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WO2018190223A1 - Système de communication sans fil, dispositif maître, procédé de commande de dispositif maître, et programme - Google Patents

Système de communication sans fil, dispositif maître, procédé de commande de dispositif maître, et programme Download PDF

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Publication number
WO2018190223A1
WO2018190223A1 PCT/JP2018/014430 JP2018014430W WO2018190223A1 WO 2018190223 A1 WO2018190223 A1 WO 2018190223A1 JP 2018014430 W JP2018014430 W JP 2018014430W WO 2018190223 A1 WO2018190223 A1 WO 2018190223A1
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WO
WIPO (PCT)
Prior art keywords
unit
slave
slave unit
side control
reply
Prior art date
Application number
PCT/JP2018/014430
Other languages
English (en)
Japanese (ja)
Inventor
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 (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by パナソニックＩｐマネジメント株式会社 filed Critical パナソニックＩｐマネジメント株式会社
Priority to JP2019512472A priority Critical patent/JPWO2018190223A1/ja
Publication of WO2018190223A1 publication Critical patent/WO2018190223A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/03—Protecting confidentiality, e.g. by encryption
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/02—Mechanical actuation
    • G08B13/08—Mechanical actuation by opening, e.g. of door, of window, of drawer, of shutter, of curtain, of blind
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
    • G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
    • G08B25/04—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using a single signalling line, e.g. in a closed loop
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/50—Secure pairing of devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/04—Key management, e.g. using generic bootstrapping architecture [GBA]
    • H04W12/047—Key management, e.g. using generic bootstrapping architecture [GBA] without using a trusted network node as an anchor
    • H04W12/0471—Key exchange
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
    • H04W84/20—Leader-follower arrangements

Definitions

  • 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.
  • 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 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.
  • mobile_unit has a subunit
  • 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.
  • 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.
  • 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 includes a parent device side control unit.
  • the base unit side control unit has a reply function and an output function.
  • 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.
  • 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 includes a reply step and an output step.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • mobile_unit 2 has 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.
  • 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.
  • 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.
  • 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.
  • the pairing is referred to as “registration”.
  • 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.
  • 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.
  • 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.
  • the wireless communication system 100 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.
  • 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.
  • the wireless communication system 100 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.
  • 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.
  • 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.
  • 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.
  • base station side control part 11 is comprised so that operation in a normal mode and operation
  • the parent device side control unit 11 waits for a detection signal from the child device 2.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • the base unit side control unit 11 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.
  • SFD Start-of-Frame Delimiter
  • 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.
  • 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.
  • 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.
  • 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.
  • registration information for example, a message such as “Registration of handset 2 with device number XX has been completed” is written in the mail.
  • 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).
  • 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.
  • 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 has the subunit
  • 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.
  • mobile_unit side control part 21 is comprised so that the operation
  • 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 encrypts the detection data (namely, the data which the subunit
  • 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.
  • mobile_unit side control part 21 transmits a detection signal to the main
  • 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.
  • 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.
  • 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.
  • the handset side control unit 21 stores the encryption key included in the received return signal 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.
  • 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.
  • 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.
  • the power generation unit 23 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
  • 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.
  • 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
  • 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.
  • mobile_unit side control part 21 is comprised so that the space
  • the power generation unit 23 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.
  • mobile_unit side control part 21 determines whether the subunit
  • 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.
  • 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.
  • 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.
  • the base-side controller 11 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.
  • the user A1 opens and closes the window 3 with a predetermined pattern.
  • the user A1 operates a part related to the installation location of the child device 2 in a predetermined pattern (step S104).
  • the power generation unit 23 generates power by opening and closing the window 3, and the slave unit 2 is activated (step S105).
  • mobile_unit side control part 21 determines whether the starting pattern of the subunit
  • the child device side control unit 21 determines that the activation pattern of the child device 2 matches the predetermined pattern (step S106).
  • mobile_unit side control part 21 starts the operation
  • the slave unit side control unit 21 executes a request process (step S108). And the subunit
  • 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.
  • slave unit side control unit 21 stores the encryption key included in the received return signal in the memory (step S110). Then, the subunit
  • 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.
  • the user A1 opens and closes the window 3.
  • the user A1 operates a part related to the installation location of the child device 2 (step S112).
  • 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.
  • the power generation unit 23 generates power by opening and closing the window 3, and the slave unit 2 is activated (step S113).
  • mobile_unit side control part 21 determines whether the starting pattern of the subunit
  • 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
  • the handset-side control unit 21 executes a detection process (step S116). And the subunit
  • FIG. As already described, the detection process corresponds to a confirmation process. The detection signal corresponds to a 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.
  • 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.
  • 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.
  • base unit 1 is operating in the registration mode.
  • 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).
  • 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).
  • step S203 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).
  • 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.
  • 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.
  • 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.
  • 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.
  • the slave unit 2 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.
  • 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.
  • 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.
  • 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
  • RSSI Receiveived Signal Strength Indicator
  • 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.
  • 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.
  • 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.
  • 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.
  • the connection between the parent device 1 and the external power source may be disconnected by removing the parent device 1 from the outlet.
  • 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.
  • the base unit side control unit 11 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.
  • 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.
  • a wireless communication means such as Wi-Fi (registered trademark) or Bluetooth (registered trademark).
  • the mobile terminal owned by the user A1 (B1) is a smartphone, but the present invention is not limited to this.
  • the portable terminal may be a portable personal computer such as a PDA (Personal Digital Assistant), a tablet terminal, and a laptop.
  • the parent device 1 registers only one child device 2, but a plurality of child devices 2 can be registered.
  • the user A1 (B1) may perform registration work for each of the plurality of slave units 2.
  • 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.
  • 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).
  • 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.
  • 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.
  • mobile_unit 2 may be installed in switches, such as lighting of a building, an air conditioning facility, and an electrical appliance.
  • mobile_unit 2 can generate electric power by on / off switching operation of a 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.
  • the building is a detached house, but the present invention is not limited to this.
  • 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).
  • the base unit 1 includes a base unit side control unit 11.
  • the base-side controller 11 has a reply function and an output function.
  • 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.
  • the output function receives the confirmation signal from the slave unit 2, it tries to decrypt the encrypted data included in the confirmation signal.
  • 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.
  • the control method of base unit 1 includes a reply step and an output step.
  • 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
  • a reply signal including the encryption key is transmitted to the handset 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.
  • the program causes the base unit 1 that is a computer system to execute a reply process and an output process.
  • 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.
  • 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.
  • the wireless communication system (100) 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).
  • mobile_unit (2) has a subunit
  • 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.
  • 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).
  • 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).
  • 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.
  • 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.
  • 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).
  • the slave unit (2) transmits a request signal
  • 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.
  • 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.
  • the child device (2) is registered in another parent device.
  • 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).
  • 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).
  • 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.
  • 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.
  • base station side control part (11) is unregistered toward the other apparatus different from a subunit
  • the user (A1 (B1)) at a position away from the parent device (1) transmits the child device (2).
  • 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.
  • 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.
  • base station side control part (11) transmits the request signal containing the identifier of the same subunit
  • 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.
  • the slave unit (2) 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • the slave unit (2) 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.
  • 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.
  • this structure is not essential and the subunit
  • the slave unit side control unit (21) is driven by receiving power supplied from the external power source.
  • the base unit (1) includes a base unit side control unit (11).
  • the parent device side control unit (11) has a reply function and an output function.
  • 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).
  • 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.
  • 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
  • a reply signal including the encryption key associated with (2) is transmitted to the child device (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).
  • 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 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.
  • 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).
  • 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).
  • 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 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.
  • 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.

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  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Selective Calling Equipment (AREA)
  • Telephone Function (AREA)

Abstract

La présente invention aborde le problème de difficulté rencontrée lorsqu'un utilisateur essaie de connaître un état d'enregistrement d'un dispositif esclave dans un dispositif maître. Un système de communication sans fil (100) est pourvu d'un dispositif maître (1) et d'un dispositif esclave (2). Une unité de commande côté dispositif esclave (21) comporte une fonction de demande pour transmettre, au dispositif maître (1), un signal de demande comprenant un identifiant du dispositif esclave (2) et des données de demande demandées pour être enregistrées dans le dispositif maître (1). Une unité de commande côté dispositif maître (11) comporte une fonction de réponse pour transmettre, au dispositif esclave (2) lors de la réception du signal de demande, un signal de réponse comprenant une clé de chiffrement associée au dispositif esclave (2). L'unité de commande côté dispositif esclave (21) comporte une fonction de confirmation pour transmettre, au dispositif maître (1), un signal de confirmation comprenant des données chiffrées obtenues par chiffrement de données conservées par le dispositif esclave (2) à l'aide de la clé de chiffrement incluse dans le signal de réponse. L'unité de commande côté dispositif maître (11) comporte une fonction de sortie pour tenter de décoder les données chiffrées lors de la réception du signal de confirmation, et pour, si la tentative est infructueuse, délivrer en sortie des informations non enregistrées.
PCT/JP2018/014430 2017-04-10 2018-04-04 Système de communication sans fil, dispositif maître, procédé de commande de dispositif maître, et programme WO2018190223A1 (fr)

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JP2020198581A (ja) * 2019-06-04 2020-12-10 東芝三菱電機産業システム株式会社 通信システムおよび端末装置
JP7514582B1 (ja) 2024-03-29 2024-07-11 オプテックス株式会社 通信システム、および通信システムの制御方法

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JP2006085434A (ja) * 2004-09-16 2006-03-30 Matsushita Electric Ind Co Ltd 情報端末装置、情報処理の方法及びプログラム
WO2011016245A1 (fr) * 2009-08-06 2011-02-10 パナソニック株式会社 Appareil téléphonique sans fil
US20130171939A1 (en) * 2011-12-30 2013-07-04 Robert Bosch Gmbh Low cost proximity pairing mechanism in wireless personal area networks
WO2015068342A1 (fr) * 2013-11-07 2015-05-14 パナソニックＩｐマネジメント株式会社 Dispositif de terminal et système de communication sans fil

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Publication number Priority date Publication date Assignee Title
JP2006085434A (ja) * 2004-09-16 2006-03-30 Matsushita Electric Ind Co Ltd 情報端末装置、情報処理の方法及びプログラム
WO2011016245A1 (fr) * 2009-08-06 2011-02-10 パナソニック株式会社 Appareil téléphonique sans fil
US20130171939A1 (en) * 2011-12-30 2013-07-04 Robert Bosch Gmbh Low cost proximity pairing mechanism in wireless personal area networks
WO2015068342A1 (fr) * 2013-11-07 2015-05-14 パナソニックＩｐマネジメント株式会社 Dispositif de terminal et système de communication sans fil

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020198581A (ja) * 2019-06-04 2020-12-10 東芝三菱電機産業システム株式会社 通信システムおよび端末装置
JP7179684B2 (ja) 2019-06-04 2022-11-29 東芝三菱電機産業システム株式会社 通信システムおよび端末装置
JP7514582B1 (ja) 2024-03-29 2024-07-11 オプテックス株式会社 通信システム、および通信システムの制御方法

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