JPH067651B2 - Power line carrier transceiver - Google Patents
Power line carrier transceiverInfo
- Publication number
- JPH067651B2 JPH067651B2 JP59081455A JP8145584A JPH067651B2 JP H067651 B2 JPH067651 B2 JP H067651B2 JP 59081455 A JP59081455 A JP 59081455A JP 8145584 A JP8145584 A JP 8145584A JP H067651 B2 JPH067651 B2 JP H067651B2
- Authority
- JP
- Japan
- Prior art keywords
- power
- transmission
- power supply
- transmitting
- circuit
- 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 - Lifetime
Links
- 230000005540 biological transmission Effects 0.000 claims description 29
- 238000001514 detection method Methods 0.000 claims description 5
- 239000003990 capacitor Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009499 grossing Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 1
Landscapes
- Small-Scale Networks (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Selective Calling Equipment (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野と従来技術〕本発明は電力と情報信
号とを同一伝送線路で送受信する電力線搬送送受信装置
に関するものである。従来のこの種の装置を第１図につ
いて説明する。点線の枠で示す１は電力供給送受信装置
で、商用電源よりトランス２、ダイオードブリッジ３お
よび平滑コンデンサ４を介して直流電源Ｅが供給され
る。５は直流電源Ｅに直列に接続された信号トランス、
Ａ，Ｂは電力の供給および情報信号の送受信を行なう伝
送線路である。６は情報信号の入出力回路、７はマイク
ロコンピュータ、８は受信回路、９は送信回路、10は同
調コンデンサで、伝送線路Ａ，Ｂによって送られてきた
情報信号は受信回路８で検波され、マイクロコンピュー
タ７を通って入出力回路６で処理される。入出力回路６
の情報信号はマイクロコンピュータ７および送信回路９
を通って信号トランス５か伝送線路Ａ，Ｂに出力され
る。Ｃ１，Ｃ２，Ｃ３は伝送線路Ａ，Ｂに接続されてい
る複数個の送受信装置である。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field and Prior Art] The present invention relates to a power line carrier transmitting / receiving apparatus for transmitting and receiving electric power and an information signal on the same transmission line. A conventional device of this type will be described with reference to FIG. Reference numeral 1 indicated by a dotted frame is a power supply transmitter / receiver, which is supplied with a DC power supply E from a commercial power supply through a transformer 2, a diode bridge 3 and a smoothing capacitor 4. 5 is a signal transformer connected in series to the DC power source E,
A and B are transmission lines for supplying electric power and transmitting and receiving information signals. 6 is an information signal input / output circuit, 7 is a microcomputer, 8 is a receiving circuit, 9 is a transmitting circuit, 10 is a tuning capacitor, and the information signal sent by the transmission lines A and B is detected by the receiving circuit 8. It is processed by the input / output circuit 6 through the microcomputer 7. I / O circuit 6
The information signal of the microcomputer 7 and the transmission circuit 9
Through the signal transformer 5 or the transmission lines A and B. C 1 , C 2 , and C 3 are a plurality of transmitting / receiving devices connected to the transmission lines A and B.
〔発明の目的〕ところで上記従来の送受信ネットワーク
において、伝送線路Ａ，Ｂに電圧が印加されているとき
に送受信装置Ｃを追加接続する場合、誤ってＡ，Ｂ間に
短絡が生ずると信号トランス５を焼損するおそれがあ
る。したがって送受信装置Ｃを追加接続又は除去する場
合は電源をオフにする必要がある。このように工事のた
めに停電することは手間がかゝり、かつ伝送線路に接続
されている他の送受信装置を休止させることになる。本
発明はこの問題を解決することを意図するものであっ
て、工事の際に停電を必要としない電力線搬送送受信装
置を提供することを目的とするものである。[Object of the Invention] In the above conventional transmission / reception network, when a transmission / reception device C is additionally connected while voltage is applied to the transmission lines A and B, if a short circuit occurs between A and B by mistake, the signal transformer 5 May be burnt out. Therefore, when the transmission / reception device C is additionally connected or removed, it is necessary to turn off the power supply. In this way, the power failure due to the construction is time-consuming, and the other transmission / reception devices connected to the transmission line are stopped. The present invention is intended to solve this problem, and an object of the present invention is to provide a power line carrier transmission / reception device that does not require a power outage during construction.
〔発明の構成〕本発明の電力線搬送送受信装置は、電源
に直列に接続した信号トランスを有し、電力を供給する
と共に前記信号トランスを介して情報信号の送受信を行
なう電力供給送受信装置と、この電力供給送受信装置よ
り電力の供給をうける複数個の送受信装置およびこれら
を接続する伝送線路とよりなるネットワークにおいて、
前記電力供給送受信装置は電力のレベルを検出する検出
回路と、この検出回路の出力によって電源スイッチのオ
ンオフを制御する制御回路とを備えていることを特徴と
する。[Structure of the Invention] A power line carrier transmitter / receiver of the present invention has a signal transformer connected in series to a power source, supplies power and transmits / receives an information signal through the signal transformer, and In a network consisting of a plurality of transmitters / receivers receiving power from the power supply transmitter / receiver and a transmission line connecting them,
The power supply transmission / reception device includes a detection circuit for detecting a power level, and a control circuit for controlling on / off of a power switch according to an output of the detection circuit.
本発明の実施例を第２図について説明する。同図におい
て、１〜10およびＡ，Ｂ，Ｃ，Ｅは第１図と同じものを
示している。11は電力のレベルを検出する検出回路で、
基準電圧を設定する抵抗12,13と、この基準電圧と伝送
線路Ａの電圧とを比較する電圧比較器14と、電圧比較器
14の出力抵抗15とよりなる。16は電圧比較器14の出力に
よって動作する制御回路で、伝送線路Ａに直列に接続さ
れた電源スイッチ17をオンオフするリレーコイル18を制
御する。An embodiment of the present invention will be described with reference to FIG. In the figure, 1 to 10 and A, B, C and E are the same as those in FIG. 11 is a detection circuit for detecting the power level,
Resistors 12 and 13 for setting a reference voltage, a voltage comparator 14 for comparing the reference voltage with the voltage of the transmission line A, and a voltage comparator
It consists of 14 output resistors and 15. Reference numeral 16 is a control circuit that operates according to the output of the voltage comparator 14, and controls a relay coil 18 that turns on and off a power switch 17 connected in series to the transmission line A.
次にその作用を説明する。伝送線路ＡＢ間に短絡がある
と伝送線路Ａの電圧が基準電圧よりも低くなる。電圧比
較器14がこれを検出するとその出力は出力抵抗15によっ
て「低」となる。そして制御回路16が電圧比較器14の
「低」出力を入力するとリレーコイル18は電源スイッチ
17をオフにする。Next, the operation will be described. When there is a short circuit between the transmission lines AB, the voltage of the transmission line A becomes lower than the reference voltage. When the voltage comparator 14 detects this, its output is "low" due to the output resistor 15. Then, when the control circuit 16 inputs the "low" output of the voltage comparator 14, the relay coil 18 switches to the power switch.
Turn off 17
〔発明の効果〕本発明の電力線搬送送受信装置は以上の
構成および作用を有するので以下述べるような効果があ
る。(1)伝送線路に送受信装置を追加接続するとき、あ
るいはその他の工事をする場合に、事故発生防止のため
に電源スイッチを切る必要がない、したがって伝送線路
を無停電で工事をすることができる。(2)伝送線路の短
絡は端子のかしめ不良によって起る場合が多いが、短絡
があったときは電源スイッチを自動的にオフにして事故
の発生を未然に防止する。[Effects of the Invention] The power line carrier transmitter / receiver of the present invention has the above-mentioned configuration and operation, and therefore has the following effects. (1) It is not necessary to turn off the power switch to prevent accidents when connecting a transmission / reception device to the transmission line, or when performing other constructions. Therefore, the transmission line can be constructed without interruption. . (2) Transmission line short circuits often occur due to defective caulking of terminals. When a short circuit occurs, the power switch is automatically turned off to prevent accidents.
第１図：従来の装置の電気回路図 第２図：本発明の装置の電気回路図 １……電力供給送受信装置、２……トランス、３……ダ
イオードブリッジ、４……平滑コンデンサ、５……信号
トランス、６……情報信号の入出力回路、７……マイク
ロコンピュータ、８……受信回路、９……送信回路、10
……同調コンデンサ、11……電力レベルの検出回路、1
2,13……抵抗、14……電圧比較器、15……出力抵抗、16
……制御回路、17……電源スイッチ、18……リレーコイ
ル、Ａ，Ｂ……伝送線路、Ｃ１Ｃ２Ｃ３……送受信装置Fig. 1: Electrical circuit diagram of conventional device Fig. 2: Electrical circuit diagram of device of the present invention 1 ... Power supply / transmission / reception device, 2 ... Transformer, 3 ... Diode bridge, 4 ... Smoothing capacitor, 5 ... ... Signal transformer, 6 ... Information signal input / output circuit, 7 ... Microcomputer, 8 ... Reception circuit, 9 ... Transmission circuit, 10
...... Tuning capacitor, 11 …… Power level detection circuit, 1
2,13 ...... Resistance, 14 ...... Voltage comparator, 15 ...... Output resistance, 16
...... Control circuit, 17 …… Power switch, 18 …… Relay coil, A, B …… Transmission line, C 1 C 2 C 3 …… Transceiver
Claims (1)
し、電力を供給すると共に前記信号トランスを介して情
報信号の送受信を行なう電力供給送受信装置と、この電
力供給送受信装置より電力の供給をうける複数個の送受
信装置およびこれらを接続する伝送線路とよりなるネッ
トワークにおいて、前記電力供給送受信装置は電力のレ
ベルを検出する検出回路と、この検出回路の出力によっ
て電源スイッチのオンオフを制御する制御回路とを備え
ていることを特徴とする電力線搬送送受信装置1. A power supply transmission / reception device having a signal transformer connected in series to a power supply for supplying electric power and transmitting / receiving an information signal via the signal transformer, and supplying power from the power supply transmission / reception device. In a network composed of a plurality of transmitting / receiving devices and a transmission line connecting them, the power supply transmitting / receiving device detects a power level, and a control circuit for controlling on / off of a power switch by an output of the detection circuit. And a power line carrier transmitting / receiving device characterized by comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59081455A JPH067651B2 (en) | 1984-04-23 | 1984-04-23 | Power line carrier transceiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59081455A JPH067651B2 (en) | 1984-04-23 | 1984-04-23 | Power line carrier transceiver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60224357A JPS60224357A (en) | 1985-11-08 |
| JPH067651B2 true JPH067651B2 (en) | 1994-01-26 |
Family
ID=13746873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59081455A Expired - Lifetime JPH067651B2 (en) | 1984-04-23 | 1984-04-23 | Power line carrier transceiver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH067651B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0563708A (en) * | 1991-09-02 | 1993-03-12 | Matsushita Electric Ind Co Ltd | Power supply for home bus system |
-
1984
- 1984-04-23 JP JP59081455A patent/JPH067651B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60224357A (en) | 1985-11-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4726052A (en) | Radio telephone system and method for controlling same | |
| JPH067651B2 (en) | Power line carrier transceiver | |
| JPS62123896A (en) | Remote supervisory and controlling equipment | |
| JPH0923644A (en) | Switching power supply | |
| JPH0238040B2 (en) | SOJUSHINSOCHI | |
| JPS59182B2 (en) | Battery voltage detection method for selective call receiving device | |
| JPH02302129A (en) | Video receiver | |
| JP2666849B2 (en) | Remote monitoring device | |
| JPH0346637Y2 (en) | ||
| USRE35582E (en) | Subscriber line interface circuit with power-down mode | |
| JP2000278199A (en) | Radio base station and automatic transmission power ON / OFF control method | |
| JPH035928Y2 (en) | ||
| JP3062227B2 (en) | Terminal equipment in fire alarm equipment | |
| JPS58137364A (en) | Power source circuit of receiver with remote controller | |
| JPS6247019B2 (en) | ||
| JPH0241742Y2 (en) | ||
| JPS6230354Y2 (en) | ||
| JP2002300674A (en) | Wired remote control | |
| JP3098776B2 (en) | Monitoring terminal for remote monitoring and control system | |
| JP2583238Y2 (en) | Wired / wireless data communication system | |
| JPS59111294A (en) | Remote control dimming system receiver | |
| JPH027119B2 (en) | ||
| JPH0681112B2 (en) | Switching control circuit for burst signal transmission | |
| JPH046158B2 (en) | ||
| JPH1094198A (en) | Power supply remote controller |