Inertial sensor and electrical or electronic device

Details Inertial sensor and electrical or electronic device Inertial sensor and electrical or electronic device

2008-03-31

2011-10-18

Kwok, Helen C. (Department: 2856)

Measuring and testing

Speed, velocity, or acceleration

Response to multiple sensing means or motion conditions

C073S514320

Reexamination Certificate

active

08037760

ABSTRACT:
An inertial sensor includes an oscillator that is supported by an elastic supporting member such that the oscillator is floating relative to a base and the oscillator is displaceable along a single axis, and a displacement detection unit detecting a displacement of the oscillator. The oscillation of the oscillator is a simple harmonic motion along a Z axis. An X axis, a Y axis, and the Z axis, serving as reference axes of an oscillation coordinate system for the oscillator, are shifted to provide x, y, and z axes, serving as new reference axes. Position coordinates of the oscillator of the x, y, and z axes are determined in at least two points during one period of the oscillator. A difference vector (Δx, Δy, Δz) is calculated on the basis of the determined position coordinates. An angular velocity or an acceleration is obtained using the difference vector.

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