To provide an electronic control unit and an abnormality diagnosis device that have a simple circuit configuration, are inexpensive, and can detect and protect the presence or absence of a short circuit in the electronic control unit.SOLUTION: An electronic control unit 20 includes a diagnostic signal output circuit 28 that outputs an abnormal partial voltage Vda1 to an abnormal partial voltage Vda4 as the abnormal voltage indicating that a short circuit has occurred between at least two voltage stages of operation voltage V1 and operation voltage V2 between an input port 20a and an output port 20b. In an abnormality diagnosis device 10, an operation diagnosis circuit 12 outputs a power cutoff signal Sd to a power supply circuit 11 in the case of receiving a voltage abnormality signal Se which represents the abnormal partial voltage Vda1 to the abnormal partial voltage Vda4 being abnormal voltages from the diagnostic signal output circuit 28 as an output circuit. When the power cutoff signal Sd is input from the operation diagnosis circuit 12, the power supply circuit 11 shuts off the power supply to the electronic control unit 20.SELECTED DRAWING: Figure 2

    【課題】回路構成が簡単で安価であり、電子制御ユニットにおける短絡の有無を検知して保護することが可能な電子制御ユニット及び異常診断装置を提供すること。【解決手段】電子制御ユニット20は、入力ポート20aと、出力ポート20bと、の間に、作動電圧V1〜作動電圧V2のうちの少なくとも二つの電圧段の間で短絡が生じたことを表す異常電圧としての異常分圧Vda1〜異常分圧Vda4を出力する診断用信号出力回路28を備えている。そして、異常診断装置10において、作動診断回路12は、出力回路としての診断用信号出力回路28から異常電圧である異常分圧Vda1〜異常分圧Vda4を表す電圧異常信号Seを入力した場合、電力遮断信号Sdを電力供給回路11に出力し、電力供給回路11は、作動診断回路12から電力遮断信号Sdを入力した場合、電力を電子制御ユニット20に供給することを遮断する。【選択図】図2


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    Title :

    ELECTRONIC CONTROL UNIT AND ABNORMALITY DIAGNOSTIC DEVICE OF ELECTRONIC CONTROL UNIT


    Additional title:

    電子制御ユニット及び電子制御ユニットの異常診断装置


    Contributors:
    XIE CHUAN (author)

    Publication date :

    2019-07-04


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR



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