JP2012203595A - Navigation device, guidance method, guidance program, and disaster prevention system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disaster prevention system and a device which minimize human damage in natural disaster including a tsunami, with a relatively small budget.SOLUTION: A navigation device comprises: location detection means for detecting a current location; storage means for storing evacuation information in which pieces of information concerning evacuation places in emergency are compiled; reception means for receiving emergency information; calculation means for performing first calculation processing for obtaining the optimum evacuation place among a plurality of evacuation places included in the evacuation information based on the emergency information and the current location; and display means for displaying the obtained optimum evacuation place. A disaster prevention system comprises the navigation device and a disaster information management center for generating the emergency information about disaster to transmit the emergency information to the navigation device. With the disaster prevention system, a user of the navigation device can take an unperturbed evacuation action in occurrence of disaster.

Description

  The present invention relates to a navigation device for guiding a person or a vehicle to a safe place in an emergency, a guidance program used in the navigation device, a guidance method, and a disaster prevention system using the navigation device.

  When a huge natural disaster occurs, people often cannot make calm decisions. Citizens are regularly educated on how to cope with natural disasters through disaster drills so that they can respond calmly even in the event of a natural disaster. Therefore, in Japan, there is a system in which citizens can respond relatively calmly without causing panic even if a natural disaster occurs.

  Japan is one of the countries with many natural disasters. Due to the fact that it is located on the boundary of the continental plate, in Japan, earthquakes are particularly frequent among natural disasters, and the damage caused by such earthquakes is also enormous. Therefore, many disaster prevention systems have been developed to minimize damage in the event of the earthquake.

For example, in Patent Document 1, an emergency earthquake warning system that uses a time difference between an S wave and a P wave propagating when an earthquake occurs to notify a large shake after several seconds before reaching the main shock is used. The invention is disclosed. According to the present invention, by transmitting the earthquake early warning simultaneously to the mobile terminal, citizens can take advance actions such as stopping the gas or hiding under the desk before the main shock arrives. By effectively utilizing the above-mentioned system, it is possible to minimize human damage accompanying an earthquake such as a crushing death due to the collapse of a house or a secondary fire.
JP 2001-309354 A Japanese Patent Laid-Open No. 2001-304876

  In Japan, where the above-mentioned disaster prevention system is in place, the number of casualties is unlikely to exceed several hundred if a normal earthquake occurs. However, it was proved by the earthquake that occurred yesterday that an earthquake beyond imagination could not be dealt with by the above disaster prevention system and daily disaster prevention drills alone.

  In other words, what is most feared by an earthquake is a tsunami. Tsunami is the most dangerous disaster that increases the number of casualties from tens to hundreds. The current disaster prevention system tries to stop the damage by notifying the location of the tsunami, the arrival time, and the magnitude (height) of the tsunami with an alarm.

However, a tsunami is a disaster that can be experienced once in your life, and it can be far beyond your imagination. It is difficult to determine where to evacuate, and it is difficult to establish a sufficient countermeasure even if disaster prevention drills are conducted. In addition, when a large tsunami occurs, they have experienced a huge earthquake in advance, and they are not cool even during disaster drills. Unless the affected area is at home or at work, it is almost impossible to make an optimal evacuation to the tsunami with your own judgment.

In other words, even if it is known that a tsunami will come due to a tsunami warning, the current tsunami warning system cannot cope with whether to evacuate to the second floor of the house or whether to evacuate by going out to the hill even if you take a risk. Unfortunately, those who lived in wooden buildings in this earthquake or who were affected near the coastline went up to the second floor of the house aiming at a high place, and there were many victims who were washed away with the house. It seems to have been. In other words, the information given by the current disaster prevention system alone proved insufficient for tsunamis exceeding a certain level of scale.

Utilizing this lesson, it is necessary to reconstruct a disaster prevention system that can take a more appropriate response to the most dangerous disaster, the tsunami. However, the construction of a large-scale disaster prevention infrastructure is very expensive, and it is practically impossible to prepare all over Japan for disasters that occur once every decades.

In view of the above, the present invention provides a disaster prevention system capable of causing citizens to perform more appropriate evacuation against natural disasters such as tsunami and a device used in the system with a relatively small budget. With the goal.

The navigation device according to the present invention includes a position detection unit that detects a current position, a storage unit that stores evacuation information in which a plurality of pieces of information relating to an evacuation area in an emergency are collected, a reception unit that receives emergency information, and the emergency unit Based on the information and the current position, calculation means for performing a first calculation process for obtaining an optimum evacuation place from a plurality of evacuation places included in the evacuation information, and a display for displaying the obtained optimum evacuation place Means.

  The navigation device according to another aspect of the present invention includes a unit for inputting a current position, the input current position is stored as current position information, and a plurality of pieces of information related to an evacuation site at the time of position emergency are collected. A storage unit for storing evacuation information, a receiving unit for receiving emergency information, and a calculation process for obtaining an optimal evacuation site from a plurality of evacuation sites included in the evacuation information based on the emergency information and the current position information. Calculation means for performing, and display means for displaying the determined optimum evacuation place.

Further, the navigation device according to another aspect of the present invention includes a position detection unit that detects a current position, a storage unit that stores three-dimensional map information, and at least an expected tsunami arrival time and a tsunami arrival location. Receiving means for receiving tsunami information including information relating to the height of the tsunami, and when the tsunami information is received, the tsunami is within a predetermined range from the current position based on the map information and the tsunami information. A calculation means for performing a first calculation process for obtaining a range that can be affected; a display means for displaying a drawing indicating a range that can be affected by the obtained tsunami on a map that is read by drawing the map information; It comprises.

Further, the guidance program of the present invention includes a first reading step for reading emergency information, a second reading step for reading evacuation information in which a plurality of pieces of information relating to an evacuation area in an emergency are collected, and a third reading step for reading the current position. And a calculation step of performing a calculation process for calculating an optimum evacuation site from among a plurality of evacuation sites included in the evacuation information based on the emergency information and the current position.

The disaster prevention system according to the present invention is a disaster prevention system including a transmission device and a navigation device, the transmission device including transmission means for transmitting emergency information, and the navigation device transmits the emergency information. Receiving means for receiving, storage means for storing map information and evacuation information in which a plurality of information relating to an evacuation area in an emergency are collected, and a plurality of evacuation information included in the evacuation information based on the emergency information and the current position A calculating means for obtaining an optimum evacuation place from the evacuation place; and a display means for displaying the obtained optimum evacuation place.

According to the present invention, there is provided a disaster prevention system capable of causing citizens to perform more appropriate evacuation with respect to natural disasters including the current tsunami and a navigation device used in the system with a relatively small budget. Objective.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

(Embodiment 1)
FIG. 1 is a block diagram of a disaster prevention system according to Embodiment 1 of the present invention. The disaster prevention system includes a disaster information management center that generates emergency information related to a disaster or the like to be described later, a transmission device that transmits the generated emergency information, and an appropriate evacuation method that is received by the emergency information and presented to the user. And a navigation device.

Here, the transmission apparatus may be various transmission apparatuses such as an FM broadcast transmission apparatus, a TV broadcast station apparatus, an ITS roadside communication apparatus, a mobile base station apparatus, and an Internet server, and emergency information described later according to a predetermined protocol. Send. The transmission form may be either wireless or wired, and can take various forms such as broadcast and multicast. The navigation device may take various forms such as a car navigation device, a mobile phone terminal device, a smartphone, a portable game machine, a television receiver, and a computer device connected to the Internet. Hereinafter, functions of each device will be described in detail.

The disaster information management center collects information about the disaster that has occurred and generates emergency information about the disaster.

FIG. 2 shows the format of the emergency information. The emergency information includes a disaster type indicating the type of disaster related to the emergency information, disaster level information indicating the magnitude of the disaster, disaster information indicating the content of the disaster for each disaster, and the like. In addition, the emergency information includes information such as a management number uniquely assigned to the same emergency information and a transmission date and time of the emergency information.

Here, the disaster includes, for example, natural disasters such as earthquakes, fires, tsunamis, tornadoes, floods, typhoons, and human disasters such as air strikes, nuclear missile approaches, and riots. The earthquake early warning is also labeled with the disaster type. These disasters are labeled with disaster types as shown in the table of FIG. For example, in the disaster type management table of FIG. 3, the tsunami is associated with “3” and the occurrence of riot is associated with “13”. In this way, 4 bits corresponding to 1 to 16 are included in the emergency information as a disaster type representing the type of disaster.

  FIG. 4 shows an example of information included in the disaster information in the emergency information when the disaster type is earthquake. The disaster information includes the magnitude of the seismic intensity, the location of the epicenter, the depth of the epicenter, information about the time of occurrence of the earthquake, information about the presence / absence of a tsunami, and the like. In addition, when the disaster type is the emergency earthquake warning, information such as the magnitude of the predicted seismic intensity, the location of the epicenter, the occurrence time of the earthquake, and the expected arrival time of the earthquake is included in the disaster information in the emergency information.

  FIG. 5 shows information included in the disaster information in the emergency information when the disaster type is riot occurrence. In the disaster information, information on the area where the riot occurred is included in the disaster information in the emergency information in addition to the information on the contents of the riot.

  FIG. 6 shows information included in the disaster information in the emergency information when the disaster type is a tsunami. The disaster information includes at least information on the predicted arrival time of the tsunami, the tsunami arrival location, and the height of the tsunami in the emergency information. Although FIG. 6 shows an example of disaster information related to one area as a tsunami arrival location, when a tsunami warning is issued across multiple areas, the expected tsunami height for each tsunami arrival location is shown. And the arrival time are included in the disaster information.

  Although not shown, for disasters labeled with other disaster types, disaster information in the emergency information includes disaster information such as disaster contents, disaster occurrence area, and occurrence time.

  Next, a navigation device that receives the emergency information and guides evacuation will be described. Here, a case where emergency information is an earthquake, a tsunami, and an air raid will be described. Needless to say, the emergency information is not limited to these.

  FIG. 7 is a block diagram showing the configuration of the navigation device 100. The navigation device 100 includes a position detection unit 110, a storage unit 120, an input unit 130, a calculation unit 140, a reception unit 150, and a display unit 160.

  The position detection unit 110 is a detection unit that obtains the current position, and obtains the current position by, for example, a position detection method using GPS. Specifically, satellite-specific C / A code signals transmitted from a plurality of satellites are received via a GPS antenna, and a pseudo distance to each satellite is calculated based on the timing of the signal received from each satellite. Find the current position and time. In addition, the position detection unit 110 includes an acceleration sensor that detects acceleration, an orientation sensor that detects an orientation, and the like as necessary, and information such as acceleration, orientation, and other angular velocities obtained by these sensors is included in the GPS. A more accurate position can be obtained in combination with the position obtained in (1). Further, the position detection unit 110 can also obtain an accurate position by a map matching method using map information described later.

  The storage unit 120 stores map information and evacuation information. Here, the map information is general map information including information such as nodes and links. Further, the evacuation information is information in which a plurality of pieces of information related to evacuation places in an emergency are collected.

FIG. 8 shows an example of evacuation information. In the evacuation information, a management number, an evacuation place name, a corresponding disaster type, an address, GPS information, detailed information, and the like are associated in a table form.

Here, the management number is a number for managing each evacuation site. A unique number is assigned to each evacuation site.

The evacuation site name represents a general name of the evacuation site.

The corresponding disaster type indicates a disaster type that the evacuation site can handle. For example, the evacuation site with the management number N00001 is a park, and therefore becomes a temporary evacuation site when an earthquake or fire occurs. On the other hand, since parks are not suitable as evacuation sites for typhoons and tsunamis, earthquakes and fires are associated as the types of disasters that can be handled at the evacuation sites. On the other hand, the evacuation site of N00004 is a building and can be a temporary evacuation site when a tsunami or a tornado hits, but it is not suitable as an evacuation site when air raids from other countries. Therefore, the corresponding disaster type for the evacuation site is associated with a tsunami and a tornado. The same applies to other evacuation sites, and the types of disasters that can be handled at the evacuation sites are stored. In this table, “earthquake” and “tsunami” are described, but the numbers are also stored in correspondence with the numbers labeled for the disaster types included in the emergency information described above. That is, since “3” is assigned to the tsunami in the disaster type included in the emergency information shown in FIG. 3, “3” is recorded in the evacuation place that can handle the tsunami even in the disaster type corresponding to the evacuation information. Yes.

The address represents the address of the evacuation site.

The GPS information indicates position information by GPS of the evacuation site. Specifically, information such as the latitude (eg, Lat34, 12, 00, 05), longitude (eg, Lon138, 45, 54, 01), altitude (Alt12.3m) of the evacuation site is recorded.

The detailed information indicates specific information regarding the evacuation site. For example, in the nuclear shelter having the management number N36021, information such as the number of persons accommodated and whether or not there is a food reserve is stored together.
In addition, information on how high a tsunami can withstand is stored at the evacuation site of N00044. Further, although not shown in the figure, information on how much tsunami intensity can be withstood as necessary, the number of people that can be accommodated, whether there is an automatic lock, and the like are also recorded.

  The input unit 130 is an input unit for inputting an instruction from a user, and may take various user interface forms such as a touch panel, an input key, and voice input. For example, the user inputs information related to the destination to the apparatus 100 via the input unit 130.

  The receiving unit 140 receives the emergency information described above. The received emergency information is output to the calculation unit 140.

The calculation unit 150 is a processing unit that performs various calculations such as calculation of an optimal route and calculation of an optimal evacuation place, which will be described later, and for example, a CPU (Central processing unit) corresponds to this. The CPU also functions as a system controller that manages control of the entire apparatus as necessary. Specifically, the calculation unit 150 performs a plurality of processes shown below.

As the first calculation process, the calculation unit 150 calculates a route to the destination designated by the user. The calculation unit 150 is based on the destination input by the user via the input unit 130, the current position detected by the position detection unit 110, and the map information stored in the storage unit 120. The calculation process for obtaining the optimum route to the destination is performed. Note that the calculation unit 150 obtains an optimum route by further using traffic assistance information such as traffic jams and traffic closures transmitted by VICS (VICS is a registered trademark, hereinafter omitted) as necessary. Can do.

  Moreover, the calculation part 150 performs the process which specifies an optimal evacuation place from the several evacuation place contained in the said evacuation information as 2nd calculation processing. Specifically, the type of disaster is specified from the disaster type included in the emergency information received by the receiving unit 140, and the evacuation place corresponding to the disaster type is extracted from the evacuation information. Next, out of the extracted evacuation places, evacuation places that can be evacuated from the current position obtained by the position detection unit 110 are extracted as evacuation place candidates. Next, an optimum evacuation site is obtained from the extracted evacuation site candidates according to a predetermined determination algorithm. Here, when calculating the optimum evacuation site, the calculation unit 150 determines the optimum evacuation site according to a predetermined algorithm based on the distance from the current position, the strength of the evacuation site, the number of people that can be accommodated in the evacuation site, and other factors. Can be requested.

Further, as the third calculation process, the calculation unit 150 obtains an optimum evacuation route from the current position obtained by the position detection unit 110 to the optimum evacuation place obtained by the second calculation process. As a method for obtaining the optimum evacuation route, for example, by combining information on the nodes and links of the map information recorded in the recording unit 120, the most traveled distance among a plurality of routes from the current position to the optimum evacuation location. The route with the shortest or the shortest travel time is obtained as the optimum evacuation route. Note that the order of the first to third calculation processes is in no particular order.

The display unit 160 displays the optimum evacuation site obtained by the calculation unit 150. The display unit 160 also displays the optimal evacuation route to the optimal evacuation site. As a display panel for displaying the optimum route, various displays such as a liquid crystal display, an organic EL display, and a plasma display can be employed. Here, the display unit 160 may display the optimum evacuation route obtained by the calculation unit 150 on the map drawn based on the map information stored in the storage unit 120 in an overlay display. it can. The display unit 160 can also overlay-display the route to the destination obtained by the first calculation process of the calculation unit 150 on the map drawn based on the map information.

FIG. 9 shows an example of a screen that the display unit 160 displays on the display panel. In FIG. 9, the display unit 160 displays the optimum evacuation place 800 obtained by the second calculation process in the calculation unit 150, the optimum evacuation route 801 to the optimum evacuation place obtained by the third calculation process, and the current The position 802 is displayed as an overlay on a map 803 corresponding to the current position.

In FIG. 9, the display unit 160 further displays the following information. The display unit 160 displays, in a window, information 804 relating to the optimum evacuation site obtained by the second calculation process in the calculation unit 150. The information regarding the optimum evacuation site is displayed by reading the information regarding the optimum evacuation site from the evacuation information in which a plurality of pieces of information relating to the emergency evacuation site stored in the storage unit 120 is stored in the storage unit 120. To do. Here, the information read includes the name and address of the evacuation site.

The display unit 160 also displays the content 804 of emergency information received by the receiving unit 140. The display unit 160 also displays an expected evacuation time 805 that is the time taken from the current position to the evacuation site. The estimated evacuation time 805 is obtained by the calculation unit 150 and displayed on the display unit 160. In other words, the calculation unit 150 determines the distance from the current position input from the input unit 110 (the current position detected by the position detection unit when the navigation device includes the position detection unit) to the optimum evacuation site. Is divided by the average travel distance per unit time (m / min) in the means of transportation (walking, car, bicycle) to the evacuation site to obtain the expected evacuation time.

Next, a processing flow of the navigation device will be described. FIG. 10 is a flowchart showing the operation of the navigation device.

  The position detection unit 110 detects the current position at a predetermined timing (step 001). Here, the predetermined position is detected, for example, at a rate of once per second. Information about the detected position is output to the calculation unit as necessary.

Next, the receiving unit 140 receives emergency information transmitted from the outside (step 002). The emergency information received by the receiving unit 140 is output to the calculating unit 140.

  When the emergency information is input from the reception unit, the calculation unit 140 reads the current position information, which is information related to the current position, from the position detection unit 110 (step 003).

Next, the calculation unit 140 reads evacuation information from the storage unit 120 (step 004). Note that the order of step 003 and step 004 may be in any order.

Next, the calculation unit 140 selects an optimum evacuation place according to a predetermined algorithm based on the emergency information, the evacuation information, and the current position information (step 005).

More specifically, based on the disaster type included in the emergency information, a plurality of evacuation sites labeled as corresponding to the disaster type are selected from the evacuation information in which a plurality of pieces of information related to the emergency evacuation sites are collected. Extract as evacuation site candidates (step 005-a).

Next, a plurality of evacuation sites within a predetermined distance from the current position are extracted as more desirable evacuation site candidates from the plurality of evacuation sites extracted in step 005-a based on the current position information (step 005-b). More specifically, based on the predicted tsunami arrival time and the evacuation completion request time included in the emergency information, a plurality of evacuation sites existing within a distance range that can be moved within the time from the current position are extracted. Here, the evacuation completion request time is a type of information included in the emergency information, and is time information indicating how long the evacuation should be completed from the current time. If the type of disaster is a tsunami, the difference between the predicted tsunami arrival time and the current time corresponds to this. In addition, if the disaster is an air raid, a nuclear missile, or a tornado, this corresponds to the expected air raid time, the expected nuclear missile arrival time, the difference between the expected tornado arrival time and the current time, respectively. Similarly, for other disasters, the time is required for evacuation.

Next, one optimum evacuation site is selected from the evacuation site candidates extracted in step 005-b based on a predetermined algorithm (step 005-c). Here, as the algorithm, for example, an algorithm described later can be used, but there is no particular limitation.

Next, the display unit 160 displays the optimum evacuation site selected in step 005 on the screen (step 006).

At the same time, the calculation unit 150 calculates an optimal evacuation route from the current position to the evacuation site based on the current position information already read and the optimum evacuation site selected in step 005 (step 007). ).

Specifically, the calculation unit 150 reads the map information stored in the storage unit 120, and based on a predetermined algorithm from among many routes for reaching the optimal evacuation site from the current position. A plurality of routes that can be candidates are extracted (step 007-a). Here, an algorithm for extracting a plurality of routes that can be promising candidates is based on the map information, and from a smaller number of nodes that pass between the current position to the optimum evacuation site, a certain number You may comprise so that a path | route may be extracted.

Next, the route with the shortest travel distance is identified as the optimum evacuation route from among the plurality of routes extracted in step 007-a (step 007-b).

The display unit 160 draws a map based on the map information read from the storage unit 120, and displays the optimum evacuation route from the current position obtained in step 007 to the optimum evacuation site in an overlay display (step 008). ). The display unit 160 also includes information on the optimum evacuation site displayed in step 006 and other information such as the estimated travel time required from the current position separately calculated by the calculation unit 150 to the optimum evacuation site. To display.

As described above, the navigation device according to the first embodiment includes a storage unit that stores evacuation information, a reception unit that receives emergency information, and a determination unit that determines an evacuation destination based on the emergency information and the evacuation information. And a presentation unit for presenting the determined evacuation destination. Thus, when emergency information is received, the user can evacuate according to the presentation by having a function of presenting an evacuation destination.

Furthermore, the navigation device according to the first embodiment includes a position detection unit that detects the current position, a storage unit that stores evacuation information in which a plurality of pieces of information relating to emergency evacuation sites are collected, and reception that receives emergency information. Based on the emergency information and the current position, a calculation unit for performing a first calculation process for obtaining an optimum evacuation place from a plurality of evacuation places included in the evacuation information, and the obtained optimum evacuation place are displayed. And a display unit. With this configuration, a more optimal evacuation place can be obtained and displayed, and the user can evacuate appropriately to the displayed evacuation place.

  Further, in the navigation device according to the first embodiment, the storage unit further stores map information, and the calculation unit calculates the optimal route from the current position to the optimal evacuation site based on the map information and the current position. A second calculation process for obtaining the above is performed. And a display part takes the structure which displays the optimal route | route to the optimal evacuation site. With this configuration, since a more optimal evacuation route is displayed, a more appropriate evacuation action can be taken.

  Note that the display unit can overlay display the optimum route to the optimum evacuation site on the map drawn by reading the map information. The user can take refuge behavior calmly without losing sight of the current position even during evacuation.

In addition, the navigation device is favorable in terms of cost because there are many functions that can be reused if it has a navigation function to a destination designated by the user. That is, the navigation device further includes an input unit for inputting the destination, and the calculation unit is configured to optimize the current position to the destination based on the input destination, the detected current position, and the map information. A third calculation process for obtaining a simple route is performed. Then, the display unit overlays and displays the optimum route to the destination on the map read by reading the map information. It may be configured in this way.

However, the latter is much more important in the destination designated by the user and the optimum evacuation site that the calculation unit obtains based on the reception of the emergency information. Therefore, when the display unit displays the optimum route to the destination as an overlay, the optimum evacuation route to the optimum evacuation site is obtained by the second calculation process in the calculation unit based on the received emergency information. In such a case, it is more preferable that the overlay display of the optimum route to the destination is canceled and the optimum evacuation route to the optimum evacuation site is displayed on the map. This is because if two destinations are displayed when the user has lost calmness, an erroneous determination may be invited.

Although the navigation device can be used for evacuation guidance in emergency situations such as disasters as described above, the present invention has been invented in order not to cause damage caused by a large tsunami that occurred the other day. . Therefore, the case where the emergency information is a tsunami will be described in more detail.

This navigation device receives at least information about the expected tsunami height, tsunami arrival time and tsunami arrival location as emergency information, and the calculation unit predicts the expected tsunami height and tsunami arrival included in the emergency information. Based on the location and the current position, it is determined whether the current position is included in the range affected by the tsunami. If it is determined that the current position is included in the previous period, the multiple items included in the evacuation information Among the emergency evacuation sites, one evacuation site that can be reached from the current position by the arrival time of the tsunami is obtained as the optimum evacuation site.

As described above, if the navigation apparatus according to the first embodiment is used, when a disaster occurs, it is possible not only to notify the disaster information but also to present an appropriate evacuation route to the user. Therefore, when a situation that cannot be envisaged by normal evacuation drills such as tsunami, air raid, nuclear attack, etc., it is possible to guide the user whose thinking ability is reduced to a safe place appropriately. Victims can be reduced.

  In addition, since the said navigation apparatus 100 assumed the car navigation apparatus, the mobile telephone terminal, etc. as an example, for example, it was the structure provided with the position detection part 110, However, It is not restricted to this. For example, it is possible to take a form in which the position detection unit 110 is not provided. FIG. 11 shows a block diagram of another type of navigation apparatus 200.

  The navigation device 200 in FIG. 8 includes a storage unit 120, an input unit 130, a reception unit 140, a calculation unit 150, and a display unit 160. Each of these blocks is connected to each other through a bus.

Here, in the navigation device 200, the user can register the current position via the input unit 130. Current position information, which is information regarding the current position input by the user, is stored in the storage unit 120. When the emergency information is received by the receiving unit 140, the calculation unit 150 reads the current position information stored in the storage unit 120 and performs the second or third calculation process described above. Since the navigation device 200 does not have a position detection unit, the first calculation process performed by the calculation unit of the navigation device 100 is not performed.

In other words, the navigation device 200 stores an input unit that inputs the current position, and stores the input current position as current position information, and stores evacuation information in which a plurality of pieces of information related to the evacuation location at the time of position emergency are collected. Means, receiving means for receiving emergency information, calculation means for performing a calculation process for obtaining an optimum evacuation place from a plurality of evacuation places included in the evacuation information based on the emergency information and the current position information, and obtained optimum Display means for displaying the evacuation site.

As such a navigation apparatus 200, for example, a television receiver or a computer connected to the Internet is assumed. When a television receiver or a computer connected to the Internet has the above-described configuration, for example, when a television or a computer is used in a house, when emergency information is received by a television broadcast or an Internet broadcast, It is possible to appropriately determine whether to stay at home or to evacuate to an evacuation site indicated by the navigation device.

  Therefore, like the tsunami that occurred this time, in view of the scale of the tsunami, it would be possible to lose your life by making an incorrect decision that it would be okay if you waited on the second floor of the house where you should evacuate. It is possible to reduce as much as possible. At the same time, every time an earthquake occurs, it is possible to prevent the tsunami from being overly alert and evacuating to high ground. Originally, considering safety, it is not a bad idea to evacuate to high ground whenever an earthquake occurs. However, human beings are not able to evacuate because they become less aware of the crisis and become troublesome as they make every effort to avoid tsunamis that do not actually attack. And when you should originally evacuate, you may invite a situation where you do not evacuate. For this reason, the present apparatus capable of accurately navigating whether or not to evacuate is an effective apparatus for minimizing human damage when a disaster occurs.

Since the navigation device 200 may be fixed in the house, the calculation unit 150 may not perform the third calculation process. That is, it is considered that the user of the navigation device 200 is familiar with the surrounding environment when installed in the house. Therefore, it is considered that the user can reach the evacuation site optimally if only the optimum evacuation site obtained in the second calculation process is known.

Therefore, the navigation device 200 may be configured as follows. That is, the calculation unit 150 performs a process of identifying an optimum evacuation place from among a plurality of evacuation places included in the evacuation information as the second calculation process. Specifically, the type of disaster is specified from the disaster type included in the emergency information received by the receiving unit 140, and the evacuation place corresponding to the disaster type is extracted from the evacuation information. Next, the current position input from the input unit and registered / stored in the storage unit 120 is read. Extract evacuation sites where evacuation is possible. Next, an optimum evacuation site is obtained from the extracted evacuation sites based on the current position.

Here, the calculation unit 150 determines the optimum evacuation site based on the distance from the current position, the number of people that can be accommodated in the evacuation site, the time required to evacuate from the current position to the evacuation site, and a plurality of other factors. An optimal evacuation site is determined according to a predetermined algorithm.

Here, it is desirable that the algorithm used by the calculation unit 150 to obtain an optimal evacuation location is given a certain margin so that evacuation can be given a margin.

For example, when the emergency information is information related to a tsunami and the evacuation site is on a hill, the time required from the current position to the evacuation site is 20 when the tsunami arrival time is 20 minutes after the current time. It may not be preferable to be exactly right. In other words, when evacuating, the evacuation speed of the elderly may be slower than the assumed evacuation speed, or it may take a longer time than expected due to confusion in evacuation. In this case, it may lead to a situation where a tsunami arrives before reaching the evacuation site.

Therefore, the calculation unit 150 is configured to select an evacuation place that can be reached within 15 minutes from the current location as an optimum evacuation place with a ¼ margin when the tsunami arrival time is 20 minutes. Also good. However, if there is no evacuation place that can respond to the disaster within the movement range within 15 minutes including the margin by the above algorithm, the evacuation place that can be reached within 20 minutes may be searched by removing the margin. If the search unit finds an evacuation site that can be evacuated within a period of 15 minutes or more and 20 minutes or less by the search, the calculation unit 150 may specify one of such evacuation sites as an optimum evacuation site.

Similarly, it is desirable that the calculation unit 150 specifies an optimum evacuation site with a margin for the height of the tsunami. For example, in the algorithm used in the calculation unit 150, when the emergency information is information related to a tsunami, it is desirable to obtain an optimum evacuation site after giving a margin to the height of the tsunami included in the information.

For example, if the expected tsunami height is 6m, and the tsunami height that can be accommodated in the evacuation site is 6m, the evacuation will occur if a larger tsunami comes out than expected. There are cases where the function cannot be performed as a place. Therefore, the calculation unit 150 relates to an emergency evacuation site stored in the storage unit 120 for an evacuation site that can correspond to the height of the expected tsunami included in the emergency information plus a predetermined margin. A plurality of pieces of information may be extracted from evacuation information collected, and one evacuation place may be specified as the optimum evacuation place from the extracted plurality of evacuation places.

In this way, by providing a margin of about 5m to 10m to the expected tsunami height, even if a tsunami 3 to 5m higher than the expected tsunami height comes in, it functions as an evacuation site. be able to. Therefore, even if there is an evacuation site that can withstand a tsunami of 6m near the current location, it is within a range that can be sufficiently moved by the expected tsunami arrival time and can be stopped by a tsunami of 20m or more. If there is, the calculation unit 150 may identify the latter evacuation site as the optimum evacuation site. As with the margin at the arrival time, if no evacuation site is found in the first search with a margin for the tsunami height, the margin is removed and the evacuation can withstand the expected tsunami height. You may search for a place.

Here, the calculation unit 150 of the navigation device 200 may not perform the third calculation process. As described above, since the user is familiar with the surrounding environment, evacuation is possible even if the thinking ability is reduced in an emergency, as long as the optimum evacuation site obtained in the second calculation process can be identified. It is.

Therefore, the display unit 160 displays information related to the optimum evacuation site obtained by the calculation unit 150. It may be configured in this way. The most fatal mistake that people who have lost their ability to think at the time of a disaster commit the wrong place to evacuate. That is, when there is a possibility of an earthquake and a tsunami, you may be upset and temporarily evacuate to a nearby park to protect yourself from the collapse of surrounding buildings. However, considering the existence of the tsunami, it is necessary to evacuate to a hill or a solid building of reinforced concrete. Here, this navigation device gives the user a “tsunami with an expected altitude of 6 m to reach the user within 20 minutes. △△ The 5th floor or higher of the building is the optimal evacuation site, so evacuate there immediately. If you give a message such as “Please do!”, Even if the user is upset, the user knows the existence of the ΔΔ building and can evacuate sufficiently.

In the above description, the case where emergency information relates to a tsunami has been described in detail, but the same applies to other disasters. The calculation unit 150 selects an evacuation area in a range including a margin with respect to a time such as an expected air attack time, an expected arrival time of a nuclear missile, an expected arrival time of a tornado as an algorithm for selecting an optimal evacuation area. Considering the possibility of evacuation areas overflowing with refugees, shelters with sufficient capacity can be selected as the optimum evacuation area.

In addition, the above algorithm weights various factors such as the current time, season, day of the week, traffic restriction, etc., and it is possible to select one evacuation site as an optimum evacuation site from among a plurality of evacuation sites. is there.

In the above description, the calculation unit 150 has described the case where one evacuation place is selected as the optimum evacuation place from among a plurality of evacuation places in the second calculation process, but the present invention is not limited to this. Several evacuation sites may be selected as optimum evacuation site candidates from a plurality of evacuation sites. The display unit 160 may display the several evacuation sites selected by the calculation unit 150 as optimum evacuation site candidates. By configuring in this way, it is possible to give the user a decision right to some extent. However, since a user may be confused when a plurality of evacuation candidates are presented in an emergency, it may be desirable to present one evacuation site as an optimal evacuation site candidate. On the other hand, if one evacuation site is presented as the optimum evacuation site, there is a possibility that all nearby residents may concentrate on one evacuation site. It is also desirable to present it as a candidate.

  In the above description, the optimum evacuation place and the evacuation route obtained by the calculation unit are presented to the user in the form of a screen display. However, the present invention is not limited to this, and the user is alerted using voice. You can go. That is, the navigation devices 100 and 200 are separately provided with a voice generation unit, and convert the obtained optimum evacuation place and evacuation route into voice. A form in which the voice generated by the voice conversion is presented to the user through a speaker (not shown) is also possible. In this case, the navigation device is a voice navigation device, and specific devices can take various forms such as a radio, a television receiver, and a music generation player.

In addition, the evacuation information which is information showing the emergency evacuation place recorded in the recording unit may be stored together with the voice. In the case of this form, there is no need for a separate voice generation unit, and the voice reproduction unit (not shown) reads the optimum evacuation place obtained by the calculation unit, and voice is emitted through the speaker.

Thus, in the navigation device of the present embodiment, each device seeks the optimum evacuation site. In the event of a disaster, the number of people affected is enormous, and prompt action is required. Therefore, there is a limit in the current calculation function ability to guide each user individually after performing a huge amount of processing in a very short time in the central server. On the other hand, the navigation device of the present embodiment broadcasts a small amount of information necessary to identify the optimum evacuation site, and each device scatters and finds the optimum evacuation site while grasping the current situation. . Therefore, it is possible to assemble a device with a simple configuration on both the transmission side and the reception side, and it is possible to assist in evacuating the user appropriately by quickly calculating the result.

(Embodiment 2)
The navigation device according to the second embodiment does not have evacuation information as compared with the navigation device according to the first embodiment. On the other hand, a three-dimensional map including the sea level is stored as map information. The position detector detects a three-dimensional position including the sea level. Details will be described below.

FIG. 9 is a block diagram of the navigation device 300 according to the second embodiment. The navigation device 300 according to the second embodiment includes a position detection unit 310, a storage unit 120, an input unit 130, a reception unit 140, a calculation unit 150, and a display unit 160. Hereinafter, each block will be described. However, a part of the description of the same blocks as the navigation device 100 of the first embodiment is omitted.

The position detection unit 310 is a detection unit that obtains the current position, and obtains the current position by, for example, a position detection method using GPS. Here, the position detection unit 310 detects altitude in addition to latitude and longitude. That is, the position detection unit 310 detects the current position in the three dimensions of the X direction, the Y direction, and the Z direction.

The storage unit 120 stores map information. Here, the map information stored in the storage unit 120 is a three-dimensional map. That is, the storage unit 120 stores a map having the concept of “height” such as altitude above sea level and contour lines in addition to latitude and longitude.

The receiving unit 140 receives emergency information from the outside. Here, description will be made assuming that the emergency information is information related to the tsunami. When receiving the emergency information, the reception unit 140 outputs the received emergency information to the calculation unit 150.

When the emergency information related to the tsunami is input from the reception unit 140, the calculation unit 150 reads the current position information, which is information related to the current position, from the position detection unit 310.

The calculation unit 150 determines whether or not the current position is within a range that may be damaged by the tsunami, based on the read current position information and information on the tsunami included in the emergency information. More specifically, the calculation unit 150 performs a first calculation process for identifying a range that can be damaged by the tsunami based on the expected tsunami height and the tsunami arrival position included in the emergency information. . Next, a second calculation process is performed to determine whether the current position is included in the range obtained in the first calculation process. When it is determined by the second calculation process that the current position belongs to a range that can be damaged by the tsunami, the current position is not affected by the tsunami, and from the current position to the expected arrival time of the tsunami A third calculation process is performed to identify one place that can be moved to the position based on the map information. The calculation unit 140 sets the identified place as a destination as an evacuation place, and performs a fourth calculation process for obtaining an optimum route from the current position to the evacuation place.

The display unit 160 overlays and displays a drawing showing a range that can be damaged by the tsunami obtained in the first calculation process on the map drawn based on the map information stored in the storage unit 120. The user is warned of the extent of possible damage from the tsunami. The display unit also overlay-displays the optimum evacuation route obtained in the fourth calculation process in the calculation unit 150.

FIG. 13 shows an example of a display screen displayed by the display unit 160. The display unit displays, on the display screen, the current position 901, areas 902 and 903 that can be damaged by the tsunami obtained in the first calculation process, the evacuation place 904 obtained in the third calculation process, and the evacuation place from the current position 901. The optimum route 905 up to 904 is displayed as an overlay on the drawn map. Here, 902 indicates a range that is highly likely to be damaged by a tsunami (a so-called warning range and a evacuation recommendation has been issued), and 903 is a range that may be damaged by a tsunami (a so-called caution range). , A range of alerts).

Next, processing operations in the navigation device will be described. FIG. 14 is a flowchart showing the processing flow. Hereinafter, emergency information related to tsunami is described as tsunami information in particular. Here, a case where a tsunami with a height of 6 m is predicted will be described.

  The position detection unit 110 detects the current position at a predetermined timing (step 001). Here, the predetermined position is detected, for example, at a rate of once per second. Information about the detected position is output to the calculation unit as necessary.

Next, the receiving unit 140 receives tsunami information transmitted from the outside (step 002). The tsunami information received by the receiving unit 140 is output to the calculating unit 140.

  When the tsunami information is input from the receiving unit, the calculating unit 140 reads the current position information, which is information regarding the current position, from the position detecting unit 110 (step 003).

Next, the calculation unit 140 roughly determines whether the current position is an area affected by the tsunami from the read current position information and the area where the tsunami warning included in the tsunami information is issued ( Step 004). For example, when the tsunami warning is on the Sea of Japan side and the current position is on the inland or Pacific side, there is no need to conduct evacuation guidance, and the process ends.

On the other hand, if the current position is in the area where the tsunami warning is issued, the land is based on the expected tsunami height, tsunami arrival location, map information, and current position included in the tsunami information. A place affected by the tsunami is specified (step 005). The identification method will be described with reference to FIGS.

FIG. 15 is a diagram obtained by cutting out an XZ plan view of a map near the coast from the three-dimensional map information. The portion A on the right side of the figure is the sea, and the left side of the figure is the land. Here, the dotted line is the height of the sea surface when the sea level rises by 6 meters due to the tsunami, and the upper dotted line schematically shows the height of the sea surface when the sea level rises by 10 meters due to the tsunami.

As can be seen from the figure, when the sea level rises by 6 m, the land near the coast and below 6 m above sea level is below the sea level. In other words, if the tsunami is approaching, it will be in the range that can be damaged. The same applies to the case of 10 m. Therefore, the position indicated by “Alert” in FIG. 15 is an area that is submerged when a 6-meter tsunami hits, and is a warning area where an evacuation recommendation is issued. On the other hand, if the forecast is off, or if there is a possibility that a tsunami will enter the inland area due to topography, an area of 10 m or less above sea level (the position indicated by “Cation” in FIG. 12) will be alerted. It becomes an attention area.

FIG. 16 is a diagram showing a map corresponding to FIG. 15 in the XY plane. The right side of the figure is the sea, and the left side is the land. Here, in FIG. 16, the shaded range indicates the range where the alert is issued, and the shaded range indicates the range where the evacuation recommendation is issued. The calculation unit 150 extracts a range of 6 m or less above sea level and a range of 10 m or less within a predetermined distance from the coastline from the three-dimensional map information, and specifies the range as a range that can be damaged by the tsunami. In addition, since the tsunami easily erodes near the river even if the sea level is higher than the height of the tsunami, the calculation unit 150 takes a margin of 20 m for the vicinity of the river and about the place near the river of 26 m or less above the sea level. Is also specified as the range that can be damaged by the tsunami. The calculation unit 150 temporarily stores data regarding the extracted range in a buffer memory (not shown).

Next, the calculation unit 150 determines whether or not the current position is within a range that can be damaged by the tsunami identified in Step 005 (Step 006). Specifically, it is determined whether or not the current position is included in the position range extracted as a predicted tsunami damage area temporarily stored in the buffer memory.

If the calculation unit 150 determines in step 006 that the current position is within the range that can be damaged by the tsunami, the calculation unit 150 is outside the range that can be damaged by the tsunami and is within the tsunami arrival time from the current position. A place that can be reached is specified as an evacuation place (step 007). Here, the calculation unit 150 adds a predetermined margin to the height of the tsunami that is on the line connecting the current position and the coast as the evacuation site, on the opposite side of the coast and where the altitude above sea level is expected. A place higher than the height can be specified as an evacuation site. In addition, the calculation unit 150 performs a search process to determine whether there is any place within a concentric circle with a predetermined radius from the current position that is higher than the height of the tsunami where the altitude above sea level is expected plus a predetermined margin. If the location exists, the location may be specified as an evacuation site. If there is no corresponding place in the concentric circle, the radius of the concentric circle may be enlarged and the same processing may be repeated.

Next, the calculation unit 150 sets the evacuation place as a new destination (step 008). Even when the user has previously input a destination and route guidance has been performed, the evacuation place obtained in the above step is forcibly set as a new destination.

Next, the calculation unit 150 calculates an optimum route from the current position to the evacuation site (step 009).

Next, the display unit 160 overlays the map drawn based on the map information with the range that can be affected by the tsunami obtained at step 005, the evacuation place obtained at step 007, and the optimum route obtained at step 008. (S010). By performing such processing, the user can take appropriate evacuation behavior.

As described above, in the navigation device according to the second embodiment, the position detection means for detecting the current position, the storage means for storing three-dimensional map information, at least the expected arrival time of the tsunami and the tsunami Receiving means for receiving tsunami information including information on the arrival location and the height of the tsunami, and when the tsunami information is received, within a predetermined range from the current position based on the map information and the tsunami information A calculation means for performing a first calculation process for obtaining a range that can be affected by a tsunami, and a display that displays a drawing indicating the range that can be affected by the obtained tsunami on a map that has been read by drawing the map information Means.

By configuring in this way, it is possible to visually grasp the area affected by the tsunami, so it is possible to grasp sensuously where it is safe to evacuate. Therefore, even when the user has lost calmness, the user can take an appropriate evacuation action.

Further, in the navigation device according to the second embodiment, the calculation means is within a range that can be moved from the current position by the predicted arrival time of the tsunami based on the three-dimensional map information, and the prediction A selection process can be performed in which one place with an altitude above sea level higher than the height of the tsunami is selected as the optimum evacuation place. With this configuration, since the device presents an appropriate evacuation site, the user can evacuate appropriately to the presented evacuation site.

Further, the calculating means is within a range that can be moved from the current position by the predicted arrival time of the tsunami based on the three-dimensional map information, and the altitude above sea level is higher than the predicted tsunami height. First, an extraction process for extracting a high place as an evacuation place candidate is performed. It is also possible to perform selection processing for selecting one evacuation site as the optimum evacuation site from among the evacuation site candidates extracted in the previous period. The processing speed can be increased by specifying the evacuation site in such a two-step process.

The calculation means performs a third calculation process for obtaining an optimum evacuation route from the current position to the selected optimum evacuation place, and the display means obtains the optimum route to the destination. And the optimum evacuation route to the optimum evacuation site can be overlaid on the map. The effect is the same as in the first embodiment.

As described above, by configuring the navigation device as described above, a position higher than the expected height of the tsunami can be obtained based on the sea level of the current position and the sea level included in the map information even if the evacuation information is not held in advance. It becomes possible to identify the optimum evacuation place and guide the route as the new evacuation place.

In the navigation device, a range that can be affected by the tsunami around the current position is specified based on the current position information, the tsunami information, and the map information, and visually displayed to the user. Therefore, it is possible to prevent a user who is outside the range that can be damaged by the tsunami from accidentally entering the range that can be damaged by the tsunami.

In addition, if the user accidentally enters the area affected by the tsunami from outside the area affected by the tsunami, a warning sound may be generated from a speaker (not shown). That is, when the calculation unit 150 determines that the current position is within the range that can be affected by the tsunami based on the position information input from the position detection unit 110, the calculation unit 150 stores a predetermined warning stored in the storage unit 130. It is even better if the sound is read and played and the user is alerted from the speaker.

Also, it is better to use an algorithm that identifies the evacuation site as an evacuation site inland or at a higher altitude than the boundary of the area that can be affected by the tsunami, so that evacuated cars and people are not congested It is.

Further, in the above description, the case where two types of drawing patterns are displayed on the map in the range where the evacuation recommendation and the alert are issued has been described. It is also possible.

That is, the disaster information management center continues to transmit in real time position data, more specifically GPS data, of the current front line of the tsunami captured by satellites and sensors placed at each location to each navigation device.

The receiving unit of the navigation device receives real-time position information indicating the current position of the tsunami and outputs it to the calculating unit. The calculation unit identifies the current tsunami position based on the position information. More specifically, the boundary of the first wavefront of the tsunami is calculated by linearly storing and connecting a plurality of GPS data included in the position information. The display unit may be configured to display the identified tsunami position on a map with a third drawing pattern.

By doing this, it is possible to visually show in real time how long the tsunami will reach the current location to those who are late in evacuation, so urgent evacuation or urgently nearby buildings It is possible to deal with running away. This is because the speed of the tsunami is equal to or greater than the speed of the car, and even if such an emergency action is taken after the tsunami enters the field of view, it is not in time. However, recognizing the forefront of the tsunami can increase the possibility of emergency avoidance and reduce human damage to a minimum.

In addition, the disaster information management center broadcasts tsunami photographs acquired by image sensors, etc. to each navigation device, and the receiving unit of the navigation device receives the photos and displays the photos on the display unit. May be.

Tsunamis often regret after seeing their size. By seeing the actual image of the tsunami that is pushing several hundred meters away, the user who has been evacuated by looking at the terrain around the size of the tsunami can see what action will increase the survival rate Judgment can be made.

(Embodiment 3)
The navigation apparatus 400 according to the third embodiment has a configuration that can newly correct a evacuation route in real time using information that is additionally sent from the outside.

FIG. 17 is a block diagram illustrating a configuration of the navigation device 400 according to the third embodiment. The navigation device 400 includes a position detection unit 110, a storage unit 120, an input unit 130, a reception unit 140, a calculation unit 150, a display unit 160, and a communication unit 470. A part of the same blocks as those of the navigation device 100 will not be described.

The communication unit 470 generates a packet having the optimum evacuation site obtained by the calculation unit 150 as data, and transmits the packet to the outside using a pre-registered IP address as a destination. Here, the destination of the packet is the IP address of the server of the disaster information management center that adjusts the evacuation site.

After transmitting emergency information, the disaster information management center takes statistics of the optimum evacuation sites transmitted from a plurality of navigation devices. Here, when there is a bias in the optimum evacuation place set independently by each navigation device based on the emergency information, the disaster information management center transmits the evacuation place correction instruction information. Here, the evacuation site correction instruction information includes information for specifying an evacuation site with a bias.

The receiving unit 140 of the navigation device 400 receives the evacuation site correction instruction information following the emergency information, and outputs the information to the calculating unit 150.

The calculating unit 150 matches the evacuation site that is the same as the evacuation site for which the correction request included in the evacuation site correction instruction information input from the receiving unit 140 is matched with the optimum evacuation site obtained based on the emergency information. It is determined whether or not. If it is determined that they match, it is determined that the evacuation site is inappropriate as an optimum evacuation site, and a calculation process is performed to newly find an optimum evacuation site from among evacuation site candidates excluding the evacuation site. .

By comprising in this way, it can adjust that an evacuee rushes to a specific evacuation place.

The disaster information management center transmits the evacuation site correction instruction information from the statistics of the population considered to be in the area and the information on the optimum evacuation site obtained from each device sent from the navigation device. Judge whether or not. Since not all navigation devices have the transmission function, there is a possibility that appropriate correction cannot be made based on the number of “optimum evacuation information” sent from each device. Therefore, the deviation value is calculated for each evacuation site after taking into consideration the surrounding evacuation site candidates, etc., and it is predicted that there is a possibility that the evacuation area will be flooded with an evacuation site whose deviation value is higher than the standard. The evacuation site correction instruction information is transmitted to the evacuation site. You may comprise in this way.

Note that the navigation device that has received the evacuation site correction instruction information may determine whether to change the evacuation site using a certain random function. This is because, if the evacuation site is changed in all the navigation devices that have received the evacuation site correction instruction information, the evacuation site may be depopulated and the surrounding evacuation sites may be similarly crowded.

In addition, the selection and correction of the optimum evacuation site performed by the calculation unit 150 is still better when performed according to the following flow. First, the calculation unit 150 extracts evacuation site candidates that can be evacuated within the time required from the current position based on the emergency information from the blame information, and quantifies each extracted evacuation site.

Here, the evacuation site closer to the current position is given a high score. Also, high scores are given to evacuation sites that are highly resistant to disasters. For example, if the disaster is a tsunami, a high score is given to an evacuation site that can withstand a tsunami far higher than the expected tsunami. On the other hand, an evacuation site with almost no margin is given a low score. In addition, the number of evacuation shelters and the environment will be taken into consideration.

The following situation will be described as an example. Here, it is assumed that there is a former having a navigation device X and a second having a navigation device Y. The disaster that occurred is a tsunami.

Here, it is assumed that five candidates A to E that can be evacuated from the current position to the tsunami arrival time are extracted in the former navigation apparatus X. Here, it is assumed that A is 81 points, B is 15 points, C is 45 points, D is 92 points, and E is 63 points by quantification for each evacuation site. In this case, the calculation unit 150 of the navigation device X identifies D having the highest score as the optimum evacuation site. Information about the evacuation site D is displayed on the display unit 160 and transmitted from the communication unit 470 to the disaster information management center. Note that the numerical values of the evacuation site candidates A to E obtained by the calculation unit and information on the evacuation site candidates to be written are temporarily stored in a temporary storage unit (not shown).

Similarly, it is assumed that three candidates C, D, and H that can be evacuated from the current position to the tsunami arrival time are extracted in the navigation device Y of B. Here, it is assumed that C is 52 points, D is 94 points, and H is 25 points by the numerical value for each evacuation site. In this case, the calculation unit 150 of the navigation device Y also specifies D having the highest score as an appropriate evacuation site. Information about the evacuation site D is displayed on the display unit 160 and transmitted from the communication unit 470 to the disaster information management center.

The disaster information management center knows that the evacuation site D is selected as the optimum evacuation site by both the navigation devices X and Y from the received information regarding the optimum evacuation site. Then, the evacuation site management apparatus of the disaster information management center creates evacuation site correction instruction information on the assumption that evacuees concentrate on the evacuation site D. Here, the evacuation site correction instruction information indicates that an appropriate value as the evacuation site has dropped by 15 points because there is a possibility that evacuees may concentrate on the evacuation site D. It should be noted that how much the appropriate value has fallen is based on the deviation between the deviation value and the reference value obtained by the evacuation site management device based on the “information on the optimum evacuation site” received from each device. It is determined. The evacuation site correction instruction information including the drop point is transmitted to each device. FIG. 18 shows the evacuation site correction instruction information. In the evacuation site correction instruction information, a management number uniquely assigned to each evacuation site is associated with a correction point value for the evacuation site. The management number included in the evacuation site correction instruction information corresponds to the management number described in the evacuation information shown in FIG.

The receiving unit 140 receives the evacuation site correction instruction information and outputs it to the calculating unit 150. The calculation unit 150 performs again the process of obtaining the optimum evacuation place based on the instruction content “15 points minus correction for evacuation place D” included in the evacuation place correction instruction information. Specifically, the numerical values of the evacuation site candidates A to E temporarily stored in 100 million copies are read and the above correction is performed.

In this case, the navigation device X has 77 points, and the navigation device Y has 79 points. Then, the calculation unit 150 of each device performs a calculation process for obtaining an optimum evacuation place again with the value after the point correction. In the navigation device X, 81 evacuation sites A are the most evacuation sites with the highest points. Accordingly, the navigation device X identifies the evacuation site A obtained by the recalculation process as the optimum evacuation site, and proceeds with the calculation process for obtaining the optimum route, the display process on the display unit 160, and the like. On the other hand, in the navigation device Y, the point of the evacuation site D is still the highest even if the point correction is performed. Therefore, the navigation device Y does not change the evacuation site.

By comprising in this way, it can prevent that an evacuee concentrates on the same evacuation place.

In the above description, the case where minus correction is performed for an evacuation place where concentration is expected is described. However, a configuration in which plus correction is performed for an evacuation place where a relatively empty space is expected may be used.

Moreover, in the said Embodiment 1-3, although the case where one optimal evacuation place was selected was demonstrated, it is not limited to this. Of course, it is possible to specify a plurality of evacuation sites satisfying a certain standard as optimum evacuation sites and present them to the user. That is, in the present invention, the optimum evacuation site is not particularly limited to one, and represents a plurality of evacuation sites that satisfy a certain standard. With this configuration, the user can select the most convenient evacuation site from among a plurality of evacuation sites satisfying the qualification as an evacuation site, and the effect of dispersing the concentration of evacuees can be expected. This is because an evacuation site specified by a certain navigation device is highly likely to be specified as an evacuation site in other navigation devices. However, when the user finally selects from a plurality of candidates, a dispersion effect can be expected.

(Embodiment 4)
In the disaster prevention system according to the present embodiment, in contrast to each navigation device seeking an evacuation location by broadcasting emergency information, the central computer device having a high processing capacity is suitable for each navigation. It is a system that requests and notifies. Note that cloud computing can be used for the central computer device.

FIG. 19 is a block diagram showing a configuration of the central computer device 500. The central computer device 500 includes a storage unit 510, an input unit 520, a calculation unit 530, and a transmission unit 540.

The storage unit 510 stores user data that is information of a user having a navigation device. In the user data, in addition to the user number uniquely assigned to each user, the current position of the user transmitted from the user at a predetermined frequency is stored as user data. The storage unit 510 also stores evacuation information that summarizes evacuation sites in an emergency.

The input unit 520 inputs emergency information issued from a disaster information management center or the like.

The calculation unit 530 obtains an optimum evacuation site for each user based on the user data and the emergency information.

The transmission unit 540 transmits the evacuation guidance information in which the user number and the evacuation site most suitable for the user are associated with each other to the navigation device of the user.

FIG. 20 is a block diagram of the navigation device 600 according to the present embodiment. The navigation device 600 includes a receiving unit 610, an extracting unit 620, and a display unit 630.

The receiving unit 610 receives the evacuation guidance information.

Whether the extraction unit 620 includes information addressed to the own device in the evacuation guidance information received by the receiving unit 610 using a user number corresponding to the own device stored and managed in a storage unit (not shown). Do a search for how. When the same user number as the user number corresponding to the own device is included in the evacuation guidance information, the evacuation place paired with the user number is extracted.

The display unit 630 displays the evacuation place extracted by the extraction unit 620.

As described above, the central computer device having a high processing capacity may be caused to perform processing for obtaining the evacuation place. According to this configuration, since the central computer device collectively determines the evacuation locations of a plurality of users, it is easy to avoid the concentration of refugees at one location. However, if an emergency situation occurs, the number of affected users will be enormous, and prompt guidance will be required.If a central computer device with specifications that meet this requirement cannot be prepared, The disaster prevention systems of forms 1 to 3 are more excellent.

The navigation device, guidance method, and disaster prevention system of the present invention have been described above. We learned a lot from the tsunami that hit Japan this time. In one video, the tsunami went back up the river and attacked from two directions, and a car was swallowed by the tsunami without being able to properly determine where to evacuate. Also, according to another video, it was not possible to properly grasp the situation where the tsunami was approaching until the tsunami entered sight, so there were some cars running in the opposite lane despite the tsunami hitting. . The speed of the tsunami is equal to or higher than the speed of the car, and it is almost impossible to evacuate from the stage where the tsunami was caught in view. These things prove how difficult it is to evacuate properly against a tsunami.

We have not learned about disasters that can be experienced once in their lives or the scales of which cannot be predicted, so if disasters actually occur, no matter how we raise awareness through disaster drills If you evacuate at your own discretion, enormous human damage is inevitable.

With regard to the tsunami, even if a disaster prevention warning is issued and a message saying “Evacuate to a high place” is received, it is appropriate to determine how high the place should be evacuated and where to evacuate It can't be done, leading to confusion and misunderstanding.

On the other hand, it is possible to evacuate appropriately by using the navigation device of the present invention. In addition, since the navigation device of the present invention can be readily incorporated into a mobile phone terminal or car navigation device that is already a familiar product without cost, construction of an emergency disaster prevention system and a low budget Construction is possible. In Japan, where the coastline stretches enormously, it is not realistic to stretch a solid breakwater. The tsunami may exceed 30m depending on the location, and it is impossible to stretch a 30m breakwater in preparation for such a case. In addition, since the existence of a solid breakwater is reassuring and the evacuation action is slowed down, human damage when a breakwater is broken by an unexpectedly large tsunami can cause the worst case. From this point of view, it seems that it is more correct disaster prevention to enable proper guidance.

In addition, it cannot be overemphasized that the description in each said embodiment shows an example, and can change suitably. It is also possible to combine the embodiments.

  The digital map information stored in the storage unit can use commercially available map information as it is.

The navigation device described in each of the above embodiments is a so-called guidance device, and can take the form of a car navigation device, a mobile terminal device, a smartphone, a television receiver, a personal computer, and other various devices having the above-described configuration. Needless to say.

The emergency information described above may be transmitted by FM multiplex broadcasting, or may be transmitted using any other communication medium such as an optical beacon, a radio beacon, a digital TV (voice) broadcast, or the like. In this case, the receiving unit of the navigation device includes an FM broadcast receiving unit that receives a signal from an FM broadcast station, an optical beacon receiving unit that receives a signal from an optical beacon, a radio beacon receiving unit that receives a signal from a radio beacon, and digital broadcasting. It is replaced with a digital broadcast receiving unit that receives In addition, the reception unit that receives emergency information may be incorporated as a part of the in-vehicle image recording device, or may be configured to be connected to the navigation device via an interface as one other device. .

  Note that a camera may be attached to the navigation device. The configuration may be such that when the emergency information is received, the camera automatically operates and the images are sequentially stored in the storage unit. In addition, the navigation device may be provided with communication means for communicating with an external communication device. For example, an image captured by the camera may be transmitted to the outside by the communication unit. The images sent from each navigation device are sent to the disaster management center, where the evacuation status of vehicles and people to be evacuated can be grasped in real time and more appropriate instructions can be given. It is good because it can reduce damage.

In the navigation device of each embodiment, the position detection unit, the reception unit, the storage unit, the display unit, the calculation unit, the communication unit, and the like may be designed to be incorporated in the apparatus main body. And may be designed as an individual device in a state where it can be connected via a connector or a communication means.

  The recording unit does not have to be a single recording medium, and the recording unit may be configured by combining two or more recording media. For example, two types of recording media, HDD and flash memory, may be configured as the recording unit. Among them, map information having a relatively large capacity may be stored in the HDD, and evacuation information having a relatively small capacity that is required to be read at a high speed in an emergency may be stored in the flash memory.

Further, the position detection unit, the reception unit, the calculation unit, and the like described above may be realized using a semiconductor integrated circuit. Here, the integrated circuit may be referred to as LSI, VLSI, or ULSI.

Further, the calculation unit may be implemented as a part of the CPU. Here, the CPU may be referred to as a microprocessor unit, a central control unit, or the like. Each calculation process performed by the calculation unit may be performed by hardware, or may be configured to be executed by software using a program. The central control unit corresponding to the calculation unit may be configured to perform a calculation process performed by the calculation unit by reading, decoding, and executing a program recorded in a recording unit (not shown).

That is, a first reading step for reading emergency information, a second reading step for reading evacuation information in which a plurality of pieces of information relating to emergency evacuation locations are collected, a third reading step for reading the current position, the emergency information, and the current A guidance program that causes a computer to execute a calculation process for calculating an optimum evacuation site from among a plurality of evacuation sites included in the evacuation information based on the position of the position is naturally within the technical scope of the present invention. include. Further, based on the fourth reading step for reading map information, the read current position, the read map information, and the obtained optimum evacuation place, the optimum from the current position to the optimum evacuation place is obtained. A second calculation step for performing a calculation process for obtaining an appropriate evacuation route, and a display step for performing a process for overlaying the obtained optimum evacuation route on a map drawn by reading the map information. Needless to say, programs and the like are also included in the present invention. In addition, naturally the guidance program and the guidance method which make a computer perform each process in the flowchart shown in the figure of the said description are contained in this invention.

In addition, the design can be changed as appropriate without departing from the scope of the present invention.

  The navigation device according to the present invention can be used in a field where it is required that a user whose judgment power is reduced to take an appropriate action when an emergency such as a disaster occurs.

Block diagram of the disaster prevention system according to Embodiment 1 of the present invention Diagram showing an example of emergency information The figure which shows an example of the disaster classification contained in emergency information The figure which shows an example of the disaster information contained in emergency information The figure which shows another example of disaster information included in emergency information The figure which shows another example of disaster information included in emergency information The block diagram of the navigation apparatus concerning Embodiment 1 of the present invention. Figure showing an example of evacuation information The figure which shows an example of the screen which a display part displays The flowchart which shows operation | movement of the navigation apparatus which concerns on Embodiment 1 of this invention. The block diagram of the navigation apparatus of another form which concerns on Embodiment 1 of this invention. Block diagram of a navigation device according to Embodiment 2 of the present invention The figure which shows an example of the screen which a display part displays The flowchart which shows operation | movement of the navigation apparatus which concerns on Embodiment 2 of this invention. Cross section showing the area affected by the tsunami Plan view showing the area affected by the tsunami Block diagram of a navigation device according to Embodiment 3 of the present invention The figure which shows an example of evacuation site correction instruction information The block diagram of the central processing unit which concerns on Embodiment 4 of this invention Block diagram of a navigation device according to Embodiment 4 of the present invention

DESCRIPTION OF SYMBOLS 10 Sensor 20 Disaster information management center 30 Transmission apparatus 40 Navigation apparatus 100 Navigation apparatus 110 Position detection part 120 Storage part 130 Input part 140 Reception part 150 Calculation part 160 Display part 200 Navigation apparatus 300 Navigation apparatus 310 Position detection part 400 Navigation apparatus 470 Communication Unit 500 central computer 510 storage unit 511 user data 512 evacuation information 520 input unit 530 calculation unit 540 transmission unit 600 navigation device 610 reception unit 620 extraction unit 630 display unit

Claims (16)

Position detection means for detecting the current position;
Storage means for storing evacuation information in which a plurality of information on evacuation sites in an emergency are collected;
Receiving means for receiving emergency information;
Calculation means for performing a first calculation process for obtaining an optimum evacuation site from a plurality of evacuation sites included in the evacuation information based on the emergency information and the current position;
Display means for displaying the determined optimum evacuation site;
A navigation device comprising: The storage means further stores map information,
The calculation means performs a second calculation process for obtaining an optimal route from the current position to the optimal evacuation site based on the map information and the current position;
The display means displays an optimal route to the optimal evacuation site;
The navigation device according to claim 1. The display means displays an overlay of the optimum route to the optimum evacuation site on a map drawn by reading the map information,
The navigation device according to claim 1 or 2. It further comprises an input means for inputting a destination,
The calculation means performs a third calculation process for obtaining an optimum route from the current position to the destination based on the input destination, the detected current position, and the map information. ,
The display means overlay-displays an optimum route to the destination on a map that is read by drawing the map information.
The navigation device according to claim 3. When the display unit displays an optimum route to the destination in an overlay manner, an optimum evacuation to the optimum evacuation site is performed by the second calculation process in the calculation unit based on the received emergency information. When the route is obtained, the overlay display of the optimum route to the destination is canceled and the optimum evacuation route to the optimum evacuation site is displayed on the map.
The navigation device according to claim 4. The emergency information includes at least information about the expected tsunami height, tsunami arrival time and tsunami arrival location,
The calculation means determines whether or not the current position is included in a range affected by the tsunami based on the expected tsunami height, the tsunami arrival location, and the current position included in the emergency information. If it is determined that it is included in the previous period, it can be reached from the current position by the time of the tsunami from among a plurality of emergency evacuation sites included in the evacuation information. The evacuation site is determined as the optimal evacuation site,
The navigation device according to claim 1 or 2. Further comprising transmission means for transmitting information on the optimum evacuation site obtained by the calculation means,
The receiving means further receives evacuation site correction instruction information after receiving the emergency information,
The calculation means obtains an optimum evacuation place next to the optimum evacuation place when the optimum evacuation place obtained in the first calculation process is included in the received evacuation place correction instruction information. Perform the fourth calculation process,
The display means displays the evacuation site obtained in the fourth calculation process;
The navigation device according to claim 1. An input means for inputting the current position;
Storage means for storing the input current position as current position information and storing evacuation information in which a plurality of pieces of information relating to evacuation locations at the time of position emergency are collected;
Receiving means for receiving emergency information;
Calculation means for performing a calculation process for obtaining an optimum evacuation place from a plurality of evacuation places included in the evacuation information based on the emergency information and the current position information;
Display means for displaying the determined optimum evacuation site;
A navigation device comprising: Position detection means for detecting the current position;
Storage means for storing three-dimensional map information;
A receiving means for receiving tsunami information including information on at least expected tsunami arrival time, tsunami arrival location and tsunami height;
Calculation means for performing a first calculation process for obtaining a range that can be affected by a tsunami within a predetermined range from the current position based on the map information and the tsunami information when the tsunami information is received; ,
A display means for overlaying a drawing showing a range that can be affected by the tsunami determined on the map drawn by reading the map information;
A navigation device comprising: It further comprises an input means for inputting a destination,
The calculation means performs a second calculation process for obtaining an optimum route to the destination based on the input destination, the current position, and the map information;
The display means overlay-displays an optimal route to the determined destination on a map drawn by reading map information.
The navigation device according to claim 9. The calculation means is within a range that can be moved from the current position by the predicted arrival time of the tsunami based on the three-dimensional map information, and has an altitude higher than the predicted tsunami height. The selection process to choose one location as the best evacuation site,
The navigation device according to claim 10. Where the calculation means is within a range that can be moved from the current position by the predicted arrival time of the tsunami based on the three-dimensional map information and has an altitude above sea level that is higher than the predicted tsunami height Is extracted as an evacuation site candidate, and a selection process is performed to select one evacuation site as the optimum evacuation site from the evacuation site candidates extracted in the previous period.
The navigation device according to claim 10. The calculation means performs a third calculation process for obtaining an optimal evacuation route from the current position to the selected optimal evacuation site,
The display means cancels the overlay display of the optimum route to the destination, and displays the optimum evacuation route to the optimum evacuation place on a map,
The navigation device according to claim 11 or 12. A first reading step for reading emergency information;
A second reading step of reading evacuation information in which a plurality of pieces of information related to an evacuation area in an emergency are collected;
A third reading step for reading the current position;
A calculation step for performing a calculation process for obtaining an optimum evacuation place from a plurality of evacuation places included in the evacuation information based on the emergency information and the current position;
A guidance program that causes a computer to execute. A fourth reading step for reading map information;
Based on the read current position, the read map information, and the obtained optimum evacuation location, a second calculation is performed for calculating an optimum evacuation route from the current position to the optimum evacuation location. Steps,
A display step for performing a process of overlaying the optimum evacuation route obtained on the map drawn by reading the map information;
The guidance program according to claim 14, further causing the computer to execute. A disaster prevention system composed of a transmission device and a navigation device,
The transmitter is
Comprising transmission means for transmitting emergency information;
The navigation device
Receiving means for receiving the emergency information;
Storage means for storing map information and evacuation information in which a plurality of information on emergency evacuation sites are collected;
Based on the emergency information and the current position, calculating means for obtaining an optimum evacuation place from a plurality of evacuation places included in the evacuation information;
Display means for displaying the determined optimum evacuation site;
A disaster prevention system.

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