JPH0379917B2 - - Google Patents
Info
- Publication number
- JPH0379917B2 JPH0379917B2 JP24742285A JP24742285A JPH0379917B2 JP H0379917 B2 JPH0379917 B2 JP H0379917B2 JP 24742285 A JP24742285 A JP 24742285A JP 24742285 A JP24742285 A JP 24742285A JP H0379917 B2 JPH0379917 B2 JP H0379917B2
- Authority
- JP
- Japan
- Prior art keywords
- impedance
- transmitting
- power line
- receiving device
- carrier wave
- 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
- 238000010586 diagram Methods 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Description
【発明の詳細な説明】
産業上の利用分野
本発明は家庭内の電力線を信号伝送路として被
制御機器の遠隔制御を行なう電力線搬送波送受信
装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a power line carrier wave transmitting/receiving device that remotely controls controlled equipment using a domestic power line as a signal transmission path.
従来の技術
従来の電力線搬送波送受信装置では、第３図に
示すように、電力線１に送受信装置２を接続し、
これに負荷となる被制御機器３（例えば証明器
具、エアコンなど）が接続されている。電力線１
にはこの他に、他の負荷を制御する送受信装置
や、掃除機、洗濯機、テレビなど多数の電化商品
が接続されている。そして動作は他の送受信装置
からの信号が電力線１を通り送受信器２１に伝え
られ制御回路２２が働きリレー２３をON（又は
OFF）させ被制御機器３をON（又はOFF）させ
るものである。Prior Art In a conventional power line carrier wave transmitting/receiving device, as shown in FIG. 3, a transmitting/receiving device 2 is connected to a power line 1,
A controlled device 3 (for example, a certification device, an air conditioner, etc.) serving as a load is connected to this. power line 1
In addition to this, many electrical appliances such as transmitting/receiving devices that control other loads, vacuum cleaners, washing machines, and televisions are connected. In operation, a signal from another transmitting/receiving device is transmitted to the transmitting/receiving device 21 through the power line 1, and the control circuit 22 works to turn on the relay 23 (or
OFF) and the controlled device 3 is turned ON (or OFF).
しかしながら、機器のインピーダンスが電力線
１に並列に接続されており、特に搬送波信号（例
えば125KHz）に対してインピーダンスである雑
防コンデンサが多数並列に接続されているので、
各々の送受信装置２の入出力端子におけるインピ
ーダンスは非常に低くなる場合がある。この線路
インピーダンスが数Ω以下に下がると通信信号の
レベルが送受信装置の受信感度以下になり、受信
できなくなり、従つて搬送波の通信が不能とな
り、被制御機器のリモートコントロールが出来な
くなる。このような状態では通信出来る距離は50
ｍ位に短縮される。 However, the impedance of the equipment is connected in parallel to the power line 1, and in particular, many noise prevention capacitors that are impedance to the carrier signal (for example, 125KHz) are connected in parallel.
The impedance at the input/output terminals of each transmitting/receiving device 2 may become very low. When the line impedance drops to below several ohms, the level of the communication signal falls below the receiving sensitivity of the transmitting/receiving device, making it impossible to receive it, thus making carrier wave communication impossible and making it impossible to remotely control the controlled equipment. In this situation, the communication distance is 50
It is shortened to m.
発明が解決しようとする問題点
このように従来の装置では電力線１のラインイ
ンピーダンスが数Ω以下になると通信できなくな
り、証明器具やエアコンのリモートコントロール
が出来なくなるという問題点があつた。本発明は
かかる点に鑑みてなされたもので、簡単な構成で
送受信装置の入出力インピーダンスを高くし、低
インピーダンス機器の制御を可能とすることを目
的とするものである。Problems to be Solved by the Invention As described above, the conventional device has a problem in that when the line impedance of the power line 1 becomes less than several ohms, communication becomes impossible and remote control of certification equipment and air conditioners becomes impossible. The present invention has been made in view of this point, and an object of the present invention is to increase the input/output impedance of a transmitting/receiving device with a simple configuration and to enable control of low impedance equipment.
問題点を解決するための手段
本発明は上記問題点を解決するための、送受信
装置内に、電力線と被制御機器との間に接続され
る並列共振回路よりなるインピーダンスアツパー
を設けたものである。Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides an impedance upper made of a parallel resonant circuit connected between the power line and the controlled device in the transmitting/receiving device. be.
作 用
本発明は上記した構成により、低いインピーダ
ンスの機器が送受信装置に接続されてもラインイ
ンピーダンスは低下することがなく、安定した通
信が可能となる。Effects According to the present invention, with the above-described configuration, even if a device with low impedance is connected to the transmitting/receiving device, the line impedance does not decrease, and stable communication is possible.
実施例
第１図は本発明の電力線搬送波送受信装置の一
実施例を示すブロツク図である。第１図において
第３図に示した装置と同一部分は同一符号を付し
詳細な説明を省略する。電力線１と被制御機器３
との間に直列にインピーダンスアツパー２４が接
続されており、このインピーダンスアツパー２４
は送受信装置２に内蔵されている。このインピー
ダンスアツパー２４により被制御機器３が低イン
ピーダンスであつても電力線１のインピーダンス
を低下させることはなく、送受信器２１の送信出
力を低下させることも、受信感度レベルを下げる
こともなくなる。Embodiment FIG. 1 is a block diagram showing an embodiment of the power line carrier wave transmitting/receiving device of the present invention. In FIG. 1, the same parts as those in the apparatus shown in FIG. 3 are designated by the same reference numerals, and detailed description thereof will be omitted. Power line 1 and controlled equipment 3
An impedance upper 24 is connected in series between the impedance upper 24 and
is built into the transmitting/receiving device 2. Due to this impedance upper 24, even if the controlled device 3 has a low impedance, the impedance of the power line 1 will not be lowered, the transmission output of the transceiver 21 will not be lowered, and the receiving sensitivity level will not be lowered.
第２図にインピーダンスアツパーの実施例につ
いて示す。図に示すように、インダクタンス２５
とコンデンサ２６を並列に接続して並列共振回路
を構成しているものである。これは搬送波周波数
（例えば125KHz）に共振するもので、インダクタ
ンス１個のみの場合よりもインピーダンスを高く
することができる。またインダクタンス１個のみ
の場合は負荷の容量値によつては直列共振を生じ
十分なインピーダンスが得られない場合もあり、
極端な場合はインピーダンスが低下することもあ
るが、実施例のように並列共振回路を用いると負
荷の影響をうけにくいものである。 FIG. 2 shows an example of an impedance upper. As shown in the figure, the inductance 25
and a capacitor 26 are connected in parallel to form a parallel resonant circuit. This resonates with the carrier wave frequency (for example, 125 KHz), and the impedance can be made higher than in the case of only one inductance. Also, if only one inductance is used, depending on the load capacitance value, series resonance may occur and sufficient impedance may not be obtained.
In extreme cases, the impedance may drop, but if a parallel resonant circuit is used as in the embodiment, it will be less affected by the load.
なお、インピーダンスアツパーは上記実施例の
もの以外に種々のものが考えられるものである。 Note that various impedance uppers other than those in the above embodiments are conceivable.
発明の効果
以上述べてきたように、本発明によれば、イン
ピーダンスアツパーを送受信装置内に追加するこ
とにより、低インピーダンス機器のリモートコン
トロールを電力線搬送波システムで行うことがで
きるとともに、インピーダンスアツパーは並列共
振回路よりなるため、負荷の影響を受けにくく十
分なインピーダンスが得られるものである。Effects of the Invention As described above, according to the present invention, by adding an impedance upper into the transmitter/receiver, remote control of low impedance equipment can be performed using a power line carrier wave system, and the impedance upper is Since it consists of a parallel resonant circuit, it is less susceptible to load effects and can provide sufficient impedance.
第１図は本発明の一実施例における電力線搬送
波送受信装置のブロツク図、第２図は本発明のイ
ンピーダンスアツパーの実施例を示す構成図、第
３図は従来の電力線搬送波送受信装置のブロツク
図である。
１……電力線、２……送受信装置、３……被制
御機器、２４……インピーダンスアツパー。
FIG. 1 is a block diagram of a power line carrier wave transmitting/receiving device according to an embodiment of the present invention, FIG. 2 is a block diagram showing an embodiment of an impedance upper according to the present invention, and FIG. 3 is a block diagram of a conventional power line carrier wave transmitting/receiving device. It is. DESCRIPTION OF SYMBOLS 1... Power line, 2... Transmitting/receiving device, 3... Controlled equipment, 24... Impedance riser.
Claims (1)
と、この送受信装置に接続された被制御機器とを
備え、前記送受信装置内には、電力線と被制御機
器との間に接続される並列共振回路よりなるイン
ピーダンスアツパーを設けた電力線搬送波送受信
装置。1.Equipped with a transmitting/receiving device through which signals are transmitted via a power line and a controlled device connected to the transmitting/receiving device, and a parallel resonant circuit connected between the power line and the controlled device in the transmitting/receiving device. A power line carrier wave transmitting/receiving device equipped with an impedance upper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24742285A JPS62107535A (en) | 1985-11-05 | 1985-11-05 | Power line carrier transmission and reception equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24742285A JPS62107535A (en) | 1985-11-05 | 1985-11-05 | Power line carrier transmission and reception equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62107535A JPS62107535A (en) | 1987-05-18 |
| JPH0379917B2 true JPH0379917B2 (en) | 1991-12-20 |
Family
ID=17163199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24742285A Granted JPS62107535A (en) | 1985-11-05 | 1985-11-05 | Power line carrier transmission and reception equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62107535A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4461537B2 (en) * | 1999-12-24 | 2010-05-12 | シンフォニアテクノロジー株式会社 | Power line carrier communication equipment |
| KR100367592B1 (en) * | 2000-05-12 | 2003-01-10 | 엘지전자 주식회사 | Adaptive type power line communication apparatus and method |
| JP4480373B2 (en) * | 2002-09-03 | 2010-06-16 | 矢崎総業株式会社 | Power superimposed multiplex communication device for vehicle |
-
1985
- 1985-11-05 JP JP24742285A patent/JPS62107535A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62107535A (en) | 1987-05-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |