MICROCONTROLLER METERING CONVERTER WITH FUNCTION OF CURRENT MEASUREMENT IN RESISTIVE SENSOR CIRCUIT Russian patent published in 2015 - IPC G01R27/00 

FIELD: instrumentation.

SUBSTANCE: microcontroller metering converter with a function of current measurement in a resistive sensor circuit comprises: (see the drawing) a resistor 1 (R₁), a resistor 2 (R₂), a resistor 3 (R₃) a resistor 4 (R₄), i.e. a resistive sensor, a resistor 5 (R₅) and a microcontroller 6. Resistors 1 and 2 by the first leads are connected to the first inlet of an analogue multiplexer of the microcontroller 6, resistors 3 and 4 by the first leads are connected to the second inlet of the analogue multiplexer of the microcontroller 6, the second lead of the resistor 4 and the first lead of the resistor 5 are connected to the third inlet of the analogue multiplexer of the microcontroller 6, the second leads of resistors 1 and 3 are connected to the first digital outlet of the microcontroller 6, the second leads of resistors 2 and 5 are connected to the second digital outlet of the microcontroller 6. The outlet of the analogue multiplexer of the microcontroller 6 is connected to the inlet of the analogue-digital converter (ADC), built into the microcontroller 6.

EFFECT: increased accuracy.

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