US 11,946,892 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)
Filed by ENCO ELECTRONIC SYSTEMS, LLC, Destin, FL (US)
Filed on Jun. 29, 2022, as Appl. No. 17/853,421.
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.
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)] 19 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 the capacitor using combinations of the group consisting of:
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;
using cycles of charging, discharging, charging, each using different parameters.