Electricity: measuring and testing – Impedance – admittance or other quantities representative of... – Distributive type parameters
Patent
1998-01-09
2000-08-29
Do, Diep N.
Electricity: measuring and testing
Impedance, admittance or other quantities representative of...
Distributive type parameters
73 73, G01N 2204
Patent
active
061114154
ABSTRACT:
A method and system for measuring the moisture content and internal structure of a material which is either packaged as a module or presented in a continues bulk flow. A frequency modulated digital pulse of very high frequency microwaves is directed through the material under analysis by a microwave transmitter. A microwave receiver receives the microwave signal after it exits the material on the opposite side to that of the microwave transmitter. The attenuation and time delay of the exit signal are analyzed and corrected with empirically derived functions so as to calculate the moisture content and density, respectively, of the material. Irregularity of the internal structure of the material is determined by comparing the calculated densities of multiple slices of the material with each other. In an alternative embodiment, the microwave signal is transmitted through the material under analysis by a first satellite dish antenna, and then redirected back through the same slice of material by a second satellite dish antenna located on the opposite side of the material under analysis. The returning signal is received by the first satellite dish antenna, and then processed to calculate the density and moisture of the material in the same manner as described above.
REFERENCES:
patent: 2659860 (1953-11-01), Breazeale
patent: 3360721 (1967-12-01), Pullman
patent: 3644826 (1972-02-01), Cornetet, Jr.
patent: 3810005 (1974-05-01), Bennion et al.
patent: 3815019 (1974-06-01), Wiles
patent: 3829764 (1974-08-01), Bosisio
patent: 4123702 (1978-10-01), Kinanen et al.
patent: 4352059 (1982-09-01), Suh et al.
patent: 4361801 (1982-11-01), Meyer et al.
patent: 4500835 (1985-02-01), Heikkila
patent: 4546311 (1985-10-01), Knochel
patent: 4578998 (1986-04-01), Gard
patent: 4620146 (1986-10-01), Ishikawa et al.
patent: 4675595 (1987-06-01), Hane
patent: 4789820 (1988-12-01), Parrent, Jr. et al.
patent: 4962384 (1990-10-01), Walker
patent: 4991915 (1991-02-01), Thompson et al.
patent: 5333493 (1994-08-01), Cutmore
patent: 5581191 (1996-12-01), Yamaguchi
patent: 5619143 (1997-04-01), Stevens et al.
patent: 5621330 (1997-04-01), Greenwald et al.
patent: 5845529 (1998-12-01), Moshe et al.
Do Diep N.
Friedman Mark M.
Malcam Ltd.
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