Contactless power transmission device, contactless signal transmission device and separate mechanical device using them and control method

摘要

Disclosed are a contactless power transmitter, a contactless signal transmitter (hereinafter referred to as a power coupler and a signal coupler, respectively) and a separate mechanical device using the same.;The power coupler is a separate type transformer in which the primary side and the secondary side are fixed to the stationary part and the rotating part of the mechanical device, respectively, so that the output does not change with any rotation of the rotating part.;The signal coupler includes a transmission side portion having an electrical / optical conversion device for converting an electrical signal into a rotationally symmetric optical signal with respect to the rotation axis of the rotating part, and a reception side portion having a photoelectric conversion device for converting an optical signal into an electrical signal. Consists of.;Therefore, the rotating unit can receive electric power from the fixed unit while rotating, and can communicate with the fixed unit. The rotating part can be easily attached to the fixed part or can be separated and moved.