JPS5839301A - Signal selection system - Google Patents
Signal selection systemInfo
- Publication number
- JPS5839301A JPS5839301A JP13732281A JP13732281A JPS5839301A JP S5839301 A JPS5839301 A JP S5839301A JP 13732281 A JP13732281 A JP 13732281A JP 13732281 A JP13732281 A JP 13732281A JP S5839301 A JPS5839301 A JP S5839301A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- switching
- plant
- detection signals
- becomes abnormal
- 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
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B9/00—Safety arrangements
- G05B9/02—Safety arrangements electric
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Safety Devices In Control Systems (AREA)
Abstract
Description
【発明の詳細な説明】
この発明は、プラント制御(例えば発電プラント)に於
いてプラント・プロセス量の検出信号の伽頼性を高める
ための信号選択方式に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a signal selection method for increasing the reliability of detection signals of plant process quantities in plant control (for example, power generation plants).
従来この桃の方式として第1図に示すものがあった0図
において(1)〜(4)はプロセス検出部、(6)はプ
ロセス検出部(1)〜1幻の信号の切替え部、(6)は
切替え部flitへ切替え指令を出すスイッチを示す。Conventionally, there was a system as shown in Fig. 1. In Fig. 0, (1) to (4) are process detection sections, (6) is a process detection section (1) to 1 phantom signal switching section, ( 6) indicates a switch that issues a switching command to the switching unit flit.
次に動作について説明する。Next, the operation will be explained.
例えば4つの検出信号(1)〜(4)が信号切替え部(
6)に接続されていて、運転員がプラントの運転状態か
ら判断して適当な検出信号を切替スイッチ(61にて選
択していた。For example, four detection signals (1) to (4) are connected to the signal switching section (
6), and the operator selects an appropriate detection signal using a changeover switch (61) based on the operating state of the plant.
プラントのじよう乱を引き起こす原因として検出部の線
信号による場合が多い。Line signals from the detection unit are often the cause of plant disturbances.
従来はプラント状態が異常になって運転員が気付き、切
替え用スイッチにて正常な信号を選択していた。Previously, when the plant status became abnormal, the operator noticed it and selected a normal signal using a changeover switch.
多くの場合、プラント状態が異常になってから処置して
いては間に合わず、プラント・トリップ即ちプラント停
止に至る。また運転員に対する精神的圧迫も大きい。In many cases, it is not enough to take measures after the plant condition becomes abnormal, resulting in a plant trip, that is, a plant shutdown. There is also great psychological pressure on the operators.
この発明は上記のような従来のものの欠点を除去するた
めになされたもので、+!@転員が操作する切替え用ス
イッチの代わりに・1診断機能をもった信号切替方式を
提供することを目的としている。This invention was made in order to eliminate the drawbacks of the conventional ones as mentioned above, and +! The purpose is to provide a signal switching system with a diagnostic function instead of a switching switch operated by a staff member.
この機能によりプラントが異常状態になる前に異常検出
信号から正常な検出信号へ自動的に切替えることができ
、プラントの安定な制御を可能とスルことができる。し
いてはプラントの梶動率向上につながる。With this function, it is possible to automatically switch from an abnormality detection signal to a normal detection signal before the plant enters an abnormal state, thereby enabling stable control of the plant. This in turn leads to an improvement in the pumping rate of the plant.
この発明の一実施例について説明する。第2図に於いて
(1)〜(4)は複数の検出部、(6)は信号切替部。An embodiment of this invention will be described. In FIG. 2, (1) to (4) are a plurality of detection units, and (6) is a signal switching unit.
(7)は診断機能を有しており複数の信号を相互比較な
どして最・適な信号を選定し、切替信号をイぎ号切替部
t6)へ出す切替診断部である。(7) is a switching diagnostic section which has a diagnostic function, compares a plurality of signals with each other, selects the most suitable signal, and outputs a switching signal to the key switching section t6).
複数の検出信号を信号切替え部(6)へ接続するととも
に切替診断部(7)にも入力する。The plurality of detection signals are connected to the signal switching section (6) and also input to the switching diagnosis section (7).
切袴診断部(7)では常時複数の検出信号を診断し。The cut hakama diagnosis section (7) constantly diagnoses multiple detection signals.
もし現在使用している信号が異常となれば池の最も正常
な信号を選択するように切替指令を信号切替部へ出す。If the currently used signal becomes abnormal, a switching command is sent to the signal switching unit to select the most normal signal.
ここで切替診断部())を具体的に説明するために一例
として第3図にて説明する。第3図は機能を明確にする
ためフローチャート形式で表わしである。Here, in order to specifically explain the switching diagnosis section ()), an example will be described with reference to FIG. FIG. 3 is presented in flowchart form to clarify the functions.
切替診断部()1はプリグフマプルなコンピュータ又は
マイクロプロセッサやアナログ演算回路でも実現可能で
ある0判別方法も対象プラントによシ色々の方法が考え
られる。fた選定方法も平均値えば2番目に高い信号を
選ぶことも可能である。The switching diagnosis section ( ) 1 can be realized by a predefined computer, a microprocessor, or an analog arithmetic circuit. Various methods for determining 0 can be considered depending on the target plant. If the selection method is based on the average value, it is also possible to select the second highest signal.
適用範囲も発?[プラントに限らず一般工業プフントに
も適用可能である。Does the scope of application also apply? [Applicable not only to plants but also to general industrial facilities.]
以上、この発明によれば、複数の検出信号を常時診断し
て、現在使用中の信号が異常になった場合は、正常な信
号へ切替えることによって制御器へ信頼性の高い検出信
号を送ることが可能となシ、その結果安定したプラント
制御が実現できる。よってプラントの稼動率自重を図る
ことができる。As described above, according to the present invention, multiple detection signals are constantly diagnosed, and if the signal currently in use becomes abnormal, it is possible to send a highly reliable detection signal to the controller by switching to a normal signal. As a result, stable plant control can be achieved. Therefore, it is possible to improve the operating rate of the plant.
また1lll!転員の省力化にもなる。1lll again! It also saves labor during transfers.
第1図は従来の信号1択方式を示すブロック図。
第2図はこの発明の一実施例を示すブロック図。
第3図はこの発明の切替え診断部についての機能的−例
を示すフローチャートである。
図において、(])〜(4)は検出信号、(51は切替
え部、(71は切替え診断部
なお図中同一符号は同−又は相当部分を示す。
代理人 葛野信−
第1図
第2図
第3図
pISヨイ轟々うFIG. 1 is a block diagram showing a conventional signal one selection method. FIG. 2 is a block diagram showing one embodiment of the present invention. FIG. 3 is a flowchart illustrating a functional example of the switching diagnostic section of the present invention. In the figure, (]) to (4) are detection signals, (51 is a switching unit, (71 is a switching diagnosis unit), and the same reference numerals in the figure indicate the same or corresponding parts. Agent Makoto Kuzuno - Figure 1, Figure 2 Figure 3 pIS roars
Claims (1)
のにおいて、複数個の入力信号を得ると共に切替診断部
にょシこれら複数の入力信号の中から最適な信号を自動
的に選択して制#器へ出力することを特徴とする信号選
択方式。In a device that detects process copying and sends it as an input signal to one sidecar, the switching diagnosis section obtains multiple input signals and automatically selects the optimal signal from these multiple input signals for control. A signal selection method characterized by outputting to a # device.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13732281A JPS5839301A (en) | 1981-08-31 | 1981-08-31 | Signal selection system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13732281A JPS5839301A (en) | 1981-08-31 | 1981-08-31 | Signal selection system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5839301A true JPS5839301A (en) | 1983-03-08 |
Family
ID=15195965
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13732281A Pending JPS5839301A (en) | 1981-08-31 | 1981-08-31 | Signal selection system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5839301A (en) |
-
1981
- 1981-08-31 JP JP13732281A patent/JPS5839301A/en active Pending
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