EQUILIBRATION OF THE WHEATSTONE BRIDGE BY THE PULSE-WIDTH MODULATION METHOD

Possibility of an equilibration of the resistive sensor bridge scheme (the Wheatstone bridge) is investigated by the Pulse-Width Modulation method. On the basis of imitating modeling and experiment the transformation process of the resistive sensor resistance into binary code by Microcontroller Measurement Converter is considered. The equilibration process of the Wheatstone bridge circuit is realized with using Pulse-Width Modulator and the Analogue Comparator built in the microcontroller. The offered method allows combining functions of Analog-to-Digital Conversion with the Wheatstone bridge equilibration that is very important at creation of intellectual sensors.