JPH0683123B2 - Power line communication controller - Google Patents
Power line communication controllerInfo
- Publication number
- JPH0683123B2 JPH0683123B2 JP61132308A JP13230886A JPH0683123B2 JP H0683123 B2 JPH0683123 B2 JP H0683123B2 JP 61132308 A JP61132308 A JP 61132308A JP 13230886 A JP13230886 A JP 13230886A JP H0683123 B2 JPH0683123 B2 JP H0683123B2
- Authority
- JP
- Japan
- Prior art keywords
- control terminal
- power line
- load
- transmission request
- transmission
- 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
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)
- 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 本発明は分散化して配置された機器間で、電力線を信号
の伝送通信路として通信を行なうシステムの電力線通信
制御装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power line communication control device of a system for performing communication between devices arranged in a distributed manner by using a power line as a signal transmission communication path.
従来の技術 複数の機器を集中的に制御したり、現在の機器の状態を
モニタ監視することを目的として、各機器を伝送通信路
として電力線により結び、互いに信号を伝送し合う方法
がある。これは電力線の交流電圧上にこれより十分高い
周波数の通信用信号電圧を重畳して各機器間を通信させ
るシステムで、制御用の特別配線が不必要なことから、
設置に伴う手間や費用が小さいという特徴を持つ。この
システムでは、各機器が個々に自局アドレスを持ち、他
の機器への送信要求が生じた時は、自局アドレスと、送
信先を示す相手局アドレスと、動作指示を与えるコマン
ドとから構成される信号を伝送通信路である電力線へ送
信する。そして、これを受信した他の機器は、受信信号
の中に含まれる相手局アドレスを自局アドレスと比較
し、もしこれらが異なっていればこの信号内のコマンド
を無視し、もし一致していればこの信号内のコマンドに
従い動作を行なう。ここで機器とは、自己に接続された
負荷（電気器具など）のON/OFF状態を検知し、その情報
を負荷状態報知信号として電力線上に送信する機能と自
己に接続された負荷をON/OFF制御する機能を有した制御
端末や、電力線上の信号を送受信する通信機器と制御端
末に対して送信するON/OFF制御信号を発生する制御信号
発生機能と各制御端末の負荷がON状態かOFF状態かを表
示するモニタ機能とを有した電力線通信制御装置等のこ
とを言う。電力線通信制御装置は停電復帰時などの電源
投入時、各制御端末の負荷のON/OFF状態を知り、正常に
モニタ機能を動作させるために、各制御端末に対して順
次、その制御端末に接続された負荷の状態を問う負荷状
態確認信号の送信を行なう。この時の電力線通信制御装
置の内部動作について次の図を用いて詳しく説明する。
（ただし、これに関係しない他の機能に関しては、詳し
い動作説明を省略すると同時に、図面も省略する。） 第２図は従来の電力線通信制御装置の内部構成図であ
る。１は信号の伝送通信路である電力線である。２は電
力線１上へ信号を送信したり、電力線１上の信号を受信
したりする通信手段である。３は制御端末に対して自己
に接続された負荷の状態を問う負荷状態確認信号の送信
を要求する送信要求手段である。４は送信要求手段３の
出力により制御端末に対して負荷状態確認信号の送信を
行なうよう通信手段２を制御する演算制御手段である。2. Description of the Related Art For the purpose of centrally controlling a plurality of devices and monitoring and monitoring the current state of the devices, there is a method of connecting the devices with a power line as a transmission communication path and transmitting signals to each other. This is a system that communicates between devices by superimposing a communication signal voltage with a frequency sufficiently higher than this on the AC voltage of the power line, and because special wiring for control is unnecessary,
It has the feature that the labor and cost involved in installation are small. In this system, each device has its own station address, and when a request to send to another device occurs, it consists of its own station address, the partner station address indicating the destination, and a command that gives an operation instruction. The transmitted signal is transmitted to the power line which is the transmission communication path. Then, the other device receiving this compares the address of the partner station included in the received signal with its own address, and if they are different, ignores the command in this signal, and if they match. For example, it operates according to the command in this signal. Here, the device is a function that detects the ON / OFF state of the load (electrical device, etc.) connected to itself and sends that information as a load state notification signal on the power line and turns on / off the load connected to itself. Whether the control terminal that has the function to control OFF, the communication device that transmits and receives signals on the power line and the control signal generation function that generates the ON / OFF control signal that is transmitted to the control terminal, and whether the load on each control terminal is in the ON state This refers to a power line communication control device, etc. that has a monitor function for displaying whether it is in the OFF state. The power line communication control device connects to each control terminal in order to know the ON / OFF status of the load on each control terminal when the power is turned on, such as when power is restored, and to operate the monitor function normally. A load state confirmation signal for asking the state of the applied load is transmitted. The internal operation of the power line communication control device at this time will be described in detail with reference to the following drawings.
(However, regarding other functions not related to this, detailed description of the operation is omitted as well as the drawings.) FIG. 2 is an internal configuration diagram of a conventional power line communication control device. 1 is a power line which is a signal transmission communication path. Reference numeral 2 is a communication means for transmitting a signal to the power line 1 and receiving a signal on the power line 1. Reference numeral 3 is a transmission requesting means for requesting the control terminal to transmit a load state confirmation signal for asking the state of the load connected to itself. Reference numeral 4 is an arithmetic control means for controlling the communication means 2 so as to transmit a load state confirmation signal to the control terminal by the output of the transmission request means 3.
以上のように構成された電力線通信制御装置について以
下その動作を説明する。まず停電復帰時などの電源投入
時に送信要求手段３に複数の制御端末に対しての送信要
求が生じる。するとこの出力を受けた演算制御手段４
は、自局アドレスと、送信要求が生じた制御端末の自局
アドレスである相手局アドレスと、負荷状態確認コマン
ドとから構成される負荷状態確認信号を、送信要求が生
じた制御端末に対して順次送信するよう通信手段２を制
御する。以上が電力線通信制御装置の内部動作である
が、この負荷状態確認信号を電力線１を介して受信した
制御端末は、自己に接続された負荷のON/OFF状態を負荷
状態報知信号として電力線１上へ送信するので、これを
受信することにより電力線通信制御装置は、各制御端末
の負荷のON/OFF状態を知ることができ、正常に負荷のモ
ニタ機能が作動するようになる。The operation of the power line communication control device configured as described above will be described below. First, when the power is turned on such as when power is restored, a transmission request is made to the plurality of control terminals by the transmission request means 3. Then, the arithmetic control means 4 which receives this output
Sends a load status confirmation signal composed of its own station address, the partner station address that is the own station address of the control terminal that made the transmission request, and a load status confirmation command to the control terminal that made the transmission request. The communication means 2 is controlled so as to transmit sequentially. The above is the internal operation of the power line communication control device, but the control terminal which has received this load state confirmation signal via the power line 1 uses the ON / OFF state of the load connected to itself as the load state notification signal on the power line 1. By transmitting this to the power line communication control device, the power line communication control device can know the ON / OFF state of the load of each control terminal, and the load monitoring function operates normally.
発明が解決しようとする問題点 しかしながら前述のような構成では、電力線通信制御装
置が同一電力線上に複数台存在した場合、本来なら停電
復帰後に１つの制御端末に対して１回のみ負荷状態確認
信号を送信すれば十分であるのに、例えばシステム増設
をした場合複数台の電力線通信制御装置が複数回、同一
制御端末に対し同一信号を送信することになってしま
い、それにより同一制御端末が複数回、負荷状態報知信
号を送信することになり、大変効率の悪いシステムとな
ってしまう。また、電力線通信制御装置がまだ負荷状態
確認信号を送信していない制御端末から、負荷状態報知
信号を受信した場合、その制御端末に対してはもう負荷
状態確認信号を送る必要性がないにもかかわらず送信し
てしまうことになる。以上のように従来例では、システ
ムが大きくなるにつれて停電復帰時などに不必要な信号
が重複して電力線上に送信されることが多く、それによ
りシステムが正常な動作をするまでに、多大な時間を必
要としていた。DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, in the configuration as described above, when a plurality of power line communication control devices exist on the same power line, a load state confirmation signal should normally be sent only once to one control terminal after power failure recovery. Although it is sufficient to transmit the same signal, for example, when the system is expanded, a plurality of power line communication control devices will transmit the same signal to the same control terminal a plurality of times. The load state notification signal is transmitted once, resulting in a very inefficient system. Further, when the power line communication control device receives the load state notification signal from the control terminal that has not yet transmitted the load state confirmation signal, it is no longer necessary to send the load state confirmation signal to the control terminal. However, it will be sent. As described above, in the conventional example, as the system becomes larger, unnecessary signals are often duplicated and transmitted on the power line at the time of power failure recovery, which causes a large amount of time until the system operates normally. I needed time.
本発明はこのような問題点を解決するもので、前述のよ
うな停電復帰時にも不必要な信号が電力線上に送信され
ることなく、迅速にシステムが立ち上がるように動作す
る電力線通信制御装置を提供することを目的としてい
る。The present invention solves such a problem, and a power line communication control device that operates so that the system starts up quickly without an unnecessary signal being transmitted on the power line even when the power failure is restored as described above is provided. It is intended to be provided.
問題点を解決するための手段 この目的を達成するために本発明の電力線通信制御装置
は、個々に自局アドレスを有する制御端末に対して自己
に接続された負荷の状態を問う負荷状態確認信号の送信
を要求する送信要求手段と、電力線を通信伝送路として
前記制御端末等と信号の送受信を行なう通信手段と、前
記送信要求手段内の指定されたアドレスを有する制御端
末に対する送信要求を解除する送信要求解除手段と、前
記制御端末から自己に接続された負荷の状態を報知する
負荷状態報知信号を前記通信手段により受信した際、及
び他局が前記負荷状態確認信号を前記制御端末に対して
送信したことを前記通信手段により検知した際に、前記
送信要求解除手段に対してこの制御端末のアドレスに対
応する送信要求を解除するよう指令する演算制御手段と
から構成されている。Means for Solving the Problems In order to achieve this object, the power line communication control device of the present invention is a load state confirmation signal for inquiring the state of the load connected to the control terminal individually having its own station address. Transmission requesting means for requesting transmission of data, communication means for transmitting and receiving signals to and from the control terminal using a power line as a communication transmission path, and canceling the transmission request to the control terminal having the designated address in the transmission requesting means. When the transmission request canceling means and the load status notification signal for notifying the status of the load connected to itself from the control terminal are received by the communication means, and another station sends the load status confirmation signal to the control terminal. A calculation for instructing the transmission request canceling means to cancel the transmission request corresponding to the address of the control terminal when the communication means detects the transmission. And control means.
作 用 本発明は上記した構成により、電力線通信制御装置が複
数台存在するシステムの停電復帰時にも、演算制御手段
が制御端末から自己に接続された負荷の状態を報知する
負荷状態報知信号を通信手段により受信した際、及び他
局が制御端末に対して負荷状態確認信号を送信したこと
を検知した際、送信要求解除手段に対してこの制御端末
のアドレスに対応する送信要求を解除するよう指令する
ことにより、不必要な信号が電力線上に送信されること
なく、迅速にシステムが立ち上がるようになる。Operation According to the present invention, with the above-described configuration, the arithmetic control unit communicates the load state notification signal for notifying the state of the load connected to itself from the control terminal even when the system including a plurality of power line communication control devices recovers from a power failure. When it is received by the means and when it is detected that another station has transmitted a load state confirmation signal to the control terminal, the transmission request cancellation means is instructed to cancel the transmission request corresponding to the address of this control terminal. By doing so, the system can be started up quickly without unnecessary signals being transmitted on the power line.
実施例 以下本発明の一実施例について、図面を参照しながら説
明する。ただし従来例において、一般的な電力線通信制
御装置の機能については説明済みなので、ここでは従来
例で問題となった停電復帰時の動作についてのみ説明す
る。したがって、図面においても説明に必要としない他
の機能は省略している。Embodiment An embodiment of the present invention will be described below with reference to the drawings. However, in the conventional example, since the function of the general power line communication control device has been described, only the operation at the time of power failure recovery, which is a problem in the conventional example, will be described here. Therefore, also in the drawings, other functions not necessary for the description are omitted.
第１図は本発明の一実施例における電力線通信制御装置
の内部構成図である。５は信号の伝送通信路である電力
線である。６は電力線５上へ信号を送信したり、電力線
５上の信号を受信したりする通信手段である。７は制御
端末に対して自己に接続された負荷の状態を問う負荷状
態確認信号の送信を要求する送信要求手段である。８は
送信要求手段内の指定されたアドレスを有する制御端末
に対する送信要求を解除する送信要求解除手段である。
９は制御端末から自己に接続された負荷の状態を報知す
る負荷状態報知信号を通信手段６により受信した際、及
び他局が負荷状態確認信号を制御端末に対して送信した
ことを通信手段６により検知した際に、送信要求解除手
段８に対してこの制御端末のアドレスに対応する送信要
求を解除するよう指令する演算制御手段である。FIG. 1 is an internal configuration diagram of a power line communication control device according to an embodiment of the present invention. A power line 5 is a signal transmission communication path. Reference numeral 6 is a communication means for transmitting a signal to the power line 5 and receiving a signal on the power line 5. Reference numeral 7 is a transmission requesting means for requesting the control terminal to transmit a load state confirmation signal for inquiring the state of the load connected to the control terminal. Reference numeral 8 is a transmission request canceling means for canceling the transmission request to the control terminal having the designated address in the transmission requesting means.
The communication means 6 indicates when the communication means 6 receives a load status notification signal for notifying the status of the load connected to itself from the control terminal, and that another station has transmitted a load status confirmation signal to the control terminal. When it is detected by the above, it is a calculation control means for instructing the transmission request canceling means 8 to cancel the transmission request corresponding to the address of this control terminal.
以上のように構成された電力線通信制御装置について、
以下その動作について説明する。まず停電復帰時などの
電源投入時に送信要求手段７に複数の制御端末に対して
の負荷状態確認信号の送信要求が生じる。するとこの出
力を受けた演算制御手段９は、自局アドレスと、送信要
求が生じた制御端末の自局アドレスである相手局アドレ
スと、負荷状態確認コマンドとから構成される負荷状態
確認信号を、送信要求が生じた制御端末に対して順次送
信するよう通信手段６を制御する。また演算制御手段９
は、制御端末から自己に接続された負荷の状態を報知す
る負荷状態報知信号を通信手段６により受信した際、及
び他局が負荷状態確認信号を制御端末に対して送信した
ことを通信手段６により検知した際、送信要求解除手段
８に対してこの制御端末のアドレスに対応する送信要求
を解除するよう指令する。そしてこれを受けた送信要求
解除手段８は、送信要求手段７のこのアドレスに対する
送信要求を解除する。したがって、このアドレスを自局
アドレスとする制御端末へは負荷状態確認信号が送信さ
れないことになる。Regarding the power line communication control device configured as described above,
The operation will be described below. First, when the power is turned on such as when power is restored, a request for transmission of load state confirmation signals to the plurality of control terminals is issued to the transmission request means 7. Then, the arithmetic control means 9 receiving this output sends a load state confirmation signal composed of the own station address, the partner station address which is the own station address of the control terminal which made the transmission request, and the load state confirmation command, The communication means 6 is controlled so as to sequentially transmit to the control terminal that has made the transmission request. The arithmetic control means 9
The communication means 6 indicates that the communication means 6 has received a load status notification signal for notifying the status of the load connected to itself from the control terminal, and that another station has transmitted a load status confirmation signal to the control terminal. When it is detected by, the transmission request canceling means 8 is instructed to cancel the transmission request corresponding to the address of this control terminal. Upon receiving this, the transmission request canceling means 8 cancels the transmission request to the address of the transmission requesting means 7. Therefore, the load state confirmation signal is not transmitted to the control terminal that uses this address as its own address.
以上のように本実施例によれば、制御端末から負荷状態
報知信号を受信した際、及び他局が制御端末に対して負
荷状態確認信号を送信したことを検知した際は、その制
御端末に対する負荷状態確認信号の送信を中止すること
により、複数台電力線通信制御装置が同一システム内に
存在する場合の停電復帰時にも、不必要な信号が電力線
上に送信されることなく、迅速にシステムが立ち上がる
ようになる。As described above, according to the present embodiment, when the load status notification signal is received from the control terminal and when it is detected that another station has sent the load status confirmation signal to the control terminal, the control terminal By stopping the transmission of the load status confirmation signal, even if multiple power line communication control devices exist in the same system, even if the power is restored, unnecessary signals will not be sent on the power line, and the system can be operated quickly. You will get up.
なお、本実施例においては停電復帰時についてのみ記し
たが、これは制御端末に対する負荷状態確認信号の送信
要求が生じた際には全く同じように動作する。In the present embodiment, the description is given only when the power is restored, but the same operation is performed when a load condition confirmation signal transmission request is issued to the control terminal.
発明の効果 以上のように本発明の電力線通信制御装置は、個々に自
局アドレスを有する制御端末に対して自己に接続された
負荷の状態を問う負荷状態確認信号の送信を要求する送
信要求手段と、電力線を通信伝送路として前記制御端末
等と信号の送受信を行なう通信手段と、前記送信要求手
段内の指定されたアドレスを有する制御端末に対する送
信要求を解除する送信要求解除手段と、前記制御端末か
ら自己に接続された負荷の状態を報知する負荷状態報知
信号を前記通信手段により受信した際、及び他局が前記
負荷状態確認信号を前記制御端末に対して送信したこと
を前記通信手段により検知した際に、前記送信要求解除
手段に対してこの制御端末のアドレスに対応する送信要
求を解除するよう指令する演算制御手段とを有するか
ら、電力線通信制御装置が１回でも制御端末への負荷状
態確認信号を送信した場合に、他局の負荷状態確認信号
がその制御端末へ送信されないばかりでなく、制御端末
の負荷状態報知信号が先行されて送信された場合、その
制御端末への負荷状態確認信号を１回も送信しなくな
り、複数台電力線通信制御装置が同一システム内に存在
する場合の停電復帰時にも、不必要な信号が電力線上に
送信されることなく、迅速にシステムが立ち上がるよう
になり、その効果は大なるものがある。EFFECTS OF THE INVENTION As described above, the power line communication control device of the present invention requests the transmission of the load state confirmation signal for inquiring the state of the load connected to the control terminal individually having the own station address. Communication means for transmitting and receiving signals to and from the control terminal and the like using a power line as a communication transmission path, transmission request canceling means for canceling a transmission request to a control terminal having a designated address in the transmission requesting means, and the control When the load state notification signal for notifying the state of the load connected to itself from the terminal is received by the communication means, and by the communication means that another station has transmitted the load state confirmation signal to the control terminal. When the detection is made, the transmission request canceling means is instructed to cancel the transmission request corresponding to the address of this control terminal. When the line communication control device transmits the load status confirmation signal to the control terminal even once, not only the load status confirmation signal of another station is not transmitted to the control terminal, but also the load status notification signal of the control terminal is preceded. When the power is transmitted, the load status confirmation signal to the control terminal will not be transmitted even once, and unnecessary signals will be transmitted on the power line even when a power failure is restored when multiple power line communication control devices exist in the same system. The system starts up quickly without being sent to, and the effect is great.
第１図は本発明の一実施例における電力線通信制御装置
の内部構成図、第２図は従来の電力線通信制御装置の内
部構成図である。 ５……電力線、６……通信手段、７……送信要求手段、
８……送信要求解除手段、９……演算制御手段。FIG. 1 is an internal configuration diagram of a power line communication control device in one embodiment of the present invention, and FIG. 2 is an internal configuration diagram of a conventional power line communication control device. 5 ... power line, 6 ... communication means, 7 ... transmission request means,
8 ... Transmission request releasing means, 9 ... Arithmetic control means.
Claims (1)
して自己に接続された負荷の状態を問う負荷状態確認信
号の送信を要求する送信要求手段と、電力線を通信伝送
路として前記制御端末等と信号の送受信を行なう通信手
段と、前記送信要求手段内の指定されたアドレスを有す
る制御端末に対する送信要求を解除する送信要求解除手
段と、前記制御端末から自己に接続された負荷の状態を
報知する負荷状態報知信号を前記通信手段により受信し
た際、及び他局が前記負荷状態確認信号を前記制御端末
に対して送信したことを前記通信手段により検知した際
に、前記送信要求解除手段に対してこの制御端末のアド
レスに対応する送信要求を解除するよう指令する演算制
御手段とを有する電力線通信制御装置。1. A transmission request means for requesting the transmission of a load state confirmation signal for inquiring the state of a load connected to itself to a control terminal having its own address, and the control terminal using a power line as a communication transmission line. Communication means for transmitting and receiving signals to and from the transmission request canceling means for canceling the transmission request to the control terminal having the designated address in the transmission requesting means, and the state of the load connected to itself from the control terminal. When the load status notification signal for notification is received by the communication means, and when the communication means detects that another station has transmitted the load status confirmation signal to the control terminal, the transmission request canceling means On the other hand, a power line communication control device having an arithmetic control means for instructing to cancel the transmission request corresponding to the address of the control terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61132308A JPH0683123B2 (en) | 1986-06-06 | 1986-06-06 | Power line communication controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61132308A JPH0683123B2 (en) | 1986-06-06 | 1986-06-06 | Power line communication controller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62287722A JPS62287722A (en) | 1987-12-14 |
| JPH0683123B2 true JPH0683123B2 (en) | 1994-10-19 |
Family
ID=15078271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61132308A Expired - Lifetime JPH0683123B2 (en) | 1986-06-06 | 1986-06-06 | Power line communication controller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0683123B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0282821A (en) * | 1988-09-20 | 1990-03-23 | Fujitsu Denso Ltd | Power line carrier communication equipment |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57106261A (en) * | 1980-12-22 | 1982-07-02 | Yokogawa Hokushin Electric Corp | Data transmission device |
-
1986
- 1986-06-06 JP JP61132308A patent/JPH0683123B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62287722A (en) | 1987-12-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |