Acceleration sensing device

Details Acceleration sensing device Acceleration sensing device

1995-11-02

1997-03-25

Oda, Christine K.

Measuring and testing

Speed, velocity, or acceleration

Acceleration determination utilizing inertial element

7351436, G01P 1512

Patent

active

056146736

ABSTRACT:
An acceleration sensing device having a cantilevered acceleration sensing beam mounted at one of its ends on a base mounted on a package substrate. Strain caused by the movement of a weight disposed at a free end of the acceleration sensing beam is detected with a bridge circuit. When the base separates from the package substrate, an abnormal state sensing electrode of the weight comes into electrical contact with the package substrate, which is a ground terminal, so that an output from a differential amplifier of the bridge circuit is fixed to a low (or high) level, warning of the abnormal state.

REFERENCES:
patent: 5018763 (1991-05-01), Okano
patent: 5410915 (1995-05-01), Yamamoto
patent: 5415044 (1995-05-01), Yamamoto
patent: 5460044 (1995-10-01), Yamamoto

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