JP2024030594A - navigation control device - Google Patents

Abstract

An object of the present invention is to provide a navigation control device that can appropriately present evaluation details regarding road congestion to a driver. SOLUTION: A route search unit 30 that searches for a route for the own vehicle to a destination, a position information acquisition unit 22 that acquires position information of the own vehicle, and a travel speed information acquisition unit 24 that acquires the travel speed of the own vehicle. and a road information acquisition unit that acquires information regarding roads included in the route from the current position of the host vehicle to the destination and the surrounding environment of the roads when a predetermined time or more has elapsed with the acquired traveling speed being below a predetermined speed. 25, an evaluation unit 26 that calculates an index value for evaluating the road congestion situation based on the acquired information, and an evaluation unit 26 that calculates an index value for evaluating the road congestion situation based on the acquired information, and a and a display control unit 50 that displays the evaluation content that is a combination of the index values obtained. [Selection diagram] Figure 1

Description

The present invention relates to a navigation control device.

Patent Document 1 discloses a technology that allows a user to recognize the difficulty level of a set travel route using a radar chart. This type of radar chart divides the evaluation target into a plurality of items and shows the index value calculated for each item, so that the user can visually recognize the evaluation contents more easily.

JP2021-92484A

By the way, the Road Traffic Act, which was recently revised (December 1, 2019), makes it illegal for drivers to stare at navigation devices or smartphone screens for long periods of time while driving. For this reason, for example, when a traffic jam occurs on the road on which the driver is driving, even if an evaluation (radar chart) of the traffic congestion situation on this road is displayed on the screen of the navigation device, the driver will not be able to fully confirm the evaluation. This was difficult, and there was room for improvement in this respect.

The present invention has been made in view of the above, and an object of the present invention is to provide a navigation control device that can appropriately present evaluation details regarding road congestion to a driver.

In order to solve the above-mentioned problems and achieve the objectives, a navigation control device according to the present invention includes a route search unit that searches for a route for the own vehicle to a destination, and a position information acquisition unit that acquires position information of the own vehicle. a traveling speed information acquisition part that acquires the traveling speed of the own vehicle, and a traveling speed information acquisition part that acquires the traveling speed of the own vehicle, and if the acquired traveling speed is less than a predetermined speed for a predetermined time or more, the information is included in the route from the current position of the own vehicle to the destination. a road information acquisition unit that acquires information regarding the road and the surrounding environment of the road; an evaluation unit that calculates an index value for evaluating a road congestion situation based on the acquired information regarding the road and the surrounding environment of the road; A display control unit that displays, in a predetermined area, evaluation content that is a combination of index values calculated for each of a plurality of items.

According to the navigation control device according to the present invention, it is possible to appropriately present the evaluation contents regarding the road congestion situation to the driver.

FIG. 1 is a block diagram showing a configuration example of a navigation device according to this embodiment. FIG. 2 is a schematic diagram illustrating an example of the interior of the vehicle as viewed from the driver's seat. FIG. 3 is a diagram showing an example of a radar chart displayed on the windshield. FIG. 4 is a diagram showing an example of a radar chart displayed on the windshield. FIG. 5 is a flowchart showing an example of processing in the navigation control device according to the present embodiment. FIG. 6 is a schematic diagram showing an example of an image of a message that is displayed on the windshield and prompts the user to re-search the route.

Embodiments of a navigation control device according to the present invention will be described below based on the drawings. Note that the present invention is not limited to the description of the embodiments below. Further, the components in the following embodiments include those that can be easily replaced by those skilled in the art, or those that are substantially the same. Furthermore, the components in the embodiments described below can be omitted, replaced, or modified in various ways without departing from the gist of the present invention. In the following embodiments, necessary components will be described for illustrating embodiments of the vehicle-mounted control device according to the present invention, and other components will be omitted.

The navigation device controlled by the navigation control device according to the present invention searches for the optimal route between the current location and the destination set by the driver, displays this route on a map, and provides route guidance to the destination. conduct. When a traffic jam occurs on the route being traveled, the navigation device displays, for example, on a windshield or the like, an evaluation of the traffic congestion situation on the route. The navigation device is a vehicle navigation device that is mounted on a vehicle or carried into the vehicle in a portable manner. The navigation device may consist of a handheld terminal, a device installed in a vehicle, or a combination of several devices.

First, an example of the configuration of a navigation device according to this embodiment will be described. FIG. 1 is a block diagram showing a configuration example of a navigation device according to this embodiment. The navigation device (in-vehicle device) 1 includes an operation section 11, a GPS (Global Positioning System) reception section 12, a map information storage section 13, a communication section 14, a display section 15, a vehicle speed detection section 16, and a VICS ( The vehicle information and communication system) includes a receiving section 17 and a navigation control device 20.

The operation unit 11 can accept various operations on the navigation control device 20. The operation unit 11 is configured by, for example, a physical operation unit for the navigation control device 20, a touch panel disposed on the display unit 15, a voice input unit that collects sound through a microphone, or the like. The operation unit 11 can accept, for example, an operation to input information regarding a destination or to instruct a route search (including re-search) to the destination. The operation unit 11 can accept, for example, an operation for switching display information of a route guide map displayed on the display unit 15. The operation unit 11 outputs operation information to the operation reception control unit 21 of the navigation control device 20.

The GPS receiving unit 12 receives radio waves from a GPS satellite (not shown). The GPS receiving unit 12 outputs the received radio wave signal to the position information acquisition unit 22 of the navigation control device 20.

The map information storage unit 13 stores map information. The map information is, for example, road information including intersections. The map information includes road type information classified by road type, such as expressways, national highways, other roads including prefectural roads, and the like. The map information also includes information regarding the environment surrounding the road (information regarding facilities such as various stores and schools located around the road). The map information storage unit 13 outputs the stored map information to the map information acquisition unit 23 of the navigation control device 20. The map information storage unit 13 may be a storage device such as an external server.

The communication section 14 is a communication unit. The communication unit 14 may communicate using any method such as the Internet or a mobile phone line. The communication unit 14 performs various communications based on control signals output from the communication control unit 40 of the navigation control device 20.

The display unit 15 is, for example, a display device specific to the navigation device 1, a display device shared with other systems including a car audio, or the like. The display unit 15 is a display including, for example, a liquid crystal display (LCD) or an organic electro-luminescence (EL) display. When the navigation device 1 is installed in a vehicle, the display unit 15 is arranged on the dashboard, instrument panel, center console, etc. in front of the driver of the vehicle. The display unit 15 displays symbols indicating the current location and the destination, line segments indicating the guidance route, etc. on a map from the current location to the destination based on the video signal output from the display control unit 50 of the navigation control device 20. Display each route guidance video. In this embodiment, the display unit 15 includes, for example, a head-up display unit (not shown) arranged in the dashboard of the vehicle. This head-up display unit displays an image on the windshield (windshield) by projecting a portion of the image onto the windshield. The image displayed on the windshield will be described later.

The vehicle speed detection unit 16 detects, for example, the vehicle speed (traveling speed) of the host vehicle. The vehicle speed detection unit 16 acquires a pulse signal from a vehicle speed sensor disposed on the drive shaft or tire of the host vehicle, and detects the vehicle speed of the host vehicle from this pulse signal. The vehicle speed detection section 16 outputs traveling speed information indicating the detected vehicle speed to the traveling speed information acquisition section 24 of the navigation control device 20 .

The VICS receiving unit 17 receives road traffic information transmitted from the VICS (registered trademark) center. This road traffic information includes information on traffic jams, accidents, and regulations due to construction work, as well as, for example, information on expressway entrance closures, information on full (vacant) service areas and parking areas, and construction schedule information. The VICS reception unit 17 outputs the received road traffic information signal to the road information acquisition unit 25 of the navigation control device 20.

The navigation control device 20 includes a storage device in which various control programs and data used for various control processes are stored, and an arithmetic processing device that executes predetermined control programs. The storage device is, for example, a ROM (Read Only Memory), a RAM (Random Access Memory), an HDD (Hard Disk Drive), a nonvolatile or volatile semiconductor memory such as a flash memory, a magnetic disk, an optical disk, a compact disk, or a DVD. etc. The arithmetic processing device is, for example, a CPU (Central Processing Unit), an MCU (Micro Controller Unit), a microprocessor, a microcomputer, a DSP (Digital Signal Processor), or the like. Navigation control device 20 is implemented from one or more storage devices and one or more arithmetic processing devices.

The navigation control device 20 searches for an optimal route between the current location and the destination set by the driver, displays this route on a map on the display unit 15, and provides route guidance to the destination. The navigation control device 20 calculates a plurality of index values for evaluating the road congestion situation based on information regarding the roads included in this route and the surrounding environment when traffic congestion occurs on the route that the own vehicle is traveling. Calculations are made for each item, and the evaluation content, which is a combination of these index values, is displayed on the windshield. The navigation control device 20 includes an operation reception control section 21, a position information acquisition section 22, a map information acquisition section 23, a traveling speed information acquisition section 24, a road information acquisition section 25, an evaluation section 26, and a route search section. 30, a route guide section 31, a communication control section 40, and a display control section 50. Each of them is connected by a bus BS.

The operation reception control unit 21 acquires operation information input to the operation unit 11. The operation reception control unit 21 receives various operation information such as input operation of destination information and route search to the destination, and outputs a control signal.

The position information acquisition unit 22 acquires position information indicating the current location of the host vehicle. In this embodiment, the position information acquisition section 22 acquires the position information of the own vehicle based on the radio wave signal acquired by the GPS reception section 12. The position information acquisition section 22 outputs the acquired position information of the own vehicle to the map information acquisition section 23, the evaluation section 26, the route search section 30, the route guidance section 31, and the display control section 50.

The map information acquisition unit 23 acquires map information from the map information storage unit 13. The map information acquisition unit 23 arrives at the destination from the current location of the own vehicle based on the position information of the own vehicle acquired by the position information acquisition unit 22 and the position information of the destination acquired by the operation reception control unit 21. Map information regarding up to this point is acquired from the map information storage unit 13. The map information acquisition unit 23 outputs the acquired map information to the road information acquisition unit 25 and the display control unit 50.

The traveling speed information acquisition section 24 acquires traveling speed information from the vehicle speed detection section 16. The traveling speed information acquisition section 24 outputs the acquired traveling speed information to the evaluation section 26.

The road information acquisition unit 25 receives road traffic information from the VICS reception unit 17. The road information acquisition unit 25 acquires map information regarding the route to the destination from the map information acquisition unit 23. This map information includes information about the type of road the vehicle is traveling on and information about the surrounding environment of the road where the vehicle is currently located. Further, the road information acquisition unit 25 may acquire information regarding roads included in the route to the destination and the surrounding environment of the roads via the communication unit 14 . The road information acquisition unit 25 outputs the acquired road type information on which the vehicle is traveling and information regarding the surrounding environment of the road at the current location of the host vehicle to the evaluation unit 26.

The evaluation section 26 is a section that mainly controls the operation of displaying the above-mentioned evaluation contents on the windshield. The evaluation unit 26 determines whether or not a traffic jam is occurring on the road on which the host vehicle is traveling, based on the acquired travel speed information. Specifically, the evaluation unit 26 determines that if the driving speed remains below a predetermined speed (for example, 10 km/h versus the legal speed of 50 km/h) for a predetermined period of time or more (for example, 5 minutes or more), a traffic jam occurs. It is determined that the Preferably, this predetermined speed is changed depending on the type of road (expressway or general road).

Furthermore, when it is determined that a traffic jam has occurred, the evaluation unit 26 evaluates the roads based on the information regarding the roads included in the route from the current position to the destination and the surrounding environment of the roads acquired from the road information acquisition unit 25. Calculate the index value for evaluating the traffic congestion situation. In this case, the evaluation unit 26 selects a plurality of characteristic items set corresponding to the road type, for example, and calculates an index value for each item. The characteristic items to be selected may be sequentially selected according to predetermined priorities corresponding to, for example, the road type, the time of travel, or the surrounding environment of the road, or they may be selected by the learning model. You can also select items with . The evaluation unit 26 outputs the calculated index for each item to the display control unit 50.

The route search unit 30 searches for a route from the current position of the host vehicle to the destination. Further, if a traffic jam occurs while guiding the searched route, the route search unit 30 searches for a new route according to the driver's instructions. The route search unit 30 presents the searched route to the driver. The route search method is not limited and can use any known route search method.

The route guidance unit 31 provides route guidance from the current location of the own vehicle to the destination. More specifically, the route guidance section 31 provides route guidance along the searched route. The route guidance unit 31 provides route guidance from the current location of the own vehicle to the destination using voice. The route guidance method is not limited and can be any known route guidance method.

The communication control section 40 controls communication in the communication section 14 . The communication control unit 40 performs wireless communication with an external information server (not shown) via the communication unit 14. In this embodiment, the communication control unit 40 may search for and receive information regarding roads included in the route to the destination and the surrounding environment of the roads from an external information server.

The display control unit 50 causes the display unit 15 to display the route searched by the route search unit 30. For example, the display control unit 50 displays the searched route superimposed on the map image. In addition, the display control unit 50 displays an image showing a radar chart (evaluation content) combining a plurality of index values for each item calculated by the evaluation unit 26 on the windshield (within the range of the driver's field of vision while driving). (predetermined area).

Next, a video showing a radar chart displayed on the windshield will be described. FIG. 2 is a schematic diagram illustrating an example of the interior of the vehicle as viewed from the driver's seat. 3 and 4 are diagrams showing examples of radar charts displayed on the windshield.

As shown in FIG. 2, a dashboard 100, a steering wheel 101 rotatable with respect to the dashboard 100, and a windshield 102 located above the dashboard 100 are provided in front of the driver's seat of the vehicle. It is being The dashboard 100 is a member that partitions the vehicle interior and the engine room. In front of the driver's seat of this dashboard 100, a meter panel (also referred to as an instrument panel) 103 equipped with, for example, a speedometer and a tachometer is provided, and in front of the driver's seat and the passenger seat, For example, the display section 15 having the above-mentioned touch panel is arranged. Steering wheel 101 is a member that receives a steering operation for steering the vehicle. The windshield 102 is a member that serves as a windshield during driving, and is made of a transparent member such as glass that allows visibility from the front.

Since the windshield 102 is placed ahead of the line of sight of the driver while driving, the windshield 102 functions as a predetermined area included within the field of view of the driver while driving. For this reason, for example, by displaying an image showing specific information on the windshield 102 using a head-up display unit (not shown) disposed in the dashboard 100, the driver can watch the windshield without shifting his/her line of sight as much as possible. The video (information) displayed at 102 can be visually recognized. In this embodiment, when a traffic jam occurs on the road on which the vehicle is traveling, a head-up display unit (not shown) disposed in the dashboard 100 displays a radar chart 110 that shows the evaluation content of the traffic congestion situation on the road. is displayed on the windshield 102. In the example of FIG. 2, the radar chart 110 is displayed on the lower part of the windshield 102 in front of the driver's seat, but the display area can be changed as appropriate without affecting the visibility during driving.

As shown in FIG. 3, the radar chart 110 is a graph in which a plurality of axes are arranged radially, and index values representing the characteristics of each item are plotted on each axis. In other words, the radar chart 110 is a graph in which a variable with multiple items is expressed on a regular polygon without converting it into a composition ratio.The radar chart 110 is a graph in which variables with multiple items are expressed on a regular polygon without converting them into composition ratios. There is. The radar chart 110 shown in FIG. 3 shows, for example, the content of evaluating the traffic congestion situation on an expressway, and each of the five axes is associated with a characteristic item for evaluating the traffic congestion situation on the expressway. . Note that the number of axes of the radar chart 110 is not limited to five, and can be changed as appropriate depending on the number of characteristic items to be illustrated.

In the radar chart 110 of FIG. 3, the time of occurrence of traffic jam, location of accident, distance of traffic jam, distance to service area, and distance to exit and IC are selected as characteristic items. The traffic jam occurrence time evaluates how long before the current traffic jam (for example, an accident traffic jam or a natural traffic jam) occurred. In this case, the longer the elapsed time from now (for example, 3 hours ago), the higher the possibility that the traffic congestion has been resolved, and therefore the index value (evaluation) is lower. On the other hand, the shorter the elapsed time from the current time (for example, within 20 minutes), the higher the possibility that the traffic jam will be longer, so the index value becomes higher.

Furthermore, as for the accident location, the distance from the location where the accident occurred to the current location is evaluated. In this case, the shorter the distance from the accident location to the current location (for example, within 200 meters), the lower the index value will be because it will take less time to get through the traffic jam. On the other hand, the longer the distance from the accident location to the current location (for example, 5 km or more), the higher the index value will be because it will take more time to get through the traffic jam.

Further, the traffic jam distance is evaluated, for example, by evaluating the distance of a traffic jam occurring ahead in the direction of travel. In this case, the shorter the distance of the traffic jam (for example, within 300 meters), the lower the index value because it takes less time to get through the traffic jam. On the other hand, the longer the distance of the traffic jam (for example, 10 km or more), the longer it takes to get through the traffic jam, so the index value becomes higher.

Furthermore, the distance to the service area is evaluated by evaluating how far away the service area is from the current location. In this case, the shorter the distance from the current location (for example, within 1 km), the lower the index value will be because the user can take a break, eat, refuel, etc. in the service area until the traffic congestion clears. On the other hand, the longer the distance from the current position (for example, 10 km or more), the harder it is to take a long break, and therefore the index value becomes higher.

Furthermore, regarding the distance to the exit and IC, it is evaluated how far away from the current position the high-speed exit (or IC) is. In this case, the shorter the distance from the current location (for example, within 1 km), the lower the index value is because it may be possible to avoid traffic jams by moving from an expressway to a general road, for example. On the other hand, the longer the distance from the current location (for example, 10 km or more), the higher the index value becomes because it is more likely that traffic jams will not be avoided for a long time.

In the radar chart 110, by expressing various information corresponding to these characteristic items as index values, it is possible to easily understand the evaluation content of the traffic congestion situation visually. Furthermore, since the radar chart 110 is displayed on the windshield 102, the driver can visually recognize the radar chart 110 without shifting his or her line of sight as much as possible.

Further, the characteristic items of the radar chart are changed depending on the road type. A radar chart 110A shown in FIG. 4 shows, for example, evaluation details of traffic congestion on general roads such as national highways. In the radar chart 110A of FIG. 4, the time of occurrence of traffic jam, location of accident, distance of traffic jam, distance to station or school, and distance to large shopping mall are selected as characteristic items. The time the traffic jam occurred, the location where the accident occurred, and the traffic jam distance are the same as those described above, so a description thereof will be omitted. Unlike expressways, many facilities such as stations, schools, and large shopping malls are built around general roads such as national highways. For example, during times when there are many users (including pedestrians) of these various facilities, there is a possibility that traffic congestion may occur around the facilities. Therefore, by changing the selected characteristic items according to the road type, it is possible to appropriately evaluate the traffic congestion situation.

The distance to the station or school evaluates how far the school (or station) is from the current location. In this case, the longer the distance from the current location (for example, 2 km or more), the lower the index value will be because the influence of students commuting to and from school on traffic congestion can be suppressed. On the other hand, the shorter the distance from the current location (for example, within 300 meters), the greater the impact on traffic congestion due to traffic restrictions due to school zones, etc. depending on the time of day, and the large number of students commuting to and from school. It gets expensive.

Furthermore, the distance to the large shopping mall is evaluated by evaluating how far away the large shopping mall is from the current location. In this case, the longer the distance from the current location (for example, 2 km or more), the lower the index value because there are fewer cars heading to a large shopping mall. On the other hand, the shorter the distance from the current location (for example, within 500 meters), the higher the index value will be because many cars head to a large shopping mall depending on the time of day.

The radar charts 110 and 110A shown in FIGS. 3 and 4 illustrate examples of characteristic items, and these items may be changed as appropriate. For example, items other than those listed above include the current weather, whether it is commuting time, whether it is the 50th day of driving, and tourist attractions and scenic spots from the current location. These include the distance to the destination, and the complexity of the road traveled (number of turns and degree of curve). In addition, if there is a hot spot (restaurant, amusement park, etc.) near your vehicle that is popular on the Internet or SNS (Social Networking Service), the number of people visiting that spot will increase, leading to traffic jams. is assumed. In that case, the distance to the spot may be evaluated.

Next, an example of processing of the navigation control device will be described. FIG. 5 is a flowchart showing an example of processing in the navigation control device according to the present embodiment. The process shown in FIG. 5 is executed by the navigation control device 20 based on a predetermined control program and data. The navigation control device 20 starts the process shown in FIG. 5 after route guidance to the set destination is started.

The navigation control device 20 acquires travel speed information of the host vehicle during route guidance to the destination (step S101). Specifically, the navigation control device 20 uses the traveling speed information acquisition unit 24 to acquire traveling speed information of the own vehicle while the vehicle is traveling.

The navigation control device 20 determines whether the state where the speed is lower than a predetermined speed continues for a predetermined time or more (step S102). Specifically, the navigation control device 20 determines, based on the evaluation unit 26, that the traveling speed has remained below a predetermined speed (for example, 10 km/h versus the legal speed of 50 km/h) for a predetermined period of time or more (for example, 5 minutes or more). If so, it is determined that a traffic jam is occurring. In this determination, if it is determined that no traffic jam has occurred (step S102; No), the process returns to step S101.

On the other hand, if it is determined that there is no traffic jam (step S102; Yes), the navigation control device 20 acquires the current position of the host vehicle (step S103). Specifically, the position information acquisition unit 22 acquires the current position information of the own vehicle based on the radio wave signal acquired by the GPS reception unit 12.

The navigation control device 20 acquires road information regarding roads included in the route to the destination and the surrounding environment of the roads (step S104). Specifically, the road information acquisition unit 25 receives road traffic information from the VICS reception unit 17.

The navigation control device 20 acquires map information (step S105). Specifically, the map information acquisition unit 23 acquires map information regarding the route from the current location of the host vehicle to the destination. This map information includes information about the type of road the vehicle is traveling on and information about the surrounding environment of the road where the vehicle is currently located.

The navigation control device 20 selects an item corresponding to the road type (step S106). Specifically, the evaluation unit 26 determines the type of road on which the own vehicle is traveling based on the position information and the road type information included in the map information, and selects the characteristic item corresponding to this road type. The characteristic items to be selected are selected according to predefined priorities corresponding to the road type, the time of travel, or the surrounding environment of the road. For example, when the host vehicle is traveling on an expressway, as shown in FIG. Select the distance to the area, the exit, and the distance to the IC.

The navigation control device 20 calculates an index value for each characteristic item (step S107). Specifically, the evaluation unit 26 calculates index values for evaluating the traffic congestion situation for each characteristic item from road traffic information, map information, and the like. The method for calculating the index value is not limited and can be any known method.

The navigation control device 20 displays the radar chart on the windshield 102 (step S108). Specifically, the display control unit 50 displays the evaluation content, which is a combination of index values calculated for each of a plurality of characteristic items, as a radar chart with axes corresponding to each characteristic item, and displays this radar chart on the windshield. do.

The navigation control device 20 determines whether the display end condition is satisfied (step S109). Specifically, the evaluation unit 26 determines whether the traveling speed has increased to a predetermined speed or higher, or whether the driver has instructed to end the display of the radar chart. This is because it is assumed that the traffic jam has been resolved if the traveling speed becomes equal to or higher than the predetermined speed. In this determination, if the display termination condition is not satisfied (step S109; No), the process returns to step S103. Further, if the display termination condition is satisfied (step S109; Yes), the process is terminated.

In the present embodiment, a configuration has been described in which only a radar chart that combines index values calculated for each of a plurality of characteristic items is displayed on the windshield 102. 6 or when a predetermined condition is satisfied, such as when the item with the maximum index value accounts for more than half of all items, the display control unit 50 causes the windshield 102 to The configuration may also be such that an image 120 including a message asking to re-search the route to the destination is displayed. According to this configuration, it is possible to easily re-search a route to the destination even during traffic jams. In this case, the driver can perform voice input through the operation unit 11 by, for example, uttering a predetermined voice command.

Further, in the present embodiment, the windshield 102 has been described as an example of the predetermined area included within the field of view of the driver during driving, but the invention is not limited to this. For example, it is also possible to use a so-called electronic instrument panel that displays various meters such as a speedometer and a revolution counter on a liquid crystal panel arranged on the dashboard of the vehicle. In this case, the above-mentioned radar chart may be displayed in a location that does not require constant display for driving, such as a speedometer on an electronic instrument panel. In addition to the above-mentioned windshield 102 and electronic instrument panel, the radar chart may be displayed on a display unit such as a smartphone or a center console as a predetermined area. With this configuration, for example, a passenger other than the driver can easily visually understand the content of the evaluation of the traffic congestion situation by visually checking the radar chart displayed on the smartphone or the display unit of the center console.

As described above, the navigation control device 20 according to the present embodiment includes a route search unit 30 that searches for a route for the own vehicle to a destination, a position information acquisition unit 22 that acquires position information of the own vehicle, and a A traveling speed information acquisition unit 24 acquires the traveling speed of the vehicle, and when a predetermined time or more has elapsed with the acquired traveling speed being below a predetermined speed, the traveling speed information acquisition unit 24 acquires the traveling speed of the vehicle, and when a predetermined time or more has elapsed with the acquired traveling speed being below a predetermined speed, the road included in the route from the current position of the own vehicle to the destination and the corresponding A road information acquisition unit 25 that acquires information regarding the surrounding environment of the road, an evaluation unit 26 that calculates an index value for evaluating the traffic congestion situation on the road based on the acquired information, and the range of the driver's field of vision while driving. and a display control unit 50 that displays evaluation content that is a combination of index values calculated for each of a plurality of items in a predetermined area included therein. According to this configuration, it is possible to appropriately present evaluation details regarding the road congestion situation to the driver.

In the navigation control device 20 according to the present embodiment, the display control unit 50 displays the evaluation content, which is a combination of index values calculated for each of a plurality of items, in a predetermined area using a radar chart in which axes are associated with each item. Therefore, by displaying the evaluation content of the traffic congestion situation using a radar chart, the driver who is driving can easily visually confirm the evaluation content.

In the navigation control device 20 according to the present embodiment, the predetermined area is provided on the windshield 102, so that the driver can visually recognize the information displayed on the windshield 102 without shifting his/her line of sight as much as possible.

In the navigation control device 20 according to the present embodiment, the display control unit 50 changes the displayed characteristic items depending on the road type of the travel route, so that the traffic congestion situation can be appropriately evaluated.

In the navigation control device 20 according to the present embodiment, when the index values in a plurality of items satisfy a predetermined condition, the display control unit 50 displays an image 120 in a predetermined area asking to re-search the route to the destination. This makes it easy to re-search for a route to your destination even in traffic jams.

Each component of the illustrated navigation control device 20 is functionally conceptual, and does not necessarily have to be physically configured as illustrated. In other words, the specific form of each device is not limited to what is shown in the diagram, and all or part of it may be functionally or physically distributed or integrated into arbitrary units depending on the processing load and usage status of each device. It's okay.

The configuration of the navigation control device 20 is realized by, for example, a program loaded into a memory as software. The above embodiments have been described as functional blocks realized by cooperation of these hardware or software. That is, these functional blocks can be implemented in various forms using only hardware, only software, or a combination thereof.

1 navigation device 15 display section 17 VICS reception section 20 navigation control device 22 position information acquisition section 23 map information acquisition section 24 travel speed information acquisition section 25 road information acquisition section 26 evaluation section 30 route search section 31 route guidance section 50 display control section 100 Dashboard 102 Windshield 110, 110A Radar chart

Claims (5)

a route search unit that searches for a route for the own vehicle to the destination;
a position information acquisition unit that acquires position information of the host vehicle;
a traveling speed information acquisition unit that acquires the traveling speed of the own vehicle;
Road information for acquiring information regarding a road included in the route from the current position of the own vehicle to the destination and the surrounding environment of the road when a predetermined time or more has elapsed with the acquired traveling speed being below a predetermined speed. an acquisition department;
an evaluation unit that calculates an index value for evaluating traffic congestion on the road based on the acquired information regarding the road and the surrounding environment of the road;
a display control unit that displays, in a predetermined area, evaluation content that is a combination of the index values calculated for each of the plurality of items;
A navigation control device comprising: The navigation according to claim 1, wherein the display control unit displays the evaluation content, which is a combination of the index values calculated for each of the plurality of items, in the predetermined area using a radar chart in which axes are made to correspond to each of the items. Control device. The navigation control device according to claim 1 or 2, wherein the predetermined area is provided in at least one of an instrument panel, a windshield, a center console, and a smartphone of a vehicle. The navigation control device according to claim 1 or 2, wherein the display control unit changes the displayed items depending on the road type of the route. 3. If the index values in the plurality of items satisfy a predetermined condition, the display control unit displays an image in the predetermined area asking the user to re-search the route to the destination. Navigation control device as described.

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