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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

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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 which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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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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