JP7407563B2 - Information terminal, communication system, and terminal control method - Google Patents

Description

The present invention relates to an information terminal, a communication system, and a terminal control method.

The wireless telemeter system described in Patent Document 1 includes a base unit. The parent device includes a nonvolatile memory, a memory mounting section, and a wireless communication unit. A nonvolatile memory can be attached to and detached from the memory attachment section. The non-volatile memory stores kinship information. Matching information is unique information used to recognize a communication partner in wireless communication.

Japanese Patent Application Publication No. 2007-200124

However, if the nonvolatile memory is not installed in the memory installation section, the parent device cannot acquire the matching information from the nonvolatile memory. If the base device communicates in this state, it will not be able to recognize the other party and will end up operating the wireless communication unit needlessly. As a result, the power consumption of the base unit may increase.

An object of the present invention is to provide an information terminal, a communication system, and a terminal control method that can suppress an increase in power consumption of the information terminal.

According to the first aspect of the present invention, the information terminal is one of a plurality of terminals provided in a communication system. The information terminal includes a communication section, an acquisition section, a determination section, and a determination section. The communication unit communicates with another terminal other than the information terminal among the plurality of terminals. The acquisition unit performs acquisition processing to acquire kinship information that is information regarding a terminal that has been established to communicate with the communication unit among the other terminals. The determination unit performs a determination process to determine whether the acquisition unit was able to acquire the matchmaking information. The determining unit performs a determining process to determine whether or not to stop the communication unit based on the result of the determining process.

According to a second aspect of the invention, a communication system includes a plurality of terminals. The plurality of terminals include the information terminal.

According to the third aspect of the present invention, a terminal control method controls a plurality of terminals provided in a communication system. In the terminal control method, one of the plurality of terminals, an information terminal, is a terminal other than the information terminal among the plurality of terminals, using a communication unit included in the information terminal. including the step of communicating with the terminal. The terminal control method includes a step in which the information terminal performs an acquisition process to acquire companionship information that is information regarding a terminal among the other terminals that has been established to communicate with the communication unit. The terminal control method includes a step of performing a determination process for determining whether the information terminal has been able to acquire the matchmaking information. The terminal control method includes a step in which the information terminal performs a determination process to determine whether or not to stop the communication unit based on a result of the determination process.

According to the present invention, it is possible to suppress an increase in power consumption of an information terminal.

1 is a block diagram showing the configuration of a telemeter system according to an embodiment of the present invention. FIG. 2 is a block diagram showing the configuration of a server. FIG. 2 is a block diagram showing the configuration of a center side network control device. FIG. 2 is a block diagram showing the configuration of a parent device. FIG. 3 is a diagram showing the appearance of a parent device. FIG. 2 is a block diagram showing the configuration of a slave device. FIG. 3 is a flow diagram showing the first operation of the parent device. It is a flowchart which shows the 2nd operation|movement of a main device.

Embodiments of the present invention will be described with reference to the drawings. In addition, in the drawings, the same reference numerals are given to the same or corresponding parts, and the description will not be repeated.

With reference to FIG. 1, a telemeter system 100 according to an embodiment of the present invention will be described. FIG. 1 is a block diagram showing the configuration of a telemeter system 100 according to an embodiment of the present invention.

The telemeter system 100 is a system in which a server 10, a base unit 30, and a slave unit 40 communicate with each other via a center side network control device 20. Telemeter system 100 is an example of a communication system of the present invention. A communication system is a system that collects information through communication between multiple terminals.

As shown in FIG. 1, the telemeter system 100 includes a server 10, a center side network control device 20, a base device 30, a plurality of slave devices 40, and a plurality of measurement devices 50.

The base device 30 is communicably connected to the server 10 via the center-side network control device 20 . Each of the plurality of slave units 40 is communicably connected to the server 10 via the base unit 30 and the center-side network control device 20. The plurality of slave devices 40 are each communicatively connected to the plurality of measuring devices 50.

The server 10 collects measurement values measured by each of the plurality of measuring devices 50 via the parent device 30 and the plurality of slave devices 40.

The center-side network control device 20 mediates communication processing for the server 10 to communicate with the base device 30. The center side network control device 20 and the base unit 30 are connected to a wide area wireless network N1 such as a PHS network, a FOMA network, and an LTE network. The center side network control device 20 and the base unit 30 perform wireless communication with each other via the wide area wireless network N1. Note that the server 10, center-side network control device 20, and base unit 30 may be connected by wire.

In this embodiment, the center-side network control device 20 and the base unit 30 are connected via a wide area wireless network N1. Note that a plurality of master devices 30 may be connected to the wide area wireless network N1.

The center side network control device 20 is provided, for example, in a public network of a communication carrier. The center side network control device 20 controls communication of terminal side devices such as the base unit 30 via the wide area wireless network N1.

When the center-side network control device 20 receives a message from the server 10, the center-side network control device 20 transmits the message to the terminal device using a communication method compliant with the communication standard of the wide area wireless network N1. Furthermore, when the center side network control device 20 receives a message from a terminal device via the wide area wireless network N1, it transmits the received message to the server 10.

Base device 30 is connected to center-side devices such as center-side network control device 20 and server 10 via wide area wireless network N1. The base unit 30 is connected to each of the plurality of slave units 40 via a short-range wireless network.

The base device 30 is wirelessly connected to each of the plurality of slave devices 40. The base device 30 is capable of wireless communication with each of the plurality of slave devices 40.

Base device 30 is an example of a communication device of the present invention.

When the handset 40 receives a message from the server 10 via the short-range wireless network and the center-side network control device 20, the handset 40 determines whether the received message is addressed to itself. . When the identifier (ID number) of the handset 40 is specified as the destination address of the message received by the handset 40, the handset 40 determines that the received message is addressed to itself. The handset 40 then executes various processes based on the content of the data included in the received message.

The plurality of slave devices 40 are each connected to the plurality of measurement devices 50 by wire or wirelessly. In this embodiment, each of the plurality of child devices 40 is wired connected to the plurality of measurement devices 50 by the electric wire 1 .

The measuring device 50 is installed for each consumer. The measuring device 50 measures, for example, water usage, gas usage, or electricity usage.

The plurality of slave devices 40 correspond to the plurality of measuring devices 50, respectively. Each of the plurality of slave devices 40 is connected to a corresponding measuring device 50 and obtains a measurement value of the corresponding measuring device 50.

Next, the server 10 will be explained with reference to FIG. 2. FIG. 2 is a block diagram showing the configuration of the server 10.

As shown in FIG. 2, the server 10 includes a storage section 11, a control section 12, and a communication section 13.

The storage unit 11 includes a main storage device (for example, a semiconductor memory) such as a ROM (Read Only Memory) and a RAM (Random Access Memory), and further includes an auxiliary storage device (for example, a hard disk drive). The storage unit 11 stores various computer programs executed by the control unit 12.

The control unit 12 includes a processor such as a CPU (Central Processing Unit) and an MPU (Micro Processing Unit). The control unit 12 controls each element of the server 10 by executing a computer program stored in the storage unit 11.

The communication unit 13 is connected to the center-side network control device 20 by wire or wirelessly, and communicates with the center-side network control device 20 .

Next, the center side network control device 20 will be explained with reference to FIG. FIG. 3 is a block diagram showing the configuration of the center side network control device 20. As shown in FIG.

As shown in FIG. 3, the center side network control device 20 includes a storage section 21, a control section 22, and a communication section 23.

The storage unit 21 includes a main storage device, and may further include an auxiliary storage device. The storage unit 21 stores various computer programs executed by the control unit 22.

Control unit 22 includes a processor. The control unit 22 controls each element of the center side network control device 20 by executing a computer program stored in the storage unit 21.

The communication unit 23 is connected to the server 10 and communicates with the server 10. The communication unit 23 is connected to the wide area wireless network N1, and communicates with a device on the terminal side via the wide area wireless network N1. The communication unit 23 is, for example, a communication module such as a LAN board.

Next, the base unit 30 will be explained with reference to FIGS. 4 and 5. FIG. 4 is a block diagram showing the configuration of base device 30. As shown in FIG. FIG. 5 is a diagram showing the appearance of the base device 30.

As shown in FIGS. 4 and 5, the main device 30 includes a storage section 31, a control device 32, an operation section 33, a display section 34, a wide area wireless communication section 35, a short area wireless communication section 36, It has a connection part 38 and a memory unit installation part 39.

The storage unit 31 includes a main storage device, and may further include an auxiliary storage device. The storage unit 31 stores various computer programs executed by the control device 32.

Control device 32 includes a processor. The control device 32 controls each element of the base device 30 by executing a computer program stored in the storage unit 31.

The control device 32 includes an acquisition section 32a, a determination section 32b, a determination section 32c, and a processing section 32d. Specifically, the processor of the control device 32 functions as an acquisition section 32a, a determination section 32b, a determination section 32c, and a processing section 32d by executing a computer program stored in the storage section 31.

The operation unit 33 accepts instructions to the base device 30 from the outside. The operation unit 33 includes, for example, a dip switch 33a and a push switch 33b. DIP switch 33a accepts instructions to base unit 30. The push switch 33b causes the control device 32 to execute the instruction received by the dip switch 33a.

The display unit 34 displays, for example, information to be notified to a worker performing maintenance work. The display unit 34 includes, for example, an LED (Light Emitting Diode) and/or a liquid crystal display panel.

The wide area wireless communication unit 35 performs wireless communication via the wide area wireless network N1 by transmitting and receiving radio waves. The wide area wireless communication unit 35 is, for example, a communication module capable of wide area communication such as FOMA or LTE.

When the wide area wireless communication unit 35 receives a radio wave, it acquires a message by decoding the received radio wave. The wide area wireless communication unit 35 outputs the decoded message to the control device 32. For example, when the control device 32 acquires a message from the wide area wireless communication unit 35, it performs processing according to the acquired message.

The short range wireless communication unit 36 communicates with the handset 40 using a predetermined wireless communication method by transmitting and receiving radio waves via an antenna. As the wireless communication method, for example, a specified low power wireless method is adopted. In addition to the 429 MHz band, the specified low power wireless system uses the 920 MHz band, which has a faster communication speed. The short range wireless communication unit 36 is, for example, a communication module having an RF-LSI for 920 MHz band communication.

The short range wireless communication unit 36 is an example of a communication unit of the present invention.

The short range wireless communication unit 36 includes a plurality of communication units that employ different wireless communication methods. In this embodiment, the short range wireless communication section 36 includes a first communication section 36a and a second communication section 36b. The first communication unit 36a and the second communication unit 36b employ wireless communication systems with different bands. In this embodiment, the first communication unit 36a employs a 429 MHz band wireless communication method. The second communication unit 36b employs a 920 MHz band wireless communication method.

The connection section 38 includes one or more ports. The connecting portion 38 is wired to the measuring device 50 via the electric wire 1 . The connection unit 38 acquires the measured value of the measuring device 50 via the electric wire 1.

A memory unit is installed in the memory unit installation section 39. The memory unit installation section 39 includes a plurality of mounting sections. In this embodiment, the memory unit installation section 39 includes a first mounting section 39a and a second mounting section 39b. Each of the first mounting part 39a and the second mounting part 39b includes a slot. A memory unit is removably installed in the slot. The memory unit includes, for example, a readable/writable storage device such as an EEPROM (registered trademark), a terminal that can be inserted into and removed from a slot, and a board on which the storage device and the terminal are installed.

The first memory unit M1 is removably mounted on the first mounting portion 39a. First matching information is stored in the first memory unit M1. The first matching information is ID information of the handset 40 that has been established to communicate with the first communication unit 36a among the plurality of handsets 40. The handset 40 whose ID information is registered in the first matching information employs a wireless communication system using the same band (429 MHz band) as the first communication unit 36a.

The second memory unit M2 is removably mounted on the second mounting portion 39b. Second matching information is stored in the second memory unit M2. The second matching information is ID information of the handset 40 that has been established to communicate with the second communication unit 36b among the plurality of handsets 40. The handset 40 whose ID information is registered in the second matching information employs a wireless communication system using the same band (920 MHz band) as the second communication unit 36b.

The base device 30 communicates with the plurality of slave devices 40 based on the first matching information and the second matching information. Each of the first matching information and the second matching information is an example of matching information of the present invention.

Setting information is stored in each of the first memory unit M1 and the second memory unit M2. The setting information is, for example, information representing operating conditions such as the time and period for regularly reading the meter of the measuring device 50. By storing the first matching information and setting information in the first memory unit M1, when replacing the base unit 30, the first memory unit M1 installed in the base unit 30 before replacement can be By simply attaching it to the base device 30, the replaced base device 30 can inherit the contents of the first matching information and setting information that were set in the base device 30 before replacement. Similarly, with respect to the second memory unit M2, by simply installing it in the replaced base device 30, the contents of the second matching information and setting information can be inherited to the replaced base device 30. . Thereby, when replacing the base device 30, it is possible to save the effort of resetting the marriage information and setting information. As a result, maintenance and management of the base unit 30 becomes easier.

Furthermore, since the memory units (first memory unit M1 and second memory unit M2) are configured to be removably attached to the mounting parts (first mounting part 39a and second mounting part 39b), the memory units are attached to the mounting parts. The operator can easily check whether it is attached or not. As a result, human errors by workers such as forgetting to install the memory unit can be reduced.

Next, referring to FIG. 6, the slave unit 40 will be described. FIG. 6 is a block diagram showing the configuration of the handset 40. As shown in FIG.

As shown in FIG. 6, the handset 40 includes a storage section 41, a control section 42, an operation section 43, a display section 44, a short range wireless communication section 45, a connection section 46, and a mounting section 49. have

The storage unit 41 includes a main storage device, and may further include an auxiliary storage device. The storage unit 41 stores various computer programs executed by the control unit 42.

Control unit 42 includes a processor. The control unit 42 controls each element of the slave unit 40 by executing a computer program stored in the storage unit 41.

The operation unit 43 receives instructions for the slave unit 40 from the outside. The operation unit 43 includes, for example, a dip switch, a push switch, and a reset switch.

The display unit 44 displays, for example, information to be notified to a worker who performs maintenance work. The display section 44 includes, for example, an LED and a liquid crystal display panel.

The short range wireless communication unit 45 communicates with the base unit 30 using a predetermined wireless communication method by transmitting and receiving radio waves. The short range wireless communication unit 45 of this embodiment employs one of a 429 MHz band wireless communication system and a 920 MHz band wireless communication system.

The connection section 46 includes one or more ports. The connecting portion 46 is wired to the measuring device 50 via the electric wire 1 . The connection unit 46 acquires the measured value of the measuring device 50 via the electric wire 1.

The mounting portion 49 includes a slot into which the memory unit M can be inserted and removed. The memory unit M stores matching information and setting information. The matchmaking information indicates ID information of a terminal among the base device 30 and the plurality of slave devices 40 that has been established to communicate with itself.

Next, the first operation of the base unit 30 will be described with reference to FIGS. 4, 5, and 7. FIG. 7 is a flow diagram showing the first operation of the base unit 30.

The first operation of the base device 30 is performed to determine whether to stop the first communication unit 36a (see FIG. 4).

In this embodiment, the first operation is started from a state in which the first communication unit 36a is operating.

Activating the first communication unit 36a means that the communication function of the first communication unit 36a is enabled and the first communication unit 36a is in a state where it can transmit and receive signals. Stopping the first communication unit 36a indicates that the communication function of the first communication unit 36a is disabled, and the first communication unit 36a is in a state where it cannot transmit or receive signals.

As shown in FIGS. 4, 5, and 7, in step S10, the acquisition unit 32a of the base device 30 performs a first acquisition process. The first acquisition process is a process in which the acquisition section 32a accesses the first memory unit M1 that is being attached to the first attachment section 39a, and acquires the first matching information stored in the first memory unit M1.

In step S20, the determination unit 32b determines whether the acquisition unit 32a was able to acquire the first match information.

If the determining unit 32b determines that the acquiring unit 32a has been able to acquire the first match information (Yes in step S20), the process moves to step S40.

When the determination unit 32b determines that the acquisition unit 32a was unable to acquire the first matchmaking information (No in step S20), the process moves to step S30.

For example, if the first memory unit M1 is not installed in the first mounting section 39a, the acquisition section 32a cannot access the first memory unit M1, so the determination section 32b determines that the acquisition section 32a could not acquire the first matching information. judge.

Furthermore, even when the first memory unit M1 being installed in the first mounting section 39a does not store the first matching information, the determining section 32b determines that the acquiring section 32a was unable to acquire the first matching information. If the first matching information is not stored in the first memory unit M1, the first matching information has been stored in the first memory unit M1 since the first memory unit M1 was attached to the first mounting section 39a. Not only when the first memory unit M1 is not installed, but also when the first memory unit M1 is initially installed in the first mounting section 39a, the first matching information is stored in the first memory unit M1, but the first acquisition process is performed. This also includes a case where the first match information has been erased from the first memory unit M1 at that time.

In step S30, the determining unit 32c determines to stop the first communication unit 36a. Then, the processing unit 32d stops the first communication unit 36a. When the process shown in step S30 ends, the process moves to step S10.

In step S40, the determining unit 32c determines to operate the first communication unit 36a. Then, the processing unit 32d causes the first communication unit 36a to continue operating. When the process shown in step S40 ends, the process moves to step S10.

As described above with reference to FIG. 4, FIG. 5, and FIG. 7, in the first operation shown in FIG. Decide whether to stop it. Then, when the acquisition unit 32a cannot acquire the first matching information, the determination unit 32c determines to stop the first communication unit 36a. As a result, the processing unit 32d stops the first communication unit 36a. As a result, the first communication section 36a is prevented from operating in a state where the first memory unit M1 is not attached to the first attachment section 39a, so it is possible to suppress an increase in the power consumption of the base device 30.

Next, the second operation of the base unit 30 will be described with reference to FIGS. 4, 5, and 8. FIG. 8 is a flow diagram showing the second operation of the base device 30.

The second operation of the base device 30 is performed to determine whether or not to stop the second communication unit 36b (see FIG. 4).

In this embodiment, the second operation shown in FIG. 8 is started from a state in which the second communication unit 36b is in operation.

Activating the second communication unit 36b indicates that the communication function of the second communication unit 36b is enabled and the second communication unit 36b is in a state where it can transmit and receive signals. Stopping the second communication unit 36b indicates that the communication function of the second communication unit 36b is disabled, and the second communication unit 36b is in a state where it cannot transmit or receive signals.

In step S50, the acquisition unit 32a of the base device 30 performs a second acquisition process. The second acquisition process is a process in which the acquisition section 32a accesses the second memory unit M2 that is being attached to the second attachment section 39b, and acquires the second matching information stored in the second memory unit M2.

In step S60, the determination unit 32b determines whether the acquisition unit 32a was able to acquire the second matching information.

If the determining unit 32b determines that the acquiring unit 32a has been able to acquire the second match information (Yes in step S60), the process moves to step S80.

When the determination unit 32b determines that the acquisition unit 32a was unable to acquire the first matchmaking information (No in step S20), the process moves to step S70.

In step S70, the determining unit 32c determines to stop the second communication unit 36b. Then, the processing section 32d stops the second communication section 36b.

When the process shown in step S70 ends, the process moves to step S50.

In step S80, the determining unit 32c determines to operate the second communication unit 36b. Then, the processing unit 32d causes the second communication unit 36b to continue operating.

When the process shown in step S80 ends, the process moves to step S50.

As described above with reference to FIGS. 4, 5, and 8, in the second operation shown in FIG. 8, when the acquisition unit 32a cannot acquire the second matching information, the processing unit 32d The section 36b is stopped. As a result, the second communication section 36b is prevented from operating in a state where the second memory unit M2 is not attached to the second attachment section 39b, so that it is possible to suppress an increase in the power consumption of the base device 30.

The embodiments of the present invention have been described above with reference to the drawings (FIGS. 1 to 8). However, the present invention is not limited to the above-described embodiments, and can be implemented in various forms without departing from the spirit thereof (for example, (1) to (4)). Moreover, various inventions can be formed by appropriately combining the plurality of components disclosed in the above embodiments. For example, some components may be deleted from all the components shown in the embodiments. For ease of understanding, the drawings mainly schematically show each component, and the number of each component shown in the drawings may differ from the actual number due to drawing preparation. Moreover, each component shown in the above embodiment is an example, and is not particularly limited, and various changes can be made without substantially departing from the effects of the present invention.

(1) There is no particular limitation on the timing at which the base unit 30 performs the first operation shown in FIG. 7 . For example, the base device 30 may perform the first operation every time a predetermined period of time has elapsed, or may perform the first operation when the base device 30 is started.

(2) There is no particular limitation on the timing at which the base unit 30 performs the second operation shown in FIG. 8 . For example, the base unit 30 may perform the second operation every time a predetermined period of time passes, the second operation may be performed when the base unit 30 is started, or the second operation may be performed in synchronization with the first operation. You may do so.

(3) Below, the first communication unit 36a and the second communication unit 36b will be collectively referred to as a communication unit, the first matching information and the second matching information will be collectively referred to as matching information, and the first The memory unit M1 and the second memory unit M2 may be collectively referred to as a memory unit, and the first attachment section 39a and the second attachment section 39b may be collectively referred to as an attachment section.

In this embodiment, acquisition processing, determination processing, and determination processing are performed for each communication unit. In the acquisition process, as shown in step S10 in FIG. 7 and step S50 in FIG. 8, the acquisition unit 32a (see FIG. 4) acquires kinship information from the memory unit installed in the attachment unit. The determination process is a process in which the determination unit 32b (see FIG. 4) determines whether the acquisition unit 32a has been able to acquire the marriage information, as shown in step S20 in FIG. 7 and step S60 in FIG. In the determination process, as shown in steps S30 and S40 in FIG. 7 and steps S70 and S80 in FIG. (See FIG. 4) is the process determined. However, the present invention is not limited thereto.

The configuration may be such that the acquisition process, determination process, and decision process are performed only on a predetermined communication unit among the plurality of communication units (the first communication unit 36a and the second communication unit 36b). For example, if the handset 40 to be used in the future is scheduled to shift from a handset 40 that uses a 429 MHz band wireless communication method to a handset 40 that uses a 920 MHz band wireless communication method. The acquisition process, determination process, and decision process are performed only on the communication unit (first communication unit 36a) that uses the 429 MHz band wireless communication method, and the acquisition process, determination process, and determination process are performed only on the communication unit (first communication unit 36a) that uses the 920 MHz band wireless communication method. The configuration is such that the acquisition process, determination process, and decision process are not performed on the second communication unit 36b). In this case, the control device 32 of the base device 30 performs the first operation shown in FIG. 7, but does not perform the second operation shown in FIG. 8. As a result, the load on the control device 32 can be reduced.

(4) In the present embodiment, the base device 30 performs a process of determining whether to operate the first communication unit 36a (see steps S10 to S40 in FIG. 7) and a process of determining whether to operate the second communication unit 36b. A process of determining whether or not is performed is performed (see steps S50 to S80 in FIG. 7). However, the present invention is not limited thereto.

As shown in FIG. 6, the handset 40 may perform a process of determining whether or not to operate the short range wireless communication unit 45. In this case, the control unit 42 of the handset 40 corresponds to the acquisition unit, determination unit, and determination unit of the present invention. Specifically, the control unit 42 determines whether or not the matching information has been acquired from the memory unit M installed in the mounting unit 49. When the control unit 42 determines that the matchmaking information has been acquired, the control unit 42 determines to operate the short range wireless communication unit 45, and operates the short range wireless communication unit 45. On the other hand, if the control unit 42 determines that the matchmaking information could not be acquired, it decides to stop the short range wireless communication unit 45 and stops the short range wireless communication unit 45. As a result, it is possible to suppress an increase in power consumption of the slave unit 40.

INDUSTRIAL APPLICABILITY The present invention can be used in the fields of information terminals, communication systems, and terminal control methods.

40 Handset 30 Base unit 32a Acquisition unit 32b Determination unit 32c Determination unit 36a First communication unit 36b Second communication unit 100 Telemeter system

Claims (9)

An information terminal that is one of a plurality of terminals provided in a communication system,
a communication unit for communicating with another terminal other than the information terminal among the plurality of terminals;
an acquisition unit that performs an acquisition process to acquire marriage information that is information regarding a terminal that has been established to communicate with the communication unit among the other terminals;
a determination unit that performs a determination process to determine whether the acquisition unit has been able to acquire the family information;
a determining unit that performs a determining process to determine whether or not to stop the communication unit based on the result of the determining process ;
a mounting section into which a memory unit is removably mounted;
Equipped with
the memory unit stores the family information;
The information terminal is configured such that the acquisition unit acquires the matching information from the memory unit installed in the installation unit. When the determination unit determines that the acquisition unit was able to acquire the family information, the determination unit determines not to stop the communication unit,
The information terminal according to claim 1, wherein when the determination unit determines that the acquisition unit has not been able to acquire the marriage information, the determination unit determines to stop the communication unit. The information terminal according to claim 1 or 2 , wherein when the memory unit is not attached to the attachment section, the determination section decides to stop the communication section. According to any one of claims 1 to 3 , wherein the determination unit determines to stop the communication unit when the matching information is not stored in the memory unit installed in the installation unit. information terminal. A plurality of communication units are provided,
A plurality of the mounting parts are provided,
Each of the plurality of communication units corresponds to the plurality of mounting units,
The information terminal according to any one of claims 1 to 4 , wherein the memory unit storing the matching information of the corresponding communication unit is attached to and detached from each of the plurality of attachment units. The information terminal according to claim 5 , wherein the acquisition process, the determination process, and the determination process are performed for each communication unit. The information terminal according to claim 5 , wherein the acquisition process, the determination process, and the determination process are performed on a predetermined communication unit among the plurality of communication units. A communication system comprising multiple terminals,
A communication system, wherein the plurality of terminals include the information terminal according to any one of claims 1 to 7 . A terminal control method for controlling a plurality of terminals provided in a communication system, the method comprising:
A step in which one of the plurality of terminals, an information terminal, uses a communication unit included in the information terminal to communicate with another terminal of the plurality of terminals other than the information terminal. and,
performing an acquisition process in which the information terminal acquires match information that is information regarding a terminal among the other terminals that has been established to communicate with the communication unit;
a step in which the information terminal performs a determination process to determine whether or not the adoption information has been acquired;
The information terminal performs a determination process to determine whether or not to stop the communication unit based on the result of the determination process ,
The information terminal includes a mounting section into which a memory unit is removably mounted,
the memory unit stores the family information;
In the acquisition process, the terminal control method acquires the matching information from the memory unit installed in the attachment section .

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