Method for initiation of protecting device for occupants of vehicle, comprises use of differences in voltage between different units and comparison with predetermined threshold values

摘要

The method includes the determination of the difference in voltage (V1-Vout1) between the source of energy (3) and its connection (Out1) to the ignition device (1) and the difference in voltage (Vout1-V0) between the connection (Out1) to the ignition device (1) and a reference potential (V0). If the values exceed an upper threshold value the power transistors (T1,T2) are blocked or adjusted to a predetermined limit of voltage below the limits for a normal use.