Measuring and testing – Speed – velocity – or acceleration – Acceleration determination utilizing inertial element
Patent
1999-04-06
2000-10-17
Moller, Richard A.
Measuring and testing
Speed, velocity, or acceleration
Acceleration determination utilizing inertial element
G01P 1500
Patent
active
061314579
ABSTRACT:
A three-dimensional acceleration sensor having a magnetic body including a mass point, mounted to a vibrator having three-dimensional freedom and an axis in line with a Z-axis within the orthogonal spatial coordinate axes of X, Y and Z. The acceleration sensor includes four or more detector elements including at least two positioned along the X-axis and at least two positioned along the Y-axis with their centers located along a concentric circle around the origin point of the coordinate axes. The sensor detects acceleration in a direction of the X-axis through a relative difference in output voltage between two of the detector elements positioned along the X-axis due to a variation of magnetic field intensity from the magnetic body, acceleration in a direction of the Y-axis through a relative difference in output voltage between two of the detector elements positioned along the Y-axis, and acceleration in a direction of the Z-axis through an aggregate sum of the output voltages of all the detector elements. The acceleration sensor thus has a wide dynamic range as well as high detection accuracy, and may be produced having a reduced size.
Matsushita Electric - Industrial Co., Ltd.
Moller Richard A.
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