Water Level Detection on Laundry Washers Using Capacitance Measuring While Also Using the Microprocessor to Monitor Flow Rate.
Publication Date: 2004-Sep-17
The IP.com Prior Art Database
This invention uses physical capacitance difference between air and water in the clothes washer. This uses 3, 4, or more pairs of plates mounted on the side of the plastic washer tub that when used with electronics can detect the water level. This is shown below in a diagram format.