Accelerometer with reduced extraneous vibrations owing to...

Details Accelerometer with reduced extraneous vibrations owing to... Accelerometer with reduced extraneous vibrations owing to...

2004-08-11

2009-06-30

Kwok, Helen C. (Department: 2856)

Measuring and testing

Speed, velocity, or acceleration

Acceleration determination utilizing inertial element

C073S514320

Reexamination Certificate

active

07552638

ABSTRACT:
An accelerometer uses variations in capacitance to detect and measure the movement of a moving mass in relation to a fixed part. The accelerometer comprises a first series of electrodes, which are solidly connected to the mass and which are interdigitated with a second series of electrodes. The second series of electrodes are solidly connected to the fixed part. The accelerometer further comprises an electronic circuit which: detects the variation in at least one capacitance between the moving mass and the fixed part, in the form of a moving mass displacement indicator; and also generates an electrostatic stress in order to return the moving mass to the initial position thereof.

REFERENCES:
patent: 6257061 (2001-07-01), Nonoyama et al.
patent: 6301965 (2001-10-01), Chu et al.
patent: 6497149 (2002-12-01), Moreau et al.
patent: 6543285 (2003-04-01), Hashimoto
patent: 7275433 (2007-10-01), Caminada et al.

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