ELECTRIC TOOTHBRUSH, SYSTEM, BRUSH SPACE DETECTION METHOD AND PROGRAM

摘要

An electric toothbrush according to the present invention has a gyro sensor inside a main body. The gyro sensor detects an angular velocity of the main body, and the main body has a head portion, a neck portion, and a grip portion in a longitudinal axis direction. An angle (θ), which is formed by a longitudinal axis of the main body in a state in which the brush bristles of the head section touch a brushing point in a bit, with respect to the longitudinal axis of the main body in a state in which the brush bristles of the head section a reference position of the dentition based on an output obtained from the gyro sensor. A corresponding point (P) corresponding to the brushing point on an approximation curve (E1) curved according to the dentition based on the angle (θ) is obtained, and the coordinates of the corresponding point (P) are taken as a translation position of the Brushing station used.