JP7009208B2 - Smart meter communication device - Google Patents

Smart meter communication device Download PDF

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JP7009208B2
JP7009208B2 JP2017253400A JP2017253400A JP7009208B2 JP 7009208 B2 JP7009208 B2 JP 7009208B2 JP 2017253400 A JP2017253400 A JP 2017253400A JP 2017253400 A JP2017253400 A JP 2017253400A JP 7009208 B2 JP7009208 B2 JP 7009208B2
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smart meter
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JP2019122063A (en
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和人 水野
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河村電器産業株式会社
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    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02B90/20—Smart grids as enabling technology in buildings sector
    • 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
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/12—Energy storage units, uninterruptible power supply [UPS] systems or standby or emergency generators, e.g. in the last power distribution stages
    • 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
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20—End-user application control systems
    • Y04S20/248—UPS systems or standby or emergency generators

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  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)
  • Stand-By Power Supply Arrangements (AREA)

Description

本発明は、スマートメータと通信して使用電力情報を入手し、各種電力管理機器に送信するスマートメータ通信装置に関する。 The present invention relates to a smart meter communication device that communicates with a smart meter to obtain power usage information and transmits it to various power management devices.

アナログ式の電力量計に替えて電力情報を送信する通信機能を備えたスマートメータの普及が進んでいる。一方、家庭で使用される家電機器においても通信機能を備えたものが普及しており、これら家電機器をＨＥＭＳコントローラによって制御して節電を計る構成が注目されている。
例えば、特許文献１では、ＨＥＭＳコントローラにスマートメータと通信する機能を設けて、必要な電力情報をスマートメータから入手した。 Smart meters equipped with a communication function that transmits power information instead of analog-type electricity meters are becoming widespread. On the other hand, home appliances having a communication function have become widespread, and attention is being paid to a configuration in which these home appliances are controlled by a HEMS controller to save power.
For example, in Patent Document 1, the HEMS controller is provided with a function of communicating with a smart meter, and necessary power information is obtained from the smart meter.

特開２０１４－７５９７８０号公報Japanese Unexamined Patent Publication No. 2014-759780

上記スマートメータと通信する従来のＨＥＭＳコントローラ等のスマートメータ通信装置は、停電が発生したら電源が供給されないため他の電気機器と同様に停止した。
一方で、近年の分電盤には感震リレーを備えたものがあり、感震リレーを備えた分電盤は、一定震度を超える大きさの地震が発生すると、感震リレーの制御で主幹ブレーカが遮断動作するよう構成されている。そのため、地震により商用電源が停止した場合に、主幹ブレーカも遮断動作する状態が発生する。
この場合、復電しても主幹ブレーカの遮断動作により電路が遮断されているため、復電に住人が気づかない状態が発生し、電力が供給されない状態が引き続き継続されることになる。これでは、住人が復電を待っている場合は迷惑な状態となる。 A conventional smart meter communication device such as a HEMS controller that communicates with the smart meter is stopped like other electric devices because power is not supplied when a power failure occurs.
On the other hand, some distribution boards in recent years are equipped with seismic relays, and distribution boards equipped with seismic relays are mainly controlled by seismic relays when an earthquake of a magnitude exceeding a certain seismic intensity occurs. The breaker is configured to shut off. Therefore, when the commercial power supply is stopped due to an earthquake, the main circuit breaker also shuts off.
In this case, even if the power is restored, the electric circuit is cut off by the shutoff operation of the main breaker, so that the resident does not notice the power restoration, and the state in which the power is not supplied continues. This would be annoying if the inhabitants were waiting for the power to be restored.

そこで、スマートメータ通信装置を停電時でも動作させるための非常用電源として電池を内蔵させることが考えられるが、スマートメータ通信装置は分電盤内或いはその近傍に設置されるものであるため、電池の管理が難しい問題があった。 Therefore, it is conceivable to incorporate a battery as an emergency power source for operating the smart meter communication device even in the event of a power failure. However, since the smart meter communication device is installed in or near the distribution board, the battery There was a problem that was difficult to manage.

本発明はこのような問題点に鑑み、非常用電源を内蔵させること無く停電時もスマートメータからの送信を待ち、送信を受けることで復電を認識するスマートメータ通信装置を提供することを目的としている。 In view of these problems, it is an object of the present invention to provide a smart meter communication device that waits for transmission from a smart meter even in the event of a power failure without incorporating an emergency power supply and recognizes power recovery by receiving transmission. It is supposed to be.

上記課題を解決する為に、請求項１の発明は、スマートメータと無線通信して使用電力情報を入手し、入手した使用電力情報を蓄積するメモリ、及び外部に送信する通信部を備えたスマートメータ通信装置であって、停電時でもスマートメータとの通信を可能とするために外部の連携機器から電源の供給を受けるためのバックアップ電源受電部を有し、連携機器が、通信線を介して通信部に接続されてスマートメータから送信された使用電力情報を表示するディスプレイと、停電時に使用される非常用電源として組み込まれた電池とを有して、電源線を介してバックアップ電源受電部に接続された表示装置であり、停電時には電源線を介して表示装置の電池から電源の供給を受けて、スマートメータへコマンドの送信を継続して返信を待つことを特徴とする。
この構成によれば、スマートメータ通信装置は停電時でもスマートメータからの返信を待ち、返信を受けたことで復電を認識して表示装置へ通知できる。よって、住人は主幹ブレーカが遮断状態にあっても復電を認識でき、遅滞なく必要な対策を取ることができる。また、連携機器としての表示装置は、人目につく操作し易い場所に設置されるため、非常用電源としての電池の管理がし易く、電池交換もし易い。 In order to solve the above problem, the invention of claim 1 is a smart provided with a memory that obtains power consumption information by wireless communication with a smart meter, stores the obtained power use information, and a communication unit that transmits the obtained power information to the outside. It is a meter communication device and has a backup power receiving unit for receiving power supply from an external linked device to enable communication with the smart meter even in the event of a power failure, and the linked device has a backup power receiving unit via a communication line. It has a display connected to the communication unit and displays the power consumption information transmitted from the smart meter, and a battery built in as an emergency power source used in the event of a power failure, and is connected to the backup power receiving unit via the power supply line. It is a connected display device, and is characterized by receiving power from the battery of the display device via a power line in the event of a power failure, continuously transmitting a command to a smart meter, and waiting for a reply.
According to this configuration, the smart meter communication device can wait for a reply from the smart meter even in the event of a power failure, recognize the recovery of power by receiving the reply, and notify the display device. Therefore, the resident can recognize the restoration of power even if the main breaker is cut off, and can take necessary measures without delay. Further, since the display device as a cooperative device is installed in a place that is easily visible and easy to operate, it is easy to manage the battery as an emergency power source and it is easy to replace the battery.

請求項２の発明は、請求項１に記載の構成において、表示装置から電源の供給を受けている停電状態では、スマートメータへ送信するコマンドの間隔は、通常より時間間隔の長い所定の時間間隔で実施する通信制御部を有することを特徴とする。
この構成によれば、スマートメータと通信する頻度が削減されることで、電池の長寿命化を計ることができる。 According to the second aspect of the present invention, in the configuration according to the first aspect, in a power failure state in which power is supplied from the display device, the interval of commands transmitted to the smart meter is a predetermined time interval longer than usual. It is characterized by having a communication control unit to be carried out in.
According to this configuration, the frequency of communication with the smart meter is reduced, so that the battery life can be extended.

請求項３の発明は、請求項２に記載の構成において、通信制御部は、停電モード動作でスマートメータと通信している状態で、スマートメータから返信を受けたら、復電したと判断して表示装置に復電を通知することを特徴とする。
この構成によれば、表示装置に復電が通知されるため、復電を表示させることができ、住人は復電を認識し易い。 According to the third aspect of the present invention, in the configuration according to the second aspect, when the communication control unit communicates with the smart meter in the power failure mode operation and receives a reply from the smart meter, it is determined that the power is restored. It is characterized by notifying the display device of the restoration of power.
According to this configuration, since the display device is notified of the power recovery, the power recovery can be displayed and the resident can easily recognize the power recovery.

本発明によれば、スマートメータ通信装置は停電時でもスマートメータからの返信を待ち、返信を受けたことで復電を認識して表示装置へ通知できる。よって、住人は主幹ブレーカが遮断状態にあっても復電を認識でき、遅滞なく必要な対策を取ることができる。また、連携機器としての表示装置は、人目につく操作し易い場所に設置されるため、非常用電源としての電池の管理がし易く、電池交換もし易い。 According to the present invention, the smart meter communication device can wait for a reply from the smart meter even in the event of a power failure, recognize the recovery of power by receiving the reply, and notify the display device. Therefore, the resident can recognize the restoration of power even if the main breaker is cut off, and can take necessary measures without delay. Further, since the display device as a cooperative device is installed in a place that is easily visible and easy to operate, it is easy to manage the battery as an emergency power source and it is easy to replace the battery.

本発明に係るスマートメータ通信装置の一例を示すブロック図である。It is a block diagram which shows an example of the smart meter communication apparatus which concerns on this invention. 表示装置のブロック図である。It is a block diagram of a display device.

以下、本発明を具体化した実施の形態を、図面を参照して詳細に説明する。図１は本発明に係るスマートメータ通信装置の一例を示すブロック図であり、スマートメータ通信装置１と通信するスマートメータ２、連携機器である表示装置３を合わせて示している。スマートメータ通信装置１は、スマートメータ２とＷｉ－ＳＵＮ通信を実施するスマートメータ通信部１１、表示装置３と通信する連携機器通信部１２、バスバー５に接続されてバスバー５から電源が供給される電源部１３、外部からバックアップ電源を受電するバックアップ電源受電部１４、スマートメータ通信装置１を制御する通信装置制御部１５等を備えている。 Hereinafter, embodiments that embody the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram showing an example of a smart meter communication device according to the present invention, and shows a smart meter 2 that communicates with the smart meter communication device 1 and a display device 3 that is a cooperative device. The smart meter communication device 1 is connected to a smart meter communication unit 11 that performs Wi-SUN communication with the smart meter 2, a cooperation device communication unit 12 that communicates with the display device 3, and a bus bar 5, and power is supplied from the bus bar 5. It includes a power supply unit 13, a backup power supply power receiving unit 14 that receives backup power from the outside, a communication device control unit 15 that controls the smart meter communication device 1, and the like.

バスバー５は、主幹ブレーカの２次側に配設された電路であり、分岐ブレーカを接続するために分電盤内に配設されている。そして、スマートメータ通信装置１は、分岐ブレーカと同様にこのバスバー５に接続されて電源が供給される。 The bus bar 5 is an electric circuit arranged on the secondary side of the main circuit breaker, and is arranged in the distribution board for connecting the branch breaker. Then, the smart meter communication device 1 is connected to the bus bar 5 in the same manner as the branch breaker, and power is supplied.

スマートメータ通信装置１は、通信装置制御部１５が内蔵するタイマ１５ｂをカウントさせて、例えば１分間隔でスマートメータ２と通信し、使用電力の情報（使用電力データ等）を入手し、入手したデータをメモリ１５ａに蓄積すると共に、連携機器通信部１２を介して表示装置３に出力する。 The smart meter communication device 1 counts a timer 15b built in the communication device control unit 15 and communicates with the smart meter 2 at intervals of, for example, one minute to obtain information on power consumption (power usage data, etc.). The data is stored in the memory 15a and output to the display device 3 via the communication device communication unit 12.

図２は表示装置３のブロック図を示している。図２に示すように表示装置３は、ＬＣＤから成るディスプレイ３１、ディスプレイ３１の表示の切り替え等を実施する操作ボタン３２、非常用電源としての電池３３、通常は商用電源４に接続されて停電時のみ電源を電池３３に切り替える電源部３４、警報音やメッセージを報音するスピーカ３５、メッセージ音声等を生成する音声合成部３６、表示装置３を制御するＭＣＵから成る表示装置制御部３７、スマートメータ通信装置１と通信するシリアル通信部３８、スマートメータ通信装置１に電源を供給する送電部３９等を備えている。
表示装置３は、信号線Ｌ１と電源線Ｌ２とでスマートメータ通信装置１に接続されている。 FIG. 2 shows a block diagram of the display device 3. As shown in FIG. 2, the display device 3 is connected to a display 31 composed of an LCD, an operation button 32 for switching the display of the display 31, a battery 33 as an emergency power source, and usually a commercial power source 4, and during a power failure. A power supply unit 34 that switches the power supply to the battery 33, a speaker 35 that sounds an alarm sound or a message, a voice synthesis unit 36 that generates a message sound, a display device control unit 37 consisting of an MCU that controls the display device 3, and a smart meter. It includes a serial communication unit 38 that communicates with the communication device 1, a power transmission unit 39 that supplies power to the smart meter communication device 1, and the like.
The display device 3 is connected to the smart meter communication device 1 by a signal line L1 and a power supply line L2.

上記の如く表示装置３が接続されているスマートメータ通信装置１の停電時の動作は、以下のようである。尚、地震発生を受けて商用電源４である電力会社側の電気が停止し、主幹ブレーカも遮断動作した場合を説明する。
この状態では、主幹ブレーカにより電路が遮断されているため、復電してもバスバー５は充電されず、家庭内の電気機器に電源は供給されない。そのため、電気機器を介しては復電したことを把握できない。
ただし、停電発生を検知した表示装置制御部３７は、電池３３を電源部３４に接続して送電部３９からスマートメータ通信装置１に電源の供給が開始される。また、表示装置３自身も、電池３３によりシリアル通信部３８、表示装置制御部３７の機能は維持される。 The operation of the smart meter communication device 1 to which the display device 3 is connected as described above at the time of a power failure is as follows. The case where the electricity of the electric power company, which is the commercial power source 4, is stopped due to the occurrence of the earthquake, and the main breaker is also shut off will be described.
In this state, since the electric circuit is cut off by the main breaker, the bus bar 5 is not charged even if the electric power is restored, and power is not supplied to the electric appliances in the home. Therefore, it is not possible to know that the power has been restored via the electrical equipment.
However, the display device control unit 37 that has detected the occurrence of a power failure connects the battery 33 to the power supply unit 34, and the power transmission unit 39 starts supplying power to the smart meter communication device 1. Further, in the display device 3 itself, the functions of the serial communication unit 38 and the display device control unit 37 are maintained by the battery 33.

表示装置３からバックアップ電源受電部１４を介して電源の供給が開始された電源部１３は、通信装置制御部１５を起動する。
起動した通信装置制御部１５は、外部の非常用電源により起動されたことを認識し、停電モードでの動作を開始する。停電モードでは、スマートメータ２と通信するためのコマンドの送信を、例えば１０分等通常より長い所定の間隔で実施し、この間隔でのコマンド送信が復電して返信があるまで継続される。尚、停電モードでは各種表示を行うＬＥＤ（表示せず）は発光を停止する。 The power supply unit 13 whose power supply is started from the display device 3 via the backup power supply power receiving unit 14 activates the communication device control unit 15.
The activated communication device control unit 15 recognizes that it has been activated by an external emergency power supply, and starts operation in the power failure mode. In the power failure mode, the command for communicating with the smart meter 2 is transmitted at a predetermined interval longer than usual, for example, 10 minutes, and the command transmission at this interval is continued until the power is restored and a reply is received. In the power failure mode, the LEDs (not displayed) that perform various displays stop emitting light.

その後、電力会社側の電気が復電すると、スマートメータ２が起動して、コマンドを送信し続けているスマートメータ通信装置１に対して返信信号を出力して通信が再開される。
こうして、スマートメータ２と通信を再開したスマートメータ通信装置１は、復電したことを認識して表示装置３に復電信号を送信する。復電信号を受信した表示装置３は、表示装置制御部３７の制御により、ディスプレイ３１が起動されて復電した旨がディスプレイ３１に表示され、スピーカ３５にて復電の音声案内が行われる。
尚、その後主幹ブレーカのオン操作が成されれば、バスバー５が充電されて表示装置３に商用電源が供給されて通常動作に復帰する。 After that, when the electric power of the electric power company is restored, the smart meter 2 is activated, a reply signal is output to the smart meter communication device 1 that continues to transmit commands, and communication is resumed.
In this way, the smart meter communication device 1 that has resumed communication with the smart meter 2 recognizes that the power has been restored and transmits a restoration signal to the display device 3. The display device 3 that has received the power recovery signal is controlled by the display device control unit 37 to display on the display 31 that the display 31 has been activated and the power has been restored, and the speaker 35 provides voice guidance for the power recovery.
After that, when the main breaker is turned on, the bus bar 5 is charged and the display device 3 is supplied with commercial power to return to normal operation.

このように、スマートメータ通信装置１は停電時でもスマートメータ２からの返信を待ち、返信を受けたことで復電を認識して表示装置３へ通知できる。よって、住人は主幹ブレーカが遮断状態にあっても復電を認識でき、遅滞なく必要な対策を取ることができる。
また、表示装置３は、人目につく操作し易い場所に設置されるため、非常用電源としての電池の管理がし易く、電池交換もし易い。
更に、停電時のスマートメータ通信装置１の動作は、スマートメータ２と通信する頻度が通常より削減されるため、電池３３の長寿命化を計ることができる。
加えて、表示装置３に復電が通知されるため、復電を表示させることができ、住人は復電を認識し易い。 In this way, the smart meter communication device 1 can wait for a reply from the smart meter 2 even in the event of a power failure, recognize the recovery of power by receiving the reply, and notify the display device 3. Therefore, the resident can recognize the restoration of power even if the main breaker is cut off, and can take necessary measures without delay.
Further, since the display device 3 is installed in a place that is easily visible and easy to operate, it is easy to manage the battery as an emergency power source, and it is easy to replace the battery.
Further, in the operation of the smart meter communication device 1 at the time of a power failure, the frequency of communication with the smart meter 2 is reduced more than usual, so that the life of the battery 33 can be extended.
In addition, since the display device 3 is notified of the power recovery, the power recovery can be displayed, and the resident can easily recognize the power recovery.

尚、上記実施形態では、主幹ブレーカの遮断動作を伴う停電の場合の動作を説明したが、地震を伴わず商用電電が停止するだけで主幹ブレーカはオン状態を維持している場合は、復電するとバスバー５をはじめ分岐電路にも電源が供給されるため、接続された電気機器の起動で復電を容易に把握できる。 In the above embodiment, the operation in the case of a power failure accompanied by the shutoff operation of the main breaker has been described. Then, since power is supplied to the branch electric circuit including the bus bar 5, it is possible to easily grasp the power recovery by starting the connected electric device.

１・・スマートメータ通信装置、２・・スマートメータ、３・・表示装置（連携機器）、１１・・スマートメータ通信部、１２・・連携機器通信部（通信部）、１３・・電源部、１４・・バックアップ電源受電部、１５・・通信装置制御部（通信制御部）、１５ａ・・メモリ、１５ｂ・・タイマ、３１・・ディスプレイ、３３・・電池、３９・・送電部、Ｌ１・・通信線、Ｌ２・・電源線。 1 ... Smart meter communication device, 2 ... Smart meter, 3 ... Display device (cooperative device), 11 ... Smart meter communication unit, 12 ... Cooperative device communication unit (communication unit), 13 ... Power supply unit, 14 ... Backup power receiving unit, 15 ... Communication device control unit (communication control unit), 15a ... Memory, 15b ... Timer, 31 ... Display, 33 ... Battery, 39 ... Transmission unit, L1 ... Communication line, L2 ... Power line.

Claims (3)

スマートメータと無線通信して使用電力情報を入手し、入手した使用電力情報を蓄積するメモリ、及び外部に送信する通信部を備えたスマートメータ通信装置であって、
停電時でも前記スマートメータとの通信を可能とするために外部の連携機器から電源の供給を受けるためのバックアップ電源受電部を有し、
前記連携機器が、通信線を介して前記通信部に接続されて前記スマートメータから送信された使用電力情報を表示するディスプレイと、停電時に使用される非常用電源として組み込まれた電池とを有して、電源線を介して前記バックアップ電源受電部に接続された表示装置であり、
停電時には前記電源線を介して前記表示装置の電池から電源の供給を受けて、前記スマートメータへコマンドの送信を継続して返信を待つことを特徴とするスマートメータ通信装置。 It is a smart meter communication device equipped with a memory that wirelessly communicates with a smart meter to obtain power usage information and stores the obtained power usage information, and a communication unit that transmits the obtained power information to the outside.
It has a backup power receiving unit for receiving power from an external linked device to enable communication with the smart meter even during a power outage.
The linked device has a display connected to the communication unit via a communication line and displaying power usage information transmitted from the smart meter, and a battery incorporated as an emergency power source used in the event of a power failure. It is a display device connected to the backup power receiving unit via a power line.
A smart meter communication device characterized in that, in the event of a power failure, power is supplied from the battery of the display device via the power line, the command is continuously transmitted to the smart meter, and a reply is awaited. 前記スマートメータとの通信を制御する通信制御部は、前記表示装置から電源の供給を受けている停電状態では、前記スマートメータへ送信するコマンドの間隔を通常より時間間隔の長い所定の時間間隔で実施する停電モード動作を実施することを特徴とする請求項１記載のスマートメータ通信装置。 The communication control unit that controls communication with the smart meter sets the interval of commands to be transmitted to the smart meter at a predetermined time interval longer than usual in a power failure state in which power is supplied from the display device. The smart meter communication device according to claim 1, wherein the power failure mode operation to be performed is performed. 前記通信制御部は、前記停電モード動作で前記スマートメータと通信している状態で、前記スマートメータから返信を受けたら、復電したと判断して前記表示装置に復電を通知することを特徴とする請求項２記載のスマートメータ通信装置。 The communication control unit is characterized in that when it receives a reply from the smart meter while communicating with the smart meter in the power failure mode operation, it determines that the power has been restored and notifies the display device of the restoration. 2. The smart meter communication device according to claim 2.
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