Determination device, determination system, determination method, control program, and recording medium

Abstract

To make a precise determination of whether or not an object is in a non-normal state.SOLUTION: A portable communication terminal (1)comprises: a sensor (11) that detects a movement of the own terminal; a possessor state determining unit (120) for determining a possessor state of the own terminal, which is a state of a movement of a possessor of the own terminal, from the sensor (11); a receiving unit (12) that receives other terminal possessor states, which are states of movements of each possessor of other communication terminals included in a network; and a non-normal state determining unit (130) for determining that a region including a communication terminal corresponding to the own terminal possessor state or the other terminal possessor state in which a temporal change has become a predetermined change is in a non-normal state, when a ratio, in the own terminal possessor state and the other terminal possessor states, at which a temporal change has become a predetermined change exceeds a threshold value.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a determination device or the like that determines whether a state is normal or abnormal. [Background technology]

[0002] Disasters such as fires and terrorist attacks often occur suddenly and locally. For this reason, people may not notice the occurrence of a disaster even if they are near the disaster site. Therefore, there is a demand for a method to quickly detect the occurrence of a disaster and notify people near the disaster site.

[0003] Therefore, the inventors of the present application are conducting research and development of an Emergency Rescue Evacuation Support System (ERESS) that automatically detects disasters early using only mobile terminals equipped with multiple sensors and provides disaster victims with highly real-time disaster information.

[0004] For example, Non-Patent Document 1 describes an emergency rescue and evacuation system that can quickly detect disasters by using sensors installed in mobile devices such as smartphones to collect data on people's movements via wireless communication.

[0005] Furthermore, Non-Patent Document 2 describes a configuration in which, in the emergency rescue and evacuation system described in Non-Patent Document 1, detection based on sensor information of a terminal and visual information of a person is combined.

[0006] Non-patent document 3 describes a method for analyzing changes in the behavioral state of a terminal holder using sparse structure learning in an Emergency Rescue Evacuation Support System (ERESS), which was developed with the aim of automatically detecting the occurrence of a disaster and providing safe and rapid evacuation support to victims in real time.

[0007] Patent document 1 also describes a terminal that estimates a specified event based on sensor information collected by the terminal itself, and that estimates a specified event in an area including other terminals that can communicate with the terminal itself, using sensor information collected by the other terminals or the specified event estimated by the terminal itself, and the specified event estimated by the terminal itself.

[0008] Patent Document 2 describes a mobile information terminal that determines the surrounding situation using a situation estimated based on sensor values ​​and a situation estimation result of another terminal present in the vicinity, the situation being received from the other terminal.

[0009] Patent document 3 describes a danger detection system that uses the movements of a mobile device owner detected by a gyro sensor installed in the mobile device to determine whether the owner can be considered to have encountered a dangerous situation, and if so, notifies the information terminals of relevant parties of a message to that effect and location information. [Prior art documents] [Patent documents]

[0010] [Patent Document 1] JP 2018-170751 A [Patent Document 2] JP 2006-50367 A [Patent Document 3] JP 2011-97394 A [Non-patent literature]

[0011] [Non-Patent Document 1] Tomotaka Wada, Kana Maekawa, and Kazuhiro Otsuki, "Evacuation guidance method considering the occurrence of disasters at multiple locations in an emergency life-saving evacuation support system," Disaster Information 2021, Vol. 19, No. 2, pp. 121-131 [Non-Patent Document 2] Tomotaka Wada, Yuta Kanayama, and Kazuhiro Otsuki, "A study on a disaster occurrence detection method combining mobile device sensor information and human detection for emergency rescue and evacuation support," IEICE Technical Report, vol.122, no.56, ICTSSL2022-8, pp.39-44, May 2022 [Non-Patent Document 3] Yoon, Yebun, and Wada, Tomotaka, "Feature Analysis of Behavioral States during Disasters Using Sparse Structure Learning for Emergency Lifesaving and Evacuation Support Systems," IEICE Technical Report, vol.122, no.142, ICTSSL2022-13, pp. 16-21, July 2022 Summary of the Invention [Problem to be solved by the invention]

[0012] In the conventional emergency rescue and evacuation support system (ERESS), among human movements, stopping and walking, which are common everyday actions, were judged as normal, while running and falling, which are actions that are thought to occur frequently during disasters, were judged as emergency (abnormal). There are cases where this judgment is considered appropriate, but for example, when a disaster occurs and people are crowded together in a narrow passageway, making it difficult to even walk, people are likely to walk slowly or stop. Therefore, there are cases where stopping or walking should be judged as abnormal.

[0013] One aspect of the present invention has been made in consideration of the above-mentioned problems, and its purpose is to realize a determination device, etc. that can accurately determine whether a person's behavior is normal or abnormal. [Means for solving the problem]

[0014] In order to solve the above-mentioned problems, a determination device according to one embodiment of the present invention is a determination device that is one of the communication terminals included in a network composed of communication terminals that can communicate with each other using short-range wireless communication, and is equipped with a sensor that detects the movement of the own terminal, an owner status determination unit that determines a own terminal owner status, which is the movement state of the owner of the own terminal, from the detection result of the sensor, a receiving unit that receives other terminal owner statuses, which are the movement states of the owners of each of the other communication terminals included in the network, directly from one or more other communication terminals included in the network or via another communication terminal included in the network, and a non-normal state determination unit that determines that an area including a communication terminal corresponding to the own terminal owner status or the other terminal owner status where the temporal change has become the specified change is in a non-normal state when the proportion of the own terminal owner status and the received other terminal owner status where the temporal change has become the specified change exceeds a threshold value.

[0015] In order to solve the above-mentioned problem, a determination system according to one embodiment of the present invention includes the determination device and a plurality of communication terminals capable of communicating with the determination device using short-range wireless communication, wherein the determination device and the plurality of communication terminals form a network capable of communicating with each other using the short-range wireless communication, and the communication terminal includes a sensor that detects the movement of the own terminal, a state determination unit that determines a own-terminal holder state, which is the state of movement of the own-terminal holder, from the detection result of the sensor, a receiving unit that receives other-terminal holder states, which are the state of movement of the holders of each of the other communication terminals included in the network, directly from one or more other communication terminals included in the network or via another communication terminal included in the network, and a transmitting unit that transmits the own-terminal holder state and the other-terminal holder state received by the own terminal to one or more other communication terminals included in the network.

[0016] In order to solve the above-mentioned problem, a determination method according to one embodiment of the present invention is a determination method by a determination device which is one of the communication terminals included in a network composed of communication terminals which can communicate with each other using short-range wireless communication, the determination device is equipped with a sensor which detects the movement of the own terminal, and includes a holder state determination step of determining a own terminal holder state, which is the movement state of the own terminal holder, from the detection result of the sensor, a receiving step of receiving other terminal holder states, which are the movement states of the holders of each of the other communication terminals included in the network, directly from one or more other communication terminals included in the network or via another communication terminal included in the network, and a non-normal state determination step of determining that an area including a communication terminal corresponding to the own terminal holder state or the other terminal holder state in which the temporal change has become the specified change is in a non-normal state when the proportion of the own terminal holder state and the received other terminal holder state in which the temporal change has become the specified change exceeds a threshold value. Effect of the Invention

[0017] According to one embodiment of the present invention, whether or not a communication terminal is in an abnormal state is determined based on the movements of multiple communication terminals, thereby making it possible to make a more accurate determination compared to when the determination is made based on the movements of a single communication terminal. [Brief description of the drawings]

[0018] [Figure 1] 1 is a functional block diagram showing a configuration of a main part of a mobile communication terminal according to a first embodiment of the present invention. [Diagram 2] FIG. 1 is a diagram illustrating an example of a mobile communication terminal that constitutes a MANET. [Diagram 3] FIG. 13 is a diagram showing an example of a predetermined change in the holder state. [Figure 4] FIG. 11 is a diagram for explaining an example of determining a non-normal state. [Diagram 5] FIG. 11 is a diagram for explaining an example of determining a non-normal state. [Figure 6] 10 is a flowchart showing a process flow in the portable communication terminal. [Figure 7]FIG. 11 is a functional block diagram showing a configuration of a main part of a mobile communication terminal according to a second embodiment of the present invention. [Figure 8] 10 is a flowchart showing a process for determining a congestion level. [Figure 9] 13 is a flowchart showing a process for searching for an evacuation route. [Figure 10] FIG. 13 is a diagram showing an example of a display of an evacuation route. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] [Embodiment 1] An embodiment of the present invention will be described in detail below. A mobile communication terminal (communication terminal) 1 according to this embodiment is capable of wireless communication with other mobile communication terminals 1 using short-range wireless communication technology such as BLE (Bluetooth Low Energy) (Bluetooth is a registered trademark), and configures a network called MANET (Mobile Ad hoc Network) among three or more mobile communication terminals 1. MANET is a self-configuring network that links mobile communication terminals 1 by wireless communication. By configuring a MANET, it becomes possible to share information between mobile communication terminals 1 in almost real time.

[0020] The mobile communication terminal 1 forms a MANET with multiple mobile communication terminals 1, and uses the changes in the state of each terminal holder determined by each mobile communication terminal 1 to determine whether all or part of the areas that make up the MANET are in an abnormal state that is different from normal.

[0021] An example of a plurality of mobile communication terminals 1 constituting a MANET will be described with reference to FIG. 2. FIG. 2 shows a state in which each of the holders A to I holds a mobile communication terminal 1 in a building. Here, the mobile communication terminal 1 is wirelessly connected to other mobile communication terminals 1 capable of short-range wireless communication, and the entirety of the terminals constitutes a MANET. For example, the mobile communication terminal 1 held by the holder A is wirelessly connected to the mobile communication terminals 1 held by the holder B and the holder C. Similarly, the mobile communication terminal 1 held by the holder B is wirelessly connected to the mobile communication terminals 1 held by the holders A, C, E, F, and G. In this way, the entirety of the terminals 1 are wirelessly connected to other mobile communication terminals 1 capable of short-range wireless communication, and the entirety of the terminals constitute a MANET. In addition, the mobile communication terminals 1 constituting the MANET can share information even between the mobile communication terminals 1 that are not directly connected. This is because the mobile communication terminal 1 in between plays the role of a router. Therefore, here, all of the mobile communication terminals 1 held by the holders A to I can share the same information. For example, information indicating abnormal conditions such as disasters, information regarding evacuation routes in the event of a disaster, etc. can be shared almost in real time.

[0022] Moreover, mobile communication terminal 1 determines whether or not the state is abnormal based on the change in the state of each terminal owner determined by a plurality of mobile communication terminals 1 constituting the MANET, and therefore can perform an accurate determination.

[0023] The main configuration of a mobile communication terminal 1 will be described with reference to Fig. 1. Fig. 1 is a functional block diagram showing the main configuration of a mobile communication terminal 1. Although each of the mobile communication terminals 1 included in the MANET has the same functions, one of them will be described here as a determination device. Of course, among the mobile communication terminals 1 included in the MANET, it is not necessary for one mobile communication terminal 1 to be a determination device, and all of the mobile communication terminals 1 play the role of a determination device. Also, it can be said that a system including all of the mobile communication terminals 1 constituting the MANET is a determination system that determines whether or not it is in an abnormal state.

[0024] As shown in FIG. 1, a mobile communication terminal 1 serving as a determination device includes a control unit 10, a sensor 11, a receiving unit 12, and a transmitting unit 13.

[0025] The control unit 10 executes various processes in the mobile communication terminal 1, and includes a communication control unit 110, a holder status determination unit 120, a non-normal status determination unit 130, and received data 200.

[0026] The communication control unit 110 performs short-range wireless communication with the other mobile communication terminal 1 via the receiving unit 12 and the transmitting unit 13. The communication control unit 110 stores data received from the other mobile communication terminal 1 via the receiving unit 12 in received data 200, and transmits the determination result by the carrier status determination unit 120 to the other mobile communication terminal 1 via the transmitting unit 13.

[0027] The holder state determination unit 120 determines the state of the holder of the mobile communication terminal 1 using the detection result (sensor value) by the sensor 11. For example, the holder state determination unit 120 determines the state of the holder to be one of "stopped", "walking", "running" and "falling" from the detection result by the sensor 11. Since a configuration for determining the state of the holder to be one of the above four states from the detection result by the sensor 11 can be made using a publicly known technology, a description of which is omitted here. However, for example, the holder state can be determined using a trained model machine-learned by SVM (Support Vector Machine), RF (Random Forest) or the like. Note that, although a configuration for determining which of the above four states the holder is in is used here, the present invention is not limited to this. It may be a configuration for determining the state including sitting, lying down (on one's back, on one's stomach), walking speed, and traveling direction.

[0028] The holder state determined by the own terminal is called the holder state of the own terminal, and the holder state of the other mobile communication terminal 1 included in the MANET determined by the other mobile communication terminal 1 is called the holder state of the other terminal. When there is no need to distinguish between the two, they are simply called holder states.

[0029] The non-normal state determination unit 130 determines whether or not the area constituting the MANET is in a non-normal state by using the holder state of the mobile communication terminal 1 determined by the holder state determination unit 120 and the holder states determined for each of the other mobile communication terminals 1 constituting the MANET. Details of the determination process by the non-normal state determination unit 130 will be described later.

[0030] Received data 200 is the carrier status determined by each of the other mobile communication terminals 1 constituting the MANET, received via receiving unit 12. Received data 200 is data in which information identifying each mobile communication terminal 1, the carrier status of that mobile communication terminal 1, and time are associated with each other (see FIG. 5).

[0031] The sensor 11 detects the movement of the mobile communication terminal 1, and is, for example, an acceleration sensor, an angular velocity sensor, a geomagnetic sensor, etc. The movement of the holder can be determined based on the detection results of the acceleration sensor and the angular velocity sensor, and the direction of the holder's movement can be determined based on the geomagnetic sensor.

[0032] The receiver 12 acquires the carrier status determined in each of the other mobile communication terminals 1 constituting the MANET through short-range wireless communication.

[0033] Transmitter 13 transmits the carrier state determined by carrier state determination unit 120 to other mobile communication terminals 1 constituting the MANET by short-range wireless communication. In addition, when transmitter 13 determines that the carrier state is an abnormal state by abnormal state determination unit 130, transmitter 13 transmits a message to that effect to other mobile communication terminals 1 constituting the MANET.

[0034] [Details of the determination of abnormal state by the abnormal state determination unit 130] Next, the processing in non-normal state determination unit 130 will be described with reference to Figs. 3 to 5. As described above, non-normal state determination unit 130 determines whether or not an area including mobile communication terminal 1 constituting the MANET is in a non-normal state, using the holder state of mobile communication terminal 1 determined by holder state determination unit 120 and the holder states determined for each of the other mobile communication terminals 1 constituting the MANET. More specifically, non-normal state determination unit 130 determines that all or a part of the area including mobile communication terminal 1 constituting the MANET is in a non-normal state when the rate of a predetermined change in the holder state of its own terminal and the received holder states of the other terminals exceeds a threshold value.

[0035] First, a predetermined change in the state of the holder will be described. 301 in FIG. 3 shows an example of a predetermined change in the state of the holder. 301 in FIG. 3 shows how the four states of "stop", "walk", "run", and "fall" are changed to determine that a predetermined change has occurred. Here, it is determined that a predetermined change has occurred in the state of the holder for eight patterns of "stop → run", "stop → fall", "walk → stop", "walk → run", "walk → fall", "run → stop", "run → fall", and "fall → run". This is because "walking, running → stop" may mean that the holder is stuck, "stop, walking, running → fall", and "stop, walking, fall → run" may mean that the holder has fallen and cannot move, and "stop, walking, fall → run" may mean that the holder is evacuating. However, the above is an example, and a different determination criterion may be set. Furthermore, as described above, the four states of "stop", "walking", "run", and "fall" are not limited to these, and other states such as sitting, lying down (facing up, facing down), walking speed, and traveling direction may be determined.

[0036] The non-normal state determination unit 130 determines that the state is non-normal when the rate at which the carrier state becomes one of the above eight patterns within a predetermined time (e.g., one minute) is equal to or higher than a threshold, for example, equal to or higher than 50%. The threshold value of 50% is an example, and may be a higher or lower value. It may be set appropriately according to the actual situation. Furthermore, the non-normal state determination unit 130 may determine that an area including all mobile communication terminals 1 constituting the MANET is in a non-normal state, or may determine that an area including a mobile communication terminal 1 whose carrier state has changed in a predetermined manner is in a non-normal state.

[0037] An example will be shown with reference to Figures 4 and 5. Figure 4 shows an example in which holders A to I, each carrying a mobile communication terminal 1, are present in a building. Figure 5 shows the transition of the holder status determined in the mobile communication terminal 1 carried by each holder. Since the holder status is transmitted to and received by each mobile communication terminal 1, the data shown in Figure 5 can be said to be received data 200 in the mobile communication terminal 1.

[0038] Here, it is assumed that a non-normal state has been determined in the mobile communication terminal 1 carried by the carrier I. As described above, the mobile communication terminal 1 carried by the carrier I receives the carrier states determined in the mobile communication terminals 1 carried by the carriers A to H via the MANET.

[0039] As shown in FIG. 5, at the time of 10:00:00 (10:00:00), holders A, B, and E are in the "walking" state, and holders C, D, F, G, H, and I are in the "stopped" state. Assume that a fire breaks out in room X. Therefore, at the time of 10:00:10, holders A, B, and F are in the "walking" state, holders D and E are in the "fallen" state, and holders G, H, and I are in the "stopped" state. Therefore, at this time, holder C's "stopped -> running state", holder D's "stopped -> fallen" state, and holder E's "walking -> fallen" state are the predetermined changes. The proportion of the predetermined changes is 3(C, D, E) / 9, so the mobile communication terminal 1 of holder I does not determine that it is in an abnormal state.

[0040] Furthermore, at the time of 10:00:20, holders A, B, C, D, and E are in the "running" state, holder F is in the "walking" state, and holders G, H, and I are in the "stopped" state. Therefore, at this time, holder A's "walking → running" state, holder B's "walking → running" state, and holders D and E's "falling → walking" state are the predetermined changes. At this time, the rate at which the predetermined change occurs is 4(A, B, D, E) / 9, but the rate at which the predetermined change occurs within a predetermined time (1 minute) is 5(A, B, C, D, E) / 9. Therefore, holder I's mobile communication terminal 1 determines that the state is abnormal. Having determined that holder I is in an abnormal state, holder I's mobile communication terminal 1 transmits the abnormal state to other mobile communication terminals 1 constituting the MANET. This allows all holders A to I to recognize that they are in an abnormal state.

[0041] In addition, when it is determined that an area including a mobile communication terminal 1 whose owner status has changed in a specified manner is in an abnormal state, the area includes the mobile communication terminals 1 of owners A, B, C, D, and E, and therefore room X and its vicinity are determined to be in an abnormal state.

[0042] Moreover, the area constituting the MANET may be divided into a plurality of zones, and the abnormal state determination unit 130 may determine whether or not each zone is in an abnormal state. In this case, the abnormal state determination unit 130 determines whether or not each zone is in an abnormal state based on whether or not the rate at which the change over time in the carrier state corresponding to the mobile communication terminal 1 becomes a predetermined change exceeds a threshold value.

[0043] [Processing flow in mobile communication terminal 1] Next, the flow of processing in the mobile communication terminal 1, that is, the determination method, will be described with reference to Fig. 6. Fig. 6 is a flowchart showing the flow of processing in the mobile communication terminal 1.

[0044] First, the holder state determination unit 120 of the mobile communication terminal 1 acquires the sensor value of the sensor 11 (S101). Then, the holder state, which is the state of the holder of the mobile communication terminal 1, is determined (S102, holder state determination step). Specifically, the state is determined to be one of the above-mentioned "stopped", "walking", "running", and "falling". Next, the communication control unit 110 transmits the determination result of the holder state determination unit 120 to the other mobile communication terminals 1 constituting the MANET, and receives the holder state determined by each of the other mobile communication terminals 1 from the other mobile communication terminals 1 (S103, reception step). Then, the non-normal state determination unit 130 determines whether or not the state is non-normal using the determination result by the holder state determination unit 120 and the received holder state of the other mobile communication terminals 1 (S104, non-normal state determination step). If it is determined that the mobile communication terminal 1 is in an abnormal state (YES in S105), the communication control unit 110 transmits a message to the other mobile communication terminals 1 constituting the MANET that the mobile communication terminal 1 is in an abnormal state (S106).

[0045] As described above, mobile communication terminal 1 according to the present embodiment is a determination device that is one of the communication terminals included in a MANET that is configured by communication terminals that can communicate with each other using short-range wireless communication such as BLE. The determination device includes sensor 11, holder state determination unit 120, receiving unit 12, and non-normal state determination unit 130. Sensor 11 detects the movement of the own terminal. Holder state determination unit 120 determines the own terminal holder state, which is the state of movement of the holder of the own terminal, from the detection result (sensor value) of sensor 11. Receiving unit 12 receives the other terminal holder state, which is the state of movement of each holder of other mobile communication terminals 1 included in the MANET, directly from one or more other mobile communication terminals 1 included in the MANET, or via another mobile communication terminal 1 included in the MANET. When the proportion of the state of the owner of the own terminal and the received state of the owner of the other terminal that changes over time to a specified change exceeds a threshold value, the non-normal state determination unit 130 determines that the area including the mobile communication terminal 1 corresponding to the state of the owner of the own terminal or the state of the owner of the other terminal that changes over time to a specified change is in a non-normal state.

[0046] As a result, whether or not a person is in an abnormal state is determined from the movements of multiple mobile communication terminals 1, so a more accurate determination can be made compared to a determination based on the movement of a single mobile communication terminal. Also, since the movement of the person carrying the mobile communication terminal 1 is determined from changes over time in the movement of the mobile communication terminal 1, whether or not a person is in an abnormal state can be determined after accurately grasping the movement of the person. Furthermore, because whether or not a person is in an abnormal state can be determined simply by the fact that each person carries a mobile communication terminal 1, a simple configuration can be used.

[0047] [Embodiment 2] Other embodiments of the present invention will be described below. For ease of explanation, the same reference numerals are given to components having the same functions as those described in the above embodiment, and the description thereof will not be repeated.

[0048] The mobile communication terminal 1A according to this embodiment displays an evacuation route when it is determined that the terminal is in an abnormal state by the abnormal state determination unit 130. By displaying the evacuation route, the holder can be evacuated appropriately.

[0049] Fig. 7 is a functional block diagram showing the main configuration of the mobile communication terminal 1A. As shown in Fig. 7, the mobile communication terminal 1A includes a display unit 14 in addition to the configuration of the mobile communication terminal 1 described above, and includes a position information acquisition unit (position acquisition unit) 140, an evacuation route derivation unit 150, an evacuation route presentation unit 160, and map data 210 in a control unit 10A.

[0050] The display unit 14 is a display that displays information, for example, an evacuation route.

[0051] The location information acquisition unit 140 acquires the current location of the mobile communication terminal 1. The location information acquisition unit 140 may acquire the relative location within a building using, for example, iBeacon (registered trademark), or may acquire the current location by GPS.

[0052] The evacuation route deriving unit 150 calculates the passage cost using the location information acquired by the location information acquisition unit 140, the location information of the other mobile communication terminal 1A that constitutes the MANET received from the other mobile communication terminal 1A, the congestion degree derived using these location information, the map data stored in the map data 210, and the like, and derives the evacuation route with the smallest passage cost. For example, the evacuation route deriving unit 150 derives the shortest route to the exit as the evacuation route while avoiding the non-normal state area and avoiding congestion. The non-normal state area is an area including the mobile communication terminal 1A whose carrier state has undergone a predetermined change. The area may correspond to each of the iBeacons (registered trademark) described later, or an area corresponding to multiple iBeacons may be regarded as one area. The method of deriving the evacuation route will be described later in detail.

[0053] The evacuation route presentation unit 160 causes the display unit 14 to display the evacuation route derived by the evacuation route derivation unit 150. Note that the evacuation route may be output by voice in addition to or separately from the display by the display unit 14.

[0054] The map data 210 is, for example, map data (maps, floor maps, etc.) of the location, facilities, etc., of the owner of the mobile communication terminal 1A.

[0055] [Details of evacuation route derivation in the evacuation route derivation unit 150] Next, the derivation of an evacuation route in the evacuation route derivation unit 150 will be described in detail with reference to Fig. 8 and Fig. 9. As described above, the evacuation route derivation unit 150 derives an evacuation route by using a congestion degree. First, a method of deriving the congestion degree will be described with reference to Fig. 8. Fig. 8 is a flowchart showing the flow of derivation of the congestion degree.

[0056] As shown in Fig. 8, the carrier status determination unit 120 acquires a sensor value from the sensor 11, and the location information acquisition unit 140 receives iBeacon information (beacon signal) from an iBeacon transmitter (S201). Then, the carrier status determination unit 120 determines the carrier status using the sensor value (S202). Next, the communication control unit 110 transmits the carrier status and iBeacon information determined by the carrier status determination unit 120 to other mobile communication terminals 1A constituting the MANET, and receives the carrier status and iBeacon information from the other mobile communication terminals 1A. By receiving the iBeacon information of all mobile communication terminals 1A constituting the MANET, the locations of all mobile communication terminals 1A can be ascertained.

[0057] Next, the evacuation route derivation unit 150 calculates the number of mobile communication terminals 1A with the same iBeacon information (S204). Since the iBeacon information indicates the location of the transmitter that transmitted the iBeacon information, mobile communication terminals 1A with the same iBeacon information are in the same area. In other words, an area is a region in which the iBeacon information is the same.

[0058] Then, when the calculated number of terminals exceeds a predetermined value (YES in S205), the evacuation route derivation unit 150 judges whether the carrier state corresponding to the mobile communication terminal 1A having the same iBeacon information is a predetermined state, for example, "stopped" or "walking" (S206). Then, when the carrier state continues in a predetermined state for a predetermined time (YES in S207), the evacuation route derivation unit 150 judges that the area indicated by the iBeacon information is in a congested state. Furthermore, the evacuation route derivation unit 150 judges whether the congestion degree is "high" or "medium" according to the number of terminals (S208). The determined congestion degree may be transmitted to other mobile communication terminals 1A constituting the MANET. In this way, the other mobile communication terminals 1A can also perform the evacuation route search process described later using the congestion degree.

[0059] Next, a process of searching for an evacuation route using the congestion degree will be described with reference to Fig. 9. Fig. 9 is a flowchart showing the flow of the process of searching for an evacuation route.

[0060] When the evacuation route derivation unit 150 acquires congestion level information indicating that the congestion level is "high" or "medium" (S301), it starts a process of searching for the shortest route as an evacuation route (S302). First, if there is an area with a "high" congestion level (YES in S303), it excludes routes that pass through that area (S304).

[0061] Next, the evacuation route deriving unit 150 judges whether there is an area with a "medium" congestion level (S305). If there is an area with a "medium" congestion level (YES in S305), the number of terminals in the area including the own terminal, that is, the number of mobile communication terminals 1A having the same iBeacon information as the own terminal, is compared with the number of terminals in the area with a "medium" congestion level (S306). Then, if the "number of terminals in the area including the own terminal>the number of terminals in the area with a "medium" congestion level" (YES in S306), the route passing through the area with a "medium" congestion level is excluded (S307). Then, the evacuation route deriving unit 150 uses the map data 210 to search for the shortest route from the current position to the exit, excluding the excluded route (S308). This ends the process of searching for the shortest route (S309).

[0062] According to the above, a route that passes through an area with a "high" congestion level is not an evacuation route. Also, a route that passes through an area with a "medium" congestion level is not an evacuation route if the number of terminals in the area with a "medium" congestion level, i.e., the number of carriers in the area with a "medium" congestion level, is less than the number of carriers in the area of ​​the own terminal. In other words, a number of people greater than the number of people in the area with a "medium" congestion level will not pass through the area with a "medium" congestion level. This makes it possible to search for the shortest route while preventing an already congested area from becoming even more congested.

[0063] FIG. 10 shows an example of an evacuation route displayed on the display unit 14. In the example shown in FIG. 10, a route R is shown on a map until the holder in room X reaches the exit W. The route R shows the evacuation direction with an arrow, but is not limited to this. In addition to or separately from the display on the map, the route may be notified by voice or by using haptics technology. Haptics technology refers to technology that gives force, vibration, movement, etc. to the user and obtains feedback through the skin sensation.

[0064] As described above, according to the mobile communication terminal 1A of this embodiment, whether or not the mobile communication terminal 1A is in an abnormal state is determined using the holder state (stopped, walking, running, fallen) determined in the multiple mobile communication terminals 1A constituting the MANET, so that accurate determination can be performed. In addition, whether or not the mobile communication terminal 1A is in an abnormal state is determined from the holder state determined in the mobile communication terminal 1A, so that it is possible to recognize whether or not the area including the mobile communication terminal 1A is in an abnormal state. This makes it possible to avoid areas in an abnormal state and search for an evacuation route. As a result, it is possible to warn the holder of the mobile communication terminal 1A, estimate and present a guide route, guide the holder in an abnormal state to a safe position, and so on.

[0065] [Additional Notes] Although the mobile communication terminal 1 (1A) constituting the MANET has been described above, the mobile communication terminal 1 may be configured to connect to a network other than the MANET, such as the Internet, and to connect to a server, etc. This makes it possible to obtain a wide range of information.

[0066] In the above, whether or not the state is abnormal is determined using the change in the state of the carrier, but in addition to this, visual information of the carrier may be used. That is, a disaster visually recognized by the carrier may be notified to the mobile communication terminal 1 constituting the MANET, and an evacuation route may be searched for and displayed.

[0067] [Software implementation example] The functions of the mobile communication terminal 1 (1A) (hereinafter referred to as the "device") can be realized by a program for causing a computer to function as the device, and a program for causing a computer to function as each control block of the device (particularly each part included in the control unit 10 (10A)).

[0068] In this case, the device includes a computer having at least one control device (e.g., a processor) and at least one storage device (e.g., a memory) as hardware for executing the program. The control device and storage device execute the program to realize each function described in each of the above embodiments.

[0069] The program may be non-transitory and may be recorded in one or more computer-readable recording media. The recording media may or may not be included in the device. In the latter case, the program may be provided to the device via any wired or wireless transmission medium.

[0070] In addition, some or all of the functions of each of the control blocks can be realized by a logic circuit. For example, an integrated circuit in which a logic circuit that functions as each of the control blocks is formed is also included in the scope of the present invention. In addition, the functions of each of the control blocks can be realized by, for example, a quantum computer.

[0071] Furthermore, each process described in each of the above embodiments may be executed by AI (Artificial Intelligence). In this case, the AI ​​may be executed by the control device or another device (for example, an edge computer or a cloud server).

[0072] 〔summary〕 The determination device according to aspect 1 of the present invention is a determination device which is one of the communication terminals included in a network composed of communication terminals which can communicate with each other using short-range wireless communication, and comprises a sensor which detects the movement of the own terminal, a holder state determination unit which determines a holder state of the own terminal, which is the movement state of the holder of the own terminal, from the detection result of the sensor, a receiving unit which receives other terminal holder states, which are the movement states of the holders of each of the other communication terminals included in the network, directly from one or more other communication terminals included in the network or via another communication terminal included in the network, and a non-normal state determination unit which determines that an area including a communication terminal corresponding to the own terminal holder state or the other terminal holder state which has changed over time due to the specified change is in a non-normal state when the proportion of the own terminal holder state and the received other terminal holder state which have changed over time that exceeds a threshold value.

[0073] According to the above configuration, whether or not a communication terminal is in an abnormal state is determined based on the movements of a plurality of communication terminals, so that a more accurate determination can be made compared to the case where the determination is made based on the movement of a single communication terminal.

[0074] Furthermore, since the movement of the person carrying the communication terminal is determined from the change over time in the movement of the communication terminal, it is possible to accurately grasp the movement of the person carrying the communication terminal and determine whether or not the person is in an abnormal state.

[0075] Furthermore, since it is possible to determine whether or not a person is in an abnormal state simply by having the communication terminal, this can be realized with a simple configuration.

[0076] The determination device of aspect 2 of the present invention, in aspect 1, is provided with a transmission unit that transmits the terminal owner status and the other terminal owner status received by the terminal to one or more other communication terminals included in the network, and when the non-normal state determination unit determines that the terminal is in an abnormal state, the transmission unit transmits the determination result to the other communication terminals.

[0077] According to the above configuration, it is possible to recognize whether or not the other communication terminals constituting the network are in an abnormal state.

[0078] In the determination device of aspect 3 of the present invention, in aspect 1 or 2, the owner state determination unit determines whether the owner of the own terminal is in a stopped, walking, running, or fallen state as the owner state of the own terminal, and the non-normal state determination unit determines that the state is non-normal if the proportion of time-wise changes in the owner state of the own terminal and the owner state of the other terminal that are either stopped to running, stopped to falling, walking to stop, walking to running, walking to falling, running to stop, running to falling, or falling to running exceeds the threshold value.

[0079] According to the above configuration, it is possible to accurately determine whether or not the abnormal state exists.

[0080] The determination device according to aspect 4 of the present invention, in any of aspects 1 to 3, is provided with a location acquisition unit that acquires a current location of the own terminal, and the receiving unit acquires, along with the other terminal holder status, location information indicating the location of the communication terminal corresponding to the other terminal holder status, and the non-normal state determination unit determines whether or not an area including the communication terminals included in the network is in an abnormal state for each of the areas based on whether or not the rate at which the change over time in the own terminal holder status or the other terminal holder status corresponding to the communication terminal included in the area has changed to a predetermined value exceeds a threshold value when the area including the communication terminals included in the network is divided into a plurality of zones.

[0081] According to the above configuration, it is possible to determine whether or not an abnormal state exists for each area.

[0082] The determination device according to aspect 5 of the present invention, in any one of aspects 1 to 4, includes an evacuation route derivation unit that derives an evacuation route from the current position of the terminal using a map of the area when the non-normal state determination unit determines that the device is in a non-normal state, and a display unit that displays the evacuation route.

[0083] According to the above configuration, when an abnormal state occurs, an evacuation route can be presented to the holder.

[0084] In the determination device according to aspect 6 of the present invention, in any one of aspects 1 to 5, the evacuation route derivation unit derives the evacuation route using a congestion degree for each area derived from the number of communication terminals included in the area.

[0085] According to the above configuration, an evacuation route that the holder can use to quickly escape can be presented.

[0086] A determination system according to aspect 7 of the present invention includes the determination device and a plurality of communication terminals capable of communicating with the determination device using short-range wireless communication, wherein the determination device and the plurality of communication terminals form a network capable of communicating with each other using the short-range wireless communication, and the communication terminal includes a sensor that detects the movement of the own terminal, a holder status determination unit that determines a holder status of the own terminal, which is the movement state of the holder of the own terminal, from the detection result of the sensor, a receiving unit that receives other terminal holder status, which is the movement state of the holder of each of the other communication terminals included in the network, directly from one or more other communication terminals included in the network or via another communication terminal included in the network, and a transmitting unit that transmits the holder status of the own terminal and the holder status of the other terminal received by the own terminal to one or more other communication terminals included in the network.

[0087] A determination method according to aspect 8 of the present invention is a determination method by a determination device which is one of the communication terminals included in a network composed of communication terminals which can communicate with each other using short-range wireless communication, and the determination device is equipped with a sensor which detects the movement of the own terminal, and includes: a holder state determination step of determining a own terminal holder state, which is the movement state of the own terminal holder, from the detection result of the sensor; a receiving step of receiving other terminal holder states, which are the movement states of the holders of each of the other communication terminals included in the network, directly from one or more other communication terminals included in the network or via another communication terminal included in the network; and a non-normal state determination step of determining that an area including a communication terminal corresponding to the own terminal holder state or the other terminal holder state which has changed over time due to a predetermined change is in a non-normal state when the proportion of the own terminal holder state and the received other terminal holder states which have changed over time that exceeds a threshold value.

[0088] The determination device according to each aspect of the present invention may be realized by a computer. In this case, the control program of the determination device that causes the computer to operate as each part (software element) of the determination device to realize the determination device, and the computer-readable recording medium on which the control program is recorded, also fall within the scope of the present invention.

[0089] The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope of the claims. Embodiments obtained by appropriately combining the technical means disclosed in different embodiments are also included in the technical scope of the present invention. [Explanation of symbols]

[0090] 1. Mobile communication terminal (communication terminal, judgment device) 10 Control section 11 Sensors 12 Receiving section 13 Transmitter 14 Display section 110 Communication control section 120 Owner status determination unit 130 Abnormal state determination unit 140 Location information acquisition unit (location acquisition unit) 150 Evacuation route guidance section 160 Evacuation route display section 200 Received data 210 Map Data

Claims

1. A determination device that is one of communication terminals included in a network configured by communication terminals that can communicate with each other using short-range wireless communication, A sensor that detects the movement of the terminal; a holder state determination unit that determines a holder state of the terminal, which is a state of the movement of the holder of the terminal, based on a detection result of the sensor; a receiving unit that receives other terminal owner status, which is a state of movement of each owner of other communication terminals included in the network, directly from one or more other communication terminals included in the network or via another communication terminal included in the network; a non-normal state determination unit that, when the proportion of the communication terminal corresponding to the own terminal owner state or the other terminal owner state in which a time change has become a specified change exceeds a threshold value, determines that an area including the communication terminal corresponding to the own terminal owner state or the other terminal owner state in which a time change has become a specified change is in a non-normal state.

2. a transmission unit that transmits the own terminal owner status and the other terminal owner status received by the own terminal to one or more other communication terminals included in the network; The determination device according to claim 1 , wherein the transmission unit transmits a determination result to the other communication terminal when the abnormal state determination unit determines that the communication terminal is in the abnormal state.

3. the holder state determination unit determines, as a holder state of the terminal itself, whether the holder is in a stopped state, a walking state, a running state, or a fallen state; The abnormal state determination unit is configured to determine whether a time change in the state of the user of the own terminal and the state of the user of the other terminal occurs. From stop to run, From stopping to falling, From walking to stopping, From walking to running, Falling from walking, Stop from running, Falling from running, Running from a fall, The determination device according to claim 1 , wherein the device determines that the abnormal state exists when a ratio of any one of the above exceeds the threshold value.

4. A location acquisition unit that acquires a current location of the terminal is provided, the receiving unit acquires, together with the other-terminal owner status, location information indicating a location of a communication terminal corresponding to the other-terminal owner status; The determination device of claim 1, wherein the abnormal state determination unit determines whether or not an area including the communication terminals included in the network is abnormal based on whether or not the rate at which the time change in the own terminal owner state or the other terminal owner state corresponding to the communication terminals included in the area exceeds a threshold when the area including the communication terminals included in the network is divided into a plurality of zones.

5. an evacuation route deriving unit that derives an evacuation route from a current position of the terminal by using a map of the area when the abnormal state determination unit determines that the terminal is in an abnormal state; The determination device according to claim 4 , further comprising: a display unit that displays the evacuation route.

6. The determination device according to claim 5 , wherein the evacuation route deriving unit derives the evacuation route by using a congestion degree for each of the areas derived from the number of the communication terminals included in the area.

7. A determination device according to any one of claims 1 to 6, a plurality of communication terminals capable of communicating with the determination device using short-range wireless communication; the determination device and the plurality of communication terminals configure a network capable of communicating with each other using the short-range wireless communication, The communication terminal includes: A sensor that detects the movement of the terminal; a holder state determination unit that determines a holder state of the terminal, which is a state of the movement of the holder of the terminal, based on a detection result of the sensor; a receiving unit that receives other terminal owner status, which is a state of movement of each owner of other communication terminals included in the network, directly from one or more other communication terminals included in the network or via another communication terminal included in the network; a transmission unit that transmits the own terminal owner status and the other terminal owner status received by the own terminal to one or more other communication terminals included in the network.

8. A determination method by a determination device that is one of communication terminals included in a network configured by communication terminals that can communicate with each other using short-range wireless communication, comprising: The determination device includes a sensor that detects the motion of the terminal; a holder state determination step of determining a holder state of the terminal, which is a state of the movement of the holder of the terminal, based on a detection result of the sensor; A receiving step of receiving other terminal holder status, which is a movement status of a holder of each of the other communication terminals included in the network, directly from one or more other communication terminals included in the network or via another communication terminal included in the network; a non-normal state determination step of determining that an area including a communication terminal corresponding to the own terminal holder state or the other terminal holder state in which a temporal change has become a specified change is in a non-normal state when the proportion of the own terminal holder state and the received other terminal holder state in which a temporal change has become a specified change exceeds a threshold value.

9. A control program for causing a computer to function as the determination device according to claim 1, the control program causing a computer to function as the holder state determination unit and the abnormal state determination unit.

10. A computer-readable recording medium having the control program according to claim 9 recorded thereon.

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