System and technique for ultrasonic determination of degree of cooking

A method and apparatus are described for determining the doneness of food during a cooking process. Ultrasonic signal are passed through the food during cooking. The change in transmission characteristics of the ultrasonic signal during the cooking process is measured to determine the point at which...

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Bibliographische Detailangaben
Hauptverfasser: PFUND DAVID M, MORGEN GERALD P, JUDD KAYTE M, BOND LEONARD J, CLIFF WILLIAM C, DIAZ AARON A, PAPPAS RICHARD A
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A method and apparatus are described for determining the doneness of food during a cooking process. Ultrasonic signal are passed through the food during cooking. The change in transmission characteristics of the ultrasonic signal during the cooking process is measured to determine the point at which the food has been cooked to the proper level. In one aspect, a heated fluid cooks the food, and the transmission characteristics along a fluid-only ultrasonic path provides a reference for comparison with the transmission characteristics for a food-fluid ultrasonic path.