JP2021121941A - Disaster information system - Google Patents

Abstract

To suppress a running cost of a system.SOLUTION: A disaster information system includes: a plurality of nodes connected to measurement sections for measuring measurement values related to an event to be a disaster occurrence factor; a plurality of gateways; a management server; portable terminals held by users riding on a vehicle; and car navigation systems mounted on the vehicles. Each of the nodes transmits measurement information indicating measurement values to the management server via the gateway. The management server determines whether a disaster has occurred based on the measurement information for each one of positions of the plurality of nodes. When a response request from the portable terminal is received, the management server transmits disaster information expressing presence/absence of disaster occurrence at each position of the plurality of nodes to the portable terminal. When disaster information is received from the portable terminal, the car navigation system searches for a route which does not pass the position of disaster occurrence based on disaster information, so as to guide the searched route to the user.SELECTED DRAWING: Figure 1

Description

The present invention relates to a disaster information system.

As an example of a disaster information system, a water level gauge and a rain gauge, a server that collects the water level measured by the water level gauge and the rainfall measured by the rain gauge, and a mobile terminal that provides information on the water level and rainfall by the server. There is a river / sabo information system provided with (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2014-203126

However, in the river / sabo information system described above, the mobile terminal and the server are connected by the Internet, which consumes a relatively large amount of communication power when performing communication. Therefore, in the river / sabo information system described above, the running cost may be high.

The present invention has been made in view of the above, and an object of the present invention is to provide a disaster information system capable of suppressing running costs.

In order to solve the above-mentioned problems and achieve the object, the disaster information system according to one aspect of the present invention includes a plurality of nodes connected to a measurement unit that measures measured values related to an event that causes a disaster. A plurality of gateways to which each of the plurality of nodes is directly or indirectly connected to one of them, a management server to which at least one of the plurality of gateways is connected, and a user in a vehicle. The server includes a mobile terminal held by the server and a car navigation system mounted on the vehicle and communicating with the mobile terminal, and the node communicates with a gateway connected to the node and another node. The gateway includes a second communication unit that communicates with a node connected to the gateway and a third communication unit that communicates with another gateway, and the management server includes the management server. A fourth communication unit that communicates with the gateway connected to the management server and also communicates with the mobile terminal is provided, and the first communication unit of the node indicates a measured value measured by the measurement unit. The measurement information is transmitted to the management server via the gateway. The management server includes a control unit that determines whether or not a disaster has occurred at the positions of the plurality of nodes based on the measurement information, and the fourth communication unit of the management server is the mobile terminal. Upon receiving the response request from, the car navigation system transmits the disaster information indicating whether or not the disaster has occurred at the positions of the plurality of nodes to the mobile terminal, and the car navigation system receives the disaster information from the mobile terminal. Based on the disaster information, a route that does not pass through the position where the disaster occurred is searched, and the searched route is guided to the user.

According to one aspect of the present invention, running costs can be suppressed.

FIG. 1 is a diagram showing an example of the configuration of the disaster information system according to the first embodiment. FIG. 2 is a diagram for explaining an example of the communication network according to the first embodiment. FIG. 3 is a diagram showing an example of the configuration of the node according to the first embodiment. FIG. 4 is a diagram showing an example of a gateway configuration according to the first embodiment. FIG. 5 is a diagram showing an example of the configuration of the management server according to the first embodiment. FIG. 6 is a diagram showing an example of the data structure of the correspondence table according to the first embodiment. FIG. 7 is a sequence diagram showing a procedure of an example of the operation of the disaster information system according to the first embodiment. FIG. 8 is a flowchart showing the flow of the notification control process according to the first embodiment. FIG. 9 is a diagram showing an example of the configuration of the disaster information system according to the second embodiment. FIG. 10 is a sequence diagram showing a procedure of an example of the operation of the disaster information system according to the second embodiment. FIG. 11 is a flowchart showing the flow of the disaster location information transmission process according to the second embodiment. FIG. 12 is a sequence diagram showing a procedure of another example of the operation of the disaster information system according to the second embodiment. FIG. 13 is a flowchart showing the flow of the rescue information transmission process according to the second embodiment.

Hereinafter, the disaster information system according to each embodiment will be described with reference to the drawings.

(First Embodiment)
FIG. 1 is a diagram showing an example of the configuration of the disaster information system 1 according to the first embodiment. The disaster information system 1 is a system that notifies the user of information related to a disaster such as flooding of a road.

As shown in FIG. 1, the disaster information system 1 according to the first embodiment includes a plurality of water level gauges 10, a plurality of rain gauges 11, a plurality of nodes 12, a plurality of lighting devices 13, a management server 14, and a plurality of mobile phones. The terminal 15 is provided. The water level gauge 10, the rain gauge 11, and the node 12 are provided on the street light 16 erected on the road. In the example of FIG. 1, the number of nodes 12 is 3, the number of water level gauges 10, the number of rain gauges 11 and the number of lighting devices 13 are 3, each, the number of management servers 14 is 1, and mobile phones. The case where the number of terminals 15 is two is illustrated, but the number and the number of each device are not limited to this.

The water level gauge 10 measures the water level at a predetermined position on the road of the street light 16 provided with the water level gauge. The water level gauge 10 transmits information (water level information) indicating the measured water level to the node 12. For example, when the embankment of a river near a road breaks, water flows from the river into the road, water accumulates in the road, and the water level of the road rises. When the water level exceeds a predetermined value, various disasters such as flooding of roads and sediment-related disasters may occur. Therefore, the water level is a measured value related to the event that water accumulates on the road, which causes the occurrence of such a disaster. The water level gauge 10 is an example of a measuring unit that measures such a measured value. The water level information is an example of measurement information.

The rain gauge 11 measures the amount of rainfall at a predetermined position where the rain gauge 11 is provided. The rain gauge 11 transmits information (rainfall information) indicating the measured rainfall to the node 12. For example, when the amount of rainfall exceeds a predetermined amount of caution, various disasters such as flooding of roads and sediment-related disasters may occur. Therefore, the amount of rainfall is a measured value related to the event of rainfall that causes the occurrence of such a disaster. The rain gauge 11 is an example of a measuring unit that measures such a measured value. The rainfall information is an example of measurement information.

The node 12 is connected to the management server 14 via the communication network 17 and the Internet line 18, and can communicate with each other. The node 12 is connected to the water level gauge 10 and the rain gauge 11. The node 12 transmits water level information and rainfall information to and from the management server 14, and receives an instruction to notify the disaster information. For example, the node 12 transmits the water level information and the rainfall information to the management server 14 at predetermined time intervals (for example, every 5 minutes). Various processes executed by the node 12 will be described later.

The lighting device 13 is an LED (Light Emitting Diode) included in the street light 16, and illuminates a predetermined area on the road around the position where the street light 16 is erected. Under the control of the node 12, the lighting device 13 blinks or emits light of a specific color (light of a specific wavelength) to notify the occurrence of a disaster. The lighting device 13 is an example of a notification device. The notification device may be, for example, an alarm device that emits a sound.

The management server 14 collects the water level information transmitted by the water level gauge 10 and the rainfall information transmitted by the rain gauge 11, and carries the collected water level information and rainfall information, and disaster information according to the water level information and rainfall information. Provided to the terminal 15. For example, when the management server 14 receives the response request from the mobile terminal 15, it transmits water level information, rainfall information, and the like to the mobile terminal 15. In addition, the management server 14 transmits an instruction to notify the collected water level information and disaster information according to the rainfall information to the node 12. The process executed by the management server 14 will be described later.

The mobile terminal 15 is for the user to confirm the water level information, the rainfall information, and the disaster information. For example, the mobile terminal 15 and the management server 14 are connected by an internet line 18 and can communicate with each other. The mobile terminal 15 transmits a response request for responding to water level information and rainfall information and a response request for responding with disaster information to the management server 14 by the operation of the user. As a result, the mobile terminal 15 receives and displays the water level information, the rainfall information, and the disaster information responded (transmitted) from the management server 14, so that the user can confirm the water level information, the rainfall information, and the disaster information. Can be made to. The mobile terminal 15 is realized by a smartphone, a tablet terminal, or the like. The management server 14 is provided with a display device (not shown), and the display device may display water level information, rainfall information, and disaster information so that the user can confirm the information.

Next, the communication network 17 will be described with reference to FIG. FIG. 2 is a diagram for explaining an example of the communication network 17 according to the first embodiment.

As shown in FIG. 2, in the communication network 17, a plurality of nodes 12 (three in the example of FIG. 2) are connected to each of a plurality of (four in the example of FIG. 2) gateways 19. The number of gateways 19 is not limited to four. Further, the number of nodes 12 connected to one gateway 19 is not limited to three, and may be, for example, 100.

A mesh network 20 is formed by one gateway 19 and a plurality of nodes 12 connected to the one gateway 19. In the example of FIG. 2, the node 12 is directly connected to the gateway 19, but some of the plurality of nodes 12 are indirectly connected to the gateway 19 via the other nodes 12. You may be. That is, the node 12 is directly or indirectly connected to any of the plurality of gateways 19.

In one mesh network 20, one node 12 communicates with another node 12 and a gateway 19 by a wireless PAN (Personal Area Network). A wireless PAN is a network that consumes less power at the cost of having a shorter transmittable distance than a wireless LAN. In the first embodiment, one node 12 communicates with another node 12 and a gateway 19 in accordance with 6LoWPAN (IPv6 over Low power Wireless Personal Area Network), which is a standard for wireless communication with low power consumption. For example, one node 12 communicates with another node 12 and a gateway 19 by a sub gigahertz band radio (Sub-GHz band radio).

Further, the gateway 19 is connected to another gateway 19 by a wireless LAN and can communicate with the other gateway 19. Further, in the example of FIG. 2, one of the plurality of gateways 19 is connected to the Internet line 18, but at least one gateway 19 may be connected to the Internet line 18. In the following description, the gateway 19 connected to the Internet line 18 may be referred to as a "connection gateway 190". The management server 14 and the mobile terminal 15 are also connected to the Internet line 18. Therefore, the node 12 can communicate with the management server 14 via the gateway 19 including the connection gateway 190.

In the disaster information system 1 according to the first embodiment, the node 12 and the management server 14 are connected by a communication network 17 including a wireless PAN which is a low power consumption network. That is, the disaster information system 1 is a system with low power consumption as a whole. Therefore, according to the disaster information system 1, it is possible to suppress an increase in power consumption. As a result, according to the disaster information system 1, the running cost can be suppressed.

Next, an example of the configuration of the node 12 according to the first embodiment will be described with reference to FIG. FIG. 3 is a diagram showing an example of the configuration of the node 12 according to the first embodiment. As shown in FIG. 3, the node 12 includes a storage unit 12a, a communication unit 12b, and a control unit 12c.

The storage unit 12a is realized by a storage device such as a memory, for example. Various programs executed by the control unit 12c are stored in the storage unit 12a. Further, the storage unit 12a temporarily stores various data used when various programs are executed by the control unit 12c.

The communication unit 12b is realized by, for example, a network interface card that performs wireless communication according to 6LoWPAN. When the communication unit 12b is directly connected to the gateway 19, the communication unit 12b performs wireless communication with the gateway 19. Further, when the communication unit 12b is indirectly connected to the gateway 19, the communication unit 12b performs wireless communication with the node 12 that relays to the gateway 19. The communication unit 12b is an example of the first communication unit.

The control unit 12c is realized by a processor such as a CPU (Central Processing Unit). The control unit 12c controls the entire node 12. The control unit 12c reads various programs stored in the storage unit 12a and executes the read programs to execute various processes. The control unit 12c is connected to the water level gauge 10, the rain gauge 11, and the lighting device 13.

Next, an example of the configuration of the gateway 19 will be described with reference to FIG. FIG. 4 is a diagram showing an example of the configuration of the gateway 19 according to the first embodiment. As shown in FIG. 4, the gateway 19 has a storage unit 19a, communication units 19b and 19c, and a control unit 19d.

The storage unit 19a is realized by, for example, a storage device such as a memory. Various programs executed by the control unit 19d are stored in the storage unit 19a. Further, the storage unit 19a temporarily stores various data used when various programs are executed by the control unit 19d.

The communication unit 19b is realized by, for example, a network interface card that performs wireless communication according to 6LoWPAN. The communication unit 19b performs wireless communication with the node 12. The communication unit 19b is an example of the second communication unit.

The communication unit 19c is realized by, for example, a network interface card that performs wireless communication according to the standard of Wifi (registered trademark). The communication unit 19c performs wireless communication with another gateway 19 by wireless LAN. The communication unit 19c is an example of a third communication unit.

The control unit 19d is realized by a processor such as a CPU. The control unit 19d controls the entire gateway 19. The control unit 19d reads various programs stored in the storage unit 19a and executes the read programs to execute various processes.

Of the plurality of gateways 19, the connection gateway 190 is a communication unit (Internet communication unit:) realized by a network interface card that communicates with the management server 14 via the Internet line 18 in addition to the above-described configuration. (Not shown).

Next, an example of the configuration of the management server 14 will be described with reference to FIG. FIG. 5 is a diagram showing an example of the configuration of the management server 14 according to the first embodiment. As shown in FIG. 5, the management server 14 has a storage unit 14a, a communication unit 14b, and a control unit 14c.

The storage unit 14a is realized by, for example, a storage device such as a memory. Various programs executed by the control unit 14c are stored in the storage unit 14a. Further, the storage unit 14a temporarily stores various data used when various programs are executed by the control unit 14c.

Further, the map data 14a_1 and the correspondence table 14a_2 are stored in the storage unit 14a according to the first embodiment. In the map data 14a_1, the position of the street light 16 and the identifier of the street light 16 are registered in association with each of the plurality of street lights 16. The position of the street light 16 is represented by, for example, a combination of longitude and latitude. The correspondence table 14a_2 will be described later.

The communication unit 14b communicates with the node 12 via the communication network 17 by connecting to the connection gateway 190. For example, the communication unit 14b is realized by a network interface card that communicates with the connection gateway 190 via the Internet line 18. The communication unit 14b is an example of a fourth communication unit.

The control unit 14c is realized by a processor such as a CPU. The control unit 14c controls the entire management server 14. The control unit 14c reads various programs stored in the storage unit 14a and executes the read programs to execute various processes.

Next, the correspondence table 14a_2 will be described. In the correspondence table 14a_2, the identifier of the street light 16 and the identifier of the node 12 are registered in association with each other. FIG. 6 is a diagram showing an example of the data structure of the correspondence table 14a_2 according to the first embodiment. As shown in FIG. 6, the record of the correspondence table 14a_2 has each item of "street light" and "node".

The identifier of the street light 16 is registered in the item of "street light". For example, the identifier "A" of the street light 16 is registered in the item of "street light" in the first record of the correspondence table 14a_2 shown in FIG.

In the item of "node", the identifier of the node 12 provided in the street light 16 indicated by the identifier registered in the item of "street light" is registered. In the item of "node" of the first record of the correspondence table 14a_2 shown in FIG. 6, the identifier "AA" of the node 12 provided in the street light 16 indicated by the identifier "A" is registered.

Next, a procedure of an example of the operation of the disaster information system 1 will be described. FIG. 7 is a sequence diagram showing a procedure of an example of the operation of the disaster information system 1 according to the first embodiment.

As shown in FIG. 7, the communication unit 12b (see FIG. 3) of the node 12 transmits measurement information (water level information or rainfall information) to the gateway 19 by wireless PAN (step S101).

When the communication unit 19b (see FIG. 4) of the gateway 19 receives the measurement information, the communication unit 19c (see FIG. 4) of the gateway 19 transmits the received measurement information to the connection gateway 190 by wireless LAN (step S102). ..

When the communication unit 19c of the connection gateway 190 receives the measurement information, the above-mentioned Internet communication unit of the connection gateway 190 transmits the received measurement information to the management server 14 via the Internet line 18 (step S103).

When the communication unit 14b (see FIG. 5) of the management server 14 receives the measurement information, the control unit 14c (see FIG. 5) of the management server 14 executes the notification control process (step S104).

Here, the notification control process will be described. FIG. 8 is a flowchart showing the flow of the notification control process according to the first embodiment. As shown in FIG. 8, the control unit 14c (see FIG. 5) of the management server 14 refers to the correspondence table 14a_2 (see FIG. 6) and corresponds to the identifier of the node 12 attached to the measurement information. Acquire the identifier of the road light 16 (step S201).

Then, the control unit 14c determines whether or not a disaster has occurred based on the measurement information (step S202). An example of the specific processing of step S202 will be described.

First, a case where the measurement information is water level information will be described. When the water level indicated by the water level information is equal to or higher than a predetermined water level, the control unit 14c determines that a disaster such as flooding of a road or a sediment disaster has occurred. On the other hand, when the water level indicated by the water level information is lower than the predetermined water level, the control unit 14c determines that no disaster has occurred.

Next, a case where the measurement information is rainfall information will be described. When the rainfall indicated by the rainfall information is equal to or greater than the predetermined warning rainfall, the control unit 14c determines that a disaster such as road flooding or sediment disaster has occurred. On the other hand, when the rainfall indicated by the rainfall information is less than the predetermined warning rainfall, the control unit 14c determines that no disaster has occurred.

When it is determined that no disaster has occurred (step S202: No), the control unit 14c determines the measurement information, the identifier of the node 12 attached to the measurement information, and the street light 16 acquired in step S201. The identifier, the information indicating that no disaster has occurred (disaster-free information), and the position of the street light 16 are associated with each other and stored in the storage unit 14a (see FIG. 5) of the management server 14 (step S203). .. The measurement information, the identifier of the node 12, the identifier of the street light 16, the disaster-free information, and the position of the street light 16 stored in the storage unit 14a in step S203 are provided to the mobile terminal 15 in response to a request from the mobile terminal 15. NS. Then, the control unit 14c ends the notification control process.

In step S203, the position of the street light 16 associated with the measurement information, the identifier of the node 12, the identifier of the street light 16, and the disaster-free information is acquired by the control unit 14c as follows. For example, the control unit 14c refers to the map data 14a_1 and acquires the position of the street light 16 corresponding to the identifier of the street light 16 acquired in step S201.

On the other hand, when it is determined that a disaster has occurred (step S202: Yes), the control unit 14c determines the measurement information, the identifier of the node 12 attached to the measurement information, and the street light acquired in step S201. The identifier of 16 and the information indicating that a disaster has occurred (disaster information) are associated with the position of the street light 16 and stored in the storage unit 14a of the management server 14 (step S204). The measurement information, the identifier of the node 12, the identifier of the street light 16, the disaster information, and the position of the street light 16 stored in the storage unit 14a in step S204 are provided to the mobile terminal 15 in response to a request from the mobile terminal 15. NS.

In step S204, the position of the street light 16 associated with the measurement information, the identifier of the node 12, the identifier of the street light 16, and the disaster information is acquired by the control unit 14c in the same manner as in step S203 described above.

Then, the control unit 14c refers to the map data 14a_1 and is within a predetermined range (for example, within a wide range over several kilometers or a road along the river) from the position of the street light 16 indicated by the identifier acquired in step S201. And the identifier of another street light 16 located in a limited narrow range over several hundred meters such as an underpass (step S205). Here, the position of the street light 16 and the position of the node 12 provided on the street light 16 are substantially equal to each other. Therefore, in step S205, the control unit 14c acquires the identifier of the street light 16 provided with the other node 12 located within the predetermined range from the position of the node 12 indicated by the identifier attached to the measurement information. It can be said that it is.

Then, the control unit 14c acquires the identifier of the other node 12 corresponding to the identifier of the other street light 16 acquired in step S205 with reference to the correspondence table 14a_2 (step S206). That is, in step S206, the control unit 14c acquires the identifier of another node 12 located within the predetermined range from the position of the node 12 indicated by the identifier attached to the measurement information.

Then, the control unit 14c notifies the node 12 indicated by the identifier attached to the measurement information and the other node 12 indicated by the identifier acquired in step S206 of information indicating that a disaster has occurred. The communication unit 14b (see FIG. 5) of the management server 14 is controlled (step S207) so as to transmit the control instruction (notification control instruction), and the notification control process is terminated. That is, in step S207, the control unit 14c transmits a broadcast control instruction to the node 12 indicated by the identifier attached to the measurement information and another node 12 located within a predetermined range from this node 12. As a result, the communication unit 14b is controlled.

When the control unit 14c determines that a disaster has occurred in step S202, in step S207, as shown in FIG. 7, the communication unit 14b (see FIG. 5) of the management server 14 issues a notification control instruction to the Internet. It is transmitted to the connection gateway 190 via the line 18 (step S105).

Then, when the above-mentioned Internet communication unit of the connection gateway 190 receives the notification control instruction, the communication unit 19c (see FIG. 4) of the connection gateway 190 transmits the received notification control instruction to the gateway 19 by wireless LAN (step). S106). In step S106, the gateway 19 to which the notification control instruction is transmitted is the gateway 19 to which the node 12 indicated by the identifier attached to the measurement information is directly or indirectly connected, and the identifier acquired in step S206. Is a gateway 19 to which the other node 12 indicated by is directly or indirectly connected. In the example of FIG. 7, the gateway 19 to which the node 12 indicated by the identifier attached to the measurement information is directly or indirectly connected and the other node 12 indicated by the identifier acquired in step S206 are directly or indirectly connected. Although the case where the gateway 19 connected to is the same is illustrated, it may be different.

Then, when the communication unit 19c of the gateway 19 receives the notification control instruction, the communication unit 19b (see FIG. 4) of the gateway 19 indicates the received notification control instruction by the identifier attached to the measurement information by the wireless PAN. It is transmitted to the node 12 (step S107). Further, the communication unit 19b of the gateway 19 transmits the received broadcast control instruction to another node 12 indicated by the identifier acquired in step S206 by wireless PAN (step S108).

Then, when the communication unit 12b (see FIG. 3) of the node 12 receives the notification control instruction, the control unit 12c (see FIG. 3) of the node 12 determines that a disaster has occurred based on the notification control instruction. The lighting device 13 of the street light 16 is controlled so as to notify the indicated information (step S109). For example, the control unit 12c blinks the lighting device 13 or emits light of a specific color (light of a specific wavelength) from the lighting device 13 so that information indicating that a disaster has occurred is notified. You may let it. In this way, when the communication unit 12b receives the notification control instruction, the control unit 12c causes the lighting device 13 to notify the user of the disaster information based on the received notification control instruction. The other nodes 12 also perform the same notification control (step S110).

In the operation shown in FIG. 7, when the communication unit 14b of the management server 14 receives the measurement information, it is an instruction to notify the disaster information according to the received measurement information via the gateway 19 including the connection gateway 190. The control instruction is transmitted to the node 12.

According to the operation shown in FIG. 7, for example, when the lighting device 13 of the street light 16 blinks or emits light of a specific color, a disaster occurs for a passerby on the road. It is possible to notify that it is. As a result, passers-by can be promptly evacuated from the place where the disaster has occurred to another place. In addition, when a passerby confirms that the lighting device 13 is blinking or emits light of a specific color from a position away from the street light 16, a disaster occurs for the passerby. It is possible to prevent people from entering the place where the problem is occurring.

The disaster information system 1 according to the first embodiment has been described above. According to the disaster information system 1, the running cost can be suppressed as described above.

Further, in the disaster information system 1, at least one gateway 19 needs to be connected to the Internet line 18, so that the line paid to the Internet connection provider is compared with the case where all the nodes 12 are connected to the Internet line 18. The usage fee can be suppressed.

Here, a management server that manages a plurality of street lights, a plurality of nodes provided in the plurality of street lights, and a gateway that transmits information such as power consumption of the street lights transmitted from the nodes to the management server are provided. There is a street light system. A part of the street light system, which is another system different from the disaster information system 1, and a part of the disaster information system 1 may be shared. For example, the management server of the existing street light system may have the function of the management server 14 of the disaster information system 1. Further, the gateway of the existing street light system may have the function of the gateway 19 of the disaster information system 1. Further, the node of the existing street light system may be provided with the function of the node 12 of the disaster information system 1. That is, at least one of the node 12, the gateway 19, and the management server 14 may be shared by the disaster information system 1 and the street light system. By giving the nodes, gateways, and management servers of the existing street light system the functions of the nodes 12, gateways 19, and management servers 14 of the disaster information system 1, when the disaster information system 1 is constructed, the nodes 12 are newly constructed. Since it is not necessary to provide the gateway 19, the management server 14, and the management server 14, the construction cost can be suppressed.

(Second Embodiment)
Next, the disaster information system 2 according to the second embodiment will be described with reference to FIG. In the second embodiment, the same reference numerals may be given to the same configurations as those of the disaster information system 1 according to the first embodiment, and the description thereof may be omitted. FIG. 9 is a diagram showing an example of the configuration of the disaster information system 2 according to the second embodiment.

The disaster information system 2 according to the second embodiment is different from the disaster information system 1 according to the first embodiment in that it further includes a plurality of car navigation systems 22 mounted on a plurality of vehicles 21. Further, in the second embodiment, for example, a user holding the mobile terminal 15 is in the vehicle 21. Further, the mobile terminal 15 and the car navigation system 22 can communicate with each other by Bluetooth (registered trademark) or the like.

The car navigation system 22 uses the road traffic information acquired from the road traffic system (not shown) to route to the destination when the driver operates the input device and the input device receives the input of the destination. The information indicating the route obtained as a result of the search and the current position of the vehicle 21 are displayed on a display device (not shown) to support the driver's driving. The car navigation system 22 receives a signal (GPS signal) from a GPS (Global Positioning System) satellite, and calculates the position of the car navigation system 22 from the received GPS signal. Then, the car navigation system 22 transmits the calculated position information (position information) to the mobile terminal 15. Here, since the car navigation system 22 is mounted on the vehicle 21, the information indicating the position of the car navigation system 22 is also the information indicating the position of the vehicle 21. Therefore, the position information indicates the position of the vehicle 21. The position of the vehicle 21 is represented by a combination of longitude and latitude.

Next, a procedure of an example of the operation of the disaster information system 2 will be described. FIG. 10 is a sequence diagram showing a procedure of an example of the operation of the disaster information system 2 according to the second embodiment.

The processing of steps S101 to S103 according to the second embodiment shown in FIG. 10 is the same as the processing of steps S101 to S103 according to the first embodiment shown in FIG. 7, and thus the description thereof will be omitted.

When the communication unit 14b (see FIG. 5) of the management server 14 receives the measurement information, the control unit 14c (see FIG. 5) of the management server 14 executes the disaster location information transmission process (step S301).

Here, the disaster location information transmission process will be described. FIG. 11 is a flowchart showing the flow of the disaster location information transmission process according to the second embodiment. As shown in FIG. 11, the control unit 14c (see FIG. 5) of the management server 14 determines whether or not a disaster has occurred based on the measurement information, as in the process of step S202 described above (step). S401).

When it is determined that no disaster has occurred (step S401: No), the control unit 14c ends the disaster location information transmission process. On the other hand, when it is determined that a disaster has occurred (step S401: Yes), the control unit 14c refers to the correspondence table 14a_2 (see FIG. 6) and refers to the node 12 attached to the measurement information. Acquire the identifier of the street light 16 corresponding to the identifier (step S402).

Then, the control unit 14c identifies the position of the street light 16 indicated by the identifier acquired in step S402 as a disaster location with reference to the map data 14a_1, and provides car navigation information (disaster location information) indicating the specified location. The communication unit 14b (see FIG. 5) of the management server 14 is controlled so as to transmit the data to the system 22 (step S403). Then, the control unit 14c ends the disaster location information transmission process.

When the control unit 14c determines that a disaster has occurred in step S401, in step S403, as shown in FIG. 10, the communication unit 14b (see FIG. 5) of the management server 14 transmits the disaster location information to the Internet. It is transmitted to the mobile terminal 15 via the line 18 (step S302).

When the mobile terminal 15 receives the disaster location information, it transmits the received disaster location information to the car navigation system 22 (step S303). After that, when the car navigation system 22 searches for a route to the destination using the road traffic information acquired from the road traffic system (not shown), the car navigation system 22 sets the route so as not to pass through the disaster location indicated by the disaster location information. The search is performed, the route obtained as a result of the search is displayed on the display device, and the route is guided (step S304).

In the operation shown in FIG. 10, when the communication unit 14b of the management server 14 receives the measurement information, the communication unit 14b of the management server 14 transmits the disaster location information according to the received measurement information to the mobile terminal 15 via the gateway 19 including the connection gateway 190. Send.

According to the operation shown in FIG. 10, for example, disaster location information for searching for a route that does not pass through a disaster location that the vehicle 21 cannot pass through can be transmitted to the car navigation system 22. As a result, the car navigation system 22 can be made to perform accurate route guidance.

Next, the procedure of another example of the operation of the disaster information system 2 will be described. FIG. 12 is a sequence diagram showing a procedure of another example of the operation of the disaster information system 2 according to the second embodiment.

As shown in FIG. 12, the car navigation system 22 transmits the position information to the mobile terminal 15 (step S501).

When the mobile terminal 15 receives the location information, the mobile terminal 15 transmits the received location information to the management server 14 via the Internet line 18 (step S502).

When the communication unit 14b (see FIG. 5) of the management server 14 receives the location information, the control unit 14c (see FIG. 5) of the management server 14 executes the rescue information transmission process (step S503).

Here, the rescue information transmission process will be described. FIG. 13 is a flowchart showing the flow of the rescue information transmission process according to the second embodiment. As shown in FIG. 13, the control unit 14c (see FIG. 5) of the management server 14 refers to the stored contents of the storage unit 14a and determines whether or not the position of the vehicle 21 indicated by the position information is a disaster location. Determine (step S601). Here, as described above, the storage unit 14a stores the measurement information, the identifier of the node 12, the identifier of the street light 16, the information without disaster or the information with disaster, and the position of the street light 16 in association with each other. ing. That is, in step S601, the control unit 14c determines whether or not the disaster information is associated with the identifier of the street light 16 located within a predetermined range (for example, within several tens of meters) from the position of the vehicle 21. Therefore, it is determined whether or not the position of the vehicle 21 is a disaster place.

If it is not a disaster location (step S601: No), the control unit 14c ends the rescue information transmission process. On the other hand, in the case of a disaster location (step S601: Yes), the control unit 14c performs the following processing in order to rescue the passenger (disaster target) who is in the vehicle 21 located at the disaster location. .. For example, the control unit 14c transmits information (rescue information) indicating that the disaster target is located at the disaster location to the mobile terminal 15 held by the ambulance crew, so that the communication unit 14b of the management server 14 (FIG. 5) See) (step S602). Then, the control unit 14c ends the rescue information transmission process.

When the control unit 14c controls the communication unit 14b so as to transmit the rescue information in step S602, as shown in FIG. 12, the communication unit 14b (see FIG. 5) of the management server 14 transmits the rescue information to the Internet line. It is transmitted to the mobile terminal 15 of the ambulance crew via 18 (step S504).

When the ambulance crew's mobile terminal 15 receives the rescue information, it displays the received rescue information on the display device of the mobile terminal 15 and urges the ambulance crew to rescue the disaster-affected target located in the disaster location (step). S505).

In the operation shown in FIG. 12, when the communication unit 14b of the management server 14 receives the position information from the passenger located at the disaster location according to the received measurement information, the rescue indicating that the disaster target is located at the disaster location. The information is transmitted to the mobile terminal 15 of the ambulance crew.

According to the operation shown in FIG. 12, for example, in the event of a disaster, the position of the disaster-affected object located at the disaster location can be grasped by the ambulance crew performing the rescue. As a result, paramedics can be made to rescue quickly.

The disaster information systems 1 and 2 according to each embodiment have been described above. According to the disaster information systems 1 and 2, the running cost can be suppressed as described above.

The present invention is not limited to the above embodiments. The present invention also includes a configuration in which the above-mentioned components are appropriately combined. Further, further effects and modifications can be easily derived by those skilled in the art. Therefore, the broader aspect of the present invention is not limited to the above-described embodiment, and various modifications can be made.

1, 2, disaster information system, 10 water level gauge, 11 rain gauge, 12 nodes, 12a storage unit, 12b communication unit (example of first communication unit), 12c control unit, 13 lighting device (example of notification device), 14 Management server, 14c control unit, 14a_1 map data, 14a_2 correspondence table, 14b communication unit (an example of the fourth communication unit), 15 mobile terminals, 16 street lights, 17 communication networks, 18 internet lines, 19 gateways, 19b communication. Unit (an example of the second communication unit), 19c communication unit (an example of the third communication unit), 21 vehicles, 22 car navigation system, 190 connection gateway

Claims (6)

Multiple nodes connected to the measurement unit that measures the measured values related to the event that causes the disaster,
A plurality of gateways, each of which is directly or indirectly connected to one of the plurality of nodes,
A management server to which at least one of the plurality of gateways is connected and
A mobile terminal held by the user in the vehicle and
A car navigation system mounted on the vehicle and communicating with the mobile terminal,
With
The node includes a gateway connected to the node and a first communication unit that communicates with other nodes.
The gateway includes a second communication unit that communicates with a node connected to the gateway and a third communication unit that communicates with another gateway.
The management server includes a fourth communication unit that communicates with the gateway connected to the management server and also communicates with the mobile terminal.
The first communication unit of the node transmits measurement information indicating the measured value measured by the measurement unit to the management server via the gateway.
The management server includes a control unit that determines whether or not a disaster has occurred at the positions of the plurality of nodes based on the measurement information.
Upon receiving the response request from the mobile terminal, the fourth communication unit of the management server transmits disaster information indicating whether or not the disaster has occurred at the positions of the plurality of nodes to the mobile terminal.
When the car navigation system receives the disaster information from the mobile terminal, the car navigation system searches for a route that does not pass through the position where the disaster has occurred based on the disaster information, and guides the searched route to the user.
Disaster information system. When the management server determines that the disaster has occurred based on the measurement information, the fourth communication unit of the management server issues a notification control instruction according to the measurement information via the gateway. , Send to the node determined that the disaster has occurred,
When the first communication unit of the node receives the notification control instruction, the node determined that the disaster has occurred causes the notification device to notify the user of the disaster based on the received notification control instruction. It is equipped with a control unit that notifies the information of
The disaster information system according to claim 1. When the management server determines that the disaster has occurred, it is determined that the fourth communication unit of the management server issues the notification control instruction via the gateway and further determines that the disaster has occurred. Send from the above node to other nodes located within the specified range,
When the first communication unit of the other node receives the notification control instruction, the other node causes the notification device to notify the user of the disaster information based on the received notification control instruction. Equipped with a control unit
The disaster information system according to claim 2. When the fourth communication unit of the management server further receives the position information from the disaster target located at the disaster location according to the measurement information, it indicates that the disaster target is located at the disaster location. Sending information to the mobile terminal,
The disaster information system according to any one of claims 1 to 3. Upon receiving the response request from the mobile terminal, the fourth communication unit of the management server further transmits the measurement information to the mobile terminal.
The disaster information system according to any one of claims 1 to 4. The disaster information system according to any one of claims 1 to 5, wherein at least one of the node, the gateway, and the management server is shared by the disaster information system and other systems.

Images