Abstract: An airbag control unit including two, independent trigger control paths that operate sets of first and second switches placed in series with a power source, sets of trigger outputs, and a ground. Each trigger control path is capable of detecting a shock and determining if the shock is a crash-level shock. Each trigger control path outputs a trigger signal to a switch when a crash-level shock is detected and the trigger control path is armed. Current is only supplied to the trigger output if both trigger control paths sense a crash-level shock and are armed. Upon sensing a shock, each trigger control path can power a power hold element that provides temporary power to the trigger control paths long enough to process the shock signals and generate any necessary trigger signals.

Abstract: An airbag control unit including two, independent trigger control paths that operate sets of first and second switches placed in series with a power source, sets of trigger outputs, and a ground. Each trigger control path is capable of detecting a shock and determining if the shock is a crash-level shock. Each trigger control path outputs a trigger signal to a switch when a crash-level shock is detected and the trigger control path is armed. Current is only supplied to the trigger output if both trigger control paths sense a crash-level shock and are armed. Upon sensing a shock, each trigger control path can power a power hold element that provides temporary power to the trigger control paths long enough to process the shock signals and generate any necessary trigger signals.