Triggering circuit for a crash sensor-controlled protective syst

Details Triggering circuit for a crash sensor-controlled protective syst Triggering circuit for a crash sensor-controlled protective syst

1994-09-12

1996-06-04

Focarino, Margaret A.

Land vehicles

Wheeled

Attachment

180282, 307 101, B60R 2132

Patent

active

055226175

ABSTRACT:
A triggering circuit for a crash sensor-controlled protective system for the occupant of a vehicle includes a firing capacitor being charged to a capacitor voltage by the electrical system of the vehicle before an accident, as an energy source for firing a gas generator, that is for firing an explosive charge or for firing a firing cap of an explosive charge. At least one crash sensor detects the occurrence of the sensor values that trigger the firing and controls the firing of the gas generator by one or more contacts by discharging the firing capacitor. A plurality of firing capacitors which are provided in a switching-over manner are connected in parallel before an accident and then charged to a capacitor voltage corresponding to the voltage of the electrical system of the vehicle and in the case of an accident are connected in series in a low-impedance manner by at least one single contact in such a way that, at least at the start of firing, the instantaneous total voltage through the series connection is greater than the individual capacitor voltages in themselves. The total voltage can be fed to the gas generator in a low-impedance manner by at least one single contact.

REFERENCES:
patent: 4222030 (1980-09-01), Yasui et al.
patent: 4384734 (1983-05-01), Yasui
patent: 4851705 (1989-07-01), Musser et al.
patent: 5068640 (1991-11-01), Burger et al.
patent: 5204547 (1993-04-01), Schumacher et al.
patent: 5320382 (1994-06-01), Goldstein et al.

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