Pioneer Corporation

Hideto Endo

Kyoichi Terao

Yuji Izuru

A first acceleration sensor is arranged on a crank mounted to a crankshaft so as to be located at a position away from the crankshaft by a distance r, and the first acceleration sensor detects acceleration ain a direction parallel to a longitudinal direction of the crank. A second acceleration sensor is arranged on the crank mounted to the crankshaft so as to be located at a position away from the crankshaft by a distance rdifferent from the distance r, and the second acceleration sensor detects acceleration ain a direction parallel to the longitudinal direction of the crank. A measurement module control part calculates information regarding a rotation angle of the crank based on a, a, r, and r

Rotation angle detection device

A wireless power transmission system () can perform power transmission in a wireless manner. The wireless power transmission system is provided with: a power transmission coil (); a power supplying device () configured to supply electric power to the power transmission coil; a metal detecting device () configured to perform metal detection for detecting whether or not there is metal in surroundings of the power transmission coil; and a controlling device () configured to provide a power transmission period which is a period for the power transmission and a metal detection period which is a period for the metal detection, and to control the power supplying device to supply electric power, which is lower than electric power supplied to the power transmission coil in the power transmission period, or not to supply electric power, to the power transmission coil in the metal detection period.

Growing community of inventors

Kanagawa, Japan

Hideto Endo