JPH03250934A - Time division multiplex transmission control system - Google Patents
Time division multiplex transmission control systemInfo
- Publication number
- JPH03250934A JPH03250934A JP4789190A JP4789190A JPH03250934A JP H03250934 A JPH03250934 A JP H03250934A JP 4789190 A JP4789190 A JP 4789190A JP 4789190 A JP4789190 A JP 4789190A JP H03250934 A JPH03250934 A JP H03250934A
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- Japan
- Prior art keywords
- control
- terminal device
- main operating
- operating device
- control signal
- Prior art date
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Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、主操作装置と複数の端末器との間に伝送線
を介して時分割多重伝送信号を送受し端末器に接続され
た負荷を制御する時分割多重伝送方式に関するものであ
る。[Detailed Description of the Invention] [Field of Industrial Application] This invention transmits and receives time-division multiplexed transmission signals between a main operating device and a plurality of terminal devices via a transmission line. This relates to a time division multiplex transmission system for controlling
第４図は特開昭５６−８６０４１号公報に記載された構
成に基づ〈従来の時分割多重伝送方式を用いた制御装置
の回路構成図である。FIG. 4 is a circuit configuration diagram of a control device using a conventional time division multiplex transmission system based on the configuration described in Japanese Patent Application Laid-Open No. 56-86041.
第４図において、１は電力線（以下伝送線と呼ぶ）であ
り、この例の場合は電力線搬送方式の伝送を行っている
ために伝送線も兼ねている。２は主操作装置であり、こ
の主操作装置２は論理回路部３、受信増幅部４ａ、発振
回路５ａ、クロック発生回路６ ａ 、結合回路７ａ、
チャンネル設定部８ａ、および操作スイッチ９Ａ、９Ｂ
から構成されている。また、１０は端末器であり、この
端末器１０は論理回路部１１、受信増幅部４ｂ、発振回
路５ｂ、クロック発生回路６ｂ、結合回路７ｂ、チャン
ネル設定部８ｂ、および負荷制御用のリレー１２Ａ、１
２Ｂから構成されている。In FIG. 4, reference numeral 1 denotes a power line (hereinafter referred to as a transmission line), and in this example, it also serves as a transmission line because transmission is performed using a power line carrier method. 2 is a main operating device, and this main operating device 2 includes a logic circuit section 3, a reception amplifier section 4a, an oscillation circuit 5a, a clock generation circuit 6a, a coupling circuit 7a,
Channel setting section 8a and operation switches 9A, 9B
It consists of Further, 10 is a terminal device, and this terminal device 10 includes a logic circuit section 11, a reception amplifier section 4b, an oscillation circuit 5b, a clock generation circuit 6b, a coupling circuit 7b, a channel setting section 8b, and a relay 12A for load control. 1
It is composed of 2B.
上記クロック発生回路６ａ、６ｂは商用電源の半周期に
同期したクロック信号を発生する。論理回路部３はマイ
クロコンピュータ等で実現すれ上記クロック信号に基づ
いて商用電源の各半周期に同期した送信データを作成す
る。発振回路５ａ。The clock generation circuits 6a and 6b generate clock signals synchronized with a half cycle of the commercial power supply. The logic circuit section 3 is realized by a microcomputer or the like and creates transmission data synchronized with each half cycle of the commercial power supply based on the above clock signal. Oscillation circuit 5a.
５ｂは上記送信データにより発振が断続された搬送信号
を出力する。結合回路７ａは上記搬送信号を伝送線（電
力線）１に重畳する。操作スイッチ９Ａ、９Ｂは上記送
信データの送出制御する。受信増幅部４ａ、４ｂは結合
回路７ａ、７ｂからの受信信号を増幅する。チャンネル
設定部３ａ。5b outputs a carrier signal whose oscillation is intermittent according to the transmission data. The coupling circuit 7a superimposes the carrier signal on the transmission line (power line) 1. The operation switches 9A and 9B control the transmission of the transmission data. The reception amplification sections 4a, 4b amplify the reception signals from the coupling circuits 7a, 7b. Channel setting section 3a.
８ｂは自己のアドレスを設定する。リレー１２Ａ。8b sets its own address. Relay 12A.
１２Ｂは端末器１０に接続される負荷を制御する。12B controls the load connected to the terminal device 10.
結合回路７ｂは伝送線１に重畳されている搬送信号を商
用電源より分離する。論理回路部１１はチャンネル設定
部８ｂで設定されたアドレスデータと同一のアドレスデ
ータが入力されたときのみ上記送信データに基づいて所
定の機器（負荷）に対する制御信号を出力する。The coupling circuit 7b separates the carrier signal superimposed on the transmission line 1 from the commercial power source. The logic circuit section 11 outputs a control signal to a predetermined device (load) based on the transmission data only when the same address data as the address data set by the channel setting section 8b is input.
第５図は第４図中の端末器１０の動作を示すフローチャ
ートである。第５図において、制御データを受信したか
否かを判定しくステップ５５１）、受信した場合、それ
が自分のチャンネルのものであるか否かを判定しくステ
ップ５５２）、自分のチャンネルである場合、データを
出力しくステップ５５３）、確認信号を主操作装置２へ
返信する（ステップ５５４）。FIG. 5 is a flowchart showing the operation of the terminal device 10 in FIG. In FIG. 5, it is determined whether or not control data is received (step 551), and if it is received, it is determined whether it belongs to the own channel or not (step 552), and if it is the own channel, The data is output (step 553), and a confirmation signal is sent back to the main operating device 2 (step 554).
このように構成された制御装置において、主操作装置２
の操作スイッチ９Ａ又は９Ｂを操作するとチャンネル設
定部８ａで設定されたアドレスに対してデータを送信す
る。伝送線１に送出されたデータを端末器１０は監視し
ており、受信データが自分のアドレスであった場合は、
データをリレー１２Ａ、又は１２Ｂに出力し、確認信号
を主操作装置２に送信する。In the control device configured in this way, the main operating device 2
When the operation switch 9A or 9B is operated, data is transmitted to the address set in the channel setting section 8a. The terminal device 10 monitors the data sent to the transmission line 1, and if the received data is its own address,
The data is output to the relay 12A or 12B, and a confirmation signal is sent to the main operating device 2.
従来の時分割多重伝送制御方式による制御装置はこのよ
うに構成されているので、複数の端末器を一括して制御
する一斉同報を利用して制御した場合は、複数の端末器
の制御状態が変化して、状態の変化通報を送信しようと
するために伝送路上で信号の衝突が発生するので通報の
終了までの時間が多くかかるという問題点があった。Since the control device using the conventional time division multiplex transmission control method is configured in this way, when controlling multiple terminals using simultaneous broadcasting, the control status of multiple terminals can be changed. There is a problem in that it takes a long time to complete the notification because signal collision occurs on the transmission path when the state change notification is sent.
この発明は上記のような問題点を解決するためになされ
たもので、端末器を一括して制御する一斉同報を行って
も、伝送路上で信号の衝突を防止し、効率の良い通信を
可能とする時分割多重伝送制御方式を得ることを目的と
する。This invention was made to solve the above-mentioned problems, and even when performing simultaneous broadcasting that controls terminals all at once, it prevents signal collisions on the transmission path and allows efficient communication. The purpose of this study is to obtain a time-division multiplex transmission control system that makes it possible.
この発明に係る時分割多重伝送制御方式においては、各
端末器１５は主操作装置工３からの個別制御信号を受信
して自己の制御状態が変化した場合には、自己の変化し
た状態を自発的に主操作装置１３へ通報すると共に、主
操作装置１３からの一斉同報制御信号を受信した場合は
、自己の制御状態が変化した場合においても、主操作装
置１３への自発的な通報を禁止し、主操作装置１３から
の個別制御信号を受信することにより自発的な通報の禁
止を解除することを特徴とするものである。In the time division multiplex transmission control system according to the present invention, when each terminal device 15 receives an individual control signal from the main operating device 3 and changes its own control state, it automatically changes its own changed state. In addition to automatically reporting to the main operating device 13, if a simultaneous broadcast control signal is received from the main operating device 13, even if the control state of the control device changes, the main operating device 13 is automatically notified. This feature is characterized in that the prohibition of spontaneous reporting is canceled by receiving an individual control signal from the main operating device 13.
〔作用〕。[Effect].
主操作装置１３からの個別制御信号が端末器１５に受信
され、端末器１５の制御状態が変化すると、その変化状
態が端末器１５から主操作装置１３へ通報される。また
、主操作装置１３からの一斉同報制御信号が端末器１５
に受信され、端末器１５の制御状態が変化した場合でも
、端末器１５から主操作装置１３への通報は行われず、
そして主操作装置１３からの個別制御信号が端末器１５
に受信されると、通報の禁止は解除される。When the individual control signal from the main operating device 13 is received by the terminal device 15 and the control state of the terminal device 15 changes, the changed state is reported from the terminal device 15 to the main operating device 13. Also, the simultaneous broadcast control signal from the main operating device 13 is transmitted to the terminal device 15.
Even if the control state of the terminal device 15 changes, the terminal device 15 does not notify the main operating device 13.
Then, the individual control signal from the main operating device 13 is transmitted to the terminal device 15.
Once received, the prohibition on reporting is lifted.
第３図はこの発明の一実施例に係る時分割多重伝送制御
方式を用いた制御装置の構成を示すブロック図である。FIG. 3 is a block diagram showing the configuration of a control device using a time division multiplex transmission control system according to an embodiment of the present invention.
第３図において、第４図に示す構成要素に対応するもの
には同一の符号を付し、その説明を省略する。第３図に
おいて、１３は主操作装置、１５は主操作袋？１ｆ１３
によって操作される複数台の端末器である。主操作装置
１３内の論理回路部１４は、端末器１５へ送信する送信
データ、各端末器１５を個別に制御するための個別制御
信号、及び全端末器１５を一斉制御するための一斉回報
制御信号を作成するものである。端末器１５内の論理回
路部１６は、主操作装置１３からの個別制御信号を受信
して自己の制御状態が変化した場合には自己の変化した
状態を自発的に主操作装置１３へ通報すると共に、主操
作装置１３からの一斉同報制御信号を受信した場合は、
自己の制御状態が変化した場合においても、主操作装置
１３への自発的な通報を禁止し、主操作装置１３からの
個別制御信号を受信することにより自発的な通報の禁止
を解除する制御などを行うものである。In FIG. 3, components corresponding to those shown in FIG. 4 are designated by the same reference numerals, and their explanations will be omitted. In Fig. 3, 13 is the main operating device, and 15 is the main operating bag? 1f13
These are multiple terminal devices operated by. The logic circuit section 14 in the main operating device 13 generates transmission data to be transmitted to the terminal device 15, individual control signals for individually controlling each terminal device 15, and simultaneous broadcast control for controlling all the terminal devices 15 at once. It creates a signal. When the logic circuit section 16 in the terminal device 15 receives an individual control signal from the main operating device 13 and its own control state changes, it spontaneously reports the changed state to the main operating device 13. At the same time, if a simultaneous broadcast control signal is received from the main operating device 13,
Control, etc. that prohibits voluntary reporting to the main operating device 13 even when its own control state changes, and cancels the prohibition of voluntary reporting by receiving an individual control signal from the main operating device 13. This is what we do.
次に第１図中の端末器１５における制御信号受信時のリ
レー１２Ａ、１２Ｂに対する制御、並びに主操作装置１
３に対する確認信号を送信する際の制御の流れを説明す
る。ここで、主操作装置１３の操作スイッチ９Ａを操作
することにより一斉同報制御信号を用いて各端末器１５
の出力状態がＯＮされ、操作スイッチ９Ｂを操作するこ
とにより一斉同報制御信号を用いて各端末器１５の出力
状態がＯＦＦされるように予め設定されている”ものと
する。Next, when the terminal device 15 in FIG. 1 receives a control signal, the relays 12A and 12B are controlled, and the main operating device 1
The flow of control when transmitting the confirmation signal for 3 will be explained. Here, by operating the operation switch 9A of the main operation device 13, each terminal device 15 uses a simultaneous broadcast control signal.
It is assumed that the output state of each terminal device 15 is set in advance so that the output state is turned on, and the output state of each terminal device 15 is turned off using the simultaneous broadcast control signal by operating the operation switch 9B.
このように設定されているときに、主操作装置１３の操
作スイッチ９Ａを操作すると、主操作装置１３は一斉同
報制御信号を用いて各端末器１５に対して出力状態をＯ
Ｎにするための制御信号を送信する。このＯＮ制御信号
を受信した端末器１５はリレー１２Ａ又は１２Ｂを制御
し、負荷を制御する。このような制御を行うことにより
、端末器１５は制御状態が変化しても、−斉同報制御信
号を受信したので、自発的な確認信号の送信を行わない
。When the operation switch 9A of the main operating device 13 is operated when the settings are made in this way, the main operating device 13 uses the simultaneous broadcast control signal to change the output state to each terminal device 15.
Send a control signal to set the value to N. The terminal device 15 that receives this ON control signal controls the relay 12A or 12B to control the load. By performing such control, even if the control state changes, the terminal device 15 does not spontaneously transmit a confirmation signal since it has received the -broadcast control signal.
このような制御を第１図に示すフローチャートを参照し
て説明する。ステップＳ１では端末器１５は制御信号を
受信したか否かを判断し、それを受信するとステップＳ
２でその制御信号は自分のチャンネル宛ての個別制御信
号であるか否かを判断する。個別制御信号であると、ス
テップＳ３で該当する制御を行い、ステップＳ４で自発
通報禁止を解除して、ステップＳ５でｎ認信号を主操作
装置１３へ返送する。一方、ステップＳ２で個別制御信
号でないと判断されたとき、ステップＳ６へ進み、−斉
同報による制御信号であるか否かを判断し、−斉同報制
御信号であるとき、ステップＳ７でそれに該当する制御
を行い、ステップＳ８で自発通報の禁止を行う。Such control will be explained with reference to the flowchart shown in FIG. In step S1, the terminal device 15 determines whether or not it has received a control signal, and when it receives it, step S1
In step 2, it is determined whether the control signal is an individual control signal addressed to its own channel. If it is an individual control signal, the corresponding control is performed in step S3, the inhibition of spontaneous reporting is canceled in step S4, and the n-acknowledgement signal is returned to the main operating device 13 in step S5. On the other hand, when it is determined in step S2 that the signal is not an individual control signal, the process proceeds to step S6, and - it is determined whether or not the control signal is a simultaneous broadcast control signal. Appropriate control is performed, and spontaneous reporting is prohibited in step S8.
次に第３図中の主操作装置１３が端末器１５に対する一
斉同報制御、並びに端末器１５が主操作装置１３に対す
る状態確認信号を送信する際の制御の流れを説明する。Next, the flow of control when the main operating device 13 in FIG. 3 performs simultaneous broadcast control on the terminal device 15 and when the terminal device 15 transmits a status confirmation signal to the main operating device 13 will be explained.
主操作装置１３の論理回路部１４は一斉同報による制御
信号を送信後制御対象となった各端末器１５に対するモ
ニタ要求フラグを立てて、モニタアドレスデータと照合
してモニタアドレスデータの示す端末器１５のアドレス
にモニタ要求フラグが立っていた場合に、そのアドレス
の端末器１５に対して個別の状態通報要求コマンドを送
信するとともに送信した端末器１５に対するモニタ要求
フラグを下げ、モニタアドレスデータを更新する。After transmitting the control signal by simultaneous broadcasting, the logic circuit section 14 of the main operating device 13 sets a monitor request flag for each terminal device 15 that is the object of control, and checks the terminal device indicated by the monitor address data by comparing it with the monitor address data. If the monitor request flag is set for the address 15, an individual status report request command is sent to the terminal 15 at that address, the monitor request flag for the sent terminal 15 is lowered, and the monitor address data is updated. do.
上記状態通報要求コマンドは、個別制御のコマンドであ
るので、端末器１５の状態を主操作装置１３へ通報し、
端末器１５の自発的な送信の禁止を解除するものである
。Since the status report request command is an individual control command, it reports the status of the terminal device 15 to the main operating device 13,
This is to cancel the prohibition of spontaneous transmission by the terminal device 15.
次にこのような制御を第２図に示すフローチャートを参
照して説明する。主操作装置１３においては、端末器１
５に対する個別のモニタ信号を送信中に操作スイッチ９
Ｂが操作されると、ＯＦＦの制御信号を一斉同報により
送信しくステップ８１１．３１２）、主操作装置１３の
論理回路部１４は一斉同報による制御信号を送信後制御
対象となった各端末器１５に対するモニタ要求フラグを
立てて（ステップ５１３）、モニタアドレスデータと照
合して（ステップ５１４）、更新されたモニタアドレス
データの示す端末器１５のアドレスにモニタ要求フラグ
が立っていた場合に（ステップ５１５）、そのアドレス
の端末器１５に対して個別の状態通報要求コマンドを送
信する（ステップ５１７）とともに送信した端末器１５
に対するモニタ要求フラグを下げ（ステップ５１８）、
ステップ３１９の他の処理を行い、上記と同様な処理を
行って、モニタアドレスデータを更新する（ステップ５
１６）。Next, such control will be explained with reference to the flowchart shown in FIG. In the main operating device 13, the terminal device 1
Operation switch 9 while transmitting individual monitor signals for 5
When B is operated, an OFF control signal is transmitted by simultaneous broadcast (Steps 811 and 312), and the logic circuit section 14 of the main operating device 13 transmits a control signal by simultaneous broadcast to each terminal to be controlled. A monitor request flag for the terminal device 15 is set (step 513), and compared with the monitor address data (step 514), and if the monitor request flag is set at the address of the terminal device 15 indicated by the updated monitor address data, ( Step 515), sends an individual status report request command to the terminal device 15 at that address (step 517) and the terminal device 15 that sent the command.
lowers the monitor request flag for (step 518),
Perform other processing in step 319, perform processing similar to the above, and update monitor address data (step 5
16).
この第２図に示す処理によれば、主操作装置１３におい
て、−斉同報送信後に制御対象となった各端末器１５に
対して個別に負荷制御状態のモニタ信号を送信するので
、−斉同報による制御後に端末器１５からの自発送信が
こなくても、端末器１５の制御状態を把握することがで
きる。また、主操作装置１３は端末器１５をモニタする
順番を管理し、全ての端末器１５に対するモニタを終わ
る前に、次の一斉回報の送信要求が生じた場合には一斉
同軸の送信終了後に、続きの端末器１５からモニタする
ので、−斉同報の制御要求が顧繁に発生し、−斉同報に
よる制御後に端末器１５からの自発送信が来なくても、
平均的に端末器１５の制御状態を把握することができる
。According to the process shown in FIG. 2, the main operating device 13 individually transmits a load control state monitor signal to each terminal device 15 that is to be controlled after transmitting the simultaneous broadcast. Even if no spontaneous transmission is received from the terminal device 15 after control by broadcasting, the control state of the terminal device 15 can be grasped. In addition, the main operating device 13 manages the order in which the terminal devices 15 are monitored, and if a request for transmitting the next simultaneous broadcast occurs before the monitoring of all the terminal devices 15 is finished, after the simultaneous coaxial transmission is completed, Since monitoring is performed from the subsequent terminal device 15, - even if simultaneous broadcast control requests occur frequently and - spontaneous transmissions from the terminal device 15 do not come after simultaneous broadcast control,
The control state of the terminal device 15 can be understood on average.
以上のように本発明によれば、端末器は主操作装置から
の制御データが一斉回報制御信号であると判断すると、
自己の制御状態が変化しても主操作装置に対して通報を
行わないようにしたので、端末器を一括して制御する一
斉同報を行っても、伝送路上での信号の衝突が防止され
、効率の良い通信が可能となるという効果が得られる。As described above, according to the present invention, when the terminal determines that the control data from the main operating device is a broadcast control signal,
Even if the control status of the device itself changes, it will not notify the main control device, so even if you perform a simultaneous broadcast to control all terminal devices, collision of signals on the transmission path will be prevented. , the effect of enabling efficient communication can be obtained.
第１図はこの発明の一実施例に係る時分割多重伝送制御
方式において端末器の制御信号受信時の制御の流れを示
すフローチャート、第２図はこの実施例において主操作
装置が端末器に対する一斉同報制御並びに端末器が主操
作装置に対する状態確認信号を送信する際の制御の流れ
を示すフロチャート、第３図はこの実施例の制御装置の
構成を示すフローチャート、第４図は従来の時分割多重
伝送方式を用いた制御装置の回路構成図、第５図は第４
図中の端末器の動作を示すフローチャートである。
１・・・伝送線、１３・・・主操作装置、１５・・・端
末器。FIG. 1 is a flowchart showing the flow of control when a terminal device receives a control signal in a time division multiplex transmission control system according to an embodiment of the present invention, and FIG. A flowchart showing the flow of broadcast control and control when the terminal transmits a status confirmation signal to the main operating device. FIG. 3 is a flowchart showing the configuration of the control device of this embodiment, and FIG. 4 is a flowchart showing the configuration of the control device of this embodiment. A circuit configuration diagram of a control device using a division multiplex transmission method, Fig. 4
It is a flowchart which shows the operation|movement of the terminal device in a figure. 1... Transmission line, 13... Main operating device, 15... Terminal device.
Claims (1)
び制御データを含む伝送信号を伝送して、端末器に接続
された負荷を制御する時分割多重伝送制御装置において
、各端末器は、主操作装置からの個別制御信号を受信し
て自己の制御状態が変化した場合には、自己の変化した
状態を自発的に主操作装置へ通報すると共に、主操作装
置からの一斉同報制御信号を受信した場合は、自己の制
御状態が変化した場合においても、主操作装置への自発
的な通報を禁止し、主操作装置からの個別制御信号を受
信することにより自発的な通報の禁止を解除することを
特徴とする時分割多重伝送制御方式。In a time division multiplex transmission control device that transmits transmission signals including address signals and control data from the main operating device to the terminal device via a transmission line to control the load connected to the terminal device, each terminal device When the control state of the controller changes after receiving an individual control signal from the operating device, it spontaneously reports the changed state to the main operating device, and also sends a simultaneous broadcast control signal from the main operating device. If received, it will prohibit voluntary reporting to the main control device even if its own control status has changed, and will cancel the prohibition of voluntary notification by receiving an individual control signal from the main control device. A time division multiplex transmission control system characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2047891A JP2823082B2 (en) | 1990-02-28 | 1990-02-28 | Time division multiplex transmission control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2047891A JP2823082B2 (en) | 1990-02-28 | 1990-02-28 | Time division multiplex transmission control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03250934A true JPH03250934A (en) | 1991-11-08 |
| JP2823082B2 JP2823082B2 (en) | 1998-11-11 |
Family
ID=12788030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2047891A Expired - Lifetime JP2823082B2 (en) | 1990-02-28 | 1990-02-28 | Time division multiplex transmission control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2823082B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011132774A1 (en) | 2010-04-23 | 2011-10-27 | パナソニック電工株式会社 | Device control system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5913492A (en) * | 1982-07-15 | 1984-01-24 | Matsushita Electric Works Ltd | Remote controlling device |
| JPS6051397A (en) * | 1983-08-31 | 1985-03-22 | Matsushita Electric Works Ltd | Centralized controlling and monitoring system |
| JPS6198047A (en) * | 1984-10-18 | 1986-05-16 | Sanyo Electric Co Ltd | Data transmission system |
| JPS63105599A (en) * | 1986-10-22 | 1988-05-10 | Togami Electric Mfg Co Ltd | Transmission method in remote supervisory and controlling system |
| JPS63299597A (en) * | 1987-05-29 | 1988-12-07 | Nec Corp | Supervisory information transmitter |
| JPS6451794A (en) * | 1987-08-21 | 1989-02-28 | Fujitsu Ltd | State change processing method |
| JPH01284198A (en) * | 1988-05-11 | 1989-11-15 | Hitachi Ltd | Condition change data collection method |
-
1990
- 1990-02-28 JP JP2047891A patent/JP2823082B2/en not_active Expired - Lifetime
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5913492A (en) * | 1982-07-15 | 1984-01-24 | Matsushita Electric Works Ltd | Remote controlling device |
| JPS6051397A (en) * | 1983-08-31 | 1985-03-22 | Matsushita Electric Works Ltd | Centralized controlling and monitoring system |
| JPS6198047A (en) * | 1984-10-18 | 1986-05-16 | Sanyo Electric Co Ltd | Data transmission system |
| JPS63105599A (en) * | 1986-10-22 | 1988-05-10 | Togami Electric Mfg Co Ltd | Transmission method in remote supervisory and controlling system |
| JPS63299597A (en) * | 1987-05-29 | 1988-12-07 | Nec Corp | Supervisory information transmitter |
| JPS6451794A (en) * | 1987-08-21 | 1989-02-28 | Fujitsu Ltd | State change processing method |
| JPH01284198A (en) * | 1988-05-11 | 1989-11-15 | Hitachi Ltd | Condition change data collection method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011132774A1 (en) | 2010-04-23 | 2011-10-27 | パナソニック電工株式会社 | Device control system |
| EP2563039A4 (en) * | 2010-04-23 | 2013-10-02 | Panasonic Corp | DEVICE CONTROL SYSTEM |
| US8650333B2 (en) | 2010-04-23 | 2014-02-11 | Panasonic Corporation | Method and apparatus for device control system for load monitoring by performing transmission of state notification of devices individually |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2823082B2 (en) | 1998-11-11 |
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