skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Systems, methods, and software for determining spatially variable distributions of the dielectric properties of a heterogeneous material

Abstract

Systems, methods, and software for measuring the spatially variable relative dielectric permittivity of materials along a linear or otherwise configured sensor element, and more specifically the spatial variability of soil moisture in one dimension as inferred from the dielectric profile of the soil matrix surrounding a linear sensor element. Various methods provided herein combine advances in the processing of time domain reflectometry data with innovations in physical sensing apparatuses. These advancements enable high temporal (and thus spatial) resolution of electrical reflectance continuously along an insulated waveguide that is permanently emplaced in contact with adjacent soils. The spatially resolved reflectance is directly related to impedance changes along the waveguide that are dominated by electrical permittivity contrast due to variations in soil moisture. Various methods described herein are thus able to monitor soil moisture in profile with high spatial resolution.

Inventors:
Issue Date:
Research Org.:
Transcend Engineering and Technology, LLC, Bethel, VT (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1440762
Patent Number(s):
9970969
Application Number:
14/813,929
Assignee:
Transcend Engineering and Technology, LLC (Bethel, VT)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
G - PHYSICS G01 - MEASURING G01R - MEASURING ELECTRIC VARIABLES
DOE Contract Number:  
SC0009646
Resource Type:
Patent
Resource Relation:
Patent File Date: 2015 Jul 30
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Farrington, Stephen P. Systems, methods, and software for determining spatially variable distributions of the dielectric properties of a heterogeneous material. United States: N. p., 2018. Web.
Farrington, Stephen P. Systems, methods, and software for determining spatially variable distributions of the dielectric properties of a heterogeneous material. United States.
Farrington, Stephen P. Tue . "Systems, methods, and software for determining spatially variable distributions of the dielectric properties of a heterogeneous material". United States. https://www.osti.gov/servlets/purl/1440762.
@article{osti_1440762,
title = {Systems, methods, and software for determining spatially variable distributions of the dielectric properties of a heterogeneous material},
author = {Farrington, Stephen P.},
abstractNote = {Systems, methods, and software for measuring the spatially variable relative dielectric permittivity of materials along a linear or otherwise configured sensor element, and more specifically the spatial variability of soil moisture in one dimension as inferred from the dielectric profile of the soil matrix surrounding a linear sensor element. Various methods provided herein combine advances in the processing of time domain reflectometry data with innovations in physical sensing apparatuses. These advancements enable high temporal (and thus spatial) resolution of electrical reflectance continuously along an insulated waveguide that is permanently emplaced in contact with adjacent soils. The spatially resolved reflectance is directly related to impedance changes along the waveguide that are dominated by electrical permittivity contrast due to variations in soil moisture. Various methods described herein are thus able to monitor soil moisture in profile with high spatial resolution.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {5}
}

Patent:

Save / Share:

Works referenced in this record:

Comprehensive Wave Propagation Model to Improve TDR Interpretations for Geotechnical Applications
journal, January 2007


Measurement and Modeling of the TDR Signal Propagation through Layered Dielectric Media
journal, January 2003


Generalized pencil-of-function method for extracting poles of an EM system from its transient response
journal, February 1989


Measurement of Soil Bulk Electrical Conductivity Using Partially Coated TDR Probes
journal, January 2009


Spatially resolved water content profiles from inverted time domain reflectometry signals
journal, December 2003


A fast TDR-inversion technique for the reconstruction of spatial soil moisture content
journal, January 2005


The time-domain reflectometry method for measuring soil water content and salinity
journal, September 1986


Feasibility of Sequential and Coupled Inversion of Time Domain Reflectometry Data to Infer Soil Hydraulic Parameters under Falling Head Infiltration
journal, January 2011


High-resolution moisture profiles from full-waveform probabilistic inversion of TDR signals
journal, November 2014


Laboratory measurements of electromagnetic wave velocity in layered sands
journal, April 2001


Soil-Crop Dynamic Depth Response Determined from TDR of a Corn Silage Field Compared to EMI Measurements
journal, September 2010


A Review of Advances in Dielectric and Electrical Conductivity Measurement in Soils Using Time Domain Reflectometry
journal, November 2003


A Review of Advances in Dielectric and Electrical Conductivity Measurement in Soils Using Time Domain Reflectometry
journal, January 2003