JPH06252808A - Distribution line carrier communication method and repeater - Google Patents

Distribution line carrier communication method and repeater

Info

Publication number
JPH06252808A
JPH06252808A JP4096293A JP4096293A JPH06252808A JP H06252808 A JPH06252808 A JP H06252808A JP 4096293 A JP4096293 A JP 4096293A JP 4096293 A JP4096293 A JP 4096293A JP H06252808 A JPH06252808 A JP H06252808A
Authority
JP
Japan
Prior art keywords
command signal
distribution line
time
relay
power distribution
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
JP4096293A
Other languages
Japanese (ja)
Inventor
Kazuyuki Tanaka
一行 田中
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP4096293A priority Critical patent/JPH06252808A/en
Publication of JPH06252808A publication Critical patent/JPH06252808A/en
Withdrawn legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE:To eliminate disable communication caused by a leaked communication signal between different distribution lines via an earth without changing a frequency of the communication signal between the different distribution lines. CONSTITUTION:When a simultaneous command signal is sent simultaneously from a center equipment 1 to repeaters 2-1-2-3, since the repeater 2-1 sends the received simultaneous command signal to a distribution line 5-1 immediately, terminal equipments 3-1-3-4 immediately activate hot water supply devices 6-1-6-4. However, after the repeater 2-2 delays the received command signal by one minute, since the signal is sent to a distribution line 5-2, even when the simultaneous command signal of the distribution lines 5-1-5-3 is leaked to other distribution lines via an earth at a neutral point of transformers 4-1-4-3, it is prevented that signals are superimposed and congestion is caused.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は配電線を用いて各種情報
を伝送する配電線搬送通信に係わり、特に一斉指令を中
継する際の配電線搬送通信方法及び中継装置の構成に関
する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a distribution line carrier communication for transmitting various kinds of information using a distribution line, and more particularly to a structure of a distribution line carrier communication method and a relay device for relaying a simultaneous command.

【0002】[0002]

【従来の技術】配電線路を通信信号の伝送路とする配電
線搬送通信システムは、図4に示すように各種指令を送
信したり、或いは端末からの情報を収集するセンタ装置
1と、このセンタ装置1から送信された指令信号を受信
した後に、配電線路上に送出する中継装置2−1〜2−
3と、配電線路上に接続されている複数の端末装置3−
1〜3−nで構成されている。このような配電線搬送通
信システムでは端末装置3の情報をセンタ装置1側で読
むためのポーリングによる通信と、センタ装置1から全
ての端末装置3に同一の指令を一斉に与える一斉指令通
信とがある。この一斉指令通信には、端末装置が備えて
いる時計の時刻修正や、前記端末装置に接続されている
例えばエアーコンディショナーや電気温水器等の負荷を
一斉にオン、オフする負荷制御等がある。
2. Description of the Related Art A distribution line carrier communication system using a distribution line as a communication signal transmission line, as shown in FIG. 4, transmits a variety of commands or collects information from terminals, and a center device 1 and this center device. After receiving the command signal transmitted from the device 1, the relay devices 2-1 to 2-which send the command signal to the distribution line.
3 and a plurality of terminal devices 3 connected to the distribution line 3-
1 to 3-n. In such a distribution line carrier communication system, communication by polling for reading the information of the terminal device 3 on the side of the center device 1 and simultaneous command communication for giving the same command from the center device 1 to all the terminal devices 3 all at once. is there. This simultaneous command communication includes time adjustment of a clock provided in the terminal device, load control for simultaneously turning on and off loads such as an air conditioner and an electric water heater connected to the terminal device.

【0003】ところで配電線搬送通信では、配電線を伝
送路としているので以下に述べるような不都合がある。
配電線路は図5に示した変圧トランス4を出てから後、
他の配電線路と交わることはないが、各変圧トランス4
の中点は図5のイに示すようにアースされている。この
ため、例えば図5に示した変圧トランス4−1、4−2
から端末装置側の配電線路は直接接続されることはない
が、アースを通して変圧トランス4−1、4−2の中点
が接続されることになる。このため、中継装置2−1側
の配電線路と中継装置2−2側の配電線路間で前記アー
スを通して通信信号の漏洩が発生する。このような従来
の配電線搬送通信システムでは、センタ装置1から図6
(A)に示すような一斉指令信号が各中継装置2−1、
2−3に同時に送信されると、各中継装置2−1と2−
3は受信した前記一斉指令信号を図6(B)、(C)、
(D)に示すように同時に配電線路上に送出する。
By the way, in the distribution line carrier communication, since the distribution line is used as a transmission line, there are inconveniences as described below.
The distribution line goes out from the transformer 4 shown in FIG.
It does not intersect with other distribution lines, but each transformer transformer 4
The middle point is grounded as shown in FIG. Therefore, for example, the transformer transformers 4-1 and 4-2 shown in FIG.
Therefore, the distribution line on the terminal device side is not directly connected, but the middle point of the transformer transformers 4-1 and 4-2 is connected through the ground. Therefore, a communication signal leaks through the ground between the power distribution line on the relay device 2-1 side and the power distribution line on the relay device 2-2 side. In such a conventional distribution line carrier communication system, from the center device 1 to FIG.
The simultaneous command signal as shown in FIG.
When simultaneously transmitted to 2-3, each relay device 2-1 and 2-
3 shows the received simultaneous command signal as shown in FIGS.
As shown in (D), the signals are simultaneously sent to the distribution line.

【0004】しかし、上記した如く異なる配電線路間で
は通信信号の漏洩があるため、一斉指令信号がこの漏洩
により互いに重なりあって輻輳が生じ、このため、前記
一斉指令信号を端末装置3は受信することができなくな
ってしまい、通信が不能になる恐れがあった。ここで、
前記輻輳について述べておく。センタ装置1から同時に
一斉指令信号が中継装置2−1〜2−3に出されても、
センタ装置1と各中継装置を接続する回線状況や、中継
装置の下流側の配電線路の状況によって、上記した変圧
トランス4のアースを通して漏洩する各一斉指令信号の
位相は異なったものとなるため、前記一斉指令信号が重
なり合うことによって信号波形が変形してしまったり、
前記位相が180度異なってしまうと、信号波形が消滅
してしまい、このような現象が起こることを輻輳とい
う。
However, since communication signals leak between different power distribution lines as described above, the simultaneous command signals overlap each other due to the leakage and congestion occurs. Therefore, the terminal device 3 receives the simultaneous command signals. There is a risk that communication will be disabled due to the inability to do so. here,
The congestion will be described. Even if the central device 1 simultaneously outputs simultaneous command signals to the relay devices 2-1 to 2-3,
Since the phase of each simultaneous command signal leaking through the ground of the transformer transformer 4 described above differs depending on the condition of the line connecting the center device 1 and each relay device and the condition of the distribution line on the downstream side of the relay device. The signal waveform may be deformed due to the overlap of the simultaneous command signals,
If the phases differ by 180 degrees, the signal waveform disappears, and such a phenomenon occurs is called congestion.

【0005】そこで上記のような不都合を解決するため
に、従来は中継装置から出力される通信信号の周波数を
配電線路毎に変えて、上記した変圧トランスの中点アー
スを介して通信信号が漏洩しても、お互いに悪影響がな
いようにしている。しかし、このような方法を採ると、
配電線路毎に通信信号の周波数が異なるため、配電線路
に接続されている中継装置や端末装置の送受信周波数を
配電線路毎に合わせておかなければならなくなり、ある
配電線路の中継装置や端末装置を他の配電線路に付け替
えることが容易にできなくなるという欠点があった。
又、上記のように通信信号が異なる配電線路間で中継装
置や端末装置を付け替えるには、中継装置や端末装置の
受信器に受信周波数切替装置を付けなければならず、こ
の分、配電線搬送通信システムのコストが高くなってし
まうという欠点もあった。
Therefore, in order to solve the above-mentioned inconvenience, conventionally, the frequency of the communication signal output from the relay device is changed for each distribution line, and the communication signal leaks through the above-mentioned midpoint ground of the transformer. Even so, we try not to adversely affect each other. However, if such a method is adopted,
Since the frequency of the communication signal is different for each distribution line, the transmission / reception frequency of the relay device or terminal device connected to the distribution line must be adjusted for each distribution line. It has a drawback that it cannot be easily switched to another distribution line.
In addition, as described above, in order to change the relay device or the terminal device between the distribution lines having different communication signals, the receiver of the relay device or the terminal device needs to be provided with the reception frequency switching device. There is also a drawback that the cost of the communication system becomes high.

【0006】[0006]

【発明が解決しようとする課題】上記のように従来の配
電線搬送通信システムでは、異なる配電線路間の通信信
号が変圧トランスの中点アースを介して漏洩してしまう
ため、センタ装置から一斉指令信号を受けた中継装置が
各配電線路上に前記一斉指令を同時に送出すると、この
一斉指令信号が前記アースを介して重なり合い、これに
よる輻輳が生じて通信が不能になってしまうという欠点
があった。この欠点を回避するために、異なる配電線路
毎に通信信号の周波数を変えればよいが、これには各配
電線路毎に中継装置や端末装置の送受信周波数を異なる
ものとしなければならず、従って中継装置や端末装置を
異なる配電線間で容易に移設できなくなってしまうとい
う欠点があった。そこで、異なる通信周波数の配電線路
間で中継装置や端末装置を移設できるようにするため
に、中継装置や端末装置に周波数切替装置を付けると、
この分、中継装置や端末装置のコストが高くなってしま
うという欠点があった。
As described above, in the conventional distribution line carrier communication system, since the communication signal between different distribution lines leaks through the midpoint earth of the transformer, the center device sends a simultaneous command. When the relay device which receives the signal simultaneously sends out the simultaneous command on each power distribution line, the simultaneous command signals are overlapped via the ground, and there is a drawback in that congestion occurs and communication is disabled. . In order to avoid this drawback, the frequency of the communication signal may be changed for each different distribution line, but this requires that the transmission / reception frequency of the relay device or the terminal device be different for each distribution line. However, there is a drawback in that devices and terminal devices cannot be easily transferred between different distribution lines. Therefore, if a frequency switching device is attached to the relay device or the terminal device in order to enable the relay device or the terminal device to be relocated between the distribution lines of different communication frequencies,
As a result, there is a drawback that the cost of the relay device and the terminal device increases.

【0007】そこで本発明は上記の欠点を除去し、異な
る配電線路間で通信信号の周波数を変えることなく、異
なる配電線路間の通信信号がアースを介して漏洩するこ
とによって生じる通信不能をなくすことができる配電線
搬送通信方法及び中継装置を提供することを目的として
いる。
Therefore, the present invention eliminates the above-mentioned drawbacks and eliminates the incommunicability caused by the leakage of the communication signal between the different distribution lines through the ground without changing the frequency of the communication signal between the different distribution lines. It is an object of the present invention to provide a distribution line communication method and a relay device capable of performing the above.

【0008】[0008]

【課題を解決するための手段】本発明はセンタ装置から
送信された一斉指令信号を複数の中継装置が中継して各
配電線路上に送出する配電線搬送通信方法において、前
記各中継装置から前記各配電線路上に送出される前記一
斉指令信号の送出時間を異ならせた構成を有する。
SUMMARY OF THE INVENTION The present invention is a distribution line carrier communication method in which a plurality of relay devices relay a simultaneous command signal transmitted from a center device and send out to each power distribution line. It has a configuration in which the sending time of the simultaneous command signal sent to each distribution line is different.

【0009】他の構成として、本発明はセンタ装置から
送信された時刻修正指令信号を複数の中継装置が中継し
て各配電線路上に送出する配電線搬送通信方法におい
て、各中継装置により中継される前記時刻修正指令信号
の修正時刻を互いに異なるように変更し、且つ前記各中
継装置により変更された時刻修正指令信号の前記各配電
線路上への送出時刻を変更後の時刻修正指令信号が示す
修正時刻に合わせて互いに異ならせた構成を有する。
As another configuration, the present invention is a distribution line carrier communication method in which a plurality of relay devices relays a time adjustment command signal transmitted from a center device and sends the time correction command signal to each power distribution line. The time correction command signal after changing the correction time of the time correction command signal to be different from each other, and the sending time of the time correction command signal changed by each relay device to each of the distribution lines is indicated by the time correction command signal after change. It has a different structure according to the correction time.

【0010】[0010]

【作用】本発明の配電線搬送通信方法において、複数の
中継装置はセンタ装置から受信した一斉指令信号をそれ
ぞれ異なる時間遅延して各配電線路上に送出する。これ
により、異なる配電線路上の前記一斉指令信号が漏洩に
より輻輳することがなくなる。
In the distribution line carrier communication method of the present invention, the plurality of relay devices delay the simultaneous command signals received from the center device by different times and send them to the respective distribution lines. This prevents the simultaneous command signals on different power distribution lines from congesting due to leakage.

【0011】他の構成の作用として、複数の中継装置は
センタ装置から受信した時刻修正指令信号の修正時刻を
それぞれ互いに異なるように修正した後、この修正に対
応する時間だけ遅延して前記時刻修正指令信号の各配電
線路上への送出時刻を互いに異ならせるため、これによ
り、異なる配電線路上の前記時刻修正指令信号が漏洩に
より輻輳することがなくなる。
As another function of the configuration, the plurality of relay devices correct the correction times of the time correction command signals received from the center device so that they are different from each other, and delay the time corresponding to this correction to correct the time. Since the transmission times of the command signals on the respective distribution lines are made different from each other, this prevents the time adjustment command signals on different distribution lines from congesting due to leakage.

【0012】[0012]

【実施例】以下、本発明の一実施例を図面を参照して説
明する。図1は本発明の配電線搬送通信方法及び中継装
置を適用した配電線通信システムの一実施例を示したブ
ロック図である。1は端末装置3へ各種指令を送信する
センタ装置、2−1〜2−3はセンタ装置1から受信し
た通信信号を中継して配電線路5−1〜5−3上に送出
する中継装置、3−1〜3−8は配電線路5−1、5−
2に接続されている端末装置、4−1〜4−3は変圧ト
ランス、5−1〜5−3は変圧トランス4−1〜4−3
から出る配電線路、6−1〜6−8は端末装置3−1〜
3−8に接続された電気温水器である。尚、センタ装置
1と各中継装置2−1〜2−3は公衆網や専用回線等の
通信回線にて接続されているものとする。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of a distribution line communication system to which a distribution line carrier communication method and a relay device of the present invention are applied. Reference numeral 1 is a center device for transmitting various commands to the terminal device 3, 2-1 to 2-3 are relay devices for relaying communication signals received from the center device 1 and sending them to the power distribution lines 5-1 to 5-3, 3-1 to 3-8 are power distribution lines 5-1 and 5-
2, terminal devices 4-1 to 4-3 are transformer transformers, 5-1 to 5-3 are transformer transformers 4-1 to 4-3.
The distribution lines 6-1 to 6-8 from the terminal devices 3-1 to 3-1
It is an electric water heater connected to 3-8. The center device 1 and each of the relay devices 2-1 to 2-3 are connected to each other through a communication line such as a public network or a dedicated line.

【0013】図2は図1に示した中継装置2の詳細例を
示したブロック図である。21は図示されないセンタ装
置1に対して信号を送受信する通信部、22は図示され
ない配電線路上に信号を送受信する通信部、23は中継
制御動作を行う制御部、24は受信信号を一旦格納する
メモリ部、25は中継装置にアドレスを設定するアドレ
ス設定部、26は時刻を計時するタイマである。
FIG. 2 is a block diagram showing a detailed example of the relay device 2 shown in FIG. Reference numeral 21 denotes a communication unit that transmits and receives signals to and from the center device 1 (not shown), 22 denotes a communication unit that transmits and receives signals to and from a power distribution line (not shown), 23 denotes a control unit that performs relay control operation, and 24 temporarily stores received signals. A memory unit, 25 is an address setting unit for setting an address in the relay device, and 26 is a timer for measuring time.

【0014】次に本実施例の動作について説明する。セ
ンタ装置1から電気温水器6を一斉にオンさせるための
一斉指令信号が図3(A)に示すように送信されると、
この一斉指令信号は通信回線を通して中継装置2−1〜
2−3に送信され、中継装置2−1〜2−3は前記一斉
指令信号を同時に受信する。ここで、中継装置2−1〜
2−3のアドレスを1、2、3、4とし、一斉指令信号
が端末装置に受信されるまでの時間を2分以内であると
する。又、前記アドレスは図2に示した各中継装置2の
アドレス設定部25に予め設定されているものとし、且
つ設定されたアドレス対応で一斉指令信号の送出遅延時
間が設定されているものとする。
Next, the operation of this embodiment will be described. When a central command signal for turning on the electric water heaters 6 at the same time is transmitted from the center device 1 as shown in FIG. 3 (A),
This simultaneous command signal is transmitted through the communication line to the relay devices 2-1 to 2-1.
The relay devices 2-1 to 2-3 are transmitted to the router 2-3 and simultaneously receive the simultaneous command signal. Here, the relay devices 2-1 to 2-1
It is assumed that the addresses 2-3 are 1, 2, 3, and 4 and that the time until the simultaneous command signal is received by the terminal device is within 2 minutes. It is also assumed that the address is preset in the address setting unit 25 of each relay device 2 shown in FIG. 2, and that the transmission delay time of the simultaneous command signal is set in correspondence with the set address. .

【0015】例えば中継装置2−1はアドレス1が設定
されて、且つ一斉指令信号の送出遅延時間が0分に設定
されているものとする。従って中継装置2−1は上記の
ようにセンタ装置1からの一斉指令信号を通信部21に
より受信すると、制御部23は直ちにこの受信信号を通
信部22から図2(B)に示すように配電線路5−1上
に送出する。一方、中継装置2−2はアドレス2が設定
されており、且つ一斉指令信号の送出遅延時間が1分と
設定されているものとする。従って、中継装置2−2は
センタ装置1からの一斉指令信号を通信部21により受
信すると、制御部23は受信した制御信号を一旦メモリ
部24に格納した後、タイマ26を起動する。この時タ
イマ26は、アドレス設定部25により設定されている
遅延時間(1分)でタイムアップするように設定されて
いる。これにより、タイマ26は前記制御部23により
起動されてから1分後にタイムアウトし、これを制御部
23に知らせる。制御部23は前記タイマ26がタイム
アウトすると、メモリ部24に格納してある一斉指令信
号を読み出して図3(C)に示したタイミングで配電線
路5−2上に送出する。同様に、中継装置2−3にはア
ドレス3が設定されていると共に、一斉指令信号の遅延
時間として2分が設定されているため、この中継装置2
−3はセンタ装置1から一斉指令信号を受信した後、図
3(D)に示すように2分後に前記一斉指令信号を配電
線路5−3上に送出する。
For example, it is assumed that the relay device 2-1 is set to the address 1 and the transmission command signal transmission delay time is set to 0 minutes. Therefore, when the relay device 2-1 receives the simultaneous command signal from the center device 1 through the communication section 21 as described above, the control section 23 immediately receives this received signal from the communication section 22 as shown in FIG. It is sent out on the line 5-1. On the other hand, it is assumed that address 2 is set in the relay device 2-2 and the transmission delay time of the simultaneous command signal is set to 1 minute. Therefore, when the relay device 2-2 receives the simultaneous command signal from the center device 1 by the communication unit 21, the control unit 23 temporarily stores the received control signal in the memory unit 24 and then activates the timer 26. At this time, the timer 26 is set to time up with the delay time (1 minute) set by the address setting unit 25. As a result, the timer 26 times out 1 minute after being started by the control unit 23 and notifies the control unit 23 of this. When the timer 26 times out, the control unit 23 reads the simultaneous command signal stored in the memory unit 24 and sends it to the power distribution line 5-2 at the timing shown in FIG. 3 (C). Similarly, since the relay device 2-3 is set to the address 3 and the delay time of the simultaneous command signal is set to 2 minutes, this relay device 2 is set.
-3, after receiving the simultaneous command signal from the center device 1, sends the simultaneous command signal to the power distribution line 5-3 after 2 minutes as shown in FIG. 3 (D).

【0016】従って、配電線路5−1に接続されている
端末装置3−1〜3−4はセンタ装置1から一斉指令信
号が送信された直後に、前記一斉指令信号を受信し、電
気温水器6−1〜6−4をオンにする。配電線路5−2
に接続されている端末装置3−5〜3−8はセンタ装置
1から一斉指令信号が送信されてから1分後に、前記一
斉指令信号を受信し、電気温水器6−5〜6−8をオン
とする。同様に、配電線路5−3に接続されている図示
されない端末装置は前記センタ装置1から一斉指令信号
が送信されてから2分後に前記一斉指令信号を受信し
て、図示されない電気温水器をオンにする。
Therefore, the terminal devices 3-1 to 3-4 connected to the power distribution line 5-1 receive the simultaneous command signal immediately after the simultaneous command signal is transmitted from the center device 1, and the electric water heater. Turn on 6-1 to 6-4. Distribution line 5-2
The terminal devices 3-5 to 3-8, which are connected to, receive the simultaneous command signal one minute after the simultaneous command signal is transmitted from the center device 1, and turn on the electric water heaters 6-5 to 6-8. Turn on. Similarly, the terminal device (not shown) connected to the power distribution line 5-3 receives the simultaneous command signal 2 minutes after the simultaneous command signal is transmitted from the center device 1, and turns on the electric water heater (not shown). To

【0017】次に、センタ装置1からa時に時刻修正を
行う時刻修正指令信号が一斉に中継装置2−1〜2−3
に送信された場合に、中継装置2−1は受信したこの時
刻修正指令信号を直ちに配電線路5−1に送出する。こ
のため、配電線路5−1に接続されている端末装置3−
1〜3−4は電気温水器6−1〜6−4の時計をa時に
時刻修正する。一方、中継装置2−2の制御装置23は
受信した前記時刻修正指令信号をa時+1分に変更した
後、これをメモリ部24に格納して1分経つと、a時+
1分に変更した時刻修正指令信号を配電線路5−2に送
出する。これにより、配電線路5−2に接続されている
端末装置3−5〜3−8は電気温水器6−1〜6−4の
タイマをa時+1分に時刻修正する。同様に中継装置2
−3はセンタ装置1から受信した時刻修正指令信号をa
時+2分に変更し、この変更した時刻修正指令信号を2
分後に、配電線路5−3に送出する。これにより、配電
線路5−2に接続されている図示されない端末装置は図
示されない電気温水器のタイマをa時+2分に時刻修正
する。尚、端末装置2−1、2−3の制御部23は時刻
修正指令の変更時刻をアドレス設定部25に設定されて
いる前述した送出遅延時間に基づいて時刻修正指令信号
の変更を行うものとし、変更した時刻修正指令信号をメ
モリ部24に格納する。
Next, the center device 1 sends the time adjustment command signals for adjusting the time at a time all at once to the relay devices 2-1 to 2-3.
When it is transmitted to the relay device 2-1, the relay device 2-1 immediately sends the received time adjustment command signal to the power distribution line 5-1. Therefore, the terminal device 3-connected to the power distribution line 5-1
Reference numerals 1 to 3-4 correct the clocks of the electric water heaters 6-1 to 6-4 at time a. On the other hand, the control device 23 of the relay device 2-2 changes the received time adjustment command signal to a time +1 minute, stores it in the memory unit 24, and one minute later, it becomes a time +
The time adjustment command signal changed to 1 minute is sent to the power distribution line 5-2. Accordingly, the terminal devices 3-5 to 3-8 connected to the power distribution line 5-2 adjust the time of the timers of the electric water heaters 6-1 to 6-4 to a hour + 1 minute. Similarly, the relay device 2
-3 is the time correction command signal received from the center device 1
Change to the hour + 2 minutes and set the changed time adjustment command signal to 2
After a minute, it is sent to the power distribution line 5-3. As a result, the terminal device (not shown) connected to the power distribution line 5-2 adjusts the timer of the electric water heater (not shown) to a time +2 minutes. It is assumed that the control unit 23 of the terminal devices 2-1 and 2-3 changes the time adjustment command change time based on the above-mentioned transmission delay time set in the address setting unit 25. The changed time adjustment command signal is stored in the memory unit 24.

【0018】本実施例によれば、センタ装置1から一斉
に送信される一斉指令信号を各中継装置2−1〜2−3
が受信してからこの一斉指令信号を配電線路5−1〜5
−3上に送出するまでの時間を互いにずらしてあるた
め、これら一斉指令信号が各配電線路5−1〜5−3に
接続されている変圧トランス4−1〜4−3の中点アー
スを介して他の配電線路上に漏洩しても、この他の配電
線路上に一斉指令信号がないため、従来のように一斉指
令信号が重なり合って輻輳することがなくなり、通信不
能に陥ることを防止することができる。このため、配電
線通信システムを用いた通信の信頼性を向上させること
ができる。又、配電線路5−1〜5−3を伝送する信号
の周波数は同一でよく、端末装置3−1〜3−8等は容
易に異なる配電線路に移設することができると共に、中
継装置2−1〜2−3もアドレスを設定し直してやれ
ば、同様に異なる配電線路上に容易に移設でき、各装置
のコストを上昇させずに上記効果を得ることができる。
According to the present embodiment, the simultaneous command signals transmitted from the center device 1 are sent to the relay devices 2-1 to 2-3.
After receiving this simultaneous command signal, the distribution lines 5-1 to 5
Since the time until sending out to the -3 is mutually shifted, the middle point earth of the transformer transformers 4-1 to 4-3 connected to the distribution lines 5-1 to 5-3 by these simultaneous command signals is set. Even if it leaks to another power distribution line via this, there is no simultaneous command signal on this other power distribution line, so the simultaneous command signals do not overlap and become congested as in the conventional system, preventing communication failure. can do. Therefore, the reliability of communication using the distribution line communication system can be improved. The frequencies of the signals transmitted through the power distribution lines 5-1 to 5-3 may be the same, and the terminal devices 3-1 to 3-8 and the like can be easily relocated to different power distribution lines and the relay device 2- Similarly, if addresses 1-2 are also reset, they can be easily transferred to different power distribution lines, and the above effect can be obtained without increasing the cost of each device.

【0019】[0019]

【発明の効果】以上記述した如く本発明の配電線搬送通
信方法及び中継装置によれば、異なる配電線路間で通信
信号の周波数を変えることなく、異なる配電線路間の通
信信号がアースを介して漏洩することによって生じる通
信不能をなくすことができる。
As described above, according to the distribution line carrier communication method and the relay device of the present invention, the communication signal between different distribution lines can pass through the ground without changing the frequency of the communication signal between different distribution lines. It is possible to eliminate the communication failure caused by the leakage.

【図面の簡単な説明】[Brief description of drawings]

【図1】図1は本発明の配電線搬送通信方法及び中継装
置の一実施例を示したブロック図。
FIG. 1 is a block diagram showing an embodiment of a distribution line carrier communication method and a relay device of the present invention.

【図2】図1に示した中継装置の詳細例を示したブロッ
ク図。
2 is a block diagram showing a detailed example of a relay device shown in FIG.

【図3】図1に示した配電線搬送通信システムにおける
一斉指令信号送信時のタイムチャート。
FIG. 3 is a time chart when a simultaneous command signal is transmitted in the distribution line carrier communication system shown in FIG.

【図4】従来の配電線搬送通信システムの一例を示した
ブロック図。
FIG. 4 is a block diagram showing an example of a conventional distribution line carrier communication system.

【図5】従来の配電線搬送通信システムの詳細例を示し
たブロック図。
FIG. 5 is a block diagram showing a detailed example of a conventional distribution line carrier communication system.

【図6】図4、5に示した配電線搬送通信システムにお
ける一斉指令信号送信時のタイムチャート。
FIG. 6 is a time chart when transmitting a simultaneous command signal in the distribution line carrier communication system shown in FIGS.

【符号の説明】[Explanation of symbols]

1…センタ装置 2−1〜2−3
…中継装置 3−1〜3−8端末装置 4−1〜4−3
…変圧トランス 5−1〜5−3配電線路 6−1〜6−8
…電気温水器
1 ... Center device 2-1 to 2-3
... Relay device 3-1 to 3-8 Terminal device 4-1 to 4-3
... Transformer transformer 5-1 to 5-3 Distribution line 6-1 to 6-8
… Electric water heater

Claims (4)

【特許請求の範囲】[Claims] 【請求項1】 センタ装置から送信された一斉指令信号
を複数の中継装置が中継して各配電線路上に送出する配
電線搬送通信システムにおいて、前記各中継装置から前
記各配電線路上に送出される前記一斉指令信号の送出時
刻を互いに異ならせたことを特徴とする配電線搬送通信
方法。
1. In a distribution line carrier communication system in which a plurality of relay devices relay a simultaneous command signal transmitted from a center device and send it to each power distribution line, the relay device sends it to each power distribution line. The transmission method of the distribution line carrier is characterized in that the sending times of the simultaneous command signal are different from each other.
【請求項2】 センタ装置から送信された時刻修正指令
信号を複数の中継装置が中継して各配電線路上に送出す
る配電線搬送通信システムにおいて、各中継装置により
中継される前記時刻修正指令信号の修正時刻を互いに異
なるように変更し、且つ前記各中継装置により変更され
た時刻修正指令信号の前記各配電線路上への送出時刻を
変更後の時刻修正指令信号が示す修正時刻に合わせて互
いに異ならせたことを特徴とする配電線搬送通信方法。
2. A time adjustment command signal relayed by each relay device in a distribution line carrier communication system in which a plurality of relay devices relays the time correction command signal transmitted from the center device and sends out to each power distribution line. Of the time adjustment command signal changed by each of the relay devices to each other in accordance with the correction time indicated by the time adjustment command signal after the change. A distribution line carrier communication method characterized by being different.
【請求項3】 センタ装置から送信された信号を中継し
て配電線路上に送出する中継装置において、前記センタ
装置から送信されてくる一斉指令信号を受信して一旦記
憶する記憶手段と、前記一斉指令信号を受信してから予
め設定された時間を計時する計時手段と、この計時手段
により前記設定された時間が計時し終わると、前記記憶
手段に記憶されている一斉指令信号を読み出して前記配
電線路上に送出する送信手段とを具備したことを特徴と
する中継装置。
3. A relay device for relaying a signal transmitted from a center device and transmitting the signal to a power distribution line, a storage means for receiving and temporarily storing a broadcast command signal transmitted from the center device, and the broadcast device. After the command signal is received, a preset time is measured, and when the preset time is finished by the clock means, the simultaneous command signal stored in the storage means is read out and the distribution is performed. A relay device comprising: a transmission unit that transmits the signal on an electric line.
【請求項4】 センタ装置から送信された信号を中継し
て配電線路上に送出する中継装置において、前記センタ
装置から送信されてくる時刻修正指令信号の修正時刻を
予め設定された所定時間だけ変更する修正手段と、この
修正手段によって変更された時刻修正指令信号を一旦記
憶する記憶手段と、前記時刻修正指令信号を受信してか
ら前記所定時間を計時する計時手段と、この計時手段に
より前記所定時間が計時し終わると前記記憶手段に記憶
されている変更後の時刻修正信号を読み出して前記配電
線路上に送出する送信手段とを具備したことを特徴とす
る中継装置。
4. In a relay device for relaying a signal transmitted from a center device and sending it out on a power distribution line, the correction time of a time correction command signal transmitted from said center device is changed only by a preset predetermined time. Adjusting means, a storage means for temporarily storing the time adjustment command signal changed by the correction means, a time measuring means for measuring the predetermined time after receiving the time adjustment command signal, and the predetermined time by the time measuring means. A relay device comprising: a transmission unit that reads out the changed time correction signal stored in the storage unit and sends the time correction signal to the power distribution line when the time has been measured.
JP4096293A 1993-03-02 1993-03-02 Distribution line carrier communication method and repeater Withdrawn JPH06252808A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4096293A JPH06252808A (en) 1993-03-02 1993-03-02 Distribution line carrier communication method and repeater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4096293A JPH06252808A (en) 1993-03-02 1993-03-02 Distribution line carrier communication method and repeater

Publications (1)

Publication Number Publication Date
JPH06252808A true JPH06252808A (en) 1994-09-09

Family

ID=12595117

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4096293A Withdrawn JPH06252808A (en) 1993-03-02 1993-03-02 Distribution line carrier communication method and repeater

Country Status (1)

Country Link
JP (1) JPH06252808A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008108169A (en) * 2006-10-27 2008-05-08 Matsushita Electric Ind Co Ltd Gas shut-off device
JP2008108168A (en) * 2006-10-27 2008-05-08 Matsushita Electric Ind Co Ltd Gas shut-off device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008108169A (en) * 2006-10-27 2008-05-08 Matsushita Electric Ind Co Ltd Gas shut-off device
JP2008108168A (en) * 2006-10-27 2008-05-08 Matsushita Electric Ind Co Ltd Gas shut-off device

Similar Documents

Publication Publication Date Title
US4065763A (en) Distribution network power line communication system
US4696052A (en) Simulcast transmitter apparatus having automatic synchronization capability
JP2615753B2 (en) Automatic phase adjustment method
US3456191A (en) Level control system for a communication system of the type in which a pilot signal is cotransmitted with information signals between an initial station and a final station
JPH06252808A (en) Distribution line carrier communication method and repeater
US6621369B2 (en) Method and system for determining transmission path delay
JPS58201440A (en) Loop mode transmission system
KR100367592B1 (en) Adaptive type power line communication apparatus and method
JP2002244937A (en) Clocking system utilizing lan
JP2766226B2 (en) Delay time adjustment method for mobile communication systems
JP2924501B2 (en) Clock device
JP2762653B2 (en) Automatic phase adjustment method in wireless calling system
JPS6359636B2 (en)
JP2858532B2 (en) Earth station site diversity system for satellite communications
JPH0955698A (en) Phase compensation system for multiple address transmission system
JPH0215730A (en) Medium wave radio synchronizing broadcasting device
JPH06334566A (en) Switching method without short break
JPH0336342B2 (en)
RU2173026C2 (en) Circuit delaying reference signal of synchronization from receiver of global satellite system of radio positioning, method of simultaneous transmission of search call
JPH05167480A (en) Transmitter in multiple address communication system
JPH03270329A (en) Satellite communication system
KR100761314B1 (en) Delay control device of forward and reverse signal between wibro radio accesss system and repeater and the method thereof
JPH0297133A (en) Phase adjusting device
JPH0244178B2 (en)
JPH10229428A (en) Communication control system

Legal Events

Date Code Title Description
A300 Withdrawal of application because of no request for examination

Free format text: JAPANESE INTERMEDIATE CODE: A300

Effective date: 20000509