JP7188267B2 - NAVIGATION DEVICE, PROCESSING METHOD THEREOF, AND PROGRAM - Google Patents

Description

The present invention relates to a navigation device, its processing method, and program.

A navigation device is known that creates a route for taking shelter from the rain on the way to a destination (see, for example, Patent Document 1).

WO2014/020994

However, in the above-described navigation device, there is a possibility that the shelter location may not be appropriate depending on the weather information such as rainfall time.

SUMMARY OF THE INVENTION The present invention has been made to solve such problems, and a main object of the present invention is to provide a navigation device, a processing method thereof, and a program that can guide a user to an optimal evacuation site according to weather information. and

One aspect of the present invention for achieving the above object is
a weather information acquisition unit that acquires weather information on a route to a destination;
a shelter setting unit that sorts the weather information acquired by the weather information acquisition unit into levels and sets shelters associated with the levels;
a guide unit that searches the map information for the evacuation area set by the evacuation area setting unit and guides the user to the searched evacuation area;
A navigation device characterized by comprising:
One aspect of the present invention for achieving the above object is
a step of obtaining weather information on a route to a destination;
a step of classifying the acquired weather information into levels, and setting shelter areas associated with the levels;
a step of searching for the set evacuation area in the map information and guiding the user to the searched evacuation area;
A processing method for a navigation device characterized by comprising:
One aspect of the present invention for achieving the above object is
A process of acquiring weather information on the route to the destination;
a process of classifying the obtained weather information into levels and setting evacuation sites associated with the levels;
a process of searching for the set evacuation area in the map information and guiding the user to the searched evacuation area;
may be a navigation device program characterized by causing a computer to execute

ADVANTAGE OF THE INVENTION According to this invention, the navigation apparatus which can guide a user to the optimal evacuation place according to weather information, its processing method, and a program can be provided.

1 is a block diagram showing a schematic system configuration of a navigation device according to Embodiment 1 of the present invention; FIG. 4 is a flow chart showing a processing method of the navigation device according to Embodiment 1 of the present invention; 8 is a flow chart showing a processing method of the navigation device according to Embodiment 2 of the present invention; FIG. 3 is a block diagram showing a schematic system configuration of a navigation device according to Embodiment 3 of the present invention; FIG. 11 is a block diagram showing a schematic system configuration of a navigation device according to Embodiment 6 of the present invention; FIG. 11 is a block diagram showing a schematic system configuration of a navigation device according to Embodiment 11 of the present invention;

Embodiment 1
Embodiments of the present invention will be described below with reference to the drawings. For example, a user who is riding a two-wheeled vehicle such as a motorbike or a bicycle or walking may encounter bad weather such as rain or snow. In such a case, the navigation device according to the first embodiment of the present invention can guide the user to a temporary shelter from bad weather, such as a shelter from the rain.

A navigation device has a navigation function that calculates a route from a current position to a destination on map information based on GPS (Global Positioning System) signals, for example, and guides a user along the route. The map information is prestored in a memory or the like, for example.

A navigation device is mounted, for example, on a smart helmet worn by a user riding a motorbike or a bicycle. The navigation device may be installed in a smartphone or a portable navigation device possessed by a pedestrian or the like as a navigation application or a navigation function.

FIG. 1 is a block diagram showing a schematic system configuration of a navigation device according to Embodiment 1 of the present invention. A navigation device 1 according to the first embodiment includes a weather information acquisition unit 2 that acquires weather information, a shelter setting unit 3 that sets a shelter, and a guidance unit 4 that guides the user to the shelter. there is

The navigation device 1 includes, for example, a CPU (Central Processing Unit) that performs arithmetic processing and the like, a memory composed of a ROM (Read Only Memory) and a RAM (Random Access Memory) in which arithmetic programs and the like executed by the CPU are stored, and an external device. The hardware configuration is centered around a microcomputer comprising an interface unit (I/F) for inputting and outputting signals. The CPU, memory, and interface are interconnected via a data bus or the like.

The weather information acquisition unit 2 acquires weather information on the route to the set destination. The weather information includes, for example, rainfall amount, rainfall time, rainfall amount per unit time, snowfall amount, snowfall time, snowfall amount per unit time, amount of ultraviolet rays, wind speed, thunder, tornado, and other weather-related information.

The weather information acquisition unit 2 is connected to a communication network or the like. The weather information acquisition unit 2 acquires weather information from, for example, a rain cloud radar, a weather radar, a meteorological satellite, a data server of the Japan Meteorological Agency, a raindrop sensor, a leak sensor, a barometer, a thermometer, a hygrometer, an ultraviolet sensor, and the like. The weather information acquisition section 2 outputs the acquired weather information to the shelter setting section 3 .

The shelter setting unit 3 sorts the weather information acquired by the weather information acquisition unit 2 into levels, and sets shelters associated with the levels. Level correspondence information in which levels of weather information are associated with shelter locations is stored in advance in the shelter location setting unit. The user can arbitrarily change the setting of this level correspondence information via an input device or the like. Based on the level correspondence information, the shelter setting unit 3, for example, classifies the rainfall time of the weather information acquired by the weather information acquisition unit 2 into levels, and sets the shelter corresponding to the rainfall time.

Here, an example of level correspondence information will be described. For example, a short rainfall time (about 30 minutes) less than or equal to the first predetermined time is associated with stores such as convenience stores and parking areas where the user can temporarily take shelter from the rain. This is because when the rainfall time is short, which is equal to or less than the first predetermined time, a store or the like where the user can take shelter from the rain for that short time is suitable as a place of refuge.

A restaurant or fast food where a user can take shelter from the rain for a certain period of time while sitting down and eating and drinking during a medium rainfall period that is longer than the first predetermined period and shorter than the second predetermined period (approximately 1 to 3 hours). and other restaurants are associated with it. This is because, when the rainfall time is longer than the first predetermined time and less than or equal to the second predetermined time, a restaurant where the user can take shelter from the rain during the middle time is suitable as a shelter.

A long rainfall time (approximately 3 hours or more) longer than the second predetermined time is associated with a stay facility such as a hot spring facility or an accommodation facility where the user can stay and take shelter from the rain for a long time. This is because, when the rainfall time is longer than the second predetermined time, a staying facility where the user can take shelter from the rain for that long time is suitable as a place of refuge.

For example, optimal times obtained experimentally in advance are set in the shelter setting unit 3 as the first and second predetermined times. The user can arbitrarily change the setting of the first and second predetermined times in the shelter setting section 3 via an input device or the like. Note that the correspondence between the rainfall time and the evacuation place is an example, and the present invention is not limited to this.

The amount of rainfall and shelter can also be associated with each other in the same manner as the rainfall time and shelter. For example, a small rainfall amount equal to or less than the first predetermined amount is associated with a store where the user can temporarily take shelter from the rain. A medium amount of rainfall that is greater than the first predetermined amount and less than or equal to the second predetermined amount is associated with a restaurant where the user can take shelter from the rain for a certain period of time while sitting down to eat and drink. A large amount of rainfall, which is greater than the second predetermined amount, is associated with a lodging facility where the user can stay and take shelter from the rain for a long period of time.

Furthermore, the snowfall time or the amount of snowfall and the shelter location can be associated with each other in the same manner as the rainfall time and the amount of rainfall.

When the shelter setting unit 3 determines that the rainfall time is less than or equal to the first predetermined time based on the weather information acquired by the weather information acquisition unit 2, it sets the store as the shelter. If the shelter setting unit 3 determines that the rainfall time is longer than the first predetermined time and less than or equal to the second predetermined time based on the weather information acquired by the weather information acquiring unit 2, the shelter setting unit 3 selects the restaurant as the shelter. set. When the shelter setting unit 3 determines that the rainfall time is longer than the second predetermined time based on the weather information acquired by the weather information acquiring unit 2, it sets the stay facility as the shelter. As a result, it is possible to set the optimum shelter location according to the rainfall time. The shelter setting part 3 outputs the set shelter to the guidance part 4 .

The guidance unit 4 searches for the evacuation place set by the evacuation place setting unit 3 on the map information around the user's current position on the route. The guide unit 4 guides the user to the searched shelter. When the refuge setting unit 3 sets, for example, a convenience store as a refuge, the guide unit 4 searches for convenience stores near the user's current position on the route and guides the user to the searched convenience stores.

The guide unit 4 may search for the nearest evacuation site from the user's current position on the route on the map information, and guide the user to the searched evacuation site. Further, the guide unit 4 may search for a shelter within a predetermined distance from the user's current position on the route on the map information, and guide the user to the searched shelter.

The guidance unit 4 is configured as a display that displays the searched route to the evacuation site on a map image and guides the user to the evacuation site, for example. The guidance unit 4 may guide the user on the route to the evacuation site by voice.

FIG. 2 is a flow chart showing a processing method of the navigation device according to Embodiment 1 of the present invention. Note that the process shown in FIG. 2 may be repeatedly executed at predetermined time intervals.

The weather information acquisition unit 2 acquires weather information at the user's current position on the route, and outputs the acquired weather information to the shelter setting unit 3 (step S201).

The shelter setting unit 3 classifies the weather information acquired by the weather information acquisition unit 2 into levels, sets shelters associated with the levels, and outputs the set shelters to the guidance unit 4 (step S202). ).

The guidance unit 4 searches for the evacuation place set by the evacuation place setting unit 3 in the vicinity of the user's current position on the route on the map information (step S203). The guidance unit 4 guides the user to the searched shelter (step S204).

As described above, the navigation device 1 according to the first embodiment includes the weather information acquisition unit 2 that acquires weather information at the user's current position on the route to the destination, and the weather information level acquired by the weather information acquisition unit 2. A shelter setting unit 3 that sets a shelter corresponding to the level, a shelter set by the shelter setting unit 3 in the map information is searched, and the retrieved shelter is sent to the user. and a guide portion 4 that guides against. Accordingly, it is possible to classify the obtained weather information into levels, set an optimum evacuation area associated with the level, and guide the user to the set optimum evacuation area. That is, it is possible to guide the user to an optimum evacuation site according to the level of weather information.

Embodiment 2
In Embodiment 2 of the present invention, the shelter setting unit 3 classifies the rainfall amount per unit time of the weather information acquired by the weather information acquisition unit 2 into levels, and sets the shelter corresponding to the level. .

Based on the weather information acquired by the weather information acquisition unit 2, the shelter setting unit 3 determines that the amount of rainfall per unit time is less than a predetermined amount and that the rain is light. A first sheltering place within a first predetermined distance from is set as a sheltering place. For example, the amount of rain that makes it difficult for the user to move to the evacuation area is set in the evacuation area setting unit 3 as the predetermined amount.

In this way, in the case of light rain, since the user does not get very wet while moving from the current position on the route to the shelter, the user shelters in the first rain shelter extended to the first predetermined distance far from the current position. Can be set as location.

Based on the weather information acquired by the weather information acquisition unit 2, the shelter setting unit 3 determines that the amount of rainfall per unit time is greater than a predetermined amount and that the rain is heavy. A second shelter from the rain, which is close to the current position of the above user and within a second predetermined distance from the current position, is set as a shelter.

In the shelter setting unit 3, the first predetermined distance>the second predetermined distance is set. For example, the distance that the user can move in a short period of time is set in the refuge setting section 3 as the second predetermined distance. A second predetermined distance, which is longer than the first predetermined distance and allows the user to move for a certain amount of time, is set in the refuge location setting unit 3 .

In this way, in the case of heavy rain, the user will get very wet while moving from the current position on the route to the shelter. is set as

The shelter setting part 3 outputs the set shelter to the guidance part 4 . The guidance unit 4 searches for the evacuation place set by the evacuation place setting unit 3 on the map information around the user's current position on the route. The guidance unit 4 guides the user to the searched shelter.

When the shelter setting unit 3 sets the first shelter place within the first predetermined distance from the current position of the user on the route, the guide unit 4 selects the first shelter within the first predetermined distance from the current position on the map information. 1 shelter place is searched, and the user is guided to the searched first shelter place as a refuge place.

When the shelter setting unit 3 sets a second shelter place within a second predetermined distance from the user's current position on the route, the guidance unit 4 selects a second shelter within the second predetermined distance from the current position on the map information. 2. A shelter from the rain is searched, and the user is guided to the retrieved second shelter from the rain as a refuge.

The shelter setting unit 3 classifies the snowfall amount per unit time of the weather information acquired by the weather information acquisition unit 2 by the same method as the rainfall amount per unit time described above, and the shelter corresponding to the level is determined. You can set the location.

For example, a small snowfall amount equal to or less than the first predetermined amount is associated with a store where the user can temporarily take shelter. A middle amount of snowfall that is greater than the first predetermined amount and less than or equal to the second predetermined amount is associated with a restaurant where the user can evacuate for a certain period of time while sitting down and eating. A large amount of snowfall that is larger than the second predetermined amount is associated with a stay facility where the user can stay and take refuge slowly for a long time.

If the shelter setting unit 3 determines that the amount of rainfall per unit time is larger than a predetermined amount based on the weather information acquired by the weather information acquisition unit 2, It is also possible to set an evacuation place located farther from the route on the route closer to the user's current position than the position closer to the route of the user. This is because it is assumed that setting a position farther from the route on the route closer to the user's current position as the evacuation location will be a better evacuation location.

As described above, the shelter setting unit 3 divides the rainfall amount per unit time into two levels, and sets the shelter corresponding to each level, but is not limited to this. The shelter setting unit 3 may divide the rainfall amount per unit time into three or more levels, and set the shelter corresponding to each level.

FIG. 3 is a flow chart showing a processing method of the navigation device according to Embodiment 2 of the present invention. Note that the process shown in FIG. 3 may be repeatedly executed at predetermined time intervals.

The weather information acquisition unit 2 acquires weather information on the route to the set destination, and outputs the acquired weather information to the shelter setting unit 3 (step S301).

Based on the weather information acquired by the weather information acquisition section 2, the shelter setting section 3 determines whether or not the amount of rainfall per unit time is equal to or less than a predetermined amount (step S302).

When the shelter setting unit 3 determines that the amount of rainfall per unit time is less than or equal to the predetermined amount and that the rain is light (YES in step S302), the shelter setting unit 3 determines that the rain falls within a first predetermined distance from the user's current position on the route. A place to take shelter from the rain is set as an evacuation place (step S303).

When the shelter setting unit 3 determines that the amount of rainfall per unit time is greater than the predetermined amount and that the rain is heavy (NO in step S302), the shelter setting unit 3 determines that the second A place to take shelter from the rain is set as an evacuation place (step S304).

The guidance unit 4 searches for the evacuation place set by the evacuation place setting unit 3 in the vicinity of the user's current position on the route on the map information (step S305). The guidance unit 4 guides the user to the searched shelter (step S306). In addition, in the second embodiment, the same reference numerals are assigned to the same parts as in the first embodiment, and detailed description thereof will be omitted.

As described above, according to the second embodiment, it is possible to classify rain levels according to the strength of the rain, set an optimum evacuation area associated with the level, and guide the user to the set optimum evacuation area.

Embodiment 3
FIG. 4 is a block diagram showing a schematic system configuration of a navigation device according to Embodiment 3 of the present invention. The navigation device 30 according to the third embodiment further includes a route information acquisition unit 5 that acquires evacuation route information indicating the state of the evacuation route from the user's current position on the route to the evacuation location.

Based on the evacuation route information acquired by the route information acquisition unit 5, the guidance unit 4 searches for the evacuation location set by the evacuation location setting unit 3 on the map information. The guidance unit 4 guides the user to the searched shelter.

In this manner, by searching for a shelter location in consideration of the state of the shelter route to the shelter location and providing guidance to the user, the user can move to the shelter location in a more optimal state.

The route information acquisition unit 5 can acquire evacuation route information from, for example, map information and weather information. The evacuation route information includes, for example, the gradient of the evacuation route (average gradient, maximum gradient, number of slopes, etc.), the number of turns on the evacuation route, the degree of slipperiness of the road surface on the evacuation route, and crosswinds on the evacuation route. It includes information such as the strength of the wind, the strength of the headwind on the evacuation route, the traffic volume on the evacuation route, and the degree of danger of the evacuation route (crime rate, etc.).

The route information acquisition unit 5 can estimate the degree of slipperiness of the road surface based on the state of the road surface, the rainfall time and the snowfall time on the road surface, and the like. For example, when the road surface is gravel or dirt, the route information acquisition unit 5 estimates the degree of slipperiness of the road surface to be high. When the rainfall time on the road surface is long, the route information acquisition unit 5 estimates the degree of slipperiness of the road surface to be high.

Based on the evacuation route information acquired by the route information acquisition unit 5, the guidance unit 4, on the map information, for example, finds the Search for places. Based on the evacuation route information acquired by the route information acquisition unit 5, the guiding unit 4 searches for an evacuation area where the number of turns of the evacuation route is equal to or less than a predetermined value, for example, on the map information.

Based on the evacuation route information acquired by the route information acquisition unit 5, the guiding unit 4 searches for an evacuation area where the number of turns of the evacuation route is equal to or less than a predetermined value, for example, on the map information. Based on the evacuation route information acquired by the route information acquisition unit 5, the guidance unit 4 searches for an evacuation location on the map information, for example, where the degree of slipperiness of the road surface of the evacuation route is equal to or less than a predetermined value. do.

Based on the evacuation route information acquired by the route information acquisition unit 5, the guidance unit 4 searches for an evacuation location on the map information, for example, where the wind speed of the crosswind on the evacuation route is equal to or less than a predetermined value. Based on the evacuation route information acquired by the route information acquisition unit 5, the guidance unit 4 searches for an evacuation location on the map information, for example, where the wind speed of the head wind on the evacuation route is equal to or less than a predetermined value.

The guidance unit 4 guides the user to the shelter location searched as described above. In the third embodiment, the same parts as those in the first and second embodiments are denoted by the same reference numerals, and detailed description thereof will be omitted.

As described above, according to the third embodiment, the slope of the evacuation route, the number of turns of the evacuation route, the degree of slipperiness of the road surface of the evacuation route, the strength of the crosswind on the evacuation route, the strength of the headwind, etc. To search for a shelter place considering the state and to guide the user. This allows the user to move to the evacuation site in a more optimal state.

Embodiment 4
In Embodiment 4 of the present invention, when a plurality of evacuation sites are retrieved, the guidance unit 4 guides the user to the evacuation site closest to the user's current position on the route among the searched evacuation site candidates. . For example, the guidance unit 4 searches for a plurality of evacuation sites within a predetermined distance from the user's current position on the route on the map information. The guidance unit 4 guides the user to the nearest evacuation place from the current position among the retrieved evacuation places. This allows the user to evacuate to the nearest evacuation location from the current position.

When a plurality of evacuation sites are retrieved, the guide unit 4 may guide the user to evacuation sites within a predetermined distance from the user's current position on the route among the retrieved evacuation site candidates. As a result, the user can evacuate to an evacuation area within a certain distance from the current position.

When a plurality of evacuation sites are retrieved, the guide unit 4 may display the retrieved evacuation site candidates on a touch panel screen or the like to the user in order of proximity from the user's current position on the route. good. The user selects one shelter from among the displayed shelters in consideration of the distance. The guidance unit 4 guides the user to the evacuation site selected by the user. As a result, the user can be guided to the evacuation area in consideration of not only the distance to the evacuation area but also the user's preferences.

In the fourth embodiment, the same reference numerals are assigned to the same parts as in the first to third embodiments, and detailed description thereof will be omitted.

Embodiment 5
In Embodiment 5 of the present invention, when the guidance time zone is the morning time zone (for example, 7:00 to 8:00) and the noon time zone (for example, 12:00 to 13:00), the guidance unit 4 sets the restaurant as a place of refuge. , and if the time zone to be guided is the night time zone (for example, from 19:00), it may be guided to the accommodation facility as an evacuation area.

For example, it is assumed that a store and a restaurant are associated with a short rainfall time equal to or less than the first predetermined time as a shelter place. When the shelter setting unit 3 determines that the rainfall time is less than or equal to the first predetermined time based on the weather information acquired by the weather information acquisition unit 2, it sets the store and the restaurant as the shelter.

Normally, the guidance unit 4 searches for shops and restaurants as the evacuation areas set by the evacuation area setting unit 3 around the user's current position on the route on the map information. However, at this time, if the guidance unit 4 determines that the current time is in the morning time zone, it preferentially searches for a restaurant and guides the user to the searched restaurant as a place of refuge. In addition, the guidance part 4 may search again for a store when a restaurant cannot be searched.

Also, for example, it is assumed that a restaurant and accommodation facility are associated with a rainfall time longer than the second predetermined time. When the shelter setting unit 3 determines that the rainfall time is longer than the second predetermined time based on the weather information acquired by the weather information acquisition unit 2, the shelter setting unit 3 sets the restaurant and the accommodation facility as the shelter.

Normally, the guidance unit 4 searches for restaurants and accommodation facilities as the evacuation areas set by the evacuation area setting unit 3 in the vicinity of the user's current position on the route on the map information. However, at this time, if the guide unit 4 determines that the current time is in the night time zone, it preferentially searches for accommodation facilities, and guides the user to the searched accommodation facilities as a place of refuge. In addition, the guidance part 4 may search again for restaurants when the accommodation facility cannot be searched.

In the fifth embodiment, the same reference numerals are assigned to the same parts as in the first to fourth embodiments, and detailed description thereof will be omitted.

As described above, according to the fifth embodiment, it is possible to guide the user to the optimum evacuation place according to the time slot to be guided.

Embodiment 6
FIG. 5 is a block diagram showing a schematic system configuration of a navigation device according to Embodiment 6 of the present invention. The navigation device 60 according to the sixth embodiment further includes a storage unit 6 that stores the evacuation sites previously guided by the guidance unit 4 . The storage unit 6 is configured by, for example, a memory. The guidance unit 4 guides the user to the nearest evacuation place from the user's current position on the route among the evacuation places stored in the storage unit 6 . Since this eliminates the need for map information search processing, the speed of the processing can be increased, and the user can be quickly guided to the evacuation site.

For example, the navigation device 60 guides a plurality of users to evacuation areas, or guides the same user to evacuation areas a plurality of times. be done.

The guidance unit 4 searches for the evacuation location set by the evacuation location setting unit 3 from among the evacuation locations stored in the storage unit 6 on the map information. The guide unit 4 guides the user to the searched shelter.

The guidance unit 4 guides the user to the nearest evacuation location from the user's current position on the route among the plurality of evacuation locations stored in the storage unit 6 . The guidance unit 4 may guide the user to a place of refuge within a predetermined distance from the user's current position on the route, among the plurality of places of refuge stored in the storage unit 6 .

In Embodiment 6, the same parts as those in Embodiments 1 to 5 are denoted by the same reference numerals, and detailed description thereof will be omitted.

As described above, according to the sixth embodiment, it is possible to guide the user to the evacuation area in a short time by reducing the map information search processing and speeding up the processing.

Embodiment 7
In Embodiment 7 of the present invention, the guidance section 4 may not guide the user to a place of refuge that takes more than the third predetermined time from the user's current position on the route.

For example, the guiding unit 4 searches for the evacuation area set by the evacuation area setting unit 3 on the map information. The guidance unit 4 searches for an evacuation route from the user's current position on the route to the evacuation location. At this time, if the guidance unit 4 determines that the time required for the searched evacuation route is equal to or longer than the third predetermined time, it does not guide the user to the evacuation location.

This is because it can be determined that the travel burden on the user is large when the travel time to the shelter is longer than the third predetermined time. For example, the travel time estimated to impose a heavy travel burden on the user is set in the guide unit 4 as the third predetermined time. As a result, when it takes a long time to move to the shelter, the movement can be suppressed and the burden of movement on the user can be reduced.

Note that the guiding unit 4 may notify the user that the time required to reach the evacuation site will be longer than the third predetermined time. If the user wishes to be guided to the shelter in response to the notification from the guide section 4, the guide section 4 may guide the user to the shelter.

For example, the guide unit 4 displays on the touch panel display screen that the time required to reach the evacuation site is longer than the third predetermined time. When the user instructs the button of "execute evacuation place guidance" on the display screen, the guiding unit 4 guides the user to the evacuation place according to the instruction.

If a predetermined destination is set for the route, the guidance unit 4 does not have to guide the user to the evacuation area. Predetermined destinations are destinations to which the user is believed to be rushing, such as, for example, train stations, bus stops, schools, places of work, and the like. As a result, it is possible to guide the evacuation place in consideration of the user's destination.

A predetermined destination is set in the guide section 4 in advance. The user can arbitrarily change the setting of the predetermined destination set in the guidance unit 4 via an input device or the like. Note that the guidance unit 4 may notify the user whether or not guidance to the evacuation site is required. If the user wishes to be guided to the shelter in response to the notification from the guide section 4, the guide section 4 may guide the user to the shelter.

In Embodiment 7, the same parts as those in Embodiments 1 to 6 are denoted by the same reference numerals, and detailed description thereof will be omitted.

Embodiment 8
In the eighth embodiment of the present invention, the evacuation place setting unit 3 classifies the UV dose level of the weather information acquired by the weather information acquisition unit 2, and sets the evacuation place corresponding to the level.

Based on the weather information acquired by the weather information acquisition unit 2, the shelter setting unit 3 determines that the amount of ultraviolet rays (UV index, etc.) is less than a predetermined value and that the ultraviolet rays are strong. A first shaded place within a first predetermined distance from the position is set as a refuge place. For example, the amount of ultraviolet light that causes a burden on the user when moving is set in the refuge setting unit 3 as a predetermined value.

In this way, when the ultraviolet rays are weak, the user is not exposed to ultraviolet rays much while moving from the current position on the route to the evacuation area. can be set as a shelter.

Based on the weather information acquired by the weather information acquisition unit 2, the shelter setting unit 3 determines that the amount of ultraviolet rays is greater than a predetermined value and that the ultraviolet rays are strong. A second shaded place within a second predetermined distance from the current position near the current position of is set as a shelter place. In the shelter setting unit 3, the first predetermined distance>the second predetermined distance is set.

In this way, when the ultraviolet rays are strong, the user will be exposed to strong ultraviolet rays while moving from the current position on the route to the place of refuge. Set as a shelter.

The shelter setting part 3 outputs the set shelter to the guidance part 4 . The guidance unit 4 searches for the evacuation place set by the evacuation place setting unit 3 on the map information around the user's current position on the route. The guidance unit 4 guides the user to the searched shelter.

When the shelter setting unit 3 sets the first shaded place within the first predetermined distance from the user's current position on the route, the guidance unit 4 selects the first shaded place within the first predetermined distance from the current position on the map information. A one-day shaded place is searched, and the user is guided to the retrieved first shaded place as a place of refuge.

When the shelter setting unit 3 sets the second shaded place within the second predetermined distance from the user's current position on the route, the guide unit 4 selects the second shaded place within the second predetermined distance from the current position on the map information. A second shaded place is retrieved, and the user is guided to the retrieved second shaded place as a shelter.

Although the shelter setting unit 3 divides the amount of ultraviolet rays into two levels and sets shelters corresponding to the levels, the present invention is not limited to this. The shelter setting unit 3 may divide the amount of ultraviolet rays into three or more levels and set the shelter corresponding to each level.

In the eighth embodiment, the same reference numerals are assigned to the same parts as in the first to seventh embodiments, and detailed description thereof will be omitted.

As described above, according to the eighth embodiment, it is possible to set an optimum evacuation area according to the amount of ultraviolet rays, and guide the user to the set evacuation area.

Embodiment 9
In the ninth embodiment of the present invention, the shelter setting unit 3 classifies the level of thunder information in the weather information acquired by the weather information acquisition unit 2, and sets the shelter corresponding to the level. good. The lightning information is, for example, the degree of lightning activity that indicates the possibility of occurrence of lightning. The weather information acquisition unit 2 can acquire lightning activity information from the data server of the Japan Meteorological Agency.

When the shelter setting unit 3 determines, based on the weather information acquired by the weather information acquisition unit 2, that the degree of lightning activity is equal to or less than a predetermined value (for example, 1) and that the possibility of lightning occurring is low. , set a shelter within a first predetermined distance from the user's current position on the route. It should be noted that, for example, a value that is considered to have a low probability of occurrence of lightning is set in the shelter setting unit 3 as the predetermined value. Further, for example, a distance that the user can move over a certain amount of time is set in the refuge setting unit 3 as the first predetermined distance.

In this way, when the possibility of lightning occurring is low, the user can safely move from the current position on the route to the evacuation area, so the evacuation area should be set at a first predetermined distance far from the current position. can be done.

Based on the weather information acquired by the weather information acquiring unit 2, the shelter setting unit 3 determines that the degree of lightning activity is higher than a predetermined value and that there is a high possibility that lightning will occur. A refuge place within a second predetermined distance closer to the current position of is set.

In the shelter setting unit 3, the first predetermined distance>the second predetermined distance is set. For example, the distance that the user can move in a short period of time is set in the refuge setting section 3 as the second predetermined distance.

In this way, when the possibility of thunder is high, the user needs to quickly move from the current position on the route to the evacuation area. set.

Although the shelter setting unit 3 divides the degree of lightning activity into two levels and sets the shelter corresponding to each level, it is not limited to this. The shelter setting unit 3 may divide the degree of lightning activity into three or more levels and set the shelter corresponding to each level.

The shelter setting part 3 outputs the set shelter to the guidance part 4 . The guidance unit 4 searches for the evacuation place set by the evacuation place setting unit 3 on the map information around the user's current position on the route. The guidance unit 4 guides the user to the searched shelter.

In the ninth embodiment, the same reference numerals are assigned to the same parts as in the first to eighth embodiments, and detailed description thereof will be omitted.

As described above, according to the ninth embodiment, it is possible to set a safer and optimum evacuation area in consideration of the occurrence of lightning, and guide the user.

Embodiment 10
In the tenth embodiment of the present invention, the shelter setting unit 3 may classify the level of tornado information in the weather information acquired by the weather information acquisition unit 2, and set the shelter corresponding to the level. good. Tornado information is, for example, a tornado occurrence probability that indicates the possibility of a tornado occurring. The weather information acquisition unit 2 can acquire information on the probability of occurrence of a tornado from a data server of the Japan Meteorological Agency or the like.

If the shelter setting unit 3 determines that the tornado occurrence probability is a predetermined value (for example, 1) or less based on the weather information acquired by the weather information acquisition unit 2 and the possibility of a tornado occurring is low, A shelter within a first predetermined distance from the user's current position on the route is set. It should be noted that, for example, a value considered to have a low possibility of a tornado occurring is set in the evacuation place setting unit 3 as the predetermined value. Further, for example, a distance that the user can move over a certain amount of time is set in the refuge setting section 3 as the first predetermined distance.

In this way, when the possibility of a tornado occurring is low, the user can safely move from the current position on the route to the evacuation area, so the evacuation area should be set at a first predetermined distance far from the current position. can be done.

Based on the weather information acquired by the weather information acquisition unit 2, the shelter setting unit 3 determines that the probability of occurrence of a tornado is higher than a predetermined value and that there is a high possibility that a tornado will occur. A refuge place within a second predetermined distance closer to the current position is set.

In the shelter setting unit 3, the first predetermined distance>the second predetermined distance is set. For example, the distance that the user can move in a short period of time is set in the refuge setting section 3 as the second predetermined distance.

Thus, when the possibility of a tornado occurring is high, the user needs to quickly move from the current position on the route to the evacuation site. Therefore, the evacuation area narrowed down to within the second predetermined distance closer to the current position is set.

The shelter setting unit 3 divides the probability of tornado occurrence into two levels and sets the shelter corresponding to each level, but it is not limited to this. The shelter setting unit 3 may divide the probability of occurrence of a tornado into three or more levels and set a shelter corresponding to each level.

The shelter setting unit 3 outputs the set shelter to the guidance unit 4 . The guidance unit 4 searches for the evacuation place set by the evacuation place setting unit 3 in the vicinity of the user's current location on the route on the map information. The guidance unit 4 guides the user to the searched shelter.

In the tenth embodiment, the same parts as in the first to ninth embodiments are denoted by the same reference numerals, and detailed description thereof will be omitted.

As described above, according to the tenth embodiment, it is possible to set a safer and optimum evacuation area in consideration of the occurrence of a tornado and guide the user.

Embodiment 11
FIG. 6 is a block diagram showing a schematic system configuration of a navigation device according to Embodiment 11 of the present invention. In the eleventh embodiment of the present invention, when the guide unit 4 determines that it will take a fourth predetermined time or more from the route to the evacuation location, it requests the vehicle allocation server 7 to allocate a vehicle from the user's current position on the route to the evacuation location. . For example, the time during which it is difficult for the user to move on foot or the like is set in the guidance unit 4 as the fourth predetermined time.

The vehicle allocation server 7 is a server that allocates pre-registered vehicles to the pick-up position of the user requesting the pick-up. The vehicle allocation server 7 and the guide unit 4 are connected via a communication network 71 or the like.

For example, the guiding unit 4 searches for the evacuation area set by the evacuation area setting unit 3 on the map information. The guidance unit 4 searches for an evacuation route from the user's current position on the route to the evacuation location. At this time, if the guidance unit 4 determines that the time required for the retrieved evacuation route is equal to or longer than the fourth predetermined time, the guide unit 4 instructs the vehicle allocation server 7 to allocate a vehicle to the pick-up position, which is the user's current position on the route. to the vehicle allocation server 7. The vehicle allocation server 7 allocates a pre-registered vehicle to the pick-up position in response to a vehicle allocation request signal from the guide unit 4 .

In this way, when the travel time to the evacuation site is longer than the fourth predetermined time, it becomes difficult for the user to travel by walking or the like. On the other hand, the vehicle allocation server 7 allocates the vehicle to the pick-up position where the user waits on the route in response to the vehicle allocation request signal from the guidance unit 4 . Thereby, the user can easily move to the evacuation area by the dispatched vehicle.

Note that the guidance unit 4 may notify the user that the vehicle allocation server 7 is requesting vehicle allocation. If the user wishes to allocate a vehicle in response to the notification from the guidance unit 4 , the guidance unit 4 may request the vehicle allocation server 7 to allocate a vehicle.

For example, the guide unit 4 displays a request for dispatching a vehicle to the dispatch server 7 on the touch panel display screen. When the user instructs the button "execute vehicle allocation request" on the display screen, the guide unit 4 transmits a vehicle allocation request signal to the vehicle allocation server 7 in response to the instruction.

In the eleventh embodiment, the same parts as in the first to tenth embodiments are denoted by the same reference numerals, and detailed description thereof will be omitted.

As described above, according to the eleventh embodiment, when it is difficult for the user to move because it takes a long time to move to the evacuation site, it is possible to reduce the user's transportation burden by using vehicle allocation.
The pre-registered vehicle is not limited to the vehicle itself, and may be a taxi company. Also, the system of the eleventh embodiment functions as a dispatch system.

Embodiment 12
In the twelfth embodiment of the present invention, the guidance unit 4 may search for a shelter according to the destination of the route and guide the user to the searched shelter. As a result, the user can be guided to the most suitable place of refuge according to the user's destination.

For example, when a sightseeing spot such as Nikko Toshogu Shrine is set as the destination of the route, the guiding unit 4 may search for an entertainment facility such as a bowling alley or a hot spring as a refuge. The guide unit 4 guides the user to the found entertainment facility. Since the user is heading to a tourist spot, it can be estimated that the user has a strong preference for entertainment. Therefore, by guiding an amusement facility as a place of refuge, the user can be guided to a place of refuge that suits the user's preference.

For example, it is assumed that a restaurant and accommodation facility are associated with a rainfall time longer than the second predetermined time. When the shelter setting unit 3 determines that the rainfall time is longer than the second predetermined time based on the weather information acquired by the weather information acquisition unit 2, the shelter setting unit 3 sets the restaurant and the accommodation facility as the shelter.

Normally, the guidance unit 4 searches for restaurants and accommodation facilities as the evacuation areas set by the evacuation area setting unit 3 in the vicinity of the user's current position on the route on the map information. However, at this time, if the guide unit 4 determines that a tourist spot is set as the destination of the route, it searches for an amusement facility where you can eat and drink or stay as a refuge. The guidance unit 4 guides the user to the searched amusement facility as a place of refuge. In this way, by actively retrieving and guiding the evacuation area according to the user's destination, the user can be guided to the evacuation area more suited to the user's current preferences while considering the level of weather information.

In addition, when the guide unit 4 cannot search for accommodation facilities, it may search again for restaurants and accommodation facilities other than entertainment facilities.

In the twelfth embodiment, the same parts as in the first to eleventh embodiments are denoted by the same reference numerals, and detailed description thereof will be omitted.

Embodiment 13
In the above-described embodiment, when the user is riding a two-wheeled vehicle such as a motorbike or a bicycle, or is walking, and encounters bad weather, the navigation device 1 moves the user from the current position on the route to the evacuation place. is guiding

On the other hand, in the thirteenth embodiment of the present invention, when it is predicted that the user will be hit by bad weather on the route on which the user is going to run or walk, the navigation device 1 avoids the position on the route where the weather is bad. The user is guided to the designated evacuation area. As a result, the user can be guided to a place to temporarily evacuate from bad weather on the route on which the user is about to run or walk.

The weather information acquisition unit 2 acquires weather information on the route to the destination, and outputs the acquired weather information to the shelter setting unit 3 . The shelter setting unit 3 classifies the weather information on the route acquired by the weather information acquiring unit 2 into levels, sets the shelter corresponding to the level, and outputs the set shelter to the guidance unit 4.

The guidance unit 4 searches for the evacuation area set by the evacuation area setting unit 3 around the route on the map information. The guidance unit 4 sets an evacuation route from the route to the searched evacuation location, and guides the user to the evacuation location.

Note that the weather information changes from moment to moment, so the predicted weather may differ from the actual weather. On the other hand, the weather information acquisition unit 2 acquires weather information on the route to the destination at predetermined time intervals, and outputs the acquired weather information to the shelter setting unit 3 . The shelter setting unit 3 sets the shelter using the latest weather information. Therefore, as described above, even if the predicted weather differs from the actual weather, the shelter setting unit 3 can set the optimum shelter using the latest weather information.

While several embodiments of the invention have been described, these embodiments have been presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be embodied in various other forms, and various omissions, replacements, and modifications can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the scope of the invention described in the claims and equivalents thereof.

The present invention can also be realized, for example, by causing a CPU to execute a computer program for the processes shown in FIGS.

The program can be stored and delivered to the computer using various types of non-transitory computer readable media. Non-transitory computer-readable media include various types of tangible storage media. Examples of non-transitory computer-readable media include magnetic recording media (eg, flexible discs, magnetic tapes, hard disk drives), magneto-optical recording media (eg, magneto-optical discs), CD-ROMs (Read Only Memory), CD-Rs, CD-R/W, semiconductor memory (eg, mask ROM, PROM (Programmable ROM), EPROM (Erasable PROM), flash ROM, RAM (random access memory)).

The program may be provided to the computer by various types of transitory computer readable medium. Examples of transitory computer-readable media include electrical signals, optical signals, and electromagnetic waves. Transitory computer-readable media can deliver the program to the computer via wired channels, such as wires and optical fibers, or wireless channels.

1 Navigation device 2 Weather information acquisition unit 3 Retreat setting unit 4 Guidance unit 5 Route information acquisition unit 6 Storage unit 7 Vehicle allocation server 30 Navigation device 60 Navigation device 71 Communication network

Claims (9)

a weather information acquisition unit that acquires weather information on a route to a destination;
a shelter setting unit that sorts the weather information acquired by the weather information acquisition unit into levels and sets shelters associated with the levels;
a guide unit that searches the map information for the evacuation area set by the evacuation area setting unit and guides the user to the searched evacuation area;
with
The evacuation place setting unit
Based on the weather information acquired by the weather information acquisition unit,
if it is determined that the rainfall time is equal to or less than the first predetermined time, setting at least a store as the shelter place;
when it is determined that the rainfall time is longer than the first predetermined time and is equal to or less than the second predetermined time, setting at least a restaurant as the shelter place;
If it is determined that the rainfall time is longer than the second predetermined time, setting at least a stay facility as the shelter place ;
A navigation device characterized by: a weather information acquisition unit that acquires weather information on a route to a destination;
a shelter setting unit that sorts the weather information acquired by the weather information acquisition unit into levels and sets shelters associated with the levels;
a guide unit that searches the map information for the evacuation area set by the evacuation area setting unit and guides the user to the searched evacuation area;
with
The evacuation place setting unit
Based on the weather information acquired by the weather information acquisition unit,
If it is determined that the amount of rainfall per unit time is equal to or less than a predetermined amount, setting a first shelter location within a first predetermined distance from the current location or the user's current location on the route as the evacuation location;
When it is determined that the amount of rainfall per unit time is greater than a predetermined amount, a second rainfall location within a second predetermined distance from the user's current position on the route is closer to the user's current position on the route than the first shelter place. 2 setting a shelter place as the evacuation place;
A navigation device characterized by: further comprising a route information acquisition unit that acquires evacuation route information indicating the state of the evacuation route from the route to the evacuation location;
The guide unit searches for the evacuation location based on the evacuation route information acquired by the route information acquisition unit, and guides the user to the searched evacuation location.
3. A navigation device according to claim 1 or 2 , characterized in that: The evacuation route information includes the slope of the evacuation route, the number of turns on the evacuation route, the degree of slipperiness of the road surface on the evacuation route, the strength of the crosswind on the evacuation route, the strength of the headwind on the evacuation route, and the traffic volume on the evacuation route. , and at least one of the hazards of the evacuation route,
4. The navigation device according to claim 3 , characterized in that: The guide section
When the time zone to be guided is the morning time zone or the afternoon time zone, at least a restaurant is searched as the evacuation place,
If the time zone to be guided is the night time zone, searching for the accommodation facility as the evacuation place;
5. A navigation device according to any one of claims 1 to 4 , characterized in that: When determining that it takes a fourth predetermined time or more from the route to the evacuation location, the guide unit requests a vehicle allocation server to allocate a vehicle from the route to the evacuation location.
6. A navigation device according to any one of claims 1 to 5 , characterized in that: The weather information includes at least one of precipitation amount, precipitation time, lightning strike, ultraviolet dose, and tornado ;
7. A navigation device according to any one of claims 1 to 6 , characterized in that: a step of obtaining weather information on a route to a destination;
a step of classifying the acquired weather information into levels, and setting shelter areas associated with the levels;
a step of searching for the set evacuation area in the map information and guiding the user to the searched evacuation area;
including
Based on the acquired weather information,
if it is determined that the rainfall time is equal to or less than the first predetermined time, setting at least a store as the shelter place;
when it is determined that the rainfall time is longer than the first predetermined time and is equal to or less than the second predetermined time, setting at least a restaurant as the shelter place;
If it is determined that the rainfall time is longer than the second predetermined time, setting at least a stay facility as the shelter place ;
A processing method for a navigation device, characterized by: A process of acquiring weather information on the route to the destination;
a process of classifying the obtained weather information into levels and setting evacuation sites associated with the levels;
a process of searching for the set evacuation area in the map information and guiding the user to the searched evacuation area;
on the computer, and
Based on the acquired weather information,
if it is determined that the rainfall time is equal to or less than the first predetermined time, setting at least a store as the shelter place;
when it is determined that the rainfall time is longer than the first predetermined time and is equal to or less than the second predetermined time, setting at least a restaurant as the shelter place;
If it is determined that the rainfall time is longer than the second predetermined time, setting at least a stay facility as the shelter place ;
A navigation device program characterized by:

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