Sensors that show variation in the impedance phase as a function of a given quantity are widely used in various applications, such as magnetic transducers, pressure sensors, temperature sensors, etc. However, the phase sensitivity of these sensors is generally low, which limits the resolution and accuracy of the measurements. In addition, heterogeneous sensor elements can have different phase characteristics, which can impair the performance of systems that use them.
The patent presents advanced methods and electronic circuits for amplifying phase sensitivity and homogenizing sensor elements in transducers and sensors, which include the electrical modelling of sensor element impedances and the introduction of specific components to optimize sensitivity and homogeneity.
The invention proposes different methods for amplifying phase sensitivity, either by reducing the resistive and reactive components of the impedances or by inserting the sensor elements into GIC circuits to create new equivalent impedances. These methods are strategically adjusted to optimize linearity, full scale and sensitivity, resulting in significant improvements in the response of the sensor elements.
Patent title:
Methods and electronic circuits for phase sensitivity amplification and homogenization of sensor elements
Deposit Number:
PI 1004686 0
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