JPH06132913A - Remote monitoring system - Google Patents

Abstract

PURPOSE:To reduce the load of a monitor station and to improve the processing efficiency in a remote monitoring system which monitors the monitor station and plural monitored stations by a single carrier signal by limiting the information sent from the monitored stations to only the information on the primary fault and by preventing the secondary fault information sent from the monitored stations from concentrating in the monitor station. CONSTITUTION:A monitor station 6 contains an information transmission request circuit 1 which sends the requests to the monitored stations 7A and 7B for transmission of the information and an answer signal receiver circuit 2 which receives the answer signals from both stations 7A and 7B. Meanwhile the stations 7A and 7B contain the means which intercept the response signals sent to the station 6 from other monitored stations, the response signal receiver circuits 3A and 3B which receive the information transmission requests and the response signals and have the means that receive the transmission request signals from the station 6, and the fault information identifying circuits 5A and 5B which decide whether the faults occurred at each its own station are identical with the direct primary faults or the secondary faults caused by the faults of other stations and send only the primary fault information to the station 6.

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、遠方監視方式に関し、
特に監視局と複数の被監視局とが通信回線により並列接
続されている場合に、一つの搬送波信号を用いて複数の
被監視局を監視する遠方監視方式に関する。BACKGROUND OF THE INVENTION The present invention relates to a remote monitoring system,
In particular, the present invention relates to a remote monitoring method for monitoring a plurality of monitored stations using one carrier signal when the monitoring station and a plurality of monitored stations are connected in parallel by a communication line.

【０００２】[0002]

【従来の技術】従来、この種の遠方監視方式は、図２に
示すように、監視局Ａが通信回線Ｆに並列接続された被
監視局Ｂ〜Ｎを一つの搬送波信号を用いて順次監視して
いる。ここで監視局６は図２に示すように、被監視局７
Ｃ，７Ｄに対し情報送信要求回路１により１つの搬送波
信号に変調して送信要求を送出する。また、被監視局７
Ｃは図２に示すように、通信回線８を介して、この搬送
波信号を情報送信要求受信回路３Ｃにより受信する。こ
の受信信号により障害情報回路５Ｃは、制御信号１１を
受け、自局および他局による通信回線等の共通障害情報
を含めて情報信号１２を送出し、応答信号送信回路４Ｃ
を通して監視局６の応答信号受信回路に伝送する。次に
被監視局７Ｄも被監視局７Ｃと全く同様の監視情報の送
信を行っていた。2. Description of the Related Art Conventionally, in this type of remote monitoring system, as shown in FIG. 2, a monitoring station A sequentially monitors monitored stations B to N connected in parallel to a communication line F using one carrier signal. is doing. Here, the monitoring station 6, as shown in FIG.
The information transmission request circuit 1 modulates C and 7D into one carrier signal and transmits the transmission request. Also, the monitored station 7
As shown in FIG. 2, C receives this carrier wave signal by the information transmission request receiving circuit 3C via the communication line 8. The failure information circuit 5C receives the control signal 11 by this received signal, sends out the information signal 12 including common failure information of the communication line of the own station and other stations, and the response signal transmission circuit 4C.
To the response signal receiving circuit of the monitoring station 6. Next, the monitored station 7D also transmitted the same monitoring information as the monitored station 7C.

【０００３】[0003]

【発明が解決しようとする課題】上述した従来の遠方監
視方式は、被監視局では監視局の情報送信要求に対し
て、自局で検出されたすべての障害情報を応答している
ので、二次障害を含む各被監視局の障害情報が監視局に
集中するために監視局の負荷が大きくなる欠点がある。
従って障害の主原因判定を行いその局に固有の一次障害
を判別することが極めて困難であるという欠点があっ
た。In the conventional remote monitoring system described above, since the monitored station responds to all the fault information detected by itself in response to the information transmission request from the monitoring station, Since the fault information of each monitored station including the next fault is concentrated on the monitoring station, the load on the monitoring station becomes large.
Therefore, there is a drawback in that it is extremely difficult to determine the main cause of the failure and determine the primary failure unique to the station.

【０００４】[0004]

【課題を解決するための手段】本発明の遠方監視方式
は、監視局が通信回線に並列接続された複数の被監視局
を一つの搬送波信号を使用して監視する遠方監視方式に
おいて、前記監視局は被監視局に対して情報送信要求を
送信する情報送信要求送信回路と、前記被監視局からの
応答信号を受信する応答信号受信回路とを有し、前記被
監視局は他の被監視局から監視局への応答信号を傍受す
る手段および前記監視局からの送信要求信号を受信する
手段を有する情報送信要求及び応答信号受信回路と、自
局で発生した障害が直接的な一次障害か、他局の障害に
より発生した二次障害かを判別し、一次的障害情報のみ
前記監視局へ送出する障害情報識別回路とを有する。The remote monitoring system of the present invention is a remote monitoring system in which a monitoring station monitors a plurality of monitored stations connected in parallel to a communication line by using one carrier signal. The station has an information transmission request transmission circuit for transmitting an information transmission request to the monitored station and a response signal receiving circuit for receiving a response signal from the monitored station, and the monitored station is another monitored station. An information transmission request and response signal receiving circuit having means for intercepting a response signal from a station to a monitoring station and means for receiving a transmission request signal from the monitoring station, and whether the fault occurring at the local station is a direct primary fault. And a failure information identification circuit that determines whether the failure is a secondary failure caused by a failure of another station and sends only the primary failure information to the monitoring station.

【０００５】[0005]

【実施例】次に本発明について図面を参照して説明す
る。図１は本発明の一実施例のブロック図である。図１
において監視局６は情報送信要求送信回路１からすべて
の被監視局に対して順次情報送出要求を送信し、それに
対する被監視局（図１では７Ａ，７Ｂ）からの応答信号
を応答信号受信回路２で受信することにより、被監視局
の障害情報を得る。一方、例えば被監視局７Ｂでは、情
報送信要求及び応答信号受信回路３Ｂで他の被監視局
（例えば７Ａ）から監視局６への応答信号を常に傍受し
ているので、他被監視局の障害情報を得る。この情報に
より障害情報識別回路５Ｂで自局で収集して監視情報か
ら一次的障害情報を識別している。すなわち、被監視局
７Ａが既に送出している通信回線８等の共通障害等を識
別して自局固有の障害情報を識別している。被監視局７
Ｂが情報送信要求及び応答信号受信回路３Ｂで、監視局
６から自局へ情報送信要求を受信した場合に、前述の自
局固有の一次的障害情報のみを応答信号にのせ応答信号
送信回路４より監視局６の応答信号受信回路２へ返信す
る。The present invention will be described below with reference to the drawings. FIG. 1 is a block diagram of an embodiment of the present invention. Figure 1
In the monitoring station 6, the information transmission request transmission circuit 1 sequentially transmits information transmission requests to all the monitored stations, and the response signals from the monitored stations (7A and 7B in FIG. 1) to the monitored signals are transmitted to the response signal reception circuit. By receiving at 2, the fault information of the monitored station is obtained. On the other hand, for example, in the monitored station 7B, the information transmission request and response signal receiving circuit 3B constantly intercepts the response signal from the other monitored station (for example, 7A) to the monitoring station 6, so that a failure of the other monitored station get information. Based on this information, the fault information identification circuit 5B collects it at its own station and identifies the primary fault information from the monitoring information. That is, the monitored station 7A identifies the common failure or the like of the communication line 8 or the like that has already been transmitted, and identifies the failure information unique to the own station. Monitored station 7
When the information transmission request and response signal reception circuit 3B receives the information transmission request from the monitoring station 6 to the own station, the response signal transmission circuit 4 puts only the above-mentioned primary failure information peculiar to the own station on the response signal. It returns to the response signal receiving circuit 2 of the monitoring station 6.

【０００６】[0006]

【発明の効果】以上説明したように本発明は、被監視局
同士が他の被監視局の応答信号を傍受することにより、
他の被監視局の障害情報を得た後に、自局の監視情報か
ら一時的障害情報のみを識別し、監視局へ応答信号とし
て通知する様にしたので、監視局の負荷を著しく軽減で
き、障害情報処理効率を著しく増大させることができる
効果がある。As described above, according to the present invention, the monitored stations intercept the response signals of the other monitored stations.
After obtaining the failure information of other monitored stations, only the temporary failure information is identified from the monitoring information of its own station and notified to the monitoring station as a response signal, so the load on the monitoring station can be significantly reduced, There is an effect that the failure information processing efficiency can be significantly increased.

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

【図１】本発明の一実施例のブロック図である。FIG. 1 is a block diagram of an embodiment of the present invention.

【図２】一般的な監視局及び被監視局のシステム構成図
である。FIG. 2 is a system configuration diagram of a general monitoring station and a monitored station.

【図３】従来の遠方監視方式のブロック図である。FIG. 3 is a block diagram of a conventional remote monitoring system.

【符号の説明】[Explanation of symbols]

１ 情報送信要求送信回路 ２ 応答信号受信回路 ３Ａ，３Ｂ 情報送信要求及び応答信号受信回路 ４Ａ，４Ｃ 応答信号送信回路 ５Ａ，５Ｂ 障害情報識別回路 ６ 監視局 ７Ａ，７Ｂ 被監視局 1 information transmission request transmission circuit 2 response signal reception circuit 3A, 3B information transmission request and response signal reception circuit 4A, 4C response signal transmission circuit 5A, 5B fault information identification circuit 6 monitoring station 7A, 7B monitored station

Claims (2)

【特許請求の範囲】[Claims] 【請求項１】 監視局が通信回線に並列接続された複数
の被監視局を一つの搬送波信号を使用して監視する遠方
監視方式において、前記監視局は被監視局に対して情報
送信要求を送信する情報送信要求送信回路と、前記被監
視局からの応答信号を受信する応答信号受信回路とを有
し、前記被監視局は他の被監視局から監視局への応答信
号を傍受する手段および前記監視局からの送信要求信号
を受信する手段を有する情報送信要求及び応答信号受信
回路と、自局で発生した障害が直接的な一次障害か、他
局の障害により発生した二次障害かを判別し、一次的障
害情報のみ前記監視局へ送出する障害情報識別回路とを
有することを特徴とする遠方監視方式。1. In a remote monitoring system in which a monitoring station monitors a plurality of monitored stations connected in parallel to a communication line by using one carrier signal, the monitoring station sends an information transmission request to the monitored station. An information transmission request transmitting circuit for transmitting, and a response signal receiving circuit for receiving a response signal from the monitored station, wherein the monitored station intercepts a response signal from another monitored station to the monitoring station. And an information transmission request and response signal receiving circuit having means for receiving a transmission request signal from the monitoring station, and whether the fault occurring in the own station is a direct primary fault or a secondary fault caused by a fault in another station. And a fault information identifying circuit for sending only primary fault information to the monitoring station. 【請求項２】 前記被監視局が監視局への障害情報を送
出する応答信号送信回路を備え、前記情報送信要求及び
応答信号受信回路がこの応答信号送信回路の送出信号を
受信する機能を有することを特徴とする請求項１記載の
遠方監視方式。2. The monitored station includes a response signal transmitting circuit for transmitting fault information to the monitoring station, and the information transmission request and response signal receiving circuit has a function of receiving a signal transmitted by the response signal transmitting circuit. The remote monitoring system according to claim 1, characterized in that.