JPS62213425A - Power line carrier communication system - Google Patents
Power line carrier communication systemInfo
- Publication number
- JPS62213425A JPS62213425A JP61054796A JP5479686A JPS62213425A JP S62213425 A JPS62213425 A JP S62213425A JP 61054796 A JP61054796 A JP 61054796A JP 5479686 A JP5479686 A JP 5479686A JP S62213425 A JPS62213425 A JP S62213425A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- reply
- section
- synchronization signal
- synchronization
- 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
- 238000004891 communication Methods 0.000 title claims abstract description 16
- 238000012795 verification Methods 0.000 claims description 9
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 abstract description 8
- 230000008878 coupling Effects 0.000 abstract description 4
- 238000010168 coupling process Methods 0.000 abstract description 4
- 238000005859 coupling reaction Methods 0.000 abstract description 4
- 238000001514 detection method Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 238000007796 conventional method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 101000905241 Mus musculus Heart- and neural crest derivatives-expressed protein 1 Proteins 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
Landscapes
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は電力線搬送通信方式に係り、特に電源周波に同
期しないで通信を行う方式に好適な通信方式に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a power line carrier communication system, and particularly to a communication system suitable for a system in which communication is performed without synchronization with a power supply frequency.
従来、電力線を通信路に用いた通信方式では、電力線が
雑音が多く、通信路としては劣悪であり。Conventionally, in communication systems that use power lines as communication channels, the power lines have a lot of noise and are poor communication channels.
低速伝送が一般的であり、電源周波の５０Ｈｚまたは、
６０Ｈｚを同期信号として利用するが一般的であった。Low-speed transmission is common, with the power frequency of 50Hz or
It was common to use 60Hz as a synchronization signal.
なお、この種の装置として関連するものには例えば特開
昭５５−１６６４４５号が挙げられる。Note that related devices of this type include, for example, Japanese Patent Application Laid-open No. 166445/1983.
上記従来方式は高速伝送について配慮されておらず、上
記従来方式で高速伝送を行った場合は前記の如く電源周
波を基本時間単位としているため。This is because the above-mentioned conventional method does not take high-speed transmission into consideration, and when high-speed transmission is performed using the above-mentioned conventional method, the power supply frequency is used as the basic time unit as described above.
電源周波が不安定となったときに同期ずれを起す問題が
あった。There was a problem that synchronization could occur when the power supply frequency became unstable.
本発明の目的は高速伝送に適し、信頼度の高い通信方式
を提供することにある。An object of the present invention is to provide a highly reliable communication system suitable for high-speed transmission.
上記目的は、同期方式を変えることにより、達成される
。すなわち、通信を電源周波に同期させずに行い、同期
信号発生要素、返信検定要素、基準クロック発生要素を
具備した１個の親局と、同期信号検定要素、返信信号発
生要素、基準クロツり発生要素、基準クロックを基本時
間単位として同期信号の同期タイミングを記憶する記憶
要素とを具備した少なくとも１個の子局より構成し、親
局より一定時間毎に同期信号を送出し、係る同期信号に
同期して通信を行うことにより達成される。The above objective is achieved by changing the synchronization method. That is, communication is performed without synchronization with the power supply frequency, and there is one master station equipped with a synchronization signal generation element, a reply verification element, and a reference clock generation element, and a synchronization signal verification element, a reply signal generation element, and a reference clock generation element. element, and a storage element that stores the synchronization timing of the synchronization signal using the reference clock as a basic time unit, and the master station transmits the synchronization signal at fixed time intervals, and the synchronization signal is This is achieved by communicating synchronously.
上記のごとく、電源周波に同期しないので、電源周波の
不安定性の影響を受けない、よって、同期ずれが起きず
、高速化が可能となる。また、１個の親局が一定時間毎
に同期信号を送出して安定な同期信号を得るようにする
ので信頼度が高くなる。また、信号を送出するたびに同
期をとるということがないので、高速応答になる。As mentioned above, since it is not synchronized with the power supply frequency, it is not affected by the instability of the power supply frequency, and therefore, synchronization does not occur, making it possible to increase the speed. Furthermore, since one master station sends out a synchronization signal at regular intervals to obtain a stable synchronization signal, reliability is increased. Furthermore, since there is no need to synchronize each time a signal is sent, the response is fast.
以下１本発明の一実施例を第１図から第４図により説明
する。An embodiment of the present invention will be described below with reference to FIGS. 1 to 4.
第１図は本発明の一実施例の親局Ｐのブロック。FIG. 1 is a block diagram of a master station P according to an embodiment of the present invention.
図、第２図は子局Ｑのブロック図、第３図は本発明の基
本構成を示す図、第４図は同期信号と返信の伝送のタイ
ムチャートである。2 is a block diagram of the slave station Q, FIG. 3 is a diagram showing the basic configuration of the present invention, and FIG. 4 is a time chart of synchronization signal and reply transmission.
１個の親局Ｐ及びｎ個の子局Ｑｌ・・・Ｑｎはそれぞれ
電力線１に接続されて全体のシステムを構成している。One master station P and n slave stations Ql...Qn are each connected to a power line 1 to constitute the entire system.
親局Ｐの構成を説明すると、信号の処理と全体の制御を
行う制御部２に信号の入出力部３と基準クロック発生要
素４が接続され、基準クロックは制御部２を経由して同
期信号発生要素５に加わり、係る基準クロックにより同
期信号６が発生し、該同期信号６は変復調部７に加わり
、搬送波発生部８からの搬送波で変調されて変調信号９
となって結合部１ｏより電力線１に送出される。To explain the configuration of the master station P, a signal input/output section 3 and a reference clock generation element 4 are connected to a control section 2 that processes signals and performs overall control. A synchronizing signal 6 is generated by the reference clock, and the synchronizing signal 6 is applied to a modulation/demodulation section 7, where it is modulated with a carrier wave from a carrier wave generation section 8 to produce a modulated signal 9.
and is sent to the power line 1 from the coupling part 1o.
子局Ｑからの返信１１は結合部１０及び変復調部７を介
して返信検定要素１２で検定され、制御部２に入力され
る。また、子局Ｑの構成及び動作は次のようになる。制
御部２には、信号の入出力を行う入出力部３と基準クロ
ック発生要素４が接続され、ｉ局Ｐからの信号は、電力
線１に接続された結合１０及び変復調部７を介して同期
信号検定要素１３に入力されるとともに制御部２に入力
される。同期信号検定要素１３で検定された同期信号６
は、制御部２に入力されて基準クロックと比較される。A reply 11 from the slave station Q is verified by a reply verification element 12 via a coupling section 10 and a modulation/demodulation section 7, and is input to the control section 2. Further, the configuration and operation of the slave station Q are as follows. An input/output section 3 for inputting and outputting signals and a reference clock generation element 4 are connected to the control section 2, and the signal from the i-station P is synchronized via a coupling 10 connected to the power line 1 and a modulation/demodulation section 7. The signal is input to the signal verification element 13 and also to the control section 2. Synchronization signal 6 verified by synchronization signal verification element 13
is input to the control unit 2 and compared with the reference clock.
該比較の結果に基づいて制御部２は、同期タイミングを
算出して記憶要素１４に記憶させる。係る子局が返信を
送出する場合は、制御部２より返信データと同期タイミ
ングが返信信号発生要素１５に加えられて返信信号が出
力される。Based on the result of the comparison, the control unit 2 calculates the synchronization timing and stores it in the storage element 14. When such a slave station sends a reply, the control unit 2 adds the reply data and synchronization timing to the reply signal generation element 15, and outputs the reply signal.
ｓｌに送出される。Sent to sl.
尚、本実胞例においては、親局と子局の構成をほぼ同じ
にしていることにより、製作が容易になっている。In this example, the configuration of the master station and slave station is almost the same, which facilitates production.
本発明によれば、同期信号として１個の親局がらの同期
信号をシステム全体で共通に使用するので、安定で確実
な同期をとることができ、高速伝送と１通信の信頼度を
上げることができる。また一定時間毎に同期信号を通信
しているので通信路としての電力線の状態をモニターで
きるとともに同期ずれを未然に防止でき、通信の信頼度
が高くなる。更に、データの送受信時にあらためら同期
をとる必要がないのでデータ伝送の実質速度を高速にで
きる。According to the present invention, since the synchronization signal from one master station is commonly used throughout the system as a synchronization signal, stable and reliable synchronization can be achieved, and high-speed transmission and reliability of one communication can be improved. I can do it. Furthermore, since a synchronization signal is communicated at regular intervals, it is possible to monitor the state of the power line serving as a communication path, and to prevent synchronization deviations, increasing the reliability of communication. Furthermore, since there is no need to perform synchronization when transmitting and receiving data, the actual speed of data transmission can be increased.
第１図は本発明の一実施例の親局のブロック図、第２図
は子局のブロック図、第３図は基本構成部、第４図は信
号伝送のタイムチャートである。
１・・・電力線、４・・・基準クロック発生要素、５・
・・同期信号発生要素、１２・・・返信検定要素、１３
・・・同期信号検定要素、１４・・・記憶要素、１５・
・・返信信号発生要素。
事 １ ！］
１Ｆ４ 図FIG. 1 is a block diagram of a master station according to an embodiment of the present invention, FIG. 2 is a block diagram of a slave station, FIG. 3 is a basic component, and FIG. 4 is a time chart of signal transmission. DESCRIPTION OF SYMBOLS 1... Power line, 4... Reference clock generation element, 5...
...Synchronization signal generation element, 12...Reply verification element, 13
...Synchronization signal verification element, 14...Storage element, 15.
...Reply signal generation element. Thing 1! ] 1F4 figure
Claims (1)
において、同期信号発生部、返信検定部、基準クロック
発生部を具備した１個の親局と、同期信号検定部、返信
信号発生部、基準クロック発生部、基準クロックを基本
時間単位として同期信号の同期タイミングを記憶する記
憶部とを具備した少なくとも１個の子局とより構成し、
上記親局よりー定時間毎に同期信号を送出し、上記同期
信号に同期して通信することを特徴とする電力線搬送通
信方式。1. In a power line carrier communication system that performs communication asynchronously with the power frequency, there is one master station equipped with a synchronization signal generation section, a reply verification section, and a reference clock generation section, a synchronization signal verification section, a reply signal generation section, and a reference clock generation section. at least one slave station equipped with a clock generator and a storage unit that stores the synchronization timing of the synchronization signal using the reference clock as a basic time unit;
A power line carrier communication system characterized in that the master station transmits a synchronization signal at regular intervals and communicates in synchronization with the synchronization signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61054796A JPS62213425A (en) | 1986-03-14 | 1986-03-14 | Power line carrier communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61054796A JPS62213425A (en) | 1986-03-14 | 1986-03-14 | Power line carrier communication system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62213425A true JPS62213425A (en) | 1987-09-19 |
Family
ID=12980715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61054796A Pending JPS62213425A (en) | 1986-03-14 | 1986-03-14 | Power line carrier communication system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62213425A (en) |
-
1986
- 1986-03-14 JP JP61054796A patent/JPS62213425A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4886981A (en) | Synchronizing circuit for a plurality of power units | |
| JPS5924578B2 (en) | Loop test equipment for data transmission section | |
| JPS6097749A (en) | Multi-dimension data communication device | |
| US4355423A (en) | Translator system for converting unipolar fiber optic signals to bipolar signals utilizing Manchester coding | |
| US20020007465A1 (en) | Method, modules and program modules for synchronization | |
| US4171517A (en) | Apparatus for synchronization control of a plurality of inverters | |
| SU948303A3 (en) | Device for time-compressed digital communication | |
| US5418496A (en) | Serial data clock recovery circuit using dual oscillator circuit | |
| JPS62213425A (en) | Power line carrier communication system | |
| GB1439070A (en) | System for indicating synchronisation of alternating current signals | |
| JPS5823984B2 (en) | Data signal transmission/reception method | |
| EP0817419A3 (en) | Deterministic exchange of data between synchronised systems separated by a distance | |
| JP2501581B2 (en) | Clock signal synchronizer | |
| KR100328757B1 (en) | A error preventing device of clock signal with switchover for transmission system | |
| JP2592250B2 (en) | Time display device | |
| JPH02142231A (en) | Jitterless optical transmitting system | |
| KR940006515B1 (en) | Syncronous signal and clock supply system for preventing slips | |
| JPS55161446A (en) | Synchronous cooperation system of duplex cyclic data transmission unit | |
| KR0126847B1 (en) | High speed signal interconnection system | |
| JPS6172443A (en) | Synchronizing system of digital multiplex transmission system | |
| JPS6318830A (en) | Spread spectrum communication system | |
| SU881809A1 (en) | Device for synchronizing telemechanics system | |
| JPH0955757A (en) | Start-up method for ring transmission system | |
| JPH077931B2 (en) | 2-wire data transmission system | |
| KR930001379Y1 (en) | Data transmission system |