WO2014162331A1 - Pont, système de réseau, unité extérieure de climatisation, et système de réseau de climatisation - Google Patents

Pont, système de réseau, unité extérieure de climatisation, et système de réseau de climatisation Download PDF

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Publication number
WO2014162331A1
WO2014162331A1 PCT/JP2013/002224 JP2013002224W WO2014162331A1 WO 2014162331 A1 WO2014162331 A1 WO 2014162331A1 JP 2013002224 W JP2013002224 W JP 2013002224W WO 2014162331 A1 WO2014162331 A1 WO 2014162331A1
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WO
WIPO (PCT)
Prior art keywords
bridge
master station
database
frame
air
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Application number
PCT/JP2013/002224
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English (en)
Japanese (ja)
Inventor
裕太 飯塚
北市　隆一
克佳 高橋
和樹 濱田
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三菱電機株式会社
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Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to PCT/JP2013/002224 priority Critical patent/WO2014162331A1/fr
Publication of WO2014162331A1 publication Critical patent/WO2014162331A1/fr

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    • 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]
    • H04L12/40—Bus networks
    • H04L12/40006—Architecture of a communication node

Definitions

  • This invention relates to a network system in which a bridge exists between a master station and a slave station.
  • a bus is divided by installing a bridge between the master station and the slave station.
  • the bridge determines an output destination port to be relayed based on data link layer information, and performs relaying.
  • a bridge it is possible to transmit a frame only to a network in which a device that needs to receive the frame is present among the divided bus shared networks.
  • the bridge when the bridge relays the frame, it learns the transmission source address and reception port of the frame. Thereafter, when a frame is received, it relays to the corresponding port based on the previously learned content. If it is a relay frame to an unlearned port, the bridge relays to all ports (flooding).
  • flooding has a problem that the consumption of the communication band is large, and there are the following methods for reducing the consumption of the communication band by suppressing the flooding.
  • correspondence information storage means that stores correspondence information between nodes and ports
  • flooding suppression port storage means that stores information that can identify ports that suppress flooding of frames
  • information stored in the flooding suppression port storage means Based on the above, there is disclosed a relay device having relay means for limiting a port to which a frame whose destination is a node not stored in the correspondence information storage means is flooded (see Patent Document 1).
  • the learning table A transmission device determines a port to which the received packet is transmitted using the transferred learning content (see Patent Document 2).
  • the source address or port of the frame is learned in the bridge, and the relay and flooding of the frame is performed based on the learned information.
  • the flooding increases. Increased communication bandwidth consumption.
  • no learning is performed at the time of system startup, the above phenomenon often occurs.
  • the present invention has been made in view of such a situation, and an object of the present invention is to realize a configuration that suppresses flooding and communication bandwidth consumption even when a bridge does not learn a frame source address or port. To do.
  • the present invention relays between a master station and a slave station, performs snooping on a frame relayed at the time of initial setting, and is addressed to the master station or from the master station. Frames other than frames are discarded, and when relaying to the master station, a relay unit that transmits to all nodes connected to the master station side, a database for identifying an initial sequence, and a snooping frame And a sequence determination unit that determines completion of initial setting based on a database.
  • the bridge according to the present invention relays only with the master station until the bridge learns the transmission source address or port of the frame, it has the effect of suppressing flooding and communication bandwidth consumption.
  • FIG. 1 is a conceptual diagram of a network system in Embodiment 1.
  • FIG. 1 is a configuration diagram of a bridge 100 according to Embodiment 1.
  • FIG. 3 is a flowchart until the bridge 100 according to the first embodiment starts relaying other than a frame with the master station 101.
  • FIG. 6 is a configuration diagram of a bridge 100 according to the second embodiment.
  • FIG. 5 is a conceptual diagram of a network system in a third embodiment.
  • FIG. 10 is a flowchart until the bridge 100 according to the third embodiment starts relaying other than a frame with the master station 101.
  • FIG. 1 is a conceptual diagram of a network system according to the first embodiment.
  • This embodiment includes a bridge 100, a master station 101, and a slave station 102.
  • the bridge 100 is located between the master station 101 and the slave station 102.
  • Each of the master station 101, the slave station 102, and the bridge 100 may be composed of one or more.
  • the master station 101 manages and controls the slave station 102 via the bridge 100. Further, the master station 101 confirms the existence of all the slave stations 102 via the bridge 100 as an initialization sequence. For example, it is assumed that there is a slave station 102 that has confirmed the presence of all slave stations 102 in the network and has returned a response, and that there is no slave station 102 that has not responded.
  • the bridge 100 relays a transmission frame from the master station 101 to the slave station 102 and relays a response frame from the slave station 102 to the master station 101. Further, relaying between the slave stations 102 is also performed. A detailed configuration of the bridge 100 will be described later.
  • the slave station 102 transmits a response frame via the bridge 100 to the frame transmitted from the master station 101 during the initialization sequence.
  • the slave station 102 starts communication with the other master stations 101 and slave stations 102 after completing all initialization sequences.
  • Ethernet registered trademark
  • dedicated protocol a dedicated protocol
  • the address system of the dedicated protocol is not an IP address used for Ethernet (registered trademark), but assigns an address dedicated to the dedicated protocol.
  • FIG. 2 is a configuration diagram of the bridge 100 according to the first embodiment.
  • the bridge 100 in the present embodiment includes a relay unit 201, a sequence determination unit 202, and a database 203.
  • the relay unit 201 includes a frame discard processing unit 201a and a snooping processing unit 201b in addition to the functions provided in a general bridge device.
  • the database 203 and the sequence determination unit 202 are described separately, but may be combined into one for implementation.
  • the relay unit 201 relays frames of the slave station 102 and the slave station 102 between the master station 101 and the slave station 102 or via a plurality of bridges 100.
  • a port connected to the master station 101 of the relay unit 201 is a master station side port, and a port connected to the slave station 102 is a slave station side port.
  • the snooping processing unit 201b performs frame snooping when relaying inter-application communication (for example, an initial sequence).
  • the sequence determination unit 202 receives the frame snooped by the snooping processing unit 201b, analyzes it based on the database 203, and determines whether initialization is complete.
  • the database 203 holds an application initialization sequence.
  • the sequence is information for identifying an initialization sequence in which the master station 101 confirms the existence of all the slave stations 102. As an example, the number of connected slave stations 102, message type information, and a conditional expression for determining completion of initial setting are held.
  • the sequence determination unit 202 determines the number of responses of existence confirmation from the slave station 102 using the sequence stored in the database 203, for example, the number information of the slave stations 102 and the message type information (whether it is a response confirmation frame). When the number of frames that match the conditions matches the number of slave stations 102, the initial setting is completed.
  • the frame discard processing unit 201a prevents the bridge 100 from relaying frames other than the frame related to the master station 101 (the frame addressed to the master station or the frame whose transmission source is the master station) until the initial setting is completed. Therefore, the frame is discarded.
  • the reason why only the frame with the master station 101 is relayed is that the master station confirms the existence of all slave stations and the slave station 102 needs to return a response.
  • FIG. 3 is a flowchart until the bridge 100 according to the first embodiment starts relaying other than a frame with the master station 101.
  • the relay unit 201 of the bridge 100 checks the existence of the master station 101 or all the slave stations 102 in the network from the master station 101 at the start of communication.
  • the snooping processing unit 201b performs snooping on the received frame.
  • the sequence determination unit 202 of the bridge 100 performs analysis based on the database 203 held by itself using the snooping frame and determines completion of initial setting.
  • the database 203 holds the number information of the connected slave stations 102, message type information, and a conditional expression for determining completion of initial setting.
  • the sequence determination unit 202 determines the number of responses of presence confirmation from the slave station 102 using the number information of the slave stations 102 and the message type information (whether it is a response confirmation frame) stored in the database 203, and the condition When the number of frames that match the number of slave stations 102 matches, the initial setting is completed.
  • step S103 when the bridge 100 can search for all addresses in a network to which the slave station 102 is connected, such as a limited address range, the database 203
  • the sequence determination unit 202 confirms that there is no device having the address by referring to the database 203, or initializes the device having the address. It may be determined that the initial setting is completed when one of the confirmation of completion of the sequence has confirmed the range for all addresses.
  • the sequence determination unit 202 may apply the same processing as in the previous paragraph to the address range.
  • the relay unit 201 starts relaying all frames in S108.
  • the relay unit 201 determines whether or not the “transmission source is a master station” or “destination is a master station”. Determine.
  • the relay unit 201 relays the frame in S106, and the “transmission source is the master station 101” or “ If the “destination is not the master station 101”, the frame discard processing unit 201a discards other frames in S107. The above processing is performed every time a new frame is received until it is determined that the initial setting has been completed.
  • the bridge 100 When the master station 101 confirms the existence of all devices in the network, in S106, the bridge 100 directly connects to the bridge 100 itself when relaying the “presence confirmation response frame” from the slave station 102.
  • the slave station 102 learns the address at the slave station 102 side port of the bridge 100. Further, the bridge 100 transmits only the “existence confirmation response frame” from the slave station 102 to all the master stations 101 connected to the master station 100 or other bridges 100. Therefore, the “existence confirmation response frame” transmitted from the slave station 102 via the bridge 100 is also learned at the master station side port of another bridge 100.
  • each slave station 102 always transmits an existence confirmation response frame in the initialization sequence, so that information on all slave stations 102 is learned by the relay unit 201 of each bridge 101 at the time of completion of the initialization sequence.
  • the Accordingly, flooding after the completion of the initialization sequence does not occur except for reasons such as deletion, device failure, and device addition due to aging of learned information.
  • the bridge 100 relays between the master station 101 and the slave station 102, performs snooping on the frame relayed at the time of initial setting, and discards frames other than the frame addressed to or from the master station 101.
  • a relay unit that transmits to all stations connected to the master station 100 or other bridge 100 (all nodes), a database 203 for identifying an initial sequence, and snooping
  • the sequence determination unit 202 that determines completion of initial setting based on the frame and the database 203 is suppressed, so that flooding that occurs in a situation where learning is insufficient at the time of initialization is suppressed, and bandwidth consumption is reduced. It becomes possible to do.
  • the present invention is particularly effective in narrowband communication.
  • bandwidth consumption due to flooding temporarily increases and congestion is caused when there are very many devices in the network. It is effective in terms of deterrence.
  • the master station 101 side port and slave station 102 side port of the bridge 100 may be manually set by the user, or the port that first receives the “existence confirmation frame” may be automatically set to the master station 101. Alternatively, other methods may be used.
  • Embodiment 2 a configuration in which all the configurations and operations of the first embodiment are provided and the database 203 of the bridge 100 is changed will be described.
  • FIG. 4 is a configuration diagram of the bridge 100 according to the second embodiment.
  • the bridge 100 that realizes the present embodiment has a function of exchanging information registered in the database 203 in the bridge 100 with information provided from the external server 103.
  • the external server 103 does not necessarily need to be an independent dedicated device, and may be configured such that devices such as the master station 101 and the slave station 102 have functions equivalent to the external server 103.
  • the internal data registered in the database 203 is information related to the initialization sequence.
  • the internal data registered in the database 203 can be registered even with sequence information other than the initialization sequence.
  • update information on information related to the initialization sequence may be used. For example, when there is a change in the number of connection devices in the network and the external server database 104 of the external server 103 holds the changed number information, the bridge 100 can exchange the number information registered in the database 203.
  • the bridge 100 relays between the master station 101 and the slave station 102, performs snooping on the frames relayed at the initial setting, and frames other than the frames addressed to the master station 101 or from the master station 102 In the case of discarding and relaying to the master station 101, all stations connected to the master station 100 or the relay unit transmitting to the other bridge 100, the database 203 for identifying the initial sequence, and snooping are performed. And a sequence determination unit 202 that determines completion of initial setting based on the frame 203 and the database 203, and the database 203 can be exchanged with external sequence information, so that the bridge 100 supports a plurality of sequences. Can be realized. As a result, when a new device is introduced into the network, it is only necessary to exchange the information registered in the database 203 without exchanging the bridge 100 itself, and the network system can be easily changed and the necessary cost can be reduced. It becomes possible to do.
  • FIG. 5 is a conceptual diagram of the network system in the third embodiment.
  • the configuration of the bridge 100 is the same as that of the first embodiment, but the operation of the sequence determination unit 202 and the data held in the database 203 are different.
  • the configuration of slave station 102 is the same as that of the first embodiment, and the configuration of master station 101 is different from that of the first embodiment.
  • the master station 101 includes an initial setting completion determination unit 204 that determines the number of slave stations 102 connected to the bridge 100 and determines completion of initial setting. The operation will be described.
  • FIG. 6 is a flowchart until the bridge 100 according to the third embodiment starts relaying other than a frame with the master station 101.
  • the relay unit 201 of the bridge 100 performs the master station 101 or slave station at the start of communication when confirming the existence from the master station 101 to all devices in the network.
  • the snooping processing unit 201b performs snooping on the received frame.
  • the sequence determination unit 202 of the bridge 100 performs analysis based on the database 203 held by itself using the snooping frame, and determines completion of initial setting.
  • the database 203 holds a conditional expression for determining message type information, that is, whether it is an initial setting completion notification frame.
  • the sequence determination unit 202 uses the message type information indicating the initial setting completion notification frame stored in the database 203, and when the initial setting completion determination unit 204 determines that the initial setting has been completed, the master station 101 communicates with the bridge 100. When the “initial setting completion notification frame” to be transmitted is received, the initial setting is completed.
  • the relay unit 201 starts relaying all frames in S208. If the sequence determination unit 202 determines in S205 that the initial setting has not been completed, the relay unit 201 determines in S205 whether or not the “transmission source is a master station” or “destination is a master station”. Determine. In S205, if the “source of the frame is the master station 101” or “the destination is the master station 101”, in S206, the relay unit 201 relays the frame, and the “source of the frame is the master station 101” or “ If the “destination is not the master station 101”, in step S207, the frame discard processing unit 201a discards the other frames. The above processing is performed every time a new frame is received until it is determined that the initial setting has been completed.
  • the bridge 100 When the master station 101 confirms the presence of all devices in the network, in S206, the bridge 100 directly connects to the bridge 100 itself when relaying the “presence confirmation response frame” from the slave station 102.
  • the slave station 102 learns the address at the slave station 102 side port of the bridge 100. Further, the bridge 100 transmits only the “existence confirmation response frame” from the slave station 102 to the entire segment on the master station 100 side. Therefore, the “existence confirmation response frame” transmitted from the slave station 102 via the bridge 100 is also learned at the master station side port of another bridge 100.
  • the bridge 100 relays between the master station 101 and the slave station 102, performs snooping on the frames relayed at the initial setting, and frames other than the frames addressed to the master station 101 or from the master station 102 In the case of discarding and relaying to the master station 101, a database 203 for identifying all stations connected to the master station 100 side or transmitting to the other bridge 100 and reception of the initial setting completion notification frame And a sequence determination unit 202 that determines completion of initialization based on the snooping frame and the database 203, so that flooding that occurs in a situation where learning is insufficient at the time of initialization is suppressed, Not only can consumption be reduced, but the database 2 Information to be registered in 3 can be realized by the conditional expression only, the processing load reduction of the bridge 100, it is possible to realize a low-performance and low-cost of parts constituting.
  • end of the initial sequence can be more reliably determined by combining the method described in the third embodiment and the method described in the first or second embodiment.
  • the database 203 holds information for determining an initialization sequence, such as message type information and a conditional expression for determining completion of initial setting.
  • the server 103 can change the information.
  • the address information of the slave station 102 is stored in the database 203 or can be registered from the external server 103, and the initial setting is completed at the time of snooping, so that the initial setting is not completed and an error is output.
  • an erroneous connection can be detected.
  • the sequence determination unit 202 confirms the address information in the database 203 by snooping even during the normal sequence. An erroneous connection can be detected by detecting an unregistered slave station and outputting an error.
  • Embodiment 5 FIG.
  • a case where the present invention is applied to an air conditioner network will be described as an application application example having the configuration described in the first to fourth embodiments.
  • description will be made assuming that all the configurations and operations described in the first to fourth embodiments are provided.
  • the master station 101 in FIG. 1 corresponds to an air conditioning management control device
  • the slave station 102 corresponds to an air conditioning outdoor unit or an air conditioning indoor unit.
  • the air conditioning management control device corresponding to the master station 101 performs management and control for a plurality of air conditioning outdoor units and a plurality of air conditioning indoor units.
  • the bridge 100 is a single device or is physically mounted on a slave station 102 (air conditioner outdoor unit) closest to the bridge 100. Further, by using the other slave station 102 connected to the bridge 100 as an air conditioning indoor unit, a layout that is not different from the conventional air conditioning system can be obtained. Also, with this layout, control information required only for the same refrigerant system can be transmitted only from the bridge 100 to the slave station 102 side.
  • the traffic suppression effect can be obtained for the entire network.
  • the slave station 102 other than the slave station 102 (air conditioning outdoor unit) closest to the bridge 100 than the bridge 100 is an air conditioning indoor unit.
  • the slave station may be a plurality of air conditioning outdoor units. You may make it comprise as several air-conditioning indoor unit connected to each.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Small-Scale Networks (AREA)

Abstract

Le présent pont comprend une unité relais (201), une base de données (203) permettant d'identifier une séquence initiale, et une unité de détermination de séquence (202). L'unité relais (201) est connectée à une station maîtresse (101) et à une station esclave (102) et lorsqu'elle relaye les trames, surveille le trafic sur lesdites trames. Avant que les réglages initiaux soient achevés, l'unité relais (201) ne relaye que les trames adressées à la station maîtresse ou provenant de celle-ci et lorsqu'elle relaye des données vers le côté station maîtresse, l'unité relais (201) transmet vers chaque station connectée ou vers un autre pont. A partir des trames dont le trafic est surveillé et de la base de données (203), l'unité de détermination de séquence (202) détermine si les réglages initiaux précités sont ou non achevés. Cela permet de réduire la largeur de bande consommée en évitant l'inondation se produisant lorsque l'apprentissage est insuffisant au moment de l'initialisation.
PCT/JP2013/002224 2013-04-01 2013-04-01 Pont, système de réseau, unité extérieure de climatisation, et système de réseau de climatisation WO2014162331A1 (fr)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016189974A1 (fr) * 2015-05-28 2016-12-01 三菱電機株式会社 Système de climatisation
JP2019511800A (ja) * 2016-03-29 2019-04-25 ロケーティー アーゲー 機能施設の使用をモニタリングするための装置、システムおよび方法
US11893147B2 (en) 2016-03-11 2024-02-06 Limbic Life Ag Occupant support device and system for controlling objects

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005004407A1 (fr) * 2003-07-07 2005-01-13 Yazaki Corporation Procede d'assignation de capacite de transmission, reseau de communication, et dispositif de gestion de ressource de reseau
JP2005217715A (ja) * 2004-01-29 2005-08-11 Fujitsu Access Ltd Ｖｌａｎセグメント間転送機能を有するレイヤ２スイッチ

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005004407A1 (fr) * 2003-07-07 2005-01-13 Yazaki Corporation Procede d'assignation de capacite de transmission, reseau de communication, et dispositif de gestion de ressource de reseau
JP2005217715A (ja) * 2004-01-29 2005-08-11 Fujitsu Access Ltd Ｖｌａｎセグメント間転送機能を有するレイヤ２スイッチ

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016189974A1 (fr) * 2015-05-28 2016-12-01 三菱電機株式会社 Système de climatisation
WO2016189737A1 (fr) * 2015-05-28 2016-12-01 三菱電機株式会社 Système de climatisation
JPWO2016189974A1 (ja) * 2015-05-28 2017-08-17 三菱電機株式会社 空気調和システム
US11893147B2 (en) 2016-03-11 2024-02-06 Limbic Life Ag Occupant support device and system for controlling objects
JP2019511800A (ja) * 2016-03-29 2019-04-25 ロケーティー アーゲー 機能施設の使用をモニタリングするための装置、システムおよび方法
US10600013B2 (en) 2016-03-29 2020-03-24 Locatee Ag Device, system and method for monitoring usage of functional facilities
JP2020194549A (ja) * 2016-03-29 2020-12-03 ロケーティー アーゲー 機能施設の使用をモニタリングするための装置、システムおよび方法
US11386372B2 (en) 2016-03-29 2022-07-12 Locatee Ag Device, system and method for monitoring usage of functional facilities
JP7150353B2 (ja) 2016-03-29 2022-10-11 ロケーティー アーゲー 機能施設の使用をモニタリングするための装置、システムおよび方法

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