JP5784938B2 - Navigation device - Google Patents

Description

  The present invention relates to a navigation device that guides a route, and more particularly to a technology for searching a guide route.

  2. Description of the Related Art Conventionally, a vehicle-mounted navigation device that searches for a guidance route to a destination and guides the route of the vehicle according to the guidance route to guide the route is known. VICS (Registered Trademark: Trademark) is provided in advance with map data used for route search having restriction information related to various kinds of traffic restrictions set on the road, such as “one-way traffic restrictions” and “time zone traffic restrictions”. There is also known a navigation device that receives VICS (Vehicle Information and Communication System) data, acquires the restriction information in real time, and searches for a guide route in consideration of these traffic restrictions (see, for example, Patent Document 1). .

  By the way, there are roads in which only large vehicles such as large lorries (trucks) and buses are restricted due to height restriction regulations and weight restriction regulations. Therefore, conventionally, in order to search for an appropriate guide route depending on whether or not the vehicle is a large vehicle, there is a technology for searching for a route by providing map data with restriction information for a large vehicle such as a road width, a height limit, and a weight limit. It has been proposed (see, for example, Patent Document 2 and Patent Document 3).

JP 2006-84384 A JP-A-8-278157 Japanese Patent Laid-Open No. 11-271078

However, when changing the specifications of an existing navigation device that is searching for a route using map data that does not have restriction information for large vehicles for large vehicles, the techniques disclosed in Patent Documents 2 and 3 In order to include the regulatory information in the map data, it is necessary to completely edit the map data. In addition to this, it is also necessary to change the route search program so that the existing navigation device performs the route search in consideration of the restriction information for large vehicles.
As described above, in the conventional technology, there is a problem that when the specification of an existing navigation device is changed so as to realize a route search reflecting the regulation information of a large vehicle, the change is very large.

  On the other hand, since the regulation information for each vehicle is included in the VICS data, an appropriate route search for a large vehicle can be performed by performing a route search based on the regulation information of the VICS data. However, there is a problem that the VICS data is not provided by all routes and cannot be practically used.

  These problems are not limited to traffic restrictions for large vehicles, but are common problems that arise when the specifications are changed to newly reflect predetermined traffic restrictions in the route search.

  The present invention has been made in view of the above-described circumstances, and provides a navigation device that can easily realize a route search reflecting the predetermined traffic restriction even when the map data does not have the restriction information regarding the predetermined traffic restriction. The purpose is to provide.

To achieve the above object, the present invention provides receiving means for receiving transmission data including real-time restriction information relating to road traffic restrictions, map storage means for storing map data of a map including roads, and the transmission data. And a search execution means for searching for a guide route after excluding a road whose traffic is restricted based on the map data , and a predetermined process corresponding to the processing by the search execution means. In the navigation device having shaping means for shaping into a data format, the map includes predetermined restriction data associating a road on which a predetermined traffic restriction for a large vehicle is set with the content of the predetermined traffic restriction. comprising a predetermined restriction data storage means for storing in advance independently of the data, the predetermined restriction data, generated by the analogous transmission data data format Is stored in the predetermined restriction data storage means, input to the shaping means as data of a new delivery form of the transmission data, the search execution unit, the which is shaped into the predetermined data format by the formatting means A guide route is searched after a road whose traffic is restricted is excluded from a route search target based on predetermined restriction data.

  In the navigation apparatus according to the present invention, the search execution unit may be configured to input the predetermined restriction data for a road within a predetermined range centered on the current position to search the guide route, and the current position is a predetermined distance. Each time the vehicle moves, the predetermined restriction data is input for the road in the predetermined range centered on the current position after the movement, and the guide route is searched again.

  Further, the present invention provides the navigation apparatus, wherein the search execution means re-searches the guide route only when a road having the predetermined traffic restriction is newly included in the predetermined range after the movement. It is characterized by doing.

  Further, the present invention provides the navigation device, wherein each of the roads for which the traffic regulation is set displays a map with the content of the traffic regulation being identifiable as to whether the traffic regulation is based on the predetermined regulation data. It is characterized by having a display means.

  According to the present invention, in the navigation device, the road with the traffic restriction set is displayed with an image corresponding to the content of the traffic restriction, and when the image is selected, the content of the traffic restriction is displayed. It is characterized by displaying.

  According to the present invention, in the navigation device described above, when the distance to the road where the traffic restriction is set is equal to or less than a predetermined distance, a voice related to the traffic restriction is output.

According to the present invention, when the search execution means processes the restriction information of the transmission data with respect to the search execution means for searching the guide route except for the road restricted based on the restriction information of the transmission data and the map data. A configuration in which predetermined restriction data indicating a road for which predetermined traffic restrictions are set is shaped and input in a data format common to the above data format, and a guide route excluding roads for which predetermined traffic restrictions are set is searched. It was.
With this configuration, it is not necessary to include predetermined traffic restrictions in advance in the map data, and the search execution unit may process the predetermined restriction data indicating the predetermined traffic restrictions in the same manner as the restriction information of the transmission data. It is possible to search for a route reflecting predetermined traffic restrictions while suppressing changes to the data and the search execution means.

It is a block diagram which shows the functional structure of the navigation apparatus which concerns on embodiment of this invention. It is a figure which shows an example of the content of vehicle information and a setting item. It is a schematic diagram of large vehicle regulation data. It is a schematic diagram of a regulation data file. It is a block diagram which shows the functional structure of a route search part. It is a schematic diagram of unified intermediate format data and restriction information for route search. It is a flowchart of the search process of a guidance route. It is explanatory drawing of the re-search of a guidance route. It is a flowchart of the re-search process of a guidance route. It is operation | movement explanatory drawing of the re-search of a guidance route. It is explanatory drawing of the pop-up display at the time of the icon attached | subjected on the map. It is a flowchart of a voice output process of traffic regulation.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram showing a functional configuration of the navigation device 1 according to the present embodiment. The navigation device 1 is an in-vehicle device that is mounted on a vehicle and includes a route search function that searches for a guide route to a destination and a route guide function that guides the route by guiding the progress of the vehicle according to the guide route. In the following description, it is assumed that the navigation device 1 is mounted on a large vehicle.
In the present embodiment, the large vehicle is a vehicle classified as a large vehicle or a specific medium-sized vehicle based on the road traffic law in Japan, and is out of the vehicle length, height, and total vehicle weight. At least one refers to a vehicle that is distinguished from the ordinary vehicle by exceeding the standard of the ordinary vehicle stipulated in the Road Traffic Law. For example, a large truck (truck), a bus, and the like can be given as specific examples.

As shown in FIG. 1, the navigation device 1 includes a control unit 10, a position detection unit 12, an operation unit 14, a storage unit 16, a VICS data reception unit 18, and a display unit 20.
The control unit 10 centrally controls each unit and includes a microcomputer, a ROM, a RAM, and the like. In addition, the control unit 10 executes the control program 11 as a route search unit 30 that searches for a guide route from the current position to the destination, and a route guide unit 32 that guides the progress of the vehicle according to the guide route. It functions as a data access unit 33 that functions and accesses data in the storage unit 16 as necessary.
The position detection unit 12 detects the current position and outputs it to the control unit 10, and includes a GPS, a gyroscope, and the like.
The operation unit 14 receives a user instruction input or information input and outputs it to the control unit 10. The operation unit 14 includes a touch panel, operation buttons, a remote controller, and the like, and is used for destination setting and vehicle information setting described later. .

The storage unit 16 stores various data used for route search and route guidance, and includes a map data storage unit 35, a large vehicle regulation data storage unit 36, and a vehicle information setting storage unit 38. .
The map data storage unit 35 stores map data including road data necessary for route search and route guidance. The road data includes nodes corresponding to both ends of the road, intersections in the middle of the road, and links that are road portions between the nodes. Each node and link includes a road type and a link cost (travel distance and travel distance). Various data such as required time) are associated in advance as road information.

The map data is divided and stored based on a regional mesh defined by JIS (Japanese Industrial Standards). A regional mesh is a network that divides a region into a grid with a fixed meridian and latitude line. A primary mesh and a primary mesh are divided into eight equal parts in length and breadth in a range divided by a longitude difference of 1 degree and a latitude difference of 40 minutes. The secondary mesh and the tertiary mesh obtained by dividing the secondary mesh into 10 parts vertically and horizontally are standardized. In this embodiment, since VICS data Dv, which will be described later, is provided based on a secondary mesh, map data of at least a secondary mesh is used in accordance with this. Of course, map data such as a primary mesh, a tertiary mesh, and a half area mesh may be used for navigation in addition to the secondary mesh used in accordance with the VICS data Dv.
In addition to this, the map data includes background data such as buildings, transportation facilities, and rivers, and display icon data as display data.

  The large vehicle restriction data storage unit 36 stores in advance large vehicle restriction data Da (see FIG. 3), which is predetermined restriction data. The large vehicle restriction data Da is a large vehicle restriction information indicating the contents of the road restriction on a road link (more precisely, a VICS link described later) on which a road restriction (predetermined traffic restriction) for a large vehicle is set. Is associated with each other. The contents of traffic regulations for large vehicles include: "Large vehicle traffic regulation", "Total vehicle weight regulation", "Vehicle height regulation", "Vehicle width regulation", "Vehicle length regulation", "Dangerous goods loaded vehicle" For example, there are restrictions on traffic closure. “Large vehicle traffic restriction” regulates the passage of vehicles classified as “large vehicles” by law. “Vehicle Gross Weight Regulation”, “Vehicle Height Regulation”, “Vehicle Width Regulation”, and “Vehicle Length Regulation” are respectively the total vehicle weight (total weight of the vehicle including the load), high Specify the height (height of the vehicle including the load), the width (the width of the vehicle including the load), and the length (the length of the vehicle including the load). regulate. “Dangerous goods loaded vehicle traffic restriction” regulates the passage of vehicles loaded with dangerous goods. When the vehicle on which the device is mounted falls under any of the restrictions, the corresponding link (road) cannot pass.

  The vehicle information setting storage unit 38 stores vehicle information Ds of a vehicle (hereinafter referred to as “own vehicle”) on which the own device is mounted. The vehicle information Ds is used to determine whether or not the own vehicle falls under each of the traffic regulations of the large vehicle regulation information. The contents Dt of the setting item of the vehicle information Ds is the traffic regulation information. An example of the vehicle information Ds and the contents Dt is provided in advance with reference to the object, and is shown in FIG. In the present embodiment, the vehicle information Ds includes a flag indicating whether or not the vehicle is a large vehicle, the vehicle weight, height, width, length, and presence / absence of dangerous material loading. Whether the vehicle is a large vehicle is determined in accordance with the laws and regulations of the country (Japanese road traffic law in this embodiment). According to the Japanese Road Traffic Law, “medium-sized vehicles” include “specified medium-sized vehicles” that have a large total vehicle weight or maximum loading capacity, and these “specified medium-sized vehicles” pass as “large-sized vehicles”. Since it is necessary to regulate, the navigation device 1 treats the “specific medium-sized vehicle” as a large vehicle.

  The VICS data receiving unit 18 receives the VICS data Dv as transmission data transmitted from the VICS center 5 and outputs it to the control unit 10. The VICS data Dv is transmitted through various distribution forms such as beacons provided at regular intervals along the road and FM multiplex broadcasting. The VICS data receiving unit 18 receives at least one distribution form of the VICS data Dv. Receive. The VICS data Dv includes the traffic information of the area where the vehicle is traveling, and the traffic information of the traveling area can be acquired in real time by receiving the VICS data Dv.

In VICS, traffic information within a range of a predetermined mesh (for example, 9 meshes) in units of a secondary mesh is distributed by VICS data Dv, and links included in the ranges of each secondary mesh (hereinafter, “ As shown in FIG. 3, a unique link number is assigned to each component link and managed as VICS link data Db.
Further, the VICS data Dv is converted into data by associating various road information with the link number of the VICS link, and one of the road information includes restriction information regarding road traffic regulation. Like the large vehicle restriction information, this restriction information includes “Large vehicle traffic restriction”, “Total vehicle weight restriction”, “Vehicle height restriction”, “Vehicle width restriction”, “Vehicle length restriction”, “ Various traffic regulations such as “Dangerous goods loaded vehicle traffic regulation” are shown, so that the navigation device 1 can identify the traffic regulation set on the road in the travel area in real time.

The large vehicle regulation data Da described above is generated in accordance with the VICS data Dv. That is, the large vehicle restriction data Da is converted into data by associating large vehicle restriction information indicating the restriction contents with a VICS link (that is, a road) where the passage of the large vehicle is restricted for each range of the secondary mesh unit. Has been.
Specifically, as shown in FIG. 3, the generation procedure is similar to the VICS data Dv. First, for each range of the secondary mesh unit of the map data, a link (secondary mesh) included in the secondary mesh is used. The large vehicle restriction information element data Dc is created by collecting the links (roads) in which the large vehicle restriction information is set among the roads of the map data in the mesh range. Next, for the same secondary mesh, the large vehicle restriction information element data Dc and the VICS link data Db are compared to extract the VICS link of the VICS link data Db to which the large vehicle restriction information is attached. In the example of FIG. 3, the large vehicle restriction data Da is generated by associating the large vehicle restriction information with the link number of the VICS link.

As shown in FIG. 4, the large vehicle regulation data Da generated in units of the secondary mesh is converted into data as aggregate data Dd in the primary mesh range, and further, the aggregate data Dd is collected for the whole country to form one regulation. A data file De is configured, and the restriction data file De is stored in the large vehicle restriction data storage unit 36.
As described above, the large vehicle restriction data Da is collected as one restriction data file De, so that the handling becomes easy, and the file management becomes easy because it can be easily incorporated under the directory structure of the map data. For example, it can be recorded and distributed together on a recording medium such as a DVD in a form incorporated in map data. On the other hand, since the large vehicle restriction data Da is data independent of the map data, it is easy to update only the large vehicle restriction data Da.

  Returning to FIG. 1, the display unit 20 displays the searched guidance route on a map, and further guides the route by displaying the current position. For example, the display unit 20 includes a flat panel display. The display unit 20 also displays various setting screens and operation menu screens.

Next, in detail about each part of the control part 10, the data access part 33 accesses the memory | storage part 16 according to the request | requirement of the route search part 30 and the route guidance part 32, reads map data and the large vehicle regulation data Da, These are output to the requesting route searching unit 30 and the route guiding unit 32.
Here, the large vehicle restriction data Da can be read together when the data access unit 33 reads map data. However, in the navigation device 1, in addition to route search and route guidance, there are many existing processes that are used by accessing the map data. Therefore, when the large vehicle regulation data Da is read together with the map data, the existing process is performed. The impact on process changes and access performance increases.
Therefore, in the present embodiment, the data access unit 33 accesses and reads the large vehicle regulation data Da independently of the control task (thread) that accesses the map data.

Specifically, the following three situations are assumed in situations where it is necessary to access the large vehicle regulation data Da. That is, first, when a route search reflecting the large vehicle restriction data Da is performed, secondly, when a traffic restriction for a large vehicle is displayed on a map of the surrounding area displayed at the start of route guidance, thirdly, When the map display range changes as the vehicle progresses, it is time to newly display traffic restrictions for large vehicles on the changed map.
Therefore, the control unit 10 generates a control task for accessing the large vehicle regulation data Da at the time of route search, at the start of route guidance (at the start of navigation), and at the time of change of the display map, and the data access unit 33 performs control. The large vehicle regulation data Da is accessed and read based on the task. Thereby, it is not necessary to change the existing process, and the access frequency to the large vehicle regulation data Da can be suppressed.

FIG. 5 is a diagram illustrating a functional configuration of the route search unit 30.
The route search unit 30 searches for a guide route from the current position to the destination based on the road data of the map data, the VICS data Dv, and the large vehicle regulation data Da. The VICS data analysis unit 40, And a search execution unit 42.
The VICS data analysis unit 40 is based on the VICS data Dv received by the VICS data receiving unit 18 and the large vehicle regulation data Da, and route search restriction information indicating a road (VICS link) on which the vehicle is restricted. 50 is generated and output to the search execution unit 42, and includes a data shaping unit 44 and an analysis conversion unit 46.

The data shaping unit 44 shapes the VICS data Dv provided in various distribution forms such as FM multiplex broadcasting and beacons into the unified intermediate format data 52 and outputs it to the analysis conversion unit 46. The unified intermediate format data 52 is a data format commonly used in various apparatuses that process the VICS data Dv when searching for a guide route based on the restriction information included in the VICS data Dv. As shown in FIG. 4, the page management header 54, which is common header information, the secondary mesh ID 55 for identifying the secondary mesh to be distributed, the identification information 56, and the information block 58 partitioned by the subheader are included.
The identification information 56 indicates the information provider, and identifies the distribution form of the VICS data Dv and the large vehicle regulation data Da.
In the information block 58, a VICS link in which traffic regulation is set among the VICS links included in the secondary mesh and regulation information indicating the content of the traffic regulation are described.
The unified intermediate format data 52 shown in FIG. 6 shows data in a state where the restriction information is converted according to the vehicle information of the own vehicle by data analysis of the analysis conversion unit 46 described later.

Here, since the large vehicle regulation data Da is generated according to the VICS data Dv, the distribution form of the VICS data Dv is substantially increased. Therefore, when the large vehicle regulation data Da is input to the data shaping unit 44, it is shaped into the unified intermediate format data 52 and output to the analysis conversion unit 46 in the same manner as when the VICS data Dv is input.
As a result, the analysis conversion unit 46 and the search execution unit 42 in the subsequent stage use the conventional processing for the VICS data Dv regardless of whether the data originates from the VICS data Dv or the large vehicle regulation data Da. Da can be processed, and changes in the program for the analysis conversion unit 46 and the search execution unit 42 can be minimized.

Based on the unified intermediate format data 52 and the vehicle information, the analysis conversion unit 46 generates route search restriction information 50 in which a VICS link whose traffic restriction on the own vehicle is “no traffic” is extracted, and a search execution unit 42. Output to.
In other words, when the analysis conversion unit 46 receives the unified intermediate format data 52, the analysis conversion unit 46 transmits the own vehicle for each traffic restriction (eg, “total vehicle weight restriction”, “vehicle height restriction”, etc.) indicated in the restriction information of the information block 58. Is subject to regulation based on the vehicle information, and if so, the regulation information is converted to “no traffic” to generate conversion regulation information. Next, the analysis conversion unit 46 generates the route search restriction information 50 by extracting the VICS link in which the restriction information is converted to “passage” from the conversion restriction information, and outputs it to the search execution unit 42. The analysis conversion unit 46 also outputs the route search restriction information 50 to the route guidance unit 32, and is referred to when the route guidance unit 32 displays a road on which the vehicle is closed on the map. The

  Since the analysis conversion unit 46 analyzes and converts the unified intermediate format data 52 as a position where the large vehicle restriction data Da of the large vehicle restriction data Da is newly added as the traffic restriction provided through the VICS data Dv, In the case of the VICS, even if there are a plurality of traffic regulations in the region, even if the traffic regulation based on the large vehicle regulation data Da and the traffic regulation based on the VICS data Dv exist in the same region, the large vehicle regulation data All the traffic restrictions including the traffic restrictions of Da (“traffic ban”) are output to the search execution unit 42 as the route search restriction information 50 and are reflected in the search for the guidance route.

The route search restriction information 50 is generated for each unified intermediate format data 52. Each of the route search restriction information 50 includes the secondary mesh ID 55 and the identification information 56 included in the unified intermediate format data 52. In addition, an information generation time 59 indicating the time (year / month / day / hour / minute / second) at which the route search restriction information 50 is generated is recorded. The identification information 56 and the information generation time 59 specify when the route search restriction information 50 is generated based on the VICS data Dv or the large vehicle restriction data Da.
As the information generation time 59, the reception time of the VICS data Dv can also be used. When the reception time is used as the information generation time 59, the production date of the large vehicle restriction data Da or the information generation time 59 is used as the large vehicle restriction data Da.

  The search execution unit 42, based on the road data of the map data and the route search restriction information 50, eliminates the “closed” VICS link and minimizes the sum of the link costs from the current point to the destination. The guide route is searched and output to the display unit 20.

The route guide unit 32 guides the travel route on the map of the display unit 20 by superimposing the current position and traveling direction of the host vehicle on the guide route searched by the route search unit 30 on the map.
Further, when displaying a map around the travel area, the route guidance unit 32, based on the route search restriction information 50 and the unified intermediate format data 52, the road on which the vehicle is “not closed” In addition, a road with another traffic restriction set is displayed with a different icon (image) for each content of the traffic restriction, thereby notifying the user of the content of the traffic restriction. Further, in the case where the route guidance unit 32 is attached with an icon of “no traffic”, based on the identification information 56 of the route search restriction information 50, as shown in FIG. Different icons 60A and 60B are displayed for each vehicle regulation data Da. Thus, the user can identify whether the road “block” is based on the large vehicle regulation data Da or the distribution form of the VICS data Dv.

The route guidance unit 32 displays each icon on the map when a plurality of traffic regulations are provided from each of the distribution forms of the plurality of VICS data Dv and the large vehicle regulation data Da. When traffic restrictions based on a plurality of VICS data Dv are provided for the same road (starting point), the time when the information is provided is the latest based on the information generation time 59 and the reception time of the VICS data Dv. By displaying an icon corresponding to the traffic regulation, the user is always notified of the latest traffic regulation information.
Further, when the traffic regulation based on the VICS data Dv and the traffic regulation based on the large vehicle regulation data Da are provided for the same road (starting point), the traffic regulation based on the large vehicle regulation data Da is always “ Therefore, the icon 60B of the traffic regulation based on the large vehicle regulation data Da (that is, “no traffic”) is always displayed. At this time, the traffic regulation icon based on the VICS data Dv is displayed so as to be visible under the “no-go” icon 60B based on the large vehicle regulation data Da, so that the user can use the VICS data Dv to perform traffic regulation information. You may be able to understand that is provided.

Next, the operation of the navigation device 1 will be described.
FIG. 7 is a flowchart of route search processing.
When the destination is set and the route search is instructed by the operation of the operation unit 14 (step S1), the route search unit 30 acquires the current position of the host vehicle from the position detection unit 12 (step S2).
Next, the route search unit 30 performs a process of identifying a road that is restricted for large vehicles based on the large vehicle restriction data Da. At this time, by reading the large vehicle restriction data Da for all roads that can be assumed as a guide route between the current position and the destination, a travel route search that completely reflects the traffic restriction for these roads is realized. However, if the large vehicle restriction data Da is read for all possible guide routes, the processing becomes enormous and the processing time required for the route search becomes long.

  Therefore, in this embodiment, as shown in FIG. 8 (A), a large vehicle only in a range R of a predetermined mesh (9 mesh in the illustrated example) in units of secondary mesh M around the current position O of the host vehicle. The restriction data Da is read, and a route search reflecting the traffic restriction of the large vehicle restriction data Da is performed. At this time, it is desirable that the mesh portion (range R) for reading the large vehicle regulation data Da is matched with the mesh portion (region range) of traffic information provided by one VICS data Dv.

  Returning to FIG. 7, the route search unit 30 accesses the large vehicle restriction data storage unit 36 through the data access unit 33, and determines whether or not there is the large vehicle restriction data Da for the predetermined range R centering on the current position O. Determine (step S3). When the corresponding large vehicle restriction data Da exists (step S3: Yes), the route search unit 30 reads the corresponding large vehicle restriction data Da through the data access unit 33 (step S4), and the passage of the large vehicle restriction data Da. When the restriction matches the vehicle information Ds stored in the vehicle information setting storage unit 38 (step S5: Yes), the VICS data analysis unit 40 performs route search restriction information based on the large vehicle restriction data Da. 50 is generated (step S6). Further, when there is no corresponding large vehicle restriction data Da (step S3: No), it is not necessary to generate the route search restriction information 50, and the route search unit 30 advances the processing procedure to step S7.

Next, the route search unit 30 determines whether or not the VICS data Dv is received by the VICS data receiving unit 18 for the surrounding area of the current position O (that is, the predetermined range R) (step S7). When the VICS data Dv is received (step S7: YES), the route search unit 30 generates route search restriction information 50 based on the VICS data Dv by the VICS data analysis unit 40 (step S8). If the VICS data Dv is not received (step S7: No), the processing procedure proceeds to the next step S9.
In step S9, the route search unit 30 excludes the road (link) where the vehicle is “not closed” based on the road data of the map data and the route search restriction information 50, and then determines the link cost. A guide route that minimizes the sum is searched to determine a guide route (step S9).
Through the above processing, the route search is performed by reflecting the large vehicle restriction information indicated in the large vehicle restriction data Da and excluding the road where the passage of the own vehicle is restricted.
The result of the route search is displayed on the map of the display unit 20 by the route guide unit 32. At this time, the “no-go” icon 60A based on the VICS data Dv and the large vehicle regulation data Da are displayed. The “no-go” icon 60B is displayed on the corresponding road. In addition to “no traffic”, various traffic regulation icons based on the VICS data Dv are displayed on the map.

By the way, as described above, in the guide route search operation, the large vehicle regulation data Da is read and reflected in the route search only for the predetermined range R in the unit of the secondary mesh M around the current position. Therefore, when the host vehicle travels outside the predetermined range R, the large vehicle regulation data Da is not reflected in the route that is being guided at that time.
Therefore, in the present embodiment, the route search unit 30 sequentially reads new large vehicle restriction data Da as the host vehicle advances and re-searches (reroutes) the guide route, and this re-search process will be described next.

FIG. 9 is a flowchart of the re-search process.
During the route guidance operation by the route guidance unit 32, the route search unit 30 intermittently acquires the current position O from the position detection unit 12 (step S 10), and adds a new 2 within a predetermined range R centered on the current position O. It is determined whether there is a next mesh (step S11). For example, as shown in FIG. 8B, when the host vehicle advances by one mesh in units of secondary mesh, a new secondary mesh Ma is present in the predetermined range R after traveling compared to the predetermined range R before traveling. Will be added. If it is determined in step S11 that there is no new secondary mesh Ma (step S11: No), the route searching unit 30 continues to monitor the current position O because there is no large vehicle restriction data Da to be read. Therefore, the processing procedure is returned to step S10.

  On the other hand, when there is a new secondary mesh Ma (step S11: Yes), the route search unit 30 determines whether or not there is large vehicle regulation data Da corresponding to the new secondary mesh Ma ( Step S12). When there is no large vehicle restriction data Da (step S12: No), the route search unit 30 returns the processing procedure to step S10 to continue monitoring the current position O because the guide route does not need to be searched again.

On the other hand, when there is the large vehicle restriction data Da (step S12: Yes), the route search unit 30 reads the corresponding large vehicle restriction data Da through the data access unit 33 (step S13), and the VICS data The analysis unit 40 generates route search restriction information 50 based on the large vehicle restriction data Da (step S14), and based on the route search restriction information 50, the road (link) where the vehicle is “not closed”. , The guide route that minimizes the sum of the link costs is re-searched to determine the guide route (step S15).
Thereafter, the route search unit 30 returns the processing procedure to step S10 and continues to monitor the current position O in order to re-search in accordance with the progress of the host vehicle.

  In the determination of step S12, even if there is new large vehicle restriction data Da, if there is no new traffic restriction that sets “no traffic” on the road on the current guidance route, the guidance route is re-established. Since the search is unnecessary, the route search unit 30 returns the processing procedure to step S10 without performing the re-search based on the large vehicle regulation data Da.

By this re-search process, as shown in FIG. 10, every time the own vehicle advances by one mesh in the unit of the secondary mesh M, the presence / absence of the large vehicle information by the new large vehicle regulation data Da is confirmed, and the guide route When there is large vehicle information (that is, “no traffic”) on the large vehicle regulation data Da, the guide route is re-searched, so that the road that is “no traffic” based on the large vehicle regulation data Da is displayed. Your vehicle will not be guided. Further, since the guide route is re-searched only when there is new large vehicle regulation data Da, the frequency of the re-search can be minimized.
Note that the re-search of the guidance route is performed separately each time a new VICS data Dv is received and a road in which the own vehicle becomes “traffic-free” newly appears on the guidance route.

As a result of the above route search, the traffic restriction set for each road (link) is specified, and the navigation device 1 displays a map on the display unit 20 as shown in FIG. An icon corresponding to the traffic restriction (in the illustrated example, only the “no-go” icon 60B of the large vehicle is illustrated) is attached to each of the roads that are restricted. In this state, for example, when one of the icons 60B is selected with the cursor 80 by an operation of the operation unit 14, the navigation device 1 displays the specific restriction contents of the traffic restriction indicated by the icon 60B as the restriction data file De or the like. It is specified based on the route search restriction information 50 and is popped up by a small window 82 as shown in FIG. At this time, when a plurality of types of traffic restrictions are set for one road (link), specific restriction contents of each traffic restriction are pop-up displayed one by one according to the user operation.
As described above, when the icon 60B is selected, the specific restriction contents of the traffic restriction are displayed in a pop-up display by the small window 82, so that the display area of the display unit 20 is not occupied by the restriction contents display. The display area can be used effectively.

In addition, the navigation device 1 provides voice guidance to the effect as the road for which traffic restriction is set approaches during route guidance.
That is, as shown in FIG. 12, the navigation apparatus 1 intermittently obtains the current position (step S20), and reaches a road that is in the traveling direction of the own vehicle and for which traffic regulation is set and is less than a predetermined distance along the road. Is determined based on the restriction data file De and the route search restriction information 50 (step S21). When the distance is equal to or less than the predetermined distance (step S21: YEs), the fact that there is a road whose traffic restriction is set in the traveling direction is output by voice (step S22). In this audio output, appropriate contents such as the distance to the road where the traffic regulation is set and the regulation contents of the traffic regulation are output by voice.
As a result, it is possible to grasp the traffic-restricted road ahead without looking at the display unit 20.
In addition, not only the distance on the road, but also a voice related to the traffic restriction may be output based on a straight line distance between the road where the traffic restriction is set and the current position.

As described above, according to the present embodiment, the search execution unit 42 that searches for a guidance route excluding roads restricted based on the restriction information of the VICS data Dv and the map data, the VICS data Dv The large vehicle restriction data Da indicating the road in which traffic restriction for large vehicles is set is formed in the unified intermediate format data 52 which is a data format common to the data format when the search execution unit 42 processes the restriction information. It was set as the structure which searches the guidance route | route except the road to which it input and the traffic regulation with respect to a large vehicle was set.
With this configuration, it is not necessary to previously include traffic restrictions for large vehicles in the map data, and the search execution unit 42 only needs to process the large vehicle restriction data Da in the same manner as the restriction information of the VICS data Dv and perform a route search. In addition, it is possible to perform a route search that reflects traffic restrictions on a large vehicle while suppressing changes to the map data and the search execution unit 42.

Further, according to the present embodiment, the search execution unit 42 is input with the large vehicle regulation data Da for a road in a predetermined range R centered on the current position O to search the guide route, and the current position O is secondary. Each time the vehicle moves by one mesh with the mesh M as a unit, the large vehicle restriction data Da is input to the road in the predetermined range R centering on the current position O after the movement, and the guidance route is re-searched.
As a result, compared to the case where all large vehicle restriction data Da that can be assumed as a guide route to the destination is read at once and the route is searched, the guide route is searched at a high speed and at a practical level, Can be provided.

  Further, according to the present embodiment, the search is performed again only when the new large vehicle restriction data Da exists in the predetermined range R after the movement, that is, when a road in which traffic restriction for large vehicles is set is newly included. With this configuration, the number of re-searches can be suppressed and processing can be reduced.

Further, according to the present embodiment, an icon indicating the content of the traffic regulation is attached to each of the roads for which traffic regulation is set, depending on whether the traffic regulation is based on the large vehicle regulation data Da. The map is displayed.
Thereby, the user can easily identify whether or not the traffic regulation is based on the large vehicle regulation data Da.

Further, according to the present embodiment, when the traffic regulation based on the VICS data Dv and the traffic regulation of the large vehicle based on the large vehicle regulation data Da are set for the same road, the traffic based on the large vehicle regulation data Da is set on the road. It was set as the structure which attaches | subjects and displays the content of regulation.
Thereby, the actual road traffic regulation with respect to the host vehicle can be accurately displayed.

  Further, according to the present embodiment, when a road in which traffic regulation is set is displayed on the display unit 20 with an icon corresponding to the content of the traffic regulation, and this icon is selected by the operation of the operation unit 14. Since the content of the traffic restriction of the selected icon is displayed in a pop-up manner by the small window 82, the display area of the display unit 20 is not occupied for the display of the restriction content, and the display area can be used effectively.

  Further, according to the present embodiment, when the distance to the road where the traffic regulation is set is equal to or less than the predetermined distance, the voice related to the traffic regulation is output. You can quickly grasp the roads that are restricted.

  The above-described embodiment is merely an example of the present invention, and can be arbitrarily modified and applied without departing from the spirit of the present invention.

For example, in the above-described embodiment, a large vehicle is illustrated as an example of the vehicle. However, the present invention is not limited to this, and any vehicle can use the navigation device 1 according to the present invention.
In addition, when the user of the vehicle equipped with the navigation device 1 does not need to restrict traffic to a large vehicle, the route search unit 30 causes the search execution unit 42 to search for a route without using the large vehicle restriction data Da. It is also good.

  Further, for example, the navigation apparatus 1t that receives the VICS data Dv and uses it for the route search is illustrated, but the present invention is not limited thereto. That is, not only the VICS data Dv but also, for example, a navigation device that receives transmission data including information used at the time of route search such as RDS-TMC, and the search execution unit 42 performs a route search based on the information of the transmission data. If present, the present invention can be applied.

  For example, although the traffic regulation with respect to a large vehicle was illustrated as predetermined traffic regulation, it is not restricted to this but it can be set as arbitrary traffic regulation. In particular, by setting a traffic restriction that is not set in advance in the road data of the map data, a route search that reflects the new traffic restriction can be easily realized.

  In addition, for example, when the display unit 20 displays a map around the travel area, the content of the traffic restriction is displayed on the road where the own vehicle is “traffic-free” and the road where other traffic restrictions are set. It is configured to display with different icons. However, the present invention is not limited to this, and the content of the traffic restriction may be indicated by symbols, characters, and icons other than icons, and displayed in association with the road.

  The present invention is not limited to a navigation device mounted on a vehicle, but can be widely applied to a navigation device mounted on a vehicle such as an arbitrary ship or aircraft, and is not limited to a vehicle-mounted type. You can also

DESCRIPTION OF SYMBOLS 1 Navigation apparatus 10 Control part 11 Control program 12 Position detection part 16 Storage part 18 VICS data receiving part (reception means)
20 Display section (display means)
30 Route Search Unit 35 Map Data Storage Unit (Map Storage Unit)
36 Large vehicle regulation data storage unit (predetermined regulation data storage means)
38 Vehicle information setting storage unit 40 VICS data analysis unit 42 Search execution unit (search execution means)
44 Data shaping part (shaping means)
46 Analysis and conversion unit 50 Route search restriction information 52 Unified intermediate format data (common data format)
56 Identification information 60A, 60B Icon Da Large vehicle regulation data (predetermined regulation data)
Dv VICS data (transmission data)
O Current position R Predetermined range

Claims (6)

Receiving means for receiving transmission data including real-time restriction information on road traffic restrictions;
Map storage means for storing map data of a map including roads;
Search execution means for searching for a guide route after excluding a road whose traffic is restricted based on the transmission data and the map data,
In a navigation device having shaping means for shaping the transmission data into a predetermined data format corresponding to the processing by the search execution means ,
Predetermined restriction data storage means for preliminarily storing, independently of the map data, predetermined restriction data that associates roads with predetermined traffic restrictions for large vehicles and the contents of the predetermined traffic restrictions. ,
The predetermined restriction data is generated in a data format according to the transmission data and stored in the predetermined restriction data storage means, and is input to the shaping means as data of a new distribution form of the transmission data,
The search execution means searches for a guide route after excluding a road whose traffic is restricted from a route search target based on the predetermined restriction data shaped into the predetermined data format by the shaping means. A featured navigation device.   The search execution means inputs the predetermined restriction data for a road within a predetermined range centered on the current position to search the guide route, and each time the current position moves a predetermined distance, the current position after movement is determined. 2. The navigation apparatus according to claim 1, wherein the predetermined restriction data is input to the center of the predetermined range of roads to search again for the guide route.   The search execution means re-searches the guide route only when a road for which the predetermined traffic restriction is set is newly included in the predetermined range after the movement. The navigation device described.   Each of the roads for which the traffic regulation is set is provided with display means for displaying a map on which the content of the traffic regulation is identifiable whether or not the traffic regulation is based on the predetermined regulation data. The navigation device according to any one of claims 1 to 3. Claim 4, wherein the traffic regulation is displayed are designated by the iconography in accordance with the contents of the traffic regulation to the set road, when the iconography is selected, and displaying the contents of the traffic regulation The navigation device described in 1. The navigation device according to any one of claims 1 to 5 , wherein a voice related to the traffic restriction is output when a distance to the road where the traffic restriction is set is equal to or less than a predetermined distance.

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