MICROCONTROLLER DEVICE TO ANALYSE DIELECTRIC PROPERTIES OF BIOLOGICAL OBJECTS AND INSULATION MATERIALS Russian patent published in 2010 - IPC G01R27/26 

FIELD: physics.

SUBSTANCE: proposed device comprises microcontroller 1, first resistor 2 with known resistance (R1), capacity transducer 3 of measured capacity (Cx), second resistor 4 with known resistance (R2), third resistor 5 of measured resistance (Rx), integrating RC-component 6, and digital indicator 7. Resistors 2, 4 and 5 have their first outputs connected to first input of analog comparator of microcontroller 1 and first plate of transducer 3, input of RC-component 6 is connected to first input of analog comparator built in microcontroller 1, output of RC-component 6 is connected to output of pulse-width modulator built in microcontroller 1, second outputs of resistors 2, 4 and 5 are connected to first, second and third outputs of microcontroller 1, respectively. Second plate of transducer 3 is connected to common wire, indicator 7 is connected to microcontroller in a known circuit.

EFFECT: higher accuracy of measurement.

1 dwg