Method of calculating an angle of inclination and apparatus with a three-axis acceleration sensor
First Claim
1. A calculator apparatus for calculating an angle of inclination, comprising:
- a sensor device comprising a three-axis acceleration sensor for resolving and sensing acceleration into a first acceleration component in a first axis direction, a second acceleration component in a second axis direction substantially perpendicular to the first axis direction, and a third acceleration component in a third axis direction substantially perpendicular to a plane formed by the first and second axes; and
a calculator for comparing absolute values of the first, second, and third acceleration components, calculating a first angle of inclination from largest one of the first, second and third acceleration components in absolute value and one of remaining two of the first, second and third acceleration components, and calculating a second angle of inclination from the largest acceleration component in absolute value and another of the remaining two acceleration components.
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Accused Products
Abstract
A calculator apparatus for calculating an angle of inclination includes a sensor apparatus and a calculator. The sensor apparatus has a three-axis acceleration sensor, which is used for resolving and sensing acceleration into a first acceleration component in a first axis direction, a second acceleration component in a second axis direction perpendicular to the first axis direction, and a third acceleration component in a third axis direction perpendicular to a plane formed by the first and second axes. The calculator compares absolute values of the first, second, and third acceleration components to calculate a first angle of inclination from one of the three acceleration components that is largest in absolute value and one of the remaining two acceleration components, and calculate a second angle of inclination from the one acceleration component that is largest in absolute value and the other of the two acceleration components.
16 Citations
5 Claims
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1. A calculator apparatus for calculating an angle of inclination, comprising:
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a sensor device comprising a three-axis acceleration sensor for resolving and sensing acceleration into a first acceleration component in a first axis direction, a second acceleration component in a second axis direction substantially perpendicular to the first axis direction, and a third acceleration component in a third axis direction substantially perpendicular to a plane formed by the first and second axes; and a calculator for comparing absolute values of the first, second, and third acceleration components, calculating a first angle of inclination from largest one of the first, second and third acceleration components in absolute value and one of remaining two of the first, second and third acceleration components, and calculating a second angle of inclination from the largest acceleration component in absolute value and another of the remaining two acceleration components. - View Dependent Claims (2, 3)
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4. A calculator apparatus for calculating an angle of inclination to be mounted on an object, comprising:
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a sensor device comprising a three-axis acceleration sensor for resolving and sensing gravitational acceleration of the object into a first acceleration component in a first axis direction, a second acceleration component in a second axis direction substantially perpendicular to the first axis direction, and a third acceleration component in a third axis direction substantially perpendicular to a plane formed by the first and second axes; and a calculator for comparing absolute values of the first, second, and third acceleration components, calculating a first angle of inclination of the object from largest one of the first, second and third acceleration components in absolute value and one of remaining two of the first, second and third acceleration components, and calculating a second angle of inclination of the object from the largest acceleration component in absolute value and another of the remaining two acceleration components. - View Dependent Claims (5)
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Specification