Acceleration detector

Details Acceleration detector Acceleration detector

1991-04-26

1993-08-31

Williams, Hezron E.

Measuring and testing

Speed, velocity, or acceleration

Acceleration determination utilizing inertial element

310329, 310324, 310348, H01L 4108

Patent

active

052398692

ABSTRACT:
An acceleration detector comprising a housing adapted to be rigidly secured to an object whose acceleration is to be detected and a transducer assembly disposed within the housing for detecting the acceleration of the housing. The transducer assembly comprises a disc-shaped diaphragm having a circular central region flexible in response to the acceleration of the housing. A disc-shaped piezoelectric element is attached to the central region of the diaphragm for generating a signal representative of the acceleration of the housing. Positioning means are disposed on the diaphragm and the piezoelectric element for positioning the piezoelectric element relative to the central region of the diaphragm. The positioning means may comprise a projection disposed on the diaphragm and engageable with the piezoelectric element. The projection may be disposed at the center of the diaphragm and the piezoelectric element may have a central hole engageable with the positioning projection. The projection may be disposed on the diaphragm and engageable with an outer peripheral edge of the piezoelectric element.

REFERENCES:
patent: 4193647 (1980-03-01), Guess et al.
patent: 4630465 (1986-12-01), Hattou
patent: 4658650 (1987-04-01), Yorinaga et al.
patent: 4704894 (1987-11-01), Inuzuka et al.
patent: 4727279 (1988-02-01), Peng
patent: 5053671 (1991-10-01), Kobayashi et al.
patent: 5118981 (1992-06-01), Kobayashi et al.

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