STATE DETECTION SYSTEM, INTERFACE SYSTEM, HEALTH APPLIANCE, GAME SYSTEM, STATE DETECTION METHOD AND STATE DETECTION PROGRAM

摘要

PROBLEM TO BE SOLVED: To estimate the state of a body of a person seated on a device based on a plurality of sensor values.

SOLUTION: On the surface of a balance ball 100, the balance ball 100 is detachably installed with: acceleration sensors 200 each detecting an inclinationθof the balance ball 100 changing according to the movement of the person seated on the balance ball 100; and pressure sensors 210 and strain sensors 220 detecting positions of the gravity centers Ga, Gb applied to the balance ball 100 changing according to the movement of the person seated on the balance ball 100. A behavior and a posture of the body of the person seated on the balance ball 100 are estimated based on inclinationsθx,θyof two axes obtained from sensor values of the acceleration sensors 200, the gravity center Ga obtained from sensor values of the pressure sensors 210, and the gravity center Gb and additional information Gc obtained from sensor values of the strain sensors 220.

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