JP2020118473A - Route guidance control device, route guidance control method, and program - Google Patents

Abstract

To carry out appropriate guidance for a guide sign.SOLUTION: A route guidance control device includes: a sign information acquisition unit for acquiring guide sign information in a traveling direction of a vehicle; a determination unit for determining a relationship between a place name related to a set destination and a place name of the guide sign information; a biometric information acquisition unit for acquiring biometric information of a passenger of the vehicle for the guide sign information; and a route guidance control unit for guiding the relationship between the guidance sign and the destination when a current position of the vehicle is near a guide sign existing in the direction of travel of the vehicle, the determination unit determines that the place name relating to the destination and the place name of the guide sign information have low relevance, and the biometric information acquisition unit acquires predetermined biometric information of the passenger of the vehicle.SELECTED DRAWING: Figure 1

Description

The present invention relates to a route guidance control device, a route guidance control method, and a program.

There is known a technique for executing guidance for information presented on a guide sign to a user who drives a vehicle.

JP, 2010-085203, A

Even if the place name related to the destination is not written on the guide sign, if the user knows the positional relationship between the place name written on the guide sign and the place name of the destination, the user will display the guide sign. There is a tendency not to watch. However, if the user does not know the positional relationship between the place name written on the guide sign and the place name of the destination, the user tends to pay attention to the guide sign.

The present invention provides a route guidance control device, a route guidance control method, and a program for executing appropriate guidance for a guidance sign.

The route guidance control device of the present invention includes a sign information acquisition unit that acquires guide sign information in a traveling direction of a vehicle, a judgment unit that judges the relevance of a place name relating to a set destination, and a place name of the guide sign information. A biometric information acquisition unit that acquires biometric information of a passenger of the vehicle with respect to the guide sign information; a current position of the vehicle is in the vicinity of a guide sign existing in the traveling direction of the vehicle; When the place name relating to the destination and the place name of the guide sign information are determined to have low relevance, and the biometric information acquisition unit acquires predetermined biometric information of the passenger of the vehicle, the guide sign and A route guidance control unit for guiding the relevance to the destination.

The route guidance control method of the present invention comprises a sign information acquisition step of acquiring guide sign information in the traveling direction of a vehicle, a judgment step of judging the relationship between a place name relating to a set destination and the place name of the guide sign information. And a biometric information acquisition step of acquiring biometric information of an occupant of the vehicle with respect to the guide sign information, and the current position of the vehicle is in the vicinity of the guide sign existing in the traveling direction of the vehicle, and in the determination step. The place name relating to the destination, the place name of the guide sign information is determined to have low relevance, when the predetermined biometric information of the passenger of the vehicle is acquired in the biometric information acquisition step, the guide sign, A route guidance control step of guiding the relevance to the destination.

The program of the present invention includes a sign information acquisition step of acquiring guide sign information in a traveling direction of a vehicle, a judgment step of judging a relevance of a place name relating to a set destination, and a place name of the guide sign information, A biometric information acquisition step of acquiring biometric information of an occupant of the vehicle with respect to the guide sign information, and the current position of the vehicle is in the vicinity of a guide sign existing in the traveling direction of the vehicle, and in the determination step, the purpose If the place name relating to the place and the place name of the guide sign information are determined to have low relevance, and the predetermined biometric information of the passenger of the vehicle is acquired in the biometric information acquisition step, the guide sign and the destination And a route guidance control step for guiding the relationship between the route guidance control device and the computer.

According to the present invention, it is possible to execute appropriate guidance for a guidance sign.

FIG. 1 is a block diagram showing an example of the configuration of the route guidance device according to the first embodiment. FIG. 2 is a schematic diagram for explaining a method of acquiring guide sign information. FIG. 3 is a schematic diagram for explaining a method of acquiring guide sign information. FIG. 4 is a schematic diagram for explaining a method of determining the degree of association between the place name of the destination and the destination guidance information. FIG. 5 is a flowchart showing an example of the flow of processing of the route guidance device according to the first embodiment. FIG. 6 is a flowchart showing an example of the flow of processing of the route guidance device according to the second embodiment. FIG. 7 is a flowchart showing an example of the processing flow of the route guidance device according to the modification of the second embodiment. FIG. 8 is a flowchart showing an example of the processing flow of the route guidance device according to the third embodiment.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the present invention is not limited to this embodiment, and when there are a plurality of embodiments, the present invention includes a combination of the embodiments.

[First embodiment]
The configuration of the route guidance device according to the first embodiment will be described with reference to FIG. FIG. 1 is a block diagram showing the configuration of the route guidance device according to the first embodiment.

The route guidance device 1 is, for example, a device mounted on a vehicle, and is realized by, for example, a navigation device or a configuration of a navigation device and another device. The route guidance device 1 determines the relevance between the place name relating to the destination and the place name displayed on the guide sign. When the place name relating to the destination and the place name displayed on the guide sign have a low relevance, the route guidance device 1 provides the place name of the destination to the driver of the vehicle and the place name displayed on the guide sign. I will show you the relationship with. Hereinafter, the route guidance device 1 will be described as being installed in a vehicle.

As shown in FIG. 1, the route guidance device 1 includes an imaging unit 10, a storage unit 20, a GPS (Global Positioning System) reception unit 30, a user interface 40, a biological information detection unit 50, and a voice output unit 60. And a display unit 70 and a control unit (route guidance control device) 100.

The image capturing unit 10 captures an image around the vehicle. The image capturing unit 10 is arranged so as to face the front of the vehicle (the traveling direction) and captures at least the front of the vehicle. The image capturing unit 10 captures an image of a guide sign such as a traffic guide sign located in front of the vehicle. The imaging unit 10 outputs the captured image data to the sign information acquisition unit 122.

The storage unit 20 records various data such as the map data 21. The map data 21 includes information about guide signs such as traffic signs existing on the road. The storage unit 20 stores, for example, a program for realizing each unit of the control unit 100. The control unit 100 realizes the function of each unit by expanding and executing the program stored in the storage unit 20. The storage unit 20 may be realized by a semiconductor memory device such as a RAM (Random Access Memory), a ROM (Read Only Memory), or a flash memory (Flash Memory), or a storage device such as a hard disk, a solid state drive, or an optical disk. You can The storage unit 20 may be composed of a plurality of different memories or the like. The map data 21 may be acquired from an external server or the like via a communication unit (not shown).

The GPS receiving unit 30 includes a GPS receiving circuit, a GPS receiving antenna, and the like, and receives GPS signals. The GPS reception unit 30 outputs the received GPS signal to the current position information acquisition unit 120.

The user interface 40 receives various operations on the route guidance device 1. Various operations include an operation of setting a destination. The user interface 40 outputs the received destination to the destination setting unit 121. The user interface 40 can be realized by, for example, a physical switch or a touch panel provided on the display unit 70.

The biometric information detection unit 50 detects biometric information of an occupant of the vehicle. The biometric information detection unit 50 detects, for example, biometric information of the driver when driving the vehicle. The biometric information detection unit 50 detects, for example, the biometric information of the driver when the guide sign information is confirmed. The biometric information detection unit 50 outputs the detected biometric information to the biometric information acquisition unit 124.

In the present embodiment, the biological information detection unit 50 is, for example, a line-of-sight sensor that detects the direction of the driver's line of sight. In this case, the biological information detection unit 50 is arranged so as to face the driver. The biometric information detection unit 50 includes, for example, an infrared light emitting device and an infrared light camera, irradiates the driver's face with infrared light, and captures the captured data captured by the infrared light camera. To 124. Further, as another example of the biometric information detection unit 50, a visible light camera that captures the driver's face is provided, and the captured image data is output to the biometric information acquisition unit 124.

In the present embodiment, the biological information detection unit 50 is described as a line-of-sight sensor, but this is an example and does not limit the present invention. The biological information detection unit 50 may be configured by a microphone that detects voice in the vehicle, a pulse sensor that detects a pulse, a body temperature sensor that detects a body temperature, and a respiration sensor that detects a respiration rate.

The voice output unit 60 outputs a voice to a passenger of the vehicle. The voice output unit 60 outputs a route guidance voice to, for example, a passenger of the vehicle. The voice output unit 60 outputs, for example, the relationship between the place name written on the guide sign and the destination by voice. The audio output unit 60 is composed of, for example, an audio speaker mounted on a vehicle.

The display unit 70 displays various images. The display unit 70 displays, for example, a map around the vehicle based on the map data 21. The display unit 70 displays, for example, route information from the current position to the destination together with a map. The display unit 70 is a display including, for example, a liquid crystal display (LCD: Liquid Crystal Display) or an organic EL (Organic Electro-Luminescence) display.

The control unit 100 includes a current position information acquisition unit 120, a destination setting unit 121, a sign information acquisition unit 122, a determination unit 123, a biometric information acquisition unit 124, a route guidance control unit 125, and a voice guidance control unit. 126 and a display control unit 127. The respective units included in the control unit 100 are connected to each other via a bus 110. The control unit 100 can be realized by an electronic circuit including a CPU (Central Processing Unit), for example.

The current position information acquisition unit 120 receives a GPS signal from the GPS reception unit 30. The current position information acquisition unit 120 calculates the current position information of the vehicle based on the GPS signal. The current position information acquisition unit 120 outputs the current position information to the destination setting unit 121, the sign information acquisition unit 122, and the route guidance control unit 125.

The destination setting unit 121 receives the destination information regarding the destination set by the user from the user interface 40. The destination setting unit 121 sets a travel route from the current position to the destination based on the current position information and the map data 21, for example. The destination setting unit 121 outputs, for example, information regarding a travel route from the current position to the destination to the sign information acquisition unit 122 and the route guidance control unit 125.

The destination setting unit 121 may generate a table in which the set destination is associated with the name of a related place associated with the destination. The related place name is, for example, a place name such as a destination prefecture, city, town, or ward. The related place name may be a place name, a building name, or the like that at least partially includes the same name as the destination. In this case, for example, when the destination is “Makuhari Messe”, the related place name is “Makuhari”. The destination setting unit 121 may store the generated table in the storage unit 20 or may output it to the determination unit 123.

The sign information acquisition unit 122 acquires the guide sign information described in the guide signs around the vehicle. The sign information acquisition unit 122 acquires at least guide sign information in the traveling direction of the vehicle. The sign information acquisition unit 122 acquires the guide sign information based on, for example, the image data of the guide sign taken by the imaging unit 10. The sign information acquisition unit 122 acquires guide sign information, for example, based on the travel route from the current position to the destination and the map data 21. The sign information acquisition unit 122 outputs the acquired guide sign information to the determination unit 123.

An example of a method in which the sign information acquisition unit 122 acquires the guide sign information based on the shooting data will be described with reference to FIGS. 2 and 3. 2 and 3 are schematic diagrams for explaining an example of a method in which the sign information acquisition unit 122 acquires the destination guide cover information based on the shooting data.

FIG. 2 shows shooting data 200 of the guide sign taken by the imaging unit 10. The sign information acquisition unit 122 executes character recognition processing on the captured data 200. A well-known method may be used for the character recognition processing. The sign information acquisition unit 122 detects “Okudo” from the first area 210 and detects “Kasai” from the second area 220 by performing character recognition processing on the captured data 200. To do. That is, the sign information acquisition unit 122 recognizes that the left direction of the intersection is the back door direction by recognizing the character and the arrow described on the left side within the range recognized as the guide sign from the photographing data 200. Similarly, by recognizing the character and the arrow described on the right side within the range recognized as the guide sign, it is recognized that the right direction of the intersection is the Kasai direction.

In FIG. 3, the image data 200A of the guide sign imaged by the image capturing unit 10 is shown. The sign information acquisition unit 122 may perform image recognition processing on the captured data 200A in addition to character recognition processing. A known method may be used for the image recognition processing. The sign information acquisition unit 122 detects the image of the airplane from the image area 211A of the first area 210A by performing the character recognition processing and the image recognition processing on the captured data 200A, and from the character area 212A "Haneda Airport". (Haneda Airport)" is detected. The sign information acquisition unit 122 detects “Kamata” from the second area 220A by performing the image recognition process and the character recognition process on the captured data 200A. That is, the sign information acquisition unit 122 recognizes that the left direction of the intersection is the Haneda Airport direction by recognizing the character and the arrow described on the left side within the range recognized as the guide sign from the image data 200A. Similarly, by recognizing the character and the arrow described on the right side within the range recognized as the guide sign, it is recognized that the right direction is the Kamata direction. The image recognition process for the captured data 200A is an example, and does not limit the present invention. For example, the sign information acquisition unit 122 recognizes an icon of a map symbol, an icon indicating a specific facility or place, and the like by performing image recognition processing on the captured data.

Referring back to FIG. The determination unit 123 determines the relevance between the place name of the destination set by the destination setting unit 121 and the place name of the guide sign information acquired by the sign information acquisition unit 122. The determining unit 123 determines that the relevance is low when there is no matching portion between the place name regarding the destination and the place name of the guide sign information, for example. The determination unit 123 may determine the relevance between the place name related to the destination and the place name of the guide sign information, for example, based on a table in which the destination is associated with the related place name of the destination. Further, the determining unit 123 may determine the relevance between the place name of the destination and the place name existing on the guide route to the destination set in advance, for example.

An example of a method of determining the relevance between the place name related to the destination and the place name of the guide sign information based on the table in which the destination is associated with the related place name of the destination will be described with reference to FIG. FIG. 4 is a schematic diagram showing an example of a table in which destinations and associated place names of destinations are associated with each other.

FIG. 4 shows an example in which Makuhari Messe is set as the destination. As shown in FIG. 4, in the table 300, "Chiba", "Makuhari", etc. are associated with the Makuhari Messe as related place names. Makuhari Messe may be associated with related place names such as “Mihama Ward” and “Nakase”. In this embodiment, the number of related place names associated with the destination is not particularly limited.

A method of determining the relationship between the Makuhari Messe set as the destination here and the place name of the destination guidance information acquired from the shooting data 200 shown in FIG. 2 based on the table 300 shown in FIG. 4 will be described. ..

The determination unit 123 refers to the table 300 and determines whether or not Okudo and Kasai acquired from the image data 200 are included in the table 300. The determination unit 123 determines that a place name that is not associated with the table 300 has low relevance. Therefore, the determination unit 123 determines that Okudo and Kasai have low relevance to Makuhari Messe. The determination unit 123 outputs the determination result to the route guidance control unit 125.

Next, a method of determining the relevance to the destination guidance information obtained from the photographing data 200A shown in FIG. 3 when Haneda Airport is set as the destination will be described.

The determination unit 123 may determine the relevance between the image included in the captured data 200A and the destination, not limited to the character. For example, an image of an airplane is included in the image area 211A of the captured data 200A. In this case, the determination unit 123 determines that the Haneda Airport is highly relevant to the image of the airplane. That is, the determination unit 123 determines that the relevance is high when an image related to the destination is included. The image related to the destination is, for example, an image of a map symbol icon or an icon of a facility or place of the destination.

The biometric information acquisition unit 124 acquires biometric information of a vehicle occupant from the biometric information detection unit 50. The biometric information acquisition unit 124 acquires biometric information of the occupant of the vehicle when the occupant of the vehicle visually recognizes the guide sign. The biometric information acquisition unit 124 determines, based on the acquired biometric information, whether or not the occupant of the vehicle recalls the destination from the place name of the guide sign.

The biometric information acquisition unit 124 acquires, for example, the direction of the line of sight of the driver of the vehicle from the biometric information detection unit 50. The biometric information acquisition unit 124 acquires that the user is gazing in a specific direction based on the acquired direction of the line of sight. The biometric information acquisition unit 124 determines, for example, that the occupant keeps the line of sight in the direction of the guide sign for a predetermined time (for example, 2 seconds) or more. The biometric information acquisition unit 124 determines that, for example, when there is a guide sign in the traveling direction and the line of sight is directed upward in the traveling direction, the line of sight is directed to the guide sign. In this case, the biometric information acquisition unit 124 determines that the passenger of the vehicle cannot recall the destination from the place name of the guide sign. The biometric information acquisition unit 124 outputs to the route guidance control unit 125 a determination result as to whether or not the passenger of the vehicle can recall the destination from the place name of the guide sign.

After the occupant of the vehicle visually recognizes the guide sign, the biometric information acquisition unit 124 determines whether the occupant of the vehicle can recall the destination from the place name of the guide sign based on the biometric information other than the direction of the line of sight. You may judge. The biological information acquisition unit 124 can recall the destination based on, for example, the voice detected by the microphone, the pulse detected by the pulse sensor, the body temperature detected by the body temperature sensor, and the respiration rate detected by the respiration sensor. It may be determined whether or not there is. In this case, the biometric information acquisition unit 124 determines whether or not the destination can be recalled, for example, based on changes in voice, pulse, body temperature, respiration rate, etc. before and after the occupant of the vehicle visually recognizes the guide sign. You may.

The route guidance control unit 125 executes guidance of a travel route from the current position set by the destination setting unit 121 to the set destination. The route guidance control unit 125 outputs a voice from the voice output unit 60 by outputting a control signal to the voice guidance control unit 126 to execute the guidance of the traveling route. The route guidance control unit 125 outputs a control signal to the display control unit 127 to display a map or a guidance sign on the display unit 70, and guides the travel route.

The route guidance control unit 125 determines that the current position of the vehicle is in the vicinity of the guide sign existing in the traveling direction of the vehicle, and the determination unit 123 determines that the place name regarding the destination and the place name of the guide sign information have low relevance. Suppose you receive the results. In this case, the route guidance control unit 125 guides the relationship between the place name of the guide sign and the destination when the biometric information acquisition unit 124 acquires the predetermined biometric information of the passenger of the vehicle. The relevance guide is a guide that enables the passenger to recognize the relevance between the place name of the guide sign and the destination. In other words, the relevance guide is a guide for explaining the positional relationship on the map or the positional relationship between the place name of the guide sign and the destination. For example, in FIG. 2, it is assumed that Makuhari Messe is set as the destination. In this case, the route guidance control unit 125 outputs a control signal to the voice guidance control unit 126, and outputs related guidance such as “Makuhari Messe can go via Kasai area” from the voice output unit 60.

The route guidance control unit 125 determines whether the current position of the vehicle is near a guidance sign existing in the traveling direction of the vehicle, based on the result of the sign information acquisition unit 122 recognizing the guidance sign information. For example, when the guide sign recognized by the sign information acquisition unit 122 is located above the image forming the image data 200, the recognized guide sign exists in the traveling direction of the vehicle and the vehicle guides. It can be judged that it is located below the sign.

It is assumed that the route guidance control unit 125 receives a determination result from the determination unit 123 that the place name relating to the destination and the place name existing on the guide route to the preset destination have low relevance. In this case, the route guidance control unit 125 guides the relationship between the place name existing on the guide route and the destination.

For example, when the biometric information acquisition unit 124 acquires that the occupant's line of sight of the vehicle is facing the guide sign, the route guidance control unit 125 guides the relationship between the place name of the guide sign and the destination. For example, when the Makuhari Messe is set as the destination, the route guidance control unit 125 confirms that the passenger of the vehicle is gazing at the guidance sign corresponding to the shooting data 200 shown in FIG. 2 for, for example, 2 seconds. Suppose you have acquired. In this case, the route guidance control unit 125 outputs a control signal to the voice guidance control unit 126, and outputs related guidance such as “Makuhari Messe can go via Kasai area” from the voice output unit 60.

The voice guidance control unit 126 outputs a voice signal for outputting a voice to the voice output unit 60 according to the control signal from the route guidance control unit 125. The voice guidance control unit 126 outputs, for example, a control signal for outputting route guidance from the current position to the destination to the voice output unit 60. The voice guidance control unit 126 outputs to the voice output unit 60, for example, a control signal for outputting related guidance for the guidance sign.

The display control unit 127 outputs a control signal for displaying an image to the display unit 70 according to the control signal from the route guidance control unit 125. The display control unit 127 outputs, to the display unit 70, a control signal for displaying various images based on the map data 21 and the current position acquired by the current position information acquisition unit 120. The display control unit 127 outputs, for example, a control signal for displaying a map around the vehicle to the display unit 70. The display control unit 127 outputs to the display unit 70, for example, a control signal for displaying a guide sign existing in the traveling direction of the vehicle.

The processing of the control unit 100 according to the first embodiment will be described with reference to FIG. FIG. 5 is a flowchart showing an example of the processing flow of the control unit 100 according to the first embodiment.

First, the control unit 100 determines whether or not there is a guide sign in the traveling direction of the vehicle (step S101).

When there is a guide sign in the traveling direction (Yes in step S101), the control unit 100 proceeds to step S102. When there is no guide sign in the traveling direction (No in step S101), the control unit 100 proceeds to step S106.

In step S102, the control unit 100 determines whether the place name described in the guide sign and the place name of the destination have low relevance (step S102).

When the place name described in the guide sign and the place name of the destination have low relevance (Yes in step S102), the control unit 100 proceeds to step S103. When the place name described in the guide sign and the place name of the destination are not low in relevance (No in step S102), the control unit 100 proceeds to step S106.

In step S103, the control unit 100 determines whether or not the occupant of the vehicle recalls the direction of the destination (step S103).

When the passenger of the vehicle does not recall the direction of the destination (No in step S103), the control unit 100 proceeds to step S104. When the occupant of the vehicle is recalling the target direction (Yes in step S103), the process proceeds to step S106.

In step S104, the control unit 100 guides the relevance between the place name written on the guide sign and the place name of the destination (step S104). Then, the control unit 100 proceeds to step S105.

In step S105, the control unit 100 determines whether the route guidance is finished (step S105).

When the route guidance is completed (Yes in step S105), the control unit 100 ends the process of FIG. When the route guidance is not completed (No in step S105), the control unit 100 proceeds to step S101.

Further, in step S106, the control unit 100 executes normal route guidance without guiding the relevance between the place name written on the guide sign and the place name of the destination (step S106). Then, the control unit 100 proceeds to step S105.

As described above, in the first embodiment, when the passenger of the vehicle does not recognize the direction of the destination from the place name written on the guide sign, the place name written on the guide sign and the place name of the destination You can guide the relationship with. As a result, the passenger of the vehicle can properly recognize the direction of the destination.

[Second embodiment]
The processing of the control unit according to the second embodiment will be described with reference to FIG. FIG. 6 is a flowchart showing an example of the flow of processing of the control unit according to the second embodiment.

In the first embodiment, based on the biometric information of the occupant of the vehicle when the occupant of the vehicle visually recognizes the place name written on the guide sign on the road, it is determined whether or not to execute the related voice guidance. It was In the second embodiment, it is determined whether or not to perform the related voice guidance based on the biometric information of the occupant of the vehicle when the occupant of the vehicle visually recognizes the guide sign displayed on the display unit.

First, the control unit 100 determines whether or not a guide sign is displayed on the display unit 70 (step S201).

When the guide sign is displayed on the display unit 70 (Yes in step S201), the control unit 100 proceeds to step S202. When the guide sign is not displayed on the display unit 70 (No in step S201), the control unit 100 proceeds to step S206.

Steps S202 to S206 are the same as steps S102 to S106 shown in FIG. 5, and therefore description thereof will be omitted.

As described above, in the second embodiment, when the passenger of the vehicle does not recognize the direction of the destination from the place name written on the guide sign displayed on the display unit, the place name written on the guide sign is displayed. And the relationship between the destination and the place name of the destination. As a result, the passenger of the vehicle can properly recognize the direction of the destination.

[Modification of Second Embodiment]
The processing of the control unit 100 according to the modified example of the second embodiment will be described with reference to FIG. 7. FIG. 7 is a flowchart showing an example of the processing flow of the control unit 100 according to the modified example of the second embodiment.

In the second embodiment, a guide sign is displayed on the display unit 70. In the modification of the second embodiment, when it is determined that the passenger of the vehicle does not recall the destination from the place name of the guide sign displayed on the display unit 70, the guide sign displayed on the display unit 70. In, the place name of the destination is overlaid and displayed in the direction of the destination.

First, the control unit 100 determines whether or not a guide sign is displayed on the display unit 70 (step S301).

When the guide sign is displayed on the display unit 70 (Yes in step S301), the control unit 100 proceeds to step S302. When the guide sign is not displayed on the display unit 70 (No in step S301), the control unit 100 proceeds to step S305.

In step S302, the control unit 100 determines whether or not the occupant of the vehicle recalls the direction of the destination from the place name of the guide sign (step S302).

When the passenger of the vehicle does not recall the direction of the destination (No in step S302), the control unit 100 proceeds to step S303. When the passenger of the vehicle is remembering the direction of the destination (Yes in step S302), the control unit 100 proceeds to step S305.

In step S303, the control unit 100 superimposes and displays the name of the destination in the direction of the destination on the guide sign displayed on the display unit 70 (step S303). Then, the control unit 100 proceeds to step S304.

Since step S304 and step S305 are the same as step S105 and step S106 shown in FIG. 5, respectively, description thereof will be omitted.

As described above, in the modified example of the second embodiment, when the passenger of the vehicle does not recall the direction of the destination from the place name written on the guide sign, the displayed guide sign indicates the destination. The name of the destination can be displayed in a superimposed manner in the direction. As a result, the vehicle occupant can recognize the direction of the destination more appropriately.

[Third embodiment]
Processing of the control unit according to the third embodiment will be described with reference to FIG. 8. FIG. 8 is a flowchart showing an example of the flow of processing of the control unit according to the third embodiment.

In the first embodiment and the second embodiment, when the passenger of the vehicle cannot recall the direction of the destination from the place name written on the guide sign, the place name written on the guide sign and the destination Introduce the relationship with the place name. In the third embodiment, when the passenger of the vehicle reacts to the place name written on the guide sign in a direction different from the destination, the vehicle can be guided in an appropriate direction.

First, the control unit 100 determines whether or not there is a guide sign in the traveling direction of the vehicle (step S401).

When there is a guide sign in the traveling direction (Yes in step S401), the control unit 100 proceeds to step S402. When there is no guidance sign in the traveling direction (No in step S401), the control unit 100 proceeds to step S406.

In step S402, the control unit 100 determines whether or not the passenger of the vehicle has responded to the place name written on the guide sign (step S402). The control unit 100 determines, for example, by the biometric information acquisition unit 124 whether or not the place name described in the guide sign is visually recognized. The control unit 100 determines whether or not the place name described in the guide sign is uttered by the biometric information acquisition unit 124, for example.

When the passenger of the vehicle responds to the place name written on the guide sign (Yes in step S402), the control unit 100 proceeds to step S403. When the passenger of the vehicle does not react to the place name described in the guide sign (No in step S402), the control unit 100 proceeds to step S406.

In step S403, the control unit 100 determines whether the place name reacted by the passenger of the vehicle is the direction of the destination (step S403). The control unit 100 determines, for example, by the biometric information acquisition unit 124 whether or not the passenger of the vehicle visually recognizes the place name in the direction of the destination on the guide sign. The control unit 100 determines, for example, by the biometric information acquisition unit 124 whether or not the occupant of the vehicle has uttered a place name in the direction of the destination among the place names described in the guide sign. The biometric information acquisition unit 124 outputs the determination result of the place name reacted by the passenger of the vehicle to the route guidance control unit 125.

When the place name reacted by the passenger of the vehicle is not the direction of the destination (No in step S403), the control unit 100 proceeds to step S404. When the place name reacted by the passenger of the vehicle is the direction of the destination (Yes in step S403), the control unit 100 proceeds to step S406.

In step S404, the control unit 100 guides the passengers of the vehicle in the direction of the destination (step S404). For example, it is assumed that a passenger of the vehicle visually recognizes "Okudo" in the guide sign corresponding to the image data 200 shown in FIG. 2 in a state where the destination is Makuhari Messe. In this case, the control unit 100 executes voice guidance from the voice output unit 60, such as "Makuhari Messe is not for Okudo" or "Makuhari Messe is for Kasai". Specifically, in the control unit 100, the route guidance control unit 125 guides the place name of the destination local area based on the determination result of the place name that the passenger of the vehicle has received from the biometric information acquisition unit 124. The control signal is output to the voice guidance control unit 126.

Since step S405 and step S406 are the same as step S105 and step S106 shown in FIG. 5, respectively, description thereof will be omitted.

As described above, in the third embodiment, route guidance can be executed according to the passenger's reaction to the place name written on the guide sign. As a result, the passengers of the vehicle can recognize the direction of the destination more appropriately.

Although the embodiments of the present invention have been described above, the embodiments are not limited by the contents of these embodiments. Further, the components described above include those that can be easily conceived by those skilled in the art, those that are substantially the same, and those within the so-called equivalent range. Furthermore, the components described above can be combined appropriately. Furthermore, various omissions, substitutions, or changes of the constituent elements can be made without departing from the scope of the above-described embodiment.

1 Route Guidance Device 10 Imaging Unit 20 Storage Unit 21 Map Data 30 GPS Reception Unit 40 User Interface 50 Biometric Information Detection Unit 60 Voice Output Unit 70 Display Unit 100 Control Unit (Route Guidance Control Device)
110 Bus 120 Current position information acquisition unit 121 Destination setting unit 122 Sign information acquisition unit 123 Judgment unit 124 Biometric information acquisition unit 125 Route guidance control unit 126 Voice guidance control unit 127 Display control unit 200, 200A Imaging data 210, 210A First Area 211A Image area 212A Character area 220, 220A Second area 300 Table

Claims (7)

A sign information acquisition unit that acquires guide sign information in the traveling direction of the vehicle,
A place name related to the set destination, and a determination unit that determines the relationship between the place name of the guide sign information,
A biometric information acquisition unit for acquiring biometric information of a passenger of the vehicle for the guide sign information;
The current position of the vehicle is in the vicinity of a guide sign existing in the traveling direction of the vehicle, the determination unit determines that the place name of the destination, the place name of the guide sign information is low relevance, When the biometric information acquisition unit acquires predetermined biometric information of a passenger of the vehicle, a route guidance control unit that guides the association between the guide sign and the destination,
A route guidance control device. If the place name relating to the destination and the place name of the guide sign information do not match, the determining unit determines that the relevance is low,
The route guidance control device according to claim 1. The route guidance control unit, when the determination unit determines that the place name related to the destination and the place name existing on the preset guide route to the destination have low relevance, the guidance Guiding the relationship between the name of a place existing on the route and the destination,
The route guidance control device according to claim 1. The biometric information acquisition unit acquires information about the line-of-sight direction of a passenger of the vehicle,
The route guidance control unit guides the association between the guide sign and the destination when the line of sight of the passenger of the vehicle obtains the line of sight of the passenger of the vehicle in the direction of the guide sign,
The route guidance control device according to any one of claims 1 to 3. The route guidance control unit is configured such that the current position of the vehicle is located below a guide sign existing in the traveling direction of the vehicle, and the line of sight of a passenger of the vehicle faces upward, which is the direction of the guide sign. If there is, guide the relationship between the guide sign and the destination,
The route guidance control device according to claim 4. A sign information acquisition step of acquiring guide sign information in the traveling direction of the vehicle,
A place name relating to the set destination, and a determining step of determining the relationship between the place name of the guide sign information,
A biometric information acquisition step of acquiring biometric information of an occupant of the vehicle with respect to the guide sign information;
The current position of the vehicle is in the vicinity of a guide sign existing in the traveling direction of the vehicle, and in the determining step, it is determined that the place name relating to the destination and the place name of the guide sign information have low relevance, A route guidance control step for guiding the relevance between the guide sign and the destination when the predetermined biometric information of the passenger of the vehicle is acquired in the biometric information acquisition step,
And a route guidance control method. A sign information acquisition step of acquiring guide sign information in the traveling direction of the vehicle,
A place name relating to the set destination, and a determining step of determining the relationship between the place name of the guide sign information,
A biometric information acquisition step of acquiring biometric information of an occupant of the vehicle with respect to the guide sign information;
The current position of the vehicle is in the vicinity of a guide sign existing in the traveling direction of the vehicle, and in the determining step, it is determined that the place name relating to the destination and the place name of the guide sign information have low relevance, A route guidance control step of guiding the relevance between the guide sign and the destination when the predetermined biometric information of the passenger of the vehicle is acquired in the biometric information acquisition step,
A program for causing a computer that operates as a route guidance control device to execute.

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