JPH036741A - Data output device for duplex system - Google Patents
Data output device for duplex systemInfo
- Publication number
- JPH036741A JPH036741A JP1142613A JP14261389A JPH036741A JP H036741 A JPH036741 A JP H036741A JP 1142613 A JP1142613 A JP 1142613A JP 14261389 A JP14261389 A JP 14261389A JP H036741 A JPH036741 A JP H036741A
- Authority
- JP
- Japan
- Prior art keywords
- control calculation
- calculation unit
- output
- selection command
- control
- 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
Landscapes
- Hardware Redundancy (AREA)
- Debugging And Monitoring (AREA)
- Multi Processors (AREA)
Abstract
Description
本発明は稼動系と待機系の２つの制御演算装置を備えた
二重化システムにおける、稼動系の制御演算装置の出力
データを選択して外部に出力するデータ出力装置に関す
るもので、
特に確実に正しい出力データを選択し得る機能を備えた
二重化システムのデータ出力装置に関する。
なお以下各図において同一の符号は同一もしくは相等部
分を示す。The present invention relates to a data output device that selects and outputs the output data of the active control unit in a redundant system equipped with two control units, an active system and a standby system, and particularly ensures correct output. The present invention relates to a data output device for a duplex system having a function of selecting data. In the following figures, the same reference numerals indicate the same or equivalent parts.
第３図はこの種の二重化システムの従来の構成例を示す
。同図において１および２は共に通信回線４に接続され
二重化システムを構成する制御演算部で、この制御演算
部１，２のうち一方が稼動系、他方が待機系となる。こ
こで稼動系は制？１１権を持っており、待機系は稼動系
をバックアンプする形で動作している。３は出力部で、
前記２つの制御演算部１．２の演算結果のうち、制御権
のある方の制御演算部の演算結果を出力する機能を持い
ま、制御演算部１を稼動系、制御演算部２を待機系とす
ると、出力部３が制御演算部を選択する従来の方式では
、稼動系の制御演算部１が出力部３に対して制御演算部
選択指令９を伝送回線５を介して送り、出力部３はその
選択指令９によって稼動系の出力データ１１を出力デー
タ１３として外部へ出力していた。また、制御演算部の
切換えが生じた場合においては、稼動系の制御演算部１
は制御演算部選択指令９をオフして待機系となり、他方
、待機系の制御演算部２は、制御演算部選択指令１０を
オンして稼動系となるようにしていた。FIG. 3 shows an example of a conventional configuration of this type of duplex system. In the figure, reference numerals 1 and 2 are control calculation units that are both connected to the communication line 4 and constitute a duplex system, and one of the control calculation units 1 and 2 is an active system, and the other is a standby system. Is the operational system restricted here? The standby system operates as a backup amplifier for the active system. 3 is the output section,
Among the calculation results of the two control calculation units 1.2, the control calculation unit 1 has the function of outputting the calculation results of the control calculation unit that has control authority. Then, in the conventional method in which the output unit 3 selects the control calculation unit, the control calculation unit 1 of the operating system sends the control calculation unit selection command 9 to the output unit 3 via the transmission line 5, In accordance with the selection command 9, the output data 11 of the operating system is outputted as output data 13 to the outside. In addition, when switching of the control calculation unit occurs, the control calculation unit 1 of the operating system
The control calculation unit 2 turns off the control calculation unit selection command 9 to become a standby system, and on the other hand, the control calculation unit 2 in the standby system turns on the control calculation unit selection command 10 to become an active system.
しかしながらこのような従来の方式では以下の問題があ
った。
いま仮に制御演算部１を稼動系、制御演算部２を待機系
としたとき、稼動系の制御演算部１または伝送回線５に
何らかの故障が発生すると、制御演算部１は通信回線４
を介して待機系の制御演算部２に対し自局に故障が発生
した旨の信号を送り、これにより制御権が待機系の制御
演算部２に移行する。従って制御演算部２は稼動系とし
て動作し、制御演算部選択指令１０を出力部３へ与える
。しかしこの時、元の稼動系の制御演算部１の制御演算
部選択指令９をオフさせる機能が働かず、制御演算部選
択指令９が残留したままだとすると、現在の稼動系（元
の待機系）からも制御演算部選択指令１０が送られるた
め、出力部３には両系（稼動系。
待機系）の制御演算部選択指令がセットされてしまい、
切換え動作が正常に行えなくなる。その結果、故障が発
生している元の稼動系（即ち制御演算部１）の演算結果
を出力してしまうことがある。
そこで本発明は上記の問題を解消するため、出力部が稼
動系の制御演算部から送られてくる制御演算部選択指令
による判断に加え、制御演算部から出力部へデータが送
られてくる動作そのものが正常に行われているか否かを
監視して、稼動系の制御演算部を選択する二重化システ
ムのデータ出力装置を従供することを課題とする。However, such conventional methods have the following problems. Now, suppose that the control calculation unit 1 is in the active system and the control calculation unit 2 is in the standby system, and if some kind of failure occurs in the control calculation unit 1 or the transmission line 5 in the active system, the control calculation unit 1 will switch to the communication line 4.
A signal to the effect that a failure has occurred in the own station is sent to the standby system control calculation unit 2 via the standby system control calculation unit 2, thereby transferring control authority to the standby system control calculation unit 2. Therefore, the control calculation unit 2 operates as an operating system and provides the control calculation unit selection command 10 to the output unit 3. However, at this time, if the function to turn off the control calculation unit selection command 9 of the control calculation unit 1 of the original operating system does not work and the control calculation unit selection command 9 remains, the current operation system (original standby system) Since the control calculation unit selection command 10 is also sent from the output unit 3, the control calculation unit selection command for both systems (active system and standby system) is set.
Switching operation cannot be performed normally. As a result, the calculation result of the original operating system in which the failure has occurred (ie, the control calculation unit 1) may be output. Therefore, in order to solve the above problems, the present invention has been developed so that the output section performs an operation in which data is sent from the control calculation section to the output section in addition to the judgment based on the control calculation section selection command sent from the control calculation section of the operating system. An object of the present invention is to provide a data output device for a redundant system that monitors whether or not it is operating normally and selects an operating system control calculation section.
前記の課題を解決するために本発明においては、ｒ一方
が稼動系、他方が待機系として動作する２つの制御演算
装置（制御演算部１．２など）、この２つの制御演算装
置からそれぞれ出力データ（１１，１２など）と、当該
の制御演算装置が稼動系であることを示す選択指令（９
，１０など）とを人力し、前記２つの出力データのうち
現に選択指令を出力している前記制御演算装置の出力デ
ータを選択して外部に（、出力データ１３などとして）
出力するデータ出力装置（出力部３など）、を備えた二
重化システムにおいて、
前記データ出力装置は、前記の各制御演算装置の出力デ
ータを監視して（得られる状態監視情報７．８などを介
して）、それぞれの制御演算装置が正常であるか否かを
判別し、この判別によって正常と判別された前記制御演
算装置の選択指令のみを有効とするものであるｊように
するものとする。In order to solve the above problems, the present invention provides two control calculation devices (such as control calculation unit 1.2), one of which operates as an active system and the other as a standby system, and outputs from these two control calculation devices, respectively. data (11, 12, etc.) and a selection command (9
, 10, etc.), and selects the output data of the control arithmetic unit that is currently outputting the selection command from the two output data and outputs it externally (as output data 13, etc.).
In a duplex system equipped with a data output device (such as the output unit 3) that outputs data, the data output device monitors the output data of each of the control calculation devices (via the obtained status monitoring information 7.8, etc.). ), it is determined whether each control arithmetic device is normal or not, and only the selection command of the control arithmetic device determined to be normal is made valid by this determination.
本発明はデータ出力装置としての出力部が制御演算部選
択指令に加えて制御演算装置としての制御演算部の状態
監視情報を用いることで、出力部による稼動系制御演算
部の選択をより信頼度高く正確に行うようにしたもので
ある。In the present invention, the output section as a data output device uses the status monitoring information of the control computing section as the control computing device in addition to the control computing section selection command, so that the selection of the operating system control computing section by the output section can be made more reliable. It was designed to be done highly and accurately.
以下第１図および第２図に基づいて本発明の詳細な説明
する。第１図は本発明の一実施例としての構成を示すブ
ロック図で第３図に対応するものである。第１図では第
３図に対し出力部３に状態監視情報７，８が付加されて
いる。ここで状態監視情報７は制御演算部１から出力部
３へ送られて来る出力データ１１を監視して得られる情
報で、制御演算部１および伝送回線５が正常動作してい
るか否かを示す情報であり、状態監視情報８は制御演算
部２から出力部３へ送られて来る出力データ１２を監視
して得られる情報で、制御演算部２および伝送回線６が
正常動作しているか否かを示す情報である。
いま制御演算部１が稼動系、制御演算部２が待機系とし
て正常に動作している場合、両系１，２から正常な状態
監視情報７が得られており、また制御演算部選択指令は
制御演算部１がら送られてくる制御Ｂ演算部選択指令９
のみである。このとき出力部３は状態監視情報７汗暗が
正常で、尚がっ、制御演算部選択指令９を出力している
制御演算部１の出力データ１１を選択している。
次に制御演算部ｌに故障が発生すると、制御権は制御演
算部２に移行するが、制御演算部ｌの制御演算部選択指
令９をオフする機能が正常に動作せず、制御演算部選択
指令９は残留したままになったとする。この状態で制御
演算部選択指令１ｏが発せられたとすると、制御演算部
ｌの状態監視情報７は既に異常となっており、他方、状
態監視情報８は正常であるので、出力部３は制御演算部
２の出力データ１２を選択する。
以上のような出力データ１１．１２の選択は詳しくは第
２図の流れ図のような処理を出力部３に行わせることに
よって実現させる。
次に第１図を参照しつつ第２図を説明する。なお以上先
に囲まれた数字は第２図中のステップ番号である。
まず■で制御演算部１の状態監視情報７を判断し、異常
なら■で制御演算部２の状態監視情報８を判断し、異常
時には■で出力部３に見合った異常処理（本発明とは無
関係）を行う。■で状態監視情報８が正常な時には■で
制御演算部２の選択指令１０の有無をチエツクし、無し
なら［相］で前回の制御演算部選択情報を維持し、有り
なら■で制御演算部２の出力データ１２を選択する。
もし■で制御演算部１の状態監視情報７が正常なら、■
で制御演算部２の状態監視情報８を判断し、異常なら■
で制御演算部Ｉの選択指令９の有無を判断し、無しなら
［相］で前回の制御７Ｍ算部選択情報を維持し、有りな
ら■で制御演算部１の出力データ１１を選択する。
前記■の状態監視情報８の判断において正常時には■に
進む。■では制御演算部１の制御演算部選択指令９と制
御演算部２の制御演算部選択指令１０との２つを読込み
、どちらの指令も有る場合、あるいはどちらの指令も無
い場合は［相］で前回の制御演算部選択情報を変更せず
現状維持とする。他方、どちらか一方の指令のみが有る
場合には■へ進む。■では制御演算部１の制御演算部選
択指令９の有無を判断し、指令の無い場合には＠で制御
演算部２の出力データ１２を選択し、指令の有る場合に
は■で制御演算部１の出力データ１１を選択する。The present invention will be explained in detail below based on FIGS. 1 and 2. FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention, and corresponds to FIG. 3. In FIG. In FIG. 1, status monitoring information 7, 8 is added to the output section 3 compared to FIG. 3. Here, the status monitoring information 7 is information obtained by monitoring the output data 11 sent from the control calculation unit 1 to the output unit 3, and indicates whether the control calculation unit 1 and the transmission line 5 are operating normally. The status monitoring information 8 is information obtained by monitoring the output data 12 sent from the control calculation unit 2 to the output unit 3, and indicates whether the control calculation unit 2 and the transmission line 6 are operating normally. This is information indicating. If the control calculation unit 1 is currently operating normally as the active system and the control calculation unit 2 is the standby system, normal status monitoring information 7 is obtained from both systems 1 and 2, and the control calculation unit selection command is Control B calculation unit selection command 9 sent from control calculation unit 1
Only. At this time, the output unit 3 selects the output data 11 of the control calculation unit 1 which is normal in the status monitoring information 7 and which outputs the control calculation unit selection command 9. Next, when a failure occurs in the control calculation section 1, control authority is transferred to the control calculation section 2, but the function of turning off the control calculation section selection command 9 of the control calculation section 1 does not operate normally, and the control authority is transferred to the control calculation section 2. It is assumed that Directive 9 remains. If the control calculation unit selection command 1o is issued in this state, the status monitoring information 7 of the control calculation unit l is already abnormal, while the status monitoring information 8 is normal, so the output unit 3 is Output data 12 of section 2 is selected. More specifically, the selection of the output data 11 and 12 as described above is realized by causing the output section 3 to perform a process as shown in the flowchart of FIG. Next, FIG. 2 will be explained with reference to FIG. 1. The numbers enclosed above are step numbers in FIG. 2. First, the status monitoring information 7 of the control calculation unit 1 is determined in ■.If there is an abnormality, the status monitoring information 8 of the control calculation unit 2 is determined in (irrelevant). When the status monitoring information 8 is normal in (■), check the presence or absence of the selection command 10 for the control calculation unit 2 in (■), and if there is no selection command 10, maintain the previous control calculation unit selection information in [phase], and if there is, in (■) the control calculation unit 2 output data 12 is selected. If the status monitoring information 7 of the control calculation unit 1 is normal in ■, then ■
Determine the status monitoring information 8 of the control calculation unit 2, and if there is an abnormality,
The presence or absence of the selection command 9 of the control calculation unit I is determined. If there is no selection command 9, the previous control 7M calculation unit selection information is maintained with [phase], and if it is present, the output data 11 of the control calculation unit 1 is selected with . If the judgment of the status monitoring information 8 in (2) is normal, the process proceeds to (2). In (2), the control calculation unit selection command 9 of the control calculation unit 1 and the control calculation unit selection command 10 of the control calculation unit 2 are read, and if either command is present or if neither command is present, [phase] The previous control calculation unit selection information is not changed and the current status is maintained. On the other hand, if there is only one command, proceed to (2). In ■, the presence or absence of the control calculation unit selection command 9 of the control calculation unit 1 is determined. If there is no command, select the output data 12 of the control calculation unit 2 with @, and if there is a command, use ■ to select the control calculation unit 1 output data 11 is selected.
本発明によれば制御濤算部が稼動系と待機系とに二重化
されたシステムの出力部が制御演算部の選択を制御演算
部選択指令と状態監視情報との両者を調べて行うように
したので、二重化された制御演算部がどのような切換ね
り状態を示しても、出力部は正確に制御演算部を選択で
きる。According to the present invention, the output section of the system in which the control calculation section is duplicated in the active system and the standby system selects the control calculation section by examining both the control calculation section selection command and the status monitoring information. Therefore, no matter what kind of switching state the duplicated control calculation section exhibits, the output section can accurately select the control calculation section.
第１図は本発明の一実施例としての構成を示すフロック
図。
第２図は第１図の動作説明用のフローチャート。
第３図は第１図に対応する従来のブロック図である。
１．２：制御演算部、３：出力部、４：通信回線、５．
６：伝送回線、７，８：状態監視情報、９．１０：制御
演算部選択指令、ＬＬ１２，１３ ：出力１４１回（
泉−
４FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention. FIG. 2 is a flowchart for explaining the operation of FIG. 1. FIG. 3 is a conventional block diagram corresponding to FIG. 1. 1.2: Control calculation section, 3: Output section, 4: Communication line, 5.
6: Transmission line, 7, 8: Status monitoring information, 9.10: Control calculation unit selection command, LL12, 13: Output 141 times (
Izumi-4
Claims (1)
制御演算装置、 この２つの制御演算装置から出力データと、当該の制御
演算装置が稼動系であることを示す選択指令とを入力し
、前記２つの出力データのうち現に選択指令を出力して
いる前記制御演算装置の出力データを選択して外部に出
力するデータ出力装置、を備えた二重化システムにおい
て、 前記データ出力装置は、前記の各制御演算装置の出力デ
ータを監視して、それぞれの制御演算装置が正常である
か否かを判別し、この判別によって正常と判別された前
記制御演算装置の選択指令のみを有効とするものである
ことを特徴とする二重化システムのデータ出力装置。[Claims] 1) Two control calculation devices, one of which operates as an active system and the other as a standby system, output data from these two control calculation devices and an indication that the control calculation device concerned is an active system. a data output device that inputs a selection command, selects the output data of the control calculation device that is currently outputting the selection command from the two output data, and outputs it to the outside. The output device monitors the output data of each control calculation device, determines whether each control calculation device is normal or not, and issues a selection command only to the control calculation device determined to be normal by this determination. A data output device for a redundant system, characterized in that the data output device is capable of validating the following.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1142613A JP2564397B2 (en) | 1989-06-05 | 1989-06-05 | Redundant system data output device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1142613A JP2564397B2 (en) | 1989-06-05 | 1989-06-05 | Redundant system data output device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH036741A true JPH036741A (en) | 1991-01-14 |
| JP2564397B2 JP2564397B2 (en) | 1996-12-18 |
Family
ID=15319402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1142613A Expired - Lifetime JP2564397B2 (en) | 1989-06-05 | 1989-06-05 | Redundant system data output device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2564397B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6226702B1 (en) | 1998-03-05 | 2001-05-01 | Nec Corporation | Bus control apparatus using plural allocation protocols and responsive to device bus request activity |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61134846A (en) * | 1984-12-04 | 1986-06-21 | Omron Tateisi Electronics Co | Electronic computer system |
-
1989
- 1989-06-05 JP JP1142613A patent/JP2564397B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61134846A (en) * | 1984-12-04 | 1986-06-21 | Omron Tateisi Electronics Co | Electronic computer system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6226702B1 (en) | 1998-03-05 | 2001-05-01 | Nec Corporation | Bus control apparatus using plural allocation protocols and responsive to device bus request activity |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2564397B2 (en) | 1996-12-18 |
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