Patent ID: 9032796
Filing Date: 2015-05-19
Classification: G01C,G01P,H01L,Y10T

Abstract:
1. An accelerometer, comprising: a substrate extending substantially in a first plane; a first plurality of electrodes formed substantially along a first axis on the substrate; a second plurality of electrodes formed substantially along a second axis on the substrate; a central anchor attached to the substrate; a frame attached to the central anchor and extending substantially in a second plane, the frame being substantially constrained for motion along the second axis; and a proof mass attached to the frame and extending substantially in the second plane, the proof mass having a first plurality of slots extending along the first axis and a second plurality of slots extending along the second axis, the proof mass being substantially constrained for motion along the first axis and along the second axis, wherein a lateral movement of the proof mass in response to an applied lateral acceleration along the first axis results in a first change in capacitance at the second plurality of electrodes, wherein a lateral movement of the proof mass in response to an applied lateral acceleration along the second axis results in a second change in capacitance at the first plurality of electrodes, and wherein the first and second pluralities of electrodes are formed substantially in a third plane that is disposed between the first plane and the second plane, the third plane separated from the second plane by a gap.