MULTICHANNEL MICROCONTROLLER MEASURING TRANSDUCER FOR WIRELESS CAPACITANCE SENSORS Russian patent published in 2024 - IPC G01R27/26 H04B5/72 

FIELD: measurement.

SUBSTANCE: invention relates to measurement equipment, in particular to devices for measuring physical quantities with capacitive sensors, and can be used to build wireless systems for monitoring moisture content of soil and grain during its storage, as well as multi-sensor embedded computer systems for monitoring and control. Multichannel microcontroller measuring transducer for wireless capacitive sensors comprises microcontroller 1, radio module 2, RC-filter 3, resistive matrix 4 and capacitive sensors C1…Cn. Common point of connection of the first outputs of resistors of resistive matrix 4 is connected to the output of the second pulse-width modulator built into microcontroller 1. Second outputs of each resistor of the resistive matrix are connected to certain inputs of an analogue multiplexer built into microcontroller 1. Microcontroller 1 is connected via digital serial interface to radio module 2.

EFFECT: broader functional capabilities of the device, namely the possibility of measuring the capacitance of several sensors, the number of which is determined by the number of analogue inputs of the microcontroller, as a result of which more information can be obtained.

1 cl, 1 dwg