SENSOR DEVICE, VIBRATION DETECTION SYSTEM, SENSOR UNIT, INFORMATION PROCESSING DEVICE, VIBRATION DETECTION METHOD, AND PROGRAM
First Claim
1. A sensor device comprising:
- a first sensor group in which a plurality of first vibration sensors for detecting vibration acceleration in one direction with respect to an object to be detected are arranged to face the same direction;
a phase difference calculation unit which, based on a plurality of first signals indicating the vibration acceleration detected by each of the plurality of first vibration sensors included in the first sensor group, calculates a first phase difference indicating a phase difference between the plurality of first signals; and
an acceleration calculation unit which, using the first phase difference and the plurality of first signals, calculates vibration acceleration in a first direction perpendicular to a surface on which the plurality of first vibration sensors are arranged, and vibration acceleration in a second direction parallel to the surface.
1 Assignment
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Accused Products
Abstract
A sensor device includes: a first sensor group (13) in which a plurality of first vibration sensors for detecting vibration acceleration in one direction with respect to an object to be detected are arranged to face the same direction; a phase difference calculation unit (220) which, based on a plurality of first signals indicating the vibration acceleration detected by each of the plurality of first vibration sensors included in the first sensor group (13), calculates a first phase difference indicating the phase difference between the plurality of first signals; and an acceleration calculation unit (230) which, using the first phase difference and the plurality of first signals, calculates vibration acceleration in a first direction perpendicular to a surface on which the plurality of first vibration sensors are arranged, and vibration acceleration in a second direction parallel to the surface on which the plurality of first vibration sensors are arranged.
9 Citations
27 Claims
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1. A sensor device comprising:
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a first sensor group in which a plurality of first vibration sensors for detecting vibration acceleration in one direction with respect to an object to be detected are arranged to face the same direction; a phase difference calculation unit which, based on a plurality of first signals indicating the vibration acceleration detected by each of the plurality of first vibration sensors included in the first sensor group, calculates a first phase difference indicating a phase difference between the plurality of first signals; and an acceleration calculation unit which, using the first phase difference and the plurality of first signals, calculates vibration acceleration in a first direction perpendicular to a surface on which the plurality of first vibration sensors are arranged, and vibration acceleration in a second direction parallel to the surface. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8-18. -18. (canceled)
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19. A vibration detection method including:
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by a sensor device including a first sensor group in which a plurality of first vibration sensors for detecting vibration acceleration in one direction with respect to an object to be detected are arranged to face the same direction, calculating, based on a plurality of first signals indicating the vibration acceleration detected by each of the plurality of first vibration sensors included in the first sensor group, a first phase difference indicating a phase difference between the plurality of first signals; and calculating, using the first phase difference and the plurality of first signals, vibration acceleration in a first direction perpendicular to a surface on which the plurality of first vibration sensors are arranged, and vibration acceleration in a second direction parallel to the surface. - View Dependent Claims (20, 21, 22, 23, 24, 25)
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26. A non-transitory computer readable media storing program for causing a sensor device including a first sensor group in which a plurality of first vibration sensors for detecting vibration acceleration in one direction with respect to an object to be detected are arranged to face the same direction to achieve:
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a phase difference calculation function of calculating, based on a plurality of first signals indicating the vibration acceleration detected by each of the plurality of first vibration sensors included in the first sensor group, a first phase difference indicating a phase difference between the plurality of first signals; and an acceleration calculation function of calculating, using the first phase difference and the plurality of first signals, vibration acceleration in a first direction perpendicular to a surface on which the plurality of first vibration sensors are arranged, and vibration acceleration in a second direction parallel to the surface. - View Dependent Claims (27)
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Specification