Triggering circuit for a passenger restraint system

Details Triggering circuit for a passenger restraint system Triggering circuit for a passenger restraint system

1997-06-23

1999-02-09

English, Peter C.

Land vehicles

Wheeled

Attachment

280735, 180282, 701 46, B60R 2246, B60R 2248

Patent

active

058684271

ABSTRACT:
A triggering circuit for a passenger restraint system for motor vehicles is provided with at lest one belt tightener for tightening a safety belt associated with a vehicle seat. A triggering circuit evaluates the acceleration signal from an accelerometer and delivers a triggering signal to the belt tightener when a critical impact is detected. An evaluation channel detects a rear-end collision. In the evaluation channel, on the basis of the acceleration signal that appears in the event of a rear-end collision, a travel signal that characterizes backward displacement of the passenger is determined that permits the triggering signal to be output to the belt tightener when a threshold value is exceeded.

REFERENCES:
patent: 4985835 (1991-01-01), Sterler et al.
patent: 5157268 (1992-10-01), Spies et al.
patent: 5326146 (1994-07-01), Takeuchi
patent: 5430649 (1995-07-01), Cashler et al.
patent: 5445413 (1995-08-01), Rudolf et al.
patent: 5461567 (1995-10-01), Kelley et al.
patent: 5540461 (1996-07-01), Nitschke et al.

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