Management device and wireless mobile station

Abstract

To provide a technique for remotely controlling operation of a wireless mobile station in accordance with a state of a user carrying the wireless mobile station.SOLUTION: A monitor section 250 estimates an abnormality of a wireless mobile station based on a history of positional information received from the wireless mobile station by a communication section 210. A first instruction section 252 causes the communication section 210 to transmit a first instruction signal instructing the wireless mobile station to transmit an audio signal in a case where the monitor section 250 estimates an abnormality of the wireless mobile station. An analysis section 254 analyzes a response signal to the first instruction signal. A second instruction section 256 causes the communication section 210 to transmit a second instruction signal for instructing a change of operation of the wireless mobile station in a case where it is analyzed by the analysis section 254 that a predetermined condition is fulfilled.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a management technique, and more particularly to a management device and a wireless mobile station capable of communication. [Background technology]

[0002] In order to prevent taxis equipped with wireless mobile stations from remaining in locations where waiting is prohibited, a management device acquires location information from the wireless mobile stations and issues a warning instruction to wireless mobile stations that are remaining in inappropriate locations (for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2005-269001 A Summary of the Invention [Problem to be solved by the invention]

[0004] The management device can monitor the behavior of a user who owns the wireless mobile station by acquiring location information of the wireless mobile station. However, when it is predicted from the user's behavior that the user is in an emergency, it is difficult for the management device to appropriately control the operation of the wireless mobile station.

[0005] The present invention has been made in view of the above circumstances, and has an object to provide a technique for remotely controlling the operation of a wireless mobile station in accordance with the state of a user who possesses the wireless mobile station. [Means for solving the problem]

[0006] In order to solve the above problems, a management device of one embodiment of the present invention includes a communication unit that communicates with a wireless mobile station, a monitoring unit that estimates an abnormality in the wireless mobile station based on a history of location information received by the communication unit from the wireless mobile station, a first instruction unit that, when the monitoring unit estimates an abnormality in the wireless mobile station, causes the communication unit to send a first instruction signal instructing the wireless mobile station to transmit a voice signal, an analysis unit that, when the communication unit receives a response signal including a voice signal in response to the first instruction signal from the wireless mobile station, analyzes the response signal, and a second instruction unit that, when the analysis unit analyzes that the response signal satisfies a predetermined condition, causes the communication unit to send a second instruction signal for instructing a change in operation of the wireless mobile station.

[0007] Another aspect of the present invention is a wireless mobile station, which includes a communication unit that communicates with a management device, a location information acquisition unit that acquires location information of the wireless mobile station and causes the communication unit to transmit the location information, a response unit that causes the communication unit to transmit a response signal to the first instruction signal when the communication unit receives a first instruction signal from the management device to instruct the wireless mobile station to transmit a voice signal by the management device estimating an abnormality in the wireless mobile station based on a history of the location information, and a change unit that changes the operation of the wireless mobile station in response to the second instruction signal when the communication unit receives a second instruction signal from the management device to instruct a change in operation of the wireless mobile station based on a result of the management device analyzing the response signal.

[0008] Any combination of the above components, and any transformation of the present invention into a method, device, system, recording medium, computer program, etc., are also effective as aspects of the present invention. Effect of the Invention

[0009] According to the present invention, the operation of a wireless mobile station can be remotely controlled in accordance with the state of a user who owns the wireless mobile station. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is a diagram illustrating a configuration of a communication system according to an embodiment. [Diagram 2]FIG. 2 is a diagram illustrating a configuration of a wireless mobile station in FIG. [Diagram 3] FIG. 2 is a diagram illustrating a configuration of a management device in FIG. [Figure 4] 2 is a sequence diagram showing a communication procedure in the communication system of FIG. 1. [Diagram 5] 4 is a flowchart showing a communication procedure performed by the management device of FIG. 3. [Figure 6] 4 is a diagram showing a data structure of a table held in an analysis unit in FIG. 3. [Figure 7] 4 is a diagram showing the data structure of another table held in the analysis unit of FIG. 3. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Before describing this embodiment in detail, an overview will be given first. This embodiment relates to a communication system including a wireless mobile station and a management device. The wireless mobile station is carried by a user and is capable of communicating with other wireless mobile stations. The management device is capable of communicating with the wireless mobile station via a network and receives location information from the wireless mobile station. The management device estimates an abnormality in the wireless mobile station based on the history of the location information. When the management device estimates an abnormality in the wireless mobile station, it estimates the state of the wireless mobile station and changes the operation of the wireless mobile station according to the estimated state.

[0012] 1 shows a configuration of a communication system 1000. The communication system 1000 includes a network 10, a first wireless mobile station 100a, a second wireless mobile station 100b, ..., an N-th wireless mobile station 100n collectively referred to as wireless mobile stations 100, a management device 200, a peripheral organization server 300, and a service server 400.

[0013] The network 10 can perform at least one of wireless communication and wired communication. A known technology may be used for the network 10. The wireless mobile station 100 is a wireless device that is portable and used by a user. The wireless mobile station 100 can perform voice communication, for example, by PTT (Push to Talk). In PTT, when the PTT button of the wireless mobile station 100 is pressed down, the wireless mobile station 100 can transmit a voice signal. On the other hand, when the PTT button of the wireless mobile station 100 is not pressed down, the wireless mobile station 100 can receive a voice signal. For example, the first wireless mobile station 100a transmits a voice signal to the second wireless mobile station 100b, etc., via the network 10.

[0014] The management device 200 is a communication device used by an administrator of the communication system 1000. The management device 200 is capable of communicating with each wireless mobile station 100 via the network 10. The management device 200 estimates the state of the wireless mobile station 100 and changes the operation of the wireless mobile station 100 according to the state. These processes will be described in detail later. The surrounding organization server 300 is a server used by surrounding organizations such as police, fire, and emergency services. The service server 400 is a server used by service providers such as manufacturers and retailers. The management device 200 is capable of communicating with the surrounding organization server 300 and the service server 400 via the network 10.

[0015] 2 shows the configuration of the wireless mobile station 100. The wireless mobile station 100 includes a communication unit 110, a control unit 112, an operation unit 114, a microphone 116, a speaker 118, a positioning unit 120, and an LED (Light-Emitting Diode) 122. The control unit 112 also includes a location information acquisition unit 150, a response unit 152, and a change unit 154.

[0016] The communication unit 110 executes wireless communication. Therefore, the communication unit 110 can communicate with other wireless mobile stations 100 and the management device 200 via the network 10. The control unit 112 controls the operation of the wireless mobile station 100. The control unit 112 will be described in detail later.

[0017] The operation unit 114 is composed of buttons, a touch panel, etc., and accepts input from the user. Here, the button corresponds to a PTT button, and the operation unit 114 accepts an instruction to transmit talk by PTT when the PTT button is pressed down. On the other hand, the operation unit 114 accepts an instruction to end transmission by PTT when the PTT button is released. The operation unit 114 outputs the accepted input to the control unit 112. Also, the operation unit 114 may be something other than a PTT button.

[0018] The microphone 116 acquires voice. The microphone 116 converts the voice into an electrical signal, and outputs the electrical signal (hereinafter also referred to as "voice") to the control unit 112. For example, the microphone 116 acquires voice from the user while the PTT button is pressed down. The microphone 116 may also acquire voice under the control of the control unit 112. The speaker 118 outputs voice reproduced in the control unit 112. The speaker 118 may output a ringtone under the control of the control unit 112.

[0019] The positioning unit 120 is compatible with the Global Navigation Satellite System (GNSS), receives signals from GNSS satellites, and determines the position of the wireless mobile station 100 based on the received signals. Information on the determined position (hereinafter referred to as "position information") is indicated by, for example, latitude, longitude, altitude, etc. The positioning unit 120 outputs the position information to the control unit 112. The LED 122 emits light under the control of the control unit 112.

[0020] This configuration can be realized in hardware terms by the CPU, memory, and other LSIs of any computer, and in software terms by programs loaded into memory, but here we depict functional blocks realized by the cooperation of these. Therefore, it will be understood by those skilled in the art that these functional blocks can be realized in various forms by hardware alone, software alone, or a combination of both.

[0021] 3 shows the configuration of the management device 200. The management device 200 includes a communication unit 210, a control unit 212, an operation unit 214, a microphone 216, a speaker 218, and a storage unit 220. The control unit 212 includes a monitoring unit 250, a first instruction unit 252, an analysis unit 254, and a second instruction unit 256.

[0022] The communication unit 210 performs wired communication. Therefore, the communication unit 210 can communicate with the wireless mobile station 100, the peripheral organization server 300, and the service server 400 via the network 10. The control unit 212 controls the operation of the management device 200. The control unit 212 will be described in detail later.

[0023] The operation unit 214 is composed of buttons, a touch panel, a keyboard, etc., and receives input from the administrator. The operation unit 214 outputs the received input to the control unit 212. The microphone 216 acquires the voice of the administrator. The microphone 216 converts the voice into an electrical signal, and outputs the voice of the electrical signal (hereinafter also referred to as "audio") to the control unit 212. The speaker 218 outputs the voice reproduced in the control unit 212. The memory unit 220 stores data used in the control unit 212.

[0024] This configuration can be realized in hardware terms by the CPU, memory, and other LSIs of any computer, and in software terms by programs loaded into memory, but here we depict functional blocks realized by the cooperation of these. Therefore, it will be understood by those skilled in the art that these functional blocks can be realized in various forms by hardware alone, software alone, or a combination of both.

[0025] 4 is a sequence diagram showing a communication procedure by the communication system 1000. This shows a procedure in which the management device 200 changes the operation of the wireless mobile station 100 in accordance with the state of the wireless mobile station 100 or the user of the wireless mobile station 100 after it is estimated that an abnormality has occurred in the wireless mobile station 100 or the user of the wireless mobile station 100. In the following, "abnormality in the wireless mobile station 100 or the user of the wireless mobile station 100" will be referred to as "abnormality in the wireless mobile station 100", and "state of the wireless mobile station 100 or the user of the wireless mobile station 100" will be referred to as "state of the wireless mobile station 100".

[0026] The wireless mobile station 100 periodically transmits location information of the wireless mobile station 100 to the management device 200 (S10). The management device 200 monitors the location of the wireless mobile station 100 based on the received location information (S12). If the location information of the wireless mobile station 100 does not change for a certain period of time (S14), the management device 200 infers that an abnormality has occurred in the wireless mobile station 100. The management device 200 transmits a command request (command request signal) to the wireless mobile station 100 to confirm the presence of the wireless mobile station 100 (S16).

[0027] When the wireless mobile station 100 receives the command request, it notifies the user of the reception of the command request. When the user operates the wireless mobile station 100, the wireless mobile station 100 transmits an acknowledgement signal for the command request to the management device 200 (S18). Here, it is assumed that the acknowledgement signal is not transmitted from the wireless mobile station 100 to the management device 200.

[0028] When the management device 200 does not receive a confirmation signal for the command request even after a predetermined time has elapsed, the management device 200 transmits a first instruction signal to the wireless mobile station 100 to instruct the wireless mobile station 100 to transmit a voice signal (S22). When the wireless mobile station 100 receives the first instruction signal, it acquires the voice and transmits a response signal (voice signal) including the voice to the management device 200 (S24). In addition, the management device 200 transmits a command re-request (command re-request signal) to the wireless mobile station 100 to confirm the presence of the wireless mobile station 100 (S26). The command re-request corresponds to a command request transmitted for the second or subsequent time. When the wireless mobile station 100 receives the command re-request, the wireless mobile station 100 notifies the user of the reception of the command re-request. When the user operates the wireless mobile station 100, the wireless mobile station 100 transmits a re-confirmation signal for the command re-request to the management device 200 (S28). If the user does not operate the wireless mobile station 100, the wireless mobile station 100 does not transmit a re-confirmation signal to the management device 200. The command re-request may be sent multiple times.

[0029] Furthermore, the management device 200 transmits an automatic command request to the wireless mobile station 100 in order to confirm the presence of the wireless mobile station 100 (S30). The automatic command request is a command request that does not require a user operation of the wireless mobile station 100. When the wireless mobile station 100 receives the automatic command request, it transmits an automatic confirmation signal in response to the automatic command request to the management device 200 (S32). The automatic command request may be transmitted multiple times.

[0030] The management device 200 estimates the state of the wireless mobile station 100 by performing signal analysis on the response signal, reconfirmation signal, and automatic confirmation signal (S34). The management device 200 determines a change in the operation of the wireless mobile station 100 according to the estimated state of the wireless mobile station 100. The management device 200 transmits a second instruction signal to the wireless mobile station 100 for instructing the wireless mobile station 100 to change the operation (S36). Upon receiving the second instruction signal, the wireless mobile station 100 changes its operation according to the second instruction signal (S38).

[0031] The details of such processing will be described below with reference to Figs. 2, 3 and 5. Fig. 5 is a flowchart showing a communication procedure by the management device 200. The information acquisition function of the wireless mobile station 100 in the management device 200 is turned on (S100). If five minutes have not elapsed (N in S102), the management device 200 waits. If five minutes have elapsed (Y in S102), the communication unit 210 of the management device 200 (Fig. 3) transmits a signal for requesting location information (hereinafter referred to as "location information request signal") to the wireless mobile station 100 (S104).

[0032] The communication unit 110 of the wireless mobile station 100 (FIG. 2) receives the location information request signal. The location information acquisition unit 150 acquires the location information of the wireless mobile station 100 from the positioning unit 120, and causes the communication unit 110 to transmit the location information.

[0033] If the monitoring unit 250 of the management device 200 (FIG. 3) does not acquire location information via the communication unit 210 (N in S106) and has not performed the designated number of acquisition operations (N in S108), the process returns to step S102. If the designated number of acquisition operations has been performed (Y in S108), the process proceeds to step S116 described below. If the monitoring unit 250 acquires location information via the communication unit 210 (Y in S106), the monitoring unit 250 executes analysis based on the location information from the previous time (S110). If the time when the location information was acquired is, for example, within 10 minutes from the time when the previous location information was acquired (Y in S112), the process proceeds to step S114. If the location in the location information has moved from the previous location, or the time when the device has stayed at the same location is, for example, within 30 minutes (Y in S114), the process returns to step S102. These correspond to a state in which the wireless mobile station 100 transmits location information at intervals within a first predetermined time, and monitors whether it is moving within a second predetermined time.

[0034] On the other hand, if the location information is not acquired within 10 minutes from the time when it was last acquired (N of S112), or if the location in the location information indicates that the location has remained at the same location for longer than 30 minutes (N of S114), this corresponds to a state in which an abnormality is suspected in the wireless mobile station 100. Then, the monitoring unit 250 estimates an abnormality in the wireless mobile station 100. When the monitoring unit 250 estimates an abnormality in the wireless mobile station 100, the first instruction unit 252 causes the communication unit 210 to transmit a command request (S116).

[0035] The communication unit 110 of the wireless mobile station 100 (FIG. 2) receives a command request. When the response unit 152 acquires the command request, it notifies the user of the receipt of the command request by outputting a ring tone from the speaker 118 or by turning on the LED 122. In response to this, when the user operates the operation unit 114, the response unit 152 causes the communication unit 110 to transmit a confirmation signal in response to the command request. On the other hand, if the user does not operate the operation unit 114, the response unit 152 does not cause the communication unit 110 to transmit a confirmation signal.

[0036] When the communication unit 210 of the management device 200 (FIG. 3) receives a confirmation signal from the wireless mobile station 100 (Y of S118), the process returns to step S102. This corresponds to the management device 200 receiving a confirmation signal from the wireless mobile station 100 indicating that it is not an emergency. As a result, the first instruction unit 252 does not cause the communication unit 210 to transmit a first instruction signal in response to the command request. On the other hand, when the communication unit 210 does not receive a confirmation signal from the wireless mobile station 100 (N of S118), the first instruction unit 252 causes the communication unit 210 to transmit a first instruction signal (S122). When the communication unit 110 of the wireless mobile station 100 (FIG. 2) receives the first instruction signal, the response unit 152 causes the communication unit 110 to transmit a response signal (audio signal) including the voice acquired from the microphone 116. The communication unit 210 of the management device 200 (FIG. 3) receives the response signal from the wireless mobile station 100 (S122). This corresponds to the management device 200 operating the wireless mobile station 100 to transmit a voice signal because the user of the wireless mobile station 100 may be in an emergency.

[0037] Further, the first instruction unit 252 causes the communication unit 210 to transmit a command re-request (S124). The communication unit 110 of the wireless mobile station 100 (FIG. 2) receives the command re-request. When the response unit 152 acquires the command re-request, it notifies the user of the receipt of the command re-request by outputting a ring tone from the speaker 118 or by turning on the LED 122. In response to this, when the user operates the operation unit 114, the response unit 152 causes the communication unit 110 to transmit a reconfirmation signal for the command re-request. On the other hand, if the user does not operate the operation unit 114, the response unit 152 does not cause the communication unit 110 to transmit the reconfirmation signal. The communication unit 210 of the management device 200 (FIG. 3) receives the reconfirmation signal from the wireless mobile station 100 (S124). If the reconfirmation signal is not transmitted, the communication unit 210 does not receive the reconfirmation signal from the wireless mobile station 100. Then, the control unit 212 stores whether or not a reconfirmation signal has been received in the storage unit 220. As described above, the command re-request may be transmitted multiple times.

[0038] Furthermore, the first instruction unit 252 causes the communication unit 210 to transmit an automatic command request (S126). The communication unit 110 of the wireless mobile station 100 (FIG. 2) receives the automatic command request. When the response unit 152 receives the automatic command request, it causes the communication unit 110 to automatically transmit an automatic confirmation signal in response to the automatic command request. As described above, the automatic command request may be transmitted multiple times. The communication unit 210 of the management device 200 (FIG. 3) receives the automatic confirmation signal from the wireless mobile station 100 (S126). If the automatic confirmation signal is not transmitted, the communication unit 210 does not receive the automatic confirmation signal from the wireless mobile station 100. Then, the control unit 212 stores in the memory unit 220 whether or not the automatic confirmation signal has been received.

[0039] The analysis unit 254 analyzes the response signal to the first instruction signal, the reconfirmation signal to the command re-request, and the automatic confirmation signal to the automatic command request (S128). First, the analysis unit 254 separates and acquires the human speech sound (audio portion) and the ambient sound (noise portion) from the response signal (audio signal). A known technique may be used to separate the audio signal into the speech signal and the ambient sound signal. The analysis unit 254 calculates the response signal, that is, the level of the audio signal (hereinafter referred to as the "received volume level"). The analysis unit 254 also frequency-converts the audio signal to calculate a spectrum signal, and then acquires a cepstrum from the spectrum signal. The analysis unit 254 obtains the peak (pitch) of the cepstrum, calculates the average value of the cepstrum, and uses the peak of the cepstrum and the average value of the cepstrum to determine the audio portion. The analysis unit 254 calculates the level of the audio portion (hereinafter referred to as the "call volume level"). Furthermore, the analysis unit 254 obtains a noise portion by removing the voice portion from the audio signal, and calculates the level of the noise portion (hereinafter, referred to as the "ambient sound volume level").

[0040] FIG. 6 shows the data structure of the table held in the analysis unit 254. "No." indicates the number of the state to be classified, and "Condition" indicates the condition for falling under the state. The analysis unit 254 determines that the state is "1" when the received volume level does not exceed the reference level for a certain period or a certain number of times. The reference level, the certain period, and the certain number of times are determined in advance. This is because the microphone 116 of the wireless mobile station 100 is in a state where it is difficult to obtain a voice signal, and it is presumed that the microphone 116 is in the user's pocket or bag, for example. The analysis unit 254 determines that the state is "2" when the analysis unit 254 has transmitted a command re-request multiple times but has not received a reconfirmation signal even after a certain period of time has passed. This is because the user of the wireless mobile station 100 is in a state where he or she cannot operate the wireless mobile station 100, and it is presumed that the user is not feeling well, for example.

[0041] The analysis unit 254 determines that the state is "3" when the call volume level exceeds the first threshold for a certain period of time or a certain number of times. At that time, the surrounding volume level is not used for the determination. The first threshold is determined in advance. This is a state in which the user of the wireless mobile station 100 is uttering a loud voice, and it is presumed that, for example, the user is informing of a danger. The determination of the state "3" is not limited to the call volume level, and the meaning of the utterance may be extracted from the utterance by a known voice recognition technology to determine whether or not the content is informing of a danger. The analysis unit 254 determines that the state is "4" when the surrounding volume level exceeds the second threshold for a certain period of time or a certain number of times. At that time, the call volume level is not used for the determination. The second threshold is determined in advance. This is a state in which an event that produces a loud sound is occurring around the user of the wireless mobile station 100, and it is presumed that, for example, an accident, a disaster, a shooting, or the like is occurring. The determination of state "4" is not limited to the ambient sound level, and may be made by detecting sounds such as gunfire through pattern matching with the spectrum signal of the ambient sound to determine whether an incident has occurred. If the analysis unit 254 has transmitted an automatic command request multiple times but has not received an automatic confirmation signal even after a certain period of time has passed, it determines that the state is "5". This indicates that the wireless mobile station 100 is not operating normally, and it is presumed that the device is broken, for example. If multiple conditions are met, the analysis unit 254 determines that multiple states are in place.

[0042] FIG. 7 shows the data structure of another table held in the analysis unit 254. "No." in FIG. 7 shows a number corresponding to the number of the state classified in FIG. 6. "Turn up the volume" and the like show the change in the operation of the wireless mobile station 100, and a "○" mark shows the corresponding change. For example, in the case of state "1", "Turn up the volume" of the speaker 118, "Turn up the sensitivity" of the microphone 116, and "Group member notification" are selected. The group members indicate each of the wireless mobile stations 100 included in a group registered in advance. In the case of state "2", "Turn up the volume" of the speaker 118, "Group member notification", "Nearby institution notification", and outputting a sound indicating an "alert" from the speaker 118 are selected. "Nearby institution notification" indicates that the management device 200 notifies the nearby institution server 300.

[0043] In the case of state "3", "increase sensitivity", "speaker off", "LED off", "group member notification", and "nearby institution notification" of the microphone 116 are selected. "Speaker off" indicates that the output of the speaker 118 is turned off, and "LED off" indicates that the LED 122 is not illuminated. In the case of state "4", "increase volume" of the speaker 118, "increase sensitivity", "group member notification", and "nearby institution notification" of the microphone 116 are selected. In the case of state "5", "group member notification", "nearby institution notification", and "service notification" are selected. "Service notification" indicates that the management device 200 will notify the service server 400. Return to FIG. 5.

[0044] The analysis unit 254 refers to the table in Fig. 6 based on the received volume level, call volume level, ambient volume level, reconfirmation signal, and automatic confirmation signal to determine the state, and refers to the table in Fig. 7 based on the determined state to determine the changes to be made to the operation of the wireless mobile station 100. When the analysis unit 254 determines in Fig. 6 that multiple conditions apply, it adopts the changes in Fig. 7 for each state.

[0045] The second instruction unit 256 generates a second instruction signal for instructing the wireless mobile station 100 to change the operation based on the change content determined by the analysis unit 254, and transmits the second instruction signal from the communication unit 210 to the wireless mobile station 100 (S130). In the case of state "1", the second instruction unit 256 generates a second instruction signal indicating "increase volume" or "increase sensitivity". Furthermore, the second instruction unit 256 manages in advance the identification information of the wireless mobile stations 100 included in the group, and transmits a notification to each of the wireless mobile stations 100 to the communication unit 210. In the case of state "2", the second instruction unit 256 generates a second instruction signal indicating "alert". Furthermore, the second instruction unit 256 transmits a notification to the surrounding organization server 300 to the communication unit 210. The surrounding organization server 300 is, for example, a server managed by an organization such as the police, fire department, or ambulance, and requests that the wireless mobile station 100 go to the location in the location information and confirm it.

[0046] In the case of the state "3", the second instruction unit 256 generates a second instruction signal indicating "increase the sensitivity", "speaker off", and "LED off". In addition, the second instruction unit 256 causes the communication unit 210 to transmit a notification to each of the multiple wireless mobile stations 100 and a notification to the surrounding organization server 300. In the case of the state "4", the second instruction unit 256 generates a second instruction signal indicating "increase the volume" and "increase the sensitivity". In addition, the second instruction unit 256 causes the communication unit 210 to transmit a notification to each of the multiple wireless mobile stations 100 and a notification to the surrounding organization server 300. In the case of the state "5", the second instruction unit 256 causes the communication unit 210 to transmit a notification to each of the multiple wireless mobile stations 100, a notification to the surrounding organization server 300, and a notification to the service server 400. The service server 400 is, for example, a server managed by a repair service department of the wireless mobile station 100, and requests that the wireless mobile station 100 be repaired at a location in the location information of the wireless mobile station 100.

[0047] The communication unit 110 of the wireless mobile station 100 (FIG. 3) receives the second instruction signal. The change unit 154 changes the operation in response to the second instruction signal received by the communication unit 110.

[0048] According to this embodiment, when an abnormality in the wireless mobile station is estimated, a response signal to the first instruction signal is analyzed to instruct a change in the operation of the wireless mobile station, so that when a user who owns the wireless mobile station is in an emergency, the operation of the wireless mobile station can be controlled from the management device. Also, when an abnormality in the wireless mobile station is estimated, a command request is transmitted, and whether or not to transmit the first instruction signal is determined depending on whether or not a confirmation signal for the command request is received, so that the frequency of transmission of the first instruction signal can be reduced. Also, since the frequency of transmission of the first instruction signal is reduced, an increase in the amount of processing can be suppressed. Also, when transmitting the first instruction signal, a command re-request and an automatic command request are also transmitted, and the response signal to the first instruction signal, the re-confirmation signal to the command re-request, and the automatic confirmation signal to the automatic command request are analyzed, so that the accuracy of the analysis can be improved.

[0049] The present invention has been described above based on the embodiments. In the embodiments, an audio signal has been described, but the present invention is not limited to this and may be an information signal such as a data signal. It will be understood by those skilled in the art that the embodiments are merely illustrative and that various modifications are possible in the combination of each of the components and each of the processing processes, and that such modifications are also within the scope of the present invention.

[0050] This disclosure includes matters that contribute to the realization of "Sustainable urban development" as one of the SDGs (Sustainable Development Goals) and contribute to the safety and security of public facilities. [Explanation of symbols]

[0051] 10 network, 100 wireless mobile station, 110 communication unit, 112 control unit, 114 operation unit, 116 microphone, 118 speaker, 120 positioning unit, 122 LED, 150 location information acquisition unit, 152 response unit, 154 change unit, 200 management device, 210 communication unit, 212 control unit, 214 operation unit, 216 microphone, 218 speaker, 220 memory unit, 250 monitoring unit, 252 first instruction unit, 254 analysis unit, 256 second instruction unit, 300 surrounding institution server, 400 service server, 1000 communication system.

Claims

1. A communication unit for communicating with a wireless mobile station; a monitoring unit that estimates an abnormality in the wireless mobile station based on a history of location information received from the wireless mobile station by the communication unit; a first instruction unit that causes the communication unit to transmit a first instruction signal instructing the wireless mobile station to transmit a voice signal when the monitoring unit estimates an abnormality in the wireless mobile station; an analysis unit that analyzes a response signal including a voice signal in response to a first instruction signal when the communication unit receives the response signal from the wireless mobile station; a second instruction unit that causes the communication unit to transmit a second instruction signal for instructing a change in operation of the wireless mobile station when the analysis unit analyzes that a predetermined condition is satisfied; A management device comprising:

2. The management device according to claim 1 , wherein the analysis unit analyzes the predetermined condition as to whether the volume level of the speech sound separated from the audio signal exceeds a first threshold value or whether the volume level of the ambient sound separated from the audio signal exceeds a second threshold value.

3. the first instruction unit causes the communication unit to transmit a command request signal before transmitting the first instruction signal when the monitoring unit estimates an abnormality in the wireless mobile station; 2 . The management device according to claim 1 , wherein the first instruction unit causes the communication unit to transmit a first instruction signal when the communication unit does not receive a confirmation signal from the wireless mobile station in response to the command request signal.

4. the first instruction unit causes the communication unit to transmit the first instruction signal, and then causes the communication unit to transmit a command re-request signal; 4. The management device according to claim 3, wherein the analysis unit analyzes the response signal to the first instruction signal and the reconfirmation signal to the command re-request signal when the communication unit receives the response signal and the reconfirmation signal from the wireless mobile station.

5. A wireless mobile station, A communication unit that communicates with a management device; a location information acquisition unit that acquires location information of the wireless mobile station and transmits the location information to the communication unit; a response unit that, when the communication unit receives a first instruction signal from the management device to instruct the wireless mobile station to transmit a voice signal by the management device estimating an abnormality in the wireless mobile station based on the history of the location information, causes the communication unit to transmit a response signal to the first instruction signal; a change unit that changes an operation of the wireless mobile station in response to a second instruction signal when the communication unit receives a second instruction signal from the management device based on a result of the management device analyzing the response signal, the second instruction signal being used to instruct a change in operation of the wireless mobile station; A wireless mobile station comprising:

Images