WO2019065328A1 - Parking space estimation device and parking space estimation method - Google Patents

Abstract

Estimate parking lot more appropriately than before. The parking lot estimation device 30 determines the mesh area where the mobile object parked a plurality of times as the determination target area based on the position information of a plurality of mobile bodies, and the parking lot estimation unit 314 is a parking lot And a facility parking lot estimation unit 318 configured to estimate, as a mesh area of the facility parking lot, an area obtained by excluding the mesh area of the home parking lot estimated by the home parking lot estimation unit 317 from the determination target area estimated to be.

Description

Parking lot estimation device and parking lot estimation method

The present invention relates to a parking lot estimation device and a parking lot estimation method for estimating a parking lot.

BACKGROUND Conventionally, there has been known a technology for acquiring position information of a mobile body such as a car and performing various processing using the acquired position information. For example, there is known a technique for estimating a parking lot based on position information of a mobile.

In addition, in recent years, a large number of position information of a plurality of mobile bodies has been analyzed by big data, and a new movement has been made to use this analysis result for applications such as local government tourism measures and road maintenance plans. Patent Document 1 discloses an example of an analysis technique using such position information of a mobile body. Specifically, Patent Document 1 discloses a technique for grasping the migration behavior of a user such as a tourist by analyzing log correlation information from a plurality of users and analyzing the correlation between points included in the log information. It is done.

Unexamined-Japanese-Patent No. 2017-27221

When the analysis is performed using the technology disclosed in Patent Document 1 etc., if the analysis is performed without dividing the map, the amount of calculation of a computer that executes the analysis becomes enormous. Therefore, for example, the map is divided into meshes having a certain area, and the correlation between the meshes is analyzed to reduce the amount of calculation.

However, when the processing divided into meshes is performed, it may be difficult to appropriately estimate the parking lot based on the position information of the moving object. For example, the parking lot of a private residence and the parking lot of a facility may be judged by mistake about the place where facilities, such as a private residence and commercial facilities, are mixed.
Then, if the map information is updated based on the erroneous determination result as described above, there arises a problem that it is not possible to appropriately perform big data analysis or the like thereafter.

The present invention has been made in view of such problems, and the present invention provides a parking lot estimation device and a parking lot estimation method capable of estimating a parking lot more appropriately than in the prior art. Intended to be provided.

(1) A parking lot estimation apparatus (for example, a parking lot estimation apparatus 30 described later) according to the present invention is capable of managing map information including facility information and road information in mesh area units divided into predetermined areas A receiver (for example, a map management unit 312 described later), and a receiver (for example, a communication unit 33 described later) which receives position information of a plurality of mobile objects (for example, a vehicle 50 described later) together with identification information of each mobile object A determination target area specifying unit (for example, a determination target area specifying unit 313 described later) that specifies, as a determination target area, a mesh area in which the mobile is parked a plurality of times based on position information of the plurality of mobiles; It is determined based on the identification information of the mobile unit whether or not parking in multiple times in the target region is parking by an unspecified mobile unit, and a determination target region determined to be parking of an unspecified mobile unit With a parking candidate A parking lot estimation unit (for example, a parking lot estimation unit 314 described later) to be determined, and an attribute assigning unit that assigns a parking lot attribute to the determination target area estimated to be the parking lot candidate based on the facility information (For example, a parking lot attribution unit 315 described later) and a determination target area determined to be the parking lot candidate, and for each moving object, the determination target area having the largest number of parking times in a fixed period is parked at home A parking lot attribute in which the attribute adding unit assigns a parking area candidate extraction unit (for example, a home parking lot candidate extraction unit 316 described later) extracted as a parking lot candidate and a determination target area extracted as the home parking lot candidate From the home parking lot estimation unit (for example, a home parking lot estimation unit 317 described later) which estimates as a mesh area of the home parking lot, taking into account the above, and the determination target area estimated by the parking lot estimation unit as a parking lot, Facility parking lot estimation unit (for example, facility parking lot estimation unit 318 described later) which estimates the area excluding the mesh area of the home parking lot estimated by the home parking lot estimation unit as the mesh area of the facility parking lot Prepare.

According to the parking lot estimation device of the above (1), it is possible to estimate a facility parking lot to which a parking lot attribute is assigned as a parking lot of a facility excluding a home parking lot in mesh units.

(2) In the parking lot estimation device according to (1), the reception unit further receives either or both of start information and stop information of the plurality of mobile bodies as ignition information, and the attribute giving unit In addition, a parking lot attribute may be provided with a statistical value based on the parking date, the stop time of the mobile body specified by the ignition information, and the number of times of parking of the mobile body.

According to the parking lot estimation device of the above (2), it is possible to give a parking lot attribute based on information such as a coffee shop crowded on Sunday and staying for a long time, not simply an attribute such as a "coffee shop". An effect of.

(3) The parking lot estimation device according to (1) or (2), wherein the attribute adding unit further includes a plurality of facility information on a plurality of facilities in the determination target area estimated as the parking lot candidate. If there exist, a complex facility attribute may be assigned to indicate that a plurality of facilities exist.

According to the parking lot estimation device of the above (3), there is a possibility that a plurality of facilities exist in the mesh in order to estimate the parking lot in mesh units, and more accurate data can be obtained by giving the compound facility attribute The effect is that it can be used.

(4) The parking lot estimation method of the present invention is a parking lot estimation method performed by a computer (for example, a parking lot estimation device 30 described later), and the map information including the facility information and the road information has a predetermined area A map management step capable of managing a map in divided mesh area units, a receiving step of receiving position information of a plurality of moving bodies (for example, vehicle 50 described later) together with identification information of each moving body, and the plurality of moving bodies The determination target area specifying step of specifying the mesh area in which the mobile object parked a plurality of times as the judgment target area based on the position information of and the plurality of parkings in the judgment target area are parking by unspecified mobile bodies. Parking area estimation step of determining a determination target area determined as parking of an unspecified mobile body as a parking lot candidate, and determining whether or not the mobile body is identified based on the identification information of the mobile body; An attribute giving step of giving a parking lot attribute based on the facility information to the judgment target area estimated as a field candidate, and a judgment target area judged to be the parking lot candidate, each moving object , The home parking area candidate extraction step of extracting the judgment target area having the largest number of parking times as a home parking lot candidate within a fixed period, and the judgment target area extracted as the home parking lot candidate, The home parking lot estimation step from the home parking lot estimation step of estimating the mesh area of the home parking lot in consideration of the given parking lot attribute and the determination target area estimated as the parking lot in the parking lot estimation step And a facility parking lot estimation step of estimating an area excluding the estimated mesh area of the home parking lot as a mesh area of the facility parking lot.

According to the method of (4) above, the same effect as the parking lot estimation device of (1) can be obtained.

According to the present invention, it is possible to estimate a parking lot more appropriately than in the prior art.

BRIEF DESCRIPTION OF THE DRAWINGS It is a block diagram which shows the basic composition of the parking lot estimation system which is embodiment of this invention. It is a functional block diagram showing the functional composition of the in-vehicle navigation device in the embodiment of the present invention. It is a functional block diagram showing functional composition of a personal digital assistant in an embodiment of the present invention. It is a functional block diagram showing functional composition of a parking lot estimating device in an embodiment of the present invention. It is a figure which shows the example of the information database for every drive in embodiment of this invention. It is a figure (1/2) shown about management by a mesh field in an embodiment of the present invention. It is a figure (2/2) shown about management by a mesh field in an embodiment of the present invention. It is a schematic diagram for demonstrating the estimation of the parking lot area | region in embodiment of this invention. It is a schematic diagram for demonstrating estimation of the home parking lot and facility parking lot in embodiment of this invention. It is a figure which shows the example of the parking lot characteristic database in embodiment of this invention. It is a flowchart which shows the basic operation | movement in embodiment of this invention.

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the drawings.

<Overall Configuration of Parking Lot Estimation System 1>
A parking lot estimation system 1 according to a preferred embodiment of the present invention will be described. FIG. 1 shows the overall configuration of the parking lot estimation system 1.

As shown in FIG. 1, the parking lot estimation system 1 is configured to include an on-vehicle navigation device 10, a portable terminal 20, and a parking lot estimation device 30. These devices and terminals are communicably connected to each other via the communication network 40. In addition, in the figure, although illustrated about the positional information and identification information which are transmitted / received by these each apparatuses and each terminal, such information is an example transmitted / received. In the present embodiment, information other than the above information may be transmitted and received.

The in-vehicle navigation device 10 is a device that performs navigation (route guidance) for the user who has got on the vehicle 50a. The on-vehicle navigation device 10 provides route guidance from the current position to the destination based on the user's request. In addition, the in-vehicle navigation device 10 also has a function of measuring the position information of the in-vehicle navigation device 10. The position information measured by the in-vehicle navigation device 10 is appropriately transmitted to the parking lot estimation device 30 together with identification information for identifying the in-vehicle 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 and identification information can be substantially regarded as position information and identification information of the vehicle 50a. .
The in-vehicle navigation device 10 can be realized by a car navigation device installed in a vehicle 50a, which is a moving body, or a portable PND (Portable Navigation Device) which is simply installed in the vehicle 50a, which is a moving body. .

The portable terminal 20 is a portable terminal used by a user who gets on the vehicle 50b. The mobile terminal 20 has a function of measuring the position information of the mobile terminal 20 (that is, the position information of the vehicle 50b), as in the case of the on-vehicle navigation device 10 described above. The position information measured by the mobile terminal 20 is appropriately transmitted to the parking lot estimation device 30 together with identification information for identifying the mobile terminal 20, similarly to the position information measured by the in-vehicle navigation device 10. Here, since the portable terminal 20 and the vehicle 50a are used as a one-to-one pair, the transmitted position information and identification information can be regarded substantially as position information and identification information of the vehicle 50a.
The mobile terminal 20 can be realized by a smartphone, a mobile phone, a tablet terminal, a notebook computer, or another portable electronic device.

In the drawing, although the set of the in-vehicle navigation device 10 and the vehicle 50a and the set of the portable terminal 20 and the vehicle 50b are illustrated, there is no particular limitation on the number of sets. Further, in the following description, when calling without distinction the vehicle 50a on which the in-vehicle navigation device 10 is mounted and the vehicle 50b on which the user using the portable terminal 20 gets, the alphabet at the end is simply omitted It is called "vehicle 50".

The parking lot estimation device 30 is a device for estimating a parking lot, and performs estimation that distinguishes between a parking lot of a facility such as a commercial facility (sometimes called POI (Point Of Interest)) and a home parking lot. . Therefore, the parking lot estimation device 30 can estimate the parking lot more appropriately than in the related art.
The parking lot estimation device 30 stores map information including parking lot information. In addition, the parking lot estimation device 30 acquires the position information and the identification information of each vehicle 50 from the in-vehicle navigation device 10 and the portable terminal 20, thereby providing drive-by-drive information that is a database of position information for each drive of each vehicle 50. Create a database
Further, the parking lot estimation device 30 estimates the position of the parking lot based on the position information and identification information of each vehicle 50 stored in the drive information database, and updates the map information based on the estimation result. The map information updated by the parking lot estimation device 30 is used, for example, for the above-described big data analysis. In addition, the map information updated by the parking lot estimation device 30 may be distributed to the in-vehicle navigation device 10 or the portable terminal 20. Thus, the in-vehicle navigation device 10 and the portable terminal 20 can update the map information stored therein. Therefore, it becomes possible to perform navigation (route guidance) to the position of the parking lot estimated by the parking lot estimation device 30 in the in-vehicle navigation device 10 or the portable terminal 20.
The parking lot estimation device 30 can be realized by, for example, a server device.

The communication network 40 is realized by a network such as the Internet or a mobile phone network, or a network combining these.

The vehicle 50 is a mobile body on which the user of the in-vehicle navigation device 10 and the portable terminal 20 get on. The vehicle 50 is realized by, for example, a four-wheeled vehicle, a motorcycle, a bicycle, or the like.

<Functional block provided in in-vehicle navigation device 10>
Next, functional blocks included in the in-vehicle navigation device 10 will be described with reference to the block diagram of FIG.
Here, the in-vehicle navigation device 10 receives power supply from the vehicle 50a, and is automatically activated by the user who gets on the vehicle 50a turning on the ignition switch of the vehicle 50a (starting the engine). Then, 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 who got on the vehicle 50a.

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

The control unit 11 is configured of an arithmetic processing unit such as a microprocessor and controls each unit constituting the unit 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 performs processing for transmitting control information called firmware or an operating system, a program for performing route guidance processing, and position information to the parking lot estimation device 30. And various other information such as map information. In the drawing, position information 121, identification information 122, and map information 123, which are related to the description of the present embodiment, are illustrated as information stored in the storage unit 12.

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 described later. The position information 121 is realized by, for example, information of latitude and longitude indicating a position. Further, the position information 121 includes not only the information indicating the measured position but also the information indicating the positioning time at which the positioning was performed.

The identification information 122 is information for identifying the in-vehicle navigation device 10. As the identification information 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 to connect the communication unit 13 to the communication network 40 which is a network such as a mobile telephone network, the telephone number given to the SIM (Subscriber Identity Module) inserted in the communication unit 13 is identified information 122 It can be used as In addition, VIN (vehicle identification number) uniquely assigned to the vehicle 50a and the number of the license plate can be used as the identification information 122.
The identification information 122 may further include attribute information on parking of the vehicle 50a. The attribute information is information for specifying the size of the parking space required for the vehicle 50a to park, and is, for example, a value indicating the category type of the vehicle 50a or the size of the vehicle 50a. The category type means, for example, types such as mini cars, small cars, ordinary cars, and large cars. The value indicating the size of the vehicle 50a refers to, for example, a value indicating the full length, full width, and full height of the vehicle 50a.

Furthermore, the map information 123 includes, for example, information such as road information, facility position information, and parking lot information as information on features such as roads and facilities. Further, the map information 123 additionally includes display map data for displaying a background such as a road and a road map, position information of nodes (for example, intersections of roads, bend points, end points, etc.) and type information thereof It includes road network data including link position data and type information of links, which are routes connecting between nodes, and link cost data on cost information (for example, distance, required time, etc.) of all links.

As road information, information on so-called road maps such as road types and traffic lights is stored.
As facility position information, position information of each facility is stored as information of latitude and longitude. In addition, as facility location information, facility identification information (facility ID), name, facility type (and / or genre), telephone number, address, business hours, menus provided if the facility is a restaurant, product service etc. Incidental information such as facility information may be included.

As parking lot information, position information of the parking lot is stored. Similar to the position information 121, the position information of the parking lot is realized by, for example, information of latitude and longitude indicating the position. When a parking lot is a parking lot of each facility, the facility and the parking lot are linked and stored. In addition, as the parking lot information, information such as the parking available time of the parking lot, the number of parked cars, the size of the parkable vehicle 50 and the like are stored. The parking lot information includes not only the parking lot information included in the map information 123 from the beginning but also the map information generated by the parking lot estimation device 30 by estimation and distributed to the in-vehicle navigation device 10 There is.

The map information 123 may be stored in advance in the storage unit 32 when the in-vehicle navigation device 10 is manufactured, or the parking lot estimation device 30 connected to the communication network 40 or another server device (not shown). Or the like may be appropriately downloaded as needed. Furthermore, it may be appropriately corrected according to the user's input or the like.

The communication unit 13 has a DSP (Digital Signal Processor) and the like, and communicates via the communication network 40 in accordance with standards such as 3G (3rd Generation), LTE (Long Term Evolution) and Wi-Fi (registered trademark). The wireless communication with other devices (for example, the parking lot estimation device 30) via the network 40 is realized. The communication unit 13 is used, for example, for the position information transmission unit 112 described later to transmit the position information 121 and the identification information 122 stored in the storage unit 12 to the parking lot estimation device 30. However, there is no restriction | limiting in particular in the data transmitted / received between the communication part 13 and another apparatus, Information other than the positional information 121 and the identification information 122 may be transmitted / received.

The sensor unit 14 is configured of, for example, a GPS (Global Positioning System) sensor, a gyro sensor, an acceleration sensor, and the like. The sensor unit 14 has a function as position detection means for detecting position information, receives a GPS satellite signal by a GPS sensor, and measures the position information (latitude and longitude) of the in-vehicle navigation device 10. The positioning by the sensor unit 14 is performed at a predetermined time interval (for example, an interval of 3 seconds) as described above. The position information that has been measured is stored in the storage unit 12 as position information 121.
The sensor unit 14 can further enhance the positioning accuracy of the position information of the in-vehicle navigation device 10 based on the angular velocity measured by the gyro sensor or the acceleration sensor, or the acceleration.
Further, when GPS communication becomes difficult or impossible, the sensor unit 14 uses Assisted Global Positioning System (AGPS) communication, and the position information of the in-vehicle navigation device 10 according to the base station information acquired from the communication unit 13 It is also possible to calculate

The display unit 15 is configured of 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 information displayed by the display unit 15 includes, for example, the current position of the in-vehicle navigation device 10, the map information around the current position of the in-vehicle navigation device 10 read from the map information 123, the destination set by the user, and the like Meeting information notified from the in-vehicle navigation device 10, route information, various user interfaces, and the like can be mentioned.

The input unit 16 is configured by a physical switch called a ten key or an input device (not shown) such as a touch panel provided overlapping on the display surface of the display unit 15 or the like. By outputting to the control unit 11 an operation input from the input unit 16, for example, pressing of a ten key by the user, or a signal based on a touch of the touch panel, an operation such as selection operation by the user or enlargement / reduction of a map can be realized. it can.

In addition, although not shown, a speaker, a microphone, etc. can also be provided. The speaker outputs a sound to the driver, and the microphone collects sound and the like emitted by the driver.
By doing so, it is also possible to output information as voice from a speaker, or to input various selections and instructions by the driver voice-inputted via a microphone to the control unit 11 by voice recognition technology.

Next, details of the control unit 11 will be described. The control unit 11 is configured by a microprocessor having a central processing unit (CPU), a random access memory (RAM), a read only memory (ROM), and an input / output (I / O). The CPU executes each program read from the ROM or the storage unit 12, reads the information from the RAM, the ROM, and the storage unit 12 at the time of execution, and writes the 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. And, in this way, the processing in the present embodiment is realized by the hardware and software (program) working together.

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

The route guidance unit 111 is a part that performs route guidance processing to a destination, such as a facility, which has been input or selected by the user.
The route guidance processing to the destination is equivalent to the route guidance processing in a general car navigation system. That is, the route guidance unit 111 generates a map to the destination based on the map information 123 stored in the storage unit 12, and the current position of the in-vehicle navigation device 10 positioned by the sensor unit 14 on this map. By overlapping the position of the destination and the route information to the destination and displaying the same on the display unit 15, route guidance can be performed. In this case, a voice for route guidance may be output from a speaker (not shown). Further, information on congestion of roads, information on weather, and the like may be acquired by communication by the communication unit 13, and the acquired information may be used for route guidance processing.
The route guidance processing to the destination is well known to those skilled in the art, and thus the detailed description thereof will be omitted.

The position information transmission unit 112 is a portion that transmits the position information 121 and the identification information 122 stored in the storage unit 12 to the parking lot estimation device 30 by wireless communication using the communication unit 13.

Transmission of the position information 121 and the identification information 122 to the parking lot estimation device 30 by the position information transmission unit 112 is performed by turning on the ignition switch of the vehicle 50a (starting the engine) by the user who got on the vehicle 50a. Is automatically performed, and is periodically performed until the ignition switch of the vehicle 50a is turned off (the engine is stopped). For example, each time the sensor unit 14 performs positioning at a predetermined time interval (for example, an interval of 3 seconds), transmission is performed in real time. Also, instead of transmitting to the parking lot estimation device 30 in real time, a plurality of them (for example, position information 121 and identification information 122 collectively updated at an interval of 3 seconds in 3 minutes) 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 transmit in real time or to perform burst transmission can be arbitrarily set according to the environment to which the present embodiment is applied.

Thus, by performing real-time transmission and burst transmission, the position information transmission unit 112 parks the position information 121 for identifying the movement route of the vehicle 50a measured by the sensor unit 14 and the identification information 122 It transmits to the parking lot estimation device 30. As described above, the position information 121 includes not only the information indicating the measured position but also the information indicating the positioning time at which the positioning was performed.

Further, the position information transmission unit 112 sets the position specified by the position information 121 positioned immediately after the ignition switch is turned on (starts the engine) and the on-vehicle navigation device 10 is automatically started, ie, the first vehicle position It can be transmitted to the parking lot estimation device 30 as a position. Furthermore, the position specified by the position information 121 located immediately before the ignition switch is turned off (engine stop) can be transmitted to the parking lot estimation device 30 as the final vehicle position, that is, the parking position.
In this case, after the start information indicating that it is the position information 121 indicating the departure position and the stop information indicating that it is the position information 121 indicating the parking position are added to the position information 121, Make it send. For example, a flag indicating that it is start information may be set to 1 for transmission, or a flag indicating that it is stop information may be set to 1 for transmission. In addition, about the positional information 121 (namely, parking position) located just before an ignition switch is turned off (engine stop), an ignition switch is then turned on again (engine is started) and the vehicle-mounted navigation apparatus 10 is started again. It may be sent when you

Further, even in the case of performing burst transmission, when the route guidance unit 111 determines that the vehicle 50a has arrived at a destination (for example, a certain facility), the position information transmission unit 112 transmits in real time You should switch as you do. In this way, after arriving at a certain facility, the ignition switch is turned off (engine is stopped) before the location information 121 of the parking position is transmitted, and the location information 121 of the destination such as the facility is a parking lot. It is possible to prevent a situation in which it is not transmitted to the estimation device 30.

<Functional Block of Mobile Terminal 20>
Next, functional blocks included in the mobile terminal 20 will be described with reference to the block diagram of FIG. 3.
Here, although the on-vehicle navigation device 10 described above receives the supply of power from the vehicle 50a, the portable terminal 20 receives the supply of power from a battery (not shown) provided in itself. However, in order to charge the battery, the portable terminal 20 may receive power supply from a cigar socket or the like of the vehicle 50b.

As shown in FIG. 2, the portable 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 distance communication unit 27. It 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 the same functions as the functional blocks of the same name included in the on-vehicle navigation device 10 described above. Have.
The storage unit 22 also stores position information 221, identification information 222, and map information 223. These pieces of information are equivalent to the information of the same name stored in the storage unit 22 of the on-vehicle navigation device 10 described above.
That is, each function of the portable terminal 20 can be obtained by replacing the word "mobile navigation device 10" in the description of the above-described in-vehicle navigation device 10 with "mobile terminal 20" and replacing the word "vehicle 50a" with "vehicle 50b". The description of the block will be omitted, so redundant description will be omitted.

On the other hand, the portable terminal 20 is different from the in-vehicle navigation device 10 in that the portable terminal 20 includes the short distance communication unit 27 and the like, and thus the difference will be described below.
The short distance communication unit 27 performs non-contact short distance communication conforming to a standard such as NFC (Near Field Communication) or Bluetooth (registered trademark), or performs short distance communication by wire via a USB (Universal Serial Bus) cable or the like. It is part of.
On the other hand, the vehicle 50 b includes a short distance communication unit for communicating with the short distance communication unit 27. For example, an ECU (Electronic Control Unit) of the vehicle 50b includes a short distance communication unit.
Then, the case where the portable terminal 20 can communicate with the ECU by short-distance communication means that the portable terminal 20 exists in the vehicle 50b. In this case, the position information measured by the sensor unit 24 of the mobile terminal 20 corresponds to the position information of the vehicle 50b. The identification information 222 stored in the portable terminal 20 corresponds to the identification information of the vehicle 50b.

Therefore, while the portable terminal 20 can perform short distance communication with the ECU via the short distance communication unit 27, the position information transmission unit 212 is activated. Then, the position information transmitting unit 212 which has been activated is, similarly to the position information transmitting unit 112 of the in-vehicle navigation device 10, position information 221 for identifying the moving route of the vehicle 50b measured by the sensor unit 24; And to the parking lot estimation device 30.

For example, when the user carries the portable terminal 20 and gets on the vehicle 50b and turns on the start switch of the vehicle 50b, such as an ignition switch, the vehicle 50b and the portable terminal 20 are connected (paired) and The position information 221 and the identification information 222 thus measured are transmitted from the portable terminal 20 to the parking lot estimation device 30. In this case, the position specified by the position information 121 measured immediately after pairing of the vehicle 50b and the portable terminal 20 can be transmitted to the parking lot estimation device 30 as the first vehicle position, that is, the departure position.

Furthermore, when the start switch of the vehicle 50b such as an ignition switch is turned off, the pairing of the vehicle 50b and the portable terminal 20 is released. In this case, the position specified by the position information 121 positioned immediately before the cancellation can be transmitted to the parking lot estimation device 30 as the final vehicle position, that is, the parking position.
In this case, it is determined that the position information 221 includes information indicating the positioning time at which positioning was performed, may be transmitted in real time, may be burst transmitted, or it is determined that the vehicle has arrived at the parking position The point that may switch burst transmission to transmission in real time, the point that start information or stop information indicating that it is a departure position or a parking position may be added, or the parking position is transmitted upon restart The point is also similar to that of the position information transmission unit 112.

When the vehicle 50b has a function of positioning the position information, not the position information measured by the sensor unit 24 but the position information measured by the vehicle 50b is transmitted to the parking lot estimation device 30 as the position information 221. You may do it. In this case, the sensor unit 24 may be omitted from the portable terminal 20.

<Functional Block of Parking Lot Estimation Device 30>
Next, functional blocks included in the parking lot estimation device 30 will be described with reference to the block diagram of FIG. 4.

As shown in FIG. 4, the parking lot estimation device 30 includes a control unit 31, a storage unit 32, a communication unit 33, a display unit 34, and an input unit 35.

The control unit 31 is configured of an arithmetic processing unit such as a microprocessor and controls each unit constituting the parking lot estimation 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 various programs such as a program for control called firmware or operating system, a program for performing information analysis processing, and various other information such as map information. Be done. In the figure, map information 321, information for each drive information database 322, and a parking lot characteristic database 323, which are information related to analysis processing of position information, are illustrated as information stored in the storage unit 32.

The map information 321 is basically the same information as the map information 123 and the map information 223 described above. However, since the parking lot estimation device 30 first updates the map information 321 when estimating the parking lot, the map information 321 includes the latest parking lot information before delivery to the in-vehicle navigation device 10 or the portable terminal 20 Will be
Like the map information 123 and the map information 223, the map information 321 may be stored in advance, or may be stored in a server device (not shown) connected to the communication network 40 as needed. It may be configured to be downloaded. Furthermore, it may be appropriately corrected according to the user's input or the like.

The per-drive information database 322 is a database constructed based on the position information 121 and the position information 221 received from each of the in-vehicle navigation device 10 and the portable terminal 20, and the identification information 122 and the identification information 222. The drive information database 322 is constructed by the drive database update unit 311 described later. The details of the per-drive information database 322 will be described later in the description of the per-drive database update unit 311. In the following description, when the position information 121 and the position information 221 are described without distinction, the reference numerals are omitted and they are called "position information". Similarly, when the identification information 122 and the identification information 222 are described without distinction, the reference numerals are omitted and called “identification information”.

The communication unit 33 has a DSP (Digital Signal Processor) or the like, and conforms to a standard such as 3G (3rd Generation) LTE (Long Term Evolution) or Wi-Fi (registered trademark) via the communication network 40. 40 realizes wireless communication with other devices via 40. The communication unit 33 is used, for example, to receive position information and identification information transmitted from each of the in-vehicle navigation device 10 and the portable terminal 20. In addition, the communication unit 33 is also used to transmit map information to, for example, the in-vehicle navigation device 10 and the portable terminal 20.
However, there is no restriction | limiting in particular in the data transmitted / received between the communication part 33 and another apparatus, You may make it transmit / receive information other than these information.

The display unit 34 is configured of 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. Examples of the information displayed by the display unit 15 include map information read from the map information 321, each information in the drive information database read from the drive information database 322, various user interfaces, and the like. Be

The input unit 35 is configured by an input device (not shown) such as a keyboard and a mouse. Based on the operation input from the input unit 16, for example, correction of the map information 321 and the drive information database 322, and processing such as selection of the in-vehicle navigation device 10 and the portable terminal 20 to be the transmission destination of the updated map information. It becomes possible. These operations are performed by, for example, a business operator managing the parking lot estimation device 30.

Next, details of the control unit 31 will be described. The control unit 31 is configured of a microprocessor having a central processing unit (CPU), a random access memory (RAM), a read only memory (ROM), and an input / output (I / O). The CPU executes each program read from the ROM or the storage unit 32, reads the information from the RAM, the ROM, and the storage unit 32 at the time of execution, and writes the information to the RAM and the storage unit 32, It exchanges signals with the communication unit 33, the display unit 34, and the input unit 35. And, in this way, the processing in the present embodiment is realized by the hardware and software (program) working together.

The control unit 31 includes, as functional blocks, a drive database update unit 311, a map management unit 312, a determination target area specification unit 313, a parking space estimation unit 314, a parking space attribution unit 315, a home parking space candidate extraction unit 316, and a home A parking lot estimation unit 317, a facility parking lot estimation unit 318, and a parking lot characteristic database updating unit 319 are provided.
The per-drive database update unit 311 is a part that constructs the per-drive information database 322 and updates the per-drive information database 322 as appropriate. An example of the data structure of the drive information database 322 will be described with reference to FIG.

As shown in FIG. 5, the drive information database 322 stores information such as identification information, start time, end time, end point latitude and end point longitude in a linked manner.
The per-drive database update unit 311 associates and stores these pieces of information in units of one drive. That is, the identification received from when the ignition switch of the vehicle 50 is turned on (starts the engine) and transmission of position information is started, and until the ignition switch is turned off (engine is stopped) and transmission of position information is ended Information and location information are stored as one unit.

Here, the “identification information” in the drive information database 322 is information for identifying the in-vehicle navigation device 10 or the portable terminal 20 that is the transmission source of the position information as described above. That is, the information is information for identifying the vehicle 50 corresponding to the in-vehicle navigation device 10 or the portable terminal 20.

The “start time” in the drive information database 322 is the time when the ignition switch of the vehicle 50 is turned on (engine is started) and transmission of position information is started. The start time is specified based on time information included in the position information and activation information indicating that the ignition switch included in the position information is turned on.
The “end time” in the drive information database 322 is the time when the ignition switch of the vehicle 50 is turned off (engine is stopped) and transmission of positional information is completed. The end time is specified based on time information included in the position information and stop information indicating that the ignition switch included in the position information is turned off.
The “end point latitude” and “end point longitude” in the drive information database 322 are position information transmitted at the time when the ignition switch of the vehicle 50 is turned off (engine stopped) and transmission of position information is completed (ie, It is specified based on the last transmitted position information).

Information other than the information illustrated in FIG. 5 may be further included in the drive information database 322. For example, all the position information received between the start and the end of the transmission of the position information may be included. These pieces of position information are position information that changes discretely in time with the movement of the vehicle 50, are information representing the movement route of the vehicle 50, and can be used for applications such as the above-described big data analysis.

The drive-based database updating unit 311 generates a new field based on the received position information and identification information each time transmission of the position information and identification information from any of the in-vehicle navigation device 10 and the portable terminal 20 is started and then ended. Then, the drive-by-drive information database 322 is updated by storing the above-mentioned information.

Next, the map management unit 312 will be described. The map management unit 312 is a part that manages map information 321 including facility information and road information in units of mesh (grid) areas divided into predetermined areas.

Management in mesh area units by the map management unit 312 will be described with reference to FIGS. 6 and 7. FIG. 6 shows a map generated based on the map information 321. As described above, the map information 321 includes information on roads and facilities. In addition, the map information 321 may include information for displaying an icon indicating a facility or the like so that the user can easily grasp the information when referring to the information.

FIG. 7 shows management by the map management unit 312 in mesh area units. As shown in FIG. 7, the map management unit 312 manages the map information 321 in units of a plurality of mesh areas 80 divided by a predetermined area. Note that, for convenience of illustration, in the figure, reference is made only to one mesh area 80 among the plurality of mesh areas.

Each of the plurality of mesh regions 80 is realized, for example, in the shape of a rectangle with 10 meters on each side. However, this is only an example, and for example, the length of each side may be different, and the shape may also be a shape other than a rectangle (for example, a hexagon). Each functional block functioning in the control unit 31 performs each process described later on the map information 321 managed by the map management unit 312 in mesh area 80 units.
In the above description with reference to FIG. 7, the mesh area 80 is described, but in the following description, the code of the mesh area 80 is omitted.

Next, the determination target area specifying unit 313 will be described. The determination target area specifying unit 313 is a part that specifies a “determination target area” which is a position to be determined as to whether or not a parking lot estimation unit 314 described later is a parking lot. The determination target area specifying unit 313 acquires all end point latitudes and end point longitudes included in the drive information database. Then, the determination target area specifying unit 313 specifies the area in which the vehicle 50 parked a plurality of times based on each of the acquired end point latitude and end point longitude. Then, the identified area is set as a determination target area. The determination target area is notified to a parking lot estimation unit 314 described later. In the present embodiment, it is determined whether or not the vehicle 50 parks a plurality of times for each mesh area described above, and when the vehicle 50 parks a plurality of times within one mesh area, the mesh area is determined Area

Next, the parking lot estimation unit 314 will be described. The parking lot estimation unit 314 is a part that estimates whether or not the determination target area notified to the determination target area identification unit 313 is a parking lot. For estimation, the parking lot estimation unit 314 determines whether a plurality of parkings in the determination target area is parking by a specific vehicle 50 or parking by an unspecified vehicle 50.

Specifically, the parking lot estimation unit 314 acquires identification information corresponding to each of a plurality of parkings in the determination target area from the drive-by-drive information database 322, and when the acquired identification information is the same, it is specific It is determined that the vehicle 50 is parked.
On the other hand, when the acquired identification information differs, it determines with it being parking by the unspecified vehicle 50. In addition, when there is a large number of pieces of identification information, it is determined that parking by an unspecified vehicle 50 is also performed when only part of the identification information is the same and most parts are different. Then, when it is determined that parking is performed by the unspecified vehicle 50, the determination target area that is the target of the determination is estimated to be the position of the parking lot.

The reason for this estimation in this embodiment will be described with reference to FIG. The upper part of FIG. 8 illustrates the case of parking by a specific vehicle 50. Further, in the lower part of FIG. 8, the case of parking by an unspecified vehicle 50 is illustrated. Although the parking positions of the respective vehicles are illustrated so as not to overlap in FIG. 8 for the sake of explanation, the parking positions of the respective vehicles parked in the same place at different times actually overlap each other.

First, referring to the upper part of FIG. 8, a plurality of vehicle a parking positions 71 a are included in the determination target area 81. This means that only the specific vehicle 50a is parked a plurality of times in the determination target area 81. In this embodiment, when a specific vehicle 50 corresponding to the same identification information is parked a plurality of times in the determination target area as described above, this place is a private parking lot, and therefore, it is used for big data analysis etc. Do not estimate it as a parking lot.

On the other hand, referring to the lower part of FIG. 8, in the determination target area 81, the vehicle a parking position 82a, the vehicle b parking position 82b,..., The vehicle g parking position 82g Parking position is included. This means that seven unspecified vehicles are parked in the determination target area 81. In this embodiment, when an unspecified vehicle 50 corresponding to different identification information is parked a plurality of times in the determination target area in this manner, it is highly likely that this place is a parking lot such as a facility. , It is estimated that it is a parking lot used for big data analysis etc.
That is, in the present embodiment, instead of estimating the parking lot based on the fact that parking is performed a plurality of times, estimation is performed based on whether or not parking is performed on an unspecified vehicle 50. That is, according to the present embodiment, it is possible to perform more detailed estimation as compared to the prior art.

The parking lot estimation unit 314 may add the position information of the determination target area estimated as the parking lot to the map information stored in the map information 321 as the parking lot position information. That is, the map information may be updated. As a result, position information of a new parking lot not included in the map information is added to the map information. In addition, when the positional information on the parking lot already estimated is contained in the map information 321, it is made not to register redundantly.

The parking lot estimation unit 314 can also add information other than the position information to the parking lot information by performing other estimations other than this.
For example, the parking lot estimation unit 314 further estimates the parking available time zone in the estimated parking lot based on the information indicating the positioning time included in the position information, and the estimated parking available time zone is parking lot information Can also be added to In this case, the parking lot estimation unit 314 determines whether parking in the estimated parking lot has temporal periodicity, based on the information indicating the positioning time. Then, when it is determined that there is temporal periodicity, the estimated available parking time zone in the parking lot is estimated based on the temporal periodicity. For example, if it is parked only at noon periodically, it is estimated to be a parking lot of a facility that is open only at noon, or if it is parked not only at daytime but also at night, a facility open for 24 hours It can be estimated that it is a parking lot of

The parking lot attribute assigning unit 315 assigns a parking lot attribute to the determination target area estimated to be a parking lot candidate by the parking lot estimation unit 314 based on the facility information included in the map information 321. For example, a facility existing at or near a location that matches the latitude and longitude (for example, the latitude and longitude of the central position of the determination target region) indicating the determination target region estimated to be a parking lot candidate by the parking lot estimation unit 314 The parking lot attribute of the determination target area estimated to be the parking lot candidate is assigned based on the facility information of For example, if this facility is facility A, a parking lot attribute that this parking lot is a parking lot of facility A is given.

Further, based on the facility information, information may be given as to what kind of facility a parking lot is. For example, information indicating a genre such as a restaurant or a retail store, or more detailed information indicating that it is a parking lot of a coffee shop or a parking lot of a convenience store may be added.

Further, in the facility information, there may be a plurality of facilities determined to be close to the latitude and longitude indicating the determination target area estimated to be the parking lot candidate. In such a case, parking lot attributes may be assigned based on the facility information of the plurality of facilities. For example, since the convenience store and the restaurant exist in the same place in the service area of the expressway, the parking lot attribute may be given based on the facility information of the plurality of facilities. By assigning parking lot attributes for complex facilities, more accurate data utilization becomes possible.
Further, in this case, a parking lot attribute based on facility information may be provided in parallel in parallel with information on how close the information is.

From the home parking lot candidate extraction unit 316, the facility parking lot estimation unit 318 performs processing on the parking lot candidates to prevent the home parking lot and the facility parking lot from being erroneously determined.
Therefore, the home parking lot candidate extraction unit 316 is a determination target area determined to be a parking lot candidate, and for each of the vehicles 50, the determination target area having the largest number of parking times in a fixed period is set as a home parking lot candidate. Extract. Specifically, the home parking lot candidate extraction unit 316 refers to the drive information information database, and extracts all of the end point latitude and the end point longitude (that is, information indicating the parking position) in a certain period for a certain identification information. Do. Then, based on all the extracted end-point latitudes and end-point longitudes, the vehicle 50 corresponding to the certain identification information extracts the determination target area parked the most as a home parking lot candidate. And this extraction process is performed about all the identification information.

The home parking lot candidate extraction unit 316 may further narrow down the extracted home parking lot candidates. For example, the home parking lot candidate extraction unit 316 sets a flag indicating that each of the extracted home parking lot candidates is a home parking lot candidate. Also, a model is generated with this flag as an objective variable. Then, based on this model, for each home parking lot candidate, the home probability may be calculated, and the home parking lot candidate whose calculated probability is less than a certain probability may be excluded from the home parking lot candidates.

The home parking area estimation unit 317 takes into consideration the parking area attribute assigned by the parking area estimation unit 314 and applies the determination target area extracted as a home parking area candidate by the home parking area candidate extraction unit 316 to a mesh area of the home parking area Estimated as For example, in the case where the home parking lot estimation unit 317 does not have a facility in the vicinity of the determination target area extracted as a home parking candidate, the parking lot attribute of the facility is not given to the determination target area, This judgment target area is estimated to be a home parking lot.

The facility parking lot estimation unit 318 is a mesh of the facility parking lot, excluding the mesh area of the home parking lot estimated by the home parking lot estimation unit 317 from the determination target area estimated by the parking lot estimation unit 314 as the parking lot. Estimated as a region. As described above, in the present embodiment, instead of estimating all the determination target areas estimated by the parking lot estimation unit 314 as the parking lot as the facility parking lot, the determination target area estimated to be the home parking lot is excluded. The area is estimated as the mesh area of the facility parking lot. Therefore, it is possible to prevent the home parking lot and the facility parking lot from being erroneously determined.
That is, according to this embodiment, it becomes possible to estimate a parking lot more appropriately than before.

The estimation result by the facility parking lot estimation unit 318 is shown in FIG. As shown in the facility parking lot estimation unit 318, the home parking lot estimation unit 317 is from the determination target area (corresponding to the home parking lot 83 and the facility parking lot 84 in the figure) estimated to be a parking lot by the parking lot estimation unit 314. An area excluding the estimated mesh area of the home parking lot (corresponding to the home parking lot 83 in the drawing) is estimated as a mesh area of the facility parking lot (in the drawing, the plant parking lot 84).

Note that, for convenience of illustration, in the drawing, only one home parking lot 83 among the plurality of home parking lots 83 is given a reference. Similarly, in the figure, only one facility parking lot 84 among the plurality of facility parking lots 84 is labeled. Further, although the home parking lot 83 and the facility parking lot 84 are described in the above description with reference to FIG. 9, in the following description, the signs of the home parking lot 83 and the facility parking lot 84 are omitted.

In the case where the mesh area estimated as the facility parking lot or the home parking lot is adjacent, the facility parking lot estimation unit 318 connects the adjacent mesh areas and is one parking lot. It is also possible to further execute the linking process, which is determined as In this case, the parking lot attribute assigned to each connected mesh area may be used as the parking lot attribute for one parking lot after connection. Further, in this case, among the plurality of mesh areas adjacent to each other, the mesh area having the largest number of times of parking may be selected as a representative. Alternatively, a mesh area having the largest number of unique users (that is, the number of identification information items corresponding to the parked vehicle 50) may be selected as a representative. Then, the latitude and longitude of the representative mesh area and the parking lot attribute may be set as the latitude and longitude of one parking lot and the parking lot attribute after connection.

The parking lot characteristic database updating unit 319 updates the parking lot characteristic database 323 based on the estimation result of the facility parking lot estimation unit 318. Here, the parking lot characteristic database 323 updated by the parking lot characteristic database updating unit 319 will be described with reference to FIG. In addition, although it is assumed that the information about a facility parking lot is stored in the parking lot characteristic database 323, the information about a home parking lot may be stored according to uses, such as big data analysis.

As illustrated, the parking lot characteristic database 323 includes information such as a parking lot representative latitude, a parking lot representative longitude, the number of parking times, the number of unique users, the number of connected meshes, a facility name, and a facility genre. These pieces of information are stored for each estimated facility parking lot.
“Parking lot representative latitude” and “Parking lot representative longitude” included in the parking lot characteristic database 323 are latitude and longitude corresponding to each facility parking lot. For example, the latitude and longitude of the central position of each facility parking lot. As described above, although the word "representative" is described on the assumption that the process of connecting the facility parking lot is performed, the process of connecting is not necessarily performed.

The “number of times of parking” included in the parking lot characteristic database 323 is the number of times of parking in each facility parking lot. The number of times may be a fixed period or may be integrated after the process according to the present embodiment is started.
The “number of unique users” included in the parking lot characteristic database 323 is the number of unique users parked in each facility parking lot. The number of times of parking and the number of unique users may be for a fixed period, or may be integrated after the process according to the present embodiment is started.

The “connected mesh number” included in the parking lot characteristic database 323 is, as described above, the number of connected meshes when the facility parking lot is connected. The number of connected meshes can be used as an index indicating the size of the facility parking lot.
The “facility name” and “facility genre” included in the parking lot characteristic database 323 are information of the facility corresponding to the facility parking lot, and are information assigned as a parking lot attribute by the parking lot attribution unit 315.
Information other than the information illustrated in FIG. 10 may be further included in the parking lot characteristic database 323.

In the present embodiment, the parking lot characteristic database 323 can be constructed based on the position information and the like of the facility parking lot appropriately estimated as described above. The information of the parking lot characteristic database 323 and the information of the drive-by-drive information database 322 can be effectively used for applications such as big data analysis.

For example, based on the information stored in these databases, it is possible to analyze time zones, seasons, days of the week, holidays, months, etc. from the parking date and time. In addition, average, variance, standard deviation, etc. can also be calculated from the parking time. It is possible to calculate the number of unique users of the parking lot, the number of parkings, and the like. By analyzing based on these pieces of information, for example, it is possible to obtain information such as a coffee shop crowded on Sunday and staying for a long time, as an analysis result, instead of an attribute such as "coffee shop".

<Operation of this embodiment>
Next, the specific contents of the process performed by the parking lot characteristic database updating unit 319 from the determination target area specifying unit 313, which is the process of the present embodiment, will be described with reference to the flowchart in FIG. It is assumed that updating of the drive-specific information database 322 by the drive-specific database updating unit 311 and management of the map information 321 by the map management unit 312, which are the premise of this processing, are performed in advance.

In step S11, the determination target area identification unit 313 extracts information from the drive information database 322. Then, based on the extracted information, a mesh area to be a determination target area is identified.

In step S12, the parking lot estimation unit 314 performs the determination on the mesh area that has become the determination target area, and if it is determined that the determination target area is parked by the unspecified vehicle 50, the determination The target area to be judged is estimated as a parking lot candidate.

In step S13, the parking lot attribution unit 315 assigns parking lot attribution to the determination target area estimated as the parking lot candidate based on the facility information included in the map information 321.
In step S14, the home parking lot candidate extraction unit 316 is a determination target area determined to be a parking lot candidate, and for each vehicle 50, the determination target area having the largest number of parking times within a fixed period is a home parking lot candidate Extract as

In step S15, the home parking lot estimation unit 317 takes into consideration the parking area attribute given by the parking lot estimation unit 314 and determines the home area to be judged as the home parking candidate by the home parking candidate extraction unit 316. Estimated as mesh area of parking lot.

In step S16, the facility parking lot estimation unit 318 does not include the mesh area of the home parking lot estimated by the home parking lot estimation unit 317 from the determination target area estimated by the parking lot estimation unit 314 as the parking lot, Estimated as mesh area of parking lot.

In step S17, the parking lot characteristic database updating unit 319 updates the parking lot characteristic database 323 based on the estimation result of the facility parking lot estimation unit 318. This processing ends.
By the operation described above, it is possible to estimate the parking lot more appropriately than in the conventional case. Also, it is possible to construct a database by appropriately estimated information. Information in these databases can be effectively used for applications such as big data analysis.

<About hardware and software>
Each of the devices included in the above navigation system can be realized by hardware, software, or a combination thereof. In addition, a navigation method performed by cooperation of the respective devices included in the above navigation system can also be realized by hardware, software or a combination thereof. Here, to be realized by software means to be realized by a computer reading and executing a program.

The programs can be stored and provided to a computer using various types of non-transitory computer readable media. Non-transitory computer readable media include tangible storage media of various types. Examples of non-transitory computer readable media include magnetic recording media (eg, flexible disks, magnetic tapes, hard disk drives), magneto-optical recording media (eg, magneto-optical disks), CD-ROM (Read Only Memory), CD- R, CD-R / W, semiconductor memory (for example, mask ROM, PROM (Programmable ROM), EPROM (Erasable PROM), flash ROM, RAM (random access memory)). Also, the programs may be supplied to the computer by various types of transitory computer readable media. Examples of temporary computer readable media include electrical signals, light signals, and electromagnetic waves. The temporary computer readable medium can provide the program to the computer via a wired communication path such as electric wire and optical fiber, or a wireless communication path.

<Modification>
The embodiment described above is a preferred embodiment of the present invention, but the scope of the present invention is not limited to the above embodiment alone, and various modifications may be made without departing from the scope of the present invention. Implementation is possible.

For example, the functional configurations of FIG. 2, FIG. 3 and FIG. 4 are merely examples, and do not limit the functional configurations of the present embodiment. That is, it is sufficient if each device is equipped with a function capable of executing a series of processes relating to the information analysis function of the present invention as a whole, and in particular, FIG. The invention is not limited to the examples shown in FIGS.

Further, as another modification, the in-vehicle navigation device 10 or the portable terminal 20 may be realized by another device having no route guidance function. That is, the route guidance function by the in-vehicle navigation device 10 or the portable terminal 20 is not an essential configuration. In this case, the parking lot estimation device 30 may further include a route guidance function, and the parking lot estimation device 30 may perform route guidance by communicating with the in-vehicle navigation device 10 or the portable terminal 20.

Furthermore, as another modification, in the above-described embodiment, it has been described that the parking lot estimation device 30 is realized by one server device or the like, but each function of the parking lot estimation device 30 is appropriately distributed to a plurality of server devices It may be a distributed processing system. In addition, each function of the parking lot estimation device 30 may be realized by using a virtual server function or the like on the cloud.

DESCRIPTION OF SYMBOLS 1 Parking lot estimation system 10 Vehicle-mounted navigation apparatus 11, 21, 31 Control part 111, 211 Route guidance part 112, 212 Position information transmission part 12, 22, 32 Storage part 121, 221 Position information 122, 222 Identification information 123, 223 Map Information 13, 23, 33 Communication unit 14, 24 Sensor unit 15, 25 Display unit 16, 26 Input unit 20 Mobile terminal 27 Short-distance communication unit 30 Parking lot estimation device 311 Database update unit for each drive 312 Map management unit 313 Determination target area Specific part 314 Parking lot estimation part 315 Parking lot attribute granting part 316 Home parking lot candidate extraction part 317 Home parking lot estimation part 318 Facility parking lot estimation part 319 Parking lot characteristic database updating part 321 Map information 322 Information for every drive 323 Parking lot Characteristic database 40 Communication network 50a, 50b vehicles

Claims (4)

A map management unit capable of managing map information including facility information and road information in mesh area units divided into predetermined areas;
A receiving unit that receives position information of a plurality of mobile units together with identification information of each mobile unit;
A determination target area specifying unit that specifies, as a determination target area, a mesh area in which the moving object parked a plurality of times based on position information of the plurality of moving objects;
It is determined based on the identification information of the moving body whether or not parking in multiple times in the determination target area is parking by an unspecified moving body, and it is determined that parking of the unspecified moving body is determined A parking lot estimation unit that estimates the target area as a parking lot candidate;
An attribute giving unit for giving a parking lot attribute to the judgment target area estimated as the parking lot candidate based on the facility information;
A home parking lot candidate extraction unit which extracts a determination target area which is determined as the parking lot candidate and which has the largest number of parkings within a predetermined period as a home parking lot candidate for each mobile object;
A home parking lot estimation unit which estimates a determination target area extracted as the home parking lot candidate as a mesh area of a home parking lot, taking into account the parking lot attribute given by the attribute giving unit;
Facility parking lot estimation which estimates the area which excluded the mesh area of the home parking lot which the above-mentioned home parking lot estimation part presumed from the judgment object area which the above-mentioned parking lot estimation part presumed to be a parking lot as a mesh area of a facility parking lot Department,
The parking lot estimation device characterized by having. The receiving unit further receives either or both of start information and stop information of the plurality of mobile units as ignition information.
The attribute giving unit further gives a parking lot attribute a statistical value based on the parking date, the stop time of the mobile identified by the ignition information, and the number of parkings of the mobile.
The parking lot estimation device according to claim 1 characterized by things. The attribute assignment unit further indicates that there is a plurality of facilities when there is a plurality of pieces of facility information about a plurality of facilities in the determination target area estimated as the parking lot candidate. Give attributes
The parking lot estimation device according to claim 1 or 2 characterized by things. It is a parking lot estimation method which a computer performs,
Map management step capable of managing the map in mesh area units divided into predetermined areas by map information including facility information and road information;
Receiving location information of a plurality of mobile units together with identification information of each mobile unit;
A determination target area specifying step of specifying, as a determination target area, a mesh area in which the mobile has parked a plurality of times based on position information of the plurality of mobiles;
It is determined based on the identification information of the moving body whether or not parking in multiple times in the determination target area is parking by an unspecified moving body, and it is determined that parking of the unspecified moving body is determined A parking lot estimation step of estimating the target area as a parking candidate;
An attribute giving step of giving a parking lot attribute to the judgment target area estimated as the parking lot candidate based on the facility information;
A home parking area candidate extraction step of extracting the judgment target area which is determined as the parking lot candidate and which has the largest number of parking times within a predetermined period as the home parking lot candidate for each mobile object;
A home parking lot estimation step of estimating a determination target area extracted as the home parking lot candidate as a mesh area of the home parking lot in consideration of the parking lot attribute given in the attribute giving step;
A facility parking area where a mesh area of a facility parking area is estimated by excluding a mesh area of a home parking area estimated in the home parking area estimation step from a determination target area estimated as a parking lot in the parking area estimation step Car park estimation step,
A parking lot estimation method characterized by comprising.

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