JPS62139149U - - Google Patents
Info
- Publication number
- JPS62139149U JPS62139149U JP1986022838U JP2283886U JPS62139149U JP S62139149 U JPS62139149 U JP S62139149U JP 1986022838 U JP1986022838 U JP 1986022838U JP 2283886 U JP2283886 U JP 2283886U JP S62139149 U JPS62139149 U JP S62139149U
- Authority
- JP
- Japan
- Prior art keywords
- optical
- transmitting
- signal
- receiving
- transmitter
- 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 claims description 7
- 230000005856 abnormality Effects 0.000 claims description 4
- 239000013307 optical fiber Substances 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Monitoring And Testing Of Transmission In General (AREA)
- Optical Communication System (AREA)
Description
第１図は本考案の一実施例に係る光信号送受信
回路の構成図、第２図は第１図に示す電源異常検
出器の詳細構成図である。
１……工作機械、２……ＮＣ制御装置、３……
信号発生器、４……信号判断器、５……光送信機
、６……光受信機、７……光フアイバ、８……電
源異常検出器、１１……クロツク発生器、８１…
…シフトレジスタ、８２……アンドゲート、８３
……インバータ。
FIG. 1 is a block diagram of an optical signal transmitting/receiving circuit according to an embodiment of the present invention, and FIG. 2 is a detailed block diagram of the power abnormality detector shown in FIG. 1. 1...Machine tool, 2...NC control device, 3...
Signal generator, 4... Signal judge, 5... Optical transmitter, 6... Optical receiver, 7... Optical fiber, 8... Power abnormality detector, 11... Clock generator, 81...
...Shift register, 82...And gate, 83
...Inverter.
Claims (1)
光フアイバを介して伝送する光信号送受信回路に
おいて、前記送信機を無信号状態時に点灯させる
負論理デイジタル信号発生器を送信側に設け、前
記光フアイバから出力される光信号が所定時間消
灯状態を続けたとき前記送信側に異常が生じたと
判断する異常検出手段を受信側に設けたことを特
徴とする光信号送受信回路。 In an optical signal transmitting/receiving circuit that transmits an output signal of an optical transmitter provided on a transmitting side to a receiving side via an optical fiber, a negative logic digital signal generator is provided on the transmitting side to turn on the transmitter when there is no signal, An optical signal transmitting/receiving circuit characterized in that an abnormality detecting means is provided on a receiving side for determining that an abnormality has occurred on the transmitting side when the optical signal output from the optical fiber continues to be off for a predetermined period of time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986022838U JPS62139149U (en) | 1986-02-21 | 1986-02-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986022838U JPS62139149U (en) | 1986-02-21 | 1986-02-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62139149U true JPS62139149U (en) | 1987-09-02 |
Family
ID=30820599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986022838U Pending JPS62139149U (en) | 1986-02-21 | 1986-02-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62139149U (en) |
-
1986
- 1986-02-21 JP JP1986022838U patent/JPS62139149U/ja active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS62139149U (en) | ||
| JPH0632510B2 (en) | Remote control transmitter | |
| JPH01142231U (en) | ||
| JPS62133448U (en) | ||
| JPS63171049U (en) | ||
| JPS61122590U (en) | ||
| JPS63139398U (en) | ||
| JPS60254929A (en) | Wired remote control system | |
| JPS5881698U (en) | Telemeter device | |
| JPS6022079U (en) | Failure detection device for remote monitoring and control equipment | |
| JPS62135290U (en) | ||
| JPS61124110U (en) | ||
| JPS63107445U (en) | ||
| JPS58145574U (en) | Wiring search device | |
| JPH02143628U (en) | ||
| JPS63131542U (en) | ||
| JPS5824078U (en) | High voltage measuring device | |
| JPS5799060A (en) | Signal transmitter | |
| JPH01156635U (en) | ||
| JPS6333492U (en) | ||
| JPH02108198U (en) | ||
| JPS62119125U (en) | ||
| JPS62133437U (en) | ||
| JPS6386646U (en) | ||
| JPS62120788U (en) |