JPS6331322A - Optical repeater - Google Patents
Optical repeaterInfo
- Publication number
- JPS6331322A JPS6331322A JP61176042A JP17604286A JPS6331322A JP S6331322 A JPS6331322 A JP S6331322A JP 61176042 A JP61176042 A JP 61176042A JP 17604286 A JP17604286 A JP 17604286A JP S6331322 A JPS6331322 A JP S6331322A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- signal
- drop
- optical
- power
- 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
- 230000003287 optical effect Effects 0.000 title claims abstract description 44
- 238000012544 monitoring process Methods 0.000 claims description 12
- 230000005540 biological transmission Effects 0.000 abstract 3
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Landscapes
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Optical Communication System (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、光受信回路で電気信号に変換された受信信号
に監視信号を重畳して光通信回路へ出力する監視信号分
岐挿入回路と、電源のバックアップとして電池を有する
光中継器に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a supervisory signal drop-add circuit that superimposes a supervisory signal on a received signal converted into an electrical signal by an optical receiver circuit and outputs the superimposed signal to an optical communication circuit; This invention relates to an optical repeater that has a battery as a backup power source.
第2図はこの種の光中継器の従来例を示すブロック図で
ある。FIG. 2 is a block diagram showing a conventional example of this type of optical repeater.
光受信回路1は光信号を受信し、電気信号に変換して出
力する。監視信号分岐挿入回路4は、光受信回路1から
出力された受信信号に監視信号6(電源入力断、電池電
圧低下以外)、7(電源入力断、電池電圧低下)を重畳
し、光通信回路3に出力する。光通信回路3は監視信号
分岐挿入回路4からの信号を光信号に変換して出力する
。The optical receiving circuit 1 receives an optical signal, converts it into an electrical signal, and outputs the electrical signal. The supervisory signal add/drop circuit 4 superimposes supervisory signals 6 (other than power input disconnection and battery voltage drop) and 7 (power input disconnection and battery voltage decrease) on the received signal output from the optical receiver circuit 1, and outputs the supervisory signals 6 (other than power input disconnection and battery voltage decrease) to the received signal outputted from the optical receiver circuit 1. Output to 3. The optical communication circuit 3 converts the signal from the supervisory signal add/drop multiplexer 4 into an optical signal and outputs the optical signal.
上述した従来の光中継器は、Ti源が断して電池に切換
えられ、電池の出力電圧低下の時においても監視信号分
岐挿入回路が動作しているため、光中継器の消費電力が
大きく、電池の供給電力による動作時間が短くなる欠点
がある。In the conventional optical repeater described above, the power consumption of the optical repeater is large because the Ti source is disconnected and the switch is switched to the battery, and the monitoring signal drop-add circuit continues to operate even when the output voltage of the battery drops. There is a drawback that the operating time due to the power supplied by the battery is shortened.
本発明の光中継器は、電池に電源が切換えられた後、電
池電圧低下を示す監視信号が入力すると、監視信号分岐
挿入回路への電力供給を遮断する電源スイッチ回路と、
通常は光受信回路からの受信信号を監視信号分岐挿入回
路に出力し、監視信号分岐挿入回路から出力され、監視
信号の重畳された受信信号を光通信回路へ出力し、前記
の電池電圧低下を示す監視信号が入力すると、受信信号
を直接光通信回路へ出力する信号スイッチ回路とを有す
る。The optical repeater of the present invention includes a power switch circuit that cuts off power supply to the monitoring signal add/drop circuit when a monitoring signal indicating a battery voltage drop is input after the power source is switched to the battery;
Normally, the received signal from the optical receiver circuit is output to the supervisory signal drop-add circuit, and the received signal output from the supervisory signal add-drop circuit and on which the supervisory signal is superimposed is output to the optical communication circuit to prevent the battery voltage drop mentioned above. and a signal switch circuit that outputs the received signal directly to the optical communication circuit when the monitoring signal shown in FIG.
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1図は本発明の光中継器の一実施例のブロック図であ
る。FIG. 1 is a block diagram of an embodiment of an optical repeater according to the present invention.
・ 本実施例では、光受信回路1と光通信回路3の間に
信号スイッチ回路2が設けられ、さらに監視信号分岐挿
入回路4への電源8の供給をオン/オフする電源スイッ
チ回路5が設けられている。- In this embodiment, a signal switch circuit 2 is provided between the optical receiver circuit 1 and the optical communication circuit 3, and a power switch circuit 5 is further provided to turn on/off the supply of the power source 8 to the monitoring signal add-drop circuit 4. It is being
電源スインチ回路5は通常、電源8を監視信号分岐挿入
回路4へ供給しているが、電源断によりバックアップ用
電池に切換えられた後、監視43号7が電池電圧低下を
示すと、電i8の供給を遮断する。信号スイッチ回路2
は通常、光受信回路1からの信号を監視信号分岐挿入回
路4へ出力し。The power supply switch circuit 5 normally supplies the power supply 8 to the supervisory signal add/drop circuit 4, but after switching to the backup battery due to a power outage, when the monitor 43 No. 7 indicates a decrease in battery voltage, the power switch circuit 5 Cut off the supply. Signal switch circuit 2
Normally, the signal from the optical receiving circuit 1 is output to the monitoring signal add/drop multiplexer circuit 4.
その後監視信号分岐挿入回路4から出力され、監視信号
6,7の重畳された信号を光通信回路3に出力するが、
監視信号7が前記電池電圧低下を示すと、光受信回路1
からの信号を光通信回路3へそのまま出力する。Thereafter, a signal is output from the supervisory signal drop/add circuit 4 and a superimposed signal of the supervisory signals 6 and 7 is output to the optical communication circuit 3.
When the monitoring signal 7 indicates the battery voltage drop, the optical receiving circuit 1
The signal from the optical communication circuit 3 is output directly to the optical communication circuit 3.
以上説明したように本発明は、電源断によりバックアッ
プ用電池に切換わった後、電池電圧低下が発生した場合
、監視信号分岐挿入回路への電源供給を停止し、受信信
号をそのまま光通信回路に出力することにより、光中継
器の消費電力を小さく抑えることができ、電池の供給電
力による光中継器の動作時間を長くできる効果がある。As explained above, in the present invention, when the battery voltage drops after switching to the backup battery due to a power outage, the power supply to the supervisory signal drop-and-drop circuit is stopped, and the received signal is sent directly to the optical communication circuit. By outputting the signal, the power consumption of the optical repeater can be kept low, and the operating time of the optical repeater using the power supplied by the battery can be extended.
第1図は本発明の光中継器の一実施例のブロック図、第
2図は従来例のブロック図である。
l・・・光受信回路。
2・・・信号スイッチ回路。
3・・・光通信回路、
4・・・監視信号分岐挿入回路。
5・・・電源スイッチ回路。
6・・・監視信号(電源入力断、電池電圧低下以外)。
7・・・監視信号(電源入力断、電池電圧低下)、8・
・・電源。
第1図
第2図FIG. 1 is a block diagram of an embodiment of an optical repeater according to the present invention, and FIG. 2 is a block diagram of a conventional example. l...Optical receiving circuit. 2...Signal switch circuit. 3... Optical communication circuit, 4... Supervisory signal drop/add circuit. 5...Power switch circuit. 6...Monitoring signal (other than power input disconnection or battery voltage drop). 7... Monitoring signal (power input cutoff, battery voltage drop), 8...
··power supply. Figure 1 Figure 2
Claims (1)
を重畳して光通信回路へ出力する監視信号分岐挿入回路
と、電源のバックアップとして電池を有する光中継器に
おいて、 前記電池に電源が切換えられた後、電池電圧低下を示す
監視信号が入力すると、監視信号分岐挿入回路への電力
供給を遮断する電源スイッチ回路と、 通常は光受信回路からの受信信号を監視信号分岐挿入回
路に出力し、監視信号分岐挿入回路から出力され、監視
信号の重畳された受信信号を光通信回路へ出力し、前記
の電池電圧低下を示す監視信号が入力すると、受信信号
を直接光送信回路へ出力する信号スイッチ回路とを有す
ることを特徴とする光中継器。[Scope of Claims] A supervisory signal drop-add circuit that superimposes a supervisory signal on a received signal converted into an electrical signal by an optical receiver circuit and outputs it to an optical communication circuit, and an optical repeater having a battery as a backup power source, After the power is switched to the battery, when a monitoring signal indicating a battery voltage drop is input, a power switch circuit cuts off the power supply to the monitoring signal add/drop circuit, and normally the received signal from the optical receiver circuit is sent to the monitoring signal. The monitor signal is output from the drop-drop/add circuit, and the received signal on which the monitor signal is superimposed is output to the optical communication circuit. When the monitor signal indicating the battery voltage drop is input, the received signal is directly output to An optical repeater comprising a signal switch circuit that outputs to a transmitting circuit.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP61176042A JPS6331322A (en) | 1986-07-25 | 1986-07-25 | Optical repeater |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP61176042A JPS6331322A (en) | 1986-07-25 | 1986-07-25 | Optical repeater |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6331322A true JPS6331322A (en) | 1988-02-10 |
Family
ID=16006700
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP61176042A Pending JPS6331322A (en) | 1986-07-25 | 1986-07-25 | Optical repeater |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6331322A (en) |
-
1986
- 1986-07-25 JP JP61176042A patent/JPS6331322A/en active Pending
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