JP2004297131A - Safety confirmation system and apparatus for the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a safety confirmation system and an apparatus for the same capable of collecting safety confirmation information in an afflicted district by preventing occurrence of communication congestion. <P>SOLUTION: When detecting occurrence of a disaster, a center station 1003 predicts a scale of communication congestion estimated from a state of the disaster, decides an access limit level on the basis of a predetermined access limit operation specification, and broadcasts access limit information A to the afflicted district 4 wherein congestion of communication possibly takes place via a satellite 1 or the like. An afflicted district information terminal 5 in the afflicted district 4 generates safety information B with a data amount in response to the received access limit level and transmits the information B. A safety confirmation server 3 and a database or the like of a disaster prevention countermeasure center 9 store the safety information, information terminals 7a, 7b at the outside of the afflicted district can acquire the safety information from the safety confirmation server 3 via a network 6 so that the information terminals 7a, 7b can thereby confirm the safety in the afflicted district 4. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a safety confirmation system and a device therefor, and more particularly to a method of communicating information when performing a safety confirmation using a satellite at the time of a large-scale disaster.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, at the time of a large-scale disaster such as a large earthquake, a communication network such as a fixed telephone may be unusable due to the destruction of a communication line. Also, terrestrial mobile phones cannot be used if terrestrial infrastructure such as base stations is destroyed. Furthermore, even if the ground infrastructure is not destroyed, if severe congestion occurs, communication for safety confirmation cannot be performed efficiently.
[0003]
On the other hand, a technique is known in which safety information from a victim is transmitted using digital satellite broadcasting (for example, see Patent Document 1).
[0004]
This is a safety communication receiving device that receives safety information by telephone call from a contractor in the disaster area, a safety information database management device that creates and manages a database of received safety information, and broadcast data from the database data. It is composed of a safety information broadcast data creating device that creates and broadcasts the BS, and the broadcast data can be received by the BS digital method transmitting / receiving device.
[0005]
Further, as another example, a technology has been proposed in which safety information can be transmitted using a mobile phone even when a disaster occurs (for example, see Patent Document 2).
[0006]
That is, when a disaster occurs, the safety confirmation device is limited to a function that stops a normal call function of a mobile phone in the disaster area and only responds to a safety confirmation message from the safety confirmation device. When a safety confirmation message is sent from the safety confirmation device, the mobile phone only sends a response message to the safety confirmation device. In this way, when a disaster occurs, in the stricken area, only the line for communication between the safety confirmation message and the response message between the mobile phone and the base station is set.
[0007]
For example, JP-A-2001-76275 and JP-A-2001-168990 do not hierarchize safety information, and therefore have a function of transmitting safety information stepwise with a data amount according to access restrictions. Absent. Further, each terminal does not have means for knowing the exact situation of the access restriction.
[0008]
[Patent Document 1]
JP 2001-76275 A
[0009]
[Patent Document 2]
JP 2001-168990 A
[0010]
[Problems to be solved by the invention]
However, in the above-mentioned Patent Documents 1 and 2, all the safety information is handled as the same level of information regardless of its importance and the amount of data. Then, the occurrence of communication congestion may not be avoided, and there may be a case where safety information with high importance such as safety is not transmitted. For this reason, it is conceivable to restrict access to the safety confirmation device in stages to some extent from the information terminal. However, the configuration is not adapted to the access restriction, and it is difficult to restrict access. Further, each information terminal is not configured to respond to the exact situation of the access restriction.
[0011]
By the way, a communication system using satellites has characteristics that are suitable for emergency communication applications such as safety confirmation because a geographically dispersed terrestrial infrastructure is unlikely to be destroyed even during a disaster. .
[0012]
On the other hand, immediately after the occurrence of a disaster, a large number of safety confirmation calls are issued, so that even if the communication infrastructure is prevented from being destroyed, a large-scale congestion state may occur and communication efficiency may be significantly reduced. Also, if severe call restrictions are imposed to avoid congestion, the vast majority of users are forced to wait very long. Furthermore, a small number of users who have been able to connect to the line are more likely to engage in extra conversation other than confirming their safety, and the bandwidth that should be used by others is excessively occupied by such users.
[0013]
SUMMARY OF THE INVENTION An object of the present invention is to provide a communication system using a satellite or the like, so that even during a large-scale disaster, communication related to safety confirmation can be performed with a short waiting time while avoiding communication congestion. And a device therefor.
[0014]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides an information terminal, which obtains current access restriction information from a center station, presents the current access restriction status to a terminal user, and presents the current access restriction to the terminal user. Information such as the safety status according to the restriction status, necessary materials and voice messages is input, and information on the type and information amount according to the access restriction is transmitted at the timing according to the access restriction. The center station detects the occurrence of congestion or disaster and determines the degree of communication congestion, and transmits access restriction information according to the result of the determination to the information terminal.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram showing an embodiment of a safety confirmation system according to the present invention, wherein 1 is a satellite, 2 is a center station, 3 is a safety confirmation server, 4 is a disaster area, 5 is an information terminal (disaster area information terminal). ), 6 is a network, 7a and 7b are information terminals (information terminals outside the affected area), 8 is a voice terminal conversion device, and 9 is a disaster prevention measure headquarters.
[0016]
In this figure, in this embodiment, a center station 2, a safety confirmation server 3, a network 6, a disaster prevention headquarters 9, a disaster area information terminal 5 in the disaster area 4, a disaster area It is composed of out-of-area information terminals 7a, 7b and the like. The center station 2, the safety confirmation server 3, the disaster prevention headquarters 9, the disaster area information terminal 5, the information terminals 7 a and 7 b outside the disaster area are connected by a network 6 and can communicate with each other. Further, when transmission is performed by the network 6 in order to obtain disaster information and the like from the disaster area, communication of the disaster is concentrated in the disaster area 4 and communication congestion occurs. Since the area is in a communication congestion zone, communication between the center station 2 or the safety confirmation server 3 and the disaster area information terminal 5 can be performed via a satellite 1 line.
[0017]
In this embodiment, a function of broadcasting various information via the center station 2 and the satellite 1 is provided. Here, the broadcast is transmission for all terminals. Multicast limited to the terminal group including the affected area may be used. The center station 2 acquires the disaster information and the degree of congestion in the disaster area 4, sets an access restriction level A based on the information, and notifies (broadcasts) the information to the disaster area information terminal 5, whereby the disaster area 4 is notified. The content of the safety information transmitted from the information terminal 5 is restricted according to the access restriction level. Thereby, communication congestion in the disaster area 4 is alleviated. The safety information B corresponding to the access restriction level transmitted from the disaster area information terminal 5 is received and stored by the safety confirmation server 3 via the line by the satellite 1, and the disaster prevention measure headquarter 9 also transmits the safety information B. To be used as materials for disaster relief activities.
[0018]
The access restriction level defines the information that can be transmitted by the afflicted area information terminal 5 according to the degree of communication congestion in the afflicted area 4, and is used in the center station 2 and each information terminal as shown in FIG. It is defined by the access restriction operation specification 10.
[0019]
This specification 10 is to classify safety information into important data that must be sent even when access restrictions are severe (information on whether or not it is safe and the data amount is small) and when access restrictions are relaxed. And additional information (evacuation sites, necessary materials, and other similar information that has a relatively large data amount). Here, the access restriction refers to restricting urgent transmission from the afflicted area information terminal 5 when a situation that requires confirmation of safety occurs for some reason, including a disaster, and for confirming safety. Means the control for collecting the minimum necessary data, and the access restriction level means the degree of the control.
[0020]
In addition, the access restriction level will be eased according to the passage of time and the situation of the disaster, but the entire affected area will not be simultaneously relaxed, but the affected area will be divided into multiple areas and each section will be relaxed. By shifting the time, or grouping information terminals into multiple groups based on the information terminal's call number or unique address, shifting the timing of relaxing the access restriction level for each group, and selecting information terminals using random numbers It is also possible to group information terminals into a plurality of groups and shift the timing of relaxing the access restriction level for each group. In this way, by shifting the relaxation time of the access restriction level for each area division, each information terminal group, etc., it is also possible to prevent communication congestion occurring at such relaxation time.
[0021]
In FIG. 2, the access restriction information is defined by “control level”, “example of restriction information”, “communication data amount”, and “elapsed time from occurrence of disaster”. The access restriction information of the restriction level 3 is information including only safety information and having a small communication data amount, and can be transmitted in the shortest time after the occurrence of the disaster. The access restriction information of the restriction level 2 is small information that is transmitted when the communication data amount including the safety information and the additional information is at the restriction level 3 and is small when the time elapsed from the occurrence of the disaster is the restriction level 3. It can be transmitted in a short time. The access restriction information of the restriction level 1 is information having a relatively large amount of communication data composed of conversation-type information, and can be transmitted after a relatively long time has elapsed since the occurrence of the disaster. The access restriction information of the restriction level 0 is a case where there is no restriction on the transmission information, and can be transmitted after a long time has elapsed since the occurrence of the disaster.
[0022]
If the current access restriction value is level 3 (indicated by an arrow), the access restriction information is broadcast from the center station 2 via the communication line of the satellite 1 to the disaster-affected area 4 where communication congestion is extremely large. . Upon receiving this access restriction information, the disaster area information terminal 5 performs communication by avoiding communication congestion by making a call with the safety confirmation information B according to the current control value (access restriction level 3). Can be. The safety confirmation information B transmitted from the disaster area information terminal 5 via the satellite 1 is received by the safety confirmation server 3 and stored.
[0023]
The safety confirmation request from the information terminal outside the disaster area 4 is mainly handled by the safety confirmation server 3 so that communication from outside the disaster area 4 to the inside of the disaster area 4 is reduced or suppressed. The information terminal 7a outside the disaster area, such as a personal computer, can access the safety confirmation server 3 via the network 6 to acquire the safety information from the user of the information terminal 5 in the disaster area. In the case of the voice information terminal 7b outside the disaster area receiving a voice such as a mobile phone, the safety information can be confirmed by voice by using the voice terminal conversion device 8.
[0024]
Here, when the information terminals 7a and 7b outside the stricken area dial the number of the corresponding stricken area information terminal 4 in the stricken area 4 in order to request the safety confirmation information, If it is connected directly to the safety confirmation server 3 and notified that a disaster has occurred, and if the safety confirmation information B has been obtained from the information terminal 5 in the affected area of this dial, the information terminal in the affected area The user's safety information can be confirmed by voice or the like. At this time, if the voice information terminal 7b outside the disaster area also has a display device, the safety information may be used together with the display of characters and the like. If the voice information terminal 7b outside the affected area can be directly connected to the network 6, the safety information may be directly obtained from the safety confirmation server 3 without passing through the voice terminal conversion device 8. If the affected area 4 is located in a mid-latitude area such as Japan, if the quasi-zenith satellite that can secure a high elevation angle in the mid-latitude area besides a geostationary satellite or a low orbiting satellite as the satellite 1, the surrounding area becomes high debris There is an advantage that the safety information can be transmitted from the survived victims. Also, in the case of a quasi-zenith satellite, it moves on a celestial sphere, so even if debris or trees at a certain time make this satellite invisible to the victim, the time will elapse and the satellite will move and become communicable. Is also an advantage.
[0025]
FIG. 3 is a diagram showing a specific example of the layering of the safety confirmation information (that is, the safety information and the additional information in FIG. 2), and shows the level of access restriction in detail.
[0026]
In the figure, the layering of the safety confirmation information is made up of a basic section 11a and an extended section 11b, and "items" for numbering safety information and additional information, "contents to be stored" indicating the contents of the information, and information. 2 and "correspondence a" and "correspondence a", "b", and "transmission time request", which indicates the required transmission timing, and "relation example a, b" which indicates the relationship between the access restriction operation and the operation shown in FIG.
[0027]
The basic section 11a is a basic layer of the safety confirmation information, and indicates the safety confirmation information of items 1 to 8. The information content of these items is represented by "contents to be stored". Here, the information of item 1 is the general safety information representing the safety in a standardized form only based on whether or not it is safe. The detailed safety information including the degree of injury including the degree of injuries is defined as detailed safety information in a standardized format, the information in item 3 is the evacuation site information in a standardized coordinate format for the refuge, and the information in item 4 is the evacuation site. Evacuation site information represented by latitude and longitude, item 5 information can be expressed as detailed safety (character) information that enables detailed safety information to be expressed in characters, and item 6 information can be expressed by evacuation site by its name. E-commerce site name information, item 7 information as necessary material information for communicating necessary materials, and item 8 information as free messages that allow various messages to be expressed in free-format characters. The mat character information. The information of item 1 has an address restriction level of 3, and the degree of access restriction level 3 decreases as item 2, 3,..., And the level of access restriction level 2 decreases as item 2, 3,. The degree of is increased.
[0028]
Among the safety confirmation information, the safety confirmation information of the item 1 has the highest importance and the hierarchy is high, and as the items 2, 3,..., The importance decreases and the hierarchy decreases. The correspondence b of the access restriction level indicates the level corresponding to this hierarchy, and the safety confirmation information of item 1 is associated with level 10, and the hierarchy is reduced to item 2, item 3,. As the level decreases, it becomes 9, 8,.... The correspondence a of the access restriction level indicates the correspondence with the access restriction operation specification 10 in FIG. 2, and the access restriction level is 3 for the information of the items 1 and 2, and the items 3 and thereafter The information of item (1) is added to the information of items (1) and (2) to indicate that the access restriction level is 2.
[0029]
Further, the data amount is smaller for information of an item having a higher hierarchy. Here, the data amount is represented by the number of bytes. The safety confirmation information transmitted from the disaster area information terminal 5 to the safety confirmation server 3 (FIG. 1) is an item represented by a prescribed data amount and contents to be stored.
[0030]
The “transmission time request” indicates how quickly related persons inside and outside the disaster area 4 want to know after the occurrence of the disaster. All information about the victims is important, but in particular, information on whether they are safe and whether they are injured generally seems to be of high importance. It indicates that the information is desired to be known at an earlier stage from item 8 to item 1.
[0031]
The basic section 11a has a small amount of data for indicating essential safety information (whether it is safe or injured or not) in the safety confirmation. It indicates that information can be communicated. Therefore, after a disaster occurs, by performing appropriate access restriction, redundant communication by voice is suppressed, and if safety information such as item 1 or item 2 is transmitted by data communication, a large amount of communication can be performed without causing communication congestion. Information on the safety of the victims.
[0032]
The information on the general safety of item 1 is information indicating whether or not it is safe at least, and has at least one bit, and is “1” when safe or “0” when safe or unknown. (However, “” indicates that it is a binary system). In FIG. 3, one byte (= 8 bits) is allocated, but it may be two bits or five bits. However, the contents indicated by the bit string need to be standardized and agreed between each information terminal and the center station 2 in advance. For example, when represented by 2 bits, "11" indicates that there is no injury and is safe, "10" indicates that the injury is minor and "01" indicates that the injury is serious, but "01" indicates that the injury is serious. The general safety information is coded so as to indicate that "00" is safe or unknown. The same applies to cases other than 2 bits.
[0033]
When the general safety information of item 1 can be transmitted as 1-byte data, even if all the bits in one byte are applied to the situation of whether or not they are safe, 8 bits are structured and a part thereof is converted to another information. You may make it assign. For example, three of the eight bits may be injured, one may be in a rescue request, one may have been hospitalized, one may have been treated, One bit may be assigned to whether or not a medicine is required, and one bit may be assigned to whether or not the person is evacuating outside the house.
[0034]
The standardization in the "contents to be stored" means that the above-mentioned code is previously determined between all the information terminals and the center station 2 (or the safety confirmation server 3), thereby reducing the amount of data. Can be planned. The standardized detailed safety information of item 2 is a further detailed version of the safety information in one byte structured as described above. As for the information of items 1 to 8, when a certain item can be transmitted, it is assumed that information of an item having a higher hierarchy than that item can also be transmitted. For example, when the free-format characters of item 8 can be transmitted, information of items 1 to 7 is also transmitted. At this time, it is assumed that the data format of items 1 to 7 is basically the same as the data format when each is sent alone. However, when only information of a relatively small amount of data can be transmitted, such as when the information of item 2 is in a transmittable state, the information of item 1 and item 2 are concatenated to form a new 3-byte format. Transmission can also be made possible, thereby improving the flexibility of expressing safety information. Also, when there is an item that does not correspond, such as the necessary material of item 7, it may be linked to the information of item 8. Whether or not such different items of information are linked is determined by a flag in a header that stores the safety information as a payload.
[0035]
The normalized coordinates of the evacuation site information of item 3 are not coordinates of latitude and longitude, but are approximate coordinate values using unique coordinate values based on a certain reference point. For example, in the case of notation using 4 bytes, x = 2 bytes and y = 2 bytes are used as mesh coordinates of 65536 × 65536. Instead of the coordinates, the code number of the evacuation center may be used.
Further, a flag may be provided for identifying an evacuation site or a hospital, and the code number of the hospital may be stored. Similarly, the evacuation site (latitude / longitude) information of item 4 is notation of a site indicated in units such as east longitude or north latitude, not in the unique coordinate system.
[0036]
The detailed safety (character) information of item 5 indicates the status of the safety by character, for example, “light sprain, no other life.” The time at which the safety information is input may be included in the safety information. Since this time is input by the user of the afflicted area information terminal 5 operating it, it is important information indicating that there is a high possibility that this user was safe at this time. As a method of expressing the time, when there is a margin in the data length, a character format such as “Dec 09 14:31:43 2001” may be used. If there is no margin in the data length, for example, a value normalized in units of 30 minutes may be represented by several bits. As a relative time from the time when the safety information is input to the time when the disaster area terminal 5 actually transmits the safety information, for example, "00" in binary notation is transmitted within 30 minutes from the input time. "01" indicates information transmitted within 1 hour, "10" indicates information transmitted within 1 hour and 30 minutes, and "11" indicates information transmitted 2 hours or more ago. This is the same when a bit number other than 2 bits is used. The unit of the relative time may be the above 30 minutes, 10 minutes, or 1 hour. Further, it may be logarithmically increased and decreased, such as 30 minutes, 1 hour, 2 hours, 4 hours, and the like.
[0037]
The information on the evacuation site name in item 6 is information that indicates the evacuation site not by a coordinate value but by non-coded characters such as “XX Village Community Center”. The information on the necessary materials in item 7 may be encoded with standard materials such as blankets, water, and food to reduce the amount of data. Those with low scores may be entered in free format.
The free format information of item 8 may be used in a free format message or the like, or, if the size permits, non-character binary data such as an image may be attached.
[0038]
The “data amount” may be defined in bit units instead of byte units. Further, the data amount of the safety confirmation information increases as the item 1, item 2, item 3,... Progresses, but the method of the increase does not necessarily have to be a power of 2 unit. It does not have to be monotonic. If the size of the safety confirmation information is from a few bits to several bytes, the safety confirmation information may be stored in the option area of the header instead of the payload data, which can shorten the message length. It is.
[0039]
Further, in the case of passing through a communication path in which the minimum possible message length is set, for example, even if only the safety information of item 1 can be transmitted, the minimum message length is exceeded. May be added as much as possible (except when the safety information of a plurality of persons is stored in one message). Similarly, the items to be stored may be determined in consideration of the size that can be stored in one message.
[0040]
In the access restriction operation specification 10 shown in FIG. 2, since data communication is performed at the time of access restriction at two access restriction levels of level 3 and level 2, the correspondence with the importance in the basic section 11a in FIG. Although not necessarily one-to-one, the number of access restriction levels may be increased to correspond to this importance one-to-one.
[0041]
Next, the expansion section 11b of the safety confirmation data hierarchy shown in FIG. 3 will be described.
[0042]
This is an item assuming a case where information is transmitted using audio, images, moving images, and the like when it does not apply to the standard safety information as in items 1 to 8. For example, a victim who cannot operate the disaster area information terminal 5 sufficiently (for example, a foreigner who uses a language other than the language used for displaying the operation guidance of the information terminal or a victim who cannot operate the information terminal sufficiently for physical reasons or the like) Etc.) is assumed to transmit safety information using a voice message. The format of the extended section 11b is also used for image data necessary for the rescue unit to plan procedures for determining rescue procedures, moving image data necessary for urgent treatment, and the like. Can be sent.
In this case, since the data length is long, it is practical to use in a polling mode in which a line is reserved and transmitted beforehand, or a center station 2 described later calls a disaster area information terminal 5.
[0043]
FIG. 4 is a block diagram showing a specific example of the center station 2 in FIG. 1, wherein reference numeral 20 denotes an antenna, 21 is a transmission / reception radio section, 22 is a reception data stream processing means, 23 is payload data output means, Is a general control information extracting unit, 25 is a disaster determining unit, 26 is a disaster information input unit, 27 is a console, 28 is a payload data input terminal, 29 is a data input / output unit with the safety confirmation server 3 (FIG. 1), Reference numeral 30 denotes a general control unit, 31 denotes a terminal location storage unit, 32 denotes a polling control unit, 33 denotes a transmission data stream processing unit, 34 denotes a transmission scheduler, 35 denotes an access restriction information injection unit, and 36 denotes a general control information injection unit.
[0044]
In FIG. 1, a reception data stream from an antenna 20 is demodulated and amplified by a radio unit 21 and then supplied to a reception data stream processing unit 22 to perform necessary data extraction and conversion. Since the center station 2 is in charge of a layer for controlling a communication line with the information terminal, the received data stream is generally not terminated at the center station 2 but transferred from the output means 23 to the external server or the like as load data. Here, the external server is the safety confirmation server 3, the disaster prevention measure headquarters 9, the voice terminal conversion device 8, the disaster outside information terminals 7a and 7b in FIG.
[0045]
The received data stream output from the received data stream processing unit 22 is also supplied to the general control information extracting unit 24 and the disaster determining unit 25. The general control information extracting means 24 extracts general control information other than the information related to the access restriction, and the disaster judging means 25 observes the call status and traffic volume from the disaster area information terminal in the received data stream. The value of the occurrence of a disaster is determined by using at least one of a value, an explicit voice report or a data report of the occurrence of a disaster from the terminal user to the center station 2, or external disaster information input from the input unit 26. The presence / absence is determined, and it is determined whether or not access restriction is required. Such disaster information input from the input means 26 used for determining the degree of congestion and the necessity of access restriction includes information indicating the presence or absence of a disaster from a meteorological observation institution such as an earthquake, flood, and tsunami, and specialized disaster information. The same information from the risk management organization may be added, and after the occurrence of a disaster, information from an organization that specializes in collecting information on the disaster situation, such as the disaster prevention headquarters 9 (FIG. 1), may be added. Further, inputs from various sensors such as an earthquake sensor may be directly taken in to make an independent determination.
[0046]
The console 27 is an operation device for managing the center station 2, and includes an output device such as a display device and a printer, and an input device such as a keyboard, a mouse, and voice recognition. The input means 28 is for inputting the payload data from the above-mentioned external server which supplies the payload data from the output means 23, and performs the mutual communication of the payload data with the external server together with the output means 23.
[0047]
Data output from the center station 2 is always scheduled, so that congestion does not occur even in the event of a disaster. Therefore, based on the payload data from the input means 28, the safety confirmation information, the meeting point, and other necessary information may be transmitted to the inside and outside of the communication congestion zone 4 (FIG. 1) such as the disaster area. Good.
[0048]
The general control means 30 is a processing unit such as a CPU for determining various operations of the information terminal, and may be constituted by a plurality of control means in order to distribute a load. The transmission data stream processing means 33 converts the payload data from the general control means 30 and the input means 28 into a stream. The transmission scheduler 34 schedules transmission of the transmission data stream from the transmission data stream processing unit 33.
[0049]
Therefore, the payload data input from the input unit 28 is processed by the transmission data stream processing unit 33 to become a transmission data stream, and is transmitted to the communication congestion zone 4 including the disaster area according to the schedule set by the transmission scheduler 34. However, at this time, access restriction information is injected into the transmission data stream by the access restriction information injecting means 35, and general control information other than the access restriction information is injected by the general control information injecting means 36. These injections superimpose these control information (that is, access restriction information and general control information) on the control information space of the header of the transmission data stream, but use the payload instead of using this transmission data stream. Thus, such control information may be transmitted alone. When such control information is stored in the payload, the control information is injected into the payload before the transmission data stream processing means 33.
[0050]
The transmission data stream into which the control information has been injected is modulated and amplified by the radio unit 21 to be a high-frequency signal, and transmitted from the antenna 20 to the satellite 1 (FIG. 1).
[0051]
The polling control means 32 controls the request for polling the safety confirmation information from the center station 2 to the disaster area information terminal 5 in the disaster area 4 (FIG. 1) where communication is congested. The local information terminal 5 is determined based on the information in the terminal location storage unit 31. As the information of the terminal location storage means 31, the location registration data of the information terminal can be used when the communication path is a terrestrial mobile phone network or a PHS network, and when the communication path is a satellite network, The determination is made by using the position information of the disaster area information terminal 5 immediately before the occurrence of the disaster, or by a method of explicitly transmitting the position update information from the disaster area information terminal 5 to the center station 2 at a certain time interval. You may. Alternatively, even when the disaster area information terminal 5 is an information terminal dedicated to confirming safety and the installation location such as a disaster prevention warehouse is known, the disaster area information terminal 5 can be subjected to polling. Further, as the polling target, request data from the safety confirmation server 3 (FIG. 1) input via the safety confirmation server input / output unit 29 may be used. This is to poll the information terminal when it is unknown that the information terminal is inside or outside the disaster area and the safety confirmation server 3 has made a safety confirmation request for the information terminal.
[0052]
Note that the antenna 20 and the radio unit 21 may be provided separately for the transmission system and the reception system.
[0053]
FIG. 5 is a block diagram showing a specific example of the information terminals 5, 7a and 7b in FIG. 1, wherein 40 is an antenna, 41 is a radio unit (transmission / reception), 42 is general control information extracting means, and 43 is received data. Stream processing means, 44 is access restriction information extracting / holding means, 45 is audio output means, 46 is display output means, 47 is operation means, 48 is non-audio data input / output means, 49 is dedicated operation means, and 50 is audio Input means, 51 is general control means, 52 is voice conversion means, 53 is delayable data holding means, 54 is real-time data processing means, 55 is transmission timing generation means, 56 is a switch, and 57 is general control information injection means. .
[0054]
In the figure, a sound output unit 45 outputs a sound, and a display output unit 46 outputs an image to a screen. The operation means 47 is a key, a dial, a pad, a stick, or the like. The input / output means 48 includes non-voice data, that is, image data from a camera or the like, optical data from an optical device including infrared rays, short-range wireless communication data, wired communication data, and other display data or information other than a screen such as an LED. Input / output data other than audio data such as vibration of the terminal.
[0055]
Here, the image data also includes data such as barcodes and characters. The short-range wireless communication includes a wireless LAN (IEEE 802.11b, a and its successor standard, compatible standard), Bluetooth (IEEE 802.15 and its successor standard, compatible standard), and UWB (Ultra Wideband). Even when the information terminal operates as a gateway and is used as a converter for a satellite line (or, generally, a wireless line), an appropriate layer such as an external terminal, a router, or a hub can be transmitted via the non-voice data input / output means 48. Connect to the network device. The communication distance may be extended by relaying the information terminal in the ad-hoc communication format. Note that all data handled by the non-voice data input / output means 48 need not involve input / output. For example, image data is input only, and infrared data can be both input and output.
[0056]
The antenna 40 converts an electromagnetic wave (that is, a transmission radio wave) in a space into an electric signal in a conductor. Here, the antenna 40 is used for both transmission and reception, but may be a separate antenna for transmission and reception. Further, the same communication medium need not be used for reception and transmission. For example, when the access restriction information is received and transmitted by the antenna 40, short-range wireless communication via the non-voice data input / output unit 48 may be used. The radio section (transmission / reception) 41 modulates / demodulates / amplifies high frequency (that is, transmission / reception data), but may be separate transmission / reception.
[0057]
The received data stream from the wireless unit 41 is supplied to a received data stream processing unit 43 to perform necessary data extraction and conversion processing, and is also supplied to an access restriction information extraction / holding unit 44 for access restriction. The information is extracted and further supplied to the general control information extracting means 42 to extract general control information other than the information on the access restriction. Further, general control information extraction and access restriction information extraction / holding may be performed by one means.
[0058]
The general control information injecting means 57 adds control information necessary for the operation of the information terminal to the transmission information, and the switch 56 operates to hold the delayable data at the timing generated by the transmission timing generating means 55. The transmission of the data delayed by the means 53 and the real-time data from the real-time data processing means 54 are turned on / off.
[0059]
Here, the delayable data holding means 53 holds and delays data other than the voice call for safety confirmation. Such data includes voice data in a storage format, such as a non-conversational voice message. The real-time data processing means 54 processes data required to have a small delay or no delay. Specifically, the data is in the form of a call using voice, but also includes data of remote control that requires real-time processing.
[0060]
The general control means 51 performs control for determining various operations of the information terminal, and is specifically composed of a processing unit such as a CPU. A plurality of same or different types of processing units may be configured from the viewpoint of load distribution and process suitability.
[0061]
The voice conversion unit 52 includes a function of converting a voice signal from the voice input unit 50 into a format suitable for subsequent processing, and a voice recognition function for operating an information terminal and inputting data.
[0062]
Here, an operation example of the information terminal having the configuration shown in FIG. 5 will be described for the disaster area information terminal 5 in a communication congestion zone such as a disaster area.
[0063]
First, the access restriction information from the satellite 1 (FIG. 1) received from the antenna 40 and processed by the radio unit 41 is extracted and stored by the access restriction information extracting / holding unit 44. The integrated control means 51 determines whether or not the terminal is currently subject to the access restriction based on the access restriction information held in the access restriction information extracting / holding means 44. Then, when a determination result indicating that the access restriction is applied is obtained, the current access restriction level is confirmed, and the audio output means 45 and the display output means 46 are set so that data corresponding to the current access restriction level is input. The user of the disaster area information terminal 5 is notified using the voice data input / output means 48. The notification may include the level of the access restriction in addition to the fact that it is under the access restriction.
[0064]
The user of the afflicted area information terminal 5 who knows that the access is under the restriction inputs the safety confirmation data corresponding to the access restriction level to the information terminal. Depending on the access restriction level, the type of information to be input and the data amount may be notified to the user by voice or by screen display. For inputting information, an appropriate one of the operation unit 47, the voice input unit 50, and the non-voice data input / output unit 48 is used. For example, when the access restriction level is strict and only the minimum data transmission is permitted, data indicating whether the user of the afflicted area information terminal 5 is currently safe (in an extreme case, whether the user is safe or not). Is input. If the access restriction level is relatively low and more data can be transmitted, data such as the current location and meeting place of the user of the disaster area information terminal 5, necessary materials, and voice messages are input. These data are stored in the delayable data holding unit 53 and transmitted from the antenna 40 via the switch 56 and the wireless unit 41 that are operated by the trigger of the transmission timing generated by the transmission timing generation unit 55.
[0065]
When there is no polling instruction (data request) from the center station 2 (FIG. 1), the transmission timing is determined in consideration of the access restriction level, the use state of the line, and the like. When there is a polling instruction from the center station 2, a transmission timing is generated when the own terminal 5 is polled. When the access restriction level is a level at which a conversational voice call can be made, data having high real-time properties is transmitted via a voice input unit 50 such as a microphone, a voice conversion unit 52, a real-time data processing unit 54, and a switch 56. Send as At this time, it is also assumed that processing with high real-time property can be performed for reception.
[0066]
When inputting the safety confirmation data, the access restriction may be relaxed and additional information may be input, or a large amount of data may be input in advance regardless of the strictness of the access restriction. For example, even when the level of the access restriction is at a level at which transmission of only information indicating whether or not the information is safe is possible, the presence or absence of an injury, the position of the user of the disaster area information terminal 5, the necessity of an emergency vehicle request, the meeting place Information having a large amount of data, such as necessary materials, voice messages, and images, is input to the afflicted area information terminal 5, and as the access restriction is relaxed, information that requires a larger amount of data that can be transmitted at that time is deleted. You may make it transmit automatically. Further, data having a small information amount may be automatically generated from information having a larger data amount. For example, if the user of the afflicted area information terminal 5 inputs the voice message, it is naturally determined that the user is safe (the user registered in the afflicted area information terminal 5 by the user). However, the input of the voice message makes it possible to omit the input of the safety confirmation data indicating whether or not it is safe.
[0067]
The access restriction information is not necessarily obtained only from the antenna 40, but may be obtained using the non-voice data input / output unit 48, for example, using a short-range wireless communication network such as a wireless LAN. The exclusive operation means 49 may be provided in the disaster area information terminal 5 so that a menu related to safety confirmation can be easily activated.
[0068]
In an information terminal dedicated to safety confirmation, a voice input unit for conversation is not essential. For example, it is only necessary to have only a function that can be transmitted as safety information by input from an operation means, input from a barcode, a small IC chip, or the like. Therefore, in this case, in the configuration shown in FIG. 5, the voice input unit 50, the voice conversion unit 52, and the real-time data processing unit 54 can be omitted.
[0069]
Further, the antenna 40 and the radio unit 41 may be provided separately for the transmission system and the reception system.
[0070]
FIG. 6 is a diagram showing a specific example of a device connected to the input / output means 48 shown in FIG. 5, wherein 60 is a position detecting means, 61 is an individual confirming means, 62 is vital data detecting means, and 63 is portable / non-mobile. Mobile confirmation sensor, 64 is a temperature sensor, 65 is an acceleration sensor, 66 is vehicle information acquisition means, 67 is an oxygen sensor, 68 is a strain sensor, 69 is an atmospheric pressure sensor, 70 is a water sensor, 71 is a toxic gas / toxic substance, 72 Denotes a radiation sensor, and the portions corresponding to those in FIG.
[0071]
In the figure, various detection means and sensors are connected to the non-voice data input / output means 48 of the information terminal 5. Hereinafter, each of them will be described.
[0072]
The position detecting means 60 detects the current position of the information terminal 5 by using a GPS (Global Positioning System) or various positioning methods. By using the current position of the information terminal 5, in addition to the state of safety, the position of the terminal user can be known not by words but by objective data such as coordinate values. If necessary, the current position information is input from the non-voice data input / output unit 48 in the information terminal 5 shown in FIG. 5 and stored in the delayable data holding unit 53 via the general control unit 51. Thereafter, the switch 56 is opened by a timing signal from the transmission timing generating means 55 in accordance with the situation of the access restriction, and the information terminal 5 transmits the signal. Not only the position data but also other data is transmitted from the information terminal 5 along the same route.
[0073]
The individual confirmation unit 61 is a unit that detects a user of the information terminal 5. This personal confirmation means 61 is used when the registrant and the user of the information terminal 5 do not always match. False safety confirmation information due to misidentification by identifying individuals using cards, IC chips (including disposable micro IC chips), barcodes, biometric authentication means (fingerprints, irises, and genetic information) that can identify individuals Can be prevented from being transmitted. When using a voiceprint for personal identification, the voiceprint may be input to the information terminal 5 from the voice input means 50 (FIG. 5). Similarly, when a personal ID number (which may be a set of an ID and a password) is used, the personal ID number may be input from the operation unit 47.
Further, when an operation is performed in place of another person who cannot be operated for some reason such as injuries, the efficiency of collecting safety confirmation information can be improved by intentionally registering the safety of the other person. In the case of registering the safety information of another person, by using an authentication means such as a password, it is possible to prevent spoofing and to improve the accuracy of the safety information.
[0074]
The vital data detection unit 62 is a unit that acquires biological information such as the body temperature, blood pressure, and pulse of the user of the information terminal 5. The vital data acquires data relating to the physical condition of the terminal user and uses the data as part of the safety information.
[0075]
The temperature sensor 64 detects whether the temperature around the information terminal 5 is a temperature suitable for the terminal user to survive.
[0076]
The acceleration sensor 65 detects whether the user of the information terminal 5 has encountered a fall accident or the like by detecting a fall or a slip from a high place or an impact due to a collision of a high-speed moving object (a fallen object / a car, etc.). Is to be detected.
[0077]
When the information terminal 5 is of an on-vehicle type, the vehicle information obtaining means 66 obtains data relating to the survival of the terminal user, such as a running condition and an airbag operating condition obtained from the vehicle.
[0078]
The oxygen sensor 67 detects the concentration of oxygen around the user of the information terminal 5, and the strain sensor 68 measures the weight applied to the user of the information terminal to detect whether or not the terminal is alive. The pressure sensor 69 detects the pressure (and water pressure) of the terminal user, and the water sensor 70 detects the presence or absence of submergence. The toxic gas / toxic substance sensor 71 detects whether or not the terminal user has been exposed to poisons or gases, and the radiation sensor 72 detects the amount of radiation around the terminal user. is there.
[0079]
The portable / non-portable confirmation sensor 63 confirms whether or not the information terminal 5 is actually carried by the user at the time of acquiring data from the various sensors and correct data of the terminal user is acquired. Is a sensor for performing the following. By using the portable / non-portable confirmation sensor 63, for example, whether the information terminal 5 has been subjected to a drop impact (in the case of the acceleration sensor 65) or whether the terminal user has It is possible to distinguish whether or not an impact has occurred, and therefore, it is possible to enhance the association between the data of the acceleration sensor 65 and the safety state of the terminal user. Similarly, the information of sensors other than the acceleration sensor 65 can be combined with the information from the portable / non-portable confirmation sensor 63 to enhance the relevance with the safety status of the terminal user.
[0080]
The data from these means 60 to 72 is automatically responded by the information terminal 5 to the polling of the safety information from the center station 2 under a physical / physical condition in which the terminal user cannot operate the information terminal 5. You may use it when you do. In addition, not only the currently acquired data but also the history of previously acquired data may be used to determine whether or not the state is suitable for human survival. Further, these units 60 to 72 may be built in the information terminal 5.
[0081]
FIG. 7 is a flowchart showing a specific example of the operation of the disaster area information terminal 5 when access is restricted.
[0082]
In FIG. 7, first, access restriction information is received (step 200), and analysis of the access restriction information and determination of required safety information are performed (step 201). The determination of the safety information is performed, for example, in a state where the access restriction level is large and strict, and it is possible to transmit only safety information of a small data amount that is safe or not, or whether the access restriction level is loose and safe. In addition to the above information, it is determined whether or not a necessary material, a meeting place, and other additional information can be transmitted.
[0083]
Next, it is determined whether or not it is necessary to input safety information (step 202). If the safety information required at the current access restriction level has not been input to the disaster area information terminal 5, the user is prompted to input the safety information (step 203). The safety information may be input manually or may be input automatically using various sensors. In the case of automatic input, consideration is given to preventing the occurrence of false alarms by combining information of a plurality of appropriate sensors shown in FIG. In addition, it is not necessary to input only information required at the current access restriction level, and detailed information may be input at a time in case the access restriction level is relaxed in the future. .
[0084]
Next, it is determined whether it is time to transmit the safety information (step 204). At this time, if transmission is possible, it is determined whether there is information added from the previous transmission of the safety information (step 205). Here, the case of transmission is the case of transmission for the first time after the start of access restriction due to the occurrence of a disaster, or the case where the level of access restriction is relaxed from the previous transmission and there is safety information to be added. If this is the case, safety information is transmitted (step 206).
[0085]
Next, after receiving the access restriction information (step 207), it is monitored whether or not the access restriction is updated (step 208). If the access restriction has been updated, it is determined whether or not this update has ended the access restriction (step 209). When the access restriction ends, the operation mode of the disaster area information terminal 5 itself at the time of the access restriction ends. If the access restriction is not completed, the flow returns to the access restriction information analysis processing in step 201 again.
[0086]
FIG. 8 is a flowchart showing a specific example of the operation of the center station 2 when the access is restricted.
[0087]
In the figure, by inputting external information from the input means 26 (FIG. 4), information on a disaster that may cause communication congestion is input (step 300). Examples of such disaster information include information from sensors for detecting occurrence of disasters such as earthquake sensors, tide level sensors, wind speed sensors, and rainfall sensors, disaster occurrence information issued from the disaster response headquarters 9 (FIG. 1), and information from various news organizations. and so on. In addition, if there is a situation other than a large-scale natural disaster that requires safety confirmation, such as a shogi defeat or a large-scale fire at the event site, the information is input as external information in the same manner, and the safety is confirmed by the safety confirmation server 3 (FIG. 1). Prompts the start of the confirmation operation. Therefore, the use of the safety confirmation system does not necessarily have to involve the occurrence of congestion in the communication system. In this case, the access restriction level is always loose.
[0088]
Next, it is determined whether or not the safety confirmation operation needs to be started by detecting the occurrence of a disaster based on the internal information (step 302). Specifically, the occurrence of a disaster is detected by monitoring the congestion state of the communication path managed by the center station 2. The internal information includes an explicit notification of occurrence of a disaster in addition to indirect measurement values such as congestion information. Further, communication in an emergency mode using a special number or address may be detected. For this purpose, an operation means dedicated to safety confirmation may be provided in the terminal.
[0089]
Note that the order of the external information input (step 301) and the internal information input (step 302) may be reversed.
[0090]
Next, the disaster area, scale, and congestion scale are predicted (step 303). The disaster area here means an area where it is necessary to confirm safety. The congestion scale is predicted by predicting the number of information terminals capable of transmitting safety information based on the area and population density of the damaged area, the diffusion rate of information terminals, the time zone, and the type of disaster. For example, even if the area of the disaster area with a seismic intensity of 6 is large, if the population density and the terminal penetration rate are low and it is midnight, communication for confirming safety from inside and outside of the disaster area will be more difficult than under the reverse condition. Is also expected to be relatively small. In the event of a flood caused by heavy rain, it is expected that communication for confirming the safety will occur in a dispersed manner, and in the case of a large earthquake, it will occur in a concentrated manner. In addition, it can be expected that the safety confirmation communication will rapidly increase outside the affected area immediately after the first report of the disaster is reported. Based on the prediction, the safety confirmation server 3 may be linked with the safety confirmation server 3 as necessary to set up a safety confirmation bulletin board or the like on the Internet or to determine a region to be posted on the bulletin board.
[0091]
Next, an access restriction level and time are determined based on the above prediction (step 304). If it is determined that access restriction is necessary (step 305), the access restriction information is sent to each information terminal (step 306).
[0092]
Next, a specific example of the display screen of the information terminal 5 will be described.
[0093]
FIG. 9 is a diagram showing a specific example of a display screen of the information terminal 5 when no disaster has occurred, wherein 80 is a screen when no disaster occurs, 81 is a terrestrial communication network status indicator, and 82 is satellite communication. A network status indicator, 83 is a position acquisition status indicator, 84 is a used communication network display unit, 85 is a disaster presence display unit, 86 is a map display unit, and 87 is a current position information display unit.
[0094]
In the figure, at the current position of the information terminal 5, no disaster requiring the safety confirmation has occurred, and a disaster non-occurrence screen 80 indicating this has been displayed. The determination of the position of the information terminal 5 may use the data of the position detection function of the information terminal 5 itself (that is, the position detection means 60 in FIG. 6), or the registration of the terminal managed by the center station 2. The position may be based.
[0095]
The terrestrial communication network status indicator 81 on the disaster non-occurrence screen 80 indicates whether the terrestrial communication network can be used, and the satellite communication network status indicator 82 indicates whether the satellite communication network can be used. The information terminal 5 is an example of a hybrid configuration of a terrestrial system and a satellite system, but may be an information terminal using only one of them. However, at least from the viewpoint of disaster resistance, the use of an information terminal that can use a satellite-based communication network is more robust in terms of ground facilities and controllability during congestion.
[0096]
The position acquisition state indicator 83 displays information on whether the current position can be acquired. Acquisition of the current position is not essential, but if the current position information of the information terminal 5 is used, advantageous development can be achieved in various aspects such as control in a limited area and distribution of disaster information.
[0097]
Here, the used communication network display section 84 indicates that the current mode is the mode using satellite communication. This display 84 is not essential, and may be merely an indication of whether or not a communication path can be secured. Also, in the case of a hybrid terminal of a terrestrial system and a satellite system, an automatic switching method may be used, and the availability of the communication path as a result of the automatic selection may be indicated as a representative.
[0098]
In the disaster presence display section 85, information indicating the presence or absence of a disaster, in this case, information indicating that no disaster has occurred, is displayed in the form of, for example, a message. This disaster presence display 85 is not essential, and a standby screen or other information may be displayed. Conversely, if the information terminal is a terminal dedicated to confirming safety, the presence or absence of a disaster may be always displayed explicitly.
[0099]
The map display unit 86 displays the current position of the information terminal 5 on a map. The map display unit 86 is not essential, and information other than the map may be displayed. When the information terminal 5 is a vehicle-mounted terminal, a map for navigation may be displayed.
[0100]
In the current position information display section 87, the current position information of the information terminal 5 is displayed in characters to confirm whether the current position has been correctly acquired, to transmit the position by voice call, and to confirm the position on the bookbinding map. Available to The display unit 87 is not essential.
[0101]
FIG. 10 is a view showing a specific example of a safety information input request screen of the disaster area information terminal 5 when a disaster occurs, 90 is this safety information input request screen, 91 is a disaster information display section, and 92 is safety. This is a confirmation information input menu display section, and the portions corresponding to FIG. 9 are denoted by the same reference numerals, and redundant description will be omitted.
[0102]
In this figure, a safety information input request screen 90 uses a terrestrial communication network state indicator 81, a satellite communication network state indicator 82, and a position acquisition state indicator 83 similar to the disaster non-occurrence screen 80 shown in FIG. A communication network display section 84 and a disaster display section 85 are provided, and the indicators 81 to 83 and the display on the display section 84 are the same as the screen 80 when no disaster occurs. Information indicating that a disaster has occurred is displayed, for example, in the form of a message.
At this time, for example, the blinking dots 85a are arranged and displayed around the disaster presence / absence display section 85, and the disaster presence / absence display section 85 is displayed in a prominent form as compared with the display when no disaster occurs. Is also good. Further, the occurrence of a disaster may be notified to the terminal user by alarm sound, vibration, voice (including synthetic voice), or the like.
[0103]
In the disaster information display section 91, a map representing the disaster area 91b is displayed. On the map, the disaster site is indicated by a cross, and the current position of the disaster area information terminal 5 is indicated by an arrow 91a. Further, for example, a description of the disaster site or the like is displayed in the form of a balloon 91c from the disaster site indicated by a cross. Although the map and the characters are used here, information may be transmitted by voice or a Braille output device. Alternatively, only the presence or absence of a disaster may be displayed.
[0104]
The safety confirmation information input menu display section 92 displays a menu 93 of safety confirmation information to be transmitted when a disaster such as “safe” or “slightly injured” occurs. Note that the selectable menu may be automatically restricted so that only the currently transmittable safety confirmation information can be selected according to the access restriction level at this time. The automatic restriction of the menu of the safety confirmation information can prevent the terminal user of the disaster area information terminal 5 from erroneously recognizing the information transmitted to the safety confirmation server 3 (FIG. 1). (E.g., to prevent the terminal user from misunderstanding that the information is transmitted to the confirmation server 3). Conversely, a method may be used in which a large amount of safety confirmation information is input at a time, and detailed information is automatically transmitted as the access restriction level is relaxed. In this case, the trouble of inputting the safety confirmation information can be saved, and the convenience of the terminal user can be improved.
[0105]
FIG. 11 is a diagram showing a specific example of a safety information transmission wait screen on the disaster area information terminal 5, where 95 is a safety information transmission wait screen, 96 is a safety information transmission status display section, and 97 is transmission time prediction information display. Reference numeral 98 denotes a satellite-based communication network traffic information unit, and the parts corresponding to those in FIG.
[0106]
In this figure, on the safety information transmission waiting screen 95, a desired safety confirmation information menu 93 is selected and selected in the safety confirmation information input menu display section 92 of the safety information input request screen 90 shown in FIG. This is a screen displayed when the safety confirmation information has not been transmitted yet and is in a transmission standby state. Similar to the safety information input request screen 90 shown in FIG. 10, a terrestrial communication network state indicator 81 and a satellite communication network state indicator 82, a position acquisition status indicator 83, a communication network display 84, a disaster information display 91, a safety confirmation information input menu display 92, a safety information transmission status display 96, and a transmission time prediction information display. 97 and a satellite communication network traffic information section 98 are displayed.
[0107]
The safety information transmission status display section 96 indicates a status in which the safety confirmation information of the menu 93 selected on the safety information input request screen 90 has not yet been transmitted to the safety confirmation server 3 via the center station 2, that is, a transmission standby state. , For example, a message.
[0108]
The transmission time prediction information display section 97 displays an estimated time until the input safety confirmation information can be transmitted in consideration of the current congestion state of the satellite 1 (FIG. 1) and the access restriction schedule. Even if the estimated time is predicted by the disaster area information terminal 5, the center station 2 (or the management program in the safety confirmation server 3 via the center station 2) is in the outbound direction (from the center station 2 to the disaster area information terminal 5). Broadcasting or multicasting may be performed using a line directed in the direction. In particular, when the safety information is sequentially collected from each affected area information terminal 5 by polling, the latter method can provide more accurate prediction. The estimation of the transmission possible time can be based on automatic or manual transition to the mode for suppressing power consumption until transmission becomes possible, particularly when the remaining battery level of the disaster area information terminal 5 is limited. It is. In addition, the terminal user of the disaster area information terminal 5 only needs to move to a place where satellite communication is possible only before and after the time when transmission is possible, so that there is an advantage that the degree of freedom of action increases.
[0109]
The satellite-based communication network traffic information display section 98 displays satellite-based communication network traffic information for informing the terminal user of the affected area information terminal 5 of the current congestion status of the satellite line. By grasping the congestion status of the satellite line in this way, the terminal user can know the cause of the fact that the normal telephone call (or communication) cannot be performed at present, and can expect the effect of reducing the dissatisfaction of the terminal user.
[0110]
Here, in the safety confirmation information input menu display section 92, the selected and transmittable safety information is indicated by a black frame 93.
[0111]
FIG. 12 is a diagram showing a specific example of the safety information transmitted screen on the disaster area information terminal 5, where 100 is the safety information transmitted screen, 101 is the safety information registration result / additional information display unit, Parts corresponding to those in FIG. 11 are denoted by the same reference numerals, and redundant description is omitted.
[0112]
In this figure, the safety information transmitted screen 100 is displayed when all the menus 93 indicated by black frames 99 have been transmitted on the safety confirmation information input menu display section 92 of the safety information transmission wait screen 95 shown in FIG. This is a screen, similar to the safety information transmission wait screen 95 shown in FIG. 11, a terrestrial communication network status indicator 81, a satellite communication network status indicator 82, a position acquisition status indicator 83, a used communication network display section 84, and input of safety confirmation information. A menu display section 92 and a safety information transmission status display section 96 are displayed, and a registration result / additional information display section 101 of safety information is displayed.
[0113]
In the safety information transmission status display section 96, information indicating that transmission of the selected safety information has been completed is displayed, for example, in the form of a message.
[0114]
The safety information registration result / additional information display unit 101 displays the content of the safety information transmitted and registered in the safety confirmation server 3 (FIG. 1) and other additional information. Although the additional information can be omitted, access means to the bulletin board of the safety confirmation server 3 may be displayed. In addition, the estimated time of relaxation of the access restriction is also displayed as the additional information, but this may not be the same for all the affected area information terminals 5 in the affected area. For example, based on the local or calling number of the information terminal 5 or the unique address, the area A is relaxed from 23:00, and the area B is relaxed from 23:30, thereby reducing congestion when relaxing access restrictions. it can. Further, even within the same area where access restrictions are relaxed at the same time, the safety information may be transmitted for each information terminal 5 after a random back-off time. The random back-off is effective even when the access restriction is not distributed for each region.
[0115]
In the safety confirmation information input menu display section 92, a menu 93 of safety information transmitted and registered in the safety confirmation server 3 is displayed by a hatched frame 99a. Specifying the registered safety information in this way is convenient when changing the registered contents.
[0116]
FIG. 13 is a view showing a specific example of a related person safety screen on the disaster area information terminal 5, where 110 is the related person safety screen, 111 is a mode display unit, 112 is a related person current position display unit, and 113 is A related person safety information display portion, 114 is a related facility information display portion, 115 is a family relationship selection menu display portion, and 116 is a company relationship selection menu display portion, and portions corresponding to FIG. Description is omitted.
[0117]
In this figure, the related person safety screen 110 includes a terrestrial communication network status indicator 81, a satellite communication network status indicator 82, and a position acquisition status indicator 83, similar to the disaster non-occurrence screen 80 shown in FIG. A communication network display section 84 is displayed, and a mode display section 111, a related person current position display section 112, a related person safety information display section 113, a related facility information display section 114, a family relation selection menu display section 115, and a company relation The selection menu display section 116 is displayed.
[0118]
In the figure, the related person safety screen 110 utilizes safety information broadcast or multicast by the safety confirmation server 3 (FIG. 1) via the center station 2 (FIG. 1). This utilizes the fact that a relatively large amount of data (ie, safety information) is easy to flow because the communication in the outbound direction is under the control of the center station 2 and congestion is unlikely to occur even during a disaster. ing.
[0119]
Here, the mode display unit 111 displays that the mode is one in which the safety information of both parties involved in the disaster area information terminal 5 is currently displayed.
[0120]
In the related person current position display unit 112, for example, the related person's current position (star mark 112a) and the terminal user's facility such as home (circle mark 112b) are displayed with a map of the affected area. In addition, the current position of the terminal user of the afflicted area information terminal 5 is also indicated by an arrow 112c. Of course, such position information is displayed when it can be obtained, and when it cannot be obtained, it does not always need to be displayed.
[0121]
The related person safety information display unit 113 displays the status of the related persons at both terminals. For example, for a related person whose position information has been obtained, the related person present position display unit 112 displays the status. From the position of the person concerned, the name of the person concerned and its safety information are displayed in the form of a balloon. Further, in the related facility information display section 114, the name and status of the facility related to the terminal user such as the home are displayed in the form of a balloon from the position b of the child facility displayed on the related person current position display section 112. .
[0122]
In the family relationship selection menu display section 115, a menu for selecting the family relationship of the user of the disaster area information terminal 5 is displayed. Any group that wants to know the safety information other than the family and relatives may be registered. For real estate, homes, related lands, properties to be managed, and the like may be registered. In the company relation selection menu display section 116, a selection menu of company relations (employees, company facilities, business relations, etc.) is displayed. It may be possible to register real estate such as employees and company equipment, and companies related to business. In a company relationship, in addition to the safety information, additional information such as the degree of impact on business may be made manageable. It is not necessary for each family member to make input settings for family members and related persons. For example, at least one of the family members may set the information, and for the remaining family members, information on the member configuration may be automatically synchronized based on the information of the already set members. In this case, the configuration of the other party registered as a family member may also be automatically set as a family member category. It should be noted that information synchronization may be performed during normal times when traffic is not tight (when no disaster has occurred) when it is not urgent.
[0123]
FIG. 14 is a diagram showing a specific example of a polling screen on the afflicted area information terminal 5, wherein 120 is this polling screen, 121 is a polling schedule display section, 122 is a polling related information display section, and corresponds to FIG. The same reference numerals are given to the same parts, and duplicate description will be omitted.
[0124]
13, the polling screen 120 includes a terrestrial communication network status indicator 81, a satellite communication network status indicator 82, a position acquisition status indicator 83, and a display of the used communication network, similarly to the related party safety screen 110 shown in FIG. The section 84 and the mode display section 111 are displayed, and the polling schedule display section 121 and the polling relation information display section 122 are displayed.
[0125]
In the mode display unit 111, the fact that the polling mode is set is displayed by, for example, a message.
[0126]
The polling schedule display section 121 shows, for example, a list of schedules and when the afflicted area information terminal 5 is to be polled (call for safety information transmission). , Surrounded by a frame.
[0127]
The polling-related information display section 122 displays an action, an instruction, and the like within a marginal time before receiving a polling with respect to the polling schedule indicated by the polling schedule display section 121. The display indicates whether to sound an alarm so that the user can move to a place where communication is possible at the time of polling and advice for preventing exhaustion. The scheduled time of the next and subsequent polls may be displayed in case transmission failed during polling.
[0128]
In addition, the polling order may be scheduled for each region such as the municipalities where the information terminal is located, as shown in FIG. 15A, in addition to the serial number such as the station number of the disaster area information terminal 5, or as shown in FIG. As shown in (b), the location where the information terminal is located may be based on an area divided on a map. In the example shown in FIG. 15B, the map 121a is divided into regions for each station number, and the polling schedule 121b is displayed as additional information in a balloon format for each region. The division based on the geographical position may be determined based on the position of the beam when a multi-beam satellite is used for the communication link. When a terrestrial communication network is used for the communication link, the communication range of the base station may be used as a basis. At this time, scheduling may be performed so that communication traffic is dispersed in the base station. This does not prevent a plurality of base stations from performing polling simultaneously.
[0129]
By the way, the safety information input elegance surface 90 shown in FIG. 10 is for inputting the safety information of one person, but it is also possible to transmit the safety information of a plurality of people. A safety confirmation information terminal installed in a disaster prevention warehouse or the like is assumed. In disaster-prevention warehouses, etc., it is possible to conduct a smooth safety check by keeping a terminal for collectively transmitting the safety information of multiple residents living in the area and those who were accidentally present at the time of the disaster. it can. In addition to the disaster prevention warehouse, a safety confirmation information terminal may be provided at a place where people easily accumulate, such as a school, a public hall, and a community center. The battery may be replaced regularly for the sake of reserve, or a battery that has a low self-discharge and can be stored for a long period of time may be used. May be provided. Further, the personal information terminal may be provided with a function of transmitting a plurality of safety information.
[0130]
Checking the safety information in the local community has the advantage that the person who cannot transmit the safety information can check the safety information. This is because the local residents who are acquainted can mutually identify themselves. Further, it is possible to perform more effective safety confirmation work, such as performing a search for safety confirmation in cooperation with the necessity.
[0131]
It is also effective to have a list function of the victims who have evacuated to the evacuation center, since the data can be centralized. The victim list function can be transferred to the safety confirmation server 3 together with the safety information of the victims, and can be used for various managements such as necessary supplies and supplies at the evacuation center, records of health conditions, and relocation destinations. Large range.
[0132]
FIG. 16 is a view showing a specific example of a safety information input request screen for enabling transmission of safety information of a plurality of persons, 130 is this safety information input request screen, 131 is a plural safety information address hierarchy display section, 132 Is a plurality of safety information personal name hierarchy display section, 133 is a guide display section, 134 is a map display button for confirmation, 135 is a map for confirmation, 136 is a legend of the safety confirmation status, and the same as the corresponding parts in the above drawings. Reference numerals are given and duplicate description is omitted.
[0133]
In this figure, on the safety information input request screen 130, a terrestrial communication network status indicator 81, a satellite communication network status indicator 82, a position acquisition status indicator 83, a used communication network display unit 84, and a safety information input menu display are described. The section 92 and the mode display section 111 are displayed, and the multiple safety information address hierarchy display section 131, the multiple safety information personal name hierarchy display section 132, the guide display section 133, and the confirmation map display button 134 are displayed.
[0134]
The mode display unit 111 displays that the disaster area information terminal 5 is a multiple safety information mode in which a plurality of pieces of safety information are input collectively, and in order to prevent erroneous recognition as a mode in which individual safety information is input, The display is performed.
[0135]
In the multiple safety information address hierarchy display section 131, for example, an address such as "◎ city ▲ town □ address" is displayed, but an address hierarchy may be used. Here, the display is made up to the address hierarchy of the higher hierarchy, but a household hierarchy may be provided below the address hierarchy.
Similarly, a hierarchy of addresses in a wide area may be provided to improve the convenience of address selection. Alternatively, an area where evacuation is assumed to be stored in a disaster-prevention warehouse or a public hall stored in advance may be set, and the area may be easily called.
[0136]
In the multiple safety information personal name hierarchy display section 132, the lowest information (personal name) when the multiple safety information is input is displayed. Here, when a plurality of such information are displayed, the information selected by an underline (underline) is indicated. Here, it is assumed that the personal name at the top is currently selected, and this selected name is selected. The safety information relating to the person is selected to be transmittable in the safety information input menu display section 92. The selected safety information is displayed in a bold frame 99. Here, it is assumed that the safety information “safe” has been selected.
[0137]
The guide display unit 133 displays a guide when a plurality of safety information is input.
In order to prevent erroneous operations, various types of confirmation information are displayed. Particularly in evacuation centers, it is desirable to comprehensively check the safety information of the victims in the corresponding evacuation area. Accordingly, the confirmation map display button 134 is provided, and by selecting this, the confirmation map 135 is displayed, and the safety status of a plurality of persons is displayed. At this time, a legend 136 of the safety confirmation status shown on the confirmation map 135 is also displayed. This makes it clear whether the entire family has been confirmed, or has been partially confirmed, has not been confirmed, has been evacuated to another evacuation center, or has been absent at the time of the disaster. As a result, it is possible to prevent omission of safety confirmation and to provide basic data for searching for missing persons.
[0138]
In the confirmation map 135, even in the case of an apartment house, by providing a menu that is displayed hierarchically from the house, omission of confirmation can be prevented. In addition, the information on which the safety has been confirmed may be updated at any time when the information of the victim who has evacuated to another evacuation site is entered. Further, information of a person who has migrated to the outside of the affected area (information on whether or not the person has migrated, an address of a migration destination, and a communication means) may be displayed as time elapses after the disaster. In the case of a store, business resumption information may be stored.
[0139]
FIG. 17 is a diagram showing a specific example of the data format of the safety information.
[0140]
FIG. 17A shows a data format of safety information for each individual, which is composed of an individual safety information header 140 and individual safety information body data 141. In the individual safety information header 140, at least an identification flag indicating that the following information is the individual safety information main body data 141, an ID (Identification) for identifying an individual, and the individual safety information main body data 141 according to the access restriction. Information that defines the format and length is included (if the access restriction information is strictly observed, the information that defines the format and length of the individual safety information body data 141 may be omitted). . The individual safety information body data 141 is information of a longer data amount such as an evacuation site or a message message, from information that can be reduced to several bits indicating whether or not it is safe according to the level of access restriction.
[0141]
FIG. 17B shows a data format of safety information for a plurality of persons, which is composed of a plurality of safety information headers 142 and a unit 143 of individual safety information in the plurality of safety information. It comprises an individual safety information header 144 and individual safety information body data 145 in a plurality of safety information data.
[0142]
It is assumed that the safety information for a plurality of persons includes at least an identification flag indicating that the following data is the plurality of safety information. When the header which is the last part of the plural safety information is not used, the number of the safety information stored in the plural safety information header 142 may be included, or the individual safety information main body data 145 according to the access restriction may be included. May be included.
[0143]
The individual safety information unit 143 is a unit of the individual safety information in the multiple safety information, and is present for the number of stored safety information. The individual safety information header 144 is a header of individual safety information in the multiple safety information, and stores at least an ID that can identify an individual. When the level of detail of the safety information is different for each individual safety information, information on the format and length of the individual safety information body data 145 according to the access restriction may be included. This is to cope with a situation in which data is not updated to more detailed safety information for all the stored individual safety information units 143 when the access restriction is relaxed. In this case, information on the format and length of the individual safety information body data 145 according to the access restriction may be removed from the multiple safety information header 142. Conversely, the information on the format and length of the individual safety information body data 145 is not removed from the multiple safety information header 142, but is used as a default value of the data format of the individual safety information, and the individual safety information body having a data format that does not match the default. The same data (information on the format and length of the safety information body data according to the access restriction) may be stored only in the individual safety information header of the data 145.
[0144]
The individual safety information body data 145 in the multiple safety information basically holds the same contents as the individual safety information body data 141 shown in FIG. When a plurality of safety information has a predetermined group member such as a local resident or a family, the plurality of safety information headers 142 include a region ID or a family ID, and the individual safety information header 144 includes a simplified ID. Thus, the amount of information may be reduced.
[0145]
Further, in the example shown in FIG. 17 (b), the aggregation of the plurality of safety information remains at one level, but the safety information for each household is further stored in the plurality of safety information for each district. Structuring over a plurality of layers may be performed.
[0146]
FIG. 18 is a diagram illustrating a specific example of a transmitted screen of the multiple safety information displayed on the disaster area information terminal 5 after the transmission of the multiple safety information input on the safety information input request screen 130 of FIG. 16. , 140 is a transmitted screen of the plurality of safety information, 141 is a label display, 142 is a posted data final confirmation time display, 143 is an individual safety information display, and 144 is a safety information additional data display. Are denoted by the same reference numerals, and redundant description will be omitted.
[0147]
In this figure, on the transmitted screen 140, the terrestrial communication network status indicator 81, the satellite communication network status indicator 82, the position acquisition status indicator 83, the used communication network display unit 84, and the mode display unit 111 are already displayed. At the same time, a label display section 141, a posted data final confirmation time display section 142, an individual safety information display section 143, and a safety information additional data display section 144 are displayed.
[0148]
The label display section 141 displays a label of a group name to which a plurality of pieces of safety information belong. This label is, for example, a district name or a household name. When confirming the plurality of pieces of safety information, the way of grouping does not necessarily have to match the way of grouping when transmitting safety information.
[0149]
The posted data final confirmation time display section 142 displays the last update time of the posted data. The last update time is the total safety information, or data within a certain limited scope (range) such as a region or a displayed range, indicating the time of the last updated safety information related information. It is intended to improve the convenience of the terminal user. For example, if the last update time has not changed since the previous confirmation within the scope of the XX town safety information, the terminal user performs the safety information confirmation operation assuming that there is no new safety information added or updated. You don't have to. The individual safety information display section 143 displays safety information for each of a plurality of persons. In this case, an individual name or an ID may be displayed to identify an individual. If personal information is not desired to be disclosed, an ID number disclosed only to a specific partner may be used. In the safety information additional data display section 144, additional information of the safety information is displayed. This is additional information such as cautions in reading the displayed safety information.
[0150]
FIG. 19 is a view showing a specific example of a safety confirmation screen displayed on the safety confirmation terminals 7a and 7b outside the disaster area in FIG. 1, wherein 150 is this safety confirmation screen, 151 is a region selection menu display section, and 152 is Denotes an individual safety information display section, and portions corresponding to the above-mentioned drawings are denoted by the same reference numerals, and redundant description will be omitted.
[0151]
In this figure, on the safety confirmation screen 150, the terrestrial communication network status indicator 81, the satellite communication network status indicator 82, the position acquisition status indicator 83, the used communication network display unit 84, and the mode display unit 111, which have already been described, are displayed. At the same time, an area selection menu display section 151 and an individual safety information display section 152 are displayed.
[0152]
The safety confirmation screen 150 is a function that utilizes the property of being resistant to communication congestion even in the event of a disaster when the outbound direction of the satellite line is centrally controlled by the base station. By using the outbound direction line and broadcasting or multicasting the latest safety information to information terminals inside and outside the disaster area 4 (including information terminals other than the information terminal dedicated to safety confirmation) at any time, in the disaster area 4 where communication is tight Also, it is possible to receive the safety information of the neighboring stricken area, and the convenience for the stricken person itself is also improved.
[0153]
The mode display unit 111 displays that the safety confirmation screen 150 is a screen for confirming safety information on the disaster area 4. The area selection menu display section 151 displays an area selection menu for selecting a disaster area to be checked for safety. When a desired area is selected on the area selection menu display section 151, an individual safety information display section 152 showing individual safety information of each individual in the selected area is displayed. In the display unit 151, appropriate items such as an area, an apartment, a household, and the like may be hierarchized, and these may be selectively displayed so that a desired item can be selected.
[0154]
FIG. 20 is a diagram showing an operation of confirming safety at the disaster site in this embodiment, where 160 is a non-collapsed house (including partially collapsed), 161 is a collapsed house, 162 is a road, 163 is a safety information signboard, and 164 is A house as a safety confirmation target, 165 is a terminal user, 166 is an information terminal, and 167 is a positioning satellite, and the portions corresponding to those in FIG.
[0155]
In this figure, it is assumed that the safety confirmation server 3 has already stored the safety information of the disaster area 4. The damaged area 4 includes a collapsed house 161 and a non-collapsed house 160, and the position of the road 162 is often unknown. Conventionally, in order to confirm the safety of the residents at the disaster site, the user relies on a safety information signboard 163 or the like. Therefore, there has been a problem with the freshness of the information, such as the inability to follow the update of the safety information. Furthermore, the sign itself may be removed during rescue work or debris removal work, and there is room for improvement in the reliability of information transmission. Also, anyone could know the information, so security could not be applied. On the other hand, responding to the safety confirmation at the site is primitive but important as a function of the safety confirmation system.
[0156]
Therefore, in this embodiment, the terminal user 165 carries the information terminal 166 and goes to the disaster area 4, checks the position using the positioning signal E from the positioning satellite 167, and checks the position corresponding to the safety confirmation. (That is, the safety of the residents who lived in the house 164). For this positioning, means other than a satellite may be used, and communication of safety information may not necessarily use the satellite 1 if other communication means can be obtained.
[0157]
FIG. 21 is a diagram showing a specific example of the safety information screen 170 displayed on the information terminal 166 in this case, where 171 is a guidance display section, 172 is a safety information display section, 173 is an additional information display section, The same reference numerals are given to portions corresponding to the above-described drawings, and duplicate description will be omitted.
[0158]
In this figure, the safety information screen 170 includes a terrestrial communication network status indicator 81, a satellite communication network status indicator 82, a position acquisition status indicator 83, a used communication network display 84, and a mode display 111, which have already been described. At the same time, a guidance display section 171, a safety information display section 172, and an additional information display section 173 are displayed.
[0159]
The mode display unit 111 displays the information terminal 166 in the safety confirmation mode of the current position in a message format or the like.
[0160]
The guidance display unit 171 displays a message for guiding the operation of the information terminal 166 to the terminal user 165 (FIG. 20). Here, it is assumed that the user is instructing to input a password required for authentication for ensuring security.
[0161]
The reason for applying security is that a third party unrelated to the resident illegally uses the safety information, for example, using the information on the period and place of evacuation and suffers theft or other damage during evacuation. This is to prevent it. Another purpose is to prevent information leaks that could lead to various solicitations or buying and selling of victim lists by unauthorized use of safety information by a third party. Instead of the password method, authentication may be performed by using at least one piece of information on the residents of the house 164 to be checked for safety. By authenticating a plurality of information, security can be further enhanced. Since there is a trade-off between the strength of security and the convenience of the genuine terminal user 165 who wants to be informed of the safety information, the victim may be able to set the strength of security. Alternatively, a partner who wants to notify the safety information may be explicitly registered in the safety confirmation, and the registered terminal user may input his / her information (such as the number of the basic resident register) to substitute for the password. .
[0162]
In FIG. 20, the above-mentioned authentication information and the current position information of the terminal user 165 are transmitted as information C from the information terminal 166 to the center station 2, and in response, the corresponding safety information D is This is returned to the terminal 166.
[0163]
As a result, in the information terminal 166, on the safety information screen 170 shown in FIG. 21, the safety information 172 for the house (◎ san's house) to be confirmed is displayed, and if necessary, the additional information 173 (such as a map showing a place) May be displayed.
[0164]
A similar system may be used to display not only a disaster area but also a virtual reality display showing the streets before (or after) the disaster. Safety information may be displayed on the information terminal or head-up display of the rescue team without authentication.
[0165]
In the above embodiment, the disaster area information terminal 5 and the information terminal outside the disaster area 7a, 7b are described separately. However, a disaster occurs in the area where the information terminal outside the disaster area 7a, 7b exists. Is located in the stricken area, it becomes the stricken area information terminal 5.
[0166]
【The invention's effect】
As described above, according to the present invention, it is possible to prevent a sudden increase in communication traffic for safety confirmation that occurs immediately after the occurrence of a disaster, and to reliably collect safety confirmation information in a disaster area.
[Brief description of the drawings]
FIG. 1 is a configuration diagram showing an embodiment of a safety confirmation system according to the present invention.
FIG. 2 is a diagram showing an access restriction operation specification defined by a center station and each information terminal in FIG. 1;
FIG. 3 is a diagram showing a specific example of hierarchization of safety confirmation information used in the embodiment shown in FIG. 1;
FIG. 4 is a block diagram showing a specific example of a center station in FIG. 1;
FIG. 5 is a block diagram showing a specific example of each information terminal in FIG. 1;
FIG. 6 is a diagram showing a specific example of a device connected to the input / output means in FIG.
FIG. 7 is a flowchart showing a specific example of an operation when access to the disaster area information terminal in FIG. 1 is restricted.
FIG. 8 is a flowchart showing a specific example of an operation of the center station at the time of access restriction in FIG. 1;
9 is a diagram illustrating a specific example of a display screen when a disaster has not occurred in the information terminal in FIG. 1;
10 is a diagram showing a specific example of a safety information input request screen when a disaster occurs at the disaster area information terminal in FIG. 1;
11 is a diagram showing a specific example of a safety information transmission wait screen on the disaster area information terminal in FIG. 1;
FIG. 12 is a diagram showing a specific example of a safety information transmitted screen on the disaster area information terminal in FIG. 1;
13 is a diagram showing a specific example of a related person safety screen on the disaster area information terminal in FIG. 1;
FIG. 14 is a diagram showing a specific example of a polling screen on the disaster area information terminal in FIG. 1;
FIG. 15 is a diagram showing another specific example of the polling schedule display unit in FIG. 14;
FIG. 16 is a diagram illustrating a specific example of a safety information input request screen that enables transmission of safety information of a plurality of persons.
FIG. 17 is a diagram showing a specific example of a data format of safety information in the embodiment shown in FIG. 1;
FIG. 18 is a diagram showing a specific example of a transmitted screen after transmission of a plurality of pieces of safety information input on the safety information input request screen shown in FIG. 16;
FIG. 19 is a diagram showing a specific example of a safety confirmation screen displayed on the safety confirmation terminal outside the disaster area in FIG. 1;
20 is a diagram showing an operation of confirming safety at the disaster site shown in FIG.
21 is a diagram showing a specific example of a safety information screen on the information terminal of the terminal user in FIG. 20.
[Explanation of symbols]
1 satellite
2 Center station
3 Safety confirmation server
4 Affected areas
5 Disaster area information terminal
6 Network
7a, 7b Information terminal outside the affected area
9 Disaster Prevention Headquarters
10 Access Restriction Operation Specifications
11a Basic section of hierarchy of safety confirmation information
11b Expansion section of safety confirmation concession hierarchy
21 Radio section (transmission and reception)
22 Receiving data stream processing means
23 Payload data output means
24 General control information extraction means
25 Disaster judgment means
26 Disaster information external input means
27 Console
28 Payload data input means
29 Safety confirmation server input / output means
30 Comprehensive control means
31 Terminal location storage means
32 Polling control means
33 Transmission data stream processing means
34 Transmission scheduler
35 Access restriction information injection means
36 General control information injection means
41 Radio section (transmission and reception)
42 General control information extraction means
43 received data stream processing means
44 Access restriction information extraction / holding means
45 Audio output means
46 Display output means
47 Operating means
48 Non-voice data input / output means
49 Dedicated operating means
50 Voice input means
51 Comprehensive control means
52 voice conversion means
53 Delayable data holding means
54 Real-time data processing means
55 Transmission timing generation means
56 switches
57 General control information injection means
80 Disaster non-occurrence screen
81 Terrestrial communication network status indicator
82 Satellite Network Status Indicator
83 Position acquisition status indicator
84 Display of communication network used
85 Disaster Presence Display
86 Map display
87 Current location information display
90 Safety information input request screen
91 Disaster information display
92 Safety confirmation information input menu display section
95 Safety information transmission wait screen
96 Safety information transmission status display section
97 Transmission time prediction information display section
98 Satellite Communication Network Traffic Information Department
100 Safety information sent screen
101 Safety information registration result / additional information display section
110 Person Safety Screen
111 mode display
112 Related person current position display section
113 Related person safety information display section
114 Related facility information display section
115 Family relationship selection menu display
116 Company relationship selection menu display section
120 Polling screen
121 Polling schedule display section
122 Polling-related information display section
130 Safety information input request screen
131 Multiple safety information address hierarchy display section
132 Multiple safety information personal name hierarchy display
133 Guide display section
134 Confirmation map display button
135 Map for confirmation
136 Legend of Safety Confirmation Status
140 Multiple Safety Information Sent Screen
141 Label display section
142 Posting data final confirmation time display section
143 Individual safety information display section
144 Safety information additional data display section
150 Safety confirmation screen
151 Area selection menu display
152 Individual safety information display section
164 Houses subject to safety confirmation
165 terminal user
166 Information terminal
167 Positioning satellite
170 Safety information screen
171 Information display
172 Safety information display section
173 additional information display

Claims (16)

Means for maintaining safety information in the disaster area in a hierarchical manner according to its importance and data length;
Means for transmitting safety information of a hierarchy corresponding to a command regarding the safety information to be received. A center station that controls the information terminal according to claim 1 in the disaster area and transmits an instruction signal of a level of safety information that can be transmitted from the information terminal,
At least one of a means for inputting information indicating the presence or absence of a disaster and a means for detecting the occurrence of a disaster from a communication congestion state,
Means for determining a level of a layer at which the safety information held in the information terminal can be transmitted based on the magnitude of the disaster,
Means for transmitting an access restriction level for controlling the information terminal based on the determination to the information terminal. In a safety confirmation system comprising the information terminal according to claim 1 and the center station according to claim 2,
The safety is characterized in that the time at which the access restriction is relaxed is distributed for each information terminal regionally, according to the calling number of the information terminal, or according to the unique address of the information terminal, or based on a random number. Confirmation system. In a safety confirmation system comprising the information terminal according to claim 1 and the center station according to claim 2,
A safety confirmation system, wherein the information terminal displays a time when access restrictions are relaxed. In a safety confirmation system comprising the information terminal according to claim 1 and the center station according to claim 2,
The information terminal is capable of inputting hierarchical safety information stepwise according to the current access restriction level, or at once without depending on the current access restriction level. And safety confirmation system. In a safety confirmation system including an information terminal and a server that collects safety information from the information terminal,
When transmitting the safety information from the information terminal, the safety information of a plurality of disaster victims is transmitted collectively in one transmission, and the ratio of the safety information to the communication data amount is increased. The safety confirmation system according to claim 6,
A safety confirmation system characterized in that when multiple layers of safety information are transmitted collectively, safety information data of different layers can be mixedly transmitted. In a safety confirmation system including an information terminal and a server that collects safety information from the information terminal,
A safety confirmation cannot be transmitted from an information terminal using information from one or more types of sensors mounted on the information terminal or information from one or more types of sensors that can be operated by proximity communication or the like from the information terminal. In this case, a safety confirmation system that enables automatic transmission of safety information or automatic response to safety information polling. An information terminal of a safety confirmation system in which a level of safety information to be transmitted is regulated by a command from the center,
In addition to the function of transmitting the safety information of the terminal user, general information related to the disaster such as the damage situation and the rescue schedule transmitted from the center station, or evacuated to another evacuation center that is in a state where information is blocked from the terminal user An information terminal of a safety confirmation system, wherein at least one of safety information of a victim can be received. In a safety confirmation system including an information terminal, a center station that controls the information terminal, and a server that collects safety information from the information terminal,
Transmitting the safety information from the center station to information terminals inside and outside the disaster area,
The information terminal receives the safety information, selects and displays the safety information of a predetermined family or close relative or other necessary person, or damage information such as personal property or real estate, and displays the information of interest to the terminal user. A safety confirmation system characterized in that it is possible to confirm the safety of a person and the damage status of property. An information terminal of a safety confirmation system in which a level of safety information to be transmitted is regulated by a command from the center,
An information terminal characterized in that it is possible to hierarchically input safety information having a small data amount to safety information having a large data amount. An information terminal of a safety confirmation system in which a level of safety information to be transmitted is regulated by a command from the center,
An information terminal, characterized in that a third party or the victim can input information on the safety of the victim by using an electronic certification means possessed by the victim or another objective certification means. A safety confirmation server of a safety confirmation system that collects safety information from an information terminal,
From the information terminal of the safety confirmation system that has a function to easily input the safety information of multiple victims, or a function to centrally manage the list of victims evacuated to the evacuation site and the safety information, the victim list and the safety information format can be used. A safety confirmation server characterized in that it can be received and interpreted. A safety confirmation system in which an information terminal transmits safety information under control from a center station,
When the safety information transmitted from the information terminal is collected by the safety confirmation server based on the call from the center station, a function of displaying the call time of each information terminal on the information terminal, or a call schedule for each district, etc. At least one of a function of displaying information relating to a call schedule at a plurality of information terminals or a function of urging a user of the information terminal to move to a place where communication is possible when approaching the call time of the information terminal is provided. A safety confirmation system characterized by the following. A center station of a safety confirmation system that controls an information terminal to transmit safety information,
At least one of the call status from the information terminal, the observed value of the traffic volume, or the explicit voice report or data report of the occurrence of a disaster from the information terminal, or information from an external organization monitoring the occurrence of the disaster A center station that detects the occurrence of a disaster by using one of them. The information terminal according to claim 1, wherein:
An information terminal characterized by being usable as a normal voice or data terminal except when a disaster occurs.

Images