WO2014175439A1 - Appareil de communication, procédé de gestion d'adresses, programme, et système de communication - Google Patents

Appareil de communication, procédé de gestion d'adresses, programme, et système de communication Download PDF

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Publication number
WO2014175439A1
WO2014175439A1 PCT/JP2014/061741 JP2014061741W WO2014175439A1 WO 2014175439 A1 WO2014175439 A1 WO 2014175439A1 JP 2014061741 W JP2014061741 W JP 2014061741W WO 2014175439 A1 WO2014175439 A1 WO 2014175439A1
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WO
WIPO (PCT)
Prior art keywords
identification information
communication
address
communication adapter
type
Prior art date
Application number
PCT/JP2014/061741
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English (en)
Japanese (ja)
Inventor
香 佐藤
裕信 矢野
矢部　正明
雄喜 小川
一郎 丸山
中村　慎二
史郎 鈴木
正之 小松
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三菱電機株式会社
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Publication of WO2014175439A1 publication Critical patent/WO2014175439A1/fr

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    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
    • G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/2803—Home automation networks
    • H04L12/2807—Exchanging configuration information on appliance services in a home automation network
    • H04L12/2809—Exchanging configuration information on appliance services in a home automation network indicating that an appliance service is present in a home automation network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/2803—Home automation networks
    • H04L12/283—Processing of data at an internetworking point of a home automation network
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C2201/00—Transmission systems of control signals via wireless link
    • G08C2201/40—Remote control systems using repeaters, converters, gateways
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C2201/00—Transmission systems of control signals via wireless link
    • G08C2201/40—Remote control systems using repeaters, converters, gateways
    • G08C2201/42—Transmitting or receiving remote control signals via a network

Definitions

  • the present invention relates to a communication device, an address management method, a program, and a communication system.
  • a system is known in which devices such as controllers and mobile terminals are connected to home devices via a communication network so that data communication is possible, and devices are operated from devices such as controllers and the status of devices is acquired (for example, Patent Document 1).
  • each device is assigned an IP address.
  • a device such as a controller holds a table in which IP addresses are associated with device identification information corresponding to the IP addresses.
  • a device such as a controller can refer to this table to acquire the IP address of a device desired to communicate and communicate with the device.
  • the controller cannot acquire the changed IP address and cannot communicate with the device.
  • a mechanism in which a device broadcasts its changed IP address. Upon receiving this notification, a device such as a controller transmits a request for acquiring device identification information to the notified IP address, and newly registers the identification information returned from the device in association with the IP address in the table. To do. Accordingly, even when the IP address of the device is changed, a device such as a controller can communicate with the device.
  • the device since the device notifies the change of the IP address by broadcast, depending on the communication environment, a device such as a controller may not be able to reliably receive the notification.
  • the present invention has been made in view of the above circumstances, and provides a communication device, an address management method, a program, and a communication system capable of reliably performing communication even when the IP address of a device is changed. Objective.
  • the communication device of the present invention provides: A communication device that communicates with each communication adapter connected to each of a plurality of devices via a communication network, For each communication adapter, an IP address assigned to the communication adapter, identification information of the communication adapter, and information indicating the type of the device connected to the communication adapter are stored in association with each other. Storage means; When the communication with the communication adapter is attempted by designating the IP address stored in the device correspondence storage means, and the change of the IP address assigned to the communication adapter is detected, the device correspondence storage means is referred to.
  • a type discriminating means for discriminating the type of equipment connected to the communication adapter; Identification information requesting means for transmitting an identification information acquisition request for a communication adapter connected to the type of device determined by the type determining means to each of the communication adapters; Identification information identifying means for identifying one of the identification information returned from the communication adapter in response to the transmitted acquisition request that matches the identification information of the communication adapter in which the change of the IP address is detected; In the device correspondence storage unit, a device correspondence update unit that updates the IP address stored in association with the identification information identified by the identification information identification unit to the IP address of the communication adapter that returned the identification information; Is provided.
  • the identification information acquisition request for the same type of device as the device whose IP address has been changed is transmitted, the number of responses to the request can be reduced. Therefore, even if the IP address is changed, communication can be performed reliably.
  • FIG. 1 is a diagram showing an overall configuration of a device control system 1 (communication system) according to an embodiment of the present invention.
  • the device control system 1 is a system for monitoring the state of each device 4 (4A, 4B, 4C,%) In the residence 7 and controlling the operation.
  • the device control system 1 includes a controller 2, a communication adapter 3 (3A, 3B, 3C,%), And a device 4 (4A, 4B, 4C,).
  • the controller 2 and each communication adapter 3 are connected to each other so as to be able to perform data communication with each other via a home network 5 compliant with ECHONET Lite.
  • the communication adapters 3A, 3B, 3C,... And the corresponding devices 4A, 4B, 4C,... Communicate with each other via a communication line 6 (6A, 6B, 6C,. Connected as possible.
  • the controller 2 communicates with the device 4 via the home network 5 and the communication adapter 3 to perform remote control of the device 4 and acquisition of the state.
  • the controller 2 includes a network communication unit 21, a display unit 22, an input unit 23, a storage unit 24, and a control unit 25.
  • the network communication unit 21 includes, for example, an interface for wireless communication, and performs data communication with the communication adapter 3 via the home network 5 under the control of the control unit 25.
  • the display unit 22 includes a liquid crystal panel and the like, and displays various screens for managing the device 4 under the control of the control unit 25.
  • the input unit 23 is, for example, a touch panel, and performs a process of receiving an operation input from the user.
  • a touch panel is adopted as the input unit 23
  • a transparent flat plate-like capacitance sensor that detects a change in capacitance is mounted on the liquid crystal display.
  • the position information is controlled. Is output to the unit 25.
  • the control unit 25 determines the operation content of the user based on the position information.
  • a signal corresponding to the operation content is output to the control unit 25.
  • the storage unit 24 plays a role as a so-called secondary storage device (auxiliary storage device), and includes, for example, a readable / writable nonvolatile semiconductor memory or the like such as a flash memory.
  • the storage unit 24 stores a list of devices 4 to be managed, a list of operation contents of the devices 4, screen data for managing the devices 4, programs executed by the control unit 25, and the like.
  • the storage unit 24 includes a device correspondence table 241 and a device state table 242.
  • the device correspondence table 241 is a table that defines a correspondence relationship between the communication adapter 3 and the device 4 connected to the communication adapter 3.
  • the controller 2 can communicate with a desired device 4 via the communication adapter 3.
  • the device correspondence table 241 as shown in FIG. 3, the IP address assigned to the communication adapter 3, the MAC address (MediaMACAccess Control address) which is identification information of the communication adapter 3, and The type of the device 4 connected to the communication adapter 3 is stored in association with it.
  • the device state table 242 is a table in which the operation state of each device 4 is stored. Information in the device status table 242 is periodically updated to the latest information.
  • control unit 25 includes a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), etc. (none of which are shown), and the CPU uses the RAM as a work memory.
  • the controller 2 as a whole is controlled by appropriately executing various programs stored in the ROM and the storage unit 24.
  • the control unit 25 communicates with each communication adapter 3 via the home network 5 every predetermined communication time (for example, every 30 seconds), and acquires the state of the device 4 connected to the communication adapter 3. Then, the contents of the device status table 242 are updated. At this time, if a communication error occurs and the state of the device 4 cannot be acquired, the control unit 25 acquires an identification information acquisition request (MAC address) for the communication adapter 3 connected to the same type of device 4 as the device 4. (Acquisition request) is transmitted to each communication adapter 3 by broadcast.
  • MAC address identification information acquisition request
  • the communication error indicates that communication with the device 4 that has attempted communication is impossible due to the change of the IP address.
  • the control unit 25 When the identification information (MAC address) returned from the target communication adapter 3 in response to the MAC address acquisition request matches the identification information (MAC address) of the device 4 that has caused the communication error, the control unit 25 The correspondence relationship between the IP address and the identification information in the communication adapter 3 registered in the device correspondence table 241 is updated. Details of these processes performed by the control unit 25 will be described later.
  • the communication adapter 3 is a device for connecting the device 4 connected via the communication line 6 to the home network 5.
  • the communication adapter 3 includes a network communication unit 31, a device communication unit 32, a storage unit 33, and a control unit 34.
  • the network communication unit 31 includes a communication interface for connecting to the home network 5, and performs data communication with the controller 2 via the home network 5 under the control of the control unit 34.
  • the device communication unit 32 includes a connector or the like for connecting to the communication line 6, and performs data communication with the device 4 through the communication line 6 under the control of the control unit 34.
  • the storage unit 33 is configured by, for example, a readable / writable nonvolatile semiconductor memory such as a flash memory, and stores programs executed by the control unit 34 and various fixed data. In addition, the storage unit 33 stores device type information 331 and device state information 332.
  • the device type information 331 is information indicating the type of the connected device 4 and indicates “refrigerator”, “TV”, “sensor”, and the like.
  • the device type information 331 is acquired from the device 4 and stored in the storage unit 33 when the communication adapter 3 is connected to the device 4 for the first time, for example.
  • the device state information 332 is information indicating the operating state of the connected device 4.
  • the device state information 332 is information indicating a set temperature, an operation mode, an air volume, and the like.
  • the control unit 34 includes a CPU, a ROM, a RAM, and the like (all not shown), and the CPU uses the RAM as a work memory and appropriately executes various programs stored in the ROM and the storage unit 33.
  • the entire communication adapter 3 is controlled.
  • the control unit 34 requests the connected device 4 to acquire the state every predetermined time (for example, every second), acquires the device state information 332, and stores it in the storage unit 33. Further, as described above, the control unit 34 transmits the device state information 332 to the controller 2 in response to a request from the controller 2 every communication time (for example, every 30 seconds). Further, when the control unit 34 receives a MAC address acquisition request from the controller 2, if the control unit 34 is a target of the request, the control unit 34 transmits (replies) its own MAC address to the controller 2.
  • the device 4 is an air conditioner, a lighting device, a rice cooker, an IH cooker, a dehumidifier, a TV, etc. used in the house 7.
  • the controller 2 of the device control system 1 configured as described above will be described with reference to the flowchart of FIG.
  • the controller 2 When the power is turned on, the controller 2 periodically executes device state acquisition processing for acquiring device state information 332 from the communication adapter 3.
  • control unit 25 determines whether or not a communication time (for example, 30 seconds) has elapsed (step S101). When the communication time has not elapsed (step S101; No), the control unit 25 waits for processing.
  • a communication time for example, 30 seconds
  • step S101 When the communication time has elapsed (step S101; Yes), the control unit 25 selects one IP address of the communication adapter 3 registered in the device correspondence table 241 (step S102). Then, the control unit 25 controls the network communication unit 21 to transmit a device status acquisition request (status acquisition request) to the selected IP address via the home network 5 (step S103).
  • a device status acquisition request status acquisition request
  • the controller 34 When the control unit 34 of the communication adapter 3 to which the IP address of the transmission destination of the status acquisition request is assigned receives the status acquisition request, the controller 34 sends a response (status acquisition response) including the device status information 332 and its own MAC address. Reply to 2.
  • the home network 5 responds to the status acquisition request from the controller 2. Returns an error code.
  • control unit 25 of the controller 2 receives the reply (response) to the status acquisition request transmitted in step S103 (step S104), it determines whether or not a communication error (IP address change) has occurred (step S105). . Specifically, the controller 2 determines an error when an error code is returned. Alternatively, the controller 2 matches the MAC address of the transmission source included in the status acquisition response received from the communication adapter 3 with the MAC address associated with the transmission destination IP address of the status acquisition request transmitted in step S103. If not, it is determined as a communication error.
  • IP address change IP address change
  • step S105 When it is determined that no communication error has occurred (step S105; No), the control unit 25 updates the contents of the device state table 242 using the device state information 332 included in the received state acquisition response (step S105). S106), the process proceeds to step S112.
  • control unit 25 identifies the type of device that could not communicate due to this communication error (step S107). Specifically, the control unit 25 may identify the type of the device 4 associated with the IP address selected in step S102 with reference to the device correspondence table 241.
  • control unit 25 broadcasts a MAC address acquisition request for requesting acquisition of a MAC address from the type of device 4 specified in step S107 to each communication adapter 3 (step S108).
  • the control unit 34 of each communication adapter 3 that has received the MAC address acquisition request refers to the device type information 331 and determines whether or not it is the target of this request. If it is determined that the request is not made, the control unit 34 does not respond to this request. On the other hand, when determining that it is a request target, the control unit 34 returns its own MAC address and IP address to the controller 2.
  • control unit 25 of the controller 2 When the control unit 25 of the controller 2 receives the MAC address from each communication adapter 3 (step S109), the control unit 25 of the received MAC addresses matches the MAC address of the communication adapter 3 determined as a communication error in step S105. Specify (step S110).
  • control unit 25 updates the IP address associated with the MAC address specified in step S110 in the device correspondence table 241 to the IP address of the communication adapter 3 that is the transmission source of the MAC address (step S111). The process moves to step S112.
  • step S112 the control unit 25 determines whether or not all IP addresses assigned to the communication adapters 3 registered in the device correspondence table 241 have been selected (step S112).
  • step S112 the process returns to step S102, and the control unit 25 selects an unselected IP address and requests acquisition of the status of the device 4, and there is no communication error.
  • the device status table 242 is updated, and when a communication error occurs, a series of processes for updating the device correspondence table 241 is repeated (steps S102 to S111).
  • step S112 Yes
  • the process returns to step S101.
  • step T1 the above-described device status acquisition process
  • step T2 the control unit 25 of the controller 2 transmits a status acquisition request addressed to the IP address “192.168.32.100”
  • step T3 the control unit 34 of the communication adapter 3A to which the IP address is assigned A status acquisition response including its own MAC address “04-A3-43-5F-43-23” is transmitted (step T3).
  • the control unit 25 of the controller 2 determines that the communication is successful (no communication error) (step T4).
  • a status acquisition request is transmitted to the communication adapters 3B and 3C and a response is returned, and it is determined that the communication is successful.
  • step T5 consider the case where the device status acquisition process (step T5) is started again after this IP address change.
  • the control unit 25 of the controller 2 tries to acquire the status to the communication adapter 3A with the IP address “192.168.32.100” as the destination, but since the IP address has been changed, the status acquisition request is sent to the communication adapter 3B. It is transmitted (step T6).
  • the control unit 34 of the communication adapter 3B that has received the status acquisition request transmits a status acquisition response including its own MAC address “04-A3-43-5F-43-24” to the controller 2 (step T7). .
  • the destination IP address “192.168.32.100” of the status acquisition request and the MAC address “04-A3-43-5F-43-24” included in the status acquisition response corresponding thereto are shown in FIG. It is not registered in association with the device correspondence table 241. Accordingly, the control unit 25 of the controller 2 determines that a communication error has occurred because it cannot communicate with the communication adapter 3A (step T8).
  • the controller The second control unit 25 broadcasts a MAC address acquisition request for the type “air conditioner” to each of the communication adapters 3A to 3C (step T9, step T10, step T11).
  • the communication adapter 3A Since the type of the device 4A connected to the communication adapter 3A is “air conditioner”, the communication adapter 3A is a target of the MAC address acquisition request received by broadcast. Therefore, the control unit 34 of the communication adapter 3A transmits its own MAC address “04-A3-43-5F-43-23” to the controller 2 (step T12). The transmitted MAC address matches the MAC address of the communication adapter 3A determined as a communication error in step T8 (step T13). Therefore, the controller 25 of the controller 2 uses the IP address “192.168.32.100” associated with the MAC address “04-A3-43-5F-43-23” of the communication adapter 3A in the device correspondence table 241 shown in FIG.
  • the IP address of the device correspondence table 241 is similarly updated when a status acquisition request is transmitted to the communication adapter 3B.
  • the control unit 34 of the communication adapter 3B transmits its own MAC address “04-A3-43-5F-43-24” to the controller 2 (step T15). However, since the transmitted MAC address of the communication adapter 3B is different from the MAC address of the communication adapter 3A determined as a communication error in step T8 (step T16), the IP address is not updated here.
  • the control unit 34 of the communication adapter 3C does not respond to the controller 2 in response to the MAC address acquisition request (step T17).
  • the controller 2 when detecting a communication error (IP address change), the controller 2 is connected to a device 4 of the same type as the device 4 that cannot be connected due to the change of the IP address.
  • An acquisition request for identification information (MAC address) targeting the communication adapter 3 is broadcast to each communication adapter 3.
  • the controller 2 updates the device correspondence table 241 based on the response result to eliminate the communication error. Accordingly, since a response is received only from the communication adapter 3 connected to the same type of device 4 as the device 4 that cannot be connected, the number of responses can be reduced, and a communication error can be reliably performed without imposing a load on the system. Can be eliminated.
  • the MAC address is adopted as the identification information of the communication adapter 3, but other identification information such as a serial number can also be adopted.
  • the device control system 1 may be configured without using the communication adapter 3, as shown in FIG.
  • the controller 2 can designate an IP address assigned to the device 4 and directly communicate with the device 4 via the home network 5.
  • the IP address and the MAC address stored in the device correspondence table 241 indicate the device 4.
  • the home network 5 has been described as compliant with ECHONET Lite.
  • the present invention can be applied to a home network 5 compliant with other protocols.
  • the controller 2 transmits a status acquisition request to each communication adapter 3 by broadcast.
  • the controller 2 may transmit a status acquisition request to each communication adapter 3 without using broadcast.
  • the controller 2 may transmit a status acquisition request to each communication adapter 3 in order.
  • the personal computer or the like may function as the controller 2 according to the present invention. Is possible.
  • Such a program distribution method is arbitrary.
  • a CD-ROM Compact Disk Read-Only Memory
  • DVD Digital Versatile Disk
  • MO Magnetic Optical Disk
  • a memory card etc.
  • a computer It may be distributed by storing in a recording medium, or distributed via a communication network such as the Internet.

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  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computing Systems (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Small-Scale Networks (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Selective Calling Equipment (AREA)

Abstract

Un contrôleur (2) désigne, par l'intermédiaire d'un réseau domotique (5), une adresse IP, pour essayer d'établir une communication avec un adaptateur de communication (3). Lorsqu'il a détecté un changement de l'adresse IP, le contrôleur (2) détermine le type d'un dispositif (4) connecté à l'adaptateur de communication (3) et transmet une requête pour acquérir des informations d'identification, qui sont destinées à un adaptateur de communication (3) qui est du même type, aux adaptateurs de communication (3). Le contrôleur (2) met ensuite à jour une table de correspondance de dispositifs sur la base des informations d'identification retournées à partir des adaptateurs de communication (3).
PCT/JP2014/061741 2013-04-26 2014-04-25 Appareil de communication, procédé de gestion d'adresses, programme, et système de communication WO2014175439A1 (fr)

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JP2013094664A JP5474233B1 (ja) 2013-04-26 2013-04-26 通信装置、アドレス管理方法、プログラム及び通信システム
JP2013-094664 2013-04-26
JP2014019819A JP5669967B2 (ja) 2013-04-26 2014-02-04 通信装置、アドレス管理方法、プログラム及び通信システム

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Cited By (2)

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JP2016095710A (ja) * 2014-11-14 2016-05-26 ダイキン工業株式会社 照合システム
JPWO2022123717A1 (fr) * 2020-12-10 2022-06-16

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JP5474233B1 (ja) * 2013-04-26 2014-04-16 三菱電機株式会社 通信装置、アドレス管理方法、プログラム及び通信システム
JP6314696B2 (ja) * 2014-06-30 2018-04-25 株式会社バッファロー ネットワークシステム、ネットワークシステムにおけるアドレスの通知方法、情報処理装置、および、装置
CN106130859A (zh) * 2016-06-23 2016-11-16 北京东土科技股份有限公司 一种工业互联网现场层宽带总线配置管理实现方法

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JP2004214850A (ja) * 2002-12-27 2004-07-29 Hitachi Ltd ゲートウェイ
JP2009538067A (ja) * 2006-05-29 2009-10-29 チャイナ モバイル コミュニケーションズ コーポレーション ホームネットワークにおけるインテリジェント情報家電及びそのサブ設備に対するアドレス割当方法
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Publication number Priority date Publication date Assignee Title
JP2016095710A (ja) * 2014-11-14 2016-05-26 ダイキン工業株式会社 照合システム
JPWO2022123717A1 (fr) * 2020-12-10 2022-06-16
WO2022123717A1 (fr) * 2020-12-10 2022-06-16 三菱電機株式会社 Système de gestion de dispositif
JP7407972B2 (ja) 2020-12-10 2024-01-04 三菱電機株式会社 機器管理システム

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