JPS6160029A - Optical signal transmitter - Google Patents
Optical signal transmitterInfo
- Publication number
- JPS6160029A JPS6160029A JP59181880A JP18188084A JPS6160029A JP S6160029 A JPS6160029 A JP S6160029A JP 59181880 A JP59181880 A JP 59181880A JP 18188084 A JP18188084 A JP 18188084A JP S6160029 A JPS6160029 A JP S6160029A
- Authority
- JP
- Japan
- Prior art keywords
- light emitting
- fiber cable
- optical
- optical fiber
- emitting element
- 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
- H04B10/40—Transceivers
- H04B10/43—Transceivers using a single component as both light source and receiver, e.g. using a photoemitter as a photoreceiver
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Optical Communication System (AREA)
- Light Guides In General And Applications Therefor (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、例えばルームニアコンディショナ、パッケー
ジニアコンディショナインバータ機室内−室外信号伝送
やパッケージニアコンディショナ集中制御システムの信
号伝送等の低速度・短距離光通信を行なう製品全般に適
用し得る光゛信号伝送装置に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention is applicable to low-speed signal transmission between room near conditioners, package near conditioner inverters, indoor-outdoor signal transmission, and package near conditioner centralized control systems. -Relates to optical signal transmission equipment that can be applied to all products that perform short-distance optical communications.
第４図および第５図はそれぞれ従来の基本的な光信号伝
送装置の構成を示す図であり、１は送受信信号の制御回
路で他の機器とのインターフェース機能および信号の直
−並列変換などを行なう。２は送信器で発光ダイオード
とそのドライブ回路からなる。３は受信器でフォトダイ
オード受光素子とその増幅・波形成形回路からなる。５
は光ファイバケーブルで４は光ファイバケーブル５と送
信器２と受信器３との接続用光コネクタである０６は光
の分校器で光ファイバケーブル１本で双方向伝送を行な
う時に使用するものである０
〔発明が解決しようとしている問題点〕前記従来の方式
は次の欠点を有する。Figures 4 and 5 are diagrams each showing the configuration of a conventional basic optical signal transmission device. 1 is a control circuit for transmitting and receiving signals, and performs interface functions with other equipment and serial-parallel conversion of signals, etc. Let's do it. 2 is a transmitter consisting of a light emitting diode and its drive circuit. 3 is a receiver consisting of a photodiode light receiving element and its amplification/waveform shaping circuit. 5
is an optical fiber cable, and 4 is an optical connector for connecting the optical fiber cable 5, transmitter 2, and receiver 3. 06 is an optical splitter, which is used when performing bidirectional transmission with a single optical fiber cable. 0 [Problems to be solved by the invention] The conventional system has the following drawbacks.
（１）双方向伝送を行なう時、送ＩＮ器と受信器を各２
セツト必、要とし、コネクタ、ケーブルを含め高価にな
る。(1) When performing bidirectional transmission, connect two transmitter and receiver
It requires a complete set and is expensive, including connectors and cables.
（２）光コネクタを必要とし、また、光コネクタの組立
、光ファイバの端面加工に専用工具や高度の技術を必要
とする。(2) An optical connector is required, and special tools and advanced technology are required for assembling the optical connector and processing the end face of the optical fiber.
本発明は前記従来の問題点を解消するために提案された
もので、短距離光通信を低価格で構成すると＼もに、性
別の知識・技術・工具を必要としないで光ファイバと送
・受イａ器の接続を可能にし、さらに、１本の光ファイ
バケーブルで双方向通信を可能ならしめ得る光信号伝送
装【を提供することを目的とするものである。The present invention was proposed in order to solve the above-mentioned conventional problems, and it is possible to construct short-distance optical communication at a low cost, and to connect optical fibers and transmission without requiring special knowledge, skills, or tools. It is an object of the present invention to provide an optical signal transmission device which enables connection of a receiver and also enables bidirectional communication with a single optical fiber cable.
ｃ問題点を解決するための手段〕
本発明による光信号伝送装置紘、一方の送受イム信号の
制御回路と、この制御回路に接続された周波数変可復調
回路と、この回路に接続された受光索子兼用の発光素子
と、他方の送受信信号の制御回路と、この制御回路に接
続された周波数賀詞復調回路と、この回路に接続された
受光索子兼用の発光素子と、前記各発光素子間において
双方向信号伝送を行なう１本の光ノア・１゛バケーブル
とを具備してなることを特徴とするものである。Means for Solving Problem c] An optical signal transmission device according to the present invention includes a control circuit for one transmission/reception time signal, a frequency variable demodulation circuit connected to this control circuit, and a light receiving circuit connected to this circuit. A light emitting element that also serves as a light emitting element, a control circuit for the other transmission/reception signal, a frequency signal demodulation circuit connected to this control circuit, a light emitting element that also serves as a light receiving element connected to this circuit, and a light emitting element that also serves as a light receiving element, and The device is characterized in that it is equipped with one optical fiber cable for bidirectional signal transmission.
本発明によれば、発光素子（例えば発光ダイオード）を
光発信素子および受光素子として兼用させることにより
部品数を減少させるとともに、伝送信号を高周波で変３
１４復調することにより発光素子の受光特性の外来光に
対する影響を無くシ、これらにより光コネクタを使用し
ないで光ファイバケーブルと送受信器の接続を可能なら
しめ、前記従来の問題点を解消し得るようＫしたもので
ある。According to the present invention, the number of parts can be reduced by using a light emitting element (for example, a light emitting diode) as both a light emitting element and a light receiving element, and the transmission signal can be changed at high frequency.
14 demodulation eliminates the influence of the light receiving characteristics of the light emitting element on external light, thereby making it possible to connect the optical fiber cable and the transmitter/receiver without using an optical connector, thereby solving the above-mentioned conventional problems. K.
本発明の一実施例を添付図面な参照して詳細に説明する
。An embodiment of the present invention will be described in detail with reference to the accompanying drawings.
第１図は本発明の一実施例の構成を示す図であり、第１
図において、１は送・受信信号の制御回路、７は信号の
周波数変調・復調回路、８は受光素子を兼ねた発光素子
例えば発光ダイオードである。FIG. 1 is a diagram showing the configuration of one embodiment of the present invention.
In the figure, 1 is a control circuit for transmitting and receiving signals, 7 is a signal frequency modulation/demodulation circuit, and 8 is a light emitting element, such as a light emitting diode, which also serves as a light receiving element.
第２図は第１図の構成の具体例を示すもので符号解読器
１２、リレー１３、変換器１６、スイッチノアが送受信
４５号の制御回路１１ｔＣ対応し１７はスイッチ、１６
はスイッチの各々を符号化し直列信号にする変換器、１
２は受信した直列信号を並列信号に変換する符号解読器
、この結果によりリレー１３を厄動する。復調器１０゜
共振器１１．変調器Ｉ４、発振器１５は周波数変調・復
調回路２に相当し、ノ４は変調器で１５は変調器ノ４の
変調周波数を決定する発振器である。１０はり調器で特
定周波数に同調・検波し、直列信号を出力する０１１は
特定周波数和対する共振器である。８は発光ダイオード
で９は発光ダイオード８の電流制限抵抗器、１８は送信
のための発光制御用トランジスタである。第３図（〜、
（Ｂ）はそれぞれ本発明における光ファイバケーブル５
と発光ダイオード８の接続を表わしたものである。FIG. 2 shows a specific example of the configuration shown in FIG. 1, in which the code decoder 12, relay 13, converter 16, and switch NOA correspond to the control circuit 11tC of transmitter/receiver No. 45;
is a converter that encodes each of the switches into a serial signal, 1
2 is a code decoder that converts the received serial signal into a parallel signal, and the result is used to troubleshoot the relay 13. Demodulator 10° resonator 11. The modulator I4 and the oscillator 15 correspond to the frequency modulation/demodulation circuit 2, No. 4 is a modulator, and No. 15 is an oscillator that determines the modulation frequency of the modulator No. 4. 011 is a resonator for a specific frequency sum, which tunes and detects a specific frequency using a beam tuner and outputs a serial signal. 8 is a light emitting diode, 9 is a current limiting resistor for the light emitting diode 8, and 18 is a light emission control transistor for transmission. Figure 3 (~,
(B) is the optical fiber cable 5 in the present invention, respectively.
This shows the connection between the light emitting diode 8 and the light emitting diode 8.
上記本発明の一実施例の作用について説明する。発光ダ
・イオード８は半導体のＰＮ接合に順方向に電流を流し
Ｎ形、Ｐ形５Ａ域へ正孔・電子が過剰に注入される。こ
の過剰なキャリアは再結合し、そのエネルギの一部が光
として放出される。またＰＮ接合にその禁止帯幅以上の
エネルギを持りた光が轟たると正孔・電子対が形成され
光電流となる。このようにＰ−Ｎ接合においては電気−
光、光−電気変換特性を持つ。これを利用し１本のプラ
スティック光ファイバケーブルあるいは石英ファイバケ
ーブルを利用し双方向通信を行なう。信号の発信は第２
図において、スイッチ１７を閉じると、変換器１６によ
りスイッチ個有の符号を発生し、並列−直列変換して変
調器１４に出力される。変換符号の語長は接続されるス
イッチの個数によって決定される。変調器Ｉ４では４０
ＫＨ２前後の変調用発振器を内蔵し変換器１６から入力
されるデータに従いたとえば、データ１の時は発振出カ
ＯＮ、データ０のときは発振出力ＯＦＦ とする。The operation of the above embodiment of the present invention will be explained. The light emitting diode 8 causes a current to flow in the forward direction through the PN junction of the semiconductor, and excessive holes and electrons are injected into the N type and P type 5A regions. This excess carrier recombines and some of its energy is emitted as light. Furthermore, when light with an energy greater than the bandgap width hits the PN junction, hole-electron pairs are formed, resulting in a photocurrent. In this way, in the P-N junction, the electrical
Has light and photo-electrical conversion properties. Using this, two-way communication is performed using a single plastic optical fiber cable or quartz fiber cable. The signal transmission is the second
In the figure, when a switch 17 is closed, a code unique to the switch is generated by a converter 16, converted from parallel to serial, and output to a modulator 14. The word length of the conversion code is determined by the number of connected switches. 40 for modulator I4
It has a built-in modulation oscillator around KH2, and according to the data input from the converter 16, for example, when the data is 1, the oscillation output is turned on, and when the data is 0, the oscillation output is turned off.
この出力で発光制御用トランジスタ１８を０Ｎ１０ＦＦ
” Ｌ、−ＸＡ光ダイオード８の光信号として出力する
。この光信号り光ファイバケーブル５を通して相手側に
受信されると同時に自回路の復調器１０．符号解読器Ｊ
２に入力される７が符号化により判別することができる
。This output sets the light emission control transistor 18 to 0N10FF.
"L, -XA is output as an optical signal from the photodiode 8. This optical signal is received by the other party through the optical fiber cable 5, and at the same time, it is sent to the demodulator 10 and code decoder J in its own circuit.
7 input to 2 can be determined by encoding.
信号の受信は相手側発振器から前記と同様な方法で発信
された光信号が光ファイバケーブル５を通して発光ダイ
オード８で受光し微弱な光電流が復調器１０に入力され
る。復調器１０に内蔵する増幅器でこれを十分増幅し、
共握器ＩＩによりａ 、ｆ＝側の変調周波数に同調する
。同調周波数以外の周波数やノイズなどはここで減衰・
除去される。目的の周波数を取り出し検波した信号を復
調器１０より出力する。この信号は相手側入力スイッチ
個有の符号化された直列信号で符号Ｍ読器１２に入力さ
れ等読することにより特定の出力、たとえばリレー１３
を開閉することができる。To receive the signal, an optical signal is transmitted from the oscillator of the other party in the same manner as described above, is received by the light emitting diode 8 through the optical fiber cable 5, and a weak photocurrent is input to the demodulator 10. This is sufficiently amplified by the amplifier built in the demodulator 10,
It is tuned to the modulation frequency on the a and f= sides by the synchronizer II. Frequencies other than the tuning frequency and noise are attenuated here.
removed. A signal obtained by extracting and detecting the target frequency is output from the demodulator 10. This signal is a coded serial signal unique to the input switch on the other side, and is input to the code M reader 12, and by reading it, a specific output, for example, a relay 13, is input.
can be opened and closed.
符号％読器１２、リレー１３、変換器１６およびスイッ
チ１７０機能をマイクロコンピュータに置き換えて、デ
ータの通信を行なうことも出来る。It is also possible to replace the functions of the code % reader 12, relay 13, converter 16 and switch 170 with a microcomputer for data communication.
以上により本発明によれば以下の如き優れた効果が奏せ
られるものである。As described above, according to the present invention, the following excellent effects can be achieved.
（１）通常の発光素子例えば発光ダイオード１個で発光
・受光でき、低価格の双方向光信号伝送装置が構成でき
る。(1) A single ordinary light-emitting element such as a light-emitting diode can emit and receive light, and a low-cost bidirectional optical signal transmission device can be constructed.
（２）信号を変調・復調することにより外乱光の影響が
無くなる。これにより発光素子、光７・１・ｆバケーブ
ルの遮光の必要が無くなり光コネクタを使用しなくても
よくなる。(2) The influence of disturbance light is eliminated by modulating and demodulating the signal. This eliminates the need for shielding the light emitting element and the optical 7/1/f cable, and eliminates the need to use an optical connector.
（３） （２）項により第３図（５）、 （１３）の
ような発光ダイオードと光ファイバケーブルの接続が可
能である。また、光ファイバケーブルの端面加工も例え
ば鋭利なカッターによる切断だけでよく、これにより光
ファイバケーブルの配線・接続が簡単になるのでコスト
が安価になる。(3) According to item (2), it is possible to connect a light emitting diode and an optical fiber cable as shown in Fig. 3 (5) and (13). Further, the end face of the optical fiber cable can be processed by simply cutting it with a sharp cutter, for example, which simplifies the wiring and connection of the optical fiber cable, thereby reducing costs.
第１図は本発明の一実施例の構成を示す図、第２図は第
１図の部分詳細図、落３図Ｑす、（Ｂ）はそれぞれ本発
明の一実施例における光ファイバケーブルと発光ダ１オ
ードとの接続を示す図、第４図および第５図はそれぞれ
従来例を示す図である。
１・・・送受・ｆシ信号の制御回路、５・・・光ファイ
バケーブル、７・・・周波数変調復調回路、８・・・発
光ダイオード。FIG. 1 is a diagram showing the configuration of an embodiment of the present invention, FIG. 2 is a partial detailed view of FIG. FIGS. 4 and 5 are diagrams showing the connection between the light emitting diode and the ode, respectively, showing conventional examples. DESCRIPTION OF SYMBOLS 1... Control circuit for transmission/reception/f signal, 5... Optical fiber cable, 7... Frequency modulation demodulation circuit, 8... Light emitting diode.
Claims (1)
れた周波数変調復調回路と、この回路に接続された受光
素子兼用の発光素子と、他方の送受信信号の制御回路と
、この制御回路に接続された周波数変調復調回路と、こ
の回路に接続された受光素子兼用の発光素子と、前記各
発光素子間において双方向信号伝送を行なう１本の光フ
ァイバケーブルとを具備してなることを特徴とする光信
号伝送装置。One transmission/reception signal control circuit, a frequency modulation demodulation circuit connected to this control circuit, a light emitting element that also serves as a light receiving element connected to this circuit, and the other transmission/reception signal control circuit, connected to this control circuit. a frequency modulation demodulation circuit, a light emitting element that also serves as a light receiving element connected to this circuit, and one optical fiber cable that performs bidirectional signal transmission between each of the light emitting elements. optical signal transmission equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59181880A JPS6160029A (en) | 1984-08-31 | 1984-08-31 | Optical signal transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59181880A JPS6160029A (en) | 1984-08-31 | 1984-08-31 | Optical signal transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6160029A true JPS6160029A (en) | 1986-03-27 |
Family
ID=16108479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59181880A Pending JPS6160029A (en) | 1984-08-31 | 1984-08-31 | Optical signal transmitter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6160029A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63198240U (en) * | 1987-06-12 | 1988-12-20 | ||
| JPH06154002A (en) * | 1992-11-16 | 1994-06-03 | Kenko Kk | Footwear for driver |
-
1984
- 1984-08-31 JP JP59181880A patent/JPS6160029A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63198240U (en) * | 1987-06-12 | 1988-12-20 | ||
| JPH06154002A (en) * | 1992-11-16 | 1994-06-03 | Kenko Kk | Footwear for driver |
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