JPS61173556A - Optical data link device - Google Patents

Optical data link device

Info

Publication number
JPS61173556A
JPS61173556A JP60016194A JP1619485A JPS61173556A JP S61173556 A JPS61173556 A JP S61173556A JP 60016194 A JP60016194 A JP 60016194A JP 1619485 A JP1619485 A JP 1619485A JP S61173556 A JPS61173556 A JP S61173556A
Authority
JP
Japan
Prior art keywords
power supply
data link
link device
switch
supply voltage
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
JP60016194A
Other languages
Japanese (ja)
Inventor
Masayuki Tabuchi
正行 田渕
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP60016194A priority Critical patent/JPS61173556A/en
Publication of JPS61173556A publication Critical patent/JPS61173556A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To stop the operation of a receiving and a transmitting circuit securely by turning off a power source when the detected voltage of a source voltage detecting circuit drops to a preset voltage. CONSTITUTION:When the A-side power source 30 of an optical data link device 10 is turned off, the falling of a source voltage V is as shown by the curve in a figure (a) in the absence of the source voltage detecting circuit 12 and a switch 13, but the source voltage detecting circuit 12 and switch 13 are added to operate the switch 13 securely with an optional set voltage Vs as shown in a figure (b) and cutting off the source voltage V, thereby preventing the transmitting circuit 6 from malfunctioning. Further, the source voltage detecting circuit 12 turns on the switch 13 with the preset voltage Vs even during the rising of the source voltage as shown in a figure (c).

Description

【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、電源電圧の変動に対応することのできる光
データリンク装置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 data link device that can cope with fluctuations in power supply voltage.

〔従来の技術〕[Conventional technology]

第３図は従来の元データリンク装置を示す回路図である
。この図において、１は電源端子、２はＴＴＬＬ／ベル
で信号が出力される出力端子、３は接地端子、４はＴＴ
Ｌｖペルで信号が入力される入力端子、５は電流−電圧
変換回路を構成する受（ｌ！回路、６は電圧−亀流変換
素子である送信回路、Ｔは光−電流変換素子であるＰＩ
Ｎダイオード、８は電流−光変換素子である発光ダイオ
ード（以下ＬＥＤという）、９は元ファイバ、１０は元
データリンク装置、１１は前記光ファイバ９とデータリ
ンク装置１０の接続部のコネクタである。FIG. 3 is a circuit diagram showing a conventional original data link device. In this figure, 1 is a power supply terminal, 2 is an output terminal where a signal is output at TTLL/bell, 3 is a ground terminal, and 4 is a TTLL/bell signal output terminal.
5 is a receiver (l! circuit) that constitutes a current-voltage conversion circuit, 6 is a transmission circuit that is a voltage-current conversion element, and T is a PI that is a light-current conversion element.
8 is a light emitting diode (hereinafter referred to as LED) which is a current-light conversion element; 9 is a source fiber; 10 is a source data link device; 11 is a connector for connecting the optical fiber 9 and the data link device 10. .

従来の光データリンク装置は上記のように構成され、入
力端子４にディジタル信号が入力されると送信回路６が
動作し、ＬＥＤ８により光が発光されて、その光が光フ
ァイバＳを通じて他のシステムにデータとして送信され
る。The conventional optical data link device is configured as described above, and when a digital signal is input to the input terminal 4, the transmitting circuit 6 is activated, the LED 8 emits light, and the light is transmitted through the optical fiber S to other systems. is sent as data.

次Ｋ、光ファイバ９を通じて送られてきた光はＰＩＮダ
イオード１により電流に変換され、受信回路５により増
幅され、電圧比較器でディジタル信号として出力端子２
よりシステムへデータとして入力される。Next, the light sent through the optical fiber 9 is converted into a current by the PIN diode 1, amplified by the receiver circuit 5, and output as a digital signal by the voltage comparator to the output terminal 2.
input into the system as data.

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

上記のよ５な従来の元データリンク装置１０は第４図の
よ５ＫＡ側とＢｌ！Ｉに光ファイバ９を介して設置され
使用される。なお、２０は送受信装置、３０は電源であ
る。The conventional original data link device 10 as shown in FIG. It is installed and used in the optical fiber I via the optical fiber 9. Note that 20 is a transmitting/receiving device, and 30 is a power source.

第４図において、片方（例えはＡ側）の電源３Ｇを０Ｆ
ＦＫしたとき、電圧の立下りに数秒かかると元データリ
ンク装置１０内の送信回路６が誤動作し、Ｂ側にデータ
ではない信号が送信される。In Figure 4, one side (for example, side A) of the power supply 3G is set to 0F.
When FK is performed, if it takes several seconds for the voltage to fall, the transmitting circuit 6 in the original data link device 10 malfunctions, and a signal that is not data is transmitted to the B side.

この時、Ｂ＠のシステムは電源ＯＮの状態だから、誤信
号をデータとして受信するという問題点があった。At this time, since the B@ system was powered on, there was a problem in that it received erroneous signals as data.

この発明は、かかる問題点を解決するためＫなされたも
ので、誤動作を防止できる光データリンク装置を得るこ
とを目的とする。The present invention has been made to solve these problems, and an object of the present invention is to provide an optical data link device that can prevent malfunctions.

〔問題点を解決するための手段〕[Means for solving problems]

この発明に係る光データリンク装置は、電源電圧を検出
する電源電圧検出回路と、この電源電圧検出回路で検出
された電源電圧があらかじめ設定した設定電圧まで低下
したとき動作して電源を退所するスイッチとを設けたも
のである。The optical data link device according to the present invention includes a power supply voltage detection circuit that detects the power supply voltage, and operates when the power supply voltage detected by the power supply voltage detection circuit drops to a preset voltage, and removes the power supply. It is equipped with a switch.

〔作用〕[Effect]

この発明においては、電源電圧が設定電圧まで低下した
ときこれが電源電圧検出回路により検出され、この検出
結果に基づいて動作するスイッチにより、元データリン
ク装置に供給する電源電圧を退所する。In this invention, when the power supply voltage drops to a set voltage, this is detected by the power supply voltage detection circuit, and the power supply voltage supplied to the original data link device is removed by a switch operated based on the detection result.

〔実施例〕〔Example〕

第１図はこの発明の一実施例を示す回路図であり、１〜
１１は第３図に示したものと同一のものであり、１２は
電源電圧検出回路、１３はこの電源電圧検出回路１２に
より動作するスイッチである。FIG. 1 is a circuit diagram showing one embodiment of the present invention.
Reference numeral 11 is the same as that shown in FIG. 3, 12 is a power supply voltage detection circuit, and 13 is a switch operated by this power supply voltage detection circuit 12.

上記のように構成された光データリンク装置１０におい
ては、第４図のＡ側の電源３０をＯＦＦにした時、電源
電圧検出回路１２．スイッチ１３のないときの電源電圧
Ｖの立下りは第２図（ａ）の曲線のようになるわけであ
るが、電源電圧検出回路１２とスイッチ１３を付加する
ことにより、第２図（ｂ）のように、任意の設定電圧Ｖ
、でスイッチ１３を確実に動作させて電源電圧Ｖを退所
することができ、送信回路６のｖＡ動作を防止すること
ができる。In the optical data link device 10 configured as described above, when the power supply 30 on the A side in FIG. 4 is turned off, the power supply voltage detection circuit 12. The fall of the power supply voltage V when there is no switch 13 is as shown in the curve shown in FIG. 2(a), but by adding the power supply voltage detection circuit 12 and the switch 13, it becomes as shown in FIG. Any set voltage V
, the switch 13 can be operated reliably to remove the power supply voltage V, and the vA operation of the transmitting circuit 6 can be prevented.

また電源電圧検出回路１２は供給電圧の立上りの時にも
第２図（ｅ）のように、あらかじめ設定された設定電圧
■８でスイッチ１３をＯＮさせることができる。Also, the power supply voltage detection circuit 12 can turn on the switch 13 at a preset voltage 8 as shown in FIG. 2(e) even when the supply voltage rises.

〔発明の効果〕〔Effect of the invention〕

この発明は以上説明したとおり、電源電圧を検出する電
源電圧検出回路と、この電源電圧検出回路の検出電圧が
あらかじめ設定した設定電圧まで低下したとき動作して
電源を連断するスイッチとを設置すたので、電源電圧が
設定電圧以下になると確実に受信回路、送信回路の動作
を止めることができるという効果がある。As explained above, this invention includes a power supply voltage detection circuit that detects the power supply voltage and a switch that operates to disconnect the power supply when the detection voltage of the power supply voltage detection circuit drops to a preset voltage. Therefore, there is an effect that the operation of the receiving circuit and the transmitting circuit can be reliably stopped when the power supply voltage becomes lower than the set voltage.

【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である元データリンク装置
の回路図、第２１Ｎ（ａ）〜（ｅ）は従来およびこの発
明の詳細な説明するための電圧波形図。 第３図は従来の光データリンク装置の回路図、第４図は
従来の問題点を説明するための回路図である。 −において、１は電源端子、２は出力端子、３は接地端
子、４は入力端子、５は受信回路、６は送信回路、Ｔは
ＰＩＮダイオード、８はＬＥＤ。 ９は元ファイバ、１０は光データリンク装置、１１はコ
ネクタ、１２は電源電圧検出回路、１３はスイッチであ
る。 なお、各図中の同一符号は同一または相当部分を示す。 代理人　大　岩　増　雄　　（外２名）第１図 す 第２図 （ａ）　　　　　（ｂ） 一昨間 第３図 第４図FIG. 1 is a circuit diagram of an original data link device which is an embodiment of the present invention, and 21N(a) to (e) are voltage waveform diagrams for explaining the conventional and present invention in detail. FIG. 3 is a circuit diagram of a conventional optical data link device, and FIG. 4 is a circuit diagram for explaining the problems of the conventional device. -, 1 is a power supply terminal, 2 is an output terminal, 3 is a ground terminal, 4 is an input terminal, 5 is a receiving circuit, 6 is a transmitting circuit, T is a PIN diode, and 8 is an LED. 9 is a source fiber, 10 is an optical data link device, 11 is a connector, 12 is a power supply voltage detection circuit, and 13 is a switch. Note that the same reference numerals in each figure indicate the same or corresponding parts. Agent Masuo Oiwa (2 others) Figure 1 Figure 2 (a) (b) The day before yesterday Figure 3 Figure 4

Claims (1)

【特許請求の範囲】[Claims] 光データリンク装置において、電源電圧を検出する電源
電圧検出回路と、この電源電圧検出回路で検出された電
源電圧があらかじめ設定した設定電圧まで低下したとき
動作して電源を遮断するスイッチとを設けたことを特徴
とする光データリンク装置。An optical data link device is provided with a power supply voltage detection circuit that detects the power supply voltage and a switch that operates to cut off the power supply when the power supply voltage detected by the power supply voltage detection circuit drops to a preset voltage. An optical data link device characterized by:
JP60016194A 1985-01-28 1985-01-28 Optical data link device Pending JPS61173556A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60016194A JPS61173556A (en) 1985-01-28 1985-01-28 Optical data link device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60016194A JPS61173556A (en) 1985-01-28 1985-01-28 Optical data link device

Publications (1)

Publication Number Publication Date
JPS61173556A true JPS61173556A (en) 1986-08-05

Family

ID=11909697

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60016194A Pending JPS61173556A (en) 1985-01-28 1985-01-28 Optical data link device

Country Status (1)

Country Link
JP (1) JPS61173556A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0265313A (en) * 1988-08-30 1990-03-06 Omron Tateisi Electron Co Hybrid relay

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0265313A (en) * 1988-08-30 1990-03-06 Omron Tateisi Electron Co Hybrid relay

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