Force measuring device

Details Force measuring device Force measuring device

1993-10-01

1995-10-03

Chilcot, Jr., Richard E.

Measuring and testing

Speed, velocity, or acceleration

Acceleration determination utilizing inertial element

7351435, G01P 1500

Patent

active

054542669

ABSTRACT:
The device for measuring a force, and notably an inertial force corresponding to an acceleration, comprises a capacitive detector comprising two capacitors, the difference between the capacitances of which is a function of the force measured.
The measuring device further comprises an electronic circuit permitting the creation of an output signal determined by a comparison of the value of the two capacitances. The signal is created in the form of a digital signal having a modulated pulse density.

REFERENCES:
patent: 4930043 (1990-05-01), Wiegand
patent: 5008774 (1991-04-01), Bullis et al.
patent: 5134881 (1992-08-01), Henrion et al.
patent: 5345824 (1994-09-01), Sherman et al.
Sensors and Actuators--A Physical, vol A21, No. 1/3, Feb. 1990, pp. 316-319, Lausanne, CH; S. Suzuik et al. "Semiconductor Capacitance-Type Accelerometer with PWM Electrostatic Servo Technique".

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