Real-time system for detecting foreign bodies in food containers using ultrasound
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United States of America Patent
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-
Aug 31, 2004
Grant Date -
Jul 31, 2003
app pub date -
Oct 2, 2002
filing date -
Oct 2, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An ultrasound system determines the presence of a foreign object in a container of fluid by measuring echo signals from the outer surface of the container and the inner surface of the container. The amplitude of the echo signals are compared to determine the presence of an object in the container. The system also determines viscosity of the contained fluid by measuring a through-transmission time through the container and the fluid, measuring an outer echo transmission time of an outer echo signal from the outer surface of the container and an inner echo transmission time of an inner echo signal from the inner surface of the container, and determining a time difference between the outer echo transmission time and the inner surface transmission time.
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