ATE399992T1 - Matrixpotentialresponder - Google Patents

Matrixpotentialresponder

Info

Publication number
ATE399992T1
ATE399992T1 AT99966776T AT99966776T ATE399992T1 AT E399992 T1 ATE399992 T1 AT E399992T1 AT 99966776 T AT99966776 T AT 99966776T AT 99966776 T AT99966776 T AT 99966776T AT E399992 T1 ATE399992 T1 AT E399992T1
Authority
AT
Austria
Prior art keywords
soil
potential responders
compressive force
control
matrix potential
Prior art date
Application number
AT99966776T
Other languages
English (en)
Inventor
Clive Lindsay Ragless
Original Assignee
Clive Lindsay Ragless
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 Clive Lindsay Ragless filed Critical Clive Lindsay Ragless
Application granted granted Critical
Publication of ATE399992T1 publication Critical patent/ATE399992T1/de

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N13/00—Investigating surface or boundary effects, e.g. wetting power; Investigating diffusion effects; Analysing materials by determining surface, boundary, or diffusion effects
    • G01N13/04—Investigating osmotic effects
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G25/00—Watering gardens, fields, sports grounds or the like
    • A01G25/16—Control of watering
    • A01G25/167—Control by humidity of the soil itself or of devices simulating soil or of the atmosphere; Soil humidity sensors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/001—Actuating devices; Operating means; Releasing devices actuated by volume variations caused by an element soluble in a fluid or swelling in contact with a fluid
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N19/00—Investigating materials by mechanical methods
    • G01N19/10—Measuring moisture content, e.g. by measuring change in length of hygroscopic filament; Hygrometers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/1842—Ambient condition change responsive
    • Y10T137/1866—For controlling soil irrigation
    • Y10T137/189—Soil moisture sensing

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Pathology (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Geology (AREA)
  • Remote Sensing (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Environmental Sciences (AREA)
  • Water Supply & Treatment (AREA)
  • Soil Sciences (AREA)
  • Measuring Fluid Pressure (AREA)
  • Push-Button Switches (AREA)
  • Near-Field Transmission Systems (AREA)
  • Air Bags (AREA)
  • Hall/Mr Elements (AREA)
  • Optical Integrated Circuits (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
  • Cultivation Receptacles Or Flower-Pots, Or Pots For Seedlings (AREA)
  • Catching Or Destruction (AREA)
AT99966776T 1998-12-21 1999-12-21 Matrixpotentialresponder ATE399992T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AUPP7817A AUPP781798A0 (en) 1998-12-21 1998-12-21 Matric potential responder improvements

Publications (1)

Publication Number Publication Date
ATE399992T1 true ATE399992T1 (de) 2008-07-15

Family

ID=3812021

Family Applications (1)

Application Number Title Priority Date Filing Date
AT99966776T ATE399992T1 (de) 1998-12-21 1999-12-21 Matrixpotentialresponder

Country Status (6)

Country Link
US (1) US6782909B1 (de)
EP (1) EP1155319B1 (de)
AT (1) ATE399992T1 (de)
AU (1) AUPP781798A0 (de)
DE (1) DE69939030D1 (de)
WO (1) WO2000037935A1 (de)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AUPR808001A0 (en) * 2001-10-05 2001-10-25 Ragless, Clive Lindsay Method and apparatus for determining concentration of a chemical substance in a solution
DE10202198A1 (de) * 2002-01-22 2003-07-31 Jinchen Liu Vorrichtung zur Bestimmung des Matrixpotentials im Material
US20050087231A1 (en) * 2003-10-14 2005-04-28 Sanders Larry C. Non-electronic, automatically controlled valving system utilizing expanding/contracting material
CN100365328C (zh) * 2004-12-24 2008-01-30 北京林业大学 智能节水阀门
US8166906B2 (en) * 2005-04-29 2012-05-01 Ambrozy Rel S Stimulus indicating device employing polymer gels
US8077554B2 (en) 2005-04-29 2011-12-13 Ambrozy Rel S Stimulus indicating device employing polymer gels
US20120032117A1 (en) 2005-04-29 2012-02-09 Ambrozy Rel S Stimulus indicating device employing polymer gels
US7940605B2 (en) * 2005-04-29 2011-05-10 Prasidiux, Llc Stimulus indicating device employing polymer gels
US9182292B2 (en) 2005-04-29 2015-11-10 Prasidiux, Llc Stimulus indicating device employing polymer gels
US9063015B2 (en) * 2005-04-29 2015-06-23 Prasidiux Llp Stimulus indication employing polymer gels
US7631545B2 (en) * 2007-05-02 2009-12-15 Soilmoisture Equipment Corporation Jet-action plunger-based tensiometer apparatus
EP2180778B1 (de) 2007-08-20 2013-04-03 Netafim Ltd. Bewässerungsregelungssystem
JP5195451B2 (ja) * 2008-04-15 2013-05-08 株式会社デンソー 燃料噴射装置、それに用いられる蓄圧式燃料噴射装置システム
US20180328513A1 (en) * 2015-11-13 2018-11-15 Rain Bird Corporation Moisture sensing valves and devices
US10260652B2 (en) * 2016-02-03 2019-04-16 Apurk Ltd. Automatic water shut-off device
DE102016212672B3 (de) * 2016-07-12 2017-07-06 Olympus Winter & Ibe Gmbh Einrichtung zum Prüfen der Dichtigkeit eines chirurgischen Instruments, Aufbereitungseinrichtung zum Aufbereiten von chirurgischen Instrumenten und Verwendung eines quellbaren Materialkörpers
WO2018067625A1 (en) * 2016-10-04 2018-04-12 Lafian Jesse Tensiometer apparatus and method
EP3348138B1 (de) * 2017-01-11 2023-03-22 Technische Hochschule Mittelhessen Verfahren und vorrichtung zur bewässerung von pflanzen
IL253540A0 (en) * 2017-07-18 2017-09-28 I Dripper Ltd humidity sensor
CN107345592A (zh) * 2017-08-17 2017-11-14 中国农业科学院农田灌溉研究所 一种灌溉输水管流量感应调节阀
CN111278275B (zh) * 2017-09-06 2023-06-23 索里德李普公司 自主灌溉系统
US11703438B2 (en) 2018-10-19 2023-07-18 Hortau Inc. Porous medium parameter measurement device
CN109813866B (zh) * 2019-01-24 2021-08-17 中南大学 非饱和冻土基质势的测量方法
US11085893B2 (en) 2019-09-23 2021-08-10 Whitney Skaling Capacitive matrix suction sensor having a hydrophilic, non-conductive, porous jacket
US11353388B2 (en) 2020-01-29 2022-06-07 Whitney Skaling Time-domain reflectometry matrix suction sensor
CN111616009A (zh) * 2020-05-28 2020-09-04 衢州市恒辉农业科技有限公司 一种半夏提前出苗的种植方法
CN114688013B (zh) * 2022-06-05 2022-08-19 青州市春晖科技发展有限公司 提高泥浆泵运行部件监测装置及其检测方法

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3867837A (en) * 1970-03-06 1975-02-25 Eugene F Malin Moisture detection
US3874590A (en) * 1973-10-19 1975-04-01 William H Gibson Moisture responsive apparatus for controlling moisture content of soil
US4182357A (en) 1978-03-02 1980-01-08 Leonard Ornstein Method of controlling the relative humidity in a soil environment and apparatus for accomplishing same
SU966571A1 (ru) * 1981-02-02 1982-10-15 Ленинградский Филиал Государственного Проектно-Изыскательского И Научно-Исследовательского Института Гражданской Авиации "Аэропроект" Датчик влажности грунта
US4655076A (en) 1984-01-23 1987-04-07 Raychem Corporation Moisture measuring apparatus
US4696319A (en) 1984-02-10 1987-09-29 Martin Gant Moisture-actuated apparatus for controlling the flow of water
US4561294A (en) * 1984-09-14 1985-12-31 The United States Of America As Represented By The Secretary Of Agriculture Method and apparatus to control soil moisture matric potential
US4648555A (en) 1985-11-18 1987-03-10 Gumbmann Jr Joseph Irrigation device
US5273066A (en) * 1988-06-10 1993-12-28 Graham Neil B Control valves and method of plant growing using flow control
IL89317A (en) 1989-02-17 1992-02-16 Plastro Gvat Moisture-responsive valve
US5148825A (en) 1991-11-20 1992-09-22 Plastro-Gvat Moisture-responsive valve
US5329081A (en) 1992-01-17 1994-07-12 Morningside Holdings Pty. Ltd. Moisture sensor and switch
AU4163997A (en) 1996-07-26 1998-02-20 Soil Sensors, Inc. Soil moisture sensor
US6220268B1 (en) * 2000-04-24 2001-04-24 Ross Spencer Bolton Moisture controlled valve which does not permit partial fluid flow

Also Published As

Publication number Publication date
EP1155319A4 (de) 2003-03-12
WO2000037935A1 (en) 2000-06-29
AUPP781798A0 (en) 1999-01-21
DE69939030D1 (de) 2008-08-14
US6782909B1 (en) 2004-08-31
EP1155319A1 (de) 2001-11-21
EP1155319B1 (de) 2008-07-02

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Legal Events

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