Airbag system using three-dimensional acceleration sensor

Details Airbag system using three-dimensional acceleration sensor Airbag system using three-dimensional acceleration sensor

1995-06-07

1998-01-13

Culbreth, Eric D.

Land vehicles

Wheeled

Attachment

7351432, 3612832, 3612833, B60R 2132

Patent

active

057070776

ABSTRACT:
A three-dimensional acceleration sensor capable of detecting a small acceleration value and even an acceleration value amounting up to 100 G occurring in the event of a collision has a diaphragm for linking a frame and a massive part, and diaphragms and beams for linking the massive part and a central part. These elements are formed by working a single crystalline silicon plate. Gaps between the massive part and opposing electrodes are changed by acceleration applied to the massive part. A circuit connected to terminals detects the changes in gaps as changes in capacitances and determines direction and level of the applied acceleration.

REFERENCES:
patent: 4950914 (1990-08-01), Kurihara et al.
patent: 5101669 (1992-04-01), Holm-Kennedy et al.
patent: 5151763 (1992-09-01), Marek et al.

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