Microcontroller Based Dielectric Constant Measurement
نویسندگان
چکیده
A dielectric constant measurement setup has been developed to measure dielectric constant of liquids using AT89C55WD microcontroller. A modified operational amplifier based AC Schering Bridge network is used to compute capacitance and hence calculate dielectric constant of liquids. This instrument system permits recording of dielectric constant of liquids at various concentrations and temperature and sends data to a computer to enable the computer processing of such data. A dedicated AT89C55WD (8-bit) based microcontroller and its associated peripherals are employed for the hardware. The details of its interface to measure dielectric constant of liquids, temperature and to control the temperature at desired range and evaluate results are explained in this paper.
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