MICROCONTROLLER MEASURING TRANSDUCER FOR WENNER SENSOR Russian patent published in 2025 - IPC G01R27/26 G01N27/02 

FIELD: measuring.

SUBSTANCE: invention relates to measuring equipment, in particular to devices for measuring electrical resistance, and can be used in systems for wireless monitoring of electrical resistance of soil using a Wenner sensor. A microcontroller measuring transducer for a Wenner sensor comprises: microcontroller 1, four RC filters 2-5, two resistors 6 and 7, radio module 8, four electrodes 9-12, eight digital temperature sensors 13-20. First outputs of resistors 6 and 7 are connected to outputs of the first and second PWM, respectively, built in microcontroller 1, second outputs of resistors 6 and 7 are connected to inputs of first 2 and fourth 5 RC-filters, and also connected to electrodes, respectively, first 9 and fourth 12, which are connected, respectively, to outputs of third and fourth PWM, built-in microcontroller 1. Electrodes of second 10 and third 11 are connected to inputs of second 3 and third 4 RC-filters, respectively. Outputs of all four RC-filters are connected to corresponding inputs of multichannel ADC built in microcontroller 1. Digital temperature sensors 13-20 are connected to microcontroller 1 through interface bus 1-Wire, radio module 8 is connected to microcontroller 1 via serial digital interface (PWM and ADC built into microcontroller 1 are not shown in the drawing).

EFFECT: broader functional capabilities of the device, namely the possibility of measuring active and complex soil resistance using a Wenner sensor, as well as performing the function of wireless monitoring of the measured values.

2 cl, 1 dwg