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Sensors 2013, 13(10), 13584-13595; doi:10.3390/s131013584
Article

Design and Development of a Low-Cost Optical Current Sensor

1,* , 2
,
1
,
2
,
2
 and
1
1 Department of Communications Engineering, ETSI de Bilbao, University of the Basque Country (UPV/EHU), Alameda de Urquijo s/n, Bilbao 48013, Spain 2 Smart Grid, Derio Bidea 28, Zabalondo Industrialdea, Mungia 48100, Spain
* Author to whom correspondence should be addressed.
Received: 23 July 2013 / Revised: 22 September 2013 / Accepted: 30 September 2013 / Published: 10 October 2013
(This article belongs to the Special Issue State-of-the-Art Sensors Technology in Spain 2013)
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Abstract

In this paper we demonstrate the design of a low-cost optical current sensor. The sensor principle is the Faraday rotation of a light beam through a magneto-optical material, SF2, when a magnetic field is present. The prototype has a high sensitivity and a high linearity for currents ranging from 0 up to 800 A. The error of the optical fibre sensor is smaller than 1% for electric currents over 175 A.
Keywords: Faraday rotation; plastic optical fibre; optical fibre sensors; current sensor Faraday rotation; plastic optical fibre; optical fibre sensors; current sensor
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Zubia, J.; Casado, L.; Aldabaldetreku, G.; Montero, A.; Zubia, E.; Durana, G. Design and Development of a Low-Cost Optical Current Sensor. Sensors 2013, 13, 13584-13595.

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