A METHOD OF DETERMINING A WATER HARDNESS LEVEL OF WATER AND A HOUSEHOLD APPLIANCE HAVING AT LEAST ONE COMPONENT SUPPLIED WITH WATER DURING OPERATION

The invention relates to a method of determining a water hardness level of water, especially for determining the water hardness of water used by a household appliance (1), wherein- at least two electrodes (16) are exposed to the water;- an electric voltage acts on the at least two electrodes (16), w...

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Bibliographic Details
Main Authors Tur Gil, Alejandro Juan, Garcia Muro, Irene, Perez Nicolas, Maria, Blecua, Aurora, Calabuig Adobes, Irene, Rojo Esteban, Lander
Format Patent
LanguageEnglish
French
German
Published 17.04.2024
Subjects
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
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Summary:The invention relates to a method of determining a water hardness level of water, especially for determining the water hardness of water used by a household appliance (1), wherein- at least two electrodes (16) are exposed to the water;- an electric voltage acts on the at least two electrodes (16), wherein the electric voltage is an alternating electric voltage having a predetermined frequency range, wherein the frequency range is provided by a frequency sweep;- in response to the electric voltage acting on the electrodes, respective electric currents are measured for the different frequencies of the frequency sweep, and- respective electric impedance values are calculated for the frequencies based on the electric voltage and the electric currents measured, wherein the electric impedance values are processed by an analyzing apparatus (13) connected with the electrodes (16) which is configured to use a machine-learning model based on supervised learning.
Bibliography:Application Number: EP20220382988