Lead support system

Abstract

To provide a lead support system capable of easily performing a monitoring in order to generating a stray child and a missing person in the case of leading a lead object as a plurality of lead persons.SOLUTION: A lead support system comprises: one or more fixing transmitters; a plurality of mobile transmitters; a plurality of portable radio terminals; and a leading support server that provides a display device and a storage device, and displays information for supporting lead to the display device that receives a radio signal from each portable transmitters. In the storage device, identification information of each mobile transmitter portable to a lead packet is previously registered. The lead support server determines that a portable radio terminal that transmits the identification information of the fixing transmitter or the movable transmitter is one to be monitored, and determines that the plurality of portable transmitters that transmits the identification information of a predetermined fixing transmitter and the plurality of mobile transmitters corresponded to the identification information contained in the transmission signal from the portable radio terminal is belonged to the same monitoring group.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a chaperone support system that can easily check the number of people being chaperoned (chaperoned) without having to conduct roll calls, etc., when taking kindergarten children for a walk or leading students on a school trip. [Background technology]

[0002] Generally, when kindergarten children are out on a walk or on a school trip, the leader takes a roll call to check the whereabouts of the members of the group. The roll call is conducted by periodically gathering the group members together, but the leader must always be aware that everyone is present even during travel or free time, and must be careful not to lose anyone. However, it is difficult to keep an eye on everyone while leading a group, and the more people in the group, the higher the chance of losing someone. Also, when leading kindergarten children, it is practically impossible to keep track of the whereabouts of all the children when they are playing games such as hide-and-seek.

[0003] Conventional technologies related to chaperones include an invention of a chaperone management system that allows easy confirmation of the number of people on a group trip by having travelers carry wireless IC tags and reading the information on the wireless IC tags using a wireless mobile terminal carried by the chaperone (see, for example, Patent Document 1). Also, an invention of a chaperone support system has been proposed that allows chaperones to carry beacons and receive radio waves from the beacons using a wireless terminal carried by the chaperone, thereby reducing the possibility of the chaperones getting lost (see, for example, Patent Document 2). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2006-54787 A [Patent Document 2] JP 2020-188325 A Summary of the Invention [Problem to be solved by the invention]

[0005] The chaperone management system described in Patent Document 1 has the advantage of being able to easily check the number of people being chaperoned without having to call each time. Also, the chaperone support system described in Patent Document 2 has the advantage that the wireless terminal can change the intensity of the radio wave and the frequency of communication based on the terminal location information, which allows for power saving of the beacon.

[0006] However, both the system described in Patent Document 1 and the system described in Patent Document 2 assume that there is only one chaperone, and do not describe a method for confirming the number of people when multiple chaperones lead a large number of chaperones, such as when kindergarten children are taking a walk. Therefore, when it is desired to divide the chaperones into multiple groups to correspond to multiple chaperones, there is a risk that appropriate chaperone cannot be performed. Specifically, when the chaperones are divided into multiple groups to correspond to multiple chaperones, during a move or free activity, a chaperone of one group may act together with a chaperone of another group, so the chaperones need to mutually confirm the whereabouts of the chaperones, which causes a problem of a large burden on the chaperones.

[0007] The present invention has been made in consideration of the above-mentioned problems, and its purpose is to provide a chaperone support system that can easily monitor a group of people to prevent them from getting lost or missing when multiple chaperones are leading a group of people. Another object of the present invention is to provide a chaperone support system that can reduce the burden on chaperones when it is necessary to divide the people to be chaperoned into multiple groups in order to accommodate multiple chaperones. [Means for solving the problem]

[0008] In order to solve the above problems, the present invention provides: One or more fixed transmitters that are installed in a specified area of ​​the escorting location and can transmit at least their own identification information by radio; A plurality of mobile transmitters carried by the persons to be guided and capable of wirelessly transmitting at least their own identification information; a plurality of portable wireless terminals each receiving wireless signals transmitted from the fixed transmitter and the mobile transmitter and wirelessly transmitting a signal including the identification information and its own terminal identification information contained in the received signal; a leader support server including a display device and a storage device, the leader support server receiving a wireless signal from the portable wireless terminal; In a supervision support system equipped with The storage device has registered therein identification information of the mobile transmitter carried by the person to be accompanied, The chaperone support server includes: The portable wireless terminal that has transmitted the identification information of the fixed transmitter or the mobile transmitter is determined to be the terminal being monitored, and multiple portable wireless terminals that have transmitted the identification information of a specific fixed transmitter and the multiple mobile transmitters that correspond to the identification information contained in the transmission signal from the portable wireless terminal are determined to belong to the same monitoring group, and information to support supervision is displayed on the display device or notified to the portable wireless terminal.

[0009] According to the above-mentioned configuration of the escort support system, by regarding the portable wireless terminals that have received the identification information of the same transmitting terminal installed in a specified area of ​​the escort location as belonging to the same group, even if the person to be escorted leaves the monitoring area of ​​the portable wireless terminal carried by the predetermined escort, if the person is in the monitoring area of ​​another portable wireless terminal in the same group, it can be determined that the person is under the supervision of the group. This makes it easy for multiple escorts to watch over the person, and makes it easy to watch over the person to prevent them from getting lost or missing.

[0010] Here, it is preferable that the storage device has registered therein in advance the identification information of the mobile transmitter and the individual information of the person to be accompanied who carries the mobile transmitter, The chaperone support server includes: The device is configured to determine whether the information transmitted from the multiple portable wireless terminals includes all of the identification information of mobile transmitters preregistered in the storage device, and if the identification information of a preregistered mobile transmitter is not included for a predetermined period of time or longer, to notify the multiple portable wireless terminals of the identification information of the mobile transmitter that is not included or the unique information of the person being led who carries that mobile transmitter. According to this configuration, if a person being supervised leaves the monitoring area, the supervising person can be notified of this, so that the supervising person can go looking for the person (kindergartener) who has left the monitoring area, thereby preventing the child from getting lost or whose whereabouts are unknown.

[0011] Preferably, the storage device has registered therein in advance identification information of the portable wireless terminal carried by the leader or unique information of the leader carrying the portable wireless terminal, The chaperone support server includes: If it is determined based on the received signal that there is a portable wireless terminal among the multiple portable wireless terminals determined to belong to the monitoring group that does not contain the identification information of a specified fixed transmitter for a specified period of time or more, the identification information of the portable wireless terminal that did not contain the identification information of the specified fixed transmitter or the unique information of the leader carrying the portable wireless terminal is notified to the multiple portable wireless terminals. With this configuration, if a chaperone leaves the monitoring area, the other chaperones can be informed of this, so that the other chaperones can continue to supervise safely by taking measures such as temporarily gathering together the people (kindergarteners) under their supervision.

[0012] Further, preferably, the chaperone support server displaying on the display device the statuses of the plurality of mobile transmitters that have been determined to belong to the monitoring group based on the information transmitted from the plurality of mobile wireless terminals; When the information transmitted from the plurality of portable wireless terminals does not contain identification information of a preregistered mobile transmitter for a predetermined period of time or longer, the display device is configured to display the identification information of the mobile transmitter that is not included or the unique information of the person to be accompanied who carries the mobile transmitter. According to this configuration, a third party other than the leader can watch over the children at a location away from the monitoring area, which makes it possible to more reliably prevent children from getting lost or unaccounted for.

[0013] Further, preferably, the chaperone support server Based on the information transmitted from the plurality of portable wireless terminals, if the transmission signals from the plurality of portable wireless terminals do not contain the identification information of a specified fixed transmitter for a predetermined period of time or longer, the display device is configured to display the identification information of the portable wireless terminal that does not contain the identification information of the specified fixed transmitter or the unique information of the leader carrying that portable wireless terminal. With this configuration, the monitoring situation can be grasped from a location away from the monitoring area, and if necessary, measures such as dispatching additional personnel can be taken, making it possible to provide safer supervision.

[0014] In addition, it is preferable that the storage device has registered therein in advance identification information of the plurality of portable wireless terminals carried by the leader, identification information of the mobile transmitters corresponding to the respective identification information, and unique information of the leader carrying the mobile transmitter, The chaperone support server includes: In response to an external request, the device is configured to determine that the multiple portable radio terminals and the mobile transmitters corresponding to each portable radio terminal belong to an individual group, and to determine whether the information transmitted from the multiple portable radio terminals contains identification information of a mobile transmitter of the same individual group that has been pre-registered in the storage device, and if the identification information of a pre-registered mobile transmitter is not included for a predetermined period of time or longer, to notify the portable radio terminals belonging to the corresponding individual group of the identification information of the mobile transmitter that was not included or the unique information of the person being led carrying that mobile transmitter. According to this configuration, when it is desired to divide the people to be accompanied into a plurality of groups in response to a plurality of leaders, the burden on the leaders can be reduced.

[0015] Furthermore, it is preferable that the portable wireless terminal is configured so that the threshold value of the radio wave intensity for detecting a signal from the fixed transmitter can be changed. According to this configuration, the size of the area to be monitored can be changed, making it possible to perform appropriate detection according to the structural risks of the monitoring location.

[0016] Furthermore, it is preferable to provide a repeater that is installed in the predetermined area and is capable of receiving a signal from the mobile transmitter and transmitting the signal to the leader support server. According to this configuration, the area to be monitored can be expanded without installing multiple fixed beacons within a specified area, so that monitoring groups can be easily set up on the supervision support server side. Effect of the Invention

[0017] According to the chaperone support system of the present invention, when multiple chaperones are leading multiple chaperones, it is easy to watch over the children to prevent them from getting lost or missing. In addition, when multiple chaperones are to be divided into multiple groups to lead multiple chaperones, it is possible to reduce the burden on the chaperones. [Brief description of the drawings]

[0018] [Figure 1] 1 is a system configuration diagram showing a schematic configuration example of a leadership support system according to an embodiment. [Diagram 2] 1 is an area configuration diagram showing the relationship between a monitoring group area centered on a station beacon and a monitoring area centered on a portable wireless terminal and a gateway in a leadership support system of an embodiment. [Diagram 3] 10 is a flowchart showing an example of a processing procedure in a portable wireless terminal constituting the leadership support system of the embodiment. [Figure 4] 11 is a flowchart illustrating an example of a processing procedure in a gateway constituting the leadership support system of the embodiment. [Diagram 5] 10 is a flowchart showing an example of a processing procedure in a leadership support server constituting the leadership support system of the embodiment. [Figure 6] 11 is an explanatory diagram showing an example of a group configuration in an individual monitoring mode in which a monitoring area is formed around a portable wireless terminal. FIG. [Figure 7] FIG. 13A is a configuration image diagram of an individual group in a modified example, and FIG. 13B is a diagram showing configuration examples of a group setting table, a portable wireless terminal setting table, a mobile beacon setting table, and a gateway setting table. [Figure 8] 13 is an explanatory diagram showing an example of a display on the screen of a display device in a leader support server constituting a leader support system of a modified example. FIG. [Figure 9] 13 is an explanatory diagram showing an example of a mode switching display screen of a portable wireless terminal constituting a modified example of a leader support system. FIG. [Figure 10] (A) and (B) are explanatory diagrams showing how the monitoring area changes when the size of the monitoring area is changed by changing the radio wave strength threshold at which a portable wireless terminal detects a beacon signal in a modified leadership support system. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] Hereinafter, an embodiment of a supervision support system to which the present invention is applied will be described with reference to the drawings. Fig. 1 is a block diagram showing an example of a schematic configuration of the supervision support system of this embodiment. The supervision support system shown in Fig. 1 assumes a situation in which kindergarten children are allowed to play in a relatively large space such as a park under the supervision of a supervising person.

[0020] As shown in Fig. 1, the chaperone support system of this embodiment includes a beacon (hereinafter, referred to as station beacon) 10 that is installed in the approximate center of the monitoring area and transmits predetermined information such as device identification information by radio waves, a mobile beacon 20 that is carried by a child K who is being chaperoned and transmits predetermined information by radio waves, a portable wireless terminal 30 that is carried by a chaperone L such as a childcare worker and can receive signals (radio waves) from the beacons 10 and 20, and a gateway (GW) 40 that is installed at any position in the monitoring area and serves as a repeater that can receive signals (radio waves) from the beacons 10 and 20. The predetermined information transmitted by the station beacon 10 and the mobile beacon 20 may include, in addition to device identification information, model identification information and organization identification information of the operating entity.

[0021] The station beacon 10 is also a portable device, but is installed at a predetermined position when the system is operated. The radio wave intensity emitted by the station beacon 10 is preferably set to be higher than the radio wave intensity emitted by the mobile beacon 20 carried by the child. Although only one station beacon 10 is shown in the supervision support system shown in FIG. 1, if the monitoring area has a rectangular or irregular shape in a plan view, multiple station beacons 10 may be installed at a predetermined distance apart. The communication method of the beacons 10 and 20 can be a known communication method such as Bluetooth (registered trademark) communication or wireless LAN such as WiFi conforming to the IEEE 802.11 standard.

[0022] The portable wireless terminal 30 and the gateway 40 have a function of receiving signals (radio waves) from the beacons 10 and 20, as well as a function of performing data communication with the leading support server 50 via a mobile phone base station WBS and a communication network NW such as the Internet. Note that a router or other repeater may be used instead of the gateway 40. Also, the portable wireless terminal 30 and the gateway 40 may be equipped with a GPS module and have a function of transmitting location information detected by the GPS to the leading support server 50.

[0023] In the supervisor support system shown in Fig. 1, only one gateway 40 is shown, but multiple gateways 40 may be installed in a dispersed manner within the monitoring area, or only one gateway with high reception sensitivity may be installed near the central station beacon 10. Also, if the monitoring area is a park, it is effective to install the gateway 40 near the entrance because the entrance is a place where there is a high risk of children going outside the park. If the monitoring area is not so large, the gateway 40 may be omitted.

[0024] The supervision support server 50 is connected to a display device 51 that displays information such as a map, and a database 52, and the database 52 prestores information on the portable wireless terminal 30, station beacon 10, and mobile beacon 20 to be supported, as well as map information on the area to be monitored. Here, the information on the mobile beacon 20 prestored in the database 52 may include the device identification information of the beacon, as well as the name of the child carrying the beacon. Similarly, the information on the portable wireless terminal 30 prestored in the database 52 may include the device identification information of the portable wireless terminal, as well as the name of the supervisor carrying the portable wireless terminal. In addition, dedicated application programs for implementing functions as will be described later are installed in the portable wireless terminal 30 and the leader support server 50.

[0025] FIG. 2 shows an example of the relationship between a monitoring group area centered on the station beacon 10 and multiple monitoring areas centered on the portable wireless terminal 30 and the gateway 40 in the leadership support system of the embodiment shown in FIG. 2, in the supervision support system of this embodiment, main monitoring areas MWA1, MWA2 by the supervision are formed by the beacon signal receiving function of the portable wireless terminal 30. In addition, an auxiliary monitoring area AWA is formed by the beacon signal receiving function of the gateway 40, and these multiple monitoring areas partially overlap each other and cover a wide range of the radio wave range GA of the station beacon 10, so that it is possible to remotely grasp in which area a child carrying a mobile beacon 20 is located, and monitoring of a child moving within the area is realized.

[0026] Furthermore, when the portable wireless terminal 30 is located within the range where radio waves from the station beacon 10 can reach, that is, within the radio wave range GA centered on the station beacon 10, it receives the beacon signal and functions as a device that performs a monitoring function. By configuring as described above, one watching group is formed with the station beacon 10 at the center. Hereinafter, the radio wave range GA of the station beacon 10 is referred to as the watching group area. Note that the size of the watching group area varies depending on the radio wave strength of the station beacon 10 and the receiving sensitivity of the portable wireless terminal 30.

[0027] Furthermore, in the supervision support system of this embodiment, each portable wireless terminal 30 and gateway 40 receives a signal from the mobile beacon 20 and determines that the child carrying the mobile beacon 20 is in one of the above-mentioned monitoring areas, and when the child carrying the mobile beacon 20 moves away from any of the above-mentioned monitoring areas, the server 50 detects this and notifies the portable wireless terminal 30 of the supervising teacher in charge. This makes it possible to avoid situations in which a child is not monitored for a long period of time.

[0028] The server 50 is also configured to store the information (beacon signal and device location information) received from each portable wireless terminal 30 and the gateway 40 as log data together with time information. As a result, when it is determined based on the received information that a child has left the monitoring area, the server 50 checks the log data to identify the device that last received a signal from the child's mobile beacon 20, and displays the location of that device or the name of the leader carrying the device on the screen of the display device 51. As a result, it is possible to provide a clue for searching for a child who has left the monitoring area.

[0029] Furthermore, when the server 50 determines that one of the chaperones has left the monitoring group area GA and that the mobile wireless terminal 30 of that chaperone is no longer able to receive signals from the station beacon 10, it is configured to notify all chaperones and the mobile wireless terminal 30 of the manager. This allows other chaperones to be informed that there is a chaperone who has left the area. In this case, it is considered that the chaperone has left the area to go and look for children, so this notification prompts the other chaperones to take measures such as temporarily gathering the children under their supervision, allowing them to continue leading the group safely. In addition, the manager can take measures such as sending support personnel to lead the group more safely.

[0030] Furthermore, in addition to the portable wireless terminal 30, the chaperone support system of this embodiment also has one or more gateways 40 installed within the monitoring group area GA, allowing for monitoring of a wider area that would be difficult to handle using only the portable wireless terminal 30 carried by the chaperone, making it possible to flexibly and safely supervise in a variety of situations, such as in places with poor visibility, in open spaces, or when leading older kindergarteners who are actively moving around.

[0031] Furthermore, the escort support system of this embodiment is configured so that the server 50 reads map information of the monitoring area from the database 52, displays it on the display device 51, and displays the monitoring area (radio wave reception range) of each portable wireless terminal 30 and gateway 40 on the map. This makes it possible to visually check whether the area to be monitored is covered by the system when planning before the escort or when leading. The target devices (station beacons and gateways) may be placed on the map manually, or may be placed using location information detected by the GPS function installed in the devices.

[0032] Next, an example of the processing procedure in the portable wireless terminal 30, the gateway 40, and the leader support server 50 constituting the leader support system of the above embodiment will be described in order with reference to Figures 3 to 5. Note that Figure 3 shows the processing procedure of the portable wireless terminal 30, Figure 4 shows the processing procedure of the gateway 40, and Figure 5 shows the processing procedure of the leader support server 50.

[0033] 3, the portable wireless terminal 30 first executes a process to receive a signal from the station beacon 10 (step S1). Next, the portable wireless terminal 30 executes a process to receive a signal from the mobile beacon 20 (step S2). Next, the portable wireless terminal 30 determines whether or not there is information (beacon device ID) received from the beacon 10 or 20 (step S3). If it determines that there is no received information (NO), the portable wireless terminal 30 returns to step S1. On the other hand, if it is determined in step S3 that there is received information (YES), the process proceeds to step S4, where the information (beacon device ID) received in step S1 or S2 is transmitted to the leader support server 50. The portable wireless terminal 30 is configured to execute the above process at a predetermined time (for example, every minute) by using a timer interrupt, for example.

[0034] The processing procedure of the gateway 40 is the same as that of the portable wireless terminal 30, and as shown in Fig. 4, first, a process of receiving a signal from the station beacon 10 is executed (step S11). Next, a process of receiving a signal from the mobile beacon 20 is executed (step S12). Then, it is determined whether or not there is information (beacon device ID) received from the beacon 10 or 20 (step S13), and if it is determined that there is no received information (NO), the process returns to step S11. Then, if it is determined in step S13 that there is received information (YES), the process proceeds to step S14, where the information (beacon device ID) received in step S11 or S12 is transmitted to the leader support server 50. The portable wireless terminal 30 is configured to execute the above process at a predetermined time (for example, every minute) by using a timer interrupt, for example.

[0035] As shown in Fig. 5, the leader support server 50 first determines whether the portable wireless terminal 30 has received a signal of a specified strength or more from the station beacon (SB) 10 (step S21). If it determines that a signal of a specified strength or more has not been received (NO), the process proceeds to step S22, where the portable wireless terminals 30 in the group and the manager are notified of this fact. If it determines in step S21 that a signal of a specified strength or more has been received (YES), the process proceeds to step S23, where it determines whether a signal of a specified strength or more has been received from the mobile beacon (MB) 20. If it determines that a signal of a specified strength or more has not been received (NO), the process returns to step S21.

[0036] On the other hand, if it is determined in step S23 that a signal of a specified strength or more has been received (YES), the process proceeds to step S24, where it is determined whether or not a specified time for detecting movement outside the area has elapsed. If it is determined here that the specified time has not elapsed (NO), the process returns to step S21. If it is determined that the specified time has elapsed (YES), the process proceeds to step S25, where the timer that counts the specified time is cleared.

[0037] Next, it is determined whether or not beacon signals have been received from all the mobile beacons 20 in the group (step S26). If it is determined that beacon signals have been received (YES), the process returns to step S21. If it is determined that beacon signals have not been received from all the mobile beacons 20 (NO), the process proceeds to step S27, where information on the mobile beacons from which signals have not been received is transmitted to the mobile wireless terminals 30 in the group. Furthermore, map data of the monitoring area is read from the database (DB) 52, and a map showing the range of the monitoring group area GA, main monitoring areas MWA1, MWA2 and auxiliary monitoring area AWA, as well as the positions of the station beacon 10 and gateway 40 using icons, etc. is displayed on the screen of the display device 51 (step S28).

[0038] Also, in step S28, if the server 50 determines that there is a mobile beacon among the multiple mobile beacons 20 belonging to the same monitoring group registered in advance in the database 52, which does not contain identification information in the transmission signals from the multiple portable wireless terminals 30 for a predetermined period of time or more, it displays the identification information of that mobile beacon 20 or the name of the child carrying that mobile beacon 20 outside the monitoring areas MWA1, MWA2 and AWA or the monitoring group area GA. Furthermore, if the server 50 determines that the received signal contains no identification information for a predetermined period of time among multiple portable wireless terminals 30 belonging to the same monitoring group that are pre-registered in the database 52, the server 50 may display the identification information of that portable wireless terminal 30 or the name of the leader carrying that portable wireless terminal 30 outside the monitoring areas MWA1, MWA2 and AWA or the monitoring group area GA.

[0039] As described above, according to the chaperone support system of this embodiment, the portable wireless terminals 30 that have received the identification information of the station beacon (transmission terminal) 10 installed in a specified area of ​​the chaperone location are considered to be in the same group, so even if a child carrying a mobile beacon 20 leaves the monitoring area (MWA) of the portable wireless terminal carried by the chaperone, if the mobile beacon is in the monitoring area of ​​another portable wireless terminal 30 in the same group, it can be determined that the child is under the group's surveillance. This makes it easy for multiple chaperones to watch over the children to prevent them from getting lost or being lost.

[0040] Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment and various modifications are possible. For example, the above embodiment of the escort support system has been described as providing escort support in spaces such as parks. However, in cases where changes in the escort format may occur during travel when forming a group using the station beacon 10 is not appropriate, such as when the escort temporarily splits up to watch over the person being escorted due to a change in the status of a traffic light at an intersection while traveling on a public road, or when the escort and the person being escorted split up and travel in multiple buses, individual monitoring areas IWA1, IWA2 can be formed as shown in Figure 6 by enabling group IDs (identification numbers) that have been set in advance to correspond to each of multiple portable wireless terminals 30, thereby enabling safe monitoring.

[0041] Fig. 7 shows an example of a group configuration in the individual monitoring mode. Of these, (A) is a configuration image diagram of an individual group, and (B) is a diagram showing configuration examples of a group setting table, a portable wireless terminal setting table, a mobile beacon setting table, and a gateway setting table. Also, Fig. 8 shows an example of group information displayed on the display device 51 in the individual monitoring mode. By enabling the group ID as described above, it is possible for the leaders to continue supervising the person being supervised even if they are temporarily separated from each other and need to keep an eye on the person being supervised.

[0042] Also, as shown in Fig. 8, by providing a last detection field on the screen displayed on the display device that displays the name, which is unique information of the leader (teacher) carrying the portable wireless terminal 30 that last detected the mobile beacon 20, it is possible to estimate the area in which to search for children with priority when one of the children leaves the monitoring area, or to estimate that the leader (teacher) has moved outside the area to search for children when the portable wireless terminal 30 leaves the group. The group ID may be configured to be set hierarchically. This allows for a variety of management options.

[0043] 9 on the display screen of the portable wireless terminal 30 equipped with a touch panel display unit, and a group monitoring mode in which a group is formed with the station beacon 10 at the center and an individual monitoring mode in which a group ID previously set for each portable wireless terminal 30 is enabled may be switched by a manual input operation on the portable wireless terminal 30. Alternatively, the mode switching screen of FIG. 9 may be displayed on the display device 51, and the server 50 may be configured to switch between the group monitoring mode and the individual monitoring mode by input operation from a mouse or keyboard.

[0044] The mobile wireless terminal 30 may be configured to change the threshold value of the radio wave intensity detected. In this way, for example, in a case where multiple leaders are watching a wide area at a distance from each other in an open space with no obstructions around, and in a case where multiple leaders are watching a narrow area without keeping a distance from each other in a narrow park surrounded by obstacles, the size of the area to be watched can be changed as shown in Fig. 10(A) or (B) by changing the threshold value of the radio wave intensity at which the mobile wireless terminal 30 detects the beacon signal. This enables appropriate monitoring to reduce the respective risks according to the structural characteristics of the place to be watched. The x marks shown in Fig. 10(B) represent obstacles.

[0045] In addition, the distance of the leader's portable wireless terminal 30 from the station beacon 10 as a starting point may be systematically determined from the reception strength of the portable wireless terminal 30, and the detection strength may be automatically changed to change the size of the area to be monitored. Furthermore, even in the case of individual monitoring in which multiple chaperones are in charge of different tasks as described above, by changing the threshold value of the radio wave strength detected by the portable wireless terminal 30, the area to be monitored can be widened or narrowed, enabling appropriate monitoring according to the chaperone situation.

[0046] Furthermore, since the transmitted radio wave strength of the station beacon 10 may change depending on the remaining battery power, the station beacon 10 may transmit remaining battery power information in addition to the device identification information, and the threshold value for the radio wave reception strength of the portable wireless terminal 30 may be determined taking into account the remaining battery power, thereby setting the size of the monitoring area. In addition, instead of or in addition to changing the threshold value of the radio wave strength detected by the portable wireless terminal 30, the monitoring range may be changed by changing the specified time for determining whether or not to issue an alarm, or by changing the radio wave strength transmitted by the station beacon 10.

[0047] Furthermore, the mobile beacon 20 may be equipped with a gyro sensor, and may be configured to transmit an identification signal while detecting motion, but not transmit an identification signal or change the identification signal when no motion is detected. This makes it easy to determine whether the person being led is carrying the mobile beacon 20. In addition, if the leader visually confirms that the person being led is moving but does not receive an identification signal, it can be determined that the person being led has dropped or removed the mobile beacon 20. Instead of providing the mobile beacon 20 with a gyro sensor, the mobile beacon 20 may be provided with a push button for transmission, and the transmission of the identification signal may be controlled by periodically pressing the button.

[0048] Also, when multiple portable wireless terminals 30 simultaneously stop receiving signals from one station beacon 10, the server 50 may determine that the battery of the station beacon 10 is dead and may transmit a notification to the portable wireless terminal 30 informing that the battery is dead and that group monitoring is not possible. Alternatively, since the leader may intentionally turn off the battery of the station beacon 10 to start the whole group movement, when multiple portable wireless terminals 30 simultaneously stop receiving signals from one station beacon, the server 50 may be configured to switch from group monitoring mode to individual monitoring mode. [Explanation of symbols]

[0049] 10 Station beacon (fixed transmitter) 20 Mobile beacon (mobile transmitter) 30 Portable wireless terminals 40 Gateway (beacon repeater) 50 Leading Support Server 51 Display device 52 Database

Claims

1. One or more fixed transmitters that are installed in a predetermined area of ​​the escorting location and are capable of wirelessly transmitting at least their own identification information; A plurality of mobile transmitters carried by the persons to be guided and capable of wirelessly transmitting at least their own identification information; a plurality of portable wireless terminals each receiving wireless signals transmitted from the fixed transmitter and the mobile transmitter and wirelessly transmitting a signal including the identification information and its own terminal identification information contained in the received signal; a leader support server including a display device and a storage device, the leader support server receiving a wireless signal from the portable wireless terminal; A chaperone support system comprising: The storage device has registered therein identification information of the mobile transmitter carried by the person to be accompanied, The chaperone support server includes: A supervision support system characterized by determining that a portable wireless terminal that has transmitted identification information of the fixed transmitter or the mobile transmitter is the terminal being monitored, and determining that multiple portable wireless terminals that have transmitted identification information of a specific fixed transmitter and the multiple mobile transmitters that correspond to the identification information contained in the transmission signal from the portable wireless terminal belong to the same monitoring group, and displaying information to support supervision on the display device or notifying the portable wireless terminal.

2. The storage device has registered therein in advance the identification information of the mobile transmitter and the individual information of the person to be guided who carries the mobile transmitter, The chaperone support server includes: The escort support system described in claim 1, characterized in that it determines whether the information transmitted from the multiple portable wireless terminals includes all of the identification information of mobile transmitters that have been pre-registered in the storage device, and if the identification information of the pre-registered mobile transmitter is not included for a predetermined period of time or more, it notifies the multiple portable wireless terminals of the identification information of the mobile transmitter that has not been included or the unique information of the person being escorted who is carrying that mobile transmitter.

3. In the storage device, identification information of the portable wireless terminal carried by the leader or unique information of the leader carrying the portable wireless terminal is registered in advance, The chaperone support server includes: The chaperone support system described in claim 2, characterized in that when it is determined based on the received signal that there is a portable wireless terminal among the multiple portable wireless terminals determined to belong to the monitoring group that does not contain the identification information of a specified fixed transmitter for a specified period of time or more, the identification information of the portable wireless terminal that did not contain the identification information of the specified fixed transmitter or the unique information of the chaperone carrying the portable wireless terminal is notified to the multiple portable wireless terminals.

4. The chaperone support server includes: displaying on the display device the statuses of the plurality of mobile transmitters that have been determined to belong to the monitoring group based on the information transmitted from the plurality of mobile wireless terminals; The escort support system described in claim 3, characterized in that if the information transmitted from the multiple portable wireless terminals does not include identification information of a pre-registered mobile transmitter for a predetermined period of time or more, the identification information of the mobile transmitter that was not included or the unique information of the person being escorted who is carrying that mobile transmitter is displayed on the display device.

5. The chaperone support server includes: The leadership support system described in claim 4, characterized in that, based on the information transmitted from the multiple portable radio terminals, if the transmission signals from the multiple portable radio terminals do not contain identification information of a specified fixed transmitter for a specified period of time or more, the identification information of the portable radio terminal that did not contain the identification information of the specified fixed transmitter or the unique information of the leader carrying that portable radio terminal is displayed on the display device.

6. In the storage device, identification information of the plurality of portable wireless terminals carried by the leader, identification information of the mobile transmitters corresponding to the respective identification information, or unique information of the leader carrying the mobile transmitter are registered in advance, The chaperone support server includes: A escort support system as described in any one of claims 1 to 5, characterized in that in response to an external request, the multiple portable radio terminals and the mobile transmitters corresponding to each portable radio terminal are determined to belong to an individual group, and it is determined whether the information transmitted from the multiple portable radio terminals includes identification information of a mobile transmitter of the same individual group that has been pre-registered in the memory device, and if the identification information of a mobile transmitter that has been pre-registered is not included for a predetermined time or longer, the identification information of the mobile transmitter that was not included or the unique information of the person being escorted who carries that mobile transmitter is notified to the portable radio terminals belonging to the corresponding individual group.

7. 7. The leader support system according to claim 6, wherein the portable wireless terminal is configured so that a threshold value of radio wave intensity for detecting a signal from the fixed transmitter can be changed.

8. The leadership support system described in any one of claims 1 to 5, further comprising a repeater installed in the specified area capable of receiving a signal from the mobile transmitter and transmitting it to the leadership support server.

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