MULTICHANNEL MICROCONTROLLER MEASURING TRANSDUCER FOR PROBES OF SOIL MOISTURE MONITORING SYSTEMS WITH CAPACITIVE SENSORS Russian patent published in 2024 - IPC G01R27/26 

FIELD: measurement.

SUBSTANCE: invention relates to measuring 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 storage, as well as other embedded systems. Multichannel microcontroller measuring transducer for probes of soil moisture monitoring systems with capacitive sensors comprises microcontroller 1, radio module 2, resistive matrix 3, digital temperature sensors 4. Resistive matrix contains resistors R1, R2…Rn/2, where n is the number of capacitive sensors C1, C2…Cn. Capacitive sensors are connected to the common wire by the first plates, the second plates of the capacitive sensors C1, C2…Cn are connected each in ascending order of numbers to outputs A1, A2…An of microcontroller 1. First outputs of the resistors of the resistive matrix are connected to the odd inputs of the AM, the second outputs of the resistors of the resistive matrix are connected to the even inputs of the AM, radio module 2 is connected via digital interface to microcontroller 1, digital temperature sensors S1, S2…Sn are connected to microcontroller via 1-Wire interface.

EFFECT: expansion of functional capabilities by means of data conversion by one microcontroller, which, in turn, will make it possible to create compact probes for wireless monitoring systems, for example, soil and grain moisture during its storage.

1 cl, 1 dwg