MULTICHANNEL CAPACITANCE TRANSDUCER FOR SOIL MOISTURE MONITORING SYSTEMS Russian patent published in 2025 - IPC G01R27/26 

FIELD: measuring.

SUBSTANCE: invention relates to measuring equipment, in particular to devices for measuring physical quantities with capacitive sensors, and can be used to construct wireless systems for monitoring soil moisture, as well as other monitoring and control systems. Capacitive sensors C1…Cn by first plates are connected to common wire, second plates are connected to time-setting inputs of corresponding GRP G1…Gn. Outputs of each GRP are connected to anodes of corresponding diodes V1…Vn, cathodes of which are connected to input (D0) of pulses counter, built into microcontroller 1, each GRP generation resolution inputs are connected to corresponding digital outputs D1…Dn of microcontroller, radio module 2 is connected via digital interface to microcontroller 1, temperature sensors S1…Sn are connected to microcontroller 1 via 1-Wire interface and are intended for temperature measurement of soil layer, as capacitive sensors C1…Cn for measuring soil moisture. As generators G1…Gn integrated timers NE555 (KP600VI1) are used.

EFFECT: high measurement accuracy.

1 cl, 1 dwg