System for controlling safety device for vehicle

Details System for controlling safety device for vehicle System for controlling safety device for vehicle

1994-05-03

1995-07-11

Tyson, Karin L.

Land vehicles

Wheeled

Attachment

307 101, B60R 2116

Patent

active

054314410

ABSTRACT:
A control system comprises an acceleration sensor for detecting an acceleration of a vehicle, an integral circuit for integrating a signal from the acceleration sensor, and a collision judgment circuit for comparing the integral value with a trigger threshold level and outputs a trigger signal when the integral value, which is increased in a decelerating direction, exceeds the trigger threshold level. A drive circuit of the control system includes an activator of the safety device for a vehicle, and a switching element which is connected to the activator in series and turned on in response to the trigger signal. The control system further comprises a band-pass filter for allowing passage of comparatively high particular frequency band components contained in the acceleration signal, and an adjustment circuit for adjusting the trigger threshold level based on the acceleration components which have passed the band-pass filter.

REFERENCES:
patent: 5189311 (1993-02-01), Moriyama
patent: 5208484 (1993-05-01), Okano et al.
patent: 5262949 (1993-11-01), Okano et al.
patent: 5369305 (1994-11-01), Duhan et al.

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