JPS6057255B2 - Centralized monitoring control system - Google Patents
Centralized monitoring control systemInfo
- Publication number
- JPS6057255B2 JPS6057255B2 JP55008983A JP898380A JPS6057255B2 JP S6057255 B2 JPS6057255 B2 JP S6057255B2 JP 55008983 A JP55008983 A JP 55008983A JP 898380 A JP898380 A JP 898380A JP S6057255 B2 JPS6057255 B2 JP S6057255B2
- Authority
- JP
- Japan
- Prior art keywords
- optical
- centralized monitoring
- control system
- conversion
- control
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/27—Arrangements for networking
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/27—Arrangements for networking
- H04B10/275—Ring-type networks
- H04B10/2755—Ring-type networks with a headend
Landscapes
- Engineering & Computer Science (AREA)
- Computing Systems (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Lock And Its Accessories (AREA)
- Testing Of Optical Devices Or Fibers (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
- Selective Calling Equipment (AREA)
- Optical Communication System (AREA)
Description
【発明の詳細な説明】
この発明は光ファイバ伝送装置を用いた集中監視制御
システムに関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a centralized monitoring and control system using an optical fiber transmission device.
従来この種の装置として第１図に示すものがあつた。 A conventional device of this type is shown in FIG.
同図において、１は集中監視制御所、２はＯＳ（Ｏｐｔ
ｉｃａｌＳｔａｔｉｏｎ）、３は光ファイバ、４はＯＢ
Ｓ（ＯｐｔｉｃａｌＢｙｐａｓｓＳｗｉｔｃｈ）、５は
光−電気変換（Ｏ／Ｅ変換）を行う光受信機、６は電気
一光変換（Ｅ／０変換）を行う光送信機、７はパラレル
イン、パラレルアウト機能を持つシフトレジスタ、８は
インタフェース回路、９は監視制御の直接の対象てある
端末接点、１０は被監視アナログ量である。 次に動作
について説明する。In the figure, 1 is a central monitoring control center, 2 is an OS (Opt
icalStation), 3 is optical fiber, 4 is OB
S (Optical Bypass Switch), 5 is an optical receiver that performs optical-to-electrical conversion (O/E conversion), 6 is an optical transmitter that performs electrical-to-optical conversion (E/0 conversion), and 7 has parallel in and parallel out functions. 8 is an interface circuit, 9 is a terminal contact directly targeted for monitoring control, and 10 is an analog quantity to be monitored. Next, the operation will be explained.
集中監視制御所１とそれぞれの被監視局にある０５２と
は第１図に示すように、光ファイバケーブル３によつて
ループ状に結合される。０５２が正常に動作していると
きはＯＢＳ４を介して０／Ｅ変換を行う光受信機５、Ｅ
／０変換を行う光送信機６が接続され、シフトレジスタ
７、インタフェース回路８等を経て監視制御対象である
接点９やアナログ量１０と集中監視制御所１との間の情
報の授受を行う。これに対し０５２に異常が生じた場合
には、ＯＢＳ４によつて伝送路と０５２とは切り離なさ
れる。つまり各０５２が能動的な（Ａｃｔｉｖｅ）デー
タの中継機能を持つたデータウェイ方式である。 従来
の能動的（Ａｃｔｉｖｅ）光ステーション装置（ＯＳ）
を用いた集中監視システムは以上のように構成されるの
で、各０５においてすべてのデータを一度光電変換する
必要があり、そのためのハードウェア（Ｈ／Ｗ）が大が
かりなものとなる。The central monitoring control center 1 and the 052 in each monitored station are connected in a loop by an optical fiber cable 3, as shown in FIG. When 052 is operating normally, optical receivers 5 and E perform O/E conversion via OBS4.
An optical transmitter 6 that performs /0 conversion is connected to exchange information between the contact points 9 and analog quantities 10 that are subject to monitoring control and the central monitoring and control center 1 via a shift register 7, an interface circuit 8, and the like. On the other hand, if an abnormality occurs in 052, the transmission path and 052 are separated by OBS4. In other words, it is a data way system in which each 052 has an active data relay function. Conventional active optical station equipment (OS)
Since the centralized monitoring system using the above is configured as described above, it is necessary to photoelectrically convert all data once in each 05, and the hardware (H/W) for this becomes large-scale.
特に、各被監視制御局における監視制御項目が少ないシ
ステムにおいては大きな投資効率の悪化をまねいていた
。また電気的悪環境化にある０５においてはすべてのデ
ータが一度光電変換されることにより信頼性が低下する
という欠点があつた。 この発明は上記のような従来の
ものの欠点を除去するためになされたもので０５に、簡
易な受信装置と発光素子を持たない変調装置を用いるこ
とにより、安価でかつ電磁誘導雑音による悪影響を受け
にくい集中監視制御システムを提供することを目的とし
ており、特に各被監視制御局における監視制御項目の少
ない場合に好適なシステムを提供することを目的として
いる。 以下この発明の一実施例を図について説明する
。Particularly in systems where each monitored control station has a small number of monitoring and control items, this leads to a significant deterioration in investment efficiency. In addition, in 05, which is in a bad electrical environment, there was a drawback that reliability decreased because all data was photoelectrically converted once. This invention was made in 2005 to eliminate the drawbacks of the conventional devices as described above, and by using a simple receiving device and a modulating device that does not have a light emitting element, it is inexpensive and does not suffer from the adverse effects of electromagnetic induction noise. The purpose of this invention is to provide a centralized monitoring and control system that is easy to use, and particularly to provide a system that is suitable for cases where there are only a few monitoring and control items in each monitored and controlled station. An embodiment of the present invention will be described below with reference to the drawings.
第２図において、１は集中監視制御所、２は０Ｓ（０ｐ
ｔｉｃａ１Ｓｔａｔｉ０ｎ）（被監視制御局）、３は光
ファイバ、５はＯ／Ｅ変換を行う光受信装置（以下０Ｅ
と呼ぶ）、６はＥ／０変換を行う光送信機（以下ＥＯと
呼ぶ）、９は監視制御の直接の対象である端末接点、１
０は被監視対象量であるアナログ量である。また０Ｓ２
の構成要素中１１は０ＵＢ（０ｐｔｉｃａＩＵｎｂａ１
ａｎｃｅｄＢｒａｎｃｈ）、１２はＰＤ（ＰｈＯｔＯ−
ＤｅｔｅｃｔＯｒ）、１３はＤｅｃＯｄｅｒｌｌ４はタ
イマー回路、１５は０ＳＷ（０ｐｔｉｃａ１Ｓｗｉｔｃ
ｈ）、１６はＣＯｄｅｒｌｌ７は０ＳＭ（０ｐｔｉｃａ
１ＳｗｉｔｃｈｉｎｇＭ０ｄｕ１ａｔ０ｒ）である。本
発明の一実施例を更に第２図、第３図を用いて説明する
。In Figure 2, 1 is the central monitoring control center, 2 is 0S (0p
tica1Stati0n) (monitored control station), 3 is an optical fiber, 5 is an optical receiving device that performs O/E conversion (hereinafter 0E
6 is an optical transmitter that performs E/0 conversion (hereinafter referred to as EO), 9 is a terminal contact that is directly subject to monitoring control, 1
0 is an analog quantity which is the quantity to be monitored. Also 0S2
11 of the constituent elements are 0UB (0pticaIUnba1
ancedBranch), 12 is PD(PhOtO-
DetectOr), 13 is DecOderll4 is a timer circuit, 15 is 0SW (0ptica1Switc
h), 16 is COderll7 is 0SM (0ptica
1SwitchingM0du1at0r). An embodiment of the present invention will be further described with reference to FIGS. 2 and 3.
それぞれの被監視制御局を第２図のように発光源を持た
ない受動的（Ｐａｓｓｉｖｅ）な光ステーション０Ｓ２
によつて構成し、Ｅ／０６、０／Ｅ５を持つ集中監視制
御所１と各０Ｓ２とは上り、下り計２本の光ファイバに
よつて結合される。次に動作について説明すると、いま
、Ａ
上Ｊｎｅに光信号が送られると、光ステーション０Ｓ２
−（１）の０ＵＢ１１を経てＰＤｌ２が光信号を検知し
、受信信号に応じて端末接点９の制御がデコーダ１３に
よつてなされる。Each monitored control station is a passive optical station 0S2 that does not have a light source as shown in Figure 2.
The central monitoring and control center 1 having E/06 and 0/E5 and each OS2 are connected by a total of two optical fibers, upstream and downstream. Next, to explain the operation, when an optical signal is sent to A upper Jne, optical station 0S2
- PDl2 detects the optical signal via 0UB11 in (1), and the terminal contact 9 is controlled by the decoder 13 in accordance with the received signal.
一方、ＰＤｌ２が光を検知することによつてターイマー
回路１４が作動し、ある所定の時間ｔ１をタイムカウン
トすると０ＳＷ１５を動作する。On the other hand, when the PDl2 detects light, the timer circuit 14 is activated, and when a certain predetermined time t1 is counted, the OSW 15 is activated.
この０ＳＷ１５は理論的には第３図ａのブロック図に示
すような接点であり、上記ＰＤｌ２の検知からち時間の
間、図示状態となり、ち時間ののちにス５イツチオンし
て次段の０Ｓ２、すなわち第２図に示す０Ｓ（１＋１）
２に切換えられ、この０Ｓ（１＋１）２においても上記
０Ｓ２と同様な動作が成される。以後、上述の動作が各
０Ｓ２において行なわれる。ここで、上記ＰＤｌ２の検
知からち時５間までの間、０Ｓ２内では次のような動作
を行なう。端末接点９、アナログ量１０などの監視情報
をコータ−１６が得、例えばＡ／Ｄ変換などを行なつて
デジタル信号化する。このデジタル信号を０ＳＭ１７に
入力することによつて０ＳＭ１７はＡ一Ｌｉｎｅからの
光を第３図ｂのタイムチャートにおけるＢ上Ｉｒｌｅ信
号に示すような上記監視情報を表わすデジタル信号の光
とし、Ｂ上Ｉｒｌｅに０ＳＷ１５を介して出力する。こ
のような光信号処理が順次各０Ｓ２内で行なわれ、各０
Ｓ２における監視情報がデジタル化された光として連続
的にＪＢ上Ｉｎｅに出力される。この一連の情報伝送は
、Ａ上Ｉｎｅの光信号が停止してからＴ２時間後に順次
０Ｓ２−（１）、０Ｓ２−（１＋１）、 ・・・・の０
ＳＷ１５が初期状態に復帰して終了する。以上のように
、この発明によれば光ステーションを受動的（Ｐａｓｓ
ｉｖ）な構成要素によつてシンプルに構成したので装置
が安価にでき、また電気的悪環境下においても信頼性の
高いデータ伝送が行なえるという効果がある。Theoretically, this 0SW15 is a contact point as shown in the block diagram of FIG. , that is, 0S(1+1) shown in FIG.
2, and the same operation as the above-mentioned OS2 is performed in this OS(1+1)2. Thereafter, the above-described operation is performed in each 0S2. Here, from the detection of PDl2 to the time 5, the following operation is performed in OS2. A coater 16 obtains monitoring information such as the terminal contact 9 and the analog quantity 10, and performs A/D conversion, for example, to convert it into a digital signal. By inputting this digital signal to the 0SM17, the 0SM17 converts the light from the A-Line into a digital signal light representing the above-mentioned monitoring information as shown in the Irle signal on B in the time chart of FIG. Output to Irle via 0SW15. Such optical signal processing is sequentially performed within each 0S2, and each 0S2
The monitoring information in S2 is continuously output as digitized light to the JB Ine. This series of information transmission is performed sequentially at 0S2-(1), 0S2-(1+1), .
The SW15 returns to its initial state and the process ends. As described above, according to the present invention, the optical station can be operated passively (Pass
iv) Since it is simply constructed using the following components, the device can be manufactured at low cost, and it also has the advantage of being able to perform highly reliable data transmission even under adverse electrical environments.
第１図は従来のシステムを示すブロック図、第２図はこ
の発明の一実施例のシステムのブロック図、第３図はこ
の発明によるシステムの動作を説明する図で、同図ａは
ブロック図、同図ｂはタイムチャートである。
図において、１は集中監視制御所、２は０Ｓ（０ｐｔｉ
ｃａ１Ｓｔａｔｉ０ｎ）、３は光ファイバ、４は０ＢＳ
（０ｐｔｉｃａ１ＢｙｐａｓｓＳｗ１ｃｈ）、５はＯ／
Ｅ変換を行う光受信機、６はＥ／Ｏ変換を行う光送信機
、７はシフトレジスタ、８はインタフェース回路、９は
被監視制御接点端末、１０は被監視アナログ量、１１は
０ＵＢ（０ｐｔｉｃａ１Ｕｎｂａ１ａｒＫ）ＥｄＢｒａ
ｒ）Ｃｈ）、１２はＰＤ（ＰｈＯｔＯ−ＤｅｔｅｒｔＯ
ｒ）、１３はＤｅｃＯｄｅｒｌｌ４はタイマー回路、１
５は０ＳＷ（０ｐｔｉｃａ１Ｓｗｉｔｃｈ）、１６はＣ
Ｏｄｅｒｌｌ７は０ＳＭ（０ｐｔｉｃａ１Ｓｗｉｔｃｈ
ｉｎｇＭ０ｄｕＩａｔ０ｒ）。FIG. 1 is a block diagram showing a conventional system, FIG. 2 is a block diagram of a system according to an embodiment of the present invention, FIG. 3 is a diagram explaining the operation of the system according to the present invention, and FIG. , Figure b is a time chart. In the figure, 1 is the central monitoring control center, 2 is 0S (0pti
ca1Stati0n), 3 is optical fiber, 4 is 0BS
(0ptica1BypassSw1ch), 5 is O/
6 is an optical receiver that performs E/O conversion, 7 is a shift register, 8 is an interface circuit, 9 is a monitored control contact terminal, 10 is an analog quantity to be monitored, 11 is 0UB (0ptica1Unba1arK )EdBra
r) Ch), 12 is PD (PhOtO-DetertO
r), 13 is DecOderll4 is a timer circuit, 1
5 is 0SW (0ptica1Switch), 16 is C
Oderll7 is 0SM (0ptica1Switch
ingM0duIat0r).
Claims (1)
た集中監視制御所から監視制御する集中監視制御システ
ムにおいて、前記集中監視制御所にのみ電気−光変換お
よび光−電気変換を行う先送受信機を装備し、各被監視
制御局は発光源を持たない受動的な光変調装置およびバ
イパス機能を実現する光部品の組合せで構成したことを
特徴とする集中監視制御システム。1. In a centralized monitoring and control system that monitors and controls a plurality of monitored control stations from a centralized monitoring and control center using optical fiber transmission equipment, advance transmission and reception that performs electrical-to-optical conversion and optical-to-electrical conversion only to the centralized monitoring and control center. 1. A centralized monitoring and control system characterized in that each monitored control station is configured with a combination of a passive optical modulator without a light emitting source and optical components that realize a bypass function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55008983A JPS6057255B2 (en) | 1980-01-28 | 1980-01-28 | Centralized monitoring control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55008983A JPS6057255B2 (en) | 1980-01-28 | 1980-01-28 | Centralized monitoring control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56106445A JPS56106445A (en) | 1981-08-24 |
| JPS6057255B2 true JPS6057255B2 (en) | 1985-12-13 |
Family
ID=11707918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55008983A Expired JPS6057255B2 (en) | 1980-01-28 | 1980-01-28 | Centralized monitoring control system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6057255B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6264047U (en) * | 1985-10-08 | 1987-04-21 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5414785A (en) * | 1993-09-13 | 1995-05-09 | At&T Corp. | Optical data bus having collision detection capability |
-
1980
- 1980-01-28 JP JP55008983A patent/JPS6057255B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6264047U (en) * | 1985-10-08 | 1987-04-21 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56106445A (en) | 1981-08-24 |
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