To provide a reset circuit and a reset method which can prevent data damage of a removable memory and enable appropriate reset processing.SOLUTION: A reset circuit of a control device in a railway vehicle comprises: a device power supply; a device power voltage reduction detection unit which detects voltage reduction of the device power supply; a backup power source unit which generates a backup power source through the device power supply; a removable memory; a control unit which controls access to the removable memory; a removable memory power control unit; a backup power voltage reduction detection unit which detects voltage reduction of the backup power source unit; a switch unit for backup power source detection which lies between the backup power source unit and the backup power voltage reduction detection unit; a reset flag unit which stores a reset state of the device power supply; and a reset mask unit which controls the switch unit for backup power source detection through a flag condition signal from the reset flag unit and a mask control signal from the control unit.SELECTED DRAWING: Figure 1

    【課題】リムーバブルメモリーのデータ破損を防止し、適切なリセット処理を可能とするリセット回路及びリセット方法を提供することを目的とする。【解決手段】装置電源と、前記装置電源の電圧低下を検知する装置電源電圧低下検知部と、前記装置電源からバックアップ電源を生成するバックアップ電源部と、リムーバブルメモリーと、前記リムーバブルメモリーのアクセスを制御する制御部と、リムーバブルメモリー電源制御部と、前記バックアップ電源部の電圧低下を検知するバックアップ電源電圧低下検知部と、前記バックアップ電源部と前記バックアップ電源電圧低下検知部との間に介在するバックアップ電源検知用スイッチ部と、前記装置電源のリセットの状態を記憶するリセットフラグ部と、前記リセットフラグ部からのフラグ状態信号と前記制御部からのマスク制御信号により前記バックアップ電源検知用スイッチ部のスイッチを制御するリセットマスク部とを備える。【選択図】図1


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    Title :

    RESET CIRCUIT OF CONTROL DEVICE IN RAILWAY VEHICLE AND RESET METHOD


    Additional title:

    鉄道車上制御装置のリセット回路及びリセット方法


    Contributors:

    Publication date :

    2024-10-15


    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 / G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung



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