WO2018190223A1

WO2018190223A1 - Wireless communication system, master device, master device control method, and program

Info

Publication number: WO2018190223A1
Application number: PCT/JP2018/014430
Authority: WO
Inventors: 雅明野田
Original assignee: パナソニックＩｐマネジメント株式会社
Priority date: 2017-04-10
Filing date: 2018-04-04
Publication date: 2018-10-18
Also published as: JPWO2018190223A1

Abstract

The present disclosure addresses the problem of difficulty encountered when a user tries to know a registration status of a slave device in a master device. A wireless communication system (100) is provided with a master device (1) and a slave device (2). A slave device-side control unit (21) has a request function for transmitting, to the master device (1), a request signal including an identifier of the slave device (2) and request data requested to be registered in the master device (1). A master device-side control unit (11) has a reply function for transmitting, to the slave device (2) upon reception of the request signal, a reply signal including an encryption key associated with the slave device (2). The slave device-side control unit (21) has a confirmation function for transmitting, to the master device (1), a confirmation signal including encrypted data obtained by encrypting data held by the slave device (2) using the encryption key included in the reply signal. The master device-side control unit (11) has an output function for attempting to decode the encrypted data upon reception of the confirmation signal, and for, if the attempt is unsuccessful, outputting unregistered information.

Description

Wireless communication system, parent device, parent device control method, and program

The present disclosure generally relates to a wireless communication system, a parent device, a parent device control method, and a program, and more specifically, a wireless communication system in which a child device is registered in the parent device, a parent device, a parent device control method, and Regarding the program.

Patent Document 1 discloses a door lock confirmation system that monitors the locked / unlocked state of a building entrance / exit. The door lock confirmation system described in Patent Document 1 includes a master unit that is installed in an occupied space of a building and capable of communicating with a portable terminal, and a lock / unlock that is provided on a window and detects a lock / unlock state. And a sensor. The lock / unlock sensor notifies the master device by transmitting a predetermined radio signal when the lock / unlock state of the window changes.

In the door lock confirmation system (wireless communication system) described in Patent Document 1, it is necessary to register the slave unit to the master unit so that the unlocking sensor (slave unit) notifies the master unit of the locked / unlocked state of the window. There is. In such a wireless communication system, it is desired that a user (for example, a contractor) grasps the registration status of the slave unit in the master unit.

JP 2012-8878 A

The present disclosure has been made in view of the above points, and an object thereof is to provide a wireless communication system, a parent device, a parent device control method, and a program in which a user can easily grasp the registration status of a child device in the parent device. To do.

A wireless communication system according to one aspect of the present disclosure includes a parent device and a child device that can wirelessly communicate with the parent device. The master unit has a master unit side control unit. The said subunit | mobile_unit has a subunit | mobile_unit side control part. The slave unit side control unit has a request function for transmitting a request signal including an identifier of the slave unit and request data for requesting registration to the master unit to the master unit. When receiving the request signal, the parent device side control unit has a reply function of transmitting a reply signal including an encryption key associated with the child device to the child device. The slave unit side control unit transmits to the master unit a confirmation signal including encrypted data obtained by encrypting data of the slave unit with the encryption key included in the reply signal and an identifier of the slave unit. It has a confirmation function to send. When the master unit side control unit receives the confirmation signal, it tries to decrypt the encrypted data included in the confirmation signal, and if it cannot be decrypted, it indicates that the registration of the slave unit is not completed. It has an output function for outputting information.

The parent device according to one aspect of the present disclosure includes a parent device side control unit. The base unit side control unit has a reply function and an output function. When the reply function receives a request signal including an identifier of the slave unit and request data for requesting registration to the master unit from a slave unit capable of wireless communication, the reply function is associated with the slave unit. This is a function for transmitting a reply signal including an encryption key to the slave unit. When the output function receives a confirmation signal from the slave unit, the output function tries to decrypt the encrypted data included in the confirmation signal. If the output function cannot be decrypted, it indicates that the registration of the slave unit is not completed. This function outputs information. The confirmation signal includes encrypted data obtained by encrypting data included in the slave unit with the encryption key included in the reply signal, and an identifier of the slave unit.

The parent device control method according to an aspect of the present disclosure includes a reply step and an output step. When the reply step receives a request signal including an identifier of the slave unit and request data for requesting registration to the master unit from a slave unit capable of wireless communication, the reply step is associated with the slave unit. It is a step of transmitting a reply signal including an encryption key to the slave unit. When the confirmation signal is received from the slave unit, the output step tries to decrypt the encrypted data included in the confirmation signal. If the decryption cannot be performed, the registration is not completed. This is a step of outputting information. The confirmation signal includes encrypted data obtained by encrypting data included in the slave unit with the encryption key included in the reply signal, and an identifier of the slave unit.

The program according to an aspect of the present disclosure causes a parent machine that is a computer system to execute a reply process and an output process. When the reply process receives a request signal including an identifier of a slave unit that can communicate wirelessly with the master unit and request data for requesting registration to the master unit, an encryption associated with the slave unit is received. This is processing for transmitting a reply signal including a key to the slave unit. When receiving the confirmation signal, the output process tries to decrypt the encrypted data included in the confirmation signal, and if the decryption cannot be performed, outputs unregistered information indicating that registration of the slave unit is not completed. It is processing. The confirmation signal includes encrypted data obtained by encrypting data included in the slave unit with the encryption key included in the reply signal, and an identifier of the slave unit.

FIG. 1 is a block diagram of a wireless communication system according to an embodiment of the present disclosure. FIG. 2 is a schematic diagram of the above wireless communication system. FIG. 3 is a sequence diagram of the operation during registration work in the above wireless communication system. FIG. 4 is a flowchart of the operation of the base unit at the time of re-registration work in the above wireless communication system.

(1) Overview Hereinafter, an overview of the wireless communication system 100 according to the embodiment will be described with reference to FIGS. 1 and 2. A wireless communication system 100 according to the present embodiment is used as a system for monitoring the state of a building such as a detached house, and includes a parent device 1 and a child device 2 that can communicate with the parent device 1 wirelessly. . The base unit 1 has a base unit side control unit 11. The subunit | mobile_unit 2 has the subunit | mobile_unit side control part 21. FIG. In this embodiment, the subunit | mobile_unit 2 is installed in the window frame 31 of the window 3, and is comprised so that the opening / closing of the window 3 may be detected. The base unit 1 is installed at a position away from the handset 2 and receives a detection signal including detection data from the handset 2 to monitor the open / close state of the window 3. Therefore, by using the wireless communication system 100 of the present embodiment, it is possible to grasp whether the window 3 has been forgotten to be closed or whether a third party has entered through the window 3.

In the example shown in FIG. 2, the parent device 1 is installed at a position relatively close to the child device 2, but may be installed at a position further away from the child device 2. For example, the base unit 1 may be installed at a front door, and the handset 2 may be installed in a room away from the front door.

Here, the master unit 1 and the slave unit 2 communicate in a paired state so that the slave unit 2 does not communicate with an unrelated master unit. Hereinafter, the pairing is referred to as “registration”. When registration of the child device 2 is completed in the parent device 1, communication is possible between the parent device 1 and the registered child device 2. That is, when receiving the signal from the registered child device 2, the parent device 1 executes processing according to the received signal. On the other hand, when the base unit 1 receives a signal from the unregistered handset 2, the base unit 1 discards the signal without executing the process according to the received signal.

In the wireless communication system 100 of this embodiment, the slave unit 2 is connected to the master unit 1 using the request function and confirmation function of the slave unit side control unit 21 and the reply function and output function of the master unit side control unit 11. sign up. The request function is a function in which the slave unit 2 transmits a request signal to the master unit 1. The request signal includes an identifier of the child device 2 and request data for requesting registration in the parent device 1. This function is exhibited when the handset 2 operates in a registration mode (described later).

The reply function is a function in which the base unit 1 transmits a reply signal including an encryption key linked to the handset 2 to the handset 2. This function is exhibited when the base unit 1 receives a request signal. The confirmation function is a function in which the handset 2 transmits a confirmation signal to the base unit 1. The confirmation signal includes encrypted data obtained by encrypting the data held by the child device 2 with the encryption key included in the reply signal, and the identifier of the child device 2. This function is exhibited when the handset 2 operates in the normal mode (described later).

The output function is a function for outputting unregistered information indicating that registration of the slave unit 2 is not completed when the master unit 1 attempts to decrypt the encrypted data included in the confirmation signal and decryption is impossible. In other words, the master unit 1 completes registration of the slave unit 2 when the encrypted data can be decrypted. This function is exhibited when the parent device 1 receives the confirmation signal.

That is, in the wireless communication system 100 according to the present embodiment, if the registration of the slave unit 2 is not completed in the master unit 1, the master unit 1 outputs unregistered information, so that the user A1 (B1) It is possible to grasp that registration of No. 2 has failed. In other words, the wireless communication system 100 of this embodiment has an advantage that the user A1 (B1) can easily grasp the registration status of the slave unit 2 in the master unit 1.

(2) Details Hereinafter, the wireless communication system 100 of the present embodiment will be described in detail with reference to FIGS. 1 and 2. The wireless communication system 100 according to the present embodiment includes a parent device 1 and one or more (here, one) child device 2.

The master unit 1 is installed in a building such as a front door and a room. In the example shown in FIG. 2, the base unit 1 is installed in a room. The base unit 1 is connected to an external power source such as a commercial power source through an outlet installed in a room, for example, and is configured to be driven by receiving power supply from the external power source. The base unit 1 includes a base unit side control unit 11 and a base unit side communication unit 12.

The parent device side control unit 11 is configured by a computer system having a CPU (Central Processing Unit) and a memory as main components, for example. Then, the computer system functions as the parent device side control unit 11 by the CPU executing the program stored in the memory. Here, the program is recorded in advance in the memory of the base-side controller 11, but may be provided through a telecommunication line such as the Internet or in a non-temporary recording medium such as a memory card. Similarly to the parent device side control unit 11, the child device side control unit 21 of the child device 2 to be described later is also configured by a computer system mainly including a CPU and a memory.

The registration information of the registered child device 2 is stored in the memory of the parent device side control unit 11. The registration information is, for example, an identifier of the child device 2 and an encryption key used for communication with the child device 2. The memory of the parent device side control unit 11 stores the detection data received from the registered child device 2.

The parent device side control unit 11 is configured to operate in at least two modes, a normal mode and a registration mode. The base unit side control unit 11 is configured to switch between the operation in the normal mode and the operation in the registration mode, for example, when the user A1 (B1) operates a switch provided in the base unit 1. Yes. Moreover, the main | base station side control part 11 is comprised so that operation in a normal mode and operation | movement in a registration mode may be switched by operating the portable terminal (for example, smart phone) which user A1 (B1) owns, for example. May be.

In the normal mode, the parent device side control unit 11 waits for a detection signal from the child device 2. When receiving the detection signal from the child device 2 via the parent device side communication unit 12, the parent device side control unit 11 uses the encryption key corresponding to the identifier of the child device 2 included in the received detection signal. The encrypted data included in the received detection signal is decrypted. Then, base unit side control unit 11 stores the detection data obtained by the decryption in association with the identifier of handset 2 in the memory. In this way, the parent device 1 monitors the state of the child device 2, and consequently the state of the building where the child device 2 is installed.

In the registration mode, the base-side controller 11 performs a reply process by exhibiting a reply function. That is, the parent device side control unit 11 waits for a request signal from the child device 2. When receiving the request signal from the child device 2 via the parent device side communication unit 12, the parent device side control unit 11 stores the identifier of the child device 2 included in the request signal in the memory. Further, the parent device side control unit 11 generates an encryption key associated with the identifier of the child device 2 (or reads it from the memory). Then, the parent device side control unit 11 transmits a reply signal including this encryption key to the child device 2 that is the transmission source of the request signal via the parent device side communication unit 12.

Also, in the registration mode, the base unit side control unit 11 performs output processing by demonstrating the output function. That is, the parent device side control unit 11 waits for a confirmation signal from the child device 2 after transmitting a reply signal via the parent device side communication unit 12. In the present embodiment, the confirmation signal is a detection signal that is transmitted when the handset 2 operates in the normal mode as will be described later. That is, all signals transmitted when the slave unit 2 operates in the normal mode are detection signals and confirmation signals.

When receiving the confirmation signal via the parent side communication unit 12, the base unit side control unit 11 firstly includes the control data included in the confirmation signal, the identifier of the handset 2, and an error detection code (for example, CRC). (Cyclic Redundancy Check)) are all confirmed to be regular data. The control data includes, for example, a preamble, SFD (Start-of-Frame Delimiter), and the like. When these data are all regular data, the base-side controller 11 reads out the encryption key corresponding to the identifier of the handset 2 included in the confirmation signal from the memory. Then, base unit side control unit 11 attempts to decrypt the encrypted data included in the confirmation signal, using the read encryption key.

On the other hand, if any one of these data includes non-regular data, the base-side controller 11 discards the confirmation signal. For example, when the identifier of the child device 2 included in the confirmation signal does not match the identifier of the child device 2 stored in the memory, the parent device side control unit 11 discards the confirmation signal. The situation in which the non-regular data is included in the confirmation signal is, for example, that there is another slave unit registered in another master unit around the master unit 1, and the detection signal from the other slave unit is used as the master unit. This may occur when the side communication unit 12 receives the data.

If the encrypted data is successfully decrypted, the base-side controller 11 completes registration of the slave unit 2 that is the transmission source of the confirmation signal. Then, base unit side control unit 11 outputs registration information indicating that registration of handset 2 has been completed. On the other hand, when the decryption of the encrypted data fails, the master-side controller 11 does not complete registration of the slave unit 2 that is the transmission source of the confirmation signal. Then, base unit side control unit 11 outputs unregistered information indicating that registration of handset 2 has not been completed.

In the present embodiment, the parent device side control unit 11 outputs registered information or unregistered information by transmitting an e-mail to the mobile terminal owned by the user A1 (B1) via the parent device side communication unit 12. That is, in the present embodiment, the parent device side control unit 11 outputs unregistered information to another device (here, the mobile terminal owned by the user A1 (B1)) different from the child device 2 in the output function. It is configured to output. In the case of registration information, for example, a message such as “Registration of handset 2 with device number XX has been completed” is written in the mail. In addition, if it is unregistered information, the e-mail indicates, for example, “Registration of handset 2 with device number XX failed. Registration has not been completed yet” or “handset 2 with device number XX” "Registration failed. Please start slave unit 2 again." The device number is a unique number assigned to the child device 2. The device number may be an identifier of the child device 2.

The parent device side communication unit 12 is a communication interface for communicating with the child device 2 (or the mobile terminal owned by the user A1 (B1)). The communication method between the parent device side communication unit 12 and the child device 2 (or mobile terminal) does not require, for example, wired communication, Wi-Fi (registered trademark), Bluetooth (registered trademark), or a license. Wireless communication such as low power wireless (specific low power wireless). For this type of low-power radio, specifications such as the frequency band to be used and the antenna power are defined in each country depending on the application. In Japan, low-power radio that uses radio waves in the 920 MHz band or 420 MHz band is defined.

The slave unit 2 is installed at the entrance of a building, for example. Here, the “entrance / exit” is a place connecting the space inside the building and the space outside the building. That is, the subunit | mobile_unit 2 is installed in the window of a building, a shutter, a door, etc., for example. In this embodiment, the subunit | mobile_unit 2 is installed in the window frame 31 of the window 3 of a room. Of course, the subunit | mobile_unit 2 may be installed in all the entrances and exits (a window, a shutter, and a door) of a building.

The subunit | mobile_unit 2 has the subunit | mobile_unit side control part 21, the subunit | mobile_unit side communication part 22, the electric power generation part 23, and the determination part 24. FIG. In the memory of the slave unit side control unit 21, for example, an identifier of the slave unit 2 and an encryption key used for communication with the master unit 1 are stored.

The slave unit side control unit 21 is configured to operate in at least two modes of a normal mode and a registration mode. In this embodiment, the subunit | mobile_unit side control part 21 is comprised so that the operation | movement in a normal mode and the operation | movement in a registration mode may be switched according to the determination result in the determination part 24 mentioned later.

In the normal mode, the slave unit side control unit 21 executes a detection process. That is, the slave unit side control unit 21 monitors the state of the part related to the installation location of the slave unit 2. In the present embodiment, the slave unit 2 is installed in the window frame 31 of the window 3. Therefore, the subunit | mobile_unit side control part 21 will detect that the window 3 is in the open state if the window 3 is open, and will detect that the window 3 is in the closed state if the window 3 is closed. For example, when the handset 2 is installed on a door lock of the building, the handset-side control unit 21 detects that the lock is in a locked state if it is locked, and locks if it is unlocked. Detects that the tablet is unlocked. The subunit | mobile_unit side control part 21 encrypts the detection data (namely, the data which the subunit | mobile_unit 2 has) relevant to the installation place of the subunit | mobile_unit 2 with an encryption key. This encryption key is an encryption key stored in the initial state of the handset 2 or an encryption key included in a reply signal from the base unit 1. And the subunit | mobile_unit side control part 21 transmits a detection signal to the main | base station 1 via the subunit | mobile_unit side communication part 22. FIG. Here, the child device side control unit 21 may transmit the detection signal to the parent device 1 a plurality of times via the child device side communication unit 22.

Here, the detection signal is a signal including the identifier of the slave unit 2 and encrypted data obtained by encrypting the detection data, and is also a confirmation signal. That is, in the present embodiment, the detection process of the slave unit side control unit 21 in the normal mode corresponds to a confirmation process that is executed when the slave unit side control unit 21 exhibits the confirmation function.

In the registration mode, the slave unit side control unit 21 performs the request process by exhibiting the request function. That is, the slave unit side control unit 21 transmits a request signal to the master unit 1 via the slave unit side communication unit 22. The request signal includes an identifier of the child device 2 and request data for requesting registration in the parent device 1. Further, when receiving the return signal via the handset side communication unit 22, the handset side control unit 21 stores the encryption key included in the received return signal in the memory. Here, when the encryption key is already stored in the memory, the slave-side controller 21 overwrites the encryption key included in the return signal in the memory. That is, when the handset 2 has another encryption key different from the encryption key included in the reply signal, the handset-side control unit 21 updates another encryption key to the encryption key included in the reply signal. It is configured as follows.

The slave unit side communication unit 22 is a communication interface for communicating with the master unit 1. As described above, the slave unit side communication unit 22 is, for example, wired communication, or Wi-Fi (registered trademark), Bluetooth (registered trademark), and a low power wireless (specific low power wireless) that does not require a license. Communicate with the base unit side communication unit 12 of the base unit 1 by wireless communication such as.

The power generation unit 23 is a vibration-type power generation device that generates power by converting vibration energy into electrical energy using a piezoelectric element, or an electromagnetic induction-type power generation device that generates an induced voltage in the coil by relative movement between the coil and the permanent magnet. And so-called energy harvester. For example, when the handset 2 is installed in the window frame 31 of the window 3, the power generation unit 23 generates power by an operation of opening and closing the window 3. The power generation unit 23 moves not only the operation of opening and closing the window 3 by moving the window frame 31 on the side close to the installation location of the slave unit 2, but also moving the window frame 31 on the side far from the installation location of the slave unit 2. You may be comprised so that it may generate electric power by the operation | movement which opens and closes the window 3. FIG. In other words, the power generation unit 23 is configured to generate electric power by movement of a portion (here, the window 3) related to the installation location (here, the window frame 31) of the slave unit 2.

And in this embodiment, the subunit | mobile_unit side control part 21 receives the electric power supply from the electric power generation part 23, and is comprised so that it may drive. That is, the subunit | mobile_unit 2 is not started unless the electric power generation part 23 generates electric power by operation | movement, such as opening and closing of the window 3, for example. In other words, in the handset 2, the user A1 (B1) operated a part (here, the window 3) related to the place where the handset 2 is installed (here, the window frame 31) such as opening and closing of the window 3. Start only for a certain period of time.

The determination unit 24 is composed of, for example, a time constant circuit. The subunit | mobile_unit side control part 21 is comprised so that the space | interval which the subunit | mobile_unit 2 starts based on the determination result of the determination part 24 may be determined. Specifically, a voltage is input to the determination unit 24 from the slave unit side control unit 21, and this input voltage drops according to the time constant of the time constant circuit. And the output voltage of the determination part 24 is input into the subunit | mobile_unit side control part 21. FIG. Therefore, the subunit | mobile_unit side control part 21 can determine the space | interval (here the space | interval which opens and closes the window 3) which the subunit | mobile_unit 2 starts based on the output voltage of the determination part 24. FIG.

In the present embodiment, when the user A1 (B1) opens (or closes) the window 3 in a state where the child device 2 is stopped, the power generation unit 23 generates power, thereby starting the child device 2. The subunit | mobile_unit side control part 21 determines whether the subunit | mobile_unit 2 started with the predetermined pattern. And the subunit | mobile_unit side control part 21 operate | moves in registration mode, when the starting pattern of the subunit | mobile_unit 2 corresponds with a predetermined pattern. On the other hand, the slave side controller 21 operates in the normal mode when the activation pattern of the slave unit 2 does not match the predetermined pattern. For example, when the user A1 (B1) opens and closes the window 3 a plurality of times within a predetermined period, two or more intervals among the intervals at which the slave unit 2 is activated are “t1” seconds. And the other interval is “t2” (> “t1”) seconds or more, and so on.

(3) Operation Hereinafter, an operation during registration work in the wireless communication system 100 according to the present embodiment will be described with reference to FIG. Here, a case will be described in which a slave unit 2 is registered in the master unit 1 when a building is newly constructed, that is, in a state where there is almost no radio shielding such as furniture that interferes with communication or there is no radio wave condition. . Here, a case where only one slave unit 2 to be registered exists in the communication range of the master unit 1 will be described. Of course, the registration of the handset 2 to the base unit 1 is not limited to when a building is newly constructed, and may be performed at any time. Further, a plurality of slave units 2 to be registered may exist in the communication range of the master unit 1.

Registration work is performed by users A1 and B1. The users A1 and B1 shown in FIG. 3 are both contractors who install the master unit 1 and the slave unit 2. Of course, both the users A1 and B1 may be other than the installer. The users A1 and B1 may be different people or the same person. In the example shown in FIG. 3, the user A1 performs an operation of opening and closing the window 3 of the window frame 31 in which the slave unit 2 is installed, and the user B1 performs the operation of the master unit 1, but the opposite is true. May be.

Before the users A1 and B1 perform the operation, the base-side controller 11 operates in the normal mode (step S101). First, the user B1 operates a switch of the parent device 1 or a portable terminal owned by the user B1 (step S102). Then, base unit side control unit 11 shifts from the operation in the normal mode to the operation in the registration mode (step S103). Therefore, the parent device side control unit 11 waits for a request signal from the child device 2 thereafter.

Next, the user A1 opens and closes the window 3 with a predetermined pattern. In other words, the user A1 operates a part related to the installation location of the child device 2 in a predetermined pattern (step S104). Then, the power generation unit 23 generates power by opening and closing the window 3, and the slave unit 2 is activated (step S105). And the subunit | mobile_unit side control part 21 determines whether the starting pattern of the subunit | mobile_unit 2 corresponds to a predetermined pattern. Here, since the user A1 opens and closes the window 3 in a predetermined pattern, the child device side control unit 21 determines that the activation pattern of the child device 2 matches the predetermined pattern (step S106). And the subunit | mobile_unit side control part 21 starts the operation | movement in registration mode (step S107).

In the registration mode, the slave unit side control unit 21 executes a request process (step S108). And the subunit | mobile_unit side control part 21 transmits a request signal to the main | base station 1 via the subunit | mobile_unit side communication part 22. FIG. When receiving the request signal from the child device 2, the parent device side control unit 11 executes a reply process (step S109). Then, the parent device side control unit 11 transmits a reply signal to the child device 2 via the parent device side communication unit 12. When receiving the return signal from base unit 1, slave unit side control unit 21 stores the encryption key included in the received return signal in the memory (step S110). Then, the subunit | mobile_unit 2 stops when the electric power supplied from the electric power generation part 23 runs out (step S111).

At this point in time, the master-side control unit 11 stores the identifier of the slave unit 2 that has transmitted the request signal in the memory, but the registration of the slave unit 2 has not yet been completed. That is, at this point, it can be said that the parent device side control unit 11 temporarily registers the child device 2 that is the transmission source of the request signal.

Next, the user A1 opens and closes the window 3. In other words, the user A1 operates a part related to the installation location of the child device 2 (step S112). Here, the user A1 does not open and close the window 3 in a predetermined pattern, but simply performs an operation of opening (or closing) the window 3 once. Then, the power generation unit 23 generates power by opening and closing the window 3, and the slave unit 2 is activated (step S113). And the subunit | mobile_unit side control part 21 determines whether the starting pattern of the subunit | mobile_unit 2 corresponds to a predetermined pattern. Here, since the user A1 has not opened and closed the window 3 in a predetermined pattern, the child device side control unit 21 determines that the activation pattern of the child device 2 does not match the predetermined pattern (step S114). And the subunit | mobile_unit side control part 21 starts the operation | movement in normal mode (step S115).

In the normal mode, the handset-side control unit 21 executes a detection process (step S116). And the subunit | mobile_unit side control part 21 transmits a detection signal to the main | base station 1 via the subunit | mobile_unit side communication part 22. FIG. As already described, the detection process corresponds to a confirmation process. The detection signal corresponds to a confirmation signal. When receiving the detection signal (confirmation signal), base unit side control unit 11 executes an output process (step S117). Then, the parent device side control unit 11 sends a notification signal including registration information when the decryption of the encrypted data is successful, and a notification signal including unregistered information when the decryption of the encrypted data fails. It transmits to the portable terminal which user B1 possesses via the communication part 12. Here, although the main | base station 1 is transmitting the notification signal to the portable terminal which the user B1 owns, you may transmit a notification signal to the portable terminal which the user A1 owns, and a notification signal to both portable terminals May be sent.

Next, the operation of the base unit 1 at the time of re-registration work in the wireless communication system 100 of the present embodiment will be described with reference to FIG. The registration operation is performed again when, for example, the user A1 (B1) receives unregistered information from the parent device 1 and learns that the child device 2 is not registered in the parent device 1. In the following, it is assumed that base unit 1 is operating in the registration mode. In the following, it is assumed that the handset 2 operates in the normal mode by the operation of the user A1 and a detection signal (confirmation signal) is transmitted from the handset 2.

The parent device side control unit 11 receives the request signal via the parent device side communication unit 12 (step S201). Then, the parent device side control unit 11 executes a reply process (step S202). Here, the identifier of the child device 2 acquired at the previous registration work is stored in the memory of the parent device side control unit 11. Therefore, the parent device side control unit 11 compares whether or not the identifier of the child device 2 acquired this time is the same as the identifier of the child device 2 stored in the memory (step S203). When the identifier of the child device 2 is the same (step S203: Yes), the parent device side control unit 11 increases the transmission strength of the reply signal by increasing the transmission output (step S204). On the other hand, when the identifiers of slave units 2 are not the same (step S203: No), base unit side control unit 11 maintains the transmission strength of the return signal at the current transmission strength. Thereafter, the parent device side control unit 11 transmits a reply signal to the child device 2 via the parent device side communication unit 12 (step S205).

That is, in the present embodiment, the parent device side control unit 11 is configured to increase the transmission strength of the reply signal when receiving a request signal including the identifier of the same child device 2 at least twice. For this reason, in the present embodiment, it is easy for the slave unit 2 to receive a reply signal from the master unit 1 without moving the master unit 1 closer to the slave unit 2 at the time of re-registration work. That is, in the present embodiment, at the time of re-registration work, the user A1 (B1) can easily complete the registration of the slave unit 2 to the master unit 1 without interrupting other tasks and moving the master unit 1.

Here, it is conceivable to increase the transmission strength of the reply signal from the initial registration, but the reason why the transmission strength of the reply signal is relatively weak at the initial registration is as follows. That is, after installing the handset 2, the radio wave condition of the space where the base unit 1 and the handset 2 exist is changed by newly installing furniture or changing the position of existing furniture ( It is estimated that it will deteriorate. Therefore, by making the transmission strength of the reply signal relatively weak from the time of initial registration, it is easy to grasp the radio wave condition of the space where the parent device 1 and the child device 2 exist when the child device 2 is installed.

In general, the reception sensitivity of the base unit 1 is higher than the reception sensitivity of the handset 2. For this reason, when the slave unit 2 is registered using a reply signal having a transmission strength that can be received by the slave unit 2, the master unit 1 can receive a detection signal (confirmation signal) having a weaker transmission strength than the reply signal. is there. Therefore, if the transmission strength of the reply signal is relatively weak from the time of initial registration, even if the radio wave condition deteriorates after the handset 2 is installed, a detection signal (confirmation signal) is received from the handset 2. This is because it can be secured as much as possible.

(4) Modified Example In the present embodiment, the parent device side control unit 11 may store the transmission strength of the return signal when the registration of the child device 2 is successful in the memory. Here, after the slave unit 2 is installed, for example, when the encryption key is damaged or the encryption key is rewritten due to noise, it is necessary to register the slave unit 2 in the master unit 1 again. Further, for example, when the power supply to the base unit 1 is interrupted due to a power failure of the external power source, there is a possibility that the slave unit 2 must be registered again in the base unit 1. In these cases, the base-side controller 11 can easily make the registration process succeed again by transmitting a reply signal at the transmission intensity at the previous registration in the reply process. In addition, it is assumed that the re-registration work in this case is performed by a user A1 (B1) other than the installer, such as a resident of a building.

In the present embodiment, the parent device side control unit 11 may be configured to measure the received signal strength (Received Signal Strength Indicator: RSSI) of the signal from the child device 2. And the main | base station side control part 11 may be comprised so that the subunit | mobile_unit 2 may not be registered, for example, when the received signal strength of a request signal or a detection signal (confirmation signal) is less than a threshold value. Even in this configuration, it is preferable that the base-side controller 11 outputs unregistered information.

In the present embodiment, the base unit side control unit 11 transmits a reply signal including only the encryption key to the handset unit 2 via the base unit side communication unit 12 in the reply process, but the present invention is limited to this. is not. For example, the base unit side control unit 11 may transmit a reply signal including the identifier of the handset 2 to the handset 2 via the base unit side communication unit 12 in addition to the encryption key in the reply process. In this case, even if there is a possibility that the slave unit 2 may receive a reply signal from another master unit, the slave unit 2 stores the encryption key included in the reply signal including its own identifier, thereby It is possible to obtain the key correctly. The reply signal from the other parent device that is not the transmission destination of the request signal does not include the identifier of the child device 2, and the reply signal from the parent device 1 that has received the request signal includes the identifier of the child device 2. Because.

In the present embodiment, the parent device side control unit 11 is configured to increase the transmission strength of the return signal when receiving a request signal including the identifier of the same child device 2 at least twice. It may be a configuration. For example, even if the parent device side control unit 11 receives a request signal including the identifier of the same child device 2 twice, between the reception of the first request signal and the reception of the second request signal. If the connection with the external power source is disconnected, the transmission intensity of the return signal does not need to be increased. This is because there is a possibility that the user A1 (B1) temporarily moves the master unit 1 to the vicinity of the slave unit 2 and forcibly completes the registration of the slave unit 2 during the registration operation again. In this case, in order to move the parent device 1 to the vicinity of the child device 2, the connection between the parent device 1 and the external power source may be disconnected by removing the parent device 1 from the outlet. Even if the user A1 (B1) moves the base unit 1 and performs illegal registration, the transmission strength of the reply signal is stored in the memory of the base unit side control unit 11 even though the registration is performed again. A log indicating the contents of which has not changed is stored. For this reason, for example, a user A1 (B1) other than the installer, such as a resident of a building, can know that there has been an unauthorized registration.

In addition, when receiving a request signal including the identifier of the same slave unit 2 more than once, the base unit side control unit 11 is configured to increase the transmission strength of the return signal every time the request signal is received. Also good.

In the present embodiment, the base-side controller 11 directly notifies the mobile terminal owned by the user A1 (B1) using a wireless communication means such as Wi-Fi (registered trademark) or Bluetooth (registered trademark). It is configured to transmit a signal. This is because at the stage where the user A1 (B1) performs the registration work, there is a high possibility that the network such as the Internet is not constructed because the building to be worked on is newly constructed. Of course, when the network has already been constructed, the base-side controller 11 may be configured to transmit a notification signal to the mobile terminal owned by the user A1 (B1) via the network.

In this embodiment, the mobile terminal owned by the user A1 (B1) is a smartphone, but the present invention is not limited to this. For example, the portable terminal may be a portable personal computer such as a PDA (Personal Digital Assistant), a tablet terminal, and a laptop.

In the present embodiment, the parent device 1 registers only one child device 2, but a plurality of child devices 2 can be registered. In this case, the user A1 (B1) may perform registration work for each of the plurality of slave units 2. In this case, in the portable terminal owned by the user A1 (B1), for example, the registration status of the plurality of slave units 2 and the detection data of the plurality of slave units 2 can be displayed on the display. Therefore, the user A1 (B1) can confirm the registration status of the plurality of slave units 2 and the state of the plurality of slave units 2, and can indirectly grasp the radio wave status at the time of registration.

In this embodiment, the parent device 1 monitors the state of the building where the child device 2 is installed by monitoring the state of the child device 2, but may have other configurations. For example, when the parent device 1 communicates wirelessly with a server installed outside a building, the parent device 1 may transmit detection data acquired from the child device 2 to the server (or cloud computing). In this case, the server (or cloud computing) monitors the state of the child device 2 by acquiring the detection data from the parent device 1. In this case, the master unit 1 functions as a relay that relays communication between the slave unit 2 and the server (or cloud computing).

In the present embodiment, the slave-side controller 21 is configured to execute the request process in the registration mode and execute the confirmation process in the normal mode, but may have other configurations. For example, if the power generation amount by the power generation unit 23 is sufficiently large, the slave unit side control unit 21 may be configured to execute both the request process and the confirmation process in the registration mode. With this configuration, it is possible to perform a registration work and a confirmation work as to whether or not the registration has been successful by a single operation by the user A1 (B1), thereby simplifying the work.

In the present embodiment, the slave unit 2 is configured to monitor the entrance / exit of the building by being installed at the entrance / exit of the building, but may have another configuration. For example, the subunit | mobile_unit 2 may be installed in switches, such as lighting of a building, an air conditioning facility, and an electrical appliance. In this case, the power generation part 23 of the subunit | mobile_unit 2 can generate electric power by on / off switching operation of a switch. In this case, assuming that a third party who has entered the building operates the switch, the slave unit-side control unit 21 monitors the intrusion of the third party into the building by monitoring on / off of the switch. Is possible. That is, in this case, it can be said that the handset side control unit 21 indirectly monitors the entrance of the building.

In the present embodiment, the building is a detached house, but the present invention is not limited to this. For example, the building may be a dwelling unit of an apartment house or an office of a building. That is, the building may be a building in which the parent device 1 and the child device 2 are installed by the user A1 (B1).

Further, the same functions as those of the wireless communication system 100 may be realized by the base unit 1, a control method of the base unit 1, a program, a non-transitory recording medium storing the program, and the like. The base unit 1 according to one aspect includes a base unit side control unit 11. The base-side controller 11 has a reply function and an output function. When the reply function receives a request signal including an identifier of the slave unit 2 and request data for requesting registration in the master unit 1 from the slave unit 2 capable of wireless communication, the reply function is linked to the slave unit 2 This is a function for transmitting a reply signal including an encryption key to the handset 2. When the output function receives the confirmation signal from the slave unit 2, it tries to decrypt the encrypted data included in the confirmation signal. If the decryption cannot be performed, it outputs unregistered information indicating that the registration of the slave unit 2 has not been completed. It is a function to do. The confirmation signal includes encrypted data obtained by encrypting the data held by the child device 2 with the encryption key included in the reply signal, and the identifier of the child device 2.

Further, the control method of base unit 1 according to one aspect includes a reply step and an output step. When the reply step receives a request signal including the identifier of the slave unit 2 and request data for requesting registration in the master unit 1 from the slave unit 2 capable of wireless communication, the reply step is linked to the slave unit 2 In this step, a reply signal including the encryption key is transmitted to the handset 2. When the confirmation signal is received from the slave unit 2, the output step attempts to decrypt the encrypted data included in the confirmation signal. If the decryption cannot be performed, unregistered information indicating that the registration of the slave unit 2 is not completed is output. It is a step to do. The confirmation signal includes encrypted data obtained by encrypting the data held by the child device 2 with the encryption key included in the reply signal, and the identifier of the child device 2.

Also, the program according to one aspect causes the base unit 1 that is a computer system to execute a reply process and an output process. When the reply process receives a request signal including an identifier of the slave unit 2 that can communicate wirelessly with the master unit 1 and request data for requesting registration to the master unit 1, the encryption process associated with the slave unit 2 is performed. This is processing for transmitting a reply signal including a key to the handset 2. When receiving the confirmation signal, the output process attempts to decrypt the encrypted data included in the confirmation signal. If the decryption cannot be performed, the output process outputs unregistered information indicating that registration of the slave unit 2 has not been completed. . The confirmation signal includes encrypted data obtained by encrypting the data held by the child device 2 with the encryption key included in the reply signal, and the identifier of the child device 2.

(Summary)
As described above, the wireless communication system (100) according to the first aspect includes the parent device (1) and the child device (2) capable of wirelessly communicating with the parent device (1). The parent device (1) has a parent device side control unit (11). The subunit | mobile_unit (2) has a subunit | mobile_unit side control part (21). The slave unit side control unit (21) has a request function for transmitting to the master unit (1) a request signal including the identifier of the slave unit (2) and request data for requesting registration in the master unit (1). Have. When receiving the request signal, the parent device side control unit (11) has a return function for transmitting a return signal including the encryption key associated with the child device (2) to the child device (2). The slave unit side control unit (21) receives a confirmation signal including encrypted data obtained by encrypting data held by the slave unit (2) with an encryption key included in the return signal and an identifier of the slave unit (2). It has a confirmation function to transmit to the main unit (1). When receiving the confirmation signal, the base unit side control unit (11) tries to decrypt the encrypted data included in the confirmation signal. If the decryption cannot be performed, it indicates that registration of the slave unit (2) is not completed. It has an output function for outputting registration information.

This configuration has an advantage that the user (A1 (B1)) can easily grasp the registration status of the slave unit (2) in the master unit (1). Hereinafter, this advantage will be described. When registering the slave unit (2) in the master unit (1), the slave unit (2) may not be able to receive a reply signal with sufficient strength due to poor radio wave conditions and may not be able to acquire an encryption key. In addition, the radio wave condition is good and the reply signal has sufficient strength, but the slave unit (2) may not be able to acquire the encryption key correctly due to interference with radio waves emitted by the surrounding electrical equipment. . In these cases, the encrypted data included in the detection signal (confirmation signal) from the child device (2) is encrypted using an encryption key different from the encryption key transmitted from the parent device (1). become. For this reason, the parent device (1) cannot decrypt the encrypted data and cannot complete the registration of the child device (2).

Further, when the slave unit (2) transmits a request signal, for example, another master unit in an adjacent building has also shifted to the registration mode, and the other master unit also sends a request signal from the slave unit (2). May receive. In this case, the slave unit (2) acquires the encryption key used for communication with the other master unit by receiving the reply signal from the other master unit, instead of the master unit (1) to be originally registered. there is a possibility. That is, there is a possibility that the child device (2) is registered in another parent device. Then, the encrypted data included in the detection signal (confirmation signal) from the child device (2) is encrypted with the encryption key acquired from the other parent device. For this reason, the parent device (1) that is originally desired to be registered cannot decrypt the encrypted data and cannot complete the registration of the child device (2).

In addition, during operation in the registration mode, the master unit (1) may temporarily fail, and thus the detection signal (confirmation signal) from the slave unit (2) may not be received correctly. Also in this case, the parent device (1) cannot decrypt the encrypted data and cannot complete registration of the child device (2).

In any of the above cases, if the user (A1 (B1)) cannot know that the child device (2) is not correctly registered in the parent device (1), the child device (2) becomes the parent device. (1) is left unregistered correctly. Then, the master unit (1) cannot acquire detection data from the slave unit (2) to be monitored, and the wireless communication system (100) may not function correctly.

Therefore, in the wireless communication system (100) according to the first aspect, the base-side controller (11) has a function of outputting unregistered information as described above. Therefore, according to this configuration, in any of the above cases, the user (A1 (B1)) knows that the child device (2) is not correctly registered in the parent device (1) by the unregistered information. be able to. That is, according to this configuration, the user (A1 (B1)) can easily grasp the registration status of the slave unit (2) in the master unit (1). Therefore, according to this configuration, it is possible to prevent the user (A1 (B1)) from leaving the wireless communication system (100) in a state where the wireless communication system (100) does not function correctly by trying the registration operation again.

In the radio | wireless communications system (100) which concerns on a 2nd aspect, in a 1st aspect, the main | base station side control part (11) is unregistered toward the other apparatus different from a subunit | mobile_unit (2) in an output function. It is configured to notify information.

According to this configuration, compared to the case where the parent device (1) itself outputs unregistered information, the user (A1 (B1)) at a position away from the parent device (1) transmits the child device (2). There is an advantage that it is easy to notice that the registration is not completed. For example, when the other device is a portable terminal owned by the user (A1 (B1)), the user (A1 (B1)) is notified of unregistered information to the portable terminal, so that the child device (2) It is possible to notice that registration has not been completed. However, this configuration is not essential, and the base-side controller (11) may output unregistered information by, for example, causing a light emitting element to emit light or reproducing sound from a speaker.

In the radio | wireless communications system (100) which concerns on a 3rd aspect, in the 1st or 2nd aspect, the main | base station side control part (11) transmits the request signal containing the identifier of the same subunit | mobile_unit (2) at least twice. When receiving the above, it is configured to increase the transmission intensity of the reply signal.

This configuration makes it easier for the slave unit (2) to receive the reply signal than when the reply signal is retransmitted with the same transmission strength. In other words, according to this configuration, when trying to register again, the slave unit (2) can easily acquire the encryption key transmitted from the master unit (1), and as a result, the registration operation can be easily performed again. There is an advantage that. However, this configuration is not essential, and the base-side controller (11) does not change the transmission strength of the reply signal even when the request signal including the identifier of the same slave unit (2) is received twice or more. It may be configured.

In the wireless communication system (100) according to the fourth aspect, in any of the first to third aspects, the slave unit side control unit (21) is configured as follows. That is, when the slave unit (21) has another encryption key different from the encryption key included in the reply signal, the slave unit side control unit (21) encrypts another encryption key in the reply signal. It is configured to update to a key.

According to this configuration, there is an advantage that the slave unit (2) can store the correct encryption key by updating even if it stores the wrong encryption key. For example, even when the slave unit (2) stores an encryption key of another master unit different from the master unit (1) to register the slave unit (2), the master unit (1) to register the encryption key is stored. It is possible to update to an encryption key. However, this configuration is not essential, and the slave unit side control unit (21) may be configured to update the encryption key when, for example, an operation of the user (A1 (B1)) is received.

In the wireless communication system (100) according to the fifth aspect, in any one of the first to fourth aspects, the slave unit (2) generates power by movement of a part related to a place where the slave unit (2) is installed. A power generation unit (23) that generates and supplies power to the slave unit side control unit (21) is further included.

According to this configuration, for example, an external power source such as a commercial power source or a battery is unnecessary, and therefore, troublesome work such as an operation of connecting a power cable to the slave unit (2) or an operation of replacing the battery when the battery runs out There is an advantage that it becomes unnecessary. However, this structure is not essential and the subunit | mobile_unit (2) does not need to have the electric power generation part (23). In this case, the slave unit side control unit (21) is driven by receiving power supplied from the external power source.

The base unit (1) according to the sixth aspect includes a base unit side control unit (11). The parent device side control unit (11) has a reply function and an output function. When the reply function receives a request signal including an identifier of the slave unit (2) and request data for requesting registration in the master unit (1) from the slave unit (2) capable of wireless communication, This is a function for transmitting a reply signal including the encryption key associated with (2) to the slave unit (2). When receiving the confirmation signal from the slave unit (2), the output function attempts to decrypt the encrypted data included in the confirmation signal. If the decryption cannot be performed, the output function indicates that registration of the slave unit (2) is not completed. This function outputs registration information. The confirmation signal includes encrypted data obtained by encrypting the data held by the slave unit (2) with the encryption key included in the return signal, and the identifier of the slave unit (2).

This configuration has an advantage that the user (A1 (B1)) can easily grasp the registration status of the slave unit (2) in the master unit (1).

The control method of the parent device (1) according to the seventh aspect includes a reply step and an output step. When the reply step receives a request signal including the identifier of the slave unit (2) and request data for requesting registration in the master unit (1) from the slave unit (2) capable of wireless communication, In this step, a reply signal including the encryption key associated with (2) is transmitted to the child device (2). When the confirmation signal is received from the slave unit (2), the output step attempts to decrypt the encrypted data included in the confirmation signal. If the decryption cannot be performed, it indicates that registration of the slave unit (2) is not completed. This is a step of outputting registration information. The confirmation signal includes encrypted data obtained by encrypting the data held by the slave unit (2) with the encryption key included in the return signal, and the identifier of the slave unit (2).

The program according to the eighth aspect causes the base unit (1), which is a computer system, to execute a reply process and an output process. When the reply process receives a request signal including an identifier of the slave unit (2) that can communicate wirelessly with the master unit (1) and request data for requesting registration to the master unit (1), This is a process of transmitting a reply signal including the encryption key associated with 2) to the slave unit (2). When the confirmation signal is received, the output process attempts to decrypt the encrypted data included in the confirmation signal. If the decryption cannot be performed, the output process outputs unregistered information indicating that the registration of the slave unit (2) is not completed. It is. The confirmation signal includes encrypted data obtained by encrypting the data held by the slave unit (2) with the encryption key included in the return signal, and the identifier of the slave unit (2).

The wireless communication system 100, the parent device 1, the control method of the parent device 1, and the program according to the embodiment have been described above. However, the embodiment described above is only one of various embodiments of the present invention. The above-described embodiment can be variously changed according to the design or the like as long as the object of the present invention can be achieved.

DESCRIPTION OF SYMBOLS 1 Main | base station 11 Main | base station side control part 2 Sub-unit 21 Sub-unit side control part 23 Power generation part 100 Wireless communication system

Claims

With the parent machine,
A handset capable of wirelessly communicating with the base unit,
The master unit has a master unit side control unit,
The slave unit has a slave unit side control unit,
The slave unit side control unit has a request function for transmitting a request signal including the identifier of the slave unit and request data for requesting registration to the master unit to the master unit,
When receiving the request signal, the base unit side control unit has a reply function of transmitting a reply signal including an encryption key associated with the slave unit to the slave unit,
The slave unit side control unit transmits to the master unit a confirmation signal including encrypted data obtained by encrypting data of the slave unit with the encryption key included in the reply signal and an identifier of the slave unit. It has a confirmation function to send,
When the master unit side control unit receives the confirmation signal, it tries to decrypt the encrypted data included in the confirmation signal, and if it cannot be decrypted, it indicates that the registration of the slave unit is not completed. A wireless communication system having an output function for outputting information.
The wireless communication system according to claim 1, wherein the parent device side control unit is configured to notify the unregistered information to another device different from the child device in the output function.
The base unit side control unit is configured to increase the transmission strength of the reply signal when the request signal including the same slave unit identifier is received at least twice. Wireless communication system.
When the slave unit has another encryption key different from the encryption key included in the reply signal, the slave unit side control unit uses the encryption key included in the reply signal as the other encryption key. The wireless communication system according to any one of claims 1 to 3, wherein the wireless communication system is configured to be updated.
The said subunit | mobile_unit has further the electric power generation part which generate | occur | produces electric power by the movement of the site | part relevant to the installation place of the said subunit | mobile_unit, and supplies electric power to the said subunit | mobile_unit side control part. The wireless communication system described.
A master unit having a control unit on the master unit side,
The base unit side control unit
When a request signal including the identifier of the slave unit and request data for requesting registration in the master unit is received from a slave unit capable of wireless communication, a reply including an encryption key associated with the slave unit A reply function for transmitting a signal to the slave unit;
When receiving a confirmation signal including encrypted data obtained by encrypting the data included in the slave with the encryption key included in the reply signal and the identifier of the slave from the slave, A master unit having an output function for outputting unregistered information indicating that registration of the slave unit is not completed when the encrypted data contained therein is attempted to be decrypted and cannot be decrypted;
A control method of the master unit,
When a request signal including the identifier of the slave unit and request data for requesting registration in the master unit is received from a slave unit capable of wireless communication, a reply including an encryption key associated with the slave unit A reply step of transmitting a signal to the slave unit;
When receiving a confirmation signal including encrypted data obtained by encrypting the data included in the slave with the encryption key included in the reply signal and the identifier of the slave from the slave, An output step of outputting unregistered information indicating that registration of the slave unit is not completed when the encrypted data included is attempted to be decrypted and cannot be decrypted.
To the parent machine that is a computer system,
When a request signal including an identifier of a slave unit that can communicate wirelessly with the master unit and request data for requesting registration to the master unit is received, a reply signal including an encryption key associated with the slave unit A reply process for transmitting to the slave unit;
When receiving a confirmation signal including encrypted data obtained by encrypting data of the slave unit with the encryption key included in the reply signal and an identifier of the slave unit, the encryption included in the confirmation signal Attempting to decrypt data, if the decryption cannot be performed, an output process for outputting unregistered information indicating that registration of the slave unit is not completed;
A program for running