Development of a Position-Sensing System for a Wireless Magnetic Marker

Abstract

We propose a new system for sensing the position of wireless magnetic marker. It consists of a resonating wireless magnetic marker, driving coils, and pickup coils. The marker does not have a battery or electric wires. The system has an accuracy of around 2 mm, and it can be used for highly accurate position sensing without magnetic shielding, because it is free from earth field noise.