Available Technologies

Device and method for measuring electric current by Faraday effect in optical fiber

Engineering, Machines and equipment, Metrology, Public Domain, Utilities

Enhanced sensitivity

The device offers high sensitivity even at low currents.

Resistance to Adverse Conditions

This system has been designed to operate in challenging environments, resistant to electric and magnetic fields, UV radiation, temperature variations and humidity.

Simple installation and low cost

With an optimized configuration, the device allows easier and more cost-effective installation compared to other existing technologies.

Efficient remote monitoring

Optical fiber enables monitoring over long distances, without compromising measurement accuracy.

Wide measuring range

Suitable for continuous currents, periodic and aperiodic waves, providing versatility of applications.

The problem-solution approach

Currently, measuring electric current in challenging environments and in high-power systems presents considerable obstacles. Adverse environmental conditions, overcurrents, saturation effects and the difficulty of monitoring over long distances are just some of the complications faced by companies.

What is it?

The invention provides a magneto-optical device capable of measuring continuous or time-varying electric current, using the Faraday effect in fiber optics. This technology provides precise measurements of currents with high amplitudes, both periodic and aperiodic.

How it works

The device uses the Faraday Effect, which alters the polarization of light in a given medium under the influence of a magnetic field, allowing electric current to be measured. The equipment contains a depolarized light source, a 2×2 coupler, a polarizer, a 45° Faraday mirror and a fibre coil as a sensor.

Inventors

Patent title:
Device and method for measuring electric current by Faraday effect in optical fiber

Deposit Number:
PI 0704094 6

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