JP7283153B2 - Slave station, method and program - Google Patents

Description

The present disclosure relates to slave stations, methods, and programs, and in particular, outputs (broadcasts) alerts to disaster risk areas that are predicted to be affected by disasters according to disaster types, even when slave stations move. related to a slave station, method and program capable of performing

A broadcast radio system (disaster prevention radio system) in which a plurality of sub-station facilities receive a broadcast instruction from a master station facility, and each of the plurality of sub-station facilities broadcasts loudly to local residents based on the broadcast instruction. It has been known.

Non-Patent Literature 1 and Non-Patent Literature 2 describe that, in a broadcast radio system, a plurality of slave station facilities receive a radio signal from a master station facility, and each of the plurality of slave station facilities converts the received radio signal into a voice signal. It is described that the loudspeaker broadcasting is performed after conversion to . In such a broadcast radio system, the group number for receiving the necessary broadcasts for the slave station equipment is set in consideration of the situation (geographical conditions, surrounding environment, etc.) of the location where the slave station equipment is installed at the time of system maintenance. Set to slave station equipment. When performing loudspeaker broadcasting, the operator of the master station equipment selects an identifier such as the slave station number of the slave station equipment to be broadcasted, or an identifier such as the group number set for the multiple slave station equipment to be broadcasted. to issue a broadcast instruction. When the slave station equipment receives a broadcast instruction from the master station equipment, the slave station number and group number registered in the slave station equipment itself match the slave station number and group number specified in the broadcast instruction. Broadcasting is performed if it matches, and no broadcasting is performed if it does not match. Then, the slave station equipment can be relocated as needed. Slave station equipment, especially individual receivers, can be installed in public facilities and homes to receive broadcasts, and can be carried when evacuating or moving. Also, if the slave station equipment breaks down, the equipment can be relocated from another location or replaced with a replacement to continue operation. However, the operator of the master station equipment must grasp the relocation status of the slave station equipment in real time, and rewrite all the group numbers registered in the moved, relocated, or replaced slave station equipment according to the rules established at the time of system maintenance. is difficult. As a result, with the passage of time after system operation, the group number set for the slave station equipment based on the geographical conditions of the installation location at the start of the system and the group number to be set corresponding to the actual installation location become different. inconsistent.

In Patent Document 1, when a user wants to change the ID of any station in the system, a system change message is sent all at once from the console, and the master station changes the system by broadcast communication via a relay station. The message is sent as an ID rewriting message to the slave stations and the receivers for each home, and the slave stations and the receivers for each home that have received the ID rewriting message analyze the message and include change information of their own station ID in the ID rewriting message. is included, it is disclosed that the own station ID is rewritten. The content disclosed in Patent Document 1 is based on the premise that the user (operator) of the master station knows all the installation locations and IDs (identification numbers) of the slave stations. Therefore, if the operator does not know all of the installation locations and IDs of the child stations, it is difficult to set and change the group number of each child station as intended.

JP-A-2003-249891 Municipal Digital Broadcast Communication System Standard ARIB STD-T86 Version 3.0, Association of Radio Industries and Businesses, Revised May 29, 2007 ARIB STD-T115 Version 2.0, Municipal Digital Broadcast Communication System TYPE2 Standard, Association of Radio Industries and Businesses, Revised on July 6, 2016

As described above, as time passes after operation, the group number set for the slave station equipment based on the geographical conditions of the installation location at the start does not match the group number that should be set corresponding to the actual installation location. It happened to be. As a result, it becomes difficult for the master station equipment to issue an instruction for loudspeaker broadcasting to appropriate slave station equipment, and there is a problem in that it issues a broadcast instruction to slave station equipment in all regions. In addition, when residents carry their receivers with them during evacuation, the group numbers registered in the receivers are set based on the geographical conditions of the place of installation before they are transported. There was a problem that it was not possible to receive the broadcast for the area including the later evacuation site. In addition, the group number set based on the geographical conditions of the installation location before the slave station carries the receiver is broadcast unrelated to the area including the evacuation site after carrying the receiver. There was a problem that the broadcast corresponding to the In addition, there is a problem that the operator of the master station equipment no longer instructs the sub-station equipment to use the group number for loudspeaker broadcasting, and instructs the sub-station equipment to broadcast collectively for all areas.

An object of the present disclosure is to provide a slave station, a method, and a program that solve any of the problems described above.

The slave station according to the present disclosure is
a receiving unit for receiving the current position of the slave station;
a storage unit that stores a hazard map showing a disaster risk area predicted to be affected by a disaster in the event of a disaster for each disaster type;
a control unit that updates the disaster type of the child station predicted to be affected by the disaster based on the current position of the child station and the hazard map;
an output unit that outputs an alert when the predetermined disaster type received from the master station and the disaster type of the slave station match;
Prepare.

A method according to the present disclosure includes:
receiving the current position of the slave station;
storing a hazard map indicating a disaster risk area predicted to be affected by a disaster in each disaster type;
Updating the disaster type of the child station predicted to be affected by the disaster based on the current position of the child station and the hazard map;
outputting a warning when the predetermined disaster type received from the master station and the disaster type of the slave station match;
Prepare.

The program according to the present disclosure is
receiving the current position of the slave station;
storing a hazard map indicating a disaster risk area predicted to be affected by a disaster in each disaster type;
Updating the disaster type of the child station predicted to be affected by the disaster based on the current position of the child station and the hazard map;
outputting a warning when the predetermined disaster type received from the master station and the disaster type of the slave station match;
run on the computer.

According to the present disclosure, a slave station, a method, and a program are provided that can output warnings to disaster risk areas that are predicted to be affected by a disaster according to the type of disaster even when the slave station moves. can do.

2 is a block diagram illustrating a slave station according to Embodiment 1; FIG. 2 is a block diagram illustrating a slave station according to Embodiment 1; FIG. 4 is a diagram illustrating an information management table according to Embodiment 1; FIG. 4 is a flow chart illustrating the operation of the slave station according to Embodiment 1; 4 is a diagram illustrating a hazard map according to Embodiment 1; FIG. FIG. 10 is a diagram illustrating a disaster selection switch according to Embodiment 2; 11 is a flowchart illustrating the operation of a child station according to Embodiment 3; FIG. 12 is a flow chart illustrating the operation of a slave station according to Embodiment 4; FIG. FIG. 22 is a block diagram illustrating a child station and a parent station according to Embodiment 7; FIG. 13 is a diagram illustrating a hazard map according to Embodiment 7;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings. In each drawing, the same reference numerals are given to the same or corresponding elements, and redundant description will be omitted as necessary for clarity of description.

[Embodiment 1]
A configuration of a slave station according to Embodiment 1 will be described.
1A is a block diagram illustrating a slave station according to Embodiment 1. FIG.
1B is a block diagram illustrating a slave station according to Embodiment 1. FIG.

As shown in FIG. 1A , slave station 12 according to Embodiment 1 includes interface section 121 , control section 122 , storage section 123 , antenna 124 and output section 125 . The interface unit 121 has a receiving unit 121a. The storage unit 123 has an information management table 123a and a group number storage unit 123b. Incidentally, the child station may be called a child station facility, and the output section may be called a speaker or a loudspeaker section. The output unit can output not only sound but also a screen to a display unit (not shown).

The interface section 121 has a connection section (not shown), a network connection section (not shown), and a GPS connection section (not shown). The connection unit connects to an information terminal such as a mobile phone or a smart phone by wire or wirelessly. The network connection unit connects to the Internet, an intranet, or the like. The GPS connection unit connects with a GPS (Global Positioning System).

The receiving unit 121a of the interface unit 121 receives the current position of the slave station 12 using GPS (Global Positioning System).

The storage unit 123 stores a hazard map showing disaster risk areas predicted to be affected by a disaster in the event of a disaster for each disaster type. Disaster types include, for example, river flooding, floods, landslide disasters, fires, crowd warnings, and the like. Details of the hazard map will be described later. The storage unit 123 stores an information management table 123a in which disaster types are linked to group numbers. The information management table may also be called a group number assignment information management table.

If the slave station 12 uses a network storage or the like instead of the storage unit 123 via the interface unit 121, the storage unit 123 does not have to be provided in the slave station 12 as shown in FIG. 1B. . The configuration of the child station 12 shown in FIG. 1B is the minimum configuration.

An information management table showing the relationship between disaster types and group numbers will now be described.
FIG. 2 is a diagram exemplifying an information management table according to the first embodiment.

As shown in FIG. 2, the information management table 123a according to the first embodiment associates a group number with each disaster type (type). That is, the disaster type is associated with the group number.

Specifically, the disaster type “flooding of rivers” is associated with group number 2000 , and the disaster type “flood” is associated with group number 2100 . The disaster type “landslide disaster” is linked to the group number 2200, and the disaster type “fire” is linked to the group number 3000. The disaster type “radiation dose caution” is linked to the group number 3100 , and the disaster type “crowd caution” is linked to the group number 3200 . The type “evacuation center public facility A” is associated with group number 5000 , and the type “post fire brigade” is associated with group number 7000 .

The control unit 122 updates the disaster type of the child station 12 that is predicted to be affected by a disaster based on the current position of the child station 12 and the hazard map. The disaster type of the slave station 12 is stored in the storage unit 123 . Since the disaster type is linked to the group number as in the information management table 123a, the slave station 12 stores the group number linked to the disaster type in the group number storage unit 123b.

The control unit 122 updates the disaster type of the slave station 12 based on whether or not the disaster type corresponding to the current position of the slave station 12 matches the disaster type stored in the slave station 12 in advance. Specifically, when the disaster type corresponding to the current position of the slave station 12 and the disaster type stored in advance by the slave station 12 do not match, the control unit 122 determines the current position of the slave station 12. The disaster type is updated as the disaster type of the child station 12 . Also, if the disaster type corresponding to the current position of the slave station 12 matches the disaster type stored in the slave station 12 in advance, the control unit 122 does not update the disaster type of the slave station 12 .

When the disaster type is associated with the group number as in the information management table 123a shown in FIG. 2, the control unit 122 operates as follows.

The control unit 122 stores the group number associated with the disaster type corresponding to the current position of the child station 12 and the group number associated with the disaster type previously stored in the group number storage unit 123b of the child station 12. , matches or not. Then, the control unit 122 updates the group number associated with the disaster type of the slave station 12, that is, the group number stored in the group number storage unit 123b, based on the confirmation result.

A master station transmission unit (not shown) of the master station 11 transmits a predetermined disaster type among a plurality of disaster types to the slave station 12 . The receiving unit 121a of the slave station 12 receives, via the antenna 124, a broadcast of a predetermined disaster type among a plurality of disaster types from the master station 11. FIG. Note that the master station may also be referred to as master station equipment.

When the predetermined disaster type received from the master station 11 and the disaster type of the slave station 12 match, the output unit 125 outputs an alert. That is, the output unit 125 outputs (enhances) the broadcast received from the master station 11 .

When the disaster type corresponding to the current position of the slave station 12 and the disaster type stored in advance by the slave station 12 do not match, the slave station 12 according to Embodiment 1 corresponds to the current position of the slave station 12. The disaster type to be updated as the disaster type of the child station 12 . When the disaster type received from the master station 11 matches the disaster type of the slave station 12, the slave station 12 outputs a warning.

As a result, even when the slave station 12 moves, it is possible to output a warning to a disaster risk area that is predicted to be affected by a disaster according to the type of disaster.

An outline of the operation of the slave station according to Embodiment 1 will be described.
3 is a flowchart illustrating an operation of a child station according to Embodiment 1. FIG.

The slave station 12 has an input device connector (not shown). The input device connection unit has buttons, switches, dials, touch panels, keyboards, mice, and the like. The operator of slave station 12 uses these buttons and the like to set information for specifying broadcasts that need to be received.

The slave station 12 updates information for identifying broadcasts that need to be received (step S101). The information for specifying the broadcast that needs to be received includes, for example, information specifying the installation location (current location) of the slave station 12, information on the type of disaster corresponding to the broadcast to be listened to, and information on the broadcast other than the installation location. It is the information etc. which designates the area which wants to hear.

Information for specifying the installation location of the slave station 12 includes, for example, position information received using GPS. The information for specifying the installation location of the slave station 12 also includes identifier information such as the SSID (Service Set Identifier) of the IEEE802.11 standard access point used in each public facility.

In Embodiment 1, an example will be described in which the information for specifying the broadcast that needs to be received is the current position of the slave station 12 . In this case, the slave station 12 matches the group number linked to the disaster type corresponding to the current location of the slave station 12 with the group number linked to the disaster type stored in the slave station 12 in advance. confirm whether or not If there is no match as a result of checking, the slave station 12 updates the group number linked to the disaster type corresponding to the current location of the slave station 12 as the group number linked to the disaster type of the slave station 12, Stored in the group number storage unit 123b.

After step S101, the slave station 12 checks whether or not the group number assignment information (information management table 123a) in the system has been updated (step S102).

If the group number assignment information in the system is updated (step S102: Yes), the slave station 12 updates the group number assignment information in the system (step S103).

If the group number assignment information in the system is not updated (step S102: No), the slave station 12 compares the information for specifying the broadcast that needs to be received with the group number assignment information in the system (step S104). ).

If the child station 12 determines that the group number set in the child station 12 needs to be updated as a result of the comparison in step S104 (step S106: Yes), the group number set in the child station 12 is dynamically updated. (step S107).

As a result of the comparison in step S104, if the slave station 12 determines that there is no need to update the group number set in the slave station 12 (step S106: No), it returns to step S101.

The group number assignment information in the system is the information management table 123a that manages the disaster type and the group number in association with each other, or the hazard map information that is associated with the group number.

In Embodiment 1, the information management table 123a indicating group number assignment information in the system is stored in the storage unit 123 of the slave station 12 as an example, but the present invention is not limited to this. The information management table 123a may be centrally managed by the master station 11 and transmitted from the master station 11 to the slave station 12 when updating the group number stored in the storage unit 123 of the slave station 12, for example.

After dynamically updating the group number set in the slave station 12 (after step S107), the master station 11 designates the group number and performs loudspeaker broadcasting to the slave station 12 . As a result, the slave station 12 can reliably receive the broadcast that the user of the slave station 12 should listen to or want to listen to.

Details of the operation of the slave station according to Embodiment 1 will be described.
FIG. 4 is a diagram illustrating a hazard map according to Embodiment 1. FIG.

The slave station 12 stores the group number of the slave station 12 and group number allocation information in the system in the storage unit 123 . Group number assignment information in the system is stored as an information management table 123a shown in FIG. The group number of the child station 12 is stored in the group number storage section 123b. The information for specifying the broadcast that needs to be received consists of information on the current position of slave station 12 received from the GPS connected to interface section 121 .

First, as shown in FIG. 4, the case where the slave station 12 is installed in a house along a river will be described. In this case, based on the location information of the GPS connected to the interface unit 121 of the slave station 12 and the hazard map associated with the group number stored in the storage unit 123, disasters targeting areas along rivers are performed. The slave station 12 stores (registers) group numbers for receiving broadcasts relating to the type “river flood”, the disaster type “flood”, and the disaster type “tsunami”. For example, the hazard map is assigned a group number according to the area as shown in FIG. Then, the group number storage unit 123b of the slave station 12 stores the group number to which the current position of the slave station 12 is assigned in the hazard map.

Here, the disaster type and group number assigned to the location information of the slave station 12 are group number 2000 corresponding to the disaster type "river flood" and disaster type "flood" from the hazard map (see Fig. 4). A corresponding group number 2100 and a group number 2300 corresponding to the disaster type "tsunami". Therefore, at least the group number 2000, the group number 2100 and the group number 2300 are stored in the group number storage section 123b of the storage section 123 of the child station 12. FIG.

The group number 3000, group number 3100, and group number 3200 stored in the information management table 123a shown in FIG. 2 are group numbers related to disaster warning that are not necessarily based on geographical conditions. Group number 5000, group number 5100, group number 5200, and group number 5300 are group numbers related to shelters. A group number 7000, a group number 7100, and a group number 7200 are group numbers related to positions. One or more of them may be stored in the information management table 123a of the storage unit 123 of the slave station 12, or may not be stored.

The slave station 12 dynamically determines whether or not to store the group number 2000, group number 2100, group number 2200, group number 2300, and group number 2400 on the hazard map in the storage unit 123 of the slave station equipment 12. do.

Next, a case will be described in which the operator of the slave station 12 takes refuge in a mountainous area with the slave station 12 as indicated by the arrow in FIG. In this case, the control unit 122 of the slave station 12 stores the location information of the GPS connected to the interface unit 121 and the hazard map associated with the group number stored in the storage unit 123 in advance in the storage unit 123. Update the stored group number.

Specifically, the control unit 122 refers to the hazard map, and based on the location information of the slave station 12, selects the disaster type "river flooding" for the area along the river previously stored in the slave station 12. , and the group numbers 2000, 2100, and 2300 for receiving broadcasts relating to the disaster type "flood" and the disaster type "tsunami" are deleted from the storage unit 123. In addition, the control unit 122 refers to the hazard map, and based on the position information of the slave station 12, stores the group number 2200 for receiving the broadcast regarding the disaster type “landslide disaster” targeting mountainous areas. 123 and store it.

As a result, after the operator takes the slave station 12 and evacuates to a mountainous area, the slave station 12 is not required at the evacuation destination. We will not broadcast, but will broadcast about the disaster type "landslide disaster" that is necessary at the evacuation destination. As a result, the local residents can view the broadcast regarding the disaster type "landslide disaster" required at the evacuation site.

As a result, even when the slave station 12 moves, it is possible to output a warning to the disaster risk area that is predicted to be affected by the disaster according to the disaster type.

Further, the slave station 12 according to Embodiment 1 automatically updates the disaster type of the slave station predicted to be affected by a disaster based on the current position (installation location) of the slave station 12 and the hazard map. As a result, the operator of the master station 11 or the slave station 12 can broadcast from the slave station 12 for the installation location of the slave station 12 without being conscious of the group number of the slave station 12 to be broadcasted. can.

As a result, it is possible to prevent a mismatch between the group number set based on the geographical conditions of the installation location during system maintenance and the group number corresponding to the actual installation location of the slave station 12 .

For this reason, the broadcast operation with the group number is abolished due to the failure of the system operation rule, and the broadcast instructed to be broadcast with the group number for the region of the destination after the slave station 12 is moved cannot be received. can be resolved. Also, it is possible to eliminate the problem of receiving a broadcast instructed by the group number for the area before the move.

Furthermore, since the slave station 12 broadcasts loudspeaker broadcasts to an appropriate range, it is possible to prevent local residents from losing trust in the contents of the loudspeaker broadcasts, that is, from disrespecting the contents of the broadcasts. As a result, when the slave station 12 broadcasts an evacuation instruction or the like regarding a disaster, the local residents can voluntarily evacuate by trusting the contents of the loudspeaker broadcast.

[Embodiment 2]
The slave station 12 according to Embodiment 2 uses other information in addition to GPS information, that is, information on the current position of the slave station 12, as information for specifying a broadcast that needs to be received.
FIG. 5 is a diagram exemplifying a disaster selection switch according to the second embodiment.

The interface unit 121 of the slave station 12 according to Embodiment 2 has a disaster selection switch 126 as shown in FIG. The disaster selection switch 126 is a switch for selecting a disaster (predetermined disaster) whose broadcast is always heard from among a plurality of disaster types. The slave station 12 uses the information of the disaster selected using the disaster selection switch 126 together with the information of the current position using GPS as the information for specifying the broadcast that needs to be received.

When the setting unit 126s of the disaster selection switch 126 is set to "receive", the control unit 122 of the slave station 12 reads the group number corresponding to the disaster set to "receive" from the information management table 123a. The group number is stored in the group number storage section 123b.

As a result, the group number corresponding to the disaster set to "reception", that is, the disaster (predetermined disaster) that must listen to the broadcast is stored in the group number storage unit 123b. The receiving unit 121a of the slave station 12 receives information about the predetermined disaster from the master station 11, because the group number storage unit 123b stores disasters (predetermined disasters) for which broadcasts must be listened to. The output unit 125 broadcasts information regarding a predetermined disaster.

When the setting unit 126s is set to "no control", the control unit 122 of the slave station 12 determines which disaster broadcast to receive based on information other than the information set by the disaster selection switch 126. . The control unit 122 reads the group number corresponding to the determined disaster from the information management table 123a and stores it in the group number storage unit 123b.

The control unit 122 of the slave station 12 determines that the disaster type for which the setting unit 126s has been set to “reject” will not receive the broadcast related to that disaster type, and selects the corresponding disaster type from the group number storage unit 123b. Delete group number.

Here, the operation of the second embodiment will be described with a specific example. First, a case will be described where an operator who operates the slave station 12 lives in a mountainous area and a relative of the operator lives along the coast. Since the operator wants to know the status of his relatives, he may want to watch a broadcast along the overseas coast where his relatives live, for example, a broadcast about the disaster type "tsunami." In this case, the operator sets the disaster type "tsunami" setting section 126s of the disaster selection switch 126 to "receive". By setting the setting section 126s to "receive", the operator can listen to the broadcast of the group number for the disaster type "tsunami".

Further, when the operator sets the setting section 126s of the disaster type "landslide disaster" to "no control", the slave station 12 operates as follows.

The slave station 12 targets the disaster type "earthslide disaster" based on the information of the current position of the slave station 12 measured by the GPS and the hazard map linked to the group number stored in the storage unit 123. Determines whether or not to listen to the broadcast of the group number. Since the slave station 12 is installed in a mountainous area, based on the information on the current position and the hazard map linked to the group number stored in the storage unit 123, a disaster targeting the mountainous area is performed. A group number 2200 for receiving broadcasts related to the type "landslide disaster" is stored.

Accordingly, in order to listen to the broadcast regarding the disaster type "landslide" and the disaster type "tsunami", the group number storage unit 123b of the storage unit 123 of the slave station 12 stores at least group numbers 2200 and 2300. is stored.

Next, a case where the operator of the slave station 12 moves to an urban area will be described. In this case, the control unit 122 of the slave station 12 stores information on the current position of the slave station 12 measured by GPS and a hazard map associated with the group number stored in the storage unit 123. update the group number stored in

Specifically, the control unit 122 determines that the disaster type is “photochemical smog” for urban areas because the information on the current position of the slave station 12 measured by GPS is an urban area. The control unit 122 deletes the group number 2200 for receiving the broadcast regarding the disaster type "landslide" from the group number storage unit 123b of the storage unit 123, and deletes the group number 2200 for receiving the broadcast regarding the disaster type "photochemical smog". The number 2400 is newly added and stored.

Note that if the child station 12 has not changed the setting of the disaster selection switch 126, the group number 2300 for receiving the broadcast targeting the disaster type "tsunami" remains stored in the storage unit 123, and the broadcast Receivable status continues.

In addition to listening to disaster information linked to the installation location of the slave station 12 (current position), the slave station 12 according to Embodiment 2 uses the disaster selection switch 126 to select the broadcast (disaster information ) and unnecessary disaster information can be selected.

As a result, the broadcasting of disaster information unilaterally from the master station 11 to the local residents (listeners) via the child station 12 is improved to broadcast disaster information selected by the operator of the child station 12. bottom.

[Embodiment 3]
In addition to the geographic conditions of the installation location, the slave station 12 according to the third embodiment is configured to detect information related to people's movements, such as the time, season, whether or not an event is held in the vicinity, the time of the event, crowd detection information, etc. Based on this, the group number of the child station 12 to be broadcasted by disaster type is determined.

For example, at night when there is no event held, the slave station 12 that should broadcast the type of broadcast for calling attention to crowd congestion, "Crowd Attention", may be limited to those located in downtown areas even in urban areas.

On the other hand, when an event or the like is held along the coast in the daytime in summer, and people gather from all over Japan, the slave station 12 that should broadcast the type "Crowd Attention" should to the slave station 12 installed in a wide area including the main street along the coast.

In this case, the information for specifying the broadcast that needs to be received by the child station 12 includes information on the current position of the child station 12 stored in the storage unit 123, a hazard map linked to the group number, time, season, Information on the presence or absence of events in the vicinity, information on crowd detection, etc.

The control unit 122 analyzes these pieces of information and compares them with the information management table 123 a stored in the storage unit 123 . As a result of the collation, the control unit 122 determines whether to store the group number 3200 for receiving the broadcast of the type “crowd caution” in the storage unit 123 or delete it.

The operation of the control unit 122 will now be described in more detail.
6 is a flowchart illustrating the operation of a child station according to Embodiment 3. FIG.

As shown in FIG. 6, the control unit 122 receives from the interface unit 121 the presence or absence of an event in the operation area and its surrounding area, the time (schedule) of the event, the location of the event, the estimated number of people at the event, and road congestion information. , information on the movement of crowds, etc. are collected from, for example, the following information sources (step S201).

Sources of information include home pages of local governments on the Internet (HPs), social networking services (SNSs), map information sites, sites of the Japan Road Traffic Information Center, and the like.

The control unit 122 collects information from these sources, and may collect crowd movement information from a proprietary crowd detection system as needed.

The control unit 122 associates the collected information with time information held in an integrated circuit such as a real-time clock or time information obtained from a public NTP (Network Time Protocol) service on the Internet, and stores the information in the storage unit 123. (step S201).

The control unit 122 stores the presence or absence of an event in the operation area and its surrounding area stored in the storage unit 123, the time of the event, the location of the event, the estimated number of people at the event, road congestion information, information on the movement of crowds, etc. The following is calculated based on (step S202).

The control unit 122 calculates an evacuation plan for each area where people are concentrated and each disaster type (step S202). The evacuation plan for each disaster type is the size of space required as an evacuation route and evacuation destination when a disaster occurs for each disaster type.

The control unit 122 compares the area where people are concentrated and the evacuation plan for each disaster type with the area where the disaster is assumed in the hazard map linked to the group number and the area that will be the evacuation route when the disaster occurs (step S203). Based on the result of the comparison, the control unit 122 creates hazard map information for each disaster type and stores it in the storage unit 123 (step S203).

The control unit 122 confirms whether or not to update the GPS position information (information on the current position of the child station 12) (step S204). When the GPS location information is updated (step S204: Yes), the control unit 122 stores the GPS location information in the storage unit 123 (step S205).

In the process of step S204, if the position information already stored in the storage unit 123 is the same as the information on the current position of the child station 12 received from the GPS, the control unit 122 stores the information on the current position. The process of storing in the unit 123 is omitted (step S204: No).

For each disaster type stored in the information management table 123a, the control unit 122 compares the hazard map information for each disaster type with the GPS location information. Based on the result of the comparison, the control unit 122 updates the group number stored in the group number storage unit 123b to which the child station 12 should be broadcast (step S206).

The control unit 122 may periodically perform the processes from step S201 to step S206 at arbitrary intervals.

In this way, the control unit 122 controls the presence or absence of an event, the time of the event, the place of the event, the estimated number of people at the event, the season of the event, road congestion information, and crowd movement information. Based on the information, the disaster type of the slave station 12 is updated.

The slave station 12 according to Embodiment 3 can broadcast disaster-related information not limited to geographical conditions to an appropriate range depending on the time and situation.

In addition, the slave station 12 can broadcast area-limited public information and administrative guides during normal times, for example, other than when disaster-related broadcasts are broadcast. For example, when the child station 12 broadcasts an administrative guidance limited to the area where the evacuation drill is conducted, the control unit 122 receives information indicating the target area of the evacuation drill and information on the current location of the child station 12 (GPS location information). ) and .

The control unit 122 selects a group number linked to the information of the evacuation drill from the information management table 123a of the storage unit 123, and sets the selected group number only to the slave stations 12 to be notified of the evacuation drill. As a result, the system can be operated smoothly and error-free even in normal times.

[Embodiment 4]
The slave station 12 according to Embodiment 4 determines the group number of the broadcast to be received by the slave station 12, using a fire or the like whose situation changes in real time as a disaster type.

In a fire, the direction of the smoke and the spread of the fire change in real time depending on the direction of the wind, the surrounding conditions, the climate, and so on. Also, fires can occur in multiple locations at the same time.

In this case, the control unit 122 of the slave station 12 collects fire information on the Internet from the network connection unit of the interface unit 121 and receives information on the current location of the slave station 12 from the GPS connected to the interface unit 121. analysis.

The control unit 122 of the child station 12 checks the analysis result against the information management table 123a of the storage unit 123. FIG. As a result of the collation, the control unit 122 of the slave station 12 stores the group number 3000 for receiving the fire broadcast in the storage unit 123, or stores the group number for receiving the fire broadcast from the storage unit 123. 3000 is deleted or not.

Here, the processing of the control unit 122 when the disaster type is "fire" will be described in more detail.
7 is a flowchart illustrating the operation of a child station according to Embodiment 4. FIG.

As shown in FIG. 7, the control unit 122 receives from the interface unit 121 the position of fire occurrence, scale of fire, spread of fire, temperature, humidity, wind direction, wind speed, weather, etc. in the operation area and its surrounding areas. Collected from the information source and stored in the storage unit 123 (step S301).

Sources of information include websites of local governments on the Internet, social networking services, websites of fire bureaus, websites of the Meteorological Agency, information delivery emails, and the like.

The control unit 122 calculates the following based on the locations of fire occurrences, the scale of fires, the extent of fire spread, temperature, humidity, wind direction, wind speed, weather (weather), etc. in the operation area and its surrounding areas stored in the storage unit 123. and stored in the storage unit 123 (step S302).

The control unit 122 calculates the area that may become a fire spread area and the area affected by the smoke.

The control unit 122 receives information on the current position of the slave station 12 from the GPS connected to the interface unit 121, and confirms whether or not to update the information on the current position of the slave station 12 (step S303). When the information on the current location of the child station 12 is updated (step S303: Yes), the control unit 122 stores the location information received from the GPS in the storage unit 123 (step S304).

In the process of step S303, if the position information already stored in the storage unit 123 is the same as the information on the current position of the child station 12 received from the GPS, the control unit 122 stores the information on the current position. The process of storing in the unit 123 is omitted (step S303: No).

For the disaster type “fire” stored in the information management table 123a, the control unit 122 determines the possible fire spread range and the smoke-affected area stored in the storage unit 123, and the slave station 12 current position information (GPS position information) is compared. Based on the result of the comparison, the control unit 122 updates the group number stored in the group number storage unit 123b to which the child station 12 should be broadcast (step S305).

The control unit 122 may periodically perform the processes from step S301 to step S305 at arbitrary intervals.

In this way, the control unit 122 can control the position of the fire, the scale of the fire, the spread of the fire, the temperature at the time of the fire, the humidity at the time of the fire, the wind direction at the time of the fire, the wind speed at the time of the fire, and the temperature at the time of the fire. based on the fire information including at least one of the weather, the disaster type of the child station 12 is updated.

As a result, the child station 12 according to Embodiment 4 can broadcast even a fire whose situation changes in real time to an appropriate range.

[Embodiment 5]
By connecting a sensor to the interface unit 121 of the slave station 12 according to Embodiment 5, the group number of the broadcast to be received is determined according to the surrounding environment of the slave station 12 .

Specifically, the slave station 12 connects a sensor (not shown) that measures the radiation dose to the interface unit 121 . The sensor measures the radiation dose around the child station 12 .

The control unit 122 of the child station 12 checks the information management table 123a of the storage unit 123 when the radiation dose exceeds the threshold. As a result of the comparison, the control unit 122 stores the group number 3100 for receiving the radiation dose warning broadcast in the storage unit 123, or stores the group number 3100 for receiving the radiation dose warning broadcast from the storage unit 123. 3100 is deleted.

Thus, the control unit 122 updates the disaster type of the slave station 12 based on whether or not the radiation dose around the slave station 12 exceeds the threshold.

As a result, in the fifth embodiment, broadcasting can be performed only from necessary slave stations 12 according to the surrounding environment of the slave stations 12 . As a result, it is possible to provide information to an appropriate range, prevent panic among residents, and prevent the habit of neglecting loudspeaker broadcasting.

Note that the control unit 122 may periodically perform the matching process and the determination process at arbitrary intervals.

[Embodiment 6]
The child station 12 according to Embodiment 6 determines the group number of the broadcast received by the child station 12 using SSID (Service Set Identifier).

The interface unit 121 of the slave station 12 has a detection unit (not shown) for detecting the SSID. The detection unit detects an SSID transmitted from an access point or the like in a public facility near the child station 12 . One or a plurality of detection units may exist. The master station 11 may be connected to one or more slave stations 12 .

The slave station 12 may detect the SSID using the receiving section 121a instead of the detecting section. That is, the receiving unit 121a of the slave station 12 may receive a predetermined SSID, for example, the SSID of the access point of the evacuation shelter public facility A.

The storage unit 123 stores the SSID of the access point of the public facility that serves as an evacuation center as information for specifying the broadcast that needs to be received.

The control unit 122 updates the group number linked to the disaster type of the slave station 12 based on the predetermined SSID received by the detection unit or reception unit 121a and the SSID stored in advance in the storage unit 123. .

Specifically, the control unit 122 of the slave station 12 checks whether the SSID of the public facility A pre-stored in the storage unit 123 matches the SSID detected by the detection unit. If they match, the control unit 122 compares it with the information management table 123a of the storage unit 123 and stores the group number 5000 for receiving the broadcast regarding the evacuation shelter public facility A in the storage unit 123 . At this time, the storage unit 123 may store the evacuation center public facility A by adding it to the hazard map.

Further, when the detection unit does not detect the SSID of the public facility A, the control unit 122 deletes the group number 5000 for receiving the broadcast regarding the public facility A from the group number storage unit 123b of the storage unit 123 .

Since the slave station 12 according to Embodiment 6 does not require GPS or the like, the cost of the slave station 12 can be reduced, and the slave station 12 can be further spread. In addition, according to Embodiment 6, broadcasting is performed only from the slave stations 12 installed around the evacuation center, so that people around the evacuation center can reliably view and listen to the contents of the broadcast. Moreover, according to the sixth embodiment, it is possible to prevent broadcasting to people who are not in the vicinity of the shelter, so that it is possible to appropriately distribute water and food in the event of a disaster.

[Embodiment 7]
In the system according to Embodiment 7, master station 11 updates group number assignment information in the system and transmits it to slave station 12 . The system according to the seventh embodiment differs from the system according to the first embodiment in that the master station 11 has group number assignment information (information management table).

FIG. 8 is a block diagram illustrating a system according to Embodiment 7. FIG.
FIG. 9 is a diagram illustrating a hazard map according to Embodiment 7. FIG.

As shown in FIG. 8 , the master station 11 includes a master station interface section 111 , a master station control section 112 , and an antenna 114 . The master station interface unit 111 has a master station receiver 111a and a master station transmitter 111b.

The master station interface unit 111 has one or more input device connection units (not shown), connection units (not shown), network connection units (not shown), etc., and broadcasts to the slave stations 12. It connects to the antenna 114 that transmits the instructions.

The input device connection unit has buttons, switches, dials, a touch panel, a keyboard, a mouse, and the like for the operator of the master station 11 to create, edit, and send instructions for group number assignment information in the system. The connection unit connects to information terminals such as mobile phones and smart phones by wire or wirelessly. The network connection unit connects to the Internet, an intranet, or the like.

In Embodiment 7, the master station 11 collects, from the master station interface unit 111, information related to people's movements, such as the time, season, presence or absence of events in the vicinity, time of the event, crowd detection information, and the like. . Then, the master station 11 updates the group number assignment information (the hazard map associated with the group number shown in FIG. 4) in the system.

For example, a case where a tsunami with a height of 5 meters is assumed will be described. If the disaster type "tsunami" occurs on a winter night with no event, there is a low possibility that there will be a large number of people on the coast and a low possibility that the evacuation route will be congested. Therefore, the area assigned the group number 2300 for receiving the broadcast targeted for the disaster type "tsunami" may be the hazard map information associated with the group number as shown in FIG.

On the other hand, if the disaster type "tsunami" occurs during the daytime in summer and when an event is being held on the beach, there is a high possibility that there will be many people on the beach, and evacuation routes will be congested. . In this case, it is necessary to broadcast along coastlines, along roads serving as evacuation routes, and inland areas serving as evacuation destinations. Therefore, the area assigned the group number 2300 for receiving the broadcast targeted for the disaster type "tsunami" is the hazard map information associated with the group number as shown in FIG.

In this way, the master station control unit 112 of the master station 11 determines the group number and the string based on information related to people's movement, such as time, season, presence/absence of an event in the vicinity, time of the event, crowd detection information, etc. Create and update hazard map information based on The disaster type is associated with the group number shown in FIG. That is, the master station control unit 112 of the master station 11 creates a hazard map (a hazard map linked to a group number) showing disaster risk areas predicted to be affected by a disaster in the event of a disaster for each disaster type, Update the hazard map based on the presence or absence of events.

The hazard map linked to the group number may be updated not only by changing the link between the group number and the area, but also by adding or deleting categories to be broadcasted and updating the hazard map itself, if necessary.

The master station transmission unit 111b of the master station 11 transmits information on the hazard map linked to the updated group number to all child stations in the system via the antenna 114 from the master station transmission unit 111b of the master station interface unit 111. Send to 12 all at once. The master station transmission unit 111b of the master station 11 collectively sends the hazard map information linked to the group number from the master station interface unit 111 to all slave stations 12 in the system via a network or a dedicated communication network. may be sent as

The receiving unit 121a of the slave station 12 receives the hazard map information associated with the group number shown in FIG. 4 or FIG.

The control unit 122 of the child station 12 updates the hazard map information associated with the group number stored in the storage unit 123 .

The control unit 122 of the slave station 12 updates the disaster type of the slave station 12 predicted to be affected by a disaster based on the current position of the slave station 12 and the hazard map linked with the group number.

Specifically, the control unit 122 of the slave station 12 pre-stores the group number corresponding to the information on the current position of the slave station 12 (position information received from the GPS) in the hazard map and the group number storage unit 123b. Compare with the group number that was If the group numbers do not match as a result of the comparison, the control unit 122 of the slave station 12 stores and updates the group number associated with the disaster type corresponding to the current location of the slave station 12 in the group number storage unit 123b.

When a predetermined disaster type is selected from among a plurality of disaster types, the master station transmission unit 111b transmits the group number associated with the predetermined disaster type to the child station 12 . In the slave station 12, the group number linked to the predetermined disaster type received from the master station 11 matches the group number linked to the disaster type of the slave station 12 and stored in the group number storage unit 123b. In this case, the output unit 125 outputs a warning.

In Embodiment 7, the information transmitted from the parent station 11 to the child station 12 does not include information corresponding to the number of child stations 12 or the child station number for identifying the child station 12 .

As a result, all of the system configuration information can be kept secret without being affected by the movement of the slave station 12, the replacement of the slave station 12, the addition of the slave station 12, the change of the group number, the change of the slave station number, etc. group number of the child station 12 can be updated in real time.

As a result, according to Embodiment 7, it is possible to broadcast to an appropriate range according to the disaster occurrence time, disaster type, and the like.

Note that the master station 11 may update the group number assignment information in the system at any timing. Also, the master station 11 may transmit group number assignment information within the system to the slave station 12 at any frequency.

Also, the master station 11 may transmit to the slave station 12 the difference from the previously transmitted group number allocation information in the system. Also, the master station 11 may transmit the entire group number assignment information in the system to the slave station 12 .

Moreover, in the above embodiments, the present invention has been described as a hardware configuration, but the present invention is not limited to this. The present invention can also be implemented by causing a CPU (Central Processing Unit) to execute a computer program to process each component.

In the above embodiments, the programs can be stored and delivered to computers using various types of non-transitory computer readable media. Non-transitory computer-readable media include various types of tangible storage media. Examples of non-transitory computer-readable media include magnetic storage media (specifically flexible disks, magnetic tapes, hard disk drives), magneto-optical storage media (specifically magneto-optical disks), CD-ROMs (Read Only Memory ), CD-R, CD-R/W, semiconductor memory (specifically, mask ROM, PROM (Programmable ROM), EPROM (Erasable PROM)), flash ROM, and RAM (Random Access Memory). The program may also be delivered to the computer on various types of transitory computer readable medium. Examples of transitory computer-readable media include electrical signals, optical signals, and electromagnetic waves. Transitory computer-readable media can deliver the program to the computer via wired channels, such as wires and optical fibers, or wireless channels.

Although the present invention has been described with reference to the embodiments, the present invention is not limited to the above. Various changes that can be understood by those skilled in the art can be made to the configuration and details of the present invention within the scope of the invention.

It should be noted that the present invention is not limited to the above embodiments, and can be modified as appropriate without departing from the scope of the invention.

Some or all of the above-described embodiments can also be described in the following supplementary remarks, but are not limited to the following.
(Appendix 1)
a receiving unit that receives the current position of its own station;
a storage unit that stores a hazard map showing a disaster risk area predicted to be affected by a disaster in the event of a disaster for each disaster type;
a control unit that updates the disaster type of the own station that is predicted to occur at the time of the disaster based on the current location of the own station and the hazard map;
an output unit that outputs an alert when the predetermined disaster type received from the master station and the disaster type of the own station match;
a slave station.
(Appendix 2)
The control unit determines the disaster type of the own station based on whether or not the disaster type corresponding to the current location of the own station matches the disaster type previously stored in the own station. Update,
The slave station described in Supplementary Note 1.
(Appendix 3)
The storage unit stores an information management table in which the disaster type is associated with a group number,
The control unit matches the group number linked to the disaster type corresponding to the current location of the local station with the group number linked to the disaster type stored in advance in the local station. updating the group number linked to the disaster type of the own station based on whether or not
The slave station described in Supplementary Note 1.
(Appendix 4)
The current position of the own station is received using GPS (Global Positioning System),
The slave station according to any one of Appendices 1 to 3.
(Appendix 5)
the storage unit stores the disaster type of the own station;
5. The slave station according to any one of Appendices 1 to 4.
(Appendix 6)
further comprising a disaster selection switch for selecting a predetermined disaster from among the plurality of disaster types;
The receiving unit receives information about the predetermined disaster from the master station,
The output unit broadcasts information about the predetermined disaster.
6. The slave station according to any one of Appendices 1 to 5.
(Appendix 7)
The control unit includes at least one of presence/absence of an event, time of the event, location of the event, estimated number of people of the event, season of the event, road congestion information, and information on movement of crowds. updating the disaster type of the own station based on the event information;
7. The slave station according to any one of Appendices 1 to 6.
(Appendix 8)
The control unit controls the location of the fire, the scale of the fire, the spread of the fire, the temperature at the time of the fire, the humidity at the time of the fire, the direction of the wind at the time of the fire, the wind speed at the time of the fire, the updating the disaster type of the own station based on fire information including at least one of the weather at the time of the fire;
8. The slave station according to any one of Appendices 1 to 7.
(Appendix 9)
The control unit updates the disaster type of the own station based on whether or not the radiation dose around the own station exceeds a threshold.
The slave station according to any one of Appendices 1 to 8.
(Appendix 10)
The receiving unit receives a predetermined SSID (Service Set Identifier),
The control unit updates the disaster type of the local station based on the predetermined SSID and the SSID previously stored in the local station.
The slave station according to any one of Appendices 1 to 9.
(Appendix 11)
Equipped with a master station and a slave station,
The parent station
having a master station transmission unit that transmits a predetermined disaster type to the child station;
The slave station
a receiving unit that receives the current position of the slave station;
a storage unit that stores a hazard map showing a disaster risk area predicted to be affected by a disaster in the event of a disaster for each disaster type;
a control unit that updates the disaster type of the child station predicted to be affected by the disaster based on the current position of the child station and the hazard map;
an output unit that outputs a warning when the predetermined disaster type received from the master station and the disaster type of the slave station match,
system.
(Appendix 12)
Equipped with a master station and a slave station,
The parent station
a master station control unit that creates a hazard map showing disaster risk areas that are predicted to be affected by a disaster by disaster type;
a parent station transmission unit that transmits the hazard map to the child station;
When a predetermined disaster type is selected from among the plurality of disaster types, the master station transmitting unit transmits the predetermined disaster type to the slave station,
The slave station
a receiving unit that receives the hazard map from the master station;
a control unit that updates the disaster type of the child station predicted to be affected by the disaster based on the current position of the child station and the hazard map;
an output unit that outputs a warning when the predetermined disaster type received from the master station and the disaster type of the slave station match,
system.
(Appendix 13)
receiving the current position of the slave station;
storing a hazard map indicating a disaster risk area predicted to be affected by a disaster in each disaster type;
Updating the disaster type of the child station predicted to be affected by the disaster based on the current position of the child station and the hazard map;
outputting a warning when the predetermined disaster type received from the master station and the disaster type of the slave station match;
How to prepare.
(Appendix 14)
receiving the current position of the slave station;
storing a hazard map indicating a disaster risk area predicted to be affected by a disaster in each disaster type;
Updating the disaster type of the child station predicted to be affected by the disaster based on the current position of the child station and the hazard map;
outputting a warning when the predetermined disaster type received from the master station and the disaster type of the slave station match;
A program that makes a computer run

DESCRIPTION OF SYMBOLS 11... Parent station 111... Parent station interface part 111a... Parent station receiving part 111b... Parent station transmitting part 112... Parent station control part 114... Antenna 12... Slave station 121... Interface part 121a... Receiving part 122... Control part 123... Memory Part 123a... Information management table 123b... Group number storage part 124... Antenna 125... Output part 126... Disaster selection switch 126s... Setting part

Claims (10)

a receiving unit that receives the current position of its own station;
a storage unit that stores a hazard map showing a disaster risk area predicted to be affected by a disaster in the event of a disaster for each disaster type;
a control unit that updates the disaster type of the own station that is predicted to occur at the time of the disaster based on the current location of the own station and the hazard map;
an output unit that outputs an alert when the predetermined disaster type received from the master station and the disaster type of the own station match;
a slave station. The control unit determines the disaster type of the own station based on whether or not the disaster type corresponding to the current location of the own station matches the disaster type previously stored in the own station. Update,
The slave station according to claim 1. The storage unit stores an information management table in which the disaster type is associated with a group number,
The control unit matches the group number linked to the disaster type corresponding to the current location of the local station with the group number linked to the disaster type stored in advance in the local station. updating the group number linked to the disaster type of the own station based on whether or not
The slave station according to claim 1. further comprising a disaster selection switch for selecting a predetermined disaster from among the plurality of disaster types;
The receiving unit receives information about the predetermined disaster from the master station,
The output unit outputs information about the predetermined disaster,
The slave station according to any one of claims 1 to 3. The control unit includes at least one of presence/absence of an event, time of the event, location of the event, estimated number of people of the event, season of the event, road congestion information, and information on movement of crowds. updating the disaster type of the own station based on the event information;
The slave station according to any one of claims 1 to 4. The control unit controls the location of the fire, the scale of the fire, the spread of the fire, the temperature at the time of the fire, the humidity at the time of the fire, the direction of the wind at the time of the fire, the wind speed at the time of the fire, the updating the disaster type of the own station based on fire information including at least one of the weather at the time of the fire;
A slave station according to any one of claims 1 to 5. The control unit updates the disaster type of the own station based on whether or not the radiation dose around the own station exceeds a threshold.
A slave station according to any one of claims 1 to 6. The receiving unit receives a predetermined SSID (Service Set Identifier),
The control unit updates the disaster type of the local station based on the predetermined SSID and the SSID previously stored in the local station.
A slave station according to any one of claims 1 to 7. receiving the current position of the slave station;
storing a hazard map indicating a disaster risk area predicted to be affected by a disaster in each disaster type;
Updating the disaster type of the child station predicted to be affected by the disaster based on the current position of the child station and the hazard map;
outputting a warning when the predetermined disaster type received from the master station and the disaster type of the slave station match;
How to prepare. receiving the current position of the slave station;
storing a hazard map indicating a disaster risk area predicted to be affected by a disaster in each disaster type;
Updating the disaster type of the child station predicted to be affected by the disaster based on the current position of the child station and the hazard map;
outputting a warning when the predetermined disaster type received from the master station and the disaster type of the slave station match;
A program that makes a computer run

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