JPH0470148A - Power line carrier communication control equipment - Google Patents

Power line carrier communication control equipment

Info

Publication number
JPH0470148A
JPH0470148A JP2181839A JP18183990A JPH0470148A JP H0470148 A JPH0470148 A JP H0470148A JP 2181839 A JP2181839 A JP 2181839A JP 18183990 A JP18183990 A JP 18183990A JP H0470148 A JPH0470148 A JP H0470148A
Authority
JP
Japan
Prior art keywords
control
power line
control signal
receiver
communication frame
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.)
Granted
Application number
JP2181839A
Other languages
Japanese (ja)
Other versions
JP3059970B2 (en
Inventor
Noriyuki Kushiro
紀之 久代
Kazuyuki Igarashi
和之 五十嵐
Ryoji Minagawa
良司 皆川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Mitsubishi Electric Lighting Corp
Original Assignee
Mitsubishi Electric Corp
Mitsubishi Electric Lighting Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp, Mitsubishi Electric Lighting Corp filed Critical Mitsubishi Electric Corp
Priority to JP2181839A priority Critical patent/JP3059970B2/en
Publication of JPH0470148A publication Critical patent/JPH0470148A/en
Application granted granted Critical
Publication of JP3059970B2 publication Critical patent/JP3059970B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Synchronisation In Digital Transmission Systems (AREA)
  • Selective Calling Equipment (AREA)

Abstract

PURPOSE:To prevent transmission disability and communication error from being generated by detecting a suspension period from a certain communication frame to the next communication frame so as to control a load during the suspension period of the communication frame. CONSTITUTION:A control signal is transmitted from a transmitter 2 for equipment control and received by a receiver 4 for equipment control connected through a commercial power line 3 to the transmitter 2 for equipment control. Then, a suspension period detecting means 7 provided at the receiver 4 for equipment control detects the suspension period from a certain communication frame to the next communication frame, and based on the signal from the suspension period detecting means 7, a control means 8 controls a load 5 during the suspension period of the communication frame. Thus, occurrence of transmission disability and communication error can be prevented.

Description

【発明の詳細な説明】 [産業上の利用分野] この発明は、制御信号を出力する機器制御用送信機と、
機器制御用送信機に商用電力線を介して接続された機器
制御用受信機と、機器制御用受信機に接続された負荷と
、を備え、機器制御用送信機から負荷制御データなどを
含む搬送高周波で変調された通信フレームを商用電力線
に重畳して搬送する電力線搬送通信制御装置に関する。
[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a device control transmitter that outputs a control signal;
A device control receiver is connected to the device control transmitter via a commercial power line, and a load is connected to the device control receiver. The present invention relates to a power line carrier communication control device that superimposes and transmits a communication frame modulated in a commercial power line onto a commercial power line.

[従来の技術] 第1図は、例えば特開昭56−86043号公報に記載
されている従来の電力線搬送通信制御装置を示すブロッ
ク図であり、電力線搬送通信制御装置(コ、)は、負荷
制御データなどを含む搬送高周波で変調された通信フレ
ームを商用電力線(3)に重畳して送出する機器制御用
送信機(2)を有しており、機器制御用送信機(2)に
は商用電力線(3)を介して複数の機器制御用受信機(
4)が接続されており(第2図7照)、機器制御用受信
機(4)にはそれぞれ負荷(5)が接続されている。
[Prior Art] FIG. 1 is a block diagram showing a conventional power line carrier communication control device described in, for example, Japanese Unexamined Patent Publication No. 56-86043. It has an equipment control transmitter (2) that superimposes and transmits a communication frame modulated with a carrier high frequency containing control data etc. onto a commercial power line (3). Multiple device control receivers (
4) is connected (see Fig. 2, 7), and a load (5) is connected to each device control receiver (4).

そして、機器制御用送信機(2)は、商用電源(6)を
整流して波形成形しかつ商用電源(6)の半サイクルに
対応する同期信号を出力する同期回路(7)を有してお
り、同期回路(7)には、同期信号に基づいて制御信号
を出力する伝送制御回路(8)が接続されている。
The equipment control transmitter (2) has a synchronization circuit (7) that rectifies and shapes the commercial power supply (6) into a waveform and outputs a synchronization signal corresponding to a half cycle of the commercial power supply (6). A transmission control circuit (8) that outputs a control signal based on a synchronization signal is connected to the synchronization circuit (7).

更に、伝送制御回路(8)には、送受信回路(9)およ
び操作部(10)が接続されており、送受信回路(9)
には、伝送制御回路(8)より出力される制御信号を電
力線(3)に重畳する結合回路(11)が接続されてい
る。
Further, the transmission control circuit (8) is connected to a transmission/reception circuit (9) and an operation section (10).
A coupling circuit (11) is connected to the power line (3) for superimposing a control signal output from the transmission control circuit (8) onto the power line (3).

また、機器制御用受信機(4)は、商用電源(6)を整
流して波形成形しかつ商用電源(6)の半す、イクルに
対応する同期信号を出力する同期回路(7)を有してお
り、同期間路(7)には、同期信号に基づいて制御信号
を出力する伝送制御回路(8)が接続されている。
The equipment control receiver (4) also includes a synchronization circuit (7) that rectifies and shapes the commercial power supply (6) into a waveform and outputs a synchronization signal corresponding to the half cycle of the commercial power supply (6). A transmission control circuit (8) that outputs a control signal based on a synchronization signal is connected to the synchronization path (7).

更に、伝送制御回路(8)には、送受信回路(9)が接
続されており、かつトランジスタ(12)を介L5て負
荷(5)への電力供給をON・OFFするリレー(13
)か接続されている。
Further, a transmission/reception circuit (9) is connected to the transmission control circuit (8), and a relay (13) is connected to the transmission control circuit (8) to turn on/off the power supply to the load (5) via the transistor (12) L5.
) or connected.

送受信回路(9)には、伝送制御回路(8)より出力さ
れる制御信号を電力線(′3)に重畳する結合回路(1
])が接続されている。
The transmitter/receiver circuit (9) includes a coupling circuit (1) that superimposes the control signal output from the transmission control circuit (8) onto the power line ('3).
]) is connected.

また、制御信号のフォーマットは、第3図に示すように
、優先コード(15) 、自己アドレス(16)、相手
アドレス(17)、制御コート(18)、システムフー
ド(1,9)、データ長(20)、データ(21,)、
フレームチエツクコード(22) 、ACK//NAK
 (23)からな−。
The format of the control signal is as shown in Figure 3: priority code (15), self address (16), partner address (17), control code (18), system hood (1, 9), data length. (20), data (21,),
Frame check code (22), ACK//NAK
From (23).

ており、ACK、/NAK (23)が送られてから次
のフォーマットまでの間には所定の休止期間が設けられ
ている。
A predetermined pause period is provided between the sending of ACK and /NAK (23) and the next format.

そして、制御信号は、第4図に示すように、商用電源(
6)の半ザイクル期間の後平部に搬送高周波が存在する
場合をデータ“コア′、前半部のみに搬送高周波が存在
する場合をデータ“0′としたものである。
As shown in Fig. 4, the control signal is transmitted from the commercial power source (
The case where the carrier high frequency exists in the flat part after the half-cycle period of 6) is defined as data "core", and the case where the carrier high frequency exists only in the first half is defined as data "0".

次に動作について説明する。Next, the operation will be explained.

機器制御用送信機(2)から機器制御用受信機No、1
 (4)に接続されている負荷(5)を制御されるため
の7レーム]の制御信号が電力線(3)に送出されると
、機器制御用受信機No。
From device control transmitter (2) to device control receiver No. 1
When a control signal for controlling the load (5) connected to (4) is sent to the power line (3), the device control receiver No.

1(4)の伝送制御回路(8)はフレームコの制御信号
の相手アドレス(17)から自己宛ての制御信号である
と判断し、この制御信号を受信する。
The transmission control circuit (8) of No. 1 (4) determines from the destination address (17) of the control signal of the frame code that the control signal is addressed to itself, and receives this control signal.

この際、機器制御用受信機No、  2 (4)の伝送
制御回路(8)はフレーム1の制御信号の相手アドレス
(17)から自己宛ての制御信号でないと判断し、この
制御信号を受信しない。
At this time, the transmission control circuit (8) of equipment control receiver No. 2 (4) determines from the destination address (17) of the control signal in frame 1 that the control signal is not addressed to itself, and does not receive this control signal. .

そして、機器制御用受信機No、  1 (4)の伝送
制御回路(8)はこの制御信号に基づき負荷(5)を制
御し、ACK (23)を返送する。
Then, the transmission control circuit (8) of device control receiver No. 1 (4) controls the load (5) based on this control signal and returns ACK (23).

同様に、機器制御用受信機No、  2 (4)に接続
されている負荷(5)を制御されるためのフレーム2の
制御信号が電力線(3)に送出されると、a!器副制御
用受信機No2 (4)の伝送制御回路(8)はフレー
ム2の制御信号の相手アドレス(17)から自己宛ての
制御信号であると判断し、この制御信号を受信する。
Similarly, when the control signal of frame 2 for controlling the load (5) connected to device control receiver No. 2 (4) is sent to the power line (3), a! The transmission control circuit (8) of the device sub-control receiver No. 2 (4) determines from the destination address (17) of the control signal in frame 2 that the control signal is addressed to itself, and receives this control signal.

この際、機器制御用受信機No、1 (4)の伝送制御
回路(8)はフレーム2の制御信号の相手アトし・ス(
17)から自己宛ての制御信号でないと判断1、この制
御信号を受信L2ない。
At this time, the transmission control circuit (8) of the equipment control receiver No. 1 (4) receives the control signal of frame 2 from the other party.
17), it is determined that the control signal is not addressed to itself (1), and this control signal is not received by L2.

そして、機器制御用受信機No、  2 (4)の伝送
制御回路(8)はこの制御信号に基づき負荷(5)を制
御1−5ACK (23)を返送する(第5図参照)。
Then, the transmission control circuit (8) of device control receiver No. 2 (4) controls the load (5) based on this control signal and sends back ACK (23) (see FIG. 5).

[発明が解決しようとする課題] 従来の電力線搬送通信制御装置は、以上のように構成さ
れているので、機器制御用受信機(4)か制御フレーム
を受信して、負荷制御を行う際に、電力線(3)のイン
ピーダンスか低下し、ノイズか発生(7、伝送特性が劣
化17、これにより伝送不能(信号伝達不能)、通信エ
ラーが発生し、システム制御の障害となっていた。
[Problems to be Solved by the Invention] Since the conventional power line carrier communication control device is configured as described above, when the device control receiver (4) receives a control frame and performs load control, , the impedance of the power line (3) decreased, and noise was generated (7), and the transmission characteristics deteriorated (17), which caused transmission failure (signal transmission failure) and communication errors, resulting in system control failure.

この発明は、上記のような課題を解消するためになされ
たもので、伝送不能(信号伝達不能)、通信エラーの発
生を防止し、システム制御の障害を引き起こさない電力
線搬送通信制御装置を得ることを目的とする。
This invention has been made to solve the above-mentioned problems, and provides a power line carrier communication control device that prevents transmission failure (signal transmission failure) and communication errors and does not cause system control failure. With the goal.

[課題を解決するための手段] この発明に係わる電力線搬送通信制御装置は、制御信号
を出力する機器制御用送信機ど、機器制御用送信機に商
用電力線を介して接続された機器制御用受信機と、機器
制御用受信機に接続された負荷と、機器制御用受信機に
設けられた通信フレームから次ぎの通信フレームまでの
休止期間を検出する休止期間検出手段と、機器制御用受
信機に設けられた休止期間検出手段からの18号により
通信フレームの休止期間に負荷を制御する制御手段と、
を備えたことを特徴とするものである。
[Means for Solving the Problems] A power line carrier communication control device according to the present invention includes a device control receiver connected to a device control transmitter via a commercial power line, such as a device control transmitter that outputs a control signal. a load connected to the equipment control receiver; an idle period detection means for detecting an idle period from one communication frame to the next communication frame provided in the equipment control receiver; A control means for controlling the load during the idle period of the communication frame according to No. 18 from the provided idle period detection means;
It is characterized by having the following.

[作用] この発明における電力線搬送通信制御装置は、機器制御
用送信機より制御信号を出力し、機器制御用送信機に商
用電力線を介して接続された機器制御用受信機により制
御信号を受信し、機器制御用受信機に設けられた休止期
間検出手段により通信フレームから次ぎの通信フレーム
までの休止期間を検出し、機器制御用受信機に設けられ
た制御手段により休止期間検出手段からの信号に基づき
通信フレームの休止期間に負荷を制御する。
[Function] The power line carrier communication control device of the present invention outputs a control signal from a device control transmitter, and receives the control signal by a device control receiver connected to the device control transmitter via a commercial power line. The idle period detection means provided in the device control receiver detects the idle period from one communication frame to the next communication frame, and the control means provided in the device control receiver detects the idle period in the signal from the idle period detection means. Based on this, the load is controlled during the idle period of communication frames.

[実施例) 以下、この発明の一実施例を図について説明する。[Example) An embodiment of the present invention will be described below with reference to the drawings.

電力線搬送通信制御装置(1)は、第1図に示すように
、負荷制御データなどを含む搬送高周波で変調された通
信フレームを商用電力線(3)に重畳して送出する機器
制御用送信機(2)を有(、でおり、機器制御用送信機
(2)には商用電力線(3)を介して複数の機器制御用
受信機(4)か接続されており(第2図参照)、機器制
御用受信機(4)にはそれぞれ負荷(5)が接続されて
いる。
As shown in FIG. 1, the power line carrier communication control device (1) includes an equipment control transmitter ( 2), and a plurality of equipment control receivers (4) are connected to the equipment control transmitter (2) via the commercial power line (3) (see Figure 2). A load (5) is connected to each control receiver (4).

そして、機器制御用送信機(2)は、商用を源(6)を
整流して波形成形しかつ商用電源(6)の半サイクルに
対応する同期信号を出力する同期回路(7)を有してお
り、同期回路(7)には、同期信号に基づいて制御信号
を出力する伝送制御回路(8)が接続されている。
The equipment control transmitter (2) has a synchronization circuit (7) that rectifies the commercial power source (6), shapes the waveform, and outputs a synchronization signal corresponding to a half cycle of the commercial power source (6). A transmission control circuit (8) that outputs a control signal based on a synchronization signal is connected to the synchronization circuit (7).

更に、伝送制御回路(8)には、送受信回路(9)およ
び操作部(10)が接続されており、送受信回路(9)
には、伝送制御回路(8)より出力される制御信号を電
力線(3)に重畳する結合回路(]1)が接続されてい
る。
Further, the transmission control circuit (8) is connected to a transmission/reception circuit (9) and an operation section (10).
is connected to a coupling circuit (]1) that superimposes a control signal output from the transmission control circuit (8) onto the power line (3).

また、機器制御用受信機(4)は、商用電源(6)を整
流して波形成形しかつ商用電源(6)の事サイクルに対
応する同期信号を出力すると共に休止期間には同期信号
を出力しない休止期間検出手段としての同期回路(7)
を有しており、同期回路(7)には、同期信号に基づい
て制御信号を出力する制御手段としての伝送制御回路(
8)が接続されている。
In addition, the equipment control receiver (4) rectifies the commercial power source (6), shapes the waveform, and outputs a synchronization signal corresponding to the cycle of the commercial power source (6), and also outputs a synchronization signal during the rest period. Synchronous circuit (7) as means for detecting idle periods
The synchronization circuit (7) includes a transmission control circuit (7) as a control means for outputting a control signal based on the synchronization signal.
8) is connected.

更に、伝送制御回路(8)には、送受信回路(9)が接
続されており、かつトランジスタ(12)を介して負荷
(5)への電力供給をON・OF Fするリレー(13
)が接続されている。
Furthermore, a transmission/reception circuit (9) is connected to the transmission control circuit (8), and a relay (13) is connected to the transmission control circuit (8) to turn on/off the power supply to the load (5) via the transistor (12).
) are connected.

送受信回路(9)には、伝送制御回路(8)より出力さ
れる制御信号を電力線(3)に重畳する結合回路(1]
)が接続されている。
The transmission/reception circuit (9) includes a coupling circuit (1) that superimposes a control signal output from the transmission control circuit (8) onto the power line (3).
) are connected.

また、制御信号のフォーマットは、第3図に示すように
、優先コード(15)、自己アドレス(16)、相手ア
ドレス(17)、制御コード(18)、システムコード
(1,9)、、データ長(20)、デ・−タ(21)、
フレームチェックコーード(22) 、ACK/NAK
 (23)からな−)ており、ACK/NAK (23
)が送られてから次のフォーマットまでの間には所定の
休止期間が設けられている。
The format of the control signal is as shown in Figure 3: priority code (15), self address (16), other party address (17), control code (18), system code (1, 9), data length (20), data (21),
Frame check code (22), ACK/NAK
(23) to) and ACK/NAK (23
) is sent and the next format is provided with a predetermined pause period.

そして、制御信号は、第4図に示すように、商用電源(
6)の半ザイクル期間の後半部に搬送高周波が存在する
場合をデータ“]゛、前半部のみに搬送高周波が存在す
る場合をデータ“O゛としたものである。
As shown in Fig. 4, the control signal is transmitted from the commercial power source (
The case where the carrier high frequency exists in the second half of the half-cycle period in 6) is defined as data "]", and the case where the carrier high frequency exists only in the first half is defined as data "O".

ついて、本実施例の作用を第6図のフローチャートに沿
って説明する。
The operation of this embodiment will now be explained with reference to the flowchart in FIG.

電源投入後、機器制御用受信機(4)の伝送制御回路(
8)は機器制御用送信機(2)から負荷制御要求の有無
を判断1.(ステップS1)、機器制御用送信機(2)
から負荷制御要求があると判断した場合、例えば機器制
御用送信機(2)がら機器制御用受信機No、  1 
(4)に接続されている負荷(5)を制御されるための
フレーム1の制御信号が電力線(3)に送出されると、
機器制御用受信機No、  1 (4)の伝送制御回路
(8)はフレーム1の制御信号の相手アドレス(17)
から自己宛ての制御信号であると判断し、この制御信号
を受信し、ACK (23)を返送する。
After turning on the power, the transmission control circuit (
8) determines whether there is a load control request from the device control transmitter (2).1. (Step S1), equipment control transmitter (2)
If it is determined that there is a load control request from the device control transmitter (2), the device control receiver No. 1
When the control signal of frame 1 for controlling the load (5) connected to (4) is sent to the power line (3),
The transmission control circuit (8) of device control receiver No. 1 (4) is the destination address (17) of the control signal of frame 1.
It determines that the control signal is addressed to itself, receives this control signal, and returns ACK (23).

この際、機器制御用受信機No、  2 (4)の伝送
制御回路(8)はフレーム1の制御信号の相手アドレス
(17)から自己宛ての制御信号でないと判断し、この
制御信号を受信しない。
At this time, the transmission control circuit (8) of equipment control receiver No. 2 (4) determines from the destination address (17) of the control signal in frame 1 that the control signal is not addressed to itself, and does not receive this control signal. .

そして、機器制御用受信機N011(4)の伝送制御回
路(8)は、同期回路(7)からの信号に基づき、休止
期間中か否か判断しくステップS2)、休止期間中であ
ると判断した場合に、リレー制御信号を出力してリレー
(13)をONさせる(ステップS3)。
Then, the transmission control circuit (8) of the equipment control receiver N011 (4) determines whether or not it is in the suspension period based on the signal from the synchronization circuit (7) (Step S2), and determines that it is in the suspension period. If so, a relay control signal is output to turn on the relay (13) (step S3).

そして、リレー(13)のONにより負荷(5)は動作
する。
Then, the load (5) operates by turning on the relay (13).

同様に、機器制御用受信機No、  2 (4)に接続
されている負荷(5)を制御されるためのフレーム2の
制御信号が電力線(3)に送出されると、機器制御用受
信機No、  2 (4)の伝送制御回路(8)はフレ
ーム2の制御信号の相手アドレス(17)から自己宛て
の制御信号であると判断し、この制御信号を受信すし、
ACK (23)を返送する(第5図参照)。
Similarly, when the control signal of frame 2 for controlling the load (5) connected to device control receiver No. 2 (4) is sent to the power line (3), the device control receiver No. No. 2 (4) The transmission control circuit (8) determines that the control signal is addressed to itself from the destination address (17) of the control signal in frame 2, and receives this control signal.
ACK (23) is returned (see Figure 5).

この際、機器制御用受信機No、1.(4)の伝送制御
回路(8)はフレーム2の制御信号の相手アドレス(1
7)から自己宛ての制御信号でないと判断し、この制御
信号を受信しない。
At this time, device control receiver No. 1. The transmission control circuit (8) of (4) is the destination address (1) of the control signal of frame 2.
7), it determines that the control signal is not addressed to itself and does not receive this control signal.

そして、機器制御用受信機No、  2 (4)の伝送
制御回路(8)はこの制御信号に基づき負荷(5)を制
御する。
Then, the transmission control circuit (8) of device control receiver No. 2 (4) controls the load (5) based on this control signal.

[発明の効果] 以上説明したように、この発明によれば、休止期間検出
手段により通信フレームから次ぎの通信フレームまでの
休止期間を検出して通信フレームの休止期間に負荷を制
御するように構成したので、負荷制御を行う際に、ノイ
ズが発生するのを防止して、伝送特性が劣化することを
防止でき、これにより伝送不能(信号伝達不能)、通信
エラーが発生することを防止できる。
[Effects of the Invention] As explained above, according to the present invention, the idle period detecting means detects the idle period from one communication frame to the next communication frame, and the load is controlled during the idle period of the communication frame. Therefore, when performing load control, it is possible to prevent noise from being generated and to prevent transmission characteristics from deteriorating, thereby preventing transmission failure (signal transmission failure) and communication errors from occurring.

【図面の簡単な説明】[Brief explanation of drawings]

第1図および第2図はこの発明の一実施例による電力線
搬送通信制御装置の構成を示すブロック図、第3図は制
御信号のフレームフォーマットを示す図、第4図は制御
信号のタイミングを示す図、第5図は通信シーケンスを
示す図、第6図はこの発明の作用を示すフローチャート
図である。 図において、(2)は機器制御用受信機、(3)は電力
線、(4)は機器制御用受信機、(5)は負荷、(7)
は同期回路、(8)は伝送制御回路である。 なお、図中、同一符号は同一または相当部分を示す。 代理人 弁理士 大 岩 増 雄 (外2名) 第 図 ψ 色イgシーγ〉ス 第 図
1 and 2 are block diagrams showing the configuration of a power line carrier communication control device according to an embodiment of the present invention, FIG. 3 is a diagram showing the frame format of the control signal, and FIG. 4 is a diagram showing the timing of the control signal. FIG. 5 is a diagram showing a communication sequence, and FIG. 6 is a flowchart showing the operation of the present invention. In the figure, (2) is a device control receiver, (3) is a power line, (4) is a device control receiver, (5) is a load, and (7) is a device control receiver.
is a synchronous circuit, and (8) is a transmission control circuit. In addition, in the figures, the same reference numerals indicate the same or corresponding parts. Agent: Masuo Oiwa, patent attorney (2 others)

Claims (1)

【特許請求の範囲】[Claims] 制御信号を出力する機器制御用送信機と、機器制御用送
信機に商用電力線を介して接続された機器制御用受信機
と、機器制御用受信機に接続された負荷と、を備え、機
器制御用送信機から負荷制御データなどを含む搬送高周
波で変調された通信フレームを商用電力線に重畳して搬
送する電力線搬送通信制御装置において、前記機器制御
用受信機に、通信フレームから次ぎ通信フレームまでの
休止期間を検出する休止期間検出手段と、休止期間検出
手段からの信号により通信フレームの休止期間に負荷を
制御する制御手段と、を備えたことを特徴とする電力線
搬送通信制御装置。
The device control device includes a device control transmitter that outputs a control signal, a device control receiver connected to the device control transmitter via a commercial power line, and a load connected to the device control receiver. In a power line carrier communication control device that transmits a communication frame modulated with a carrier high frequency containing load control data etc. from a commercial power line transmitter by superimposing it on a commercial power line, the device control receiver transmits information from one communication frame to the next communication frame. 1. A power line carrier communication control device comprising: an idle period detection means for detecting an idle period; and a control means for controlling a load during an idle period of a communication frame based on a signal from the idle period detection means.
JP2181839A 1990-07-10 1990-07-10 Power line communication control device Expired - Lifetime JP3059970B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2181839A JP3059970B2 (en) 1990-07-10 1990-07-10 Power line communication control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2181839A JP3059970B2 (en) 1990-07-10 1990-07-10 Power line communication control device

Publications (2)

Publication Number Publication Date
JPH0470148A true JPH0470148A (en) 1992-03-05
JP3059970B2 JP3059970B2 (en) 2000-07-04

Family

ID=16107717

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2181839A Expired - Lifetime JP3059970B2 (en) 1990-07-10 1990-07-10 Power line communication control device

Country Status (1)

Country Link
JP (1) JP3059970B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6679940B1 (en) 1999-09-14 2004-01-20 Daikin Industres, Ltd. Air cleaner and its ionizing unit
WO2009041625A1 (en) * 2007-09-26 2009-04-02 Daikin Industries, Ltd. Load driving method and load driving device
US8597707B2 (en) 2009-12-22 2013-12-03 Nissin Foods Holdings Co., Ltd. Instant noodles and method for producing the same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6679940B1 (en) 1999-09-14 2004-01-20 Daikin Industres, Ltd. Air cleaner and its ionizing unit
WO2009041625A1 (en) * 2007-09-26 2009-04-02 Daikin Industries, Ltd. Load driving method and load driving device
US8597707B2 (en) 2009-12-22 2013-12-03 Nissin Foods Holdings Co., Ltd. Instant noodles and method for producing the same

Also Published As

Publication number Publication date
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