Management device and control method

Abstract

To decide a range of influence of an emergency, and immediately make contact with a user within the range of influence.SOLUTION: A management device comprises: a reception unit for receiving, from at least one communication terminal equipped with a first wireless communication system, an audio signal and position information by means of the first wireless communication system; a determination unit for determining whether or not a signal indicating an emergency has been received from the at least one communication terminal on the basis of the audio signal of the communication terminal received by the reception unit; a decision unit that, if the determination unit determines that an emergency has occurred, decides a range of influence of the emergency on the basis of a positional relationship with the at least one communication terminal; an identification unit for identifying, from the range of influence of the emergency decided by the decision unit, a transmission destination communication terminal to which a control signal including an emergency signal according to the emergency is to be transmitted; and a transmission unit for transmitting, by means of the first wireless communication system, the control signal to the transmission destination communication terminal identified by the identification unit.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a management device and a control method. [Background technology]

[0002] There are known techniques for determining whether a user carrying a wireless communication device is in an emergency. For example, Patent Document 1 describes a technique for notifying a third party that an emergency has occurred to the user when it is determined that the user is in an emergency. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Special Publication No. 2013-518501 Summary of the Invention [Problem to be solved by the invention]

[0004] In a wireless communication system, when an emergency occurs, it is desirable to identify the area affected by the emergency, identify users located within the area affected, and control the system so that users can be contacted immediately.

[0005] An object of the present invention is to provide a management device and a control method that determine the extent of the impact of an emergency and control so that users within the impact area can be contacted immediately. [Means for solving the problem]

[0006] The management device of the present invention comprises a receiving unit that receives an audio signal and location information from at least one communication terminal equipped with a first wireless communication method using the first wireless communication method; a judgment unit that determines whether a signal indicating an emergency has been received from at least one of the communication terminals based on the audio signal of the communication terminal received by the receiving unit; a determination unit that, when the judgment unit determines that an emergency has occurred, determines the range of impact of the emergency based on the positional relationship of at least one of the communication terminals; an identification unit that identifies a destination communication terminal to which a control signal including an emergency signal corresponding to the emergency is to be sent from the range of impact of the emergency determined by the determination unit; and a transmission unit that transmits the control signal to the destination communication terminal identified by the identification unit using the first wireless communication method.

[0007] The control method of the present invention includes the steps of receiving an audio signal and location information from at least one communication terminal equipped with a first wireless communication method using the first wireless communication method; determining whether or not a signal indicating an emergency has been received from at least one of the communication terminals based on the audio signal received from the communication terminal; if it is determined that an emergency has occurred, determining the range of impact of the emergency based on the positional relationship of at least one of the communication terminals; identifying a destination communication terminal to which a control signal including an emergency signal corresponding to the emergency is to be sent from the determined range of impact of the emergency; and transmitting the control signal to the identified destination communication terminal using the first wireless communication method. [Effects of the Invention]

[0008] According to the present invention, the extent of the impact of an emergency can be determined and users within the extent of the impact can be contacted immediately. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a diagram illustrating an example of the configuration of a wireless communication system according to an embodiment. [Figure 2] FIG. 2 is a block diagram illustrating an example of the configuration of a management device according to the embodiment. [Figure 3] FIG. 3 is a block diagram illustrating an example of the configuration of a communication terminal according to the embodiment. [Figure 4] FIG. 4 is a block diagram illustrating an example of the configuration of an operator terminal according to the embodiment. [Figure 5] FIG. 5 is a sequence diagram showing a processing flow of the wireless communication system according to the embodiment. [Figure 6] FIG. 6 is a sequence diagram showing a processing flow of the wireless communication system according to the embodiment. [Figure 7] FIG. 7 is a flowchart showing the flow of processing by the management device according to the embodiment. [Figure 8] FIG. 8 is a diagram for explaining a method for determining whether or not a plurality of communication terminals according to the embodiment are in an emergency state. [Figure 9] FIG. 9 is a diagram for explaining a method for determining the extent of impact of an emergency situation according to the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. Note that the present invention is not limited to this embodiment, and in the following embodiments, the same components are designated by the same reference numerals, and redundant explanations will be omitted.

[0011] [Embodiment] (wireless communication system) An example of the configuration of a wireless communication system according to an embodiment will be described with reference to Fig. 1. Fig. 1 is a diagram showing an example of the configuration of a wireless communication system according to an embodiment.

[0012] As shown in Fig. 1, the wireless communication system 1 includes a management device 10, communication terminals 12-1, 12-2, 12-3, 12-4, 12-5, base stations 14-1, 14-2, and an operator terminal 16. In the example shown in Fig. 1, the wireless communication system 1 includes five communication terminals, communication terminals 12-1 to 12-5, but this does not limit the present invention. Communication terminals 12-1 to 12-5 may also be collectively referred to as communication terminals 12.

[0013] The wireless communication system 1 is a wireless communication system that supports a first wireless communication method and a second wireless communication method. The first wireless communication method is a wireless communication method that supports communication standards such as 4G (fourth generation mobile communication system) and 5G (fifth generation mobile communication system). The second wireless communication method is a wireless communication method that supports digital business radio standards such as APCO-P25 (Association of Public safety Communications Officials international Project 25) and NXDN (registered trademark). The first wireless communication method and the second wireless communication method are not limited to these.

[0014] The management device 10 determines whether the communication terminal 12 is in an emergency based on information transmitted from the communication terminal 12 via the base station 14-1 using the first wireless communication method. An emergency is a situation in which the user of the communication terminal 12 needs to be rescued after being attacked by a robber or the like. An emergency is not limited to an attack by a robber or the like. If the management device 10 determines that the communication terminal 12 is in an emergency, it controls communication using the second wireless communication method that the communication terminal performs via the base station 14-2. Specifically, the management device 10 identifies the communication terminal 12 in the emergency, determines the extent of the impact of the emergency, and controls communication using the second wireless communication method for the communication terminals 12 of users within the impact area. More specifically, the management device 10 establishes communication between the communication terminals 12 of users within the impact area and the operator terminal 16, and initiates a call between the user and the operator.

[0015] (Management device) An example of the configuration of a management device according to an embodiment will be described with reference to Fig. 2. Fig. 2 is a block diagram showing an example of the configuration of a management device according to an embodiment.

[0016] 2, the management device 10 includes a receiving unit 20, a transmitting unit 22, a storage unit 24, and a control unit 26. The management device 10 is, for example, a server device located in a control center that monitors communications using the first wireless communication method.

[0017] The receiving unit 20 receives various types of information in the first wireless communication system under the control of the communication control unit 30. The receiving unit 20 acquires, for example, a voice signal and location information from the communication terminal 12 of the wireless communication system 1 in the first wireless communication system.

[0018] The transmitter 22 transmits various types of information in the first wireless communication method under the control of the communication control unit 30. For example, the transmitter 22 transmits a control signal to the communication terminal 12 of the wireless communication system 1 in the first wireless communication method for controlling communication of the communication terminal 12 in the second wireless communication method.

[0019] The storage unit 24 stores various types of information. The storage unit 24 stores information such as the contents of calculations performed by the control unit 26 and programs. The storage unit 24 includes at least one of a RAM (Random Access Memory), a main storage device such as a ROM (Read Only Memory), and an external storage device such as an HDD (Hard Disk Drive).

[0020] The control unit 26 controls each unit of the management device 10. The control unit 26 has, for example, an information processing device such as a CPU (Central Processing Unit) or an MPU (Micro Processing Unit), and a storage device such as a RAM or a ROM. The control unit 26 executes a program that controls the operation of the management device 10 according to the present invention. The control unit 26 may be realized by an integrated circuit such as an ASIC (Application Specific Integrated Circuit) or an FPGA (Field Programmable Gate Array). The control unit 26 may be realized by a combination of hardware and software.

[0021] The control unit 26 includes a communication control unit 30, a determination unit 32, a decision unit 34, and an identification unit 36.

[0022] The communication control unit 30 controls the receiving unit 20 and the transmitting unit 22. The communication control unit 30 controls the receiving unit 20 to receive various pieces of information transmitted to the management device 10 in the first wireless communication method. The communication control unit 30 controls the transmitting unit 22 to transmit various pieces of information to various external devices in the first wireless communication method.

[0023] The determination unit 32 determines whether or not an emergency has occurred in the communication terminal 12. The determination unit 32 determines whether or not an emergency has occurred in the communication terminal 12 based on a voice signal received from the communication terminal 12. Details of the determination unit 32 will be described later.

[0024] The determination unit 34 determines the extent of impact of the emergency. The determination unit 34 determines the extent of impact of the emergency that has occurred in the communication terminal 12 based on the positional relationship of the communication terminal 12 determined by the determination unit 32. The determination unit 34 determines the extent of impact depending on the type of emergency that has occurred in the communication terminal 12. Details of the determination unit 34 will be described later.

[0025] The identifying unit 36 ​​identifies a destination communication terminal to which a control signal for controlling communication by the second wireless communication system is to be transmitted from among the communication terminals 12. The identifying unit 36 ​​identifies the destination communication terminal based on the range of influence determined by the determining unit 34. Details of the identifying unit 36 ​​will be described later.

[0026] (Communication terminal) A configuration example of a communication terminal according to an embodiment will be described with reference to Fig. 3. Fig. 3 is a block diagram showing a configuration example of a communication terminal according to an embodiment.

[0027] As shown in FIG. 3, the communication terminal 12 includes a first communication unit 40, a second communication unit 42, an input unit 44, a display unit 46, an audio output unit 48, a memory unit 50, a GNSS (Global Navigation Satellite System) 52, and a control unit 54.

[0028] The communication terminal 12 is a communication terminal that supports two communication methods, a first wireless communication method and a second wireless communication method. The communication terminal 12 is, for example, a business wireless communication device, but is not limited to this.

[0029] The first communication unit 40 communicates with the base station 14-1 using a first wireless communication method. For example, the first communication unit 40 transmits an audio signal related to the voice input to the input unit 44 and information related to the current location of the communication terminal 12 to the base station 14-1 using the first wireless communication method. The first communication unit 40 receives a control signal for the second communication unit 42 from the management device 10 via the base station 14-1 using the first wireless communication method.

[0030] The second communication unit 42 communicates with the base station 14-2 in the second wireless communication system. The second communication unit 42 transmits, for example, a voice signal relating to the voice of the user of the communication terminal 12 input to the input unit 44 to the base station 14-2 in the second wireless communication system.

[0031] The input unit 44 accepts various input operations for the communication terminal 12. The input unit 44 outputs an operation signal corresponding to the accepted input operation to the control unit 54. The input unit 44 includes, for example, a touch panel, a button, a switch, a microphone, etc. When a touch panel is used as the input unit 44, the input unit 44 is disposed on the display unit 46.

[0032] The display unit 46 displays various images. The display unit 46 is, for example, a display including a liquid crystal display (LCD) or an organic electroluminescence (EL) display.

[0033] The audio output unit 48 is a speaker that outputs various types of audio. For example, the audio output unit 48 outputs the voice of the operator of the operator terminal 16. For example, the audio output unit 48 outputs the voice of the other party on the call.

[0034] The storage unit 50 stores various types of information. The storage unit 50 stores information such as the contents of calculations performed by the control unit 54 and programs. The storage unit 50 includes at least one of, for example, a RAM, a main storage device such as a ROM, and an external storage device such as an HDD.

[0035] The GNSS receiving unit 52 is configured with a GNSS receiver that receives GNSS signals from GNSS satellites, etc. The GNSS receiving unit 52 outputs the received GNSS signals to the control unit 54.

[0036] The control unit 54 controls each unit of the communication terminal 12. The control unit 54 has, for example, an information processing device such as a CPU or an MPU, and a storage device such as a RAM or a ROM. The control unit 54 executes a program that controls the operation of the communication terminal 12 according to the present invention. The control unit 54 may be realized by, for example, an integrated circuit such as an ASIC or an FPGA. The control unit 54 may be realized by a combination of hardware and software.

[0037] The control unit 54 acquires an audio signal related to the audio input to the input unit 44. The control unit 54 calculates position information related to the current position of the communication terminal 12 based on the GNSS signal received by the GNSS receiving unit 52.

[0038] (operator terminal) An example of the configuration of an operator terminal according to the embodiment will be described with reference to Fig. 4. Fig. 4 is a block diagram showing an example of the configuration of an operator terminal according to the embodiment.

[0039] As shown in FIG. 4, the operator terminal 16 includes a communication unit 60, an input unit 62, a display unit 64, a voice output unit 66, a storage unit 68, and a control unit .

[0040] The operator terminal 16 is configured to be able to receive various types of information transmitted to the base station 14-1 in the first wireless communication system and various types of information transmitted to the base station 14-2 in the second wireless communication system. The operator terminal 16 is located, for example, in a control center that monitors the wireless communication system 1. The operator terminal 16 is, for example, an information processing device such as a PC (Personal Computer).

[0041] The communication unit 60 communicates with the management device 10 and the communication terminal 12. The communication unit 60 receives various information from the management device 10 and the communication terminal 12. For example, the communication unit 60 receives emergency information from the management device 10 indicating that an emergency has occurred at the communication terminal 12. For example, the communication unit 60 receives an audio signal related to the audio of the communication terminal 12 from the communication terminal 12.

[0042] The input unit 62 accepts various input operations to the operator terminal 16. The input unit 62 outputs an operation signal corresponding to the accepted input operation to the control unit 70. The input unit 62 includes, for example, a keyboard, a mouse, a touch panel, buttons, switches, a microphone, etc. When a touch panel is used as the input unit 62, the input unit 62 is disposed on the display unit 64.

[0043] The display unit 64 displays various images. The display unit 64 is, for example, a display including a liquid crystal display, an organic EL display, or the like.

[0044] The audio output unit 66 is a speaker that outputs various types of audio. For example, the audio output unit 66 outputs audio around the communication terminal 12 that is acquired by the communication terminal 12. For example, the audio output unit 66 outputs the audio of the user of the communication terminal 12.

[0045] The storage unit 68 stores various types of information. The storage unit 68 stores information such as the contents of calculations performed by the control unit 70 and programs. The storage unit 68 includes at least one of, for example, a RAM, a main storage device such as a ROM, and an external storage device such as an HDD.

[0046] The control unit 70 controls each unit of the operator terminal 16. The control unit 70 has, for example, an information processing device such as a CPU or an MPU, and a storage device such as a RAM or a ROM. The control unit 70 executes a program that controls the operation of the operator terminal 16 according to the present invention. The control unit 70 may be realized by, for example, an integrated circuit such as an ASIC or an FPGA. The control unit 70 may also be realized by a combination of hardware and software.

[0047] [Processing content] (Processing of wireless communication systems) The processing content of the wireless communication system according to the embodiment will be described with reference to Fig. 5. Fig. 5 is a sequence diagram showing the flow of processing of the wireless communication system according to the embodiment.

[0048] 5 shows the processing when communication terminals 12 include three communication terminals, 12-1 to 12-3, but this does not limit the present invention. The processing shown in Fig. 5 shows the processing flow from when it is determined that an emergency has occurred until communication terminals 12-1 to 12-3 transition to emergency mode.

[0049] The control unit 54 of the communication terminal 12-1 acquires surrounding audio and location information related to the current location (step S10). The control unit 54 of the communication terminal 12-1 controls the first communication unit 40 to transmit an audio signal related to the acquired audio and the location information to the management device 10 using the first wireless communication method (step S12). The control unit 54 of the communication terminal 12-1 constantly executes the processes of steps S10 and S12.

[0050] The control unit 54 of the communication terminal 12-2 acquires surrounding audio and location information related to the current location (step S14). The control unit 54 of the communication terminal 12-2 controls the first communication unit 40 to transmit an audio signal related to the acquired audio and the location information to the management device 10 using the first wireless communication method (step S16). The control unit 54 of the communication terminal 12-2 constantly executes the processes of steps S14 and S16.

[0051] The control unit 54 of the communication terminal 12-3 acquires surrounding audio and location information related to the current location (step S18). The control unit 54 of the communication terminal 12-3 controls the first communication unit 40 to transmit an audio signal related to the acquired audio and the location information to the management device 10 using the first wireless communication method (step S20). The control unit 54 of the communication terminal 12-3 constantly executes the processes of steps S18 and S20.

[0052] The receiving unit 20 of the management device 10 receives the voice signals and the location information from the communication terminals 12-1, 12-2, and 12-3 under the control of the communication control unit 30 (step S22).

[0053] The determination unit 32 of the management device 10 executes an emergency determination process to determine whether an emergency has occurred in communication terminals 12-1 to 12-3 (step S24). Details of the emergency determination process will be described later. Here, it is assumed that an emergency has occurred in communication terminals 12-1 and 12-2, but that an emergency has not occurred in communication terminal 12-3. The determination unit 32 of the management device 10 generates determination information regarding the emergency determination result. The transmission unit 22 of the management device 10 transmits the determination information to the operator terminal 16 under the control of the communication control unit 30 (step S26).

[0054] The communication unit 60 of the operator terminal 16 receives the determination information from the management device 10 under the control of the control unit 70 (step S28). The control unit 70 of the operator terminal 16 causes the display unit 64 to display the determination information (step S30). This allows the operator of the operator terminal 16 to know which communication terminal 12 has been determined to be in an emergency.

[0055] The transmitter 22 of the management device 10, under the control of the communication control unit 30, transmits a control signal to the communication terminal 12-1 using the first wireless communication method to control communication by the communication terminal 12-1 using the second wireless communication method (step S32). The transmitter 22 of the management device 10, under the control of the communication control unit 30, transmits a control signal to the communication terminal 12-2 using the first wireless communication method to control communication by the communication terminal 12-2 using the second wireless communication method (step S34). The management device 10 may include a command to cause the communication terminals 12-1 and 12-2 to execute a function according to the type and situation of the emergency. For example, the management device 10 may include in the control signal a command to the communication terminals 12-1 and 12-2 not to output sound related to the voice signal received from the operator terminal 16. This prevents the sound from being heard by people around the communication terminals 12-1 and 12-2. The management device 10 may also include a command to execute another function in the control signal.

[0056] The first communication unit 40 of the communication terminal 12-1 receives a control signal from the management device 10 under the control of the control unit 54 (step S36). The control unit 54 of the communication terminal 12-1 transitions the communication terminal 12-1 to an emergency mode (emergency situation mode) in accordance with the control signal received from the management device 10 (step S38). Upon transitioning to the emergency mode, the communication terminal 12 automatically starts transmitting and receiving audio signals using the second wireless communication method. The communication terminal 12 that has transitioned to the emergency mode starts a process of constantly transmitting location information of its current location using both the first wireless communication method and the second wireless communication method.

[0057] The first communication unit 40 of the communication terminal 12-2 receives a control signal from the management device 10 under the control of the control unit 54 (step S40). The control unit 54 of the communication terminal 12-2 transitions the communication terminal 12-2 to the emergency mode in accordance with the control signal received from the management device 10 (step S42).

[0058] The identification unit 36 ​​of the management device 10 identifies a communication terminal in the vicinity of communication terminal 12-1 or communication terminal 12-2 based on the location information of each communication terminal 12 (step S44). In this embodiment, "in the vicinity" refers to, for example, a range within 100 meters, but is not limited to this. Here, it is assumed that communication terminal 12-3 is identified as a communication terminal in the vicinity of communication terminal 12-1 or communication terminal 12-2.

[0059] The transmitter 22 of the management device 10 transmits an alarm signal and a control signal for controlling communication of the communication terminal 12-3 in the second wireless communication method to the communication terminal 12-3 in the first wireless communication method under the control of the communication control unit 30 (step S46). The alarm signal is a signal for notifying the user of the communication terminal 12-3 that there is a communication terminal in an emergency nearby.

[0060] The first communication unit 40 of the communication terminal 12-3 receives the alarm signal and the control signal from the management device 10 under the control of the control unit 54 (step S48).

[0061] The control unit 54 of the communication terminal 12-3 controls the audio output unit 48 to output an alarm in accordance with the alarm signal received by the first communication unit 40 (step S50). The control unit 54 may also control the display unit 46 to display information indicating that a communication terminal 12 in an emergency is present nearby. The control unit 54 of the communication terminal 12-3 transitions the communication terminal 12-3 to emergency mode in accordance with the control signal received from the management device 10 (step S52).

[0062] In the wireless communication system 1, by executing the process of FIG. 5, the communication terminals 12-1 to 12-3 transition to the emergency mode.

[0063] (Processing of wireless communication systems) The processing content of the wireless communication system according to the embodiment will be described with reference to Fig. 6. Fig. 6 is a sequence diagram showing the flow of processing of the wireless communication system according to the embodiment.

[0064] The process shown in FIG. 6 indicates the process from when the communication terminals 12-1 to 12-3 transition to the emergency mode until they receive a voice from the operator of the operator terminal 16.

[0065] The control unit 54 of the communication terminal 12-1 acquires the voice input by the user to the input unit 44 and location information related to the current location (step S60). The control unit 54 of the communication terminal 12-1 controls the first communication unit 40 and the second communication unit 42 to transmit a voice signal related to the acquired voice to the management device 10 using the second wireless communication method, and transmits the location information to the management device 10 using the first wireless communication method (step S62). The control unit 54 of the communication terminal 12-1 executes the processes of steps S60 and S62 during the emergency mode.

[0066] The control unit 54 of the communication terminal 12-2 acquires the voice input by the user to the input unit 44 and location information related to the current location (step S64). The control unit 54 of the communication terminal 12-2 controls the first communication unit 40 and the second communication unit 42 to transmit an audio signal related to the acquired voice to the management device 10 using the second wireless communication method, and transmits the location information to the management device 10 using the first wireless communication method (step S66). The control unit 54 of the communication terminal 12-2 executes the processes of steps S64 and S66 while in the emergency mode.

[0067] The control unit 54 of the communication terminal 12-3 acquires the voice input by the user to the input unit 44 and location information related to the current location (step S68). The control unit 54 of the communication terminal 12-3 controls the first communication unit 40 and the second communication unit 42 to transmit an audio signal related to the acquired voice to the management device 10 using the second wireless communication method, and transmits the location information to the management device 10 using the first wireless communication method (step S70). The control unit 54 of the communication terminal 12-3 executes the processes of steps S68 and S70 while in the emergency mode.

[0068] The receiving unit 20 of the management device 10 receives the voice signals and the location information from the communication terminals 12-1, 12-2, and 12-3 under the control of the communication control unit 30 (step S72). The transmitting unit 22 of the management device 10 transmits the voice signals and the location information acquired from the communication terminals 12-1 to 12-3 to the operator terminal 16 under the control of the communication control unit 30 (step S74).

[0069] The communication unit 60 of the operator terminal 16 receives the voice signal and the location information from the management device 10 under the control of the control unit 70 (step S76). The control unit 70 of the operator terminal 16 selects the communication terminal 12 that will output the voice (step S78). The control unit 70 of the operator terminal 16 selects the communication terminal 12 that will output the voice, for example, based on input information input by the operator to the input unit 62. That is, the operator of the operator terminal 16 can arbitrarily select the communication terminal 12 that will output the voice. In the process shown in FIG. 6, it is assumed that communication terminal 12-1 has been selected.

[0070] The control unit 70 of the operator terminal 16 causes the voice of the user of the communication terminal 12-1 to be output from the voice output unit 66 (step S80). The control unit 70 of the operator terminal 16 acquires the voice of the operator input to the input unit 62 (step S82). The control unit 70 of the operator terminal 16 transmits a voice signal related to the acquired voice of the operator to the communication terminal 12-1 using the second wireless communication system (step S84).

[0071] The second communication unit 42 of the communication terminal 12-1 receives a voice signal from the operator terminal 16 under the control of the control unit 54 (step S86). The control unit 54 of the communication terminal 12-1 causes the voice of the operator of the operator terminal 16 to be output from the voice output unit 48 (step S88). This enables a call between the user of the communication terminal 12-1 and the operator of the operator terminal 16.

[0072] In the process shown in FIG. 6, when communication terminal 12-2 or communication terminal 12-3 is selected in step S78, a call between the user of communication terminal 12-2 or communication terminal 12-3 and the operator of operator terminal 16 becomes possible.

[0073] (Management device processing) The processing content of the management device according to the embodiment will be described with reference to Fig. 7. Fig. 7 is a flowchart showing the flow of processing of the management device according to the embodiment.

[0074] The communication control unit 30 controls the receiving unit 20 to receive voice signals and location information relating to the current location from each communication terminal 12 (step S100), and then the process proceeds to step S102.

[0075] The determination unit 32 determines whether an emergency has occurred in the communication terminal 12 (step S102). Specifically, the determination unit 32 determines that an emergency has occurred when the audio signal contains threatening sounds, gunshots, screams, or sounds calling for help. An emergency indicates that the communication terminal 12 is in an emergency state, such as when danger is imminent for the user of the communication terminal 12 or the area around the communication terminal 12. The determination unit 32 determines the type of emergency based on the audio, for example. If it is determined that an emergency has occurred (step S102; Yes), the process proceeds to step S104. If it is not determined that an emergency has occurred (step S102; No), the process proceeds to step S122.

[0076] If the determination in step S102 is Yes, the determination unit 32 determines whether the plurality of nearby communication terminals 12 are in an emergency (step S104). Specifically, the determination unit 32 determines whether the plurality of nearby terminals are in an emergency based on the location information of each communication terminal 12. FIG. 8 is a diagram for explaining a method for determining whether the plurality of communication terminals are in an emergency according to the embodiment. FIG. 8 shows communication terminals 12-1 to 12-5. In the example shown in FIG. 8, the determination unit 32 determines that the plurality of nearby communication terminals 12, that is, communication terminals 12-1 and 12-2, are in an emergency. In this embodiment, being in proximity means, for example, within 20 m, but is not limited thereto. If it is determined that the plurality of nearby communication terminals 12 are in an emergency (step S104; Yes), the process proceeds to step S106. If it is not determined that the plurality of nearby communication terminals 12 are in an emergency (step S104; No), the process proceeds to step S108.

[0077] If the determination in step S104 is Yes, the determination unit 32 calculates the reliability (step S106). In this embodiment, the reliability refers to a degree indicating the degree of credibility that an emergency has occurred in the communication terminal 12. For example, the determination unit 32 calculates a higher reliability as the number of communication terminals 12 determined to be in an emergency increases. For example, the determination unit 32 calculates a higher reliability as the volume of the voice related to the voice signal received from the communication terminal 12 determined to be in an emergency increases. For example, the determination unit 32 calculates a higher reliability as the recognition rate of threatening voices and voices calling for help related to the voice signal received from the communication terminal 12 determined to be in an emergency increases. The determination unit 32 calculates the reliability in three levels, for example, “high,” “medium,” and “low.” The determination unit 32 may calculate the reliability, for example, as a numerical value. In this embodiment, the wireless communication system 1 may perform a process such that a communication terminal 12 with a higher reliability is given priority in communicating with the operator terminal 16. The determination unit 32 may calculate the reliability using other methods. Then, the process proceeds to step S110.

[0078] If the determination in step S104 is No, the determination unit 32 sets the reliability to a reference value (step S108). The user of the management device 10 may set the reliability to an arbitrary value. Then, the process proceeds to step S110.

[0079] The determination unit 34 determines the extent of influence of the emergency (step S110). Specifically, the determination unit 34 determines the extent of influence of the emergency depending on, for example, the positional relationship of the communication terminals 12. FIG. 9 is a diagram for explaining a method for determining the extent of influence of the emergency according to the embodiment. In the example shown in FIG. 9, the determination unit 34 determines the extent of influence of the emergency based on the positional relationship between communication terminal 12-1, which has been determined to be an emergency, and communication terminal 12-2. The determination unit 34 calculates, for example, the barycentric coordinate G of communication terminal 12-1 and communication terminal 12-2 based on the positional information of communication terminal 12-1 and positional information of communication terminal 12-2. The determination unit 34 calculates the variance of the positional information of communication terminal 12-1 and communication terminal 12-2 based on, for example, the positional information of communication terminal 12-1 and positional information of communication terminal 12-2. Then, the determination unit 34 calculates the extent of influence R based on the calculated barycentric coordinate G and variance. The determination unit 34 may, for example, perform weighting according to the type of emergency and change the range of influence R according to the type of emergency. The determination unit 34 may also determine the range of influence of the emergency using other methods. Then, the process proceeds to step S112.

[0080] The identifying unit 36 ​​identifies a destination communication terminal to which a control signal for controlling communication in the second wireless communication system is to be transmitted (step S112). Specifically, the identifying unit 36 ​​identifies the destination communication terminal based on the range of influence determined by the determining unit 34. In the example shown in FIG. 9, communication terminals 12-1, 12-2, and 12-3 are located within range of influence R. In this case, the identifying unit 36 ​​identifies three communication terminals, communication terminals 12-1 to 12-3, of communication terminals 12-1 to 12-5, as destination communication terminals. Then, the process proceeds to step S114.

[0081] The determination unit 32 determines whether or not there is a communication terminal that is not in an emergency among the destination communication terminals (step S114). In the example shown in Fig. 9, the determination unit 32 determines that the communication terminal 12-3 located within the range of influence R is a communication terminal that is not in an emergency. If it is determined that there is a communication terminal that is not in an emergency (step S114; Yes), the process proceeds to step S116. If it is not determined that there is a communication terminal that is not in an emergency (step S114; No), the process proceeds to step S118.

[0082] If the determination in step S114 is Yes, the communication control unit 30 controls the transmission unit 22 to transmit an alarm signal to the communication terminal 12-3 in the first wireless communication system (step S116). As a result, the communication terminal 12-3 outputs an alarm indicating that a communication terminal 12 in an emergency is present nearby. Then, the process proceeds to step S118.

[0083] If the determination in step S114 is No, or after step S116, the communication control unit 30 controls the transmission unit 22 to transmit a control signal to the destination communication terminal in the first wireless communication method (step S118). Specifically, in the example shown in Fig. 9, the communication control unit 30 transmits a control signal for controlling communication in the second wireless communication method in the first wireless communication method to communication terminals 12-1 to 12-3. As a result, communication terminals 12-1 to 12-3 transition to emergency mode. Then, the process proceeds to step S120.

[0084] The communication control unit 30 controls the transmission unit 22 to transmit the determination information to the operator terminal 16 (step S120). Specifically, the communication control unit 30 controls the transmission unit 22 to transmit the determination information regarding the communication terminal 12 in an emergency state determined in step S102 to the operator terminal 16. This allows the operator of the operator terminal 16 to know which communication terminal 12 is in an emergency state.

[0085] The control unit 26 determines whether or not to end the process (step S122). Specifically, the control unit 26 determines to end the process when, for example, the operation of the communication terminal 12 included in the wireless communication system 1 has ended. If it is determined to end the process (step S122; Yes), the process of Fig. 7 ends. If it is not determined to end the process (step S122; No), the process returns to step S100.

[0086] As described above, in this embodiment, when the communication terminal 12 is determined to be in an emergency state, the communication terminal 12 determined to be in an emergency state can be automatically transitioned to emergency mode, thereby improving safety.

[0087] The components of each device shown in the figure are conceptual functional components and do not necessarily have to be physically configured as shown. In other words, the specific form of distribution and integration of each device is not limited to that shown in the figure, and all or part of them can be functionally or physically distributed and integrated in any unit depending on various loads and usage conditions. This distribution and integration configuration may also be performed dynamically.

[0088] Although the embodiments of the present invention have been described above, the present invention is not limited to the contents of these embodiments. Furthermore, the above-described components include those that can be easily imagined by a person skilled in the art, those that are substantially the same, and those that are within the so-called equivalent range. Furthermore, the above-described components can be combined as appropriate. Furthermore, various omissions, substitutions, or modifications of the components can be made without departing from the spirit of the above-described embodiments. [Explanation of symbols]

[0089] 1. Wireless communication systems 10 Management device 12. Communication terminals 14-1,14-2 Base station 16 Operator terminal 20 Receiving unit 22 Transmitter 24,50,68 Storage section 26,54,70 Control section 30 Communication control unit 32 Judgment section 34 Decision Section 36 Specific part 40 First Communications Department 42 Second Communications Department 44,62 Input section 46,64 Display section 48,66 Audio output section 52 GNSS receiver 60 Communications Department

Claims

1. a receiving unit that receives a voice signal and location information from at least one communication terminal that is equipped with a first wireless communication method using the first wireless communication method; a determination unit that determines whether a signal indicating an emergency has been received from at least one of the communication terminals based on the voice signal of the communication terminal received by the receiving unit; a determination unit that, when it is determined by the determination unit that an emergency has occurred, determines an extent of influence of the emergency based on a positional relationship of at least one of the communication terminals; an identification unit that identifies a destination communication terminal to which a control signal including an emergency signal corresponding to the emergency is to be transmitted from the range of influence of the emergency determined by the determination unit; a transmitting unit that transmits the control signal to the destination communication terminal identified by the identifying unit in the first wireless communication system; Equipped with the determination unit calculates a reliability of the emergency situation based on the voice signal received by the receiving unit, and in a call between the communication terminal and a terminal capable of transmission using a second wireless communication method different from the first wireless communication method, the higher the reliability, the higher the priority of the call. Management device.

2. the communication terminal includes a first communication unit that communicates using the first wireless communication method; a second communication unit that communicates by the second wireless communication method, the control signal is a signal for controlling communication of the communication terminal in the second wireless communication system; The management device according to claim 1 .

3. the identification unit identifies the communication terminal that is included in the range of influence of the emergency and is not determined to be in an emergency as the destination communication terminal; The management device according to claim 1 or 2.

4. The determination unit calculates the reliability to be higher as the volume of the audio signal received by the receiving unit increases. The management device according to claim 1 .

5. receiving a voice signal and location information from at least one communication terminal equipped with a first wireless communication method using the first wireless communication method; determining whether a signal indicating an emergency has been received from at least one of the communication terminals based on the received voice signals of the communication terminals; When it is determined that an emergency has occurred, determining an impact range of the emergency based on a positional relationship of at least one of the communication terminals; identifying a destination communication terminal to which a control signal including an emergency signal corresponding to the emergency is to be transmitted from the determined range of influence of the emergency; transmitting the control signal to the identified destination communication terminal in the first wireless communication system; Including, In the determining step, a reliability of the emergency situation is calculated based on the received voice signal, and in a call between the communication terminal and a terminal capable of transmission using a second wireless communication method different from the first wireless communication method, a call with a higher reliability is given priority. Control method.

Images