JPH06303246A - Fault part retrieval system - Google Patents
Fault part retrieval systemInfo
- Publication number
- JPH06303246A JPH06303246A JP5105953A JP10595393A JPH06303246A JP H06303246 A JPH06303246 A JP H06303246A JP 5105953 A JP5105953 A JP 5105953A JP 10595393 A JP10595393 A JP 10595393A JP H06303246 A JPH06303246 A JP H06303246A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- test signal
- returned
- test
- specific 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.)
- Pending
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、複数の装置をループ
状に結合し、複数の装置間で信号の送受を行う通信ネッ
トワークにおいて、間欠障害（ＣＲＣエラー等）等の発
生時、障害個所を短時間で特定することのできる障害個
所検索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 communication network in which a plurality of devices are connected in a loop and a signal is transmitted and received between the plurality of devices. The present invention relates to a fault location search method that can be specified in a short time.
【０００２】[0002]
【従来の技術】従来、この種の通信ネットワークにおい
ては、各装置に信号受信回数と間欠障害等で受信異常と
なった回数を記憶させ、これらの記憶情報から障害個所
を特定しようとしていた。2. Description of the Related Art Conventionally, in this type of communication network, the number of signal reception times and the number of times of abnormal reception due to intermittent failure or the like are stored in each device, and the failure point is specified from these stored information.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、このよ
うな従来の障害個所検索方式では、装置数が多い場合
や、障害個所が複数存在した場合、障害個所を特定する
のにたいへんな時間を要した。However, in such a conventional fault location search method, it takes a lot of time to identify the fault location when the number of devices is large or there are a plurality of fault locations. .
【０００４】本発明はこのような課題を解決するために
なされたもので、その目的とするところは、間欠障害等
の発生時、障害個所を短時間で特定することのできる障
害個所検索方式を提供することにある。The present invention has been made in order to solve such a problem, and an object thereof is to provide a fault location search system capable of identifying a fault location in a short time when an intermittent failure or the like occurs. To provide.
【０００５】[0005]
【課題を解決するための手段】このような目的を達成す
るために、本発明は、第１〜第Ｎの装置を第１〜第Ｎの
信号路を介してループ状に結合し、第１〜第Ｎの装置間
で信号の送受を行う通信ネットワークにおいて、第１の
装置を特定装置とし、この特定装置より他の任意の装置
Ｘへ第１〜第Ｘ−１の信号路を介して試験信号を送るも
のとし、任意の装置Ｘにおいて、特定装置から送られて
くる試験信号の信号パターンの正常性を識別し、正常で
あればその試験信号を第Ｘ〜第Ｎの信号路を介して特定
装置へ返送するものとし、異常であればその試験信号の
信号パターンを正規の信号パターンに補正しその補正し
た試験信号と受信異常を示す信号とを第Ｘ〜第Ｎの信号
路を介して特定装置へ返送するものとし、特定装置にお
いて、任意の装置Ｘから返送されてくる試験信号の信号
パターンの正常・異常と受信異常を示す信号の有・無と
に基づき、障害個所を特定して行くようにしたものであ
る。In order to achieve such an object, the present invention is to connect first to Nth devices in a loop through first to Nth signal paths, and ~ In a communication network for transmitting and receiving signals between Nth devices, the first device is used as a specific device, and a test is performed from this specific device to any other device X via the 1st to (X-1) th signal paths. It is assumed that a signal is sent, and in any device X, the normality of the signal pattern of the test signal sent from the specific device is identified, and if normal, the test signal is sent through the Xth to Nth signal paths. If it is abnormal, the signal pattern of the test signal is corrected to a normal signal pattern, and the corrected test signal and the signal indicating the reception abnormality are transmitted through the Xth to Nth signal paths. It shall be returned to a specific device, and in the specific device, any device Based on normal or abnormal signal pattern of the returned come test signal and the organic-free signal indicating the reception abnormality, in which as going to determine the fault location.
【０００６】[0006]
【作用】したがってこの発明によれば、特定装置より他
の任意の装置Ｘへ、第１〜第Ｘ−１の信号路を介して試
験信号が送られる。任意の装置Ｘは、特定装置から送ら
れてくる試験信号の信号パターンの正常性を識別し、正
常であれば、その試験信号を第Ｘ〜第Ｎの信号路を介し
て特定装置へ返送する。異常であれば、その試験信号の
信号パターンを正規の信号パターンに補正し、その補正
した試験信号と受信異常を示す信号とを、第Ｘ〜第Ｎの
信号路を介して特定装置へ返送する。特定装置は、任意
の装置Ｘから返送されてくる試験信号の信号パターンの
正常・異常と受信異常を示す信号の有・無とに基づき、
障害個所を特定して行く。すなわち、特定装置におい
て、任意の装置Ｘから返送されてくる試験信号の信号パ
ターンが「異常」で受信異常を示す信号が「無い」場合
には、第Ｘ〜第Ｎの信号路側に障害個所があると判断す
るものとし、任意の装置Ｘから返送されてくる試験信号
の信号パターンが「正常」で受信異常を示す信号が「有
る」場合には、第１〜第Ｘ−１の信号路側に障害個所が
あると判断するものとすれば、障害があると判断した信
号路側において、任意の装置Ｘを変えて上記動作を繰り
返すことにより、障害個所を特定して行くことができ
る。Therefore, according to the present invention, the test signal is sent from the specific device to any other device X via the first to (X-1) th signal paths. The arbitrary device X identifies the normality of the signal pattern of the test signal sent from the specific device, and if normal, returns the test signal to the specific device via the Xth to Nth signal paths. . If it is abnormal, the signal pattern of the test signal is corrected to a regular signal pattern, and the corrected test signal and the signal indicating the reception abnormality are returned to the specific device via the Xth to Nth signal paths. . The specific device is based on whether the signal pattern of the test signal returned from the arbitrary device X is normal / abnormal and presence / absence of a signal indicating reception abnormality,
Identify the obstacle point. That is, in the specific device, when the signal pattern of the test signal returned from the arbitrary device X is “abnormal” and there is no signal indicating reception abnormality, there is an obstacle point on the Xth to Nth signal path sides. If the signal pattern of the test signal returned from the arbitrary device X is “normal” and the signal indicating the reception abnormality is “present”, it is determined that there is a signal on the first to X−1th signal path side. If it is determined that there is a failure point, the failure point can be specified by changing the arbitrary device X and repeating the above operation on the side of the signal path that is determined to have a failure.
【０００７】[0007]
【実施例】以下、本発明を実施例に基づき詳細に説明す
る。EXAMPLES The present invention will now be described in detail based on examples.
【０００８】図１はこの発明の一実施例を適用してなる
通信ネットワークの構成図である。同図において、１〜
４は装置、Ｓ１〜Ｓ４は信号路であり、装置１〜４は信
号路Ｓ１〜Ｓ４を介してループ状に結合されている。FIG. 1 is a block diagram of a communication network to which an embodiment of the present invention is applied. In the figure,
4 is a device, S1 to S4 are signal paths, and the devices 1 to 4 are connected in a loop through signal paths S1 to S4.
【０００９】この通信ネットワークでは、各装置間で信
号の送受が行われている状態において、間欠障害が発生
すると、例えば装置１を特定装置として、この特定装置
１から信号路Ｓ１，Ｓ２を介して装置３へ試験信号が送
られる。In this communication network, when an intermittent failure occurs in the state where signals are transmitted and received between the respective devices, for example, the device 1 is set as the specific device and the specific device 1 is transmitted through the signal paths S1 and S2. A test signal is sent to the device 3.
【００１０】装置３では特定装置１から送られてくる試
験信号の信号パターンの正常性を識別する。識別した結
果が正常であれば、装置３は、受信データ（試験信号）
をそのまま信号路Ｓ３，Ｓ４を介して特定装置１へ返送
する。識別した結果が異常であれば、装置３は、受信異
常を記憶したうえ、受信データ（試験信号）を正規の信
号パターンに補正し、その補正した受信データ（試験信
号）と受信異常表示信号（受信異常を示す信号）とを信
号路Ｓ３，Ｓ４を介して特定装置１へ返送する。The device 3 identifies the normality of the signal pattern of the test signal sent from the specific device 1. If the identified result is normal, the device 3 receives the received data (test signal).
Is returned to the specific apparatus 1 via the signal paths S3 and S4 as it is. If the identified result is abnormal, the device 3 stores the reception abnormality, corrects the reception data (test signal) to a regular signal pattern, and corrects the reception data (test signal) and the reception abnormality display signal ( Signal indicating reception abnormality) is sent back to the specific apparatus 1 via the signal paths S3 and S4.
【００１１】特定装置１では装置３からの試験信号の信
号パターンの正常性と受信異常表示信号の有・無を識別
する。この識別結果に基づき、特定装置１は、装置３か
ら返送されてくる試験信号の信号パターンが「異常」で
受信異常表示信号が「無い」場合、信号路Ｓ３，Ｓ４側
に障害個所があると判断し、装置３から返送されてくる
試験信号の信号パターンが「正常」で受信異常表示信号
が「有る」場合、信号路Ｓ１，Ｓ２側に障害個所がある
と判断する。The specific device 1 discriminates the normality of the signal pattern of the test signal from the device 3 and the presence / absence of the reception abnormality display signal. Based on this identification result, if the signal pattern of the test signal returned from the device 3 is "abnormal" and the reception abnormality display signal is "absent", the identifying device 1 determines that there is an obstacle on the signal paths S3, S4. If the signal pattern of the test signal returned from the device 3 is “normal” and the reception abnormality display signal is “present”, it is determined that there is a faulty part on the signal paths S1 and S2.
【００１２】今、特定装置１が、信号路Ｓ１，Ｓ２側に
障害個所があると判断したとする。この場合、特定装置
１は、障害個所があると判断した信号路Ｓ１，Ｓ２側の
装置２へ、信号路Ｓ１を介して試験信号を送る。It is now assumed that the identifying apparatus 1 has determined that there is a faulty portion on the signal path S1, S2 side. In this case, the specific device 1 sends a test signal via the signal path S1 to the device 2 on the side of the signal paths S1 and S2 that has determined that there is an obstacle.
【００１３】装置２では特定装置１から送られてくる試
験信号の信号パターンの正常性を識別する。識別した結
果が正常であれば、装置２は、受信データ（試験信号）
をそのまま信号路Ｓ２，Ｓ３，Ｓ４を介して特定装置１
へ返送する。識別した結果が異常であれば、装置２は、
受信異常を記憶したうえ、受信データ（試験信号）を正
規の信号パターンに補正し、その補正した受信データ
（試験信号）と受信異常表示信号（受信異常を示す信
号）とを信号路Ｓ２，Ｓ３，Ｓ４を介して特定装置１へ
返送する。The device 2 identifies the normality of the signal pattern of the test signal sent from the specific device 1. If the identified result is normal, the device 2 receives the received data (test signal).
To the specific device 1 via the signal paths S2, S3, S4 as they are.
Return to. If the identified result is abnormal, the device 2
After storing the reception abnormality, the reception data (test signal) is corrected to a regular signal pattern, and the corrected reception data (test signal) and the reception abnormality display signal (signal indicating the reception abnormality) are signal paths S2 and S3. , S4, and returns to the specific device 1.
【００１４】特定装置１では、装置２からの試験信号の
信号パターンの正常性と受信異常表示信号の有・無を識
別する。この識別結果に基づき、特定装置１は、装置２
から返送されてくる試験信号の信号パターンが「異常」
で受信異常表示信号が「無い」場合、信号路Ｓ２に障害
個所があると判断し、装置２から返送されてくる試験信
号の信号パターンが「正常」で受信異常表示信号が「有
る」場合、信号路Ｓ１に障害個所があると判断する。In the specific device 1, the normality of the signal pattern of the test signal from the device 2 and the presence / absence of the reception abnormality display signal are discriminated. Based on this identification result, the identifying device 1 determines the device 2
The signal pattern of the test signal returned from is "abnormal"
If the reception abnormality display signal is “absent”, it is determined that there is a faulty part in the signal path S2, and if the signal pattern of the test signal returned from the device 2 is “normal” and the reception abnormality display signal is “present”, It is determined that there is an obstacle in the signal path S1.
【００１５】[0015]
【発明の効果】以上説明したことから明らかなように本
発明によれば、特定装置から他の任意の装置へ試験信号
を送ることにより、特定装置において、他の任意の装置
から返送されてくる試験信号の信号パターンの正常・異
常と受信異常を示す信号の有・無とに基づき、障害個所
が特定されて行くので、間欠障害等の発生時、障害個所
を短時間で特定することが可能となる。As is apparent from the above description, according to the present invention, by sending a test signal from a specific device to another arbitrary device, the specific device returns the signal from any other device. Since the failure location is identified based on whether the signal pattern of the test signal is normal / abnormal and the signal indicating the reception abnormality, it is possible to identify the failure location in a short time when an intermittent failure occurs. Becomes
【図１】本発明の一実施例を適用してなる通信ネットワ
ークの構成図である。FIG. 1 is a configuration diagram of a communication network to which an embodiment of the present invention is applied.
１ 装置（Ａ） ２ 装置（Ｂ） ３ 装置（Ｃ） ４ 装置（Ｄ） Ｓ１ 信号路 Ｓ２ 信号路 Ｓ３ 信号路 Ｓ４ 信号路 1 device (A) 2 device (B) 3 device (C) 4 device (D) S1 signal path S2 signal path S3 signal path S4 signal path
【手続補正書】[Procedure amendment]
【提出日】平成５年１２月８日[Submission date] December 8, 1993
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】特許請求の範囲[Name of item to be amended] Claims
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【特許請求の範囲】[Claims]
Claims (1)
を介してループ状に結合し、第１〜第Ｎの装置間で信号
の送受を行う通信ネットワークにおいて、 前記第１の装置を特定装置とし、この特定装置より他の
任意の装置Ｘへ前記第１〜第Ｘ−１の信号路を介して試
験信号を送り、 前記任意の装置Ｘは、前記特定装置から送られてくる試
験信号の信号パターンの正常性を識別し、正常であれば
その試験信号を前記第Ｘ〜第Ｎの信号路を介して前記特
定装置へ返送し、異常であればその試験信号の信号パタ
ーンを正規の信号パターンに補正しその補正した試験信
号と受信異常を示す信号とを前記第Ｘ〜第Ｎの信号路を
介して前記特定装置へ返送し、 前記特定装置は、前記任意の装置Ｘから返送されてくる
試験信号の信号パターンの正常・異常と受信異常を示す
信号の有・無とに基づき、障害個所を特定して行くこと
を特徴とする障害個所検索方式。1. A communication network in which first to N-th devices are coupled in a loop via first to N-th signal paths, and signals are transmitted and received between the first to N-th devices, 1 device as a specific device, and sends a test signal from this specific device to another arbitrary device X via the first to X-1th signal paths, and the arbitrary device X transmits from the specific device. The normality of the signal pattern of the received test signal is identified, and if normal, the test signal is returned to the specific device through the Xth to Nth signal paths, and if abnormal, the test signal The signal pattern is corrected to a regular signal pattern, and the corrected test signal and a signal indicating reception abnormality are returned to the specific device via the Xth to Nth signal paths, and the specific device is the arbitrary device. Whether the signal pattern of the test signal returned from the device X is normal or abnormal A fault location search method that identifies the fault location based on the presence / absence of a signal indicating a reception abnormality.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5105953A JPH06303246A (en) | 1993-04-09 | 1993-04-09 | Fault part retrieval system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5105953A JPH06303246A (en) | 1993-04-09 | 1993-04-09 | Fault part retrieval system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06303246A true JPH06303246A (en) | 1994-10-28 |
Family
ID=14421199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5105953A Pending JPH06303246A (en) | 1993-04-09 | 1993-04-09 | Fault part retrieval system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06303246A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008147845A (en) * | 2006-12-07 | 2008-06-26 | Hitachi Ltd | Network monitoring system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0237855A (en) * | 1988-07-28 | 1990-02-07 | Nec Corp | Data transmission equipment testing system |
-
1993
- 1993-04-09 JP JP5105953A patent/JPH06303246A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0237855A (en) * | 1988-07-28 | 1990-02-07 | Nec Corp | Data transmission equipment testing system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008147845A (en) * | 2006-12-07 | 2008-06-26 | Hitachi Ltd | Network monitoring system |
| JP4705904B2 (en) * | 2006-12-07 | 2011-06-22 | 株式会社日立製作所 | Network monitoring system |
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