JPS5879355A - Signal transmission device - Google Patents
Signal transmission deviceInfo
- Publication number
- JPS5879355A JPS5879355A JP17740481A JP17740481A JPS5879355A JP S5879355 A JPS5879355 A JP S5879355A JP 17740481 A JP17740481 A JP 17740481A JP 17740481 A JP17740481 A JP 17740481A JP S5879355 A JPS5879355 A JP S5879355A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- transmitter
- circuit
- receiver
- photocoupler
- 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
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/20—Repeater circuits; Relay circuits
- H04L25/26—Circuits with optical sensing means, i.e. using opto-couplers for isolation
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Dc Digital Transmission (AREA)
- Small-Scale Networks (AREA)
Abstract
Description
【発明の詳細な説明】
この発明は、複数の送信器と受信器間で２本の信号線を
使用してディジタル信号の伝送を行う信号伝送装置に関
するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a signal transmission device that transmits digital signals between a plurality of transmitters and receivers using two signal lines.
送信器と受信器で構成される信号伝送装置のシステム接
続例を第１因に示す、第１図において。In FIG. 1, a system connection example of a signal transmission device including a transmitter and a receiver is shown as a first factor.
Ｔｔ、Ｔｔｓ・・・・・、■、は送信器、Ｒｕ−Ｒ鵞、
・・・・・・ｅＲ。Tt, Tts..., ■ is the transmitter, Ru-R goose,
・・・・・・eR.
は受ｌｌｍ−Ｉｓ −ｌｘ は信号線である。なお、２
本の信号ｌ１ｌｓ １ｍ は２芯の信号線な用いれ
ばよい、なお、以下％＜個別に表わす必要のないときは
送信器はＴ、受信器はＲを用いる。llm-Is-lx is a signal line. In addition, 2
A two-core signal line may be used for the real signal l1ls 1m. Note that below %<T is used for the transmitter and R is used for the receiver when it is not necessary to express them individually.
一般にディジタル信号を送信器Ｔより受信器Ｒへ伝送す
るにはディジタル信号な電圧（または電Ｒ）の有無によ
る直列信号に変換して伝送している。この場合、２本の
信号１１ｍ１ｔｅｌ諺 は往路と復路の極性を有し、信
号１ａｌ＊ ｌｘ の布設時に極性を合わせる工
事が必要となる欠点な有する。Generally, in order to transmit a digital signal from a transmitter T to a receiver R, the digital signal is converted into a serial signal depending on the presence or absence of a voltage (or electric current R) before being transmitted. In this case, the two signals 11m1tel proverb have polarities for the outgoing route and the return route, which has the disadvantage that work to match the polarity is required when installing the signal 1al*lx.
２本の信号線１＊ 、 １ｍ を無極性とするｋは
、従来は送信器Ｔでディジタル信号を高周波信号に変換
して送出し、受信器Ｒで高周波信号をディジタル信号に
復調する方式をとっていた。Traditionally, the two signal lines 1* and 1m are non-polar, and the transmitter T converts the digital signal into a high-frequency signal and sends it out, and the receiver R demodulates the high-frequency signal into a digital signal. was.
高周波信号を使用し２本の信号線１１ ｍ １ｇ を
無極性で使用する場合の例として、１台の送信器Ｔと１
台の受信器３間での信号伝送な行う場合のブーツク図を
第２図に示す。As an example of using high frequency signals and using two signal lines 11 m 1 g with no polarity, one transmitter T and one transmitter 1
A boot diagram for signal transmission between two receivers 3 is shown in FIG.
第２図において、送信器■は信号作成回路１１と変調回
路１２で構成され、変調回路１２の出力側は出力端子１
ｓ、１４に接続されている。受信器Ｒは復調回路１１と
信号判別回路１８で構成され、復調回路１１０入力側は
入力端子１５．ｌ１ｉｋ接続されている。送信器■の出
力端子１３．１４と受信器Ｒの入力端子ＩＳ、１１ｉ間
は２本の信号＠Ｊ 、Ｉｓ で接続されている。In FIG. 2, the transmitter ■ consists of a signal generation circuit 11 and a modulation circuit 12, and the output side of the modulation circuit 12 is the output terminal 1.
s, 14. The receiver R is composed of a demodulation circuit 11 and a signal discrimination circuit 18, and the input side of the demodulation circuit 110 is connected to an input terminal 15. l1ik is connected. The output terminals 13 and 14 of the transmitter ■ and the input terminals IS and 11i of the receiver R are connected by two signals @J and Is.
次に動作について説明する。送信器Ｔの信号作成回路１
１でディジタル信号を直列形態で作成し。Next, the operation will be explained. Signal generation circuit 1 of transmitter T
1 creates a digital signal in serial form.
変調回路１２へ渡す。変調回路１２で高周波信号に変換
し、出力端子ＩＳ、１４より出力する。It is passed to the modulation circuit 12. It is converted into a high frequency signal by the modulation circuit 12 and outputted from the output terminal IS, 14.
一方、受信器Ｒでは入力端子１５，１＠より入力された
高周波信号は復調回路１１でディジタル信号に変換され
信号判別回路１８へ渡さ４る。高周波信号は正負の極性
を有するが、復調回路１Ｔでは半波整流、または全波整
流を行い、高周波信号をディジタル信号に変換するので
、２本の信号線１１．１．は無極性として使用できる。On the other hand, in the receiver R, the high frequency signal inputted from the input terminal 15, 1@ is converted into a digital signal by the demodulation circuit 11 and passed to the signal discrimination circuit 18. Although the high frequency signal has positive and negative polarities, the demodulation circuit 1T performs half-wave rectification or full-wave rectification to convert the high frequency signal into a digital signal, so the two signal lines 11.1. can be used as non-polar.
従来の信号伝送装置は、上記のように２本の信号＠ｔ、
、ｔ、に極性を持たさないため、ディジタル信号を高周
波信号に変換して伝送していた。このためディジタル信
号を直接伝送するよりも伝送速度が遅い欠点を有してい
た。The conventional signal transmission device transmits two signals @t, as described above.
, t, have no polarity, the digital signal is converted into a high frequency signal and transmitted. For this reason, it has the disadvantage that the transmission speed is slower than when directly transmitting digital signals.
この発明は、上述の欠点を除去するためになされたもの
で、ディジタル信号を直接伝送し信号伝送適度を速くす
るとともに、信号線を無極性として使用できる信号伝送
装置を提供することを目的としている。This invention was made to eliminate the above-mentioned drawbacks, and aims to provide a signal transmission device that can directly transmit digital signals, speed up signal transmission, and use signal lines as non-polar. .
以下、この発明の一実施例を第３図に基づいて説明する
。An embodiment of the present invention will be described below with reference to FIG.
第３図において、送信器Ｔは信号作成回路１１と信号注
入回路１９より構成される。また、信号注入回路１ｓは
抵抗器Ｒ，，Ｒｔ とトランジスタＴＲで構成される。In FIG. 3, the transmitter T is composed of a signal generation circuit 11 and a signal injection circuit 19. Further, the signal injection circuit 1s is composed of resistors R, , Rt and a transistor TR.
信号作成回路１１の出力は抵抗器Ｒ１を介してトランジ
スタＴＲのペースへ接続される。トランジスタＴＲのペ
ースは抵抗器Ｒ８を介してアース端子（共通電源端子）
Ｋ接続される。また、アース端子は出力端子１４へ出力
されている。トランジスタＴＲのコレクタは正電源（Ｖ
ｃ＊）へ接続され、エミッタは出力端子１３へ接続され
ている。The output of the signal generating circuit 11 is connected to the base of the transistor TR via a resistor R1. The pace of transistor TR is connected to the ground terminal (common power supply terminal) through resistor R8.
K-connected. Further, the ground terminal is output to the output terminal 14. The collector of transistor TR is connected to the positive power supply (V
c*), and its emitter is connected to the output terminal 13.
受信器Ｒは信号受信回路２０と信号判別回路１８より構
成される。信号受信回路２０は抵抗＠ Ｒｓ −Ｒ４，
およびホトカプラＰＣｘ、ＰＣｓより構成される。受信
器Ｒの入力端子１５は抵抗器Ｒ３を介してホトカプラＰ
ＣＩの１次側ダイオードのアラＰＣｓ の１次側ダイオ
ードのカンード側とホトカプラＰＣ８の１次側ダイオー
ドの７ノード側に接続されている。ホトカプラＰＣｓ
、Ｐｃｔの２次側トランジスタのコレクタとコレクタが
結合され、また、エミッタとエミッタが結合されて信号
判別回路１１へ接続されている。ホトカプラＰＣｔ−Ｐ
Ｃ愈の２次側トランジスタのコレクタ結合点は抵抗器Ｒ
４で正電圧（Ｖｃ＊）Ｋ接続され、ホトカプラＰＣｘ、
ＰＣｓはワイヤードＯＲ接続となつ【いる。送信器Ｔの
出力端子１３．１４は信号線１１ ｅ １１ で受
信器Ｒの入力端子１５．１１ｉＫ接続されている。送信
器Ｔの出力端子ＩＳＫはディジタル信号として正電圧（
ＶＣＩ ） ”論理１′か無電圧１論理０”がコード化
されて出力される。The receiver R is composed of a signal receiving circuit 20 and a signal discriminating circuit 18. The signal receiving circuit 20 is a resistor @Rs −R4,
and photocouplers PCx and PCs. The input terminal 15 of the receiver R is connected to the photocoupler P via a resistor R3.
It is connected to the cand side of the primary side diode of CI and the 7th node side of the primary side diode of photocoupler PC8. Photocoupler PCs
, Pct, the collectors of the secondary transistors are coupled together, and the emitters are coupled together and connected to the signal discrimination circuit 11. Photocoupler PCt-P
The collector connection point of the secondary side transistor of C is the resistor R.
Positive voltage (Vc*) K is connected at 4, photocoupler PCx,
The PCs are wired OR connected. The output terminal 13.14 of the transmitter T is connected to the input terminal 15.11iK of the receiver R by a signal line 11 e 11 . The output terminal ISK of the transmitter T receives a positive voltage (
VCI) "Logic 1' or no voltage 1 logic 0" is coded and output.
第３因の例では出力端子１３′は入力端子１５に接続さ
れているため、入力端子１５に正電圧（Ｙｅｓ ）１論
Ｉｌｌ″が印加された場合ホトカプラＰｅｗ の１次側
メイオードＫｔｌ１ｍが流れ、入力端子１５が無電圧１
論Ｉｌθ″の場合はホトカプラＰｃｔの１次側ダイオー
ドは非導通となるようにホトカプラＰＣｓ が動作して
信号を受信できる。In the example of the third cause, the output terminal 13' is connected to the input terminal 15, so when a positive voltage (Yes) Ill'' is applied to the input terminal 15, the primary side meiode Ktl1m of the photocoupler Pew flows, Input terminal 15 is no voltage 1
In the case of logic Ilθ'', the photocoupler PCs operates so that the primary side diode of the photocoupler Pct becomes non-conductive, and the signal can be received.
この場合、ホトカプラＰｃｔは動作せず、信号受信は関
与しない。送信器Ｔの出力端子１３．１４と受信器Ｒの
入力端子１５．１１１の接続が上記と逆になった場合、
すなわち出力端子１３が入力端子１６Ｋ、出力端子１４
が入力端子１５に接続された場合は送信器Ｔの出力端子
１３に出力されたディジタル信号が受信器Ｒの入力端子
１８に入力され、ホトカプラＰｃｔが動作して信号を受
信できる。この場合はフォトカップラＰｃ１ は動作せ
ず、信号受信には関与しない。In this case, the photocoupler Pct does not operate and signal reception is not involved. If the connection between the output terminal 13.14 of the transmitter T and the input terminal 15.111 of the receiver R is reversed to the above,
That is, the output terminal 13 is the input terminal 16K, and the output terminal 14 is the input terminal 16K.
is connected to the input terminal 15, the digital signal output to the output terminal 13 of the transmitter T is input to the input terminal 18 of the receiver R, and the photocoupler Pct operates to receive the signal. In this case, the photocoupler Pc1 does not operate and is not involved in signal reception.
なお、上記では動作説明は簡単のため１台の送ａＳと１
台の受信器を用いて説明したが、第１図に示すような複
数台の送信器と複数台の受信器を使用するシステムも適
用できるのは自明である。In addition, in the above, since the operation explanation is simple, only one sending aS and one sending aS are used.
Although the explanation has been made using one receiver, it is obvious that a system using multiple transmitters and multiple receivers as shown in FIG. 1 can also be applied.
以上述べたようにこの発明の信号伝送装置は。As described above, the signal transmission device of the present invention is as follows.
２本の信号線を使用して送信器、受信器間で信号伝送を
行う噛合、信号線を無極性で使用しディジタル信号を伝
送できる特徴を有するため信号線の布設が容易で、かつ
高速の信号伝送が行える信号伝送装置を提供できる利点
がある。It has two signal wires that are interlocked to transmit signals between the transmitter and receiver, and the signal wires are non-polar and can transmit digital signals, making it easy to install signal wires and high-speed. There is an advantage that a signal transmission device capable of signal transmission can be provided.
第１図は信号伝送装置のシステム接続例を示すブロック
図、９２図は従来の信号伝送装置を示すプロツク因、第
３図はこの発明の信号伝送装置な示すプルツク９的構成
図である。
図中、■は送信器、Ｒは受信器ｓ ｌｌ ａ ｌｌ
は信号線、１１は信号作成回路、１３．１４は出力端子
、１５．ｌｌｉは入力端子、１＄は信号判別回路、１ｓ
は信号注入１１Ｍ、２０は信号受信回路、Ｒ３−Ｒ４は
抵抗器、ＴＲはトランジスタ、ＰＣＩ−ＰＣｓ はホト
カプラである。なお、図中の同一符号は同一または相当
部分を示す。
第１図FIG. 1 is a block diagram showing an example of system connection of a signal transmission device, FIG. 92 is a block diagram showing a conventional signal transmission device, and FIG. 3 is a block diagram showing a block diagram of a signal transmission device of the present invention. In the figure, ■ is the transmitter, and R is the receiver.
11 is a signal generation circuit, 13.14 is an output terminal, and 15. is a signal line. lli is the input terminal, 1$ is the signal discrimination circuit, 1s
is a signal injection circuit 11M, 20 is a signal receiving circuit, R3-R4 are resistors, TR is a transistor, and PCI-PCs is a photocoupler. Note that the same reference numerals in the figures indicate the same or corresponding parts. Figure 1
Claims (1)
う信号伝送装置において、前記送信器に正電圧の有無で
構成するディジタル信号を出力する信号注入回路を備え
、前記受信器に２個のホトカプラを備え、これら２個の
ホトカプラの１次側ダイオードは逆並列に接続されて信
号＠に結合さｔ、前記２個のホトカプラの２次側トラン
ジスタは並列接続とした信号受信回路を備えたことを特
命とする信号伝送装置。A signal transmission device that performs signal transmission between a transmitter and a receiver using two signal lines, the transmitter being equipped with a signal injection circuit that outputs a digital signal consisting of the presence or absence of a positive voltage; A signal receiving circuit is provided with two photocouplers, the primary side diodes of these two photocouplers are connected in antiparallel and coupled to the signal t, and the secondary side transistors of the two photocouplers are connected in parallel. A signal transmission device that is specially designed to be equipped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17740481A JPS5879355A (en) | 1981-11-04 | 1981-11-04 | Signal transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17740481A JPS5879355A (en) | 1981-11-04 | 1981-11-04 | Signal transmission device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5879355A true JPS5879355A (en) | 1983-05-13 |
Family
ID=16030335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17740481A Pending JPS5879355A (en) | 1981-11-04 | 1981-11-04 | Signal transmission device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5879355A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6089154A (en) * | 1983-10-20 | 1985-05-20 | Sanyo Electric Co Ltd | Transmission circuit |
| US4697942A (en) * | 1985-04-08 | 1987-10-06 | Tokyo Electric Co., Ltd. | Ribbon shifting device for a printing apparatus |
| JPS6346034A (en) * | 1986-08-13 | 1988-02-26 | Fuji Electric Co Ltd | Self-diagnosing system for electronic equipment connected to communication line |
-
1981
- 1981-11-04 JP JP17740481A patent/JPS5879355A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6089154A (en) * | 1983-10-20 | 1985-05-20 | Sanyo Electric Co Ltd | Transmission circuit |
| US4697942A (en) * | 1985-04-08 | 1987-10-06 | Tokyo Electric Co., Ltd. | Ribbon shifting device for a printing apparatus |
| JPS6346034A (en) * | 1986-08-13 | 1988-02-26 | Fuji Electric Co Ltd | Self-diagnosing system for electronic equipment connected to communication line |
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