JP4066439B2 - Evacuation route providing system, route search server, and portable terminal device - Google Patents

Description

  The present invention is a communication-type navigation system or map display system that uses a mobile terminal device such as a mobile phone, and when the mobile terminal device cannot communicate with a server, such as offline map guidance, route return support, etc. The present invention relates to an evacuation route providing system capable of providing route guidance, a route search server, and a portable terminal device, and in particular, a map from a desired location registered in advance, such as a work place to a home, etc., to a desired location, an evacuation route, and a return home support. The present invention relates to an evacuation route providing system, a route search server, and a mobile terminal device that can be downloaded from a route search server during normal times and displayed on a mobile terminal device offline at the time of a disaster.

  In general, navigation systems that perform route guidance by searching for a route from a desired departure point to a destination are widely used. As such a navigation system, an in-vehicle navigation system mounted on an automobile, a navigation system for a pedestrian who moves using walking and transportation, and the like are known. A system for displaying a map of the vicinity based on the current position is also known. Recently, a communication type system that uses a portable terminal device such as a mobile phone and downloads a guide route or a map from a predetermined information distribution server, a route search server, or the like is widely used as these systems.

  A general navigation device, a route search device and a route search method used in a communication navigation system are disclosed in, for example, the following Patent Document 1 (Japanese Patent Laid-Open No. 2001-165681). This navigation system is configured to send information of departure and destination from a portable navigation terminal to a route search server, and search and guide a route that matches a search condition from road network and traffic network data by the route search server. Has been. As the search condition, there are means for moving from the departure place to the destination, for example, walking, automobile, combined use of railroad and walking, and the route is searched as one of the search conditions.

  The route search server uses roads (routes) of map data as nodes and node positions as the nodes, links connecting the nodes as links, and cost information (distance and required time) for all links as a database. ing. Then, the route search server refers to the database, sequentially searches for links from the departure node to the destination node, and traces the node and link with the smallest cost information of the link as a guide route. The shortest route can be guided to the portable navigation terminal. As such a route search method, a method called label determination method or Dijkstra method is used. Patent Document 1 also discloses a route search method using this Dijkstra method.

  In the navigation system as described above, the guide route distributed to the terminal device by the route search server is data in which node numbers and link numbers to be followed by the user are arranged in order. In order to guide the direction to turn when a user should turn left or right such as an intersection node, the node is set as a guidance point node, and the user is notified by voice or display at the guidance point before the guidance point node. There is also known a navigation system that outputs a guidance to the user.

  In the communication-type navigation system and map display system disclosed in Patent Document 1, the mobile terminal device cannot be displayed unless it communicates with the information distribution server and downloads the map and guide route data. For example, even if it is desired to decide whether to go to a restaurant after downloading a map of a restaurant or the like and confirming the location, communication with the information distribution server is necessary and communication costs are generated. In addition, when the mobile terminal device cannot communicate or is in a place where the radio wave condition is poor, the map information cannot be displayed because the mobile terminal device cannot communicate with the server.

  For this reason, when a disaster such as an earthquake occurs and communication of the mobile phone is restricted, even if it is desired to check the route to the evacuation site with the mobile phone, communication cannot be performed and the information cannot be obtained. In recent years, disasters and incidents that cause great local damage such as earthquakes and terrorism have occurred frequently all over the world, and especially in Asian countries, major disasters such as tsunamis and earthquakes are frequent. Also, as symbolized by terrorism at trade centers in the United States, terrorist damage has been reported in various countries around the world. Such a disaster is also expected to occur in Japan. In particular, earthquakes are thought to occur with a high probability if the location and timing are different.

  In order to cope with this situation, administrative bodies such as local governments set recommended evacuation sites such as parks and schools for each region to ensure the safety of residents in the region and people working in the region. . In addition, recently, a guidebook has been provided to assist people who return home from school or work when an earthquake occurs, so-called “Earthquake Support Map for Metropolitan Area (Shobunsha)”. This guidebook provides assistance for companies who have difficulty returning home, such as evacuation routes recommended by government agencies, water, food, medical services, etc., and convenience stores, etc., according to the direction of returning home from the main location. A map that includes points.

  Further, a mobile phone system that transmits information to a mobile phone and performs evacuation guidance when a disaster occurs is disclosed in the following Patent Document 2 (Japanese Patent Laid-Open No. 2002-111182). In this cellular phone system, when a disaster occurs in a call service area covered by a base station, the service control station is notified of the disaster. Then, the map information together with the disaster information is sent from the service control station to the mobile phone existing in the call service area adjacent to the call service area via the exchange. Thus, the mobile phone displays map information indicating the disaster occurrence area and performs a specific disaster notification at regular time intervals. Further, when the owner of the mobile phone determines that the current location information is required, the current location information is acquired from the service control station. As a result, the mobile phone displays the map of the disaster area and the current position in an overlapping manner.

  Moreover, the disaster prevention system using the portable terminal device at the time of a disaster is disclosed by the following patent document 3 (Unexamined-Japanese-Patent No. 2000-57457) and patent document 4 (Unexamined-Japanese-Patent No. 2005-17027), for example.

  The urban disaster prevention system disclosed in Patent Document 3 includes a plurality of terminals having a function of displaying map information and a current position by a navigation system, and a disaster information center that transmits and receives signals to each of the plurality of terminals. The disaster information center receives disaster information signals sent from terminals and preset information sources, and transmits disaster information edited from the received disaster information signals to each terminal. In addition to displaying the map and positional relationship obtained from the navigation system, disaster information is displayed on this map.

  Further, in the evacuation guidance system disclosed in Patent Document 4, when the guidance host device receives an evacuation guidance request and location information from a GPS mobile phone having a position detection means, the location information is stored in a database. The disaster information database and the map information database are searched to find a less dangerous route to the evacuation site near the location, and the GPS mobile phone 3 is configured to notify the guidance information to the evacuation site together with the map information. In the event of a disaster, evacuation guidance is made promptly and safely.

JP 2001-165681 A (FIGS. 1 and 2) JP 2002-111182 A (FIG. 1) JP 2000-57457 A (FIG. 1) Japanese Patent Laying-Open No. 2005-17027 (FIG. 1)

  However, the communication system, navigation system, map display system, and the like disclosed in Patent Documents 1 to 4 are configured on the assumption that the mobile terminal device and the server transmit and receive predetermined information through communication. ing. Therefore, a communication cost is incurred every time communication is performed with the server. Further, when the mobile terminal device cannot communicate or is in a poor radio wave location, it cannot communicate with the server and cannot display map information or download necessary information.

  In particular, when a mobile phone is used as a mobile terminal device, it is predicted that the communication infrastructure is severed in and around the stricken area during a disaster such as an earthquake. In addition, because many mobile terminal users make calls to confirm the safety of family members, friends, and acquaintances, the network communication load increases, and if the communication load exceeds a certain value, disaster relief and emergency communication In order to prioritize the communication, measures are taken to restrict the communication of general users on the telecommunications carrier side. For example, it is often experienced that it becomes difficult to make a mobile phone after an earthquake. In such a state, even if you want to display a map of the evacuation site using a mobile terminal device, you cannot download the map information, and you will not be able to get guidance on the evacuation site or guidance on the route to the evacuation site There was a problem.

  There are methods of using printed materials such as the map for returning home at the time of the earthquake disaster, the evacuation site guide map at the time of disaster, and the evacuation route guide map. There is a problem that it is useless in some cases. In addition, since information on these printed materials becomes older with time, there is a problem in that it is necessary to always purchase and prepare the latest information. On the other hand, it is highly probable that the mobile phone is always carried around, and it is preferable that the mobile phone can be used as an effective tool even in the event of a disaster.

  As a result of various studies to solve the above problems, the inventor of the present application normally displays a map, a evacuation route, a guidance route for returning home, etc. If you download it from a route search server from time to time and display it offline on a mobile terminal device in the event of a disaster, you will be able to provide route information such as map information, route guidance to a predetermined location, and return home support offline. The invention has been completed.

  That is, according to the present invention, in a communication navigation system or map display system using a mobile terminal device such as a mobile phone, when a disaster occurs in the communication infrastructure, the mobile terminal device cannot communicate with the server. Even so, an object is to provide an evacuation route providing system, a route search server, and a mobile terminal device capable of performing route guidance such as a map, a evacuation route, and a return home support from a desired point to a desired point offline. It is what.

In order to solve the above-mentioned problem, the invention according to claim 1 of the present application is
A portable terminal device having point registration means for pre-registering an evacuation route search desired point for which evacuation route search is desired, and route guidance request means for requesting the route search from the route search server by designating from the desired point to the desired point And a route search server provided with evacuation route data for searching for an evacuation route,
The portable terminal device includes an evacuation route storage unit that stores an evacuation route distributed from a route search server, and a display unit that displays the evacuation route.
The route guidance requesting unit requests the route search server to search for an evacuation route between evacuation route search desired points periodically registered in the point registration unit at normal times, and the evacuation route received from the route search server The evacuation route is stored in the evacuation route storage means, and the evacuation route stored in the evacuation route storage means at the time of a disaster is displayed on the display means.

The invention according to claim 2 of the present application is the evacuation route providing system according to claim 1,
The portable terminal device further includes GPS processing means for calculating the current position, mode selection means for designating the disaster evacuation mode, and passage route recording means for recording a link of the evacuation route that has passed.
Based on the current position calculated by the GPS processing means, the link of the evacuation route that has passed is determined and recorded in the passage route recording means,
Passages that are in a range where the mobile terminal device can communicate with the mobile terminal device using the wireless communication network and that are operating in the disaster evacuation mode are captured and recorded in the passage route recording means of each other The information of the link is exchanged, the information of the exchanged passing link is added, and the evacuation route is displayed on the display means.

The invention according to claim 3 of the present application is the evacuation route providing system according to claim 1 or claim 2,
Evacuation routes receiving during normal includes the evacuation route searching desired locations registered in the location registration means, out of the registered refuge database with the route search server, close the evacuation of the evacuation route search desired point It includes an evacuation route between places.

The invention according to claim 4 of the present application is the evacuation route providing system according to claim 1 or 2,
Guidance route the route search server transmits is characterized in that path recommended for the evacuation of the disaster is searched preferentially.

The invention according to claim 5 of the present application is the evacuation route providing system according to claim 1 or 2,
The evacuation routes between the respective evacuation route search desired points are a plurality of candidate routes.

The invention according to claim 6 of the present application is
A point registration means for registering a desired evacuation route search desired point for which evacuation route search is desired, a route guidance request means for requesting a route search from the desired point to the route search server, and a route search server and evacuation route storing means for storing the escape route distributed from, display means for displaying the evacuation routes, and the route guidance request means, evacuation route searching registered periodically to the spot registration means during normal The route search server is requested to search for an evacuation route between desired points, the evacuation route received from the route search server is stored in the evacuation route storage means, and the evacuation route stored in the evacuation route storage means at the time of a disaster is A route search server connected via a network to a mobile terminal device displayed on a display means,
The route search server includes evacuation route data for searching for an evacuation route, and when a search request for an evacuation route is received from the mobile terminal device in a normal state, the route search server is registered in the point registration unit based on the evacuation route data. The evacuation route search is performed by searching for an evacuation route between desired points and distributing it to the portable terminal device.

The invention according to claim 7 of the present application is
A point registration means for registering a desired evacuation route search desired point for which evacuation route search is desired, a route guidance request means for requesting a route search from the desired point to the route search server, and a route search server The evacuation route storage means for storing the evacuation route delivered from, the display means for displaying the evacuation route, the GPS processing means for calculating the current position, the mode selection means for designating the evacuation mode at the time of the disaster, and passed comprising a passing path recording means for recording the link escape routes, and the route guidance requesting means, the searching of periodically the spot registration means registered evacuation route search desired point between escape routes during normal path The evacuation route requested to the search server and received from the route search server is stored in the evacuation route storage means, and the evacuation route that has passed based on the current position calculated by the GPS processing means is stored. Another link of the route is determined and recorded in the passage route recording means, and is in a range where the wireless communication network can be used to communicate with the own portable terminal device, and is operated by specifying the disaster evacuation mode. The display unit captures the terminal device, exchanges the information of the passing links recorded in the passing route recording means of each other, adds the information of the exchanged passing links, and stores the evacuation route stored in the evacuation route storage means at the time of the disaster A route search server connected to the mobile terminal device displayed on the network via a network,
The route search server includes evacuation route data for searching for an evacuation route, and when a search request for an evacuation route is received from the mobile terminal device in a normal state, the route search server is registered in the point registration unit based on the evacuation route data. The evacuation route search is performed by searching for an evacuation route between desired points and distributing it to the portable terminal device.

The invention according to claim 8 of the present application is the route search server according to claim 6 or 7,
The route search server includes point registration means for registering an evacuation route search desired point where the mobile terminal device desires an evacuation route search .

The invention according to claim 9 of the present application is the route search server according to claim 6 or claim 7,
The evacuation routes to the receiving mobile terminal device during normal includes the evacuation route searching desired locations registered in the location registration means, out of the shelter, which is registered in the database provided in the route search server, the evacuation route search It includes an evacuation route to and from an evacuation site near the desired point.

The invention according to claim 10 of the present application is the route search server according to claim 6 or 7,
Guidance route the route search server transmits is characterized in that path recommended for the evacuation of the disaster is searched preferentially.

The invention according to claim 11 of the present application is the route search server according to claim 6 or claim 7,
The evacuation routes between the respective evacuation route search desired points are a plurality of candidate routes.

The invention according to claim 12 of the present application is
A mobile terminal device connected via a network to a route search server having evacuation route data for searching for an evacuation route,
The mobile terminal device includes a point registration unit that pre-registers an evacuation route search desired point for which an evacuation route search is desired, and a route guidance request that requests a route search from the desired point to the desired point and requests a route search to the route search server. Means, evacuation route storage means for storing the evacuation route delivered from the route search server, and display means for displaying the evacuation route,
The route guidance requesting unit requests the route search server to search for an evacuation route between evacuation route search desired points periodically registered in the point registration unit at normal times, and the evacuation route received from the route search server The evacuation route is stored in the evacuation route storage means, and the evacuation route stored in the evacuation route storage means at the time of a disaster is displayed on the display means.

The invention according to claim 13 of the present application is the portable terminal device according to claim 12,
The portable terminal device further includes GPS processing means for calculating the current position, mode selection means for designating the disaster evacuation mode, and passage route recording means for recording a link of the evacuation route that has passed.
Based on the current position calculated by the GPS processing means, the link of the evacuation route that has passed is determined and recorded in the passage route recording means,
Passages that are in a range where the mobile terminal device can communicate with the mobile terminal device using the wireless communication network and that are operating in the disaster evacuation mode are captured and recorded in the passage route recording means of each other The information of the link is exchanged, the information of the exchanged passing link is added, and the evacuation route is displayed on the display means.

The invention according to claim 14 of the present application is the portable terminal device according to claim 12 or claim 13, wherein
The evacuation route received in normal time is between the evacuation route search desired point registered in the point registration means and the evacuation site near the point among the evacuation sites registered in the database provided in the route search server. The evacuation route is included.

The invention according to claim 15 of the present application is the portable terminal device according to claim 12 or claim 13, wherein
Guidance route the route search server transmits is characterized in that path recommended for the evacuation of the disaster is searched preferentially.

The invention according to claim 16 of the present application is the portable terminal device according to claim 12 or claim 13, wherein
The evacuation routes between the respective evacuation route search desired points are a plurality of candidate routes.

The invention according to claim 17 of the present application is the portable terminal device according to claim 13,
The disaster evacuation mode set by the mode selection means is enabled when the route search server cannot be connected.

In the invention according to claim 1, the evacuation route providing system includes a portable phone having point registration means for preliminarily registering an evacuation route search desired point for which evacuation route search is desired and route guidance request means for requesting the route search for the evacuation route. The mobile terminal device includes an evacuation route storage means for storing an evacuation route distributed from the route search server, and an evacuation route. Display means for displaying, and the route guidance request means requests the route search server to search for an evacuation route between evacuation route search desired points periodically registered in the point registration means at normal times, and from the route search server The received evacuation route is stored in the evacuation route storage means, and the evacuation route stored in the evacuation route storage means at the time of disaster is displayed on the display means.
With this configuration, even when communication between the mobile terminal device and the route search server is impossible during a disaster, the mobile terminal device reads the desired evacuation route from the evacuation route storage means and displays it without communicating with the route search server. The evacuation route can be confirmed offline by displaying on the means.

According to a second aspect of the present invention, in the evacuation route providing system according to the first aspect, the mobile terminal device further includes GPS processing means for calculating the current position and mode selection for designating the evacuation mode at the time of disaster. Means and a passage route recording means for recording the link of the evacuation route that has passed, and determining the link of the evacuation route that has passed based on the current position calculated by the GPS processing means and recording it in the passage route recording means. The other mobile terminal devices that exist within the range that can communicate with the mobile terminal device using the wireless communication network and that operate by specifying the disaster evacuation mode were captured and recorded in the passage route recording means of each other The information on the passing link is exchanged, the information on the exchanged passing link is added, and the evacuation route is displayed on the display means.
In this way, the mobile terminal device obtains the information on the passing link from the other mobile terminal devices, adds the information on the passing link and displays the evacuation route on the display means, so that the user can evacuate the evacuation route ahead of the current position. Therefore, the user can continue walking on the displayed evacuation route with certainty because the route range that other portable terminal devices can pass through can be determined in advance. In addition, when the road remains unconfirmed, the user displays the second candidate evacuation route and observes the state of the passage confirmation. If the passage confirmation is confirmed, the user decides to change to the evacuation route. You will also be able to.

According to a third aspect of the present invention, in the evacuation route providing system according to the first or second aspect, the evacuation route that is normally received is an evacuation route search desired point registered in the point registration means, The evacuation route between the evacuation sites in the vicinity of the evacuation route search desired point among the evacuation sites registered in the database provided in the route search server is included. As a result, the portable terminal device can display the evacuation route to the spot registered in the spot registration means, for example, the evacuation route near the house offline.

The invention according to claim 4, in evacuation route providing system according to claim 1 or claim 2, the guide route which the route search server transmits the route to be recommended for evacuation during disaster priority Searched for. As a result, the mobile terminal device can display offline an evacuation route that has little influence on evacuation during a disaster, such as an evacuation route recommended by the government.

In the invention according to claim 5, in the evacuation route providing system according to claim 1 or 2, the evacuation route between the respective evacuation route search desired points is a plurality of candidate routes. Accordingly, the portable terminal device can display an alternative evacuation route offline when the displayed evacuation route includes a section that cannot pass due to a collapse of a bridge or the like.

  In the invention concerning Claim 6 and Claim 7, the route search server which comprises the evacuation route provision system concerning Claim 1 and Claim 2, respectively can be provided now.

In the invention according to claim 8, in the route search server according to claim 6 or claim 7, the route search server registers an evacuation route search desired point where the mobile terminal device desires an evacuation route search. A point registration means is provided. Thereby, the mobile terminal device can receive the delivery of the evacuation route from the route search server in a normal time without providing the point registration means.

  In the invention concerning Claim 9-Claim 11, the route search server which comprises the evacuation route provision system concerning Claim 3-Claim 5, respectively can be provided now.

  In the inventions according to the twelfth to sixteenth aspects, it is possible to provide portable terminal devices that constitute the evacuation route providing system according to the first to fifth aspects.

  In the invention according to claim 17, in the mobile terminal device according to claim 13, the disaster evacuation mode set by the mode selection unit is made effective when the route search server cannot be connected. As a result, it is possible to obtain information about the passing link only from other portable terminal devices that are moving along the evacuation route at the time of a disaster, and it is possible to accurately determine the state of the passing route.

  Hereinafter, specific examples of the present invention will be described in detail with reference to examples and drawings. However, the embodiment described below exemplifies an evacuation route providing system and a portable terminal device for embodying the technical idea of the present invention, and the present invention is specified to the evacuation route providing system and the portable terminal device. However, the present invention is equally applicable to the evacuation route providing system and the portable terminal device according to other embodiments included in the claims.

  An evacuation route providing system 10 according to a first embodiment of the present invention includes a mobile terminal device 20 including a mobile phone connected via a network 12 such as the Internet and a route search server 40 as shown in FIG. Has been.

  The route search server 40 is a main control unit 41, communication means 42, distribution data editing means 43, route search means 44, guidance data 45, map data 46, road network data 47, traffic network, like a general navigation server. Data 48 and evacuation route data 49 are provided. The present embodiment is different from a general route search server in that evacuation route data 49 is provided as network data for route search.

  Evacuation route data is provided for evacuation routes recommended by governmental agencies according to the direction of return from the main area (returning home direction), places where water, food, medical services, etc. can be obtained, and support for companies such as convenience stores to assist in returning home The route includes points. This evacuation route data is data composed of nodes, links, and the like in the same way as road network data used for normal route search, and mainly a main road is set. The route from the specific work place to the evacuation route and the route from the evacuation route to the specific home are searched with reference to the road network data.

  When searching for an evacuation route, it is not the route that has the shortest accumulated link cost as in a normal route search. For example, priority is given to an evacuation road recommended by the government or a route with a road width greater than a predetermined width. Search for an appropriate route as an evacuation route during a disaster. For this purpose, various attribute data (for example, recommended evacuation roads, road widths, etc.) are added to the links constituting the road network data, and a search is made for links having appropriate attributes. Good. In addition, the link cost of a road recommended as an evacuation route is set to a different value compared to a general road, and in evacuation route search, evacuation route data 49 set with a different link cost is incorporated into the road network data to perform a route search. You may comprise as follows.

  Then, in the mobile terminal device 20, the location (name / position (latitude / longitude)) such as a sports club or an English conversation school that goes to home or work regularly is registered, and an evacuation route search is performed in normal times. Download evacuation routes and maps between points. By performing this periodically, the evacuation route data stored in the mobile terminal device 20 can always be maintained at the latest data. Even when a disaster actually occurs and the mobile terminal device 20 cannot communicate with the route search server 40, the evacuation route and map stored in the mobile terminal device 20 can be displayed offline.

  On the other hand, the mobile terminal device 20 includes a main control unit 21, a communication unit 22, a GPS processing unit 23, a route guidance request unit 24, a point registration unit 25, an evacuation route storage unit 26, a temporary storage unit 27, an operation / input unit 28, The display unit 29 and the audio output unit 31 are provided. In the present embodiment, the point that the evacuation route storage means 26 is provided is different from a general portable terminal device.

  The portable terminal device 20 includes a point registration unit 25, and a point frequently used by a user (referred to as “my spot”) can be input and registered from the operation / input unit 28. FIG. 2 is a diagram illustrating an example of a registered point display screen when a plurality of points registered in the point registration unit 25 are displayed and selected. The user displays the registered spot display screen of FIG. 2 on the display means 29, and selects a desired spot from the registered my spots. It can be set as a location, waypoint, or destination. In this way, the route search condition setting operation when receiving the normal navigation service is simplified.

  As shown in FIG. 2, the location registration means 25 includes a location (name) such as a home, work place, school where the school is attended, or a place where the user frequently visits, for example, a sports club or an English conversation school that is regularly attended. / Position (latitude / longitude)). In this embodiment, the route search server 40 is requested to search for an evacuation route from any two points, for example, from work to home, which are periodically registered in the point registration means 25 in normal times, and the result is stored in the evacuation route memory. Stored in the means 26 and stored. In this way, the desired evacuation route can be read from the evacuation route storage means 26 and displayed on the display means 29 without being communicated with the route search server 40 in the event of a disaster, and the evacuation route can be confirmed offline.

  The location registration means 25 may be provided in either the mobile terminal device 20 or the route search server 40. For example, in the case of the configuration of FIG. When the mobile terminal device 20 accesses the route search server 40 for the first time after the billing date, the route search server 40 acquires the My Spot of the mobile terminal device 20 and searches for a route between the My Spots. If the route search server 40 is provided with point registration means, the route search server 40 may perform a route search and distribute it to the mobile terminal.

  In such a regular route search, for example, if the route search server 40 is configured to perform an evacuation route search between the first to third points in the registration order of the points registered in the point registration means, If you register the order in which the user is usually located most frequently, home, work place, regularly attending sports clubs, etc. in that order, the route search server 40 automatically automatically connects each point between the two points, such as home. Upon receiving the evacuation route distribution, the latest evacuation route data can be stored in the evacuation route storage means 26.

  As described above, the number of registration points where the evacuation route search is normally performed is not limited to three, and may be four points. Also, instead of searching for an evacuation route to your home, you can select and register an evacuation site near your home among temporary evacuation sites or wide-area evacuation sites set by the government, You may comprise so that the evacuation route from each point to an evacuation place may be searched. Further, the spot information (position information) of the evacuation place set by the government is stored in the route search server 40 as a database, and the evacuation route to the nearest evacuation place close to the home is added to search for the mobile terminal device 20. It is also possible to provide a guide including the evacuation route to the evacuation site.

FIG. 3 is a conceptual diagram showing the relationship of the routes between the three registered points. The route search server 40 searches for an evacuation route between two points among the upper three points registered in the point registration means 25. There are six route directions (see arrows in FIG. 3) between the three points. Each route is searched with priority given to a recommended road (by a local government or the like).
For the method of giving priority to the recommended road, the network data may be configured such that the link cost in the link data is reduced by looking at the attribute of the recommended road, or the link cost other than the recommended road is increased. This can be done by searching for a route using the Dijkstra method or the like. In addition, a plurality of evacuation routes can be provided by performing a general route search in which a plurality of routes having different accumulated costs are searched as guide routes.

  Searching for multiple routes is important in the event of a disaster. For example, when returning from the Tokyo metropolitan area to the suburbs, bridges across large rivers are limited to some extent. Since the bridge may fall due to an earthquake and may not pass, it is also important to configure it to guide multiple evacuation routes across different bridges as a detour.

  If a route search is performed for each of two routes in six route directions, there are 12 routes. Therefore, the route is preferably distributed to the mobile terminal device 20 with as compact data as possible. As map data, vector map data is more suitable than raster map data, and the minimum required data is limited to route data. Of course, more detailed route data can be delivered if the specifications of the portable terminal device 20 are improved in the future and the storage capacity of the storage device constituting the evacuation route storage means 26 is increased.

  FIG. 4 is a diagram showing an example of an evacuation route between two points displayed on the display means 29, and an evacuation route A from the work place to the home is shown as an example. In FIG. 4, the departure place S is the office (02) registered in the point registration means 25, and the destination G is the home (01) registered in the point registration means 25 (see FIG. 2). This display screen includes a menu icon image 411 that is operated when returning to the menu screen, a displayed map and a zoom-in icon image 412 that is operated when the route is enlarged, and a zoom-out that is operated when the map and route are reduced. An icon image 413 is displayed.

  FIG. 5 is a diagram showing the transition of the menu screen when the evacuation route stored in the evacuation route storage means 26 is selected and displayed on the display means 29 offline. As described above, the evacuation route storage means 26 stores and stores the latest evacuation route data between points downloaded by periodically requesting the route search server 40 for route search. Each point is each point registered in the point registration means 25.

  The user of the mobile terminal device 20 uses the menu screen shown in FIG. 5 to specify a desired point and select the corresponding evacuation route data from the evacuation route data stored in the evacuation route storage means 26 to offline. It can be displayed on the display means 29. For example, when the user of the mobile terminal device 20 displays the evacuation route to the home (01), if “to home” is selected on the screen 1, the display screen changes to the screen 3, and from the office (02), Alternatively, selection items for each of the two routes (route 1 and route 2) from the third point 03 registered in the point registration means 25 (for example, a regularly attending sports club) to the home are displayed. When route 1 from the office is selected, the evacuation route A shown in FIG. 4 is selected and displayed on the display means 29.

  When the shelter (04) is designated on the screen 1, the display screen transitions to the screen 2. When a desired point is designated from the selection items such as “from home” and “from the office”, it is registered in the point registration means 25 in advance. The evacuation route to the evacuation site (the evacuation site set by the government and the evacuation site selected by the user of the mobile terminal, for example, the evacuation site near the home) is selected and displayed on the display means 29 offline. Is done.

  The display unit 29 displays the current position of the mobile terminal device 20 together with the evacuation route. For this reason, the mobile terminal device 20 is provided with GPS processing means 23. This GPS processing means 23 is of an autonomous type. Currently, the GPS processing means mounted on the general mobile terminal device 20 is mainly a server assist type that receives a GPS satellite signal, sends it to a server, and receives a position calculation result from the server. On the other hand, the autonomous type can calculate the current position by itself. Accordingly, the position can be calculated even when the communication infrastructure cannot be used at the time of a disaster, and the current position of the mobile terminal device 20 can be displayed on the evacuation route.

  In the event of a disaster, there is a high probability that the communication network is stopped. In such a case, the mobile terminal device 20 cannot download a new map from the route search server 40. However, since the relationship between the evacuation route and the current position is known, it is possible to proceed toward the home. In addition, since the main road recommended by local governments is preferentially selected as the route, it is easy to understand just by displaying the evacuation route without displaying a map. In addition, if the mobile terminal device 20 is equipped with an autonomous navigation means such as an electronic compass, the user can display the evacuation route heading up (display method that displays a map or route with the traveling direction on the display screen). It is also possible to provide a display that is easy to understand.

  Next, a normal navigation function in the evacuation route providing system shown in FIG. 1 will be briefly described. In the route search server 40, the main control unit 41 is a microprocessor having a RAM, a ROM, and a processor (not shown), and controls the operation of each unit by a control program stored in the ROM. The communication means 42 is an interface for communicating with the mobile terminal device 20 via the network 12. The route search means 44 searches the optimum route with reference to search network data such as road network data 47 and traffic network data 48 in accordance with the route search conditions transmitted from the mobile terminal device 20.

  The optimum route obtained as a result of the search is edited into guide route data to be distributed to the mobile terminal device 20 by the distribution data editing means 43 and transmitted to the mobile terminal device 20 via the communication means 42. Guidance data 45 is a database in which data such as voice patterns for guiding right and left turns at branch nodes such as intersections is accumulated. Guidance data corresponding to each branch node included in the guidance route is edited by the distribution data editing means 43. When combined with guide route data.

  The road network data 47 for searching for a route by a pedestrian or a car is configured as follows. For example, when the road is composed of roads A, B, and C as shown in FIG. 6, the end points, intersections, and bending points of the roads A, B, and C are used as nodes, and the roads connecting the nodes are directed links. Link cost data with node data (node latitude / longitude), link data (link number) and link cost of each link (link distance or time required to travel or walk the link) as data Composed.

  That is, in FIG. 6, ◯ and ◎ indicate nodes, and ◎ indicates a road intersection. Directional links connecting the nodes are indicated by arrow lines (solid line, dotted line, two-dot chain line). As for the links, there are links facing in the upward and downward directions of the road, but in FIG. 6, only the links in the direction of the arrows are shown for the sake of simplicity.

  When route search is performed using such road network data as a route search database, links linked from the starting node to the destination node are traced to accumulate the link cost, thereby minimizing the accumulated link cost. Search and guide the route. That is, in FIG. 6, when a route search is performed with the departure point as the node AX and the destination as the node CY, the road travels from the node AX to the road A, turns right at the second intersection, enters the road C, and reaches the node CY. The link cost is accumulated sequentially, and a route that minimizes the accumulated link cost is searched for and guided.

  Although other paths from the node AX to the node CY are not shown in FIG. 6, there are actually other such paths, so that the paths that can be reached from the node AX to the node CY are the same. And the route having the lowest link cost is determined as the optimum route. This method is performed by, for example, a known method called the Dijkstra method. Therefore, the searched guide route is expressed as the order of nodes and / or links that guide (guide) the user. The configuration of the traffic network data 48 is the same as that of the road network data 47, except that the portion corresponding to the road is the traffic route, the portion corresponding to the node is the station, and the link cost is the transportation means operated on the route. It becomes service time.

  In the mobile terminal device 20, the main control unit 21 includes a microprocessor (CPU) having a RAM and a ROM (not shown), and controls the operation of each unit by a control program stored in the ROM. The operation / input means 28 is for operation / input consisting of numeric keys, alphabet keys, other function keys, selection keys, scroll keys, and the like. From the menu screen displayed on the display means 29 as output means. Various input operations are performed by selecting a desired menu or operating keys. Accordingly, the display unit 29 also functions as a part of the operation / input unit 28. The communication means 22 is an interface for communicating with the route search server 40 via the network 12.

  The GPS processing means 23 receives a GPS satellite signal by a GPS receiver, and measures the current position (latitude / longitude) of the mobile terminal device 20. In addition, by providing a walking sensor, a geomagnetic sensor, etc., the current position of the mobile terminal device 20 can be determined by autonomous navigation, and when the GPS receiver cannot be determined from a GPS satellite signal, the current position is determined instead. can do.

  When a user wants to request a route search from the route search server 40, the operation / input means 28 is operated to display a service menu screen or a predetermined input screen on the display means 29, and the departure place, destination, movement The route search conditions such as means (walking or car), scheduled departure time and desired arrival time are input. When the current location is selected as the departure location, the current location measured by the GPS processing means 22 is used as the departure location.

  The route guidance request unit 24 edits the input route search condition into data to be transmitted to the route search server 40 and transmits the data to the route search server 40 via the communication unit 22. Distribution data such as a guidance route, a map, and guidance data distributed from the route search server 40 is temporarily stored in the temporary storage unit 27. These distribution data are read from the temporary storage means 27 as necessary and displayed on the display means 29. At the time of display, the current position measured by the GPS processing means 22 is superimposed on the map and displayed as a current position mark along with a guide route.

  When the user travels along the guidance route and approaches the node where the guidance point is set, guidance data added to the guidance route data is output from the voice output means 31 and guidance for turning left and right is performed.

  By the way, when the user of the mobile terminal device 20 evacuates by displaying the evacuation route between desired points on the display unit 29 offline as described above in the event of a disaster, the displayed evacuation route is necessarily accessible. Is not limited. For example, there may be cases where a bridge collapses or a building collapses on the road and cannot pass. In such a case, in a state where the communication infrastructure is disrupted, the user knows that the user cannot pass the traffic only after reaching the place where the user cannot pass.

  In such a case, it is convenient to be able to know in advance whether or not there is an inaccessible part on the evacuation route on which you are advancing. If such a situation can be grasped in advance, another candidate route can be selected. The evacuation route providing system and the portable terminal device according to the second embodiment of the present invention described below have such functions added.

  FIG. 7 is a block diagram illustrating a configuration of the evacuation route providing system and the mobile terminal device according to the second embodiment of the present invention. In FIG. 7, the mobile terminal device 20 has basically the same configuration as the mobile terminal device 20 of FIG. 1, but in the second embodiment, a mode selection means 33 for selecting a disaster evacuation mode, a wireless LAN, etc. Passing path recording means 32 is provided for exchanging data of passing paths with other mobile terminal devices 20 in the vicinity using communication means.

  In the present embodiment, when the disaster evacuation mode is selected by the mode selection unit 33 and communication with the route search server 40 is impossible, short-range wireless communication such as wireless LAN or Bluetooth (registered trademark). The wireless network 14 using the means exchanges the data of the passage route with another portable terminal device 20 that passes nearby, and there is a place where the other portable terminal device 20 cannot pass on the evacuation route on which it is advancing. It is configured so that it can be determined in advance.

  FIG. 8 is a flowchart illustrating a processing procedure for exchanging passage route data according to the second embodiment. FIG. 9 is a schematic diagram showing the concept of passage route data recorded in the passage route recording means. The mobile terminal device 20 periodically downloads the evacuation route from each point registered in the point registration unit 25 from the route search server 40 by the function described in the first embodiment, and the latest evacuation route data is stored in the evacuation route storage unit. 26. At the time of a disaster, the user sets the mobile terminal device 20 to the disaster evacuation mode, designates a desired evacuation route (from work to home, etc.) from the menu screen of FIG. Start evacuation route guidance.

  The process of exchanging passage route data with other mobile terminal devices 20 is enabled when the disaster evacuation mode is selected by the mode selection means 33 and communication with the route search server 40 is not possible. As a result, as will be described later, it is possible to obtain information on the passing link only from other portable terminal devices that are moving along the evacuation route at the time of a disaster, and it is possible to accurately determine the state of the passing route.

  In the flowchart of FIG. 8, when entering the disaster evacuation mode and starting route guidance in the process of step S11, the current position is acquired by the autonomous GPS processing means 23, and the route to the evacuation route in the process of step S12. Match. The route matching is a process for correcting the position measured in order to correct the positioning error included in the position data calculated by the GPS processing means 23 on the closest route, and is a matching process performed by a general navigation device. .

  If the route matching is too aggressive, you will not notice that you are walking on the wrong road, so if the positioning error exceeds a predetermined size, the current position calculated by the GPS processing means 23 will not be used for unreasonable matching. Display as it is. After route matching, the passage route is stored. As shown in FIG. 9, the evacuation route is stored in the coordinates of the latitude and longitude of the node at the end point of each link (each black circle in FIG. 9), but the link number is also stored at the same time. The link number that has passed (route matching has been completed) is recorded in the passage route recording means 32 in step S13 as having been passed.

  Next, in the process of step S14, the mobile terminal device 20 detects (searches) another mobile terminal device 20 existing in the disaster evacuation mode in the vicinity via the wireless communication network 14 such as a wireless LAN. When another portable terminal device 20 is detected in the process of step S15 (if YES), the passed link numbers recorded in the passage route recording means 32 are exchanged with each other in the process of step S16. In this case, since each mobile terminal device 20 is about the speed of passing by walking, there is sufficient time to exchange data with other mobile terminal devices 20 while passing each other within the communication range.

  In this case, since it is an emergency, preference data such as Chaku-Uta (registered trademark) may be deleted. The memory area is expanded so as to save as much data as possible and to store a large amount of data of the passing link number in the passing path recording means 32. In particular, since the passage route data received from another mobile terminal device 20 can be transmitted to another mobile terminal device 20, the mobile terminal device 20 other than the mobile terminal device 20 that has passed by the mobile terminal device 20 can actually transmit the data after the disaster. The link numbers of the roads that can pass through will propagate.

  Then, in the process of step S17, the display unit 29 displays the evacuation route in consideration of the information on the passing link recorded in the passing route recording unit 32. FIG. 10 is a diagram showing an example of the evacuation route displayed on the display means 29 in consideration of the information on the passage route. Since the passed link is received by the link number, it can be displayed only when the link number is in its own evacuation route. In this case, the route (link) that has passed up to the current position is indicated by a dotted line, the passage route received from another mobile terminal device 20 is indicated by a thick line or a different color (green), etc. Indicates that the evacuation route in the section ahead from the current location can pass.

  If the evacuation route is displayed in this way, the range of the route that can be passed can be determined in advance for the evacuation route that is considerably ahead of the current position, so that the user can continue walking on the displayed evacuation route with certainty. In addition, when the road remains unconfirmed, the user displays the second candidate evacuation route and observes the state of the passage confirmation. If the passage confirmation is confirmed, the user decides to change to the evacuation route. You will also be able to.

  If the other mobile terminal device 20 cannot be detected in the process of step S14 (if NO), the process proceeds to the process of step S17, and the evacuation route is displayed in consideration of the information of the passing link recorded in the passing route recording means 32. It is displayed on the means 29. In step S18, it is determined whether or not the destination (home or evacuation site) has been reached. If the destination has not been reached, the process returns to step S11 and the processes up to step S17 are repeated. If the destination is reached in the process of step S18, the process is terminated.

  Since the link number is used in the evacuation route providing system and the portable terminal device according to the second embodiment of the present invention, the base map is required to have a unified format. This system can be realized by using the same map format for disasters in as many mobile terminal devices 20 as possible and unifying the communication specifications. In addition, the mobile terminal device 20 can be used by mounting a GPS function on a mobile music player as well as a mobile phone. Since the portable music player can be expected to have a large storage capacity, it can sufficiently store map data and passing links.

  Further, since the evacuation route is searched in advance, if the route search server 40 performs statistical processing, the evacuation trend can be grasped. It can also be used to predict which roads the returnees from the Tokyo metropolitan area will concentrate on, and where and how much emergency food should be deployed.

  Although the mobile terminal device 20 requires a power source and battery life becomes a problem, a hand-charged charger for charging a mobile phone without a power source has begun to be provided as a disaster prevention goods, and a fuel for the mobile phone. Since batteries and the like have been developed, an environment in which a mobile phone can be used for a long time at the time of disaster is being prepared, and it can be an effective tool at the time of disaster.

It is a block diagram which shows the structure of the evacuation route provision system concerning Example 1 of this invention. FIG. 2 is a diagram illustrating an example of a registered spot display screen when a plurality of spots registered in the spot registering unit are displayed and selected. It is a conceptual diagram which shows the relationship of the path | route between three points registered into the point registration means. It is a figure which shows an example of the evacuation path | route between two points displayed on a display means. It is a figure which shows the transition of a menu screen in the case of selecting the evacuation route memorize | stored in the evacuation steep route memory | storage means, and displaying it on a display means offline. It is a schematic diagram which shows the structure of the road network data for a route search. It is a block diagram which shows the structure of the evacuation route provision system concerning Example 2 of this invention. It is a flowchart which shows the process sequence which exchanges the passage route data in Example 2 of this invention. It is a schematic diagram which shows the concept of the passage route data recorded on a passage route recording means. It is a figure which shows an example of the evacuation route displayed on a display means in consideration of the information of a passage route in Example 2 of this invention.

Explanation of symbols

10 .... Evacuation route providing system 20 ... Mobile terminal device 21 ... Main control unit 22 ... Communication means 23 ... GPS processing means 24 ... Route guidance request means 25 ··· Point registration means 26 ··· Evacuation route storage means 27 ··· Temporary storage means 28 ··· Operation and input means 29 ··· Display means 31 ··· Audio output means 32 · · · ... Passing route recording means 33 ... Mode selection means 40 ... Route search server 41 ... Main control unit 42 ... Communication means 43 ... Distribution data editing means 44 ...・ ・ Route search means 45 ・ ・ ・ ・ Guidance data 46 ・ ・ ・ ・ Map data 47 ・ ・ ・ ・ Road network data 48 ・ ・ ・ ・ Traffic network data 49 ・ ・ ・ ・ Evacuation route data

Claims (17)

A portable terminal device having point registration means for pre-registering an evacuation route search desired point for which evacuation route search is desired, and route guidance request means for requesting the route search from the route search server by designating from the desired point to the desired point And a route search server provided with evacuation route data for searching for an evacuation route,
The portable terminal device includes an evacuation route storage unit that stores an evacuation route distributed from a route search server, and a display unit that displays the evacuation route.
The route guidance requesting unit requests the route search server to search for an evacuation route between evacuation route search desired points periodically registered in the point registration unit at normal times, and the evacuation route received from the route search server An evacuation route providing system that stores the evacuation route in the evacuation route storage means and displays the evacuation route stored in the evacuation route storage means in the event of a disaster on the display means. The portable terminal device further includes GPS processing means for calculating the current position, mode selection means for designating the disaster evacuation mode, and passage route recording means for recording a link of the evacuation route that has passed.
Based on the current position calculated by the GPS processing means, the link of the evacuation route that has passed is determined and recorded in the passage route recording means,
Passages that are in a range where the mobile terminal device can communicate with the mobile terminal device using the wireless communication network and that are operating in the disaster evacuation mode are captured and recorded in the passage route recording means of each other 2. The evacuation route providing system according to claim 1, wherein link information is exchanged, and information of the exchanged passing link is added to display the evacuation route on the display means. Evacuation routes receiving during normal includes the evacuation route searching desired locations registered in the location registration means, out of the registered refuge database with the route search server, close the evacuation of the evacuation route search desired point The evacuation route providing system according to claim 1, further comprising an evacuation route between places. Guidance route the route search server transmits the route providing system evacuation according to claim 1 or 2, characterized in that the route recommended for the evacuation of the disaster is searched preferentially. The evacuation route providing system according to claim 1 or 2, wherein the evacuation routes between the respective evacuation route search desired points are a plurality of candidate routes. A point registration means for registering a desired evacuation route search desired point for which evacuation route search is desired, a route guidance request means for requesting a route search from the desired point to the route search server, and a route search server and evacuation route storing means for storing the escape route distributed from, display means for displaying the evacuation routes, and the route guidance request means, evacuation route searching registered periodically to the spot registration means during normal The route search server is requested to search for an evacuation route between desired points, the evacuation route received from the route search server is stored in the evacuation route storage means, and the evacuation route stored in the evacuation route storage means at the time of a disaster is A route search server connected via a network to a mobile terminal device displayed on a display means,
The route search server includes evacuation route data for searching for an evacuation route, and when a search request for an evacuation route is received from the mobile terminal device in a normal state, the route search server is registered in the point registration unit based on the evacuation route data. A route search server that searches for an evacuation route between desired evacuation route searches and distributes it to a portable terminal device. A point registration means for registering a desired evacuation route search desired point for which evacuation route search is desired, a route guidance request means for requesting a route search from the desired point to the route search server, and a route search server The evacuation route storage means for storing the evacuation route delivered from, the display means for displaying the evacuation route, the GPS processing means for calculating the current position, the mode selection means for designating the evacuation mode at the time of the disaster, and passed comprising a passing path recording means for recording the link escape routes, and the route guidance requesting means, the searching of periodically the spot registration means registered evacuation route search desired point between escape routes during normal path The evacuation route requested to the search server and received from the route search server is stored in the evacuation route storage means, and the evacuation route that has passed based on the current position calculated by the GPS processing means is stored. Another link of the route is determined and recorded in the passage route recording means, and is in a range where the wireless communication network can be used to communicate with the own portable terminal device, and is operated by specifying the disaster evacuation mode. The display unit captures the terminal device, exchanges the information of the passing links recorded in the passing route recording means of each other, adds the information of the exchanged passing links, and stores the evacuation route stored in the evacuation route storage means at the time of the disaster A route search server connected to the mobile terminal device displayed on the network via a network,
The route search server includes evacuation route data for searching for an evacuation route, and when a search request for an evacuation route is received from the mobile terminal device in a normal state, the route search server is registered in the point registration unit based on the evacuation route data. A route search server that searches for an evacuation route between desired evacuation route searches and distributes it to a portable terminal device. The route search server according to claim 6 or 7, wherein the route search server comprises point registration means for registering an evacuation route search desired point where the portable terminal device desires an evacuation route search . The evacuation routes to the receiving mobile terminal device during normal includes the evacuation route searching desired locations registered in the location registration means, out of the shelter, which is registered in the database provided in the route search server, the evacuation route search 8. The route search server according to claim 6, further comprising an evacuation route to and from an evacuation site near the desired point. Route search server according to claim 6 or claim 7 wherein the route search server guide route to be transmitted is characterized in that path recommended for the evacuation of the disaster is searched preferentially. The route search server according to claim 6 or 7, wherein the evacuation routes between the respective evacuation route search desired points are a plurality of candidate routes. A mobile terminal device connected via a network to a route search server having evacuation route data for searching for an evacuation route,
The mobile terminal device includes a point registration unit that pre-registers an evacuation route search desired point for which an evacuation route search is desired, and a route guidance request that requests a route search from the desired point to the desired point and requests a route search to the route search server. Means, evacuation route storage means for storing the evacuation route delivered from the route search server, and display means for displaying the evacuation route,
The route guidance requesting unit requests the route search server to search for an evacuation route between evacuation route search desired points periodically registered in the point registration unit at normal times, and the evacuation route received from the route search server A portable terminal device that stores in an evacuation route storage means and displays the evacuation route stored in the evacuation route storage means at the time of a disaster on the display means. The portable terminal device further includes GPS processing means for calculating the current position, mode selection means for designating the disaster evacuation mode, and passage route recording means for recording a link of the evacuation route that has passed.
Based on the current position calculated by the GPS processing means, the link of the evacuation route that has passed is determined and recorded in the passage route recording means,
Passages that are in a range where the mobile terminal device can communicate with the mobile terminal device using the wireless communication network and that are operating in the disaster evacuation mode are captured and recorded in the passage route recording means of each other 13. The mobile terminal device according to claim 12, wherein link information is exchanged, and information on the exchanged passing link is added to display an evacuation route on the display means. The evacuation route received in normal time is between the evacuation route search desired point registered in the point registration means and the evacuation site near the point among the evacuation sites registered in the database provided in the route search server. The mobile terminal device according to claim 12 or 13, characterized in that the mobile terminal device includes an evacuation route. Guidance route the route search server transmits the mobile terminal device according to claim 12 or claim 13, characterized in that the route recommended for the evacuation of the disaster is searched preferentially. The portable terminal device according to claim 12 or 13, wherein the evacuation routes between the respective evacuation route search desired points are a plurality of candidate routes.   14. The portable terminal device according to claim 13, wherein the disaster evacuation mode set by the mode selection unit is validated when the route search server cannot be connected.

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