Analysis Device and Analysis System
AssigneeMizuno Corporation
InventorsShohei Shibata, Takeshi Naruo, Yuto Kase, Kiyoshi Hirose
Life of this patent
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Abstract
An analysis device for analyzing a spin axis of a ball receives an input of acceleration data and geomagnetic data detected on a time-series basis by a sensor device built in the ball; calculates attitude information of the ball, based on the acceleration data and the geomagnetic data; calculates the spin rate of the ball released from a subject, based on the geomagnetic data; and calculates an angle of the spin axis of the ball relative to a predetermined direction, using a predetermined filter and based on the attitude information, the spin rate, the geomagnetic data, and a first-order differential value and a second-order differential value of the geomagnetic data.
Claims10
An analysis device for analyzing a spin axis of a ball, the analysis device comprising:
- an information input unit configured to receive an input of acceleration data and geomagnetic data detected on a time-series basis by a sensor device built in the ball;
- an attitude calculation unit configured to calculate attitude information of the ball, based on the acceleration data and the geomagnetic data;
- a spin rate calculation unit configured to calculate the spin rate of the ball released from a subject, based on the geomagnetic data;
- and
- a spin axis calculation unit configured to calculate an angle of the spin axis of the ball relative to a predetermined direction, using a predetermined filter and based on the attitude information, the spin rate, the geomagnetic data, and a first-order differential value and a second-order differential value of the geomagnetic data.
An analysis device for analyzing a spin axis of a ball, the analysis device comprising:
- an information input unit configured to receive an input of acceleration data and geomagnetic data detected on a time-series basis by a sensor device built in the ball;
- an attitude calculation unit configured to calculate attitude information of the ball, based on the acceleration data and the geomagnetic data;
- a spin rate calculation unit configured to calculate the spin rate of the ball released from a subject, based on the geomagnetic data;
- and
- a spin axis calculation unit configured to calculate an angle of the spin axis of the ball relative to a predetermined direction, using a predetermined filter and based on the attitude information, the spin rate, the acceleration data, and a first-order differential value and a second-order differential value of the acceleration data.
An analysis system comprising:
- an analysis device for analyzing a spin axis of a ball;
- and
- a sensor device built in the ball,
- the analysis device including:
- an information input unit configured to receive an input of acceleration data and geomagnetic data detected on a time-series basis by the sensor device;
- an attitude calculation unit configured to calculate attitude information of the ball, based on the acceleration data and the geomagnetic data;
- a spin rate calculation unit configured to calculate the spin rate of the ball released from a subject, based on the geomagnetic data;
- and
- a spin axis calculation unit configured to calculate an angle of the spin axis of the ball relative to a predetermined direction, using a predetermined filter and based on the attitude information, the spin rate, the geomagnetic data, and a first-order differential value and a second-order differential value of the geomagnetic data.
Dependencies are inferred from the claim text.