WO2024053098A1 - 制御装置、制御システム、制御方法およびプログラム - Google Patents

制御装置、制御システム、制御方法およびプログラム Download PDF

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Publication number
WO2024053098A1
WO2024053098A1 PCT/JP2022/033920 JP2022033920W WO2024053098A1 WO 2024053098 A1 WO2024053098 A1 WO 2024053098A1 JP 2022033920 W JP2022033920 W JP 2022033920W WO 2024053098 A1 WO2024053098 A1 WO 2024053098A1
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Prior art keywords
information
address
dynamic
static
address information
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English (en)
French (fr)
Japanese (ja)
Inventor
貴光 山田
隆佳 外村
真哉 杉野
守正 松田
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Priority to PCT/JP2022/033920 priority Critical patent/WO2024053098A1/ja
Priority to JP2023541543A priority patent/JP7362001B1/ja
Publication of WO2024053098A1 publication Critical patent/WO2024053098A1/ja
Anticipated expiration legal-status Critical
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom

Definitions

  • the present disclosure relates to a control device, a control system, a control method, and a program.
  • An EMS Electronicgy Management System
  • a device via a network using a dynamic address dynamically assigned to the device (for example, see Patent Document 1).
  • this EMS receives an instance list that includes the type of the device and is repeatedly sent by broadcast or multicast within at least a preset period
  • the EMS sends a device identification information request message to the device by broadcast or multicast.
  • the device receives the identification information notification message transmitted based on the source address of the information request message.
  • the EMS specifies the type of the device based on the instance list received from the device, specifies the identification information of the device based on the identification information notification message, and updates the specified device type and identification information with the latest information.
  • Manage in association with dynamic addresses When this EMS receives an instance list that includes the type of the device and is repeatedly sent by broadcast or multicast within at least a preset period, the EMS sends a device identification information request message to the device by broadcast or multicast.
  • the device receives the identification information notification message transmitted based on the source address of
  • a control device that controls a device by communicating with the device via a network uses the UDP protocol to send messages for controlling the device to the device by managing the IP address of the device to be controlled.
  • technology for controlling devices by transmitting and receiving data using the TCP/IP protocol is being provided.
  • the router connected to the network has the function of a DHCP server, and if there is a communication disruption in the network or a temporary interruption in the power supply to the router, the IP addresses may be updated. Then, the control device controls the device when the IP address managed by the device itself becomes different from the IP address actually assigned to the device due to updating of the IP address of each device to be controlled. There is a risk that it will not be possible to properly send the message for the device to the device, and the device will not be able to be controlled properly.
  • the present disclosure has been made in view of the above reasons, and provides a control device that can appropriately manage devices to be controlled after an address update event occurs in which a dynamic address assigned to the devices is updated.
  • the purpose is to provide control systems, control methods, and programs.
  • a control device includes: The device is controlled by transmitting control information for controlling the device to the device based on a dynamic address that is given to the device in a network to which the device belongs and includes network identification information that identifies the network.
  • a device information storage unit that stores , in association with each other; an event occurrence detection unit that detects the occurrence of an address update event in which the dynamic address is updated; When the address update event occurs, one of the dynamic addresses to be searched for the corresponding static address information is selected from among the dynamic address candidates newly assigned to the device, and the selected dynamic address is selected.
  • a static address acquisition unit that sequentially acquires the static address information of all the devices belonging to the network; When the static address information is acquired, among the dynamic address information stored in the device information storage unit, dynamic address information associated with the acquired static address information is sent to the static address request. and a device information update unit that updates the dynamic address information included in the information.
  • the static address acquisition unit searches for corresponding static address information from dynamic address candidates newly assigned to a device.
  • the network Sequentially acquires static address information of all devices belonging to .
  • the device information update section automatically updates the dynamic address information associated with the acquired static address information from among the dynamic address information stored in the device information storage section. update to the dynamic address information included in the target address request information.
  • FIG. 1 Schematic configuration diagram of a control system according to Embodiment 1 of the present disclosure
  • Block diagram showing the hardware configuration of the control system according to Embodiment 1
  • Block diagram showing the functional configuration of a control device according to Embodiment 1
  • a diagram showing an example of information stored in the device information storage unit according to Embodiment 1.
  • Sequence diagram showing the operation of the control system according to Embodiment 1 Flowchart showing an example of the flow of device control processing executed by the control device according to Embodiment 1 Schematic configuration diagram of a control system according to Embodiment 2 of the present disclosure
  • Block diagram showing the hardware configuration of a control system according to Embodiment 2 Block diagram showing the functional configuration of a cloud server and a control device according to Embodiment 2
  • Sequence diagram showing the operation of the control system according to Embodiment 2 Sequence diagram showing the operation of the control system according to Embodiment 2 Flowchart showing an example of the flow of communication control processing executed by the control device according to Embodiment 2 Flowchart showing an example of the flow of device control processing executed by the cloud server according to Embodiment 2 Block diagram showing the functional configuration of a control device according to a modified example Flowchart showing an example of the flow of device control processing executed by the control device according to the modification
  • the control device transmits control information for controlling the device to the device based on a dynamic address that is given to the device in the network to which the device belongs and includes network identification information that identifies the network.
  • Control the equipment by This control device contains model information that indicates the device model, device identification information that identifies the device at the application layer, dynamic address information that indicates a dynamic address, and static address information that indicates a static address unique to the device.
  • an event occurrence detection section that detects the occurrence of an address update event in which a dynamic address is updated; and an event occurrence detection section that detects the occurrence of an address update event in which a dynamic address is updated;
  • a static address acquisition unit that acquires the static address information; and when the static address information is acquired, a static address acquisition unit that is associated with the acquired static address information from among the dynamic address information stored in the device information storage unit.
  • the device information updating section updates the dynamic address information to dynamic address information indicating a dynamic address of a destination of static address request information transmitted to obtain static address information.
  • the control device 1 is connected to a network NW1 to which a device 3 and a router 8 are connected, and the device 3 and the control device 1 are connected via the network NW1. communication is possible.
  • the network NW1 is, for example, a wireless LAN (Local Area Network).
  • the device 3 includes an address acquisition unit (not shown) that acquires IP address information from the router 8 by transmitting connection request information to the router 8, and an address acquisition unit (not shown) that acquires the IP address information from the router 8. and an address storage unit (not shown) for storing the address.
  • the device 3 acquires ARP (Address Resolution Protocol) request information from the device 3 connected to the router 8 and the network NW1, or from the control device 1, the device 3 acquires the IP address information assigned to the device in accordance with the ARP (Address Resolution Protocol) request information. and its own MAC address information to the router 8. Furthermore, the device 3 can store ARP table information that associates the IP addresses given to other devices 3 or the control device 1 with their MAC addresses. Further, when the device 3 obtains response request information that requests the device to send response information including IP address information indicating the device's IP address to the device's own device's IP address as the transmission destination, the device 3 responds to the request. The response information is transmitted to the control device 1.
  • ARP Address Resolution Protocol
  • the router 8 has a DHCP (Dynamic Host Configuration Protocol) functional unit 811, and functions not only as a normal router but also as a DHCP server.
  • DHCP Dynamic Host Configuration Protocol
  • the DHCP function unit 811 receives connection request information from the device 3 or the control device 1 after communication with the device 3 or the control device 1 is cut off or when the device 3 or the control device 1 is started, the DHCP function unit 811 performs a preset plurality of connection requests.
  • the IP address to be assigned to the device 3 or control device 1 that is the source of the connection request information is specified from among the IP addresses. Then, the DHCP function unit 811 transmits IP address information indicating the specified IP address to the source device 3 or control device 1.
  • the control device 1 includes a CPU (Central Processing Unit) 101, a main storage section 102, an auxiliary storage section 103, a communication section 107, and a bus 109 that connects each section.
  • the main storage unit 102 is a volatile memory such as RAM (Random Access Memory), and is used as a work area for the CPU 101.
  • the auxiliary storage unit 103 includes a nonvolatile memory such as a semiconductor memory, functions as a ROM (Read Only Memory), and stores programs for realizing various functions of the control device 1 .
  • the communication unit 107 includes, for example, a wireless module, and performs wireless communication with the device 3 and the router 8.
  • the wireless module includes a signal generation circuit that generates a wireless signal and an antenna, and communicates using, for example, a data link layer communication protocol of the IEEE802.11 series.
  • the CPU 101 loads the program stored in the auxiliary storage unit 103 into the main storage unit 102 and executes it, thereby controlling the device message acquisition unit 111, message type determination unit 112, and device control, as shown in FIG. 113 , MAC address specifying section 114 , MAC address acquiring section 115 , device message transmitting section 116 , device information updating section 117 , event occurrence detecting section 118 , and update status determining section 119 .
  • the auxiliary storage section 103 shown in FIG. 2 includes an ARP table storage section 131, a device information storage section 132, and a device status storage section 133, as shown in FIG.
  • the ARP table storage unit 131 stores ARP table information that associates an IP address given to the device 3 with a MAC address unique to the device 3 in the network NW1 to which the device 3 belongs.
  • the device information storage unit 132 stores a combination of IP address information, model information indicating the type of the device 3, and identification number information assigned to each of the plurality of devices 3 belonging to the network NW1.
  • the MAC address information is stored in association with the MAC address information.
  • the device status storage unit 133 stores parameter information indicating the status of each device 3 in association with model information and identification number information of the device 3.
  • the parameter information includes, for example, when the device 3 is an air conditioner, information indicating a set temperature, a set air volume, the temperature, humidity, etc. of the environment in which the device 3 is installed.
  • the device message acquisition unit 111 Upon acquiring the device message transmitted from the device 3, the device message acquisition unit 111 notifies the message type determination unit 112 of the acquired device message.
  • This device message includes update notification information that notifies that a network update event has occurred in which the state of the network NW1 to which the device 3 is connected has occurred.
  • This network update event occurs when a new IP address is assigned to the device 3 by the DHCP function unit 811 of the router 8 due to the device 3 being newly connected to the network NW1, or when the IP address of the device 3 has expired. This occurs when the IP address of the device 3 is updated by the DHCP function unit 811.
  • the device message also includes device status information including parameter information indicating the status of the device 3, and model information and identification number information of the device 3.
  • the message type determination unit 112 determines that the device message acquired by the device message acquisition unit 111 is device status information
  • the message type determination unit 112 uses the above-mentioned parameter information included in the acquired device status information, the model information of the device 3, and the identification number information.
  • the extracted parameter information is stored in the device status storage unit 133 in association with the model information and identification number information of the device 3. Further, when the message type determination unit 112 determines that the device message acquired by the device message acquisition unit 111 is the response information transmitted from the device 3, the message type determination unit 112 notifies the event occurrence detection unit 118 of the acquired response information.
  • the device control unit 113 generates control information based on at least one of the model information and device identification information corresponding to the device 3 to be controlled stored in the device information storage unit 132.
  • the device control unit 113 determines whether or not the control details of the device 3 need to be updated, based on the device status information of each device 3 stored in the device status storage unit 133.
  • the device control unit 113 determines that it is necessary to update the control content of the device 3, it generates control information corresponding to the updated device control content, and transmits the generated control information to the destination of the control information.
  • the device message transmission unit 116 is notified along with IP address information indicating the IP address assigned to the device 3 and MAC address information indicating the MAC address.
  • the MAC address specifying unit 114 When the MAC address specifying unit 114 is notified of the IP address information of the device 3 to which the control information is transmitted from the device control unit 113, the MAC address specifying unit 114 refers to the ARP table information stored in the ARP table storage unit 131 and identifies the notified IP address. Identify the MAC address corresponding to the IP address indicated by the address information. Then, the MAC address specifying unit 114 notifies the device message transmitting unit 116 of MAC address information indicating the specified MAC address.
  • the event occurrence detection unit 118 detects the occurrence of an address update event in which the IP address is updated by the DHCP function unit 811 of the router 8.
  • the event occurrence detection unit 118 periodically transmits the above-mentioned response request information to the device 3, and after transmitting the response request information, receives the response information from the device 3 to which the response request information is transmitted within a preset reference period. If not obtained, it is determined that an address update event has occurred.
  • the event occurrence detection unit 118 also determines that an address update event has occurred when a startup process for starting the control device 1 is executed.
  • event occurrence detection section 118 determines that an address update event has occurred, it generates event occurrence notification information and notifies MAC address acquisition section 115 and update status determination section 119 of the generated event occurrence notification information.
  • the MAC address acquisition section 115 acquires a candidate IP address that may be newly assigned to the device 3. Select one IP address from among them. Then, the MAC address acquisition unit 115 repeats broadcast transmission of ARP request information including IP address information indicating the selected IP address to the device 3 while changing the IP address information.
  • ARP request information includes IP address information, and is a static address request requesting the device 3 to send ARP reply information including the MAC address information of the device 3 to which the IP address indicated by the included IP address information is assigned. It is information.
  • the IP address information included in this ARP request information indicates any one of the IP addresses that include the same network address as the IP address assigned to the control device 1, and the device for which the MAC address information is to be acquired. This is the target dynamic address information given to No. 3.
  • the MAC address acquisition unit 115 acquires the ARP reply information, it extracts the MAC address information included in the acquired ARP reply information, and converts the extracted MAC address information into the IP address of the device 3 that is the source of the ARP reply information. It is added to the ARP table information stored in the ARP table storage unit 131 in association with the information.
  • the MAC address acquisition unit 115 preferentially acquires MAC address information of the device 3 to which an IP address specified by a number close to the IP address assigned to the control device 1 is assigned. Specifically, it is assumed that the IP address is an IPv4 address, and the IP address given to the control device 1 is "192.168.1.5". In this case, the MAC address acquisition unit 115 fixes the network address of the IP address indicated by the IP address information included in the ARP request information, and sets the host address to "5 ⁇ 1", "5 ⁇ 2", . . . "5 ⁇ ". 4'', ⁇ 5+5'', . . . , ⁇ 5+k (>5)'', . . . and broadcast the ARP request information sequentially.
  • the MAC address acquisition unit 115 notifies the device information update unit 117 of the extracted MAC address information. Further, when the MAC address acquisition unit 115 is notified of update completion notification information, which will be described later, from the update status determination unit 119, the MAC address acquisition unit 115 stops sending APR request information to the device 3.
  • the device message transmitter 116 When the device message transmitter 116 is notified of the control information from the device controller 113, it transmits the notified control information to the destination device 3. Further, when the device message transmission section 116 is notified of the response request information from the event occurrence detection section 118, the device message transmission section 116 transmits the notified response request information to the device 3.
  • the device information update section 117 When the device information update section 117 is notified of the MAC address information from the MAC address acquisition section 115, the device information update section 117 updates the IP address information associated with the acquired MAC address information from among the IP address information stored in the device information storage section 132. , updates the IP address information included in the ARP request information.
  • the update status determination unit 119 refers to the MAC address information stored in the device information storage unit 132 and determines whether all IP address information of the devices 3 connected to the network NW1 has been updated. Specifically, the update status determination unit 119 determines whether or not the MAC address information of all of the devices 3 has been acquired by newly acquiring ARP reply information from all of the devices 3. When the update status determination unit 119 is notified of the above-mentioned event occurrence notification information from the event occurrence detection unit 118, it starts determining the update status of the IP address information of all the devices 3.
  • the update status determination unit 119 determines that the MAC address information of all the devices 3 has been acquired, the update status determination unit 119 sends update completion notification information that notifies that the update of the IP address information of all the devices 3 stored in the device information storage unit 132 has been completed.
  • the MAC address acquisition unit 115 is notified.
  • the control device 1 communicates with the devices 3A and 3B.
  • the above-mentioned address update event such as communication cutoff with the device 3 or the control device 1 or activation of the device 3 or the control device 1 occurs.
  • the DHCP function unit 811 of the router 8 assigns a new IP address to each of the devices 3A, 3B and the control device 1 connected to the network NW1.
  • the control device 1 detects that an address update event has occurred, it selects one IP address from among the IP address candidates that may be newly assigned to the devices 3A and 3B (step S1). .
  • the control device 1 preferentially selects an IP address specified by a number close to the IP address assigned to the control device 1.
  • ARP request information including IP address information indicating the selected IP address is broadcasted from the control device 1 to the devices 3A and 3B (steps S2 and S3).
  • ARP reply information including the MAC address information of the device 3A is transmitted from the device 3A to the control device 1. (Step S4).
  • the control device 1 extracts the MAC address information of the sending device 3A included in the acquired ARP reply information, and stores the ARP table storage unit 131 using the extracted MAC address information.
  • ARP table information to be updated is updated (step S5). Subsequently, the control device 1 updates the IP address information associated with the extracted MAC address information of the device 3A stored in the device information storage unit 132 to the IP address information included in the ARP request information (step S6). .
  • the control device 1 selects another IP address different from the IP address assigned to the device 3A from among the IP address candidates that may be newly assigned to the aforementioned devices 3A and 3B. (Step S7).
  • the control device 1 preferentially selects an IP address specified by a number close to the IP address assigned to the control device 1, as described above.
  • ARP request information including IP address information indicating the selected IP address is broadcasted from the control device 1 to the devices 3A and 3B (steps S8 and S9).
  • ARP reply information including the MAC address information of the device 3B is sent from the device 3B to the control device 1. (Step S10).
  • the control device 1 upon acquiring the ARP reply information, extracts the MAC address information of the sending device 3B included in the acquired ARP reply information, and stores the ARP table storage unit 131 using the extracted MAC address information.
  • ARP table information to be updated is updated (step S11).
  • the control device 1 updates the IP address information associated with the extracted MAC address information of the device 3B stored in the device information storage unit 132 to the IP address information included in the ARP request information (step S12). .
  • the control device 1 refers to the MAC address information stored in the device information storage unit 132 and acquires all ARP reply information transmitted from the devices 3A and 3B connected to the network NW1 to which the control device 1 is connected. If it is determined that the request has been made (step S13), the transmission of ARP request information is stopped.
  • the device 3A when the device status notification time for notifying the control device 1 of the preset status of the devices 3A and 3B arrives, the device 3A generates the above-mentioned device status information (step S15), and the generated device Status information is transmitted from the device 3A to the control device 1 (step S16).
  • the control device 1 acquires the device status information, it extracts parameter information indicating the status of the device 3A included in the acquired device status information and stores it in the device status storage unit 133 (step S17).
  • the control device 1 determines that the control details of the device 3 need to be updated based on the device state information stored in the device state storage unit 133 (step S18).
  • control device 1 generates control information corresponding to the updated device control content (step S19).
  • header information indicating a destination designated by an IP address is added to the control information.
  • the control device 1 refers to the ARP table information stored in the ARP table storage unit 131 and identifies the MAC address corresponding to the IP address indicated by the header information added to the control information.
  • the generated control information is then transmitted from the control device 1 to the device 3A based on the specified MAC address of the device 3A (step S20).
  • the device 3A upon acquiring the control information, the device 3A starts operating based on the acquired control information (step S21).
  • step S101 determines whether the address update event described above has occurred.
  • step S101: No determines whether the address update event has not occurred.
  • step S108 determines that an address update event has occurred.
  • step S101: Yes it is assumed that the event occurrence detection unit 118 determines that an address update event has occurred.
  • the MAC address acquisition unit selects one IP address from among the candidates for IP addresses that may be newly assigned to the device 3, including the same network address as the IP address assigned to the control device 1. Select (step S102).
  • the MAC address acquisition unit 115 broadcasts ARP request information including IP address information indicating the selected IP address to the device 3 (step S103).
  • the MAC address acquisition unit 115 determines whether or not ARP reply information has been acquired from the device 3 (step S104).
  • the MAC address acquisition unit 115 determines that ARP reply information has not been acquired (step S104: No), it selects another IP address from the above-mentioned IP address candidates (step S102), ARP request information including IP address information indicating the selected IP address is broadcast again (step S103).
  • the MAC address acquisition unit 115 determines that ARP reply information has been acquired (step S104: Yes)
  • it extracts the MAC address information included in the acquired ARP reply information, and converts the extracted MAC address information into the ARP reply information.
  • the ARP table information is updated by adding it to the ARP table information in association with the IP address information of the transmission source device 3 (step S105).
  • the device information update unit 117 updates the IP address information associated with the extracted MAC address information of the device 3 stored in the device information storage unit 132 to the IP address information included in the ARP request information (step S106 ).
  • the update status determination unit 119 refers to the MAC address information stored in the device information storage unit 132, and checks all ARP reply information transmitted from the device 3 connected to the network NW1 to which the control device 1 is connected. It is determined whether the information has been acquired (step S107).
  • the update status determination unit 119 determines that there is a device 3 that has not yet acquired ARP reply information among the devices 3 connected to the network NW1 (step S107: No).
  • the MAC address acquisition unit 115 again selects another IP address from among the above-mentioned IP address candidates (step S102), and the processes from step S103 onwards are executed.
  • step S107: Yes the device message acquisition unit 111 acquires the device message. It is determined whether or not this has been done.
  • step S108 determines that the device message has not been acquired.
  • step S111 determines that the device message has not been acquired.
  • step S111 determines that the device message has been acquired (step S108: Yes)
  • the message type determination unit 112 determines whether the device message is device status information (step S109).
  • step S109: No the process of step S111, which will be described later, is executed.
  • the message type determination unit 112 determines that the device message is device status information (step S109: Yes)
  • it stores the device status information in the device status storage unit 133 (step S110).
  • the device control unit 113 refers to the device status information stored in the device status storage unit 133 and determines whether it is necessary to update the control details of the device 3 (step S111).
  • step S111: No the process of step S101 is executed again.
  • step S111 when the device control unit 113 determines that it is necessary to update the control details of the device 3 (step S111: Yes), the device control unit 113 generates control information for updating the control details of the device 3 based on the device status information. do. At this time, the device control unit 113 adds header information indicating the IP address of the destination device 3 to the generated control information. Further, the MAC address specifying unit 114 refers to the ARP table information stored in the ARP table storage unit 131 and specifies the MAC address corresponding to the IP address indicated by the header information added to the control information. Then, the device message transmission unit 116 transmits the control information to the device 3 based on the MAC address of the device 3 to which the specified control information is to be transmitted (step S112). After that, the process of step S101 is executed again.
  • the MAC address acquisition unit 115 selects a corresponding IP address from among candidates for a new IP address to be assigned to the device 3. Select one IP address to search for MAC address information.
  • the MAC address acquisition unit 115 repeats sending ARP request information including IP address information indicating the selected IP address while changing the selected IP address information, so that all the devices 3 belonging to the network NW1 Acquire MAC address information sequentially.
  • the device information update unit 117 updates the IP address information associated with the acquired MAC address information from among the IP address information stored in the device information storage unit 132 to the ARP request information. Update the IP address information included in the .
  • the MAC address information of all devices 3 belonging to network NW1 can be correlated with the updated IP address information with high accuracy. , it is possible to appropriately control the device 3 to be controlled after the address update event occurs.
  • the IP address information indicating the IP address to be searched for the MAC address information includes the same network address as the IP address given to the control device 1. As a result, it is possible to narrow down the search for MAC address information to the network NW1 specified by the same network address. It can save time.
  • the event occurrence detection unit 118 periodically transmits response request information requesting the device 3 to transmit response information to the device 3 belonging to the network NW1, and transmits the response request information. After that, if response information is not acquired from the device 3 to which the response request information is transmitted within a preset reference period, it is determined that an address update event has occurred. Further, the event occurrence detection unit 118 according to the present embodiment determines that an address update event has occurred when a startup process for starting the control device 1 is executed. As a result, the occurrence of communication interruption between the control device 1 and the device 3 can be detected at an early stage, so that the IP address information stored in the device information storage section 132 can be changed to It can be maintained as IP address information indicating the address.
  • the MAC address acquisition unit 115 stops transmitting ARP request information at the time it acquires the MAC address information of all the devices 3 belonging to the network NW1. As a result, unnecessary transmission of ARP request information can be suppressed, so that updating processing of the IP address information stored in the device information storage unit 132 when an address update event occurs can be completed earlier.
  • the MAC address acquisition unit 115 preferentially acquires MAC address information of the device 3 to which an IP address specified by a number close to the IP address assigned to the control device 1 is assigned.
  • the IP address numbers assigned from the DHCP function unit 811 to the control device 1 and each device 3 are relatively close to each other, the time required to obtain the MAC address information of all the devices 3 can be shortened. can.
  • a cloud server In the control system according to the present embodiment, a cloud server generates control information for controlling devices and transmits it to a control device via a wide area network, and the control device transmits control information acquired from the cloud server to the devices.
  • This embodiment differs from the first embodiment in that the device is controlled by transmitting data to.
  • the control system includes a cloud server 2002, a control device 2001 that controls the operation of the device 3 by transmitting control information acquired from the cloud server 2002 to the device 3, Equipped with.
  • NW22 such as the Internet
  • BBR broadband router
  • the control device 2001 has the same hardware configuration as the control device 1 described in the first embodiment.
  • the same components as in Embodiment 1 are given the same reference numerals as in FIG. 2.
  • the CPU 101 loads the program stored in the auxiliary storage unit 103 into the main storage unit 102 and executes the program, so that the device message acquisition unit 2111, the message type determination unit 2112, and the non-capsule message acquisition unit 2111, the message type determination unit 2112, and the non-capsule It functions as an encoding unit 2117, a MAC address identification unit 114, a MAC address acquisition unit 2115, a device message transmission unit 2116, an event occurrence detection unit 2118, an address notification unit 2119, and an encapsulation unit 2120.
  • FIG. 9 the same components as in Embodiment 1 are given the same reference numerals as in FIG. 3.
  • the device message acquisition unit 2111 Upon acquiring the device message transmitted from the device 3 or the device message transmitted from the cloud server 2002 to the control device 2001, the device message acquisition unit 2111 notifies the message type determination unit 2112 of the acquired device message.
  • the message type determination unit 2112 determines that the acquired device message is device status information, it notifies the encapsulation unit 2120 of the acquired device status information. Further, when the message type determination unit 2112 determines that the acquired device message is encapsulated control information transmitted from the cloud server 2002, the message type determination unit 2112 notifies the non-encapsulation unit 2117 of the acquired control information.
  • the decapsulation unit 2117 When the decapsulation unit 2117 is notified of the encapsulated control information from the message type determination unit 2112, the decapsulation unit 2117 removes the header information from the encapsulated control information and then decapsulates the control information.
  • the IP address information and control information of the destination device 3 are extracted, and the extracted IP address information is notified to the MAC address specifying unit 114, and the control information is notified to the device message transmitting unit 2116.
  • the MAC address specifying unit 114 refers to the ARP table information stored in the ARP table storage unit 131 and notifies The MAC address corresponding to the IP address indicated by the received IP address information is identified. Then, the MAC address identifying unit 114 notifies the device message transmitting unit 2116 of MAC address information indicating the identified MAC address.
  • the event occurrence detection unit 2118 detects the occurrence of an address update event in which the IP address is updated by the DHCP function unit 811 of the BBR 2008. Similar to the event occurrence detection section 118 described in Embodiment 1, the event occurrence detection section 2118 periodically transmits the above-mentioned response request information to the device 3, and after transmitting the response request information, a preset standard is set. If response information is not acquired from the device 3 to which the response request information is transmitted within the period, it is determined that an address update event has occurred. The event occurrence detection unit 2118 also determines that an address update event has occurred when a startup process for starting the control device 1 is executed. When the event occurrence detection unit 2118 determines that an address update event has occurred, it generates event occurrence notification information, notifies the generated event occurrence notification information to the MAC address acquisition unit 2115, and transmits it to the cloud server 2002.
  • the MAC address acquisition unit 2115 When the MAC address acquisition unit 2115 is notified of the above-mentioned event occurrence notification information from the event occurrence detection unit 2118, the MAC address acquisition unit 2115 selects one IP address from among the IP address candidates that may be newly assigned to the device 3. do. Then, the MAC address acquisition unit 2115 repeatedly broadcasts ARP request information including IP address information indicating the selected IP address to the device 3 while changing the IP address information, thereby connecting to the local network NW21. The MAC address information of all the devices 3 that have been installed is sequentially acquired.
  • the MAC address acquisition unit 2115 Upon acquiring the ARP reply information, the MAC address acquisition unit 2115 extracts the MAC address information included in the acquired ARP reply information, and combines the extracted MAC address information with the IP address information of the device 3 that is the source of the ARP reply information. The information is added to the ARP table information stored in the ARP table storage unit 131 in association with each other. Further, the MAC address acquisition unit 2115 notifies the address notification unit 2119 of the extracted MAC address information and the IP address information included in the ARP request information transmitted to acquire the MAC address information. Further, upon acquiring acquisition stop command information that instructs to stop sending ARP request information from the cloud server 2002 to the device 3, the MAC address acquisition unit 2115 sends an APR request to the device 3 to acquire the MAC address information. Stop sending information.
  • the address notification unit 2119 When the address notification unit 2119 is notified of the MAC address information and IP address information from the MAC address acquisition unit 2115, the address notification unit 2119 generates address notification information including the notified MAC address information and IP address information and sends it to the cloud server 2002. Send.
  • the encapsulation unit 2120 When the encapsulation unit 2120 is notified of the device status information from the message type determination unit 2112, the encapsulation unit 2120 adds header information for specifying the cloud server 2002 as the destination to the notified device status information, and then transmits the device message. 2116.
  • the device message transmitting section 2116 Based on the MAC address information of the device 3 specified by the MAC address specifying section 114, the device message transmitting section 2116 transmits the control information extracted by the decapsulation section 2117 to the destination device 3. Furthermore, when the device message transmitting section 2116 is notified of the encapsulated device status information from the encapsulating section 2120, the device message transmitting section 2116 transmits the notified device status information to the cloud server 2002 based on the header information.
  • the cloud server 2002 includes a CPU 201, a main storage section 202, an auxiliary storage section 203, a communication section 206, and a bus 209 that connects each section.
  • the CPU 201 loads the program stored in the auxiliary storage unit 203 into the main storage unit 202 and executes it, thereby controlling the encapsulation unit 2211, the encapsulated message transmission unit 2212, and the device control, as shown in FIG. 2213 , address acquisition section 2218 , device information update section 2217 , encapsulated message acquisition section 2215 , non-encapsulation section 2216 , update status determination section 2219 , and command section 2220 .
  • the device information storage unit 2232 associates the MAC address information of the plurality of devices 3 connected to the local network NW21 with the MAC address information of the control device 2001 connected to the local network NW21. memorize it. Furthermore, the device information storage unit 2232 stores a combination of IP address information, model information, and identification number information of each of the plurality of devices 3 in association with the MAC address information of the device 3 for each MAC address information of the control device 2001. are doing.
  • the device status storage unit 2233 stores the above-mentioned parameter information of each device 3 in association with the device type information and identification number information of the device 3.
  • the address acquisition unit 2218 acquires the MAC address information of the device 3 included in the acquired address notification information and the MAC address information.
  • the IP address information included in the ARP request information sent to is extracted and notified to the device information update unit 2217.
  • the device information update section 2217 When the device information update section 2217 is notified of the MAC address information and IP address information from the address acquisition section 2218, the device information update section 2217 updates the IP address information stored in the device information storage section 2232 to be associated with the notified MAC address information. The received IP address information is updated to the notified IP address information.
  • the update status determination unit 2219 refers to the MAC address information stored in the device information storage unit 2232 and determines whether all IP address information of the devices 3 connected to the local network NW21 has been updated. Specifically, the update status determination unit 2219 determines whether the address acquisition unit 2218 has acquired all the MAC address information of the device 3. When the update status determination unit 2219 determines that the MAC address information of all the devices 3 has been acquired, the update status determination unit 2219 sends update completion notification information that notifies that the update of the IP address information of all the devices 3 stored in the device information storage unit 2232 has been completed. The command unit 2220 is notified. Then, the command unit 2220 generates the above-mentioned acquisition stop command information for the control device 2001 and transmits it to the control device 2001.
  • the encapsulated message acquisition unit 2215 Upon acquiring the encapsulated device status information transmitted from the control device 2001, the encapsulated message acquisition unit 2215 notifies the decapsulation unit 2216 of the acquired device status information.
  • the decapsulation unit 2216 extracts the parameter information and the model information and identification number information of the device 3 included in the encapsulated device status information notified from the encapsulated message acquisition unit 2215, and extracts the extracted parameter information and device
  • the model information and identification number information of No. 3 are associated with each other and stored in the device status storage unit 2233.
  • the device control unit 2213 determines whether it is necessary to update the control details of the device 3 based on the device status information of each device 3 stored in the device status storage unit 2233. When the device control unit 2213 determines that it is necessary to update the control details of the device 3, the device control unit 2213 updates at least one of the model information and device identification information corresponding to the device 3 to be controlled stored in the device information storage unit 2232. Based on this, control information corresponding to the updated device control details is generated. Then, the device control unit 2213 adds the IP address information of the device 3 as the destination of the control information stored in the device information storage unit 2232 to the generated control information, and notifies the encapsulation unit 2211 of the result.
  • the encapsulation unit 2211 When the encapsulation unit 2211 is notified of the control information to which the IP address information of the destination of the control information is added from the device control unit 2213, the encapsulation unit 2211 adds a message to the notified control information to specify the control device 2001 as the destination. Header information is added, the message is encapsulated, and the encapsulated message transmission unit 2212 is notified. The encapsulated message transmitting unit 2212 transmits the notified control information to the control device 2001.
  • step S2001 when the address update event described above occurs, the control device 2001 generates the event occurrence notification information described above (step S2001), and the generated event occurrence notification information is sent from the control device 2001. It is transmitted to the cloud server 2002 (step S2002).
  • the cloud server 2002 upon acquiring the event occurrence notification information, the cloud server 2002 starts determining the update status of the IP address information of all the devices 3 stored in the device information storage unit 2232.
  • control device 2001 selects one IP address from among the IP address candidates that may be newly assigned to the devices 3A and 3B (step S1), and then performs a series of steps from steps S2 to S5. processing is executed.
  • control device 2001 extracts the MAC address information of the device 3A from the ARP reply information sent from the device 3A, and the IP address information included in the ARP request information sent to obtain the MAC address information. address notification information including the following (step S2003), and the generated address notification information is transmitted from the control device 2001 to the cloud server 2002 (step S2004).
  • the cloud server 2002 extracts the MAC address information and IP address information of the device 3A included in the acquired address notification information, and extracts the notified MAC address information from among the IP address information stored in the device information storage unit 2232.
  • the IP address information associated with is updated to the notified IP address information (step S2005).
  • control device 2001 selects another IP address from among the above-mentioned IP address candidates (step S7), and then a series of processes from steps S8 to S11 are executed.
  • control device 2001 uses the MAC address information of the device 3B extracted from the ARP reply information sent from the device 3B, and the IP address information included in the ARP request information sent to obtain the MAC address information. address notification information including the following (step S2006), and the generated address notification information is transmitted from the control device 2001 to the cloud server 2002 (step S2007).
  • step S2006 address notification information including the following
  • the generated address notification information is transmitted from the control device 2001 to the cloud server 2002 (step S2007).
  • the cloud server 2002 extracts the MAC address information and IP address information of the device 3B included in the acquired address notification information, and extracts the MAC address information and IP address information of the device 3B from among the IP address information stored in the device information storage unit 2232. , updates the IP address information associated with the notified MAC address information to the notified IP address information (step S2008).
  • the cloud server 2002 refers to the MAC address information stored in the device information storage unit 2232 and stores all updated IP address information of the devices 3A and 3B connected to the network NW21 to which the control device 2001 is connected.
  • the above-mentioned acquisition stop command information is transmitted from the cloud server 2002 to the control device 2001 (step S2010).
  • the control device 2001 stops sending ARP request information to the devices 3A and 3B.
  • the device 3A when the above-mentioned device status notification time arrives, the device 3A generates the device status information described above (step S15), and the generated device status information is transmitted from the device 3A to the control device 2001 (step S16). ).
  • the control device 2001 acquires the device status information, it adds header information for transmitting to the cloud server 2002 to the acquired device status information and encapsulates it (step S2011). Thereafter, the encapsulated device status information is transmitted from the control device 2001 to the cloud server 2002 (step S2012).
  • the cloud server 2002 extracts the parameter information, model information, and identification number information of the device 3A included in the acquired device status information, associates them with each other, and stores them in the device status storage unit 2233. (Step S2013).
  • the cloud server 2002 determines that the control details of the device 3A need to be updated based on the device status information stored in the device status storage unit 2233 (step S2014).
  • the cloud server 2002 generates control information corresponding to the updated device control details, and adds to the generated control information the IP address information of the device 3 that is the destination of the control information stored in the device information storage unit 2232. and encapsulates it (step S2015).
  • the encapsulated control information is transmitted from the cloud server 2002 to the control device 2001 (step S2016).
  • the control device 2001 upon acquiring the encapsulated control information, the control device 2001 decapsulates the control information by removing the header information of the acquired control information (step S2017).
  • control device 2001 refers to the ARP table information stored in the ARP table storage unit 131 and determines the MAC address corresponding to the IP address indicated by the IP address information of the device 3A as the destination of the control information added to the control information. Identify. Control information is then transmitted from the control device 2001 to the device 3A based on the specified MAC address of the device 3A (step S20). On the other hand, upon acquiring the control information, the device 3A starts operating based on the acquired control information (step S21).
  • step S101 the same processes as in the first embodiment are denoted by the same reference numerals as in FIG. 13.
  • the event occurrence detection unit 2118 determines that an address update event has occurred in step S101 (step S101: Yes)
  • the event occurrence detection unit 2118 generates event occurrence notification information and sends it to the cloud server 2002. (Step S2101).
  • Step S2101 it is assumed that a series of processes from steps S102 to S104 are executed, and the MAC address acquisition unit 2115 determines that ARP reply information has been acquired (step S104: Yes).
  • the MAC address acquisition unit 2115 updates the ARP table information by extracting the MAC address information included in the acquired ARP reply information and adding the extracted MAC address information to the ARP table information (step S105).
  • the address notification unit 2119 generates address notification information including the extracted MAC address information and the IP address information included in the ARP request information sent to obtain the MAC address information, and sends the generated address notification information to the cloud server 2002. (Step S2102).
  • the MAC address acquisition unit 2115 determines whether the above-mentioned acquisition stop command information transmitted from the cloud server 2002 has been acquired (step S2103).
  • step S2103 determines that the acquisition stop command information has not been acquired yet (step S2103: No)
  • the processes after step S103 are executed.
  • the device message acquisition unit 2111 determines whether or not the device message has been acquired (step S108).
  • the device message acquisition unit 2111 determines that the device message has not been acquired (step S108: No)
  • the process of step S101 is executed again.
  • the message type determination unit 2112 determines whether the device message is device status information (step S109).
  • the encapsulation unit 2120 encapsulates the device status information by adding header information for specifying the cloud server 2002 as the transmission destination, and the device message transmission unit 2116 encapsulates the encapsulated device status information. is sent to the cloud server 2002 (step S2104). Subsequently, the process of step S101 is executed again.
  • step S109: No determines whether the device message is control information.
  • step S2105 determines whether the device message is control information.
  • step S2105: No determines whether the device message is control information.
  • the decapsulation unit 2117 removes the header information from the encapsulated control information and then decapsulates the control information and the control information added to the control information. Extract address information.
  • the MAC address specifying unit 114 refers to the ARP table information stored in the ARP table storage unit 131 and specifies the MAC address corresponding to the IP address indicated by the IP address information of the device 3 to which the control information is transmitted. Then, the device message transmission unit 2116 transmits the control information to the device 3 based on the MAC address of the device 3 to which the specified control information is to be transmitted (step S2106). After that, the process of step S101 is executed again.
  • step S2201 determines whether the above-mentioned event occurrence notification information transmitted from the control device 2001 has been acquired.
  • the update status determination unit 2219 determines that event occurrence notification information has not been acquired (step S2201: No)
  • step S2205 which will be described later, is executed.
  • step S2201: Yes assume that the update status determination unit 2219 determines that event occurrence notification information has been acquired.
  • the address acquisition unit 2218 acquires the MAC address information of the device 3 included in the acquired address notification information and the MAC address information.
  • the IP address information included in the ARP request information sent for the purpose is extracted.
  • the device information update unit 2217 updates the IP address information associated with the extracted MAC address information among the IP address information stored in the device information storage unit 2232 to the extracted IP address information (step S2203).
  • the update status determination unit 2219 refers to the MAC address information stored in the device information storage unit 2232 and determines the updated IP address information of the device 3 connected to the local network NW21 to which the control device 2001 is connected. It is determined whether all the information has been acquired (step S2204). Here, if the update status determination unit 2219 determines that there is a device 3 that has not yet acquired updated IP address information (step S2204: No), the process of step S2202 is executed again.
  • the encapsulated message acquisition unit 2215 acquires the encapsulated device status information. It is determined whether or not (step S2205). Here, if the encapsulated message acquisition unit 2215 determines that the encapsulated device status information has not been acquired (step S2205: No), the process of step S2207, which will be described later, is executed. On the other hand, if the encapsulated message acquisition unit 2215 determines that the encapsulated device status information has been acquired (step S2205: Yes), the non-encapsulation unit 2216 extracts the parameter information included in the encapsulated device status information. The model information and identification number information of the device 3 are extracted, and the extracted parameter information, model information and identification number information of the device 3 are correlated with each other and stored in the device status storage unit 2233 (step S2206).
  • the device control unit 2213 refers to the device status information stored in the device status storage unit 2233 and determines whether it is necessary to update the control details of the device 3 (step S2207).
  • the process of step S2201 is executed again.
  • the device control unit 2213 determines that it is necessary to update the control content of the device 3 (step S2207: Yes)
  • the device control unit 2213 generates control information for updating the control content of the device 3 based on the device status information. (Step S2208).
  • the device control unit 2213 adds header information indicating the IP address of the destination device 3 to the generated control information. Thereafter, the encapsulation unit 2211 adds header information for specifying the control device 2001 as the destination to the control information to which the IP address information of the control information destination is added, and encapsulates the control information. Then, the encapsulated message transmitting unit 2212 transmits the encapsulated control information to the control device 2001 (step S2209). Next, the process of step S2201 is executed again.
  • the cloud server 2002 includes the device information storage section 2232, the device status storage section 2233, and the device control section 2213, thereby providing a functional configuration of the control device 2001. can be simplified. Therefore, the processing load on the control device 2001 can be reduced.
  • the control device 3001 shown in FIG. 15 may include an IP address acquisition unit 3121.
  • the same components as in Embodiment 1 are given the same reference numerals as in FIG. 3.
  • the device 3 when the device 3 acquires the IP address request information requesting transmission of the IP address information of the device 3 from the control device 3001, the device 3 includes the IP address information indicating the IP address assigned to the device itself. It generates IP address response information and sends it to the control device 3001.
  • the IP address acquisition unit 3121 broadcasts or multicasts IP address request information requesting the device 3 belonging to the network to transmit the IP address information of the device 3.
  • This is a dynamic address acquisition unit that acquires IP address information from all devices 3.
  • the IP address request information is, for example, dynamic address request information that requests transmission of the IP address of the device 3 in the application layer.
  • the IP address acquisition unit 3121 is notified of the event occurrence notification information from the event occurrence detection unit 3118, it generates the above-mentioned IP address request information and notifies the device message transmission unit 3116 of the generated IP address request information.
  • the IP address acquisition unit 3121 extracts the updated IP address information assigned to the device 3 included in the acquired IP address response information. The IP address information is notified to the MAC address acquisition unit 3115.
  • the device message transmission section 3116 When the device message transmission section 3116 is notified of the IP address request information from the IP address acquisition section 3121, the device message transmission section 3116 broadcasts the notified IP address request information to all the devices 3 connected to the network to which the control device 3001 is connected. do.
  • the message type determination unit 3112 determines that the device message acquisition unit 111 has acquired the IP address response information, the message type determination unit 3112 notifies the IP address acquisition unit 3121 of the acquired IP address response information.
  • the MAC address acquisition unit 3115 When the MAC address acquisition unit 3115 is notified of the IP address information from the IP address acquisition unit 3121, the MAC address acquisition unit 3115 identifies the IP address indicated by the notified IP address information as the IP address assigned to any of the devices 3. Then, the MAC address acquisition unit 3115 repeatedly transmits ARP request information that includes IP address information indicating one of the specified IP addresses and requests transmission of the MAC address information of the device 3. , sequentially acquires the MAC address information of all the devices 3 belonging to the network.
  • the device control process executed by the control device 3001 according to this modification will be described with reference to FIG. 16.
  • the same processes as in Embodiment 1 are given the same reference numerals as in FIG. First, it is assumed that the event occurrence detection unit 3118 determines whether or not the aforementioned address update event has occurred (step S101), and has determined that the address update event has occurred (step S101: Yes).
  • the IP address acquisition unit 3121 transmits the above-mentioned IP address request information to the devices 3 belonging to the network (step S3101), so that all the devices 3 belonging to the network receive the IP address. Get response information.
  • the IP address acquisition unit 3121 extracts the updated IP address information given to the device 3 included in the acquired IP address response information, and the MAC address acquisition unit 3115 extracts the IP address indicated by the extracted IP address information. is specified as the IP address given to any of the devices 3 (step S3102).
  • the MAC address acquisition unit 3115 selects one piece of IP address information from among the specified IP addresses (step S3103). Subsequently, a series of processes starting from step S103 are executed.
  • the IP address search range can be limited, the time required to update the IP address information stored in the device information storage section 132 can be shortened accordingly.
  • the device 3 monitors whether or not the IP address assigned to the device 3 has been changed, and when the IP address assigned to the device 3 has been changed, the device 3 monitors whether the IP address assigned to the device 3 has been changed.
  • Address change notification information to be notified may be generated and sent to the control device 1 or 2001 as the destination.
  • the event occurrence detection unit 118 or 2118 obtains the address change notification information from the device 3, it may be determined that the above-mentioned address update event has occurred. Further, in each embodiment, when the event occurrence detection unit 118, 2118 determines that the IP address assigned to the control device 1, 2001 has been changed, it determines that an address update event has occurred. Good too.
  • the MAC address acquisition units 115 and 2115 preferentially acquire MAC address information of a device 3 to which an IP address whose host address is close to the IP address assigned to the control device 1 is assigned. did.
  • the present invention is not limited to this, and the MAC address acquisition units 115 and 2115 fix the network address for the IP address that can be assigned to the device 3 and increment the network address by 1 starting from the smallest host address, or increment the number by 1 starting from the largest host address.
  • the MAC address information of the device 3 may be acquired by decrementing the information one by one. For example, assume that the IP address is an IPv4 address and the network address is set to "192.168.1.0".
  • the MAC address acquisition units 115 and 2115 sequentially broadcast the ARP request information while incrementing the host address included in the IP address indicated by the IP address information included in the ARP request information by 1 from "1". Good too.
  • the MAC address acquisition units 115 and 2115 may sequentially broadcast the ARP request information while decrementing the host address included in the IP address indicated by the IP address information included in the ARP request information by 1 from "255". good.
  • the MAC address acquisition units 115 and 2115 acquire MAC address information for IP addresses that can be assigned to the device 3, including one common network address.
  • the present invention is not limited to this, and for example, MAC address information may be acquired for an IP address that includes any one of a plurality of network addresses.
  • the MAC address acquisition units 115 and 2115 acquire IP address information indicating the IP address by executing a process of transmitting a so-called dummy device message with the IP address to be searched as the destination.
  • the included ARP request information may be broadcasted to the device 3.
  • the IP address has been described as an IPv4 IP address, but the present invention is not limited to this, and an IPv6 IP address may be adopted.
  • various functions of the control device 1, 2001, 3001, and cloud server 2002 may be realized by software, firmware, or a combination of software and firmware.
  • the software or firmware is written as a program, and the program is stored on a computer-readable disk such as a flexible disk, CD-ROM (Compact Disc Read Only Memory), DVD (Digital Versatile Disc), MO (Magneto-Optical Disc), etc.
  • a computer-readable disk such as a flexible disk, CD-ROM (Compact Disc Read Only Memory), DVD (Digital Versatile Disc), MO (Magneto-Optical Disc), etc.
  • each program may be posted on a bulletin board system (BBS) on a communication network and distributed via the network.
  • BSS bulletin board system
  • the above-described processes may be executed by starting these programs and executing them under the control of the OS in the same way as other application programs.
  • the present disclosure is suitable as a control system including a HEMS installed in a residence.

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PCT/JP2022/033920 2022-09-09 2022-09-09 制御装置、制御システム、制御方法およびプログラム Ceased WO2024053098A1 (ja)

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JP2005236943A (ja) * 2004-06-01 2005-09-02 Matsushita Electric Ind Co Ltd Ｔｃｐ／ｉｐネットワークパラメータ設定方法
WO2022074727A1 (ja) * 2020-10-06 2022-04-14 三菱電機株式会社 制御システム、サーバ、制御装置、通信制御方法およびプログラム

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005236943A (ja) * 2004-06-01 2005-09-02 Matsushita Electric Ind Co Ltd Ｔｃｐ／ｉｐネットワークパラメータ設定方法
WO2022074727A1 (ja) * 2020-10-06 2022-04-14 三菱電機株式会社 制御システム、サーバ、制御装置、通信制御方法およびプログラム

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