Abstract
Frequency-output sensors for voltage and electric current measurements are reported. Fiber-optic sensor was constructed as a closed optoelectronic contour formed by a source of radiation, an optical fiber delay line, a photoreceiver and regeneration block. The voltage sensor is based on the liner piezoelectric effect of a PZT ceramic tube. Sensitive element of this device was the optical fiber, which was wound onto the piezoelectric tube. Sensitive element of electric current sensor was optical fiber covered by a thin layer of aluminium. The electric current is passed through an aluminium environment. Identification of measured parameters was carried out with high accuracy by the change of recirculation frequency in the contour. Sensitivity of these sensors was estimated.
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