JPH01298896A - Monitor control system - Google Patents
Monitor control systemInfo
- Publication number
- JPH01298896A JPH01298896A JP12982488A JP12982488A JPH01298896A JP H01298896 A JPH01298896 A JP H01298896A JP 12982488 A JP12982488 A JP 12982488A JP 12982488 A JP12982488 A JP 12982488A JP H01298896 A JPH01298896 A JP H01298896A
- Authority
- JP
- Japan
- Prior art keywords
- transmission line
- control
- switching
- remote monitoring
- line
- 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.)
- Pending
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 60
- 238000004891 communication Methods 0.000 claims abstract description 11
- 238000012544 monitoring process Methods 0.000 claims description 42
- 238000000034 method Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
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- Selective Calling Equipment (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は電気信号あるいは光信号で情報の伝送を行う伝
送システムの運用状態を遠隔で常時保守・管理する監視
制御システムの監視制御方式に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a supervisory control system for a supervisory control system that remotely maintains and manages the operating status of a transmission system that transmits information using electrical or optical signals.
従来、この種の監視制御方式においては、第２図に示す
とおり、遠隔監視制御装置４（ａ）、４（ｂ）、４ （
ｃ）、４ （ｄ）には第２の伝送路８から第１の伝送路
７への回線切替回路はなく、このため第２の伝送路８を
使用する場合は、主監視制御装置３と各遠隔監視制御装
置４（ａ）、４（ｂ）、４ （ｃ）、４ （ｄ）が空間
的に、あるいは時間的に、別々に第２の伝送路８により
接続され、監視制御データの転送が行なわれていた。即
ち、遠隔監視制御装置４（ａ）、４（ｂ）間で第１の伝
送路７が断となったとき、遠隔監視制御装置４（ｂ）以
遠の遠隔監視制御装置４ （ｃ） 、 ４ （ｄ）の監
視制御データは主監視制御装置３の制御のもとで４ （
ｂ）、 ４ （ｃ）、 ４ （ｄ）と順番に遠隔監視制
御装置との間で回線接続及び回線切断をくり返し、第２
の伝送路８を使用して転送する。Conventionally, in this type of monitoring and control system, as shown in FIG.
c) and 4(d) do not have a line switching circuit from the second transmission line 8 to the first transmission line 7, so when using the second transmission line 8, the main supervisory control device 3 and Each of the remote monitoring and control devices 4(a), 4(b), 4(c), and 4(d) is separately connected spatially or temporally by a second transmission path 8, and the monitoring and control data are transmitted separately. A transfer was taking place. That is, when the first transmission line 7 is disconnected between the remote monitoring and controlling devices 4(a) and 4(b), the remote monitoring and controlling devices 4(c) and 4 located beyond the remote monitoring and controlling device 4(b) The supervisory control data in (d) is stored under the control of the main supervisory control device 3 (
b), 4 (c), and 4 (d) in order to connect and disconnect the line with the remote monitoring and control device, and then
The data is transferred using the transmission path 8.
上述した従来の監視制御方式では、第２の伝送路によっ
て各遠隔監視制御装置との間でデータの転送を行なうた
めには、第２の伝送路が公衆通信網であるので、その薄
皮、該当するアドレスとの間で、回線接続及び回路切断
の動作を行う必要がある。よって、接続せねばならない
遠隔監視制御装置をポーリングする周期が非常に長くな
るという欠点がある。In the above-mentioned conventional supervisory control system, in order to transfer data between each remote supervisory control device via the second transmission route, since the second transmission route is a public communication network, it is necessary to It is necessary to perform line connection and circuit disconnection operations between the address and the address. Therefore, there is a drawback that the polling cycle for the remote monitoring and control device to which it must be connected becomes very long.
そこで本発明は上記従来の欠点に鑑み、各遠隔監視制御
装置からデータを転送する周期を短かくする監視制御方
式を提供するものである。SUMMARY OF THE INVENTION In view of the above-mentioned conventional drawbacks, the present invention provides a monitoring control method that shortens the period of data transfer from each remote monitoring and control device.
本発明は監視制御信号を被監視制御システムの第１の伝
送路と公衆通信網の第２の伝送路とを使用して転送する
複数の遠隔監視制御装置とこの複数の遠隔監視制御装置
を制御する主監視制御装置とを有する監視制御方式にお
いて、前記遠隔監視制御装置に設けられ前記第２の伝送
路から前記第１の伝送路の上位または下位の方向に切替
を行なう第１の回線切替回路とこの切替回路を制御する
切替制御回路と、前記主監視制御装置に設けられ前記第
２の伝送路と前記第１の伝送路との切替を行なう第２の
回線切替回路とこの切替回路を制御する第２の切替制御
回路とを備え、前記第２の伝送路に接続され且つ隣接し
た萌記遠隔監視制御装置間だけ前記第２の伝送路を使用
し、それ以外の区間は前記第１の伝送路を使用して監視
制御信号の転送を行なうように構成したことを特徴とす
る。The present invention provides a plurality of remote monitoring and control devices that transfer a monitoring and control signal using a first transmission path of a monitored control system and a second transmission path of a public communication network, and controls the plurality of remote monitoring and control devices. a first line switching circuit provided in the remote monitoring and controlling device and switching from the second transmission path to the upper or lower direction of the first transmission path; a switching control circuit that controls the switching circuit; a second line switching circuit that is provided in the main supervisory control device and switches between the second transmission line and the first transmission line; and a second line switching circuit that controls the switching circuit. a second switching control circuit, the second transmission line is used only between adjacent Moeki remote monitoring and control devices connected to the second transmission line, and the second transmission line is used for other sections. The present invention is characterized in that it is configured to transfer supervisory control signals using a transmission path.
次に、本発明について図面を参照して説明する。 Next, the present invention will be explained with reference to the drawings.
第１図は本発明の一実施例の構成図である。FIG. 1 is a block diagram of an embodiment of the present invention.
遠隔監視制御装置４内に設けられた第１の回線切替回路
とこの切替回路を制御する切替制御回路１は第２の伝送
路８と第１の伝送路７の上位または下位方向に切替を行
なう回路であり、監視データ転送用伝送路の切替と、第
２の伝送路８を使用する場合の公衆通信網へのアクセス
、即ち回線接続及び切断など一連の処理を行なう。主監
視制御装置３内に設けられた第２の回線切替回路とこの
切替回路を制御する切替制御回路２は、監視データ転送
用伝送路の切替と、第２の伝送路８を使用する場合の公
衆通信網へのアクセス、即ち回線接続及び切断など一連
の処理を行なう。A first line switching circuit provided in the remote monitoring and control device 4 and a switching control circuit 1 that controls this switching circuit perform switching between the second transmission line 8 and the first transmission line 7 in the upper or lower direction. It is a circuit that performs a series of processes such as switching the transmission line for transmitting monitoring data and accessing the public communication network when using the second transmission line 8, that is, line connection and disconnection. A second line switching circuit provided in the main supervisory control device 3 and a switching control circuit 2 that controls this switching circuit are responsible for switching the transmission line for supervisory data transfer and when using the second transmission line 8. Performs a series of processes such as accessing the public communication network, ie, line connection and disconnection.
遠隔監視制御装置４（ａ）、４（ｂ）間で第１の伝送路
７が断となり、遠隔監視制御装置４（ｂ）以降の監視制
御データが転送不可能となると、主監視制御装置３は監
視制御データの転送ができない装置群の情報（ここでは
４ （ｂ）、 ４ （ｃ）。When the first transmission line 7 is disconnected between the remote monitoring and control devices 4(a) and 4(b), and the monitoring and control data from the remote monitoring and control device 4(b) onwards cannot be transferred, the main monitoring and control device 3 is information about a group of devices that cannot transfer supervisory control data (here, 4 (b) and 4 (c)).
４（ｄ））から公衆通信網を使用して接続すべき区間（
４（ａ） 、 ４ （ｂ）間）を分析１判断する。4(d)) to the section to be connected using the public communication network (
4(a) and 4(b)) is analyzed and judged.
その後、遠隔監視制御装置４（ａ）に対して公衆回線を
使用して遠隔監視制御装置４（ｂ）と接続する様に要求
する。遠隔監視制御装置４（ａ）は第１の回線切替回路
及び切替制御回路１により遠隔監視制御装置４（ｂ）と
の間で回線接続を行い、その接続を固定する。この状態
で監視制御データの転送を行い、主監視制御装置３から
遠隔監視制御装置４（ａ）までは第１の伝送路７を使用
し、遠隔監視制御装置４ （ａ） 、 ４ （ｂ）間で
は第２の伝送路８を使用し、遠隔監視制御装置４（ｂ）
以降の装置４ （ｃ）、 ４ （ｄ）、・・・・・・か
らは、さらに第１の伝送路７を使用してデータの転送を
実行する。第２の伝送路８に接続されている遠隔監視制
御装置４（ａ）は一定間隔で遠隔監視制御装置４（ｂ）
に対する第１の伝送路７の状況を監視し、復旧を認めた
場合にはデータの伝送路を第２の伝送路８から第１の伝
送路７に切りもどす。Thereafter, a request is made to the remote monitoring and controlling device 4(a) to connect to the remote monitoring and controlling device 4(b) using a public line. The remote monitoring and controlling device 4(a) establishes a line connection with the remote monitoring and controlling device 4(b) using the first line switching circuit and the switching control circuit 1, and fixes the connection. In this state, the supervisory control data is transferred, and the first transmission path 7 is used from the main supervisory controller 3 to the remote supervisory controller 4(a), and the remote supervisory controller 4(a), 4(b) A second transmission line 8 is used between the remote monitoring and control device 4(b)
The subsequent devices 4(c), 4(d), . . . further use the first transmission path 7 to transfer data. The remote monitoring and controlling device 4(a) connected to the second transmission path 8 connects to the remote monitoring and controlling device 4(b) at regular intervals.
The status of the first transmission line 7 is monitored, and if recovery is recognized, the data transmission line is switched back from the second transmission line 8 to the first transmission line 7.
即ち、本発明は、遠隔監視制御装置４（ａ）、４（ｂ）
、４ （ｃ）、４ （ｄ）、−には、第２の伝送路８と
第１の伝送路７の上位方向または下位方向に切替える第
１の回線切替回路及び切替制御回路１を設け、主監視制
御装置３には、第２の伝送路８と第１の伝送路７を切替
える第２の回線切替回路及び切替制御回路２を設け、第
１の伝送路７での監視制御データ転送が遠隔監視制御装
置４（ａ）と４（ｂ）との間で不可能のとき、遠隔監視
制御装置４（ａ）と４（ｂ）との間は第２の伝送路８を
使用し、４（ａ）以前と４（ｂ）以降の遠隔監視制御装
置に対しては第１の伝送路７を使用することにより、公
衆通信網へのアクセス回数を一回とすることができ、各
遠隔監視制御装置４（ａ）、４ （ｂ）、４ （ｃ）、
４ （ｄ）、−−からデータを転送する周期を短くする
ことができる。That is, the present invention provides remote monitoring and control devices 4(a), 4(b)
, 4 (c), 4 (d), - are provided with a first line switching circuit and a switching control circuit 1 for switching between the second transmission line 8 and the first transmission line 7 in the upper direction or the lower direction, The main supervisory control device 3 is provided with a second line switching circuit and a switching control circuit 2 for switching between the second transmission line 8 and the first transmission line 7, so that the supervisory control data transfer on the first transmission line 7 is possible. When transmission between remote monitoring and control devices 4(a) and 4(b) is not possible, a second transmission line 8 is used between remote monitoring and control devices 4(a) and 4(b), By using the first transmission line 7 for the remote monitoring and control devices before (a) and after 4(b), the number of accesses to the public communication network can be reduced to one time, and each remote monitoring Control devices 4(a), 4(b), 4(c),
4 (d), -- The data transfer cycle can be shortened.
以上説明したように本発明によれば、公衆通信網へのア
クセス回数を一回とすることができ、かつ公衆通信網を
使用する距離を減らすことができ、さらに各遠隔監視制
御装置からデータを転送する時間を短くすることができ
る効果がある。As explained above, according to the present invention, the number of accesses to the public communication network can be reduced to one time, the distance over which the public communication network is used can be reduced, and furthermore, data can be transmitted from each remote monitoring and control device. This has the effect of shortening the transfer time.
第１図は本発明の一実施例を構成図、第２図は従来の監
視制御システムの一例を示す構成図である。
１・・・第１の回線切替回路と切替制御回路、２・・・
第２の回線切替回路と切替制御回路、３・・・主監視制
御装置、４・・・遠隔監視制御装置、５・・・公衆通信
網、６・・・回線切替装置、７・・・第１の伝送路、８
・・・第２の伝送路。FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a block diagram showing an example of a conventional monitoring and control system. 1... first line switching circuit and switching control circuit, 2...
Second line switching circuit and switching control circuit, 3... Main monitoring and control device, 4... Remote monitoring and control device, 5... Public communication network, 6... Line switching device, 7... No. 1 transmission line, 8
...Second transmission path.
Claims (1)
公衆通信網の第２の伝送路とを使用して転送する複数の
遠隔監視制御装置とこの複数の遠隔監視制御装置を制御
する主監視制御装置とを有する監視制御方式において、
前記遠隔監視制御装置に設けられ前記第２の伝送路から
前記第１の伝送路の上位または下位の方向に切替を行な
う第１の回線切替回路とこの切替回路を制御する切替制
御回路と、前記主監視制御装置に設けられ前記第２の伝
送路と前記第１の伝送路との切替を行なう第２の回線切
替回路とこの切替回路を制御する第２の切替制御回路と
を備え、前記第２の伝送路に接続され且つ隣接した前記
遠隔監視制御装置間だけ前記第２の伝送路を使用し、そ
れ以外の区間は前記第１の伝送路を使用して監視制御信
号の転送を行なうように構成したことを特徴とする監視
制御方式。A plurality of remote monitoring and control devices that transfer monitoring and control signals using a first transmission path of the monitored control system and a second transmission path of the public communication network, and a main monitor that controls the plurality of remote monitoring and control devices. In a supervisory control method having a control device,
a first line switching circuit that is provided in the remote monitoring and control device and switches from the second transmission line to the upper or lower side of the first transmission line; and a switching control circuit that controls this switching circuit; a second line switching circuit provided in the main supervisory control device for switching between the second transmission line and the first transmission line; and a second switching control circuit for controlling the switching circuit; The second transmission line is used only between the remote monitoring and control devices that are connected to the second transmission line and adjacent to each other, and the first transmission line is used for other sections to transfer the supervisory control signal. A supervisory control method characterized by being configured as follows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12982488A JPH01298896A (en) | 1988-05-26 | 1988-05-26 | Monitor control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12982488A JPH01298896A (en) | 1988-05-26 | 1988-05-26 | Monitor control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01298896A true JPH01298896A (en) | 1989-12-01 |
Family
ID=15019128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12982488A Pending JPH01298896A (en) | 1988-05-26 | 1988-05-26 | Monitor control system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01298896A (en) |
-
1988
- 1988-05-26 JP JP12982488A patent/JPH01298896A/en active Pending
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