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High precision data acquisition system for resistance measurement with Wheatstone bridge

In this paper, a simulation system is presented that measures the stress and contraction of a displacement transducer. The displacement transducer specifications are achieved by the voltage divider described in the paper. Structure of voltage reference, voltage divider, DC voltage generator, instrumentation amplifier and two different data loggers is presented. System was tested in a way that voltage divider produced three voltage levels of -4 mV, 0 mV and +4 mV. Analyzing these three voltage levels conclusions were made about resolution, noise and accuracy. Particular system is tested in laboratory conditions.