Drive Arrangement for Driving a vehicle Safety Device

摘要

A drive arrangement (1) for driving a vehicle safety device (18) incorporates an input (2) which is connected to an output (9) of an electronic control unit (5). The output (9) of the electronic control unit (5) is an output which is operable to provide a firing signal to activate a pyrotechnic squib in a safety device, such as an airbag module. The drive arrangement (1) incorporates first and second analysers (14, 15) which perform first and second algorithms on a firing signal provided by the electronic control unit (5) to determine that the firing signal would have activated a pyrotechnic squib. The drive arrangement (1) provides an output signal to a safety device (18) if both the first and second analyzers (14, 15) determine that the firing signal would have activated the pyrotechnic squib.

主权项

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; a second analyser operable to perform a second algorithm on the firing signal and to provide a second determination that the firing signal would have activated the pyrotechnic squib; 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.