JP2006050079A - Communication path control method in remote monitoring control communication system using IP - Google Patents
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Abstract
【課題】ＳＴＰ等のプロトコルを実装することなく、即座に通信経路を切り替えることができるＩＰを適用した配電線遠方監視制御通信方式における通信経路制御方式の提供
【解決手段】この発明のＩＰを適用した配電線遠方監視制御通信方式における通信経路制御方式は、子局Ｃの送受信機ＳＷ−ＨＵＢには、ポ−ト間のフレ−ムの転送を行う転送モ−ド設定と転送を行わない非転送モ−ド設定とを実装しておき、親局Ｐからの命令に応じて、前記転送モ−ド設定と非転送モ−ド設定を切り替えることが可能であり、前記非転送モ−ド設定を、ネットワ−クがル−プを形成し、リング状ネットワ−クＡ，Ａ’を構成する複数個の子局Ｃのうちの１箇所の子局Ｃの送受信機ＳＷ−ＨＵＢに設定することにより、通信経路のル−プ化を防止できる。
【選択図】 図１Provided is a communication route control method in a distribution line remote monitoring control communication method to which an IP that can immediately switch a communication route without implementing a protocol such as STP is applied. The communication path control method in the distribution line remote monitoring control communication method is that the transmitter / receiver SW-HUB of the slave station C does not perform transfer mode setting for transferring frames between ports and does not perform transfer. It is possible to switch between the transfer mode setting and the non-transfer mode setting according to a command from the master station P by mounting the transfer mode setting. Is set in the transmitter / receiver SW-HUB of one slave station C among the plurality of slave stations C forming the loop and forming the ring networks A and A ′. Can prevent the communication path from being looped .
[Selection] Figure 1
Description
本発明は、ＩＰを適用した配電線遠方監視制御通信方式における通信経路制御方式に関するものである。 The present invention relates to a communication path control method in a distribution line remote monitoring control communication method to which IP is applied.
出願人が開発したＩＰを適用した配電線遠方監視制御通信方式（例えば、特許文献１参照。）が、実用化されており、本方式のネットワ−ク構成は、リング状ネットワ−クであり、冗長化は、高速に復旧を図るために、親局側送受信機ＳＷ−ＨＵＢ（スイッチングハブ）のＲＳＴＰ（ラピッドスパニングツリ−プロトコル）機能を用いて行っている。 The distribution line remote monitoring and control communication system (for example, refer to Patent Document 1) to which the IP developed by the applicant has been put into practical use, and the network configuration of this system is a ring network, Redundancy is performed using the RSTP (Rapid Spanning Tree Protocol) function of the master station side transceiver SW-HUB (switching hub) in order to restore at high speed.
前記ネットワ−ク構成では、親局の送受信機のＲＳＴＰ機能やＳＴＰ（スパニングツリ−プロトコル）機能を用いることにより、通常時、デ−タがル−プし、永久に循環することなしに通信経路の二重化が可能になるので問題はないが、リング状ネットワ−クから分岐された位置にある子局は分岐された通信経路に障害が発生した場合には、孤立してしまい、通信ができなくなるという問題点があった。 In the network configuration, by using the RSTP function or the STP (spanning tree protocol) function of the transceiver of the master station, the data is normally looped and the communication path is not circulated permanently. However, there is no problem because the slave station at the position branched from the ring network becomes isolated and cannot communicate when a failure occurs in the branched communication path. There was a problem.
この問題点を解決するためには、同一リング状ネットワ−ク上の異なる２点から分岐した通信線同士を接続するか、または他のリング状ネットワ−クに接続し、メッシュ状のネットワ−クを構築し、各子局までの通信経路を多重化することにより可能であるが、そのためには、デ−タがル−プし、永久に循環することを回避する手段としてＳＴＰ等のプロトコルを子局の送受信機に実装しなければならず、機器の費用が嵩むとともに、通常時にもＢＰＤＵ（Ｂｒｉｄｇｅ Ｐｒｏｔｏｃｏｌ Ｄａｔａ Ｕｎｉｔ）を送信する必要あるので、トラフィックを増加させるという問題点があった。 In order to solve this problem, communication lines branched from two different points on the same ring network are connected to each other, or connected to another ring network, and the mesh network is connected. This is possible by multiplexing the communication paths to each slave station, but for this purpose, a protocol such as STP is used as a means to avoid data looping and circulating forever. There is a problem in that it has to be mounted on the transceiver of the slave station, which increases the cost of the device and increases the traffic because it is necessary to transmit BPDU (Bridge Protocol Data Unit) even during normal times.
さらに、機器増設が行われた場合、最適化のために、増設された通信経路上にある子局のＳＴＰの設定値の見直しが必要になり、場合によっては、設定値の変更が必要になるという問題点があった。 Furthermore, when equipment is added, it is necessary to review the STP setting value of the slave station on the added communication path for optimization, and in some cases, the setting value needs to be changed. There was a problem.
また、ＳＴＰを使用した場合、障害復旧までに、しばらく通信ができない時間が発生するという問題があり、この通信不能となる時間は、一般的なネットワ−クでは殆ど問題にならないが、配電線遠方監視・制御を目的とするネットワ−クではリアルタイムの対応が重要であることから問題点になる。
この発明は、背景技術で記述した問題点を解消するためになされたもので、ＳＴＰ等のプロトコルを実装することなく、即座に通信経路を切り替えることができるＩＰを適用した配電線遠方監視制御通信方式における通信経路制御方式の提供を目的とするものである。 The present invention was made in order to solve the problems described in the background art, and the distribution line remote monitoring control communication to which the IP that can immediately switch the communication path without implementing a protocol such as STP is applied. The purpose of this method is to provide a communication path control method.
この発明のＩＰを適用した配電線遠方監視制御通信方式における通信経路制御方式は、配電系統の営業所に設置された親局の送受信機を起点とし、高圧配電線に対応する適当箇所に設置され、送受信機を備えた複数個の子局でリング状ネットワ−クを形成し、該リング状ネットワ−ク上の子局から他の子局へ分岐した形態のメッシュ状ネットワ−クにおける通信に、ＩＰを適用した配電線遠方監視制御通信方式において、子局の送受信機には、ポ−ト間のフレ−ムの転送を行う転送モ−ド設定と転送を行わない非転送モ−ド設定とを実装しておき、親局からの命令に応じて、前記転送モ−ド設定と非転送モ−ド設定を切り替えることが可能であり、前記非転送モ−ド設定を、ネットワ−クがル−プを形成し、リング状ネットワ−クを構成する複数個の子局のうちの１箇所の子局の送受信機に設定することにより通信経路のル−プ化を防止することを特徴とするものである。 The communication path control method in the distribution line remote monitoring control communication method to which the IP of the present invention is applied is based on the transmitter / receiver of the master station installed in the sales office of the distribution system, and is installed at an appropriate location corresponding to the high voltage distribution line. For communication in a mesh network in a form in which a ring network is formed by a plurality of slave stations equipped with a transceiver and branched from the slave station on the ring network to other slave stations, In the remote monitoring control communication system to which IP is applied, the slave station transmitter / receiver has a transfer mode setting for transferring a frame between ports and a non-transfer mode setting for not transferring. It is possible to switch between the transfer mode setting and the non-transfer mode setting according to a command from the master station, and the network does not change the non-transfer mode setting. -Form a loop to form a ring network Le communication path by setting the transceiver of the slave station of one portion in several slave stations - is characterized in preventing flop of.
この発明は上述のように構成されているので、次のような効果を奏する。
（１）リング状ネットワ−クから分岐された位置にある子局は、分岐された通信経路に障害が発生した場合でも、通信経路を確保できる。
（２）ＳＴＰ等のプロトコルを子局の送受信機に実装する必要がないので、機器の費用が嵩むということがなく、通常時にもＢＰＤＵを送信する必要はないので、トラフィックを増加させることがない。
（３）子局の送受信機にＳＴＰ等のプロトコルを実装する必要がないので、機器増設が行われた場合でも、最適化のために、増設された通信経路上にある子局のＳＴＰの設定値の見直しが不要である。
（４）ＳＴＰを使用した場合において発生するような通信不能時間がなく、即刻、障害の検知及び通信経路の再構築が可能である。
Since the present invention is configured as described above, the following effects can be obtained.
(1) A slave station at a position branched from the ring network can secure a communication path even when a failure occurs in the branched communication path.
(2) Since it is not necessary to implement a protocol such as STP in the transmitter / receiver of the slave station, there is no need to increase the cost of the equipment, and it is not necessary to transmit BPDU even during normal times, so traffic is not increased. .
(3) Since there is no need to implement a protocol such as STP in the transmitter / receiver of the slave station, even when equipment is added, the STP setting of the slave station on the added communication path is set for optimization. No review of the value is required.
(4) There is no incommunicable time that occurs when STP is used, and it is possible to immediately detect a failure and reconstruct a communication path.
ＳＴＰ等のプロトコルを実装することなく、即座に通信経路を切り替えることができるＩＰを適用した配電線遠方監視制御通信方式における通信経路制御方式の提供という目的を、親局の命令により切り替えが可能な、転送モ−ド設定と非転送モ−ド設定を全ての子局の送受信機に実装することにより実現できた。 The purpose of providing the communication path control method in the remote monitoring control communication system using the IP that can switch the communication path immediately without implementing a protocol such as STP can be switched by the command of the master station This can be realized by implementing the transfer mode setting and the non-transfer mode setting in the transceivers of all the slave stations.
本発明の実施の一例を図面を参照しながら説明する。図１に示すように、親局Ｐの送受信機に５つの子局Ｃ１，Ｃ２，Ｃ３，Ｃ４，Ｃ５の各送受信機ＳＷ−ＨＵＢがリング状ネットワ−クＡを構成し、リング状ネットワ−クＡ上の子局Ｃ２の送受信機ＳＷ−ＨＵＢからは子局Ｃ６，Ｃ７の各送受信機ＳＷ−ＨＵＢが分岐し、さらにリング状ネットワ−クＡ上の子局Ｃ３の送受信機ＳＷ−ＨＵＢからは子局Ｃ８の送受信機ＳＷ−ＨＵＢが分岐し、分岐した末端の子局Ｃ７の送受信機ＳＷ−ＨＵＢと子局Ｃ８の送受信機ＳＷ−ＨＵＢとは通信線で接続され、リング状ネットワ−クＡ’を構成している。 An embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, the transceiver SW-HUB of five slave stations C1, C2, C3, C4, and C5 constitutes the ring network A in the transceiver of the master station P, and the ring network The transceiver SW-HUB of the slave stations C6 and C7 branches from the transceiver SW-HUB of the slave station C2 on the A, and further from the transceiver SW-HUB of the slave station C3 on the ring network A. The transmitter / receiver SW-HUB of the slave station C8 branches, and the transmitter / receiver SW-HUB of the branch slave station C7 and the transmitter / receiver SW-HUB of the slave station C8 are connected by a communication line, and the ring network A Make up.
子局Ｃ１〜Ｃ８の各送受信機ＳＷ−ＨＵＢには、全てのポ−ト間のフレ−ムの転送を行う転送モ−ド設定と転送を行わない非転送モ−ド設定を実装している。
前記転送モ−ド設定と非転送モ−ド設定は、親局Ｐからの命令に応じて、切り替えることが可能である。
In each of the transceivers SW-HUBs of the slave stations C1 to C8, a transfer mode setting for transferring a frame between all ports and a non-transfer mode setting for not transferring are implemented. .
The transfer mode setting and the non-transfer mode setting can be switched according to a command from the master station P.
親局Ｐの送受信機ＳＷ−ＨＵＢから、リング状ネットワ−クＡ上の子局Ｃ２の送受信機ＳＷ−ＨＵＢから分岐した子局Ｃ７の送受信機ＳＷ−ＨＵＢに対する通信は、リング状ネットワ−クＡ’を構成する子局Ｃ２，Ｃ３，Ｃ６，Ｃ７，Ｃ８の各送受信機ＳＷ−ＨＵＢのうち１つの子局Ｃ８の送受信機ＳＷ−ＨＵＢを非転送モ−ドに設定すると、親局Ｐの送受信機から子局Ｃ７の送受信機への通信は、親局Ｐの送受信機ＳＷ−ＨＵＢから子局Ｃ１，Ｃ２，Ｃ６，Ｃ７の各送受信機を経由する通信経路Ｒ１が構築され、通信経路のル−プ化を防止できる。また、通常時、親局Ｐと子局Ｃ１〜Ｃ８間の通信は、ユニキャストを用いて行い、トラフィックを低減している。 Communication from the transceiver SW-HUB of the master station P to the transceiver SW-HUB of the slave station C7 branched from the transceiver SW-HUB of the slave station C2 on the ring network A is performed in the ring network A. When the transceiver SW-HUB of one slave station C8 is set to the non-transfer mode among the transceiver SW-HUBs of the slave stations C2, C3, C6, C7, C8 that constitute ' Communication from the mobile station to the transmitter / receiver of the slave station C7 is performed by establishing a communication path R1 from the transmitter / receiver SW-HUB of the master station P via the transmitter / receiver of the slave stations C1, C2, C6, and C7. -It can prevent the formation. Further, during normal times, communication between the master station P and the slave stations C1 to C8 is performed using unicast to reduce traffic.
なお、本例では、理解を容易にするために、子局Ｃの数を８個に限定しているが、実際は、営業所に設置される１親局Ｐに対して、高圧配電線に対応する適当箇所に設置される複数個の子局Ｃ（例えば、５００台）のうち、遅延時間を考慮した台数（例えば、１００台）で主なリング状ネットワ−クＡを構成し、さらにリング状ネットワ−クＡ上の子局Ｃから分岐した複数個の子局Ｃで別のリング状のネットワ−クＡ’（通常は複数個）を構成している。 In this example, in order to facilitate understanding, the number of slave stations C is limited to eight, but in reality, it corresponds to a high-voltage distribution line for one master station P installed in a sales office. Among the plurality of slave stations C (for example, 500 units) installed at appropriate locations, the main ring network A is configured by the number of units (for example, 100 units) in consideration of the delay time. A plurality of slave stations C branched from the slave station C on the network A constitute another ring network A ′ (usually a plurality).
図２に示すように、リング状ネットワ−クＡ’のＸ点で障害が発生した場合には、子局Ｃ６と子局Ｃ７の各送受信機ＳＷ−ＨＵＢがリンク断を検出し、子局Ｃ６の送受信機ＳＷ−ＨＵＢから親局Ｐの送受信機ＳＷ−ＨＵＢへ状態変化フレ−ムを送信する。なお、子局Ｃ７は孤立し、通信経路がないため、親局Ｐへは送信できない。 As shown in FIG. 2, when a failure occurs at the point X of the ring network A ′, the transmitter / receiver SW-HUB of the slave station C6 and the slave station C7 detects a link break, and the slave station C6 The state change frame is transmitted from the transceiver SW-HUB to the transceiver SW-HUB of the master station P. Note that the slave station C7 is isolated and has no communication path, and therefore cannot be transmitted to the master station P.
親局Ｐは、通信経路を変更するため、子局Ｃ８の送受信機ＳＷ−ＨＵＢの非転送モ−ド設定を転送モ−ド設定に変更する命令をマルチキャストフレ−ムで送信し、子局Ｃ８の送受信機ＳＷ−ＨＵＢを転送モ−ド設定に変更する。これにより、図３に示すように、親局Ｐの送受信機ＳＷ−ＨＵＢから子局Ｃ２，Ｃ３，Ｃ８，Ｃ７の各送受信機ＳＷ−ＨＵＢを経由する通信経路Ｒ２が構築される。なお、アドレステ−ブルを即座に学習させ直すため、一定期間、親局Ｐと子局Ｃ間の通信はマルチキャストにて行う。 In order to change the communication path, the master station P transmits a command to change the non-transfer mode setting of the transceiver SW-HUB of the slave station C8 to the transfer mode setting by a multicast frame, and the slave station C8 The transceiver SW-HUB is changed to the transfer mode setting. As a result, as shown in FIG. 3, a communication path R2 is established from the transceiver SW-HUB of the master station P to each transceiver SW-HUB of the slave stations C2, C3, C8, C7. Note that communication between the master station P and the slave station C is performed by multicast for a certain period in order to immediately learn the address table again.
ヒュ−マンエラ−等によりネットワ−クにル−プが生じた場合においても各子局Ｃの送受信機ＳＷ−ＨＵＢはスト−ムプロテクション機能によりマルチキャストのフレ−ム数を制限する（たとえば、１０％）ため、親局Ｐは、ユニキャストを用いて子局Ｐの転送モ−ド設定を非転送モ−ド設定に切り替え、通信経路のル−プを解決することができる。 Even when a loop occurs in the network due to a human error etc., the transceiver SW-HUB of each slave station C limits the number of multicast frames by the storm protection function (for example, 10% Therefore, the master station P can switch the transfer mode setting of the slave station P to the non-transfer mode setting by using unicast and solve the loop of the communication path.
親局Ｐの送受信機ＳＷ−ＨＵＢは、子局Ｃ６の送受信機ＳＷ−ＨＵＢからの通知により、通信経路が途絶えたことを判断するため、ＳＴＰのようにＢＰＤＵで通常時にトラフィックを増加させることなく、障害の検知が可能となり、一定期間待たなくても障害の検知、通信経路の再構築ができる。また、通信経路選定は親局Ｐにて行うため、機器増設の際においては、各フィ−ルド設置の機器の設定変更が不要になるというメリットもある。 The transmitter / receiver SW-HUB of the master station P determines that the communication path has been interrupted based on the notification from the transmitter / receiver SW-HUB of the slave station C6, so that it does not increase traffic during normal times using BPDU as in STP. Failure detection is possible, and failure detection and communication path reconstruction can be performed without waiting for a certain period of time. In addition, since the communication path is selected by the master station P, there is an advantage that it is not necessary to change the setting of each field-installed device when adding the device.
親局Ｐの送受信機と子局Ｃの各送受信機との間をメッシュ状に接続するネットワ−クの通信経路制御方式として利用できる。 It can be used as a network communication path control method for connecting the transceiver of the master station P and each transceiver of the slave station C in a mesh.
Ａ，Ａ’ リング状ネットワ−ク
Ｐ 親局
Ｃ 子局
Ｒ 通信経路
ＳＷ−ＨＵＢ 送受信機
Ｘ 障害点
A, A 'Ring network P Master station C Slave station R Communication path SW-HUB Transceiver X Failure point
Claims (1)
（イ）子局の送受信機には、ポ−ト間のフレ−ムの転送を行う転送モ−ド設定と転送を行わない非転送モ−ド設定とを実装しておき、親局からの命令に応じて、前記転送モ−ド設定と非転送モ−ド設定を切り替えることが可能であり、
（ロ）前記非転送モ−ドを、ネットワ−クがル−プを形成し、リング状ネットワ−クを構成する複数個の子局のうちの１箇所の子局の送受信機に設定することにより、通信経路のル−プ化を防止する、
以上のことを特徴とするＩＰを適用した配電線遠方監視制御通信方式における通信経路制御方式 Starting from the transmitter / receiver of the master station installed in the sales office of the distribution system, it is installed at an appropriate location corresponding to the high-voltage distribution line, and a ring network is formed by a plurality of slave stations equipped with the transmitter / receiver, In the remote monitoring and control communication system for distribution lines in which IP is applied to the communication in the mesh network in the form of branching from the slave station on the ring network to other slave stations,
(A) The slave station's transceiver is equipped with a transfer mode setting that transfers frames between ports and a non-transfer mode setting that does not transfer. According to the command, it is possible to switch between the transfer mode setting and the non-transfer mode setting,
(B) The non-transfer mode is set in a transmitter / receiver of one slave station among a plurality of slave stations forming a ring network in which the network forms a loop. Prevents looping of the communication path,
Communication path control method in remote monitoring and control communication system using IP characterized by the above
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107896238A (en) * | 2016-10-04 | 2018-04-10 | 丰田自动车株式会社 | Vehicle network system |
| JP2018061223A (en) * | 2016-10-04 | 2018-04-12 | トヨタ自動車株式会社 | On-vehicle network system |
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2004
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107896238A (en) * | 2016-10-04 | 2018-04-10 | 丰田自动车株式会社 | Vehicle network system |
| JP2018061223A (en) * | 2016-10-04 | 2018-04-12 | トヨタ自動車株式会社 | On-vehicle network system |
| US10498635B2 (en) | 2016-10-04 | 2019-12-03 | Toyota Jidosha Kabushiki Kaisha | On-board network system |
| CN107896238B (en) * | 2016-10-04 | 2020-09-18 | 丰田自动车株式会社 | In-vehicle network system |
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