CONTROL DEVICE
To provide a control device capable of improving the reliability of control by preventing damage to the control device quickly and with minimal effect when a failure occurs, while reducing the number of ports required for an MCU and a processing load.SOLUTION: The control device is provided with an...
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Format: | Patent |
Sprache: | eng ; jpn |
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Zusammenfassung: | To provide a control device capable of improving the reliability of control by preventing damage to the control device quickly and with minimal effect when a failure occurs, while reducing the number of ports required for an MCU and a processing load.SOLUTION: The control device is provided with an MCU (14) and a supervisory control circuit (19) which are interconnected. When the supervisory control circuit (19) detects an abnormality in the MCU (14), the supervisory control circuit (19) initializes the MCU (14) and controls output circuits for driving electrical loads. When the MCU (14) receives failure information from the supervisory control circuit (19), the MCU reads out components affected by the failure indicated by the failure information and the degree of influence from previously stored dependent failure analysis results, and restricts functions of the components.SELECTED DRAWING: Figure 1
【課題】MCUの必要ポートならびに処理負荷を削減しつつ、故障発生に対し迅速かつ最小限の影響で制御装置の損傷を防止して制御の信頼性の向上を実現できる制御装置を提供する。【解決手段】相互に接続されたMCU(14)と監視制御回路(19)を備えた制御装置であり、監視制御回路(19)がMCU(14)の異常を検出したとき、監視制御回路(19)はMCU(14)を初期化するとともに電気負荷を駆動する出力回路を制御し、MCU(14)は、監視制御回路(19)から故障情報を受信したとき、あらかじめ格納された従属故障分析結果から、故障情報が示す故障により影響を受ける構成要素と影響の度合いを読み出し、その構成要素の機能を制限するように構成されている。【選択図】図1 |
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