JP2010028316A - Plc repeater, plc network system, and plc equipment - Google Patents

Plc repeater, plc network system, and plc equipment Download PDF

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JP2010028316A
JP2010028316A JP2008185256A JP2008185256A JP2010028316A JP 2010028316 A JP2010028316 A JP 2010028316A JP 2008185256 A JP2008185256 A JP 2008185256A JP 2008185256 A JP2008185256 A JP 2008185256A JP 2010028316 A JP2010028316 A JP 2010028316A
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plc
phase
repeater
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transmission
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Yasuharu Shimada
康晴 島田
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IO Data Device Inc
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IO Data Device Inc
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a PLC repeater, a PLC network system, and a PLC apparatus, capable of carrying out communication with stability, even between different phases in the same manner as that between the identical phases. <P>SOLUTION: A PLC repeater 5 is connected between different phases. A PLC equipment 6 carries out communication of a 4 to 16 kHz band. A PLC equipment 7 carries out communication in a 16 to 28 kHz band. The PLC repeater 5 decodes data superimposed in a carrier wave of L1 phase outputted from the PLC apparatus 6, and supeimposes the decoded data on a carrier wave in a frequency band of L2 phase. In addition, the repeater decodes data superimposed in a carrier wave of L2 phase outputted from the PLC equipment 7, and superimposes the decoded data on a carrier wave in the frequency band of L1 phase. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、単相３線からなる電力線において、位相間での通信を行うＰＬＣ中継器、ＰＬＣネットワークシステム、およびＰＬＣ機器に関する。   The present invention relates to a PLC repeater, a PLC network system, and a PLC device that perform communication between phases in a power line including three single-phase wires.

近年、電力線を介して通信を行う電力線搬送通信（以下、単にＰＬＣと言う。）が普及している。ＰＬＣでは、同相の電力線同士であれば、コンセントにＰＬＣ機器を接続するだけで、簡単に通信を行うことができる。   In recent years, power line carrier communication (hereinafter simply referred to as “PLC”) that performs communication via a power line has become widespread. In the PLC, communication between the power lines of the same phase can be performed simply by connecting the PLC device to the outlet.

しかし、家庭内の電力線は、図１に示すようなＬ１相、Ｌ２相からなる単相三線式１００Ｖ配線が多い。ここで、ＰＬＣ機器１はＬ１相、ＰＬＣ機器２はＬ２相に接続されている。このように、異相間で通信を行う場合、共通の電力線１本（Ｎ相）を用いて通信を行うため、差動通信を行うことができず、同相間の通信に比べてノイズの影響を受けやすい。この場合、通信速度が著しく低下して不安定になることが多く、状況によっては通信が出来ない可能性もある。   However, there are many single-phase three-wire 100V wirings composed of L1 and L2 phases as shown in FIG. Here, the PLC device 1 is connected to the L1 phase, and the PLC device 2 is connected to the L2 phase. Thus, when communicating between different phases, since communication is performed using one common power line (N phase), differential communication cannot be performed, and the influence of noise is greater than communication between in-phase. Easy to receive. In this case, the communication speed is often significantly lowered and unstable, and communication may not be possible depending on the situation.

一方、Ｌ１相とＬ２相を中継する機器を介して異相間で通信を行う手法が各種提案されている（特許文献１、２を参照）。図２は、特許文献１の中継器の構成を示すブロック図である。同図に示すように、特許文献１の構成では、Ｌ１相とＬ２相との間に、Ｌ１送受信部３１、Ｌ２送受信部３２、および制御部３３を内蔵したＰＬＣ中継器３を設けている。   On the other hand, various methods for performing communication between different phases via devices relaying the L1 phase and the L2 phase have been proposed (see Patent Documents 1 and 2). FIG. 2 is a block diagram showing the configuration of the repeater of Patent Document 1. As shown in the figure, in the configuration of Patent Document 1, the PLC repeater 3 including the L1 transmission / reception unit 31, the L2 transmission / reception unit 32, and the control unit 33 is provided between the L1 phase and the L2 phase.

Ｌ１送受信部３１は、ＰＬＣ機器１が出力したＬ１相の搬送波に重畳されているデータを復号する。制御部３３は、このデータをＬ２送受信部３２に送信する。Ｌ２送受信部３２は、受信したデータをＬ２相の搬送波に重畳して出力し、ＰＬＣ機器２に送信する。また、Ｌ２送受信部３２は、ＰＬＣ機器２が出力したＬ２相の搬送波に重畳されているデータを復号する。制御部３３は、このデータをＬ１送受信部３１に送信する。Ｌ１送受信部３１は、受信したデータをＬ１相の搬送波に重畳して出力し、ＰＬＣ機器１に送信する。   The L1 transmission / reception unit 31 decodes the data superimposed on the L1 phase carrier wave output from the PLC device 1. The control unit 33 transmits this data to the L2 transmission / reception unit 32. The L2 transmission / reception unit 32 superimposes the received data on the L2 phase carrier wave and outputs the superimposed data to the PLC device 2. In addition, the L2 transmission / reception unit 32 decodes the data superimposed on the L2-phase carrier wave output from the PLC device 2. The control unit 33 transmits this data to the L1 transmission / reception unit 31. The L1 transmission / reception unit 31 superimposes the received data on the L1 phase carrier wave and outputs the superimposed data to the PLC device 1.

このように、特許文献１の構成では、ＰＬＣ中継器３を介して異相間の通信を行うため、電力線２本を用いた通信を行うことができる。   Thus, in the structure of patent document 1, since communication between different phases is performed via the PLC repeater 3, communication using two electric power lines can be performed.

図３は、特許文献２の中継器の構成を示すブロック図である。同図に示すように、特許文献２の構成では、Ｌ１相とＬ２相との間に、データ通信用の周波数に対して低いインピーダンス、電力供給用の周波数に対して高いインピーダンスを有するフィルタ４１を内蔵したＰＬＣ中継器４を設けている。   FIG. 3 is a block diagram showing the configuration of the repeater of Patent Document 2. As shown in the figure, in the configuration of Patent Document 2, a filter 41 having a low impedance with respect to a frequency for data communication and a high impedance with respect to a frequency for power supply is provided between the L1 phase and the L2 phase. A built-in PLC repeater 4 is provided.

この場合、ＰＬＣ機器１が出力した重畳波は、ＰＬＣ中継器４のフィルタ４１を介して、当該重畳波だけがＬ２相に伝送され、同様にＰＬＣ機器２が出力した重畳波は、ＰＬＣ中継器４のフィルタ４１を介してＬ１相に伝送される。   In this case, only the superimposed wave output from the PLC device 1 is transmitted to the L2 phase via the filter 41 of the PLC repeater 4, and similarly, the superimposed wave output from the PLC device 2 is transmitted to the PLC repeater. 4 is transmitted to the L1 phase via the filter 41.

このため、ＰＬＣ機器１とＰＬＣ機器２は、Ｎ相と、ＰＬＣ中継器４を介したＬ１相およびＬ２相と、の２本の電力線で通信を行うことができる。
特開２００２−２２３１８３号公報 特開２００２−２３２３３２号公報 For this reason, the PLC device 1 and the PLC device 2 can communicate with each other through the two power lines of the N phase and the L1 phase and the L2 phase via the PLC repeater 4.
JP 2002-223183 A JP 2002-232332 A

しかし、特許文献１の構成では、ＰＬＣ機器１およびＰＬＣ機器２で、Ｎ相に出力された互いの搬送波が干渉するおそれがあり、この場合、差動通信を行うことができない。   However, in the configuration of Patent Document 1, there is a possibility that the mutual carrier waves output to the N phase interfere with each other in the PLC device 1 and the PLC device 2, and in this case, differential communication cannot be performed.

また、特許文献２の構成は、Ｎ相と、ＰＬＣ中継器４を介したＬ１相およびＬ２相と、の２本で通信を行うことができるものであるが、Ｎ相の電力線とＬ１相およびＬ２相の電力線との長さが大きく異なると、やはり差動通信を行うことができない。   Moreover, although the structure of patent document 2 can communicate by two lines, N phase and L1 phase and L2 phase via PLC repeater 4, N-phase power line and L1 phase and If the length of the L2-phase power line is greatly different, differential communication cannot be performed.

また、ＰＬＣの通信可能距離を２００ｍとした場合、特許文献２の構成では、ＰＬＣ機器１とＰＬＣ機器２との間の通信可能距離が２００ｍということになり、通信距離が短くなるという問題も発生する。また、特許文献１の構成においても、Ｎ相の電力線で搬送波が干渉するため、やはり通信可能距離は短くなってしまうという問題が発生する。   Further, when the communicable distance of the PLC is 200 m, in the configuration of Patent Document 2, the communicable distance between the PLC device 1 and the PLC device 2 is 200 m, which causes a problem that the communication distance is shortened. To do. Also in the configuration of Patent Document 1, since the carrier wave interferes with the N-phase power line, there is still a problem that the communicable distance is shortened.

そこで、本発明は、異相間でも同相間と同じように安定して通信を行うことができるＰＬＣ中継器、ＰＬＣネットワークシステム、およびＰＬＣ機器を提供することを目的とする。   Accordingly, an object of the present invention is to provide a PLC repeater, a PLC network system, and a PLC device capable of performing stable communication even between different phases as in the same phase.

この発明のＰＬＣ中継器は、電力線の異相間に接続されるＰＬＣ中継器であって、通信帯域を複数に分割し、各相で異なる帯域でＰＬＣ機器との通信を行う複数の送受信部と、前記複数の送受信部の一方から受信したデータを復号し、受信した側の通信帯域と異なる帯域で他方の送受信部に出力する周波数変換手段と、を備えたことを特徴とする。   A PLC repeater according to the present invention is a PLC repeater connected between different phases of a power line, and divides a communication band into a plurality of parts, and communicates with PLC equipment in different bands in each phase; and Frequency conversion means for decoding data received from one of the plurality of transmission / reception units and outputting the data to the other transmission / reception unit in a band different from the communication band on the reception side.

また、この発明のＰＬＣネットワークシステムは、それぞれ異なる相の電力線に接続される複数のＰＬＣ機器と、電力線の異相間に接続されるＰＬＣ中継器と、からなるＰＬＣネットワークシステムであって、前記複数のＰＬＣ機器は、それぞれ異なる帯域で通信を行う通信部を備え、前記ＰＬＣ中継器は、通信帯域を複数に分割し、各相で異なる帯域でＰＬＣ機器との通信を行う複数の送受信部と、前記複数の送受信部の一方から受信したデータを復号し、周波数を変換して他方の送受信部に出力する周波数変換手段と、を備えたことを特徴とする。   The PLC network system of the present invention is a PLC network system comprising a plurality of PLC devices connected to power lines of different phases, and a PLC repeater connected between different phases of the power lines. The PLC device includes a communication unit that performs communication in different bands, and the PLC repeater divides the communication band into a plurality of pieces, and a plurality of transmission / reception units that perform communication with the PLC device in different bands in each phase; Frequency conversion means for decoding data received from one of the plurality of transmission / reception units, converting the frequency and outputting the result to the other transmission / reception unit.

また、この発明のＰＬＣ機器は、請求項２のＰＬＣネットワークシステムにおいて用いられるＰＬＣ機器であることを特徴とする。   The PLC device according to the present invention is a PLC device used in the PLC network system according to claim 2.

このように、本発明においては、異相間で通信周波数帯域を分割し、それぞれ異なる帯域で通信を行うため、Ｎ相の電力線で搬送波が干渉することがない。また、異相間に接続されているそれぞれのＰＬＣ機器とＰＬＣ中継器とが通信を行うため、通信を行う２本の電力線の長さが大きく異なることがない。そのため、同相間と同じように安定した差動通信を行うことができる。   Thus, in the present invention, the communication frequency band is divided between different phases and communication is performed in different bands, so that the carrier does not interfere with the N-phase power line. Moreover, since each PLC apparatus connected between different phases and a PLC repeater communicate, the length of the two power lines which communicate does not differ greatly. Therefore, stable differential communication can be performed as in the same phase.

また、ＰＬＣの通信可能距離を２００ｍとした場合、ＰＬＣ中継器とＰＬＣ機器との間の通信可能距離が２００ｍということになり、通信可能距離が短くなるということもない。無論、Ｎ相の電力線で干渉により通信可能距離が短くなるということもない。   Further, when the communicable distance of the PLC is 200 m, the communicable distance between the PLC repeater and the PLC device is 200 m, and the communicable distance is not shortened. Of course, the communicable distance is not shortened due to interference on the N-phase power line.

なお、周波数帯域の分割態様は、単純に低域をＬ１相で使用し、高域をＬ２相で使用するようにしてもよいし、多数に分割（例えば６分割）して、低域から順に交互にＬ１相、Ｌ２相で帯域使用するようにしてもよい。   The frequency band may be divided by simply using the low frequency in the L1 phase and using the high frequency in the L2 phase, or dividing the frequency band into a large number (for example, 6 divisions) in order from the low frequency. Bands may be alternately used in the L1 phase and the L2 phase.

この発明によれば、異相間で通信周波数帯域を分割し、それぞれ異なる帯域で通信を行うため、異相間でも同相間と同じように安定して通信を行うことができる。   According to the present invention, since the communication frequency band is divided between different phases and communication is performed in different bands, communication can be performed stably between different phases as in the same phase.

以下、図面を参照して本発明の実施形態に係るＰＬＣ中継器について説明する。図４は、本実施形態に係るＰＬＣネットワークシステムを示すブロック図である。   Hereinafter, a PLC repeater according to an embodiment of the present invention will be described with reference to the drawings. FIG. 4 is a block diagram showing a PLC network system according to the present embodiment.

図４に示すＰＬＣネットワークシステムは、ＰＬＣ中継器５、ＰＬＣ機器６、およびＰＬＣ機器７からなる。   The PLC network system shown in FIG. 4 includes a PLC repeater 5, a PLC device 6, and a PLC device 7.

ＰＬＣ中継器５は、Ｌ１相およびＬ２相の電力線が存在する箇所（例えば家庭内の配電盤等）に設置され、Ｌ１相およびＮ相を介してＰＬＣ機器６に接続されている。また、ＰＬＣ中継器５は、Ｌ２相およびＮ相を介してＰＬＣ機器７に接続されている。   The PLC repeater 5 is installed in a place where the L1 phase and L2 phase power lines exist (for example, a distribution board in the home) and is connected to the PLC device 6 via the L1 phase and the N phase. The PLC repeater 5 is connected to the PLC device 7 via the L2 phase and the N phase.

ＰＬＣ機器６は、Ｌ１相およびＮ相に接続されており、４〜１６ｋＨｚの帯域でＰＬＣによる通信を行う。ＰＬＣ機器７は、Ｌ２相およびＮ相に接続されており、１６〜２８ｋＨｚの帯域でＰＬＣによる通信を行う。   The PLC device 6 is connected to the L1 phase and the N phase, and performs communication by PLC in a band of 4 to 16 kHz. The PLC device 7 is connected to the L2 phase and the N phase, and performs communication by PLC in a band of 16 to 28 kHz.

このように、本実施形態のＰＬＣでは、ＰＬＣの通信帯域をＬ１相とＬ２相で分割し、異相間で異なる周波数帯域を用いて通信を行うものである。なお、分割する帯域（４〜１６、１６〜２８ｋＨｚ）はこの例に限るものではない。例えば、低域から順に６分割して、４〜８ｋＨｚ、１２〜１６ｋＨｚ、２０〜２４ｋＨｚをＬ１相が使用し、８〜１２ｋＨｚ、１６〜２０ｋＨｚ、２４〜２８ｋＨｚをＬ２相が使用するように構成することも可能である。   Thus, in the PLC of the present embodiment, the PLC communication band is divided into the L1 phase and the L2 phase, and communication is performed using different frequency bands between different phases. Note that the band to be divided (4 to 16, 16 to 28 kHz) is not limited to this example. For example, it is divided into 6 in order from the low range, and the L1 phase uses 4 to 8 kHz, 12 to 16 kHz, and 20 to 24 kHz, and the L2 phase uses 8 to 12 kHz, 16 to 20 kHz, and 24 to 28 kHz. It is also possible.

ＰＬＣ中継器５は、Ｌ１送受信部５１、Ｌ２送受信部５２、通信データ管理部５３、ＣＰＵ５４、Ｌ１管理部５５、およびＬ２管理部５６を備えている。   The PLC repeater 5 includes an L1 transmission / reception unit 51, an L2 transmission / reception unit 52, a communication data management unit 53, a CPU 54, an L1 management unit 55, and an L2 management unit 56.

ＣＰＵ５４は、ＰＬＣ中継器５の各構成部を統括的に制御する。   The CPU 54 comprehensively controls each component of the PLC repeater 5.

Ｌ１送受信部５１は、Ｌ１相およびＮ相での通信を行うものであり、Ｌ１相およびＮ相の搬送波からＰＬＣ機器６が出力した重畳データを復号する。復号したデータは通信データ管理部５３に入力される。なお、ＰＬＣ機器６とＰＬＣ中継器５は、Ｌ１相とＮ相を用いて差動通信を行うものである。   The L1 transmission / reception unit 51 performs communication in the L1 phase and the N phase, and decodes the superimposed data output from the PLC device 6 from the L1 phase and N phase carrier waves. The decrypted data is input to the communication data management unit 53. The PLC device 6 and the PLC repeater 5 perform differential communication using the L1 phase and the N phase.

Ｌ１管理部５５は、Ｌ１送受信部５１が使用する周波数帯域の設定を行う。また、Ｌ１相に接続されているＰＬＣ機器との接続管理（通信対象となる機器の認識、暗号の管理等）を行う。同様に、Ｌ２管理部５６は、Ｌ２送受信部５２が使用する周波数帯域の設定を行い、Ｌ２相に接続されているＰＬＣ機器との接続管理を行う。   The L1 management unit 55 sets a frequency band used by the L1 transmission / reception unit 51. In addition, connection management with a PLC device connected to the L1 phase (recognition of a communication target device, encryption management, etc.) is performed. Similarly, the L2 management unit 56 sets a frequency band used by the L2 transmission / reception unit 52 and manages connection with a PLC device connected to the L2 phase.

通信データ管理部５３は、Ｌ１送受信部５１から入力されたデータをＬ２送受信部５２に転送する。   The communication data management unit 53 transfers the data input from the L1 transmission / reception unit 51 to the L2 transmission / reception unit 52.

Ｌ２送受信部５２は、Ｌ２相およびＮ相での通信を行うものであり、通信データ管理部５３から転送されたデータをＬ２相およびＮ相の搬送波に重畳して（１６〜２８ｋＨｚで）出力する。この重畳データがＰＬＣ機器７に送信され、ＰＬＣ機器６からＰＬＣ機器７にデータが送信される。なお、ＰＬＣ機器７とＰＬＣ中継器５においても、Ｌ２相とＮ相で差動通信を行うものである。   The L2 transmission / reception unit 52 performs communication in the L2 phase and the N phase, and superimposes the data transferred from the communication data management unit 53 on the L2 phase and N phase carrier waves (at 16 to 28 kHz). . This superimposed data is transmitted to the PLC device 7, and the data is transmitted from the PLC device 6 to the PLC device 7. Note that the PLC device 7 and the PLC repeater 5 also perform differential communication in the L2 phase and the N phase.

また、Ｌ２送受信部５２は、Ｌ２相およびＮ相の搬送波からＰＬＣ機器７が出力した重畳データを復号し、復号したデータを通信データ管理部５３に入力する。通信データ管理部５３は、Ｌ２送受信部５２から入力されたデータをＬ１送受信部５１に転送する。   Further, the L2 transmission / reception unit 52 decodes the superimposed data output from the PLC device 7 from the L2 phase and N phase carrier waves, and inputs the decoded data to the communication data management unit 53. The communication data management unit 53 transfers the data input from the L2 transmission / reception unit 52 to the L1 transmission / reception unit 51.

Ｌ１送受信部５１は、通信データ管理部５３から転送されたデータをＬ１相およびＮ相の搬送波に重畳して（４〜１６ｋＨｚで）出力する。この重畳データがＰＬＣ機器６に送信され、ＰＬＣ機器７からＰＬＣ機器６にデータが送信される。   The L1 transmission / reception unit 51 superimposes the data transferred from the communication data management unit 53 on the L1 phase and N phase carrier waves (at 4 to 16 kHz). This superimposed data is transmitted to the PLC device 6, and the data is transmitted from the PLC device 7 to the PLC device 6.

ここで、本実施形態のＰＬＣ機器６およびＰＬＣ機器７は、それぞれ異なる帯域の周波数で通信を行うため、互いのＮ相の電力線に出力した搬送波が干渉することがない。   Here, since the PLC device 6 and the PLC device 7 of the present embodiment perform communication at frequencies in different bands, the carrier waves output to the N-phase power lines do not interfere with each other.

すなわち、本実施形態のＰＬＣネットワークシステムは、異相間で通信周波数帯域を分割し、それぞれ異なる帯域で通信を行うため、Ｎ相の電力線で搬送波が干渉することがなく、同相間と同じように安定した通信を行うことができるものである。また、ＰＬＣ機器６は、ＰＬＣ中継器５とＬ１相およびＮ相を用いて差動通信を行い、ＰＬＣ機器７は、ＰＬＣ中継器５とＬ２相およびＮ相を用いて差動通信を行うため、２本の電力線の長さが大きく異なることがない。そのため、同相間と同じように安定した差動通信を行うことができ、通信速度が著しく低下して不安定になることがない。   That is, the PLC network system according to the present embodiment divides the communication frequency band between different phases and performs communication in different bands, so that the carrier wave does not interfere with the N-phase power line and is stable as in the same phase. Communication can be performed. In addition, the PLC device 6 performs differential communication using the PLC relay 5 with the L1 phase and the N phase, and the PLC device 7 performs differential communication with the PLC relay 5 using the L2 phase and the N phase. The lengths of the two power lines are not greatly different. Therefore, stable differential communication can be performed in the same manner as in the same phase, and the communication speed does not significantly decrease and become unstable.

また、ＰＬＣの通信可能距離を２００ｍとした場合、本実施形態のＰＬＣネットワークシステムでは、ＰＬＣ機器６とＰＬＣ中継器５の通信可能距離が２００ｍであり、同様に、ＰＬＣ機器７とＰＬＣ中継器５の通信可能距離が２００ｍである。よって、最大で４００ｍの通信可能距離を確保することができ、従来と比較して、通信可能距離が短くなるということもない。   Further, when the communicable distance of the PLC is 200 m, in the PLC network system of the present embodiment, the communicable distance between the PLC device 6 and the PLC relay 5 is 200 m. Similarly, the PLC device 7 and the PLC relay 5 The communicable distance is 200 m. Therefore, a communicable distance of up to 400 m can be secured, and the communicable distance is not shortened compared to the conventional one.

なお、各ＰＬＣ機器およびＰＬＣ中継器に、使用する帯域を設定する設定部（スイッチ等のユーザインタフェス）を設けることも可能である。この場合、ユーザがこの設定部を用いて各ＰＬＣ機器の使用帯域を設定することができる。例えば、Ｌ１相に接続されるＰＬＣ機器を全て４〜１６ｋＨｚに設定し、Ｌ２相に接続されるＰＬＣ機器を全て１６〜２８ｋＨｚに設定する。また、異相間で通信を行う必要がない場合、全帯域（４〜２８ｋＨｚ）で通信を行うように設定することも可能である。   Each PLC device and PLC repeater can be provided with a setting unit (a user interface such as a switch) for setting a band to be used. In this case, the user can set the use band of each PLC device using the setting unit. For example, all PLC devices connected to the L1 phase are set to 4 to 16 kHz, and all PLC devices connected to the L2 phase are set to 16 to 28 kHz. Moreover, when it is not necessary to perform communication between different phases, it is also possible to set to perform communication in the entire band (4 to 28 kHz).

従来のＰＬＣ中継器の構成を示すブロック図である。It is a block diagram which shows the structure of the conventional PLC repeater. 従来のＰＬＣ中継器の構成を示すブロック図である。It is a block diagram which shows the structure of the conventional PLC repeater. 従来のＰＬＣ中継器の構成を示すブロック図である。It is a block diagram which shows the structure of the conventional PLC repeater. 本発明の実施形態に係るＰＬＣ中継器の構成を示すブロック図である。It is a block diagram which shows the structure of the PLC repeater which concerns on embodiment of this invention.

符号の説明Explanation of symbols

５−ＰＬＣ中継器
６，７−ＰＬＣ機器 5-PLC repeater 6, 7-PLC equipment

Claims (3)

電力線の異相間に接続されるＰＬＣ中継器であって、
通信帯域を複数に分割し、各相で異なる帯域でＰＬＣ機器との通信を行う複数の送受信部と、
前記複数の送受信部の一方から受信したデータを復号し、受信した側の通信帯域と異なる帯域で他方の送受信部に出力する周波数変換手段と、
を備えたＰＬＣ中継器。 A PLC repeater connected between different phases of the power line,
A plurality of transmission / reception units that divide a communication band into a plurality of parts and communicate with PLC devices in different bands in each phase;
Decoding data received from one of the plurality of transmission / reception units, frequency conversion means for outputting to the other transmission / reception unit in a band different from the communication band on the receiving side;
PLC repeater with それぞれ異なる相の電力線に接続される複数のＰＬＣ機器と、電力線の異相間に接続されるＰＬＣ中継器と、からなるＰＬＣネットワークシステムであって、
前記複数のＰＬＣ機器は、
それぞれ異なる帯域で通信を行う通信部を備え、
前記ＰＬＣ中継器は、
通信帯域を複数に分割し、各相で異なる帯域でＰＬＣ機器との通信を行う複数の送受信部と、
前記複数の送受信部の一方から受信したデータを復号し、周波数を変換して他方の送受信部に出力する周波数変換手段と、
を備えたことを特徴とするＰＬＣネットワークシステム。 A PLC network system comprising a plurality of PLC devices connected to different phase power lines, and a PLC repeater connected between different phases of the power lines,
The plurality of PLC devices are:
Each has a communication unit that communicates in different bands,
The PLC repeater is
A plurality of transmission / reception units that divide a communication band into a plurality of parts and communicate with PLC devices in different bands in each phase;
Decoding data received from one of the plurality of transmission / reception units, frequency conversion means for converting the frequency and outputting to the other transmission / reception unit;
A PLC network system comprising: 請求項２のＰＬＣネットワークシステムにおいて用いられるＰＬＣ機器。   A PLC device used in the PLC network system according to claim 2.
JP2008185256A 2008-07-16 2008-07-16 Plc repeater, plc network system, and plc equipment Pending JP2010028316A (en)

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