JPS63133781A - Monitor system - Google Patents
Monitor systemInfo
- Publication number
- JPS63133781A JPS63133781A JP61279647A JP27964786A JPS63133781A JP S63133781 A JPS63133781 A JP S63133781A JP 61279647 A JP61279647 A JP 61279647A JP 27964786 A JP27964786 A JP 27964786A JP S63133781 A JPS63133781 A JP S63133781A
- Authority
- JP
- Japan
- Prior art keywords
- repeater
- power supply
- monitoring
- monitor
- supply device
- 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
Links
- 238000001514 detection method Methods 0.000 claims abstract description 8
- 238000012544 monitoring process Methods 0.000 claims description 38
- 238000000034 method Methods 0.000 claims description 8
- 238000011144 upstream manufacturing Methods 0.000 claims description 7
- 230000002457 bidirectional effect Effects 0.000 claims description 3
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
Landscapes
- Monitoring And Testing Of Transmission In General (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は上位局（即ち、ヘッドエンド）にケーブルを介
して接続された複数の中継器と、該中継器に給電する給
電装置とを有する双方向ＣＡＴＶシステムに関し、特に
、上位局の監視制御装置からのポーリングにより各中継
器と各給電装置の障害探索０回線監視を行なう監視方式
〔従来の技術〕
従来１群別方式を用いて双方向に情報を伝送する双方向
０ＡＴＶシステムの監視（ＳＶ）方式は、各中継器と各
給電装置に各々異なるアドレスを有する監視情報送出器
（ＳＭＴ）を設けている。各監視情報送出器は、ヘッド
エンドに置かれた監視制御装置から送信されたアドレス
信号を受信して解析し、自身のアドレスと同一であった
場合にのみ自身の監視情報をヘッドエンドに送出し、ヘ
ッドエンドの該監視制御装置では各中継器及び各給電装
置の監視情報送出器から送出された監視情報を受信、解
析して障害の有無、障害点の探索を行なっている。[Detailed Description of the Invention] [Industrial Application Field] The present invention includes a plurality of repeaters connected to an upper station (i.e., head end) via cables, and a power supply device that supplies power to the repeaters. Regarding the bidirectional CATV system, in particular, a monitoring method that performs zero-line monitoring for failure detection of each repeater and each power supply device by polling from the supervisory control device of the upper station [Prior technology] In the monitoring (SV) method of the bidirectional 0ATV system, each repeater and each power supply device are provided with a monitoring information transmitter (SMT) having a different address. Each monitoring information transmitter receives and analyzes the address signal sent from the monitoring control device placed in the headend, and sends its own monitoring information to the headend only if the address is the same as its own address. The head-end monitoring control device receives and analyzes the monitoring information sent from the monitoring information transmitter of each repeater and each power supply device, and searches for the presence or absence of a failure and the point of failure.
第２図に従来の監視方式を示す。ヘッドエンド１は監視
制御装置２を有する。ヘッドエンド１は、ケーブル３を
介して中継器４に接続され。Figure 2 shows a conventional monitoring system. The headend 1 has a supervisory control device 2 . The headend 1 is connected to a repeater 4 via a cable 3.
以下同様にケーブル５．７．９．１１．１３を介して中
継器６．８．１０．１２．１４に接続される。Thereafter, it is similarly connected to repeater 6.8.10.12.14 via cable 5.7.9.11.13.
中継器４，６は給電装置１５より供給される給電電流に
より動作する。該給電電流はケーブル１６を介して中継
器４に供給されると共に、ケーブル５を介して中継器６
にも供給される。The repeaters 4 and 6 are operated by the power supply current supplied from the power supply device 15. The power supply current is supplied to the repeater 4 via the cable 16, and is also supplied to the repeater 6 via the cable 5.
Also supplied.
中継器８．１０，１２．１４も同様にして給電装置１７
より供給される給電電流により動作する。Repeaters 8.10 and 12.14 are also connected to power supply device 17 in the same way.
It operates using the power supply current supplied by the
この際、給電装置１７よりの給電電流はケーブル１８を
介して中継器１２に供給され、ケーブル１６を介して中
継器１４に供給すると同時にケーブル１１を介して中継
器１０に供給され。At this time, the power supply current from the power supply device 17 is supplied to the repeater 12 via the cable 18, and simultaneously supplied to the repeater 14 via the cable 16 and simultaneously supplied to the repeater 10 via the cable 11.
さらにケーブル９を介して中継器８に供給される。この
ように、中継器１２．１０．８は、上位局であるヘッド
エンド１に対して上りの給電となる区間に存在する。即
ち、中継器１２．１０゜８は給電装置１７から上り給電
されることとなる。Furthermore, it is supplied to the repeater 8 via the cable 9. In this way, the repeater 12.10.8 exists in the section where upstream power is supplied to the head end 1, which is the upper station. That is, the repeater 12.10°8 is supplied with power upstream from the power supply device 17.
上述した各中継器は２分配入出力端子を有しており、こ
の分配入出力端子が各家庭の受像機などに接続される。Each of the repeaters described above has two distribution input/output terminals, and this distribution input/output terminal is connected to a television receiver in each home.
また、給電装置１５は中継器４の分配入出力端子４’に
ケーブル１９を介して接続される。給電装置１７は中継
器６の分配入出力端子６１にケーブル２０を介して接続
される。各中継器及び各給電装置は各々固有のアドレス
を有する監視情報送出器を有し、監視制御装置２より送
出されるアドレス信号を受信して自身のアドレスと照合
し、自身のアドレスと合致した場合には自身の状態に関
する監視情報を監視制御装置２に向けて送出する。Further, the power supply device 15 is connected to the distribution input/output terminal 4' of the repeater 4 via a cable 19. The power supply device 17 is connected to the distribution input/output terminal 61 of the repeater 6 via a cable 20. Each repeater and each power supply device has a monitoring information transmitter having a unique address, receives the address signal sent from the monitoring control device 2, checks it against its own address, and if it matches its own address , it sends monitoring information regarding its own status to the monitoring and control device 2 .
この場合、中継器８が障害となシ、下シ回線又は上り回
線が断になると、中継器８．１０゜１２．１４の全てが
ポーリングに対し無応答となる。また、ケーブル９，１
１．１８のいずれがが断となった場合にも、中継器８．
１０．１２゜１４は全て監視制御装置２からのポーリン
グに対して無応答となる。In this case, if there is no failure in the repeater 8 and the downlink or uplink is disconnected, all of the repeaters 8, 10 and 12, 14 will not respond to polling. Also, cables 9, 1
1.18 is disconnected, the repeater 8.
10, 12, and 14 are all unresponsive to polling from the supervisory control device 2.
上述したように、従来の監視方式は、上シ給電区間の障
害により、該上り給電区間の、ヘッドエンドに一番近い
中継器に給電されなくなった場合には、該中継器以降の
全ての中継器が監視制御装置からのポーリングに対して
無応答となるため、該中継器の障害と該上り給電区間の
障害との判別ができないという欠点がある。As mentioned above, in the conventional monitoring method, if power is no longer supplied to the repeater closest to the head end in the upstream power supply section due to a failure in the upstream power supply section, all relays after that repeater are Since the device does not respond to polling from the supervisory control device, there is a drawback that it is impossible to distinguish between a fault in the repeater and a fault in the upstream power supply section.
本発明の目的は、上述した欠点を除去し、障害箇所を正
確に判別できる双方向０ＡＴＶシステムの監視方式を提
供することにある。SUMMARY OF THE INVENTION An object of the present invention is to eliminate the above-mentioned drawbacks and to provide a monitoring method for a two-way 0ATV system that can accurately determine the location of a fault.
以下今日
〔問題点を解決するための手段〕
本発明の監視方式は、上シ給電区間におかれた中継器に
監視信号発生器を設け、該監視信号発生器により発生さ
れた監視信号を、該中継器に給電電流を供給している給
電装置に、該中継器の分配出力から引き込む。そして、
該給電装置には該監視信号を検出するための検出回路を
設け、該給電装置とは異なる給電装置により動作する上
位の中継器の分配入出力端子に、前記検出した監視信号
を上位局の監視制御装置からのポーリングに対する応答
信号として入力して。Hereinafter, [Means for Solving the Problems] The monitoring method of the present invention includes providing a monitoring signal generator in a repeater placed in the upper power supply section, and transmitting the monitoring signal generated by the monitoring signal generator. A power supply device that is supplying power supply current to the repeater is drawn from the distribution output of the repeater. and,
The power feeding device is provided with a detection circuit for detecting the monitoring signal, and the detected monitoring signal is sent to the distribution input/output terminal of a higher-level repeater operated by a power feeding device different from the power feeding device for monitoring the higher-level station. Input as a response signal to polling from the control device.
該監視信号により得られた情報を前記監視制御装置に伝
える機能を有している。It has a function of transmitting information obtained from the supervisory signal to the supervisory control device.
次に１本発明について図面を参照して説明する。 Next, one embodiment of the present invention will be explained with reference to the drawings.
第１図は本発明の一実施例による監視方式のシステム構
成図である。ヘッドエンド１は監視制御装置２を有する
。ヘッドエンド１はケーブル３を介して中継器４に接続
され、以下同様にケーブル５．７．９．１１．１３を介
して中継器６゜８，１０．１２．１４に接続される。中
継器４．６は、第１図の場合と同様に、給電装置１５よ
りケーブル１６を介して供給される給電電流により各々
動作する。中継装置８．１０．１２．１４は。FIG. 1 is a system configuration diagram of a monitoring method according to an embodiment of the present invention. The headend 1 has a supervisory control device 2 . The headend 1 is connected via a cable 3 to a repeater 4, and likewise via cables 5.7.9.11.13 to repeaters 6.8, 10.12.14. As in the case of FIG. 1, the repeaters 4.6 are each operated by the power supply current supplied from the power supply device 15 via the cable 16. Relay device 8.10.12.14 is.
第１図の場合と同様に、給電装置１７よりケーブル１８
，１３．１１．９を介して供給される給電電流により各
々動作する。給電装置１５及び１７は、中継器４及び乙
の分配入出力端子４′及び６１に、ケーブル１９及び２
０を介して、それぞれ接続され、監視制御装置２との間
でポーリングによって動作状態に関する情報を送出する
。As in the case of FIG. 1, from the power supply device 17 to the cable 18
, 13.11.9, respectively. The power supply devices 15 and 17 connect cables 19 and 2 to the distribution input/output terminals 4' and 61 of the repeater 4 and B.
0, and transmits information regarding the operating status to and from the supervisory control device 2 by polling.
ヘッドエンド１に対してより給電となる中継器８，１０
及び１２は監視信号発生器２１．２２及び２３をそれぞ
れ有し、常時互いに異なる監視信号を送出する。給電装
置１７は監視信号検出回路２４を有し、前述の監視信号
を監視し。Relays 8 and 10 that provide more power to the headend 1
and 12 have supervisory signal generators 21, 22 and 23, respectively, and always send out different supervisory signals. The power supply device 17 has a supervisory signal detection circuit 24 and monitors the aforementioned supervisory signal.
給電装置１７がポーリングされた時には、該監視信号の
状態に関する情報も併せて、ケーブル２０を介して、監
視制御装置２に送出する。When the power supply device 17 is polled, information regarding the status of the monitoring signal is also sent to the monitoring and control device 2 via the cable 20 .
従って、中継器８が無応答になった時も、ヘッドエンド
１が給電装置１７に対してケーブル２０を介してポーリ
ングを行ない、給電装置１７から、監視信号発生器２１
．２２．２５からの監視信号の有無に関する情報をケー
ブル２０を介して収集することにより、障害区間の探索
ができる。Therefore, even when the repeater 8 becomes unresponsive, the head end 1 polls the power supply device 17 via the cable 20, and the power supply device 17 sends a signal to the supervisory signal generator 21.
．． By collecting information regarding the presence or absence of a monitoring signal from 22.25 via the cable 20, it is possible to search for a faulty section.
以上説明したように本発明は、上り給電区間の中継器に
監視信号発生器を配し、給電装置に置いた監視信号検出
回路によって該監視信号発生器より送出される監視信号
を検出して該中継器の動作状態を判別し、該給電装置に
置かれてポーリングによって動作する監視情報送出器を
介して該中継器の動作状態を、上位局（ヘッドエンド）
におかれた監視制御装置に伝えることによって、上り給
電区間の障害区間探索が正確にかつ容易に出来る効果が
ある。As explained above, the present invention arranges a supervisory signal generator in a repeater in an upstream power supply section, and detects a supervisory signal sent from the supervisory signal generator by a supervisory signal detection circuit placed in a power supply device. The operating status of the repeater is determined, and the operating status of the repeater is transmitted to the upper station (head end) via a monitoring information transmitter that is placed in the power supply device and operates by polling.
By transmitting the information to the monitoring and control device installed at the site, there is an effect that the fault section search for the uplink power supply section can be performed accurately and easily.
区１余日One more day in the ward
第１図は本発明の一実施例による監視方式のシステム構
成図である。第２図は従来の監視方式のシステム構成図
である。
１・・・ヘッドエンド、２・・・監視制御装置、５゜５
、７．９．１１．１３．１６．１８．１９．２０．２５
・・・ケーブル、 ４．６．８．１０．１２．１４・・
・中継器、１５．１７・・・給電装置、 ２１．２２．
２５・・・監視信号発生器。
２４・・・監視信号検出回路、 ４’、 ６’、 １２
’・・・中継器４．６．１２の分配入出力端子。FIG. 1 is a system configuration diagram of a monitoring method according to an embodiment of the present invention. FIG. 2 is a system configuration diagram of a conventional monitoring system. 1...Head end, 2...Monitoring control device, 5゜5
, 7.9.11.13.16.18.19.20.25
・・・Cable, 4.6.8.10.12.14...
・Repeater, 15.17...Power supply device, 21.22.
25... Supervisory signal generator. 24... Supervisory signal detection circuit, 4', 6', 12
'...Distribution input/output terminal of repeater 4.6.12.
Claims (1)
と、該中継器に給電する給電装置とを有する双方向ＣＡ
ＴＶシステムの各中継器と各給電装置の動作状態監視を
、前記上位局の監視制御装置からのポーリングにて行な
う監視方式において、前記上位局に対して上りの給電と
なる区間の中継器に監視信号発生器を設けるとともに、
該区間の中継器に給電電流を供給する給電装置には、該
監視信号発生器により発生された監視信号を検出する監
視信号検出回路を設け、該監視信号検出回路が設けられ
た給電装置は、前記監視信号発生回路が設けられた中継
器より前記上位局寄りの下り給電されている中継器の分
配入出力端子に接続されており、該下り給電されている
中継器の分配入出力端子を通してなされた前記ポーリン
グに対する応答信号として前記検出した監視信号を、前
記下り給電されている中継器の分配入出力端子を通して
前記監視制御装置に与えることを特徴とする監視方式。1. Bidirectional CA that has multiple repeaters connected to the upper station via cables and a power supply device that supplies power to the repeaters
In a monitoring method in which the operating status of each repeater and each power supply device of the TV system is monitored by polling from the supervisory control device of the upper station, monitoring is performed on the repeater in the section that supplies upstream power to the upper station. In addition to providing a signal generator,
A power supply device that supplies power supply current to a repeater in the section is provided with a supervisory signal detection circuit that detects a supervisory signal generated by the supervisory signal generator, and the power supply device equipped with the supervisory signal detection circuit is configured to: The repeater provided with the supervisory signal generation circuit is connected to the distribution input/output terminal of a repeater that is supplied with downstream power closer to the upper station, and is connected through the distribution input/output terminal of the repeater that is supplied with downstream power. The monitoring system is characterized in that the detected monitoring signal is provided as a response signal to the polling to the monitoring control device through a distribution input/output terminal of the repeater receiving downstream power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61279647A JPS63133781A (en) | 1986-11-26 | 1986-11-26 | Monitor system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61279647A JPS63133781A (en) | 1986-11-26 | 1986-11-26 | Monitor system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63133781A true JPS63133781A (en) | 1988-06-06 |
| JPH0551240B2 JPH0551240B2 (en) | 1993-08-02 |
Family
ID=17613895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61279647A Granted JPS63133781A (en) | 1986-11-26 | 1986-11-26 | Monitor system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63133781A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01268282A (en) * | 1988-04-18 | 1989-10-25 | Nec Corp | Supervising system |
-
1986
- 1986-11-26 JP JP61279647A patent/JPS63133781A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01268282A (en) * | 1988-04-18 | 1989-10-25 | Nec Corp | Supervising system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0551240B2 (en) | 1993-08-02 |
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