JPS6231570B2 - - Google Patents
Info
- Publication number
- JPS6231570B2 JPS6231570B2 JP55032103A JP3210380A JPS6231570B2 JP S6231570 B2 JPS6231570 B2 JP S6231570B2 JP 55032103 A JP55032103 A JP 55032103A JP 3210380 A JP3210380 A JP 3210380A JP S6231570 B2 JPS6231570 B2 JP S6231570B2
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- sub
- main
- coaxial cable
- monitoring
- 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.)
- Expired
Links
- 238000012544 monitoring process Methods 0.000 claims description 28
- 239000003990 capacitor Substances 0.000 claims description 8
- 230000008878 coupling Effects 0.000 description 6
- 238000010168 coupling process Methods 0.000 description 6
- 238000005859 coupling reaction Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 4
- 230000005856 abnormality Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Landscapes
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Description
【発明の詳細な説明】
本発明は付加的に使用される副回路等において
用いるのに適した監視回路に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a monitoring circuit suitable for use in additionally used sub-circuits and the like.
主回路に対して付加的に使用され、同軸ケーブ
ルによつて主回路に結合される副回路の例とし
て、主回路としての送信機に対する、副回路とし
ての送信局発や周波数モニタがある。これらは元
来、主回路としわの送信機と同一筐体内に設置さ
れることが可能なものであり、そのようにして設
置されることも多い。しかしながらこれらの副回
路を臨時に使用することが必要となり、または主
回路に設置されたものが故障して代替的にこれら
のものを使用することが必要になる場合がある。 An example of a sub-circuit that is used in addition to the main circuit and is coupled to the main circuit by a coaxial cable is a transmitting station generator or a frequency monitor as a sub-circuit for a transmitter as the main circuit. These can originally be installed in the same housing as the main circuit and the wrinkle transmitter, and are often installed in this way. However, it may be necessary to use these sub-circuits occasionally, or there may be cases where the one installed in the main circuit breaks down and it becomes necessary to use these sub-circuits instead.
このような場合、主回路と副回路との間の目的
とする信号の授受は同軸ケーブルを通じて行なわ
れるとともに、副回路において必要とする電源も
同軸ケーブルを経て、主回路から送られることが
多い。これは別に電源用の電線を用いて、主・副
両回路を接続する煩を避けるためである。 In such cases, the intended signals are exchanged between the main circuit and the sub-circuit via a coaxial cable, and the power required by the sub-circuit is often also sent from the main circuit via the coaxial cable. This is to avoid the trouble of connecting both the main and sub circuits using separate power wires.
しかしながら、副回路の動作状態等を監視する
ための監視情報を主回路に送ることが必要な場
合、これらの監視情報を送るための別の電線を用
いて主・副両回路を接続しなければならなかつ
た。これは接続時手間がかゝるだけでなく、接続
用電線やこれを接続するための接栓や端子等を必
要とし、装置の小形化や可搬性の向上のために好
ましくない。 However, if it is necessary to send monitoring information to the main circuit to monitor the operating status of the sub-circuit, it is necessary to connect both the main and sub-circuits using separate wires for sending this monitoring information. It didn't happen. This not only requires a lot of time and effort during connection, but also requires a connecting wire, a plug, a terminal, etc. for connecting the wire, which is not preferable for miniaturizing the device and improving portability.
本発明はこのような従来技術の欠点を除去しよ
うとするものであつて、その目的は、主・副両回
路を接続する同軸ケーブルに電源電圧を重畳して
電源供給を行なうとともに、さらに副回路におけ
る監視情報の主回路に対する伝送も、電源供給電
流を増減することで行なうことによつて、同軸ケ
ーブル以外の接続線を必要としない監視回路を提
供することにある。この目的を達成するため、本
発明の監視回路においては、交流の主信号の授受
と同時に副回路に対する直流の電源供給を行なう
同軸ケーブルを介して副回路を主回路に付加し得
るように構成されているシステムにおいて、主回
路および副回路の主信号端子１８，３６と該同軸
ケーブルとをコンデンサ１５，３２を介して接続
し、主回路の副回路電源出力端子１９および副回
路の電源入力端子３７と該同軸ケーブルとをチヨ
ークコイル１６，３３を介して接続し、副回路で
監視情報が発生した際に該チヨークコイル１６，
３３を介して流れる電源供給電流を直流的に一定
値変化させる手段を副回路に具えるとともに、該
チヨークコイル１６，３３を介して流れる電源供
給電流の直流的変化を検出する手段を主回路に具
えて、副回路における監視情報を主回路へ伝達す
ることを特徴としている。 The present invention aims to eliminate such drawbacks of the prior art, and its purpose is to supply power by superimposing a power supply voltage on the coaxial cable that connects both the main and sub circuits, and also to supply power to the coaxial cable that connects both the main and sub circuits. The purpose of this invention is to provide a monitoring circuit that does not require connection lines other than coaxial cables by transmitting the monitoring information to the main circuit by increasing or decreasing the power supply current. In order to achieve this object, the monitoring circuit of the present invention is configured such that a sub-circuit can be added to the main circuit via a coaxial cable that simultaneously sends and receives an AC main signal and supplies DC power to the sub-circuit. In the system, the main signal terminals 18, 36 of the main circuit and the sub circuit are connected to the coaxial cable via the capacitors 15, 32, and the sub circuit power output terminal 19 of the main circuit and the power input terminal 37 of the sub circuit are connected. and the coaxial cable are connected via the check coils 16, 33, and when monitoring information is generated in the sub circuit, the check coils 16, 33 are connected to the coaxial cable.
The sub-circuit is provided with means for changing the power supply current flowing through the choke coils 16 and 33 by a constant DC value, and the main circuit is provided with means for detecting a DC change in the power supply current flowing through the choke coils 16 and 33. Additionally, monitoring information in the sub circuit is transmitted to the main circuit.
以下、実施例について説明する。 Examples will be described below.
図は本発明の監視回路の一実施例の構成を示す
ブロツク図である。図において、１は主回路、２
は副回路であつて、３は主回路１と副回路２とを
接続する同軸ケーブルである。 The figure is a block diagram showing the configuration of one embodiment of the monitoring circuit of the present invention. In the figure, 1 is the main circuit, 2
is a sub-circuit, and 3 is a coaxial cable connecting the main circuit 1 and the sub-circuit 2.
主回路１において、１１は主要部、１２は入力
端子、１３は出力端子、１４は電源端子、１５は
結合コンデンサ、１６はチヨークコイル、１７は
直列抵抗、１８は主信号端子、１９は副回路電源
出力端子、２０Ａ，２０Ｂは監視情報入力端子で
ある。 In the main circuit 1, 11 is the main part, 12 is the input terminal, 13 is the output terminal, 14 is the power supply terminal, 15 is the coupling capacitor, 16 is the choke coil, 17 is the series resistor, 18 is the main signal terminal, 19 is the sub circuit power supply Output terminals 20A and 20B are monitoring information input terminals.
主要部１１は、例えば主回路１が送信機である
場合は、送信信号を発生するための送信回路であ
つて、入力端子１２の入力信号によつて送信信号
を発生し、出力端子１３から出力する。主要部１
１において必要とする電源は電源端子１４を経て
供給される。同軸ケーブル３を経て副回路２との
間で授受される主信号は、結合コンデンサ１５、
主信号端子１８を経て主要部１１に接続される。 For example, when the main circuit 1 is a transmitter, the main part 11 is a transmission circuit for generating a transmission signal, and generates a transmission signal in response to an input signal at an input terminal 12, and outputs it from an output terminal 13. do. Main part 1
1, the necessary power is supplied through the power supply terminal 14. The main signal exchanged with the sub circuit 2 via the coaxial cable 3 is connected to the coupling capacitor 15,
It is connected to the main part 11 via the main signal terminal 18.
副回路２において必要とする電源は、副回路電
源出力端子１９から一定直流電圧として出力さ
れ、直列抵抗１７、チヨークコイル１６を経て同
軸ケーブル３に接続される。チヨークコイル１６
は主信号の電源側への漏洩を防止するために用い
られている。 The power required in the sub-circuit 2 is output as a constant DC voltage from the sub-circuit power output terminal 19 and is connected to the coaxial cable 3 via a series resistor 17 and a chiyoke coil 16. chiyoke coil 16
is used to prevent the main signal from leaking to the power supply side.
副回路２において、３１は主要部、３２は結合
コンデンサ、３３はチヨークコイル、３４は直列
抵抗、３５はトランジスタ、３６は主信号端子、
３７は副回路電源入力端子、３８は監視信号端子
である。 In the sub-circuit 2, 31 is a main part, 32 is a coupling capacitor, 33 is a chain coil, 34 is a series resistor, 35 is a transistor, 36 is a main signal terminal,
37 is a sub-circuit power input terminal, and 38 is a monitoring signal terminal.
副回路における主要部３１は、例えば副回路が
送信局発であれば、主回路１において送信信号を
発生するために必要な局発信号を発生する。主要
部３１と主回路１との間で授受される主信号は、
主信号端子３６、結合コンデンサ３２を経て同軸
ケーブル３に結合される。 The main part 31 in the sub-circuit generates a local signal necessary for generating a transmission signal in the main circuit 1, for example, if the sub-circuit is from a transmitting station. The main signal exchanged between the main part 31 and the main circuit 1 is as follows:
It is coupled to the coaxial cable 3 via the main signal terminal 36 and the coupling capacitor 32.
同軸ケーブル３を経て主回路１から供給された
電源電圧は、チヨークコイル３３を経て副回路電
源入力端子３７に加えられ、これによつて主要部
３１に所要の電源が供給され、正常な動作状態に
対応して一定の直流電流が流れる。 The power supply voltage supplied from the main circuit 1 via the coaxial cable 3 is applied to the sub-circuit power input terminal 37 via the chiyoke coil 33, thereby supplying the required power to the main section 31 and maintaining the normal operating state. Correspondingly, a constant direct current flows.
副回路２の主要部３１において、主回路１に伝
送すべき監視情報が発生したとき、監視信号端子
３８に例えば一定の直流電圧からなる監視信号が
発生する。これによつてトランジスタ３５は導通
し、直列抵抗３４を経て電流が流れる。これによ
つて同軸ケーブル３を経て供給されている副回路
電源供給電流は一定値だけ増加する。 When monitoring information to be transmitted to the main circuit 1 is generated in the main section 31 of the sub-circuit 2, a monitoring signal consisting of, for example, a constant DC voltage is generated at the monitoring signal terminal 38. This causes transistor 35 to conduct and current flows through series resistor 34. As a result, the sub-circuit power supply current supplied via the coaxial cable 3 increases by a constant value.
副回路電源供給電流が増加すると、直列抵抗１
７の両端における電圧降下に変化が生じる。直列
抵抗１７の両端の電圧降下は監視情報入力端子２
０Ａ，２０Ｂを経て主回路１の主要部１１に与え
られ、主要部１１においては端子２０Ａ，２０Ｂ
における電圧の変化を検出することによつて、副
回路の監視信号端子３８において監視信号が発生
したことを検出することができる。 As the sub-circuit power supply current increases, the series resistance 1
A change occurs in the voltage drop across 7. The voltage drop across the series resistor 17 is the monitoring information input terminal 2.
It is applied to the main part 11 of the main circuit 1 via 0A and 20B, and in the main part 11, it is applied to terminals 20A and 20B.
By detecting a change in the voltage at the subcircuit, it is possible to detect the occurrence of a supervisory signal at the supervisory signal terminal 38 of the subcircuit.
このようにして図の監視回路によつて、副回路
における監視情報を主回路において監視すること
ができる。監視信号は前述のごとき電源供給電流
の直流的変化に限らず、パルス的供給電流変化で
もよく、または主信号と明確に区別できるような
周波数の変調でもよく、任意の方法で副回路電源
電流に重畳して伝送することができる。 In this way, the monitoring circuit shown in the figure allows monitoring information in the sub-circuit to be monitored in the main circuit. The monitoring signal is not limited to DC changes in the power supply current as described above, but may also be pulsed changes in the supply current, or modulation of a frequency that can be clearly distinguished from the main signal, and may be applied to the sub-circuit power supply current by any method. Can be transmitted in a superimposed manner.
以上説明したように、本発明の監視回路によれ
ば、同軸ケーブル以外の接続線を必要とすること
なく、副回路における監視情報を主回路に伝送す
ることができるので、装置構成上極めて便宜であ
る。なお副回路の電源電流に大きな変動が生じた
ときは、一般に回路に何らかの異常が発生したも
のと考えられるが、本発明の監視回路によれば副
回路電源電流の異常検出も同時に行なうことがで
き、従つてこのような回路異常の監視も同時に行
なうことができる利点がある。 As explained above, according to the monitoring circuit of the present invention, monitoring information in the sub circuit can be transmitted to the main circuit without requiring any connection line other than a coaxial cable, which is extremely convenient in terms of device configuration. be. Note that when a large fluctuation occurs in the power supply current of the sub-circuit, it is generally considered that some kind of abnormality has occurred in the circuit, but according to the monitoring circuit of the present invention, it is possible to simultaneously detect an abnormality in the power supply current of the sub-circuit. Therefore, there is an advantage that such circuit abnormalities can be monitored at the same time.
図は本発明の監視回路の一実施例の構成を示す
ブロツク図である。
１……主回路、２……副回路、３……同軸ケー
ブル、１１……主要部、１２……入力端子、１３
……出力端子、１４……電源端子、１５……結合
コンデンサ、１６……チヨークコイル、１７……
直列抵抗、１８……主信号端子、１９……副回路
電源出力端子、２０Ａ，２０Ｂ……監視情報入力
端子、３１……主要部、３２……結合コンデン
サ、３３……チヨークコイル、３４……直列抵
抗、３５……トランジスタ、３６……主信号端
子、３７……副回路電源入力端子、３８……監視
信号端子。
The figure is a block diagram showing the configuration of one embodiment of the monitoring circuit of the present invention. 1...Main circuit, 2...Sub circuit, 3...Coaxial cable, 11...Main part, 12...Input terminal, 13
... Output terminal, 14 ... Power supply terminal, 15 ... Coupling capacitor, 16 ... Chiyoke coil, 17 ...
Series resistor, 18...Main signal terminal, 19...Sub circuit power output terminal, 20A, 20B...Monitoring information input terminal, 31...Main part, 32...Coupling capacitor, 33...Chi York coil, 34...Series Resistor, 35...Transistor, 36...Main signal terminal, 37...Sub circuit power input terminal, 38...Monitoring signal terminal.
Claims (1)
直流の電源供給を行なう同軸ケーブルを介して副
回路を主回路に付加し得るように構成されている
システムにおいて、主回路および副回路の主信号
端子１８，３６と該同軸ケーブルとをコンデンサ
１５，３２を介して接続し、主回路の副回路電源
出力端子１９および副回路の電源入力端子３７と
該同軸ケーブルとをチヨークコイル１６，３３を
介して接続し、副回路で監視情報が発生した際に
該チヨークコイル１６，３３を介して流れる電源
供給電流を直流的に一定値変化させる手段を副回
路に具えるとともに、該チヨークコイル１６，３
３を介して流れる電源供給電流の直流的変化を検
出する手段を主回路に具えて、副回路における監
視情報を主回路へ伝達することを特徴とする監視
回路。1. In a system configured so that a sub-circuit can be added to the main circuit via a coaxial cable that simultaneously sends and receives an AC main signal and supplies DC power to the sub-circuit, the main signal terminal of the main circuit and the sub-circuit 18, 36 and the coaxial cable are connected via capacitors 15, 32, and the sub-circuit power output terminal 19 of the main circuit and the sub-circuit power input terminal 37 and the coaxial cable are connected via the chain coils 16, 33. The sub-circuit is provided with means for changing the power supply current flowing through the chi-yoke coils 16, 33 by a fixed value in a direct current manner when monitoring information is generated in the sub-circuit, and the chi-yoke coils 16, 3
3. A monitoring circuit characterized in that the main circuit is equipped with means for detecting DC changes in the power supply current flowing through the main circuit, and the monitoring circuit transmits monitoring information in the sub-circuit to the main circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3210380A JPS56129539A (en) | 1980-03-13 | 1980-03-13 | Monitoring circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3210380A JPS56129539A (en) | 1980-03-13 | 1980-03-13 | Monitoring circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56129539A JPS56129539A (en) | 1981-10-09 |
| JPS6231570B2 true JPS6231570B2 (en) | 1987-07-09 |
Family
ID=12349558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3210380A Granted JPS56129539A (en) | 1980-03-13 | 1980-03-13 | Monitoring circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56129539A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5230311A (en) * | 1975-09-03 | 1977-03-08 | Hitachi Ltd | Signal conveyance method |
-
1980
- 1980-03-13 JP JP3210380A patent/JPS56129539A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5230311A (en) * | 1975-09-03 | 1977-03-08 | Hitachi Ltd | Signal conveyance method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56129539A (en) | 1981-10-09 |
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