JPS5860843A - Fault judging circuit - Google Patents
Fault judging circuitInfo
- Publication number
- JPS5860843A JPS5860843A JP56159126A JP15912681A JPS5860843A JP S5860843 A JPS5860843 A JP S5860843A JP 56159126 A JP56159126 A JP 56159126A JP 15912681 A JP15912681 A JP 15912681A JP S5860843 A JPS5860843 A JP S5860843A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- converter
- optical
- comparator
- output
- 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
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
- H04B10/50—Transmitters
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Dc Digital Transmission (AREA)
- Small-Scale Networks (AREA)
- Optical Communication System (AREA)
Abstract
Description
【発明の詳細な説明】
本発明)よ、電気−光質換器(以下E10変換器という
。)の故f4判断回路に1−する。DETAILED DESCRIPTION OF THE INVENTION According to the present invention, 1 is applied to the f4 judgment circuit of an electro-optical converter (hereinafter referred to as an E10 converter).
便米、E10変m−を用いた光データパスシステムの濤
成例を第1図に示す。スター型光分岐器2Vよ任意の1
本のファイバ端子から入力した光信号を各ファイバ端子
に均等に分配するものである。FIG. 1 shows an example of the construction of an optical data path system using an E10 variable m-. Star type optical splitter 2V or any 1
Optical signals input from one fiber terminal are distributed equally to each fiber terminal.
スター型光分岐器2には、この元データバスシステムを
コントロールするパスシントローラl及び端末器3&〜
3Il&が尤7了イパ101,201a〜201nにて
接続されている。この元データバスシステムにおいて、
バスコントローラlまたは任意の端末器のE10変換器
が光信号が常時出力されるような状態で故障すると、元
データバスシステムは使用不可能となる。これを解決す
るため、従来はシステムを多重系の構成としたり、ある
いは゛各端末器のE10変換器の動作波長を予め定めて
おく勢の処置をとっていたが、このような方式では、回
路構成が複雑化し、高価となる欠点があった。The star type optical splitter 2 includes a path controller l that controls this original data bus system, and a terminal device 3 &~
3Il& are connected to each other at the respective terminals 101, 201a to 201n. In this original data bus system,
If the bus controller I or the E10 converter of any terminal device fails in such a way that optical signals are constantly output, the original data bus system becomes unusable. In order to solve this problem, in the past, the system was configured as a multiplex system, or the operating wavelength of the E10 converter of each terminal device was determined in advance. The disadvantage is that the circuit configuration becomes complicated and expensive.
さらにI10変換器で発生する誤りは従来電気信号にて
パリティを付加し、受イぎ端末器で光−電−気V換器に
て変換後、パリティ倉チェ、りし、受信−れたパリティ
と比較し、検出を行なっていた。Furthermore, errors that occur in the I10 converter are handled by adding parity to the conventional electrical signal, converting it with an optical-to-electrical V converter at the receiving terminal, and then converting the received parity into a parity check. Detection was performed by comparing with
この場合、−りの発生した一所つまfi W10変換器
なのかどうかを判定できない欠点がめる。In this case, there is a drawback that it is not possible to determine whether or not it is the fi W10 converter that is stuck at the location where the distortion has occurred.
本発#JAは、E10変換器から出力される元信号の一
部を元−電気変換器(以下0/E変換器という。)にて
受光し、その受光した元信号を電気信号に変換後積分し
、その積分波形から、元信号出力に障害が発生している
か否かを判断できるようにした回路ft提供するもので
ある。This #JA receives a part of the original signal output from the E10 converter with an original-to-electrical converter (hereinafter referred to as 0/E converter), and converts the received original signal into an electrical signal. The present invention provides a circuit ft that can perform integration and determine from the integrated waveform whether or not a failure has occurred in the original signal output.
次に本発明の実施例について図面を参照して説明する。Next, embodiments of the present invention will be described with reference to the drawings.
第2図は本発明の一実施例を示すプロ。FIG. 2 is a diagram showing an embodiment of the present invention.
り図でるる、入力信号l゛01はE10変換器1に入力
され、入力信号1011光信号102に変換出力すら電
気信号105に変換され、積分器4に出力する。As shown in the figure, the input signal l'01 is input to the E10 converter 1, the input signal 1011 is converted into an optical signal 102, and the output is also converted into an electrical signal 105, which is output to the integrator 4.
積分器出力106Fi比較器5に入力され、比較器5の
もう一方の一定値109と比較される。積分器出力信号
106が一定値109より大きいと、比較出力信号10
7は反転出力する。比較出力信号107はフリ、プ・フ
ロ、プ回路6へ入力され、セットされる。−担セットさ
れると、リセット信号110が入力されるまではリセッ
トされない。従って、信号10gがデータ伝速で岨りt
横巾した信号となる。The integrator output 106Fi is input to the comparator 5 and compared with the other constant value 109 of the comparator 5. If the integrator output signal 106 is greater than the constant value 109, the comparison output signal 10
7 outputs an inverted signal. The comparison output signal 107 is input to the FRI, PF, P circuit 6 and is set. - Once set, it will not be reset until the reset signal 110 is input. Therefore, the signal 10g has a data transmission speed of t
It becomes a wide signal.
上記の回路で故−判wT回路が構成される点につめて以
下a明する。第31伝)はマンチェスタコードの波形%
第3図(b)はRZ コードの波形でおる。The details of how the above-mentioned circuit constitutes a low-value wT circuit will be explained below. 31st edition) is the Manchester chord waveform%
FIG. 3(b) shows the waveform of the RZ code.
波形(mlがg10変換器lに入力され1光信号に変換
され、その一部の元信号がo/g俊換変換器て電気信号
105に変換された場合、その電気信号105は積分!
4にて積分され、波形(e)となる。又、波形(b)の
場合は検分器4にて検分された波形が(d)である、波
形(C)についてみると、データに関係なく電圧rtv
Mtt、また波形(d)については、データに関係なく
電圧はV、 ?越えることはない、比較器5において積
分器4からの出力信号106と一定値109(この信号
はマンチェスタコードの場合はvM。When the waveform (ml is input to the g10 converter l and converted to one optical signal, and part of the original signal is converted to the electrical signal 105 by the o/g conversion converter, the electrical signal 105 is integrated!
4, resulting in waveform (e). In addition, in the case of waveform (b), the waveform inspected by the detector 4 is (d). Regarding waveform (C), the voltage rtv
Regarding Mtt and waveform (d), regardless of the data, the voltage is V, ? In the comparator 5, the output signal 106 from the integrator 4 and a constant value 109 (this signal is vM in the case of the Manchester code) are not exceeded.
RZコードの場合rtV、である。)とを比較する。In the case of RZ code, it is rtV. ).
積分器4からの出力信号106が一定値109よシ大き
くなった時、比較器5からの出力信号107はLOVV
となる。出力信号106が一定値109より小さ・い場
合、比軟器5からの出力信号107は1(IGi(とな
る。When the output signal 106 from the integrator 4 becomes larger than the constant value 109, the output signal 107 from the comparator 5 becomes LOVV.
becomes. When the output signal 106 is smaller than the constant value 109, the output signal 107 from the ratio softener 5 becomes 1 (IGi).
フリ、プ・フロ、プ回路6は、比lIS!器5からの出
力1i1号107がり、OVVとなると、セットされ、
リセ。Furi, PuFuro, Pu circuit 6 is a metaphor! When the output 1i1 107 from the device 5 rises and becomes OVV, it is set,
Lyceum.
ト偏号110によりリセットされる。このフリップフロ
ップ回路6の出力15号108が誤りを検出した信号で
ある。It is reset by the polarization code 110. Output No. 15 108 of this flip-flop circuit 6 is a signal in which an error has been detected.
以上の如く、元信号に−9が発生している場合。As described above, when -9 occurs in the original signal.
本方式より−9を検出6j能である。また、元信号が常
時出力された状態の故障時には、0/E変換器3からの
信号105をSt分し、その漬汁出力信号1圓を比較器
5にて一定値109と比軟すると、常に積分出力信号1
06が大きいので、比軟器5からの出力16号107は
常にLOWとなり、フリップフロップ回路6はセットさ
れ、故障と判断される。With this method, it is possible to detect -9. In addition, in the case of a failure when the original signal is constantly output, the signal 105 from the 0/E converter 3 is divided into St, and the pickled juice output signal 1 circle is compared with a constant value 109 by the comparator 5. Always integral output signal 1
06 is large, the output No. 16 107 from the converter 5 is always LOW, the flip-flop circuit 6 is set, and it is determined that there is a failure.
な2、上記実施例では入力16号をマンチェスタコード
、RZコードを用いて説明したが、入力信号をこのコー
ド以外のコード音用いて、比較器5への一定値109t
−適宜設定し、Il成してもよい。2. In the above embodiment, input No. 16 was explained using the Manchester code and the RZ code, but if the input signal is a code sound other than this code, the constant value 109t to the comparator 5 is
- It may be set as appropriate and configured as Il.
またS元の一部を分岐するのに光分岐器2でなく、i1
0変換器にて発光信JiEjを元ファイノ(コードに集
光レンズにて集光する時に、集光レンズにて集光されな
い光を0/E変換してもよい。Also, to split a part of the S element, instead of using optical splitter 2, i1
When the 0 converter condenses the light emission signal JiEj into an original phino (code) using a condensing lens, the light that is not condensed by the condensing lens may be converted to 0/E.
本発明ri1以上説明したように、E10変換器からの
光信号の一部t−0/E変換器にて受光し、受光信号を
電気信号に変換した後、その電気信号を積分し、比較器
で一定値と比較し、一定値より検分波形が大さい場合は
、つま9、誤シ筐たは故障の場合、フリップフロップを
セットし、一定値より検分波形が小さい場合つま9正常
の場合はフリ、プ70.プをセットしない構成にするこ
とにより、回路構成が簡単で安価となシ、さらにE10
変換器での誤シをも検出する効果がある。The present invention ri1 As explained above, a part of the optical signal from the E10 converter is received by the t-0/E converter, the received light signal is converted into an electric signal, and then the electric signal is integrated and the comparator If the tested waveform is larger than the fixed value, set the flip-flop, and if the tested waveform is smaller than the fixed value, set the flip-flop. Free, Pu70. The circuit configuration is simple and inexpensive, and the E10
It is also effective in detecting errors in the converter.
第1図は従来の光データバスシステムの構成プロ、ツタ
図、第2図は本発明の一実廊例を示したプロ、り図、第
3図は各柚データコードの波形図及びその積分波形図で
ある。
1・・・電気光変換器、2・・・光分岐器、3・・・光
−電気変換器、4・・・検分器s5・・・比較器、6・
・・フリップフロップ回鮎・
代理人 弁理士 内 Jjt 晋第1図Figure 1 is a diagram showing the configuration of a conventional optical data bus system, Figure 2 is a diagram showing an example of the present invention, and Figure 3 is a waveform diagram of each Yuzu data code and its integral. FIG. DESCRIPTION OF SYMBOLS 1...Electro-optical converter, 2...Optical splitter, 3...Optical-to-electrical converter, 4...Detector s5...Comparator, 6...
・・Flip Flop Kaiyu・ Agent Patent Attorney: Susumu Jjt Figure 1
Claims (1)
力さILる光信号を光分岐器に上り一部分紋し、での分
岐され九九信号t−1光佃号から電気信号て変換する光
−電気変換器にて電気悟号に変換。 積分し、その横分波形を比較器の一方の人力とじ。 もう一方の入力を、一定値とし比較する比較1t−1°
することをI#倣とする故陣刊給回路。[Scope of Claims] 'The IL optical signal outputted by the electric-to-element converter that converts the retrograde Buddhist name into an optical signal goes up to the optical splitter, where it is partially printed, and the multiplication signal t-1 light is branched at the optical splitter. An optical-to-electrical converter converts the electric signal from the Tsukuda to the Electric Gogo. Integrate, and manually compile the horizontal component waveform on one side of the comparator. Comparison 1t-1° where the other input is set as a constant value.
The late group publication supply circuit which imitates I# to do.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56159126A JPS5860843A (en) | 1981-10-06 | 1981-10-06 | Fault judging circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56159126A JPS5860843A (en) | 1981-10-06 | 1981-10-06 | Fault judging circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5860843A true JPS5860843A (en) | 1983-04-11 |
Family
ID=15686801
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56159126A Pending JPS5860843A (en) | 1981-10-06 | 1981-10-06 | Fault judging circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5860843A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0514358A (en) * | 1991-06-27 | 1993-01-22 | Fujikura Ltd | Electrooptic conversion circuit |
JPH0726988U (en) * | 1994-06-06 | 1995-05-19 | 三洋電機株式会社 | Optical recording disc |
KR100479259B1 (en) * | 2002-10-11 | 2005-03-31 | 한국전자통신연구원 | Optical switch fault detecting method and apparatus using sequential optical pulse input |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55110086A (en) * | 1979-02-16 | 1980-08-25 | Fujitsu Ltd | Light output cut-off detecting system |
JPS55152434A (en) * | 1979-05-17 | 1980-11-27 | Kokusai Denshin Denwa Co Ltd <Kdd> | Light output monitoring system for light repeater |
JPS56119547A (en) * | 1980-02-23 | 1981-09-19 | Fujitsu Ltd | Detecting circuit for breaking of signal and mark rate |
JPS5769228A (en) * | 1980-10-18 | 1982-04-27 | Fuji Electric Co Ltd | Deterioration detection system for optical transmitting circuit |
-
1981
- 1981-10-06 JP JP56159126A patent/JPS5860843A/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55110086A (en) * | 1979-02-16 | 1980-08-25 | Fujitsu Ltd | Light output cut-off detecting system |
JPS55152434A (en) * | 1979-05-17 | 1980-11-27 | Kokusai Denshin Denwa Co Ltd <Kdd> | Light output monitoring system for light repeater |
JPS56119547A (en) * | 1980-02-23 | 1981-09-19 | Fujitsu Ltd | Detecting circuit for breaking of signal and mark rate |
JPS5769228A (en) * | 1980-10-18 | 1982-04-27 | Fuji Electric Co Ltd | Deterioration detection system for optical transmitting circuit |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0514358A (en) * | 1991-06-27 | 1993-01-22 | Fujikura Ltd | Electrooptic conversion circuit |
JPH0726988U (en) * | 1994-06-06 | 1995-05-19 | 三洋電機株式会社 | Optical recording disc |
KR100479259B1 (en) * | 2002-10-11 | 2005-03-31 | 한국전자통신연구원 | Optical switch fault detecting method and apparatus using sequential optical pulse input |
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