JPS6155294B2 - - Google Patents
Info
- Publication number
- JPS6155294B2 JPS6155294B2 JP13603980A JP13603980A JPS6155294B2 JP S6155294 B2 JPS6155294 B2 JP S6155294B2 JP 13603980 A JP13603980 A JP 13603980A JP 13603980 A JP13603980 A JP 13603980A JP S6155294 B2 JPS6155294 B2 JP S6155294B2
- Authority
- JP
- Japan
- Prior art keywords
- power
- power line
- channel
- power supply
- syn
- 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
- 230000005540 biological transmission Effects 0.000 claims description 9
- 230000001360 synchronised effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
- H04B3/542—Systems for transmission via power distribution lines the information being in digital form
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2203/00—Indexing scheme relating to line transmission systems
- H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
- H04B2203/5404—Methods of transmitting or receiving signals via power distribution lines
- H04B2203/542—Methods of transmitting or receiving signals via power distribution lines using zero crossing information
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Time-Division Multiplex Systems (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、電力線データ伝送系において、送受
信装置には全く手を加えず電力線との接続を互い
に逆に行なうことにより相数の２倍のチヤンネル
を得るようにした多チヤンネル方式に係る。DETAILED DESCRIPTION OF THE INVENTION The present invention provides a power line data transmission system that obtains channels twice the number of phases by connecting the power lines in opposite ways without making any changes to the transmitter/receiver. Regarding the channel method.
第１図のように電源電圧ACの１周期の特定位
相（t0時点）で信号パルスを伝送する系が構成さ
れていたとする。送受信タイミングの発生は、通
常第２図のように、電源ラインＡ，Ｂに電源同期
パルス発生器SYNを接続しこれにより基準トリ
ガを得、カウンタCOで任意時点に設定するよう
にしている。なお、電源同期パルス発生器SYN
は、電源電圧の変動の影響を受けないことが望ま
しいので、零クロス検出回路が適当である。最も
簡単に零クロス検出回路を実現するには、図示の
ように、トランジスタTr、ダイオードＤ、抵抗
R1，R2を用いて構成すればよい。 Assume that a system is configured that transmits a signal pulse at a specific phase (time t 0 ) of one cycle of the power supply voltage AC as shown in FIG. The transmission/reception timing is usually generated by connecting a power synchronizing pulse generator SYN to the power lines A and B, as shown in FIG. In addition, the power supply synchronous pulse generator SYN
Since it is desirable that the circuit should not be affected by fluctuations in the power supply voltage, a zero-cross detection circuit is appropriate. The simplest way to implement a zero cross detection circuit is to use a transistor Tr, a diode D, and a resistor as shown in the figure.
It may be configured using R 1 and R 2 .
そしてこの場合、電源ラインＡ，Ｂとの接続法
は第３図のように２通り存在する。また、電源ラ
インＢを基準に電源ラインＡを見た場合と、電源
ラインＡを基準に電源ラインＢを見た場合では、
同一の電源電圧でも位相が180゜異なる。第３図
において、の電源同期パルス発生器SYN1は電
源ラインＢを基準、の電源同期パルス発生器
SYN2は電源ラインＡを基準とみたものである。
従つて、及びにおける電源同期パルス発生器
SYN1，SYN2のそれぞれ出力S1，S2は第４図のよ
うに位相が180゜異なる（図示の交流電圧ACは電
源ラインＢを基準としたものを示す）。このた
め、１周期の特定位相でデータ伝送を行なうよう
にされた器機では、その電源ラインへの接続方向
を互いに反対にすることにより、２つの独立した
チヤンネルを得ることができる。第５図のt0，
t0′は接特方向を互に逆にした各チヤンネルにお
ける送受信タイミングを示す。 In this case, there are two ways to connect the power lines A and B as shown in FIG. Also, when looking at power line A based on power line B, and when looking at power line B based on power line A,
Even with the same power supply voltage, the phase differs by 180°. In Figure 3, the power supply synchronous pulse generator SYN 1 is the power supply synchronous pulse generator with reference to power line B.
SYN 2 is based on power line A.
Therefore, the power synchronized pulse generator in and
The respective outputs S 1 and S 2 of SYN 1 and SYN 2 have a phase difference of 180° as shown in FIG. 4 (the AC voltage AC shown in the figure is based on power line B). Therefore, in a device configured to transmit data in a specific phase of one cycle, two independent channels can be obtained by reversing the connection directions to the power supply lines. t 0 in Figure 5,
t 0 ' indicates the transmission and reception timing in each channel with the contact directions reversed.
３相交流では、本来３通りの接続法があるため
本方式を考慮すると同一構成の伝送系で独立な６
チヤンネルを得ることができる。位相０゜で伝送
を行なう場合には第６図のようになる。t1〜t3が
ある接続状態で、逆接続すればt′1〜t′3となる。 In three-phase AC, there are originally three connection methods, so considering this method, six independent connections can be made in the same transmission system.
channel can be obtained. When transmission is performed with a phase of 0°, the result is as shown in FIG. If t 1 to t 3 are in a connected state and reversely connected, t′ 1 to t′ 3 will be obtained.
以上のように本発明によれば、装置に全く手を
加えず、電力線との接続を互いに逆接続すること
により、相数の２倍のチヤンネルを得るものであ
り、装置を複雑にすることのない有用な多チヤン
ネル方式が提供できる。 As described above, according to the present invention, a channel with twice the number of phases can be obtained by connecting the power lines in reverse to each other without making any modifications to the device, thereby eliminating the need for complicating the device. No useful multi-channel system can be provided.
第１図は電力線データ伝送系を示すタイムチヤ
ート、第２図は同要部ブロツクダイヤグラム、第
３図は本発明の一実施例における接続例を説明す
る要部ブロツクダイヤグラム、第４図は第３図の
各部信号波形を示すタイムチヤート、第５図は多
チヤンネル化を説明するタイムチヤート、第６図
は他の多チヤンネル化を説明するタイムチヤート
である。
Ａ，Ｂ……電源ライン、SYN……電源同期パ
ルス発生器、CO……カウンタ。
Fig. 1 is a time chart showing a power line data transmission system, Fig. 2 is a block diagram of the main parts thereof, Fig. 3 is a block diagram of main parts explaining a connection example in an embodiment of the present invention, and Fig. 4 is a block diagram of the main parts of the power line data transmission system. FIG. 5 is a time chart showing the signal waveforms of each part in the figure, FIG. 5 is a time chart explaining multi-channelization, and FIG. 6 is a time chart explaining other multi-channelization. A, B...Power line, SYN...Power synchronization pulse generator, CO...Counter.
Claims (1)
圧の特定の位相でデータの送受信を行うものにお
いて、 １組の電力線にたいして、接続が互いに逆向き
の２組の送受信装置を設けることで相数が２倍の
チヤンネルを得たことを特徴とする電力線データ
伝送系における多チヤンネル化方式。[Claims] 1. In a system in which a power line is also used as a data transmission line and data is transmitted and received at a specific phase of the power supply voltage, two sets of transmitting/receiving devices connected in opposite directions to one set of power lines are provided. A multi-channel system in a power line data transmission system, which is characterized in that by providing a channel with twice the number of phases.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13603980A JPS5760743A (en) | 1980-09-27 | 1980-09-27 | Multichannel system in power line data transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13603980A JPS5760743A (en) | 1980-09-27 | 1980-09-27 | Multichannel system in power line data transmission system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5760743A JPS5760743A (en) | 1982-04-12 |
| JPS6155294B2 true JPS6155294B2 (en) | 1986-11-27 |
Family
ID=15165743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13603980A Granted JPS5760743A (en) | 1980-09-27 | 1980-09-27 | Multichannel system in power line data transmission system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5760743A (en) |
-
1980
- 1980-09-27 JP JP13603980A patent/JPS5760743A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5760743A (en) | 1982-04-12 |
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