摘要 |
PURPOSE: To provide an occupant crash protection, in which not only the capacity but the internal resistance of a backup condenser can easily be diagnosed. CONSTITUTION: An occupant crash protection is provided with a backup condenser (C), which stores electric energy supplied from a car-mounted battery and which supplies this stored electric energy to a working circuit of an accupant protecting means when a car is crashed. This occupant crash protection is also provided with a discharging means 23, which discharges the backup condenser (C), and abnormality detecting means 11 to 14, which detect the abnormality in the capacity (C0 ) and/or internal resistance (R) of the backup condenser (C), based on the electric energy that is discharged from the backup condenser (C) during the discharge.
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