SYSTEM AND METHOD FOR DETECTING CHANGES IN FOOD LOAD CHARACTERISTICS USING COEFFICIENT OF VARIATION OF EFFICIENCY

An electromagnetic cooking device is provided having a controller and a plurality of RF feeds configured to introduce electromagnetic radiation into an enclosed cavity to heat up a food load. The controller is configured to: (a) cause the generation of RF excitations at a specified frequency and pha...

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Bibliographic Details
Main Authors NOCELLA, Valeria, GUATTA, Davide
Format Patent
LanguageEnglish
French
German
Published 25.08.2021
Subjects
ELECTRIC HEATING
ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
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Summary:An electromagnetic cooking device is provided having a controller and a plurality of RF feeds configured to introduce electromagnetic radiation into an enclosed cavity to heat up a food load. The controller is configured to: (a) cause the generation of RF excitations at a specified frequency and phase shifts from each of the plurality of RF feeds for a predetermined time period; (b) during the predetermined time period: measure and analyze the backward power at the plurality of RF feeds to calculate efficiency, determine a coefficient of variation in the efficiency, and monitor the coefficient of variation to identify possible changes in a characteristic of the food load; and (c) repeatedly perform steps (a) and (b) until such time that a possible change is identified in a characteristic of the food load based on changes in the coefficient of variation. The characteristic may be the volume of the food load.
Bibliography:Application Number: EP20160925054