Design of Intelligent Conductivity Meter Based on MSP430F149
Abstract
An intelligent conductivity meter based on
MSP430F149 microcontroller was proposed in this paper. The intelligent
conductive meter was composed by MSP430F149 microcontroller and its
peripheral circuits, bipolar pulse excitation circuit and waveform
transform circuit. The MSP430F149 was chosen to control the generation
of bipolar pulse excitation signal and take temperature compensation. It
adopted bipolar pulse excitation signal to avoid the electrode
polarization effects. The measurement error generated by the solution
temperature fluctuation could be amended by the temperature
compensation. It could self- compensation and self-tuning to fit
variance solution.
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