PROBLEM TO BE SOLVED: To provide a technique for an electric power unit in which a common power supply circuit supplies electric power to a main microcomputer and a sensor, the technique being configured to securely supply power to the main microcomputer even in a case where a power failure occurred between the main microcomputer/the sensor and the common power supply circuit.SOLUTION: A common power supply circuit 6 supplies electric power to a main microcomputer 11 and a sensor 15. A monitoring microcomputer 12 acquires an output voltage of the common power supply circuit 6. A first switching circuit 9 connects or disconnects the common power supply circuit 6 with or from the main microcomputer 11 and the sensor 15. A second switching circuit 10 connects or disconnects the main microcomputer 11 with or from a communication power supply circuit 7. If the monitoring microcomputer 12 detects on the basis of the results it has acquired, that any abnormality occurred in the system of the common power supply circuit 6, the first switching circuit 9 disconnects the common power supply circuit 6 from the main microcomputer 11 and the sensor 15, and the second switching circuit 10 connects the main microcomputer 11 with the communication power supply circuit 7.SELECTED DRAWING: Figure 1

    【課題】共通電源回路がメインマイコンおよびセンサに電力を供給する電源装置において、メインマイコンおよびセンサと共通電源回路との間で電源異常を生じた場合にメインマイコンへの給電を確保する技術を提供する。【解決手段】共通電源回路6は、メインマイコン11とセンサ15とに電力を供給する。監視マイコン12は、共通電源回路6の出力電圧を取得する。第1切替回路9は、メインマイコン11およびセンサ15と、共通電源回路6とを接続または遮断する。第2切替回路10は、メインマイコン11と通信用電源回路7とを接続または遮断する。監視マイコン12の取得結果から共通電源回路6の系統に異常が生じたことが検出されると、第1切替回路9がメインマイコン11およびセンサ15と、共通電源回路6とを遮断し、第2切替回路10がメインマイコン11と通信用電源回路7とを接続する。【選択図】図1


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    Title :

    ELECTRIC POWER UNIT


    Additional title:

    電源装置


    Contributors:
    MAEDA NAOKI (author)

    Publication date :

    2016-07-14


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR



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