JPH0546503A - Switching device - Google Patents

Switching device

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Publication number
JPH0546503A
JPH0546503A JP3228601A JP22860191A JPH0546503A JP H0546503 A JPH0546503 A JP H0546503A JP 3228601 A JP3228601 A JP 3228601A JP 22860191 A JP22860191 A JP 22860191A JP H0546503 A JPH0546503 A JP H0546503A
Authority
JP
Japan
Prior art keywords
switching
circuit
switching circuit
failure
power supply
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
Application number
JP3228601A
Other languages
Japanese (ja)
Inventor
Kazunori Kita
和則 北
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Priority to JP3228601A priority Critical patent/JPH0546503A/en
Publication of JPH0546503A publication Critical patent/JPH0546503A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To eliminate a detect with which the fault of a switch circuit gives a serious hindrance to the operation of an information processing system with a switching device used in the system. CONSTITUTION:A stand-by switch circuit 2 working in place of a switch circuit 1 is provided together with a switch control circuit 3 containing a means which gives a switching instruction to switch the circuit 1 to the circuit 2 if the circuit 1 has a fault, an alarm circuit 4 which informs a maintenance engineer of the fault of the circuit 1 based on the alarm signal received from the circuit 3, and a power circuit 5 which is exclusive for the circuit 1.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は情報処理システムに使用
される切替装置に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switching device used in an information processing system.

【0002】[0002]

【従来の技術】従来のこの種の切替装置の一例を図2に
示し説明する。この図2において、20は切替回路、2
1は上位装置からの切替指示信号を受信して切替回路2
0の切替制御を行う切替制御回路、22は電源回路であ
る。そして、この切替装置はこの図2に示すように、情
報処理システムを構成する上位装置、つまり現用系およ
び予備系が切替回路20と接続され、この切替回路20
に具備するマトリックススイッチの接点にしたがって、
現用系または予備系の何れかと下位装置が接続される。
一方、例えば、上位装置の現用系で障害が発生し予備系
に切り替える場合には、上位装置から切替指示信号gが
切替制御回路21に入力され、切替制御信号hを制御し
て、切替回路20のマトリックススイッチの接点を指示
にしたがって切り替える。
2. Description of the Related Art An example of a conventional switching device of this type will be described with reference to FIG. In FIG. 2, 20 is a switching circuit, 2
1 receives a switching instruction signal from a higher-level device and switches circuit 2
A switching control circuit for controlling 0 switching and a power supply circuit 22. As shown in FIG. 2, this switching device is connected to the switching circuit 20 by a host device constituting the information processing system, that is, an active system and a standby system.
According to the contacts of the matrix switch equipped in
A lower device is connected to either the active system or the standby system.
On the other hand, for example, when a failure occurs in the active system of the host device and the system is switched to the standby system, the switch command signal g is input from the host device to the switch control circuit 21, and the switch control signal h is controlled to switch the switch circuit 20. Switch the contacts of the matrix switch according to the instructions.

【0003】切替回路20は切り替えが終了すると、切
り替えが正常終了したか,切り替えが異常終了したかを
切替状態信号iとして切替制御回路21に送信する。切
替制御回路21はこの切替状態信号iを受信して、上位
装置に切替終了信号jとして送信し、一連の切り替え動
作は終了する。上位装置は切替終了信号jの内容が異常
終了の場合、切り替え異常のための処理を行う。なお、
この図2に示す装置は、各々の回路の電源を供給する電
源回路22を有している。
When the switching is completed, the switching circuit 20 sends to the switching control circuit 21 a switching state signal i indicating whether the switching is normally completed or the switching is abnormally completed. The switching control circuit 21 receives the switching state signal i and transmits it as a switching end signal j to the host device, and the series of switching operations ends. When the content of the switching end signal j is abnormally terminated, the host device performs processing for switching abnormality. In addition,
The apparatus shown in FIG. 2 has a power supply circuit 22 for supplying power to each circuit.

【0004】[0004]

【発明が解決しようとする課題】上述した従来の切替装
置では、上位装置から切替指示があったときに、指示内
容にしたがって切替回路のマトリックススイッチを1回
のみ切り替え、上位装置に切替終了報告を行うため、例
えば、切替回路に障害があった場合に切替異常終了とな
り、即、切替装置全体の障害としてしまうという課題が
あった。また、運用中に障害部品の交換を行う場合、切
替装置全体の電源を切断する必要があり、システムの運
用に重大な支障を及ぼすという課題があった。
In the above-mentioned conventional switching device, when a switching instruction is given from the host device, the matrix switch of the switching circuit is switched only once according to the instruction content, and a switching end report is sent to the host device. Therefore, there is a problem that, for example, when there is a failure in the switching circuit, the switching ends abnormally, which immediately causes a failure of the entire switching device. In addition, when replacing a faulty part during operation, it is necessary to turn off the power of the entire switching device, which poses a problem of seriously hindering the operation of the system.

【0005】[0005]

【課題を解決するための手段】本発明の切替装置は、情
報処理システムの複数の上位装置と下位装置の間にあっ
て、相互の入出力データを切り替えるための切替回路
と、この切替回路の予備としての予備切替回路と、上記
上位装置からの切替指示信号を受信して上記切替回路の
切替制御を行いかつこの切替回路に障害があったとき,
上記予備切替回路に切り替えるための切替指示を行う手
段を有する切替制御回路と、この切替制御回路からの警
報信号に基づいて保守者に障害があったことを知らせる
警報回路を備えてなるものである。また、本発明の別の
発明による切替装置は上記のものにおいて、切替回路に
対応する専用の電源回路を有し、上記切替回路に障害が
あった際にこの切替回路に供給している電源を切断し、
切替装置全体の電源を切断せず、上記切替回路の障害部
品の交換を可能とするようにしたものである。
A switching device of the present invention is provided between a plurality of higher-order devices and lower-order devices of an information processing system, and a switching circuit for switching mutual input / output data, and a backup circuit for the switching circuit. Of the standby switching circuit and the switching instruction signal from the host device to perform switching control of the switching circuit and when the switching circuit has a failure,
It comprises a switching control circuit having means for giving a switching instruction for switching to the above-mentioned preliminary switching circuit, and an alarm circuit for notifying a maintenance person of a failure based on an alarm signal from the switching control circuit. . Also, in the above-described switching device according to another invention of the present invention, the switching device has a dedicated power supply circuit corresponding to the switching circuit, and supplies power to the switching circuit when the switching circuit has a failure. Disconnect,
It is possible to replace a faulty part of the switching circuit without disconnecting the power of the entire switching device.

【0006】[0006]

【作用】本発明においては、切替回路に障害があった場
合、予備切替回路がその機能を代行するようにし、ま
た、切替回路専用の電源回路のみを切断できるようにし
て、システムの運用中に保守者が障害のあった切替回路
の障害部品を交換できるようにする。
In the present invention, when the switching circuit has a failure, the spare switching circuit takes its place of the function, and only the power supply circuit dedicated to the switching circuit can be disconnected so that the system can be operated during the operation of the system. Allow maintenance personnel to replace the faulty part of the faulty switching circuit.

【0007】[0007]

【実施例】図1は本発明による切替装置の一実施例を示
すブロック図である。この図1において、1は情報処理
システムの複数の上位装置と下位装置の間にあって、相
互の入出力データを切り替えるための切替回路、2はこ
の切替回路の予備としての予備切替回路、3は上位装置
からの切替指示信号bを受信して切替回路1の切替制御
を行いかつこの切替回路1に障害があったとき,予備切
替回路2に切り替えるための切替指示を行う手段を有す
る切替制御回路、4はこの切替制御回路3からの警報信
号fに基づいて保守者に障害があったことを知らせる警
報回路、5は電源回路で、この電源回路5は切替回路1
に対応する専用の電源回路である。6は基本電源回路で
ある。
1 is a block diagram showing an embodiment of a switching device according to the present invention. In FIG. 1, 1 is a switching circuit for switching input / output data between a plurality of upper and lower devices of an information processing system, 2 is a spare switching circuit as a spare of this switching circuit, and 3 is an upper device. A switching control circuit having means for receiving a switching instruction signal b from the device to control switching of the switching circuit 1 and, when there is a failure in the switching circuit 1, issuing a switching instruction for switching to the standby switching circuit 2. Reference numeral 4 is an alarm circuit for notifying a maintenance person of a failure based on the alarm signal f from the switching control circuit 3, 5 is a power circuit, and this power circuit 5 is the switching circuit 1.
It is a dedicated power supply circuit corresponding to. Reference numeral 6 is a basic power supply circuit.

【0008】このように、切替回路1に対応する専用の
電源回路を有し、この切替回路1に障害があった際にこ
の切替回路1に供給している電源を切断し、切替装置全
体の電源を切断せず、切替回路1の障害部品の交換を可
能とするように構成されている。
As described above, the dedicated power supply circuit corresponding to the switching circuit 1 is provided, and when there is a failure in the switching circuit 1, the power supply to the switching circuit 1 is cut off, and the entire switching device is operated. It is configured so that the failed component of the switching circuit 1 can be replaced without cutting off the power supply.

【0009】つぎにこの図1に示す実施例の動作を説明
する。まず、切替回路1は上位装置の現用系または予備
系のどちらかと下位装置をマトリックススイッチによっ
て接続する機能を有しており、この図1は上位装置の現
用系と下位装置が接続されていることを示す。ここで、
上位装置の現用系において障害が発生したとき、上位装
置は予備系と下位装置を接続するため、切替指示信号b
を切替制御回路3に送信する。この切替制御回路3は切
替指示信号bに基づいて、切替制御信号cに変換して切
替回路1に送信する。切替回路1は切替制御信号cに基
づいて、上位装置の現用系から予備系への切り替えを行
い、その結果を切替状態信号dとして切替制御回路3へ
送信する。
Next, the operation of the embodiment shown in FIG. 1 will be described. First, the switching circuit 1 has a function of connecting either the active system or the standby system of the upper device to the lower device by a matrix switch. In FIG. 1, the active system of the upper device and the lower device are connected. Indicates. here,
When a failure occurs in the active system of the higher-level device, the higher-level device connects the standby system and the lower-level device.
To the switching control circuit 3. The switching control circuit 3 converts the switching instruction signal b into a switching control signal c and transmits the switching control signal c to the switching circuit 1. The switching circuit 1 switches the host system from the active system to the standby system based on the switching control signal c, and sends the result to the switching control circuit 3 as a switching state signal d.

【0010】つぎに、切替制御回路3は切替状態信号d
の情報により、例えば、切替回路1の切替異常を認知す
ると、電源制御信号aにより切替回路1用の電源回路5
を切断すると共に、予備切替回路2に切替制御信号cを
送信する。また、切替回路1に障害のあったことを警報
信号fとして警報回路4に送信し、保守者に障害があっ
たことを知らせる。このとき、保守者は切替回路1の電
源回路5が切断されていることから、切替装置全体の電
源を切断しないで切替回路1の障害部品を交換すること
ができる。なお、切替回路1が正常に切り替えられた場
合には、切替終了信号eを上位装置に送信し、一連の切
り替え動作は終了する。
Next, the switching control circuit 3 outputs the switching state signal d.
If, for example, a switching abnormality of the switching circuit 1 is recognized from the information of the above, the power supply circuit 5 for the switching circuit 1 uses the power supply control signal a.
At the same time, the switching control signal c is transmitted to the preliminary switching circuit 2. Further, the fact that the switching circuit 1 has a failure is transmitted to the alarm circuit 4 as an alarm signal f to notify the maintenance person of the failure. At this time, since the power supply circuit 5 of the switching circuit 1 is disconnected, the maintenance person can replace the faulty part of the switching circuit 1 without disconnecting the power of the entire switching device. When the switching circuit 1 is normally switched, the switching end signal e is transmitted to the host device, and the series of switching operations ends.

【0011】そして、切替回路1に障害があり、切替制
御回路3から切替制御信号cを受信した予備切替回路2
は、上位装置の予備系と下位装置を接続するための切り
替え動作を行い、その結果を切替状態信号dとして切替
制御回路3へ送信する。切替制御回路3はこの切替状態
信号dの情報により、例えば、予備切替回路2の切替異
常を認知すると、切り替え動作が失敗したことを、切替
終了信号eとして上位装置に送信すると共に、警報信号
fとして警報回路4に送信し、保守者に切り替え動作が
失敗したことを知らせる。このとき、保守者は切替装置
全体の電源を切断して保守を行う。上位装置は切替終了
信号eにより切り替え動作失敗を認知し、障害のための
処理を行う。なお、予備切替回路2における切り替え動
作が正常終了すると切替制御回路3はその旨を切替終了
信号eとして上位装置に送信し、一連の切り替え動作が
終了する。
Then, the spare switching circuit 2 receives the switching control signal c from the switching control circuit 3 because the switching circuit 1 has a failure.
Performs a switching operation for connecting the standby system of the higher-level device and the lower-level device, and transmits the result as the switching status signal d to the switching control circuit 3. When the switching control circuit 3 recognizes, for example, a switching abnormality of the preliminary switching circuit 2 based on the information of the switching state signal d, the switching control circuit 3 transmits the failure of the switching operation to the higher-level device as the switching end signal e and the alarm signal f. Is sent to the alarm circuit 4 to inform the maintenance person that the switching operation has failed. At this time, the maintenance person turns off the power of the entire switching device to perform maintenance. The host device recognizes the failure of the switching operation by the switching end signal e and performs processing for the failure. When the switching operation in the preliminary switching circuit 2 ends normally, the switching control circuit 3 sends a message to that effect to the higher-level device as a switching end signal e, and the series of switching operations ends.

【0012】[0012]

【発明の効果】以上説明したように本発明は、切替回路
に障害があった場合、予備切替回路がその機能を代行す
るようにし、また、切替回路専用の電源回路のみを切断
できるようにして、システムの運用中に、保守者が障害
のあった切替回路の障害部品を交換できるようにしたの
で、切替回路の障害が、即、システムの運用に重大な支
障を及ぼす欠点を除去することができる効果がある。
As described above, according to the present invention, when there is a failure in the switching circuit, the spare switching circuit substitutes its function, and only the power circuit dedicated to the switching circuit can be disconnected. During the operation of the system, the maintenance personnel can replace the faulty part of the faulty switching circuit, so that the fault of the switching circuit can immediately eliminate the defect that seriously hinders the operation of the system. There is an effect that can be done.

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

【図1】本発明による切替装置の一実施例を示す回路図
である。
FIG. 1 is a circuit diagram showing an embodiment of a switching device according to the present invention.

【図2】従来の切替装置の一例を示す回路図である。FIG. 2 is a circuit diagram showing an example of a conventional switching device.

【符号の説明】[Explanation of symbols]

1 切替回路 2 予備切替回路 3 切替制御回路 4 警報回路 5 電源回路 6 基本電源回路 1 switching circuit 2 preliminary switching circuit 3 switching control circuit 4 alarm circuit 5 power supply circuit 6 basic power supply circuit

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 情報処理システムの複数の上位装置と下
位装置の間にあって、相互の入出力データを切り替える
ための切替回路と、この切替回路の予備としての予備切
替回路と、前記上位装置からの切替指示信号を受信して
前記切替回路の切替制御を行いかつこの切替回路に障害
があったとき,前記予備切替回路に切り替えるための切
替指示を行う手段を有する切替制御回路と、この切替制
御回路からの警報信号に基づいて保守者に障害があった
ことを知らせる警報回路を備えてなることを特徴とする
切替装置。
1. A switching circuit for switching input / output data between a plurality of upper and lower devices of an information processing system, a spare switching circuit as a spare of the switching circuit, and a switching circuit from the upper device. A switching control circuit having means for receiving a switching instruction signal, performing switching control of the switching circuit, and issuing a switching instruction for switching to the preliminary switching circuit when there is a failure in the switching circuit, and the switching control circuit A switching device comprising an alarm circuit for notifying a maintenance person of a failure based on an alarm signal from the switch.
【請求項2】 請求項1記載の切替装置において、切替
回路に対応する専用の電源回路を有し、前記切替回路に
障害があった際にこの切替回路に供給している電源を切
断し、切替装置全体の電源を切断せず、前記切替回路の
障害部品の交換を行い得るようにしたことを特徴とする
切替装置。
2. The switching device according to claim 1, further comprising a dedicated power supply circuit corresponding to the switching circuit, wherein when the switching circuit has a failure, the power supply to the switching circuit is cut off. A switching device characterized in that it is possible to replace a faulty part of the switching circuit without turning off the power supply of the entire switching device.
JP3228601A 1991-08-14 1991-08-14 Switching device Pending JPH0546503A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3228601A JPH0546503A (en) 1991-08-14 1991-08-14 Switching device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3228601A JPH0546503A (en) 1991-08-14 1991-08-14 Switching device

Publications (1)

Publication Number Publication Date
JPH0546503A true JPH0546503A (en) 1993-02-26

Family

ID=16878913

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3228601A Pending JPH0546503A (en) 1991-08-14 1991-08-14 Switching device

Country Status (1)

Country Link
JP (1) JPH0546503A (en)

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