JPH10242920A - Communication line fault monitoring system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically find the fault positions of a cable and a communication equipment by transmitting peculiar number information on the communication equipment between a controller and the plural communication equipment in non- communication. SOLUTION: Peculiar number information outputted from the controller is received in the information transmission control part 35 of a high-order communication equipment 3 and only the communication equipment 3 designated by peculiar number information is transmitted to the incoming line 22 of a communication line through a signal level correction amplifier 32. Transmitted response information is transmitted to the information transmission control circuit of a fault monitoring control part in the controller through the incoming line 22. On the other hand, the non- communication detection circuit 34 of the communication equipment 3 monitors the outgoing line 21 and the incoming line 22 of the communication line and outputs peculiar number information of a self-sation to the incoming line 22 through the signal level correction amplifier 32 at every prescribed time in non-communication. Outputted peculiar number information is transmitted to the information transmission control circuit of the fault monitoring controller of the controller through the incoming line 22.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は、通信システムのメ
タリック通信回線における障害監視方式に関するもので
ある。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for monitoring a failure in a metallic communication line of a communication system.

【０００２】[0002]

【従来の技術】従来、この種の技術としては、例えば、
図４に示す方式がある。図４において制御装置１に設け
た監視信号発生回路１３から出力される監視信号は、常
時加算増幅器１１を通して、通信回線の接続ケーブルの
下り回線２１に出力され、直列に接続された通信装置３
のレベル補正増幅器３１を通して、順次Ｎ番目の通信装
置３まで送られ、監視信号のみを通す帯域フィルタ４を
通して上り回線２２に送られ、Ｎ番目の通信装置３から
順次通信装置３を経由して制御装置１に戻る。制御装置
１は、戻ってきた監視信号を検知できなくなった時に障
害監視制御部１４で通信ケーブルの障害であることを表
示する。2. Description of the Related Art Conventionally, as this kind of technology, for example,
There is a method shown in FIG. In FIG. 4, a monitoring signal output from a monitoring signal generation circuit 13 provided in the control device 1 is always output to the downstream line 21 of the connection cable of the communication line through the addition amplifier 11, and the communication device 3 connected in series
Is transmitted to the Nth communication device 3 sequentially through the level correction amplifier 31, and is sent to the upstream line 22 through the bandpass filter 4 that passes only the monitor signal, and is controlled from the Nth communication device 3 through the communication device 3 sequentially. Return to the device 1. When the returned monitoring signal cannot be detected, the control device 1 causes the fault monitoring control unit 14 to indicate that the communication cable is faulty.

【０００３】[0003]

【発明が解決しようとする課題】前述の従来技術では、
監視信号断を検知した場合に、直列に接続された複数の
基地局間のどこの箇所のケーブル障害かわからず、ま
た、ケーブル障害と通信装置自体の障害との切り分けも
できず、障害発生後に通信試験等でどこの通信装置まで
正常に動作するかを確認後障害箇所を調査しなければ分
からないという欠点があった。本発明は、この欠点を除
去し、ケーブル及び通信装置の障害箇所が自動的に分か
るようにすることを目的とする。In the above-mentioned prior art,
When a monitoring signal loss is detected, it is not known where a cable fault has occurred between a plurality of base stations connected in series, nor can a cable fault be separated from a fault in the communication device itself. After confirming up to which communication device operates normally by a communication test or the like, there is a drawback that it is impossible to know unless a faulty part is investigated. It is an object of the present invention to eliminate this drawback and to enable automatic identification of faults in cables and communication devices.

【０００４】[0004]

【課題を解決するための手段】本発明は上記目的を達成
するため、無通信状態を検知し、無通信時に制御装置と
複数通信装置との間で、通信装置の固有番号情報の伝送
を行うと共に、通信装置障害時に、その通信装置をパス
し、下位の通信装置と情報伝送を行えるようにしたもの
である。SUMMARY OF THE INVENTION In order to achieve the above object, the present invention detects a non-communication state and transmits unique number information of a communication device between a control device and a plurality of communication devices when there is no communication. In addition, when a communication device fails, the communication device is passed and information can be transmitted to a lower communication device.

【０００５】[0005]

【発明の実施の形態】以下この発明の一実施例を図１、
図２、図３を参照して説明する。図１において、１は制
御装置、２１は通信回線の下り回線のケーブル、２２は
通信回線の上り回線のケーブル、３は通信装置である。
また、図２において、１１は加算増幅器、１２は障害監
視制御部で、図示されない情報伝送制御回路により、通
信装置３との間で通信装置３の固有番号情報の伝送を行
い、障害箇所を検出し障害箇所の表示を行う。図３にお
いて、３１，３２は通信装置３の信号レベル補正用増幅
器で、増幅器３２は伝送情報の加算も行う。３３は通信
装置３のパス回路で、通信装置の障害時パスライン側に
動作し、通信装置３をパスする。３４は無通信検知回路
で、通信回線の使用状態を監視する。３５は情報伝送制
御部で、制御装置１の障害監視制御部１２の図示されな
い情報伝送制御回路との間で、通信装置３の固有番号情
報の伝送を行う。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention is shown in FIG.
This will be described with reference to FIGS. In FIG. 1, reference numeral 1 denotes a control device, 21 denotes a communication line downlink cable, 22 denotes a communication line uplink cable, and 3 denotes a communication device.
In FIG. 2, reference numeral 11 denotes an addition amplifier, and reference numeral 12 denotes a fault monitoring control unit, which transmits a unique number information of the communication device 3 to the communication device 3 by an information transmission control circuit (not shown) to detect a fault location. And display the failure location. In FIG. 3, reference numerals 31 and 32 denote signal level correcting amplifiers of the communication device 3, and the amplifier 32 also adds transmission information. Reference numeral 33 denotes a path circuit of the communication device 3, which operates on the path line side when a failure occurs in the communication device and passes the communication device 3. Reference numeral 34 denotes a non-communication detecting circuit which monitors the use state of a communication line. An information transmission control unit 35 transmits the unique number information of the communication device 3 to and from an information transmission control circuit (not shown) of the fault monitoring control unit 12 of the control device 1.

【０００６】以下この実施例の動作について説明する。
制御装置１は、無通信時に障害監視制御部１２の図示さ
れない情報伝送制御回路により、通信装置３の１からＮ
の固有番号情報を一定時間毎に加算増幅器１１を通し
て、通信回線の上り回線２２に出力する。出力された固
有番号情報は、上位の通信装置３から順に下位の通信装
置３へ伝送され、通信装置３の情報伝送制御部３５で受
信し、固有番号情報で指定された通信装置３のみが、応
答情報を信号レベル補正増幅器３２を通して、通信回線
の上り回線２２に送出する。送出された応答情報は、上
り回線２２を通して制御装置１の障害監視制御部１２の
図示されない情報伝送制御回路に伝送される。一方、通
信装置３の無通信検知回路３４で通信回線の下り回線２
１、上り回線２２を監視し、無通信時に、一定時間毎に
自局の固有番号情報を信号レベル補正用増幅器３２を通
して上り回線２２に出力する。出力された固有番号情報
は、上り回線２２を通して制御装置１の障害監視制御装
置１２の図示されない情報伝送制御回路に伝送される。
制御装置１は、各通信装置３と固有番号情報の伝送を行
い、通信回線の障害を判定し障害時箇所を表示する。Hereinafter, the operation of this embodiment will be described.
The control device 1 uses the information transmission control circuit (not shown) of the failure monitoring control unit 12 during non-communication to control the communication devices 3 to 1 to N
Is output to the upstream line 22 of the communication line through the addition amplifier 11 at regular time intervals. The output unique number information is sequentially transmitted from the upper communication device 3 to the lower communication device 3, received by the information transmission control unit 35 of the communication device 3, and only the communication device 3 specified by the unique number information is transmitted. The response information is sent to the upstream line 22 of the communication line through the signal level correction amplifier 32. The transmitted response information is transmitted to an information transmission control circuit (not shown) of the failure monitoring control unit 12 of the control device 1 through the uplink line 22. On the other hand, the non-communication detection circuit 34 of the communication
1. Monitor the uplink 22 and output the unique number information of the own station to the uplink 22 through the signal level correction amplifier 32 at regular time intervals during non-communication. The output unique number information is transmitted to an information transmission control circuit (not shown) of the fault monitoring control device 12 of the control device 1 through the uplink 22.
The control device 1 transmits the unique number information to each of the communication devices 3, determines a failure in the communication line, and displays the location at the time of the failure.

【０００７】以上の動作により、制御装置１から出力さ
れる固有番号情報の応答情報だけが受信出来ない通信装
置３がある場合は、その通信装置３と一つ上位の通信装
置３との間の下り回線のケーブル障害であることが分か
り、通信装置３自身で出力する固有番号情報だけが受信
できない通信装置３がある場合は、その通信装置３と一
つ上位の通信装置３との間の上り回線のケーブル障害で
あることが分かり、固有番号情報の応答情報を受信でき
ず、同じ固有番号の通信装置３自身からの固有番号情報
も受信できない場合で、かつその通信装置３の下位の通
信装置３と固有番号情報の応答情報が受信出来る場合
は、固有番号情報の応答が出来ない通信装置３の障害で
あることが分かり、保守の効率化を図ることができる。According to the above operation, when there is a communication device 3 that cannot receive only the response information of the unique number information output from the control device 1, the communication device 3 between the communication device 3 and the next higher communication device 3 If it is determined that a cable failure has occurred in the downlink and there is a communication device 3 that cannot receive only the unique number information output by the communication device 3 itself, the upstream communication between the communication device 3 and the next higher communication device 3 When it is known that a cable failure has occurred in the line, the response information of the unique number information cannot be received, and the unique number information from the communication device 3 having the same unique number cannot be received, and the lower communication device of the communication device 3 If the response information of the communication device 3 and the response of the unique number information can be received, it is known that the communication device 3 cannot respond to the unique number information, and the efficiency of maintenance can be improved.

【０００８】[0008]

【発明の効果】以上説明したように本発明によれば、指
令所等に設置される制御装置で、情報伝送のできない通
信装置を自動的に検出でき、通信試験等を行なうことな
く、直列に接続された通信装置のどの基地局間のケーブ
ル障害か、どの基地局の障害かが分かり、かつ上り回
線、下り回線別に分かるため、保守の効率化を図ること
ができる。As described above, according to the present invention, a control device installed at a command center or the like can automatically detect a communication device that cannot transmit information, and can serially detect a communication device without performing a communication test or the like. Since it is possible to know which of the base stations of the connected communication device is the cable fault and which of the base stations is faulty, and to know for each of the uplink and the downlink, the maintenance efficiency can be improved.

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

【図１】本発明の一実施例の全体構成を示すブロック
図。FIG. 1 is a block diagram showing an overall configuration of an embodiment of the present invention.

【図２】本発明の一実施例における制御装置の構成を示
すブロック図。FIG. 2 is a block diagram showing a configuration of a control device according to one embodiment of the present invention.

【図３】本発明の一実施例における通信装置の構成を示
すブロック図。FIG. 3 is a block diagram illustrating a configuration of a communication device according to an embodiment of the present invention.

【図４】従来方式の構成を示すブロック図。FIG. 4 is a block diagram showing a configuration of a conventional system.

【符号の説明】[Explanation of symbols]

１：制御装置、 ３：通信装置、
１１：加算増幅器、 １２：障害監視
制御部、１３：監視信号発生回路、 １４：
信号検知回路、２１：通信回線の下り回線接続ケーブ
ル、２２：通信回線の上り回線接続ケーブル、３１，３
２：信号レベル補正用増幅器、３３：通信装置パス回
路、３４：無通信検知回路、 ３５：情報
伝送制御部。1: control device, 3: communication device,
11: addition amplifier, 12: fault monitoring control unit, 13: monitoring signal generation circuit, 14:
Signal detection circuit, 21: Downlink connection cable of communication line, 22: Uplink connection cable of communication line, 31, 3
2: amplifier for signal level correction, 33: communication device pass circuit, 34: non-communication detection circuit, 35: information transmission control unit.

Claims (2)

【特許請求の範囲】[Claims] 【請求項１】 直列に接続された複数の通信装置とで構
成される通信システムにおいて、 直列に接続される複数の通信装置に接続する制御装置の
障害監視制御部に、該通信装置との間で無通信時に一定
時間毎に通信装置の固有番号情報の伝送を行う情報伝送
制御回路を設け、該通信装置に無通信検知回路と、該制
御装置からの一定時間毎の固有番号情報に対する応答と
該通信装置自体で一定時間毎に自分の固有番号情報の伝
送を行う情報伝送制御回路とを設け、 該制御装置で該通信装置からの応答情報又は該通信装置
自体からの情報の受信が無いことを検出することによっ
て、下り回線、上り回線別に複数の該通信装置間のケー
ブルの障害箇所が分かるように構成したことを特徴とす
る通信回線障害監視方式。A communication system comprising a plurality of communication devices connected in series, wherein a fault monitoring control unit of a control device connected to the plurality of communication devices connected in series includes An information transmission control circuit for transmitting the unique number information of the communication device at regular intervals during non-communication is provided.The communication device has a no-communication detection circuit, and a response to the unique number information at regular intervals from the control device. An information transmission control circuit for transmitting its own unique number information at regular intervals by the communication device itself; and that the control device does not receive response information from the communication device or information from the communication device itself. A communication line fault monitoring system characterized in that a fault location of a cable between a plurality of the communication devices can be identified for each of a downlink line and an uplink line by detecting a fault. 【請求項２】 直列に接続された複数の通信装置と制御
装置とで構成される通信システムにおいて、 該通信装置に、電源故障等の障害時、該通信装置をパス
する回路を設け、制御装置とパスされた通信装置より下
位の通信装置との間で情報伝送を行うことによって、故
障した通信装置が分かりケーブル障害と通信装置障害と
を切り分けられるように構成したことを特徴とする通信
回線障害監視方式。2. A communication system comprising a plurality of communication devices connected in series and a control device, wherein the communication device is provided with a circuit for passing the communication device when a failure such as a power supply failure occurs. A communication line failure characterized by transmitting information between the communication device and a lower communication device than the passed communication device, thereby identifying the failed communication device and isolating the cable failure from the communication device failure. Monitoring method.