JP2015148703A - map creating apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a map creating apparatus capable of creating map information including road information safety and convenient for a pedestrian.SOLUTION: A map creating apparatus A includes: a measuring section 1 that measures positions at regular period of time; a storage 2 that stores a piece of map information 21 and measured positions measured by the measuring section 1 at regular period of time; and a road information addition section 31 adds a piece of road information to the map information 21 based on the measured position and the measurement time stored in the storage 2. The road information addition section 31 calculates a travel speed of the measuring section 1 on the basis of the measured position and the measurement time. When the travel speed is lower than a predetermined speed, the map creating apparatus A determines that the measuring section 1 moves along with a movement on foot, and adds a line connecting the neighboring measured positions as a pedestrian's road on the map information 21.

Description

  The present invention relates to a map creation device that creates and updates a map.

  Many portable terminals such as smartphones and mobile phones are provided with a navigation system that provides route guidance. In such a navigation system, map information is provided from a server. In order to perform accurate route guidance with the navigation system, the map information is updated when a new road is opened or a road is replaced.

  A large cost is required for updating the map information. Therefore, when updating the map information, roads with many users (for example, national roads and main highways) are often preferentially updated, and narrow roads with few users are postponed to update. There are many. In particular, map information such as roads and mountain roads through which people can pass is rarely updated (added).

  Therefore, as a method for easily adding road information with few users to the map information, a map creation method described in Japanese Patent Laid-Open No. 2003-345237 has been proposed. In this map creation method, position information is continuously measured and stored by a portable terminal equipped with GPS, and route information that is information on a route from the start to the end of movement is acquired from the position information. Then, the route information is added to the existing map information as new road information. By creating (updating) the map information in this way, it is possible to create the map information including road information with few users. Moreover, while recognizing the difference of the moving speed of a pedestrian and a motor vehicle, it assumes that a pedestrian walks the edge part of a road, and calculates the vehicle width of the road to add from a pedestrian's route information.

JP 2003-345237 A

  The map creation method described in Japanese Patent Laid-Open No. 2003-345237 is an invention for adding or changing road information that is not described in the map information. The added or changed road has information on whether or not a pedestrian has passed, but there is a road that can be used by a pedestrian or a pedestrian with respect to a road that is provided in advance. Such as whether or not it is suitable for walking. For this reason, when searching for a route during walking using a map created by the map creation method described in Japanese Patent Laid-Open No. 2003-345237, there is a possibility that a route that is convenient and safe for a pedestrian cannot be guided.

  Accordingly, an object of the present invention is to provide a map creation device that can create map information including road information that is safe and convenient for pedestrians.

  In order to achieve the above object, the present invention provides a positioning unit that measures a position at regular intervals, a storage unit that stores map information and stores a positioning position measured by the positioning unit for each positioning time, and A road information adding unit that adds road information to the map information based on the positioning position and positioning time stored in the storage unit, and the road information adding unit includes the positioning position and the positioning time. The movement speed of the positioning unit is calculated based on the above, and when the movement speed is equal to or lower than a predetermined speed, it is determined that the positioning unit is moving with walking, and a line connecting adjacent positioning positions Is provided as a pedestrian path to the map information.

  ADVANTAGE OF THE INVENTION According to this invention, the map production apparatus which can produce the map information containing the information of a road safe and convenient for a pedestrian can be provided.

It is a block diagram which shows an example of the map creation apparatus concerning this invention. It is the schematic of a positioning database. It is a flowchart which shows the procedure which produces map information with the map creation apparatus concerning this invention. It is the schematic of a movement database. It is the figure which showed on the map the record of the movement database shown in FIG. 4, and the linear data created from the record. It is a flowchart which shows the other example of the procedure of the map information preparation in the map preparation apparatus concerning this invention. It is a flowchart which shows the further another example of the procedure of the map information preparation in the map preparation apparatus concerning this invention. It is the schematic of the other example of the map creation apparatus concerning this invention. It is a block diagram which shows a part of map production apparatus shown in FIG. It is the schematic of a positioning database. It is the schematic of a movement database. It is a flowchart which shows the procedure which produces map information using the positioning information measured with the several portable terminal. It is the schematic which distributed the positioning information measured with the several portable terminal on the map.

(First embodiment)
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an example of a map creating apparatus according to the present invention. The map creating apparatus A measures the position of an arbitrary section that is moving on foot, and adds information on a road that can be moved on foot to the map information based on the measured information. As shown in FIG. 1, the map creation apparatus A according to the present invention includes a positioning unit 1, a storage unit 2, a calculation unit 3, an operation unit 4, a display unit 5, and a control unit 6.

  The positioning unit 1 measures the current location of the map creation device A. The positioning unit 1 includes a GPS receiver 11 that receives a signal from a GPS satellite. The GPS receiver 11 acquires a positioning position and a positioning time based on a signal (GPS signal) from a GPS satellite (hereinafter, information on the positioning position and the positioning time is referred to as positioning information). Examples of positioning position information include latitude, longitude, altitude, and estimation error. In addition to these pieces of information, information for specifying the position where the positioning is performed may be provided. Further, the positioning time is not included in the GPS signal, but may be added to the positioning information with reference to the time of a time measuring unit (not shown) included in the map creating apparatus A. In addition to the GPS receiver 11, the positioning unit 1 may include a gyro sensor, an acceleration sensor, a direction sensor, or the like that can be used for positioning of the position of the map creating apparatus A.

  The positioning unit 1 measures the current position periodically (every time has elapsed). That is, the positioning unit 1 receives a GPS signal by the GPS receiver 11 at regular intervals, and acquires positioning information based on the GPS signal. The positioning unit 1 sends the positioning position and the positioning time to the storage unit 3 as positioning information.

  The storage unit 2 is for storing information. For example, the storage unit 2 may include a semiconductor memory such as a ROM, a RAM, and a flash memory, and a storage device such as a hard disk, a BD, and a DVD. The storage unit 2 includes map information 21 provided in advance, a positioning database 22 that stores positioning information from the positioning unit 1, and information related to movement calculated from the positioning information (for example, moving speed, moving direction, and the like). And a moving database 23 including

  The map information 21 includes map information such as roads and buildings. The map information 21 is stored in the storage unit 2 in advance, but is not limited thereto. For example, when the map creating apparatus A includes a connection unit (not shown) for connecting to the Internet and an external device, map information is acquired (downloaded) from the Internet or the external device as needed. It may be. The map information 21 is changeable information.

  The positioning database 22 is a database in which positioning information from the positioning start to the positioning end is stored in the storage unit 2. Note that the operator may arbitrarily set the positioning start and positioning end. Further, while the map creating apparatus A is activated, positioning information is always acquired, and a new positioning may be started (reset) when a certain period of time or a certain distance of movement is achieved. . At this time, the positioning information accumulated before resetting is stored in the positioning database 22.

  FIG. 2 is a schematic diagram of a positioning database. As illustrated in FIG. 2, the positioning database 22 includes a table divided for each positioning (for example, positioning time, positioning person, etc.). The positioning database 22 includes a display portion indicating the table name 22A. Each table of the positioning database 22 includes a serial number field 22B, a positioning time field 22T, a latitude field 22N, a longitude field 22E, an altitude field 22H, and an estimation error field 22G.

  The positioning time field 22T, the latitude field 22N, the longitude field 22E, the altitude field 22H, and the estimation error field 22G are information included in the positioning information. The positioning database 22 stores positioning information in the order of positioning time, and a serial number is assigned to each positioning information. Details of how to use the positioning database 22 will be described later.

  The calculation unit 3 includes calculation circuits such as an MPU and a CPU, and the calculation unit 3 is configured to be able to transmit / receive information to / from the storage unit 2. The calculation unit 3 includes a road information addition unit 31 that performs calculation processing of positioning information in the positioning database 22 and creates road information to be added to the map information 21. Details of the road information adding unit 31 will be described later.

  The map creation device A includes an operation unit 4 that receives an operation input by a user, and a display unit 5 that displays the state of the map creation device A and the like. Although the display part 5 can mention what is provided with display apparatuses, such as a liquid crystal panel, it is not limited to this, What can perform an image display can be mentioned. Further, the operation unit 4 may be provided with a physical button, or may be provided with a touch panel that operates by touching an image displayed on the display unit 5. . The map creating apparatus A may determine the start of positioning and the end of positioning by operating the operation unit 4, or after starting the map creating apparatus A by operating the operation unit 4, continues positioning until stop processing is performed. It may be like this.

  The control unit 6 controls the operations of the positioning unit 1, the storage unit 2, the calculation unit 3, and the display unit 5, and receives operation inputs made via the operation unit 4. In the map creation apparatus A, the calculation unit 3 and the control unit 6 are described as being independent, but the calculation unit 3 and the control unit 6 may be integrally formed.

  In the map creating apparatus A, a positioning start operation is performed via the operation unit 4 at the positioning start point. When a positioning start operation is performed, a GPS signal is received from a GPS satellite via the GPS receiver 11 of the positioning unit 1, and positioning information including the latitude, longitude, altitude, estimation error, and positioning time of the positioning start point is acquired. (Positioning is performed) and sent to the storage unit 2. At this time, the positioning information is given a serial number and stored in the positioning database 22. The map creating apparatus A is moving with the movement of the operator, and the GPS receiver 11 performs positioning every time one second elapses and sends positioning information to the storage unit 2.

  Next, a procedure for creating map information using the map creating apparatus having such a configuration will be described with reference to the drawings. FIG. 3 is a flowchart showing a procedure for creating map information by the map creation device according to the present invention, FIG. 4 is a schematic diagram of the movement database, and FIG. 5 is created from the record of the movement database shown in FIG. It is the figure which showed the performed linear data on the map.

  When the map creating device A creates map information, a table for creating a map is called from the positioning database 22 (step S101). The table may be selected directly from the positioning database 22. Further, the table record may be arranged as a figure on the map and the figure may be selected.

  The calculation unit 3 determines whether or not positioning information having an estimation error of 10 m or more is included in the called table (step S102). When positioning information with an estimation error of 10 m or more is detected (Yes in step S102), positioning information with an estimation error of 10 m or more is deleted from the table (step S103). For example, in the positioning database 22 (table) shown in FIG. 2, since the estimation error of the positioning information with the serial number “4” is 10 m or more, the record with the serial number “4” is deleted from the table. Here, 10 m of the estimation error is an error threshold and is set to 10 m for convenience, but is not limited to this. Further, the error threshold may be input using the operation unit 4 or other input methods.

  When there is no positioning information with an estimation error of 10 m or more (in the case of No in step S103), using the table or deleting the positioning information with an estimation error of 10 m or more (step S102), using a table, The calculation unit 3 calculates the moving speed and moving direction of the map creating apparatus A from a plurality of positioning information (step S104). The movement information obtained by adding the movement speed and movement direction information obtained by the calculation to the positioning information is stored in the movement database 23 (step S105). The moving speed is calculated by speed. The moving direction is 0 ° (reference) in the north direction, and the clockwise angle between the moving direction and the north direction is calculated. Note that the method for calculating the movement time and the movement direction from the latitude, longitude, altitude, estimation error, and positioning time uses a known method, and thus the details are omitted.

  As shown in FIG. 4, the movement database 23 includes a speed field 23 </ b> S and a movement direction field 23 </ b> D in addition to the same fields as the positioning database 22. The serial number of the record in the movement database 23 and the serial number of the record in the positioning database 22 are associated with each other. Then, the moving speed and moving direction obtained by the calculation are stored in the moving database 23 together with the positioning information. Then, the calculation with all the positioning information is finished, and when the movement information is accumulated, the table is stored.

  In the present invention, for convenience of explanation, the positioning information in the positioning database 22 is calculated and a new moving database 23 is created. However, the table of the positioning database 22 includes a speed field and a moving direction field. After the calculation process in the calculation unit 3, the movement speed and the movement direction may be added to the corresponding field.

  The calculation unit 3 searches the stored table and determines whether or not a record having a moving speed of 3 km / h or more is included (step S106). Here, “3 km / h” in step S <b> 106 is a threshold of speed during walking, and is set to 3 km for convenience, and is not limited to this. The operator may arbitrarily input the speed threshold using the operation unit 4 or other input methods.

  When the stored table includes a record in which the moving speed exceeds 3 km / h (Yes in Step S106), the control unit 6 discards the table from the moving database 23 (Step S107) and ends the creation of the map information. . Here, the creation of the map information may be terminated while the table including the record whose moving speed exceeds 3 km / h is left in the moving database 23. By leaving the table, it is possible to provide many tables that can be used when creating map information using threshold values of different moving speeds.

  When the stored table does not include a record whose moving speed exceeds 3 km per hour (No in step S106), the road information adding unit 31 determines the positioning position adjacent on the plane from the record with the adjacent serial number of the stored table. Is created (step S108).

  Here, the linear data will be described with reference to FIG. FIG. 5 visually shows linear data for ease of explanation, and the map creation apparatus A does not create such map information and is processed inside the calculation unit 3. In FIG. 5, the positioning positions (latitude and longitude) of records included in the table of the movement database 23 are shown on a map. The positioning position of each record is indicated by a circle, and a serial number of the record is given. As shown in FIG. 5, when the records in the table of the movement database 23 are arranged on the map, they are arranged in the order of serial numbers.

  The road information adding unit 31 connects adjacent circles with straight lines and acquires the information on the lines as linear data in order to use the scattered positioning positions as a continuous trajectory. For example, the circle 1 and the circle 2 are connected by a straight line, and information on the line connecting the two points (for example, the start position of the line, the direction in which the line extends, the length, etc.) is acquired as linear data. Although the road information addition part 31 has connected the positioning position where a serial number adjoins with the straight line, it is not limited to this.

  By using the linear data, it is possible to easily determine whether or not the map information includes the moving direction of the operator (map creation apparatus A) and the information on the overlapping road. In addition, since the angle between the moving direction of the operator (map making apparatus A) and the road can be easily checked, it is possible to easily determine whether the moving direction is along the road or intersects.

  The road information adding unit 31 uses such linear data to add a pedestrian road to the map information. The procedure for adding linear data to map information is shown below. In the flowchart shown in FIG. 3, the following procedure is performed continuously after the creation of the movement database 23, but is not limited thereto, and may be performed independently of the creation of the movement database 23.

  The road information adding unit 31 determines whether or not the linear data overlaps with an existing road included in the map information (step S109). If the linear data does not overlap with an existing road (No in step S109), the road information adding unit 31 adds this linear data to the map information 21 as a road that a pedestrian can pass (step S110). If the linear data overlaps with an existing road (Yes in step S109), the road information adding unit 31 indicates that a portion where the linear data of the existing road overlaps can be passed by a pedestrian. It adds to map information (step S111).

  The road information adding unit 31 uses all the records included in the stored table to check whether or not the analysis based on linear data has been performed (step S112). When all the records are used (Yes in step S112), the road information adding unit 31 ends the creation of the map information. When all the records are not used (No in step S112), the road information adding unit 31 moves to the record of the next serial number (step S113) and returns to the creation of linear data (step S108).

  In this way, map information is created by determining whether or not positioning has been performed with walking from the positioning information measured by the positioning unit 1 and adding the information measured with walking to existing map information. be able to. Thereby, it is possible to add information on roads that can be reached on foot to the map information. Moreover, it is possible to add the information that the existing road can pass a pedestrian to the map information. By using such map information for pedestrian navigation, it is possible to guide to avoid roads that cannot be walked (for example, bypass roads and elevated parts), and lead pedestrians to the destination safely, reliably and easily. It is possible.

(Second Embodiment)
Another example of the map creating apparatus according to the present invention will be described with reference to the drawings. FIG. 6 is a flowchart showing another example of the map information creation procedure in the map creation device according to the present invention. In addition, in the map creation apparatus A of this embodiment, the parts other than the positioning unit 1 and the map information 21 are the same as those described in the first embodiment, and details other than the positioning unit 1 and the map information 21 are used. The detailed explanation is omitted.

  The map information 21 is often used for automobile road guidance (navigation), and in order to improve the quality of automobile road guidance, information on the roadway (number of lanes, increase / decrease of lanes at intersections, signals, road width, etc.) Road information that includes

  Moreover, the positioning part 1 of the map creation apparatus A of this embodiment has the same structure except that the positioning accuracy is higher than the positioning part 1 of the map creation apparatus A of the first embodiment. . Therefore, in the map creating apparatus A of the present embodiment, the errors in the latitude, longitude and altitude of the positioning information are small.

  In the map creation apparatus A provided with such map information 21 and the positioning unit 1, when positioning information is superimposed on map information, it is possible to determine whether or not the positioning position is on the roadway. . The map creation apparatus A of this embodiment creates map information using this fact. The procedure for creating map information will be described below. The procedure up to the analysis in the movement database 23 is the same as that of the map creation device A of the first embodiment. Therefore, in the following description, the procedure after the determination based on the moving speed of the records in the moving database 23 (after step S106 in FIG. 3) will be described.

  As illustrated in FIG. 6, the road information adding unit 31 extracts records having adjacent serial numbers in the table stored in the movement database 23 and creates linear data connecting the positioning positions (step S <b> 201). The road information adding unit 31 checks whether or not there is a road including a roadway overlapping with the linear data in the map information 21 (step S202). If there is no road that overlaps the linear data (No in step S202), the road information adding unit 31 checks whether or not the linear data is along the road (step S203).

  When the linear data is along the road (in the case of Yes in step S203), the road information adding unit 31 adds the linear data to the map information 21 as a sidewalk provided on the side of the adjacent road (step S204). If the linear data is not along the road (in the case of No in step S203), the road information adding unit 31 adds the linear data to the map information as a road that can be walked (step S205).

  On the other hand, when there is a roadway overlapping with the linear data (Yes in step S202), the road information adding unit 31 checks whether the linear data intersects the roadway or along the roadway (step S206). When the linear data and the roadway intersect (Yes in step S206), the road information adding unit 31 adds the linear data to the map information 21 as a sidewalk (for example, a pedestrian crossing) that can cross the roadway (step S207). . In addition, when the linear data is along the road (No in step S206), the road information adding unit 31 converts the side of the portion corresponding to the linear data of the road to the map information as a sidewalk that a pedestrian can pass. It adds (step S208).

  After adding the sidewalk to the map information in steps S204, S205, S207, and S208, the road information adding unit 31 creates linear data using all the records included in the table in the movement database 23 and performs analysis. . Since this operation is the same as steps S112 and S113 in FIG. 3, detailed description thereof is omitted.

  Here, the determination of whether the linear data and the roadway intersect or whether the linear data is along the roadway is performed as follows, for example. When the angle formed by the linear data and the direction in which the roadway extends is equal to or smaller than an angle threshold (for example, 10 °), it is determined that the linear data is along the roadway. Then, when the angle formed by the linear data and the direction in which the roadway extends exceeds the angle threshold, it is determined that the linear data intersects the roadway. However, the present invention is not limited to this, and the angle threshold is not limited to this.

  As described above, since the map creating apparatus A includes the detailed map information 21 and the positioning unit 1 capable of performing detailed positioning, the map information 21 indicates whether the existing road has a sidewalk. It is possible to add to. Furthermore, it is possible to obtain map information including information on a road where a sidewalk is provided only on one side of the roadway or a portion that can cross the roadway. By using such map information to guide pedestrians, it is possible to accurately tell which side can walk with respect to the road and where the road can be crossed. Other features are the same as in the first embodiment.

(Third embodiment)
Still another example of the map creation device according to the present invention will be described with reference to the drawings. FIG. 7 is a flowchart showing still another example of a procedure for creating map information in the map creating apparatus according to the present invention. In this embodiment, the map creation device A is the same as that of the second embodiment, and a detailed description of the map creation device A is omitted. The map information creation procedure is arranged between the step of confirming a road that intersects the linear data of the second embodiment (step S206 in FIG. 6) and the step of confirming the remainder of the analyzed records. Therefore, the procedure for creating the map information shown in FIG. 7 continues after the linear data intersecting with the road is confirmed (after Yes in step S206), and then leads to step S209.

  As shown in FIGS. 2 and 4, in the map creating apparatus A, the positioning information measured by the positioning unit 1 includes altitude information in addition to the latitude and longitude information. Therefore, when the road information adding unit 31 creates linear data connecting adjacent records in the table of the movement database 23, linear information including three-dimensional (three-dimensional) changes is made using information on latitude, longitude, and altitude. Creating data.

  As shown in FIG. 7, the road information adding unit 31 checks whether or not the linear data changes in the altitude direction (three-dimensional direction) (step S301). In the present embodiment, it is determined whether the part where the sidewalk intersects the road is a three-dimensional intersection (for example, a footbridge, equivalent to the basement). Therefore, only when the amount of change (gradient) in the altitude direction of the linear data is greater than a certain value, it is determined that the altitude direction (three-dimensional direction) has changed. Note that the amount of change may be predetermined, or may be arbitrarily set by the operator.

  If the linear data does not change in the altitude direction (No in step S301), the road information adding unit 31 adds the linear data to the map information 21 as a pedestrian crossing crossing the road (step S302). When the altitude of the linear data changes (Yes in step S301), the road information adding unit 31 checks whether or not the altitude of the linear data has increased (step S303). When the altitude of the linear data is increasing (Yes in step S303), the road information adding unit 31 adds the linear data to the map information as a pedestrian bridge for crossing the road (step S304).

  The road information adding unit 31 confirms the altitude information of the record, and determines whether or not the altitude information is the same as or substantially the same as the altitude information of the starting point of the linear data determined to be a pedestrian bridge (step S305). When the altitude information is not the same or substantially the same as the altitude information at the starting point of the linear data determined to be a pedestrian bridge (No in step S305), the confirmation of altitude information is repeated (step S306). When the altitude information is the same as or substantially the same as the altitude information at the starting point of the linear data determined to be a pedestrian bridge (Yes in step S305), the process continues to step S209 in FIG.

  When the altitude of the linear data has not increased (No in step S303), the road information adding unit 31 adds the linear data to the map information as an underpass for crossing the road (step S307). The road information adding unit 31 confirms the altitude information of the record, and determines whether or not the altitude information is the same as or substantially the same as the altitude information at the starting point of the linear data determined to be an underpass (step S308). If the altitude information is not the same or substantially the same as the altitude information at the starting point of the linear data determined to be an underground passage (No in step S308), the confirmation of altitude information is repeated (step S309). When the altitude information is the same as or substantially the same as the altitude information at the starting point of the linear data determined to be an underpass (in the case of Yes in step S307), the process continues to step S209 in FIG.

  As described above, by using the altitude information, it is possible to give the map information information that the sidewalk crossing the road crosses the roadway in three dimensions such as a pedestrian bridge and an underpass. By performing pedestrian route guidance using such map information with information on places to move three-dimensionally, roads with minimal changes in altitude or roads with the shortest distance even if there are altitude changes It is possible to create map information that can provide route guidance that closely corresponds to the user's request.

(Fourth embodiment)
Another example of the map creating apparatus according to the present invention will be described with reference to the drawings. 8 is a schematic diagram of another example of the map creation device according to the present invention, FIG. 9 is a block diagram showing a part of the map creation device shown in FIG. 8, and FIG. 10 is a schematic diagram of a positioning database. FIG. 11 is a schematic diagram of the movement database. In FIG. 9, one mobile terminal is displayed as a representative of the plurality of mobile terminals.

  As shown in FIG. 8, the map creation device B includes a server Sv and a plurality of mobile terminals Mb that can be connected to the server Sv. In the map creation device B, positioning can be performed by each of the plurality of mobile terminals Mb, and the positioning data thus positioned is sequentially transmitted to the server Sv. As the portable terminal, a device having a GPS receiver 11 and configured to exchange information with the server Sv via a wireless line can be used.

  As illustrated in FIG. 9, the mobile terminal Mb of the map creation device B includes a positioning unit 1, a storage unit 12, a transmission / reception unit 13, a control unit 14, an operation unit 4, and a display unit 5. . The positioning unit 1, the operation unit 4, and the display unit 5 have the same configuration as the positioning unit of the map creation device A. The transmission / reception unit 13 exchanges information via a wireless communication network. The storage unit 12 is a memory for storing the positioning information measured by the positioning unit 1 temporarily or for a certain period. The control unit 14 controls the operation of the mobile terminal Mb.

  In the portable terminal Mb, the transmission / reception unit 13 is used as a positioning position, positioning time, and positioning information measured using the positioning unit 1 (GPS receiver 11), and sent to the server Sv using a wireless line. Alternatively, the positioning information may be stored in the storage unit 12 and then transmitted to the server Sv via the transmission / reception unit 13. For example, the positioning information measured while the wireless line is not connected can be temporarily stored in the storage unit 12, and the accumulated positioning information can be transmitted when the wireless line is restored.

  As shown in FIG. 9, the server Sv performs arithmetic processing on the map information 21, the positioning database 24, the movement database 25, the storage unit 2 in which the sidewalk database 26 is stored, the control unit 6, and positioning information (database records). And a communication unit 7 that performs communication with the mobile terminal Mb via a wireless line. The storage unit 2, the calculation unit 3, and the control unit 6 have the same configuration as the map creation device A.

  The operation of the map creation device B will be described. In the map information operating device B, the positioning database 24 stores positioning information transmitted from a plurality of mobile terminals Mb. Therefore, as shown in FIG. 10, the positioning database 24 is an ID that stores a number (ID number) for identifying the portable terminal Mb in addition to the same field as the field included in the positioning database 22 of the map creation device A. A field 24I is provided. In the positioning database 24, positioning information measured by a plurality of mobile terminals Mb is stored.

  The road information adding unit 31 of the server Sv distributes the records accumulated in the positioning database 24 for each ID number, calculates the moving speed and moving direction for each portable terminal Mb, and calculates a table classified by the portable terminal Mb. The prepared movement database 25 is created. As shown in FIG. 11, when the movement database 25 is created, the serial numbers used in the positioning database 24 are used as they are, but the serial numbers may be reassigned. The road information adding unit 31 adds the map information 21 based on the table of the movement database 25 classified by the mobile terminal Mb. The procedure for adding the map information 21 uses any of the procedures described above.

  Thus, since it becomes the structure which acquires the positioning information from several mobile terminal Mb, and adds map information based on the positioning information, adding the road where a pedestrian can pass can be added efficiently. Is possible.

  When using a plurality of portable terminals Mb, positioning may be performed at a location close to another portable terminal Mb. In such a case, the road information adding unit 31 may add the sidewalk information using the table of any one mobile terminal Mb in the movement database 25.

  Alternatively, a sidewalk may be added using all the tables corresponding to each of the plurality of mobile terminals Mb in the movement database 25. An example of a procedure for creating map information based on positioning of a plurality of mobile terminals Mb will be described with reference to the drawings. FIG. 12 is a flowchart showing a procedure for creating map information using positioning information measured by a plurality of portable terminals.

  As shown in FIG. 12, the road information adding unit 31 records a positioning position (hereinafter referred to as a target) of a predetermined table of the movement database 25 (here, a table relating to the mobile terminal Mb with the ID number “B” shown in FIG. 11). (Referred to as a positioning position) (step S401). The road information adding unit 31 searches the map information and checks whether or not there is a positioning position that is close to the target positioning position (hereinafter simply referred to as a positioning position that is close) (step S402).

  If there is a positioning position that is close to the target positioning position (Yes in step S402), the road information adding unit 31 extracts information on the positioning position that is close to the target positioning position (step S403).

  The road information adding unit 31 determines whether or not the target measurement position is farther from the center of the road (the side part of the roadway when there is roadway information) than the measurement position that is close (step S404). If the target positioning position is farther (Yes in step S404), the road information adding unit 31 adopts the target positioning position as a record used to create linear data (step S405). If the target positioning position is closer (No in step S404), the road information adding unit 31 adopts the adjacent positioning position as a record used for creating linear data (step S406).

  If there is no positioning position close to the target positioning position (No in step S402), the target positioning position is adopted as a record used for creating linear data (step S405).

  Then, the road information adding unit 31 performs the above-described analysis on the positioning positions of all the records included in the table with the ID number “B”. After detecting the adjacent records in all the records, a sidewalk database 26 combining the records adopted so far is created in the movement database 25, and linear data is created based on the table. The subsequent steps are the same as those in the second embodiment and the third embodiment described above, and detailed description thereof is omitted.

  From the next time, when the process of adding a sidewalk is performed using a table having positioning information with overlapping positioning positions, the newly created sidewalk database 26 may be preferentially searched. By doing in this way, since the sidewalk information is created based on the positioning information by the plurality of mobile terminals Mb or the positioning information having different positioning times, the accuracy of the sidewalk included in the map information is increased.

  In addition, since the determination of the above-mentioned sidewalk presupposes that map information has the information of the side part of a roadway, the positioning position far from a roadway is employ | adopted. If there is no information on the side of the roadway, the sidewalk between the sidewalk formed by linear data connecting the points farthest from the center of the road and the sidewalk formed by linear data connecting the nearest points May be recognized.

  Such an operation will be exemplarily described with reference to the drawings. FIG. 13 is a schematic diagram in which positioning information measured by a plurality of mobile terminals is distributed on a map. FIG. 13 shows a sidewalk based on the table of the mobile database 25 of the mobile terminal Mb with ID number “B” in a state where the information on the sidewalk is created based on the positioning information of the mobile terminal Mb with ID number “A”. It is a case of adding.

  FIG. 13 shows the positioning positions of the records included in the table of the mobile database 25 of the mobile terminal Mb with the ID number “A” with a circle on the map, and is included in the table of the mobile database 25 of the mobile terminal Mb with the ID number “B”. The position of the recorded record is indicated by a triangle on the map. The positioning position of the mobile terminal Mb with the ID number “A” is a combination of the ID number and the serial number. For example, the positioning position with the ID number “A” and the serial number “1” is a circle A-1. Show.

  As shown in FIG. 13, the positioning position of triangle B-1 (record with serial number 1 in the table with ID number “B”) is circle A-1 (record with serial number 1 in the table with ID number “A”). It is close to the positioning position indicated by. Therefore, the road information adding unit 31 compares the triangle B-1 and the circle A-1, and adopts the positioning position farther from the center (or roadway) of the road. Here, the circle A-1 is adopted as the positioning position in the periphery. Next, the triangle B-2 is analyzed.

  Thus, after analyzing up to the triangle B-5, linear data is created using the points (records) selected by the analysis. Since there is no positioning information adjacent to the triangle B-4, the triangle B-4 is adopted as it is without comparison. A-6 to A-8 are employed as they are because there is no corresponding record in the table of ID number “B”. That is, in the example illustrated in FIG. 13, the road information creation unit 31 includes each of A-1, B-2, B-3, B-4, B-5, A-6, A-7, and A-8. Linear data created based on a table combining records is added to the map information as a sidewalk.

  In this embodiment, the table with the ID number “A” is described as an existing sidewalk. However, when the sidewalk database 26 is already provided, the table may be compared with each record in the sidewalk database 26. Good.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to this content. The embodiments of the present invention can be variously modified without departing from the spirit of the invention.

A, B Map creation device 1 Positioning unit 11 GPS receiver 12 Storage unit 13 Transmission / reception unit 14 Control unit 2 Storage unit 21 Map information 22, 24 Positioning database 23, 25 Movement database 26 Sidewalk table 3 Calculation unit 31 Road information addition unit 4 Operation Part 5 Display part 6 Control part Sv Server Mb Portable terminal

Claims (5)

A positioning unit that measures the position at regular intervals;
A storage unit that stores map information and stores a positioning position measured by the positioning unit for each positioning time;
A road information adding unit for adding road information to the map information based on the positioning position and positioning time stored in the storage unit;
The road information adding unit calculates a moving speed of the positioning unit based on the positioning position and the positioning time, and when the moving speed is equal to or lower than a predetermined speed, the positioning unit is moved along with walking. A map creation device, characterized in that it determines that it is moving and adds a line connecting adjacent positioning positions to the map information as a pedestrian path. The map information includes roadway information as road information,
The road information adding unit determines whether a line connecting the adjacent positioning positions is along or intersects with an existing road included in the map information, and is along the existing road and adjacent to the road When the line connecting the positioning positions is outside the roadway of the existing road, the line connecting the adjacent positioning positions is added to the map information as a pedestrian road arranged on the side of the roadway. 2. The map creation device according to claim 1, wherein when intersecting with the existing road, a line connecting the adjacent positioning positions is added to the map information as a pedestrian road that can cross the road. The positioning position measured by the positioning unit includes height information and the road information addition unit creates a line connecting the adjacent positioning positions so as to change three-dimensionally,
The said road information addition part adds the three-dimensional information of the said road for pedestrians to the said map information, when there exists a three-dimensional change in the line which connected the said adjacent positioning position which changes. Item 3. The map creation device according to any one of items 2 to 3. A plurality of portable terminals including a transmitter that transmits the positioning position measured by the positioning unit and the positioning unit together with a positioning time;
A server including a receiving unit that receives information from the mobile terminal, the storage unit, and the road information adding unit;
The map creation device according to any one of claims 1 to 3, wherein the road information adding unit adds the pedestrian road to the map information based on positioning positions from a plurality of the mobile terminals.   When the positioning position measured by the portable terminal is transmitted, if there is an existing positioning position close to the transmitted positioning position in the map information, the road information adding unit is configured to transmit the transmitted positioning position. The map creation device according to claim 4, wherein a position is compared with the existing positioning position, a positioning position away from the center of the road is adopted, and a pedestrian road is updated.

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