JP3950039B2 - Power supply monitoring method for uninterruptible power supply in CATV system equipped with uninterruptible power supply - Google Patents

Power supply monitoring method for uninterruptible power supply in CATV system equipped with uninterruptible power supply Download PDF

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JP3950039B2
JP3950039B2 JP2002357184A JP2002357184A JP3950039B2 JP 3950039 B2 JP3950039 B2 JP 3950039B2 JP 2002357184 A JP2002357184 A JP 2002357184A JP 2002357184 A JP2002357184 A JP 2002357184A JP 3950039 B2 JP3950039 B2 JP 3950039B2
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Prior art keywords
power supply
uninterruptible power
uninterruptible
catv system
subscriber
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JP2003230231A (en
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彰 安藤
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ミハル通信株式会社
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Description

【０００１】
【産業上の利用分野】
本発明は無停電電源装置を備えたＣＡＴＶシステムにおいて、同システムの各種機器、例えば増幅器に電力を供給している電源が商用電源であるか無停電電源装置のバッテリー等の予備電源であるかを監視する無停電電源装置の電源監視方法に関するものである。
【０００２】
【従来の技術】
一般的なＣＡＴＶシステムでは図２のように商用電源（ＡＣ１００Ｖ）がダウン（停電）しても放送が中断されないように中継増幅器の電源に無停電電源装置Ａが備えられている。この無停電電源装置Ａの予備電源には通常はバッテリーが使用されており、商用電源がダウンすると自動的に予備電源に切り替り、それからの電力がインバーターにより交流に変換されて中継増幅器へ供給される。この無停電電源装置Ａには他の電気設備と同様に１次側に保安装置（ブレーカー）Ｂを設け、同保安装置Ｂを介して商用電源が供給されるようにしてある。
【０００３】
【発明が解決しようとする課題】
前記無停電電源装置Ａは商用電源の停電により予備電源に切り替っても、商用電源の停電が解消されれば自動的に予備電源から商用電源に戻るが、何らかの事情（例えば落雷によるサージ電流の混入）で１次側のブレーカーＢが落ちると停電が解消されても予備電源から商用電源に戻らず、予備電源から電力が供給され続ける。センターではＣＡＴＶシステムの無停電電源装置Ａに予備電源が供給されているのか、商用電源が供給されているのかを把握することができないため、そのまま放送が継続されると予備電源の電力が尽きたとき（バッテリーの放電時間：通常２〜４時間経過時）に突如として放送が停止してしまい、加入者に迷惑がかかるという問題があった。
【０００４】
本発明の目的は、前記問題を解消するため、ＣＡＴＶシステムの機器に無停電電源装置の予備電源から電力供給されていることをＣＡＴＶシステムのセンターで確認できるようにした無停電電源装置の電源監視方法を提供することにある。
【０００５】
【課題を解決するための手段】
本発明の無停電電源装置を備えたＣＡＴＶシステムにおける無停電電源装置の電源監視方法は図１に示すように、ＣＡＴＶシステムに、商用電源の供給停止時に機器に電力を供給する無停電電源装置１と、前記機器に無停電電源装置１のバッテリー等の予備電源から電源が供給されたか商用電源から電源が供給されたかを判別、監視する監視装置２が設けられ、監視装置２とその近くのＣＡＴＶシステム加入者宅３の受信機４との間に通信回線が配線され、監視装置２は前記機器に無停電電源装置１のバッテリー等の予備電源から電源が供給されると自動的に警報信号を発生し、同警報信号は前記通信回線を通して前記加入者宅３の受信機４に送信され、警報信号が当該受信機４で受信されると、その受信機４から加入者宅３に警報信号があったことを報知する警報が発生され、警報信号が受信された加入者宅３からＣＡＴＶシステムのセンターに警報信号が受信された旨が通報されると、通報を受けたセンターで無停電電源装置１の予備電源が使用されていることが確認できるようにしたものである。
【０００６】
【作用】
【０００７】
本発明の無停電電源装置を備えたＣＡＴＶシステムにおける無停電電源装置の電源監視方法では、商用電源から無停電電源装置１の予備電源に切り替ると、その切り替りを監視している監視装置２から警報信号が発生し、同警報信号が通信線により無停電電源装置１の近くのＣＡＴＶシステム加入者宅３に送信され、同警報信号が加入者宅３の受信機４で受信されるため、予めこの加入者に警報信号の受信があったらそれをＣＡＴＶシステムのセンター１０に知らせるよう依頼しておき、この加入者からセンター１０へ通報があれば同センター１０で無停電電源装置１の予備電源か使用されていることを確認することができる。このとき、商用電源に異常がなければ無停電電源装置の１次側に異常があることを知ることができるので作業員が無停電電源装置に出向いて装置の１次側の異常を確認し、その異常を直すことができる。また、この電源監視方法では警報信号の加入者宅３の受信機に通信線により送信しているので無線局の免許が不要であり実施が容易である。
【０００８】
【実施例１】
図１は本発明の無停電電源装置を備えたＣＡＴＶシステムにおける無停電電源装置の電源監視方法の一実施例を示したものであり、ＣＡＴＶのセンター１０から送出される放送信号が伝送路１１によって伝送され、同信号が伝送路１１に接続された増幅器１２で増幅されながら各ＣＡＴＶシステム加入者宅３へと送信されている。また、各増幅器１２は無停電電源装置１から電力供給を受けて作動している。
【０００９】
前記無停電電源装置１は商用電源（ＡＣ１００Ｖ）とバッテリー等の予備電源の２系統の電源を備え、同装置１に１次側のブレーカー１３から正常にＡＣ１００Ｖが供給されているとＡＣ１００Ｖをそのまま或は所望の電圧に降下して増幅器１２に電力供給し、１次側のブレーカー１３からの電力供給がストップすると自動的に予備電源の直流をインバーターで所望電圧の交流に変換して増幅器１１に電力供給する。
【００１０】
この無停電電源装置１の隣には同装置１の電源が商用電源であるか予備電源であるかを判別、監視する監視装置２が取り付けてあり、この監視装置２は無停電電源装置１の電源が商用電源から予備電源に切り替ると自動的に警報信号を発生するように構成されている。また、監視装置２と加入者宅３の受信機４とは有線の通信回線で結ばれていて、監視装置２から発生される警報信号がその有線（通信線）で無停電電源装置１の近くの加入者宅３の受信機４に伝送されて、その受信機４で受信されて、加入者宅４の人間に知らせるようにしてある。
【００１１】
受信機４では警報信号を受信するとそれをＬＥＤ等による光や、スピーカー等によるブザー音、音声合成装置音で加入者宅３の人に知らせることができるようになっている。なお、その場に人がいないという状況も想定して、前記光や音による警報は継続して或は断続的に続くようにし、人が戻ってきたときに警報信号の受信があったことを知ることができるようにしてある。加入者は警報信号の受信を知ったらすぐにＣＡＴＶのセンター１０に電話連絡して知らせる。そしてセンター１０の管理者は無停電電源装置１の電源が商用電源から予備電源に切り替った原因を検討すると共に、必要に応じてその無停電電源装置１に出向き、１次側のブレーカー１３が落ちている場合にはこれを正常復帰させ、その他、異常があるときは設備の点検・修理等を行う。
【００１２】
【００１３】
【発明の効果】
本発明の無停電電源装置を備えたＣＡＴＶシステムにおける無停電電源装置の電源監視方法では、商用電源から無停電電源装置１の予備電源に切り替ると、それが有線でＣＡＴＶシステム加入者宅３の受信機４に送信されて加入者に報じられるので、この加入者がセンター１０に電話などで連絡することにより、ＣＡＴＶシステムの機器への給電が無停電電源装置１の予備電源により行われていることをセンター１０で知ることができる。従って何らかの原因で予備電源から商用電源に自動復帰しなくても、予備電源が尽きる対策を実施することができ、放送停止に至る事故を未然に防ぐことができる。また、監視装置２と無停電電源装置１の近くの加入者宅３の受信機４を有線（通信線）で結ぶだけで警報情報を伝達することができるので実施が容易である。
【図面の簡単な説明】
【図１】 本発明の無停電電源装置を備えたＣＡＴＶシステムにおける無停電電源装置の電源監視方法の一実施例を示す概略図。
【図２】 従来の無停電電源を備えたＣＡＴＶシステムの一例を示す概略図。
【符号の説明】
１ 無停電電源装置
２ 監視装置
３ 加入者宅
４ 受信機[0001]
[Industrial application fields]
In the CATV system having an uninterruptible power supply, the present invention determines whether the power supply for supplying power to various devices of the system, for example, an amplifier, is a commercial power supply or a standby power supply such as a battery of the uninterruptible power supply. The present invention relates to a power monitoring method for an uninterruptible power supply to be monitored.
[0002]
[Prior art]
In a general CATV system, as shown in FIG. 2, an uninterruptible power supply A is provided for the power supply of the relay amplifier so that broadcasting is not interrupted even if the commercial power supply (AC 100V) is down (power failure). The uninterruptible power supply A usually uses a battery, and when the commercial power goes down, the battery is automatically switched to the standby power, and the electric power is converted to alternating current by the inverter and supplied to the relay amplifier. The The uninterruptible power supply A is provided with a safety device (breaker) B on the primary side like other electrical equipment, and commercial power is supplied via the safety device B.
[0003]
[Problems to be solved by the invention]
Even if the uninterruptible power supply A is switched to a standby power source due to a power failure of the commercial power source, the power source automatically returns from the standby power source to the commercial power source when the power failure of the commercial power source is resolved. If the primary breaker B falls due to mixing), even if the power failure is resolved, the standby power source does not return to the commercial power source, and power is continuously supplied from the standby power source. Since the center cannot grasp whether standby power is supplied to the uninterruptible power supply A of the CATV system or whether commercial power is supplied, the power of the standby power is exhausted when broadcasting is continued. At times (battery discharge time: usually 2 to 4 hours have elapsed), there was a problem that the broadcast suddenly stopped and the subscriber was inconvenienced.
[0004]
An object of the present invention is to solve the above-mentioned problem, and to monitor the power supply of the uninterruptible power supply so that it can be confirmed at the center of the CATV system that the CATV system equipment is supplied with power from the standby power supply of the uninterruptible power supply. It is to provide a method.
[0005]
[Means for Solving the Problems]
As shown in FIG. 1, the power monitoring method of the uninterruptible power supply in the CATV system equipped with the uninterruptible power supply according to the present invention is the uninterruptible power supply 1 that supplies power to the equipment when the commercial power supply is stopped. And a monitoring device 2 for determining and monitoring whether the device is supplied with power from a standby power source such as a battery of the uninterruptible power supply 1 or from a commercial power source, and the monitoring device 2 and a nearby CATV A communication line is wired between the receiver 4 of the system subscriber's home 3 and the monitoring device 2 automatically issues an alarm signal when power is supplied to the device from a standby power source such as a battery of the uninterruptible power supply 1. occurs, the alarm signal is transmitted to the receiver 4 of the subscriber's house 3 through the communication line, an alarm signal is received in the receiver 4, an alarm signal to the subscriber home 3 from the receiver 4 Ah When an alarm is generated to notify that the alarm signal is received from the subscriber's home 3 from which the alarm signal is received, to the center of the CATV system, the uninterruptible power supply 1 This makes it possible to confirm that the standby power supply is used.
[0006]
[Action]
[0007]
In the power supply monitoring method for the uninterruptible power supply in the CATV system equipped with the uninterruptible power supply of the present invention, when the commercial power supply is switched to the standby power supply of the uninterruptible power supply 1, the monitoring apparatus 2 that monitors the switching. Since the alarm signal is generated, the alarm signal is transmitted to the CATV system subscriber's home 3 near the uninterruptible power supply 1 through the communication line, and the alarm signal is received by the receiver 4 of the subscriber's home 3, If this subscriber has received a warning signal in advance, he / she is requested to notify the center 10 of the CATV system, and if there is a report from the subscriber to the center 10, the standby power supply of the uninterruptible power supply 1 is sent to the center 10 You can be sure that it is being used. At this time, if there is no abnormality in the commercial power supply, it is possible to know that there is an abnormality on the primary side of the uninterruptible power supply, so an operator goes to the uninterruptible power supply and checks the abnormality on the primary side of the apparatus, The abnormality can be corrected. Further, in this power supply monitoring method, since the alarm signal is transmitted to the receiver of the subscriber's home 3 through the communication line, a license for the radio station is not required and the implementation is easy.
[0008]
[Example 1]
FIG. 1 shows an embodiment of a power monitoring method for an uninterruptible power supply in a CATV system equipped with the uninterruptible power supply according to the present invention. A broadcast signal sent from a CATV center 10 is transmitted by a transmission line 11. The signal is transmitted and transmitted to each CATV system subscriber's home 3 while being amplified by the amplifier 12 connected to the transmission line 11. Each amplifier 12 is operated by receiving power from the uninterruptible power supply 1.
[0009]
The uninterruptible power supply 1 is provided with two power sources, ie, a commercial power supply (AC100V) and a backup power supply such as a battery. When the AC100V is normally supplied from the breaker 13 on the primary side, the AC100V is used as it is. Drops to a desired voltage and supplies power to the amplifier 12. When the power supply from the primary-side breaker 13 stops, the direct current of the standby power supply is automatically converted to an alternating current of the desired voltage by an inverter and power is supplied to the amplifier 11. Supply.
[0010]
Next to the uninterruptible power supply 1, a monitoring device 2 for determining and monitoring whether the power of the device 1 is a commercial power supply or a standby power supply is attached. An alarm signal is automatically generated when the power source is switched from a commercial power source to a standby power source. The monitoring device 2 and the receiver 4 of the subscriber's home 3 are connected by a wired communication line, and an alarm signal generated from the monitoring device 2 is near the uninterruptible power supply 1 by the wired (communication line). Is transmitted to the receiver 4 of the subscriber's home 3 and is received by the receiver 4 so as to notify the person of the subscriber's home 4.
[0011]
When the receiver 4 receives an alarm signal, it can notify the person at the subscriber's home 3 with light from an LED or the like, a buzzer sound from a speaker or the like, or a sound synthesizer sound. Assuming that there are no people on the spot, the warning by light or sound should be continued or intermittent, and that the warning signal was received when the person returned. So that you can know. As soon as the subscriber knows that the alarm signal has been received, the subscriber notifies the CATV center 10 by telephone. Then, the administrator of the center 10 examines the cause of the switch of the power supply of the uninterruptible power supply 1 from the commercial power supply to the standby power supply, and goes to the uninterruptible power supply 1 as necessary, and the primary breaker 13 If it has fallen, return it to normal, and if there is an abnormality, inspect and repair the equipment.
[0012]
[0013]
【The invention's effect】
In the power supply monitoring method for the uninterruptible power supply in the CATV system equipped with the uninterruptible power supply according to the present invention, when the commercial power supply is switched to the standby power supply of the uninterruptible power supply 1, it is wired and connected to the CATV system subscriber home 3. Since it is transmitted to the receiver 4 and reported to the subscriber, the subscriber contacts the center 10 by telephone or the like, so that power is supplied to the equipment of the CATV system by the standby power supply of the uninterruptible power supply 1. This can be known at the center 10. Therefore, even if the standby power source does not automatically return to the commercial power source for some reason, it is possible to take measures to exhaust the standby power source, and to prevent an accident leading to the stop of broadcasting. Moreover, since alarm information can be transmitted only by connecting the monitoring device 2 and the receiver 4 of the subscriber's home 3 near the uninterruptible power supply device 1 by wire (communication line), the implementation is easy.
[Brief description of the drawings]
FIG. 1 is a schematic diagram showing an embodiment of a power monitoring method for an uninterruptible power supply in a CATV system including the uninterruptible power supply of the present invention.
FIG. 2 is a schematic diagram showing an example of a CATV system equipped with a conventional uninterruptible power supply.
[Explanation of symbols]
1 Uninterruptible power supply 2 Monitoring device 3 Subscriber's house 4 Receiver

Claims (1)

ＣＡＴＶシステムに、商用電源の供給停止時に機器に電力を供給する無停電電源装置（１）と、前記機器に無停電電源装置（１）のバッテリー等の予備電源から電源が供給されたか商用電源から電源が供給されたかを判別、監視する監視装置（２）が設けられ、監視装置（２）とその近くのＣＡＴＶシステム加入者宅（３）の受信機（４）との間に通信回線が配線され、監視装置（２）は前記機器に無停電電源装置（１）のバッテリー等の予備電源から電源が供給されると自動的に警報信号を発生し、同警報信号は前記通信回線を通して前記加入者宅（３）の受信機（４）に送信され、警報信号が当該受信機（４）で受信されると、その受信機（４）から加入者宅（３）に警報信号があったことを報知する警報が発生され、警報信号が受信された加入者宅（３）からＣＡＴＶシステムのセンターに警報信号が受信された旨が通報されると、通報を受けたセンターで無停電電源装置（１）の予備電源が使用されていることが確認できるようにしたことを特徴とする無停電電源装置を備えたＣＡＴＶシステムにおける無停電電源装置の電源監視方法。An uninterruptible power supply (1) that supplies power to the device when the commercial power supply is stopped to the CATV system, and whether the power is supplied to the device from a standby power source such as a battery of the uninterruptible power supply (1) or from the commercial power supply A monitoring device (2) for determining and monitoring whether power is supplied is provided, and a communication line is wired between the monitoring device (2) and the receiver (4) of a nearby CATV system subscriber's home (3). The monitoring device (2) automatically generates an alarm signal when power is supplied to the device from a backup power source such as a battery of the uninterruptible power supply (1), and the alarm signal is transmitted through the communication line. sent to the premises (3) of the receiver (4), an alarm signal is received in the receiver (4), there is a warning signal to the subscriber's home (3) from the receiver (4) Is generated and an alarm signal is received. When the subscriber's home (3) notifies the CATV system center that an alarm signal has been received, it is confirmed that the standby power source of the uninterruptible power supply (1) is used at the center that received the notification. A power monitoring method for an uninterruptible power supply in a CATV system provided with an uninterruptible power supply.
JP2002357184A 2002-12-09 2002-12-09 Power supply monitoring method for uninterruptible power supply in CATV system equipped with uninterruptible power supply Expired - Fee Related JP3950039B2 (en)

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