PROBLEM TO BE SOLVED: To provide an automobile electronic control device capable of writing, as backup data into a nonvolatile memory, at least information that abnormality occurs in a computer even if initialization is executed due to the abnormality in the computer.SOLUTION: A sub-microcomputer monitors a function state of a ROM built-in main microcomputer for controlling an engine, halts the main microcomputer to execute initialization when detecting that abnormality occurs in the main microcomputer (refer to time points t1 and t2). The sub-microcomputer causes the main microcomputer to be halted and to execute initialization, thereafter, causes the main microcomputer to compulsory start (refer to a time point t3), automatically rewrites information of a RAM function state flag to a set value indicating that the abnormality occurs in the main microcomputer, and writes the information as backup data in an EEPROM (refer to time points t3 and t4).SELECTED DRAWING: Figure 3

    【課題】コンピュータの異常により初期化が行われても、少なくともコンピュータに異常が発生したという情報をバックアップデータとして不揮発性メモリに書き込むことができる自動車用電子制御装置を提供する。【解決手段】サブマイコンは、エンジンを制御するROM内蔵メインマイコンの機能状態を監視し、メインマイコンに異常が発生したことを検知したときにメインマイコンを停止させて初期化を行わせる(時刻t1〜t2参照)。サブマイコンは、メインマイコンを停止させて初期化を行わせた後に、メインマイコンを強制的に起動させて(時刻t3参照)、RAMの機能状態フラグの情報を、メインマイコンに異常が発生したという設定値に自動的に書き換え、EEPROMにバックアップデータとして書き込ませる(時刻t3〜t4参照)。【選択図】図3


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    Title :

    AUTOMOBILE ELECTRONIC CONTROL DEVICE


    Additional title:

    自動車用電子制御装置


    Contributors:

    Publication date :

    2018-10-18


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / F02D CONTROLLING COMBUSTION ENGINES , Steuern oder Regeln von Brennkraftmaschinen



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