Contactless power and signal transmission system applied to a hydrostatic loading device

Abstract

In this paper, a system for supplying electric power and signal transmission wirelessly for the hydrostatic loading device is put forward. The electric power supplying and signal sending module of the system adopt contactless transmission method, which is commonly called CPT (contactless power transmission). Energy, with the form of a certain frequency of magnetic field, gets through the austenitic stainless steel. Being used as the chamber of the system, the austenitic stainless steel has the same relative magnetic permeability as the vacuum. After travelling through the chamber wall, energy is captured by the coil inside the chamber. Then it is converted into DC power and sent to the loads inside the chamber (1). Signal processing and sending module converts the analog signals into digital ones and restore them. Data consisting of signals is sent out from the chamber with the form of magnetic wave. Devices outside the chamber receive the data and recover it.