JP2007193710A - Security system, security method and information terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a security system that predicts where and when children on their way home from school will be alone and notifies it in advance to guardians or school officials to prompt them to meet the children at the corresponding points and times. <P>SOLUTION: A cellular telephone 30A carried by a child A acquires position information about the child A from GPS (Global Positioning System) satellites, and substantially at the same time, a ZigBee (R) cell 40A acquires identification information, that is, MAC (Media Access Control) addresses, about ZigBee cell terminals 40B and 40C carried by children B and C present within some visible range. The acquired position information and MAC addresses are emailed to a remote monitoring server 60. According to the received position information and MAC addresses and to school route information represented by a tree structure corresponding to the MAC addresses, the monitoring server 60 predicts where and when each child will be alone, and emails it to each child's guardian. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a crime prevention system, a crime prevention method, and an information terminal for preventing a danger that a child is taken on a school road or harmed.

  There are frequent incidents in which children are looted or harmed on the way to school. Such incidents often occur while the child is acting alone. Conventionally, there are the following methods as countermeasures.

  The first to third measures rely on human hands. The first measure is for police to strengthen patrols in the district, children attending school with their guardians, and talking to each other with the cooperation of neighboring residents. The second countermeasure is a method of allowing children to go to school in groups. A third measure is to have the child carry an alarm device such as a security buzzer.

  The fourth to sixth measures use so-called IT (Information Technology). The fourth countermeasure is to disclose information on the suspicious person to a wide area network such as the Internet. As described in Non-Patent Document 1, the fifth measure is to install an IC (Integrated Circuit) tag on the school bag of a child and install a sensor that detects the presence of the IC tag on the school road. Each time a child passes through this base, a system is established in which an e-mail is sent to parents and school officials.

A sixth countermeasure is a method of causing a child to carry a mobile phone equipped with GPS (Global Positioning System) as described in Non-Patent Document 2. The mobile phone of the child who is going to and from school gets the current position from the GPS satellite and sends it in real-time by e-mail to a remote PC, etc. It is a technology that automatically sends alarm mails to parents and school officials automatically from a personal computer when an abnormal situation such as staying at the same point for a long time is detected.
NTT DATA, Inc., two other companies, “About the report on the results of the I-safety“ child watching service ”demonstration experiment”, [online], September 30, 2005, [Search January 16, 2006], Internet < URL: http://www.nttdata.co.jp/release/2005/093001.html> ITFOR Inc., “Mobile Phone GPS Child Security System“ Mima Mamoru ””, [online] December 12, 2005, [Search January 16, 2006], Internet <URL: http: // www .itfor.co.jp / solutions / retail / mimamoru / index.html>

  However, the first countermeasure requires manpower, and it is difficult to continue such a countermeasure permanently. The second measure is aimed at preventing the child from acting alone, but after breaking up with a friend in the middle of leaving school, the child becomes alone and at risk. In the third countermeasure, since the child who feels a crisis needs to operate the security buzzer, there is a possibility that the buzzer cannot be sounded by mistake during the crisis. Also, even if a buzzer sounds, it doesn't make sense if the sound is not so popular that it cannot reach a third party.

  The fourth measure has the complicated aspect of regularly checking suspicious person information, and can prevent damage even if parents and children know the suspicious person's information in advance. It's hard to say. In the fifth measure, since most of the e-mails sent to the parents are normal, as the measures take a long time, the attention of the guardians who confirm the e-mails becomes distracted, and the true abnormality There is a risk of not being aware of the situation.

  In the sixth measure, alarm mail is sent only after detecting abnormal behavior of the child. Therefore, even if the guardian takes action such as picking up the child after receiving the alarm mail, it will be late. There is a risk that it cannot be prevented from losing and harming the child. Moreover, if the child is performing group behavior, it is highly possible that the child is safe even if the child seems to be in an abnormal situation, and it is considered that a useless alarm mail is transmitted.

  The present invention has been made in view of such problems, and an object thereof is to provide a crime prevention system, a crime prevention method, and an information terminal that further improve the safety of children.

  In order to solve the above-described problem, the crime prevention system according to the present invention obtains position information of a predetermined point from a GPS (Global Positioning System) satellite or stores in advance a position information means that can wirelessly communicate from a predetermined point. A wireless first communication means for acquiring identification information of a person existing in the network, and a wired or wireless second communication means capable of communicating out of range, substantially at the same time Based on the information terminal in which the position information and the identification information are transmitted by the second communication means, the position information and the identification information received from this terminal, and the movement route information corresponding to each identification information, each identification information is included. Remote monitoring device for predicting the point and time when the person becomes alone.

  In order to solve the above-described problem, the crime prevention system according to the present invention is a position information means for acquiring position information of a predetermined point from a GPS satellite, and identification of a person existing within a range where wireless communication is possible from the predetermined point It has a wireless first communication means for acquiring information and a wireless second communication means capable of communicating out of range, and acquisition of position information and identification information is performed at substantially the same time. If the information terminal transmitted by the second communication means and the specific identification information cannot be received from this terminal, the location where the terminal owner exists is identified by the position information received from the terminal. Remote monitoring device.

  According to the present invention, firstly, parents and school officials can know in advance at the point and time when the child becomes alone, can pick up the child, and the safety of the child is more reliable. It will be something.

  According to the present invention, secondly, when a child is together with a friend, the warning is not given to the person concerned, but only when a child is detected to be alone, a warning is given to parents and school officials. give. Therefore, a guardian or a school official can receive a warning only when a situation that should truly be wary occurs, and can prevent the guardian's attention from being distracted.

  According to the present invention, thirdly, when a child is unfortunately lost, the last parted friend or parting point is identified, or a missing child is found In addition, it is possible to identify the first encounter and point of encounter, and use this information as a clue to elucidate the incident.

  Next, embodiments of the crime prevention system, crime prevention method and information terminal according to the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a block diagram of a first embodiment of a security system according to the present invention. Children who leave school 10 form a team and leave the group. This team is organized by multiple students who have a common school route. In the case of FIG. 1, a team is formed by three children A, B, and C who return homes 12A, 12B, and 12C. However, the number of teams is not limited as long as there are multiple people. In FIG. 1, illustration of the children themselves is omitted.

  These school routes are: Section 16 from School 10 to Point 14, Section 18 from Point 14 to Child B's House 12B, Section 22 from Point 14 to Point 20, and Point 20 to Child A's House It consists of a section 24 up to 12A and a section 26 from the point 20 to the child C's house 12C. Therefore, the school route can be expressed by a tree structure of graph theory in which the school 10 is a root, the branch points 14 and 20 are nodes, and the houses 12A, 12B, and 12C are leaves.

  In the case of FIG. 1, three children A, B, and C (not shown) who left school at the time of leaving school are together in the section 16, but in the section 18, the child B is alone. On the other hand, in the section 22, the children A and C are together, but in the sections 24 and 26, the children A and C are each independent. In such a section where a child is alone, there is a high risk that the child will be looted or harmed, so it is desirable to organize the team so as to minimize such a section.

  A mobile phone 30A shown in FIG. 1 is a mobile phone carried by a child A of the team, and ZigBee cell terminals 40B and 40C are wireless communication terminals carried by the children B and C, respectively. FIG. 2 is a block diagram of the mobile phone shown in FIG. The mobile phone 30A, for example, receives GPS position information such as longitude and latitude from a GPS (Global Positioning System) satellite, and identification information of others existing in a range 50 that can be wirelessly communicated by ZigBee. It has a ZigBee communication cell 40A to be acquired, and an e-mail transmission unit 44 having a wider range capable of wireless communication than the ZigBee communication cell 40A. As described above, the feature of this cellular phone is that it has two wireless communication means having different wireless communication ranges, namely, the ZigBee communication cell 40A and the e-mail transmission unit 44.

  Here, ZigBee (registered trademark) will be briefly described. ZigBee is one of the short-range wireless communication standards for home appliances. It is the same type of technology as Bluetooth (registered trademark) and is not suitable for sending large-capacity data such as image data at a lower communication speed than Bluetooth. The transmission distance is also as short as 10 to 50 meters, but it saves power and is low in cost. There are advantages. According to the ZigBee protocol, IEEE 802.15.4 is used as an interface of the media access layer, and a unique MAC (Media Access Control) address is assigned to each device that performs wireless communication by ZigBee. The ZigBee communication cell 40A can acquire the MAC address as identification information of the other ZigBee communication cell terminals 40B and 40C existing in the wireless communicable range 50.

  In the present invention, ZigBee is used as the first wireless communication means, and whether or not there are friends in a limited range 50 to the extent that the presence of each other can be recognized visually by using the narrowness of the wireless communication range. It is used for the detection. The wireless communicable range 50 is assumed to be a substantially circular area having a radius of about 5 m to 10 m. According to the transmission distance by ZigBee, it is possible to extend the transmission distance to a radius of about 50 m, but if the wireless communication range 50 is too wide, it will be recognized that even those who are leaving school separately are together, This is not preferable because safety cannot be maintained. On the other hand, sending MAC addresses that are attempted to be acquired by wireless communication with ZigBee, that is, whether there are friends, and information that identifies the friends when they are together, to the extent that wireless communication is possible This is not possible with a narrow ZigBee. Therefore, an electronic mail having a relatively wide wireless communication range that can transmit radio waves to at least the base station is provided as the second wireless communication means in the mobile phone 30A. Note that wireless communication means other than ZigBee and e-mail may be provided in the mobile phone as long as the two wireless communication means have different wireless communication ranges.

  The cellular phone 30A further includes a control unit 46, which is a device that controls the devices 42, 40A, and 44. Under the control of the control unit 46, the self-location information acquired by the GPS receiving unit 42 and the other person's identification information acquired by the ZigBee cell 40A, that is, the MAC address, in principle, are acquired at substantially the same time. The The position information and identification information acquired in this way are sent to the e-mail transmission unit 44 via the control unit 46, and transmitted from the e-mail transmission unit 44 to the base station. Acquisition of own position information and other person's identification information may be performed continuously. For example, it may be performed periodically at intervals of about 1 minute to 5 minutes.

  Note that since the mobile phone 30A possessed by the child or the guardian is a mobile terminal, the location information is acquired by GPS. On the other hand, since the school and the residents of the people along the line described later are installed at fixed positions, the invariant position information may be held in advance. The mobile phone 30A further includes a sound source 48, which is a device that outputs various warning sounds as a buzzer under the control of the control unit 48.

  In the present embodiment, the mobile phone 30A is used, but this is not necessarily a mobile phone, and may be a PHS (Personal Handyphone System). In addition, as long as it has position information means such as the GPS receiving section 42 and wireless communication means having two types of wireless communication possible ranges of ZigBee cell 40A and e-mail transmitting section 44, a mobile phone, The PHS may not have the call function, and may be a portable information terminal such as a PDA (Personal Digital Assistance).

  FIG. 5 shows an embodiment of a portable information terminal 51 having the same function as the cellular phone 30A. An LED (Light Emitting Diode) 65 that can be lowered from the neck by the strap 61, is switched to the monitoring mode by the monitoring activation button 63, and emits light in a color indicating the mode may be provided. LED 65 is, for example, green when in school mode when going to and from school, yellow when in school mode that is not going to school but is in school, and when outside school If the child pulls the emergency string 59, the alarm mode is red. The terminal 51 does not have a call function, and includes a GPS receiver 42, a ZigBee cell 40D, a battery 53, a microphone 57, and a database 55.

  FIG. 6 shows autonomous monitoring information defined by the terminal 51 shown in FIG. In other words, the area defined by points P1 and P2 is a commuting area, and if GPS 42 detects that it has gone out of this area or uses emergency string 59, it will become high from ZigBee and microphone 57. Send warnings with power and high beats. The terminal 51 transmits location information obtained from the GPS 42 in a normal state.

  Please refer to FIG. 1 again. The first embodiment of the security system according to the present invention includes a monitoring server 60. The monitoring server 60 may be a personal computer or workstation installed in the monitoring center 62. FIG. 3 is a block diagram illustrating a configuration example of the monitoring server. The monitoring server 60 receives the location information acquired by the mobile phone 30A by the GPS receiver and the identification information of the other ZigBee cell acquired by the ZigBee cell 40A as an e-mail from the mobile phone 30A. It is a monitoring device.

  The monitoring server 60 includes a handset information database 64, in which the MAC addresses of all ZigBee cells owned by children, parents, or school officials of the school 10 are registered. The handset information database 66 includes team formation of all children and data representing the school route of each team as a tree structure. The handset device information database 64 may include a geographic information system (GIS), and the above-mentioned school route data may be mapped to GIS and managed. This is because each node of the tree structure can be managed as a place name that is easy to understand for parents such as “XX intersection”. In addition, the average walking speed of the child may be recorded in the handset information database.

  The monitoring server 60 checks whether or not the e-mail from the mobile phone 30A includes the other person's identification information, that is, the MAC address. It is determined whether or not it is the MAC address of a person who can be regarded as a friend of Child A, such as a child of school 10 such as those of a parent or a parent or a school official, and whether the child is acting alone or in a group An analysis filter 66 for determining is included. The analysis filter 66 receives the registered MAC address from the handset information database 64 in order to make this determination. If the e-mail contains a MAC address but is not from a school official, the child is determined to be alone.

  The monitoring server 60 has a pick-up point / time prediction unit 68. This is because when the MAC address contained in the email is determined to be from a school official and the analysis filter determines that the child is acting as a group, the point where the child will be alone in the future This is a part for predicting the time. This prediction is based on the GIS based on the commuting route information, which is represented by the tree structure and mapped to the GIS, the average walking speed of the children, and the GIS of all the teams to which the children with the MAC address of the ZigBee cell 40A of the mobile phone 30A belong. The road distance is obtained from the handset information database 64.

  The prediction by the pick-up point / time prediction unit 68 may be performed using past information. For example, there are a first point and a second point, and the position information of the second point is acquired from a GPS satellite or stored in advance, and wirelessly transmitted from the second point by ZigBee at substantially the same time. Get the MAC address of the person who exists within the communicable range. Next, the position information of the second point and the MAC address information of the person existing within the above range are transmitted by wired or wireless communication means capable of communicating outside the wireless communicable range. For example, e-mail or a telephone line may be used.

  When a common one is included in each of these acquired MAC addresses, the moving speed obtained from the moving distance and moving time from the first to the second point can be calculated. By using this instead of the average child's moving speed, a more accurate prediction is possible.

  In the case of the embodiment of FIG. 1, if children A, B, and C are leaving school as a group, the email sent from the mobile phone 30A includes the MAC address of child A and the MACs of children B and C. Since the address is included, it is first confirmed that the entire team is available. Even if a group is formed, if someone on the team is absent, the point at which each child becomes independent also changes. Next, the tree structure is searched from the school 10 corresponding to the root portion of the tree structure. Then, since it is understood that the child B becomes alone at the point 14, the team arrives at the point 14 based on the position information included in the e-mail transmitted from the mobile phone 30A and the average walking speed of the child. The time can be predicted. The pick-up point / time prediction unit 68 sends the predicted point / time to the parent of the child B by mail, and prompts the point 14 to pick you up at the predicted time.

  Similar to the above, predict the arrival time of the team at the point 20 and the point 20 where the children A and C will be alone, send an email to the guardian of each child, and come to the point 20 at the predicted time Encourage you. The mobile phone 30A may repeatedly send e-mails to the monitoring server 60 during school leaving, for example, at regular intervals. Thereby, even if the walking speed of the child is not average for some reason, the prediction accuracy is improved by adopting the subsequent prediction result.

  As in this embodiment, a child having a mobile phone is preferably a child who remains in the group until the end of the team, such as child A, and is separated from the group on the way, such as child B, alone. It is not desirable to have a mobile phone for children who are in a state. This also means avoiding a rise in costs caused by distributing mobile phones that are more expensive than ZigBee cell terminals to everyone, but that children who have mobile phones with GPS functions and email transmission functions remain in the group to the end. This makes it possible to predict the pick-up point and time for all children.

  The first embodiment of the security system according to the present invention configured as described above operates as follows. That is, the mobile phone 30A possessed by the child A of the team that has started leaving school acquires its location information using the GPS receiver 42 at least once, including immediately after leaving school. At substantially the same time, the ZigBee cell 40A communicates with the ZigBee cell terminals 40B and 40C of the children B and C who are friends in the group leaving school and are in the wireless communicable range 50. The MAC addresses of the cell terminals 40B and 40C are acquired. The position information and the MAC address acquired in this way are transmitted to the monitoring server 60 by the e-mail transmission unit 44.

  In the monitoring server 60, the analysis filter 66 determines whether the child A remaining in the group is in the single action or the collective action. If it is determined that the group is in group action, the pick-up point / time prediction unit 68 uses a tree structure to indicate the point where the child who is currently in the group will be alone and the time of arrival. Use to predict. The predicted location / time is mailed to the parents of each child, and the parents are urged to pick up the children at the predicted location / time.

  FIG. 4 is a block diagram of a second embodiment of the security system according to the present invention. The configuration up to the point where the guard point / time prediction unit 68 of the monitoring server 60 informs the guardian of the point / time to be picked up in advance may be the same as in the first embodiment. Only differences from the first embodiment will be described below. This embodiment is different from the first embodiment in that all the children A, B, and C belonging to the team at the group school have mobile phones. The mobile phones 30B and 30C shown in FIG. 4 are respectively owned by the children B and C, and their configuration may be the same as the configuration of the mobile phone 30A shown in FIG. Further, the mobile phone 30D is owned by a parent D (not shown) of the child A. This may be the same as the configuration of the mobile phone 30A.

  The feature of the second embodiment is to cope with a case where a child suddenly becomes alone for some reason. Since all the children have mobile phones, according to the present embodiment, the child who suddenly became alone is informed by the monitoring server 60 that his / her own mobile phone is in a single state. Can let you know. This will be specifically described below.

  FIG. 4 shows a case where the child C is absent and leaves the school with only the children A and B on the team. If children A and B leave school together in section 16, the time of arrival at the point 14 where the two will separate is predicted by the monitoring server 60 and sent to the two parents by e-mail and picked up in advance. Should encourage parents.

  However, in the middle of section 16, it is assumed that child B has left something at school. In such a case, it is safe for children A to return to school together with child B who has left behind, but child B returns child A first, returns to school alone, and child A suddenly It can happen enough to be in a single state.

  In this case, the e-mail transmitted from the mobile phone 30A to the monitoring server 60 includes only the position information of the child A and the MAC address of the child A himself, and includes the MAC address that is the identification information of the other person. Therefore, the analysis filter 66 of the monitoring server 60 determines that the child is acting alone. Further, even if the MAC address other than the child A is included in the e-mail, if the MAC address does not belong to the school staff, the analysis filter 66 determines that the child is acting alone. In such a case, the abnormality determination unit 70 described below functions.

  As shown in FIG. 3, the monitoring server 60 has an abnormality determination unit 70. This is a part that gives a warning to a parent or a school official when the analysis filter 66 determines that a child is acting alone. The abnormality determination unit 70 is a part that detects abnormal behavior of the child from the position information of the child who is acting alone, and gives a warning indicating that the degree of danger is higher to the guardian or school personnel.

  When the abnormality determination unit 70 receives the information that the child is alone from the analysis filter 66 and the location information and school route information of the child, the child A immediately acts as a parent or guardian at school. The position information is transmitted as a first-stage warning mail. This “first-stage warning mail” is a warning mail sent when a child enters a single state. Further, the warning mail may be sent to the mobile phone 30A carried by the child A to call attention to the child A himself / herself. At that time, a buzzer sound indicating a warning may be emitted from the sound source 48 of the mobile phone 30A to alert the child. In this way, in the present invention, the guardian's attention is prevented from being distracted because the guardian is informed and warned only while the child is acting alone.

  The monitoring server 60 further has a log 75. The log 75 is a storage device, and records all the contents of the email received by the analysis filter 66. For example, when the MAC address of the other person included in the continuously received e-mail is not included in the e-mail at a certain time, the analysis filter 66 determines that the child is alone. However, all e-mail contents that have been continuously received are recorded in the log 75, and the child's location information and other person's MAC address obtained at the same time immediately before the child becomes alone are also recorded. Log 75 is recorded. In the case of the second embodiment, the log 75 records the MAC address of the child B who was together just before the child A became alone and the location information indicating the point where the children A and B were together. Has been. These recorded information identifies, in the case of unfortunate loss of child A, the other who was acting together just before child A was alone and the point where the child A separated. , Can be used as a clue to elucidate the incident.

  The log 75 also records the child's location information and the MAC address of the other person acquired at the substantially the same time after the child became alone. This identifies the other person the child who was acting alone first encountered and the point of encounter with the other person. Such information can also be used as a clue when you want to verify what happened after the child returned safely. In the second embodiment, it is assumed that the child C who was absent happens to be in a hospital (not shown) near his home. Then, as shown in FIG. 4, when the child A who has become alone in the section 16 passes through the section 22 and arrives at the point 20, the wireless communication range of the mobile phone 30 </ b> C carried by the child C is reached. Entering 80, they can exchange MAC addresses with each other. Therefore, it is recorded that the friend whom the child A who was in the single state first encounters is the child C, and the point 20 is encountered.

  The monitoring server 60 further includes a monitoring rule database 100. This is a database that provides a rule when the abnormality determination unit 70 determines whether or not a child who is acting alone is further abnormal. In the monitoring rule database 100, for example, a rule may be recorded that a child is determined to be abnormal if he or she deviates from the school road by how many meters or more. This is a rule that assumes the case where a child is looted by a malicious person. Alternatively, a rule may be recorded in which the position information of the child is continuously acquired and it is determined that the child is abnormal if the child moves at a speed of several meters per hour. This is a rule that assumes the case where a malicious person takes a child away by means of moving means such as a car. In addition, a rule may be recorded in which child position information is continuously acquired and an abnormality is determined if the child stays in one place for several minutes. This is a rule that assumes a case where a child is threatened by a malicious person, or is taken over and only the mobile phone 30A is abandoned.

  Further, the monitoring rule database 100 may record a rule that is determined to be abnormal when an e-mail itself that should be periodically transmitted from a child cannot be received. This is based on the assumption that the portable information terminal of the child is stolen or destroyed. In this case, it is desirable to urge the concerned person to search for the child based on the position information included in the recently received e-mail recorded in the log 75. The e-mail sent from the child may include the remaining battery level of the child's mobile phone. Thereby, the abnormality determination unit 70 can know in advance whether the reason why the e-mail from the child cannot be acquired is simply due to the battery being exhausted or other reasons. As a result, a more accurate determination is made that it is determined that the mobile phone has been abnormally taken away or destroyed only when the e-mail cannot be received despite the battery condition being good. Will be done.

  When the abnormality determination unit 70 determines that there is an abnormality in accordance with the monitoring rules recorded in the monitoring rule database 100, the first information about the position where the child A is performing an abnormal action is given to the parent or guardian. It is sent as a warning email for the second stage, which is more dangerous than the stage. Further, the second-stage mail may be sent to the mobile phone 30A carried by the child A to call attention to the child A himself / herself. At this time, a buzzer sound indicating a second-stage warning may be emitted from the sound source 48 of the mobile phone 30A to alert the child. The buzzer sound is preferably a voice for asking for help from people around the mobile phone 30A. This is because the child may be looted or harmed. In addition, when such a buzzer sounds, the child knows that his / her behavior is determined to be abnormal, and realizes that he / she should go straight home as usual to eliminate misunderstandings. it can.

  As described above, in the second embodiment of the present invention, the position information of a child who has become alone is continuously transmitted to a guardian or the like, and protection is performed only while the child's single state continues. Alert the person. When child A encounters a friend on the way or arrives safely near home 12A, wireless communication range 80 of mobile phone 30C or 30D owned by child C or parent D of child A 80 Or 90, that is, when the child A enters the safety zone, the warning is released.

  Through the first and second embodiments, the analysis filter 66, the pick-up point / time prediction unit 68, and the abnormality determination unit 70 in the monitoring server 60 are all in the CPU (Central Processing Unit) 110 of the monitoring server 60. However, these parts may be realized as hardware.

  The second embodiment of the security system according to the present invention configured as described above operates as follows. Since the prediction of the point / time when the children A and B of the team that has started leaving the school is independent is the same as in the first embodiment, the description thereof is omitted. In this embodiment, not only the child A but also the child B carries the mobile phone. Therefore, after the children A and B leave the school 10, each of the mobile phones 30A and 30B acquired at substantially the same time. The own location information and the MAC address of the friend are transmitted to the monitoring server 60 continuously or periodically at intervals of about 1 to 5 minutes. In this embodiment, the mobile phone 30A of the child A transmits the MAC address of the ZigBee cell 40B of the mobile phone 30B of the child B to the monitoring server 60, and the ZigBee of the mobile phone 30A of the child A is transmitted from the mobile phone 30B of the child B. The MAC address of the cell 40A is transmitted to the monitoring server 60, and it is confirmed that the children A and B are acting together.

  If only the child B suddenly returns to school in the section 16, the MAC address of the child B is not included in the e-mail transmitted from the child A continuously or periodically. Then, in the monitoring server 60, the analysis filter 66 determines that the child A is in a single action state, and the abnormality determination unit 70 is activated. The abnormality determination unit 70 immediately transmits information on the position where the child A is acting alone as a first-stage warning mail to a parent or a school official. Also, the first stage warning mail may be sent to the mobile phone 30A carried by the child A to alert the child A himself. As a result, parents and guardians can go to pick up the child A at the position where the child A is acting alone, and the child A goes to school while being aware that he is in a single-action state. be able to.

  On the other hand, it is recorded in the log 75 of the monitoring server 60 that the child A was the child B together with the child A last. If child A is missing, this information can be used as a clue to help clarify the incident.

  When the child A arrives at the point 20, the wireless communication range 80 of the mobile phone 30 </ b> C of the child C who is a friend enters the ZigBee communication, and the e-mail sent from the child A C's MAC address is included. As a result, the monitoring server 60 determines that the child A has entered the safety zone, and stops the transmission of the first-stage warning e-mail that has been transmitted to the parents, school personnel, and the child A. In addition, it is also recorded in the log 75 that the friend whom the child A first encountered after the child A becomes alone is the child C and the place where the encounter has occurred is the point 20. This information is also used as a clue to elucidate the case when, for example, an incident occurs in which the child A was missing on the way home but eventually encountered the child C and returned home safely. . Furthermore, as long as the mobile phone 30A is turned on without being destroyed, the mobile phone 30A continuously sends e-mails to the monitoring server 60. In principle, the e-mails always include location information using GPS. Therefore, even if only the mobile phone 30A is abandoned, at least only the location of the mobile phone 30A is found.

  When child A enters section 24 from point 20, child A becomes alone again, and the first-stage warning email is sent from monitoring server 60 to the parties concerned and child A himself, but safely close to home 12A. Upon arrival, the wireless communication range 90 of the mobile phone 30D possessed by the parent D of the child A is entered. As a result, the monitoring server 60 determines that the child A has entered the safety zone again, and the first-stage warning mail that has been transmitted to the parents, school personnel, and the child A is not transmitted.

  The ZigBee cell 40A and the like described in the first and second embodiments so far can acquire each other's identification information, that is, a MAC address and the like by using a beacon. In the beacon mode, a ZigBee cell that emits a beacon is called a coordinator in the text, and emits a beacon in a range where wireless communication is possible. The ZigBee cell on the side that does not emit a beacon is called a device in the text and receives a beacon from the coordinator. Thus, the coordinator and the device that transmit and receive beacons can exchange identification information with each other.

  The coordinator can communicate outside the wireless communication range by ZigBee using the communication means of the original e-mail wireless system. In addition, a coordinator in a fixed place such as a school can communicate outside the wireless communication range by ZigBee by a wired communication means using a telephone line or the like. In addition, the coordinator can acquire the position information of the coordinator by causing the GPS receiving unit that it originally has to function. In the case of a coordinator installed along a school or a school route, it may hold its own position in advance.

  On the other hand, even if the device has the wireless / wired communication means and the GPS function as described above, the device does not function, and the function is represented on behalf of the coordinator. The device only functions on its own ZigBee cell and on the side that receives the beacon from the coordinator.

  In the first and second embodiments, only the MAC address unique to each ZigBee cell is used as identification information. However, in the third and subsequent embodiments, PAN-ID is further used as identification information lower than the MAC address. (Personal Area Network IDentification) will also be introduced. In this embodiment, it is assumed that the school road gives the same PAN-ID to the friends who are together.

  The mobile phones possessed by the school 10, the children A to C, and the guardian D all have the same configuration as that shown in FIG. 2, but may be a coordinator in some situations, especially while acting alone. You can also be a device when you are in groups with other people. On the other hand, the mobile information terminal installed in the residents along the school route has the same configuration as the mobile phone shown in FIG. 2, but it can only be a device that does not emit a beacon. Only monitoring.

  According to the ZigBee specification, in the beacon mode, the coordinator is allowed to be the only one of all ZigBee cells that exist within the wireless communication range. And the only cell under this coordinator is the device. The device communicates with the coordinator as necessary.

  However, multiple coordinators may meet, and in that case, a new unique coordinator will be decided. The state that determines the only coordinator is called a race condition.

  FIG. 7 is a schematic diagram showing a third embodiment of the crime prevention system according to the present invention, and is a diagram showing that a mobile phone having the same configuration becomes a coordinator or a device. All of the mobile phones 71, 73, and 75 in the state 79 have the same configuration as the mobile phone in FIG. 2, and only the coordinator 75 that emits a beacon is represented by a picture of the mobile phone. The telephones 71 and 73 are devices. Assume that mobile phones 71, 73, and 75 consisting of a group of three people encounter a new mobile phone 77 in state 81 during the course of school. These mobile phones all have the same school route represented by a tree structure. Then, all of these mobile phones have the same PAN-ID. Therefore, the telephones 75 and 77 that were coordinators until then compete.

  One method of resolving conflicts and determining a new unique coordinator is conflict resolution by class attributes. For example, when the competing person is a person having different class attributes such as a school telephone and a child telephone, the coordinator is determined in the priority order of school> guardian> child. On the other hand, it is a method for resolving competition between persons belonging to the same class, such as a guardian or a child's terminal, and is performed by giving each terminal a slightly different delay characteristic.

  In FIG. 7, the mobile phones 75 and 77 of the children compete with each other, and the phone 75 that has lost the conflict resolution shifts to a device as shown in a state 83, and only the phone 77 is the coordinator in the group.

  The coordinator keeps track of peers in the range where wireless communication by ZigBee is possible, that is, those who have the same PAN-ID, and uses wireless communication means such as e-mail or wired communication means using a telephone line, etc. Information relating to identification information, time, position, status, etc. can be notified to the remote monitoring server 60. In addition, information from the monitoring server 60 can be received and notified to subordinate devices as necessary.

  The school coordinator needs to know that a group of friends with a specific PAN-ID has arrived safely at the school and report it to the monitoring server. A child who has arrived at the school may be powered off by an application while in the school because he / she is under the supervision of the school information terminal. (Called soft power-off on personal computers). This prevents useless radio waves from flying when in the school.

  On the other hand, when leaving the school, there is a coordinator that emits a beacon near the gathering team with a specific PAN-ID and powers on nearby. The school coordinator can grasp the group of children with the same PAN-ID as friends who come home together today and report them to the monitoring server 60. At this time, information such as a dangerous area may be transferred to each friend through the school coordinator. When you leave the beacon area of the school coordinator, one of your friends becomes the coordinator that sends out the beacon.

  When the mobile phone exits the beacon area of the coordinator, if there is a fellow mobile phone in the vicinity, one of them becomes the coordinator. Also, when you are alone, you become the coordinator. FIG. 8 is a fourth embodiment of a security system according to the present invention. As shown in state 85, it is assumed that the group originally went to school by five friends. As shown in the map 91, it is assumed that the group is divided into two small groups at a point 99, and becomes a group of three people shown in the state 87 and a group of two people shown in the state 89. In any of the small groups, in the state 89 where the coordinator 75 is not present, the mobile phones 95 and 97 compete with each other. As shown in the state 93, for example, the telephone 97 becomes the coordinator. As described above, the device can have a function of becoming a coordinator. When the device loses sight of the coordinator, the device can autonomously shift to the coordinator. Further, when the telephones 95 and 97 are separated, the device 95 becomes a single device, so that itself becomes a coordinator.

  The ZigBee cell terminal 40B and the like shown in FIG. 1 can be a coordinator that emits a beacon when used alone, but other wireless / wired communication that allows communication outside the ZigBee wireless communication range. Does not have means or GPS function. Therefore, even when an abnormality or the like occurs in the self, the position information of the self cannot be transmitted to the monitoring center 60.

  On the other hand, a terminal that is fixedly installed at the home of a commuter road inhabitant, etc. cannot be a coordinator that emits a beacon, but a beacon emitted by a ZigBee cell terminal in the coordinator state that is acting alone near its own location, Abnormality of the cell can be detected. Furthermore, if the terminal along the line has wireless / wired communication means, the monitoring server 60 can be notified of the abnormal situation.

  FIG. 9 is a schematic view showing a fifth embodiment of the crime prevention system according to the present invention. When the ZigBee cell 40B that does not have GPS or e-mail transmission function is the coordinator alone, the terminal 101 along the line that detects the beacon that is emitted from the cell 40B stays in one place for a long time, or the cell 40B If cell 40B exists in an area other than the school district based on the autonomous monitoring information of the child, or if it exists in an area where children are prohibited from entering, cell 40B may pull an emergency string, etc. When an abnormality is detected such as requesting help, the remote monitoring device 60 can be notified of the abnormality by the wired communication means 103. The communication means included in the terminal 101 along the line may be a wireless communication means, and the speed of the vehicle is slowed down by a traffic light or the like so that the location of the terminal can be detected even when a child is roughly taken by the car. It is a point.

  On the other hand, the cell 40B alone may have means for expanding the communication area (intensifying radio waves) in consideration of when the emergency string or the like cannot be operated by the child and is likely to be taken away by a car or the like. Specifically, the communication area can be increased by increasing the output of the battery. Furthermore, the beacon transmission timing may be shortened in consideration of high-speed movement.

  The coordinator and the terminal along the line can download information on the dangerous part of the school road from the monitoring server 60 by wireless / wired communication means. Based on the GPS position information, it is possible to teach the child with intermittent sounds or the like that he / she is at a dangerous location until he / she reaches the device under his / her umbrella.

  Upon receiving such information, for example, the cellular phone 30A shown in FIG. 2 can change the buzzer warning sound according to the degree of danger. The information regarding the dangerous spot is, for example, a section requiring attention due to the appearance of a suspicious person.

  In the unlikely event that a child is looted, searching for a mobile phone that the child had could get a clue to clarify the case. Specifically, a child's mobile phone is searched for in possession of an information terminal that has the same PAN-ID as the ZigBee PAN-ID possessed by the abbreviated child. If the mobile phone of the child is turned on, the abandoned mobile phone may be found early.

  However, early exploration is required because of the remaining battery capacity (high power, high beat). For this purpose, as described in the second embodiment of the present invention, the information on the point to which the person has been with is important. Needless to say, it is better to search with as many mobile terminals as possible when searching.

  As mentioned above, each Example of this invention demonstrated the system which improves the safety | security of a child. The purpose of the system according to the present invention is to reduce the burden on related persons (guardians, school personnel, monitoring personnel, etc.) by using the monitoring of school routes as IT. The effectiveness of this system is limited to predicting and detecting a child's individual behavior, detecting an abnormal behavior of a child, and providing relevant information to related parties. It cannot be guaranteed. It is highly desirable to have the relevant parties cooperate, such as parents who promptly pick up children who are acting alone or abnormally.

It is a block diagram of the 1st Example of the crime prevention system by this invention. It is a block diagram of the mobile phone shown in FIG. It is a block diagram which shows the structural example of the monitoring server shown in FIG. It is a block diagram of the 2nd Example of the crime prevention system by this invention. It is an external view which shows the Example of the information terminal by this invention. It is the autonomous monitoring information defined by the terminal shown in FIG. It is a schematic diagram which shows the 3rd Example of the crime prevention system by this invention. It is a schematic diagram which shows the 4th Example of the crime prevention system by this invention. It is a schematic diagram which shows the 5th Example of the crime prevention system by this invention.

Explanation of symbols

30A, 30B, 30C mobile phone
40A, 40B, 40C ZigBee cell
42 GPS receiver
60 Monitoring server

Claims (18)

Position information means for acquiring position information of a predetermined point from a GPS (Global Positioning System) satellite or holding it in advance, and a wireless method for acquiring identification information of a person existing within a wireless communicable range from the predetermined point 1 communication means and wired or wireless second communication means capable of communication outside the range, and the position information and identification information at substantially the same time are transmitted by the second communication means. An information terminal to be transmitted,
A remote monitoring device that predicts a point and time at which a person having each piece of identification information becomes independent based on position information and identification information received from the terminal and movement route information corresponding to each piece of identification information A crime prevention system. Position information means for acquiring position information of a predetermined point from a GPS satellite, first wireless communication means for acquiring identification information of a person existing within a range in which wireless communication can be performed from the predetermined point, and the range An information terminal having wireless second communication means capable of communication to the outside, wherein the acquisition of the position information and identification information is performed at substantially the same time and transmitted by the second communication means;
And a remote monitoring device for identifying a point where the owner of the terminal is present alone based on position information received from the terminal when specific identification information cannot be received from the terminal. system. Position information means for preliminarily holding position information of a predetermined point, first wireless communication means for acquiring identification information of a person existing within a wireless communication range from the predetermined point, and out of the range A wired or wireless second communication means capable of communication, and an information terminal in which the position information and identification information are transmitted by the second communication means;
Remote monitoring for identifying a point where a person having the unique identification information exists by the positional information received from the terminal when the identification information received from the terminal is unique other than that of the terminal A security system characterized by including a device. The system of claim 2, wherein
When the remote monitoring device cannot receive specific identification information from the terminal, it records the position information and specific identification information that were recently received from the terminal at substantially the same time,
Accordingly, a crime prevention system characterized in that a friend / point that has acted together immediately before the owner of the terminal becomes alone is identified. The system of claim 4, wherein
The remote monitoring device records the position information and the specific identification information at substantially the same time first received from the terminal after the specific identification information cannot be received from the terminal,
In this way, the crime prevention system is characterized in that the friend / point that the owner of the terminal alone encountered first is identified.   6. The security system according to claim 2, wherein the remote monitoring device detects an abnormal situation from position information continuously received from the terminal.   The system according to any one of claims 1 to 6, wherein the first communication means is realized by ZigBee (registered trademark). Position information means for acquiring position information of a predetermined point from a GPS satellite or holding in advance;
A wireless first communication means for acquiring identification information of a person existing within a wireless communicable range from the predetermined point;
A wired or wireless second communication means capable of communication outside the range,
The position information and identification information at substantially the same time are transmitted by the second communication means,
Thereby, the information terminal transmits the predetermined point and the presence / absence of a person who is present at the point. The information terminal according to claim 8, wherein
The information terminal characterized in that the position information means and the second communication means stop functioning when there is a specific one among the identification information. In the information terminal according to claim 8 or 9,
An information terminal characterized in that the range of the wireless communication range of the first communication means can be adjusted. The information terminal according to any one of claims 8 to 10,
An information terminal characterized in that the first communication means continuously acquires the identification information, and the frequency of the acquisition is adjustable. Obtaining position information of the first point from a GPS satellite or pre-holding;
A first acquisition step of acquiring identification information of a person existing within a wireless communicable range from the first point by a wireless first communication means at substantially the same time as the step;
Transmitting the position information of the first point and the identification information of a person existing within the range by a wired or wireless second communication means capable of communication outside the range;
Based on the transmitted position information of the first point, the identification information of the person existing in the range, and the travel route information corresponding to each identification information, the point and time when the person having each identification information becomes independent A crime prevention method comprising the step of predicting The method of claim 12, further comprising:
Obtaining position information of the second point from a GPS satellite or holding in advance;
A second acquisition step of acquiring identification information of a person existing within a wireless communicable range from the second point by a wireless first communication means at substantially the same time as the step;
Transmitting the position information of the second point and the identification information of the person existing within the range by a wired or wireless second communication means capable of communication outside the range;
When common information is included in the identification information acquired in both the first and second acquisition steps, the transmitted location information of the second point and identification of persons existing within the range A point and time when a person having each piece of identification information becomes independent based on the information, the movement route information corresponding to each piece of identification information, and the movement speed obtained from the movement distance and movement time from the first to the second point. A crime prevention method comprising the step of predicting Pre-holding position information of a predetermined point;
A step of acquiring identification information of a person existing within a range in which wireless communication can be performed from the predetermined point by a first wireless communication method;
Transmitting the position information and the identification information by a wired or wireless second communication means capable of communicating outside the range;
And a step of identifying a point of a person who exists by itself based on the transmitted position information when there are two pieces of transmitted identification information. Obtaining position information of a predetermined point from a GPS satellite;
A step of acquiring identification information of a person existing within a wireless communicable range from the predetermined point by a wireless first communication means at substantially the same time as the step;
Transmitting the position information and identification information by wireless second communication means capable of communicating outside the range;
And a step of detecting the presence of a single person at a predetermined point having the position information when there is no specific information in the transmitted identification information. The method of claim 15, wherein the method further comprises:
Recording the recently received position information and specific identification information at substantially the same time when there is no specific one among the transmitted identification information,
Thus, a crime prevention method characterized by identifying a friend / point that was acting together immediately before the person existing at the predetermined point becomes alone. The method of claim 16, wherein the method further comprises:
Recording the position information and the specific identification information received at substantially the same time first after the specific information is lost in the transmitted identification information,
Accordingly, the crime prevention method is characterized in that the first person / person who has been acting alone at the predetermined point is identified. The method according to any of claims 12, 13, 15 to 17, further comprising:
The crime prevention method characterized by including the process of detecting an abnormal condition from the said positional information received continuously.