JPH04104621A - Signal transmitter - Google Patents
Signal transmitterInfo
- Publication number
- JPH04104621A JPH04104621A JP2223140A JP22314090A JPH04104621A JP H04104621 A JPH04104621 A JP H04104621A JP 2223140 A JP2223140 A JP 2223140A JP 22314090 A JP22314090 A JP 22314090A JP H04104621 A JPH04104621 A JP H04104621A
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- fiber cable
- sequencer
- station
- signal
- 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 16
- 230000008054 signal transmission Effects 0.000 claims abstract description 13
- 239000013307 optical fiber Substances 0.000 abstract description 31
- 238000010586 diagram Methods 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 1
Landscapes
- Optical Communication System (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、光フアイバー二重化システム等の二系統を
有する信号伝送装置において、一方の系統の断線時に自
動的に他方の系統へ切換えるようにした信号伝送装置に
関するものである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides a signal transmission device having two systems such as an optical fiber duplex system, which automatically switches to the other system when one system is disconnected. The present invention relates to a signal transmission device.
第３図は従来の信号伝送装置である一系統の光リンクデ
ータシステムを示す図で、図において、。FIG. 3 is a diagram showing an optical link data system that is a conventional signal transmission device.
１はシーケンサ親局、２〜４は第１〜第３シーケンサ子
局、５は信号伝送路となる光ファイバである。1 is a sequencer master station, 2 to 4 are first to third sequencer slave stations, and 5 is an optical fiber serving as a signal transmission path.
この従来のものでは、シーケンサ親局１から第３シーケ
ンサ子局４ヘデータ信号を送る場合、光フアイバーケー
ブル５から第１シーケンサ子局２および第２シーケンサ
千局３を経て第３シーケンサ千局４へ伝送される。また
第３シーケンサ千局４からシーケンサ親局１へのデータ
信号は第３シーケンサ子局４から直接シーケンサ親局１
へ伝送される。In this conventional system, when sending a data signal from the sequencer master station 1 to the third sequencer slave station 4, the optical fiber cable 5 passes through the first sequencer slave station 2 and the second sequencer station 3 to the third sequencer station 4. transmitted. In addition, the data signal from the third sequencer station 4 to the sequencer master station 1 is directly transmitted from the third sequencer slave station 4 to the sequencer master station 1.
transmitted to.
ここで第２シーケンサ子局３と第３シーケンサ子局４間
の光フアイバーケーブル５が断線した場合、シーケンサ
親局１がら第３シーケンサ子局４ヘデータ信号を送るに
は、第１シーケンサ子局２から第２シーケンサ子局３に
伝送された後、第２シーケンサ子局３で折り返し、第１
シーケンサ千局２からシーケンサ親局１を経て、第３シ
ーケンサ子局４へ伝送される。Here, if the optical fiber cable 5 between the second sequencer slave station 3 and the third sequencer slave station 4 is disconnected, in order to send the data signal from the sequencer master station 1 to the third sequencer slave station 4, the first sequencer slave station 2 After being transmitted from the second sequencer slave station 3, it is returned by the second sequencer slave station 3, and the first
It is transmitted from the sequencer station 2 to the third sequencer slave station 4 via the sequencer master station 1.
従来のものは以上のように構成されているので、２箇所
以上の光フアイバーケーブルが断線した場合は、断線し
た間のシーケンサはこのシステムから解列されることに
なる。Since the conventional system is configured as described above, if the optical fiber cable is disconnected at two or more locations, the sequencer between the disconnections will be disconnected from the system.
この発明はこのような課題を解消するためになされたも
ので、光フアイバーケーブル断線時に自動的に他系列の
光フアイバーケーブルに切換えられるとともに、２箇所
以上の断線時にシーケンサがシステムから解列されるの
を防ぎ、信頼性の高い信号伝送を得ることを目的とする
。This invention was made to solve these problems, and when an optical fiber cable is broken, it is automatically switched to another optical fiber cable, and when two or more places are broken, the sequencer is disconnected from the system. The purpose is to prevent this and obtain highly reliable signal transmission.
この発明に係る信号伝送装置は、親局と複数の子局との
間で環状の伝送路によってデータ信号を伝送するものに
おいて、伝送路として互いに独立した第１と第２の伝送
路を設けると共に一方の伝送路の断線時に他方の伝送路
に切換える切換装置を設けたものである。A signal transmission device according to the present invention transmits data signals between a master station and a plurality of slave stations through a ring-shaped transmission path, in which first and second transmission paths are provided as transmission paths that are independent of each other. A switching device is provided to switch to the other transmission line when one transmission line is disconnected.
この発明における伝送路は、２系統設けられ、しかも切
換装置によって一方の系統の断線時他方の系統へ自動的
に切換えられるよう構成されているので、断線による子
局の解列を防ぎ、信号の伝送の信頼性が向上する。The transmission line in this invention is provided with two systems, and is configured so that when one system is disconnected, it is automatically switched to the other system by a switching device, so that it is possible to prevent slave stations from being disconnected due to a disconnection, and to prevent the signal from being disconnected. Transmission reliability is improved.
以下この発明の一実施例を第１ｒｆ！Ｉおよび第２図に
もとづいて説明する。第１図および第２図において、６
は外箱、７は外箱６に取付けられた光フアイバーコネク
タ、８は２芯１対形の自局シーケンサ用光フアイバーケ
ーブル、９．ＩＯは２芯１対形の他局シーケンサ用ファ
イバーケーブル、ＩＩは電気信号を光信号に変換する電
気−光変換器、１２は光信号を電気信号に変換する光−
電気変換器、１３はシーケンサからの信号により作動す
る切換接点１３１を有する切換用リレー、１４は１芯形
の光ファイバー、１５は光ファイバーケーブル二重化袋
！である。An embodiment of the present invention will be described below. This will be explained based on I and FIG. In Figures 1 and 2, 6
7 is an outer box, 7 is an optical fiber connector attached to the outer box 6, 8 is a 2-core, 1-pair optical fiber cable for the local sequencer, 9. IO is a 2-core, 1-pair fiber cable for another station's sequencer, II is an electrical-to-optical converter that converts an electrical signal into an optical signal, and 12 is an optical fiber cable that converts an optical signal into an electrical signal.
An electric converter, 13 a switching relay with a switching contact 131 activated by a signal from a sequencer, 14 a single-core optical fiber, and 15 a double optical fiber cable bag! It is.
ここで他局シーケンサ用光フアイバーケーブル９は第１
の系統であるＡ系を、また他局シーケンサ用光フアイバ
ーケーブル１０は第２の系統であるＢ系を夫々構成して
いる。また電気−光変換器１１および光−電気変換器１
２は共に電気的切換を行うためのデータ変換器である。Here, the optical fiber cable 9 for the other station sequencer is connected to the first
The optical fiber cable 10 for other station sequencers constitutes the B system, which is the second system. Also, an electrical-optical converter 11 and an optical-electrical converter 1
2 is a data converter for electrical switching.
なお、その他の構成は第３図に示す従来のものと同様で
あるので説明を省略する。Note that the other configurations are the same as the conventional one shown in FIG. 3, so explanations will be omitted.
このように構成されたものでは、通常切換用リレー接点
＋３１は図示上側に閉じており、データ信号は、自局シ
ーケンサ用光フアイバーケーブル８から光フアイバーケ
ーブル９を経て他局シーケンサへ、また他局シーケンサ
から光フアイバーケーブル９を経て光フアイバーケーブ
ル８へ伝送される。With this configuration, the switching relay contact +31 is normally closed to the upper side in the figure, and the data signal is transmitted from the optical fiber cable 8 for the own station's sequencer to the other station's sequencer via the optical fiber cable 9, and to the other station's sequencer. It is transmitted from the sequencer to the optical fiber cable 8 via the optical fiber cable 9.
いま、Ａ系の光フアイバーケーブル９が断線すると、信
号が途切れるので、これをシーケンサで検知し、切換用
リレー１３を作動させる。切換用リレー１３が作動する
ことにより切換用リレー接点１３１が図示下側に切換え
られ、Ａ系の光フアイバーケーブル９からＢ系の光フア
イバーケーブルｌＯに切換わり、データ信号はＢ系の光
フアイバーケーブルｌＯを経て授受される。Now, if the A-system optical fiber cable 9 is disconnected, the signal is interrupted, so the sequencer detects this and activates the switching relay 13. When the switching relay 13 operates, the switching relay contact 131 is switched to the lower side in the figure, and the A-system optical fiber cable 9 is switched to the B-system optical fiber cable IO, and the data signal is transferred to the B-system optical fiber cable. It is given and received via IO.
なおこの実施例では、切換器として切換リレー１３を用
いたが、切換器としてトランジスタ回路を用いてもよい
。In this embodiment, the switching relay 13 is used as the switching device, but a transistor circuit may also be used as the switching device.
またこの実施例では、光フアイバーケーブルについて説
明したが、電気−光変換器１１および光−電気変換器１
２を取り除いて信号伝送路を同軸ケーブルにしてもよい
。Further, in this embodiment, the optical fiber cable was explained, but the electrical-optical converter 11 and the optical-electrical converter 1
2 may be removed and the signal transmission path may be a coaxial cable.
以上のようにこの発明による信号伝送装置は、親局と複
数の子局間の環状の伝送路を２系統設け、一方の伝送路
の断線時に他方の伝送路に、自動切換を行うように構成
したので、信号伝送の信頼性が向上する。As described above, the signal transmission device according to the present invention has two ring-shaped transmission lines between a master station and a plurality of slave stations, and is configured to automatically switch to the other transmission line when one transmission line is disconnected. Therefore, the reliability of signal transmission is improved.
第１図および第２図はこの発明の一実施例を示す図で、
第１図は要部回路図、第２図は全体の系統図、第３図は
従来のこの種信号伝送装置を示す全体の系統図である。
図中、１は親局、２，３．４は子局、５，８，９゜１０
、１４は光フアイバーケーブル、１１は電気−光変換器
、１２は光−電気変換器、１３は切換用リレー１３１は
切換用リレー接点である。
なお、図中同一符号は同−又は相当部分を示す。FIG. 1 and FIG. 2 are diagrams showing one embodiment of this invention,
FIG. 1 is a main circuit diagram, FIG. 2 is an overall system diagram, and FIG. 3 is an overall system diagram showing a conventional signal transmission device of this type. In the figure, 1 is the master station, 2, 3.4 are slave stations, 5, 8, 9゜10
, 14 is an optical fiber cable, 11 is an electric-to-optical converter, 12 is an optical-to-electrical converter, and 13 is a switching relay 131 is a switching relay contact. Note that the same reference numerals in the figures indicate the same or equivalent parts.
Claims (1)
独立した環状の第１および第２の伝送路、この伝送路の
断線時に作動し第１および第２の伝送路間の切換えを行
う切換装置を備えた信号伝送装置。Mutually independent ring-shaped first and second transmission lines that transmit data signals between a master station and a plurality of slave stations, and a switch that operates when the transmission line is disconnected to switch between the first and second transmission lines. A signal transmission device equipped with a switching device that performs
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2223140A JPH04104621A (en) | 1990-08-24 | 1990-08-24 | Signal transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2223140A JPH04104621A (en) | 1990-08-24 | 1990-08-24 | Signal transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04104621A true JPH04104621A (en) | 1992-04-07 |
Family
ID=16793420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2223140A Pending JPH04104621A (en) | 1990-08-24 | 1990-08-24 | Signal transmitter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04104621A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6507384B1 (en) | 1999-03-26 | 2003-01-14 | Seiko Epson Corporation | Flexible printed wiring board, electro-optical device, and electronic equipment |
-
1990
- 1990-08-24 JP JP2223140A patent/JPH04104621A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6507384B1 (en) | 1999-03-26 | 2003-01-14 | Seiko Epson Corporation | Flexible printed wiring board, electro-optical device, and electronic equipment |
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