Operation abnormality monitoring system

動作異常監視システム

Abstract

(57)【要約】 【課題】 被見張制御設備の見張制御用および動作異常 検出用の伝送信号は1本のシリアル伝送ラインを介して 伝送されていたので、動作異常検出用の伝送信号の発生 頻度を多くすると見張制御用の伝送信号の伝送量が制約 を受ける。 【解決手段】 二重系の中央処理装置において、主系中 央処理装置1が伝送可能であるときパルス信号を出力す る伝送可能パルス発生回路15と、中央処理装置に接続 され伝送信号を伝送する主系シリアル伝送ライン4と、 デジタル出力部16に接続され伝送可能信号を伝送する 伝送可能通知ライン8と、入力されたパルス信号に基づ いて主系中央処理装置1の異常を監視するパルス監視回 路36を有する複数のローカル処理装置3とを備えたも のである。
PROBLEM TO BE SOLVED: To correspond to operation abnormality on realtime without restricting the transmission of a transmitting signal for controlling and watching by provid ing two transmission bodies, inputting/outputting the transmitting signal with the first transmission body and inputting a transmission possible signal with the second transmission body. SOLUTION: A main system central processing unit 1 is connected to local processors 3a,..., 3n by the two transmission bodies, that is, a main system serial transmission line 4 and a transmission possible reporting line 8. Then, either one of the transmitting signals, for controlling a control institution to be watched or for watching, is transmitted with the main system serial transmission line 4 and the transmission possible signal for detecting operation abnormality being a communication possible signal is transmitted with the individual line, that is, the communication possible reporting line 8. Therefore, even if the generation frequency of the transmission possible signal for detecting operation abnormality is made to large, the transmission quantity of either one of the transmitting signals, for controlling the control institution to be watched or for watching is not restricted.

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    JP-2009033389-AFebruary 12, 2009Koyo Electronics Ind Co Ltd, 光洋電子工業株式会社Proximity sensor with fault diagnosing function