JP3116476B2 - Redundant switching method - Google Patents
Redundant switching methodInfo
- Publication number
- JP3116476B2 JP3116476B2 JP03308655A JP30865591A JP3116476B2 JP 3116476 B2 JP3116476 B2 JP 3116476B2 JP 03308655 A JP03308655 A JP 03308655A JP 30865591 A JP30865591 A JP 30865591A JP 3116476 B2 JP3116476 B2 JP 3116476B2
- Authority
- JP
- Japan
- Prior art keywords
- central processing
- processing unit
- centralized monitoring
- information
- downlink
- 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.)
- Expired - Fee Related
Links
Landscapes
- Detection And Prevention Of Errors In Transmission (AREA)
- Small-Scale Networks (AREA)
- Selective Calling Equipment (AREA)
- Retry When Errors Occur (AREA)
- Hardware Redundancy (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は二重化切替え方式に関
し、特に集中監視システムにおける集中監視局の中央処
理部の二重化切替え方式に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a duplex switching system, and more particularly to a duplex switching system for a central processing unit of a centralized monitoring station in a centralized monitoring system.
【０００２】[0002]
【従来の技術】従来、この種の二重化切替え方式は、予
備系となった中央処理部はメイン系の中央処理部をモニ
ターするだけで自ら信号を出力する構成となっていなか
った。又、相手側障害の判定には図２に示す如く予備
系，メイン系の両系を監視する動作確認部２１を有して
いて動作確認部２１の判断にて中央処理部の系の切替え
を行っていた。即ち、動作確認部２１は常に中央処理部
と通信を行い、両系の動作状態をチェックし、異常を検
出すると系の切替えを行っていた。2. Description of the Related Art Conventionally, this type of duplex switching system does not have a configuration in which a central processing unit serving as a standby system outputs a signal by only monitoring a central processing unit of a main system. Further, as shown in FIG. 2, an operation check unit 21 for monitoring both the standby system and the main system is provided for the judgment of the other party's fault, and the system switching of the central processing unit is determined by the operation check unit 21. I was going. That is, the operation check unit 21 always communicates with the central processing unit, checks the operation state of both systems, and switches the system when an abnormality is detected.
【０００３】[0003]
【発明が解決しようとする課題】この従来の二重化切替
え方式では、中央処理部の予備系は動作していないの
で、系の切替えが起きた場合処理が中断され、切替え完
了まで時間がかかり、又、動作確認部の動作確認で障害
が発見されると、全系が停止状態になるという問題点が
ある。In this conventional duplex switching system, since the standby system of the central processing unit is not operating, if a system switching occurs, the processing is interrupted, and it takes time to complete the switching. However, if a failure is found in the operation check of the operation check unit, there is a problem that the entire system is stopped.
【０００４】[0004]
【課題を解決するための手段】本発明の二重化切替え方
式は、二重化された第１，第２の中央処理部を備えた集
中監視局が下り回線および上り回線に接続された複数の
被監視局をポーリング方式によって監視する集中監視シ
ステムの二重化切替え方式において、前記集中監視局は
前記第１，第２の中央処理部から送出源を示す送出源情
報を付加した制御情報を前記下り回線へ交互に送出さ
せ、前記被監視局からの前記制御情報に対する前記送出
源情報が付加された応答情報を前記第１，第２の中央処
理部が受信したか受信の有無を前記第１，第２の中央処
理部から受信して前記被監視局または前記第１又は第２
の中央処理部の障害を判定し、前記第１又は第２の中央
処理部の障害の場合に障害のあった中央処理部から前記
下り回線への前記制御情報の送出を停止させる制御手段
を有している。According to the present invention, there is provided a duplex switching system comprising a plurality of monitored stations having a centralized monitoring station having a first and a second central processing unit connected to a downlink and an uplink. In the duplex switching system of the centralized monitoring system for monitoring the data by the polling method, the centralized monitoring station alternately sends control information added with transmission source information indicating a transmission source from the first and second central processing units to the downlink. The first and second central processing units determine whether the first and second central processing units have received response information to which the transmission source information has been added to the control information from the monitored station. Receiving from the processing unit, the monitored station or the first or second
Control means for judging a failure of the central processing unit, and stopping transmission of the control information from the failed central processing unit to the downlink in the case of a failure of the first or second central processing unit. doing.
【０００５】[0005]
【実施例】次に、本発明について図面を参照して説明す
る。Next, the present invention will be described with reference to the drawings.
【０００６】図１は本発明の一実施例を適用する集中監
視システムのブロック図である。FIG. 1 is a block diagram of a centralized monitoring system to which one embodiment of the present invention is applied.
【０００７】図１において、本適用例の集中監視システ
ムは被監視局１１−１〜１１−ｎと、被監視局１１−１
〜１１−ｎを下り回線７、上り回線８によって監視する
集中監視局１とを備えて構成し、集中監視局１は二重化
されたＡ中央処理部２およびＢ中央処理部３と、Ａ中央
処理部２又はＢ中央処理部３からＯＲ回路６を介してポ
ーリング方式で下り回線７へ交互に制御情報を送出さ
せ、又Ａ中央処理部２およびＢ中央処理部３からの制御
情報に対する被監視局１１−１〜１１−ｎからの応答情
報の受信の有無を受信してＡ中央処理部２、Ｂ中央処理
部３又は被監視局１１−１〜１１−ｎの障害を判定する
情報送出制御部５とを有して構成している。In FIG. 1, a centralized monitoring system according to this application example includes monitored stations 11-1 to 11-n and a monitored station 11-1.
To 11-n are provided with a centralized monitoring station 1 for monitoring by a downlink 7 and an uplink 8, and the centralized monitoring station 1 is provided with a duplicated A central processing unit 2 and B central processing unit 3, and an A central processing unit 3. The control information is sent alternately from the unit 2 or the B central processing unit 3 to the downlink 7 in a polling manner via the OR circuit 6 and the monitored station responds to the control information from the A central processing unit 2 and the B central processing unit 3. An information transmission control unit that determines whether a failure has occurred in the A central processing unit 2, the B central processing unit 3, or the monitored stations 11-1 to 11-n by receiving the presence or absence of response information from 11-1 to 11-n. 5.
【０００８】次に、本発明の一実施例の動作を図１に示
す本適用例によって説明する。Next, the operation of one embodiment of the present invention will be described with reference to this application example shown in FIG.
【０００９】集中監視局１内にあるＡ中央処理部２とＢ
中央処理部３は同じ処理を常時実行しており、出力信号
にこの出力信号を送出したのがＡ中央処理部２なのかＢ
中央処理部３なのかわかる情報を付加した出力信号フォ
ーマット９で、情報送出制御部５の制御によって下り回
線７へ交互に制御情報を出力する。A central processing unit 2 and B in the centralized monitoring station 1
The central processing unit 3 always executes the same processing, and it is the central processing unit 2 that sends this output signal to the output signal.
The control information is output to the downlink 7 alternately under the control of the information transmission control unit 5 in an output signal format 9 to which information that indicates whether or not the central processing unit 3 is added.
【００１０】出力信号フォーマット９の制御情報を受け
た被監視局１１−１〜１１−ｎの該当被監視局は今自分
が受けた信号がＡ中央処理部２からならば“Ａ”と、Ｂ
中央処理部２からならば“Ｂ”と応答信号フォーマット
１０の応答信号を上り回線８に返す。Each of the monitored stations 11-1 to 11-n having received the control information of the output signal format 9 outputs "A" if the received signal is from the A central processing unit 2;
If it is from the central processing unit 2, "B" and a response signal of the response signal format 10 are returned to the uplink 8.
【００１１】集中監視局１ではこの応答信号を受け、最
初に“Ａ”が付加された応答ならば次の出力信号はＢ中
央処理部３から出して“Ｂ”が付加された応答ならば、
次の出力信号はＡ中央処理部２から出す処理を行う。The centralized monitoring station 1 receives this response signal, and if the response has "A" added first, the next output signal is output from the B central processing unit 3 and if the response has "B" added,
The next output signal is processed by the A central processing unit 2.
【００１２】もし、Ａ中央処理部２の出した出力信号に
対して予め定められた期間内に応答が無かった場合、Ｂ
中央処理部３がＡ中央処理部２と同じ信号を出力し、そ
れでも応答が無い時は、情報送出制御部５が被監視局側
の障害と判断し、応答のない被監視局への制御情報の送
出を停止させ、Ａ中央処理部２又はＢ中央処理部３に対
し次に被監視局へのポーリングへ移らせる。If there is no response to the output signal output from the central processing unit 2 within a predetermined period,
When the central processing unit 3 outputs the same signal as that of the A central processing unit 2 and there is still no response, the information transmission control unit 5 determines that a failure has occurred on the monitored station side, and the control information to the monitored station that has not responded. Is stopped, and the A central processing unit 2 or the B central processing unit 3 is caused to shift to polling to the next monitored station.
【００１３】又、Ａ中央処理部２の出した信号に対し応
答がなかった場合に、Ｂ中央処理部３の信号に対して正
しく応答が有った時には、Ａ中央処理部２に障害が有っ
たと判断して、情報送出制御部５はＡ中央処理部２に制
御信号を送出せずＡ中央制御部２を系から切り離しＢ中
央処理部３で運用を続ける。When there is no response to the signal output from the A central processing unit 2 and when a correct response is received to the signal from the B central processing unit 3, there is a fault in the A central processing unit 2. As a result, the information transmission control unit 5 does not send a control signal to the A central processing unit 2 and disconnects the A central control unit 2 from the system and continues the operation in the B central processing unit 3.
【００１４】[0014]
【発明の効果】以上説明したように本発明は、二重化さ
れた第１，第２の中央処理部を備えた集中監視局が下り
回線および上り回線に接続されさ複数の被監視局をポー
リング方式によって監視する集中監視システムの二重化
切替え方式において、集中監視局は第１，第２の中央処
理部から送出源を示す送出源情報を付加した制御情報を
下り回線へ交互に送出させ、被監視局からの制御情報に
対する送出源情報が付加された応答情報を第１，第２の
中央処理部が受信したか受信の有無を第１，第２の中央
処理部から受信して被監視局または第１又は第２の中央
処理部の障害を判定し、第１又は第２の中央処理部の障
害の場合に障害のあった中央処理部から下り回線への制
御情報の送出を停止させる制御手段を有することによ
り、障害検出時間及び系の切替え時間を従来より短縮
し、又、障害時に処理を継続しながら系を切替えするこ
とができる効果を有する。As described above, according to the present invention, a centralized monitoring station having duplicated first and second central processing units is connected to a downlink and an uplink to poll a plurality of monitored stations by a polling method. In the redundant switching system of the centralized monitoring system, the centralized monitoring station causes the first and second central processing units to alternately transmit, to the downlink, control information to which transmission source information indicating the transmission source is added. The first and second central processing units receive the response information to which the transmission source information has been added to the control information from the first central processing unit or the presence / absence of the reception from the first and second central processing units. A control means for judging a failure of the first or second central processing unit and stopping transmission of control information from the failed central processing unit to the downlink in the case of a failure of the first or second central processing unit; By having it, the fault detection time and Shorter than conventional switching time of the system, also has an advantage of being able to switch the system while continuing the process at the time of the failure.
【図１】本発明の一実施例を適用する集中監視システム
のブロック図である。FIG. 1 is a block diagram of a centralized monitoring system to which an embodiment of the present invention is applied.
【図２】従来の二重化切替え方式を使用する集中監視シ
ステムのブロック図である。FIG. 2 is a block diagram of a conventional centralized monitoring system using a duplex switching method.
１，１ａ 集中監視局 ２，２ａ Ａ中央処理部 ３，３ａ Ｂ中央処理部 ５ 情報送出制御部 ６ ＯＲ回路 ７ 下り回線 ８ 上り回線 ９ 集中監視局から被監視局への出力信号フォーマッ
ト １０ 被監視局から集中監視局への応答信号フォーマ
ット １１−１〜１１−ｎ 被監視局 ２１ 動作確認部1, 1a Centralized monitoring station 2, 2a A central processing unit 3, 3a B central processing unit 5 Information transmission control unit 6 OR circuit 7 Downlink 8 Uplink 9 Output signal format from central monitoring station to monitored station 10 Monitored Response signal format from station to central monitoring station 11-1 to 11-n Monitored station 21 Operation check unit
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ Ｈ０４Ｑ 9/00 ３１１ Ｈ０４Ｑ 9/00 ３１１Ｍ (58)調査した分野(Int.Cl.7，ＤＢ名) G06F 11/16 - 11/20 G06F 11/14 G06F 13/00 H04B 1/74 H04L 1/22 H04L 11/00 H04Q 9/00 ──────────────────────────────────────────────────続 き Continuation of the front page (51) Int.Cl. 7 identification code FI H04Q 9/00 311 H04Q 9/00 311M (58) Field surveyed (Int.Cl. 7 , DB name) G06F 11/16-11 / 20 G06F 11/14 G06F 13/00 H04B 1/74 H04L 1/22 H04L 11/00 H04Q 9/00
Claims (1)
備えた集中監視局が下り回線および上り回線に接続され
た複数の被監視局をポーリング方式によって監視する集
中監視システムの二重化切替え方式において、前記集中
監視局は前記第１，第２の中央処理部から送出源を示す
送出源情報を付加した制御情報を前記下り回線へ交互に
送出させ、前記被監視局からの前記制御情報に対する前
記送出源情報が付加された応答情報を前記第１，第２の
中央処理部が受信したか受信の有無を前記第１，第２の
中央処理部から受信して前記被監視局または前記第１又
は第２の中央処理部の障害を判定し、前記第１又は第２
の中央処理部の障害の場合に障害のあった中央処理部か
ら前記下り回線への前記制御情報の送出を停止させる制
御手段を有することを特徴とする二重化切替え方式。1. A duplex switching of a centralized monitoring system in which a centralized monitoring station having duplicated first and second central processing units monitors a plurality of monitored stations connected to a downlink and an uplink by a polling method. In the system, the centralized monitoring station causes the first and second central processing units to alternately transmit control information added with transmission source information indicating a transmission source to the downlink, and the control information from the monitored station. The response information to which the transmission source information is added is received by the first and second central processing units from the first and second central processing units to determine whether the first and second central processing units have received the response information. A failure of the first or second central processing unit is determined, and the first or second central processing unit is determined.
And a control means for stopping the transmission of the control information from the failed central processing unit to the downlink when the failure occurs in the central processing unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03308655A JP3116476B2 (en) | 1991-11-25 | 1991-11-25 | Redundant switching method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03308655A JP3116476B2 (en) | 1991-11-25 | 1991-11-25 | Redundant switching method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05250199A JPH05250199A (en) | 1993-09-28 |
| JP3116476B2 true JP3116476B2 (en) | 2000-12-11 |
Family
ID=17983693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP03308655A Expired - Fee Related JP3116476B2 (en) | 1991-11-25 | 1991-11-25 | Redundant switching method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3116476B2 (en) |
-
1991
- 1991-11-25 JP JP03308655A patent/JP3116476B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05250199A (en) | 1993-09-28 |
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