WO2009094324A3 - Sensor for measuring moisture and salinity - Google Patents

Sensor for measuring moisture and salinity Download PDF

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Publication number
WO2009094324A3
WO2009094324A3 PCT/US2009/031412 US2009031412W WO2009094324A3 WO 2009094324 A3 WO2009094324 A3 WO 2009094324A3 US 2009031412 W US2009031412 W US 2009031412W WO 2009094324 A3 WO2009094324 A3 WO 2009094324A3
Authority
WO
WIPO (PCT)
Prior art keywords
salinity
sensor
soil
circuit
moisture
Prior art date
Application number
PCT/US2009/031412
Other languages
French (fr)
Other versions
WO2009094324A2 (en
Inventor
Jeffrey Campbell
Original Assignee
Advanced Sensor Technology, Inc.
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
Priority claimed from US12/124,977 external-priority patent/US7408364B1/en
Application filed by Advanced Sensor Technology, Inc. filed Critical Advanced Sensor Technology, Inc.
Publication of WO2009094324A2 publication Critical patent/WO2009094324A2/en
Publication of WO2009094324A3 publication Critical patent/WO2009094324A3/en

Links

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
    • G01N27/223—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance for determining moisture content, e.g. humidity
    • 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

A sensor (20) for measuring the moisture and salinity of a material is disclosed herein. The sensor (20) preferably includes a soil moisture circuit (22), a soil salinity circuit (23) and a probe structure (21). The soil moisture circuit (22) includes a high frequency oscillator (24), a voltage meter (26) and a reference capacitor (29). The soil salinity circuit (23) includes a low frequency oscillator (25), a voltage meter (27) and a reference resistor (30). A third voltage meter (28) allows for voltage outputs to be measured to calculate soil moisture and soil salinity values.
PCT/US2009/031412 2008-01-21 2009-01-19 Sensor for measuring moisture and salinity WO2009094324A2 (en)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
US2236208P 2008-01-21 2008-01-21
US61/022,362 2008-01-21
US12/124,977 2008-05-21
US12/124,977 US7408364B1 (en) 2008-05-21 2008-05-21 Sensor for measuring moisture and salinity
US12/185,083 2008-08-02
US12/185,083 US7535237B1 (en) 2008-01-21 2008-08-02 Sensor for measuring moisture and salinity
US12/185,099 US7482820B1 (en) 2008-05-21 2008-08-03 Sensor for measuring moisture and salinity
US12/185,099 2008-08-03

Publications (2)

Publication Number Publication Date
WO2009094324A2 WO2009094324A2 (en) 2009-07-30
WO2009094324A3 true WO2009094324A3 (en) 2009-10-08

Family

ID=40635973

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2009/031412 WO2009094324A2 (en) 2008-01-21 2009-01-19 Sensor for measuring moisture and salinity

Country Status (2)

Country Link
US (2) US7535237B1 (en)
WO (1) WO2009094324A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108914908A (en) * 2018-09-17 2018-11-30 甘肃恒通路桥工程有限公司 A kind of Salty Soil Subgrade deterioration monitoring method

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CN101694475B (en) * 2009-10-14 2011-08-10 北京市农林科学院 Multipoint soil moisture sensor and method utilizing same to measure soil moisture
DE102010030131B4 (en) * 2010-06-15 2011-12-29 Dow Deutschland Anlagengesellschaft Mbh Hand-held device and method for testing a corrosion-prone metallic article for corrosion
KR101741083B1 (en) * 2010-06-24 2017-05-29 삼성전자주식회사 Apparatus for detecting salinity
CN101936938B (en) * 2010-07-05 2013-01-02 河海大学 High-frequency soil moisture measuring instrument
US8885558B2 (en) 2011-09-28 2014-11-11 Robert Bosch Gmbh System and method for multiple access sensor networks
US9146206B2 (en) 2012-02-03 2015-09-29 Deere & Company Capacitance-based moisture sensor
US10299448B2 (en) * 2013-07-10 2019-05-28 James Canyon Method and apparatus to improve crop yields and increase irrigation efficiency in agriculture
US20150338363A1 (en) * 2014-05-13 2015-11-26 Auburn University Capacitive fringing field sensors and electrical conductivity sensors integrated into printed circuit boards
KR101664552B1 (en) * 2014-08-11 2016-10-10 엘지전자 주식회사 Apparatus for detecting particles
CN104198537B (en) * 2014-09-03 2016-10-05 中国科学院合肥物质科学研究院 A kind of soil moisture content and conductivity detection method and detection device
US9949450B2 (en) 2014-11-03 2018-04-24 MorpH2O Water Management, LLC Soil moisture probe and system with temperature adjustment
US10028425B2 (en) 2015-03-02 2018-07-24 James Canyon System, apparatus, and method for remote soil moisture measurement and control
US9823286B2 (en) * 2015-04-27 2017-11-21 Motorola Mobility Llc Moisture detection system for external electrical connector and methods therefor
RU2655944C1 (en) * 2017-05-23 2018-05-30 Елизавета Ростиславовна Гулина Device for remote control of soil moisture and temperature
WO2019082763A1 (en) * 2017-10-23 2019-05-02 国立大学法人静岡大学 Soil sensor and soil measurement method
JP7020094B2 (en) * 2017-12-12 2022-02-16 株式会社Ihi Electrical conductivity estimation device
US20190331622A1 (en) * 2018-04-28 2019-10-31 China Agricultural University Soil Moisture Monitoring System
KR102631533B1 (en) * 2018-10-22 2024-01-31 삼성전자주식회사 Method for detecting water in conncting terminal of electronic device and electronic device for supporting the same
WO2020085837A1 (en) * 2018-10-25 2020-04-30 주식회사 다모아텍 Soil moisture sensor and operating method thereof
US11243182B2 (en) * 2019-02-05 2022-02-08 AGI Suretrack LLC Moisture soil probe system
WO2020198727A1 (en) * 2019-03-28 2020-10-01 GroGuru, Inc. Location determination for subsurface communication device
US11415612B2 (en) * 2019-10-08 2022-08-16 METER Group, Inc. USA Complex dielectric sensor
WO2021119299A1 (en) * 2019-12-12 2021-06-17 GroGuru, Inc. Wireless two-way communication in complex media
CN110849915B (en) * 2019-12-18 2023-10-10 上海硕物天成信息科技有限公司 Soil moisture sensing device
US20230059998A1 (en) * 2020-02-15 2023-02-23 Michael Murray Soil and environment sensor and method of use
US11445275B2 (en) * 2020-02-15 2022-09-13 Michael Murray Soil and environment sensor and method of use
CN111537567B (en) * 2020-04-30 2023-09-08 中国农业科学院草原研究所 Tubular needle type soil moisture content detection method

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US4646000A (en) * 1984-11-08 1987-02-24 The Yellow Springs Instrument Company Method and apparatus for measuring soil salinity
US5418466A (en) * 1990-10-12 1995-05-23 Watson; Keith Moisture and salinity sensor and method of use
US5479104A (en) * 1993-09-14 1995-12-26 Vitel, Inc. Electrical sensor for determining the moisture content of soil
KR200340338Y1 (en) * 2003-10-14 2004-02-11 주식회사 미래센서 Device to measure humidity and salinity of soil
US7129713B2 (en) * 2004-01-21 2006-10-31 Delmhorst Instrument Co. Capacitive moisture sensor
US20070082600A1 (en) * 2005-10-07 2007-04-12 Bryan Asvestas Apparatus and method for selecting and growing living plants

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US5179347A (en) * 1992-04-10 1993-01-12 Irrometer Company, Inc. Electrical sensor for sensing moisture in soils
IL106829A (en) * 1993-08-29 1996-01-19 Silora Television & Electronic Soil moisture sensor
US5445178A (en) 1994-02-18 1995-08-29 Feuer; Lenny Soil moisture sensor
US5859536A (en) * 1997-01-08 1999-01-12 Oliver Haugen Moisture sensor having low sensitivity to conductance changes
US6014029A (en) * 1997-11-12 2000-01-11 Climonics Ltda Sensor for sensing changes in the permittivity of a medium in which it is disposed
AU2002953346A0 (en) 2002-12-16 2003-01-09 Sentek Pty Ltd Soil matric potential and salinity measurement apparatus and method of use
US20060178847A1 (en) * 2005-02-09 2006-08-10 Glancy John E Apparatus and method for wireless real time measurement and control of soil and turf conditions

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4646000A (en) * 1984-11-08 1987-02-24 The Yellow Springs Instrument Company Method and apparatus for measuring soil salinity
US5418466A (en) * 1990-10-12 1995-05-23 Watson; Keith Moisture and salinity sensor and method of use
US5479104A (en) * 1993-09-14 1995-12-26 Vitel, Inc. Electrical sensor for determining the moisture content of soil
KR200340338Y1 (en) * 2003-10-14 2004-02-11 주식회사 미래센서 Device to measure humidity and salinity of soil
US7129713B2 (en) * 2004-01-21 2006-10-31 Delmhorst Instrument Co. Capacitive moisture sensor
US20070082600A1 (en) * 2005-10-07 2007-04-12 Bryan Asvestas Apparatus and method for selecting and growing living plants

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108914908A (en) * 2018-09-17 2018-11-30 甘肃恒通路桥工程有限公司 A kind of Salty Soil Subgrade deterioration monitoring method

Also Published As

Publication number Publication date
US7535237B1 (en) 2009-05-19
US20090219037A1 (en) 2009-09-03
US7884620B2 (en) 2011-02-08
WO2009094324A2 (en) 2009-07-30

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