Date

6-2012

Degree Name

BS in Electrical Engineering

Department

Electrical Engineering Department

Advisor

Wayne Pilkington

Abstract

This project focuses on creating a device to differentiate between various types of metals via magnetic induction. Magnetic induction is used because it is both non-optical and non-contact. It achieves this by generating a varying magnetic field, which induces eddy currents in the metal. These eddy currents produce small disturbances in the surrounding magnetic field, which can be sensed with Hall Effect Sensors (HES). The primary challenge in this project was generating a sufficiently strong magnetic field to detectable disturbances. In order to achieve better results, a stronger magnetic field must be used as well as more sensitive Hall Effect Sensors should be employed. The current device has two user modes, a continuous read mode and a single-sample read mode.