JP2019122063A - Smart meter communication device - Google Patents

Smart meter communication device Download PDF

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JP2019122063A
JP2019122063A JP2017253400A JP2017253400A JP2019122063A JP 2019122063 A JP2019122063 A JP 2019122063A JP 2017253400 A JP2017253400 A JP 2017253400A JP 2017253400 A JP2017253400 A JP 2017253400A JP 2019122063 A JP2019122063 A JP 2019122063A
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power
smart meter
communication
display device
power failure
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JP7009208B2 (en
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和人 水野
Kazuto Mizuno
和人 水野
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Kawamura Electric Inc
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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)

Abstract

To provide a smart meter communication device that incorporates no emergency supply and recognizes a power recovery by waiting for transmission and receiving the transmission from a smart meter even when a power failure occurs.SOLUTION: A smart meter communication device includes a smart meter communication portion 11 that wirelessly communicates with a smart meter 2 to obtain power usage information; a cooperative device communication portion 12 for transmitting power usage information to a display device 3; and a back-up power reception portion 14 for receiving a supply of power source from the display device 3 at the time of a power failure. The smart meter communication device is connected with the display device, through a communication line L1 and a power supply line L2. The display device 3 incorporates a battery 33 as an emergency power supply in addition to a display 31 for displaying the power usage information transmitted from the smart meter 2.SELECTED DRAWING: Figure 1

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。 The spread of smart meters having a communication function of transmitting power information in place of analog power meters has progressed. On the other hand, home appliances having a communication function are also widely used in home appliances, and a configuration in which these home appliances are controlled by an HEMS controller to save power has attracted attention.
For example, in Patent Document 1, the HEMS controller is provided with a function to communicate with a smart meter, and necessary power information is obtained from the smart meter.

特開２０１４−７５９７８０号公報JP, 2014-759780, A

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 the HEMS controller that communicates with the smart meter is stopped in the same manner as other electric devices because power is not supplied when a power failure occurs.
On the other hand, there are some distribution boards equipped with seismic relays in recent years, and the distribution boards equipped with seismic relays are main part in controlling the seismic relays when an earthquake with a size exceeding a certain seismic intensity occurs. The breaker is configured to shut off. Therefore, when the commercial power supply stops due to an earthquake, a state occurs in which the master breaker also operates to shut off.
In this case, since the electric path is shut off by the shutoff operation of the main breaker even when the power is restored, a state where the resident is not aware of the power restoration occurs, and the state where the power is not supplied continues. In this case, when the resident is waiting for the restoration of power, it becomes an annoyance state.

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 supply for operating the smart meter communication device even at the time of a power failure, but since the smart meter communication device is installed in or near the distribution board There was a problem that management of was difficult.

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 such problems, the present invention aims to provide a smart meter communication device that recognizes a power failure by waiting for transmission from the smart meter even at the time of a power failure without incorporating an emergency power supply. And

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 problems, the invention according to claim 1 is a smart having a memory for wirelessly communicating with a smart meter to obtain power usage information and storing the obtained power usage information, and a communication unit for transmitting to the outside. The meter communication device includes a backup power reception unit for receiving power supply from an external cooperation device to enable communication with the smart meter even in the event of a power failure, and the cooperation device is connected via the communication line. A display connected to the communication unit to display the used power information transmitted from the smart meter, and a battery incorporated as an emergency power supply used at the time of a power failure are provided to the backup power reception unit via the power supply line In the event of a power failure, the display device is connected and receives power from the battery of the display device via the power supply line, and continues sending commands to the smart meter and waits for a reply. The features.
According to this configuration, the smart meter communication device can wait for a reply from the smart meter even at the time of a power failure, and can recognize the power recovery by receiving the reply and notify the display device. Therefore, the resident can recognize the power recovery even if the master breaker is in the shutoff state, and can take necessary measures without delay. In addition, since the display device as the linked device is installed in a place that can be easily noticed and operated, it is easy to manage the battery as the emergency power supply, 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, a command transmission interval to the smart meter is a predetermined time interval longer than usual. And a communication control unit implemented by
According to this configuration, it is possible to extend the life of the battery by reducing the frequency of communication with the smart meter.

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, the communication control unit determines that power has been restored when it receives a reply from the smart meter while communicating with the smart meter in the power failure mode operation. It is characterized in that the display device is notified of power recovery.
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 at the time of a power failure, and can recognize the power recovery by receiving the reply and notify the display device. Therefore, the resident can recognize the power recovery even if the master breaker is in the shutoff state, and can take necessary measures without delay. In addition, since the display device as the linked device is installed in a place that can be easily noticed and operated, it is easy to manage the battery as the emergency power supply, 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 showing an example of a smart meter communications device concerning the present invention. 表示装置のブロック図である。It is a block diagram of a display.

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 embodying 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 also shows a smart meter 2 communicating with the smart meter communication device 1 and a display device 3 which is a linked device. The smart meter communication device 1 is connected to the smart meter communication unit 11 that performs Wi-SUN communication with the smart meter 2, the linked device communication unit 12 that communicates with the display device 3, and the bus bar 5. A power supply unit 13, a backup power reception unit 14 that receives backup power from the outside, and a communication device control unit 15 that controls the smart meter communication device 1 are provided.

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 path disposed on the secondary side of the main breaker, and disposed in the distribution board to connect 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 supplied with power.

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 the timer 15 b built in the communication device control unit 15 and communicates with the smart meter 2 at one minute intervals, for example, to obtain and acquire information on power usage (power usage data etc.) The data is stored in the memory 15 a and is output to the display device 3 via the linked 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, etc., a battery 33 as an emergency power supply, and usually a commercial power supply 4 Only the power supply unit 34 switches the power supply to the battery 33, the speaker 35 sounds an alarm sound and a message, the voice synthesis unit 36 generates a message voice and the like, the display control unit 37 consisting of an MCU controlling the display 3 A serial communication unit 38 that communicates with the communication device 1 and a power transmission unit 39 that supplies power to the smart meter communication device 1 are provided.
The display device 3 is connected to the smart meter communication device 1 by the signal line L1 and the 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 at the time of a power failure of the smart meter communication device 1 to which the display device 3 is connected as described above is as follows. In addition, the case where electricity of the electric power company side which is the commercial power supply 4 stops in response to the occurrence of an earthquake, and the master breaker also operates to shut off will be described.
In this state, since the electric path is shut off by the master breaker, the bus bar 5 is not charged even when the power returns, and power is not supplied to the electric devices in the home. Therefore, it is not possible to know that the power has been restored via the electrical device.
However, the display device control unit 37 that has detected the occurrence of the 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, also 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 supply of power is started from the display device 3 through the backup power reception unit 14 starts the communication device control unit 15.
The started communication device control unit 15 recognizes that it has been started by the external emergency power supply, and starts operation in the power failure mode. In the power failure mode, transmission of a command for communicating with the smart meter 2 is performed at a predetermined interval longer than normal, for example, 10 minutes, and command transmission at this interval is continued until power is returned and a reply is received. In the power failure mode, the LEDs (not displayed) for performing various displays stop light emission.

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。 Thereafter, when the electricity at the power company side is recovered, the smart meter 2 is activated, and a reply signal is output to the smart meter communication device 1 which continues to transmit the command, and the communication is resumed.
Thus, the smart meter communication device 1 having resumed communication with the smart meter 2 recognizes that the power recovery has occurred, and transmits a power recovery signal to the display device 3. Under the control of the display device control unit 37, the display device 3 that has received the power recovery signal displays on the display 31 that the display 31 is activated and power is restored, and voice guidance of power recovery is performed by the speaker 35.
After that, when the master breaker is turned on, the bus bar 5 is charged, the commercial power is supplied to the display device 3, and the normal operation is restored.

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。 As described above, the smart meter communication device 1 can wait for a reply from the smart meter 2 even when a power failure occurs, and can recognize the power recovery and notify the display device 3 by receiving the reply. Therefore, the resident can recognize the power recovery even if the master breaker is in the shutoff state, and can take necessary measures without delay.
In addition, since the display device 3 is installed in a place that can be easily noticed and operated, it is easy to manage the battery as an emergency power supply, and it is easy to replace the battery.
Furthermore, the operation of the smart meter communication device 1 at the time of a power failure can reduce the frequency of communicating with the smart meter 2 than usual, so that the life of the battery 33 can be extended.
In addition, since power recovery is notified to the display device 3, power recovery can be displayed, and the resident can easily recognize 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 involving the shutoff operation of the master breaker has been described. However, when the master breaker is maintained in the ON state only by stopping the commercial electric power without an earthquake Then, power is supplied also to the bus bar 5 and the branch electric path, so that power recovery can be easily grasped by activation of 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 (cooperation device), 11 · Smart meter communication portion, 12 · · Cooperation device communication portion (communication portion), 13 · power supply portion 14 · · · backup power receiving unit 15, · · · communication device control unit (communication control unit), 15a · · · memory 15b · · · · · · · · · · · · · · · · · · · · · · · · · · · · power transmission unit, L1 · · ·. Communication line, L2 · · Power supply 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。 A smart meter communication apparatus comprising: a memory for wirelessly communicating with a smart meter to obtain power usage information and storing the obtained power usage information; and a communication unit for transmitting the information to the outside,
In order to enable communication with the smart meter even in the event of a power failure, it has a backup power reception unit for receiving power supply from an external linked device,
The linked device has a display connected to the communication unit via a communication line to display power usage information transmitted from the smart meter, and a battery incorporated as an emergency power source used at the time of a power failure A display device connected to the backup power reception unit via a power supply line,
At the time of a power failure, power is supplied from the battery of the display device through the power supply line, and transmission of a command to the smart meter is continued to wait for a reply. 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。   In a power failure state in which power is supplied from the display device, a communication control unit that controls communication with the smart meter sets an interval of a command to be transmitted to the smart meter at a predetermined time interval longer than usual. 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。   When the communication control unit receives a reply from the smart meter while communicating with the smart meter in the power failure mode operation, the communication control unit determines that the power is restored and notifies the display device of the power return. The smart meter communication device according to claim 2.
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