WO2005060653A3 - Inductive probe having a looped sensing element or a terminated transmission line sensing element and methods and system for using the same - Google Patents

Inductive probe having a looped sensing element or a terminated transmission line sensing element and methods and system for using the same Download PDF

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Publication number
WO2005060653A3
WO2005060653A3 PCT/US2004/042161 US2004042161W WO2005060653A3 WO 2005060653 A3 WO2005060653 A3 WO 2005060653A3 US 2004042161 W US2004042161 W US 2004042161W WO 2005060653 A3 WO2005060653 A3 WO 2005060653A3
Authority
WO
WIPO (PCT)
Prior art keywords
sensing element
probe
signal
medium
looped
Prior art date
Application number
PCT/US2004/042161
Other languages
French (fr)
Other versions
WO2005060653A2 (en
Inventor
Mehrdad Mehdizadeh
Original Assignee
Du Pont
Mehrdad Mehdizadeh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Du Pont, Mehrdad Mehdizadeh filed Critical Du Pont
Publication of WO2005060653A2 publication Critical patent/WO2005060653A2/en
Publication of WO2005060653A3 publication Critical patent/WO2005060653A3/en

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/22—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
    • G01N27/221—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance by investigating the dielectric properties
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/24—Earth materials
    • G01N33/246—Earth materials for water content

Abstract

An apparatus (10, 10’) for detecting the presence of a material that causes a change in the dielectric characteristic of a medium (M). The sensing element of the probe may be a looped (20) or a monopole sensing element (220). With the probe contacting the medium (M) a property of a signal transmitted through the probe is changed in accordance with a change in dielectric characteristic of the medium (M) due to the quantity of the material present in the vicinity of the probe. The changed property of the signal may be either: the attenuation of the signal at a predetermined frequency; the attenuation of the signal amplitude at each of a plurality of predetermined frequencies; or the changes in the propagation velocity of the signal through the probe. The probe (20, 220) may be used to determine moisture in soil, for example, as part of an automated irrigation system and method for controlling the moisture content in a medium within a container (P). The probe (20, 200) may also be used to detect an interface between materials.
PCT/US2004/042161 2003-12-18 2004-12-16 Inductive probe having a looped sensing element or a terminated transmission line sensing element and methods and system for using the same WO2005060653A2 (en)

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
US53068403P 2003-12-18 2003-12-18
US53103103P 2003-12-18 2003-12-18
US53068303P 2003-12-18 2003-12-18
US53103403P 2003-12-18 2003-12-18
US60/530,684 2003-12-18
US60/531,031 2003-12-18
US60/530,683 2003-12-18
US60/531,034 2003-12-18
US60898404P 2004-09-10 2004-09-10
US60/608,984 2004-09-10

Publications (2)

Publication Number Publication Date
WO2005060653A2 WO2005060653A2 (en) 2005-07-07
WO2005060653A3 true WO2005060653A3 (en) 2005-12-01

Family

ID=34714661

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2004/042161 WO2005060653A2 (en) 2003-12-18 2004-12-16 Inductive probe having a looped sensing element or a terminated transmission line sensing element and methods and system for using the same

Country Status (1)

Country Link
WO (1) WO2005060653A2 (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7538561B2 (en) 2004-09-10 2009-05-26 E. I. Du Pont De Nemours And Company Method for detecting an interface between first and second strata of materials
EP2534941A3 (en) * 2007-12-07 2016-03-09 Esi Environmental Sensors Inc. Insertable rod probe for measuring moisture content in particular in soil using for example time domain transmissiometry (TDT)
DE102010001080A1 (en) * 2010-01-21 2011-07-28 Robert Bosch GmbH, 70469 Device for measuring the dielectric properties of liquid media
EP3152843A4 (en) 2014-06-06 2017-12-27 CTS Corporation Radio frequency process sensing, control, and diagnostics network
CN106415285B (en) 2014-06-06 2020-12-04 滤波器感知技术有限公司 Radio frequency state variable measurement system and method
DE112015004321T5 (en) 2014-10-20 2017-07-06 Filter Sensing Technologies, Inc. Filter retention analysis and diagnosis
US10799826B2 (en) 2015-06-08 2020-10-13 Cts Corporation Radio frequency process sensing, control, and diagnostics network and system
US10118119B2 (en) 2015-06-08 2018-11-06 Cts Corporation Radio frequency process sensing, control, and diagnostics network and system
WO2017180466A1 (en) 2016-04-11 2017-10-19 Cts Corporation Radio frequency system and method for monitoring engine-out exhaust constituents
CN111433595A (en) * 2017-10-26 2020-07-17 特瑞布斯有限公司 System and method for measuring soil conductivity
AU2018354443B2 (en) 2017-10-26 2022-03-10 Tribus, Llc System and method for measuring soil electrical conductivity
US11215102B2 (en) 2018-01-16 2022-01-04 Cts Corporation Radio frequency sensor system incorporating machine learning system and method
US10856056B2 (en) * 2018-09-07 2020-12-01 Colorado State University Research Foundation Sensor network for measuring soil moisture
US11300498B2 (en) * 2019-06-26 2022-04-12 Micross Advanced Interconnect Technology Llc Corrosion sensor and method and computerized system for using the same

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4926120A (en) * 1988-12-27 1990-05-15 United Technologies Corporation In-line metallic debris particle detection system
US5400651A (en) * 1992-05-28 1995-03-28 Shell Oil Company Apparatus for interface measurement in a storage tank
US5539323A (en) * 1993-05-07 1996-07-23 Brooks Automation, Inc. Sensor for articles such as wafers on end effector
US5550478A (en) * 1991-03-12 1996-08-27 Chrysler Corporation Housing for flexible fuel sensor
US5659251A (en) * 1994-06-30 1997-08-19 Hewlett-Packard Company Electromagnetic inductive probe
US6680617B2 (en) * 2000-09-20 2004-01-20 Neocera, Inc. Apertured probes for localized measurements of a material's complex permittivity and fabrication method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4926120A (en) * 1988-12-27 1990-05-15 United Technologies Corporation In-line metallic debris particle detection system
US5550478A (en) * 1991-03-12 1996-08-27 Chrysler Corporation Housing for flexible fuel sensor
US5400651A (en) * 1992-05-28 1995-03-28 Shell Oil Company Apparatus for interface measurement in a storage tank
US5539323A (en) * 1993-05-07 1996-07-23 Brooks Automation, Inc. Sensor for articles such as wafers on end effector
US5659251A (en) * 1994-06-30 1997-08-19 Hewlett-Packard Company Electromagnetic inductive probe
US6680617B2 (en) * 2000-09-20 2004-01-20 Neocera, Inc. Apertured probes for localized measurements of a material's complex permittivity and fabrication method

Also Published As

Publication number Publication date
WO2005060653A2 (en) 2005-07-07

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