JP2008042301A - Power line conveyance communication system and power path braking device - Google Patents

Power line conveyance communication system and power path braking device Download PDF

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JP2008042301A
JP2008042301A JP2006210699A JP2006210699A JP2008042301A JP 2008042301 A JP2008042301 A JP 2008042301A JP 2006210699 A JP2006210699 A JP 2006210699A JP 2006210699 A JP2006210699 A JP 2006210699A JP 2008042301 A JP2008042301 A JP 2008042301A
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power
power path
path
communication system
carrier communication
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Hideo Soma
英雄 相馬
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Sharp Corp
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02B90/20—Smart grids as enabling technology in buildings sector
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
    • Y04S40/121—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using the power network as support for the transmission

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  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To suppress the generation quantity of noise in a power line conveyance communication system as a whole, having a plurality of power paths. <P>SOLUTION: A power line conveyance communication system X is provided with a power path braking devices 81 to 86 for deciding whether electrical equipment 61 has been connected to each of a plurality of power routes 51 to 56, from which power paths 31 to 33 for transmitting power to be supplied from a power supply facility are branched, and for braking the paths, when it is decided that the electric equipment 61 has not been connected. Thus, the power paths to which the electrical equipment 61 is not connected from among the power paths 51 to 56 are broken by the power path braking devices 81 to 86 in the power line conveyance communication system X. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は，電力経路を通信回線として利用する電力線搬送通信システムに関し，特に，電力経路上で発生するノイズの影響を抑制する技術に関するものである。   The present invention relates to a power line carrier communication system that uses a power path as a communication line, and more particularly to a technique for suppressing the influence of noise generated on the power path.

ここに，図５は従来の電力線搬送通信システムＺの概略構成を示すブロック図である。
図５に示すように，前記電力線搬送通信システムＺは，商用電源の電力供給設備（所定の電力源の一例）から電力経路（電力線）１１を経て供給される電力を分配する分電盤１と，前記分電盤１により前記電力経路１１が分岐された複数の電力経路（電力線）３１〜３３と，前記電力経路３１〜３３を更に分岐する複数の分岐点４１〜４３と，該分岐点４１〜４３により分岐された電力経路（電力線）５１〜５６と，該電力経路５１〜５６に接続され，電力の供給によって稼働する電気機器６１が接続されるコンセント７１〜７６とを備えている。なお，前記電気機器６１は，例えばパーソナルコンピュータやテレビジョン受像機，ハードディスク（ＨＤ）レコーダなどである。
前記分電盤１には，前記電力経路１１から供給される電力を前記電力経路３１〜３３に分配すると共に当該電力線搬送通信システムＺにおける消費電力を計測する電力量計２１と，光ファイバ回線や電話回線などの通信網に接続された電力線（ＰＬＣ）モデム２２とが設けられている。前記電力線搬送通信システムＸでは，前記分電盤１から供給される電力が，前記電力経路３１〜３３によって前記電力経路５１〜５６各々に伝送される。
前記ＰＬＣモデム２２は，前記電力供給設備から供給される電力に前記通信網から伝送される電気信号を重畳して前記電力経路３１〜３３に出力すると共に，前記電気機器６１から前記電力経路３１〜３３上に出力された電気信号を該電力経路３１〜３３上の電力から抽出して前記通信網に出力するものである。また，前記ＰＬＣモデム２２は，前記電力線搬送通信システムＺ内に接続された複数の前記電気機器６１間における電気通信にも用いられる。 FIG. 5 is a block diagram showing a schematic configuration of a conventional power line carrier communication system Z.
As shown in FIG. 5, the power line carrier communication system Z includes a distribution board 1 that distributes power supplied via a power path (power line) 11 from a power supply facility (an example of a predetermined power source) of a commercial power source. , A plurality of power paths (power lines) 31 to 33 branched from the power path 11 by the distribution board 1, a plurality of branch points 41 to 43 further branching the power paths 31 to 33, and the branch point 41 Power paths (power lines) 51 to 56 branched by .about.43 and outlets 71 to 76 connected to the power paths 51 to 56 and connected to the electric equipment 61 that operates by supplying power. The electric device 61 is, for example, a personal computer, a television receiver, a hard disk (HD) recorder, or the like.
The distribution board 1 includes a power meter 21 that distributes power supplied from the power path 11 to the power paths 31 to 33 and measures power consumption in the power line carrier communication system Z, an optical fiber line, A power line (PLC) modem 22 connected to a communication network such as a telephone line is provided. In the power line communication system X, the power supplied from the distribution board 1 is transmitted to the power paths 51 to 56 through the power paths 31 to 33, respectively.
The PLC modem 22 superimposes an electric signal transmitted from the communication network on the power supplied from the power supply facility and outputs the superimposed signal to the power paths 31 to 33, and from the electric device 61 to the power paths 31 to 31. The electric signal output on 33 is extracted from the power on the power paths 31 to 33 and output to the communication network. The PLC modem 22 is also used for electrical communication between the plurality of electrical devices 61 connected in the power line carrier communication system Z.

ところで，前記電力線搬送通信システムＺでは，前記電力経路３１〜３３，５１〜５６上に外来ノイズ（サージ（雷）や電磁波など）や反射ノイズなどが発生する場合があり，このノイズは通信障害や伝送効率の低下などの問題を招来する。
このような問題を解決するべく，例えば特許文献１に記載された電力線搬送通信システムでは，電力線搬送通信が行われている第一の電力経路上において，正常時のノイズよりも高いノイズが発生した場合には，前記第一の電力経路と異なる第二の伝送経路を用いて電力線搬送通信が行われる。具体的には，前記第一の電力経路と前記第二の電力経路との間で無線通信が行われることにより，該第一の電力経路に接続された電気機器は，前記第二の電力経路を介して電力線搬送通信を行うことになる。但し，この場合には，無線通信を行うための装置が多数必要となり高価となるという問題がある。
特開２００６−３３７６８号公報 By the way, in the power line carrier communication system Z, external noise (surge (thunder), electromagnetic waves, etc.) or reflected noise may occur on the power paths 31-33, 51-56. This causes problems such as a decrease in transmission efficiency.
In order to solve such a problem, for example, in the power line carrier communication system described in Patent Document 1, noise higher than normal noise is generated on the first power path on which power line carrier communication is performed. In this case, power line carrier communication is performed using a second transmission path different from the first power path. Specifically, when wireless communication is performed between the first power path and the second power path, the electrical device connected to the first power path is connected to the second power path. Power line carrier communication is performed via However, in this case, there is a problem that a large number of devices for performing wireless communication are required, which is expensive.
JP 2006-33768 A

しかしながら，前記電力線搬送通信システムＺでは，例えば前記電力経路５１にノイズが発生した場合にはそのノイズが前記電力経路５２における電力線搬送通信に悪影響を与えることになる。これは，前記電力経路５１が前記電力線搬送通信システムＺに接続されている限り，前記特許文献１の発明を適用しても同様に生じる問題である。
従って，本発明は上記事情に鑑みてなされたものであり，その目的とするところは，複数の電力経路を有する電力線搬送通信システム全体におけるノイズの発生量を抑制することにある。 However, in the power line carrier communication system Z, for example, when noise occurs in the power path 51, the noise adversely affects power line carrier communication in the power path 52. As long as the power path 51 is connected to the power line carrier communication system Z, this is a problem that similarly occurs even if the invention of Patent Document 1 is applied.
Therefore, the present invention has been made in view of the above circumstances, and an object thereof is to suppress the amount of noise generated in the entire power line carrier communication system having a plurality of power paths.

上記目的を達成するために本発明は，所定の電力源から供給される電力を伝送する第一の電力経路と，前記第一の電力経路が分岐された複数の第二の電力経路とを備えてなり，少なくとも前記第二の電力経路で伝送される電力に電気信号を重畳して搬送する電力線搬送通信システムに適用されるものであって，前記第二の電力経路各々に電気機器が接続されているか否かを判定し，前記電気機器が接続されていないと判定された前記第二の電力経路を遮断することを特徴とする電力線搬送通信システムとして構成される。
このように，本発明によれば，前記電気機器が接続されていない電力供給が不要な前記第二の電力経路を遮断することによりノイズの発生原因が減少される。したがって，当該電力線搬送通信システム全体におけるノイズの発生量が抑制され，信頼性の高い電力線搬送通信を行うことができる。
このとき，前記第二の電力経路の遮断は，該第二の電力経路上のいずれの位置で行われてもよいが，できるだけ該第二の電力経路上に発生するノイズの当該電力線搬送通信システム全体への影響を抑制するためには，前記第一の電力経路と前記第二の電力経路との接続部近傍において前記第二の電力経路を遮断することが望ましい。 To achieve the above object, the present invention comprises a first power path for transmitting power supplied from a predetermined power source, and a plurality of second power paths branched from the first power path. And is applied to a power line carrier communication system that carries an electric signal superimposed on at least the electric power transmitted through the second electric power path, and an electric device is connected to each of the second electric power paths. The power line communication system is configured to determine whether or not the second electric power path is determined as being not connected to the electric power line.
As described above, according to the present invention, the cause of noise is reduced by blocking the second power path that does not require power supply to which the electrical device is not connected. Therefore, the amount of noise generated in the entire power line carrier communication system is suppressed, and highly reliable power line carrier communication can be performed.
At this time, the interruption of the second power path may be performed at any position on the second power path, but the power line carrier communication system of noise generated on the second power path as much as possible. In order to suppress the influence on the whole, it is desirable to block the second power path in the vicinity of the connection portion between the first power path and the second power path.

また，前記電気機器が接続されていないことの判定は，前記第二の電力経路に流れる電流を検出する電流検出手段を設けておき，該電流検出手段により電流が流れてないことが検出されたことにより行うことができる。
一方，前記電気機器が接続されていることの判定は，遮断された前記第二の電力経路における前記電気機器の接続部側に微電流を出力する微電流出力手段を設けておき，該微電流出力手段により出力される微電流の電圧降下が検出されたことにより行うことができる。そして，前記電力線搬送通信システムでは，前記電気機器が接続されていると判定された場合に，前記第二の電力経路が確立される。 In addition, the determination that the electrical device is not connected is provided with current detection means for detecting a current flowing through the second power path, and it is detected that no current is flowing by the current detection means. Can be done.
On the other hand, it is determined that the electrical device is connected by providing a minute current output means for outputting a minute current to the connection portion side of the electrical device in the interrupted second power path. This can be done by detecting the voltage drop of the minute current output by the output means. In the power line carrier communication system, when it is determined that the electrical device is connected, the second power path is established.

なお，本発明は，前記電力線搬送通信システムに設けられた電力経路遮断装置として捉えることができる。即ち，所定の電力源から供給される電力を伝送する第一の電力経路と，前記第一の電力経路が分岐された複数の第二の電力経路とを備えてなり，少なくとも前記第二の電力経路で伝送される電力に電気信号を重畳して搬送する電力線搬送通信システムに設けられ，前記第二の電力経路の遮断の有無を制御する電力経路遮断装置であって，前記第二の電力経路各々に電気機器が接続されているか否かを判定し，前記電気機器が接続されていないと判定された前記第二の電力経路を遮断することを特徴とする電力経路遮断装置として構成される。このように構成された前記電力経路遮断装置を従来の電力線搬送通信システムに適用することにより同様の効果を得ることができる。   The present invention can be understood as a power path interruption device provided in the power line carrier communication system. That is, a first power path for transmitting power supplied from a predetermined power source, and a plurality of second power paths branched from the first power path, at least the second power path. A power path cutoff device provided in a power line carrier communication system that superimposes an electrical signal on power transmitted through a path and controls whether or not the second power path is interrupted, wherein the second power path Whether or not an electric device is connected to each other is determined, and the second power path that is determined not to be connected to the electric device is cut off. A similar effect can be obtained by applying the power path interrupting device thus configured to a conventional power line carrier communication system.

本発明によれば，前記電気機器が接続されていない電力供給が不要な前記第二の電力経路が遮断されることによりノイズの発生原因が減少される。したがって，当該電力線搬送通信システム全体におけるノイズの発生量が抑制され，信頼性の高い電力線搬送通信を行うことができる。   According to the present invention, the cause of noise is reduced by blocking the second power path that does not require power supply to which the electrical device is not connected. Therefore, the amount of noise generated in the entire power line carrier communication system is suppressed, and highly reliable power line carrier communication can be performed.

以下添付図面を参照しながら，本発明の実施の形態について説明し，本発明の理解に供する。尚，以下の実施の形態は，本発明を具体化した一例であって，本発明の技術的範囲を限定する性格のものではない。
ここに，図１は本発明の実施の形態に係る電力線搬送通信システムＸの概略構成を示すブロック図，図２は前記電力線搬送通信システムＸに設けられた電力経路遮断装置８１（８２〜８６）の回路構成を示す図，図３は前記電力経路遮断装置８１（８２〜８６）で実行される電力経路遮断制御処理の手順の一例を説明するためのフローチャートである。なお，前述した従来の電力線搬送通信システムＺ（図５参照）と同様の構成要素については同じ符号を付してその説明を省略する。
図１に示すように，前記電力線搬送通信システムＸは，前記電力経路（電力線）５１〜５６と前記電力経路（電力線）３１〜３３とが接続される前記分岐点４１〜４３の近傍に，前記電力経路５１〜５６各々の遮断或いは確立を制御する電力経路遮断装置８１〜８６が設けられている点で前記電力線搬送通信システムＺと異なる。ここに，本実施の形態においては，前記電力経路３１〜３３が第一の電力経路の一例，前記電力経路５１〜５６が第二の電力経路の一例，前記分岐点４１〜４３が接続部の一例である。 Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings so that the present invention can be understood. The following embodiment is an example embodying the present invention, and does not limit the technical scope of the present invention.
FIG. 1 is a block diagram showing a schematic configuration of a power line carrier communication system X according to an embodiment of the present invention, and FIG. 2 is a power path interruption device 81 (82 to 86) provided in the power line carrier communication system X. FIG. 3 is a flowchart for explaining an example of a procedure of power path cutoff control processing executed by the power path cutoff device 81 (82 to 86). In addition, the same code | symbol is attached | subjected about the component similar to the conventional power line carrier communication system Z (refer FIG. 5) mentioned above, and the description is abbreviate | omitted.
As shown in FIG. 1, the power line carrier communication system X includes the power paths (power lines) 51 to 56 and the power paths (power lines) 31 to 33 in the vicinity of the branch points 41 to 43. The power line communication system Z is different from the power line communication system Z in that power path cut-off devices 81 to 86 for controlling the cut-off or establishment of the power paths 51 to 56 are provided. Here, in the present embodiment, the power paths 31 to 33 are examples of a first power path, the power paths 51 to 56 are examples of a second power path, and the branch points 41 to 43 are connection parts. It is an example.

まず，図２を用いて，前記電力経路遮断装置８１の概略構成について説明する。なお，ここでは前記電力経路遮断装置８１を例に挙げて説明するが，前記電力経路遮断装置８２〜８６についても同様に構成される。
図２に示すように，前記電力経路遮断装置８１は，前記電力経路５１上に流れる電流を検出する電流計９１（電流検出手段の一例）と，前記電力経路５１上に設けられた接点９２ａ，９２ｂを開閉することによりの該電力経路５１の確立，遮断を切り替えるリレー回路９２と，当該回路遮断装置８１全体を制御するＣＰＵやＲＡＭ，ＲＯＭ等の制御機器を有する制御部９３と，を備えて構成されている。なお，前記電力経路遮断装置８１は，前記分電盤１から供給される電力によって稼働する。
前記制御部９３は，前記コンセント７１に前記電気機器６１が接続されているか否かを判定する接続判定機能と，前記接続判定機能による判定結果に応じて前記リレー回路９２の駆動を制御することにより前記電力経路５１の遮断の有無を制御する電力経路遮断機能とを備えている。
前記電力線搬送通信システムＸでは，前記電力経路遮断装置８１において前記制御部９３によって後述の電力経路遮断制御処理（図３のフローチャート参照）が実行されることにより，前記電気機器６１が接続されているか否かが判定されると共に，その判定結果に応じて前記電力経路５１の遮断の有無が制御される。ここに，前記電力経路遮断制御処理を実行するときの前記制御部９３が接続判定手段及び電力経路遮断手段に相当する。 First, the schematic configuration of the power path interrupting device 81 will be described with reference to FIG. Here, the power path interrupting device 81 will be described as an example, but the power path interrupting devices 82 to 86 are similarly configured.
As shown in FIG. 2, the power path interruption device 81 includes an ammeter 91 (an example of a current detection unit) that detects a current flowing on the power path 51, and a contact 92 a provided on the power path 51. A relay circuit 92 that switches between establishment and interruption of the power path 51 by opening and closing 92b, and a control unit 93 having a control device such as a CPU, RAM, and ROM for controlling the entire circuit interruption device 81. It is configured. The power path interrupting device 81 is operated by the power supplied from the distribution board 1.
The control unit 93 controls the driving of the relay circuit 92 according to the connection determination function for determining whether or not the electrical device 61 is connected to the outlet 71 and the determination result by the connection determination function. A power path cut-off function for controlling whether or not the power path 51 is cut off.
In the power line carrier communication system X, is the electric path 61 interrupted by the control section 93 executing a power path cutoff control process (refer to the flowchart of FIG. 3) described later to connect the electrical equipment 61? It is determined whether or not the power path 51 is interrupted according to the determination result. Here, the control unit 93 when executing the power path cutoff control process corresponds to a connection determination unit and a power path cutoff unit.

以下，図３のフローチャートを参照しつつ，前記制御部９３によって所定の制御プログラムに従って実行される電力経路遮断制御処理の手順の一例について説明する。なお，図中のＳ１，Ｓ２，…は処理手順（ステップ）の番号を表している。
まず，前記電力経路遮断装置８１では，前記制御部９３によって前記リレー回路９２が制御されて前記接点９２ａ，９２ｂが閉じられることにより，前記電力経路５２が確立される。これにより，前記電力経路３１から前記電力経路５１に電力が供給される。
このとき，前記電力経路５２の前記コンセント７１に前記電気機器６１が接続されていれば，前記電力経路３１から供給される電力が該電気機器６１に供給されるため，前記電流計９１で電流が検出されるが，前記コンセント７１に前記電気機器６１が接続されていない場合には，前記電流計９１では電流が検出されない。 Hereinafter, an example of the procedure of the power path interruption control process executed by the control unit 93 according to a predetermined control program will be described with reference to the flowchart of FIG. In the figure, S1, S2,... Represent processing procedure (step) numbers.
First, in the power path interrupting device 81, the control circuit 93 controls the relay circuit 92 to close the contacts 92a and 92b, thereby establishing the power path 52. As a result, power is supplied from the power path 31 to the power path 51.
At this time, if the electrical device 61 is connected to the outlet 71 of the power path 52, the power supplied from the power path 31 is supplied to the electrical device 61. Although detected, when the electrical device 61 is not connected to the outlet 71, no current is detected by the ammeter 91.

そこで，続くステップＳ２では，前記制御部９３によって，前記電流計９１により電流が検出されているか否かが判断される。
ここで，前記電流計９１により電流が検出されている場合には，前記電気機器６１が接続されていると判定され，前記電流計９１により電流が検出されていない場合には，前記電気機器６１が接続されていないと判定される。ここに，かかる判定処理を実行するときの前記制御部９３が接続判定手段の一例である。
なお，前記電流計９１により検出される電流値に閾値を設定しておき，該閾値を超えたか否かによって前記電気機器６１が接続されたか否かを判定してもよい。 Therefore, in the subsequent step S2, the control unit 93 determines whether or not current is detected by the ammeter 91.
Here, when the current is detected by the ammeter 91, it is determined that the electric device 61 is connected. When the current is not detected by the ammeter 91, the electric device 61 is determined. Is determined not to be connected. Here, the control unit 93 when executing the determination process is an example of a connection determination unit.
A threshold value may be set for the current value detected by the ammeter 91, and it may be determined whether or not the electrical device 61 is connected depending on whether or not the threshold value is exceeded.

そして，前記ステップＳ２において前記電気機器６１が接続されていると判定された場合には（Ｓ２のＹｅｓ側），当該ステップＳ２が繰り返し実行され，前記電力経路５２が確立された状態が継続される。
他方，前記ステップＳ２において前記電気機器６１が接続されていないと判定された場合には（Ｓ２のＮｏ側），処理はステップＳ３に移行する。
ステップＳ３では，前記制御部９３により前記リレー回路９２が制御されて前記接点９２ａ，９２ｂが開放されることにより，前記電力経路５１が遮断される。これにより，前記電力経路５１の遮断が行われた前記接点９２ａ，９２ｂよりも前記コンセント７１側の前記電力経路５１において発生するノイズの伝搬は，該接点９２ａ，９２ｂで遮断され，前記電力経路５２や前記電力経路３１，ひいては前記電力線搬送通信システムＸ全体に影響しない。また，前記電力経路５１は，該電力経路５１と前記電力経路３１との接続部である前記分岐点４１近傍において遮断されるため，余分な電力経路をできるだけ減少させることができる。 And when it determines with the said electric equipment 61 being connected in the said step S2 (Yes side of S2), the said step S2 is repeatedly performed and the state by which the said electric power path | route 52 was established is continued. .
On the other hand, when it is determined in step S2 that the electrical device 61 is not connected (No side of S2), the process proceeds to step S3.
In step S3, the relay circuit 92 is controlled by the controller 93 and the contacts 92a and 92b are opened, so that the power path 51 is interrupted. Thereby, the propagation of noise generated in the power path 51 closer to the outlet 71 than the contacts 92a and 92b where the power path 51 is cut off is cut off at the contacts 92a and 92b, and the power path 52 is cut off. And the power path 31, and thus the entire power line carrier communication system X is not affected. Further, since the power path 51 is cut off in the vicinity of the branch point 41, which is a connection portion between the power path 51 and the power path 31, the extra power path can be reduced as much as possible.

そして，前記ステップＳ３において前記電力経路５１が遮断されると，続くステップＳ４では，前記制御部９３によって，前記遮断された前記電力経路５１における前記コンセント７１側に接続された接続端子９３ａ−９３ｂ間に微電流が出力される。ここに，前記微電流を出力するときの前記制御部９３が微電流出力手段に相当する。
このとき，前記電力経路５２の前記コンセント７１に前記電気機器６１が接続されていれば，前記制御部９３から出力された微電流が該電気機器６１に供給されるため電圧降下が生じるが，接続されていない場合には，電圧降下が生じない。 When the power path 51 is cut off in the step S3, in the subsequent step S4, the control unit 93 connects the connection terminals 93a-93b connected to the outlet 71 side in the cut off power path 51. A very small current is output. Here, the control unit 93 for outputting the minute current corresponds to a minute current output means.
At this time, if the electrical device 61 is connected to the outlet 71 of the power path 52, a small current output from the control unit 93 is supplied to the electrical device 61, so that a voltage drop occurs. If not, there will be no voltage drop.

そこで，次のステップＳ５では，前記制御部９３によって前記電圧降下の有無が検出される。ここに，かかる検出処理を実行するときの前記制御部９３が電圧降下検出手段に相当する。
ここで，前記電圧降下が発生していることが検出されている場合には，前記電気機器６１が接続されていると判定され，前記電圧降下が検出されていない場合には，前記電気機器６１が接続されていないと判定される。ここに，かかる判定処理を実行するときの前記制御部９３が接続判定手段の一例である。 Therefore, in the next step S5, the controller 93 detects the presence or absence of the voltage drop. Here, the control unit 93 when executing such detection processing corresponds to voltage drop detection means.
Here, when it is detected that the voltage drop has occurred, it is determined that the electric device 61 is connected, and when the voltage drop is not detected, the electric device 61 is determined. Is determined not to be connected. Here, the control unit 93 when executing the determination process is an example of a connection determination unit.

そして，前記電気機器６１が接続されていると判定された場合には（Ｓ５のＹｅｓ側），ステップＳ６において前記制御部９３による微電流の出力が停止された後，処理はステップＳ１に戻る。前記ステップＳ１では，前記制御部９３によって前記リレー回路９２が制御されて前記接点９２ａ，９２ｂが閉じられることにより前記電力経路５２が確立される。
他方，前記電気機器６１が接続されていないと判定された場合には（Ｓ５のＮｏ側），当該ステップＳ５が繰り返し実行され，前記電力経路５２が遮断された状態が継続される。 And when it determines with the said electric equipment 61 being connected (Yes side of S5), after the output of the microcurrent by the said control part 93 is stopped in step S6, a process returns to step S1. In the step S1, the relay circuit 92 is controlled by the control unit 93 and the contacts 92a and 92b are closed, whereby the power path 52 is established.
On the other hand, when it is determined that the electrical device 61 is not connected (No side of S5), the step S5 is repeatedly executed, and the state where the power path 52 is cut off is continued.

前記電力線搬送通信システムＸでは，前述した前記電力経路遮断制御処理（図３のフローチャート参照）は，前記電力経路遮断装置８２〜８６においても同様に実行される。これにより，前記電力線搬送通信システムＸでは，前記電力経路５１〜５６のうち，前記電気機器６１が接続されていない電力経路が遮断され，前記電気機器６１が接続された電力経路だけが確立されるため，システム全体のノイズの発生原因が減少される。即ち，前記電気機器６１が接続されていない不要な電力経路を遮断することにより，前記電力線搬送通信システムＸ全体におけるノイズの発生量を抑制することができ，信頼性の高い電力線搬送通信を行うことができる。   In the power line carrier communication system X, the above-described power path cutoff control process (see the flowchart of FIG. 3) is similarly executed in the power path cutoff devices 82 to 86. As a result, in the power line carrier communication system X, the power path to which the electrical device 61 is not connected is cut out of the power paths 51 to 56, and only the power path to which the electrical device 61 is connected is established. Therefore, the cause of noise generation in the entire system is reduced. That is, by blocking unnecessary power paths that are not connected to the electrical equipment 61, it is possible to suppress the amount of noise generated in the entire power line carrier communication system X, and to perform highly reliable power line carrier communications. Can do.

ここに，図４は本発明の実施例に係る電力線搬送通信システムＹの概略構成を示すブロック図である。なお，前記実施の形態で説明した前記電力線搬送通信システムＸ（図１，２参照）と同様の構成要素については同じ符号を付してその説明を省略する。
図４に示すように，本実施例に係る前記電力線搬送通信システムＹは，前記電力経路遮断装置８１〜８６に換えて，前記電力経路（電力線）３１〜３３と前記電力経路１１（電力線）とが接続される前記電力量計２１の近傍に，前記電力経路３１〜３３各々の遮断或いは確立を制御する電力経路遮断装置１８１〜１８３が設けられている点で前記電力線搬送通信システムＸと異なる。ここに，本実施例においては，前記電力経路１１が第一の電力経路の一例，前記電力経路３１〜３３が第二の電力経路の一例，前記電力量計２１が接続部の一例である。 FIG. 4 is a block diagram showing a schematic configuration of the power line carrier communication system Y according to the embodiment of the present invention. In addition, the same code | symbol is attached | subjected about the component similar to the said power line carrier communication system X (refer FIG.1, 2) demonstrated in the said embodiment, and the description is abbreviate | omitted.
As shown in FIG. 4, the power line carrier communication system Y according to the present embodiment replaces the power path interrupting devices 81 to 86 with the power paths (power lines) 31 to 33 and the power paths 11 (power lines). Is different from the power line carrier communication system X in that power path cut-off devices 181 to 183 for controlling the cut-off or establishment of each of the power paths 31 to 33 are provided in the vicinity of the watt-hour meter 21 to which is connected. Here, in the present embodiment, the power path 11 is an example of a first power path, the power paths 31 to 33 are an example of a second power path, and the power meter 21 is an example of a connection portion.

このように構成された前記電力線搬送通信システムＹでは，前記電力経路遮断装置１８１〜１８３によって，前記電力経路３１〜３３各々の遮断或いは確立が制御される。具体的には，前記電力経路３１〜３３のうち，前記電気機器６１が接続された前記電力経路３１，３２は確立され，前記電気機器６１が接続されていない前記電力経路３３は遮断されるように制御される。なお，前記電力経路遮断装置１８１〜１８３及び該電力経路遮断装置１８１〜１８３によって実行される電力経路遮断制御処理については，前記電力経路遮断装置８１〜８６と同様であるためここでは説明を省略する（図２，３参照）。
これにより，前記電力線搬送通信システムＹでは，前記電力経路３１〜３３のうち，前記電気機器６１が接続されていない電力供給が不要な前記電力経路が遮断されることによりノイズの発生原因が減少させてノイズの発生量を抑制することができる。 In the power line carrier communication system Y configured as described above, the power path cut-off devices 181 to 183 control the cut-off or establishment of the power paths 31 to 33, respectively. Specifically, among the power paths 31 to 33, the power paths 31 and 32 to which the electric device 61 is connected are established, and the power path 33 to which the electric device 61 is not connected is blocked. Controlled. The power path cutoff devices 181 to 183 and the power path cutoff control processing executed by the power path cutoff devices 181 to 183 are the same as those of the power path cutoff devices 81 to 86, and thus description thereof is omitted here. (See FIGS. 2 and 3).
As a result, in the power line carrier communication system Y, among the power paths 31 to 33, the cause of noise is reduced by cutting off the power path that does not require the power supply to which the electrical device 61 is not connected. Thus, the amount of noise generated can be suppressed.

また，前記電力線搬送通信システムＸ（図１参照）に，前記電力経路遮断装置８１〜８６と前記電力経路遮断装置１８１〜１８３とを共に設ける構成も他の実施例として考えられる。
この場合には，例えば前記電力経路５１及び前記電力経路５２の両方に前記電気機器６１が接続されていない場合には，前記電力経路３１が遮断され，前記電力経路５１及び前記電力経路５２のいずれか一方に前記電気機器６１が接続されている場合には，前記電力経路３１は確立されるが，前記電気機器６１が接続されていない前記電力経路５１又は前記電力経路５２が遮断されることになる。このように，前記電気機器６１が接続されていない不要な電力経路をできるだけ当該システムから切り離すことによって，該システム全体におけるノイズの発生量を最小限に抑制することができる。 A configuration in which the power path interrupting devices 81 to 86 and the power path interrupting devices 181 to 183 are both provided in the power line carrier communication system X (see FIG. 1) is also conceivable as another embodiment.
In this case, for example, when the electric device 61 is not connected to both the power path 51 and the power path 52, the power path 31 is blocked, and any of the power path 51 and the power path 52 is selected. When the electric device 61 is connected to one of them, the power path 31 is established, but the power path 51 or the power path 52 not connected to the electric device 61 is blocked. Become. In this way, the amount of noise generated in the entire system can be minimized by disconnecting unnecessary power paths to which the electrical device 61 is not connected from the system as much as possible.

本発明の実施の形態に係る電力線搬送通信システムの概略構成を示すブロック図。1 is a block diagram showing a schematic configuration of a power line carrier communication system according to an embodiment of the present invention. 本発明の実施の形態に係る電力線搬送通信システムに設けられた電力経路遮断装置の回路構成を示す図。The figure which shows the circuit structure of the electric power path | route interruption | blocking apparatus provided in the power line carrier communication system which concerns on embodiment of this invention. 電力経路遮断装置で実行される電力経路遮断制御処理の手順の一例を説明するためのフローチャート。The flowchart for demonstrating an example of the procedure of the electric power path | route interruption | blocking control process performed with an electric power path | route interruption | blocking apparatus. 本発明の実施例に係る電力線搬送通信システムの概略構成を示すブロック図。1 is a block diagram showing a schematic configuration of a power line carrier communication system according to an embodiment of the present invention. 従来の電力線搬送通信システムの概略構成を示すブロック図。The block diagram which shows schematic structure of the conventional power line carrier communication system.

符号の説明Explanation of symbols

１…分電盤
１１…電力経路（第一の電力経路の一例）
２１…電力量計（接続部の一例）
２２…ＰＬＣモデム
３１〜３３…電力経路（第一の電力経路，第二の電力経路の一例）
４１〜４３…分岐点（接続部の一例）
５１〜５６…電力経路（第二の電力経路の一例）
６１…電気機器
７１〜７６…コンセント
８１〜８６，１８１〜１８３…電力経路遮断装置
９１…電流計（電流検出手段の一例）
９２…リレー回路
９２ａ，９２ｂ…接点
９３…制御部
９３ａ，９３ｂ…接続端子
Ｘ，Ｙ，Ｚ…電力線搬送通信システム
Ｓ１，Ｓ２，，，…処理手順（ステップ）番号 1 ... distribution board 11 ... power path (an example of a first power path)
21 ... Electricity meter (an example of a connection part)
22 ... PLC modems 31-33 ... power path (an example of a first power path and a second power path)
41-43 ... Branch point (an example of a connection part)
51-56 ... Power path (an example of a second power path)
61 ... Electrical devices 71-76 ... Outlets 81-86, 181-183 ... Power path interruption device 91 ... Ammeter (an example of current detection means)
92 ... Relay circuits 92a, 92b ... Contacts 93 ... Control units 93a, 93b ... Connection terminals X, Y, Z ... Power line carrier communication systems S1, S2, ..., processing procedure (step) numbers

Claims (5)

所定の電力源から供給される電力を伝送する第一の電力経路と，前記第一の電力経路が分岐された複数の第二の電力経路とを備えてなり，少なくとも前記第二の電力経路で伝送される電力に電気信号を重畳して搬送する電力線搬送通信システムであって，
前記第二の電力経路各々に電気機器が接続されているか否かを判定する接続状態判定手段と，
前記接続状態判定手段により前記電気機器が接続されていないと判定された前記第二の電力経路を遮断する電力経路遮断手段と，
を備えてなることを特徴とする電力線搬送通信システム。 A first power path for transmitting power supplied from a predetermined power source; and a plurality of second power paths branched from the first power path, wherein at least the second power path A power line carrier communication system for carrying electrical signals superimposed on transmitted power,
Connection state determination means for determining whether or not an electrical device is connected to each of the second power paths;
Power path blocking means for blocking the second power path determined by the connection state determination means that the electrical device is not connected;
A power line carrier communication system comprising: 前記電力経路遮断手段が，前記第一の電力経路と前記第二の電力経路との接続部近傍において該第二の電力経路を遮断するものである請求項１に記載の電力線搬送通信システム。   2. The power line carrier communication system according to claim 1, wherein the power path blocking means blocks the second power path in the vicinity of a connecting portion between the first power path and the second power path. 前記第二の電力経路に流れる電流を検出する電流検出手段を更に備えてなり，
前記接続状態判定手段が，前記電流検出手段により電流が流れてないことが検出された場合に前記電気機器が接続されていないと判定するものである請求項１又は２のいずれかに記載の電力線搬送通信システム。 A current detecting means for detecting a current flowing through the second power path;
3. The power line according to claim 1, wherein the connection state determination unit determines that the electric device is not connected when the current detection unit detects that no current flows. 4. Carrier communication system. 前記電力経路遮断手段により遮断された前記第二の電力経路における前記電気機器の接続部側に微電流を出力する微電流出力手段と，該微電流出力手段により出力される微電流の電圧降下の有無を検出する電圧降下検出手段と，を更に備えてなり，
前記接続状態判定手段が，前記電圧降下検出手段により電圧降下が検出された場合に前記電気機器が接続されていると判定するものであり，
前記電力経路遮断手段が，前記接続状態判定手段により前記電気機器が接続されていると判定された場合に前記第二の電力経路を確立させてなる請求項１〜３のいずれかに記載の電力線搬送通信システム。 A minute current output means for outputting a minute current to the connection part side of the electric device in the second power path blocked by the power path breaking means, and a voltage drop of the minute current output by the minute current output means. Voltage drop detection means for detecting presence or absence,
The connection state determination means determines that the electrical device is connected when a voltage drop is detected by the voltage drop detection means;
The power line according to any one of claims 1 to 3, wherein the power path cut-off means establishes the second power path when the connection state determination means determines that the electrical device is connected. Carrier communication system. 所定の電力源から供給される電力を伝送する第一の電力経路と，前記第一の電力経路が分岐された複数の第二の電力経路とを備えてなり，少なくとも前記第二の電力経路で伝送される電力に電気信号を重畳して搬送する電力線搬送通信システムに設けられ，前記第二の電力経路の遮断の有無を制御する電力経路遮断装置であって，
前記第二の電力経路各々に電気機器が接続されているか否かを判定する接続状態判定手段を備えてなり，
前記接続状態判定手段により前記電気機器が接続されていないと判定された前記第二の電力経路を遮断することを特徴とする電力経路遮断装置。 A first power path for transmitting power supplied from a predetermined power source; and a plurality of second power paths branched from the first power path, wherein at least the second power path A power path interrupting device that is provided in a power line carrier communication system that superimposes and transmits an electric signal on transmitted power and controls whether or not the second power path is interrupted,
Comprising a connection state determining means for determining whether or not an electrical device is connected to each of the second power paths;
An electric power path interrupting device which interrupts said 2nd electric power path judged with said electric equipment not being connected by said connection state judging means.
JP2006210699A 2006-08-02 2006-08-02 Power line conveyance communication system and power path braking device Pending JP2008042301A (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002111555A (en) * 2000-09-29 2002-04-12 Matsushita Electric Ind Co Ltd Communication system and electrical apparatus
JP2003110471A (en) * 2001-09-26 2003-04-11 Sanyo Electric Co Ltd Power line connection equipment control system and connection apparatus
JP2005107606A (en) * 2003-09-26 2005-04-21 Nagoya Industrial Science Research Inst Power-saving control system for information device using mobile software
JP2005151408A (en) * 2003-11-19 2005-06-09 Matsushita Electric Ind Co Ltd Power-line carrier communication system and feed connector
JP2006149075A (en) * 2004-11-18 2006-06-08 Toshiba Corp Power supply system and power receptacle

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002111555A (en) * 2000-09-29 2002-04-12 Matsushita Electric Ind Co Ltd Communication system and electrical apparatus
JP2003110471A (en) * 2001-09-26 2003-04-11 Sanyo Electric Co Ltd Power line connection equipment control system and connection apparatus
JP2005107606A (en) * 2003-09-26 2005-04-21 Nagoya Industrial Science Research Inst Power-saving control system for information device using mobile software
JP2005151408A (en) * 2003-11-19 2005-06-09 Matsushita Electric Ind Co Ltd Power-line carrier communication system and feed connector
JP2006149075A (en) * 2004-11-18 2006-06-08 Toshiba Corp Power supply system and power receptacle

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