JPS60230744A - Data transmission equipment in loop type communicating system - Google Patents

Data transmission equipment in loop type communicating system

Info

Publication number
JPS60230744A
JPS60230744A JP8734284A JP8734284A JPS60230744A JP S60230744 A JPS60230744 A JP S60230744A JP 8734284 A JP8734284 A JP 8734284A JP 8734284 A JP8734284 A JP 8734284A JP S60230744 A JPS60230744 A JP S60230744A
Authority
JP
Japan
Prior art keywords
signal
power source
circuit
terminal
data transmission
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
Application number
JP8734284A
Other languages
Japanese (ja)
Inventor
Sanai Hamaguchi
浜口 佐内
Takashi Nakamura
俊 中村
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.)
Shinko Electric Co Ltd
Original Assignee
Shinko Electric Co Ltd
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 Shinko Electric Co Ltd filed Critical Shinko Electric Co Ltd
Priority to JP8734284A priority Critical patent/JPS60230744A/en
Publication of JPS60230744A publication Critical patent/JPS60230744A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/28Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/42Loop networks

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Small-Scale Networks (AREA)

Abstract

PURPOSE:To cause no disconnection of a loop and also to cause no attenuation of a signal even if a power source is turned off, by providing a sub-power source on a data power source device, and supplying a power source to only the part required for forming a loop by the sub-power source, when the main power source has been turned off. CONSTITUTION:When a main power source is on and changeover switches SW14, 15 are in a state as shown by the figure, a power source is supplied to each part from a terminal 15c, and an optical signal from an optical fiber 10 is converted to an electrical signal SR by a receiving circuit 9, and inputted to a controller CT part 8 through a gate circuit 11. The CT part 8 sends the signal SR to a B terminal of a multiplexer MX12, and impresses a signal S of an H level to a C terminal of the MX12 through a gate 17. The MX12 selects the signal ST, converts it to an optical signal by a transmitting circuit 13 and sends it out to the optical fiber 10. When the main power source is disconnected, the SWs 14, 15 are switched, the power source is supplied to each part of a circuit part 7 from a sub-power source, the gates 11, 12 are closed, the MX12 selects the signal SR of a terminal A and sends it to the circuit 13, and a loop is constituted.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、複数の装置をループ状に接続して各装置間
のデータ伝送を行うループ式通信システムにおいて用い
られるデータ伝送装置に関する。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a data transmission device used in a loop communication system in which a plurality of devices are connected in a loop and data is transmitted between the devices.

〔従来技術〕[Prior art]

第3図に示すように、この欅のデータ伝送装置La、L
bは、例えば元ファイバ2a〜2Cを弁して直列に接続
される。そして、データ伝送装置【aは元ファイバ2a
’に通して伝送される光信号を゛11気的に変換し、こ
の電気信号を再び光信号に変換して光ファイバ2bへ出
力する。データ伝送装置tbも同様である。したがって
、ループを構成するデータ伝送装置の中の1つでも醒源
がオフとされると、その部分でループが断となり、デー
タ伝送が不可能となる。
As shown in Figure 3, this keyaki data transmission device La, L
For example, the fibers b are connected in series by connecting the original fibers 2a to 2C. Then, the data transmission device [a is the original fiber 2a
The optical signal transmitted through the optical fiber 2b is converted into an optical signal, and this electrical signal is converted back into an optical signal and output to the optical fiber 2b. The same applies to the data transmission device tb. Therefore, if even one of the data transmission devices making up the loop is turned off, the loop is cut off at that part, making data transmission impossible.

従来、このような不都合を解決する方法として。Conventionally, as a method to solve this kind of inconvenience.

第4図に示すように、ループに元スイッチ3を挿入し、
この元スイッチを弁してデータ伝送装置【a、tbをル
ープに接続する方法が採られて(・た。
As shown in Figure 4, insert the original switch 3 into the loop,
A method was adopted to connect the data transmission devices [a and tb] to a loop by valve- ing this main switch.

なお、この図において4は光ファイバである。この方法
によれば、データ伝送装置La 、Lbの電源がオフと
された場合、@号は光スィッチを通して伝達され、した
がって、ループが断となることはない。しかしながら、
この方法によれば、光スィッチを使用するのでシステム
が高価になる欠点があり、さらに連続する複数のデータ
伝送装置の電源がいずれもオフとされた場合に、fi!
r号の減衰が人き(なり、結果的にデータ伝送が不可能
となる問題がある。
In addition, in this figure, 4 is an optical fiber. According to this method, when the power to the data transmission devices La and Lb is turned off, the @ signal is transmitted through the optical switch, so the loop will not be disconnected. however,
This method has the disadvantage that the system is expensive because it uses an optical switch, and furthermore, if the power of all consecutive data transmission devices is turned off, the fi!
There is a problem in that the attenuation of the r-th signal becomes severe (as a result, data transmission becomes impossible).

〔発明の目的〕[Purpose of the invention]

この発明は上記、4!情に鑑みてなされたもので。 This invention is mentioned above in 4! It was done out of compassion.

その目的は電源がオフとされた場合においてもループが
断となることがなく、シかも1百号が減衰することもな
いデータ伝送装置tヲ提供することにあろう 〔発明のIII成〕 この発明はデータ伝送装置に副成源を設け、主電源がオ
フとされた時この副電源によって、ループを形成するの
に必要な部分にのみ電源な供給するようにしたものであ
る。
The purpose is to provide a data transmission device in which the loop does not break even when the power is turned off, and the data transmission device does not attenuate even when the power is turned off. The invention provides a data transmission device with a sub-power source, and when the main power source is turned off, the sub-power source supplies power only to the portions necessary to form a loop.

〔実施例〕〔Example〕

第【図はこの発明の一実施例によるデータ伝送装置6の
構成を示すブロック図、第2図は同データ伝送装置を光
ファイバIOによるループに接続したところを示す図で
ある。it図に示′丁ように、この実施例によるデータ
伝送装置6は回線部7とコントローラ部8とから構成さ
れる。回線部7において、受信回路9は元ファイバ【0
を通して伝送される光箔号を成気匿号に変換し、受信信
号81(とじてゲート[回路11の入力端子およびマル
チプレクサ昌2の入力端子Aへ出力する。マルチプレク
サ12は、そのコントロール端子Cへ“0”信号が供給
されr:、時入力端子Aと出力端子とを電気釣に接続し
、コントロール端子Cへ“1″は号が供給された時は入
力端子Bと出力端子とを11気的に接続する。送信回路
【3はマルチプレクサL2の出力信号を光信号に変換し
1元ファイバ[0へ出力する。符号14.15は連動動
作下る切換スイッチであり、切換スイッチ14の端子1
4aに主電源が供給され、共通端子L4Cがスイッチ1
5の端子15aに接続されると共に抵抗16をブrして
接尾され、スイッチL5の端子L5bに副電源が供給さ
れている。そして、スイッチ14の共通端子L4cに得
られる゛電圧がコントローラ部8へ電源電圧として供給
されると共に、ゲート回路11、アンドゲート17へ供
給され、また、スイッチ【5の共通端子15cに得られ
る電圧が回線部7の各部の′電源端子へ供給される。
FIG. 2 is a block diagram showing the configuration of a data transmission device 6 according to an embodiment of the present invention, and FIG. 2 is a diagram showing the data transmission device connected to a loop using an optical fiber IO. As shown in the diagram, the data transmission device 6 according to this embodiment is composed of a line section 7 and a controller section 8. In the line section 7, the receiving circuit 9 is connected to the original fiber 0
The optical foil signal transmitted through the gate is converted into a signal code and output to the input terminal of the circuit 11 and the input terminal A of the multiplexer 2. When a “0” signal is supplied, the input terminal A and the output terminal are connected to the electric fishing device, and when the “1” signal is supplied to the control terminal C, the input terminal B and the output terminal are connected to the electric fishing rod. The transmitting circuit [3 converts the output signal of the multiplexer L2 into an optical signal and outputs it to the single fiber [0]. Reference numerals 14 and 15 are changeover switches that operate in conjunction with each other, and terminal 1 of the changeover switch 14
4a is supplied with main power, and common terminal L4C is connected to switch 1.
The switch L5 is connected to the terminal 15a of the switch L5, and is also connected to the terminal 15a of the switch L5 through a resistor 16, and a sub power source is supplied to the terminal L5b of the switch L5. Then, the voltage obtained at the common terminal L4c of the switch 14 is supplied to the controller section 8 as a power supply voltage, and is also supplied to the gate circuit 11 and the AND gate 17, and the voltage obtained at the common terminal 15c of the switch is supplied to the 'power supply terminals of each part of the line section 7.

次に、コントローラ部8はデータ伝送を必要とする電子
装置に接続されるもので、ゲート回路LLを弁して供給
される受信信号SR?:並列データに変換し、また、受
信されたデータ中に自局あてのものが含まれていた場合
は同データを電子装置へ出力するっまた。他局へ送出丁
べきデータがある場合は、同データを直列データに変換
し、送1gIK号STとして出力し、またこの時、同時
に信号Sとして“t′信号を出力する。
Next, the controller section 8 is connected to an electronic device that requires data transmission, and is supplied with a reception signal SR? by valving the gate circuit LL. : Converts to parallel data, and outputs the same data to the electronic device if the received data includes data addressed to the local station. If there is data to be sent to another station, the same data is converted into serial data and outputted as the transmission 1gIK signal ST, and at the same time, the "t" signal is outputted as the signal S.

以上の構成において、切換スイッチ14.15がオン状
態、丁なわち1図に示す状態の場合は。
In the above configuration, when the changeover switches 14 and 15 are in the on state, that is, in the state shown in FIG.

主電源がスイッチ14の共通端子L4cをブrしてコン
トローラ部8へ供給されると共に、スイッチ15の共通
端子tSCをブトして回線部7の各部へ供給され、これ
により回線部7およびコントローラ部8が共に動作可能
となる。また、生成源の電圧(Hレベルの゛電圧]がゲ
ート回路11およびアンドゲート【7へ供給されること
から、ゲート回路ll、アントゲ−)17が共に開状態
となる。
The main power is supplied to the controller unit 8 by turning off the common terminal L4c of the switch 14, and is supplied to each part of the line unit 7 by turning on the common terminal tSC of the switch 15, thereby causing the line unit 7 and the controller unit 8 can operate together. In addition, since the voltage of the generation source (voltage at H level) is supplied to the gate circuit 11 and the AND gate [7], the gate circuits 11 and 17 are both in an open state.

この結果2受IWtfs号8)Lがコントローラ部8へ
供給され、また、コントローラ部8からIF! @ S
として“1″信号が出力されると、この“L′箔号がア
ンドゲート17に:弁してマルチプレクサ【2のコント
ロール端子Cへ供給されるっそして、同コントロール端
子Cへ“l”1百号が供給されると。
As a result, the second received IWtfs number 8)L is supplied to the controller section 8, and the IF! @S
When a "1" signal is output as a signal, this "L" signal is passed through the AND gate 17 and supplied to the control terminal C of the multiplexer [2. Once the issue is supplied.

マルチプレクサ120入力端子Bと出力端子とが接続さ
れ、送信洒号8Tがマルチプレクサ12および送信回路
13をブrして元ファイバIOへ出力される。一方、I
N号Sとして“0”信号が出力されると、マルチプレク
サ12の入力端子Aと出、力端子とが接続され、この結
果、受111@号S凡がマルチプレクサ12送清回路[
3をブrして光ファイバ【0へ出力される。
The input terminal B and output terminal of the multiplexer 120 are connected, and the transmission signal 8T passes through the multiplexer 12 and the transmission circuit 13 and is output to the original fiber IO. On the other hand, I
When a "0" signal is output as the N No. S, the input terminal A and the output terminal of the multiplexer 12 are connected, and as a result, the receiving 111 @ No. S is connected to the multiplexer 12 sending circuit [
3 and output to the optical fiber 0.

次に、切換スイッチ1.4 、 L 5をオフとすると
Next, when changeover switches 1.4 and L5 are turned off.

主′鑞源のラインが切れ、コントローラ部8へノ11源
供給が停止するっ一部、スイッチ15の端子tsbと共
通端子tSCとが接続されることから、回一部7の各部
へは副電源が供給され、したがって回g部7は動作状態
を続ける。また、スイッチ14がオフ状態になると、そ
の共通端子L4cが抵抗16を弁して接地されることか
ら、ゲート回路[lおよびアンドゲート17に“0″信
号が供給され、これによりゲート回路l【が閉状態とな
り、またマルチプレクサ12のコントロール端子Cへ°
“0”信号が供給される。そして、マルチプレクサ12
のコントロール端子Cへ“0″旧号カ供給されると、そ
の入力端子Aと出力端子とが1気的に接続される1丁な
わち、切換スイッチL4.15をオフとすると、受+y
 +w号1Bがマルチグ 4゜レクサL2f!rニブ「
して送箇回wfr13へ供給され、この送信回路43か
ら光ファイバ10へ出力される。
When the line of the main brazing source is cut and the power supply to the controller section 8 is stopped, the terminal tsb of the switch 15 and the common terminal tSC are connected, so the sub-supply is connected to each section of the circuit section 7. Power is supplied, and therefore the rotation section 7 continues to operate. Furthermore, when the switch 14 is turned off, its common terminal L4c is grounded through the resistor 16, and a "0" signal is supplied to the gate circuit [l and the AND gate 17, thereby causing the gate circuit l[l] to be grounded. is in the closed state, and the control terminal C of the multiplexer 12 is closed.
A “0” signal is supplied. And multiplexer 12
When the old code "0" is supplied to the control terminal C of the control terminal C, the input terminal A and the output terminal are connected together.
+W No. 1B is multig 4゜Lexa L2f! r nib
The signal is then supplied to the transmission circuit wfr 13 and output from the transmission circuit 43 to the optical fiber 10.

この結果、第10図の実施例によれば切換スイッチ14
、L5&オフとしても、ループが断となることがなく、
マた。fFr号が減衰することもない。
As a result, according to the embodiment of FIG.
, even if L5 & off, the loop will not break,
Mata. There is no attenuation of fFr.

なお、上述した実施例においては、伝送線として光ファ
イバIO?:用いているが、メタル系のケーブルを用い
ることも勿論用能である。また、上記実施例における副
電源には1通常バッテリが用いられる。また、上記実施
例における回線部7は、単独で中継器として使用するこ
とができる。
In addition, in the above-mentioned embodiment, the optical fiber IO? is used as the transmission line. :Although it is used, it is of course also possible to use a metal cable. Furthermore, one normal battery is used as the sub-power source in the above embodiment. Further, the line section 7 in the above embodiment can be used alone as a repeater.

〔発明の効果〕〔Effect of the invention〕

以上説明したように、この発明によれば生成源をオフと
した場合においてもループが断とならず、また信号が減
衰することもない。また、光ファイバを用いてループを
形成した場合においては、高価な光スィッチを用いる必
要がなく、したがって回線費用を安価にし得る利点が得
られ、特に簡易型のループ式通信システムに用いて好適
であるっ
As described above, according to the present invention, even when the generation source is turned off, the loop does not break and the signal does not attenuate. In addition, when a loop is formed using optical fibers, there is no need to use expensive optical switches, which has the advantage of reducing line costs, making it particularly suitable for use in simple loop communication systems. There is

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

第1図はこの発明の一実施例の構成を示すブロック図、
第2図は同実施例を回線に接続したところを示す図、第
3図はループ式通信システムに2げる各データ伝送装置
の接続状態を示す図、第4図は元スイッチ3を用いた従
来のデータ伝送装置の接続状態を示す図である。 7・・・回線部、8・・・コントローラ部、9°゛°受
箇回路。 12・・・マルチプレクサ、【3・・・送信回路、14
゜15・・・切換スイッチ、17・・・アンドゲート。 出願人 神鋼電機体式会社 第1図 第2図
FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.
Figure 2 shows how the same embodiment is connected to a line, Figure 3 shows how each data transmission device connected to the loop communication system is connected, and Figure 4 shows how the original switch 3 is used. FIG. 2 is a diagram showing a connection state of a conventional data transmission device. 7... Line section, 8... Controller section, 9°゛° receiving circuit. 12... Multiplexer, [3... Transmission circuit, 14
゜15...Choice switch, 17...And gate. Applicant: Shinko Electric Body Construction Co., Ltd. Figure 1 Figure 2

Claims (1)

【特許請求の範囲】 回線からの信号を受信する受信回路と、前記受信回路の
出力が第1の入力端へ供給され、送信信号が第2の入力
端へ供給されるマルチプレクサと。 前記マルチプレクサの出力を1四巌へ送出する送置回路
とを具備する回線部と、コントローラ部と、前記回線部
およびコントローラ部へ電流を供給する主1′fj、と
を有するデータ伝送装置において、副成源と、前記主電
源をオフとした時前記副′1源を前記受IJ回路、マル
チグレクサ、送信回路へ各々供給する+段と、前記王′
に#がオフとされたことを検出して前記マルチプレクサ
の第1の入力端と出力端とを1気的に接続する手段とを
具備してなるループ式通信システムにおけるデータ伝送
装置。
Claims: A receiving circuit for receiving a signal from a line; and a multiplexer, the output of the receiving circuit being supplied to a first input, and the transmission signal being supplied to a second input. A data transmission device having a line section including a sending circuit for sending the output of the multiplexer to 14 channels, a controller section, and a main 1'fj that supplies current to the line section and the controller section, a sub-source, a + stage for supplying the sub-'1 source to the receiving IJ circuit, the multiplexer, and the transmitting circuit, respectively when the main power source is turned off;
a data transmission device in a loop type communication system, comprising means for detecting that # is turned off and simultaneously connecting a first input terminal and an output terminal of the multiplexer.
JP8734284A 1984-04-28 1984-04-28 Data transmission equipment in loop type communicating system Pending JPS60230744A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8734284A JPS60230744A (en) 1984-04-28 1984-04-28 Data transmission equipment in loop type communicating system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8734284A JPS60230744A (en) 1984-04-28 1984-04-28 Data transmission equipment in loop type communicating system

Publications (1)

Publication Number Publication Date
JPS60230744A true JPS60230744A (en) 1985-11-16

Family

ID=13912193

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8734284A Pending JPS60230744A (en) 1984-04-28 1984-04-28 Data transmission equipment in loop type communicating system

Country Status (1)

Country Link
JP (1) JPS60230744A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0496451A (en) * 1990-08-09 1992-03-27 Kokusai Electric Co Ltd Reset circuit for double power sources
JPH0563720A (en) * 1991-08-30 1993-03-12 Nec Corp Bypass controller for duplicated loop network

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0496451A (en) * 1990-08-09 1992-03-27 Kokusai Electric Co Ltd Reset circuit for double power sources
JPH0563720A (en) * 1991-08-30 1993-03-12 Nec Corp Bypass controller for duplicated loop network

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