Inductive high data rate transmission for bearing systems

Abstract

This paper describes a wireless transmission system for fast moving objects to transmit 20 W power and data simultaneously on ball bearing systems. Data communication using inductive transmission technology at 13.56 MHz has to deal with strong cross-interference due to the power link signal. The surrounding material influences the antenna characteristic and the signal strength. The main challenge was the design of the coil in respect of the size and positioning, as well as tolerance against displacement. In this paper, the antenna design will be presented in detail by using simulations and measurements