US 12,405,240 B1
System for and method of improving accuracy and discrimination of liquids in capacitive moisture sensors
Terry Lance Beasley, Dothan, AL (US); Daniel L. Dietzen, Miramar Beach, FL (US); Gary H. Dietzen, Destin, FL (US); and Ronald R. Murphy, Dothan, AL (US)
Assigned to ENCO ELECTRONIC SYSTEMS, LLC, Destin, FL (US)
Filed by ENCO ELECTRONIC SYSTEMS, LLC, Destin, FL (US)
Filed on Mar. 14, 2024, as Appl. No. 18/605,765.
Application 18/605,765 is a continuation of application No. 17/853,421, filed on Jun. 29, 2022, granted, now 11,946,892.
Application 17/853,421 is a continuation of application No. 17/719,104, filed on Apr. 12, 2022, abandoned.
Claims priority of provisional application 63/173,888, filed on Apr. 12, 2021.
This patent is subject to a terminal disclaimer.
Int. Cl. G01N 27/22 (2006.01); G01M 3/16 (2006.01)
CPC G01N 27/221 (2013.01) [G01M 3/16 (2013.01); G01N 27/223 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of detecting, identifying and discriminating various dielectrics in contact with a capacitive structure of a sensor by reading the total resulting charge on a capacitor of the capacitive structure using:
varying the charge time;
various selections of charge polarity and charge time;
varying the charge voltage;
various selections of AC charging with DC offset;
various selections of discharge resistance; and
using cycles of charging, discharging, charging, each using different parameters.