Patent ID: 9163972
Filing Date: 2015-10-20
Classification: A47K,E03C,E03D,G01D,G01F

Abstract:
1. An electronic toilet comprising: a toilet tank configured to receive and hold water from a water supply therein; at least one capacitive sensor located within the toilet tank; a toilet bowl in fluid communication with the toilet tank; a bowl overflow capacitive sensor coupled to the toilet bowl a location above a normal water fill level of the toilet bowl, the bowl overflow capacitive sensor including a sensing electrode, a first sense wire coupled to the electrode, and a second sense wire spaced apart from the electrode; and a controller coupled to the at least one capacitive sensor in the toilet tank and to the first and second sense wires of the bowl overflow capacitive sensor, the controller being programmed to determine a difference signal between output signals received from the first and second sense wires of the bowl overflow capacitive sensor to reduce the effect of cross-talk from the at least one capacitive sensor in the toilet tank on the bowl overflow capacitive sensor, and the controller also being programmed to analyze the difference signal to determine when a water level in the toilet bowl is above the normal water fill level of the toilet bowl.