (Portable Navigation Device) easily installed in the vehicle 50a, which is a mobile object. can be done.

The mobile terminal 20 is a mobile terminal used by a user who has boarded the vehicle 50b. The mobile terminal 20 has a function of performing navigation (route guidance) and a function of measuring the position information of the mobile terminal 20 (that is, the position information of the vehicle 50b), similarly to the in-vehicle navigation device 10 described above.

Then, the mobile terminal 20 sends the positional information obtained by the positioning to the vehicle position analysis device 30 together with the mobile ID, which is the identification information for identifying the mobile terminal 20, in the same way as the in-vehicle navigation device 10 described above. Send as appropriate. Here, since the mobile terminal 20 and the vehicle 50b are used as a one-to-one pair, the transmitted position information can be substantially regarded as the position information of the vehicle 50b.
Such a mobile terminal 20 can be realized by a smart phone, a mobile phone, a tablet terminal, a notebook computer, or other portable electronic devices.

In the figure, one set of the in-vehicle navigation device 10 and the vehicle 50a and one set of the portable terminal 20 and the vehicle 50b are illustrated, but there is no particular limit to the number of these sets, and the present embodiment can be used. may contain any number of these tuples. Similarly, the number of vehicle position analysis devices 30 is not particularly limited, and any number of vehicle position analysis devices 30 may be included in this embodiment.

Further, in the following description, when the vehicle 50a equipped with the in-vehicle navigation device 10 and the vehicle 50b in which the user using the mobile terminal 20 rides are referred to without distinguishing between them, the alphabet at the end is omitted and simply It is called "vehicle 50".
Furthermore, the vehicle 50 and the in-vehicle navigation device 10 and the mobile terminal 20 used in the vehicle 50 move as the vehicle 50 moves. Therefore, in the following description, the vehicle 50, the in-vehicle navigation device 10, and the portable terminal 20 are also referred to as "moving bodies" as appropriate.

The vehicle position analysis device 30 is a device that can more accurately analyze the facility where each vehicle 50 is parked based on continuous position information received from a plurality of vehicles 50 . By doing so, the vehicle position analysis device 30 can be utilized, for example, based on the parking position information of the vehicle 50, for determination of visits to facilities, data analysis such as trade area analysis, and the like.

The vehicle 50 is a moving object in which the user of the in-vehicle navigation device 10 or the mobile terminal 20 rides. Vehicle 50 is implemented by, for example, a four-wheeled vehicle, a motorcycle, a bicycle, or the like.

The communication network 60 is implemented by a network such as the Internet or a mobile phone network, or a network combining these. A part of the network (for example, between the vehicle position analysis device 30 and the facility terminal 40) may include a LAN (Local Area Network).
Before describing the vehicle position analysis device 30, the in-vehicle navigation device 10 and the portable terminal 20 will be briefly described.

<Regarding the in-vehicle navigation device 10>
The in-vehicle navigation device 10 receives power supply from the vehicle 50a, and is automatically started when the ignition switch of the vehicle 50a is turned on (the engine is started) by the user in the vehicle 50a. The in-vehicle navigation device 10 operates until the ignition switch of the vehicle 50a is turned off (the engine is stopped) by the user in the vehicle 50a.

As shown in FIG. 2 , the vehicle-mounted navigation device 10 includes a control section 11 , a storage section 12 , a communication section 13 , a sensor section 14 , a display section 15 and an input section 16 .

The control unit 11 is composed of an arithmetic processing unit such as a microprocessor, and controls each unit constituting the in-vehicle navigation device 10 . Details of the control unit 11 will be described later.

The storage unit 12 is composed of a semiconductor memory or the like, and is used for transmitting control programs called firmware or operating system, programs for performing route guidance processing, and processing for transmitting position information to the vehicle position analysis device 30 . , and various other information such as facility information for route guidance and map information including facility IDs.

In the figure, as information stored in the storage unit 12, location information 121 and mobile unit ID 122, which are information particularly related to the transmission process of location information, are illustrated.
The position information 121 is the position information of the in-vehicle navigation device 10 (that is, the position information of the vehicle 50a) measured by the sensor unit 14, which will be described later. The position information 121 can include not only information indicating the determined position, but also the time when the positioning was performed.

The mobile body ID 122 is information for identifying the vehicle navigation device 10 or the vehicle 50a in which the vehicle navigation device 10 is installed.
As the mobile body ID 122, for example, a serial number or the like uniquely assigned to the in-vehicle navigation device 10 can be used. In addition, in order for the communication unit 13 to connect to the communication network 60, which is a network such as a mobile phone network, the telephone number given to the SIM (Subscriber Identity Module) inserted in the communication unit 13 is used as the mobile ID 122. can be used as In addition, a VIN (vehicle identification number) uniquely assigned to the vehicle 50a or a license plate number can be used as the mobile body ID 122. FIG.

The communication unit 13 has a DSP (Digital Signal Processor) and the like, and conforms to standards such as LTE (Long Term Evolution) established by 3GPP (Third Generation Partnership Project) and standards such as Wi-Fi (registered trademark). wireless communication with another device (for example, the vehicle position analysis device 30) via the communication network 60. The communication unit 13 is used, for example, by the position information transmission unit 112 described later to transmit the position information 121 and the mobile object ID 122 stored in the storage unit 12 to the vehicle position analysis device 30 . However, there is no particular limitation on the data transmitted/received between the communication unit 13 and other devices, and information other than the location information 121 and mobile body ID 122 may be transmitted/received.

The sensor unit 14 is configured by, for example, a GPS (Global Positioning System) sensor, a gyro sensor, an acceleration sensor, or the like. The sensor unit 14 has a function as position detection means for detecting position information, receives GPS satellite signals from the GPS sensor, and measures the position information (latitude and longitude) of the vehicle-mounted navigation device 10 . Positioning by the sensor unit 14 is performed at predetermined time intervals (for example, 3-second intervals) as described above. Position information obtained by positioning is stored in the storage unit 12 as the position information 121 .
Note that the sensor unit 14 can further improve the positioning accuracy of the position information of the in-vehicle navigation device 10 based on the angular velocity and acceleration measured by the gyro sensor and the acceleration sensor.
The display unit 15 is configured by a display device such as a liquid crystal display or an organic electroluminescence panel. The display unit 15 receives an instruction from the control unit 11 and displays an image.
The input unit 16 includes a physical switch called a numeric keypad, an input device (not shown) such as a touch panel provided over the display surface of the display unit 15, and the like.
In addition, although not shown, a speaker, a microphone, and the like may be provided. The speaker outputs voice to the driver, and the microphone collects voices and the like emitted by the driver.
By doing so, information can be output by voice from a speaker, and various selections and instructions by the driver input by voice via a microphone can be input to the control unit 11 by voice recognition technology.

Next, details of the control unit 11 will be described. The control unit 11 is composed of a microprocessor having a CPU (Central Processing Unit), RAM (Random Access Memory), ROM (Read Only Memory), I/O (Input/Output), and the like. The CPU executes each program read from the ROM or the storage unit 12, reads information from the RAM, the ROM, and the storage unit 12 during the execution, writes information to the RAM and the storage unit 12, It exchanges signals with the communication unit 13 , the sensor unit 14 , the display unit 15 and the input unit 16 . In this way, the processing in this embodiment is realized by cooperation between hardware and software (programs).

The control unit 11 includes a route guidance unit 111 and a location information transmission unit 112 as functional blocks.

The route guidance unit 111 performs route guidance processing to a destination such as a facility input or selected by the user, and is well known to those skilled in the art.

The position information transmission unit 112 is a part that transmits the position information 121 and the mobile body ID 122 stored in the storage unit 12 to the vehicle position analysis device 30 by wireless communication using the communication unit 13 .

The transmission of the position information 121 and the moving body ID 122 to the vehicle position analysis device 30 by the position information transmission unit 112 is performed when the ignition switch of the vehicle 50a is turned on (the engine is started) by the user who got into the vehicle 50a at the start of driving. This is periodically performed from when the in-vehicle navigation device 10 is automatically activated until the ignition switch of the vehicle 50a is turned off (the engine is stopped) at the end of driving. For example, real-time transmission is performed each time the sensor unit 14 performs positioning at predetermined time intervals (for example, three-second intervals). In other words, the transmission is performed in real time from the time the driving is started until the driving is finished.
In addition, instead of transmitting to the vehicle position analysis device 30 in real time, a plurality of pieces of information (for example, the position information 121 updated at 3-second intervals for 3 minutes and the moving body ID 122 are put together) are collected at once. You may make it transmit. That is, so-called burst transmission may be performed. The length of the predetermined time interval and whether to perform real-time transmission or burst transmission can be arbitrarily set according to the environment or the like to which the present embodiment is applied.
In this way, by performing real-time transmission or burst transmission, the position information transmission unit 112 transmits the position information 121 for specifying the moving route of the vehicle 50a positioned by the sensor unit 14 and the moving object ID 122 to the vehicle. It is transmitted to the position analysis device 30 .

In this case, the ignition switch is turned on (the engine is started), and the position specified by the position information 121 measured immediately after the in-vehicle navigation device 10 is automatically started is the first vehicle position in driving, that is, the starting position of the vehicle. It can be sent to the position analysis device 30 . Furthermore, the position specified by the position information 121 measured immediately before the ignition switch is turned off (engine stopped) can be transmitted to the vehicle position analysis device 30 as the final vehicle position during driving, that is, the parking position. For example, information indicating that the position information 121 represents the departure position and that the position information 121 represents the parking position (for example, the value of the flag indicating these is set to 1) is added to the position information 121. , to the vehicle position analysis device 30 .
It should be noted that the position information 121 (i.e., the parking position) measured immediately before the ignition switch is turned off (engine stopped) is determined when the ignition switch is turned on (engine started) and the in-vehicle navigation device 10 is restarted. may be sent to

When burst transmission is performed, for example, when the route guidance unit 111 determines that the vehicle 50a has arrived at a destination such as a facility, the location information transmission unit 112 switches to real-time transmission. can be done. In this way, after arriving at the destination such as the facility, the ignition switch is turned off (the engine is stopped) before the position information 121 of the destination such as the facility is transmitted. A situation in which the information 121 is not transmitted to the vehicle position analysis device 30 can be prevented.

In addition, the position information transmission unit 112 can transmit the speed information of the vehicle 50a to the vehicle position analysis device 30 together with the position information 121 and the moving body ID 122 described above.

<Regarding the mobile terminal 20>
As shown in FIG. 3, the mobile terminal 20 includes a control unit 21, a storage unit 22, a communication unit 23, a sensor unit 24, a display unit 25, an input unit 26, and a short-range communication unit 27. consists of
Here, the control unit 21, the storage unit 22, the communication unit 23, the sensor unit 24, the display unit 25, and the input unit 26 have functions equivalent to those of the same-named functional blocks included in the vehicle-mounted navigation device 10 described above. have. That is, in the description of the vehicle-mounted navigation device 10 described above, by replacing the wording of "vehicle-mounted navigation device 10" with "portable terminal 20" and the wording of "vehicle 50a" with "vehicle 50b", each Since this is a description of functional blocks, redundant description will be omitted.

On the other hand, the portable terminal 20 differs from the in-vehicle navigation device 10 in that it includes a short-range communication unit 27, etc., and this difference will be described below.
The short-range communication unit 27 performs non-contact short-range communication conforming to standards such as NFC (Near Field Communication) and Bluetooth (registered trademark), or wired short-range communication via a USB (Universal Serial Bus) cable or the like. This is the part for

On the other hand, vehicle 50 b includes a short-range communication unit for communicating with short-range communication unit 27 . For example, an ECU (Electronic Control Unit) of the vehicle 50b includes a short-range communication unit.
A case where the mobile terminal 20 can communicate with the ECU by short-range communication is a case where the mobile terminal 20 is present inside the vehicle 50b. In this case, the positional information measured by the sensor unit 24 of the mobile terminal 20 corresponds to the positional information of the vehicle 50b.

Therefore, the mobile terminal 20 activates the location information transmission section 212 while short-range communication with the ECU is possible via the short-range communication section 27 . Then, in the same way as the position information transmission unit 112 of the in-vehicle navigation device 10, the activated position information transmission unit 212 acquires position information 221 for specifying the moving route of the vehicle 50b measured by the sensor unit 24, and a moving body ID 222. are transmitted to the vehicle position analysis device 30 .

For example, when the user carries the mobile terminal 20 and gets into the vehicle 50b and turns on a start switch of the vehicle 50b such as an ignition switch, the vehicle 50b and the mobile terminal 20 are connected (paired), and then the mobile terminal 20 is connected (paired). Position information 221 positioned by 20 and mobile object ID 222 are transmitted from the mobile terminal 20 to the vehicle position analysis device 30 .
Furthermore, when a start switch of the vehicle 50b such as an ignition switch is turned off, the pairing between the vehicle 50b and the mobile terminal 20 is cancelled.

When the vehicle 50b has a function of measuring position information, the position information measured by the vehicle 50b is transmitted to the vehicle position analysis device 30 as the position information 121 instead of the position information measured by the sensor unit 24. You may make it In this case, the sensor unit 24 may be omitted from the mobile terminal 20 .

<Regarding the vehicle position analysis device 30>
Next, functional blocks included in the vehicle position analysis device 30 will be described with reference to the block diagram of FIG.

As shown in FIG. 4 , the vehicle position analysis device 30 includes a control section 31 , a storage section 32 and a communication section 33 .

The control unit 31 is composed of an arithmetic processing unit such as a microprocessor, and controls each unit that constitutes the vehicle position analysis device 30 . Details of the control unit 31 will be described later.

The storage unit 32 is composed of a semiconductor memory or the like, and stores programs such as a control program called firmware or an operating system, a program for performing vehicle position analysis processing, and various other information such as map information. remembered. In the figure, facility information 321, a position information database 322, and a parking position information table 323, which are information related to vehicle position analysis processing, are shown as information stored in the storage unit 32. FIG.

The facility information 321 includes facility identification information (facility ID), facility name, facility type (and/or genre) related to the type of facility, telephone number, address, business hours, location of the facility (for example, latitude and longitude information). location information, parking lot information, information on the shape of the facility, etc. In addition, if the facility is a restaurant, additional information such as menus to be provided, facility information related to products and services, and the like may be included.
Here, the facility type indicates the type of business of the facility, such as a convenience store, a hospital, or a car dealership. As the parking lot information, location information of parking lots associated with the facility, etc. are stored. In addition, when one facility has a plurality of parking lots, the position information of each parking lot is saved. The information on the shape of the facility indicates the shape of the facility as a whole, including the building, site, and parking lot attached to the facility.
In addition to the facility information 321, the storage unit 32 stores road information, road information, display map data for displaying roads and backgrounds such as road maps, nodes (for example, road intersections, bends, end points, etc.). ) location information and type information, location information and type information of links that are routes connecting each node, link cost data related to cost information of all links (e.g. distance, required time, etc.) Road network data etc. may be included.

The facility information 321 may be stored in the storage unit 32 in advance, or may be downloaded from a server device (not shown) connected to the communication network 60 as necessary. . Furthermore, the facility information 321 may be modified as appropriate according to user input or the like.

The location information database 322 is a database constructed based on the location information 121 and mobile ID 122 received from the in-vehicle navigation device 10 and the location information 221 and mobile ID 222 received from the portable terminal 20 .
The location information database 322 is constructed and updated by each functional block included in the control section 31 . Details of the location information database 322 will be described later.

As will be described later, the parking position information table 323 is a table that stores position information determined by the parking determination unit 312 that the vehicle 50 is parked by associating the parking position of the vehicle with the identification information of the vehicle 50 . . At this time, the parking position information table 323 may store the parking time including date and time information at the parking position in addition to the parking position.
Further, as will be described later, the information (for example, facility ID) related to the facility estimated to have stayed from the parking position of the vehicle 50 by the stay determination unit 313 may be saved together with the parking position information table 323. good.

In the following description, when the position information 121 and the position information 221 are not distinguished from each other, they are referred to as "position information" by omitting the reference numerals. Similarly, when the mobile ID 122 and the mobile ID 222 are described without distinction, they are referred to as "mobile ID" with their reference numerals omitted.

The communication unit 33 has a DSP or the like, and conforms to standards such as LTE established by 3GPP and standards such as Wi-Fi (registered trademark), and communicates with other devices (for example, in-vehicle navigation 10, mobile terminal 20, etc.). The communication unit 33 is used, for example, to receive position information, user information, and mobile IDs transmitted from the in-vehicle navigation device 10 and the mobile terminal 20, respectively.
However, there is no particular limitation on the data transmitted/received between the communication unit 33 and other devices, and information other than these information may be transmitted/received.

Next, details of the control unit 31 will be described. The control unit 31 is composed of a microprocessor having a CPU, RAM, ROM, and I/O. The CPU executes each program read from the ROM or the storage unit 32, reads information from the RAM, the ROM, and the storage unit 32 during execution, writes information to the RAM and the storage unit 32, It exchanges signals with the communication unit 33 . In this way, the processing in this embodiment is realized by cooperation between hardware and software (programs).

The control unit 31 includes a reception unit 311, a parking determination unit 312, and a stay determination unit 313 as functional blocks.

<Receiver 311>
The receiving unit 311 receives continuous position information from a plurality of vehicles 50 together with time information. More specifically, the receiving unit 311 is a part that updates the location information database 322 based on continuous location information and mobile unit IDs received from the mobile unit via the communication unit 33 .

An example of the data structure of the position information database 322 will be described with reference to FIG. As shown in FIG. 5, the location information database 322 stores the “moving body ID”, “movement transition”, and “continuous location information and time information from the vehicle 50” received by the receiving unit 311, as well as “speed information” may be stored for each vehicle 50.

The “mobile body ID” in the location information database 322 is, as described above, information for identifying the in-vehicle navigation device 10 or mobile terminal 20 that is the source of the location information or the like, and the vehicle 50 equipped with these devices. .
“Movement transition” in the location information database 322 is all continuous location information received from the moving body from the start of transmission of the location information to the present. All of this continuous position information makes it possible to specify parking position information including parking position, parking date and time, and the like. It should be noted that the movement transition also includes time information at which the positioning of the position information was performed. Furthermore, when speed information is transmitted together with position information from a moving object, the received speed information is stored in association with the time information and the position information.

<Parking determination unit 312>
The parking determination unit 312 determines that the vehicle 50 is parked when it is determined that the vehicle position information has not changed for a predetermined period of time or longer. Moreover, the parking determination part 312 calculates the parking time of the said vehicle 50, when it determines with the vehicle 50 having parked. The parking determination unit 312 stores the position information determined that the vehicle 50 is parked as the parking position of the vehicle in the parking position information table 323 in association with the identification information of the vehicle 50 . The parking determination unit 312 also stores the parking time including date and time information at the parking position in the parking position information table 323 .

More specifically, for example, when the position information is received last after the transmission of the position information or the like is started once, and the position information is not transmitted for a predetermined time, the parking determination unit 312 receives the position information at the end. It may be determined that the position corresponding to the obtained position information is the parking position. In this case, the parking determination unit 312 may calculate the predetermined time during which no positional information is transmitted as the parking time of the vehicle 50 . Alternatively, if the position corresponding to the transmitted position information does not change for a certain period of time or more, this position may be determined to be the parking position. In this case, the parking determination unit 312 may calculate the time during which the position does not change as the parking time of the vehicle 50 .
In addition, in the continuous position information received from the vehicle 50, the interval between the times at which adjacent position information is measured exceeds or exceeds a preset first time, and a preset second time. is below or below, and any of the speed information of the adjacent position information is below or below a preset predetermined speed _V0 , the parking determination unit 312 determines that the vehicle is stopped. It may be determined that In this case, the parking determination unit 312 may calculate an interval between times when the adjacent position information is measured as the parking time of the vehicle 50 .
Here, the predetermined speed _V0 may be about the speed at which the vehicle is stopped in a parking lot, for example. Moreover, it is good also as 0 km/h. It may be set according to the characteristics of each vehicle 50 (characteristics of the driver when driving).
By doing so, for example, even if the device is a device that cannot transmit position information when the ignition is on and/or when the ignition is off, it is possible to identify the information that the vehicle is expected to stop.
When the vehicle 50 stops transmitting the position information of the vehicle 50 due to the ignition being turned off, for example, like the in-vehicle navigation device 10 in the current engine car, the position information of the vehicle 50 is transmitted immediately before the reception of the position information of the vehicle 50 stops. The current position may be used as the parking position. In this case, the parking determination unit 312 calculates the time from the stop of the transmission of the position information of the vehicle 50 to the next start of transmission of the position information of the vehicle 50 as the parking time of the vehicle 50. good too.
Similarly, when the vehicle 50 starts transmitting the positional information of the vehicle 50 when the ignition is turned on, for example, like the in-vehicle navigation device 10 in the current engine car, the current position at which the reception of the positional information of the vehicle 50 is started is It can also be used as a parking position. In this case, the parking determination unit 312 may calculate the time difference from the time when the transmission of the position information of the vehicle 50 is stopped as the parking time of the vehicle 50 before starting to receive the position information of the vehicle 50. good.
In addition, when the vehicle 50 can transmit stop signal information even when it is stopped, such as an electric vehicle, the current position indicated by the stop signal or the most recent position information of the vehicle 50 is used as the parking position. good too. In this case, the parking determination unit 312 may calculate the time from the reception of the stop signal information to the next reception of the activation signal information or the position information as the parking time of the vehicle 50 .
Similarly, if the vehicle 50 can transmit activation signal information when the vehicle 50 is activated, such as an electric vehicle, the current position indicated by the activation signal may be the parking position. In this case, the parking determination unit 312 may calculate the time difference from the time when the stop signal information or the position signal was last received from the vehicle 50 before receiving the track signal information as the parking time of the vehicle 50. good.

<Stay determination unit 313>
The stay determining unit 313 more accurately estimates the facility where the vehicle 50 is parked based on the parking position information of the vehicle 50 and the information regarding the shape of the facility in the facility information 321 stored in the storage unit 32. can be done.
Processing for the stay determination unit 313 to more accurately estimate the facility where the vehicle 50 is parked will be described with reference to FIGS. 6A to 6D. 6A to 6D are diagrams showing the relationship between the position of the vehicle and the shape of the facility.

As shown in FIG. 6A, the parking position of the vehicle 50 stored in the parking position information table 323 is indicated by information on the shape of the facility, etc. in the facility information 321 of one facility stored in the storage unit 32. , the stay determining unit 313 can determine that the vehicle 50 has stayed at the facility.
This makes it possible to more accurately estimate the facility where the vehicle is parked even when there is a vehicle positioning error.

Further, when the parking position of the vehicle 50 is not positioned within the shape of the facility indicated by the information regarding the shape of the facility in the facility information 321 of one facility stored in the storage unit 32, the stay determination unit 313 It is determined whether the shape of a circle with a predetermined radius centered on the parking position of the vehicle 50 includes part or all of the shape of the facility indicated by the information on the shape of the facility in the facility information 321 included in the storage unit 32. calculate.
As shown in FIG. 6B, when the shape of a circle with a predetermined radius centered on the parking position of the vehicle 50 includes only the shape of one facility, the stay determination unit 313 determines that the vehicle 50 has stayed at the facility. can be determined.
This makes it possible to more accurately estimate the facility where the vehicle is parked even when there is a vehicle positioning error.

On the other hand, as shown in FIG. 6C, when the shape formed by a circle with a predetermined radius centering on the parking position of the vehicle 50 includes some or all of the shapes of a plurality of facilities, the stay determination unit 313 Of the facilities, it may be determined that the user has stayed at a facility whose largest area is within the shape of a circle with a predetermined radius centered on the parking position of the vehicle 50 .
Specifically, as shown in FIG. 6C, for example, the area of the shape of facility B included in a circle with a predetermined radius centered on the parking position of the vehicle 50 is larger than the area of the shape of facility A included in the same circle. is wider, the stay determination unit 313 may determine that the vehicle 50 has stayed at the facility B.
If the area of the shape of facility A and the area of the shape of facility B included in the circle are the same size, for example, the area is calculated based on the circle with the changed radius, and the determination is made again. may
Thereby, for example, even if the facilities are adjacent to each other, it is possible to estimate which facility the vehicle 50 stayed at.

When the shape of a circle with a predetermined radius centered on the parking position of the vehicle 50 includes some or all of the shapes of a plurality of facilities, the determination of the facility where the vehicle 50 has stayed by the stay determination unit 313 is similar to the example described above. is not limited to
Description will be made with reference to FIG. 6D. Referring to FIG. 6D, when there is no significant difference between the area of the shape of facility A included in a circle with a predetermined radius centered on the parking position of vehicle 50 and the area of the shape of facility B included in the same circle, The stay determining unit 313, for example, refers to a facility parking time table (not shown) that associates a guideline for parking time with each type of facility in advance, and then selects the facility where the vehicle 50 stayed from among a plurality of facilities. You may make it judge.
Here, the facility parking time table indicates, for example, if the facility type is a convenience store, the approximate parking time for a vehicle at the convenience store is around 10 minutes, and if the facility type is a hospital, the parking time for a vehicle at the hospital is set. This is a table in which a standard parking time is associated with each type of facility in advance, for example, around one hour. It should be noted that these times are merely examples and are not limited to these values. A predetermined time range may be set as an indication of the parking time.
More specifically, for example, in FIG. 6D, if the parking time of the vehicle 50 is one hour, the facility A is a hospital, and the facility B is a convenience store, the stay determination unit 313 determines the facility where the vehicle 50 stayed. Facility A (hospital) may be determined.
As a result, by comparing the parking time of the vehicle 50 with the estimated parking time based on the facility type of the plurality of facilities, it is possible to determine which of the plurality of facilities the vehicle is most likely to have stayed at. can be estimated.
Also in the case shown in FIG. 6B, for example, if the parking time of the vehicle 50 is two hours, the facility A is a hospital, and the facility B is a convenience store, the stay determination unit 313 determines the The facility where the vehicle 50 stayed may be determined as the facility A (hospital), giving priority to the determination based on the estimated parking time.

Furthermore, when the shape of a circle with a predetermined radius centered on the parking position of the vehicle 50 includes some or all of the shapes of a plurality of facilities, the determination of the facility where the vehicle 50 has stayed by the stay determination unit 313 is as described above. are not limited to these two examples.
The vehicle position analysis device 30 has a history storage table (not shown) that stores, for each vehicle, facility stay history information including facilities where a plurality of vehicles 50 have been determined to have stayed in the past, information on the dates and times of stay, and the like. can be created and updated.
Then, the stay determination unit 313 refers to the facility stay history information of the vehicle 50 stored in the history storage table, and determines the facility where the vehicle 50 has stayed from among the plurality of facilities. good too.
More specifically, for example, referring to the facility stay history information of the vehicle 50 in FIGS. If it is determined that there are many cases where the vehicle 50 stayed, the stay determining unit 313 may determine that the facility where the vehicle 50 stayed is the facility A.
As a result, even if the parking position of the vehicle is not positioned within the shape of the facility, if there is a history of the vehicle staying at the same convenience store, hospital, etc. on a fixed date and / or stay time in the past, it will be based on it. Therefore, it is possible to more accurately estimate which facility the vehicle has stayed at.
As described above, when the shape of a circle with a predetermined radius centered on the parking position of the vehicle 50 includes some or all of the shapes of a plurality of facilities, it is possible to estimate which of the plurality of facilities the vehicle 50 has stayed at. Although three criteria are listed, the priority of these criteria may be set as appropriate.
In addition, when the stay determination unit 313 determines that the parking position of the vehicle is a predetermined facility, the parking position information table 323 described above includes the parking position and the parking time including the date and time information at the parking position. Facility information including an ID may be stored.
By doing so, the vehicle position analysis device 30 can create facility stay history information for each vehicle and update the history storage table based on the parking position information table 323 .
The configuration of each functional unit of the vehicle position analysis device 30 exemplified as the present embodiment has been described above.

<Operation of this embodiment>
Next, referring to the flowcharts shown in FIGS. 7A, 7B, 7C, and 7D, the operation of the present embodiment, specifically, the vehicle position analysis device 30 detects the parking position of the vehicle 50 from the parking position information. The operation of estimating the facility where the vehicle 50 stayed will be described. 7A, 7B, 7C, and 7D, the vehicle position analysis device 30 determines the parking position of the vehicle 50 based on the adjacent position information stored in the position information database 322 for each vehicle 50. 4 is a flow chart showing an operation of determining information (parking position, parking date and time, and parking time) and determining a facility where the user stayed based on the determined parking position information. It should be noted that the following operations are performed for each vehicle 50 .
As described above, the flowcharts shown in FIGS. 7B, 7C, and 7D are executed when the shape of a circle with a predetermined radius centered on the parking position of the vehicle 50 includes some or all of the shapes of a plurality of facilities. , a flow for each criterion when the vehicle position analysis device 30 determines which facility the vehicle 50 has stayed at.

First, referring to FIGS. 7A and 7B, the vehicle position analysis device 30 detects a facility whose largest area among a plurality of facilities exists within the shape of a circle with a predetermined radius centered on the parking position of the vehicle. The operation when it is determined that the user has stayed (also referred to as “case 1”) will be described.

Referring to FIG. 7A, in step S10, the presence or absence of an unprocessed vehicle ID is checked. If there is no unprocessed vehicle ID, the process ends. When there is an unprocessed vehicle ID, the vehicle ID is set as a processing target.

In step S11, the vehicle position analysis device 30 sequentially inputs the position information adjacent to the vehicle ID set as the processing target from the movement transition of the vehicle. Specifically, if adjacent position information (i-1) and position information (i) are input this time, adjacent position information (i) and position information (i+1) are input next time.

In step S12, the vehicle position analysis device 30 determines whether or not the input of adjacent position information has ended. If it is finished (if Yes), that effect is recorded, and the process proceeds to step S10. If not completed (No), the process moves to step S13.

In step S13, the vehicle position analysis device 30 determines whether or not the vehicle is parked based on the adjacent position information input this time. If it is determined that the vehicle is parked (Yes), the process proceeds to step S14. When it determines with not parking (in the case of No), it moves to step S11.

In step S14, the vehicle position analysis device 30 calculates parking information (parking position, parking date and time, and parking time).

In step S15, the vehicle position analysis device 30 determines that the parking position of the vehicle 50 is stored in the storage unit 32, is not located within the shape of any facility, and is within a predetermined radius centered on the parking position of the vehicle 50. If the circular shape does not include the shape of any facility (Yes), the process proceeds to step S16. Otherwise (No), the process proceeds to step S17.

In step S<b>16 , the vehicle position analysis device 30 makes unknown the facility where the person stayed. At this time, the vehicle position analysis device 30 adds facility information indicating that the facility where the person stayed is unknown in addition to the position information (parking position, parking date and time, and parking time), and links the vehicle 50 to the parking position information table 323 . You can save it by attaching it to it. After that, the process moves to step S11.

In step S17, the vehicle position analysis device 30 determines whether the parking position of the vehicle 50 is located within the shape of one facility stored in the storage unit 32, or is located within a predetermined radius around the parking position of the vehicle 50. If the circular shape includes the shape of one facility (Yes), the process proceeds to step S18. Otherwise (No), the process proceeds to step S19.

In step S18, the vehicle position analysis device 30 presumes that the vehicle 50 has stayed at the one facility, and in addition to the position information (parking position, parking date and time, and parking time), the facility information that is presumed to have stayed (Facility ID, etc.) is added and stored in the parking position information table 323 in association with the vehicle 50 . After that, the process moves to step S11.

Next, referring to FIG. 7B, in step S19, the vehicle position analysis device 30 calculates the area of each of a plurality of facilities existing within a circle of a predetermined radius centered on the parking position of the vehicle 50. calculate.

In step S20, the vehicle position analysis device 30 identifies the facility with the widest area among a plurality of facilities existing within a circle of a predetermined radius centered on the parking position of the vehicle 50, and identifies the facility with the largest area. Presumed to have stayed at the facility.

In step S21, the vehicle position analysis device 30 adds facility information (facility ID, etc.) where the vehicle 50 is estimated to have stayed in step S21, in addition to the position information (parking position, parking date and time, and parking time). is stored in the parking position information table 323 in association with the vehicle 50 . After that, the process moves to step S11.
The operation of the vehicle position analysis device 30 has been described above for one example in which the shape formed by the circle of a predetermined radius centered on the parking position of the vehicle 50 includes part or all of the shapes of a plurality of facilities. .

Next, referring to FIGS. 7A and 7C, the vehicle position analysis device 30 refers to a facility parking time table that associates an estimated parking time with each type of facility set in advance among a plurality of facilities. In addition, the operation when estimating the facility where the vehicle 50 stayed from among the plurality of facilities (also referred to as “case 2”) will be described.
In this case, the flow described in FIG. 7A is common, but if it is determined No in step S17 in FIG. 7A, it is read as moving to step S19' in FIG. 7C.

Referring to FIG. 7C, in step S19′, the vehicle position analysis device 30 prepares a facility parking time table for each of a plurality of facilities existing within a circle having a predetermined radius centered on the parking position of the vehicle 50. Refer to this to obtain an estimate of parking time for each facility.

In step S20', the vehicle position analysis device 30 identifies the facility where the actual parking time of the vehicle 50 is closest to the estimated parking time of each facility acquired in step S19'. estimated to have stayed in

In step S21', the vehicle position analysis device 30, in addition to position information (parking position, parking date and time, and parking time), stores facility information (facility ID, etc.) where the vehicle 50 is estimated to have stayed in step S20'. It is added and stored in the parking position information table 323 in association with the vehicle 50 . After that, the process moves to step S11 shown in FIG. 7A.
The operation of the vehicle position analysis device 30 in the second embodiment in the case where the shape of a circle with a predetermined radius centered on the parking position of the vehicle 50 includes part or all of the shapes of a plurality of facilities has been described above. bottom.

Next, referring to FIGS. 7A and 7D , vehicle position analysis device 30 refers to facility stay history information in which vehicle 50 was determined to have stayed at a facility in the past, among a plurality of facilities. The operation in the case of estimating the facility where the vehicle 50 stayed from among the facilities (also referred to as “case 3”) will be described.
In this case, the flow described in FIG. 7A is common, but if it is determined as No in step S17 in FIG. 7A, it is read as moving to step S19'' in FIG. 7D.

Referring to FIG. 7D, in step S19'', the vehicle position analysis device 30 determines whether the vehicle 50 is located in each of a plurality of facilities existing within a circle having a predetermined radius centered on the parking position of the vehicle 50. By referring to whether or not there is a history of parking at the plurality of facilities in the past, the parking pattern of the vehicle 50 (for example, parking date and time, parking time period, day of the week, parking time, number of times of parking, etc.).

In step S20'', the vehicle position analysis device 30 identifies the facility where the actual parking time of the vehicle 50 is closest to the parking pattern at each facility acquired in step S19'', and the vehicle 50 stays at the facility. We estimate that For example, a facility that has been parked more frequently and has a similar parking time or parking date and time may be estimated as a facility to stay.

In step S21'', the vehicle position analysis device 30 collects the position information (parking position, parking date and time, and parking time), as well as facility information (facility ID, etc.) where the vehicle 50 is estimated to have stayed in step S20''. ) is added and stored in the parking position information table 323 in association with the vehicle 50 . After that, the process moves to step S11 shown in FIG. 7A.
The operation of the vehicle position analysis device 30 in the third embodiment in the case where the shape of a circle with a predetermined radius centered on the parking position of the vehicle 50 includes part or all of the shapes of a plurality of facilities has been described above. bottom.
In the above description, regarding the operation when the shape of a circle with a predetermined radius centered on the parking position of the vehicle 50 includes some or all of the shapes of a plurality of facilities, the flow for each determination criterion has been described. However, it is not limited to this. As noted above, any priority may be set and these criteria applied accordingly.

According to the present embodiment described above, even if there is a positioning error of the vehicle 50, the vehicle position analysis device 30 and the vehicle position analysis method are capable of more accurately estimating the facility where the vehicle 50 is parked. can be provided.

<About hardware and software>
Each device included in the above navigation system can be realized by hardware, software, or a combination thereof. Also, the navigation method performed by cooperation of each device included in the above navigation system can also be realized by hardware, software, or a combination thereof. Here, "implemented by software" means implemented by a computer reading and executing a program.

The program can be stored and delivered to the computer using various types of non-transitory computer readable media. Non-transitory computer-readable media include various types of tangible storage media. Examples of non-transitory computer-readable media include magnetic recording media (e.g., flexible discs, magnetic tapes, hard disk drives), magneto-optical recording media (e.g., magneto-optical discs), CD-ROMs (Read Only Memory), CD- R, CD-R/W, semiconductor memory (eg, mask ROM, PROM (Programmable ROM), EPROM (Erasable PROM), flash ROM, RAM (random access memory)). The program may also be delivered to the computer on various types of transitory computer readable medium. Examples of transitory computer-readable media include electrical signals, optical signals, and electromagnetic waves. Transitory computer-readable media can deliver the program to the computer via wired channels, such as wires and optical fibers, or wireless channels.

<Modification 1>
The above-described embodiments are preferred embodiments of the present invention, but the scope of the present invention is not limited only to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention. can be implemented.
For example, the functional configurations of FIGS. 2, 3, and 4 are merely examples, and do not limit the functional configuration of this embodiment. That is, it is sufficient for each device to have a function capable of executing a series of processes related to the vehicle position analysis function of the present invention as a whole. It is not limited to the examples of FIGS. 3 and 4. FIG.
In addition, the above-described embodiment may be modified, for example, as modified examples described below. In addition, you may make it further combine the modification demonstrated below.

<Modification 2>
In the above-described embodiment, the vehicle position analysis device 30 is realized by one server device or the like, but each function of the vehicle position analysis device 30 may be distributed to a plurality of server devices as appropriate, and may be a distributed processing system. Also, each function of the vehicle position analysis device 30 may be implemented using a virtual server function or the like on the cloud.

<Modification 3>
In the above-described embodiment, the vehicle position analysis device 30 is configured to receive identification information, position information, time information, etc. of the vehicle 50 from each vehicle 50 via the communication unit 33 . Further, the receiving unit 311 is configured to appropriately create and update the position information database 322 based on the identification information, position information, time information, etc. received from each vehicle 50 .
On the other hand, for example, an FCD (Floating Car Data) server (tentative name) is provided separately from the vehicle position analysis device 30, and the FCD server receives from each vehicle 50 the identification information of the vehicle 50, the position information, and the time Information or the like may be received. In that case, the vehicle position analysis device 30 may acquire the position information and the like of each vehicle from the FCD server, and create and update the position information database 322 (movement transition) as appropriate.

1 vehicle position analysis system 10 in-vehicle navigation device 11 control unit 111 route guidance unit 112 position information transmission unit 12 storage unit 13 communication unit 14 sensor unit 20 mobile terminal 21 control unit 111 route guidance unit 112 position information transmission unit 22 storage unit 23 communication Unit 24 Sensor unit 30 Vehicle position analysis device 31 Control unit 311 Reception unit 312 Parking determination unit 313 Stay determination unit 32 Storage unit 321 Facility information 322 Location information database 323 Parking location information table 50, 50a, 50b Vehicle 60 Communication network

Claims (2)

a map information storage unit that stores facility information including location information including the shapes of the facilities for a plurality of facilities;
a receiving unit that receives continuous position information from a plurality of vehicles together with time information;
a parking determination unit that determines that the vehicle is parked when the position information does not change for a predetermined time or more, and stores the position information determined that the vehicle is parked in a parking position storage unit as the parking position of the vehicle; ,
estimating that the vehicle has stayed at the facility when the parking position of the vehicle is located within the shape of one facility stored in the map information storage unit;
If the parking position of the vehicle is not located within the shape of one facility stored in the map information storage unit, it is calculated whether a shape formed by a circle with a predetermined radius centered on the parking position includes the shape of the facility. and a stay determination unit that determines that the vehicle has stayed at the facility when the shape of the facility is included,
The stay determination unit further
The parking position of the vehicle is not located within the shape of one facility stored in the map information storage unit, and the shape formed by a circle with a predetermined radius centered on the parking position of the vehicle includes the shapes of a plurality of facilities. case, the vehicle position analyzing apparatus determines that the user has stayed at a facility whose largest area among the plurality of facilities is within a shape of a circle with a predetermined radius centered on the parking position of the vehicle. A vehicle position analysis method executed by a computer provided with a map information storage unit for storing facility information including position information about a plurality of facilities including the shapes of the facilities, the vehicle position analysis method comprising:
a receiving step of receiving continuous position information from a plurality of vehicles together with time information;
a parking determination step of determining that the vehicle is parked when the position information does not change for a predetermined time or more, and storing the position information determined that the vehicle is parked in a parking position storage unit as the parking position of the vehicle; ,
estimating that the vehicle has stayed at the facility when the parking position of the vehicle is located within the shape of one facility stored in the map information storage unit;
If the parking position of the vehicle is not located within the shape of one facility stored in the map information storage unit, it is calculated whether a shape formed by a circle with a predetermined radius centered on the parking position includes the shape of the facility. and a stay determination step of determining that the vehicle has stayed at the facility when the shape of the facility is included,
The stay determination step further includes:
The parking position of the vehicle is not located within the shape of one facility stored in the map information storage unit, and the shape formed by a circle with a predetermined radius centered on the parking position of the vehicle includes the shapes of a plurality of facilities. case, the vehicle position analysis method is characterized in that it is determined that the person stayed at a facility whose largest area among the plurality of facilities is within a shape formed by a circle of a predetermined radius centered on the parking position of the vehicle.

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