Improved method for Faraday current sensor data processing

Abstract

There are several practical problems that have made difficult the prompt application of Faraday current sensors in industrial environments. Two of them are the multiplicative noise generated by mechanical vibrations and the normalization of the output signal. In this paper we propose a logarithmical processing and a posterior bandpass filtering of the sensor data in order to solve simultaneously both issues. Experimental results demonstrating the viability of the procedure and a comparison with standard processing methods are presented.