Method of inspecting food stuffs and/or associated packaging

Details Method of inspecting food stuffs and/or associated packaging Method of inspecting food stuffs and/or associated packaging

2006-09-19

2006-09-19

Williams, Hezron (Department: 2856)

Measuring and testing

Vibration

By mechanical waves

C073S597000, C073S599000, C073S600000

Reexamination Certificate

active

07107852

ABSTRACT:
A system to perform measurements on liquids, meat, viscous sugar or starch-based materials, and other foodstuffs using air-coupled ultrasound is provided. The technique uses ultrasonic transducers (advantageously capacitive transducers with polymer membranes), to generate ultrasonic signals in air, and to receive these signals after they have passed through the material under test. An ultrasonic pulse-compression process is then applied to increase the sensitivity of signals transmitted through the materials.

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Raffaella Saggin et al.,Non-contact Ultrasonic Measurements in Food Materials, Food Research International, vol. 34, 2001, pp. 865-870.

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