SYSTEM FOR TRIGGERING A PROTECTING DEVICE

摘要

A system for the connection of an ignition device (3) to a direct current network (2), the ignition device being able to be activated for triggering a safety device (4-5) in an emergency. For example, the safety device can be constituted of a safety belt stretcher or an airbag (5) in a vehicle arranged to be inflated by a gas generator (4) at a certain deceleration detected. According to an embodiment of the invention at least one safety device is connected to the internal network (2) of the vehicle via an electronic unit (1) including at least one acceleration sensor (6) and an arrangement (7) for the generation of a direct current voltage activating the ignition device (3) at a given deceleration, the direct current voltage generated being higher than the internal line voltage. The system is dimensioned such that the direct current network (2) of the vehicle does not have a potential high enough to be able to activate the ignition device.