JPS6189733A - Optical transmission communication system - Google Patents

Optical transmission communication system

Info

Publication number
JPS6189733A
JPS6189733A JP59210389A JP21038984A JPS6189733A JP S6189733 A JPS6189733 A JP S6189733A JP 59210389 A JP59210389 A JP 59210389A JP 21038984 A JP21038984 A JP 21038984A JP S6189733 A JPS6189733 A JP S6189733A
Authority
JP
Japan
Prior art keywords
signal
optical
transmission
optical signal
optical 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
JP59210389A
Other languages
Japanese (ja)
Inventor
Koji Kobayashi
孝次 小林
Toshiari Ooe
大江 俊在
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.)
Azbil Corp
Original Assignee
Azbil Corp
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 Azbil Corp filed Critical Azbil Corp
Priority to JP59210389A priority Critical patent/JPS6189733A/en
Publication of JPS6189733A publication Critical patent/JPS6189733A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B10/00Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/27Arrangements for networking
    • H04B10/278Bus-type networks

Landscapes

  • Engineering & Computer Science (AREA)
  • Computing Systems (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)

Abstract

PURPOSE:To attain freely the communication with the same protocol as a con ventional one by relaying and amplifying an optical signal of the 1st and 2nd optical transmission lines transmitting an optical signal in opposite direction mutually at each communication equipment inserted at the midpoint and synthe sizing the two-way signals as a reception signal and transmitting the transmis sion signal in two-way at the same time. CONSTITUTION:Transmission lines 1, 2 such as optical fibers transmitting an optical signal in opposite directions are provided as transmission buses. A master set 4 as a communication equipment and plural terminal devices 51-54 are inserted to each midpoint of them via interfaces (I/F)31-35, an optical signal from reception sides 1a, 2a is converted individually into an electric signal by photoelectric converters (O/E)14a, 14b, syntherized by an OR gate 18c and given to a device 17 as a reception signal. Then the optical signal from any directionis received by the device 17, the transmission signal from the device 17 is branched at an outputof a BF16b, given to electrooptic converters (E/O)15a, 15b and converted individually into an optical signal, which is transmitted in two ways.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、共通の伝送母線を介して相互間の通信を行な
う複数の通信装置を備える通信システムに好適な、光伝
送通信方式に関するものである。
[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an optical transmission communication system suitable for a communication system comprising a plurality of communication devices that communicate with each other via a common transmission bus. be.

〔従来の技術〕[Conventional technology]

複数の通信装置を共通の伝送母線へ接続し、各装置相互
間において通信を行なう方式は、空調制御装置、ビル管
理システム等において用いられておシ、中央の制御装置
と分散して配置した各種のセンサまたは制御対象機器と
の間のデータ伝送に用いられているが、電線路による伝
送母線を光伝送路へ更新する場合、または、電気的な妨
害を受は易い設置条件であり、当初から光伝送路を伝送
母線として用いる場合には、従来の各通信装置に付与さ
れている伝送手順(以下、プロトコル)を特に変更する
ことなく、電気信号による通信から光信号による通信へ
適合させることが要求されている。
The method of connecting multiple communication devices to a common transmission bus and communicating between each device is used in air conditioning control equipment, building management systems, etc. It is used for data transmission between sensors or controlled devices, but when updating the transmission bus line using an electric line to an optical transmission line, or because the installation conditions are susceptible to electrical interference, it is necessary to use it from the beginning. When using an optical transmission line as a transmission bus, it is possible to adapt communication from electrical signals to optical signal communication without making any particular changes to the transmission procedures (hereinafter referred to as protocols) assigned to each conventional communication device. requested.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

しかし、従来の通信装置と光伝送路との間へ単に電光変
換器および光電変換器を介挿し、単一の光伝送路へ結合
しようとすれば、光結合器または光分岐器を挿入しなけ
ればならず、これが各通信装置毎に光伝送路へ挿入され
るため、これらの光損失が累積し、光信号の伝送損失が
増大するものとなり、受信4号のレベル低下によシ信号
対雑音比が劣化するおそれを生ずる。
However, if you simply insert an electro-optic converter and a photo-electric converter between a conventional communication device and an optical transmission line to combine them into a single optical transmission line, you will need to insert an optical coupler or optical splitter. Since this is inserted into the optical transmission path for each communication device, these optical losses accumulate, increasing the transmission loss of the optical signal, and reducing the signal-to-noise level of the receiving signal 4. This may cause the ratio to deteriorate.

本発明は、従来のか\る要望および問題点を根本的憾解
決する目的を有し、従来のプロトコルを変更することな
く、伝送母線として光伝送路を用いることのできる極め
て効果的な、光伝送通信方式を提供するものである。
The present invention has the purpose of fundamentally solving the conventional demands and problems, and provides an extremely effective optical transmission method that can use an optical transmission line as a transmission bus without changing the conventional protocol. It provides a communication method.

〔問題を解決するための手段〕[Means to solve the problem]

前述の目的を達成するため、本発明はつぎの手段によっ
て構成するものとなっている。
In order to achieve the above-mentioned object, the present invention is constituted by the following means.

すなわち、伝送母線として互に反対方向へ光信号の伝送
を行なう第1および第2の光伝送路を設け、これら各光
伝送路の中間へ各通信装置を介在させたうえ、各光伝送
路の受信側から受信した各信号を合成して受信4号とし
、送信4号を分岐して各光伝送路の送信側へ送信すると
共に、各光伝送路の受信側から受信した各信号を各個に
増幅し各光伝送路の対応する送信側へ前記送信4号と合
成して送信するものとしている。
That is, first and second optical transmission lines are provided as transmission buses that transmit optical signals in opposite directions, each communication device is interposed between these optical transmission lines, and each optical transmission line is The signals received from the receiving side are combined into a receiving signal 4, and the transmitting signal 4 is branched and transmitted to the transmitting side of each optical transmission line, and each signal received from the receiving side of each optical transmission line is individually combined. It is assumed that the signal is amplified and combined with the transmission number 4 and transmitted to the corresponding transmission side of each optical transmission line.

〔作 用〕[For production]

したがって、各光伝送路(以下、伝送路)の光信号は、
中間へ介在した各通信装置毎に中継増幅されると共に、
双方向からの信号が合成されて受信4号となり、かつ、
送信4号が同時に双方向へ送信されるものとなり、実質
的に伝送路によって双方向伝送がなされるため、従来と
同一のプロトコルによる通信が自在となる。
Therefore, the optical signal on each optical transmission line (hereinafter referred to as transmission line) is
It is relayed and amplified by each communication device interposed in the middle, and
Signals from both directions are combined to form reception number 4, and
Since the transmission number 4 is simultaneously transmitted in both directions, and bidirectional transmission is essentially performed through the transmission path, communication can be performed using the same protocol as in the past.

〔実施例〕〔Example〕

以下、実施例を示す図によって本発明の詳細な説明する
Hereinafter, the present invention will be explained in detail with reference to figures showing examples.

第2図は、全構成を示すブロック図であり、矢印に示す
とおり、互に反対方向へ光信号の伝送を行なう光ファイ
バ等の伝送路1,2が伝送母線として設けられ、こ斤ら
の各中間には、インターフェイス(以下、I/F ) 
3□〜35を介し、通信装置として主装置4および複数
の端末装置5□〜5.が介在しており、各I/F 3□
〜35の各受信人力R0゜R2には、第1および第2の
伝送路1.2の各受信側か接続され、これらからの信号
がI/′F′・3□〜36  の内部において合成され
たうえ、各装置4゜51〜54へ受信出力Rから受信4
号として与えられる一方、各装置4,5□〜5.からの
送信4号は。
Figure 2 is a block diagram showing the entire configuration. As shown by the arrows, transmission lines 1 and 2 such as optical fibers that transmit optical signals in opposite directions are provided as transmission buses. At each intermediate point, there is an interface (hereinafter referred to as I/F)
A main device 4 and a plurality of terminal devices 5□ to 5.3 serve as communication devices via terminals 3□ to 35. is interposed, and each I/F 3□
Each receiving side of the first and second transmission lines 1.2 is connected to each receiving power R0°R2 of ~35, and the signals from these are combined inside I/'F'・3□~36. In addition, the reception output R is sent to each device 4゜51-54.
On the other hand, each device 4, 5□ to 5. Sent No. 4 from.

I’ll’・3□〜3.の送信人力Sへ与えられ、こ\
において分岐されてから送信出力S工、S、より各伝送
路1,2の送信側へ送信される本のとなっている。
I'll'・3□~3. Given to the sending human power S, this\
The signal is branched at , and then transmitted from the transmission output S to the transmission side of each transmission path 1 and 2.

なお、例えば、主装置4としては中央制御装置等が用“
いられると共に、端末装置5□〜5.としては、送受信
機能を有する温度、湿献圧力、流量、火寅等の各種セン
ナ、または、調節弁、ダンパ、・空調機器等の各種制御
対象機器が用いられ、この例では、主装置4の統制下に
各装置4,51〜54相互間におい゛て所定のプロトコ
ルによりデータ信号の送受信がなされ、各センサの検出
々力に応じて制御対象機器の制御が行なわれるものとな
っている。
Note that, for example, a central control device or the like may be used as the main device 4.
At the same time, the terminal devices 5□-5. In this example, various sensors such as temperature, moisture pressure, flow rate, and fire control sensors with transmitting and receiving functions, or control target devices such as control valves, dampers, and air conditioning equipment are used. Data signals are transmitted and received between the devices 4, 51 to 54 under control according to a predetermined protocol, and the equipment to be controlled is controlled according to the detection power of each sensor.

第1図は、I/IF・3のブロック図であり、各伝送路
の受信側1a、2aおよび送信側1’b 、 2bは、
光コネクタ11a、 1 lb、 12a、 12bに
より接続され、常時は動作中の光スィッチ(以下、08
)13の切替部を介し、受信側1a、2aは各個に光電
変換器(以下。
FIG. 1 is a block diagram of the I/IF 3, and the receiving sides 1a, 2a and the transmitting sides 1'b, 2b of each transmission path are as follows:
Optical switches (hereinafter referred to as 08
) 13, the receiving sides 1a and 2a each have a photoelectric converter (hereinafter referred to as "photoelectric converter").

Q” ) 14a、 14b ヘ接続されると共に、送
信側1b。
Q'') 14a, 14b and the transmitting side 1b.

2bは同様に電光変換器(以下、vo)15a、15b
へ接続されており、0・14aの出力は、バッファ回路
(以下、BF)16aを介し、通信装置(以下、装置)
17からのBF・16bを介する送信4号と共にORゲ
ート18aへ与えられ、こ\において合成されてから、
ドライバ′(以下、DR) 19aを経てし勺・15a
へ与えられている一方L o/F、・14bの出力はB
F・16eを介し、BF・16bの出力側から′分岐し
た送信4号と共にORゲート18bへ与えられ、□こ\
において合成されたうえ、DR・19bを介しし勺・1
5bへ与えられている。
Similarly, 2b is an electro-optical converter (hereinafter referred to as VO) 15a, 15b
The output of 0.14a is connected to the communication device (hereinafter referred to as device) via a buffer circuit (hereinafter referred to as BF) 16a.
It is sent to the OR gate 18a along with the transmission signal 4 from BF 17 via the BF 16b, and is combined there.
Driver' (hereinafter referred to as DR) 19a then 15a
On the other hand, the output of L o/F,・14b is B
Via F.16e, it is given to OR gate 18b along with the branched transmission signal 4 from the output side of BF.16b.
It was synthesized in
5b.

また、OIB ・1’4a、14bの各出力は、ORゲ
ート18eにより合成され、装置17へ受信4号として
送出されるものとなっている。
Further, the respective outputs of OIB 1'4a and 14b are combined by an OR gate 18e and sent to the device 17 as reception number 4.

このだめ、受信側1a、2aからの光信号は、OIB・
14a’、 14b  により各個に電気信号へ変換さ
れ、ORゲ」) 18eにより合成されてから受信4号
とじて装置17へ与えられるものとなり、いずれの方向
からの光信号も装置17において受信できると共に、装
置17からの送信々号は、BF・16bの出力において
分岐され、Elo・15a、15bへ与えられて各個に
光信号へ変換されたうえ、双方向へ送信されるものとな
るため、第2図のとおりに接続された他装置のすべてと
送受信が自在となり、電線路による伝送母線を用いた場
合と全く同一のプロトコルによシデータ信号の送受信が
行なえるものとなる。
In this case, the optical signals from the receiving sides 1a and 2a are
They are individually converted into electric signals by 14a' and 14b, combined by OR gate 18e, and then given to the device 17 as a receiving signal 4. Optical signals from any direction can be received by the device 17, and , the transmission signals from the device 17 are branched at the output of the BF 16b, given to the Elo 15a and 15b, each converted into an optical signal, and then transmitted in both directions. It becomes possible to freely transmit and receive data to and from all other devices connected as shown in Figure 2, and data signals can be transmitted and received using exactly the same protocol as when using a transmission bus line using an electric line.

一方、各01E ・14a、14bの各出力は、BF−
16a。
On the other hand, each output of each 01E, 14a, 14b is BF-
16a.

16c、ORゲート18a、18bおよびDR19a、
19bを介し、対応するVO・15a、15bへ与えら
れており、各BF、ORグー) 、 DRにおいて増幅
および波形整形がなされるため、受信側1a、2aから
の光信号が波形歪およびレベル低下を生じていても、こ
れらが修正された後、正規の波形およびレベルとして中
継のうえ送信側1b、2bへ送信される。
16c, OR gates 18a, 18b and DR19a,
19b to the corresponding VO, 15a and 15b, and amplification and waveform shaping are performed in each BF and DR, so the optical signals from the receiving sides 1a and 2a suffer from waveform distortion and level reduction. However, after these are corrected, they are relayed as regular waveforms and levels and then transmitted to the transmitting sides 1b and 2b.

たソし、I/’F ・3は、例えば商用電源ACを受電
し、電源部21において所望の局部電源Vとしてから各
部へ供給しているが、これの電圧を電源監視回路22が
監視しており、所定の電圧以下へ低下すればO8・13
  を復旧させるため、各切替部が各伝送路1,2の受
信側1a、2aと送信側1b、2bとを直接々続するも
のとなり、他装置間の通信に対し支障を与えないものと
なる。
However, the I/F 3 receives, for example, a commercial power supply AC, converts it into a desired local power supply V in the power supply section 21, and supplies it to each section, but the power supply monitoring circuit 22 monitors the voltage of this. If the voltage drops below a predetermined voltage, O8.13
In order to restore the system, each switching unit directly connects the receiving sides 1a, 2a and the transmitting sides 1b, 2b of each transmission line 1, 2, and does not interfere with communication between other devices. .

したがって、従来と同一の装置17を用い、これにI/
F・3の機能を付加するのみにより、伝送路1,2を用
いて従来と同一のプロトコルによる双方向通信が良好な
信号対雑音比によシ自在となる。
Therefore, the same device 17 as the conventional one is used, and
By simply adding the F.3 function, it becomes possible to perform bidirectional communication using the transmission lines 1 and 2 using the same protocol as before with a good signal-to-noise ratio.

また、波形整形およびレベル修正機能を有する中継動作
により、伝送路1,2の光伝送損失が増大しても支障を
生じないと共に、電源の障害時にも他装置間の通信に支
障を与えないものとなる。
In addition, due to the relay operation with waveform shaping and level correction functions, there is no problem even if the optical transmission loss of transmission lines 1 and 2 increases, and there is no problem with communication between other devices even in the event of a power supply failure. becomes.

たソし、バックアップ用の電源を設ければ、O8−13
を省略してもよく、BF・16a−16e 、DR−1
9a〜19eは状況に応じて省略し、同等の機能を0/
’E ・14a、14b 、E”0 ・15a+15b
中へ設けても同様であり、ORゲー)18a〜18eの
代りに混合回路、加算回路等を用いてもよく、場合によ
っては、装置17中へI/F・3を収容してもよい等、
種々の変形が自在である。
If you install a backup power source, O8-13
may be omitted, BF・16a-16e, DR-1
9a to 19e may be omitted depending on the situation, and the equivalent functions may be replaced with 0/
'E ・14a, 14b, E”0 ・15a+15b
The same is true even if it is provided inside the device 17. Mixing circuits, addition circuits, etc. may be used instead of the OR games 18a to 18e, and depending on the case, I/F 3 may be accommodated inside the device 17. ,
Various modifications are possible.

〔発明の効果〕〔Effect of the invention〕

以上の説明により明らかなとお9本発明によれば、簡単
な機能の付加によシ、従来の装置を用いながら光信号に
よる双方向伝送が自在になると共に、従来のプロトコル
を変更する必要がなく、共通の伝送路を用いる通信方式
において顕著な効果が得られる。
As is clear from the above explanation, according to the present invention, by adding simple functions, it is possible to freely transmit optical signals in both directions using conventional equipment, and there is no need to change the conventional protocol. , remarkable effects can be obtained in communication systems that use a common transmission path.

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

図は本発明の実施例を示し、第1図はI’ll’のブロ
ック図、第2図は全構成を示すブロック図である。 1.2・・・・伝送路(光伝送路)、1a、2a・・・
・受信側、1b、2b・・・・送信側、3,3.〜35
・・・・I/F (インターフェイス)、4・・・・主
装置(通信装置)、5□〜54・・・・端末装置(通信
装置)、11a、11b、12a、12b HHH+光
コネクタ、  14a、14b・・・・0(光電変換器
)、15a、15b・・・・VO(電光変換器)、17
・・・・装置(通信装置)、18a〜18c・・・・O
Rゲート。
The figures show embodiments of the present invention; FIG. 1 is a block diagram of I'll', and FIG. 2 is a block diagram showing the entire configuration. 1.2...Transmission line (optical transmission line), 1a, 2a...
- Receiving side, 1b, 2b... Transmitting side, 3, 3. ~35
...I/F (interface), 4...Main device (communication device), 5□~54...Terminal device (communication device), 11a, 11b, 12a, 12b HHH+ optical connector, 14a , 14b...0 (photoelectric converter), 15a, 15b...VO (electronic converter), 17
...Device (communication device), 18a to 18c...O
R gate.

Claims (1)

【特許請求の範囲】[Claims] 共通の伝送母線を介して相互間の通信を行なう複数の通
信装置を備える通信方式において、前記伝送母線として
互に反対方向へ光信号の伝送を行なう第1および第2の
光伝送路を設け、該各光伝送路の中間へ前記各通信装置
を介在させたうえ、前記各光伝送路の受信側から受信し
た各信号を合成して受信々号とし、送信々号を分岐して
前記各光伝送路の送信側へ送信すると共に、前記各光伝
送路の受信側から受信した各信号を各個に増幅し、前記
各光伝送路の対応する送信側へ前記送信々号と合成して
送信することを特徴とした光伝送通信方式。
In a communication system including a plurality of communication devices that communicate with each other via a common transmission bus, first and second optical transmission lines are provided as the transmission bus to transmit optical signals in opposite directions, Each of the communication devices is interposed in the middle of each of the optical transmission lines, and each signal received from the receiving side of each of the optical transmission lines is combined to form a received signal, and each transmitted signal is branched to transmit each of the optical signals. At the same time as transmitting to the transmitting side of the transmission line, each signal received from the receiving side of each of the optical transmission lines is individually amplified, combined with the transmitted signal and transmitted to the corresponding transmitting side of each optical transmission line. An optical transmission communication system characterized by:
JP59210389A 1984-10-09 1984-10-09 Optical transmission communication system Pending JPS6189733A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59210389A JPS6189733A (en) 1984-10-09 1984-10-09 Optical transmission communication system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59210389A JPS6189733A (en) 1984-10-09 1984-10-09 Optical transmission communication system

Publications (1)

Publication Number Publication Date
JPS6189733A true JPS6189733A (en) 1986-05-07

Family

ID=16588522

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59210389A Pending JPS6189733A (en) 1984-10-09 1984-10-09 Optical transmission communication system

Country Status (1)

Country Link
JP (1) JPS6189733A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6391983B1 (en) 1997-02-14 2002-05-21 Sola International Holdings, Ltd. Casting composition of aromatic polyvinyl monomer, polythiol and epoxy strain reducer

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58153431A (en) * 1982-03-08 1983-09-12 Niles Parts Co Ltd Optical communication system for car

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58153431A (en) * 1982-03-08 1983-09-12 Niles Parts Co Ltd Optical communication system for car

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6391983B1 (en) 1997-02-14 2002-05-21 Sola International Holdings, Ltd. Casting composition of aromatic polyvinyl monomer, polythiol and epoxy strain reducer

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