JP2008077465A - Position information management system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a position information management system easily determining that a child is in danger and giving an alarm. <P>SOLUTION: (1) A position information management server 21 requests a child cellular phone 23 to report a current position. (2) The child cellular phone 23 acquires the current position by use of GPS function. (3) The cellular phone 23 reports the acquired current position to the management server 21. (4) The management server 21 determines, based on the current position acquired from each cellular phone 23, a dangerous state (e.g., a child using the cellular phone 23 is alone) or not. (5) The management server 21 reports, when the dangerous state is determined, that effect to a guardian cellular phone 25 of the cellular phone 23 determined to be in danger. According to this, an alarm showing that the user of the child cellular phone is in danger in relation with a user of another cellular phone can be easily given. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a position information management system, and more particularly to a position information management system that determines whether or not the owner of a portable terminal is in a dangerous state based on the position information of the portable terminal.

  As a conventional location information management system, there is a mobile safety confirmation device. FIG. 13 is a flowchart showing the operation of the mobile safety confirmation device. In step P3, the traveler safety confirmation device reads the scheduled movement route of the subject of the identification code from the storage unit and displays it on the map on the display unit. After that, when a position signal with the identification code is input via the communication unit, the position of the mobile terminal, that is, the position of the target person of the identification code that holds the position is identified from the position signal. Each code is distinguished and stored in the storage unit in the chronological order (in the order of input from the communication unit), and the positions are read from the storage unit and sent to the display unit. indicate. The actual movement route is data obtained by continuing the current position stored in the storage unit, and is a locus of the current position. The planned movement path and the actual movement path are aligned with the map, and are displayed on the display unit in a different color from each other on the map.

  In step P4, the traveler safety confirmation device determines whether or not the distance D between the input position and the stored scheduled movement route is within the maximum distance Dmax. When the distance D exceeds the maximum distance Dmax, the process proceeds to Step P10, and an alarm signal is output to the alarm unit, and the actual movement route of the subject displayed on the display unit is blinked, and the identification code The display unit displays data such as the name, address, mobile terminal phone number, and emergency contact phone number related to the subject. Upon receiving the alarm signal, the alarm unit outputs an alarm sound from the speaker.

JP 2001-76289 A

  The aforementioned mobile safety confirmation device has the following problems. Recently, children may be involved in incidents on a normal course of action, such as a regular school route. Incidents often occur with a single child. However, in the above-described mobile safety confirmation device, since the determination is based on the distance D between the input position and the stored planned movement route, such a case cannot be detected. There is.

  In addition, there are cases where a child moves along a route different from a normal route due to an event such as excursion or school excursion. Even in such a case, the above-described mobile safety confirmation device has a problem that it cannot be handled because the determination is made based on the distance D between the input position and the stored planned movement route.

  Therefore, an object of the present invention is to provide a position information management system that can easily and easily determine that a child is in a dangerous state and issue a warning.

  Means for solving the problems relating to the present invention and effects of the present invention will be described below.

  A location information management system according to the present invention is a location information management system having a portable terminal and a location information management device capable of transmitting and receiving information to and from each other via a network, and the location information management device is connected to the portable terminal. Position request information generating means for generating position request information for requesting transmission of position information indicating the current position, position request information transmitting means for transmitting the position request information to the portable terminal, and receiving the position information from the portable terminal. The position information receiving means for receiving, the received position information about the portable terminal and the position information received from another portable terminal different from the portable terminal, and the distance between the portable terminal and the other portable terminal Distance calculating means for calculating the mobile terminal, whether the other mobile terminal is within a predetermined range relative to the mobile terminal, Judgment means for judging based on the distance from the mobile terminal, the quantity of the other mobile terminals judged to be within a predetermined range with respect to the mobile terminal is less than or less than a predetermined quantity If the mobile terminal has received the location request information, the location request information receiving means for receiving the location request information, the alert information transmission means for sending the alert information to a predetermined destination, Position information acquisition means for acquiring the position information and position information transmission means for transmitting the position information to the position information management device.

  Accordingly, the person who owns the mobile terminal can easily issue a warning for a situation where the number of persons who own other mobile terminals is less than or less than a predetermined number within a predetermined range. Therefore, the warning that the owner of the mobile terminal is in a dangerous state in relation to the owner of the other mobile terminal can be easily issued.

  A location information management device according to the present invention is a location information management device capable of transmitting and receiving information to and from a mobile terminal via a network, and the location information management device is configured to transmit the current location of the mobile terminal from the mobile terminal. The position information receiving means for receiving position information indicating the position information received from the position information received from the position information received from the other portable terminal different from the position of the portable terminal A distance calculating means for calculating a distance from the portable terminal, whether the other portable terminal is within a predetermined range with respect to the portable terminal, and the calculated portable terminal and the other portable terminal; Judgment means for judging based on a distance, and when the quantity of the other portable terminal judged to be within a predetermined range with respect to the portable terminal is less than or less than a predetermined quantity To have a warning information transmitting means for transmitting warning information to a predetermined destination.

  Accordingly, the person who owns the mobile terminal can easily issue a warning for a situation where the number of persons who own other mobile terminals is less than or less than a predetermined number within a predetermined range.

  In the location information management device according to the present invention, the mobile terminal and the other mobile terminal belong to the same group.

  This makes it easy for the person who owns the mobile terminal to belong to the same group and the person who owns the other mobile terminal is less than or less than the predetermined number within the predetermined range. A warning can be issued. That is, a warning can be issued when there is no person belonging to the same group around the person who owns the portable terminal.

  In the positional information management device according to the present invention, when the mobile terminal belongs to a plurality of groups, the other mobile terminal belongs to one of the groups to which the mobile terminal belongs.

  Thereby, even if the owner of the mobile terminal belongs to a plurality of groups, a warning can be issued easily.

  The position information management device according to the present invention further includes group selection means for selecting a group to which the mobile terminal belongs based on at least one of a current time and a current position of the mobile terminal.

  Thereby, even if the group to which the user belongs changes depending on the current time and the current location, a warning can be easily issued.

  The position information management device according to the present invention further includes position request information generating means for generating position request information for requesting the portable terminal to transmit position information indicating a current position, and the position request information is transmitted to the portable terminal. Position request information transmitting means for transmitting to

  Thereby, the position information management device can acquire the current position of the mobile terminal when desired.

  In the location information management device according to the present invention, the location request information generation means further includes authentication information indicating that the location request information is location request information generated by the location information management device.

  Thereby, the location information management device can prove that the device itself can receive the current location from the mobile terminal.

  A mobile terminal according to the present invention is a mobile terminal capable of transmitting and receiving information to and from a location information management device via a network, wherein the mobile terminal acquires location information indicating its current location at a predetermined time. Information acquisition means and position information transmission means for transmitting the position information to the position information management device are provided.

  Thereby, the portable terminal can automatically notify its current position at a predetermined time.

  The portable terminal according to the present invention further includes a location request information receiving unit that receives the location request information, and the location information acquisition unit receives the location information when receiving the location request information as the predetermined time. get.

  Thereby, the portable terminal can notify the current position only when there is a request to notify the current position from the position information management device.

  In the mobile terminal according to the present invention, the location request information receiving means further receives location request information having authentication information indicating that the location request information is generated by a predetermined location information management device, and further, the authentication An authentication unit that determines whether the information is correct or not; and the position information acquisition unit acquires the position information when receiving the position request information including the proper authentication information.

  Thereby, only when location request information is transmitted from a specific location information management device, the mobile terminal can obtain the current location.

  Here, the correspondence relationship between the elements described in the claims and the elements in the embodiment is shown. The location information management system corresponds to the location information management system 1, the location information management device corresponds to the location information management server 21, and the mobile terminal corresponds to the child mobile phone 23.

  The position request information receiving means corresponds to the CPU 231, the memory 232, and the communication circuit 235, the position information acquisition means corresponds to the CPU 231, the memory 232, and the GPS circuit 234, and the position information transmitting means corresponds to the CPU 231, the memory 232, and the communication circuit 235.

The position request information generation means is the CPU 211 and the memory 212, the position request information transmission means is the CPU 211, the memory 212 and the communication circuit 218, the position information reception means is the CPU 211, the memory 212 and the communication circuit 218, and the distance calculation means is the CPU 211 and the memory. 212, the judging means corresponds to the CPU 211 and the memory 212, and the warning information transmitting means corresponds to the CPU 211, the memory 212, and the communication circuit 218, respectively.

  An embodiment of the location information management system according to the present invention will be described below.

1. Overview An overview of a location information management system according to the present invention will be described with reference to FIG.

(1) The location information management server 21 requests the mobile phone 23 for children to notify the current location.

(2) The child mobile phone 23 acquires the current position using the GPS function.

(3) The child mobile phone 23 informs the location information management server 21 of the acquired current location.

(4) Based on the current position acquired from each child mobile phone 23, the location information management server 21 determines whether or not the child is in a dangerous state (for example, one child owns the child mobile phone 23). to decide.

(5) The location information management server 21 notifies the guardian mobile phone 25 of the child mobile phone 23 that is determined to be in a dangerous state to that effect.

  Accordingly, the child mobile phone owner can easily issue a warning that the child mobile phone is in a dangerous state in relation to another mobile phone owner.

2. Configuration FIG. 2 shows a functional block diagram of the location information management system according to the present invention. The location information management system M1 includes a location information management device M3 and a mobile phone M5. The location information management device M3 and the mobile phone M5 can transmit / receive information to / from each other via a network.

  The position information management device M3 includes a position request information generation unit m301, a position request information transmission unit m303, a position information reception unit m305, a distance calculation unit m307, a determination unit m309, and a warning information transmission unit m311.

  The location request information generating unit m301 generates location request information for requesting the mobile phone M5 to transmit location information indicating the current location. The location request information transmitting unit m303 transmits the location request information to the mobile phone M5. The location information receiving unit m305 receives the location information from the mobile phone M5.

  The distance calculation means m307 uses the received location information regarding the mobile phone M5 and the location information received from another mobile phone M5 different from the mobile phone M5 to use the mobile phone M5 and the other mobile phone. The distance to M5 is calculated. Based on the calculated distance between the mobile phone M5 and the other mobile phone M5, the determining unit m309 determines whether or not the other mobile phone M5 is within a predetermined range with respect to the mobile phone M5. to decide.

  The mobile phone M5 and the other mobile phone M5 belong to the same group. When the mobile phone M5 belongs to a plurality of groups, the other mobile phone M5 belongs to one of the groups to which the mobile phone M5 belongs.

  When the quantity of the other mobile phone M5 determined to be within a predetermined range with respect to the mobile phone M5 becomes less than a predetermined quantity or smaller than a predetermined quantity, The warning information is transmitted to a predetermined transmission destination.

  The cellular phone M5 includes a location request information receiving unit m501, a location information acquiring unit m503, and a location information transmitting unit m505. The position request information receiving unit m501 receives the position request information. When receiving the position request information, the position information acquisition unit m503 acquires the position information. The position information transmitting unit m505 transmits the position information to the position information management device M3.

3. Network Configuration A network configuration of the location information management system 1 according to the present invention will be described with reference to FIG. The location information management system 1 includes a location information management server 21, a child mobile phone 23, and a guardian mobile phone 25.

  The location information management server 21 and the child mobile phone 23 can transmit / receive information to / from each other via a network. The location information management server 21 can make a call with the guardian's mobile phone 25.

4. Hardware configuration
4.1. Hardware Configuration of Location Information Management Server 21 The hardware configuration of the location information management server 21 will be described with reference to FIG. The location information management server 21 includes a CPU 211, a memory 212, a hard disk 213, and a communication circuit 218.

  The CPU 211 performs processing based on other applications such as an operating system (OS) and a location information management program recorded on the hard disk 213. The memory 212 provides a work area for the CPU 211. The hard disk 213 records and holds other applications such as an operating system (OS) and a position information management program and various data. The data recorded on the hard disk 213 will be described later.

  The communication circuit 218 includes a communication circuit connected to a network, and performs communication with the external child mobile phone 23 and the guardian mobile phone 25.

  Note that a keyboard 214, a mouse 215, a display 216, and a CD-ROM drive 217 are connected to the location information management server 21. The keyboard 214 and the mouse 215 accept external commands. The display 216 displays an image such as a user interface. The CD-ROM drive 217 reads data from the CD-ROM, such as reading a position information management program from the CD-ROM 210 in which the position information management program is recorded and a program of another application from another CD-ROM. .

4.2. Hardware Configuration of Child Mobile Phone 23 The hardware configuration of the child mobile phone 23 will be described with reference to FIG. The child mobile phone 23 includes a CPU 231, a memory 232, a display 233, a GPS circuit 234, and a communication circuit 235.

  The CPU 231 performs processing based on other applications such as a child mobile phone program recorded in the memory 232. The memory 232 records and holds other programs such as a mobile phone application program for children, a mobile phone program (OS), and various data.

  The display 233 displays information such as a user interface. The GPS circuit 234 acquires position information of the child mobile phone 23 through the GPS system. The communication circuit 235 performs a call or data communication via a network with the location information management server 21 or another mobile phone.

4.3. Hardware configuration of the guardian mobile phone 25 The hardware configuration of the guardian mobile phone 25 will be described with reference to FIG. The guardian's mobile phone 25 includes a CPU 251, a memory 252, a display 253, and a communication circuit 255.

  The CPU 251 performs processing based on other applications such as a guardian's mobile phone program recorded in the memory 272. The memory 252 records and holds other programs such as a mobile phone program (OS) and various data.

  The display 253 displays information such as a user interface. The communication circuit 255 makes a call with the location information management server 21 and other mobile phones.

5. Data The hard disk 213 of the location information management server 21 records and holds a registered terminal master database (hereinafter, registered terminal master DB), a terminal group database (hereinafter, terminal master DB), and an alert condition check table.

5.1. Registered terminal master DB
In the registration terminal master DB, various information related to the child mobile phone 23 is registered. An example of the registered terminal master DB is shown in FIG.

  The registered terminal master DB has a [terminal ID] column C701, an [affiliation group] column C703, a [telephone number] column C705, and an [emergency contact telephone number] column C707. In the [terminal ID] column C701, an ID uniquely assigned to each child mobile phone 23 is described as a terminal ID. In the [Affiliation Group] column C703, a group (described later) to which the child who owns the child mobile phone 23 having the terminal ID described in the [Terminal ID] column C701 belongs is described. In the [telephone number] column C705, the telephone number of the child mobile phone 23 described in the [terminal ID] column C701 is described. [Emergency Contact Phone Number] column C707 describes a phone number of a contact when an emergency occurs in the child mobile phone 23 having the terminal ID described in the [Terminal ID] column C701. Specifically, the telephone number of the guardian's mobile phone 25 is described.

  In FIG. 7, a child who owns the child mobile phone 23 with the telephone number “090-***-***” belongs to the groups “A” and “B” and is the guardian of the guardian of the child. When the telephone number of the mobile phone 25 is “080-***-***”, the terminal ID “X001” allocated to the child mobile phone 23 is assigned to the “terminal ID” column C701 and the group “A”. , “B” in the [Membership group] column C703, the telephone number “090-***-***” in the [Telephone number] column C705, and the telephone number “080-***” of the guardian's mobile phone 25. -**** "is registered in the [Emergency Contact Phone Number] column C707.

  Note that data related to the child mobile phone 23 and the like is registered in advance in the registration terminal master DB by a guardian who wants to use the location information management system 1 or a system administrator.

5.2. Terminal group DB
In the terminal group DB, which child who owns the child mobile phone 23 belongs to each group is registered. Here, the group means a group formed by a child who owns the child mobile phone 23 in social life, for example, a group formed by a school class or a cram school friend.

  An example of the terminal group DB is shown in FIG. The terminal group DB has a [group ID] column C801 and an [affiliated terminal] column C803. In the [Group ID] column C801, an ID uniquely assigned to each child mobile phone 23 is described as a terminal ID. [Affiliated terminal] column C803 describes the terminal IDs of the child mobile phones 23 belonging to the group described in the [Group ID] column C801.

  In FIG. 8, when a child who owns the child mobile phone 23 given the terminal IDs “X001”, “X002”, and “X154” belongs to a certain group, the group ID “A” of the group is [ In the “Group ID” column C801, the terminal IDs “X001”, “X002”, and “X154” are described in the [Affiliated terminal] column C803, respectively.

  Note that data relating to the child mobile phone 23 belonging to the group is registered in advance in the registration terminal master DB by a guardian or the like who wants to use the location information management system 1 or a system administrator.

5.3. Alert Condition Check Table The alert condition check table determines whether or not the child who owns the child mobile phone 23 registered in the registered terminal master DB is in a dangerous state by the location information management server 21. It is a table used at the time. An example of the alert condition check table is shown in FIG.

  The alert condition check table has a [terminal ID] column C901, a [current position] column C903, and an [alert] column C905.

  In the [terminal ID] column C901, a terminal ID uniquely assigned to each child mobile phone 23 is described. In the [current position] column C903, the position of the child who owns the child mobile phone 23 having the terminal ID described in the [terminal ID] column C901 is described. In the [Alert] column C905, the state of the child who owns the child mobile phone 23 described in the [Terminal ID] column C901 is described by distinguishing values of “0”, “1”, and “99”. . Here, the value “99” in the “Alert” column is “waiting for condition check”, the value “0” is “alert not required” that the corresponding child is not in a dangerous state, and the value “1” is the corresponding child. Means “alert required”, which is a dangerous state.

  In FIG. 9, the child having the child mobile phone 23 with the terminal ID “X001” is currently present at “34 degrees 05 minutes 37 seconds 94 north latitude, 137 degrees 32 minutes 28 seconds 43 east longitude” together with other children. If it is not dangerous, the terminal ID “X001” is the value in the “Terminal ID” column C901, “North latitude 34 ° 05: 37: 94, East longitude 137 ° 32: 28” 43 is the value in the “Current position” column C903. “0” is described in the [Alert] column C905.

6. Operation of location information management system 1
6.1. Outline An outline of operations of the position information management server 21 and the child mobile phone 23 of the position information management system 1 will be described with reference to FIGS. 10, 11, and 12. Note that DB1, DB2, and DB3 shown in FIGS. 10 and 11 respectively indicate a registration master DB, a terminal group DB, and an alert condition check table.

  When the CPU 211 of the location information management server 21 starts the location information management program, the alert condition check table (DB3) is reset (S1001). At this time, the CPU 211 sets the value of the [current position] column C903 of the alert condition check table to “Null” and the value of the [alert] column C905 to “99”.

  The CPU 211 reads one terminal ID described in the [terminal ID] column C701 of the registered terminal master DB (DB1) (S1003). In the following, it is assumed that the terminal ID read in step S1003 is “T”. When the CPU 211 determines that the read terminal ID “T” is not “Null” (S1005), the CPU 211 reads the value of the [alert] column C905 corresponding to the terminal ID “T” in the alert condition check table (DB3) (S1007). ).

  When the CPU 211 determines that the value of the read [alert] column C905 is not “99” (S1009), the CPU 211 generates position request information (S1011). The location request information is information that requests the mobile phone to transmit location information indicating the current location. The CPU 211 transmits the generated location request information to the child mobile phone 23 corresponding to the terminal ID “T” (S1013). When transmitting the location request information, the network functions of the location information management server 21 and the child mobile phone 23 are used.

Moving to FIG. 12, when the CPU 231 of the child mobile phone 23 with the terminal ID “T” receives the position request information (S1201),
The program is activated (S1203). The CPU 211 acquires the current position as position information via the GPS circuit 234 based on the activated program (S1205). The CPU 231 transmits the acquired position information to the position information management server 21 (S1207).

  Returning to FIG. 10, when the CPU 211 of the location information management server 21 receives location information from the child mobile phone 23 with the terminal ID “T” (S1015), it corresponds to the terminal ID “T” in the alert condition check table. The acquired current position information is described in the [current position] column C903 (S1016). Then, the CPU 211 sets “0” to the number of neighbors related to the terminal ID “T”. The number of neighbors refers to the number of other child mobile phones 23 existing near the target child mobile phone 23. In this embodiment, the number of other child mobile phones 23 existing within a radius of 10 m from the target child mobile phone 23 is set as the number of neighbors. Note that the number of neighbors is held in the memory 212.

  The CPU 211 acquires one of the group IDs of the group to which the terminal ID “T” belongs from the “affiliation group” column C703 of the registered terminal master DB (DB1) (S1019). Note that the group ID acquired in step S1019 is “G”. The CPU 211 determines whether or not the group ID “G” is “Null” (S1021). When determining that the group ID “G” is “Null”, the CPU 211 sets “1” to the value of the [alert] column C905 regarding the terminal ID “T” in the alert condition check table (S1023).

Moving to FIG. 11, when the CPU 211 determines that the group ID “G” is not “Null”, the CPU 211 is registered in the [affiliated terminal] column C803 corresponding to the group ID “G” from the terminal group DB (DB2). One of the terminal IDs is acquired (S1103). In the following, it is assumed that the terminal ID read in step S1103 is “T1”. If the CPU 211 determines that the read terminal ID “T1” is not “Null” (S1105), it generates location request information (S1111). The CPU 211 transmits the generated location request information to the child mobile phone 23 corresponding to the terminal ID “T1” (S1113).
The processing executed by the child mobile phone 23 (terminal ID “T1”) that has received the location request information transmitted in step S1113 is the same as the processing shown in FIG.

  When the CPU 211 of the location information management server 21 receives the location information from the child mobile phone 23 with the terminal ID “T1” (S1115), the [current location] column C903 corresponding to the terminal ID “T1” in the alert condition check table. The acquired position information is described (S1116).

  The CPU 211 calculates the distance between the child mobile phone 23 with the terminal ID “T” and the child mobile phone 23 with the terminal ID “T1” (S1121). At this time, the CPU 211 calculates the distance between both terminals based on the position information described in the [current position] column C903 corresponding to the terminal ID “T” and the terminal ID “T1” in the alert condition check table. .

  The CPU 211 calculates the calculated distance (calculation) as to whether or not there is a child who owns the child mobile phone 23 with the terminal ID “T1” near the child who owns the child mobile phone 23 with the terminal ID “T”. Determination is made based on whether or not (distance) is equal to or greater than a specified value (reference distance) (S1123). The reference distance is set in advance and stored in the hard disk 213.

  When determining that the calculated distance is smaller than the reference distance, the CPU 211 adds “1” to the number of neighbors related to the terminal ID “T” (S1125). The CPU 211 determines whether or not the number of neighbors related to the terminal ID “T” is equal to or greater than a specified value (set number of neighbors) (S1127). Note that the set number of neighbors is set in advance and stored in the hard disk 213. If the CPU 211 determines that the number of neighborhoods related to the terminal ID “T” is equal to or greater than the set number of neighborhoods, the CPU 211 sets “0” in the [alert] column C905 related to the terminal ID “T” in the alert condition check table (S1129). For example, if “1” is set as the set number of neighborhoods, one or more children who have other child mobile phones 23 are near the child who owns the child mobile phone 23 with the terminal ID “T”. If it exists, that is, if the target child is not one, it is determined that the alert is not necessary because it is not in a dangerous state.

  If the CPU 211 determines in step S1127 that the number of neighborhoods related to the terminal ID “T” is smaller than the set number of neighborhoods, and if it is determined in step S1123 that the calculated distance is greater than or equal to the reference distance, the child of the terminal ID “T” For other children belonging to the same group (group ID “G”), judging that there is no child who owns the child mobile phone 23 with the terminal ID “T1” near the child who owns the mobile phone 23 In order to determine whether or not the child having the mobile phone 23 is near the child who owns the child mobile phone 23 with the terminal ID “T”, the processing from step S1103 is executed. Further, when the CPU 211 determines that the terminal ID “T1” read in step S1105 is “Null”, the CPU 211 determines that the processing for the child mobile phone 23 belonging to the same group (group ID “G”) has ended. In order to determine whether or not a child having another child mobile phone 23 belonging to another group exists near the child who owns the child mobile phone 23 having the terminal ID “T” (step S1019). The subsequent processing is executed.

When the CPU 211 of the location information management server 21 finishes the processing from step S1001 to step S1129 for all the mobile phones 23 for children registered in the registration terminal master DB, the alert condition check table [ The terminal ID whose value in the “alert” column C903 is “1” is extracted from the [terminal ID] column C901. Then, the telephone number of the guardian's mobile phone 25 corresponding to the extracted terminal ID is acquired from the [Emergency Contact Telephone Number] column C707 of the registered terminal master DB. Based on the acquired emergency contact telephone number, the CPU 211 notifies the guardian of warning information that the corresponding child is one and is in a dangerous state.

[Other Examples]
1. Configuration In the above-described first embodiment, the mobile phone 23 for children is illustrated as a mobile terminal. However, any mobile phone that can acquire its current location and can communicate with the location information management server 21 is illustrated. It is not limited. For example, a PDA with a GPS function and a communication function may be used.

  In the first embodiment, the warning information is communicated to the guardian's mobile phone 25. However, the present invention is not limited to the example as long as the warning information can be communicated. For example, it may be a contact to a fixed telephone of a school, police, fire department or the like as a parent or child's affiliation, or a contact via an IP phone to a PC or the like.

2. Calculation of distance In the above-described first embodiment, the distance between one child's mobile phone 23 and another child's mobile phone 23 is calculated as a straight line distance between both children's mobile phones 23. It is not limited to the example as long as it indicates the distance between mobile phones. For example, the distance measured along the road by combining the current position of the cellular phone 23 for children and the map information may be the distance between the cellular phones for children. As a result, a more realistic distance can be calculated.

3. Judgment of dangerous state In the above-described first embodiment, when it is determined that there are no more than a predetermined number of people within the predetermined range around the owner of the child mobile phone 23, the dangerous state It was determined that Further, the determination may be made in consideration of the relationship between the child mobile phone 23 and another child mobile phone 23. For example, when the child mobile phone 23 exists on an outdoor road and the other child mobile phone 23 is in a building, even if it is within a predetermined range, Does not count.

4. Group In the above-described first embodiment, when the child of the child mobile phone 23 belongs to a plurality of groups, it is determined whether or not all the groups to which the child belongs belong to a dangerous state. However, the groups may be switched based on the current time when determining whether or not the state is dangerous. For example, if it is from 7:00 am to 6:00 pm, it may be a group related to a school, and if it is from 6:00 pm to 8:00 pm, it may be a group related to a cram school.

  The groups may be switched based on the current position of the child mobile phone 23. For example, if there is a current position around the school, a group related to the school may be selected, and if there is a current position around the school, a group related to the school may be selected.

  Furthermore, the group may be switched by combining the current position of the cellular phone 23 for children and the time for acquiring the current position.

5. Request for Current Location from Location Information Management Server 21 In the first embodiment, when the child mobile phone 23 receives location request information from the location information management server 21, the current location is acquired. Further, the location information management server 21 that has transmitted the location request information may perform an authentication process indicating that the child mobile phone 23 has a legitimate authority. Accordingly, it is possible to prevent inadvertent notification of the current position of the child mobile phone 23, which contributes to improvement of security.

6. Acquisition of Current Location with Child Mobile Phone 23 In the above-described first embodiment, the child mobile phone 23 acquires the current location when receiving location request information from the location information management server 21. However, the location information may not be required from the location information management server 21, and the current location may be acquired every predetermined time and transmitted to the location information management server 21.

7. Contact with the Parental Cellular Phone 25 In the above-described first embodiment, the communication to the guardian's cellular phone 25 is performed to notify that it is in a dangerous state. If there is, it is not limited to the example. For example, the data communication between the location information management server 21 and the guardian's mobile phone 25 may be used to make a contact using e-mail, for example. In this case, the location information management server 21 may register an emergency contact mail address instead of the emergency contact telephone number in the registration terminal master DB. Moreover, you may make it use the communication by a telephone call and the contact by an e-mail together.

8. System that does not require the location information management server 21 In the first embodiment, the location information management server 21 uses the current location of the child mobile phone 23 to calculate the distance between the child mobile phones. However, the distance between the child mobile phones may be calculated by communication between the child mobile phones. For example, when P2P communication is possible between both mobile phones for children, the mobile phone 23 for children determines whether the mobile phones for both children are close to each other depending on whether the P2P communication is possible. If the child mobile phone 23 determines that there is no other child mobile phone 23 capable of P2P communication around the child mobile phone 23, the child mobile phone 23 may issue a warning to a predetermined contact.

9. Order of processing in flowchart In the first embodiment, each processing is realized based on each flowchart shown in the figure. However, as long as each process can be realized, the order of the processes in each flowchart is not limited to the example.

It is a figure which shows the outline | summary of the positional infomation management system which concerns on this invention. It is a functional block diagram of the positional information management system which concerns on this invention. It is the figure which showed the network structure of the positional infomation management system 1 which concerns on this invention. It is the figure which showed the hardware constitutions of the positional information management server 21 shown in FIG. It is the figure which showed the hardware constitutions of the mobile telephone 23 for children shown in FIG. It is the figure which showed the hardware constitutions of the mobile phone 25 for guardians shown in FIG. It is the figure which showed the data structure of registration terminal master DB. It is the figure which showed the data structure of terminal group DB. It is the figure which showed the data structure of the alert condition check table. 3 is a flowchart showing the operation of a location information management server 21. 3 is a flowchart showing the operation of a location information management server 21. 4 is a flowchart showing the operation of the child mobile phone 23; It is a figure for demonstrating a prior art.

Explanation of symbols

M1: Location information management system M3: Location information management device M5: Mobile phone m301: Location request information generation means m303: Location request information transmission means m305... Position information receiving means m307... Distance calculating means m309... Judging means m311... Warning information transmitting means m501. ··· Location information acquisition means m505 ··· Location information transmission means 1 ··· Location information management system 21 ··· Location information management server 23 · · · Mobile phone for children 25 · · · .... Cell phone for parents

Claims (20)

A location information management system having a portable terminal and a location information management device capable of transmitting and receiving information to and from each other via a network,
The location information management device includes:
Position request information generating means for generating position request information for requesting the mobile terminal to transmit position information indicating the current position;
Position request information transmitting means for transmitting the position request information to the portable terminal;
Position information receiving means for receiving the position information from the portable terminal;
Distance calculating means for calculating a distance between the portable terminal and the other portable terminal using the received positional information on the portable terminal and the position information received from another portable terminal different from the portable terminal;
Judgment means for judging whether or not the other portable terminal is present within a predetermined range with respect to the portable terminal based on the calculated distance between the portable terminal and the other portable terminal;
Warning information to a predetermined destination when the quantity of the other portable terminal that is determined to be within a predetermined range with respect to the portable terminal becomes less than or less than a predetermined quantity Warning information transmission means for transmitting
Have
The portable terminal is
Position request information receiving means for receiving the position request information;
When receiving the position request information, position information acquisition means for acquiring the position information;
Position information transmitting means for transmitting the position information to the position information management device;
Having
A location information management system characterized by A location information management device capable of transmitting / receiving information to / from a mobile terminal via a network,
The location information management device includes:
Position information receiving means for receiving position information indicating the current position of the portable terminal from the portable terminal;
Distance calculating means for calculating a distance between the portable terminal and the other portable terminal using the received positional information on the portable terminal and the position information received from another portable terminal different from the portable terminal;
Judgment means for judging whether or not the other portable terminal is present within a predetermined range with respect to the portable terminal based on the calculated distance between the portable terminal and the other portable terminal;
Warning information to a predetermined destination when the quantity of the other portable terminal that is determined to be within a predetermined range with respect to the portable terminal becomes less than or less than a predetermined quantity Warning information transmission means for transmitting
A location information management device. In the location information management device according to claim 2, further,
The mobile terminal and the other mobile terminal belong to the same group;
A position information management device characterized by the above. In the position information management device according to claim 3,
When the mobile terminal belongs to a plurality of groups, the other mobile terminal belongs to one of the groups to which the mobile terminal belongs;
A position information management device characterized by the above. In the location information management device according to claim 3,
Group selection means for selecting a group to which the mobile terminal belongs based on the current time or / and the current position of the mobile terminal;
A location information management device. In any one of the positional information management devices according to claims 2 to 5,
Position request information generating means for generating position request information for requesting the mobile terminal to transmit position information indicating the current position;
Position request information transmitting means for transmitting the position request information to the portable terminal;
A location information management device. In the positional information management device according to claim 6,
The position request information generating means includes
Including, in the location request information, authentication information indicating that the location information is generated by the location information management device;
A position information management device characterized by the above. A portable terminal capable of transmitting / receiving information to / from a location information management device via a network,
The portable terminal is
Position information acquisition means for acquiring position information indicating its current position at a predetermined time;
Position information transmitting means for transmitting the position information to the position information management device;
Having
A mobile terminal characterized by. A portable terminal according to claim 8, further comprising:
Position request information receiving means for receiving the position request information;
Have
The position information acquisition means includes
Obtaining the position information upon reception of the position request information as the predetermined time;
A mobile terminal characterized by. A portable terminal according to claim 9,
The location request information receiving means further includes:
Receiving location request information having authentication information indicating that it is location request information generated by a predetermined location information management device;
further,
Authentication means for determining whether the authentication information is correct or not;
Have
The position information acquisition means further includes
Obtaining the location information upon receipt of the location request information having the proper authentication information;
A mobile terminal characterized by. A location information management program that enables transmission and reception of information with a mobile terminal via a network,
The location information management program includes a computer,
Position information receiving means for receiving position information indicating the current position of the portable terminal from the portable terminal;
Distance calculating means for calculating a distance between the portable terminal and the other portable terminal using the received positional information on the portable terminal and the position information received from another portable terminal different from the portable terminal;
Judgment means for judging whether or not the other portable terminal is present within a predetermined range with respect to the portable terminal based on the calculated distance between the portable terminal and the other portable terminal;
Warning information to a predetermined destination when the quantity of the other portable terminal that is determined to be within a predetermined range with respect to the portable terminal becomes less than or less than a predetermined quantity Warning information transmission means for transmitting
Location information management device having
To function as a
A location information management program characterized by In the location information management program according to claim 11,
The location information management program further includes the computer,
The mobile terminal and the other mobile terminal belong to the same group;
Location information management device characterized by
To function as a
A location information management program characterized by In the location information management program according to claim 12,
The location information management program further includes the computer,
When the mobile terminal belongs to a plurality of groups, the other mobile terminal belongs to any one of the groups to which the mobile terminal belongs;
Location information management device characterized by
To function as a
A location information management program characterized by In the positional information management program according to claim 13,
The location information management program further includes the computer,
Group selection means for selecting a group to which the mobile terminal belongs based on the current time or / and the current position of the mobile terminal;
Location information management device having
To function as a
A location information management program characterized by In any one of the positional information management programs which concerns on Claims 11-14,
The location information management program further includes the computer,
Position request information generating means for generating position request information for requesting the mobile terminal to transmit position information indicating the current position;
Position request information transmitting means for transmitting the position request information to the portable terminal;
Location information management device having
To function as a
A location information management program characterized by In the location information management program according to claim 15,
The location information management program further includes the computer,
The position request information generating means includes
Including, in the location request information, authentication information indicating that the location information is generated by the location information management device;
Location information management device characterized by
To function as a
A location information management program characterized by A mobile terminal program that enables transmission and reception of information with a location information management device via a network,
The portable terminal program uses a portable terminal,
Position information acquisition means for acquiring position information indicating its current position at a predetermined time;
Position information transmitting means for transmitting the position information to the position information management device;
To function as a
A mobile terminal program characterized by A mobile terminal program according to claim 17,
The portable terminal program further includes the portable terminal,
Position request information receiving means for receiving the position request information;
Function as
The position information acquisition means further includes
Obtaining the position information upon reception of the position request information as the predetermined time;
To function as a
A mobile terminal program characterized by A portable terminal program according to claim 18,
The portable terminal program, the portable terminal,
The location request information receiving means further includes:
Receiving location request information having authentication information indicating that it is location request information generated by a predetermined location information management device;
Function as
Furthermore, the portable terminal is
Authentication means for determining whether the authentication information is correct or not;
Function as
The position information acquisition means further includes
Obtaining the location information upon receipt of the location request information having the proper authentication information;
To function as a
A mobile terminal program characterized by A location information management method using a computer that enables transmission and reception of information with a mobile terminal via a network,
The location information management method includes:
The computer generates position request information for requesting the mobile terminal to transmit position information indicating a current position;
The computer transmits the location request information to the mobile terminal;
The computer receives the location information from the mobile terminal;
The computer calculates a distance between the mobile terminal and the other mobile terminal using the received location information regarding the mobile terminal and the position information received from another mobile terminal different from the mobile terminal. ,
The computer determines whether the other portable terminal is within a predetermined range with respect to the portable terminal based on the calculated distance between the portable terminal and the other portable terminal;
When the quantity of the other portable terminal determined that the computer does not exist within a predetermined range with respect to the portable terminal becomes less than a predetermined quantity or smaller than a predetermined quantity, a predetermined transmission Sending warning information to the destination,
A location information management method characterized by the above.

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