JP7051497B2 - Route guidance device and route guidance method - Google Patents

Description

The present invention relates to a route guidance device and a route guidance method having a function of displaying the route of a moving body.

In recent years, a route guidance device (so-called "car navigation") for guiding the route of a moving body such as an automobile has been used. The route guidance device uses GPS (Global Positioning System) to display the current location of the moving object on the road of map data. As this type of route guidance device, there is known a navigation device that outputs a warning in front of a dead end passage when a moving object approaches a dead end passage where the end of the passage is a dead end (see, for example, Patent Document 1). ). The navigation device of Patent Document 1 does not output a warning when a moving object approaches a closed passage that has been entered again. This prevents the warning from being always notified when the destination (for example, home, friend's house, store) exists in the closed passage. Therefore, for example, it is possible to prevent the driver from being offended by the warning.

Japanese Unexamined Patent Publication No. 2005-37145

Since the navigation device of Patent Document 1 individually determines whether or not to notify a warning of a dead-end passage for each dead-end passage, the processing load tends to increase.

An object of the present invention is to provide a route guidance device and a route guidance method for reducing a processing load related to a warning of a dead end passage.

The route guidance device according to the present invention notifies a dead-end warning before the moving body enters the dead-end passage. The route guidance device includes a storage unit, a detection unit, a control unit, and a notification unit. Map data and registration point information are stored in the storage unit. Map data is composed of a plurality of nodes indicating points on a passage and a plurality of links connecting the nodes. The map data includes stop information indicating whether or not the link connected to each node is a stop passage for each node. The registration point information indicates a registration point that does not require notification of a deadline warning. The detection unit detects the current location of the moving object. The control unit sets an expected route along the traveling direction of the moving object in the map data based on the current location of the moving object, and determines whether or not to notify the dead end warning based on the dead end information in the predicted route. do. The notification unit notifies a line stop warning according to the control of the control unit. If there is a node connected to the dead end passage in the expected route and the node connected to the dead end passage is outside the predetermined area including the registration point, the control unit notifies the dead end warning by the notification unit and connects to the dead end passage. If the node is within a predetermined area including the registration point, the notification unit is controlled so that the notification unit does not notify the deadline warning.

In the route guidance method according to the present invention, a dead end warning is notified before the moving body enters the dead end passage. In the above route guidance method, map data and registration point information are stored in the storage unit. Map data is composed of a plurality of nodes indicating points on the passage and a plurality of links connecting the nodes, and provides stop information indicating whether or not the link connected to each node is a dead end passage. Included for each node. The registration point information indicates a registration point that does not require notification of a deadline warning. The route guidance method includes a step of reading map data and registration point information from a storage unit by a control unit, a step of detecting the current location of a moving object by a detection unit, and a map based on the current location of a moving object by a control unit. Based on the step of setting the predicted route along the traveling direction of the moving object in the data and the stop information in the predicted route by the control unit, whether or not the node connected to the dead end passage is included in the predicted route. A step to determine, and if there is a node connected to the dead end passage in the expected route, the control unit determines whether the node connected to the dead end passage is within the predetermined area including the registration point, and the node connected to the dead end passage. If is outside the predetermined area, the notification unit includes a step of notifying the deadline warning, and if the node connected to the deadline passage is within the predetermined area, the deadline warning is not notified.

According to the present invention, in a route guidance device and a route guidance method having a function of warning in front of a dead end passage, the processing load related to the warning of the dead end passage can be reduced by not notifying the warning within a predetermined area. Can be done.

Block diagram showing the configuration of the route guidance device Diagram showing an example of a deadline warning Diagram to explain map data Flow chart to explain the overall operation of the route guidance device Diagram to explain the expected route Flowchart for explaining the display process of the expected route Diagram showing the case where the node connected to the dead passage is not in the non-notification area. Diagram showing the case where the node connected to the dead passage is in the non-notification area.

<Embodiment>
The route guidance device of the present embodiment has a function of notifying a warning about a dead-end passage in front of a dead-end passage where the end of the passage is a dead end. The route guidance device of the present embodiment does not notify the warning even if the moving body approaches the dead passage within a predetermined range area (hereinafter referred to as "non-notification area") including the registration point that does not require the notification of the deadline warning. .. This prevents warnings from being given in the vicinity of frequently visited places (eg, homes, friends' homes, stores). Specifically, the route guidance device of the present embodiment determines whether or not to notify a warning regarding the dead passage, and whether or not the point connected to the dead passage (for example, an intersection) is within the non-notification area including the registered point. Do based on. This makes it possible to further reduce the processing load related to the determination of whether or not to notify the warning. Hereinafter, embodiments will be described with reference to the drawings.

(Configuration of route guidance device)
FIG. 1 shows the route guidance device 1 of the present embodiment. The route guidance device 1 is various information processing devices having a function of displaying the route of the mobile body 100. For example, the route guidance device 1 is a stationary navigation device, a PND (Portable Navigation Device), a smartphone, a mobile phone, a notebook PC (Personal Computer), a PDA (Personal Digital Assistants), or a wearable device. The mobile body 100 is, for example, a car, a motorcycle, a bicycle, or a person.

As shown in FIG. 1, the route guidance device 1 includes a control unit 10, a storage unit 20, a current location detection unit 30, an input unit 40, a display unit 50, and a voice output unit 60.

The control unit 10 includes, for example, a CPU (Central Processing Unit) or an MPU (Micro Processing Unit) that realizes a predetermined function in cooperation with software. The control unit 10 realizes a predetermined function by reading data and programs stored in the storage unit 20 and performing various arithmetic processes. The program executed by the control unit 10 may be provided by a communication unit or the like that communicates according to a predetermined communication standard, or may be stored in a portable recording medium.

The control unit 10 may be composed of a dedicated electronic circuit designed to realize a predetermined function, or a hardware circuit such as a reconfigurable electronic circuit. The control unit 10 may be composed of various semiconductor integrated circuits. Examples of various semiconductor integrated circuits include, in addition to CPUs and MPUs, microcomputers, DSPs (Digital Signal Processors), FPGAs (Field Programmable Gate Arrays), and ASICs (Application Specific Integrated Circuits).

The control unit 10 includes a route setting unit 11, a route guidance unit 12, and a line stop notification unit 13 as functional configurations. The control unit 10 reads the map data 21 and the registration point information 25 from the storage unit 20. The control unit 10 is an example of an acquisition unit that acquires the registration point information 25.

When the destination is specified by the user via the input unit 40, the control unit 10 sets the destination and guides the route from the current location of the moving body 100 to the destination (first mode). Works with. When the destination is not specified by the user, the control unit 10 operates in a map display mode (second mode) for displaying a map around the current location of the moving object without setting the destination.

In the route guidance mode, the route setting unit 11 sets a route (referred to as a “guidance route” in the present embodiment) from the current location of the mobile body 100 to the destination. In the map display mode, the route setting unit 11 sets a route (referred to as an "expected route" in the present embodiment) of a predetermined distance or less from the current location of the moving body 100. The predicted route is a route that the mobile body 100 is expected to pass through. The route setting unit 11 may visually distinguish the predicted route from a passage other than the predicted route and display it on the display unit 50, or may not display the predicted route. The route setting unit 11 sets the guidance route and the predicted route, for example, by executing the program stored in the storage unit 20 by the microcomputer.

The route guidance unit 12 operates in the route guidance mode. The route guidance unit 12 guides the guidance route from the current location of the mobile body 100 to the destination. Specifically, the route guidance unit 12 displays the guidance route on the display unit 50 in the route guidance mode, and outputs a voice for moving the moving body 100 along the guidance route from the voice output unit 60.

The line stop notification unit 13 operates in the map display mode. When the moving body 100 approaches the dead end passage, the dead end notification unit 13 notifies the warning regarding the dead end passage by the display unit 50 and the voice output unit 60. For example, voice data indicating a line stop warning is stored in advance in the storage unit 20. By outputting the voice data to the voice output unit 60, the line stop notification unit 13 outputs a voice indicating a line stop warning from the voice output unit 60. For example, the dead end notification unit 13 may display a message indicating that the passage connected to the intersection ahead in the traveling direction is a dead end passage on the screen of the display unit 50. The line stop notification unit 13 discriminates between the case where the line stop warning is notified and the case where the line stop warning is not notified, for example, by executing the program stored in the storage unit 20 by the microcomputer.

The storage unit 20 is a storage medium that stores programs and data necessary for realizing the functions of the route guidance device 1. The storage unit 20 includes, for example, an HDD (Hard Disk Drive) or an SSD (Solid State Drive). Further, the storage unit 20 may be configured to include, for example, a flash memory, a DRAM (Dynamic Random Access Memory), a SRAM (Static Random Access Memory), a ROM (Read On Memory), or a combination thereof. The storage unit 20 may temporarily store various types of information. The storage unit 20 may be configured to function as a work area of the control unit 10, for example.

In the present embodiment, the map data 21 and the registration point information 25 are stored in the storage unit 20. The map data 21 includes, for example, images of roads and buildings and characters such as place names. In the present embodiment, the map data 21 includes the line stop information 22 (details of the line stop information 22 will be described later). Further, as will be described later, in the map data 21, as information indicating the route, a plurality of nodes N (N1, N2, N3 ...) Indicating points on the route and a plurality of links L (L1) connecting the nodes are connected. , L2, L3 ...) And (see FIG. 3). The registration point information 25 is information indicating a point (referred to as a “registration point” in the present embodiment) that does not require notification of a deadline warning. The registration point is, for example, the location of a home, a friend's house, or a store. The registration point information 25 indicates, for example, an address or the latitude and longitude of a geographic coordinate system.

The current location detection unit 30 detects a position indicating the current location of the moving body 100 in the geographic coordinate system. The current location detection unit 30 is, for example, a GPS module that receives radio waves from a GPS (Global Positioning System) satellite and measures the latitude and longitude of the received points. As a result, the current location detection unit 30 can acquire the current location of the mobile body 100 in real time. In addition to the GPS module, the current location detection unit 30 may include an acceleration sensor that detects acceleration or a gyro sensor that detects angular velocity. As a result, the current location detection unit 30 may detect the current location of the moving body 100 based on the acceleration or the angular velocity.

The current location detection unit 30 may be a communication module that receives a position signal indicating the position of the mobile body 100 from a GPS receiver provided in the mobile body 100 via, for example, a wireless or wired communication line. The current location detection unit 30 may be a communication module that receives sensor information indicating acceleration or angular velocity from an acceleration sensor or a gyro sensor provided in the mobile body 100 via a wireless or wired communication line. In this case, the current location detection unit 30 detects the current location of the mobile body 100 based on the received position signal and sensor information. Communication modules are IEEE (Institute of Electrical and Electronic Engineers) 802.3, IEEE802.11a / 11b / 11g / 11ac, USB (Universal Serial Bus), HDMI (registered trademark) (High-Definition Multimedia Interface), IEEE1395, Wi. -Communicate in accordance with predetermined communication standards such as Fi (registered trademark) and Bluetooth (registered trademark).

The input unit 40 is an HMI (Human Machine Interface) for inputting various operations by the user. The input unit 40 may be, for example, a touch panel configured together with the display unit 50. Further, the input unit 40 may be a keyboard, a button, a switch, and a physical key composed of a combination thereof. The input unit 40 is electrically connected to the control unit 10. The user can set the destination via the input unit 40. The user can set the registration point via the input unit 40. The registration point information 25 is input via the input unit 40, for example, and is stored in the storage unit 20. The input unit 40 is an example of an acquisition unit that acquires the registration point information 25.

The display unit 50 is composed of, for example, a liquid crystal display or an organic EL (Electro Luminescence) display. The display unit 50 displays the current location of the map and the moving body 100. The display unit 50 is further configured to be able to display the destination of the moving body 100, the guidance route from the current location to the destination, and the deadline warning. The display unit 50 is an example of a notification unit that notifies a line stop warning. The display unit 50 may be physically integrated with the route guidance device 1 as a part of the route guidance device 1. Alternatively, the display unit 50 may be physically separated from the route guidance device 1 and may be communicably connected to the route guidance device 1 by a communication function.

The voice output unit 60 is, for example, a speaker that converts an electric signal into voice and outputs voice. The voice output unit 60 is an example of a notification unit that notifies a line stop warning. The voice output unit 60 may be physically integrated with the route guidance device 1 as a part of the route guidance device 1. Alternatively, the voice output unit 60 may be physically separated from the route guidance device 1 and may be communicably connected to the route guidance device 1 by a communication function.

FIG. 2 shows an example of a line stop warning. A mark 52 indicating the position of the moving body 100 is displayed on the display unit 50. When the moving body 100 approaches the dead end passage 53, the display unit 50 displays a message indicating the dead end warning 51 on the screen, and the voice output unit 60 outputs the dead end warning 61 by voice.

FIG. 3 schematically shows the map data 21. In the map data 21, the passage through which the mobile body 100 can pass is a plurality of nodes N (N1, N2, N3 ...) Indicating points on the passage and a plurality of links L (L1, L2, ...) Connecting the nodes. L3 ...). In the present specification, as shown in FIG. 3, the node is referred to as “N” and the link is referred to as “L”. In the present specification, when the nodes N1, N2, N3 ... Are not individually distinguished, they are collectively referred to as a node N, and when the links L1, L2, L3 ... Are not individually distinguished, the links L are collectively referred to. It is called. The map data 21 includes a set of a plurality of nodes N and a plurality of links L.

The node N may be a node on the road network representation such as an intersection. Nodes N may be provided at predetermined intervals on the passage. The link L corresponds to a passage between nodes. In FIG. 3, the link L3 and the link L4 correspond to a closed passage. In the present embodiment, the map data 21 includes the line stop information 22 associated with each node N. That is, the line stop information 22 is embedded in each node N. The dead end information 22 indicates whether or not there is a link corresponding to the dead end passage among the one or more links L connected to the node N. The dead end information 22 includes information for identifying the link L corresponding to the dead end passage. From the dead end information 22, it can be known whether or not there is a dead end passage ahead of each node N.

(Operation of route guidance device)
The overall operation of the route guidance device 1 will be described with reference to FIG. FIG. 4 shows the operation of the control unit 10 of the route guidance device 1. The route guidance device 1 starts the operation shown in FIG. 4, for example, when the power of the route guidance device 1 is turned on. The route guidance device 1 may start the operation shown in FIG. 4 when the application program for performing navigation is started.

The control unit 10 acquires the map data 21 from the storage unit 20 (S1). The control unit 10 determines whether or not the destination of the mobile body 100 has been input from the input unit 40 (S2). When the destination is input, the control unit 10 advances to the route guidance mode for guiding the guidance route (S3). Specifically, the route setting unit 11 sets a guidance route from the current location of the mobile body 100 to the destination. The route guidance unit 12 guides the guidance route. The guidance process is route guidance such as so-called car navigation. The route guidance unit 12 provides route guidance to the destination based on the current location by the display unit 50 and the voice output unit 60. If the destination is not input, the control unit 10 proceeds to the map display mode for displaying the predicted route (S4). As will be described later, the control unit 10 notifies the deadline warning only in the map display mode, and does not notify the deadline warning in the route guidance mode.

FIG. 5 schematically shows the expected route 150 set in the map display mode. The route setting unit 11 sets the predicted route 150 along the traveling direction of the moving body 100 based on the current location of the moving body 100 and the map data 21. The expected route 150 is configured to include one or more links L. Both ends of the expected route 150 may be nodes N.

The route setting unit 11 sets the link L at a predetermined angle θ or less with respect to the traveling direction of the moving body 100 in the predicted route 150. The predetermined angle θ may be set to 0 degrees or more and 30 degrees or less. The predetermined angle θ may be 0 degrees or more and 15 degrees or less. By setting the predicted path 150 by a relatively simple method of removing the link L having an angle larger than the predetermined angle θ with respect to the traveling direction, the processing load in generating the predicted path 150 can be reduced.

The route setting unit 11 determines the tip of the predicted route 150 at a predetermined distance d1 or less along the traveling direction from the current location of the moving body 100. For example, in the example of FIG. 5, the tip of the predicted path 150 is the farthest node N7 at a predetermined distance d1 or less. The route setting unit 11 may include the link L on which the moving body 100 overlaps in the predicted route 150 by map matching. For example, in the example of FIG. 5, the rear end of the predicted route 150 is the node N2 that the mobile body 100 has just passed.

The route setting unit 11 does not set the predicted route 150 when there is no link L within the range of the predetermined angle θ or less with respect to the traveling direction of the moving body 100 in the map data 21.

FIG. 6 shows the display processing of the predicted route (details of step S4) by the control unit 10. FIG. 7 shows a case where the node N3 connected to the dead passage is not in the non-notification area 202. FIG. 8 shows a case where the node N3 connected to the dead passage is in the non-notification area 202. The non-notification area 202 is set to, for example, a circular area having a radius r (for example, r = 10 m to 1 km) centered on the registration point 201. The non-notification area 202 is not limited to a circle, and may be an ellipse or a polygon. The line stop notification unit 13 sets the non-notification area 202 based on the registration point 201.

The route setting unit 11 acquires the current location of the mobile body 100 from the current location detection unit 30 (S401). The route setting unit 11 sets the predicted route 150 by the link L having a predetermined distance d1 or less and a predetermined angle θ or less in the traveling direction of the moving body 100 (S402). Step S402 is also referred to as an expected route setting step. The route setting unit 11 may visually distinguish the predicted route 150 from the passages other than the predicted route 150 and display the predicted route 150 on the display unit 50.

The dead-end notification unit 13 determines whether or not there is a node N connected to the dead-end passage on the predicted route 150 based on the dead-end information 22 on the predicted route 150 (S403). Step S403 is also referred to as a line stop determination step. If there is a node N connected to the dead end passage on the expected route 150 (Yes in S403), the dead end notification unit 13 determines whether or not the node N is in the non-notification area 202 for any of the registration points 201 (S404). ). Step S404 is also referred to as an area determination step.

If the node N connected to the dead passage is not included in any of the non-notification areas 202 for all the registration points 201 (Yes in S404), the dead notice unit 13 notifies the dead warning (S405). Hereinafter, step S405 is also referred to as a notification step. For example, as shown in FIG. 7, when the node N3 connected to the dead end passage on the expected route 150 is not included in any of the non-notification areas 202, the deadline notification unit 13 is shown in FIG. As described above, the message indicating the line stop warning 51 is displayed on the display unit 50, and the line stop warning 61 is output by voice by the voice output unit 60. As a result, the user is notified that the links L3 and L4 extending from the node N3 are dead paths. As shown in FIG. 7, the deadline warnings 51 and 61 may be output, for example, before the predetermined distance d2 of the node N3 when the moving body 100 approaches the node N3 connected to the dead end passage. The display unit 50 may enlarge and display the map around the node N3 in front of the predetermined distance d2 of the node N3. In this case, in step S405 for notifying the deadline warnings 51 and 61, it may be determined whether or not the distance between the current location of the moving body 100 and the node N connected to the dead end passage is a predetermined distance d2 or less. For example, d2 ≦ d1.

On the other hand, if the node N connected to the dead passage is in the non-notification area 202 for any of the registration points 201 (No in S404), the dead notice unit 13 does not notify the dead warning (S407). For example, as shown in FIG. 8, if the node N3 connected to the dead passage is included in any one of all the non-notification areas 202, the dead notice unit 13 does not notify the dead warning.

The route setting unit 11 determines whether or not the user has operated to turn off the power of the route guidance device 1 (S406). The route setting unit 11 ends the display processing of the predicted route shown in FIG. 6 when the user operates to turn off the power of the route guidance device 1 (Yes in S406). If the operation of turning off the power of the route guidance device 1 has not been performed (No in S406), the route setting unit 11 returns to step S401 and continues the setting of the predicted route 150 based on the current location of the mobile body 100. The operation shown in FIG. 6 may be terminated when the user stops the application program for navigation.

As described above, it is determined whether or not to notify the deadline warning based on whether or not the node N connected to the deadline passage is in the non-notification area 202. Since the necessity of notification of the deadline warning is determined by a relatively simple method in this way, the processing load can be reduced.

(Overview and effects)
The route guidance device 1 of the present invention has a function of notifying a dead end warning before the moving body 100 enters the dead end passage. The route guidance device 1 includes a storage unit 20 that stores map data 21 and registration point information 25. The map data 21 is composed of a plurality of nodes N indicating points on the passage and a plurality of links L connecting the nodes N. Further, the map data 21 includes stop information 22 indicating whether or not the link L connected to each node N is a stop passage for each node. The registration point information 25 indicates a registration point 201 that does not require notification of a deadline warning. The route guidance device 1 sets and predicts the current location detection unit 30 that detects the current location of the moving body 100 and the predicted route 150 along the traveling direction of the moving body in the map data 21 based on the current location of the moving body 100. A control unit 10 that determines whether or not a line stop warning is required based on the line stop information 22 in the route 150, and a notification unit (display unit 50, voice output unit 60) that notifies the line stop warning according to the control of the control unit 10. And prepare. When there is a node connected to the dead end passage in the expected route 150, the control unit 10 notifies the dead end warning by the notification unit if the node connected to the dead end passage is outside the non-notification area 202. The non-notification area 202 is an area within a predetermined range including the registration point 201. Even if there is a node connected to the dead end passage in the expected route 150, the control unit 10 does not notify the dead end warning by the notification unit if the node connected to the dead end passage is in the non-notification area 202. , Control the notification unit.

In this way, the stop information 22 indicating whether or not the node N is connected to the dead end passage is associated with each node. Therefore, by referring to the stop information 22 of each node N, the node N is connected to the node N. It is possible to determine whether or not the existing link L is a dead-end passage. Further, the determination as to whether or not to give a warning is performed based on whether or not the node N on the expected route 150 is in the non-notification area 202. That is, the necessity of warning is determined for each node, and it is not determined individually for each dead end passage. Therefore, for example, even when a plurality of dead-end passages are connected to the node N on the expected route 150, the necessity of warning can be determined only by referring to the dead-end information 22 of the node N. Therefore, it is possible to reduce the processing load related to the determination of whether or not to notify the warning. Further, when there are a plurality of nodes connected to the dead end passage in the non-notification area 202, the dead end warning is not notified at that node, so that the processing load around the registration point 201 is reduced.

The control unit 10 sets a link in the map data 21 whose angle formed by the moving body 100 with the traveling direction is equal to or less than a predetermined angle θ in the predicted route 150. By setting the predicted path 150 by a relatively simple method of removing the link L having an angle larger than the predetermined angle θ with respect to the traveling direction, the processing load in generating the predicted path 150 can be reduced.

The control unit 10 sets the destination of the moving body 100 and guides the route from the current location to the destination in the route guidance mode (first mode), and in the predetermined distance d1 or less from the current location without setting the destination. It is equipped with a map display mode (second mode) for setting the expected route 150, and does not notify a deadline warning in the route guidance mode. In the route guidance mode, it is possible to notify an unnecessary deadline warning and suppress the user from feeling annoyed. Further, by not notifying the line stop warning in the route guidance mode, the processing load in the route guidance mode can be reduced.

If the map data 21 does not have a link L connected to the predicted route in the traveling direction, the control unit 10 ends the setting of the predicted route. This makes it possible to reduce the processing load in setting the expected route 150.

In the route guidance method of the present invention, in the predicted route setting step (step S402), the predicted route 150 along the traveling direction of the moving body 100 is set in the map data. In the dead end determination step (step S403), it is determined whether or not each node N on the expected route 150 is connected to the dead end passage. In the area determination step (step S404), it is determined whether or not the node N connected to the dead end passage is in the non-notification area 202. In the notification step (step S405), when the node N connected to the dead end passage is outside the non-notification area 202, a dead end warning is notified. In the route guidance method of the present invention, the necessity of notifying the deadline warning is determined depending on whether or not the node N connected to the deadline passage is in the non-notification area 202. Therefore, the present invention relates to determining whether or not to notify the warning. The processing load can be reduced.

<Other embodiments>
In the above embodiment, the user inputs the registration point 201 via the input unit 40, and the line stop notification unit 13 sets the non-notification area 202 based on the registration point 201, but the user sets the non-notification area 202 via the input unit 40. The non-notification area 202 may be set.

The route guidance device of the present invention is useful as a device for displaying the route of a moving body.

1 Route guidance device 10 Control unit 11 Route setting unit 12 Route guidance unit 13 Line stop notification unit 20 Storage unit 30 Current location detection unit 40 Input unit 50 Display unit 60 Voice output unit

Claims (5)

A route guidance device that gives a dead-end warning indicating that the end of the passage is a dead end before the moving body enters the dead-end passage.
Map data composed of a plurality of nodes indicating points on the passage and a plurality of links connecting the nodes, and the stop information indicating whether or not the link is the stop passage is provided for each node. A storage unit that stores the map data including
A detector that detects the current location of the moving object,
An input unit that accepts the designation of the destination of the moving body,
When the designation is not accepted, the predicted route along the traveling direction of the moving body is set based on the current location and the map data, and the said stop information in the predicted route is used. A control unit that determines whether notification of a deadline warning is necessary, and
A notification unit that notifies the line stop warning according to the control of the control unit, and
Equipped with
From the stop information, the control unit determines whether or not the node included in the expected route is connected to the stop passage, and the node does not need to notify the stop warning in the non-notification area. Determine if it is outside the
When it is determined that the node is connected to the dead passage and is outside the non-notification area, the notification unit is notified of the dead notice for the node.
When it is determined that the node is connected to the dead passage and is in the non-notification area, the notification unit is not notified of the stop warning for the node.
Route guidance device. The route guidance device according to claim 1, wherein the control unit sets the link having an angle formed by the moving body with the traveling direction of a predetermined angle or less in the map data as the predicted route. The route guidance device according to claim 1 or 2, wherein the control unit does not notify the notification unit of the line stop warning when the designation is received . The storage unit further stores registration point information indicating a registration point that does not require notification of the deadline warning.
The non-notification area is a predetermined area including the registration point.
The route guidance device according to any one of claims 1 to 3. A route guidance method used in a route guidance device that notifies a dead end warning indicating that the end of the passage is a dead end before the moving body enters the dead end passage.
The route guidance device includes an input unit for receiving designation of a destination of the moving body, a detection unit for detecting the current location of the moving body, a storage unit, a control unit, and a notification unit.
The control unit
Map data composed of a plurality of nodes indicating points on the passage and a plurality of links connecting the nodes, and the stop information indicating whether or not the link is the stop passage is provided for each node. The map data including the map data is read out from the storage unit, and the map data is read out from the storage unit.
When the designation is not accepted, the predicted route along the traveling direction of the moving body is set based on the current location detected by the detection unit and the map data .
From the stop information, it is determined whether or not the node included in the expected route is connected to the stop passage, and whether the node is outside the non-notification area that does not require the notification of the stop warning. Judge whether or not,
When it is determined that the node is connected to the dead passage and is outside the non-notification area, the notification unit is notified of the dead notice for the node.
When it is determined that the node is connected to the dead passage and is in the non-notification area, the notification unit is not notified of the stop warning for the node.
Route guidance method.

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