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Dielectric Constant Measurement Using an Artificial Neural Network

Abstract A microcontroller based measurement setup has been developed to measure dielectric constant of liquids using a PIC16F877 microcontroller. An AC Desauty's bridge network was used to compute capacitance as well as dielectric constants of liquids. This measurement system permits recording of dielectric constant of liquids at various concentrations and temperatures. The recorded data are automatically sent to a computer to enable the computer processing of such data. A three‐layer neural network was used to train the data, using a back propagation algorithm. After training the neural network, it is used to compute the dielectric constants for various concentrations of liquids.