Systems and methods for non-invasive microwave testing of bottles of liquids, including alcoholic beverages and edible oils like olive oil
AssigneeTrustees of Dartmouth College
InventorsPaul M. Meaney, Timothy Raynolds
Life of this patent
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Abstract
A system for non-invasive microwave testing a bottle of liquid may include an emission probe for emitting a microwave signal through a wall of the bottle into the liquid and a detection probe for receiving at least a portion of the microwave signal from the liquid via the wall. The system includes a classifier configured to distinguish olive oil from some other common vegetable oils, to distinguish real from some imitation maple syrups, and to distinguish between several alcoholic beverages.
Claims14
A system for non-invasive microwave testing a bottle of liquid, comprising:
- an emission probe for emitting a microwave signal through a wall of the bottle into the liquid;
- and
- a detection probe for receiving at least a portion of the microwave signal from the liquid via the wall;
- each of the emission probe and the detection probe being a coaxial probe that includes:
- a curved end face configured to fit adjacent a common bottle shape;
- and
- a tapered coaxial transmission line leading to the curved end face, diameter of the tapered coaxial transmission line increasing in direction toward the curved end face.
A method for non-invasive microwave testing a bottle of liquid, comprising:
- emitting, from an emission probe coupled to a wall of the bottle, a microwave signal through the wall and into the liquid;
- and
- receiving, from the liquid via the wall, at least a portion of the microwave signal into a detection probe coupled to the wall;
- scanning frequency of the microwave signal emitted in the step of emitting;
- and
- recording at least one spectrum of at least one of magnitude and phase of the at least a portion of the microwave signal received in the step of receiving.
Dependencies are inferred from the claim text.