JP6771273B2 - Evacuation support method using navigation device and navigation device - Google Patents

Description

The present invention relates to a navigation device capable of transmitting a map including an evacuation site to a mobile terminal in the event of an emergency due to a natural disaster such as a natural disaster, and an evacuation support method using the navigation device.

Conventionally, a technique of displaying a map including a point designated by a user and transferring the map to an external device has been disclosed (see, for example, Patent Document 1).

Further, a technique for transferring a route to a destination, map data around the route, or text information indicating the route to the destination to the mobile phone is disclosed depending on whether or not the mobile phone has a GPS function. (See, for example, Patent Document 2).

Japanese Unexamined Patent Publication No. 2006-3664 Japanese Unexamined Patent Publication No. 2007-333711

When an emergency occurs due to a natural disaster or other natural disaster while riding in a vehicle and the infrastructure of communication equipment such as mobile phones is disturbed, it may be necessary to evacuate to a nearby evacuation site away from the vehicle. is expected. In such cases, even if you encounter an emergency in a strange land, you need to know the way to the evacuation site.

Patent Documents 1 and 2 assume that the user knows the place he / she wants to go (that is, the destination is clear). Therefore, the evacuation site cannot be known in a strange land and cannot be set as a destination. In addition, even if an evacuation site is set as a destination and a route search to the destination is performed, there is a possibility that the route cannot be followed because the road is cut off. As described above, Patent Documents 1 and 2 do not assume that the route to the evacuation site is notified in the event of an emergency.

The present invention has been made to solve such a problem, and provides an evacuation support method using a navigation device and a navigation device capable of notifying the route to an evacuation site in the event of an emergency due to a natural disaster. With the goal.

In order to solve the above problems, the navigation device according to the present invention is an evacuation map image generation which is a navigation device installed on a moving body and generates an evacuation map image which is a map image including an evacuation site at the time of a natural disaster. Unit, an image format conversion unit that converts the evacuation map image generated by the evacuation map image generation unit into a predetermined image format, and a transmission unit that transmits the evacuation map image converted by the image format conversion unit to the mobile terminal. The evacuation map image generation unit generates an evacuation map image including a plurality of evacuation sites at an emergency instruction timing, and the transmission unit transmits an evacuation map image including a plurality of evacuation sites to a mobile terminal. The number of evacuation sites included in the evacuation map image can be set by the user at the timing of emergency instruction, and the evacuation map image generator has a predetermined minimum number of evacuation sites within a predetermined geographical range. If is not included, the predetermined minimum number of evacuation sites is expanded to include the predetermined minimum number of evacuation sites, and the predetermined minimum number of evacuation sites is within the predetermined geographical range. If it is included, the evacuation map image generator does not change the predetermined geographical range, and the evacuation map image generator has the number of evacuation sites set by the user within the expanded geographical range or the predetermined geographical range. When the number of evacuation sites is larger than the number of evacuation sites included in the range, an evacuation map image including the number of evacuation sites included in the expanded geographical range or a predetermined geographical range is generated .

Further, the evacuation support method using the navigation device according to the present invention is an evacuation support method using a navigation device installed on a moving body, and (a) an evacuation map image which is a map image including an evacuation site in the event of a natural disaster by the navigation device. (B) The step of converting the evacuation map image generated in step (a) by the navigation device into a predetermined image format, and (c) the step of converting in step (b) by the navigation device. A step of transmitting an evacuation map image to a mobile terminal is provided, the step (a) generates an evacuation map image including a plurality of evacuation sites at a timing emergency instructed by the navigation device, and the step (c) is a plurality of steps. An evacuation map image including an evacuation site is transmitted to a mobile terminal, the number of evacuation sites included in the evacuation map image can be set by the user at an emergency instruction timing, and the step (a) is a predetermined geography. If the target area does not include a predetermined minimum number of evacuation sites, the predetermined geographical range is expanded to include a predetermined minimum number of evacuation sites, and the predetermined geographical area is included. If the range includes a predetermined minimum number of evacuation sites, the predetermined geographical range is not changed, and step (a) is performed after the number of evacuation sites set by the user has been expanded. Number of evacuation within the expanded geographic range or within the predetermined geographic range, where there are more evacuation sites within the geographic range or within the predetermined geographic range. Generate an evacuation map image including the location .

According to the present invention, the navigation device is a navigation device installed on a moving body, and has an evacuation map image generation unit that generates an evacuation map image that is a map image including an evacuation site in the event of a natural disaster, and an evacuation map image generation unit. The evacuation map image is equipped with an image format conversion unit that converts the evacuation map image generated by the unit into a predetermined image format, and a transmission unit that transmits the evacuation map image converted by the image format conversion unit to the mobile terminal. The generation unit generates an evacuation map image including a plurality of evacuation sites at an emergency instruction timing, and the transmission unit transmits an evacuation map image including a plurality of evacuation sites to a mobile terminal and evacuates included in the evacuation map image. The number of places can be set by the user at the timing of emergency instruction, and the evacuation map image generator has the number of set evacuation places equal to or greater than the predetermined minimum number included in the predetermined range. In the case of more evacuation sites than the number of evacuation sites in Japan , multiple evacuation sites are evacuated in the event of an emergency due to a natural disaster in order to generate an evacuation map image that includes the minimum number of evacuation sites within the predetermined range. It is possible to tell the way to the place.

Further, the evacuation support method using the navigation device is an evacuation support method using the navigation device installed on the moving body, and (a) the navigation device generates an evacuation map image which is a map image including the evacuation site in the event of a natural disaster. The process, (b) the step of converting the evacuation map image generated in step (a) by the navigation device into a predetermined image format, and (c) the evacuation map image converted in step (b) by the navigation device. Step (a) generates an evacuation map image including a plurality of evacuation sites at a timing emergency instructed by the navigation device, and step (c) generates an evacuation map image including a plurality of evacuation sites. The evacuation map image including the evacuation map image is transmitted to the mobile terminal, and the number of evacuation sites included in the evacuation map image can be set by the user at the timing of emergency instruction. In the step (a), the number of set evacuation sites is set. , Evacuation including the predetermined minimum number of evacuation sites included in the predetermined range when the number of evacuation sites is greater than the predetermined minimum number of evacuation sites included in the predetermined range. Since a map image is generated , it is possible to inform the roads to multiple evacuation sites in the event of an emergency due to a natural disaster.

It is a block diagram which shows an example of the structure of the navigation device by embodiment of this invention. It is a block diagram which shows an example of the hardware composition of the navigation device by embodiment of this invention. It is the figure which simplified the control unit by embodiment of this invention. It is a flowchart which shows an example of the operation of the navigation device by embodiment of this invention. It is a flowchart which shows another example of the operation of the navigation device by embodiment of this invention. It is a flowchart which shows another example of the operation of the navigation device by embodiment of this invention. It is a flowchart which shows another example of the operation of the navigation device by embodiment of this invention. It is a flowchart which shows another example of the operation of the navigation device by embodiment of this invention. It is a block diagram which shows an example of the structure of the navigation system by embodiment of this invention.

Embodiments of the present invention will be described below with reference to the drawings.

<Embodiment>
First, the configuration of the navigation device according to the embodiment of the present invention will be described. The navigation device described below is assumed to be a car navigation device mounted on a vehicle (moving body).

FIG. 1 is a block diagram showing an example of the configuration of the navigation device 1 according to the present embodiment.

As shown in FIG. 1, the navigation device 1 includes a map data storage unit 2, a current position detection unit 3, a current location area determination unit 4, a route search unit 5, a route storage unit 6, and a communication information acquisition unit 7. , Emergency situation determination unit 8, evacuation site number counting unit 9, evacuation site display number determination unit 10, map display range calculation unit 11, transmission map display unit 12, map transmission conversion unit 13, and so on. It includes a map transmission unit 14, a display unit 15, a voice message generation unit 16, a voice guidance unit 17, an input unit 18, and a control unit 19.

FIG. 2 is a block diagram showing an example of a hardware configuration corresponding to each function of the navigation device 1 shown in FIG.

As shown in FIG. 2, the navigation device 1 inputs the map data storage device 20, the communication information receiver 21, the GPS receiver 22, the display device 23, the voice output device 24, and the map transmission device 25. It includes a device 26 and a control unit 27. The control unit 27 includes a CPU (Central Processing Unit) 28, a ROM (Read Only Memory) 29, a RAM (Random Access Memory) 30, a display control unit 31, and an I / O (Input / Output) 32. ing.

The map data storage unit 2 stores map data including evacuation sites in the event of a natural disaster. The map data storage unit 2 corresponds to the map data storage device 20. The map data is digitized map data such as link data and node data. The map data may be stored in the map data storage unit 2 in advance, or may be acquired from the outside. When the map data storage unit 2 acquires the map data from the outside, it is necessary to acquire the map data at predetermined intervals so as to always hold the map data around the current position of the vehicle.

The current position detection unit 3 detects the current position of the vehicle. Specifically, the CPU 28 realizes the function of the current position detection unit 3 by reading and executing the program related to the detection of the current position stored in the ROM 29. Under the control of the current position detection unit 3, the GPS receiver 22 acquires information indicating the current position of the vehicle from the artificial satellite.

The current location area determination unit 4 determines the area of the current position of the vehicle based on the current position detected by the current position detection unit 3. Specifically, the CPU 28 realizes the function of the current location area determination unit 4 by reading and executing a program for determining the current position area stored in the ROM 29.

The route search unit 5 is based on the current position of the vehicle detected by the current position detection unit 3, the map data stored in the map data storage unit 2, and the destination set by the user via the input unit 18. , Search for a route from your current location to your destination. Specifically, the CPU 28 realizes the function of the route search unit 5 by reading and executing the program related to the route search stored in the ROM 29. The route storage unit 6 stores the route searched by the route search unit 5. The route storage unit 6 may be, for example, a RAM 30 or another storage device (not shown).

The communication information acquisition unit 7 controls to acquire various information including information indicating an emergency situation from the outside by communicating with the outside. Specifically, the CPU 28 realizes the function of the communication information acquisition unit 7 by reading and executing a program for acquiring information from the outside stored in the ROM 29. Under the control of the communication information acquisition unit 7, the communication information receiver 21 acquires various information including information indicating an emergency situation from the outside. Here, examples of the communication information receiver 21 include a communication device such as a mobile phone or a smartphone, a TMC (Traffic Message Channel) receiver, a VICS (Vehicle Information and Communication System, registered trademark) receiver, and a DSRC (Dedicated Short Range). Communication, registered trademark) Receivers, etc. can be mentioned.

The emergency situation determination unit 8 determines whether or not the information acquired by the communication information acquisition unit 7 includes information indicating an emergency situation. Specifically, the CPU 28 reads and executes a program for determining whether or not the information acquired from the outside stored in the ROM 29 includes information indicating an emergency situation, so that the emergency situation determination unit 8 To realize the function of. Here, examples of the information indicating an emergency situation include, for example, a signal indicating an emergency state as traffic information, for example, a signal indicating that the seismic intensity is equal to or higher than a predetermined value, and a tsunami having a height equal to or higher than a predetermined height is expected. There are signals that are judged to require evacuation, such as a signal indicating that a forest fire has occurred, a signal indicating that an avalanche has occurred, and the like.

The evacuation site number counting unit 9 counts the number of evacuation sites existing in a specific area. Specifically, the CPU 28 realizes the function of the evacuation site number counting unit 9 by reading and executing a program for counting the number of evacuation sites existing in the specific area stored in the ROM 29.

The evacuation site display number determination unit 10 determines whether or not the designated number of evacuation sites are included in the map displayed by the transmission map display unit 12. Specifically, the CPU 28 reads and executes a program stored in the ROM 29 for determining whether or not a specified number of evacuation sites are included in the map displayed by the transmission map display unit 12. As a result, the function of the evacuation site display number determination unit 10 is realized.

The map display range calculation unit 11 calculates the display range of the map displayed by the transmission map display unit 12. Specifically, the CPU 28 reads and executes a program stored in the ROM 29 for calculating the display range of the map displayed by the map display unit 12 for transmission, thereby functioning the map display range calculation unit 11. To realize. That is, the map display range calculation unit 11 has a function as an evacuation map image generation unit that generates a map (evacuation map image) including an evacuation site at the time of a natural disaster.

The transmission map display unit 12 (evacuation map image display unit) controls the display of the map of the display range calculated by the map display range calculation unit 11. Specifically, the CPU 28 reads and executes a program stored in the ROM 29 for controlling the display of the map of the display range calculated by the map display range calculation unit 11, and thereby the transmission map display unit 12 To realize the function of. Here, the transmission map display unit 12 corresponds to the display control unit 31. The display control unit 31 controls the display device 23 to display a map of the display range calculated by the map display range calculation unit 11. The display device 23 is composed of a liquid crystal display or the like and displays various information.

The map transmission conversion unit 13 (image format conversion unit) converts the map displayed on the display device 23 into a format that can be displayed on the mobile terminal under the control of the transmission map display unit 12. Specifically, the CPU 28 realizes the function of the map transmission conversion unit 13 by reading and executing a program stored in the ROM 29 for converting into a format for transmission to a mobile terminal. Here, the format that can be displayed on the mobile terminal is, for example, PDF (Portable Document Format) or GIF (Graphics Interchange Format), which is displayed even if the mobile terminal does not have a dedicated application for displaying a map. It is a possible format.

The map transmission unit 14 (transmission unit) controls to transmit the map converted by the map transmission conversion unit 13 to the mobile terminal. Specifically, the CPU 28 realizes the function of the map transmission unit 14 by reading and executing a program stored in the ROM 29 for transmitting the map converted by the map transmission conversion unit 13 to the mobile terminal. To do. Under the control of the map transmission unit 14, the map transmission device 25 transmits the map converted by the map transmission conversion unit 13 to the mobile terminal. The map transmission device 25 is an interface capable of communicating with an external device such as Bluetooth (registered trademark), infrared rays, a USB stick, an SD card (registered trademark), and a communication cable.

The display unit 15 controls the display of an image or a telop of characters that alerts the user to an input method or attention when displaying a map including an evacuation site on the display device 23. Specifically, the CPU 28 realizes the function of the display unit 15 by reading and executing a program for controlling the display stored in the ROM 29. Here, the display unit 15 corresponds to the display control unit 31. The display control unit 31 controls the display device 23 to display an input method or a telop of an image or character that calls attention to the user. The display unit 15 may hold the data for generating an image or character telop or the like that calls the user an input method or attention, or the map data storage unit 2 may store the data. , 2 may be stored in a storage unit (not shown). The storage unit may be provided inside the navigation device 1 or may be provided outside the navigation device 1. The display device 23 may include a touch panel, and in this case, has a function as an input device.

The voice message generation unit 16 generates a voice message that calls the user for an input method or attention. Specifically, the CPU 28 realizes the function of the voice message generation unit 16 by reading and executing a program for generating a voice message stored in the ROM 29. The data for generating the voice message may be held by the voice message generation unit 16, may be stored by the map data storage unit 2, or may be stored in a storage unit (not shown in FIGS. 1 and 2). Good. The storage unit may be provided inside the navigation device 1 or may be provided outside the navigation device 1.

The voice guidance unit 17 controls guidance (output) of the voice message generated by the voice message generation unit 16. Specifically, the CPU 28 realizes the function of the voice guidance unit 17 by reading and executing a program for guiding a voice message stored in the ROM 29. The voice message generated by the voice message generation unit 16 is output from the voice output device 24 via the I / O 32 under the control of the voice guidance unit 17. The audio output device 24 is composed of a speaker or the like.

The input unit 18 accepts user input. Specifically, the CPU 28 realizes the function of the input unit 18 by reading and executing a program for receiving the user's input stored in the ROM 29. Under the control of the input unit 18, the signal input by the user from the input device 26 is output to the control unit 19 via the I / O 32. The input device 26 is composed of, for example, a keyboard, a touch pad, a touch panel, a jog operation device, a remote controller, a voice input device, and the like.

The control unit 19 controls the entire navigation device 1. Here, the control unit 19 corresponds to the control unit 27. In the control unit 27, the CPU 28 executes the program stored in the ROM 29 to execute the current position detection unit 3, the current location area determination unit 4, the route search unit 5, the communication information acquisition unit 7, the emergency situation determination unit 8, and the evacuation. Number of places counting unit 9, evacuation site display number determination unit 10, map display range calculation unit 11, transmission map display unit 12, map transmission conversion unit 13, map transmission unit 14, display unit 15, voice message generation unit 16, The functions of the voice guidance unit 17 and the input unit 18 are realized. The ROM 29 stores program constants and the like used by the CPU 28 in the process of operation (process of executing the program). In the process of operating the CPU 28, the RAM 30 develops a program, map data, or the like, or writes a calculation result or the like. The display control unit 31 controls the display of the display device 23. The I / O 32 is an interface between the control unit 27 and the communication information receiver 21, the GPS receiver 22, the display device 23, the voice output device 24, the map transmission device 25, and the input device 26.

FIG. 3 is a simplified view of the control unit 27. In FIG. 3, the processor 33 corresponds to the CPU 28, and the memory 34 corresponds to the ROM 29 and the RAM 30.

Current position detection unit 3, current location area determination unit 4, route search unit 5, communication information acquisition unit 7, emergency situation determination unit 8, evacuation site number counting unit 9, evacuation site display number determination unit 10, map display in the navigation device 1. Each function of the range calculation unit 11, the transmission map display unit 12, the map transmission conversion unit 13, the map transmission unit 14, the display unit 15, the voice message generation unit 16, the voice guidance unit 17, and the input unit 18 is a processing circuit. Is realized by. That is, the navigation device 1 detects the current position, determines the area of the current position, searches for a route, acquires information from the outside, and whether or not the information acquired from the outside includes information indicating an emergency situation. It is determined whether or not the number of evacuation sites existing in a specific area is counted, and whether or not the specified number of evacuation sites are included in the map displayed by the transmission map display unit 12 is determined. The display range of the map displayed by the map display unit 12 for transmission is calculated, the display of the map of the display range calculated by the map display range calculation unit 11 is controlled, and the format is converted into a format for transmission to the mobile terminal. It is provided with a processing circuit for controlling the transmission of a map to a mobile terminal, controlling the display, generating a voice message, controlling the guidance of the voice message, and controlling the input. The processing circuit is a processor 33 (also referred to as a central processing unit, a processing unit, an arithmetic unit, a microprocessor, a microcomputer, or a DSP (Digital Signal Processor)) that executes a program stored in the memory 34.

Current position detection unit 3, current location area determination unit 4, route search unit 5, communication information acquisition unit 7, emergency situation determination unit 8, evacuation site number counting unit 9, evacuation site display number determination unit 10, map display in the navigation device 1. The functions of the range calculation unit 11, the transmission map display unit 12, the map transmission conversion unit 13, the map transmission unit 14, the display unit 15, the voice message generation unit 16, the voice guidance unit 17, and the input unit 18 are software. It is realized by firmware or a combination of software and firmware. The software or firmware is written as a program and stored in the memory 34. The processing circuit realizes the functions of each part by reading and executing the program stored in the memory 34. That is, the navigation device 1 includes a step of detecting the current position, a step of determining the area of the current position, a step of searching a route, a step of acquiring information from the outside, and information indicating an emergency situation in the information acquired from the outside. The step of determining whether or not the evacuation site is present, the step of counting the number of evacuation sites existing in a specific area, and whether the specified number of evacuation sites are included in the map displayed by the transmission map display unit 12. A step of determining whether or not the map is displayed, a step of calculating the map display range displayed by the transmission map display unit 12, a step of controlling the map display of the display range calculated by the map display range calculation unit 11, and a mobile terminal. There are steps to convert to a format for sending, to control the map to be sent to the mobile device, to control the display, to generate a voice message, to control the guidance of the voice message, and to control the input. A memory 34 for storing a program to be executed as a result is provided. In addition, these programs include the current position detection unit 3, the current location area determination unit 4, the route search unit 5, the communication information acquisition unit 7, the emergency situation determination unit 8, the evacuation site number counting unit 9, and the evacuation site display number determination unit 10. , Map display range calculation unit 11, transmission map display unit 12, map transmission conversion unit 13, map transmission unit 14, display unit 15, voice message generation unit 16, voice guidance unit 17, and input unit 18 procedure or method. It can be said that the computer is made to execute. Here, the memory is, for example, a non-volatile or volatile semiconductor memory such as RAM, ROM, flash memory, EPROM (Erasable Programmable Read Only Memory), EEPROM (Electrically Erasable Programmable Read Only Memory), magnetic disk, flexible disk. , Optical discs, compact discs, mini discs, DVDs (Digital Versatile Disk), etc.

Next, the operation of the navigation device 1 will be described. The navigation device 1 may or may not be in the route search using the route search unit 5.

FIG. 4 is a flowchart showing an example of the operation of the navigation device 1.

In step S101, when the emergency situation determination unit 8 determines that the information acquired by the communication information acquisition unit 7 from the outside includes information indicating an emergency situation, the display unit 15 displays a map including the evacuation site on the mobile terminal. The display device 23 is controlled so as to display an evacuation button (a button for giving an emergency instruction) for starting the process of transmitting to. By the control, an evacuation button is displayed on the display device 23. The user presses (emergency instruction) the evacuation button displayed on the display device 23.

In step S102, the transmission map display unit 12 controls the display device 23 so as to display a map including the evacuation site. By the control, the display device 23 displays a map including the evacuation site. Normally (when the evacuation button is not pressed), the map displayed on the display device 23 does not include the evacuation site.

In step S103, the map transmission conversion unit 13 converts the map including the evacuation site displayed on the display device 23 into a format that can be displayed on the mobile communication terminal. The format to be converted by the map transmission conversion unit 13 may be a predetermined format. For example, when displaying a map including an evacuation site on the display device 23, a plurality of format options are also displayed by the user. May be selected. Further, when letting the user select the format to be converted, the user may arbitrarily select the format in which the predetermined format is selected (in this case, for example, the OK button without the user selecting anything). If you press etc., it will be converted to a map of a predetermined format), or you may allow the user to select any format while the format is not selected (in this case, the map unless the user selects one of the formats) The format of the map may not be converted, or if the user presses the OK button or the like without selecting anything, the map may be converted to a map in a predetermined format). After the map transmission conversion unit 13 converts the map format, the map transmission unit 14 controls the map transmission device 25 so as to transmit the converted map to the mobile terminal. Under this control, the map transmission device 25 transmits a map to the mobile terminal.

From the above, since the map including the evacuation site is not included in the map displayed on the display device 23 and the map including the evacuation site is displayed on the display device 23 only in an emergency, the user can comfortably use the navigation device 1. It can provide an environment to use. Further, in an emergency, it is assumed that the communication function of the navigation device 1 and the mobile terminal cannot be exhibited. Even in such a case, the navigation device 1 provides a map including the evacuation site to the mobile terminal. It can be transmitted reliably.

In step S101, the case where the communication information acquisition unit 7 automatically displays the evacuation button when the communication information acquisition unit 7 acquires information indicating an emergency situation from the outside has been described, but the present invention is not limited to this. For example, the evacuation button is always displayed on the menu screen of the display device 23 (always displayed in a predetermined place on the screen) so that the evacuation button can be selected, and the user presses the evacuation button at an arbitrary timing. You may do so. In addition, based on the image taken by the camera mounted on the vehicle, it is determined whether the area around the vehicle is in an emergency (including the state where the vehicle cannot run), and if it is an emergency, an evacuation button is displayed. You may try to do it. The evacuation button is at least one or more of the screen of the navigation device 1 (that is, the screen of the display device 23), the screen provided in the instrument panel (not shown), or the displayable area such as the windshield. It may be displayed in.

Even if the user is placed in an unusual situation such as an emergency, by automatically displaying the evacuation button, the user can display the necessary map (map including evacuation site) with few steps. You can get it and you can evacuate quickly.

The transmission map display unit 12 summarizes a plurality of patterns of a map (a map including an evacuation site) to be transmitted to a mobile terminal, such as a scale showing detailed roads for pedestrians and a scale showing a distant place. It may be generated as a set for transmission. The transmission set may be a single connected map, or may be divided into a size convenient for a format such as PDF or GIF to form a map over a plurality of pages. Also, if the transmission set is a single connected map, it can be enlarged or reduced, and if the transmission set is a map with multiple scales at the same point, there is no need for a special viewer. You can freely view the enlarged or reduced map. Such an operation can also be performed by the transmission map display unit 12. The user can freely use the map by carrying the transmission set, and can proceed while grasping the way to the evacuation site. In addition, by sending a map containing multiple evacuation sites to a mobile terminal, even if the road is cut off and it is blocked from going to the evacuation site that was initially decided, without returning to the car. It will be possible to go to other evacuation sites.

<Modification example>
Next, a modification of the operation of the navigation device 1 (modification examples 1 to 4) will be described.

<Modification example 1>
FIG. 5 is a flowchart showing an example of the operation of the navigation device 1 according to the modified example 1. Since steps S201 and S207 in FIG. 5 correspond to steps S101 and S103 in FIG. 4, description thereof will be omitted here.

In step S202, when the user presses the evacuation button in step S201, the display unit 15 displays an input screen for causing the user to input the display range (geographical range) of the map to be displayed on the display device 23. Control. By the control, the input screen is displayed on the display device 23. The user inputs an arbitrary display range on the input screen displayed on the display device 23. The user inputs the distance centered on the current position as the display range.

In step S203, the evacuation site number counting unit 9 determines whether or not the evacuation site is included in the display range input by the user in step S202. Specifically, the evacuation site number counting unit 9 sets the current position detected by the current position detecting unit 3, the map data stored in the map data storage unit 2, and the display range input by the user in step S202. Based on this, it is determined whether or not the evacuation site is included in the display range. That is, the evacuation site number counting unit 9 determines whether or not at least one or more evacuation sites are included in the display range. If the evacuation site is not included in the display range, the process proceeds to step S204. On the other hand, if the evacuation site is included in the display range, the process proceeds to step S206.

In step S204, the map display range calculation unit 11 calculates the display range including the evacuation site. Specifically, the map display range calculation unit 11 determines the evacuation site closest to the current position based on the current position detected by the current position detection unit 3 and the map data stored in the map data storage unit 2. Search from the map data and calculate the distance between the searched evacuation site and the current position. That is, the map display range calculation unit 11 calculates the distance from the current position to the nearest evacuation site as the display range.

In step S205, the display unit 15 controls to display the display range calculated by the map display range calculation unit 11 in step S204 by a telop or the like. By the control, the display device 23 displays a telop or the like as the minimum display range necessary for including at least one or more evacuation sites. The telop or the like that notifies the display range is a screen of the navigation device 1 (that is, the screen of the display device 23), a screen provided in the instrument panel (not shown), or a displayable area such as a windshield. It may be displayed on at least one of them.

Further, the voice guidance unit 17 controls the guidance of the voice message generated by the voice message generation unit 16. With this control, the voice output device 24 outputs a voice message notifying the minimum display range required to include at least one evacuation site.

Note that the minimum display range notification required to include at least one evacuation site may be either display or voice, or both display and voice.

In step S206, the map display range calculation unit 11 calculates the display range of the map to be displayed on the display device 23, including the display range input by the user in step S202. Then, the transmission map display unit 12 controls to display the map of the display range calculated by the map display range calculation unit 11. By this control, the display device 23 displays a map of the display range input by the user in step S202.

From the above, it is possible to transmit a map including evacuation sites within the range desired by the user to the mobile terminal. If it is determined in step S203 that the evacuation site is not included in the display range, the user can input (reset) the display range again in step S202, so that the user can set the minimum required display range. After grasping it, the display range can be input again.

If it is determined in step S203 that the evacuation site is not included in the display range, the user is asked to input the display range again in step S202, but the present invention is not limited to this. For example, the user may be asked to enter the display range after calculating and notifying the minimum display range required to include at least one evacuation site. That is, the processing of step S204 and step S205 may be performed between step S201 and step S202.

<Modification 2>
FIG. 6 is a flowchart showing an example of the operation of the navigation device 1 according to the modification 2. Since steps S301 and S305 in FIG. 6 correspond to steps S101 and S103 in FIG. 4, description thereof will be omitted here.

In step S302, the current location area determination unit 4 determines whether or not the current position where the vehicle exists is in the city. Specifically, the current location area determination unit 4 determines whether or not the current position where the vehicle exists is an urban area based on the current position detected by the current position detection unit 3. Here, the judgment as to whether or not it is an urban area is made based on the population or population density of each area, information that identifies the city, mountainous area, coastal area, etc., the division of the municipality, the school district, etc. However, this information may be included in the map data. If the current position is in the city, the process proceeds to step S303. On the other hand, if the current position is not in the city, the process proceeds to step S304.

In step S303, the map display range calculation unit 11 calculates a predetermined narrow display range including the evacuation site. At this time, the map display range calculation unit 11 determines whether or not the display range includes at least one or more evacuation sites based on the result of the evacuation site number counting unit 9 counting the number of evacuation sites. .. The predetermined narrow display range is a narrow range such as 2 km. Then, the transmission map display unit 12 controls to display the map of the display range calculated by the map display range calculation unit 11. By this control, the display device 23 displays a map of the display range calculated by the map display range calculation unit 11.

In step S304, the map display range calculation unit 11 calculates a predetermined wide display range including the evacuation site. At this time, the map display range calculation unit 11 determines whether or not the display range includes at least one or more evacuation sites based on the result of the evacuation site number counting unit 9 counting the number of evacuation sites. .. The predetermined wide display range is a wide range such as 10 km. Then, the transmission map display unit 12 controls to display the map of the display range calculated by the map display range calculation unit 11. By this control, the display device 23 displays a map of the display range calculated by the map display range calculation unit 11.

From the above, since there are a plurality of evacuation sites in a narrow area in the city, the user's request can be satisfied by transmitting a map of the narrow range to the mobile terminal. Further, by narrowing the range of the map, the map information of an unnecessary area is not included in the map, so that it can be transmitted to the mobile terminal in a short time. On the other hand, in mountainous areas or coastal areas, the number of evacuation sites is limited, so that a user's request can be satisfied by transmitting a wide range of maps to a mobile terminal. That is, the map display range calculation unit 11 makes the geographical range of the map different depending on the area. In this way, since the map corresponding to the area of the current position is transmitted to the mobile terminal, it is possible to provide a map useful for the user.

In the above, the city may be divided into a plurality of stages. Moreover, such information may be included in the map data.

In the above, the judgment may be made not only for the city but also for each type of area such as a residential area or a factory area.

<Modification example 3>
FIG. 7 is a flowchart showing an example of the operation of the navigation device 1 according to the modification 3. Since steps S401 and S404 in FIG. 7 correspond to steps S101 and S103 in FIG. 4, description thereof will be omitted here.

In step S402, when the user presses the evacuation button in step S401, the display unit 15 controls to display an input screen for causing the user to input the number of evacuation sites to be included in the map displayed on the display device 23. .. By the control, the input screen is displayed on the display device 23. The user inputs an arbitrary number of evacuation sites on the input screen displayed on the display device 23.

In step S403, the map display range calculation unit 11 calculates the display range including the number of evacuation sites input in step S402. Specifically, the evacuation site display number determination unit 10 receives information on the number of evacuation sites input in step S402. Then, the evacuation site display number determination unit 10 searches the map data for the number of evacuation sites input in step S402 in order from the current position, based on the current position detected by the current position detection unit 3. At this time, the evacuation site display number determination unit 10 may search the evacuation site from the map data in the order of the shortest straight line distance from the current position to the evacuation site, and the route from the current position searched by the route search unit 5 is the shortest. You may search from the map data in order from the evacuation site. The map display range calculation unit 11 calculates a display range including the evacuation site searched by the evacuation site display number determination unit 10. Then, the transmission map display unit 12 controls to display the map of the display range calculated by the map display range calculation unit 11. By this control, the display device 23 displays a map of the display range calculated by the map display range calculation unit 11.

There is no problem if the evacuation site near the current position is functioning, or if the road to the evacuation site is not cut off, but in an emergency, the evacuation site or the condition of the road is unknown, so candidates for the evacuation site are It is considered that it is more useful for the user to have more than one. According to the above, by having the user input the number of evacuation sites, the user can grasp the range of the input evacuation sites (where the evacuation site is located).

In step S402, an upper limit on the number of evacuation sites that can be input by the user may or may not be set. When setting an upper limit on the number of evacuation sites, the number of evacuation sites is given to the user after the user presses the evacuation button in step S401 and before the user inputs the number of evacuation sites in step S402. The display unit 15 may display a notification to the effect that the upper limit is set, or the voice guidance unit 17 may provide voice guidance. The notification that the number of shelters is capped may be either display or audio, or both display and audio. When displaying a notification that the number of evacuation sites is limited, the screen of the navigation device 1 (screen of the display device 23), the screen provided in the instrument panel (not shown), the windshield, etc. It may be displayed in at least one or more of the displayable areas of.

When there are multiple evacuation sites that are the maximum value of the number entered in step S402 (there are multiple evacuation sites at the same distance from the current position, and if all of these evacuation sites are adopted, the number entered in step S402. If the number exceeds the number), the number of evacuation sites input in step S402 may be displayed. In this case, since the distance from the current position to the farthest evacuation site is the same, the display unit 15 displays a notification to the user that the number of evacuation sites exceeding the input number is displayed, or voice guidance. The unit 17 may provide voice guidance. The notification that the number of evacuation sites exceeded the number entered may be either display or voice, or both display and voice. To display a notification that the number of evacuation sites exceeded the number entered, the screen of the navigation device 1 (screen of the display device 23), the screen provided in the instrument panel (not shown), or It may be displayed in at least one or more of the displayable areas such as the windshield.

If there are a plurality of evacuation sites that are the maximum values of the number input in step S402, step S402 is based on a predetermined order (for example, the order in which the evacuation site information is stored in the map data). The number of evacuation sites entered in may be displayed.

<Modification example 4>
FIG. 8 is a flowchart showing an example of the operation of the navigation device 1 according to the modified example 4. Since steps S501 and S510 in FIG. 8 correspond to steps S101 and S103 in FIG. 4, description thereof will be omitted here.

In step S502, the evacuation site number counting unit 9 acquires the minimum number of evacuation sites to be displayed on the display device 23. The minimum number of evacuation sites to be displayed may be predetermined, and may be set by the user using the input unit 18 after pressing the evacuation button in step S501, at an arbitrary timing. May be set by the user. When the user sets the number of evacuation sites using the input unit 18 after pressing the evacuation button in step S501, the process of step S502 is a process in which the user inputs the number of evacuation sites. In this case, the initial value may be set in advance. Further, when the user sets the number of evacuation sites at an arbitrary timing, the process of step S502 is the process of acquiring the evacuation sites.

In step S503, the evacuation site number counting unit 9 determines whether or not the number of evacuation sites acquired in step S502 is included in the predetermined range (geographical range) . Here, the predetermined range means, for example, when the number of evacuation sites acquired in step S502 is included in the predetermined range from the current position, the process proceeds to step S505. On the other hand, if the number of evacuation sites acquired in step S502 is not included in the predetermined range, the process proceeds to step S504.

In step S504, the map display range calculation unit 11 calculates the display range so as to include the number of evacuation sites acquired in step S502 by performing the same processing as in step S403 of FIG. That is, the map display range calculation unit 11 expands a predetermined range so as to include the number of evacuation sites acquired in step S502. By performing the process of step S504, at least the number of evacuation sites acquired in step S502 will be included in the predetermined range.

In step S505, the display unit 15 controls to display an input screen for causing the user to input the number of evacuation sites to be included in the map displayed on the display device 23. By the control, the input screen is displayed on the display device 23. The user inputs an arbitrary number of evacuation sites on the input screen displayed on the display device 23.

In step S506, the evacuation site number counting unit 9 acquires the number of evacuation sites included in the predetermined range. The predetermined range referred to here includes the range in the case of YES in step S503 and the range after being expanded in step S504.

In step S507, the evacuation site display number determination unit 10 determines whether or not the number of evacuation sites acquired in step S506 is equal to or greater than the number of evacuation sites input in step S505. If the number of evacuation sites acquired in step S506 is equal to or greater than the number of evacuation sites input in step S505, the process proceeds to step S508. On the other hand, if the number of evacuation sites acquired in step S506 is not equal to or greater than the number of evacuation sites input in step S505, the process proceeds to step S509.

In step S508, the map display range calculation unit 11 calculates the display range including the number of evacuation sites input in step S505 by performing the same processing as in step S403 of FIG. The display device 23 displays a map including the number of evacuation sites input in step S505.

In step S509, the map display range calculation unit 11 calculates the display range including the number of evacuation sites acquired in step S506 by performing the same processing as in step S403 of FIG. The display device 23 displays a map including the number of evacuation sites acquired in step S506. At this time, the display unit 15 displays a notification to the user that the displayable range (predetermined range described above) will be exceeded when the number of evacuation sites input by the user is displayed, or the voice guidance unit. 17 may provide voice guidance. The notification that displaying the number of evacuation sites entered by the user exceeds the displayable range may be either display or voice, or both display and voice. To display a notification that the displayable range will be exceeded when the number of evacuation sites entered by the user is displayed, the screen of the navigation device 1 (screen of the display device 23) or the screen provided in the instrument panel (screen of the display device 23). (Not shown), or may be displayed in at least one or more of the displayable areas such as the windshield.

From the above, in order not to display a map in a range wider than a predetermined range, a large amount of map data is not required, and the time for transmitting to the mobile terminal can be shortened. This allows the user to blame as soon as possible.

The navigation devices described above include not only in-vehicle navigation devices, that is, car navigation devices, but also PNDs (Portable Navigation Devices) and mobile communication terminals (for example, mobile phones, smartphones, tablet terminals, etc.) that can be mounted on vehicles. Further, it can be applied to a navigation device constructed as a system by appropriately combining servers and the like, or a device other than the navigation device. In this case, each function or each component of the navigation device is distributed and arranged in each function for constructing the system.

Specifically, as an example, the function of the navigation device can be arranged on the server. For example, as shown in FIG. 9, the mobile communication terminal 36 is provided with the communication information acquisition unit 7 and the emergency situation determination unit 8 shown in FIG. 1, and the navigation device 35 includes a map data storage unit 2, a current position detection unit 3, and a current location area. Judgment unit 4, route search unit 5, route storage unit 6, evacuation site number counting unit 9, evacuation site display number determination unit 10, map display range calculation unit 11, transmission map display unit 12, map transmission conversion unit 13, A map transmission unit 14, a display unit 15, a voice message generation unit 16, a voice guidance unit 17, an input unit 18, and a control unit 19 are provided, and the navigation device 35 and the mobile communication terminal 36 are provided with a communication unit 37 and a communication unit 38, respectively. By doing so, a navigation system can be constructed. Here, the navigation device 35 and the mobile communication terminal 36 are communicably connected by the communication unit 37 and the communication unit 38. In addition, each component provided in the navigation device 35 may be appropriately distributed and arranged in the mobile communication terminal 36.

Even in the case of the above configuration, the same effect as that of the above embodiment can be obtained.

Further, software (evacuation support method using a navigation device) for executing the operation in the above embodiment may be incorporated into, for example, a mobile communication terminal.

Specifically, as an example, the evacuation support method using the above navigation device is an evacuation support method using a navigation device installed on a moving body, and (a) a map image including an evacuation site in the event of a natural disaster by the navigation device. The step of generating the evacuation map image, (b) the step of converting the evacuation map image generated in the step (a) by the navigation device into a predetermined image format, and (c) the step (b) by the navigation device. The step (a) includes a step of transmitting the evacuation map image converted in (1) to the mobile terminal, and the step (a) is characterized in that the evacuation map image is generated at the timing emergency instructed by the navigation device.

From the above, the same effect as that of the above-described embodiment can be obtained by incorporating the software that executes the operation of the above-described embodiment into the mobile communication terminal and operating the terminal.

In the present invention, the embodiments can be appropriately modified or omitted within the scope of the invention.

1 Navigation device, 2 Map data storage unit, 3 Current position detection unit, 4 Current location area determination unit, 5 Route search unit, 6 Route storage unit, 7 Communication information acquisition unit, 8 Emergency situation determination unit, 9 Evacuation site number counting unit 10, Evacuation site display number determination unit, 11 Map display range calculation unit, 12 Transmission map display unit, 13 Map transmission conversion unit, 14 Map transmission unit, 15 Display unit, 16 Voice message generation unit, 17 Voice guidance unit, 18 input unit, 19 control unit, 20 map data storage device, 21 communication information receiver, 22 GPS receiver, 23 display device, 24 voice output device, 25 map transmitter, 26 input device, 27 control unit, 28 CPU, 29 ROM, 30 RAM, 31 display control unit, 32 I / O, 33 processor, 34 memory, 35 navigation device, 36 mobile communication terminal, 37, 38 communication unit.

Claims (9)

A navigation device installed on a mobile body
An evacuation map image generator that generates an evacuation map image, which is a map image including evacuation sites in the event of a natural disaster,
An image format conversion unit that converts the evacuation map image generated by the evacuation map image generation unit into a predetermined image format, and an image format conversion unit.
A transmission unit that transmits the evacuation map image converted by the image format conversion unit to the mobile terminal, and
With
The evacuation map image generation unit generates the evacuation map image including a plurality of the evacuation sites at an emergency instruction timing, and generates the evacuation map image.
The transmission unit transmits the evacuation map image including the plurality of the evacuation sites to the mobile terminal.
The number of the evacuation sites included in the evacuation map image can be set by the user at the timing of the emergency instruction.
If the evacuation map image generation unit does not include the predetermined minimum number of the evacuation sites within the predetermined geographical range, the evacuation map image generation unit includes the predetermined minimum number of the evacuation sites. Expand the predetermined geographical range and change the predetermined geographical range if the predetermined minimum number of the evacuation sites are included in the predetermined geographical range. Zu,
In the evacuation map image generation unit, the number of the evacuation sites set by the user is larger than the number of the evacuation sites included in the geographical range after the expansion or the predetermined geographical range. In the case of a navigation device, the evacuation map image including the number of the evacuation sites included in the expanded geographical range or the predetermined geographical range is generated . A navigation device installed on a mobile body
An evacuation map image generator that generates an evacuation map image, which is a map image including evacuation sites in the event of a natural disaster,
An image format conversion unit that converts the evacuation map image generated by the evacuation map image generation unit into a predetermined image format, and an image format conversion unit.
A transmission unit that transmits the evacuation map image converted by the image format conversion unit to the mobile terminal, and
With
The evacuation map image generation unit generates the evacuation map image including a plurality of the evacuation sites at an emergency instruction timing, and generates the evacuation map image.
The transmission unit transmits the evacuation map image including the plurality of the evacuation sites to the mobile terminal.
The geographical range of the evacuation map image can be set by the user.
When a plurality of the evacuation sites are included in the geographical range set by the user, the evacuation map image generation unit generates the evacuation map image of the geographical range including the plurality of evacuation sites. Generate and
When a plurality of the evacuation sites are not included in the geographical range set by the user, the evacuation map image generation unit calculates the geographical range including the plurality of evacuation sites, and then performs the calculation. and notified to the user as a minimum geographic extent necessary the geographic area to include a plurality of the shelter, a plurality of the evacuation in the geographic area that has been re-set by the user after the notification A navigation device comprising generating the evacuation map image of a reconfigured geographic range if a location is included . The navigation device according to claim 1 or 2, further comprising an evacuation map image display unit that displays the evacuation map image generated by the evacuation map image generation unit. The navigation device according to claim 1, wherein the predetermined minimum number can be set by the user. The navigation device according to claim 3, wherein the evacuation map image display unit displays a button for giving an emergency instruction. The navigation device according to claim 5, wherein the evacuation map image display unit always displays the button. It also has a communication information acquisition unit that acquires information from the outside by communication.
The navigation device according to claim 5, wherein the evacuation map image display unit displays the button when the communication information acquisition unit acquires the information indicating the natural disaster. The navigation device according to any one of claims 1 to 7, wherein the transmission unit transmits a plurality of the evacuation map images of different scales. It is an evacuation support method using a navigation device installed on a moving body.
(A) A step of generating an evacuation map image which is a map image including an evacuation site at the time of a natural disaster by the navigation device, and
(B) A step of converting the evacuation map image generated in the step (a) by the navigation device into a predetermined image format, and
(C) A step of transmitting the evacuation map image converted in the step (b) by the navigation device to the mobile terminal, and
With
In the step (a), the evacuation map image including the plurality of the evacuation sites is generated at the timing of emergency instruction to the navigation device.
In the step (c), the evacuation map image including the plurality of the evacuation sites is transmitted to the mobile terminal.
The number of the evacuation sites included in the evacuation map image can be set by the user at the timing of the emergency instruction.
The step (a) is described so as to include the predetermined minimum number of the evacuation sites when the predetermined minimum number of the evacuation sites is not included in the predetermined geographical range. If the predetermined geographical range is expanded and the predetermined minimum number of the evacuation sites are included in the predetermined geographical range, the predetermined geographical range is not changed. ,
In the step (a), when the number of the evacuation sites set by the user is larger than the number of the evacuation sites included in the geographical range after the expansion or the predetermined geographical range. A method for supporting evacuation by a navigation device, wherein the evacuation map image including the number of evacuation sites included in the geographical range after the expansion or the predetermined geographical range is generated. ..

Images