Electrical Current Sensors Harvest Wasted Electromagnetic Energy
- Friday, 31 January 2014
New smart sensors produce large and clear output voltage signals, which are 2,000 times higher than the traditional current sensors.
Measuring about 1 mm in thickness, the chip can be placed on any sensing point of interest such as electrical cables, conductors, junctions, and bus bars to detect electrical currents.
Made from rare earth multiferroics with giant magnetoelectric properties, the chip enables a direct detection of magnetic fields generated by electricity and a linear conversion of these magnetic fields into electrical voltage signals.
The smart wireless sensors, which do not have power cords and electronic active components, can now reach hard-to-access locations such as rails where conventional sensors are either impossible or not cost effective.
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