Patent ID: 9561767
Date: 2017-02-07
CPC Classifications: B60R

Claim:
1. A drive arrangement for driving a vehicle safety device, the arrangement comprising: an input operable to receive a firing signal, the firing signal being suitable for activating a pyrotechnic squib; a first analyser operable to perform a first algorithm on the firing signal and to provide a first determination that the firing signal would have activated the pyrotechnic squib, the first determination being based on a plurality of counters of firing signal values; a second analyser operable to perform a second algorithm on the firing signal different than the first algorithm and to provide a second determination that the firing signal would have activated the pyrotechnic squib, the second determination being based on an integral of the firing signal values over time; a drive arrangement output connected to the first and the second analysers, the drive arrangement output providing an output signal if both the first and the second analysers determine that the firing signal would have activated the pyrotechnic squib, the drive arrangement output signal being suitable for activating the vehicle safety device.